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exec.c
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#include "ebcvm.h"
#define DECODE_INDEX(bits) \
static int##bits##_t decode_index##bits(uint##bits##_t index) { \
bool s = index >> (bits - 1); \
uint8_t r = bits - 4; \
uint8_t a = (index & ((uint##bits##_t)0x7 << r)) >> r; \
uint8_t nl = a * (bits / 8); \
uint8_t cl = bits - (4 + nl); \
uint##bits##_t nm = 0; \
uint##bits##_t cm = 0; \
if (4 + cl != bits) \
nm = UINT##bits##_MAX >> (4 + cl); \
if (4 + nl != bits) \
cm = (UINT##bits##_MAX >> (4 + nl)) << nl; \
int##bits##_t n = (s ? -1 : 1) * (index & nm); \
int##bits##_t c = (s ? -1 : 1) * ((index & cm) >> nl); \
int##bits##_t offset = (c + n * ARCH_BYTES); \
return offset; \
}
#define OP(bits) \
typedef struct op##bits { \
uint##bits##_t op1; \
uint##bits##_t op2; \
uint64_t op1val; \
uint64_t op2val; \
} op##bits;
#define READ_OP(bits) \
static op##bits *read_op##bits(vm *_vm, inst *_inst) { \
op##bits *_op##bits = malloc(sizeof(op##bits)); \
_op##bits->op2val = _vm->regs->regs[_inst->operand2]; \
if (_inst->op2_indirect) { \
if (_inst->is_imm) { \
_op##bits->op2 = read_mem##bits(_vm->mem, \
_op##bits->op2val + decode_index16(_inst->imm)); \
} else \
_op##bits->op2 = read_mem##bits(_vm->mem, _op##bits->op2val); \
} else { \
if (_inst->is_imm) \
_op##bits->op2 = _op##bits->op2val + _inst->imm; \
else \
_op##bits->op2 = _op##bits->op2val; \
} \
_op##bits->op1val = _vm->regs->regs[_inst->operand1]; \
if (_inst->op1_indirect) \
_op##bits->op1 = read_mem##bits(_vm->mem, _op##bits->op1val); \
else \
_op##bits->op1 = _op##bits->op1val; \
return _op##bits; \
}
#define EXEC_OP(type, name, op) \
static type op_##name(type op1, type op2) { \
if (!strcmp(#name, "div") || !strcmp(#name, "divu") || \
!strcmp(#name, "mod") || !strcmp(#name, "modu")) \
if (op2 == 0) \
raise_except(DIV0, "devide by 0", __FILE__, __LINE__); \
return op; \
} \
static vm *exec_##name(vm *_vm, inst *_inst) { \
if (_inst->is_64op) { \
op64 *_op64 = read_op64(_vm, _inst); \
type _op = op_##name(_op64->op1, _op64->op2); \
if (_inst->op1_indirect) \
write_mem64(_vm->mem, _op64->op1val, _op); \
else \
_vm->regs->regs[_inst->operand1] = _op; \
free(_op64); \
} else { \
op32 *_op32 = read_op32(_vm, _inst); \
type _op = op_##name(_op32->op1, _op32->op2); \
if (_inst->op1_indirect) \
write_mem32(_vm->mem, _op32->op1val, _op); \
else { \
_vm->regs->regs[_inst->operand1] = _op; \
_vm->regs->regs[_inst->operand1] &= ~0xffffffff00000000; \
} \
free(_op32); \
} \
return _vm; \
}
DECODE_INDEX(16);
DECODE_INDEX(32);
DECODE_INDEX(64);
OP(32);
OP(64);
READ_OP(32);
READ_OP(64);
EXEC_OP(int64_t, add, op1 + op2);
EXEC_OP(int64_t, sub, op1 - op2);
EXEC_OP(int64_t, mul, op1 * op2);
EXEC_OP(int64_t, div, op1 / op2);
EXEC_OP(int64_t, mod, op1 % op2);
EXEC_OP(int64_t, and, op1 & op2);
EXEC_OP(int64_t, or, op1 | op2);
EXEC_OP(int64_t, xor, op1 ^ op2);
EXEC_OP(uint64_t, shl, op1 << op2);
EXEC_OP(uint64_t, shr, op1 >> op2);
EXEC_OP(int64_t, ashr, op1 >> op2);
EXEC_OP(int64_t, neg, -1 * op2);
EXEC_OP(int64_t, not, ~op2);
EXEC_OP(uint64_t, mulu, op1 * op2);
