diff options
Diffstat (limited to 'target/cris')
| -rw-r--r-- | target/cris/Makefile.objs | 3 | ||||
| -rw-r--r-- | target/cris/cpu-qom.h | 55 | ||||
| -rw-r--r-- | target/cris/cpu.c | 357 | ||||
| -rw-r--r-- | target/cris/cpu.h | 309 | ||||
| -rw-r--r-- | target/cris/crisv10-decode.h | 108 | ||||
| -rw-r--r-- | target/cris/crisv32-decode.h | 133 | ||||
| -rw-r--r-- | target/cris/gdbstub.c | 131 | ||||
| -rw-r--r-- | target/cris/helper.c | 319 | ||||
| -rw-r--r-- | target/cris/helper.h | 24 | ||||
| -rw-r--r-- | target/cris/machine.c | 95 | ||||
| -rw-r--r-- | target/cris/mmu.c | 362 | ||||
| -rw-r--r-- | target/cris/mmu.h | 17 | ||||
| -rw-r--r-- | target/cris/op_helper.c | 639 | ||||
| -rw-r--r-- | target/cris/opcode-cris.h | 355 | ||||
| -rw-r--r-- | target/cris/translate.c | 3413 | ||||
| -rw-r--r-- | target/cris/translate_v10.c | 1315 |
16 files changed, 7635 insertions, 0 deletions
diff --git a/target/cris/Makefile.objs b/target/cris/Makefile.objs new file mode 100644 index 0000000000..7779227fc4 --- /dev/null +++ b/target/cris/Makefile.objs @@ -0,0 +1,3 @@ +obj-y += translate.o op_helper.o helper.o cpu.o +obj-y += gdbstub.o +obj-$(CONFIG_SOFTMMU) += mmu.o machine.o diff --git a/target/cris/cpu-qom.h b/target/cris/cpu-qom.h new file mode 100644 index 0000000000..7556e9f97e --- /dev/null +++ b/target/cris/cpu-qom.h @@ -0,0 +1,55 @@ +/* + * QEMU CRIS CPU + * + * Copyright (c) 2012 SUSE LINUX Products GmbH + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see + * <http://www.gnu.org/licenses/lgpl-2.1.html> + */ +#ifndef QEMU_CRIS_CPU_QOM_H +#define QEMU_CRIS_CPU_QOM_H + +#include "qom/cpu.h" + +#define TYPE_CRIS_CPU "cris-cpu" + +#define CRIS_CPU_CLASS(klass) \ + OBJECT_CLASS_CHECK(CRISCPUClass, (klass), TYPE_CRIS_CPU) +#define CRIS_CPU(obj) \ + OBJECT_CHECK(CRISCPU, (obj), TYPE_CRIS_CPU) +#define CRIS_CPU_GET_CLASS(obj) \ + OBJECT_GET_CLASS(CRISCPUClass, (obj), TYPE_CRIS_CPU) + +/** + * CRISCPUClass: + * @parent_realize: The parent class' realize handler. + * @parent_reset: The parent class' reset handler. + * @vr: Version Register value. + * + * A CRIS CPU model. + */ +typedef struct CRISCPUClass { + /*< private >*/ + CPUClass parent_class; + /*< public >*/ + + DeviceRealize parent_realize; + void (*parent_reset)(CPUState *cpu); + + uint32_t vr; +} CRISCPUClass; + +typedef struct CRISCPU CRISCPU; + +#endif diff --git a/target/cris/cpu.c b/target/cris/cpu.c new file mode 100644 index 0000000000..2e9ab9700e --- /dev/null +++ b/target/cris/cpu.c @@ -0,0 +1,357 @@ +/* + * QEMU CRIS CPU + * + * Copyright (c) 2008 AXIS Communications AB + * Written by Edgar E. Iglesias. + * + * Copyright (c) 2012 SUSE LINUX Products GmbH + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see + * <http://www.gnu.org/licenses/lgpl-2.1.html> + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "cpu.h" +#include "qemu-common.h" +#include "mmu.h" +#include "exec/exec-all.h" + + +static void cris_cpu_set_pc(CPUState *cs, vaddr value) +{ + CRISCPU *cpu = CRIS_CPU(cs); + + cpu->env.pc = value; +} + +static bool cris_cpu_has_work(CPUState *cs) +{ + return cs->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI); +} + +/* CPUClass::reset() */ +static void cris_cpu_reset(CPUState *s) +{ + CRISCPU *cpu = CRIS_CPU(s); + CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(cpu); + CPUCRISState *env = &cpu->env; + uint32_t vr; + + ccc->parent_reset(s); + + vr = env->pregs[PR_VR]; + memset(env, 0, offsetof(CPUCRISState, load_info)); + env->pregs[PR_VR] = vr; + tlb_flush(s, 1); + +#if defined(CONFIG_USER_ONLY) + /* start in user mode with interrupts enabled. */ + env->pregs[PR_CCS] |= U_FLAG | I_FLAG | P_FLAG; +#else + cris_mmu_init(env); + env->pregs[PR_CCS] = 0; +#endif +} + +static ObjectClass *cris_cpu_class_by_name(const char *cpu_model) +{ + ObjectClass *oc; + char *typename; + + if (cpu_model == NULL) { + return NULL; + } + +#if defined(CONFIG_USER_ONLY) + if (strcasecmp(cpu_model, "any") == 0) { + return object_class_by_name("crisv32-" TYPE_CRIS_CPU); + } +#endif + + typename = g_strdup_printf("%s-" TYPE_CRIS_CPU, cpu_model); + oc = object_class_by_name(typename); + g_free(typename); + if (oc != NULL && (!object_class_dynamic_cast(oc, TYPE_CRIS_CPU) || + object_class_is_abstract(oc))) { + oc = NULL; + } + return oc; +} + +CRISCPU *cpu_cris_init(const char *cpu_model) +{ + return CRIS_CPU(cpu_generic_init(TYPE_CRIS_CPU, cpu_model)); +} + +/* Sort alphabetically by VR. */ +static gint cris_cpu_list_compare(gconstpointer a, gconstpointer b) +{ + CRISCPUClass *ccc_a = CRIS_CPU_CLASS(a); + CRISCPUClass *ccc_b = CRIS_CPU_CLASS(b); + + /* */ + if (ccc_a->vr > ccc_b->vr) { + return 1; + } else if (ccc_a->vr < ccc_b->vr) { + return -1; + } else { + return 0; + } +} + +static void cris_cpu_list_entry(gpointer data, gpointer user_data) +{ + ObjectClass *oc = data; + CPUListState *s = user_data; + const char *typename = object_class_get_name(oc); + char *name; + + name = g_strndup(typename, strlen(typename) - strlen("-" TYPE_CRIS_CPU)); + (*s->cpu_fprintf)(s->file, " %s\n", name); + g_free(name); +} + +void cris_cpu_list(FILE *f, fprintf_function cpu_fprintf) +{ + CPUListState s = { + .file = f, + .cpu_fprintf = cpu_fprintf, + }; + GSList *list; + + list = object_class_get_list(TYPE_CRIS_CPU, false); + list = g_slist_sort(list, cris_cpu_list_compare); + (*cpu_fprintf)(f, "Available CPUs:\n"); + g_slist_foreach(list, cris_cpu_list_entry, &s); + g_slist_free(list); +} + +static void cris_cpu_realizefn(DeviceState *dev, Error **errp) +{ + CPUState *cs = CPU(dev); + CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(dev); + Error *local_err = NULL; + + cpu_exec_realizefn(cs, &local_err); + if (local_err != NULL) { + error_propagate(errp, local_err); + return; + } + + cpu_reset(cs); + qemu_init_vcpu(cs); + + ccc->parent_realize(dev, errp); +} + +#ifndef CONFIG_USER_ONLY +static void cris_cpu_set_irq(void *opaque, int irq, int level) +{ + CRISCPU *cpu = opaque; + CPUState *cs = CPU(cpu); + int type = irq == CRIS_CPU_IRQ ? CPU_INTERRUPT_HARD : CPU_INTERRUPT_NMI; + + if (level) { + cpu_interrupt(cs, type); + } else { + cpu_reset_interrupt(cs, type); + } +} +#endif + +static void cris_disas_set_info(CPUState *cpu, disassemble_info *info) +{ + CRISCPU *cc = CRIS_CPU(cpu); + CPUCRISState *env = &cc->env; + + if (env->pregs[PR_VR] != 32) { + info->mach = bfd_mach_cris_v0_v10; + info->print_insn = print_insn_crisv10; + } else { + info->mach = bfd_mach_cris_v32; + info->print_insn = print_insn_crisv32; + } +} + +static void cris_cpu_initfn(Object *obj) +{ + CPUState *cs = CPU(obj); + CRISCPU *cpu = CRIS_CPU(obj); + CRISCPUClass *ccc = CRIS_CPU_GET_CLASS(obj); + CPUCRISState *env = &cpu->env; + static bool tcg_initialized; + + cs->env_ptr = env; + + env->pregs[PR_VR] = ccc->vr; + +#ifndef CONFIG_USER_ONLY + /* IRQ and NMI lines. */ + qdev_init_gpio_in(DEVICE(cpu), cris_cpu_set_irq, 2); +#endif + + if (tcg_enabled() && !tcg_initialized) { + tcg_initialized = true; + if (env->pregs[PR_VR] < 32) { + cris_initialize_crisv10_tcg(); + } else { + cris_initialize_tcg(); + } + } +} + +static void crisv8_cpu_class_init(ObjectClass *oc, void *data) +{ + CPUClass *cc = CPU_CLASS(oc); + CRISCPUClass *ccc = CRIS_CPU_CLASS(oc); + + ccc->vr = 8; + cc->do_interrupt = crisv10_cpu_do_interrupt; + cc->gdb_read_register = crisv10_cpu_gdb_read_register; +} + +static void crisv9_cpu_class_init(ObjectClass *oc, void *data) +{ + CPUClass *cc = CPU_CLASS(oc); + CRISCPUClass *ccc = CRIS_CPU_CLASS(oc); + + ccc->vr = 9; + cc->do_interrupt = crisv10_cpu_do_interrupt; + cc->gdb_read_register = crisv10_cpu_gdb_read_register; +} + +static void crisv10_cpu_class_init(ObjectClass *oc, void *data) +{ + CPUClass *cc = CPU_CLASS(oc); + CRISCPUClass *ccc = CRIS_CPU_CLASS(oc); + + ccc->vr = 10; + cc->do_interrupt = crisv10_cpu_do_interrupt; + cc->gdb_read_register = crisv10_cpu_gdb_read_register; +} + +static void crisv11_cpu_class_init(ObjectClass *oc, void *data) +{ + CPUClass *cc = CPU_CLASS(oc); + CRISCPUClass *ccc = CRIS_CPU_CLASS(oc); + + ccc->vr = 11; + cc->do_interrupt = crisv10_cpu_do_interrupt; + cc->gdb_read_register = crisv10_cpu_gdb_read_register; +} + +static void crisv17_cpu_class_init(ObjectClass *oc, void *data) +{ + CPUClass *cc = CPU_CLASS(oc); + CRISCPUClass *ccc = CRIS_CPU_CLASS(oc); + + ccc->vr = 17; + cc->do_interrupt = crisv10_cpu_do_interrupt; + cc->gdb_read_register = crisv10_cpu_gdb_read_register; +} + +static void crisv32_cpu_class_init(ObjectClass *oc, void *data) +{ + CRISCPUClass *ccc = CRIS_CPU_CLASS(oc); + + ccc->vr = 32; +} + +#define TYPE(model) model "-" TYPE_CRIS_CPU + +static const TypeInfo cris_cpu_model_type_infos[] = { + { + .name = TYPE("crisv8"), + .parent = TYPE_CRIS_CPU, + .class_init = crisv8_cpu_class_init, + }, { + .name = TYPE("crisv9"), + .parent = TYPE_CRIS_CPU, + .class_init = crisv9_cpu_class_init, + }, { + .name = TYPE("crisv10"), + .parent = TYPE_CRIS_CPU, + .class_init = crisv10_cpu_class_init, + }, { + .name = TYPE("crisv11"), + .parent = TYPE_CRIS_CPU, + .class_init = crisv11_cpu_class_init, + }, { + .name = TYPE("crisv17"), + .parent = TYPE_CRIS_CPU, + .class_init = crisv17_cpu_class_init, + }, { + .name = TYPE("crisv32"), + .parent = TYPE_CRIS_CPU, + .class_init = crisv32_cpu_class_init, + } +}; + +#undef TYPE + +static void cris_cpu_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + CPUClass *cc = CPU_CLASS(oc); + CRISCPUClass *ccc = CRIS_CPU_CLASS(oc); + + ccc->parent_realize = dc->realize; + dc->realize = cris_cpu_realizefn; + + ccc->parent_reset = cc->reset; + cc->reset = cris_cpu_reset; + + cc->class_by_name = cris_cpu_class_by_name; + cc->has_work = cris_cpu_has_work; + cc->do_interrupt = cris_cpu_do_interrupt; + cc->cpu_exec_interrupt = cris_cpu_exec_interrupt; + cc->dump_state = cris_cpu_dump_state; + cc->set_pc = cris_cpu_set_pc; + cc->gdb_read_register = cris_cpu_gdb_read_register; + cc->gdb_write_register = cris_cpu_gdb_write_register; +#ifdef CONFIG_USER_ONLY + cc->handle_mmu_fault = cris_cpu_handle_mmu_fault; +#else + cc->get_phys_page_debug = cris_cpu_get_phys_page_debug; + dc->vmsd = &vmstate_cris_cpu; +#endif + + cc->gdb_num_core_regs = 49; + cc->gdb_stop_before_watchpoint = true; + + cc->disas_set_info = cris_disas_set_info; +} + +static const TypeInfo cris_cpu_type_info = { + .name = TYPE_CRIS_CPU, + .parent = TYPE_CPU, + .instance_size = sizeof(CRISCPU), + .instance_init = cris_cpu_initfn, + .abstract = true, + .class_size = sizeof(CRISCPUClass), + .class_init = cris_cpu_class_init, +}; + +static void cris_cpu_register_types(void) +{ + int i; + + type_register_static(&cris_cpu_type_info); + for (i = 0; i < ARRAY_SIZE(cris_cpu_model_type_infos); i++) { + type_register_static(&cris_cpu_model_type_infos[i]); + } +} + +type_init(cris_cpu_register_types) diff --git a/target/cris/cpu.h b/target/cris/cpu.h new file mode 100644 index 0000000000..43d5f9d1da --- /dev/null +++ b/target/cris/cpu.h @@ -0,0 +1,309 @@ +/* + * CRIS virtual CPU header + * + * Copyright (c) 2007 AXIS Communications AB + * Written by Edgar E. Iglesias + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef CRIS_CPU_H +#define CRIS_CPU_H + +#include "qemu-common.h" +#include "cpu-qom.h" + +#define TARGET_LONG_BITS 32 + +#define CPUArchState struct CPUCRISState + +#include "exec/cpu-defs.h" + +#define EXCP_NMI 1 +#define EXCP_GURU 2 +#define EXCP_BUSFAULT 3 +#define EXCP_IRQ 4 +#define EXCP_BREAK 5 + +/* CRIS-specific interrupt pending bits. */ +#define CPU_INTERRUPT_NMI CPU_INTERRUPT_TGT_EXT_3 + +/* CRUS CPU device objects interrupt lines. */ +#define CRIS_CPU_IRQ 0 +#define CRIS_CPU_NMI 1 + +/* Register aliases. R0 - R15 */ +#define R_FP 8 +#define R_SP 14 +#define R_ACR 15 + +/* Support regs, P0 - P15 */ +#define PR_BZ 0 +#define PR_VR 1 +#define PR_PID 2 +#define PR_SRS 3 +#define PR_WZ 4 +#define PR_EXS 5 +#define PR_EDA 6 +#define PR_PREFIX 6 /* On CRISv10 P6 is reserved, we use it as prefix. */ +#define PR_MOF 7 +#define PR_DZ 8 +#define PR_EBP 9 +#define PR_ERP 10 +#define PR_SRP 11 +#define PR_NRP 12 +#define PR_CCS 13 +#define PR_USP 14 +#define PRV10_BRP 14 +#define PR_SPC 15 + +/* CPU flags. */ +#define Q_FLAG 0x80000000 +#define M_FLAG_V32 0x40000000 +#define PFIX_FLAG 0x800 /* CRISv10 Only. */ +#define F_FLAG_V10 0x400 +#define P_FLAG_V10 0x200 +#define S_FLAG 0x200 +#define R_FLAG 0x100 +#define P_FLAG 0x80 +#define M_FLAG_V10 0x80 +#define U_FLAG 0x40 +#define I_FLAG 0x20 +#define X_FLAG 0x10 +#define N_FLAG 0x08 +#define Z_FLAG 0x04 +#define V_FLAG 0x02 +#define C_FLAG 0x01 +#define ALU_FLAGS 0x1F + +/* Condition codes. */ +#define CC_CC 0 +#define CC_CS 1 +#define CC_NE 2 +#define CC_EQ 3 +#define CC_VC 4 +#define CC_VS 5 +#define CC_PL 6 +#define CC_MI 7 +#define CC_LS 8 +#define CC_HI 9 +#define CC_GE 10 +#define CC_LT 11 +#define CC_GT 12 +#define CC_LE 13 +#define CC_A 14 +#define CC_P 15 + +#define NB_MMU_MODES 2 + +typedef struct { + uint32_t hi; + uint32_t lo; +} TLBSet; + +typedef struct CPUCRISState { + uint32_t regs[16]; + /* P0 - P15 are referred to as special registers in the docs. */ + uint32_t pregs[16]; + + /* Pseudo register for the PC. Not directly accessible on CRIS. */ + uint32_t pc; + + /* Pseudo register for the kernel stack. */ + uint32_t ksp; + + /* Branch. */ + int dslot; + int btaken; + uint32_t btarget; + + /* Condition flag tracking. */ + uint32_t cc_op; + uint32_t cc_mask; + uint32_t cc_dest; + uint32_t cc_src; + uint32_t cc_result; + /* size of the operation, 1 = byte, 2 = word, 4 = dword. */ + int cc_size; + /* X flag at the time of cc snapshot. */ + int cc_x; + + /* CRIS has certain insns that lockout interrupts. */ + int locked_irq; + int interrupt_vector; + int fault_vector; + int trap_vector; + + /* FIXME: add a check in the translator to avoid writing to support + register sets beyond the 4th. The ISA allows up to 256! but in + practice there is no core that implements more than 4. + + Support function registers are used to control units close to the + core. Accesses do not pass down the normal hierarchy. + */ + uint32_t sregs[4][16]; + + /* Linear feedback shift reg in the mmu. Used to provide pseudo + randomness for the 'hint' the mmu gives to sw for choosing valid + sets on TLB refills. */ + uint32_t mmu_rand_lfsr; + + /* + * We just store the stores to the tlbset here for later evaluation + * when the hw needs access to them. + * + * One for I and another for D. + */ + TLBSet tlbsets[2][4][16]; + + CPU_COMMON + + /* Members from load_info on are preserved across resets. */ + void *load_info; +} CPUCRISState; + +/** + * CRISCPU: + * @env: #CPUCRISState + * + * A CRIS CPU. + */ +struct CRISCPU { + /*< private >*/ + CPUState parent_obj; + /*< public >*/ + + CPUCRISState env; +}; + +static inline CRISCPU *cris_env_get_cpu(CPUCRISState *env) +{ + return container_of(env, CRISCPU, env); +} + +#define ENV_GET_CPU(e) CPU(cris_env_get_cpu(e)) + +#define ENV_OFFSET offsetof(CRISCPU, env) + +#ifndef CONFIG_USER_ONLY +extern const struct VMStateDescription vmstate_cris_cpu; +#endif + +void cris_cpu_do_interrupt(CPUState *cpu); +void crisv10_cpu_do_interrupt(CPUState *cpu); +bool cris_cpu_exec_interrupt(CPUState *cpu, int int_req); + +void cris_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf, + int flags); + +hwaddr cris_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr); + +int crisv10_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg); +int cris_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg); +int cris_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); + +CRISCPU *cpu_cris_init(const char *cpu_model); +/* you can call this signal handler from your SIGBUS and SIGSEGV + signal handlers to inform the virtual CPU of exceptions. non zero + is returned if the signal was handled by the virtual CPU. */ +int cpu_cris_signal_handler(int host_signum, void *pinfo, + void *puc); + +void cris_initialize_tcg(void); +void cris_initialize_crisv10_tcg(void); + +/* Instead of computing the condition codes after each CRIS instruction, + * QEMU just stores one operand (called CC_SRC), the result + * (called CC_DEST) and the type of operation (called CC_OP). When the + * condition codes are needed, the condition codes can be calculated + * using this information. Condition codes are not generated if they + * are only needed for conditional branches. + */ +enum { + CC_OP_DYNAMIC, /* Use env->cc_op */ + CC_OP_FLAGS, + CC_OP_CMP, + CC_OP_MOVE, + CC_OP_ADD, + CC_OP_ADDC, + CC_OP_MCP, + CC_OP_ADDU, + CC_OP_SUB, + CC_OP_SUBU, + CC_OP_NEG, + CC_OP_BTST, + CC_OP_MULS, + CC_OP_MULU, + CC_OP_DSTEP, + CC_OP_MSTEP, + CC_OP_BOUND, + + CC_OP_OR, + CC_OP_AND, + CC_OP_XOR, + CC_OP_LSL, + CC_OP_LSR, + CC_OP_ASR, + CC_OP_LZ +}; + +/* CRIS uses 8k pages. */ +#define TARGET_PAGE_BITS 13 +#define MMAP_SHIFT TARGET_PAGE_BITS + +#define TARGET_PHYS_ADDR_SPACE_BITS 32 +#define TARGET_VIRT_ADDR_SPACE_BITS 32 + +#define cpu_init(cpu_model) CPU(cpu_cris_init(cpu_model)) + +#define cpu_signal_handler cpu_cris_signal_handler + +/* MMU modes definitions */ +#define MMU_MODE0_SUFFIX _kernel +#define MMU_MODE1_SUFFIX _user +#define MMU_USER_IDX 1 +static inline int cpu_mmu_index (CPUCRISState *env, bool ifetch) +{ + return !!(env->pregs[PR_CCS] & U_FLAG); +} + +int cris_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw, + int mmu_idx); + +/* Support function regs. */ +#define SFR_RW_GC_CFG 0][0 +#define SFR_RW_MM_CFG env->pregs[PR_SRS]][0 +#define SFR_RW_MM_KBASE_LO env->pregs[PR_SRS]][1 +#define SFR_RW_MM_KBASE_HI env->pregs[PR_SRS]][2 +#define SFR_R_MM_CAUSE env->pregs[PR_SRS]][3 +#define SFR_RW_MM_TLB_SEL env->pregs[PR_SRS]][4 +#define SFR_RW_MM_TLB_LO env->pregs[PR_SRS]][5 +#define SFR_RW_MM_TLB_HI env->pregs[PR_SRS]][6 + +#include "exec/cpu-all.h" + +static inline void cpu_get_tb_cpu_state(CPUCRISState *env, target_ulong *pc, + target_ulong *cs_base, uint32_t *flags) +{ + *pc = env->pc; + *cs_base = 0; + *flags = env->dslot | + (env->pregs[PR_CCS] & (S_FLAG | P_FLAG | U_FLAG + | X_FLAG | PFIX_FLAG)); +} + +#define cpu_list cris_cpu_list +void cris_cpu_list(FILE *f, fprintf_function cpu_fprintf); + +#endif diff --git a/target/cris/crisv10-decode.h b/target/cris/crisv10-decode.h new file mode 100644 index 0000000000..bdb4b6d318 --- /dev/null +++ b/target/cris/crisv10-decode.h @@ -0,0 +1,108 @@ +/* + * CRISv10 insn decoding macros. + * + * Copyright (c) 2010 AXIS Communications AB + * Written by Edgar E. Iglesias. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ + +#define CRISV10_MODE_QIMMEDIATE 0 +#define CRISV10_MODE_REG 1 +#define CRISV10_MODE_INDIRECT 2 +#define CRISV10_MODE_AUTOINC 3 + +/* Quick Immediate. */ +#define CRISV10_QIMM_BCC_R0 0 +#define CRISV10_QIMM_BCC_R1 1 +#define CRISV10_QIMM_BCC_R2 2 +#define CRISV10_QIMM_BCC_R3 3 + +#define CRISV10_QIMM_BDAP_R0 4 +#define CRISV10_QIMM_BDAP_R1 5 +#define CRISV10_QIMM_BDAP_R2 6 +#define CRISV10_QIMM_BDAP_R3 7 + +#define CRISV10_QIMM_ADDQ 8 +#define CRISV10_QIMM_MOVEQ 9 +#define CRISV10_QIMM_SUBQ 10 +#define CRISV10_QIMM_CMPQ 11 +#define CRISV10_QIMM_ANDQ 12 +#define CRISV10_QIMM_ORQ 13 +#define CRISV10_QIMM_ASHQ 14 +#define CRISV10_QIMM_LSHQ 15 + + +#define CRISV10_REG_ADDX 0 +#define CRISV10_REG_MOVX 1 +#define CRISV10_REG_SUBX 2 +#define CRISV10_REG_LSL 3 +#define CRISV10_REG_ADDI 4 +#define CRISV10_REG_BIAP 5 +#define CRISV10_REG_NEG 6 +#define CRISV10_REG_BOUND 7 +#define CRISV10_REG_ADD 8 +#define CRISV10_REG_MOVE_R 9 +#define CRISV10_REG_MOVE_SPR_R 9 +#define CRISV10_REG_MOVE_R_SPR 8 +#define CRISV10_REG_SUB 10 +#define CRISV10_REG_CMP 11 +#define CRISV10_REG_AND 12 +#define CRISV10_REG_OR 13 +#define CRISV10_REG_ASR 14 +#define CRISV10_REG_LSR 15 + +#define CRISV10_REG_BTST 3 +#define CRISV10_REG_SCC 4 +#define CRISV10_REG_SETF 6 +#define CRISV10_REG_CLEARF 7 +#define CRISV10_REG_BIAP 5 +#define CRISV10_REG_ABS 10 +#define CRISV10_REG_DSTEP 11 +#define CRISV10_REG_LZ 12 +#define CRISV10_REG_NOT 13 +#define CRISV10_REG_SWAP 13 +#define CRISV10_REG_XOR 14 +#define CRISV10_REG_MSTEP 15 + +/* Indirect, var size. */ +#define CRISV10_IND_TEST 14 +#define CRISV10_IND_MUL 4 +#define CRISV10_IND_BDAP_M 5 +#define CRISV10_IND_ADD 8 +#define CRISV10_IND_MOVE_M_R 9 + + +/* indirect fixed size. */ +#define CRISV10_IND_ADDX 0 +#define CRISV10_IND_MOVX 1 +#define CRISV10_IND_SUBX 2 +#define CRISV10_IND_CMPX 3 +#define CRISV10_IND_JUMP_M 4 +#define CRISV10_IND_DIP 5 +#define CRISV10_IND_JUMP_R 6 +#define CRISV17_IND_ADDC 6 +#define CRISV10_IND_BOUND 7 +#define CRISV10_IND_BCC_M 7 +#define CRISV10_IND_MOVE_M_SPR 8 +#define CRISV10_IND_MOVE_SPR_M 9 +#define CRISV10_IND_SUB 10 +#define CRISV10_IND_CMP 11 +#define CRISV10_IND_AND 12 +#define CRISV10_IND_OR 13 +#define CRISV10_IND_MOVE_R_M 15 + +#define CRISV10_IND_MOVEM_M_R 14 +#define CRISV10_IND_MOVEM_R_M 15 + diff --git a/target/cris/crisv32-decode.h b/target/cris/crisv32-decode.h new file mode 100644 index 0000000000..cdc2f8cbe6 --- /dev/null +++ b/target/cris/crisv32-decode.h @@ -0,0 +1,133 @@ +/* + * CRIS insn decoding macros. + * + * Copyright (c) 2007 AXIS Communications AB + * Written by Edgar E. Iglesias. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef CRISV32_DECODE_H +#define CRISV32_DECODE_H + +/* Convenient binary macros. */ +#define HEX__(n) 0x##n##LU +#define B8__(x) ((x&0x0000000FLU)?1:0) \ + + ((x&0x000000F0LU)?2:0) \ + + ((x&0x00000F00LU)?4:0) \ + + ((x&0x0000F000LU)?8:0) \ + + ((x&0x000F0000LU)?16:0) \ + + ((x&0x00F00000LU)?32:0) \ + + ((x&0x0F000000LU)?64:0) \ + + ((x&0xF0000000LU)?128:0) +#define B8(d) ((unsigned char)B8__(HEX__(d))) + +/* Quick imm. */ +#define DEC_BCCQ {B8(00000000), B8(11110000)} +#define DEC_ADDOQ {B8(00010000), B8(11110000)} +#define DEC_ADDQ {B8(00100000), B8(11111100)} +#define DEC_MOVEQ {B8(00100100), B8(11111100)} +#define DEC_SUBQ {B8(00101000), B8(11111100)} +#define DEC_CMPQ {B8(00101100), B8(11111100)} +#define DEC_ANDQ {B8(00110000), B8(11111100)} +#define DEC_ORQ {B8(00110100), B8(11111100)} +#define DEC_BTSTQ {B8(00111000), B8(11111110)} +#define DEC_ASRQ {B8(00111010), B8(11111110)} +#define DEC_LSLQ {B8(00111100), B8(11111110)} +#define DEC_LSRQ {B8(00111110), B8(11111110)} + +/* Register. */ +#define DEC_MOVU_R {B8(01000100), B8(11111110)} +#define DEC_MOVU_R {B8(01000100), B8(11111110)} +#define DEC_MOVS_R {B8(01000110), B8(11111110)} +#define DEC_MOVE_R {B8(01100100), B8(11111100)} +#define DEC_MOVE_RP {B8(01100011), B8(11111111)} +#define DEC_MOVE_PR {B8(01100111), B8(11111111)} +#define DEC_DSTEP_R {B8(01101111), B8(11111111)} +#define DEC_MOVE_RS {B8(10110111), B8(11111111)} +#define DEC_MOVE_SR {B8(11110111), B8(11111111)} +#define DEC_ADDU_R {B8(01000000), B8(11111110)} +#define DEC_ADDS_R {B8(01000010), B8(11111110)} +#define DEC_ADD_R {B8(01100000), B8(11111100)} +#define DEC_ADDI_R {B8(01010000), B8(11111100)} +#define DEC_MULS_R {B8(11010000), B8(11111100)} +#define DEC_MULU_R {B8(10010000), B8(11111100)} +#define DEC_ADDI_ACR {B8(01010100), B8(11111100)} +#define DEC_NEG_R {B8(01011000), B8(11111100)} +#define DEC_BOUND_R {B8(01011100), B8(11111100)} +#define DEC_SUBU_R {B8(01001000), B8(11111110)} +#define DEC_SUBS_R {B8(01001010), B8(11111110)} +#define DEC_SUB_R {B8(01101000), B8(11111100)} +#define DEC_CMP_R {B8(01101100), B8(11111100)} +#define DEC_AND_R {B8(01110000), B8(11111100)} +#define DEC_ABS_R {B8(01101011), B8(11111111)} +#define DEC_LZ_R {B8(01110011), B8(11111111)} +#define DEC_MCP_R {B8(01111111), B8(11111111)} +#define DEC_SWAP_R {B8(01110111), B8(11111111)} +#define DEC_XOR_R {B8(01111011), B8(11111111)} +#define DEC_LSL_R {B8(01001100), B8(11111100)} +#define DEC_LSR_R {B8(01111100), B8(11111100)} +#define DEC_ASR_R {B8(01111000), B8(11111100)} +#define DEC_OR_R {B8(01110100), B8(11111100)} +#define DEC_BTST_R {B8(01001111), B8(11111111)} + +/* Fixed. */ +#define DEC_SETF {B8(01011011), B8(11111111)} +#define DEC_CLEARF {B8(01011111), B8(11111111)} + +/* Memory. */ +#define DEC_ADDU_M {B8(10000000), B8(10111110)} +#define DEC_ADDS_M {B8(10000010), B8(10111110)} +#define DEC_MOVU_M {B8(10000100), B8(10111110)} +#define DEC_MOVS_M {B8(10000110), B8(10111110)} +#define DEC_SUBU_M {B8(10001000), B8(10111110)} +#define DEC_SUBS_M {B8(10001010), B8(10111110)} +#define DEC_CMPU_M {B8(10001100), B8(10111110)} +#define DEC_CMPS_M {B8(10001110), B8(10111110)} +#define DEC_ADDO_M {B8(10010100), B8(10111100)} +#define DEC_BOUND_M {B8(10011100), B8(10111100)} +#define DEC_ADD_M {B8(10100000), B8(10111100)} +#define DEC_MOVE_MR {B8(10100100), B8(10111100)} +#define DEC_SUB_M {B8(10101000), B8(10111100)} +#define DEC_CMP_M {B8(10101100), B8(10111100)} +#define DEC_AND_M {B8(10110000), B8(10111100)} +#define DEC_OR_M {B8(10110100), B8(10111100)} +#define DEC_TEST_M {B8(10111000), B8(10111100)} +#define DEC_MOVE_RM {B8(10111100), B8(10111100)} + +#define DEC_ADDC_R {B8(01010111), B8(11111111)} +#define DEC_ADDC_MR {B8(10011010), B8(10111111)} +#define DEC_LAPCQ {B8(10010111), B8(11111111)} +#define DEC_LAPC_IM {B8(11010111), B8(11111111)} + +#define DEC_MOVE_MP {B8(10100011), B8(10111111)} +#define DEC_MOVE_PM {B8(10100111), B8(10111111)} + +#define DEC_SCC_R {B8(01010011), B8(11111111)} +#define DEC_RFE_ETC {B8(10010011), B8(11111111)} +#define DEC_JUMP_P {B8(10011111), B8(11111111)} +#define DEC_BCC_IM {B8(11011111), B8(11111111)} +#define DEC_JAS_R {B8(10011011), B8(11111111)} +#define DEC_JASC_R {B8(10110011), B8(11111111)} +#define DEC_JAS_IM {B8(11011011), B8(11111111)} +#define DEC_JASC_IM {B8(11110011), B8(11111111)} +#define DEC_BAS_IM {B8(11101011), B8(11111111)} +#define DEC_BASC_IM {B8(11101111), B8(11111111)} +#define DEC_MOVEM_MR {B8(10111011), B8(10111111)} +#define DEC_MOVEM_RM {B8(10111111), B8(10111111)} + +#define DEC_FTAG_FIDX_D_M {B8(10101011), B8(11111111)} +#define DEC_FTAG_FIDX_I_M {B8(11010011), B8(11111111)} + +#endif diff --git a/target/cris/gdbstub.c b/target/cris/gdbstub.c new file mode 100644 index 0000000000..3a72ee2a98 --- /dev/null +++ b/target/cris/gdbstub.c @@ -0,0 +1,131 @@ +/* + * CRIS gdb server stub + * + * Copyright (c) 2003-2005 Fabrice Bellard + * Copyright (c) 2013 SUSE LINUX Products GmbH + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ +#include "qemu/osdep.h" +#include "qemu-common.h" +#include "cpu.h" +#include "exec/gdbstub.h" + +int crisv10_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) +{ + CRISCPU *cpu = CRIS_CPU(cs); + CPUCRISState *env = &cpu->env; + + if (n < 15) { + return gdb_get_reg32(mem_buf, env->regs[n]); + } + + if (n == 15) { + return gdb_get_reg32(mem_buf, env->pc); + } + + if (n < 32) { + switch (n) { + case 16: + return gdb_get_reg8(mem_buf, env->pregs[n - 16]); + case 17: + return gdb_get_reg8(mem_buf, env->pregs[n - 16]); + case 20: + case 21: + return gdb_get_reg16(mem_buf, env->pregs[n - 16]); + default: + if (n >= 23) { + return gdb_get_reg32(mem_buf, env->pregs[n - 16]); + } + break; + } + } + return 0; +} + +int cris_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) +{ + CRISCPU *cpu = CRIS_CPU(cs); + CPUCRISState *env = &cpu->env; + uint8_t srs; + + srs = env->pregs[PR_SRS]; + if (n < 16) { + return gdb_get_reg32(mem_buf, env->regs[n]); + } + + if (n >= 21 && n < 32) { + return gdb_get_reg32(mem_buf, env->pregs[n - 16]); + } + if (n >= 33 && n < 49) { + return gdb_get_reg32(mem_buf, env->sregs[srs][n - 33]); + } + switch (n) { + case 16: + return gdb_get_reg8(mem_buf, env->pregs[0]); + case 17: + return gdb_get_reg8(mem_buf, env->pregs[1]); + case 18: + return gdb_get_reg32(mem_buf, env->pregs[2]); + case 19: + return gdb_get_reg8(mem_buf, srs); + case 20: + return gdb_get_reg16(mem_buf, env->pregs[4]); + case 32: + return gdb_get_reg32(mem_buf, env->pc); + } + + return 0; +} + +int cris_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) +{ + CRISCPU *cpu = CRIS_CPU(cs); + CPUCRISState *env = &cpu->env; + uint32_t tmp; + + if (n > 49) { + return 0; + } + + tmp = ldl_p(mem_buf); + + if (n < 16) { + env->regs[n] = tmp; + } + + if (n >= 21 && n < 32) { + env->pregs[n - 16] = tmp; + } + + /* FIXME: Should support function regs be writable? */ + switch (n) { + case 16: + return 1; + case 17: + return 1; + case 18: + env->pregs[PR_PID] = tmp; + break; + case 19: + return 1; + case 20: + return 2; + case 32: + env->pc = tmp; + break; + } + + return 4; +} diff --git a/target/cris/helper.c b/target/cris/helper.c new file mode 100644 index 0000000000..af78cca8b9 --- /dev/null +++ b/target/cris/helper.c @@ -0,0 +1,319 @@ +/* + * CRIS helper routines. + * + * Copyright (c) 2007 AXIS Communications AB + * Written by Edgar E. Iglesias. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "qemu/osdep.h" +#include "cpu.h" +#include "mmu.h" +#include "qemu/host-utils.h" +#include "exec/exec-all.h" +#include "exec/cpu_ldst.h" + + +//#define CRIS_HELPER_DEBUG + + +#ifdef CRIS_HELPER_DEBUG +#define D(x) x +#define D_LOG(...) qemu_log(__VA_ARGS__) +#else +#define D(x) +#define D_LOG(...) do { } while (0) +#endif + +#if defined(CONFIG_USER_ONLY) + +void cris_cpu_do_interrupt(CPUState *cs) +{ + CRISCPU *cpu = CRIS_CPU(cs); + CPUCRISState *env = &cpu->env; + + cs->exception_index = -1; + env->pregs[PR_ERP] = env->pc; +} + +void crisv10_cpu_do_interrupt(CPUState *cs) +{ + cris_cpu_do_interrupt(cs); +} + +int cris_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw, + int mmu_idx) +{ + CRISCPU *cpu = CRIS_CPU(cs); + + cs->exception_index = 0xaa; + cpu->env.pregs[PR_EDA] = address; + cpu_dump_state(cs, stderr, fprintf, 0); + return 1; +} + +#else /* !CONFIG_USER_ONLY */ + + +static void cris_shift_ccs(CPUCRISState *env) +{ + uint32_t ccs; + /* Apply the ccs shift. */ + ccs = env->pregs[PR_CCS]; + ccs = ((ccs & 0xc0000000) | ((ccs << 12) >> 2)) & ~0x3ff; + env->pregs[PR_CCS] = ccs; +} + +int cris_cpu_handle_mmu_fault(CPUState *cs, vaddr address, int rw, + int mmu_idx) +{ + CRISCPU *cpu = CRIS_CPU(cs); + CPUCRISState *env = &cpu->env; + struct cris_mmu_result res; + int prot, miss; + int r = -1; + target_ulong phy; + + qemu_log_mask(CPU_LOG_MMU, "%s addr=%" VADDR_PRIx " pc=%x rw=%x\n", + __func__, address, env->pc, rw); + miss = cris_mmu_translate(&res, env, address & TARGET_PAGE_MASK, + rw, mmu_idx, 0); + if (miss) { + if (cs->exception_index == EXCP_BUSFAULT) { + cpu_abort(cs, + "CRIS: Illegal recursive bus fault." + "addr=%" VADDR_PRIx " rw=%d\n", + address, rw); + } + + env->pregs[PR_EDA] = address; + cs->exception_index = EXCP_BUSFAULT; + env->fault_vector = res.bf_vec; + r = 1; + } else { + /* + * Mask off the cache selection bit. The ETRAX busses do not + * see the top bit. + */ + phy = res.phy & ~0x80000000; + prot = res.prot; + tlb_set_page(cs, address & TARGET_PAGE_MASK, phy, + prot, mmu_idx, TARGET_PAGE_SIZE); + r = 0; + } + if (r > 0) { + qemu_log_mask(CPU_LOG_MMU, + "%s returns %d irqreq=%x addr=%" VADDR_PRIx " phy=%x vec=%x" + " pc=%x\n", __func__, r, cs->interrupt_request, address, + res.phy, res.bf_vec, env->pc); + } + return r; +} + +void crisv10_cpu_do_interrupt(CPUState *cs) +{ + CRISCPU *cpu = CRIS_CPU(cs); + CPUCRISState *env = &cpu->env; + int ex_vec = -1; + + D_LOG("exception index=%d interrupt_req=%d\n", + cs->exception_index, + cs->interrupt_request); + + if (env->dslot) { + /* CRISv10 never takes interrupts while in a delay-slot. */ + cpu_abort(cs, "CRIS: Interrupt on delay-slot\n"); + } + + assert(!(env->pregs[PR_CCS] & PFIX_FLAG)); + switch (cs->exception_index) { + case EXCP_BREAK: + /* These exceptions are genereated by the core itself. + ERP should point to the insn following the brk. */ + ex_vec = env->trap_vector; + env->pregs[PRV10_BRP] = env->pc; + break; + + case EXCP_NMI: + /* NMI is hardwired to vector zero. */ + ex_vec = 0; + env->pregs[PR_CCS] &= ~M_FLAG_V10; + env->pregs[PRV10_BRP] = env->pc; + break; + + case EXCP_BUSFAULT: + cpu_abort(cs, "Unhandled busfault"); + break; + + default: + /* The interrupt controller gives us the vector. */ + ex_vec = env->interrupt_vector; + /* Normal interrupts are taken between + TB's. env->pc is valid here. */ + env->pregs[PR_ERP] = env->pc; + break; + } + + if (env->pregs[PR_CCS] & U_FLAG) { + /* Swap stack pointers. */ + env->pregs[PR_USP] = env->regs[R_SP]; + env->regs[R_SP] = env->ksp; + } + + /* Now that we are in kernel mode, load the handlers address. */ + env->pc = cpu_ldl_code(env, env->pregs[PR_EBP] + ex_vec * 4); + env->locked_irq = 1; + env->pregs[PR_CCS] |= F_FLAG_V10; /* set F. */ + + qemu_log_mask(CPU_LOG_INT, "%s isr=%x vec=%x ccs=%x pid=%d erp=%x\n", + __func__, env->pc, ex_vec, + env->pregs[PR_CCS], + env->pregs[PR_PID], + env->pregs[PR_ERP]); +} + +void cris_cpu_do_interrupt(CPUState *cs) +{ + CRISCPU *cpu = CRIS_CPU(cs); + CPUCRISState *env = &cpu->env; + int ex_vec = -1; + + D_LOG("exception index=%d interrupt_req=%d\n", + cs->exception_index, + cs->interrupt_request); + + switch (cs->exception_index) { + case EXCP_BREAK: + /* These exceptions are genereated by the core itself. + ERP should point to the insn following the brk. */ + ex_vec = env->trap_vector; + env->pregs[PR_ERP] = env->pc; + break; + + case EXCP_NMI: + /* NMI is hardwired to vector zero. */ + ex_vec = 0; + env->pregs[PR_CCS] &= ~M_FLAG_V32; + env->pregs[PR_NRP] = env->pc; + break; + + case EXCP_BUSFAULT: + ex_vec = env->fault_vector; + env->pregs[PR_ERP] = env->pc; + break; + + default: + /* The interrupt controller gives us the vector. */ + ex_vec = env->interrupt_vector; + /* Normal interrupts are taken between + TB's. env->pc is valid here. */ + env->pregs[PR_ERP] = env->pc; + break; + } + + /* Fill in the IDX field. */ + env->pregs[PR_EXS] = (ex_vec & 0xff) << 8; + + if (env->dslot) { + D_LOG("excp isr=%x PC=%x ds=%d SP=%x" + " ERP=%x pid=%x ccs=%x cc=%d %x\n", + ex_vec, env->pc, env->dslot, + env->regs[R_SP], + env->pregs[PR_ERP], env->pregs[PR_PID], + env->pregs[PR_CCS], + env->cc_op, env->cc_mask); + /* We loose the btarget, btaken state here so rexec the + branch. */ + env->pregs[PR_ERP] -= env->dslot; + /* Exception starts with dslot cleared. */ + env->dslot = 0; + } + + if (env->pregs[PR_CCS] & U_FLAG) { + /* Swap stack pointers. */ + env->pregs[PR_USP] = env->regs[R_SP]; + env->regs[R_SP] = env->ksp; + } + + /* Apply the CRIS CCS shift. Clears U if set. */ + cris_shift_ccs(env); + + /* Now that we are in kernel mode, load the handlers address. + This load may not fault, real hw leaves that behaviour as + undefined. */ + env->pc = cpu_ldl_code(env, env->pregs[PR_EBP] + ex_vec * 4); + + /* Clear the excption_index to avoid spurios hw_aborts for recursive + bus faults. */ + cs->exception_index = -1; + + D_LOG("%s isr=%x vec=%x ccs=%x pid=%d erp=%x\n", + __func__, env->pc, ex_vec, + env->pregs[PR_CCS], + env->pregs[PR_PID], + env->pregs[PR_ERP]); +} + +hwaddr cris_cpu_get_phys_page_debug(CPUState *cs, vaddr addr) +{ + CRISCPU *cpu = CRIS_CPU(cs); + uint32_t phy = addr; + struct cris_mmu_result res; + int miss; + + miss = cris_mmu_translate(&res, &cpu->env, addr, 0, 0, 1); + /* If D TLB misses, try I TLB. */ + if (miss) { + miss = cris_mmu_translate(&res, &cpu->env, addr, 2, 0, 1); + } + + if (!miss) { + phy = res.phy; + } + D(fprintf(stderr, "%s %x -> %x\n", __func__, addr, phy)); + return phy; +} +#endif + +bool cris_cpu_exec_interrupt(CPUState *cs, int interrupt_request) +{ + CPUClass *cc = CPU_GET_CLASS(cs); + CRISCPU *cpu = CRIS_CPU(cs); + CPUCRISState *env = &cpu->env; + bool ret = false; + + if (interrupt_request & CPU_INTERRUPT_HARD + && (env->pregs[PR_CCS] & I_FLAG) + && !env->locked_irq) { + cs->exception_index = EXCP_IRQ; + cc->do_interrupt(cs); + ret = true; + } + if (interrupt_request & CPU_INTERRUPT_NMI) { + unsigned int m_flag_archval; + if (env->pregs[PR_VR] < 32) { + m_flag_archval = M_FLAG_V10; + } else { + m_flag_archval = M_FLAG_V32; + } + if ((env->pregs[PR_CCS] & m_flag_archval)) { + cs->exception_index = EXCP_NMI; + cc->do_interrupt(cs); + ret = true; + } + } + + return ret; +} diff --git a/target/cris/helper.h b/target/cris/helper.h new file mode 100644 index 0000000000..ff3595641a --- /dev/null +++ b/target/cris/helper.h @@ -0,0 +1,24 @@ +DEF_HELPER_2(raise_exception, void, env, i32) +DEF_HELPER_2(tlb_flush_pid, void, env, i32) +DEF_HELPER_2(spc_write, void, env, i32) +DEF_HELPER_1(rfe, void, env) +DEF_HELPER_1(rfn, void, env) + +DEF_HELPER_3(movl_sreg_reg, void, env, i32, i32) +DEF_HELPER_3(movl_reg_sreg, void, env, i32, i32) + +DEF_HELPER_FLAGS_1(lz, TCG_CALL_NO_SE, i32, i32) +DEF_HELPER_FLAGS_4(btst, TCG_CALL_NO_SE, i32, env, i32, i32, i32) + +DEF_HELPER_FLAGS_4(evaluate_flags_muls, TCG_CALL_NO_SE, i32, env, i32, i32, i32) +DEF_HELPER_FLAGS_4(evaluate_flags_mulu, TCG_CALL_NO_SE, i32, env, i32, i32, i32) +DEF_HELPER_FLAGS_5(evaluate_flags_mcp, TCG_CALL_NO_SE, i32, env, + i32, i32, i32, i32) +DEF_HELPER_FLAGS_5(evaluate_flags_alu_4, TCG_CALL_NO_SE, i32, env, + i32, i32, i32, i32) +DEF_HELPER_FLAGS_5(evaluate_flags_sub_4, TCG_CALL_NO_SE, i32, env, + i32, i32, i32, i32) +DEF_HELPER_FLAGS_3(evaluate_flags_move_4, TCG_CALL_NO_SE, i32, env, i32, i32) +DEF_HELPER_FLAGS_3(evaluate_flags_move_2, TCG_CALL_NO_SE, i32, env, i32, i32) +DEF_HELPER_1(evaluate_flags, void, env) +DEF_HELPER_1(top_evaluate_flags, void, env) diff --git a/target/cris/machine.c b/target/cris/machine.c new file mode 100644 index 0000000000..6b797e8c1d --- /dev/null +++ b/target/cris/machine.c @@ -0,0 +1,95 @@ +/* + * CRIS virtual CPU state save/load support + * + * Copyright (c) 2012 Red Hat, Inc. + * Written by Juan Quintela <quintela@redhat.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "qemu/osdep.h" +#include "qemu-common.h" +#include "cpu.h" +#include "hw/hw.h" +#include "migration/cpu.h" + +static const VMStateDescription vmstate_tlbset = { + .name = "cpu/tlbset", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT32(lo, TLBSet), + VMSTATE_UINT32(hi, TLBSet), + VMSTATE_END_OF_LIST() + } +}; + +static const VMStateDescription vmstate_cris_env = { + .name = "env", + .version_id = 2, + .minimum_version_id = 2, + .fields = (VMStateField[]) { + VMSTATE_UINT32_ARRAY(regs, CPUCRISState, 16), + VMSTATE_UINT32_ARRAY(pregs, CPUCRISState, 16), + VMSTATE_UINT32(pc, CPUCRISState), + VMSTATE_UINT32(ksp, CPUCRISState), + VMSTATE_INT32(dslot, CPUCRISState), + VMSTATE_INT32(btaken, CPUCRISState), + VMSTATE_UINT32(btarget, CPUCRISState), + VMSTATE_UINT32(cc_op, CPUCRISState), + VMSTATE_UINT32(cc_mask, CPUCRISState), + VMSTATE_UINT32(cc_dest, CPUCRISState), + VMSTATE_UINT32(cc_src, CPUCRISState), + VMSTATE_UINT32(cc_result, CPUCRISState), + VMSTATE_INT32(cc_size, CPUCRISState), + VMSTATE_INT32(cc_x, CPUCRISState), + VMSTATE_INT32(locked_irq, CPUCRISState), + VMSTATE_INT32(interrupt_vector, CPUCRISState), + VMSTATE_INT32(fault_vector, CPUCRISState), + VMSTATE_INT32(trap_vector, CPUCRISState), + VMSTATE_UINT32_ARRAY(sregs[0], CPUCRISState, 16), + VMSTATE_UINT32_ARRAY(sregs[1], CPUCRISState, 16), + VMSTATE_UINT32_ARRAY(sregs[2], CPUCRISState, 16), + VMSTATE_UINT32_ARRAY(sregs[3], CPUCRISState, 16), + VMSTATE_UINT32(mmu_rand_lfsr, CPUCRISState), + VMSTATE_STRUCT_ARRAY(tlbsets[0][0], CPUCRISState, 16, 0, + vmstate_tlbset, TLBSet), + VMSTATE_STRUCT_ARRAY(tlbsets[0][1], CPUCRISState, 16, 0, + vmstate_tlbset, TLBSet), + VMSTATE_STRUCT_ARRAY(tlbsets[0][2], CPUCRISState, 16, 0, + vmstate_tlbset, TLBSet), + VMSTATE_STRUCT_ARRAY(tlbsets[0][3], CPUCRISState, 16, 0, + vmstate_tlbset, TLBSet), + VMSTATE_STRUCT_ARRAY(tlbsets[1][0], CPUCRISState, 16, 0, + vmstate_tlbset, TLBSet), + VMSTATE_STRUCT_ARRAY(tlbsets[1][1], CPUCRISState, 16, 0, + vmstate_tlbset, TLBSet), + VMSTATE_STRUCT_ARRAY(tlbsets[1][2], CPUCRISState, 16, 0, + vmstate_tlbset, TLBSet), + VMSTATE_STRUCT_ARRAY(tlbsets[1][3], CPUCRISState, 16, 0, + vmstate_tlbset, TLBSet), + VMSTATE_END_OF_LIST() + } +}; + +const VMStateDescription vmstate_cris_cpu = { + .name = "cpu", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_CPU(), + VMSTATE_STRUCT(env, CRISCPU, 1, vmstate_cris_env, CPUCRISState), + VMSTATE_END_OF_LIST() + } +}; diff --git a/target/cris/mmu.c b/target/cris/mmu.c new file mode 100644 index 0000000000..b8db908823 --- /dev/null +++ b/target/cris/mmu.c @@ -0,0 +1,362 @@ +/* + * CRIS mmu emulation. + * + * Copyright (c) 2007 AXIS Communications AB + * Written by Edgar E. Iglesias. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "qemu/osdep.h" +#include "cpu.h" +#include "exec/exec-all.h" +#include "mmu.h" + +#ifdef DEBUG +#define D(x) x +#define D_LOG(...) qemu_log(__VA_ARGS__) +#else +#define D(x) do { } while (0) +#define D_LOG(...) do { } while (0) +#endif + +void cris_mmu_init(CPUCRISState *env) +{ + env->mmu_rand_lfsr = 0xcccc; +} + +#define SR_POLYNOM 0x8805 +static inline unsigned int compute_polynom(unsigned int sr) +{ + unsigned int i; + unsigned int f; + + f = 0; + for (i = 0; i < 16; i++) + f += ((SR_POLYNOM >> i) & 1) & ((sr >> i) & 1); + + return f; +} + +static void cris_mmu_update_rand_lfsr(CPUCRISState *env) +{ + unsigned int f; + + /* Update lfsr at every fault. */ + f = compute_polynom(env->mmu_rand_lfsr); + env->mmu_rand_lfsr >>= 1; + env->mmu_rand_lfsr |= (f << 15); + env->mmu_rand_lfsr &= 0xffff; +} + +static inline int cris_mmu_enabled(uint32_t rw_gc_cfg) +{ + return (rw_gc_cfg & 12) != 0; +} + +static inline int cris_mmu_segmented_addr(int seg, uint32_t rw_mm_cfg) +{ + return (1 << seg) & rw_mm_cfg; +} + +static uint32_t cris_mmu_translate_seg(CPUCRISState *env, int seg) +{ + uint32_t base; + int i; + + if (seg < 8) + base = env->sregs[SFR_RW_MM_KBASE_LO]; + else + base = env->sregs[SFR_RW_MM_KBASE_HI]; + + i = seg & 7; + base >>= i * 4; + base &= 15; + + base <<= 28; + return base; +} +/* Used by the tlb decoder. */ +#define EXTRACT_FIELD(src, start, end) \ + (((src) >> start) & ((1 << (end - start + 1)) - 1)) + +static inline void set_field(uint32_t *dst, unsigned int val, + unsigned int offset, unsigned int width) +{ + uint32_t mask; + + mask = (1 << width) - 1; + mask <<= offset; + val <<= offset; + + val &= mask; + *dst &= ~(mask); + *dst |= val; +} + +#ifdef DEBUG +static void dump_tlb(CPUCRISState *env, int mmu) +{ + int set; + int idx; + uint32_t hi, lo, tlb_vpn, tlb_pfn; + + for (set = 0; set < 4; set++) { + for (idx = 0; idx < 16; idx++) { + lo = env->tlbsets[mmu][set][idx].lo; + hi = env->tlbsets[mmu][set][idx].hi; + tlb_vpn = EXTRACT_FIELD(hi, 13, 31); + tlb_pfn = EXTRACT_FIELD(lo, 13, 31); + + printf ("TLB: [%d][%d] hi=%x lo=%x v=%x p=%x\n", + set, idx, hi, lo, tlb_vpn, tlb_pfn); + } + } +} +#endif + +/* rw 0 = read, 1 = write, 2 = exec. */ +static int cris_mmu_translate_page(struct cris_mmu_result *res, + CPUCRISState *env, uint32_t vaddr, + int rw, int usermode, int debug) +{ + unsigned int vpage; + unsigned int idx; + uint32_t pid, lo, hi; + uint32_t tlb_vpn, tlb_pfn = 0; + int tlb_pid, tlb_g, tlb_v, tlb_k, tlb_w, tlb_x; + int cfg_v, cfg_k, cfg_w, cfg_x; + int set, match = 0; + uint32_t r_cause; + uint32_t r_cfg; + int rwcause; + int mmu = 1; /* Data mmu is default. */ + int vect_base; + + r_cause = env->sregs[SFR_R_MM_CAUSE]; + r_cfg = env->sregs[SFR_RW_MM_CFG]; + pid = env->pregs[PR_PID] & 0xff; + + switch (rw) { + case 2: rwcause = CRIS_MMU_ERR_EXEC; mmu = 0; break; + case 1: rwcause = CRIS_MMU_ERR_WRITE; break; + default: + case 0: rwcause = CRIS_MMU_ERR_READ; break; + } + + /* I exception vectors 4 - 7, D 8 - 11. */ + vect_base = (mmu + 1) * 4; + + vpage = vaddr >> 13; + + /* We know the index which to check on each set. + Scan both I and D. */ +#if 0 + for (set = 0; set < 4; set++) { + for (idx = 0; idx < 16; idx++) { + lo = env->tlbsets[mmu][set][idx].lo; + hi = env->tlbsets[mmu][set][idx].hi; + tlb_vpn = EXTRACT_FIELD(hi, 13, 31); + tlb_pfn = EXTRACT_FIELD(lo, 13, 31); + + printf ("TLB: [%d][%d] hi=%x lo=%x v=%x p=%x\n", + set, idx, hi, lo, tlb_vpn, tlb_pfn); + } + } +#endif + + idx = vpage & 15; + for (set = 0; set < 4; set++) + { + lo = env->tlbsets[mmu][set][idx].lo; + hi = env->tlbsets[mmu][set][idx].hi; + + tlb_vpn = hi >> 13; + tlb_pid = EXTRACT_FIELD(hi, 0, 7); + tlb_g = EXTRACT_FIELD(lo, 4, 4); + + D_LOG("TLB[%d][%d][%d] v=%x vpage=%x lo=%x hi=%x\n", + mmu, set, idx, tlb_vpn, vpage, lo, hi); + if ((tlb_g || (tlb_pid == pid)) + && tlb_vpn == vpage) { + match = 1; + break; + } + } + + res->bf_vec = vect_base; + if (match) { + cfg_w = EXTRACT_FIELD(r_cfg, 19, 19); + cfg_k = EXTRACT_FIELD(r_cfg, 18, 18); + cfg_x = EXTRACT_FIELD(r_cfg, 17, 17); + cfg_v = EXTRACT_FIELD(r_cfg, 16, 16); + + tlb_pfn = EXTRACT_FIELD(lo, 13, 31); + tlb_v = EXTRACT_FIELD(lo, 3, 3); + tlb_k = EXTRACT_FIELD(lo, 2, 2); + tlb_w = EXTRACT_FIELD(lo, 1, 1); + tlb_x = EXTRACT_FIELD(lo, 0, 0); + + /* + set_exception_vector(0x04, i_mmu_refill); + set_exception_vector(0x05, i_mmu_invalid); + set_exception_vector(0x06, i_mmu_access); + set_exception_vector(0x07, i_mmu_execute); + set_exception_vector(0x08, d_mmu_refill); + set_exception_vector(0x09, d_mmu_invalid); + set_exception_vector(0x0a, d_mmu_access); + set_exception_vector(0x0b, d_mmu_write); + */ + if (cfg_k && tlb_k && usermode) { + D(printf ("tlb: kernel protected %x lo=%x pc=%x\n", + vaddr, lo, env->pc)); + match = 0; + res->bf_vec = vect_base + 2; + } else if (rw == 1 && cfg_w && !tlb_w) { + D(printf ("tlb: write protected %x lo=%x pc=%x\n", + vaddr, lo, env->pc)); + match = 0; + /* write accesses never go through the I mmu. */ + res->bf_vec = vect_base + 3; + } else if (rw == 2 && cfg_x && !tlb_x) { + D(printf ("tlb: exec protected %x lo=%x pc=%x\n", + vaddr, lo, env->pc)); + match = 0; + res->bf_vec = vect_base + 3; + } else if (cfg_v && !tlb_v) { + D(printf ("tlb: invalid %x\n", vaddr)); + match = 0; + res->bf_vec = vect_base + 1; + } + + res->prot = 0; + if (match) { + res->prot |= PAGE_READ; + if (tlb_w) + res->prot |= PAGE_WRITE; + if (mmu == 0 && (cfg_x || tlb_x)) + res->prot |= PAGE_EXEC; + } + else + D(dump_tlb(env, mmu)); + } else { + /* If refill, provide a randomized set. */ + set = env->mmu_rand_lfsr & 3; + } + + if (!match && !debug) { + cris_mmu_update_rand_lfsr(env); + + /* Compute index. */ + idx = vpage & 15; + + /* Update RW_MM_TLB_SEL. */ + env->sregs[SFR_RW_MM_TLB_SEL] = 0; + set_field(&env->sregs[SFR_RW_MM_TLB_SEL], idx, 0, 4); + set_field(&env->sregs[SFR_RW_MM_TLB_SEL], set, 4, 2); + + /* Update RW_MM_CAUSE. */ + set_field(&r_cause, rwcause, 8, 2); + set_field(&r_cause, vpage, 13, 19); + set_field(&r_cause, pid, 0, 8); + env->sregs[SFR_R_MM_CAUSE] = r_cause; + D(printf("refill vaddr=%x pc=%x\n", vaddr, env->pc)); + } + + D(printf ("%s rw=%d mtch=%d pc=%x va=%x vpn=%x tlbvpn=%x pfn=%x pid=%x" + " %x cause=%x sel=%x sp=%x %x %x\n", + __func__, rw, match, env->pc, + vaddr, vpage, + tlb_vpn, tlb_pfn, tlb_pid, + pid, + r_cause, + env->sregs[SFR_RW_MM_TLB_SEL], + env->regs[R_SP], env->pregs[PR_USP], env->ksp)); + + res->phy = tlb_pfn << TARGET_PAGE_BITS; + return !match; +} + +void cris_mmu_flush_pid(CPUCRISState *env, uint32_t pid) +{ + CRISCPU *cpu = cris_env_get_cpu(env); + target_ulong vaddr; + unsigned int idx; + uint32_t lo, hi; + uint32_t tlb_vpn; + int tlb_pid, tlb_g, tlb_v; + unsigned int set; + unsigned int mmu; + + pid &= 0xff; + for (mmu = 0; mmu < 2; mmu++) { + for (set = 0; set < 4; set++) + { + for (idx = 0; idx < 16; idx++) { + lo = env->tlbsets[mmu][set][idx].lo; + hi = env->tlbsets[mmu][set][idx].hi; + + tlb_vpn = EXTRACT_FIELD(hi, 13, 31); + tlb_pid = EXTRACT_FIELD(hi, 0, 7); + tlb_g = EXTRACT_FIELD(lo, 4, 4); + tlb_v = EXTRACT_FIELD(lo, 3, 3); + + if (tlb_v && !tlb_g && (tlb_pid == pid)) { + vaddr = tlb_vpn << TARGET_PAGE_BITS; + D_LOG("flush pid=%x vaddr=%x\n", + pid, vaddr); + tlb_flush_page(CPU(cpu), vaddr); + } + } + } + } +} + +int cris_mmu_translate(struct cris_mmu_result *res, + CPUCRISState *env, uint32_t vaddr, + int rw, int mmu_idx, int debug) +{ + int seg; + int miss = 0; + int is_user = mmu_idx == MMU_USER_IDX; + uint32_t old_srs; + + old_srs= env->pregs[PR_SRS]; + + /* rw == 2 means exec, map the access to the insn mmu. */ + env->pregs[PR_SRS] = rw == 2 ? 