diff options
Diffstat (limited to 'linux-user/ppc')
| -rw-r--r-- | linux-user/ppc/cpu_loop.c | 26 | ||||
| -rw-r--r-- | linux-user/ppc/elfload.c | 146 | ||||
| -rw-r--r-- | linux-user/ppc/target_elf.h | 62 | ||||
| -rw-r--r-- | linux-user/ppc/target_ptrace.h | 26 | ||||
| -rw-r--r-- | linux-user/ppc/target_syscall.h | 28 |
5 files changed, 247 insertions, 41 deletions
diff --git a/linux-user/ppc/cpu_loop.c b/linux-user/ppc/cpu_loop.c index 2a0efaffcd..22885ffd90 100644 --- a/linux-user/ppc/cpu_loop.c +++ b/linux-user/ppc/cpu_loop.c @@ -378,21 +378,31 @@ void cpu_loop(CPUPPCState *env) } } -void target_cpu_copy_regs(CPUArchState *env, target_pt_regs *regs) +void init_main_thread(CPUState *cs, struct image_info *info) { - int i; + CPUArchState *env = cpu_env(cs); + abi_ptr entry = info->entry; + + env->gpr[1] = info->start_stack; + +#ifdef TARGET_PPC64 + if (get_ppc64_abi(info) < 2) { + uint64_t val; + get_user_u64(val, entry + 8); + env->gpr[2] = val + info->load_bias; + get_user_u64(val, entry); + entry = val + info->load_bias; + } else { + env->gpr[12] = entry; /* r12 set to global entry address */ + } -#if defined(TARGET_PPC64) int flag = (env->insns_flags2 & PPC2_BOOKE206) ? MSR_CM : MSR_SF; #if defined(TARGET_ABI32) ppc_store_msr(env, env->msr & ~((target_ulong)1 << flag)); #else ppc_store_msr(env, env->msr | (target_ulong)1 << flag); #endif -#endif +#endif /* TARGET_PPC64 */ - env->nip = regs->nip; - for(i = 0; i < 32; i++) { - env->gpr[i] = regs->gpr[i]; - } + env->nip = entry; } diff --git a/linux-user/ppc/elfload.c b/linux-user/ppc/elfload.c new file mode 100644 index 0000000000..0d54da9803 --- /dev/null +++ b/linux-user/ppc/elfload.c @@ -0,0 +1,146 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include "qemu/osdep.h" +#include "qemu.h" +#include "loader.h" +#include "target_elf.h" + + +const char *get_elf_cpu_model(uint32_t eflags) +{ +#ifdef TARGET_PPC64 + return "POWER9"; +#else + return "750"; +#endif +} + +/* + * Feature masks for the Aux Vector Hardware Capabilities (AT_HWCAP). + * See arch/powerpc/include/asm/cputable.h. + */ +enum { + QEMU_PPC_FEATURE_32 = 0x80000000, + QEMU_PPC_FEATURE_64 = 0x40000000, + QEMU_PPC_FEATURE_601_INSTR = 0x20000000, + QEMU_PPC_FEATURE_HAS_ALTIVEC = 0x10000000, + QEMU_PPC_FEATURE_HAS_FPU = 0x08000000, + QEMU_PPC_FEATURE_HAS_MMU = 0x04000000, + QEMU_PPC_FEATURE_HAS_4xxMAC = 0x02000000, + QEMU_PPC_FEATURE_UNIFIED_CACHE = 0x01000000, + QEMU_PPC_FEATURE_HAS_SPE = 0x00800000, + QEMU_PPC_FEATURE_HAS_EFP_SINGLE = 0x00400000, + QEMU_PPC_FEATURE_HAS_EFP_DOUBLE = 0x00200000, + QEMU_PPC_FEATURE_NO_TB = 0x00100000, + QEMU_PPC_FEATURE_POWER4 = 0x00080000, + QEMU_PPC_FEATURE_POWER5 = 