EXEC_OP(uint64_t, divu, op1 / op2);
EXEC_OP(uint64_t, modu, op1 % op2);
typedef vm *(*arith_op)(vm *, inst *);
arith_op arith_ops[] = {
exec_add,
exec_sub,
exec_mul,
exec_div,
exec_mod,
exec_and,
exec_or,
exec_xor,
exec_shl,
exec_shr,
exec_ashr,
exec_neg,
exec_not,
exec_mulu,
exec_divu,
exec_modu,
};
static vm *exec_break(vm *_vm, inst *_inst) {
switch (_inst->break_code) {
case 1:
_vm->regs->regs[R7] = (MAJOR_VERSION << 16) + MINOR_VERSION;
break;
case 3:
/* FIXME: debug breakpoint */
raise_except(DEBUG, "breakpoint", __FILE__, __LINE__);
break;
case 4:
/* FIXME: system call */
break;
case 5:
/* FIXME: create thunk */
break;
case 6:
_vm->compiler_version = _vm->regs->regs[R7];
break;
default:
raise_except(BADBREAK, "bad break", __FILE__, __LINE__);
}
return _vm;
}
static vm *exec_jmp(vm *_vm, inst *_inst) {
bool do_jmp = false;
if (_inst->is_jmp64) {
if (!_inst->is_jmp_imm)
raise_except(ENCODE, "JMP", __FILE__, __LINE__);
if (_inst->is_cond) {
if (_inst->is_cs && (_vm->regs->regs[FLAGS] & 0x01))
do_jmp = true;
else if (!_inst->is_cs && !(_vm->regs->regs[FLAGS] & 0x01))
do_jmp = true;
} else
do_jmp = true;
if (do_jmp) {
if (_inst->jmp_imm % 2)
raise_except(ALIGN, "alignemnt check", __FILE__, __LINE__);
if (_inst->is_rel) {
/* XXX: JMP64 only supports immediate */
_vm->regs->regs[IP] += 10 + _inst->jmp_imm;
} else
_vm->regs->regs[IP] = _inst->jmp_imm;
}
} else {
if (_inst->is_cond) {
if (_inst->is_cs && (_vm->regs->regs[FLAGS] & 0x01))
do_jmp = true;
else if (!_inst->is_cs && !(_vm->regs->regs[FLAGS] & 0x01))
do_jmp = true;
} else
do_jmp = true;
if (do_jmp) {
uint64_t op1;
if (_inst->op1_indirect) {
if (_inst->is_jmp_imm) {
op1 = read_mem32(_vm->mem,
_vm->regs->regs[_inst->operand1]
+ decode_index32((uint32_t)_inst->jmp_imm));
} else
op1 = read_mem32(_vm->mem,
_vm->regs->regs[_inst->operand1]);
} else {
if (_inst->operand1 == R0)
op1 = 0;
else
op1 = _vm->regs->regs[_inst->operand1];
if (_inst->is_jmp_imm)
op1 += _inst->jmp_imm;
}
if (op1 % 2)
raise_except(ALIGN, "alignemnt check", __FILE__, __LINE__);
if (_inst->is_rel) {
size_t inst_len = _inst->is_jmp_imm ? 6 : 2;
_vm->regs->regs[IP] += inst_len + op1;
} else
_vm->regs->regs[IP] = op1;
}
}
if (!do_jmp)
_vm->regs->regs[IP] += _inst->inst_len;
return _vm;
}
static vm *exec_jmp8(vm *_vm, inst *_inst) {
bool do_jmp = false;
if (_inst->is_cond) {
if (_inst->is_cs && (_vm->regs->regs[FLAGS] & 0x01))
do_jmp = true;
else if (!_inst->is_cs && !(_vm->regs->regs[FLAGS] & 0x01))
do_jmp = true;
} else
do_jmp = true;
if (do_jmp)
_vm->regs->regs[IP] += _inst->inst_len + (int8_t)_inst->jmp_imm * 2;
else
_vm->regs->regs[IP] += _inst->inst_len;
return _vm;
}
static vm *exec_call(vm *_vm, inst *_inst) {
size_t inst_len = _inst->is_jmp64 ? 10 : (_inst->is_jmp_imm ? 6 : 2);
/* XXX: PUSH64 return address */
_vm->regs->regs[R0] -= 16;
write_mem64(_vm->mem, _vm->regs->regs[R0],
_vm->regs->regs[IP] + inst_len);
int64_t op = 0;
if (_inst->is_jmp64) {
if (!_inst->is_jmp_imm)
raise_except(ENCODE, "CALL", __FILE__, __LINE__);
if (_inst->is_rel)
raise_except(ENCODE, "CALL", __FILE__, __LINE__);