1 : 2; + + if (!cris_mmu_enabled(env->sregs[SFR_RW_GC_CFG])) { + res->phy = vaddr; + res->prot = PAGE_BITS; + goto done; + } + + seg = vaddr >> 28; + if (!is_user && cris_mmu_segmented_addr(seg, env->sregs[SFR_RW_MM_CFG])) + { + uint32_t base; + + miss = 0; + base = cris_mmu_translate_seg(env, seg); + res->phy = base | (0x0fffffff & vaddr); + res->prot = PAGE_BITS; + } else { + miss = cris_mmu_translate_page(res, env, vaddr, rw, + is_user, debug); + } + done: + env->pregs[PR_SRS] = old_srs; + return miss; +} diff --git a/target/cris/mmu.h b/target/cris/mmu.h new file mode 100644 index 0000000000..8e249e812b --- /dev/null +++ b/target/cris/mmu.h @@ -0,0 +1,17 @@ +#define CRIS_MMU_ERR_EXEC 0 +#define CRIS_MMU_ERR_READ 1 +#define CRIS_MMU_ERR_WRITE 2 +#define CRIS_MMU_ERR_FLUSH 3 + +struct cris_mmu_result +{ + uint32_t phy; + int prot; + int bf_vec; +}; + +void cris_mmu_init(CPUCRISState *env); +void cris_mmu_flush_pid(CPUCRISState *env, uint32_t pid); +int cris_mmu_translate(struct cris_mmu_result *res, + CPUCRISState *env, uint32_t vaddr, + int rw, int mmu_idx, int debug); diff --git a/target/cris/op_helper.c b/target/cris/op_helper.c new file mode 100644 index 0000000000..504303913c --- /dev/null +++ b/target/cris/op_helper.c @@ -0,0 +1,639 @@ +/* + * CRIS helper routines + * + * Copyright (c) 2007 AXIS Communications + * Written by Edgar E. Iglesias + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "qemu/osdep.h" +#include "cpu.h" +#include "mmu.h" +#include "exec/helper-proto.h" +#include "qemu/host-utils.h" +#include "exec/exec-all.h" +#include "exec/cpu_ldst.h" + +//#define CRIS_OP_HELPER_DEBUG + + +#ifdef CRIS_OP_HELPER_DEBUG +#define D(x) x +#define D_LOG(...) qemu_log(__VA_ARGS__) +#else +#define D(x) +#define D_LOG(...) do { } while (0) +#endif + +#if !defined(CONFIG_USER_ONLY) +/* Try to fill the TLB and return an exception if error. If retaddr is + NULL, it means that the function was called in C code (i.e. not + from generated code or from helper.c) */ +void tlb_fill(CPUState *cs, target_ulong addr, MMUAccessType access_type, + int mmu_idx, uintptr_t retaddr) +{ + CRISCPU *cpu = CRIS_CPU(cs); + CPUCRISState *env = &cpu->env; + int ret; + + D_LOG("%s pc=%x tpc=%x ra=%p\n", __func__, + env->pc, env->pregs[PR_EDA], (void *)retaddr); + ret = cris_cpu_handle_mmu_fault(cs, addr, access_type, mmu_idx); + if (unlikely(ret)) { + if (retaddr) { + /* now we have a real cpu fault */ + if (cpu_restore_state(cs, retaddr)) { + /* Evaluate flags after retranslation. */ + helper_top_evaluate_flags(env); + } + } + cpu_loop_exit(cs); + } +} + +#endif + +void helper_raise_exception(CPUCRISState *env, uint32_t index) +{ + CPUState *cs = CPU(cris_env_get_cpu(env)); + + cs->exception_index = index; + cpu_loop_exit(cs); +} + +void helper_tlb_flush_pid(CPUCRISState *env, uint32_t pid) +{ +#if !defined(CONFIG_USER_ONLY) + pid &= 0xff; + if (pid != (env->pregs[PR_PID] & 0xff)) + cris_mmu_flush_pid(env, env->pregs[PR_PID]); +#endif +} + +void helper_spc_write(CPUCRISState *env, uint32_t new_spc) +{ +#if !defined(CONFIG_USER_ONLY) + CRISCPU *cpu = cris_env_get_cpu(env); + CPUState *cs = CPU(cpu); + + tlb_flush_page(cs, env->pregs[PR_SPC]); + tlb_flush_page(cs, new_spc); +#endif +} + +/* Used by the tlb decoder. */ +#define EXTRACT_FIELD(src, start, end) \ + (((src) >> start) & ((1 << (end - start + 1)) - 1)) + +void helper_movl_sreg_reg(CPUCRISState *env, uint32_t sreg, uint32_t reg) +{ +#if !defined(CONFIG_USER_ONLY) + CRISCPU *cpu = cris_env_get_cpu(env); +#endif + uint32_t srs; + srs = env->pregs[PR_SRS]; + srs &= 3; + env->sregs[srs][sreg] = env->regs[reg]; + +#if !defined(CONFIG_USER_ONLY) + if (srs == 1 || srs == 2) { + if (sreg == 6) { + /* Writes to tlb-hi write to mm_cause as a side + effect. */ + env->sregs[SFR_RW_MM_TLB_HI] = env->regs[reg]; + env->sregs[SFR_R_MM_CAUSE] = env->regs[reg]; + } + else if (sreg == 5) { + uint32_t set; + uint32_t idx; + uint32_t lo, hi; + uint32_t vaddr; + int tlb_v; + + idx = set = env->sregs[SFR_RW_MM_TLB_SEL]; + set >>= 4; + set &= 3; + + idx &= 15; + /* We've just made a write to tlb_lo. */ + lo = env->sregs[SFR_RW_MM_TLB_LO]; + /* Writes are done via r_mm_cause. */ + hi = env->sregs[SFR_R_MM_CAUSE]; + + vaddr = EXTRACT_FIELD(env->tlbsets[srs-1][set][idx].hi, + 13, 31); + vaddr <<= TARGET_PAGE_BITS; + tlb_v = EXTRACT_FIELD(env->tlbsets[srs-1][set][idx].lo, + 3, 3); + env->tlbsets[srs - 1][set][idx].lo = lo; + env->tlbsets[srs - 1][set][idx].hi = hi; + + D_LOG("tlb flush vaddr=%x v=%d pc=%x\n", + vaddr, tlb_v, env->pc); + if (tlb_v) { + tlb_flush_page(CPU(cpu), vaddr); + } + } + } +#endif +} + +void helper_movl_reg_sreg(CPUCRISState *env, uint32_t reg, uint32_t sreg) +{ + uint32_t srs; + env->pregs[PR_SRS] &= 3; + srs = env->pregs[PR_SRS]; + +#if !defined(CONFIG_USER_ONLY) + if (srs == 1 || srs == 2) + { + uint32_t set; + uint32_t idx; + uint32_t lo, hi; + + idx = set = env->sregs[SFR_RW_MM_TLB_SEL]; + set >>= 4; + set &= 3; + idx &= 15; + + /* Update the mirror regs. */ + hi = env->tlbsets[srs - 1][set][idx].hi; + lo = env->tlbsets[srs - 1][set][idx].lo; + env->sregs[SFR_RW_MM_TLB_HI] = hi; + env->sregs[SFR_RW_MM_TLB_LO] = lo; + } +#endif + env->regs[reg] = env->sregs[srs][sreg]; +} + +static void cris_ccs_rshift(CPUCRISState *env) +{ + uint32_t ccs; + + /* Apply the ccs shift. */ + ccs = env->pregs[PR_CCS]; + ccs = (ccs & 0xc0000000) | ((ccs & 0x0fffffff) >> 10); + if (ccs & U_FLAG) + { + /* Enter user mode. */ + env->ksp = env->regs[R_SP]; + env->regs[R_SP] = env->pregs[PR_USP]; + } + + env->pregs[PR_CCS] = ccs; +} + +void helper_rfe(CPUCRISState *env) +{ + int rflag = env->pregs[PR_CCS] & R_FLAG; + + D_LOG("rfe: erp=%x pid=%x ccs=%x btarget=%x\n", + env->pregs[PR_ERP], env->pregs[PR_PID], + env->pregs[PR_CCS], + env->btarget); + + cris_ccs_rshift(env); + + /* RFE sets the P_FLAG only if the R_FLAG is not set. */ + if (!rflag) + env->pregs[PR_CCS] |= P_FLAG; +} + +void helper_rfn(CPUCRISState *env) +{ + int rflag = env->pregs[PR_CCS] & R_FLAG; + + D_LOG("rfn: erp=%x pid=%x ccs=%x btarget=%x\n", + env->pregs[PR_ERP], env->pregs[PR_PID], + env->pregs[PR_CCS], + env->btarget); + + cris_ccs_rshift(env); + + /* Set the P_FLAG only if the R_FLAG is not set. */ + if (!rflag) + env->pregs[PR_CCS] |= P_FLAG; + + /* Always set the M flag. */ + env->pregs[PR_CCS] |= M_FLAG_V32; +} + +uint32_t helper_lz(uint32_t t0) +{ + return clz32(t0); +} + +uint32_t helper_btst(CPUCRISState *env, uint32_t t0, uint32_t t1, uint32_t ccs) +{ + /* FIXME: clean this up. */ + + /* des ref: + The N flag is set according to the selected bit in the dest reg. + The Z flag is set if the selected bit and all bits to the right are + zero. + The X flag is cleared. + Other flags are left untouched. + The destination reg is not affected.*/ + unsigned int fz, sbit, bset, mask, masked_t0; + + sbit = t1 & 31; + bset = !!(t0 & (1 << sbit)); + mask = sbit == 31 ? -1 : (1 << (sbit + 1)) - 1; + masked_t0 = t0 & mask; + fz = !(masked_t0 | bset); + + /* Clear the X, N and Z flags. */ + ccs = ccs & ~(X_FLAG | N_FLAG | Z_FLAG); + if (env->pregs[PR_VR] < 32) + ccs &= ~(V_FLAG | C_FLAG); + /* Set the N and Z flags accordingly. */ + ccs |= (bset << 3) | (fz << 2); + return ccs; +} + +static inline uint32_t evaluate_flags_writeback(CPUCRISState *env, + uint32_t flags, uint32_t ccs) +{ + unsigned int x, z, mask; + + /* Extended arithmetics, leave the z flag alone. */ + x = env->cc_x; + mask = env->cc_mask | X_FLAG; + if (x) { + z = flags & Z_FLAG; + mask = mask & ~z; + } + flags &= mask; + + /* all insn clear the x-flag except setf or clrf. */ + ccs &= ~mask; + ccs |= flags; + return ccs; +} + +uint32_t helper_evaluate_flags_muls(CPUCRISState *env, + uint32_t ccs, uint32_t res, uint32_t mof) +{ + uint32_t flags = 0; + int64_t tmp; + int dneg; + + dneg = ((int32_t)res) < 0; + + tmp = mof; + tmp <<= 32; + tmp |= res; + if (tmp == 0) + flags |= Z_FLAG; + else if (tmp < 0) + flags |= N_FLAG; + if ((dneg && mof != -1) + || (!dneg && mof != 0)) + flags |= V_FLAG; + return evaluate_flags_writeback(env, flags, ccs); +} + +uint32_t helper_evaluate_flags_mulu(CPUCRISState *env, + uint32_t ccs, uint32_t res, uint32_t mof) +{ + uint32_t flags = 0; + uint64_t tmp; + + tmp = mof; + tmp <<= 32; + tmp |= res; + if (tmp == 0) + flags |= Z_FLAG; + else if (tmp >> 63) + flags |= N_FLAG; + if (mof) + flags |= V_FLAG; + + return evaluate_flags_writeback(env, flags, ccs); +} + +uint32_t helper_evaluate_flags_mcp(CPUCRISState *env, uint32_t ccs, + uint32_t src, uint32_t dst, uint32_t res) +{ + uint32_t flags = 0; + + src = src & 0x80000000; + dst = dst & 0x80000000; + + if ((res & 0x80000000L) != 0L) + { + flags |= N_FLAG; + if (!src && !dst) + flags |= V_FLAG; + else if (src & dst) + flags |= R_FLAG; + } + else + { + if (res == 0L) + flags |= Z_FLAG; + if (src & dst) + flags |= V_FLAG; + if (dst | src) + flags |= R_FLAG; + } + + return evaluate_flags_writeback(env, flags, ccs); +} + +uint32_t helper_evaluate_flags_alu_4(CPUCRISState *env, uint32_t ccs, + uint32_t src, uint32_t dst, uint32_t res) +{ + uint32_t flags = 0; + + src = src & 0x80000000; + dst = dst & 0x80000000; + + if ((res & 0x80000000L) != 0L) + { + flags |= N_FLAG; + if (!src && !dst) + flags |= V_FLAG; + else if (src & dst) + flags |= C_FLAG; + } + else + { + if (res == 0L) + flags |= Z_FLAG; + if (src & dst) + flags |= V_FLAG; + if (dst | src) + flags |= C_FLAG; + } + + return evaluate_flags_writeback(env, flags, ccs); +} + +uint32_t helper_evaluate_flags_sub_4(CPUCRISState *env, uint32_t ccs, + uint32_t src, uint32_t dst, uint32_t res) +{ + uint32_t flags = 0; + + src = (~src) & 0x80000000; + dst = dst & 0x80000000; + + if ((res & 0x80000000L) != 0L) + { + flags |= N_FLAG; + if (!src && !dst) + flags |= V_FLAG; + else if (src & dst) + flags |= C_FLAG; + } + else + { + if (res == 0L) + flags |= Z_FLAG; + if (src & dst) + flags |= V_FLAG; + if (dst | src) + flags |= C_FLAG; + } + + flags ^= C_FLAG; + return evaluate_flags_writeback(env, flags, ccs); +} + +uint32_t helper_evaluate_flags_move_4(CPUCRISState *env, + uint32_t ccs, uint32_t res) +{ + uint32_t flags = 0; + + if ((int32_t)res < 0) + flags |= N_FLAG; + else if (res == 0L) + flags |= Z_FLAG; + + return evaluate_flags_writeback(env, flags, ccs); +} +uint32_t helper_evaluate_flags_move_2(CPUCRISState *env, + uint32_t ccs, uint32_t res) +{ + uint32_t flags = 0; + + if ((int16_t)res < 0L) + flags |= N_FLAG; + else if (res == 0) + flags |= Z_FLAG; + + return evaluate_flags_writeback(env, flags, ccs); +} + +/* TODO: This is expensive. We could split things up and only evaluate part of + CCR on a need to know basis. For now, we simply re-evaluate everything. */ +void helper_evaluate_flags(CPUCRISState *env) +{ + uint32_t src, dst, res; + uint32_t flags = 0; + + src = env->cc_src; + dst = env->cc_dest; + res = env->cc_result; + + if (env->cc_op == CC_OP_SUB || env->cc_op == CC_OP_CMP) + src = ~src; + + /* Now, evaluate the flags. This stuff is based on + Per Zander's CRISv10 simulator. */ + switch (env->cc_size) + { + case 1: + if ((res & 0x80L) != 0L) + { + flags |= N_FLAG; + if (((src & 0x80L) == 0L) + && ((dst & 0x80L) == 0L)) + { + flags |= V_FLAG; + } + else if (((src & 0x80L) != 0L) + && ((dst & 0x80L) != 0L)) + { + flags |= C_FLAG; + } + } + else + { + if ((res & 0xFFL) == 0L) + { + flags |= Z_FLAG; + } + if (((src & 0x80L) != 0L) + && ((dst & 0x80L) != 0L)) + { + flags |= V_FLAG; + } + if ((dst & 0x80L) != 0L + || (src & 0x80L) != 0L) + { + flags |= C_FLAG; + } + } + break; + case 2: + if ((res & 0x8000L) != 0L) + { + flags |= N_FLAG; + if (((src & 0x8000L) == 0L) + && ((dst & 0x8000L) == 0L)) + { + flags |= V_FLAG; + } + else if (((src & 0x8000L) != 0L) + && ((dst & 0x8000L) != 0L)) + { + flags |= C_FLAG; + } + } + else + { + if ((res & 0xFFFFL) == 0L) + { + flags |= Z_FLAG; + } + if (((src & 0x8000L) != 0L) + && ((dst & 0x8000L) != 0L)) + { + flags |= V_FLAG; + } + if ((dst & 0x8000L) != 0L + || (src & 0x8000L) != 0L) + { + flags |= C_FLAG; + } + } + break; + case 4: + if ((res & 0x80000000L) != 0L) + { + flags |= N_FLAG; + if (((src & 0x80000000L) == 0L) + && ((dst & 0x80000000L) == 0L)) + { + flags |= V_FLAG; + } + else if (((src & 0x80000000L) != 0L) && + ((dst & 0x80000000L) != 0L)) + { + flags |= C_FLAG; + } + } + else + { + if (res == 0L) + flags |= Z_FLAG; + if (((src & 0x80000000L) != 0L) + && ((dst & 0x80000000L) != 0L)) + flags |= V_FLAG; + if ((dst & 0x80000000L) != 0L + || (src & 0x80000000L) != 0L) + flags |= C_FLAG; + } + break; + default: + break; + } + + if (env->cc_op == CC_OP_SUB || env->cc_op == CC_OP_CMP) + flags ^= C_FLAG; + + env->pregs[PR_CCS] = evaluate_flags_writeback(env, flags, + env->pregs[PR_CCS]); +} + +void helper_top_evaluate_flags(CPUCRISState *env) +{ + switch (env->cc_op) + { + case CC_OP_MCP: + env->pregs[PR_CCS] = helper_evaluate_flags_mcp(env, + env->pregs[PR_CCS], env->cc_src, + env->cc_dest, env->cc_result); + break; + case CC_OP_MULS: + env->pregs[PR_CCS] = helper_evaluate_flags_muls(env, + env->pregs[PR_CCS], env->cc_result, + env->pregs[PR_MOF]); + break; + case CC_OP_MULU: + env->pregs[PR_CCS] = helper_evaluate_flags_mulu(env, + env->pregs[PR_CCS], env->cc_result, + env->pregs[PR_MOF]); + break; + case CC_OP_MOVE: + case CC_OP_AND: + case CC_OP_OR: + case CC_OP_XOR: + case CC_OP_ASR: + case CC_OP_LSR: + case CC_OP_LSL: + switch (env->cc_size) + { + case 4: + env->pregs[PR_CCS] = + helper_evaluate_flags_move_4(env, + env->pregs[PR_CCS], + env->cc_result); + break; + case 2: + env->pregs[PR_CCS] = + helper_evaluate_flags_move_2(env, + env->pregs[PR_CCS], + env->cc_result); + break; + default: + helper_evaluate_flags(env); + break; + } + break; + case CC_OP_FLAGS: + /* live. */ + break; + case CC_OP_SUB: + case CC_OP_CMP: + if (env->cc_size == 4) + env->pregs[PR_CCS] = + helper_evaluate_flags_sub_4(env, + env->pregs[PR_CCS], + env->cc_src, env->cc_dest, + env->cc_result); + else + helper_evaluate_flags(env); + break; + default: + { + switch (env->cc_size) + { + case 4: + env->pregs[PR_CCS] = + helper_evaluate_flags_alu_4(env, + env->pregs[PR_CCS], + env->cc_src, env->cc_dest, + env->cc_result); + break; + default: + helper_evaluate_flags(env); + break; + } + } + break; + } +} diff --git a/target/cris/opcode-cris.h b/target/cris/opcode-cris.h new file mode 100644 index 0000000000..e7ebb98cd0 --- /dev/null +++ b/target/cris/opcode-cris.h @@ -0,0 +1,355 @@ +/* cris.h -- Header file for CRIS opcode and register tables. + Copyright (C) 2000, 2001, 2004 Free Software Foundation, Inc. + Contributed by Axis Communications AB, Lund, Sweden. + Originally written for GAS 1.38.1 by Mikael Asker. + Updated, BFDized and GNUified by Hans-Peter Nilsson. + +This file is part of GAS, GDB and the GNU binutils. + +GAS, GDB, and GNU binutils is free software; you can redistribute it +and/or modify it under the terms of the GNU General Public License as +published by the Free Software Foundation; either version 2, or (at your +option) any later version. + +GAS, GDB, and GNU binutils are distributed in the hope that they will be +useful, but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, see <http://www.gnu.org/licenses/>. */ + +#ifndef __CRIS_H_INCLUDED_ +#define __CRIS_H_INCLUDED_ + +#if !defined(__STDC__) && !defined(const) +#define const +#endif + + +/* Registers. */ +#define MAX_REG (15) +#define CRIS_REG_SP (14) +#define CRIS_REG_PC (15) + +/* CPU version control of disassembly and assembly of instructions. + May affect how the instruction is assembled, at least the size of + immediate operands. */ +enum cris_insn_version_usage +{ + /* Any version. */ + cris_ver_version_all=0, + + /* Indeterminate (intended for disassembly only, or obsolete). */ + cris_ver_warning, + + /* Only for v0..3 (Etrax 1..4). */ + cris_ver_v0_3, + + /* Only for v3 or higher (ETRAX 4 and beyond). */ + cris_ver_v3p, + + /* Only for v8 (Etrax 100). */ + cris_ver_v8, + + /* Only for v8 or higher (ETRAX 100, ETRAX 100 LX). */ + cris_ver_v8p, + + /* Only for v0..10. FIXME: Not sure what to do with this. */ + cris_ver_sim_v0_10, + + /* Only for v0..10. */ + cris_ver_v0_10, + + /* Only for v3..10. (ETRAX 4, ETRAX 100 and ETRAX 100 LX). */ + cris_ver_v3_10, + + /* Only for v8..10 (ETRAX 100 and ETRAX 100 LX). */ + cris_ver_v8_10, + + /* Only for v10 (ETRAX 100 LX) and same series. */ + cris_ver_v10, + + /* Only for v10 (ETRAX 100 LX) and same series. */ + cris_ver_v10p, + + /* Only for v32 or higher (codename GUINNESS). + Of course some or all these of may change to cris_ver_v32p if/when + there's a new revision. */ + cris_ver_v32p +}; + + +/* Special registers. */ +struct cris_spec_reg +{ + const char *const name; + unsigned int number; + + /* The size of the register. */ + unsigned int reg_size; + + /* What CPU version the special register of that name is implemented + in. If cris_ver_warning, emit an unimplemented-warning. */ + enum cris_insn_version_usage applicable_version; + + /* There might be a specific warning for using a special register + here. */ + const char *const warning; +}; +extern const struct cris_spec_reg cris_spec_regs[]; + + +/* Support registers (kind of special too, but not named as such). */ +struct cris_support_reg +{ + const char *const name; + unsigned int number; +}; +extern const struct cris_support_reg cris_support_regs[]; + +/* Opcode-dependent constants. */ +#define AUTOINCR_BIT (0x04) + +/* Prefixes. */ +#define BDAP_QUICK_OPCODE (0x0100) +#define BDAP_QUICK_Z_BITS (0x0e00) + +#define BIAP_OPCODE (0x0540) +#define BIAP_Z_BITS (0x0a80) + +#define DIP_OPCODE (0x0970) +#define DIP_Z_BITS (0xf280) + +#define BDAP_INDIR_LOW (0x40) +#define BDAP_INDIR_LOW_Z (0x80) +#define BDAP_INDIR_HIGH (0x09) +#define BDAP_INDIR_HIGH_Z (0x02) + +#define BDAP_INDIR_OPCODE (BDAP_INDIR_HIGH * 0x0100 + BDAP_INDIR_LOW) +#define BDAP_INDIR_Z_BITS (BDAP_INDIR_HIGH_Z * 0x100 + BDAP_INDIR_LOW_Z) +#define BDAP_PC_LOW (BDAP_INDIR_LOW + CRIS_REG_PC) +#define BDAP_INCR_HIGH (BDAP_INDIR_HIGH + AUTOINCR_BIT) + +/* No prefix must have this code for its "match" bits in the + opcode-table. "BCC .+2" will do nicely. */ +#define NO_CRIS_PREFIX 0 + +/* Definitions for condition codes. */ +#define CC_CC 0x0 +#define CC_HS 0x0 +#define CC_CS 0x1 +#define CC_LO 0x1 +#define CC_NE 0x2 +#define CC_EQ 0x3 +#define CC_VC 0x4 +#define CC_VS 0x5 +#define CC_PL 0x6 +#define CC_MI 0x7 +#define CC_LS 0x8 +#define CC_HI 0x9 +#define CC_GE 0xA +#define CC_LT 0xB +#define CC_GT 0xC +#define CC_LE 0xD +#define CC_A 0xE +#define CC_EXT 0xF + +/* A table of strings "cc", "cs"... indexed with condition code + values as above. */ +extern const char *const cris_cc_strings[]; + +/* Bcc quick. */ +#define BRANCH_QUICK_LOW (0) +#define BRANCH_QUICK_HIGH (0) +#define BRANCH_QUICK_OPCODE (BRANCH_QUICK_HIGH * 0x0100 + BRANCH_QUICK_LOW) +#define BRANCH_QUICK_Z_BITS (0x0F00) + +/* BA quick. */ +#define BA_QUICK_HIGH (BRANCH_QUICK_HIGH + CC_A * 0x10) +#define BA_QUICK_OPCODE (BA_QUICK_HIGH * 0x100 + BRANCH_QUICK_LOW) + +/* Bcc [PC+]. */ +#define BRANCH_PC_LOW (0xFF) +#define BRANCH_INCR_HIGH (0x0D) +#define BA_PC_INCR_OPCODE \ + ((BRANCH_INCR_HIGH + CC_A * 0x10) * 0x0100 + BRANCH_PC_LOW) + +/* Jump. */ +/* Note that old versions generated special register 8 (in high bits) + and not-that-old versions recognized it as a jump-instruction. + That opcode now belongs to JUMPU. */ +#define JUMP_INDIR_OPCODE (0x0930) +#define JUMP_INDIR_Z_BITS (0xf2c0) +#define JUMP_PC_INCR_OPCODE \ + (JUMP_INDIR_OPCODE + AUTOINCR_BIT * 0x0100 + CRIS_REG_PC) + +#define MOVE_M_TO_PREG_OPCODE 0x0a30 +#define MOVE_M_TO_PREG_ZBITS 0x01c0 + +/* BDAP.D N,PC. */ +#define MOVE_PC_INCR_OPCODE_PREFIX \ + (((BDAP_INCR_HIGH | (CRIS_REG_PC << 4)) << 8) | BDAP_PC_LOW | (2 << 4)) +#define MOVE_PC_INCR_OPCODE_SUFFIX \ + (MOVE_M_TO_PREG_OPCODE | CRIS_REG_PC | (AUTOINCR_BIT << 8)) + +#define JUMP_PC_INCR_OPCODE_V32 (0x0DBF) + +/* BA DWORD (V32). */ +#define BA_DWORD_OPCODE (0x0EBF) + +/* Nop. */ +#define NOP_OPCODE (0x050F) +#define NOP_Z_BITS (0xFFFF ^ NOP_OPCODE) + +#define NOP_OPCODE_V32 (0x05B0) +#define NOP_Z_BITS_V32 (0xFFFF ^ NOP_OPCODE_V32) + +/* For the compatibility mode, let's use "MOVE R0,P0". Doesn't affect + registers or flags. Unfortunately shuts off interrupts for one cycle + for < v32, but there doesn't seem to be any alternative without that + effect. */ +#define NOP_OPCODE_COMMON (0x630) +#define NOP_OPCODE_ZBITS_COMMON (0xffff & ~NOP_OPCODE_COMMON) + +/* LAPC.D */ +#define LAPC_DWORD_OPCODE (0x0D7F) +#define LAPC_DWORD_Z_BITS (0x0fff & ~LAPC_DWORD_OPCODE) + +/* Structure of an opcode table entry. */ +enum cris_imm_oprnd_size_type +{ + /* No size is applicable. */ + SIZE_NONE, + + /* Always 32 bits. */ + SIZE_FIX_32, + + /* Indicated by size of special register. */ + SIZE_SPEC_REG, + + /* Indicated by size field, signed. */ + SIZE_FIELD_SIGNED, + + /* Indicated by size field, unsigned. */ + SIZE_FIELD_UNSIGNED, + + /* Indicated by size field, no sign implied. */ + SIZE_FIELD +}; + +/* For GDB. FIXME: Is this the best way to handle opcode + interpretation? */ +enum cris_op_type +{ + cris_not_implemented_op = 0, + cris_abs_op, + cris_addi_op, + cris_asr_op, + cris_asrq_op, + cris_ax_ei_setf_op, + cris_bdap_prefix, + cris_biap_prefix, + cris_break_op, + cris_btst_nop_op, + cris_clearf_di_op, + cris_dip_prefix, + cris_dstep_logshift_mstep_neg_not_op, + cris_eight_bit_offset_branch_op, + cris_move_mem_to_reg_movem_op, + cris_move_reg_to_mem_movem_op, + cris_move_to_preg_op, + cris_muls_op, + cris_mulu_op, + cris_none_reg_mode_add_sub_cmp_and_or_move_op, + cris_none_reg_mode_clear_test_op, + cris_none_reg_mode_jump_op, + cris_none_reg_mode_move_from_preg_op, + cris_quick_mode_add_sub_op, + cris_quick_mode_and_cmp_move_or_op, + cris_quick_mode_bdap_prefix, + cris_reg_mode_add_sub_cmp_and_or_move_op, + cris_reg_mode_clear_op, + cris_reg_mode_jump_op, + cris_reg_mode_move_from_preg_op, + cris_reg_mode_test_op, + cris_scc_op, + cris_sixteen_bit_offset_branch_op, + cris_three_operand_add_sub_cmp_and_or_op, + cris_three_operand_bound_op, + cris_two_operand_bound_op, + cris_xor_op +}; + +struct cris_opcode +{ + /* The name of the insn. */ + const char *name; + + /* Bits that must be 1 for a match. */ + unsigned int match; + + /* Bits that must be 0 for a match. */ + unsigned int lose; + + /* See the table in "opcodes/cris-opc.c". */ + const char *args; + + /* Nonzero if this is a delayed branch instruction. */ + char delayed; + + /* Size of immediate operands. */ + enum cris_imm_oprnd_size_type imm_oprnd_size; + + /* Indicates which version this insn was first implemented in. */ + enum cris_insn_version_usage applicable_version; + + /* What kind of operation this is. */ + enum cris_op_type op; +}; +extern const struct cris_opcode cris_opcodes[]; + + +/* These macros are for the target-specific flags in disassemble_info + used at disassembly. */ + +/* This insn accesses memory. This flag is more trustworthy than + checking insn_type for "dis_dref" which does not work for + e.g. "JSR [foo]". */ +#define CRIS_DIS_FLAG_MEMREF (1 << 0) + +/* The "target" field holds a register number. */ +#define CRIS_DIS_FLAG_MEM_TARGET_IS_REG (1 << 1) + +/* The "target2" field holds a register number; add it to "target". */ +#define CRIS_DIS_FLAG_MEM_TARGET2_IS_REG (1 << 2) + +/* Yet another add-on: the register in "target2" must be multiplied + by 2 before adding to "target". */ +#define CRIS_DIS_FLAG_MEM_TARGET2_MULT2 (1 << 3) + +/* Yet another add-on: the register in "target2" must be multiplied + by 4 (mutually exclusive with .._MULT2). */ +#define CRIS_DIS_FLAG_MEM_TARGET2_MULT4 (1 << 4) + +/* The register in "target2" is an indirect memory reference (of the + register there), add to "target". Assumed size is dword (mutually + exclusive with .._MULT[24]). */ +#define CRIS_DIS_FLAG_MEM_TARGET2_MEM (1 << 5) + +/* Add-on to CRIS_DIS_FLAG_MEM_TARGET2_MEM; the memory access is "byte"; + sign-extended before adding to "target". */ +#define CRIS_DIS_FLAG_MEM_TARGET2_MEM_BYTE (1 << 6) + +/* Add-on to CRIS_DIS_FLAG_MEM_TARGET2_MEM; the memory access is "word"; + sign-extended before adding to "target". */ +#define CRIS_DIS_FLAG_MEM_TARGET2_MEM_WORD (1 << 7) + +#endif /* __CRIS_H_INCLUDED_ */ + +/* + * Local variables: + * eval: (c-set-style "gnu") + * indent-tabs-mode: t + * End: + */ diff --git a/target/cris/translate.c b/target/cris/translate.c new file mode 100644 index 0000000000..b91042743f --- /dev/null +++ b/target/cris/translate.c @@ -0,0 +1,3413 @@ +/* + * CRIS emulation for qemu: main translation routines. + * + * Copyright (c) 2008 AXIS Communications AB + * Written by Edgar E. Iglesias. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ + +/* + * FIXME: + * The condition code translation is in need of attention. + */ + +#include "qemu/osdep.h" +#include "cpu.h" +#include "disas/disas.h" +#include "exec/exec-all.h" +#include "tcg-op.h" +#include "exec/helper-proto.h" +#include "mmu.h" +#include "exec/cpu_ldst.h" +#include "crisv32-decode.h" + +#include "exec/helper-gen.h" + +#include "trace-tcg.h" +#include "exec/log.h" + + +#define DISAS_CRIS 0 +#if DISAS_CRIS +# define LOG_DIS(...) qemu_log_mask(CPU_LOG_TB_IN_ASM, ## __VA_ARGS__) +#else +# define LOG_DIS(...) do { } while (0) +#endif + +#define D(x) +#define BUG() (gen_BUG(dc, __FILE__, __LINE__)) +#define BUG_ON(x) ({if (x) BUG();}) + +#define DISAS_SWI 5 + +/* Used by the decoder. */ +#define EXTRACT_FIELD(src, start, end) \ + (((src) >> start) & ((1 << (end - start + 1)) - 1)) + +#define CC_MASK_NZ 0xc +#define CC_MASK_NZV 0xe +#define CC_MASK_NZVC 0xf +#define CC_MASK_RNZV 0x10e + +static TCGv_env cpu_env; +static TCGv cpu_R[16]; +static TCGv cpu_PR[16]; +static TCGv cc_x; +static TCGv cc_src; +static TCGv cc_dest; +static TCGv cc_result; +static TCGv cc_op; +static TCGv cc_size; +static TCGv cc_mask; + +static TCGv env_btaken; +static TCGv env_btarget; +static TCGv env_pc; + +#include "exec/gen-icount.h" + +/* This is the state at translation time. */ +typedef struct DisasContext { + CRISCPU *cpu; + target_ulong pc, ppc; + + /* Decoder. */ + unsigned int (*decoder)(CPUCRISState *env, struct DisasContext *dc); + uint32_t ir; + uint32_t opcode; + unsigned int op1; + unsigned int op2; + unsigned int zsize, zzsize; + unsigned int mode; + unsigned int postinc; + + unsigned int size; + unsigned int src; + unsigned int dst; + unsigned int cond; + + int update_cc; + int cc_op; + int cc_size; + uint32_t cc_mask; + + int cc_size_uptodate; /* -1 invalid or last written value. */ + + int cc_x_uptodate; /* 1 - ccs, 2 - known | X_FLAG. 0 not up-to-date. */ + int flags_uptodate; /* Whether or not $ccs is up-to-date. */ + int flagx_known; /* Whether or not flags_x has the x flag known at + translation time. */ + int flags_x; + + int clear_x; /* Clear x after this insn? */ + int clear_prefix; /* Clear prefix after this insn? */ + int clear_locked_irq; /* Clear the irq lockout. */ + int cpustate_changed; + unsigned int tb_flags; /* tb dependent flags. */ + int is_jmp; + +#define JMP_NOJMP 0 +#define JMP_DIRECT 1 +#define JMP_DIRECT_CC 2 +#define JMP_INDIRECT 3 + int jmp; /* 0=nojmp, 1=direct, 2=indirect. */ + uint32_t jmp_pc; + + int delayed_branch; + + struct TranslationBlock *tb; + int singlestep_enabled; +} DisasContext; + +static void gen_BUG(DisasContext *dc, const char *file, int line) +{ + fprintf(stderr, "BUG: pc=%x %s %d\n", dc->pc, file, line); + if (qemu_log_separate()) { + qemu_log("BUG: pc=%x %s %d\n", dc->pc, file, line); + } + cpu_abort(CPU(dc->cpu), "%s:%d\n", file, line); +} + +static const char *regnames_v32[] = +{ + "$r0", "$r1", "$r2", "$r3", + "$r4", "$r5", "$r6", "$r7", + "$r8", "$r9", "$r10", "$r11", + "$r12", "$r13", "$sp", "$acr", +}; +static const char *pregnames_v32[] = +{ + "$bz", "$vr", "$pid", "$srs", + "$wz", "$exs", "$eda", "$mof", + "$dz", "$ebp", "$erp", "$srp", + "$nrp", "$ccs", "$usp", "$spc", +}; + +/* We need this table to handle preg-moves with implicit width. */ +static int preg_sizes[] = { + 1, /* bz. */ + 1, /* vr. */ + 4, /* pid. */ + 1, /* srs. */ + 2, /* wz. */ + 4, 4, 4, + 4, 4, 4, 4, + 4, 4, 4, 4, +}; + +#define t_gen_mov_TN_env(tn, member) \ + tcg_gen_ld_tl(tn, cpu_env, offsetof(CPUCRISState, member)) +#define t_gen_mov_env_TN(member, tn) \ + tcg_gen_st_tl(tn, cpu_env, offsetof(CPUCRISState, member)) + +static inline void t_gen_mov_TN_preg(TCGv tn, int r) +{ + assert(r >= 0 && r <= 15); + if (r == PR_BZ || r == PR_WZ || r == PR_DZ) { + tcg_gen_mov_tl(tn, tcg_const_tl(0)); + } else if (r == PR_VR) { + tcg_gen_mov_tl(tn, tcg_const_tl(32)); + } else { + tcg_gen_mov_tl(tn, cpu_PR[r]); + } +} +static inline void t_gen_mov_preg_TN(DisasContext *dc, int r, TCGv tn) +{ + assert(r >= 0 && r <= 15); + if (r == PR_BZ || r == PR_WZ || r == PR_DZ) { + return; + } else if (r == PR_SRS) { + tcg_gen_andi_tl(cpu_PR[r], tn, 3); + } else { + if (r == PR_PID) { + gen_helper_tlb_flush_pid(cpu_env, tn); + } + if (dc->tb_flags & S_FLAG && r == PR_SPC) { + gen_helper_spc_write(cpu_env, tn); + } else if (r == PR_CCS) { + dc->cpustate_changed = 1; + } + tcg_gen_mov_tl(cpu_PR[r], tn); + } +} + +/* Sign extend at translation time. */ +static int sign_extend(unsigned int val, unsigned int width) +{ + int sval; + + /* LSL. */ + val <<= 31 - width; + sval = val; + /* ASR. */ + sval >>= 31 - width; + return sval; +} + +static int cris_fetch(CPUCRISState *env, DisasContext *dc, uint32_t addr, + unsigned int size, unsigned int sign) +{ + int r; + + switch (size) { + case 4: + { + r = cpu_ldl_code(env, addr); + break; + } + case 2: + { + if (sign) { + r = cpu_ldsw_code(env, addr); + } else { + r = cpu_lduw_code(env, addr); + } + break; + } + case 1: + { + if (sign) { + r = cpu_ldsb_code(env, addr); + } else { + r = cpu_ldub_code(env, addr); + } + break; + } + default: + cpu_abort(CPU(dc->cpu), "Invalid fetch size %d\n", size); + break; + } + return r; +} + +static void cris_lock_irq(DisasContext *dc) +{ + dc->clear_locked_irq = 0; + t_gen_mov_env_TN(locked_irq, tcg_const_tl(1)); +} + +static inline void t_gen_raise_exception(uint32_t index) +{ + TCGv_i32 tmp = tcg_const_i32(index); + gen_helper_raise_exception(cpu_env, tmp); + tcg_temp_free_i32(tmp); +} + +static void t_gen_lsl(TCGv d, TCGv a, TCGv b) +{ + TCGv t0, t_31; + + t0 = tcg_temp_new(); + t_31 = tcg_const_tl(31); + tcg_gen_shl_tl(d, a, b); + + tcg_gen_sub_tl(t0, t_31, b); + tcg_gen_sar_tl(t0, t0, t_31); + tcg_gen_and_tl(t0, t0, d); + tcg_gen_xor_tl(d, d, t0); + tcg_temp_free(t0); + tcg_temp_free(t_31); +} + +static void t_gen_lsr(TCGv d, TCGv a, TCGv b) +{ + TCGv t0, t_31; + + t0 = tcg_temp_new(); + t_31 = tcg_temp_new(); + tcg_gen_shr_tl(d, a, b); + + tcg_gen_movi_tl(t_31, 31); + tcg_gen_sub_tl(t0, t_31, b); + tcg_gen_sar_tl(t0, t0, t_31); + tcg_gen_and_tl(t0, t0, d); + tcg_gen_xor_tl(d, d, t0); + tcg_temp_free(t0); + tcg_temp_free(t_31); +} + +static void t_gen_asr(TCGv d, TCGv a, TCGv b) +{ + TCGv t0, t_31; + + t0 = tcg_temp_new(); + t_31 = tcg_temp_new(); + tcg_gen_sar_tl(d, a, b); + + tcg_gen_movi_tl(t_31, 31); + tcg_gen_sub_tl(t0, t_31, b); + tcg_gen_sar_tl(t0, t0, t_31); + tcg_gen_or_tl(d, d, t0); + tcg_temp_free(t0); + tcg_temp_free(t_31); +} + +static void t_gen_cris_dstep(TCGv d, TCGv a, TCGv b) +{ + TCGv t = tcg_temp_new(); + + /* + * d <<= 1 + * if (d >= s) + * d -= s; + */ + tcg_gen_shli_tl(d, a, 1); + tcg_gen_sub_tl(t, d, b); + tcg_gen_movcond_tl(TCG_COND_GEU, d, d, b, t, d); + tcg_temp_free(t); +} + +static void t_gen_cris_mstep(TCGv d, TCGv a, TCGv b, TCGv ccs) +{ + TCGv t; + + /* + * d <<= 1 + * if (n) + * d += s; + */ + t = tcg_temp_new(); + tcg_gen_shli_tl(d, a, 1); + tcg_gen_shli_tl(t, ccs, 31 - 3); + tcg_gen_sari_tl(t, t, 31); + tcg_gen_and_tl(t, t, b); + tcg_gen_add_tl(d, d, t); + tcg_temp_free(t); +} + +/* Extended arithmetics on CRIS. */ +static inline void t_gen_add_flag(TCGv d, int flag) +{ + TCGv c; + + c = tcg_temp_new(); + t_gen_mov_TN_preg(c, PR_CCS); + /* Propagate carry into d. */ + tcg_gen_andi_tl(c, c, 1 << flag); + if (flag) { + tcg_gen_shri_tl(c, c, flag); + } + tcg_gen_add_tl(d, d, c); + tcg_temp_free(c); +} + +static inline void t_gen_addx_carry(DisasContext *dc, TCGv d) +{ + if (dc->flagx_known) { + if (dc->flags_x) { + TCGv c; + + c = tcg_temp_new(); + t_gen_mov_TN_preg(c, PR_CCS); + /* C flag is already at bit 0. */ + tcg_gen_andi_tl(c, c, C_FLAG); + tcg_gen_add_tl(d, d, c); + tcg_temp_free(c); + } + } else { + TCGv x, c; + + x = tcg_temp_new(); + c = tcg_temp_new(); + t_gen_mov_TN_preg(x, PR_CCS); + tcg_gen_mov_tl(c, x); + + /* Propagate carry into d if X is set. Branch free. */ + tcg_gen_andi_tl(c, c, C_FLAG); + tcg_gen_andi_tl(x, x, X_FLAG); + tcg_gen_shri_tl(x, x, 4); + + tcg_gen_and_tl(x, x, c); + tcg_gen_add_tl(d, d, x); + tcg_temp_free(x); + tcg_temp_free(c); + } +} + +static inline void t_gen_subx_carry(DisasContext *dc, TCGv d) +{ + if (dc->flagx_known) { + if (dc->flags_x) { + TCGv c; + + c = tcg_temp_new(); + t_gen_mov_TN_preg(c, PR_CCS); + /* C flag is already at bit 0. */ + tcg_gen_andi_tl(c, c, C_FLAG); + tcg_gen_sub_tl(d, d, c); + tcg_temp_free(c); + } + } else { + TCGv x, c; + + x = tcg_temp_new(); + c = tcg_temp_new(); + t_gen_mov_TN_preg(x, PR_CCS); + tcg_gen_mov_tl(c, x); + + /* Propagate carry into d if X is set. Branch free. */ + tcg_gen_andi_tl(c, c, C_FLAG); + tcg_gen_andi_tl(x, x, X_FLAG); + tcg_gen_shri_tl(x, x, 4); + + tcg_gen_and_tl(x, x, c); + tcg_gen_sub_tl(d, d, x); + tcg_temp_free(x); + tcg_temp_free(c); + } +} + +/* Swap the two bytes within each half word of the s operand. + T0 = ((T0 << 8) & 0xff00ff00) | ((T0 >> 8) & 0x00ff00ff) */ +static inline void t_gen_swapb(TCGv d, TCGv s) +{ + TCGv t, org_s; + + t = tcg_temp_new(); + org_s = tcg_temp_new(); + + /* d and s may refer to the same object. */ + tcg_gen_mov_tl(org_s, s); + tcg_gen_shli_tl(t, org_s, 8); + tcg_gen_andi_tl(d, t, 0xff00ff00); + tcg_gen_shri_tl(t, org_s, 8); + tcg_gen_andi_tl(t, t, 0x00ff00ff); + tcg_gen_or_tl(d, d, t); + tcg_temp_free(t); + tcg_temp_free(org_s); +} + +/* Swap the halfwords of the s operand. */ +static inline void t_gen_swapw(TCGv d, TCGv s) +{ + TCGv t; + /* d and s refer the same object. */ + t = tcg_temp_new(); + tcg_gen_mov_tl(t, s); + tcg_gen_shli_tl(d, t, 16); + tcg_gen_shri_tl(t, t, 16); + tcg_gen_or_tl(d, d, t); + tcg_temp_free(t); +} + +/* Reverse the within each byte. + T0 = (((T0 << 7) & 0x80808080) | + ((T0 << 5) & 0x40404040) | + ((T0 << 3) & 0x20202020) | + ((T0 << 1) & 0x10101010) | + ((T0 >> 1) & 0x08080808) | + ((T0 >> 3) & 0x04040404) | + ((T0 >> 5) & 0x02020202) | + ((T0 >> 7) & 0x01010101)); + */ +static inline void t_gen_swapr(TCGv d, TCGv s) +{ + struct { + int shift; /* LSL when positive, LSR when negative. */ + uint32_t mask; + } bitrev[] = { + {7, 0x80808080}, + {5, 0x40404040}, + {3, 0x20202020}, + {1, 0x10101010}, + {-1, 0x08080808}, + {-3, 0x04040404}, + {-5, 0x02020202}, + {-7, 0x01010101} + }; + int i; + TCGv t, org_s; + + /* d and s refer the same object. */ + t = tcg_temp_new(); + org_s = tcg_temp_new(); + tcg_gen_mov_tl(org_s, s); + + tcg_gen_shli_tl(t, org_s, bitrev[0].shift); + tcg_gen_andi_tl(d, t, bitrev[0].mask); + for (i = 1; i < ARRAY_SIZE(bitrev); i++) { + if (bitrev[i].shift >= 0) { + tcg_gen_shli_tl(t, org_s, bitrev[i].shift); + } else { + tcg_gen_shri_tl(t, org_s, -bitrev[i].shift); + } + tcg_gen_andi_tl(t, t, bitrev[i].mask); + tcg_gen_or_tl(d, d, t); + } + tcg_temp_free(t); + tcg_temp_free(org_s); +} + +static void t_gen_cc_jmp(TCGv pc_true, TCGv pc_false) +{ + TCGLabel *l1 = gen_new_label(); + + /* Conditional jmp. */ + tcg_gen_mov_tl(env_pc, pc_false); + tcg_gen_brcondi_tl(TCG_COND_EQ, env_btaken, 0, l1); + tcg_gen_mov_tl(env_pc, pc_true); + gen_set_label(l1); +} + +static inline bool use_goto_tb(DisasContext *dc, target_ulong dest) +{ +#ifndef CONFIG_USER_ONLY + return (dc->tb->pc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK) || + (dc->ppc & TARGET_PAGE_MASK) == (dest & TARGET_PAGE_MASK); +#else + return true; +#endif +} + +static void gen_goto_tb(DisasContext *dc, int n, target_ulong dest) +{ + if (use_goto_tb(dc, dest)) { + tcg_gen_goto_tb(n); + tcg_gen_movi_tl(env_pc, dest); + tcg_gen_exit_tb((uintptr_t)dc->tb + n); + } else { + tcg_gen_movi_tl(env_pc, dest); + tcg_gen_exit_tb(0); + } +} + +static inline void cris_clear_x_flag(DisasContext *dc) +{ + if (dc->flagx_known && dc->flags_x) { + dc->flags_uptodate = 0; + } + + dc->flagx_known = 1; + dc->flags_x = 0; +} + +static void cris_flush_cc_state(DisasContext *dc) +{ + if (dc->cc_size_uptodate != dc->cc_size) { + tcg_gen_movi_tl(cc_size, dc->cc_size); + dc->cc_size_uptodate = dc->cc_size; + } + tcg_gen_movi_tl(cc_op, dc->cc_op); + tcg_gen_movi_tl(cc_mask, dc->cc_mask); +} + +static void cris_evaluate_flags(DisasContext *dc) +{ + if (dc->flags_uptodate) { + return; + } + + cris_flush_cc_state(dc); + + switch (dc->cc_op) { + case CC_OP_MCP: + gen_helper_evaluate_flags_mcp(cpu_PR[PR_CCS], cpu_env, + cpu_PR[PR_CCS], cc_src, + cc_dest, cc_result); + break; + case CC_OP_MULS: + gen_helper_evaluate_flags_muls(cpu_PR[PR_CCS], cpu_env, + cpu_PR[PR_CCS], cc_result, + cpu_PR[PR_MOF]); + break; + case CC_OP_MULU: + gen_helper_evaluate_flags_mulu(cpu_PR[PR_CCS], cpu_env, + cpu_PR[PR_CCS], cc_result, + cpu_PR[PR_MOF]); + break; + case CC_OP_MOVE: + case CC_OP_AND: + case CC_OP_OR: + case CC_OP_XOR: + case CC_OP_ASR: + case CC_OP_LSR: + case CC_OP_LSL: + switch (dc->cc_size) { + case 4: + gen_helper_evaluate_flags_move_4(cpu_PR[PR_CCS], + cpu_env, cpu_PR[PR_CCS], cc_result); + break; + case 2: + gen_helper_evaluate_flags_move_2(cpu_PR[PR_CCS], + cpu_env, cpu_PR[PR_CCS], cc_result); + break; + default: + gen_helper_evaluate_flags(cpu_env); + break; + } + break; + case CC_OP_FLAGS: + /* live. */ + break; + case CC_OP_SUB: + case CC_OP_CMP: + if (dc->cc_size == 4) { + gen_helper_evaluate_flags_sub_4(cpu_PR[PR_CCS], cpu_env, + cpu_PR[PR_CCS], cc_src, cc_dest, cc_result); + } else { + gen_helper_evaluate_flags(cpu_env); + } + + break; + default: + switch (dc->cc_size) { + case 4: + gen_helper_evaluate_flags_alu_4(cpu_PR[PR_CCS], cpu_env, + cpu_PR[PR_CCS], cc_src, cc_dest, cc_result); + break; + default: + gen_helper_evaluate_flags(cpu_env); + break; + } + break; + } + + if (dc->flagx_known) { + if (dc->flags_x) { + tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], X_FLAG); + } else if (dc->cc_op == CC_OP_FLAGS) { + tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~X_FLAG); + } + } + dc->flags_uptodate = 1; +} + +static void cris_cc_mask(DisasContext *dc, unsigned int mask) +{ + uint32_t ovl; + + if (!mask) { + dc->update_cc = 0; + return; + } + + /* Check if we need to evaluate the condition codes due to + CC overlaying. */ + ovl = (dc->cc_mask ^ mask) & ~mask; + if (ovl) { + /* TODO: optimize this case. It trigs all the time. */ + cris_evaluate_flags(dc); + } + dc->cc_mask = mask; + dc->update_cc = 1; +} + +static void cris_update_cc_op(DisasContext *dc, int op, int size) +{ + dc->cc_op = op; + dc->cc_size = size; + dc->flags_uptodate = 0; +} + +static inline void cris_update_cc_x(DisasContext *dc) +{ + /* Save the x flag state at the time of the cc snapshot. */ + if (dc->flagx_known) { + if (dc->cc_x_uptodate == (2 | dc->flags_x)) { + return; + } + tcg_gen_movi_tl(cc_x, dc->flags_x); + dc->cc_x_uptodate = 2 | dc->flags_x; + } else { + tcg_gen_andi_tl(cc_x, cpu_PR[PR_CCS], X_FLAG); + dc->cc_x_uptodate = 1; + } +} + +/* Update cc prior to executing ALU op. Needs source operands untouched. */ +static void cris_pre_alu_update_cc(DisasContext *dc, int op, + TCGv dst, TCGv src, int size) +{ + if (dc->update_cc) { + cris_update_cc_op(dc, op, size); + tcg_gen_mov_tl(cc_src, src); + + if (op != CC_OP_MOVE + && op != CC_OP_AND + && op != CC_OP_OR + && op != CC_OP_XOR + && op != CC_OP_ASR + && op != CC_OP_LSR + && op != CC_OP_LSL) { + tcg_gen_mov_tl(cc_dest, dst); + } + + cris_update_cc_x(dc); + } +} + +/* Update cc after executing ALU op. needs the result. */ +static inline void cris_update_result(DisasContext *dc, TCGv res) +{ + if (dc->update_cc) { + tcg_gen_mov_tl(cc_result, res); + } +} + +/* Returns one if the write back stage should execute. */ +static void cris_alu_op_exec(DisasContext *dc, int op, + TCGv dst, TCGv a, TCGv b, int size) +{ + /* Emit the ALU insns. */ + switch (op) { + case CC_OP_ADD: + tcg_gen_add_tl(dst, a, b); + /* Extended arithmetics. */ + t_gen_addx_carry(dc, dst); + break; + case CC_OP_ADDC: + tcg_gen_add_tl(dst, a, b); + t_gen_add_flag(dst, 0); /* C_FLAG. */ + break; + case CC_OP_MCP: + tcg_gen_add_tl(dst, a, b); + t_gen_add_flag(dst, 8); /* R_FLAG. */ + break; + case CC_OP_SUB: + tcg_gen_sub_tl(dst, a, b); + /* Extended arithmetics. */ + t_gen_subx_carry(dc, dst); + break; + case CC_OP_MOVE: + tcg_gen_mov_tl(dst, b); + break; + case CC_OP_OR: + tcg_gen_or_tl(dst, a, b); + break; + case CC_OP_AND: + tcg_gen_and_tl(dst, a, b); + break; + case CC_OP_XOR: + tcg_gen_xor_tl(dst, a, b); + break; + case CC_OP_LSL: + t_gen_lsl(dst, a, b); + break; + case CC_OP_LSR: + t_gen_lsr(dst, a, b); + break; + case CC_OP_ASR: + t_gen_asr(dst, a, b); + break; + case CC_OP_NEG: + tcg_gen_neg_tl(dst, b); + /* Extended arithmetics. */ + t_gen_subx_carry(dc, dst); + break; + case CC_OP_LZ: + gen_helper_lz(dst, b); + break; + case CC_OP_MULS: + tcg_gen_muls2_tl(dst, cpu_PR[PR_MOF], a, b); + break; + case CC_OP_MULU: + tcg_gen_mulu2_tl(dst, cpu_PR[PR_MOF], a, b); + break; + case CC_OP_DSTEP: + t_gen_cris_dstep(dst, a, b); + break; + case CC_OP_MSTEP: + t_gen_cris_mstep(dst, a, b, cpu_PR[PR_CCS]); + break; + case CC_OP_BOUND: + tcg_gen_movcond_tl(TCG_COND_LEU, dst, a, b, a, b); + break; + case CC_OP_CMP: + tcg_gen_sub_tl(dst, a, b); + /* Extended arithmetics. */ + t_gen_subx_carry(dc, dst); + break; + default: + qemu_log_mask(LOG_GUEST_ERROR, "illegal ALU op.\n"); + BUG(); + break; + } + + if (size == 1) { + tcg_gen_andi_tl(dst, dst, 0xff); + } else if (size == 2) { + tcg_gen_andi_tl(dst, dst, 0xffff); + } +} + +static void cris_alu(DisasContext *dc, int op, + TCGv d, TCGv op_a, TCGv op_b, int size) +{ + TCGv tmp; + int writeback; + + writeback = 1; + + if (op == CC_OP_CMP) { + tmp = tcg_temp_new(); + writeback = 0; + } else if (size == 4) { + tmp = d; + writeback = 0; + } else { + tmp = tcg_temp_new(); + } + + + cris_pre_alu_update_cc(dc, op, op_a, op_b, size); + cris_alu_op_exec(dc, op, tmp, op_a, op_b, size); + cris_update_result(dc, tmp); + + /* Writeback. */ + if (writeback) { + if (size == 1) { + tcg_gen_andi_tl(d, d, ~0xff); + } else { + tcg_gen_andi_tl(d, d, ~0xffff); + } + tcg_gen_or_tl(d, d, tmp); + } + if (!TCGV_EQUAL(tmp, d)) { + tcg_temp_free(tmp); + } +} + +static int arith_cc(DisasContext *dc) +{ + if (dc->update_cc) { + switch (dc->cc_op) { + case CC_OP_ADDC: return 1; + case CC_OP_ADD: return 1; + case CC_OP_SUB: return 1; + case CC_OP_DSTEP: return 1; + case CC_OP_LSL: return 1; + case CC_OP_LSR: return 1; + case CC_OP_ASR: return 1; + case CC_OP_CMP: return 1; + case CC_OP_NEG: return 1; + case CC_OP_OR: return 1; + case CC_OP_AND: return 1; + case CC_OP_XOR: return 1; + case CC_OP_MULU: return 1; + case CC_OP_MULS: return 1; + default: + return 0; + } + } + return 0; +} + +static void gen_tst_cc (DisasContext *dc, TCGv cc, int cond) +{ + int arith_opt, move_opt; + + /* TODO: optimize more condition codes. */ + + /* + * If the flags are live, we've gotta look into the bits of CCS. + * Otherwise, if we just did an arithmetic operation we try to + * evaluate the condition code faster. + * + * When this function is done, T0 should be non-zero if the condition + * code is true. + */ + arith_opt = arith_cc(dc) && !dc->flags_uptodate; + move_opt = (dc->cc_op == CC_OP_MOVE); + switch (cond) { + case CC_EQ: + if ((arith_opt || move_opt) + && dc->cc_x_uptodate != (2 | X_FLAG)) { + tcg_gen_setcond_tl(TCG_COND_EQ, cc, + cc_result, tcg_const_tl(0)); + } else { + cris_evaluate_flags(dc); + tcg_gen_andi_tl(cc, + cpu_PR[PR_CCS], Z_FLAG); + } + break; + case CC_NE: + if ((arith_opt || move_opt) + && dc->cc_x_uptodate != (2 | X_FLAG)) { + tcg_gen_mov_tl(cc, cc_result); + } else { + cris_evaluate_flags(dc); + tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], + Z_FLAG); + tcg_gen_andi_tl(cc, cc, Z_FLAG); + } + break; + case CC_CS: + cris_evaluate_flags(dc); + tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], C_FLAG); + break; + case CC_CC: + cris_evaluate_flags(dc); + tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], C_FLAG); + tcg_gen_andi_tl(cc, cc, C_FLAG); + break; + case CC_VS: + cris_evaluate_flags(dc); + tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], V_FLAG); + break; + case CC_VC: + cris_evaluate_flags(dc); + tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], + V_FLAG); + tcg_gen_andi_tl(cc, cc, V_FLAG); + break; + case CC_PL: + if (arith_opt || move_opt) { + int bits = 31; + + if (dc->cc_size == 1) { + bits = 7; + } else if (dc->cc_size == 2) { + bits = 15; + } + + tcg_gen_shri_tl(cc, cc_result, bits); + tcg_gen_xori_tl(cc, cc, 1); + } else { + cris_evaluate_flags(dc); + tcg_gen_xori_tl(cc, cpu_PR[PR_CCS], + N_FLAG); + tcg_gen_andi_tl(cc, cc, N_FLAG); + } + break; + case CC_MI: + if (arith_opt || move_opt) { + int bits = 31; + + if (dc->cc_size == 1) { + bits = 7; + } else if (dc->cc_size == 2) { + bits = 15; + } + + tcg_gen_shri_tl(cc, cc_result, bits); + tcg_gen_andi_tl(cc, cc, 1); + } else { + cris_evaluate_flags(dc); + tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], + N_FLAG); + } + break; + case CC_LS: + cris_evaluate_flags(dc); + tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], + C_FLAG | Z_FLAG); + break; + case CC_HI: + cris_evaluate_flags(dc); + { + TCGv tmp; + + tmp = tcg_temp_new(); + tcg_gen_xori_tl(tmp, cpu_PR[PR_CCS], + C_FLAG | Z_FLAG); + /* Overlay the C flag on top of the Z. */ + tcg_gen_shli_tl(cc, tmp, 