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New feature: registers can be bulk saved/restored in an opaque blob

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Andrew Dutcher
2016-08-20 04:14:07 -07:00
parent 236b6e9085
commit 0ef2b5fd71
14 changed files with 94 additions and 0 deletions
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33
uc.c
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@ -1160,3 +1160,36 @@ uc_err uc_query(uc_engine *uc, uc_query_type type, size_t *result)
return UC_ERR_OK;
}
size_t cpu_regs_size(uc_arch arch, uc_mode mode);
size_t cpu_regs_size(uc_arch arch, uc_mode mode) {
// each of these constants is defined by offsetof(CPUXYZState, tlb_table)
// tbl_table is the first entry in the CPU_COMMON macro, so it marks the end
// of the interesting CPU registers
switch (arch) {
case UC_ARCH_M68K: return M68K_REGS_STORAGE_SIZE;
case UC_ARCH_X86: return X86_REGS_STORAGE_SIZE;
case UC_ARCH_ARM: return ARM_REGS_STORAGE_SIZE;
case UC_ARCH_ARM64: return ARM64_REGS_STORAGE_SIZE;
case UC_ARCH_MIPS: return mode & UC_MODE_MIPS64 ? MIPS64_REGS_STORAGE_SIZE : MIPS_REGS_STORAGE_SIZE;
case UC_ARCH_SPARC: return mode & UC_MODE_SPARC64 ? SPARC64_REGS_STORAGE_SIZE : SPARC_REGS_STORAGE_SIZE;
default: return 0;
}
}
UNICORN_EXPORT
void *uc_save_regstate(uc_engine *uc, void *buffer) {
size_t sz = cpu_regs_size(uc->arch, uc->mode);
if (!buffer) {
buffer = malloc(sz);
}
memcpy(buffer, uc->current_cpu->env_ptr, sz);
return buffer;
}
UNICORN_EXPORT
void uc_restore_regstate(uc_engine *uc, void *buffer) {
size_t sz = cpu_regs_size(uc->arch, uc->mode);
memcpy(uc->current_cpu->env_ptr, buffer, sz);
}