diff options
Diffstat (limited to 'linux-user/xtensa')
| -rw-r--r-- | linux-user/xtensa/cpu_loop.c | 22 | ||||
| -rw-r--r-- | linux-user/xtensa/elfload.c | 31 | ||||
| -rw-r--r-- | linux-user/xtensa/target_elf.h | 18 | ||||
| -rw-r--r-- | linux-user/xtensa/target_ptrace.h | 22 | ||||
| -rw-r--r-- | linux-user/xtensa/target_syscall.h | 35 |
5 files changed, 83 insertions, 45 deletions
diff --git a/linux-user/xtensa/cpu_loop.c b/linux-user/xtensa/cpu_loop.c index c0fcf743e7..43a194fc4a 100644 --- a/linux-user/xtensa/cpu_loop.c +++ b/linux-user/xtensa/cpu_loop.c @@ -238,12 +238,22 @@ void cpu_loop(CPUXtensaState *env) } } -void target_cpu_copy_regs(CPUArchState *env, target_pt_regs *regs) +void init_main_thread(CPUState *cs, struct image_info *info) { - int i; - for (i = 0; i < 16; ++i) { - env->regs[i] = regs->areg[i]; + CPUArchState *env = cpu_env(cs); + + env->sregs[WINDOW_BASE] = 0; + env->sregs[WINDOW_START] = 1; + env->regs[1] = info->start_stack; + env->pc = info->entry; + + if (info_is_fdpic(info)) { + env->regs[4] = info->loadmap_addr; + env->regs[5] = info->interpreter_loadmap_addr; + if (info->interpreter_loadmap_addr) { + env->regs[6] = info->interpreter_pt_dynamic_addr; + } else { + env->regs[6] = info->pt_dynamic_addr; + } } - env->sregs[WINDOW_START] = regs->windowstart; - env->pc = regs->pc; } diff --git a/linux-user/xtensa/elfload.c b/linux-user/xtensa/elfload.c new file mode 100644 index 0000000000..68aeed855f --- /dev/null +++ b/linux-user/xtensa/elfload.c @@ -0,0 +1,31 @@ +/* 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) +{ + return XTENSA_DEFAULT_CPU_MODEL; +} + +void elf_core_copy_regs(target_elf_gregset_t *r, const CPUXtensaState *env) +{ + r->pt.pc = tswap32(env->pc); + r->pt.ps = tswap32(env->sregs[PS] & ~PS_EXCM); + r->pt.lbeg = tswap32(env->sregs[LBEG]); + r->pt.lend = tswap32(env->sregs[LEND]); + r->pt.lcount = tswap32(env->sregs[LCOUNT]); + r->pt.sar = tswap32(env->sregs[SAR]); + r->pt.windowstart = tswap32(env->sregs[WINDOW_START]); + r->pt.windowbase = tswap32(env->sregs[WINDOW_BASE]); + r->pt.threadptr = tswap32(env->uregs[THREADPTR]); + + xtensa_sync_phys_from_window((CPUXtensaState *)env); + + for (unsigned i = 0; i < env->config->nareg; ++i) { + r->pt.a[i] = tswap32(env->phys_regs[i]); + } +} diff --git a/linux-user/xtensa/target_elf.h b/linux-user/xtensa/target_elf.h index a9a3fabd89..1bf8f2a14a 100644 --- a/linux-user/xtensa/target_elf.h +++ b/linux-user/xtensa/target_elf.h @@ -8,9 +8,19 @@ #ifndef XTENSA_TARGET_ELF_H #define XTENSA_TARGET_ELF_H -static inline const char *cpu_get_model(uint32_t eflags) -{ - return XTENSA_DEFAULT_CPU_MODEL; -} +#include "target_ptrace.h" + +#define ELF_CLASS ELFCLASS32 +#define ELF_MACHINE EM_XTENSA + +#define HAVE_ELF_CORE_DUMP 1 + +/* + * See linux kernel: arch/xtensa/include/asm/elf.h, where elf_gregset_t + * is mapped to struct user_pt_regs via typedef and sizeof. + */ +typedef struct target_elf_gregset_t { + struct target_user_pt_regs pt; +} target_elf_gregset_t; #endif diff --git a/linux-user/xtensa/target_ptrace.h b/linux-user/xtensa/target_ptrace.h new file mode 100644 index 0000000000..32443d0dee --- /dev/null +++ b/linux-user/xtensa/target_ptrace.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#ifndef XTENSA_TARGET_PTRACE_H +#define XTENSA_TARGET_PTRACE_H + +/* See arch/xtensa/include/uapi/asm/ptrace.h. */ +struct target_user_pt_regs { + uint32_t pc; + uint32_t ps; + uint32_t lbeg; + uint32_t lend; + uint32_t lcount; + uint32_t sar; + uint32_t windowstart; + uint32_t windowbase; + uint32_t threadptr; + uint32_t syscall; + uint32_t reserved[6 + 48]; + uint32_t a[64]; +}; + +#endif /* XTENSA_TARGET_PTRACE_H */ diff --git a/linux-user/xtensa/target_syscall.h b/linux-user/xtensa/target_syscall.h index afc86a153f..5d4352a4d1 100644 --- a/linux-user/xtensa/target_syscall.h +++ b/linux-user/xtensa/target_syscall.h @@ -8,41 +8,6 @@ #define MMAP_SHIFT TARGET_PAGE_BITS -typedef uint32_t xtensa_reg_t; -typedef struct { -} xtregs_opt_t; /* TODO */ - -struct target_pt_regs { - xtensa_reg_t pc; /* 4 */ - xtensa_reg_t ps; /* 8 */ - xtensa_reg_t depc; /* 12 */ - xtensa_reg_t exccause; /* 16 */ - xtensa_reg_t excvaddr; /* 20 */ - xtensa_reg_t debugcause; /* 24 */ - xtensa_reg_t wmask; /* 28 */ - xtensa_reg_t lbeg; /* 32 */ - xtensa_reg_t lend; /* 36 */ - xtensa_reg_t lcount; /* 40 */ - xtensa_reg_t sar; /* 44 */ - xtensa_reg_t windowbase; /* 48 */ - xtensa_reg_t windowstart; /* 52 */ - xtensa_reg_t syscall; /* 56 */ - xtensa_reg_t icountlevel; /* 60 */ - xtensa_reg_t scompare1; /* 64 */ - xtensa_reg_t threadptr; /* 68 */ - - /* Additional configurable registers that are used by the compiler. */ - xtregs_opt_t xtregs_opt; - - /* Make sure the areg field is 16 bytes aligned. */ - int align[0] __attribute__ ((aligned(16))); - - /* current register frame. - * Note: The ESF for kernel exceptions ends after 16 registers! - */ - xtensa_reg_t areg[16]; -}; - #define TARGET_MCL_CURRENT 1 #define TARGET_MCL_FUTURE 2 #define TARGET_MCL_ONFAULT 4 |