2); + tcg_gen_and_tl(cc, tmp, cc); + tcg_gen_andi_tl(cc, cc, Z_FLAG); + + tcg_temp_free(tmp); + } + break; + case CC_GE: + cris_evaluate_flags(dc); + /* Overlay the V flag on top of the N. */ + tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2); + tcg_gen_xor_tl(cc, + cpu_PR[PR_CCS], cc); + tcg_gen_andi_tl(cc, cc, N_FLAG); + tcg_gen_xori_tl(cc, cc, N_FLAG); + break; + case CC_LT: + cris_evaluate_flags(dc); + /* Overlay the V flag on top of the N. */ + tcg_gen_shli_tl(cc, cpu_PR[PR_CCS], 2); + tcg_gen_xor_tl(cc, + cpu_PR[PR_CCS], cc); + tcg_gen_andi_tl(cc, cc, N_FLAG); + break; + case CC_GT: + cris_evaluate_flags(dc); + { + TCGv n, z; + + n = tcg_temp_new(); + z = tcg_temp_new(); + + /* To avoid a shift we overlay everything on + the V flag. */ + tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2); + tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1); + /* invert Z. */ + tcg_gen_xori_tl(z, z, 2); + + tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]); + tcg_gen_xori_tl(n, n, 2); + tcg_gen_and_tl(cc, z, n); + tcg_gen_andi_tl(cc, cc, 2); + + tcg_temp_free(n); + tcg_temp_free(z); + } + break; + case CC_LE: + cris_evaluate_flags(dc); + { + TCGv n, z; + + n = tcg_temp_new(); + z = tcg_temp_new(); + + /* To avoid a shift we overlay everything on + the V flag. */ + tcg_gen_shri_tl(n, cpu_PR[PR_CCS], 2); + tcg_gen_shri_tl(z, cpu_PR[PR_CCS], 1); + + tcg_gen_xor_tl(n, n, cpu_PR[PR_CCS]); + tcg_gen_or_tl(cc, z, n); + tcg_gen_andi_tl(cc, cc, 2); + + tcg_temp_free(n); + tcg_temp_free(z); + } + break; + case CC_P: + cris_evaluate_flags(dc); + tcg_gen_andi_tl(cc, cpu_PR[PR_CCS], P_FLAG); + break; + case CC_A: + tcg_gen_movi_tl(cc, 1); + break; + default: + BUG(); + break; + }; +} + +static void cris_store_direct_jmp(DisasContext *dc) +{ + /* Store the direct jmp state into the cpu-state. */ + if (dc->jmp == JMP_DIRECT || dc->jmp == JMP_DIRECT_CC) { + if (dc->jmp == JMP_DIRECT) { + tcg_gen_movi_tl(env_btaken, 1); + } + tcg_gen_movi_tl(env_btarget, dc->jmp_pc); + dc->jmp = JMP_INDIRECT; + } +} + +static void cris_prepare_cc_branch (DisasContext *dc, + int offset, int cond) +{ + /* This helps us re-schedule the micro-code to insns in delay-slots + before the actual jump. */ + dc->delayed_branch = 2; + dc->jmp = JMP_DIRECT_CC; + dc->jmp_pc = dc->pc + offset; + + gen_tst_cc(dc, env_btaken, cond); + tcg_gen_movi_tl(env_btarget, dc->jmp_pc); +} + + +/* jumps, when the dest is in a live reg for example. Direct should be set + when the dest addr is constant to allow tb chaining. */ +static inline void cris_prepare_jmp (DisasContext *dc, unsigned int type) +{ + /* This helps us re-schedule the micro-code to insns in delay-slots + before the actual jump. */ + dc->delayed_branch = 2; + dc->jmp = type; + if (type == JMP_INDIRECT) { + tcg_gen_movi_tl(env_btaken, 1); + } +} + +static void gen_load64(DisasContext *dc, TCGv_i64 dst, TCGv addr) +{ + int mem_index = cpu_mmu_index(&dc->cpu->env, false); + + /* If we get a fault on a delayslot we must keep the jmp state in + the cpu-state to be able to re-execute the jmp. */ + if (dc->delayed_branch == 1) { + cris_store_direct_jmp(dc); + } + + tcg_gen_qemu_ld_i64(dst, addr, mem_index, MO_TEQ); +} + +static void gen_load(DisasContext *dc, TCGv dst, TCGv addr, + unsigned int size, int sign) +{ + int mem_index = cpu_mmu_index(&dc->cpu->env, false); + + /* If we get a fault on a delayslot we must keep the jmp state in + the cpu-state to be able to re-execute the jmp. */ + if (dc->delayed_branch == 1) { + cris_store_direct_jmp(dc); + } + + tcg_gen_qemu_ld_tl(dst, addr, mem_index, + MO_TE + ctz32(size) + (sign ? MO_SIGN : 0)); +} + +static void gen_store (DisasContext *dc, TCGv addr, TCGv val, + unsigned int size) +{ + int mem_index = cpu_mmu_index(&dc->cpu->env, false); + + /* If we get a fault on a delayslot we must keep the jmp state in + the cpu-state to be able to re-execute the jmp. */ + if (dc->delayed_branch == 1) { + cris_store_direct_jmp(dc); + } + + + /* Conditional writes. We only support the kind were X and P are known + at translation time. */ + if (dc->flagx_known && dc->flags_x && (dc->tb_flags & P_FLAG)) { + dc->postinc = 0; + cris_evaluate_flags(dc); + tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], C_FLAG); + return; + } + + tcg_gen_qemu_st_tl(val, addr, mem_index, MO_TE + ctz32(size)); + + if (dc->flagx_known && dc->flags_x) { + cris_evaluate_flags(dc); + tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~C_FLAG); + } +} + +static inline void t_gen_sext(TCGv d, TCGv s, int size) +{ + if (size == 1) { + tcg_gen_ext8s_i32(d, s); + } else if (size == 2) { + tcg_gen_ext16s_i32(d, s); + } else if (!TCGV_EQUAL(d, s)) { + tcg_gen_mov_tl(d, s); + } +} + +static inline void t_gen_zext(TCGv d, TCGv s, int size) +{ + if (size == 1) { + tcg_gen_ext8u_i32(d, s); + } else if (size == 2) { + tcg_gen_ext16u_i32(d, s); + } else if (!TCGV_EQUAL(d, s)) { + tcg_gen_mov_tl(d, s); + } +} + +#if DISAS_CRIS +static char memsize_char(int size) +{ + switch (size) { + case 1: return 'b'; break; + case 2: return 'w'; break; + case 4: return 'd'; break; + default: + return 'x'; + break; + } +} +#endif + +static inline unsigned int memsize_z(DisasContext *dc) +{ + return dc->zsize + 1; +} + +static inline unsigned int memsize_zz(DisasContext *dc) +{ + switch (dc->zzsize) { + case 0: return 1; + case 1: return 2; + default: + return 4; + } +} + +static inline void do_postinc (DisasContext *dc, int size) +{ + if (dc->postinc) { + tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], size); + } +} + +static inline void dec_prep_move_r(DisasContext *dc, int rs, int rd, + int size, int s_ext, TCGv dst) +{ + if (s_ext) { + t_gen_sext(dst, cpu_R[rs], size); + } else { + t_gen_zext(dst, cpu_R[rs], size); + } +} + +/* Prepare T0 and T1 for a register alu operation. + s_ext decides if the operand1 should be sign-extended or zero-extended when + needed. */ +static void dec_prep_alu_r(DisasContext *dc, int rs, int rd, + int size, int s_ext, TCGv dst, TCGv src) +{ + dec_prep_move_r(dc, rs, rd, size, s_ext, src); + + if (s_ext) { + t_gen_sext(dst, cpu_R[rd], size); + } else { + t_gen_zext(dst, cpu_R[rd], size); + } +} + +static int dec_prep_move_m(CPUCRISState *env, DisasContext *dc, + int s_ext, int memsize, TCGv dst) +{ + unsigned int rs; + uint32_t imm; + int is_imm; + int insn_len = 2; + + rs = dc->op1; + is_imm = rs == 15 && dc->postinc; + + /* Load [$rs] onto T1. */ + if (is_imm) { + insn_len = 2 + memsize; + if (memsize == 1) { + insn_len++; + } + + imm = cris_fetch(env, dc, dc->pc + 2, memsize, s_ext); + tcg_gen_movi_tl(dst, imm); + dc->postinc = 0; + } else { + cris_flush_cc_state(dc); + gen_load(dc, dst, cpu_R[rs], memsize, 0); + if (s_ext) { + t_gen_sext(dst, dst, memsize); + } else { + t_gen_zext(dst, dst, memsize); + } + } + return insn_len; +} + +/* Prepare T0 and T1 for a memory + alu operation. + s_ext decides if the operand1 should be sign-extended or zero-extended when + needed. */ +static int dec_prep_alu_m(CPUCRISState *env, DisasContext *dc, + int s_ext, int memsize, TCGv dst, TCGv src) +{ + int insn_len; + + insn_len = dec_prep_move_m(env, dc, s_ext, memsize, src); + tcg_gen_mov_tl(dst, cpu_R[dc->op2]); + return insn_len; +} + +#if DISAS_CRIS +static const char *cc_name(int cc) +{ + static const char *cc_names[16] = { + "cc", "cs", "ne", "eq", "vc", "vs", "pl", "mi", + "ls", "hi", "ge", "lt", "gt", "le", "a", "p" + }; + assert(cc < 16); + return cc_names[cc]; +} +#endif + +/* Start of insn decoders. */ + +static int dec_bccq(CPUCRISState *env, DisasContext *dc) +{ + int32_t offset; + int sign; + uint32_t cond = dc->op2; + + offset = EXTRACT_FIELD(dc->ir, 1, 7); + sign = EXTRACT_FIELD(dc->ir, 0, 0); + + offset *= 2; + offset |= sign << 8; + offset = sign_extend(offset, 8); + + LOG_DIS("b%s %x\n", cc_name(cond), dc->pc + offset); + + /* op2 holds the condition-code. */ + cris_cc_mask(dc, 0); + cris_prepare_cc_branch(dc, offset, cond); + return 2; +} +static int dec_addoq(CPUCRISState *env, DisasContext *dc) +{ + int32_t imm; + + dc->op1 = EXTRACT_FIELD(dc->ir, 0, 7); + imm = sign_extend(dc->op1, 7); + + LOG_DIS("addoq %d, $r%u\n", imm, dc->op2); + cris_cc_mask(dc, 0); + /* Fetch register operand, */ + tcg_gen_addi_tl(cpu_R[R_ACR], cpu_R[dc->op2], imm); + + return 2; +} +static int dec_addq(CPUCRISState *env, DisasContext *dc) +{ + LOG_DIS("addq %u, $r%u\n", dc->op1, dc->op2); + + dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); + + cris_cc_mask(dc, CC_MASK_NZVC); + + cris_alu(dc, CC_OP_ADD, + cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4); + return 2; +} +static int dec_moveq(CPUCRISState *env, DisasContext *dc) +{ + uint32_t imm; + + dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); + imm = sign_extend(dc->op1, 5); + LOG_DIS("moveq %d, $r%u\n", imm, dc->op2); + + tcg_gen_movi_tl(cpu_R[dc->op2], imm); + return 2; +} +static int dec_subq(CPUCRISState *env, DisasContext *dc) +{ + dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); + + LOG_DIS("subq %u, $r%u\n", dc->op1, dc->op2); + + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_SUB, + cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4); + return 2; +} +static int dec_cmpq(CPUCRISState *env, DisasContext *dc) +{ + uint32_t imm; + dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); + imm = sign_extend(dc->op1, 5); + + LOG_DIS("cmpq %d, $r%d\n", imm, dc->op2); + cris_cc_mask(dc, CC_MASK_NZVC); + + cris_alu(dc, CC_OP_CMP, + cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4); + return 2; +} +static int dec_andq(CPUCRISState *env, DisasContext *dc) +{ + uint32_t imm; + dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); + imm = sign_extend(dc->op1, 5); + + LOG_DIS("andq %d, $r%d\n", imm, dc->op2); + cris_cc_mask(dc, CC_MASK_NZ); + + cris_alu(dc, CC_OP_AND, + cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4); + return 2; +} +static int dec_orq(CPUCRISState *env, DisasContext *dc) +{ + uint32_t imm; + dc->op1 = EXTRACT_FIELD(dc->ir, 0, 5); + imm = sign_extend(dc->op1, 5); + LOG_DIS("orq %d, $r%d\n", imm, dc->op2); + cris_cc_mask(dc, CC_MASK_NZ); + + cris_alu(dc, CC_OP_OR, + cpu_R[dc->op2], cpu_R[dc->op2], tcg_const_tl(imm), 4); + return 2; +} +static int dec_btstq(CPUCRISState *env, DisasContext *dc) +{ + dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); + LOG_DIS("btstq %u, $r%d\n", dc->op1, dc->op2); + + cris_cc_mask(dc, CC_MASK_NZ); + cris_evaluate_flags(dc); + gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2], + tcg_const_tl(dc->op1), cpu_PR[PR_CCS]); + cris_alu(dc, CC_OP_MOVE, + cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4); + cris_update_cc_op(dc, CC_OP_FLAGS, 4); + dc->flags_uptodate = 1; + return 2; +} +static int dec_asrq(CPUCRISState *env, DisasContext *dc) +{ + dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); + LOG_DIS("asrq %u, $r%d\n", dc->op1, dc->op2); + cris_cc_mask(dc, CC_MASK_NZ); + + tcg_gen_sari_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1); + cris_alu(dc, CC_OP_MOVE, + cpu_R[dc->op2], + cpu_R[dc->op2], cpu_R[dc->op2], 4); + return 2; +} +static int dec_lslq(CPUCRISState *env, DisasContext *dc) +{ + dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); + LOG_DIS("lslq %u, $r%d\n", dc->op1, dc->op2); + + cris_cc_mask(dc, CC_MASK_NZ); + + tcg_gen_shli_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1); + + cris_alu(dc, CC_OP_MOVE, + cpu_R[dc->op2], + cpu_R[dc->op2], cpu_R[dc->op2], 4); + return 2; +} +static int dec_lsrq(CPUCRISState *env, DisasContext *dc) +{ + dc->op1 = EXTRACT_FIELD(dc->ir, 0, 4); + LOG_DIS("lsrq %u, $r%d\n", dc->op1, dc->op2); + + cris_cc_mask(dc, CC_MASK_NZ); + + tcg_gen_shri_tl(cpu_R[dc->op2], cpu_R[dc->op2], dc->op1); + cris_alu(dc, CC_OP_MOVE, + cpu_R[dc->op2], + cpu_R[dc->op2], cpu_R[dc->op2], 4); + return 2; +} + +static int dec_move_r(CPUCRISState *env, DisasContext *dc) +{ + int size = memsize_zz(dc); + + LOG_DIS("move.%c $r%u, $r%u\n", + memsize_char(size), dc->op1, dc->op2); + + cris_cc_mask(dc, CC_MASK_NZ); + if (size == 4) { + dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, cpu_R[dc->op2]); + cris_cc_mask(dc, CC_MASK_NZ); + cris_update_cc_op(dc, CC_OP_MOVE, 4); + cris_update_cc_x(dc); + cris_update_result(dc, cpu_R[dc->op2]); + } else { + TCGv t0; + + t0 = tcg_temp_new(); + dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0); + cris_alu(dc, CC_OP_MOVE, + cpu_R[dc->op2], + cpu_R[dc->op2], t0, size); + tcg_temp_free(t0); + } + return 2; +} + +static int dec_scc_r(CPUCRISState *env, DisasContext *dc) +{ + int cond = dc->op2; + + LOG_DIS("s%s $r%u\n", + cc_name(cond), dc->op1); + + gen_tst_cc(dc, cpu_R[dc->op1], cond); + tcg_gen_setcondi_tl(TCG_COND_NE, cpu_R[dc->op1], cpu_R[dc->op1], 0); + + cris_cc_mask(dc, 0); + return 2; +} + +static inline void cris_alu_alloc_temps(DisasContext *dc, int size, TCGv *t) +{ + if (size == 4) { + t[0] = cpu_R[dc->op2]; + t[1] = cpu_R[dc->op1]; + } else { + t[0] = tcg_temp_new(); + t[1] = tcg_temp_new(); + } +} + +static inline void cris_alu_free_temps(DisasContext *dc, int size, TCGv *t) +{ + if (size != 4) { + tcg_temp_free(t[0]); + tcg_temp_free(t[1]); + } +} + +static int dec_and_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int size = memsize_zz(dc); + + LOG_DIS("and.%c $r%u, $r%u\n", + memsize_char(size), dc->op1, dc->op2); + + cris_cc_mask(dc, CC_MASK_NZ); + + cris_alu_alloc_temps(dc, size, t); + dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); + cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], size); + cris_alu_free_temps(dc, size, t); + return 2; +} + +static int dec_lz_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t0; + LOG_DIS("lz $r%u, $r%u\n", + dc->op1, dc->op2); + cris_cc_mask(dc, CC_MASK_NZ); + t0 = tcg_temp_new(); + dec_prep_alu_r(dc, dc->op1, dc->op2, 4, 0, cpu_R[dc->op2], t0); + cris_alu(dc, CC_OP_LZ, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); + tcg_temp_free(t0); + return 2; +} + +static int dec_lsl_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int size = memsize_zz(dc); + + LOG_DIS("lsl.%c $r%u, $r%u\n", + memsize_char(size), dc->op1, dc->op2); + + cris_cc_mask(dc, CC_MASK_NZ); + cris_alu_alloc_temps(dc, size, t); + dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); + tcg_gen_andi_tl(t[1], t[1], 63); + cris_alu(dc, CC_OP_LSL, cpu_R[dc->op2], t[0], t[1], size); + cris_alu_alloc_temps(dc, size, t); + return 2; +} + +static int dec_lsr_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int size = memsize_zz(dc); + + LOG_DIS("lsr.%c $r%u, $r%u\n", + memsize_char(size), dc->op1, dc->op2); + + cris_cc_mask(dc, CC_MASK_NZ); + cris_alu_alloc_temps(dc, size, t); + dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); + tcg_gen_andi_tl(t[1], t[1], 63); + cris_alu(dc, CC_OP_LSR, cpu_R[dc->op2], t[0], t[1], size); + cris_alu_free_temps(dc, size, t); + return 2; +} + +static int dec_asr_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int size = memsize_zz(dc); + + LOG_DIS("asr.%c $r%u, $r%u\n", + memsize_char(size), dc->op1, dc->op2); + + cris_cc_mask(dc, CC_MASK_NZ); + cris_alu_alloc_temps(dc, size, t); + dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]); + tcg_gen_andi_tl(t[1], t[1], 63); + cris_alu(dc, CC_OP_ASR, cpu_R[dc->op2], t[0], t[1], size); + cris_alu_free_temps(dc, size, t); + return 2; +} + +static int dec_muls_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int size = memsize_zz(dc); + + LOG_DIS("muls.%c $r%u, $r%u\n", + memsize_char(size), dc->op1, dc->op2); + cris_cc_mask(dc, CC_MASK_NZV); + cris_alu_alloc_temps(dc, size, t); + dec_prep_alu_r(dc, dc->op1, dc->op2, size, 1, t[0], t[1]); + + cris_alu(dc, CC_OP_MULS, cpu_R[dc->op2], t[0], t[1], 4); + cris_alu_free_temps(dc, size, t); + return 2; +} + +static int dec_mulu_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int size = memsize_zz(dc); + + LOG_DIS("mulu.%c $r%u, $r%u\n", + memsize_char(size), dc->op1, dc->op2); + cris_cc_mask(dc, CC_MASK_NZV); + cris_alu_alloc_temps(dc, size, t); + dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); + + cris_alu(dc, CC_OP_MULU, cpu_R[dc->op2], t[0], t[1], 4); + cris_alu_alloc_temps(dc, size, t); + return 2; +} + + +static int dec_dstep_r(CPUCRISState *env, DisasContext *dc) +{ + LOG_DIS("dstep $r%u, $r%u\n", dc->op1, dc->op2); + cris_cc_mask(dc, CC_MASK_NZ); + cris_alu(dc, CC_OP_DSTEP, + cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4); + return 2; +} + +static int dec_xor_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int size = memsize_zz(dc); + LOG_DIS("xor.%c $r%u, $r%u\n", + memsize_char(size), dc->op1, dc->op2); + BUG_ON(size != 4); /* xor is dword. */ + cris_cc_mask(dc, CC_MASK_NZ); + cris_alu_alloc_temps(dc, size, t); + dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); + + cris_alu(dc, CC_OP_XOR, cpu_R[dc->op2], t[0], t[1], 4); + cris_alu_free_temps(dc, size, t); + return 2; +} + +static int dec_bound_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv l0; + int size = memsize_zz(dc); + LOG_DIS("bound.%c $r%u, $r%u\n", + memsize_char(size), dc->op1, dc->op2); + cris_cc_mask(dc, CC_MASK_NZ); + l0 = tcg_temp_local_new(); + dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, l0); + cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], cpu_R[dc->op2], l0, 4); + tcg_temp_free(l0); + return 2; +} + +static int dec_cmp_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int size = memsize_zz(dc); + LOG_DIS("cmp.%c $r%u, $r%u\n", + memsize_char(size), dc->op1, dc->op2); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu_alloc_temps(dc, size, t); + dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); + + cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], t[0], t[1], size); + cris_alu_free_temps(dc, size, t); + return 2; +} + +static int dec_abs_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t0; + + LOG_DIS("abs $r%u, $r%u\n", + dc->op1, dc->op2); + cris_cc_mask(dc, CC_MASK_NZ); + + t0 = tcg_temp_new(); + tcg_gen_sari_tl(t0, cpu_R[dc->op1], 31); + tcg_gen_xor_tl(cpu_R[dc->op2], cpu_R[dc->op1], t0); + tcg_gen_sub_tl(cpu_R[dc->op2], cpu_R[dc->op2], t0); + tcg_temp_free(t0); + + cris_alu(dc, CC_OP_MOVE, + cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op2], 4); + return 2; +} + +static int dec_add_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int size = memsize_zz(dc); + LOG_DIS("add.%c $r%u, $r%u\n", + memsize_char(size), dc->op1, dc->op2); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu_alloc_temps(dc, size, t); + dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); + + cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], t[0], t[1], size); + cris_alu_free_temps(dc, size, t); + return 2; +} + +static int dec_addc_r(CPUCRISState *env, DisasContext *dc) +{ + LOG_DIS("addc $r%u, $r%u\n", + dc->op1, dc->op2); + cris_evaluate_flags(dc); + /* Set for this insn. */ + dc->flagx_known = 1; + dc->flags_x = X_FLAG; + + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_ADDC, + cpu_R[dc->op2], cpu_R[dc->op2], cpu_R[dc->op1], 4); + return 2; +} + +static int dec_mcp_r(CPUCRISState *env, DisasContext *dc) +{ + LOG_DIS("mcp $p%u, $r%u\n", + dc->op2, dc->op1); + cris_evaluate_flags(dc); + cris_cc_mask(dc, CC_MASK_RNZV); + cris_alu(dc, CC_OP_MCP, + cpu_R[dc->op1], cpu_R[dc->op1], cpu_PR[dc->op2], 4); + return 2; +} + +#if DISAS_CRIS +static char * swapmode_name(int mode, char *modename) { + int i = 0; + if (mode & 8) { + modename[i++] = 'n'; + } + if (mode & 4) { + modename[i++] = 'w'; + } + if (mode & 2) { + modename[i++] = 'b'; + } + if (mode & 1) { + modename[i++] = 'r'; + } + modename[i++] = 0; + return modename; +} +#endif + +static int dec_swap_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t0; +#if DISAS_CRIS + char modename[4]; +#endif + LOG_DIS("swap%s $r%u\n", + swapmode_name(dc->op2, modename), dc->op1); + + cris_cc_mask(dc, CC_MASK_NZ); + t0 = tcg_temp_new(); + tcg_gen_mov_tl(t0, cpu_R[dc->op1]); + if (dc->op2 & 8) { + tcg_gen_not_tl(t0, t0); + } + if (dc->op2 & 4) { + t_gen_swapw(t0, t0); + } + if (dc->op2 & 2) { + t_gen_swapb(t0, t0); + } + if (dc->op2 & 1) { + t_gen_swapr(t0, t0); + } + cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op1], cpu_R[dc->op1], t0, 4); + tcg_temp_free(t0); + return 2; +} + +static int dec_or_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int size = memsize_zz(dc); + LOG_DIS("or.%c $r%u, $r%u\n", + memsize_char(size), dc->op1, dc->op2); + cris_cc_mask(dc, CC_MASK_NZ); + cris_alu_alloc_temps(dc, size, t); + dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); + cris_alu(dc, CC_OP_OR, cpu_R[dc->op2], t[0], t[1], size); + cris_alu_free_temps(dc, size, t); + return 2; +} + +static int dec_addi_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t0; + LOG_DIS("addi.%c $r%u, $r%u\n", + memsize_char(memsize_zz(dc)), dc->op2, dc->op1); + cris_cc_mask(dc, 0); + t0 = tcg_temp_new(); + tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize)); + tcg_gen_add_tl(cpu_R[dc->op1], cpu_R[dc->op1], t0); + tcg_temp_free(t0); + return 2; +} + +static int dec_addi_acr(CPUCRISState *env, DisasContext *dc) +{ + TCGv t0; + LOG_DIS("addi.%c $r%u, $r%u, $acr\n", + memsize_char(memsize_zz(dc)), dc->op2, dc->op1); + cris_cc_mask(dc, 0); + t0 = tcg_temp_new(); + tcg_gen_shl_tl(t0, cpu_R[dc->op2], tcg_const_tl(dc->zzsize)); + tcg_gen_add_tl(cpu_R[R_ACR], cpu_R[dc->op1], t0); + tcg_temp_free(t0); + return 2; +} + +static int dec_neg_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int size = memsize_zz(dc); + LOG_DIS("neg.%c $r%u, $r%u\n", + memsize_char(size), dc->op1, dc->op2); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu_alloc_temps(dc, size, t); + dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); + + cris_alu(dc, CC_OP_NEG, cpu_R[dc->op2], t[0], t[1], size); + cris_alu_free_temps(dc, size, t); + return 2; +} + +static int dec_btst_r(CPUCRISState *env, DisasContext *dc) +{ + LOG_DIS("btst $r%u, $r%u\n", + dc->op1, dc->op2); + cris_cc_mask(dc, CC_MASK_NZ); + cris_evaluate_flags(dc); + gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->op2], + cpu_R[dc->op1], cpu_PR[PR_CCS]); + cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], + cpu_R[dc->op2], cpu_R[dc->op2], 4); + cris_update_cc_op(dc, CC_OP_FLAGS, 4); + dc->flags_uptodate = 1; + return 2; +} + +static int dec_sub_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int size = memsize_zz(dc); + LOG_DIS("sub.%c $r%u, $r%u\n", + memsize_char(size), dc->op1, dc->op2); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu_alloc_temps(dc, size, t); + dec_prep_alu_r(dc, dc->op1, dc->op2, size, 0, t[0], t[1]); + cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], size); + cris_alu_free_temps(dc, size, t); + return 2; +} + +/* Zero extension. From size to dword. */ +static int dec_movu_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t0; + int size = memsize_z(dc); + LOG_DIS("movu.%c $r%u, $r%u\n", + memsize_char(size), + dc->op1, dc->op2); + + cris_cc_mask(dc, CC_MASK_NZ); + t0 = tcg_temp_new(); + dec_prep_move_r(dc, dc->op1, dc->op2, size, 0, t0); + cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); + tcg_temp_free(t0); + return 2; +} + +/* Sign extension. From size to dword. */ +static int dec_movs_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t0; + int size = memsize_z(dc); + LOG_DIS("movs.