op = (uint64_t)_inst->jmp_imm;
if (_inst->is_native)
raise_excall(op, _vm);
else
_vm->regs->regs[IP] = op;
} else {
if (_inst->operand1 != R0) {
if (_inst->op1_indirect) {
uint64_t addr = _vm->regs->regs[_inst->operand1];
if (_inst->is_jmp_imm)
addr += decode_index32(_inst->jmp_imm);
op = read_mem64(_vm->mem, addr);
} else {
op = _vm->regs->regs[_inst->operand1];
if (_inst->is_jmp_imm)
op += (int32_t)_inst->jmp_imm;
}
} else
op = (int32_t)_inst->jmp_imm;
if (_inst->is_rel) {
op += _vm->regs->regs[IP];
if (!_inst->is_native)
op += inst_len;
}
}
if (_inst->is_native)
raise_excall((uint64_t)op, _vm);
else
_vm->regs->regs[IP] = (uint64_t)op;
return _vm;
}
static vm *exec_extnd(vm *_vm, inst *_inst) {
uint64_t op2;
if (_inst->opcode == EXTNDB) {
if (_inst->op2_indirect) {
if (_inst->is_imm) {
op2 = (uint8_t)read_mem8(_vm->mem,
_vm->regs->regs[_inst->operand2]
+ decode_index16(_inst->imm));
} else {
op2 = (uint8_t)read_mem8(_vm->mem,
_vm->regs->regs[_inst->operand2]);
}
} else {
if (_inst->is_imm) {
op2 = (uint8_t)_vm->regs->regs[_inst->operand2];
op2 += (int16_t)_inst->imm;
} else
op2 = (uint8_t)(_vm->regs->regs[_inst->operand2]);
}
} else if (_inst->opcode == EXTNDW) {
if (_inst->op2_indirect) {
if (_inst->is_imm) {
op2 = (uint16_t)read_mem16(_vm->mem,
_vm->regs->regs[_inst->operand2]
+ decode_index16(_inst->imm));
} else {
op2 = (uint16_t)read_mem16(_vm->mem,
_vm->regs->regs[_inst->operand2]);
}
} else {
if (_inst->is_imm) {
op2 = (uint16_t)_vm->regs->regs[_inst->operand2];
op2 += (int16_t)_inst->imm;
} else
op2 = (uint16_t)(_vm->regs->regs[_inst->operand2]);
}
} else if (_inst->opcode == EXTNDD) {
if (_inst->op2_indirect) {
if (_inst->is_imm) {
op2 = (uint32_t)read_mem32(_vm->mem,
_vm->regs->regs[_inst->operand2]
+ decode_index16(_inst->imm));
} else {
op2 = (uint32_t)read_mem32(_vm->mem,
_vm->regs->regs[_inst->operand2]);
}
} else {
if (_inst->is_imm) {
op2 = (uint32_t)_vm->regs->regs[_inst->operand2];
op2 += (int16_t)_inst->imm;
} else
op2 = (uint32_t)(_vm->regs->regs[_inst->operand2]);
}
} else
raise_except(ENCODE, "EXTND", __FILE__, __LINE__);
if (_inst->is_64op) {
if (_inst->op1_indirect) {
write_mem64(_vm->mem,
_vm->regs->regs[_inst->operand1], (int64_t)op2);
} else
_vm->regs->regs[_inst->operand1] = (int64_t)op2;
} else {
if (_inst->op1_indirect) {
write_mem32(_vm->mem,
_vm->regs->regs[_inst->operand1], (int32_t)op2);
} else
_vm->regs->regs[_inst->operand1] = (int32_t)op2;
}
return _vm;
}
static vm *exec_cmp(vm *_vm, inst *_inst) {
if (_inst->is_64op) {
uint64_t op2;
if (_inst->op2_indirect) {
if (_inst->is_imm) {
op2 = read_mem64(_vm->mem,
_vm->regs->regs[_inst->operand2]
+ decode_index16(_inst->imm));
} else {
op2 = read_mem64(_vm->mem,
_vm->regs->regs[_inst->operand2]);
}
} else {
if (_inst->is_imm)
op2 = _vm->regs->regs[_inst->operand2] + _inst->imm;
else
op2 = _vm->regs->regs[_inst->operand2];
}
uint64_t op1 = _vm->regs->regs[_inst->operand1];
switch (_inst->opcode) {
case CMPeq:
if ((int64_t)op1 == (int64_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPlte:
if ((int64_t)op1 <= (int64_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPgte:
