return 0;
}
-static int get_opcode(qx86_insn *inst);
+static int get_opcode(qx86_insn *inst, struct guest_info *core);
static int qx86_register_to_v3_reg(struct guest_info * info, int qx86_reg,
addr_t * v3_reg, uint_t * reg_len);
-static int decode_string_op(struct guest_info * core,
- const qx86_insn * qx86_inst, struct x86_instr * instr)
-{
- int status = 0;
- PrintDebug(info->vm_info, info, "String operation\n");
-
- if (instr->prefixes.rep == 1) {
- uint64_t a_mask = ~(~0ULL <<
- (QX86_SIZE_OCTETS(qx86_inst->attributes.addressSize) * 8));
-
- instr->str_op_length = core->vm_regs.rcx & a_mask;
- } else {
- instr->str_op_length = 1;
- }
-
-
-
- if (instr->op_type == V3_OP_MOVS) {
- instr->num_operands = 2;
-
- if((status = qx86_calculate_linear_address(qx86_inst, 0,
- (qx86_uint64*)&instr->dst_operand.operand)) != QX86_SUCCESS) {
- PrintError(info->vm_info, info, "Could not get destination memory operand: "
- "qx86_calculate_linear_address: %d\n", status);
- return -1;
- }
-
- instr->dst_operand.type = MEM_OPERAND;
- instr->dst_operand.size = qx86_inst->operands[0].size;
-
-
- if((status = qx86_calculate_linear_address(qx86_inst, 1,
- (qx86_uint64*)&instr->src_operand.operand)) != QX86_SUCCESS) {
- PrintError(info->vm_info, info, "Could not get source memory operand: "
- "qx86_calculate_linear_address: %d\n", status);
- return -1;
- }
-
- instr->src_operand.type = MEM_OPERAND;
- instr->src_operand.size = qx86_inst->operands[1].size;
-
- instr->dst_operand.write = 1;
- instr->src_operand.read = 1;
-
-
- } else if (instr->op_type == V3_OP_STOS) {
- instr->num_operands = 2;
-
- if((status = qx86_calculate_linear_address(qx86_inst, 0,
- (qx86_uint64*)&instr->dst_operand.operand)) != QX86_SUCCESS) {
- PrintError(info->vm_info, info, "Could not get destination memory operand: "
- "qx86_calculate_linear_address: %d\n", status);
- return -1;
- }
-
- instr->dst_operand.type = MEM_OPERAND;
- instr->dst_operand.size = qx86_inst->operands[0].size;
-
- // STOS reads from rax
- qx86_register_to_v3_reg(core,
- qx86_inst->operands[1].u.r.rindex,
- &(instr->src_operand.operand), &(instr->src_operand.size));
- instr->src_operand.type = REG_OPERAND;
-
- instr->src_operand.read = 1;
- instr->dst_operand.write = 1;
-
-
-
- } else {
- PrintError(info->vm_info, info, "Unhandled String OP\n");
- return -1;
- }
-
-
-#ifdef V3_CONFIG_DEBUG_DECODER
- V3_Print(info->vm_info, info, "Decoding Instr at %p\n", (void *)core->rip);
- v3_print_instr(instr);
- V3_Print(info->vm_info, info, "CS DB FLag=%x\n", core->segments.cs.db);
-#endif
-
-
- return 0;
-}
-
static int callback(void *data, int rindex, int subreg, unsigned char *value) {
void* reg_addr = 0;
uint_t reg_size;
PrintError(info->vm_info, info, "Callback doesn't know how to give flags.\n");
return 0;
case QX86_SUBREG_NONE: {
- switch(qx86_rtab[rindex].size) {
+ switch(qx86_rinfo(rindex)->size) {
case 1: *(uint8_t* )value = *(uint8_t* )reg_addr; break;
case 2: *(uint16_t*)value = *(uint16_t*)reg_addr; break;
case 4: *(uint32_t*)value = *(uint32_t*)reg_addr; break;
if (v3_reg_type == -1) {
PrintError(info->vm_info, info, "Operand %d is an Unhandled Operand: %s\n", op_num,
- qx86_rtab[qx86_op->u.r.rindex].name);
+ qx86_rinfo(qx86_op->u.r.rindex)->name);
v3_op->type = INVALID_OPERAND;
return -1;
} else if (v3_reg_type == SEGMENT_REGISTER) {
instr->instr_length = qx86_inst.rawSize;
- if ((instr->op_type = get_opcode(&qx86_inst)) == V3_INVALID_OP) {
+ if ((instr->op_type = get_opcode(&qx86_inst, info)) == V3_INVALID_OP) {
PrintError(info->vm_info, info, "Could not get opcode. (mnemonic=%s)\n",
- qx86_mtab[qx86_inst.mnemonic].name);
+ qx86_minfo(qx86_inst.mnemonic)->name);
return -1;
}
if(instr->op_type == V3_OP_MOVS || instr->op_type == V3_OP_STOS) {
instr->is_str_op = 1;
- return decode_string_op(info, &qx86_inst, instr);
+ if (instr->prefixes.rep == 1) {
+ uint64_t a_mask = (~0ULL >>
+ (64 - QX86_SIZE_OCTETS(qx86_inst.attributes.addressSize) * 8));
+
+ instr->str_op_length = info->vm_regs.rcx & a_mask;
+ } else {
+ instr->str_op_length = 1;
+ }
} else {
instr->is_str_op = 0;
instr->str_op_length = 0;
return 0;
}
-static int get_opcode(qx86_insn *inst) {
+static int get_opcode(qx86_insn *inst, struct guest_info *core) {
switch (inst->mnemonic) {
#define IS_CR(op) inst->operands[op].ot == QX86_OPERAND_TYPE_REGISTER && \
- qx86_rtab[inst->operands[op].u.r.rindex].rclass == QX86_RCLASS_CREG
+ qx86_rinfo(inst->operands[op].u.r.rindex)->rclass == QX86_RCLASS_CREG
/* MOV cases */
case QX86_MNEMONIC_MOV: {
if(IS_CR(1))
return V3_OP_MOVCR2;
- PrintError(info->vm_info, info, "Bad operand types for MOV: %d %d\n", inst->operands[0].ot,
+ PrintError(core->vm_info, core, "Bad operand types for MOV: %d %d\n", inst->operands[0].ot,
inst->operands[1].ot);
return V3_INVALID_OP;
}
static int qx86_register_to_v3_reg(struct guest_info * info, int qx86_reg,
addr_t * v3_reg, uint_t * reg_len) {
- PrintDebug(info->vm_info, info, "qx86 Register: %s\n", qx86_rtab[qx86_reg].name);
+ PrintDebug(info->vm_info, info, "qx86 Register: %s\n", qx86_rinfo(qx86_reg)->name);
switch (qx86_reg) {
case QX86_REGISTER_INVALID:
*reg_len = 4;
return CTRL_REGISTER;
case QX86_REGISTER_CR8:
- *v3_reg = (addr_t)&(info->ctrl_regs.cr8);
+ *v3_reg = (addr_t)&(info->ctrl_regs.apic_tpr);
*reg_len = 4;
return CTRL_REGISTER;