%c $r%u, $r%u\n", + memsize_char(size), + dc->op1, dc->op2); + + cris_cc_mask(dc, CC_MASK_NZ); + t0 = tcg_temp_new(); + /* Size can only be qi or hi. */ + t_gen_sext(t0, cpu_R[dc->op1], size); + cris_alu(dc, CC_OP_MOVE, + cpu_R[dc->op2], cpu_R[dc->op1], t0, 4); + tcg_temp_free(t0); + return 2; +} + +/* zero extension. From size to dword. */ +static int dec_addu_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t0; + int size = memsize_z(dc); + LOG_DIS("addu.%c $r%u, $r%u\n", + memsize_char(size), + dc->op1, dc->op2); + + cris_cc_mask(dc, CC_MASK_NZVC); + t0 = tcg_temp_new(); + /* Size can only be qi or hi. */ + t_gen_zext(t0, cpu_R[dc->op1], size); + cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); + tcg_temp_free(t0); + return 2; +} + +/* Sign extension. From size to dword. */ +static int dec_adds_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t0; + int size = memsize_z(dc); + LOG_DIS("adds.%c $r%u, $r%u\n", + memsize_char(size), + dc->op1, dc->op2); + + cris_cc_mask(dc, CC_MASK_NZVC); + t0 = tcg_temp_new(); + /* Size can only be qi or hi. */ + t_gen_sext(t0, cpu_R[dc->op1], size); + cris_alu(dc, CC_OP_ADD, + cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); + tcg_temp_free(t0); + return 2; +} + +/* Zero extension. From size to dword. */ +static int dec_subu_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t0; + int size = memsize_z(dc); + LOG_DIS("subu.%c $r%u, $r%u\n", + memsize_char(size), + dc->op1, dc->op2); + + cris_cc_mask(dc, CC_MASK_NZVC); + t0 = tcg_temp_new(); + /* Size can only be qi or hi. */ + t_gen_zext(t0, cpu_R[dc->op1], size); + cris_alu(dc, CC_OP_SUB, + cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); + tcg_temp_free(t0); + return 2; +} + +/* Sign extension. From size to dword. */ +static int dec_subs_r(CPUCRISState *env, DisasContext *dc) +{ + TCGv t0; + int size = memsize_z(dc); + LOG_DIS("subs.%c $r%u, $r%u\n", + memsize_char(size), + dc->op1, dc->op2); + + cris_cc_mask(dc, CC_MASK_NZVC); + t0 = tcg_temp_new(); + /* Size can only be qi or hi. */ + t_gen_sext(t0, cpu_R[dc->op1], size); + cris_alu(dc, CC_OP_SUB, + cpu_R[dc->op2], cpu_R[dc->op2], t0, 4); + tcg_temp_free(t0); + return 2; +} + +static int dec_setclrf(CPUCRISState *env, DisasContext *dc) +{ + uint32_t flags; + int set = (~dc->opcode >> 2) & 1; + + + flags = (EXTRACT_FIELD(dc->ir, 12, 15) << 4) + | EXTRACT_FIELD(dc->ir, 0, 3); + if (set && flags == 0) { + LOG_DIS("nop\n"); + return 2; + } else if (!set && (flags & 0x20)) { + LOG_DIS("di\n"); + } else { + LOG_DIS("%sf %x\n", set ? "set" : "clr", flags); + } + + /* User space is not allowed to touch these. Silently ignore. */ + if (dc->tb_flags & U_FLAG) { + flags &= ~(S_FLAG | I_FLAG | U_FLAG); + } + + if (flags & X_FLAG) { + dc->flagx_known = 1; + if (set) { + dc->flags_x = X_FLAG; + } else { + dc->flags_x = 0; + } + } + + /* Break the TB if any of the SPI flag changes. */ + if (flags & (P_FLAG | S_FLAG)) { + tcg_gen_movi_tl(env_pc, dc->pc + 2); + dc->is_jmp = DISAS_UPDATE; + dc->cpustate_changed = 1; + } + + /* For the I flag, only act on posedge. */ + if ((flags & I_FLAG)) { + tcg_gen_movi_tl(env_pc, dc->pc + 2); + dc->is_jmp = DISAS_UPDATE; + dc->cpustate_changed = 1; + } + + + /* Simply decode the flags. */ + cris_evaluate_flags(dc); + cris_update_cc_op(dc, CC_OP_FLAGS, 4); + cris_update_cc_x(dc); + tcg_gen_movi_tl(cc_op, dc->cc_op); + + if (set) { + if (!(dc->tb_flags & U_FLAG) && (flags & U_FLAG)) { + /* Enter user mode. */ + t_gen_mov_env_TN(ksp, cpu_R[R_SP]); + tcg_gen_mov_tl(cpu_R[R_SP], cpu_PR[PR_USP]); + dc->cpustate_changed = 1; + } + tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags); + } else { + tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~flags); + } + + dc->flags_uptodate = 1; + dc->clear_x = 0; + return 2; +} + +static int dec_move_rs(CPUCRISState *env, DisasContext *dc) +{ + LOG_DIS("move $r%u, $s%u\n", dc->op1, dc->op2); + cris_cc_mask(dc, 0); + gen_helper_movl_sreg_reg(cpu_env, tcg_const_tl(dc->op2), + tcg_const_tl(dc->op1)); + return 2; +} +static int dec_move_sr(CPUCRISState *env, DisasContext *dc) +{ + LOG_DIS("move $s%u, $r%u\n", dc->op2, dc->op1); + cris_cc_mask(dc, 0); + gen_helper_movl_reg_sreg(cpu_env, tcg_const_tl(dc->op1), + tcg_const_tl(dc->op2)); + return 2; +} + +static int dec_move_rp(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + LOG_DIS("move $r%u, $p%u\n", dc->op1, dc->op2); + cris_cc_mask(dc, 0); + + t[0] = tcg_temp_new(); + if (dc->op2 == PR_CCS) { + cris_evaluate_flags(dc); + tcg_gen_mov_tl(t[0], cpu_R[dc->op1]); + if (dc->tb_flags & U_FLAG) { + t[1] = tcg_temp_new(); + /* User space is not allowed to touch all flags. */ + tcg_gen_andi_tl(t[0], t[0], 0x39f); + tcg_gen_andi_tl(t[1], cpu_PR[PR_CCS], ~0x39f); + tcg_gen_or_tl(t[0], t[1], t[0]); + tcg_temp_free(t[1]); + } + } else { + tcg_gen_mov_tl(t[0], cpu_R[dc->op1]); + } + + t_gen_mov_preg_TN(dc, dc->op2, t[0]); + if (dc->op2 == PR_CCS) { + cris_update_cc_op(dc, CC_OP_FLAGS, 4); + dc->flags_uptodate = 1; + } + tcg_temp_free(t[0]); + return 2; +} +static int dec_move_pr(CPUCRISState *env, DisasContext *dc) +{ + TCGv t0; + LOG_DIS("move $p%u, $r%u\n", dc->op2, dc->op1); + cris_cc_mask(dc, 0); + + if (dc->op2 == PR_CCS) { + cris_evaluate_flags(dc); + } + + if (dc->op2 == PR_DZ) { + tcg_gen_movi_tl(cpu_R[dc->op1], 0); + } else { + t0 = tcg_temp_new(); + t_gen_mov_TN_preg(t0, dc->op2); + cris_alu(dc, CC_OP_MOVE, + cpu_R[dc->op1], cpu_R[dc->op1], t0, + preg_sizes[dc->op2]); + tcg_temp_free(t0); + } + return 2; +} + +static int dec_move_mr(CPUCRISState *env, DisasContext *dc) +{ + int memsize = memsize_zz(dc); + int insn_len; + LOG_DIS("move.%c [$r%u%s, $r%u\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + if (memsize == 4) { + insn_len = dec_prep_move_m(env, dc, 0, 4, cpu_R[dc->op2]); + cris_cc_mask(dc, CC_MASK_NZ); + cris_update_cc_op(dc, CC_OP_MOVE, 4); + cris_update_cc_x(dc); + cris_update_result(dc, cpu_R[dc->op2]); + } else { + TCGv t0; + + t0 = tcg_temp_new(); + insn_len = dec_prep_move_m(env, dc, 0, memsize, t0); + cris_cc_mask(dc, CC_MASK_NZ); + cris_alu(dc, CC_OP_MOVE, + cpu_R[dc->op2], cpu_R[dc->op2], t0, memsize); + tcg_temp_free(t0); + } + do_postinc(dc, memsize); + return insn_len; +} + +static inline void cris_alu_m_alloc_temps(TCGv *t) +{ + t[0] = tcg_temp_new(); + t[1] = tcg_temp_new(); +} + +static inline void cris_alu_m_free_temps(TCGv *t) +{ + tcg_temp_free(t[0]); + tcg_temp_free(t[1]); +} + +static int dec_movs_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_z(dc); + int insn_len; + LOG_DIS("movs.%c [$r%u%s, $r%u\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + cris_alu_m_alloc_temps(t); + /* sign extend. */ + insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]); + cris_cc_mask(dc, CC_MASK_NZ); + cris_alu(dc, CC_OP_MOVE, + cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_addu_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_z(dc); + int insn_len; + LOG_DIS("addu.%c [$r%u%s, $r%u\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + cris_alu_m_alloc_temps(t); + /* sign extend. */ + insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_ADD, + cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_adds_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_z(dc); + int insn_len; + LOG_DIS("adds.%c [$r%u%s, $r%u\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + cris_alu_m_alloc_temps(t); + /* sign extend. */ + insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_ADD, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_subu_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_z(dc); + int insn_len; + LOG_DIS("subu.%c [$r%u%s, $r%u\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + cris_alu_m_alloc_temps(t); + /* sign extend. */ + insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_subs_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_z(dc); + int insn_len; + LOG_DIS("subs.%c [$r%u%s, $r%u\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + cris_alu_m_alloc_temps(t); + /* sign extend. */ + insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_movu_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_z(dc); + int insn_len; + + LOG_DIS("movu.%c [$r%u%s, $r%u\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + cris_alu_m_alloc_temps(t); + insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); + cris_cc_mask(dc, CC_MASK_NZ); + cris_alu(dc, CC_OP_MOVE, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_cmpu_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_z(dc); + int insn_len; + LOG_DIS("cmpu.%c [$r%u%s, $r%u\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + cris_alu_m_alloc_temps(t); + insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_CMP, cpu_R[dc->op2], cpu_R[dc->op2], t[1], 4); + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_cmps_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_z(dc); + int insn_len; + LOG_DIS("cmps.%c [$r%u%s, $r%u\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + cris_alu_m_alloc_temps(t); + insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_CMP, + cpu_R[dc->op2], cpu_R[dc->op2], t[1], + memsize_zz(dc)); + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_cmp_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_zz(dc); + int insn_len; + LOG_DIS("cmp.%c [$r%u%s, $r%u\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + cris_alu_m_alloc_temps(t); + insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_CMP, + cpu_R[dc->op2], cpu_R[dc->op2], t[1], + memsize_zz(dc)); + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_test_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_zz(dc); + int insn_len; + LOG_DIS("test.%c [$r%u%s] op2=%x\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + cris_evaluate_flags(dc); + + cris_alu_m_alloc_temps(t); + insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); + cris_cc_mask(dc, CC_MASK_NZ); + tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3); + + cris_alu(dc, CC_OP_CMP, + cpu_R[dc->op2], t[1], tcg_const_tl(0), memsize_zz(dc)); + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_and_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_zz(dc); + int insn_len; + LOG_DIS("and.%c [$r%u%s, $r%u\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + cris_alu_m_alloc_temps(t); + insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); + cris_cc_mask(dc, CC_MASK_NZ); + cris_alu(dc, CC_OP_AND, cpu_R[dc->op2], t[0], t[1], memsize_zz(dc)); + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_add_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_zz(dc); + int insn_len; + LOG_DIS("add.%c [$r%u%s, $r%u\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + cris_alu_m_alloc_temps(t); + insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_ADD, + cpu_R[dc->op2], t[0], t[1], memsize_zz(dc)); + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_addo_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_zz(dc); + int insn_len; + LOG_DIS("add.%c [$r%u%s, $r%u\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + cris_alu_m_alloc_temps(t); + insn_len = dec_prep_alu_m(env, dc, 1, memsize, t[0], t[1]); + cris_cc_mask(dc, 0); + cris_alu(dc, CC_OP_ADD, cpu_R[R_ACR], t[0], t[1], 4); + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_bound_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv l[2]; + int memsize = memsize_zz(dc); + int insn_len; + LOG_DIS("bound.%c [$r%u%s, $r%u\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + l[0] = tcg_temp_local_new(); + l[1] = tcg_temp_local_new(); + insn_len = dec_prep_alu_m(env, dc, 0, memsize, l[0], l[1]); + cris_cc_mask(dc, CC_MASK_NZ); + cris_alu(dc, CC_OP_BOUND, cpu_R[dc->op2], l[0], l[1], 4); + do_postinc(dc, memsize); + tcg_temp_free(l[0]); + tcg_temp_free(l[1]); + return insn_len; +} + +static int dec_addc_mr(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int insn_len = 2; + LOG_DIS("addc [$r%u%s, $r%u\n", + dc->op1, dc->postinc ? "+]" : "]", + dc->op2); + + cris_evaluate_flags(dc); + + /* Set for this insn. */ + dc->flagx_known = 1; + dc->flags_x = X_FLAG; + + cris_alu_m_alloc_temps(t); + insn_len = dec_prep_alu_m(env, dc, 0, 4, t[0], t[1]); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_ADDC, cpu_R[dc->op2], t[0], t[1], 4); + do_postinc(dc, 4); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_sub_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_zz(dc); + int insn_len; + LOG_DIS("sub.%c [$r%u%s, $r%u ir=%x zz=%x\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2, dc->ir, dc->zzsize); + + cris_alu_m_alloc_temps(t); + insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_SUB, cpu_R[dc->op2], t[0], t[1], memsize); + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_or_m(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_zz(dc); + int insn_len; + LOG_DIS("or.%c [$r%u%s, $r%u pc=%x\n", + memsize_char(memsize), + dc->op1, dc->postinc ? "+]" : "]", + dc->op2, dc->pc); + + cris_alu_m_alloc_temps(t); + insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); + cris_cc_mask(dc, CC_MASK_NZ); + cris_alu(dc, CC_OP_OR, + cpu_R[dc->op2], t[0], t[1], memsize_zz(dc)); + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_move_mp(CPUCRISState *env, DisasContext *dc) +{ + TCGv t[2]; + int memsize = memsize_zz(dc); + int insn_len = 2; + + LOG_DIS("move.%c [$r%u%s, $p%u\n", + memsize_char(memsize), + dc->op1, + dc->postinc ? "+]" : "]", + dc->op2); + + cris_alu_m_alloc_temps(t); + insn_len = dec_prep_alu_m(env, dc, 0, memsize, t[0], t[1]); + cris_cc_mask(dc, 0); + if (dc->op2 == PR_CCS) { + cris_evaluate_flags(dc); + if (dc->tb_flags & U_FLAG) { + /* User space is not allowed to touch all flags. */ + tcg_gen_andi_tl(t[1], t[1], 0x39f); + tcg_gen_andi_tl(t[0], cpu_PR[PR_CCS], ~0x39f); + tcg_gen_or_tl(t[1], t[0], t[1]); + } + } + + t_gen_mov_preg_TN(dc, dc->op2, t[1]); + + do_postinc(dc, memsize); + cris_alu_m_free_temps(t); + return insn_len; +} + +static int dec_move_pm(CPUCRISState *env, DisasContext *dc) +{ + TCGv t0; + int memsize; + + memsize = preg_sizes[dc->op2]; + + LOG_DIS("move.%c $p%u, [$r%u%s\n", + memsize_char(memsize), + dc->op2, dc->op1, dc->postinc ? "+]" : "]"); + + /* prepare store. Address in T0, value in T1. */ + if (dc->op2 == PR_CCS) { + cris_evaluate_flags(dc); + } + t0 = tcg_temp_new(); + t_gen_mov_TN_preg(t0, dc->op2); + cris_flush_cc_state(dc); + gen_store(dc, cpu_R[dc->op1], t0, memsize); + tcg_temp_free(t0); + + cris_cc_mask(dc, 0); + if (dc->postinc) { + tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize); + } + return 2; +} + +static int dec_movem_mr(CPUCRISState *env, DisasContext *dc) +{ + TCGv_i64 tmp[16]; + TCGv tmp32; + TCGv addr; + int i; + int nr = dc->op2 + 1; + + LOG_DIS("movem [$r%u%s, $r%u\n", dc->op1, + dc->postinc ? "+]" : "]", dc->op2); + + addr = tcg_temp_new(); + /* There are probably better ways of doing this. */ + cris_flush_cc_state(dc); + for (i = 0; i < (nr >> 1); i++) { + tmp[i] = tcg_temp_new_i64(); + tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8); + gen_load64(dc, tmp[i], addr); + } + if (nr & 1) { + tmp32 = tcg_temp_new_i32(); + tcg_gen_addi_tl(addr, cpu_R[dc->op1], i * 8); + gen_load(dc, tmp32, addr, 4, 0); + } else { + TCGV_UNUSED(tmp32); + } + tcg_temp_free(addr); + + for (i = 0; i < (nr >> 1); i++) { + tcg_gen_extrl_i64_i32(cpu_R[i * 2], tmp[i]); + tcg_gen_shri_i64(tmp[i], tmp[i], 32); + tcg_gen_extrl_i64_i32(cpu_R[i * 2 + 1], tmp[i]); + tcg_temp_free_i64(tmp[i]); + } + if (nr & 1) { + tcg_gen_mov_tl(cpu_R[dc->op2], tmp32); + tcg_temp_free(tmp32); + } + + /* writeback the updated pointer value. */ + if (dc->postinc) { + tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], nr * 4); + } + + /* gen_load might want to evaluate the previous insns flags. */ + cris_cc_mask(dc, 0); + return 2; +} + +static int dec_movem_rm(CPUCRISState *env, DisasContext *dc) +{ + TCGv tmp; + TCGv addr; + int i; + + LOG_DIS("movem $r%u, [$r%u%s\n", dc->op2, dc->op1, + dc->postinc ? "+]" : "]"); + + cris_flush_cc_state(dc); + + tmp = tcg_temp_new(); + addr = tcg_temp_new(); + tcg_gen_movi_tl(tmp, 4); + tcg_gen_mov_tl(addr, cpu_R[dc->op1]); + for (i = 0; i <= dc->op2; i++) { + /* Displace addr. */ + /* Perform the store. */ + gen_store(dc, addr, cpu_R[i], 4); + tcg_gen_add_tl(addr, addr, tmp); + } + if (dc->postinc) { + tcg_gen_mov_tl(cpu_R[dc->op1], addr); + } + cris_cc_mask(dc, 0); + tcg_temp_free(tmp); + tcg_temp_free(addr); + return 2; +} + +static int dec_move_rm(CPUCRISState *env, DisasContext *dc) +{ + int memsize; + + memsize = memsize_zz(dc); + + LOG_DIS("move.%c $r%u, [$r%u]\n", + memsize_char(memsize), dc->op2, dc->op1); + + /* prepare store. */ + cris_flush_cc_state(dc); + gen_store(dc, cpu_R[dc->op1], cpu_R[dc->op2], memsize); + + if (dc->postinc) { + tcg_gen_addi_tl(cpu_R[dc->op1], cpu_R[dc->op1], memsize); + } + cris_cc_mask(dc, 0); + return 2; +} + +static int dec_lapcq(CPUCRISState *env, DisasContext *dc) +{ + LOG_DIS("lapcq %x, $r%u\n", + dc->pc + dc->op1*2, dc->op2); + cris_cc_mask(dc, 0); + tcg_gen_movi_tl(cpu_R[dc->op2], dc->pc + dc->op1 * 2); + return 2; +} + +static int dec_lapc_im(CPUCRISState *env, DisasContext *dc) +{ + unsigned int rd; + int32_t imm; + int32_t pc; + + rd = dc->op2; + + cris_cc_mask(dc, 0); + imm = cris_fetch(env, dc, dc->pc + 2, 4, 0); + LOG_DIS("lapc 0x%x, $r%u\n", imm + dc->pc, dc->op2); + + pc = dc->pc; + pc += imm; + tcg_gen_movi_tl(cpu_R[rd], pc); + return 6; +} + +/* Jump to special reg. */ +static int dec_jump_p(CPUCRISState *env, DisasContext *dc) +{ + LOG_DIS("jump $p%u\n", dc->op2); + + if (dc->op2 == PR_CCS) { + cris_evaluate_flags(dc); + } + t_gen_mov_TN_preg(env_btarget, dc->op2); + /* rete will often have low bit set to indicate delayslot. */ + tcg_gen_andi_tl(env_btarget, env_btarget, ~1); + cris_cc_mask(dc, 0); + cris_prepare_jmp(dc, JMP_INDIRECT); + return 2; +} + +/* Jump and save. */ +static int dec_jas_r(CPUCRISState *env, DisasContext *dc) +{ + LOG_DIS("jas $r%u, $p%u\n", dc->op1, dc->op2); + cris_cc_mask(dc, 0); + /* Store the return address in Pd. */ + tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]); + if (dc->op2 > 15) { + abort(); + } + t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4)); + + cris_prepare_jmp(dc, JMP_INDIRECT); + return 2; +} + +static int dec_jas_im(CPUCRISState *env, DisasContext *dc) +{ + uint32_t imm; + + imm = cris_fetch(env, dc, dc->pc + 2, 4, 0); + + LOG_DIS("jas 0x%x\n", imm); + cris_cc_mask(dc, 0); + /* Store the return address in Pd. */ + t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8)); + + dc->jmp_pc = imm; + cris_prepare_jmp(dc, JMP_DIRECT); + return 6; +} + +static int dec_jasc_im(CPUCRISState *env, DisasContext *dc) +{ + uint32_t imm; + + imm = cris_fetch(env, dc, dc->pc + 2, 4, 0); + + LOG_DIS("jasc 0x%x\n", imm); + cris_cc_mask(dc, 0); + /* Store the return address in Pd. */ + t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8 + 4)); + + dc->jmp_pc = imm; + cris_prepare_jmp(dc, JMP_DIRECT); + return 6; +} + +static int dec_jasc_r(CPUCRISState *env, DisasContext *dc) +{ + LOG_DIS("jasc_r $r%u, $p%u\n", dc->op1, dc->op2); + cris_cc_mask(dc, 0); + /* Store the return address in Pd. */ + tcg_gen_mov_tl(env_btarget, cpu_R[dc->op1]); + t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 4 + 4)); + cris_prepare_jmp(dc, JMP_INDIRECT); + return 2; +} + +static int dec_bcc_im(CPUCRISState *env, DisasContext *dc) +{ + int32_t offset; + uint32_t cond = dc->op2; + + offset = cris_fetch(env, dc, dc->pc + 2, 2, 1); + + LOG_DIS("b%s %d pc=%x dst=%x\n", + cc_name(cond), offset, + dc->pc, dc->pc + offset); + + cris_cc_mask(dc, 0); + /* op2 holds the condition-code. */ + cris_prepare_cc_branch(dc, offset, cond); + return 4; +} + +static int dec_bas_im(CPUCRISState *env, DisasContext *dc) +{ + int32_t simm; + + simm = cris_fetch(env, dc, dc->pc + 2, 4, 0); + + LOG_DIS("bas 0x%x, $p%u\n", dc->pc + simm, dc->op2); + cris_cc_mask(dc, 0); + /* Store the return address in Pd. */ + t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 8)); + + dc->jmp_pc = dc->pc + simm; + cris_prepare_jmp(dc, JMP_DIRECT); + return 6; +} + +static int dec_basc_im(CPUCRISState *env, DisasContext *dc) +{ + int32_t simm; + simm = cris_fetch(env, dc, dc->pc + 2, 4, 0); + + LOG_DIS("basc 0x%x, $p%u\n", dc->pc + simm, dc->op2); + cris_cc_mask(dc, 0); + /* Store the return address in Pd. */ + t_gen_mov_preg_TN(dc, dc->op2, tcg_const_tl(dc->pc + 12)); + + dc->jmp_pc = dc->pc + simm; + cris_prepare_jmp(dc, JMP_DIRECT); + return 6; +} + +static int dec_rfe_etc(CPUCRISState *env, DisasContext *dc) +{ + cris_cc_mask(dc, 0); + + if (dc->op2 == 15) { + tcg_gen_st_i32(tcg_const_i32(1), cpu_env, + -offsetof(CRISCPU, env) + offsetof(CPUState, halted)); + tcg_gen_movi_tl(env_pc, dc->pc + 2); + t_gen_raise_exception(EXCP_HLT); + return 2; + } + + switch (dc->op2 & 7) { + case 2: + /* rfe. */ + LOG_DIS("rfe\n"); + cris_evaluate_flags(dc); + gen_helper_rfe(cpu_env); + dc->is_jmp = DISAS_UPDATE; + break; + case 5: + /* rfn. */ + LOG_DIS("rfn\n"); + cris_evaluate_flags(dc); + gen_helper_rfn(cpu_env); + dc->is_jmp = DISAS_UPDATE; + break; + case 6: + LOG_DIS("break %d\n", dc->op1); + cris_evaluate_flags(dc); + /* break. */ + tcg_gen_movi_tl(env_pc, dc->pc + 2); + + /* Breaks start at 16 in the exception vector. */ + t_gen_mov_env_TN(trap_vector, + tcg_const_tl(dc->op1 + 16)); + t_gen_raise_exception(EXCP_BREAK); + dc->is_jmp = DISAS_UPDATE; + break; + default: + printf("op2=%x\n", dc->op2); + BUG(); + break; + + } + return 2; +} + +static int dec_ftag_fidx_d_m(CPUCRISState *env, DisasContext *dc) +{ + return 2; +} + +static int dec_ftag_fidx_i_m(CPUCRISState *env, DisasContext *dc) +{ + return 2; +} + +static int dec_null(CPUCRISState *env, DisasContext *dc) +{ + printf("unknown insn pc=%x opc=%x op1=%x op2=%x\n", + dc->pc, dc->opcode, dc->op1, dc->op2); + fflush(NULL); + BUG(); + return 2; +} + +static struct decoder_info { + struct { + uint32_t bits; + uint32_t mask; + }; + int (*dec)(CPUCRISState *env, DisasContext *dc); +} decinfo[] = { + /* Order matters here. */ + {DEC_MOVEQ, dec_moveq}, + {DEC_BTSTQ, dec_btstq}, + {DEC_CMPQ, dec_cmpq}, + {DEC_ADDOQ, dec_addoq}, + {DEC_ADDQ, dec_addq}, + {DEC_SUBQ, dec_subq}, + {DEC_ANDQ, dec_andq}, + {DEC_ORQ, dec_orq}, + {DEC_ASRQ, dec_asrq}, + {DEC_LSLQ, dec_lslq}, + {DEC_LSRQ, dec_lsrq}, + {DEC_BCCQ, dec_bccq}, + + {DEC_BCC_IM, dec_bcc_im}, + {DEC_JAS_IM, dec_jas_im}, + {DEC_JAS_R, dec_jas_r}, + {DEC_JASC_IM, dec_jasc_im}, + {DEC_JASC_R, dec_jasc_r}, + {DEC_BAS_IM, dec_bas_im}, + {DEC_BASC_IM, dec_basc_im}, + {DEC_JUMP_P, dec_jump_p}, + {DEC_LAPC_IM, dec_lapc_im}, + {DEC_LAPCQ, dec_lapcq}, + + {DEC_RFE_ETC, dec_rfe_etc}, + {DEC_ADDC_MR, dec_addc_mr}, + + {DEC_MOVE_MP, dec_move_mp}, + {DEC_MOVE_PM, dec_move_pm}, + {DEC_MOVEM_MR, dec_movem_mr}, + {DEC_MOVEM_RM, dec_movem_rm}, + {DEC_MOVE_PR, dec_move_pr}, + {DEC_SCC_R, dec_scc_r}, + {DEC_SETF, dec_setclrf}, + {DEC_CLEARF, dec_setclrf}, + + {DEC_MOVE_SR, dec_move_sr}, + {DEC_MOVE_RP, dec_move_rp}, + {DEC_SWAP_R, dec_swap_r}, + {DEC_ABS_R, dec_abs_r}, + {DEC_LZ_R, dec_lz_r}, + {DEC_MOVE_RS, dec_move_rs}, + {DEC_BTST_R, dec_btst_r}, + {DEC_ADDC_R, dec_addc_r}, + + {DEC_DSTEP_R, dec_dstep_r}, + {DEC_XOR_R, dec_xor_r}, + {DEC_MCP_R, dec_mcp_r}, + {DEC_CMP_R, dec_cmp_r}, + + {DEC_ADDI_R, dec_addi_r}, + {DEC_ADDI_ACR, dec_addi_acr}, + + {DEC_ADD_R, dec_add_r}, + {DEC_SUB_R, dec_sub_r}, + + {DEC_ADDU_R, dec_addu_r}, + {DEC_ADDS_R, dec_adds_r}, + {DEC_SUBU_R, dec_subu_r}, + {DEC_SUBS_R, dec_subs_r}, + {DEC_LSL_R, dec_lsl_r}, + + {DEC_AND_R, dec_and_r}, + {DEC_OR_R, dec_or_r}, + {DEC_BOUND_R, dec_bound_r}, + {DEC_ASR_R, dec_asr_r}, + {DEC_LSR_R, dec_lsr_r}, + + {DEC_MOVU_R, dec_movu_r}, + {DEC_MOVS_R, dec_movs_r}, + {DEC_NEG_R, dec_neg_r}, + {DEC_MOVE_R, dec_move_r}, + + {DEC_FTAG_FIDX_I_M, dec_ftag_fidx_i_m}, + {DEC_FTAG_FIDX_D_M, dec_ftag_fidx_d_m}, + + {DEC_MULS_R, dec_muls_r}, + {DEC_MULU_R, dec_mulu_r}, + + {DEC_ADDU_M, dec_addu_m}, + {DEC_ADDS_M, dec_adds_m}, + {DEC_SUBU_M, dec_subu_m}, + {DEC_SUBS_M, dec_subs_m}, + + {DEC_CMPU_M, dec_cmpu_m}, + {DEC_CMPS_M, dec_cmps_m}, + {DEC_MOVU_M, dec_movu_m}, + {DEC_MOVS_M, dec_movs_m}, + + {DEC_CMP_M, dec_cmp_m}, + {DEC_ADDO_M, dec_addo_m}, + {DEC_BOUND_M, dec_bound_m}, + {DEC_ADD_M, dec_add_m}, + {DEC_SUB_M, dec_sub_m}, + {DEC_AND_M, dec_and_m}, + {DEC_OR_M, dec_or_m}, + {DEC_MOVE_RM, dec_move_rm}, + {DEC_TEST_M, dec_test_m}, + {DEC_MOVE_MR, dec_move_mr}, + + {{0, 