if ((int64_t)op1 >= (int64_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPulte:
if ((uint64_t)op1 <= (uint64_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPugte:
if ((uint64_t)op1 >= (uint64_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
default:
raise_except(OPCODE, "CMP", __FILE__, __LINE__);
}
} else {
uint32_t op2;
if (_inst->op2_indirect) {
if (_inst->is_imm) {
op2 = read_mem32(_vm->mem,
_vm->regs->regs[_inst->operand2]
+ decode_index16(_inst->imm));
} else {
op2 = read_mem32(_vm->mem,
_vm->regs->regs[_inst->operand2]);
}
} else {
if (_inst->is_imm)
op2 = _vm->regs->regs[_inst->operand2] + _inst->imm;
else
op2 = _vm->regs->regs[_inst->operand2];
}
uint32_t op1 = _vm->regs->regs[_inst->operand1];
switch (_inst->opcode) {
case CMPeq:
if ((int32_t)op1 == (int32_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPlte:
if ((int32_t)op1 <= (int32_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPgte:
if ((int32_t)op1 >= (int32_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPulte:
if ((uint32_t)op1 <= (uint32_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPugte:
if ((uint32_t)op1 >= (uint32_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
default:
raise_except(OPCODE, "CMP", __FILE__, __LINE__);
}
}
return _vm;
}
static vm *exec_cmpi(vm *_vm, inst *_inst) {
if (_inst->mov_len == 8) {
uint64_t op1, op2;
if (_inst->op1_indirect) {
if (_inst->is_opt_idx) {
op1 = read_mem64(_vm->mem,
_vm->regs->regs[_inst->operand1]
+ decode_index16(_inst->opt_idx));
} else {
op1 = read_mem64(_vm->mem,
_vm->regs->regs[_inst->operand1]);
}
} else {
if (_inst->is_opt_idx)
raise_except(ENCODE, "CMPI", __FILE__, __LINE__);
else
op1 = _vm->regs->regs[_inst->operand1];
}
op2 = (uint64_t)_inst->imm_data;
switch (_inst->opcode) {
case CMPIeq:
if ((int64_t)op1 == (int64_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPIlte:
if ((int64_t)op1 <= (int64_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPIgte:
if ((int64_t)op1 >= (int64_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPIulte:
if ((uint64_t)op1 <= (uint64_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPIugte:
if ((uint64_t)op1 >= (uint64_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
default:
raise_except(OPCODE, "CMPI", __FILE__, __LINE__);
}
} else if (_inst->mov_len == 4) {
uint32_t op1, op2;
if (_inst->op1_indirect) {
if (_inst->is_opt_idx) {
op1 = (int32_t)read_mem32(_vm->mem,
_vm->regs->regs[_inst->operand1]
+ decode_index16(_inst->opt_idx));
} else {
op1 = (int32_t)read_mem32(_vm->mem,
_vm->regs->regs[_inst->operand1]);
}
} else {
if (_inst->is_opt_idx)
raise_except(ENCODE, "CMPI", __FILE__, __LINE__);
else
op1 = (int32_t)_vm->regs->regs[_inst->operand1];
}
op2 = (uint32_t)_inst->imm_data;
switch (_inst->opcode) {
case CMPIeq:
if ((int32_t)op1 == (int32_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPIlte:
if ((int32_t)op1 <= (int32_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPIgte:
if ((int32_t)op1 >= (int32_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPIulte:
if ((uint32_t)op1 <= (uint32_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
