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Fix x86 CPUID

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This commit is contained in:
lazymio
2021-12-22 23:39:41 +01:00
parent 3184d3fcdf
commit ef6f8a2427
2 changed files with 322 additions and 0 deletions
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25
tests/unit/test_x86.c
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@ -632,6 +632,30 @@ static void test_x86_hook_cpuid()
OK(uc_close(uc));
}
static void test_x86_486_cpuid(void)
{
uc_engine *uc;
uint32_t eax;
uint32_t ebx;
char code[] = {0x31, 0xC0, 0x0F, 0xA2}; // XOR EAX EAX; CPUID
OK(uc_open(UC_ARCH_X86, UC_MODE_32, &uc));
OK(uc_ctl_set_cpu_model(uc, UC_CPU_X86_486));
OK(uc_mem_map(uc, 0, 4 * 1024, UC_PROT_ALL));
OK(uc_mem_write(uc, 0, code, sizeof(code) / sizeof(code[0])));
OK(uc_emu_start(uc, 0, sizeof(code) / sizeof(code[0]), 0, 0));
/* Read eax after emulation */
OK(uc_reg_read(uc, UC_X86_REG_EAX, &eax));
OK(uc_reg_read(uc, UC_X86_REG_EBX, &ebx));
TEST_CHECK(eax != 0);
TEST_CHECK(ebx == 0x756e6547); // magic string "Genu" for intel cpu
OK(uc_close(uc));
}
// This is a regression bug.
static void test_x86_clear_tb_cache()
{
@ -870,6 +894,7 @@ TEST_LIST = {{"test_x86_in", test_x86_in},
{"test_x86_mmio_uc_mem_rw", test_x86_mmio_uc_mem_rw},
{"test_x86_sysenter", test_x86_sysenter},
{"test_x86_hook_cpuid", test_x86_hook_cpuid},
{"test_x86_486_cpuid", test_x86_486_cpuid},
{"test_x86_clear_tb_cache", test_x86_clear_tb_cache},
{"test_x86_clear_empty_tb", test_x86_clear_empty_tb},
{"test_x86_hook_tcg_op", test_x86_hook_tcg_op},