0}, dec_null} +}; + +static unsigned int crisv32_decoder(CPUCRISState *env, DisasContext *dc) +{ + int insn_len = 2; + int i; + + /* Load a halfword onto the instruction register. */ + dc->ir = cris_fetch(env, dc, dc->pc, 2, 0); + + /* Now decode it. */ + dc->opcode = EXTRACT_FIELD(dc->ir, 4, 11); + dc->op1 = EXTRACT_FIELD(dc->ir, 0, 3); + dc->op2 = EXTRACT_FIELD(dc->ir, 12, 15); + dc->zsize = EXTRACT_FIELD(dc->ir, 4, 4); + dc->zzsize = EXTRACT_FIELD(dc->ir, 4, 5); + dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10); + + /* Large switch for all insns. */ + for (i = 0; i < ARRAY_SIZE(decinfo); i++) { + if ((dc->opcode & decinfo[i].mask) == decinfo[i].bits) { + insn_len = decinfo[i].dec(env, dc); + break; + } + } + +#if !defined(CONFIG_USER_ONLY) + /* Single-stepping ? */ + if (dc->tb_flags & S_FLAG) { + TCGLabel *l1 = gen_new_label(); + tcg_gen_brcondi_tl(TCG_COND_NE, cpu_PR[PR_SPC], dc->pc, l1); + /* We treat SPC as a break with an odd trap vector. */ + cris_evaluate_flags(dc); + t_gen_mov_env_TN(trap_vector, tcg_const_tl(3)); + tcg_gen_movi_tl(env_pc, dc->pc + insn_len); + tcg_gen_movi_tl(cpu_PR[PR_SPC], dc->pc + insn_len); + t_gen_raise_exception(EXCP_BREAK); + gen_set_label(l1); + } +#endif + return insn_len; +} + +#include "translate_v10.c" + +/* + * Delay slots on QEMU/CRIS. + * + * If an exception hits on a delayslot, the core will let ERP (the Exception + * Return Pointer) point to the branch (the previous) insn and set the lsb to + * to give SW a hint that the exception actually hit on the dslot. + * + * CRIS expects all PC addresses to be 16-bit aligned. The lsb is ignored by + * the core and any jmp to an odd addresses will mask off that lsb. It is + * simply there to let sw know there was an exception on a dslot. + * + * When the software returns from an exception, the branch will re-execute. + * On QEMU care needs to be taken when a branch+delayslot sequence is broken + * and the branch and delayslot don't share pages. + * + * The TB contaning the branch insn will set up env->btarget and evaluate + * env->btaken. When the translation loop exits we will note that the branch + * sequence is broken and let env->dslot be the size of the branch insn (those + * vary in length). + * + * The TB contaning the delayslot will have the PC of its real insn (i.e no lsb + * set). It will also expect to have env->dslot setup with the size of the + * delay slot so that env->pc - env->dslot point to the branch insn. This TB + * will execute the dslot and take the branch, either to btarget or just one + * insn ahead. + * + * When exceptions occur, we check for env->dslot in do_interrupt to detect + * broken branch sequences and setup $erp accordingly (i.e let it point to the + * branch and set lsb). Then env->dslot gets cleared so that the exception + * handler can enter. When returning from exceptions (jump $erp) the lsb gets + * masked off and we will reexecute the branch insn. + * + */ + +/* generate intermediate code for basic block 'tb'. */ +void gen_intermediate_code(CPUCRISState *env, struct TranslationBlock *tb) +{ + CRISCPU *cpu = cris_env_get_cpu(env); + CPUState *cs = CPU(cpu); + uint32_t pc_start; + unsigned int insn_len; + struct DisasContext ctx; + struct DisasContext *dc = &ctx; + uint32_t next_page_start; + target_ulong npc; + int num_insns; + int max_insns; + + if (env->pregs[PR_VR] == 32) { + dc->decoder = crisv32_decoder; + dc->clear_locked_irq = 0; + } else { + dc->decoder = crisv10_decoder; + dc->clear_locked_irq = 1; + } + + /* Odd PC indicates that branch is rexecuting due to exception in the + * delayslot, like in real hw. + */ + pc_start = tb->pc & ~1; + dc->cpu = cpu; + dc->tb = tb; + + dc->is_jmp = DISAS_NEXT; + dc->ppc = pc_start; + dc->pc = pc_start; + dc->singlestep_enabled = cs->singlestep_enabled; + dc->flags_uptodate = 1; + dc->flagx_known = 1; + dc->flags_x = tb->flags & X_FLAG; + dc->cc_x_uptodate = 0; + dc->cc_mask = 0; + dc->update_cc = 0; + dc->clear_prefix = 0; + + cris_update_cc_op(dc, CC_OP_FLAGS, 4); + dc->cc_size_uptodate = -1; + + /* Decode TB flags. */ + dc->tb_flags = tb->flags & (S_FLAG | P_FLAG | U_FLAG \ + | X_FLAG | PFIX_FLAG); + dc->delayed_branch = !!(tb->flags & 7); + if (dc->delayed_branch) { + dc->jmp = JMP_INDIRECT; + } else { + dc->jmp = JMP_NOJMP; + } + + dc->cpustate_changed = 0; + + next_page_start = (pc_start & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE; + num_insns = 0; + max_insns = tb->cflags & CF_COUNT_MASK; + if (max_insns == 0) { + max_insns = CF_COUNT_MASK; + } + if (max_insns > TCG_MAX_INSNS) { + max_insns = TCG_MAX_INSNS; + } + + gen_tb_start(tb); + do { + tcg_gen_insn_start(dc->delayed_branch == 1 + ? dc->ppc | 1 : dc->pc); + num_insns++; + + if (unlikely(cpu_breakpoint_test(cs, dc->pc, BP_ANY))) { + cris_evaluate_flags(dc); + tcg_gen_movi_tl(env_pc, dc->pc); + t_gen_raise_exception(EXCP_DEBUG); + dc->is_jmp = DISAS_UPDATE; + /* The address covered by the breakpoint must be included in + [tb->pc, tb->pc + tb->size) in order to for it to be + properly cleared -- thus we increment the PC here so that + the logic setting tb->size below does the right thing. */ + dc->pc += 2; + break; + } + + /* Pretty disas. */ + LOG_DIS("%8.8x:\t", dc->pc); + + if (num_insns == max_insns && (tb->cflags & CF_LAST_IO)) { + gen_io_start(); + } + dc->clear_x = 1; + + insn_len = dc->decoder(env, dc); + dc->ppc = dc->pc; + dc->pc += insn_len; + if (dc->clear_x) { + cris_clear_x_flag(dc); + } + + /* Check for delayed branches here. If we do it before + actually generating any host code, the simulator will just + loop doing nothing for on this program location. */ + if (dc->delayed_branch) { + dc->delayed_branch--; + if (dc->delayed_branch == 0) { + if (tb->flags & 7) { + t_gen_mov_env_TN(dslot, tcg_const_tl(0)); + } + if (dc->cpustate_changed || !dc->flagx_known + || (dc->flags_x != (tb->flags & X_FLAG))) { + cris_store_direct_jmp(dc); + } + + if (dc->clear_locked_irq) { + dc->clear_locked_irq = 0; + t_gen_mov_env_TN(locked_irq, tcg_const_tl(0)); + } + + if (dc->jmp == JMP_DIRECT_CC) { + TCGLabel *l1 = gen_new_label(); + cris_evaluate_flags(dc); + + /* Conditional jmp. */ + tcg_gen_brcondi_tl(TCG_COND_EQ, + env_btaken, 0, l1); + gen_goto_tb(dc, 1, dc->jmp_pc); + gen_set_label(l1); + gen_goto_tb(dc, 0, dc->pc); + dc->is_jmp = DISAS_TB_JUMP; + dc->jmp = JMP_NOJMP; + } else if (dc->jmp == JMP_DIRECT) { + cris_evaluate_flags(dc); + gen_goto_tb(dc, 0, dc->jmp_pc); + dc->is_jmp = DISAS_TB_JUMP; + dc->jmp = JMP_NOJMP; + } else { + t_gen_cc_jmp(env_btarget, tcg_const_tl(dc->pc)); + dc->is_jmp = DISAS_JUMP; + } + break; + } + } + + /* If we are rexecuting a branch due to exceptions on + delay slots don't break. */ + if (!(tb->pc & 1) && cs->singlestep_enabled) { + break; + } + } while (!dc->is_jmp && !dc->cpustate_changed + && !tcg_op_buf_full() + && !singlestep + && (dc->pc < next_page_start) + && num_insns < max_insns); + + if (dc->clear_locked_irq) { + t_gen_mov_env_TN(locked_irq, tcg_const_tl(0)); + } + + npc = dc->pc; + + if (tb->cflags & CF_LAST_IO) + gen_io_end(); + /* Force an update if the per-tb cpu state has changed. */ + if (dc->is_jmp == DISAS_NEXT + && (dc->cpustate_changed || !dc->flagx_known + || (dc->flags_x != (tb->flags & X_FLAG)))) { + dc->is_jmp = DISAS_UPDATE; + tcg_gen_movi_tl(env_pc, npc); + } + /* Broken branch+delayslot sequence. */ + if (dc->delayed_branch == 1) { + /* Set env->dslot to the size of the branch insn. */ + t_gen_mov_env_TN(dslot, tcg_const_tl(dc->pc - dc->ppc)); + cris_store_direct_jmp(dc); + } + + cris_evaluate_flags(dc); + + if (unlikely(cs->singlestep_enabled)) { + if (dc->is_jmp == DISAS_NEXT) { + tcg_gen_movi_tl(env_pc, npc); + } + t_gen_raise_exception(EXCP_DEBUG); + } else { + switch (dc->is_jmp) { + case DISAS_NEXT: + gen_goto_tb(dc, 1, npc); + break; + default: + case DISAS_JUMP: + case DISAS_UPDATE: + /* indicate that the hash table must be used + to find the next TB */ + tcg_gen_exit_tb(0); + break; + case DISAS_SWI: + case DISAS_TB_JUMP: + /* nothing more to generate */ + break; + } + } + gen_tb_end(tb, num_insns); + + tb->size = dc->pc - pc_start; + tb->icount = num_insns; + +#ifdef DEBUG_DISAS +#if !DISAS_CRIS + if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM) + && qemu_log_in_addr_range(pc_start)) { + qemu_log_lock(); + qemu_log("--------------\n"); + qemu_log("IN: %s\n", lookup_symbol(pc_start)); + log_target_disas(cs, pc_start, dc->pc - pc_start, + env->pregs[PR_VR]); + qemu_log("\nisize=%d osize=%d\n", + dc->pc - pc_start, tcg_op_buf_count()); + qemu_log_unlock(); + } +#endif +#endif +} + +void cris_cpu_dump_state(CPUState *cs, FILE *f, fprintf_function cpu_fprintf, + int flags) +{ + CRISCPU *cpu = CRIS_CPU(cs); + CPUCRISState *env = &cpu->env; + const char **regnames; + const char **pregnames; + int i; + + if (!env || !f) { + return; + } + if (env->pregs[PR_VR] < 32) { + pregnames = pregnames_v10; + regnames = regnames_v10; + } else { + pregnames = pregnames_v32; + regnames = regnames_v32; + } + + cpu_fprintf(f, "PC=%x CCS=%x btaken=%d btarget=%x\n" + "cc_op=%d cc_src=%d cc_dest=%d cc_result=%x cc_mask=%x\n", + env->pc, env->pregs[PR_CCS], env->btaken, env->btarget, + env->cc_op, + env->cc_src, env->cc_dest, env->cc_result, env->cc_mask); + + + for (i = 0; i < 16; i++) { + cpu_fprintf(f, "%s=%8.8x ", regnames[i], env->regs[i]); + if ((i + 1) % 4 == 0) { + cpu_fprintf(f, "\n"); + } + } + cpu_fprintf(f, "\nspecial regs:\n"); + for (i = 0; i < 16; i++) { + cpu_fprintf(f, "%s=%8.8x ", pregnames[i], env->pregs[i]); + if ((i + 1) % 4 == 0) { + cpu_fprintf(f, "\n"); + } + } + if (env->pregs[PR_VR] >= 32) { + uint32_t srs = env->pregs[PR_SRS]; + cpu_fprintf(f, "\nsupport function regs bank %x:\n", srs); + if (srs < ARRAY_SIZE(env->sregs)) { + for (i = 0; i < 16; i++) { + cpu_fprintf(f, "s%2.2d=%8.8x ", + i, env->sregs[srs][i]); + if ((i + 1) % 4 == 0) { + cpu_fprintf(f, "\n"); + } + } + } + } + cpu_fprintf(f, "\n\n"); + +} + +void cris_initialize_tcg(void) +{ + int i; + + cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env"); + tcg_ctx.tcg_env = cpu_env; + cc_x = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, cc_x), "cc_x"); + cc_src = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, cc_src), "cc_src"); + cc_dest = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, cc_dest), + "cc_dest"); + cc_result = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, cc_result), + "cc_result"); + cc_op = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, cc_op), "cc_op"); + cc_size = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, cc_size), + "cc_size"); + cc_mask = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, cc_mask), + "cc_mask"); + + env_pc = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, pc), + "pc"); + env_btarget = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, btarget), + "btarget"); + env_btaken = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, btaken), + "btaken"); + for (i = 0; i < 16; i++) { + cpu_R[i] = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, regs[i]), + regnames_v32[i]); + } + for (i = 0; i < 16; i++) { + cpu_PR[i] = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, pregs[i]), + pregnames_v32[i]); + } +} + +void restore_state_to_opc(CPUCRISState *env, TranslationBlock *tb, + target_ulong *data) +{ + env->pc = data[0]; +} diff --git a/target/cris/translate_v10.c b/target/cris/translate_v10.c new file mode 100644 index 0000000000..4a0b485d8e --- /dev/null +++ b/target/cris/translate_v10.c @@ -0,0 +1,1315 @@ +/* + * CRISv10 emulation for qemu: main translation routines. + * + * Copyright (c) 2010 AXIS Communications AB + * Written by Edgar E. Iglesias. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "qemu/osdep.h" +#include "crisv10-decode.h" + +static const char *regnames_v10[] = +{ + "$r0", "$r1", "$r2", "$r3", + "$r4", "$r5", "$r6", "$r7", + "$r8", "$r9", "$r10", "$r11", + "$r12", "$r13", "$sp", "$pc", +}; + +static const char *pregnames_v10[] = +{ + "$bz", "$vr", "$p2", "$p3", + "$wz", "$ccr", "$p6-prefix", "$mof", + "$dz", "$ibr", "$irp", "$srp", + "$bar", "$dccr", "$brp", "$usp", +}; + +/* We need this table to handle preg-moves with implicit width. */ +static int preg_sizes_v10[] = { + 1, /* bz. */ + 1, /* vr. */ + 1, /* pid. */ + 1, /* srs. */ + 2, /* wz. */ + 2, 2, 4, + 4, 4, 4, 4, + 4, 4, 4, 4, +}; + +static inline int dec10_size(unsigned int size) +{ + size++; + if (size == 3) + size++; + return size; +} + +static inline void cris_illegal_insn(DisasContext *dc) +{ + qemu_log_mask(LOG_GUEST_ERROR, "illegal insn at pc=%x\n", dc->pc); + t_gen_raise_exception(EXCP_BREAK); +} + +static void gen_store_v10_conditional(DisasContext *dc, TCGv addr, TCGv val, + unsigned int size, int mem_index) +{ + TCGLabel *l1 = gen_new_label(); + TCGv taddr = tcg_temp_local_new(); + TCGv tval = tcg_temp_local_new(); + TCGv t1 = tcg_temp_local_new(); + dc->postinc = 0; + cris_evaluate_flags(dc); + + tcg_gen_mov_tl(taddr, addr); + tcg_gen_mov_tl(tval, val); + + /* Store only if F flag isn't set */ + tcg_gen_andi_tl(t1, cpu_PR[PR_CCS], F_FLAG_V10); + tcg_gen_brcondi_tl(TCG_COND_NE, t1, 0, l1); + if (size == 1) { + tcg_gen_qemu_st8(tval, taddr, mem_index); + } else if (size == 2) { + tcg_gen_qemu_st16(tval, taddr, mem_index); + } else { + tcg_gen_qemu_st32(tval, taddr, mem_index); + } + gen_set_label(l1); + tcg_gen_shri_tl(t1, t1, 1); /* shift F to P position */ + tcg_gen_or_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], t1); /*P=F*/ + tcg_temp_free(t1); + tcg_temp_free(tval); + tcg_temp_free(taddr); +} + +static void gen_store_v10(DisasContext *dc, TCGv addr, TCGv val, + unsigned int size) +{ + int mem_index = cpu_mmu_index(&dc->cpu->env, false); + + /* If we get a fault on a delayslot we must keep the jmp state in + the cpu-state to be able to re-execute the jmp. */ + if (dc->delayed_branch == 1) { + cris_store_direct_jmp(dc); + } + + /* Conditional writes. We only support the kind were X is known + at translation time. */ + if (dc->flagx_known && dc->flags_x) { + gen_store_v10_conditional(dc, addr, val, size, mem_index); + return; + } + + if (size == 1) { + tcg_gen_qemu_st8(val, addr, mem_index); + } else if (size == 2) { + tcg_gen_qemu_st16(val, addr, mem_index); + } else { + tcg_gen_qemu_st32(val, addr, mem_index); + } +} + + +/* Prefix flag and register are used to handle the more complex + addressing modes. */ +static void cris_set_prefix(DisasContext *dc) +{ + dc->clear_prefix = 0; + dc->tb_flags |= PFIX_FLAG; + tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], PFIX_FLAG); + + /* prefix insns don't clear the x flag. */ + dc->clear_x = 0; + cris_lock_irq(dc); +} + +static void crisv10_prepare_memaddr(DisasContext *dc, + TCGv addr, unsigned int size) +{ + if (dc->tb_flags & PFIX_FLAG) { + tcg_gen_mov_tl(addr, cpu_PR[PR_PREFIX]); + } else { + tcg_gen_mov_tl(addr, cpu_R[dc->src]); + } +} + +static unsigned int crisv10_post_memaddr(DisasContext *dc, unsigned int size) +{ + unsigned int insn_len = 0; + + if (dc->tb_flags & PFIX_FLAG) { + if (dc->mode == CRISV10_MODE_AUTOINC) { + tcg_gen_mov_tl(cpu_R[dc->src], cpu_PR[PR_PREFIX]); + } + } else { + if (dc->mode == CRISV10_MODE_AUTOINC) { + if (dc->src == 15) { + insn_len += size & ~1; + } else { + tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], size); + } + } + } + return insn_len; +} + +static int dec10_prep_move_m(CPUCRISState *env, DisasContext *dc, + int s_ext, int memsize, TCGv dst) +{ + unsigned int rs; + uint32_t imm; + int is_imm; + int insn_len = 0; + + rs = dc->src; + is_imm = rs == 15 && !(dc->tb_flags & PFIX_FLAG); + LOG_DIS("rs=%d rd=%d is_imm=%d mode=%d pfix=%d\n", + rs, dc->dst, is_imm, dc->mode, dc->tb_flags & PFIX_FLAG); + + /* Load [$rs] onto T1. */ + if (is_imm) { + if (memsize != 4) { + if (s_ext) { + if (memsize == 1) + imm = cpu_ldsb_code(env, dc->pc + 2); + else + imm = cpu_ldsw_code(env, dc->pc + 2); + } else { + if (memsize == 1) + imm = cpu_ldub_code(env, dc->pc + 2); + else + imm = cpu_lduw_code(env, dc->pc + 2); + } + } else + imm = cpu_ldl_code(env, dc->pc + 2); + + tcg_gen_movi_tl(dst, imm); + + if (dc->mode == CRISV10_MODE_AUTOINC) { + insn_len += memsize; + if (memsize == 1) + insn_len++; + tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len); + } + } else { + TCGv addr; + + addr = tcg_temp_new(); + cris_flush_cc_state(dc); + crisv10_prepare_memaddr(dc, addr, memsize); + gen_load(dc, dst, addr, memsize, 0); + if (s_ext) + t_gen_sext(dst, dst, memsize); + else + t_gen_zext(dst, dst, memsize); + insn_len += crisv10_post_memaddr(dc, memsize); + tcg_temp_free(addr); + } + + if (dc->mode == CRISV10_MODE_INDIRECT && (dc->tb_flags & PFIX_FLAG)) { + dc->dst = dc->src; + } + return insn_len; +} + +static unsigned int dec10_quick_imm(DisasContext *dc) +{ + int32_t imm, simm; + int op; + + /* sign extend. */ + imm = dc->ir & ((1 << 6) - 1); + simm = (int8_t) (imm << 2); + simm >>= 2; + switch (dc->opcode) { + case CRISV10_QIMM_BDAP_R0: + case CRISV10_QIMM_BDAP_R1: + case CRISV10_QIMM_BDAP_R2: + case CRISV10_QIMM_BDAP_R3: + simm = (int8_t)dc->ir; + LOG_DIS("bdap %d $r%d\n", simm, dc->dst); + LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n", + dc->pc, dc->mode, dc->opcode, dc->src, dc->dst); + cris_set_prefix(dc); + if (dc->dst == 15) { + tcg_gen_movi_tl(cpu_PR[PR_PREFIX], dc->pc + 2 + simm); + } else { + tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm); + } + break; + + case CRISV10_QIMM_MOVEQ: + LOG_DIS("moveq %d, $r%d\n", simm, dc->dst); + + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], + cpu_R[dc->dst], tcg_const_tl(simm), 4); + break; + case CRISV10_QIMM_CMPQ: + LOG_DIS("cmpq %d, $r%d\n", simm, dc->dst); + + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst], + cpu_R[dc->dst], tcg_const_tl(simm), 4); + break; + case CRISV10_QIMM_ADDQ: + LOG_DIS("addq %d, $r%d\n", imm, dc->dst); + + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_ADD, cpu_R[dc->dst], + cpu_R[dc->dst], tcg_const_tl(imm), 4); + break; + case CRISV10_QIMM_ANDQ: + LOG_DIS("andq %d, $r%d\n", simm, dc->dst); + + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_AND, cpu_R[dc->dst], + cpu_R[dc->dst], tcg_const_tl(simm), 4); + break; + case CRISV10_QIMM_ASHQ: + LOG_DIS("ashq %d, $r%d\n", simm, dc->dst); + + cris_cc_mask(dc, CC_MASK_NZVC); + op = imm & (1 << 5); + imm &= 0x1f; + if (op) { + cris_alu(dc, CC_OP_ASR, cpu_R[dc->dst], + cpu_R[dc->dst], tcg_const_tl(imm), 4); + } else { + /* BTST */ + cris_update_cc_op(dc, CC_OP_FLAGS, 4); + gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->dst], + tcg_const_tl(imm), cpu_PR[PR_CCS]); + } + break; + case CRISV10_QIMM_LSHQ: + LOG_DIS("lshq %d, $r%d\n", simm, dc->dst); + + op = CC_OP_LSL; + if (imm & (1 << 5)) { + op = CC_OP_LSR; + } + imm &= 0x1f; + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, op, cpu_R[dc->dst], + cpu_R[dc->dst], tcg_const_tl(imm), 4); + break; + case CRISV10_QIMM_SUBQ: + LOG_DIS("subq %d, $r%d\n", imm, dc->dst); + + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_SUB, cpu_R[dc->dst], + cpu_R[dc->dst], tcg_const_tl(imm), 4); + break; + case CRISV10_QIMM_ORQ: + LOG_DIS("andq %d, $r%d\n", simm, dc->dst); + + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_OR, cpu_R[dc->dst], + cpu_R[dc->dst], tcg_const_tl(simm), 4); + break; + + case CRISV10_QIMM_BCC_R0: + case CRISV10_QIMM_BCC_R1: + case CRISV10_QIMM_BCC_R2: + case CRISV10_QIMM_BCC_R3: + imm = dc->ir & 0xff; + /* bit 0 is a sign bit. */ + if (imm & 1) { + imm |= 0xffffff00; /* sign extend. */ + imm &= ~1; /* get rid of the sign bit. */ + } + imm += 2; + LOG_DIS("b%s %d\n", cc_name(dc->cond), imm); + + cris_cc_mask(dc, 0); + cris_prepare_cc_branch(dc, imm, dc->cond); + break; + + default: + LOG_DIS("pc=%x mode=%x quickimm %d r%d r%d\n", + dc->pc, dc->mode, dc->opcode, dc->src, dc->dst); + cpu_abort(CPU(dc->cpu), "Unhandled quickimm\n"); + break; + } + return 2; +} + +static unsigned int dec10_setclrf(DisasContext *dc) +{ + uint32_t flags; + unsigned int set = ~dc->opcode & 1; + + flags = EXTRACT_FIELD(dc->ir, 0, 3) + | (EXTRACT_FIELD(dc->ir, 12, 15) << 4); + LOG_DIS("%s set=%d flags=%x\n", __func__, set, flags); + + + if (flags & X_FLAG) { + dc->flagx_known = 1; + if (set) + dc->flags_x = X_FLAG; + else + dc->flags_x = 0; + } + + cris_evaluate_flags (dc); + cris_update_cc_op(dc, CC_OP_FLAGS, 4); + cris_update_cc_x(dc); + tcg_gen_movi_tl(cc_op, dc->cc_op); + + if (set) { + tcg_gen_ori_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], flags); + } else { + tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], + ~(flags|F_FLAG_V10|P_FLAG_V10)); + } + + dc->flags_uptodate = 1; + dc->clear_x = 0; + cris_lock_irq(dc); + return 2; +} + +static inline void dec10_reg_prep_sext(DisasContext *dc, int size, int sext, + TCGv dd, TCGv ds, TCGv sd, TCGv ss) +{ + if (sext) { + t_gen_sext(dd, sd, size); + t_gen_sext(ds, ss, size); + } else { + t_gen_zext(dd, sd, size); + t_gen_zext(ds, ss, size); + } +} + +static void dec10_reg_alu(DisasContext *dc, int op, int size, int sext) +{ + TCGv t[2]; + + t[0] = tcg_temp_new(); + t[1] = tcg_temp_new(); + dec10_reg_prep_sext(dc, size, sext, + t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]); + + if (op == CC_OP_LSL || op == CC_OP_LSR || op == CC_OP_ASR) { + tcg_gen_andi_tl(t[1], t[1], 63); + } + + assert(dc->dst != 15); + cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], size); + tcg_temp_free(t[0]); + tcg_temp_free(t[1]); +} + +static void dec10_reg_bound(DisasContext *dc, int size) +{ + TCGv t; + + t = tcg_temp_local_new(); + t_gen_zext(t, cpu_R[dc->src], size); + cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[dc->dst], t, 4); + tcg_temp_free(t); +} + +static void dec10_reg_mul(DisasContext *dc, int size, int sext) +{ + int op = sext ? CC_OP_MULS : CC_OP_MULU; + TCGv t[2]; + + t[0] = tcg_temp_new(); + t[1] = tcg_temp_new(); + dec10_reg_prep_sext(dc, size, sext, + t[0], t[1], cpu_R[dc->dst], cpu_R[dc->src]); + + cris_alu(dc, op, cpu_R[dc->dst], t[0], t[1], 4); + + tcg_temp_free(t[0]); + tcg_temp_free(t[1]); +} + + +static void dec10_reg_movs(DisasContext *dc) +{ + int size = (dc->size & 1) + 1; + TCGv t; + + LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst); + cris_cc_mask(dc, CC_MASK_NZVC); + + t = tcg_temp_new(); + if (dc->ir & 32) + t_gen_sext(t, cpu_R[dc->src], size); + else + t_gen_zext(t, cpu_R[dc->src], size); + + cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, 4); + tcg_temp_free(t); +} + +static void dec10_reg_alux(DisasContext *dc, int op) +{ + int size = (dc->size & 1) + 1; + TCGv t; + + LOG_DIS("movx.