case CMPIugte:
if ((uint32_t)op1 >= (uint32_t)op2)
_vm->regs->regs[FLAGS] |= 0x01;
else
_vm->regs->regs[FLAGS] &= ~0x01;
break;
default:
raise_except(OPCODE, "CMPI", __FILE__, __LINE__);
}
} else {
raise_except(ENCODE, "CMPI", __FILE__, __LINE__);
}
return _vm;
}
static vm *exec_mov(vm *_vm, inst *_inst) {
uint64_t op;
if (_inst->op2_indirect) {
uint64_t op2_addr = _vm->regs->regs[_inst->operand2];
if (_inst->is_op2_idx) {
switch (_inst->idx_len) {
case 2:
op2_addr += decode_index16(_inst->op2_idx);
break;
case 4:
op2_addr += decode_index32(_inst->op2_idx);
break;
case 8:
op2_addr += decode_index64(_inst->op2_idx);
break;
default:
raise_except(ENCODE, "MOV", __FILE__, __LINE__);
}
}
switch (_inst->op_len) {
case 1:
op = read_mem8(_vm->mem, op2_addr);
break;
case 2:
op = read_mem16(_vm->mem, op2_addr);
break;
case 4:
op = read_mem32(_vm->mem, op2_addr);
break;
case 8:
op = read_mem64(_vm->mem, op2_addr);
break;
default:
raise_except(ENCODE, "MOV", __FILE__, __LINE__);
}
} else {
switch (_inst->op_len) {
case 1:
op = (uint8_t)_vm->regs->regs[_inst->operand2];
break;
case 2:
op = (uint16_t)_vm->regs->regs[_inst->operand2];
break;
case 4:
op = (uint32_t)_vm->regs->regs[_inst->operand2];
break;
case 8:
op = (uint64_t)_vm->regs->regs[_inst->operand2];
break;
default:
raise_except(ENCODE, "MOV", __FILE__, __LINE__);
}
if (_inst->is_op2_idx) {
switch (_inst->idx_len) {
case 2:
op += decode_index16(_inst->op2_idx);
break;
case 4:
op += decode_index32(_inst->op2_idx);
break;
case 8:
op += decode_index64(_inst->op2_idx);
break;
default:
raise_except(ENCODE, "MOV", __FILE__, __LINE__);
}
}
}
if (_inst->op1_indirect) {
uint64_t op1_addr = _vm->regs->regs[_inst->operand1];
if (_inst->is_op1_idx) {
switch (_inst->idx_len) {
case 2:
op1_addr += decode_index16(_inst->op1_idx);
break;
case 4:
op1_addr += decode_index32(_inst->op1_idx);
break;
case 8:
op1_addr += decode_index64(_inst->op1_idx);
break;
default:
raise_except(ENCODE, "MOV", __FILE__, __LINE__);
}
}
switch (_inst->op_len) {
case 1:
write_mem8(_vm->mem, op1_addr, (uint8_t)op);
break;
case 2:
write_mem16(_vm->mem, op1_addr, (uint16_t)op);
break;
case 4:
write_mem32(_vm->mem, op1_addr, (uint32_t)op);
break;
case 8:
write_mem64(_vm->mem, op1_addr, (uint64_t)op);
break;
default:
raise_except(ENCODE, "MOV", __FILE__, __LINE__);
}
} else {
if (_inst->is_op1_idx)
raise_except(ENCODE, "MOV", __FILE__, __LINE__);
else
_vm->regs->regs[_inst->operand1] = op;
}
return _vm;
}
static vm *exec_movi(vm *_vm, inst *_inst) {
if (_inst->op1_indirect) {
uint64_t op = _vm->regs->regs[_inst->operand1];
if (_inst->is_opt_idx)
op += decode_index16(_inst->opt_idx);
switch (_inst->mov_len) {
case 1:
write_mem8(_vm->mem, op, (uint8_t)_inst->imm_data);
break;
case 2:
write_mem16(_vm->mem, op, (uint16_t)_inst->imm_data);
break;
case 4:
write_mem32(_vm->mem, op, (uint32_t)_inst->imm_data);
break;
case 8:
write_mem64(_vm->mem, op, (uint64_t)_inst->imm_data);
break;
default:
raise_except(ENCODE, "MOVI", __FILE__, __LINE__);
}
} else {
if (_inst->is_opt_idx)
raise_except(ENCODE, "MOVI", __FILE__, __LINE__);
