#include "unicorn/unicorn.h" #include #include #define OK(x) {uc_err __err; if ((__err = x)) { fprintf(stderr, "%s", uc_strerror(__err)); assert(false); } } static void test_vmovdqu(void) { uc_engine *uc; int r_esi = 0x1234; int r_edi = 0x7890; uint64_t r_xmm0[2] = {0x08090a0b0c0d0e0f, 0x0001020304050607}; /* 128 bit at address esi (0x1234) this should not be read into xmm0 */ char mem_esi[] = { '\xE7', '\x1D', '\xA7', '\xE8', '\x88', '\xE4', '\x94', '\x40', '\x54', '\x74', '\x24', '\x97', '\x1F', '\x2E', '\xB6', '\x40' }; /* 128 bit at address edi (0x7890) this SHOULD be read into xmm0 */ char mem_edi[] = { '\xAD', '\xFA', '\x5C', '\x6D', '\x45', '\x4A', '\x93', '\x40', '\xD2', '\x00', '\xDE', '\x02', '\x89', '\xE8', '\x94', '\x40' }; /* vmovdqu xmm0, [edi] */ char code[] = { '\xC5', '\xFA', '\x6F', '\x07' }; /* initialize memory and run emulation */ OK(uc_open(UC_ARCH_X86, UC_MODE_32, &uc)); OK(uc_mem_map(uc, 0, 2 * 1024 * 1024, UC_PROT_ALL)); OK(uc_mem_write(uc, 0, code, sizeof(code) / sizeof(code[0]))); // initialize machine registers; OK(uc_reg_write(uc, UC_X86_REG_XMM0, &r_xmm0)); OK(uc_reg_write(uc, UC_X86_REG_ESI, &r_esi)); OK(uc_reg_write(uc, UC_X86_REG_EDI, &r_edi)); OK(uc_mem_write(uc, r_esi, mem_esi, sizeof(mem_esi) / sizeof(mem_esi[0]))); OK(uc_mem_write(uc, r_edi, mem_edi, sizeof(mem_edi) / sizeof(mem_edi[0]))); OK(uc_emu_start(uc, 0, sizeof(code) / sizeof(code[0]), 0, 0)); /* Read xmm0 after emulation */ OK(uc_reg_read(uc, UC_X86_REG_XMM0, &r_xmm0)); assert(0x4094e88902de00d2 == r_xmm0[0] && 0x40934a456d5cfaad == r_xmm0[1]); OK(uc_close(uc)); } /* TODO: Add more vex prefixed instructions Suggestions: vxorpd, vxorps, vandpd, ... */ int main(int argc, char **argv, char **envp) { test_vmovdqu(); return 0; }