%d $r%d, $r%d\n", size, dc->src, dc->dst); + cris_cc_mask(dc, CC_MASK_NZVC); + + t = tcg_temp_new(); + if (dc->ir & 32) + t_gen_sext(t, cpu_R[dc->src], size); + else + t_gen_zext(t, cpu_R[dc->src], size); + + cris_alu(dc, op, cpu_R[dc->dst], cpu_R[dc->dst], t, 4); + tcg_temp_free(t); +} + +static void dec10_reg_mov_pr(DisasContext *dc) +{ + LOG_DIS("move p%d r%d sz=%d\n", dc->dst, dc->src, preg_sizes_v10[dc->dst]); + cris_lock_irq(dc); + if (dc->src == 15) { + tcg_gen_mov_tl(env_btarget, cpu_PR[dc->dst]); + cris_prepare_jmp(dc, JMP_INDIRECT); + return; + } + if (dc->dst == PR_CCS) { + cris_evaluate_flags(dc); + } + cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src], + cpu_R[dc->src], cpu_PR[dc->dst], preg_sizes_v10[dc->dst]); +} + +static void dec10_reg_abs(DisasContext *dc) +{ + TCGv t0; + + LOG_DIS("abs $r%u, $r%u\n", dc->src, dc->dst); + + assert(dc->dst != 15); + t0 = tcg_temp_new(); + tcg_gen_sari_tl(t0, cpu_R[dc->src], 31); + tcg_gen_xor_tl(cpu_R[dc->dst], cpu_R[dc->src], t0); + tcg_gen_sub_tl(t0, cpu_R[dc->dst], t0); + + cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t0, 4); + tcg_temp_free(t0); +} + +static void dec10_reg_swap(DisasContext *dc) +{ + TCGv t0; + + LOG_DIS("not $r%d, $r%d\n", dc->src, dc->dst); + + cris_cc_mask(dc, CC_MASK_NZVC); + t0 = tcg_temp_new(); + tcg_gen_mov_tl(t0, cpu_R[dc->src]); + if (dc->dst & 8) + tcg_gen_not_tl(t0, t0); + if (dc->dst & 4) + t_gen_swapw(t0, t0); + if (dc->dst & 2) + t_gen_swapb(t0, t0); + if (dc->dst & 1) + t_gen_swapr(t0, t0); + cris_alu(dc, CC_OP_MOVE, cpu_R[dc->src], cpu_R[dc->src], t0, 4); + tcg_temp_free(t0); +} + +static void dec10_reg_scc(DisasContext *dc) +{ + int cond = dc->dst; + + LOG_DIS("s%s $r%u\n", cc_name(cond), dc->src); + + gen_tst_cc(dc, cpu_R[dc->src], cond); + tcg_gen_setcondi_tl(TCG_COND_NE, cpu_R[dc->src], cpu_R[dc->src], 0); + + cris_cc_mask(dc, 0); +} + +static unsigned int dec10_reg(DisasContext *dc) +{ + TCGv t; + unsigned int insn_len = 2; + unsigned int size = dec10_size(dc->size); + unsigned int tmp; + + if (dc->size != 3) { + switch (dc->opcode) { + case CRISV10_REG_MOVE_R: + LOG_DIS("move.%d $r%d, $r%d\n", dc->size, dc->src, dc->dst); + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alu(dc, CC_OP_MOVE, size, 0); + if (dc->dst == 15) { + tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]); + cris_prepare_jmp(dc, JMP_INDIRECT); + dc->delayed_branch = 1; + } + break; + case CRISV10_REG_MOVX: + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_movs(dc); + break; + case CRISV10_REG_ADDX: + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alux(dc, CC_OP_ADD); + break; + case CRISV10_REG_SUBX: + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alux(dc, CC_OP_SUB); + break; + case CRISV10_REG_ADD: + LOG_DIS("add $r%d, $r%d sz=%d\n", dc->src, dc->dst, size); + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alu(dc, CC_OP_ADD, size, 0); + break; + case CRISV10_REG_SUB: + LOG_DIS("sub $r%d, $r%d sz=%d\n", dc->src, dc->dst, size); + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alu(dc, CC_OP_SUB, size, 0); + break; + case CRISV10_REG_CMP: + LOG_DIS("cmp $r%d, $r%d sz=%d\n", dc->src, dc->dst, size); + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alu(dc, CC_OP_CMP, size, 0); + break; + case CRISV10_REG_BOUND: + LOG_DIS("bound $r%d, $r%d sz=%d\n", dc->src, dc->dst, size); + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_bound(dc, size); + break; + case CRISV10_REG_AND: + LOG_DIS("and $r%d, $r%d sz=%d\n", dc->src, dc->dst, size); + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alu(dc, CC_OP_AND, size, 0); + break; + case CRISV10_REG_ADDI: + if (dc->src == 15) { + /* nop. */ + return 2; + } + t = tcg_temp_new(); + LOG_DIS("addi r%d r%d size=%d\n", dc->src, dc->dst, dc->size); + tcg_gen_shli_tl(t, cpu_R[dc->dst], dc->size & 3); + tcg_gen_add_tl(cpu_R[dc->src], cpu_R[dc->src], t); + tcg_temp_free(t); + break; + case CRISV10_REG_LSL: + LOG_DIS("lsl $r%d, $r%d sz=%d\n", dc->src, dc->dst, size); + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alu(dc, CC_OP_LSL, size, 0); + break; + case CRISV10_REG_LSR: + LOG_DIS("lsr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size); + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alu(dc, CC_OP_LSR, size, 0); + break; + case CRISV10_REG_ASR: + LOG_DIS("asr $r%d, $r%d sz=%d\n", dc->src, dc->dst, size); + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alu(dc, CC_OP_ASR, size, 1); + break; + case CRISV10_REG_OR: + LOG_DIS("or $r%d, $r%d sz=%d\n", dc->src, dc->dst, size); + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alu(dc, CC_OP_OR, size, 0); + break; + case CRISV10_REG_NEG: + LOG_DIS("neg $r%d, $r%d sz=%d\n", dc->src, dc->dst, size); + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alu(dc, CC_OP_NEG, size, 0); + break; + case CRISV10_REG_BIAP: + LOG_DIS("BIAP pc=%x reg %d r%d r%d size=%d\n", dc->pc, + dc->opcode, dc->src, dc->dst, size); + switch (size) { + case 4: tmp = 2; break; + case 2: tmp = 1; break; + case 1: tmp = 0; break; + default: + cpu_abort(CPU(dc->cpu), "Unhandled BIAP"); + break; + } + + t = tcg_temp_new(); + tcg_gen_shli_tl(t, cpu_R[dc->dst], tmp); + if (dc->src == 15) { + tcg_gen_addi_tl(cpu_PR[PR_PREFIX], t, ((dc->pc +2)| 1) + 1); + } else { + tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_R[dc->src], t); + } + tcg_temp_free(t); + cris_set_prefix(dc); + break; + + default: + LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc, + dc->opcode, dc->src, dc->dst); + cpu_abort(CPU(dc->cpu), "Unhandled opcode"); + break; + } + } else { + switch (dc->opcode) { + case CRISV10_REG_MOVX: + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_movs(dc); + break; + case CRISV10_REG_ADDX: + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alux(dc, CC_OP_ADD); + break; + case CRISV10_REG_SUBX: + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alux(dc, CC_OP_SUB); + break; + case CRISV10_REG_MOVE_SPR_R: + cris_evaluate_flags(dc); + cris_cc_mask(dc, 0); + dec10_reg_mov_pr(dc); + break; + case CRISV10_REG_MOVE_R_SPR: + LOG_DIS("move r%d p%d\n", dc->src, dc->dst); + cris_evaluate_flags(dc); + if (dc->src != 11) /* fast for srp. */ + dc->cpustate_changed = 1; + t_gen_mov_preg_TN(dc, dc->dst, cpu_R[dc->src]); + break; + case CRISV10_REG_SETF: + case CRISV10_REG_CLEARF: + dec10_setclrf(dc); + break; + case CRISV10_REG_SWAP: + dec10_reg_swap(dc); + break; + case CRISV10_REG_ABS: + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_abs(dc); + break; + case CRISV10_REG_LZ: + LOG_DIS("lz $r%d, $r%d sz=%d\n", dc->src, dc->dst, size); + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alu(dc, CC_OP_LZ, 4, 0); + break; + case CRISV10_REG_XOR: + LOG_DIS("xor $r%d, $r%d sz=%d\n", dc->src, dc->dst, size); + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_alu(dc, CC_OP_XOR, 4, 0); + break; + case CRISV10_REG_BTST: + LOG_DIS("btst $r%d, $r%d sz=%d\n", dc->src, dc->dst, size); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_update_cc_op(dc, CC_OP_FLAGS, 4); + gen_helper_btst(cpu_PR[PR_CCS], cpu_env, cpu_R[dc->dst], + cpu_R[dc->src], cpu_PR[PR_CCS]); + break; + case CRISV10_REG_DSTEP: + LOG_DIS("dstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_DSTEP, cpu_R[dc->dst], + cpu_R[dc->dst], cpu_R[dc->src], 4); + break; + case CRISV10_REG_MSTEP: + LOG_DIS("mstep $r%d, $r%d sz=%d\n", dc->src, dc->dst, size); + cris_evaluate_flags(dc); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu(dc, CC_OP_MSTEP, cpu_R[dc->dst], + cpu_R[dc->dst], cpu_R[dc->src], 4); + break; + case CRISV10_REG_SCC: + dec10_reg_scc(dc); + break; + default: + LOG_DIS("pc=%x reg %d r%d r%d\n", dc->pc, + dc->opcode, dc->src, dc->dst); + cpu_abort(CPU(dc->cpu), "Unhandled opcode"); + break; + } + } + return insn_len; +} + +static unsigned int dec10_ind_move_m_r(CPUCRISState *env, DisasContext *dc, + unsigned int size) +{ + unsigned int insn_len = 2; + TCGv t; + + LOG_DIS("%s: move.%d [$r%d], $r%d\n", __func__, + size, dc->src, dc->dst); + + cris_cc_mask(dc, CC_MASK_NZVC); + t = tcg_temp_new(); + insn_len += dec10_prep_move_m(env, dc, 0, size, t); + cris_alu(dc, CC_OP_MOVE, cpu_R[dc->dst], cpu_R[dc->dst], t, size); + if (dc->dst == 15) { + tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]); + cris_prepare_jmp(dc, JMP_INDIRECT); + dc->delayed_branch = 1; + return insn_len; + } + + tcg_temp_free(t); + return insn_len; +} + +static unsigned int dec10_ind_move_r_m(DisasContext *dc, unsigned int size) +{ + unsigned int insn_len = 2; + TCGv addr; + + LOG_DIS("move.%d $r%d, [$r%d]\n", dc->size, dc->src, dc->dst); + addr = tcg_temp_new(); + crisv10_prepare_memaddr(dc, addr, size); + gen_store_v10(dc, addr, cpu_R[dc->dst], size); + insn_len += crisv10_post_memaddr(dc, size); + + return insn_len; +} + +static unsigned int dec10_ind_move_m_pr(CPUCRISState *env, DisasContext *dc) +{ + unsigned int insn_len = 2, rd = dc->dst; + TCGv t, addr; + + LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src); + cris_lock_irq(dc); + + addr = tcg_temp_new(); + t = tcg_temp_new(); + insn_len += dec10_prep_move_m(env, dc, 0, 4, t); + if (rd == 15) { + tcg_gen_mov_tl(env_btarget, t); + cris_prepare_jmp(dc, JMP_INDIRECT); + dc->delayed_branch = 1; + return insn_len; + } + + tcg_gen_mov_tl(cpu_PR[rd], t); + dc->cpustate_changed = 1; + tcg_temp_free(addr); + tcg_temp_free(t); + return insn_len; +} + +static unsigned int dec10_ind_move_pr_m(DisasContext *dc) +{ + unsigned int insn_len = 2, size = preg_sizes_v10[dc->dst]; + TCGv addr, t0; + + LOG_DIS("move.%d $p%d, [$r%d]\n", dc->size, dc->dst, dc->src); + + addr = tcg_temp_new(); + crisv10_prepare_memaddr(dc, addr, size); + if (dc->dst == PR_CCS) { + t0 = tcg_temp_new(); + cris_evaluate_flags(dc); + tcg_gen_andi_tl(t0, cpu_PR[PR_CCS], ~PFIX_FLAG); + gen_store_v10(dc, addr, t0, size); + tcg_temp_free(t0); + } else { + gen_store_v10(dc, addr, cpu_PR[dc->dst], size); + } + t0 = tcg_temp_new(); + insn_len += crisv10_post_memaddr(dc, size); + cris_lock_irq(dc); + + return insn_len; +} + +static void dec10_movem_r_m(DisasContext *dc) +{ + int i, pfix = dc->tb_flags & PFIX_FLAG; + TCGv addr, t0; + + LOG_DIS("%s r%d, [r%d] pi=%d ir=%x\n", __func__, + dc->dst, dc->src, dc->postinc, dc->ir); + + addr = tcg_temp_new(); + t0 = tcg_temp_new(); + crisv10_prepare_memaddr(dc, addr, 4); + tcg_gen_mov_tl(t0, addr); + for (i = dc->dst; i >= 0; i--) { + if ((pfix && dc->mode == CRISV10_MODE_AUTOINC) && dc->src == i) { + gen_store_v10(dc, addr, t0, 4); + } else { + gen_store_v10(dc, addr, cpu_R[i], 4); + } + tcg_gen_addi_tl(addr, addr, 4); + } + + if (pfix && dc->mode == CRISV10_MODE_AUTOINC) { + tcg_gen_mov_tl(cpu_R[dc->src], t0); + } + + if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) { + tcg_gen_mov_tl(cpu_R[dc->src], addr); + } + tcg_temp_free(addr); + tcg_temp_free(t0); +} + +static void dec10_movem_m_r(DisasContext *dc) +{ + int i, pfix = dc->tb_flags & PFIX_FLAG; + TCGv addr, t0; + + LOG_DIS("%s [r%d], r%d pi=%d ir=%x\n", __func__, + dc->src, dc->dst, dc->postinc, dc->ir); + + addr = tcg_temp_new(); + t0 = tcg_temp_new(); + crisv10_prepare_memaddr(dc, addr, 4); + tcg_gen_mov_tl(t0, addr); + for (i = dc->dst; i >= 0; i--) { + gen_load(dc, cpu_R[i], addr, 4, 0); + tcg_gen_addi_tl(addr, addr, 4); + } + + if (pfix && dc->mode == CRISV10_MODE_AUTOINC) { + tcg_gen_mov_tl(cpu_R[dc->src], t0); + } + + if (!pfix && dc->mode == CRISV10_MODE_AUTOINC) { + tcg_gen_mov_tl(cpu_R[dc->src], addr); + } + tcg_temp_free(addr); + tcg_temp_free(t0); +} + +static int dec10_ind_alu(CPUCRISState *env, DisasContext *dc, + int op, unsigned int size) +{ + int insn_len = 0; + int rd = dc->dst; + TCGv t[2]; + + cris_alu_m_alloc_temps(t); + insn_len += dec10_prep_move_m(env, dc, 0, size, t[0]); + cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t[0], size); + if (dc->dst == 15) { + tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]); + cris_prepare_jmp(dc, JMP_INDIRECT); + dc->delayed_branch = 1; + return insn_len; + } + + cris_alu_m_free_temps(t); + + return insn_len; +} + +static int dec10_ind_bound(CPUCRISState *env, DisasContext *dc, + unsigned int size) +{ + int insn_len = 0; + int rd = dc->dst; + TCGv t; + + t = tcg_temp_local_new(); + insn_len += dec10_prep_move_m(env, dc, 0, size, t); + cris_alu(dc, CC_OP_BOUND, cpu_R[dc->dst], cpu_R[rd], t, 4); + if (dc->dst == 15) { + tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]); + cris_prepare_jmp(dc, JMP_INDIRECT); + dc->delayed_branch = 1; + return insn_len; + } + + tcg_temp_free(t); + return insn_len; +} + +static int dec10_alux_m(CPUCRISState *env, DisasContext *dc, int op) +{ + unsigned int size = (dc->size & 1) ? 2 : 1; + unsigned int sx = !!(dc->size & 2); + int insn_len = 2; + int rd = dc->dst; + TCGv t; + + LOG_DIS("addx size=%d sx=%d op=%d %d\n", size, sx, dc->src, dc->dst); + + t = tcg_temp_new(); + + cris_cc_mask(dc, CC_MASK_NZVC); + insn_len += dec10_prep_move_m(env, dc, sx, size, t); + cris_alu(dc, op, cpu_R[dc->dst], cpu_R[rd], t, 4); + if (dc->dst == 15) { + tcg_gen_mov_tl(env_btarget, cpu_R[dc->dst]); + cris_prepare_jmp(dc, JMP_INDIRECT); + dc->delayed_branch = 1; + return insn_len; + } + + tcg_temp_free(t); + return insn_len; +} + +static int dec10_dip(CPUCRISState *env, DisasContext *dc) +{ + int insn_len = 2; + uint32_t imm; + + LOG_DIS("dip pc=%x opcode=%d r%d r%d\n", + dc->pc, dc->opcode, dc->src, dc->dst); + if (dc->src == 15) { + imm = cpu_ldl_code(env, dc->pc + 2); + tcg_gen_movi_tl(cpu_PR[PR_PREFIX], imm); + if (dc->postinc) + insn_len += 4; + tcg_gen_addi_tl(cpu_R[15], cpu_R[15], insn_len - 2); + } else { + gen_load(dc, cpu_PR[PR_PREFIX], cpu_R[dc->src], 4, 0); + if (dc->postinc) + tcg_gen_addi_tl(cpu_R[dc->src], cpu_R[dc->src], 4); + } + + cris_set_prefix(dc); + return insn_len; +} + +static int dec10_bdap_m(CPUCRISState *env, DisasContext *dc, int size) +{ + int insn_len = 2; + int rd = dc->dst; + + LOG_DIS("bdap_m pc=%x opcode=%d r%d r%d sz=%d\n", + dc->pc, dc->opcode, dc->src, dc->dst, size); + + assert(dc->dst != 15); +#if 0 + /* 8bit embedded offset? */ + if (!dc->postinc && (dc->ir & (1 << 11))) { + int simm = dc->ir & 0xff; + + /* cpu_abort(CPU(dc->cpu), "Unhandled opcode"); */ + /* sign extended. */ + simm = (int8_t)simm; + + tcg_gen_addi_tl(cpu_PR[PR_PREFIX], cpu_R[dc->dst], simm); + + cris_set_prefix(dc); + return insn_len; + } +#endif + /* Now the rest of the modes are truly indirect. */ + insn_len += dec10_prep_move_m(env, dc, 1, size, cpu_PR[PR_PREFIX]); + tcg_gen_add_tl(cpu_PR[PR_PREFIX], cpu_PR[PR_PREFIX], cpu_R[rd]); + cris_set_prefix(dc); + return insn_len; +} + +static unsigned int dec10_ind(CPUCRISState *env, DisasContext *dc) +{ + unsigned int insn_len = 2; + unsigned int size = dec10_size(dc->size); + uint32_t imm; + int32_t simm; + TCGv t[2]; + + if (dc->size != 3) { + switch (dc->opcode) { + case CRISV10_IND_MOVE_M_R: + return dec10_ind_move_m_r(env, dc, size); + break; + case CRISV10_IND_MOVE_R_M: + return dec10_ind_move_r_m(dc, size); + break; + case CRISV10_IND_CMP: + LOG_DIS("cmp size=%d op=%d %d\n", size, dc->src, dc->dst); + cris_cc_mask(dc, CC_MASK_NZVC); + insn_len += dec10_ind_alu(env, dc, CC_OP_CMP, size); + break; + case CRISV10_IND_TEST: + LOG_DIS("test size=%d op=%d %d\n", size, dc->src, dc->dst); + + cris_evaluate_flags(dc); + cris_cc_mask(dc, CC_MASK_NZVC); + cris_alu_m_alloc_temps(t); + insn_len += dec10_prep_move_m(env, dc, 0, size, t[0]); + tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~3); + cris_alu(dc, CC_OP_CMP, cpu_R[dc->dst], + t[0], tcg_const_tl(0), size); + cris_alu_m_free_temps(t); + break; + case CRISV10_IND_ADD: + LOG_DIS("add size=%d op=%d %d\n", size, dc->src, dc->dst); + cris_cc_mask(dc, CC_MASK_NZVC); + insn_len += dec10_ind_alu(env, dc, CC_OP_ADD, size); + break; + case CRISV10_IND_SUB: + LOG_DIS("sub size=%d op=%d %d\n", size, dc->src, dc->dst); + cris_cc_mask(dc, CC_MASK_NZVC); + insn_len += dec10_ind_alu(env, dc, CC_OP_SUB, size); + break; + case CRISV10_IND_BOUND: + LOG_DIS("bound size=%d op=%d %d\n", size, dc->src, dc->dst); + cris_cc_mask(dc, CC_MASK_NZVC); + insn_len += dec10_ind_bound(env, dc, size); + break; + case CRISV10_IND_AND: + LOG_DIS("and size=%d op=%d %d\n", size, dc->src, dc->dst); + cris_cc_mask(dc, CC_MASK_NZVC); + insn_len += dec10_ind_alu(env, dc, CC_OP_AND, size); + break; + case CRISV10_IND_OR: + LOG_DIS("or size=%d op=%d %d\n", size, dc->src, dc->dst); + cris_cc_mask(dc, CC_MASK_NZVC); + insn_len += dec10_ind_alu(env, dc, CC_OP_OR, size); + break; + case CRISV10_IND_MOVX: + insn_len = dec10_alux_m(env, dc, CC_OP_MOVE); + break; + case CRISV10_IND_ADDX: + insn_len = dec10_alux_m(env, dc, CC_OP_ADD); + break; + case CRISV10_IND_SUBX: + insn_len = dec10_alux_m(env, dc, CC_OP_SUB); + break; + case CRISV10_IND_CMPX: + insn_len = dec10_alux_m(env, dc, CC_OP_CMP); + break; + case CRISV10_IND_MUL: + /* This is a reg insn coded in the mem indir space. */ + LOG_DIS("mul pc=%x opcode=%d\n", dc->pc, dc->opcode); + cris_cc_mask(dc, CC_MASK_NZVC); + dec10_reg_mul(dc, size, dc->ir & (1 << 10)); + break; + case CRISV10_IND_BDAP_M: + insn_len = dec10_bdap_m(env, dc, size); + break; + default: + /* + * ADDC for v17: + * + * Instruction format: ADDC [Rs],Rd + * + * +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+-+ + * |Destination(Rd)| 1 0 0 1 1 0 1 0 | Source(Rs)| + * +---+---+---+---+---+---+---+---+---+---+---+---+---+---+--+--+ + * + * Instruction format: ADDC [Rs+],Rd + * + * +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+-+ + * |Destination(Rd)| 1 1 0 1 1 0 1 0 | Source(Rs)| + * +---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+-+ + */ + if (dc->opcode == CRISV17_IND_ADDC && dc->size == 2 && + env->pregs[PR_VR] == 17) { + LOG_DIS("addc op=%d %d\n", dc->src, dc->dst); + cris_cc_mask(dc, CC_MASK_NZVC); + insn_len += dec10_ind_alu(env, dc, CC_OP_ADDC, size); + break; + } + + LOG_DIS("pc=%x var-ind.%d %d r%d r%d\n", + dc->pc, size, dc->opcode, dc->src, dc->dst); + cpu_abort(CPU(dc->cpu), "Unhandled opcode"); + break; + } + return insn_len; + } + + switch (dc->opcode) { + case CRISV10_IND_MOVE_M_SPR: + insn_len = dec10_ind_move_m_pr(env, dc); + break; + case CRISV10_IND_MOVE_SPR_M: + insn_len = dec10_ind_move_pr_m(dc); + break; + case CRISV10_IND_JUMP_M: + if (dc->src == 15) { + LOG_DIS("jump.%d %d r%d r%d direct\n", size, + dc->opcode, dc->src, dc->dst); + imm = cpu_ldl_code(env, dc->pc + 2); + if (dc->mode == CRISV10_MODE_AUTOINC) + insn_len += size; + + t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len)); + dc->jmp_pc = imm; + cris_prepare_jmp(dc, JMP_DIRECT); + dc->delayed_branch--; /* v10 has no dslot here. */ + } else { + if (dc->dst == 14) { + LOG_DIS("break %d\n", dc->src); + cris_evaluate_flags(dc); + tcg_gen_movi_tl(env_pc, dc->pc + 2); + t_gen_mov_env_TN(trap_vector, tcg_const_tl(dc->src + 2)); + t_gen_raise_exception(EXCP_BREAK); + dc->is_jmp = DISAS_UPDATE; + return insn_len; + } + LOG_DIS("%d: jump.%d %d r%d r%d\n", __LINE__, size, + dc->opcode, dc->src, dc->dst); + t[0] = tcg_temp_new(); + t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len)); + crisv10_prepare_memaddr(dc, t[0], size); + gen_load(dc, env_btarget, t[0], 4, 0); + insn_len += crisv10_post_memaddr(dc, size); + cris_prepare_jmp(dc, JMP_INDIRECT); + dc->delayed_branch--; /* v10 has no dslot here. */ + tcg_temp_free(t[0]); + } + break; + + case CRISV10_IND_MOVEM_R_M: + LOG_DIS("movem_r_m pc=%x opcode=%d r%d r%d\n", + dc->pc, dc->opcode, dc->dst, dc->src); + dec10_movem_r_m(dc); + break; + case CRISV10_IND_MOVEM_M_R: + LOG_DIS("movem_m_r pc=%x opcode=%d\n", dc->pc, dc->opcode); + dec10_movem_m_r(dc); + break; + case CRISV10_IND_JUMP_R: + LOG_DIS("jmp pc=%x opcode=%d r%d r%d\n", + dc->pc, dc->opcode, dc->dst, dc->src); + tcg_gen_mov_tl(env_btarget, cpu_R[dc->src]); + t_gen_mov_preg_TN(dc, dc->dst, tcg_const_tl(dc->pc + insn_len)); + cris_prepare_jmp(dc, JMP_INDIRECT); + dc->delayed_branch--; /* v10 has no dslot here. */ + break; + case CRISV10_IND_MOVX: + insn_len = dec10_alux_m(env, dc, CC_OP_MOVE); + break; + case CRISV10_IND_ADDX: + insn_len = dec10_alux_m(env, dc, CC_OP_ADD); + break; + case CRISV10_IND_SUBX: + insn_len = dec10_alux_m(env, dc, CC_OP_SUB); + break; + case CRISV10_IND_CMPX: + insn_len = dec10_alux_m(env, dc, CC_OP_CMP); + break; + case CRISV10_IND_DIP: + insn_len = dec10_dip(env, dc); + break; + case CRISV10_IND_BCC_M: + + cris_cc_mask(dc, 0); + imm = cpu_ldsw_code(env, dc->pc + 2); + simm = (int16_t)imm; + simm += 4; + + LOG_DIS("bcc_m: b%s %x\n", cc_name(dc->cond), dc->pc + simm); + cris_prepare_cc_branch(dc, simm, dc->cond); + insn_len = 4; + break; + default: + LOG_DIS("ERROR pc=%x opcode=%d\n", dc->pc, dc->opcode); + cpu_abort(CPU(dc->cpu), "Unhandled opcode"); + break; + } + + return insn_len; +} + +static unsigned int crisv10_decoder(CPUCRISState *env, DisasContext *dc) +{ + unsigned int insn_len = 2; + + /* Load a halfword onto the instruction register. */ + dc->ir = cpu_lduw_code(env, dc->pc); + + /* Now decode it. */ + dc->opcode = EXTRACT_FIELD(dc->ir, 6, 9); + dc->mode = EXTRACT_FIELD(dc->ir, 10, 11); + dc->src = EXTRACT_FIELD(dc->ir, 0, 3); + dc->size = EXTRACT_FIELD(dc->ir, 4, 5); + dc->cond = dc->dst = EXTRACT_FIELD(dc->ir, 12, 15); + dc->postinc = EXTRACT_FIELD(dc->ir, 10, 10); + + dc->clear_prefix = 1; + + /* FIXME: What if this insn insn't 2 in length?? */ + if (dc->src == 15 || dc->dst == 15) + tcg_gen_movi_tl(cpu_R[15], dc->pc + 2); + + switch (dc->mode) { + case CRISV10_MODE_QIMMEDIATE: + insn_len = dec10_quick_imm(dc); + break; + case CRISV10_MODE_REG: + insn_len = dec10_reg(dc); + break; + case CRISV10_MODE_AUTOINC: + case CRISV10_MODE_INDIRECT: + insn_len = dec10_ind(env, dc); + break; + } + + if (dc->clear_prefix && dc->tb_flags & PFIX_FLAG) { + dc->tb_flags &= ~PFIX_FLAG; + tcg_gen_andi_tl(cpu_PR[PR_CCS], cpu_PR[PR_CCS], ~PFIX_FLAG); + if (dc->tb_flags != dc->tb->flags) { + dc->cpustate_changed = 1; + } + } + + /* CRISv10 locks out interrupts on dslots. */ + if (dc->delayed_branch == 2) { + cris_lock_irq(dc); + } + return insn_len; +} + +void cris_initialize_crisv10_tcg(void) +{ + int i; + + cpu_env = tcg_global_reg_new_ptr(TCG_AREG0, "env"); + tcg_ctx.tcg_env = cpu_env; + cc_x = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, cc_x), "cc_x"); + cc_src = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, cc_src), "cc_src"); + cc_dest = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, cc_dest), + "cc_dest"); + cc_result = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, cc_result), + "cc_result"); + cc_op = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, cc_op), "cc_op"); + cc_size = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, cc_size), + "cc_size"); + cc_mask = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, cc_mask), + "cc_mask"); + + env_pc = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, pc), + "pc"); + env_btarget = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, btarget), + "btarget"); + env_btaken = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, btaken), + "btaken"); + for (i = 0; i < 16; i++) { + cpu_R[i] = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, regs[i]), + regnames_v10[i]); + } + for (i = 0; i < 16; i++) { + cpu_PR[i] = tcg_global_mem_new(cpu_env, + offsetof(CPUCRISState, pregs[i]), + pregnames_v10[i]); + } +} |