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x86: fix endbr32 & endbr64 in #1129

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This commit is contained in:
Nguyen Anh Quynh 2018-12-20 02:54:44 +08:00
parent 0875112e73
commit 09822dd129
1 changed files with 8 additions and 9 deletions
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17
arch/X86/X86Disassembler.c
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@ -996,13 +996,14 @@ bool X86_getInstruction(csh ud, const uint8_t *code, size_t code_len,
}
return false;
case 4: {
unsigned char b1 = 0, b2 = 0, b3 = 0, b4 = 0;
if (handle->mode != CS_MODE_16) {
unsigned char b1 = 0, b2 = 0, b3 = 0, b4 = 0;
reader(&info, &b1, address);
reader(&info, &b2, address + 1);
reader(&info, &b3, address + 2);
reader(&info, &b4, address + 3);
reader(&info, &b1, address);
reader(&info, &b2, address + 1);
reader(&info, &b3, address + 2);
reader(&info, &b4, address + 3);
if (handle->mode & CS_MODE_64) {
if (b1 == 0xf3 && b2 == 0x0f && b3 == 0x1e && b4 == 0xfa) {
instr->Opcode = X86_ENDBR64;
instr->OpcodePub = X86_INS_ENDBR64;
@ -1014,9 +1015,7 @@ bool X86_getInstruction(csh ud, const uint8_t *code, size_t code_len,
instr->flat_insn->detail->x86.opcode[3] = b4;
}
return true;
}
} else if (handle->mode & CS_MODE_32) {
if (b1 == 0xf3 && b2 == 0x0f && b3 == 0x1e && b4 == 0xfb) {
} else if (b1 == 0xf3 && b2 == 0x0f && b3 == 0x1e && b4 == 0xfb) {
instr->Opcode = X86_ENDBR32;
instr->OpcodePub = X86_INS_ENDBR32;
strncpy(instr->assembly, "endbr32", 8);