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Add support for emulating the move instruction: "mov r/m8, imm8".

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Reviewed by:	neel
This commit is contained in:
Tycho Nightingale 2014-06-26 17:15:41 +00:00
parent 4d8492c790
commit 896d1f7723
1 changed files with 15 additions and 0 deletions
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15
sys/amd64/vmm/vmm_instruction_emul.c
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@ -104,6 +104,12 @@ static const struct vie_op one_byte_opcodes[256] = {
.op_byte = 0x8B,
.op_type = VIE_OP_TYPE_MOV,
},
[0xC6] = {
/* XXX Group 11 extended opcode - not just MOV */
.op_byte = 0xC6,
.op_type = VIE_OP_TYPE_MOV,
.op_flags = VIE_OP_F_IMM8,
},
[0xC7] = {
.op_byte = 0xC7,
.op_type = VIE_OP_TYPE_MOV,
@ -310,6 +316,15 @@ emulate_mov(void *vm, int vcpuid, uint64_t gpa, struct vie *vie,
error = vie_update_register(vm, vcpuid, reg, val, size);
}
break;
case 0xC6:
/*
* MOV from imm8 to mem (ModRM:r/m)
* C6/0 mov r/m8, imm8
* REX + C6/0 mov r/m8, imm8
*/
size = 1;
error = memwrite(vm, vcpuid, gpa, vie->immediate, size, arg);
break;
case 0xC7:
/*
* MOV from imm32 to mem (ModRM:r/m)