0x00040000, + QEMU_PPC_FEATURE_POWER5_PLUS = 0x00020000, + QEMU_PPC_FEATURE_CELL = 0x00010000, + QEMU_PPC_FEATURE_BOOKE = 0x00008000, + QEMU_PPC_FEATURE_SMT = 0x00004000, + QEMU_PPC_FEATURE_ICACHE_SNOOP = 0x00002000, + QEMU_PPC_FEATURE_ARCH_2_05 = 0x00001000, + QEMU_PPC_FEATURE_PA6T = 0x00000800, + QEMU_PPC_FEATURE_HAS_DFP = 0x00000400, + QEMU_PPC_FEATURE_POWER6_EXT = 0x00000200, + QEMU_PPC_FEATURE_ARCH_2_06 = 0x00000100, + QEMU_PPC_FEATURE_HAS_VSX = 0x00000080, + QEMU_PPC_FEATURE_PSERIES_PERFMON_COMPAT = 0x00000040, + + QEMU_PPC_FEATURE_TRUE_LE = 0x00000002, + QEMU_PPC_FEATURE_PPC_LE = 0x00000001, + + /* Feature definitions in AT_HWCAP2. */ + QEMU_PPC_FEATURE2_ARCH_2_07 = 0x80000000, /* ISA 2.07 */ + QEMU_PPC_FEATURE2_HAS_HTM = 0x40000000, /* Hardware Transactional Memory */ + QEMU_PPC_FEATURE2_HAS_DSCR = 0x20000000, /* Data Stream Control Register */ + QEMU_PPC_FEATURE2_HAS_EBB = 0x10000000, /* Event Base Branching */ + QEMU_PPC_FEATURE2_HAS_ISEL = 0x08000000, /* Integer Select */ + QEMU_PPC_FEATURE2_HAS_TAR = 0x04000000, /* Target Address Register */ + QEMU_PPC_FEATURE2_VEC_CRYPTO = 0x02000000, + QEMU_PPC_FEATURE2_HTM_NOSC = 0x01000000, + QEMU_PPC_FEATURE2_ARCH_3_00 = 0x00800000, /* ISA 3.00 */ + QEMU_PPC_FEATURE2_HAS_IEEE128 = 0x00400000, /* VSX IEEE Bin Float 128-bit */ + QEMU_PPC_FEATURE2_DARN = 0x00200000, /* darn random number insn */ + QEMU_PPC_FEATURE2_SCV = 0x00100000, /* scv syscall */ + QEMU_PPC_FEATURE2_HTM_NO_SUSPEND = 0x00080000, /* TM w/o suspended state */ + QEMU_PPC_FEATURE2_ARCH_3_1 = 0x00040000, /* ISA 3.1 */ + QEMU_PPC_FEATURE2_MMA = 0x00020000, /* Matrix-Multiply Assist */ +}; + +abi_ulong get_elf_hwcap(CPUState *cs) +{ + PowerPCCPU *cpu = POWERPC_CPU(cs); + uint32_t features = 0; + + /* + * We don't have to be terribly complete here; the high points are + * Altivec/FP/SPE support. Anything else is just a bonus. + */ +#define GET_FEATURE(flag, feature) \ + do { if (cpu->env.insns_flags & flag) { features |= feature; } } while (0) +#define GET_FEATURE2(flags, feature) \ + do { \ + if ((cpu->env.insns_flags2 & flags) == flags) { \ + features |= feature; \ + } \ + } while (0) + GET_FEATURE(PPC_64B, QEMU_PPC_FEATURE_64); + GET_FEATURE(PPC_FLOAT, QEMU_PPC_FEATURE_HAS_FPU); + GET_FEATURE(PPC_ALTIVEC, QEMU_PPC_FEATURE_HAS_ALTIVEC); + GET_FEATURE(PPC_SPE, QEMU_PPC_FEATURE_HAS_SPE); + GET_FEATURE(PPC_SPE_SINGLE, QEMU_PPC_FEATURE_HAS_EFP_SINGLE); + GET_FEATURE(PPC_SPE_DOUBLE, QEMU_PPC_FEATURE_HAS_EFP_DOUBLE); + GET_FEATURE(PPC_BOOKE, QEMU_PPC_FEATURE_BOOKE); + GET_FEATURE(PPC_405_MAC, QEMU_PPC_FEATURE_HAS_4xxMAC); + GET_FEATURE2(PPC2_DFP, QEMU_PPC_FEATURE_HAS_DFP); + GET_FEATURE2(PPC2_VSX, QEMU_PPC_FEATURE_HAS_VSX); + GET_FEATURE2((PPC2_PERM_ISA206 | PPC2_DIVE_ISA206 | PPC2_ATOMIC_ISA206 | + PPC2_FP_CVT_ISA206 | PPC2_FP_TST_ISA206), + QEMU_PPC_FEATURE_ARCH_2_06); + +#undef GET_FEATURE +#undef GET_FEATURE2 + + return features; +} + +abi_ulong get_elf_hwcap2(CPUState *cs) +{ + PowerPCCPU *cpu = POWERPC_CPU(cs); + uint32_t features = 0; + +#define GET_FEATURE(flag, feature) \ + do { if (cpu->env.insns_flags & flag) { features |= feature; } } while (0) +#define GET_FEATURE2(flag, feature) \ + do { if (cpu->env.insns_flags2 & flag) { features |= feature; } } while (0) + + GET_FEATURE(PPC_ISEL, QEMU_PPC_FEATURE2_HAS_ISEL); + GET_FEATURE2(PPC2_BCTAR_ISA207, QEMU_PPC_FEATURE2_HAS_TAR); + GET_FEATURE2((PPC2_BCTAR_ISA207 | PPC2_LSQ_ISA207 | PPC2_ALTIVEC_207 | + PPC2_ISA207S), QEMU_PPC_FEATURE2_ARCH_2_07 | + QEMU_PPC_FEATURE2_VEC_CRYPTO); + GET_FEATURE2(PPC2_ISA300, QEMU_PPC_FEATURE2_ARCH_3_00 | + QEMU_PPC_FEATURE2_DARN | QEMU_PPC_FEATURE2_HAS_IEEE128); + GET_FEATURE2(PPC2_ISA310, QEMU_PPC_FEATURE2_ARCH_3_1 | + QEMU_PPC_FEATURE2_MMA); + +#undef GET_FEATURE +#undef GET_FEATURE2 + + return features; +} + +void elf_core_copy_regs(target_elf_gregset_t *r, const CPUPPCState *env) +{ + for (int i = 0; i < ARRAY_SIZE(env->gpr); i++) { + r->pt.gpr[i] = tswapal(env->gpr[i]); + } + + r->pt.nip = tswapal(env->nip); + r->pt.msr = tswapal(env->msr); + r->pt.ctr = tswapal(env->ctr); + r->pt.link = tswapal(env->lr); + r->pt.xer = tswapal(cpu_read_xer(env)); + r->pt.ccr = tswapal(ppc_get_cr(env)); +} diff --git a/linux-user/ppc/target_elf.h b/linux-user/ppc/target_elf.h index 0616618854..22854cf52f 100644 --- a/linux-user/ppc/target_elf.h +++ b/linux-user/ppc/target_elf.h @@ -7,12 +7,64 @@ #ifndef PPC_TARGET_ELF_H #define PPC_TARGET_ELF_H -static inline const char *cpu_get_model(uint32_t eflags) -{ + +#include "target_ptrace.h" + +#define ELF_MACHINE PPC_ELF_MACHINE + #ifdef TARGET_PPC64 - return "POWER9"; +# define ELF_CLASS ELFCLASS64 +#else +# define ELF_CLASS ELFCLASS32 +# define EXSTACK_DEFAULT true +#endif + +#define HAVE_ELF_HWCAP 1 +#define HAVE_ELF_HWCAP2 1 +#define HAVE_ELF_CORE_DUMP 1 + +/* + * The size of 48 words is set in arch/powerpc/include/uapi/asm/elf.h. + * However PPC_ELF_CORE_COPY_REGS in arch/powerpc/include/asm/elf.h + * open-codes a memcpy from struct pt_regs, then zeros the rest. + */ +typedef struct target_elf_gregset_t { + union { + struct target_pt_regs pt; + abi_ulong reserved[48]; + }; +} target_elf_gregset_t; + +#ifndef TARGET_PPC64 +# define VDSO_HEADER "vdso-32.c.inc" +#elif TARGET_BIG_ENDIAN +# define VDSO_HEADER "vdso-64.c.inc" #else - return "750"; +# define VDSO_HEADER "vdso-64le.c.inc" #endif -} + +/* + * The requirements here are: + * - keep the final alignment of sp (sp & 0xf) + * - make sure the 32-bit value at the first 16 byte aligned position of + * AUXV is greater than 16 for glibc compatibility. + * AT_IGNOREPPC is used for that. + * - for compatibility with glibc ARCH_DLINFO must always be defined on PPC, + * even if DLINFO_ARCH_ITEMS goes to zero or is undefined. + */ +#define DLINFO_ARCH_ITEMS 5 +#define ARCH_DLINFO \ + do { \ + PowerPCCPU *cpu = POWERPC_CPU(thread_cpu); \ + /* \ + * Handle glibc compatibility: these magic entries must \ + * be at the lowest addresses in the final auxv. \ + */ \ + NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \ + NEW_AUX_ENT(AT_IGNOREPPC, AT_IGNOREPPC); \ + NEW_AUX_ENT(AT_DCACHEBSIZE, cpu->env.dcache_line_size); \ + NEW_AUX_ENT(AT_ICACHEBSIZE, cpu->env.icache_line_size); \ + NEW_AUX_ENT(AT_UCACHEBSIZE, 0); \ + } while (0) + #endif diff --git a/linux-user/ppc/target_ptrace.h b/linux-user/ppc/target_ptrace.h new file mode 100644 index 0000000000..df77bfde73 --- /dev/null +++ b/linux-user/ppc/target_ptrace.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#ifndef PPC_TARGET_PTRACE_H +#define PPC_TARGET_PTRACE_H + +struct target_pt_regs { + abi_ulong gpr[32]; + abi_ulong nip; + abi_ulong msr; + abi_ulong orig_gpr3; /* Used for restarting system calls */ + abi_ulong ctr; + abi_ulong link; + abi_ulong xer; + abi_ulong ccr; +#if defined(TARGET_PPC64) + abi_ulong softe; +#else + abi_ulong mq; /* 601 only (not used at present) */ +#endif + abi_ulong trap; /* Reason for being here */ + abi_ulong dar; /* Fault registers */ + abi_ulong dsisr; + abi_ulong result; /* Result of a system call */ +}; + +#endif /* PPC_TARGET_PTRACE_H */ diff --git a/linux-user/ppc/target_syscall.h b/linux-user/ppc/target_syscall.h index 77b36d0b46..976b4bb7e9 100644 --- a/linux-user/ppc/target_syscall.h +++ b/linux-user/ppc/target_syscall.h @@ -20,34 +20,6 @@ #ifndef PPC_TARGET_SYSCALL_H #define PPC_TARGET_SYSCALL_H -/* XXX: ABSOLUTELY BUGGY: - * for now, this is quite just a cut-and-paste from i386 target... - */ - -/* default linux values for the selectors */ -#define __USER_DS (1) - -struct target_pt_regs { - abi_ulong gpr[32]; - abi_ulong nip; - abi_ulong msr; - abi_ulong orig_gpr3; /* Used for restarting system calls */ - abi_ulong ctr; - abi_ulong link; - abi_ulong xer; - abi_ulong ccr; -#if defined(TARGET_PPC64) - abi_ulong softe; -#else - abi_ulong mq; /* 601 only (not used at present) */ -#endif - /* Used on APUS to hold IPL value. */ - abi_ulong trap; /* Reason for being here */ - abi_ulong dar; /* Fault registers */ - abi_ulong dsisr; - abi_ulong result; /* Result of a system call */ -}; - /* ioctls */ struct target_revectored_struct { abi_ulong __map[8]; /* 256 bits */ |