else {
switch (_inst->mov_len) {
case 1:
_vm->regs->regs[_inst->operand1] = (uint8_t)_inst->imm_data;
break;
case 2:
_vm->regs->regs[_inst->operand1] = (uint16_t)_inst->imm_data;
break;
case 4:
_vm->regs->regs[_inst->operand1] = (uint32_t)_inst->imm_data;
break;
case 8:
_vm->regs->regs[_inst->operand1] = (uint64_t)_inst->imm_data;
break;
default:
raise_except(ENCODE, "MOVI", __FILE__, __LINE__);
}
}
}
return _vm;
}
static vm *exec_movin(vm *_vm, inst *_inst) {
uint64_t op2;
switch (_inst->imm_len) {
case 2:
op2 = decode_index16(_inst->imm_data);
break;
case 4:
op2 = decode_index32(_inst->imm_data);
break;
case 8:
op2 = decode_index64(_inst->imm_data);
break;
default:
raise_except(ENCODE, "MOVIn", __FILE__, __LINE__);
}
if (_inst->op1_indirect) {
uint64_t op1 = _vm->regs->regs[_inst->operand1];
if (_inst->is_opt_idx)
op1 += decode_index16(_inst->opt_idx);
write_memn(_vm->mem, op1, op2);
} else {
if (_inst->is_opt_idx)
raise_except(ENCODE, "MOVIn", __FILE__, __LINE__);
else
_vm->regs->regs[_inst->operand1] = op2;
}
return _vm;
}
static vm *exec_movrel(vm *_vm, inst *_inst) {
size_t inst_len = 2;
if (_inst->is_opt_idx)
inst_len += 2;
inst_len += _inst->imm_len;
uint64_t op2 = _vm->regs->regs[IP] + inst_len + _inst->imm_data;
if (_inst->op1_indirect) {
uint64_t op1_addr = _vm->regs->regs[_inst->operand1];
if (_inst->is_opt_idx)
op1_addr += decode_index16(_inst->opt_idx);
write_mem64(_vm->mem, op1_addr, op2);
} else {
if (_inst->is_opt_idx)
raise_except(ENCODE, "MOVREL", __FILE__, __LINE__);
else
_vm->regs->regs[_inst->operand1] = op2;
}
return _vm;
}
static vm *exec_movn(vm *_vm, inst *_inst) {
uint64_t op2;
if (_inst->op2_indirect) {
uint64_t op2_addr = _vm->regs->regs[_inst->operand2];
if (_inst->is_op2_idx) {
switch (_inst->idx_len) {
case 2:
op2_addr += decode_index16(_inst->op2_idx);
break;
case 4:
op2_addr += decode_index32(_inst->op2_idx);
break;
default:
raise_except(ENCODE, "MOVn", __FILE__, __LINE__);
}
}
op2 = read_memn(_vm->mem, op2_addr);
} else {
op2 = _vm->regs->regs[_inst->operand2];
if (_inst->is_op2_idx) {
switch (_inst->idx_len) {
case 2:
op2 += decode_index16(_inst->op2_idx);
break;
case 4:
op2 += decode_index32(_inst->op2_idx);
break;
default:
raise_except(ENCODE, "MOVn", __FILE__, __LINE__);
}
}
op2 = uintn(op2);
}
if (_inst->op1_indirect) {
uint64_t op1 = _vm->regs->regs[_inst->operand1];
if (_inst->is_op1_idx) {
switch (_inst->idx_len) {
case 2:
op1 += decode_index16(_inst->op1_idx);
break;
case 4:
op1 += decode_index32(_inst->op1_idx);
break;
default:
raise_except(ENCODE, "MOVn", __FILE__, __LINE__);
}
}
write_memn(_vm->mem, op1, op2);
} else {
if (_inst->is_op1_idx)
raise_except(ENCODE, "MOVn", __FILE__, __LINE__);
else
_vm->regs->regs[_inst->operand1] = op2;
}
return _vm;
}
static vm *exec_movsn(vm *_vm, inst *_inst) {
int64_t op2;
if (_inst->op2_indirect) {
int64_t op2_addr = _vm->regs->regs[_inst->operand2];
if (_inst->is_op2_idx) {
switch (_inst->idx_len) {
case 2:
op2_addr += decode_index16(_inst->op2_idx);
break;
case 4:
op2_addr += decode_index32(_inst->op2_idx);
break;
default:
raise_except(ENCODE, "MOVsn", __FILE__, __LINE__);
}
}
op2 = read_memn(_vm->mem, (uint64_t)op2_addr);
} else {
op2 = _vm->regs->regs[_inst->operand2];
if (_inst->is_op2_idx)
op2 += (int64_t)_inst->op2_idx;
}
if (_inst->op1_indirect) {
int64_t op1_addr = _vm->regs->regs[_inst->operand1];
if (_inst->is_op1_idx) {
switch (_inst->idx_len) {
case 2:
op1_addr += decode_index16(_inst->op1_idx);
break;
case 4:
op1_addr += decode_index32(_inst->op1_idx);
break;
default:
raise_except(ENCODE, "MOVsn", __FILE__, __LINE__);
}
}
write_memn(_vm->mem, (uint64_t)op1_addr, op2);
} else {
if (_inst->is_op1_idx)
raise_except(ENCODE, "MOVsn", __FILE__, __LINE__);
else
_vm->regs->regs[_inst->operand1] = op2;
}
return _vm;
}
static vm *exec_pop(vm *_vm, inst *_inst) {
if (_inst->is_64op) {
uint64_t op = read_mem64(_vm->mem, _vm->regs->regs[R0]);
if (_inst->is_imm) {
if (_inst->op1_indirect) {
write_mem64(_vm->mem,
_vm->regs->regs[_inst->operand1]
+ decode_index16(_inst->imm), op);
} else {
_vm->regs->regs[_inst->operand1] = op + (int64_t)_inst->imm;
}
} else {
if (_inst->op1_indirect) {
write_mem64(_vm->mem,
_vm->regs->regs[_inst->operand1], op);
} else {
_vm->regs->regs[_inst->operand1] = op;
}
}
_vm->regs->regs[R0] = _vm->regs->regs[R0] + 8;
} else {
uint32_t op = read_mem32(_vm->mem, _vm->regs->regs[R0]);
if (_inst->is_imm) {
if (_inst->op1_indirect) {
write_mem32(_vm->mem,
_vm->regs->regs[_inst->operand1]
+ decode_index16(_inst->imm), op);
} else {
_vm->regs->regs[_inst->operand1] = op + (int32_t)_inst->imm;
}
} else {
if (_inst->op1_indirect) {
write_mem32(_vm->mem,
_vm->regs->regs[_inst->operand1], op);
} else {
_vm->regs->regs[_inst->operand1] = op;
}
}
_vm->regs->regs[R0] = _vm->regs->regs[R0] + 4;
}
return _vm;
}
static vm *exec_popn(vm *_vm, inst *_inst) {
if (_inst->is_64op) {
int64_t op = read_mem64(_vm->mem, _vm->regs->regs[R0]);
if (_inst->is_imm) {
if (_inst->op1_indirect) {
write_mem64(_vm->mem,
_vm->regs->regs[_inst->operand1]
+ decode_index16(_inst->imm), op);
} else {
_vm->regs->regs[_inst->operand1] = op + (int64_t)_inst->imm;
}
} else {
if (_inst->op1_indirect) {
write_mem64(_vm->mem,
_vm->regs->regs[_inst->operand1], op);
} else {
_vm->regs->regs[_inst->operand1] = op;
}
}
_vm->regs->regs[R0] = _vm->regs->regs[R0] + ARCH_BYTES;
} else {
int32_t op = read_mem32(_vm->mem, _vm->regs->regs[R0]);
if (_inst->is_imm) {
if (_inst->op1_indirect) {
write_mem32(_vm->mem,
_vm->regs->regs[_inst->operand1]
+ decode_index16(_inst->imm), op);
} else {
_vm->regs->regs[_inst->operand1] = op + (int32_t)_inst->imm;
}
} else {
if (_inst->op1_indirect) {
write_mem32(_vm->mem,
_vm->regs->regs[_inst->operand1], op);
} else {
_vm->regs->regs[_inst->operand1] = op;
}
}
_vm->regs->regs[R0] = _vm->regs->regs[R0] + ARCH_BYTES;
}
return _vm;
}
static vm *exec_push(vm *_vm, inst *_inst) {
if (_inst->is_64op) {
uint64_t op;
if (_inst->is_imm) {
if (_inst->op1_indirect) {
op = read_mem64(_vm->mem,
_vm->regs->regs[_inst->operand1]
+ decode_index16(_inst->imm));
} else {
op = _vm->regs->regs[_inst->operand1] + (int64_t)_inst->imm;
}
} else {
if (_inst->op1_indirect) {
op = read_mem64(_vm->mem,