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Fixed bug found in pop instructions when R0 and R1 are the same

This commit is contained in:
Jeremiah Orians 2016-10-29 14:52:08 -04:00
parent d290caa215
commit fdbe263dbe
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GPG Key ID: 7457821534D2ACCD
1 changed files with 26 additions and 9 deletions
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35
vm_instructions.c
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@ -1298,11 +1298,14 @@ void PUSHPC(struct lilith* vm, struct Instruction* c)
void POPPC(struct lilith* vm, struct Instruction* c)
{
/* Update our index */
vm->reg[c->reg0] = vm->reg[c->reg0] - 4;
/* Read in the new PC */
vm->ip = readin_Reg(vm, vm->reg[c->reg0]);
/* Update our index */
vm->reg[c->reg0] = vm->reg[c->reg0] - 4;
/* Clear memory where PC was */
writeout_Reg(vm, vm->reg[c->reg0], 0);
}
void ADDI(struct lilith* vm, struct Instruction* c)
@ -1883,45 +1886,59 @@ void PUSH32(struct lilith* vm, struct Instruction* c)
}
void POPR(struct lilith* vm, struct Instruction* c)
{
uint32_t tmp;
vm->reg[c->reg1] = vm->reg[c->reg1] - 4;
vm->reg[c->reg0] = readin_Reg(vm, vm->reg[c->reg1]);
tmp = readin_Reg(vm, vm->reg[c->reg1]);
writeout_Reg(vm, vm->reg[c->reg1], 0);
vm->reg[c->reg0] = tmp;
}
void POP8(struct lilith* vm, struct Instruction* c)
{
int8_t tmp;
vm->reg[c->reg1] = vm->reg[c->reg1] - 1;
vm->reg[c->reg0] = readin_byte(vm, vm->reg[c->reg1], true);
tmp = readin_byte(vm, vm->reg[c->reg1], true);
writeout_byte(vm, vm->reg[c->reg1], 0);
vm->reg[c->reg0] = tmp;
}
void POPU8(struct lilith* vm, struct Instruction* c)
{
uint8_t tmp;
vm->reg[c->reg1] = vm->reg[c->reg1] - 1;
vm->reg[c->reg0] = readin_byte(vm, vm->reg[c->reg1], false);
tmp = readin_byte(vm, vm->reg[c->reg1], false);
writeout_byte(vm, vm->reg[c->reg1], 0);
vm->reg[c->reg0] = tmp;
}
void POP16(struct lilith* vm, struct Instruction* c)
{
int16_t tmp;
vm->reg[c->reg1] = vm->reg[c->reg1] - 2;
vm->reg[c->reg0] = readin_doublebyte(vm, vm->reg[c->reg1], true);
tmp = readin_doublebyte(vm, vm->reg[c->reg1], true);
writeout_doublebyte(vm, vm->reg[c->reg1], 0);
vm->reg[c->reg0] = tmp;
}
void POPU16(struct lilith* vm, struct Instruction* c)
{
uint16_t tmp;
vm->reg[c->reg1] = vm->reg[c->reg1] - 2;
vm->reg[c->reg0] = readin_doublebyte(vm, vm->reg[c->reg1], false);
tmp = readin_doublebyte(vm, vm->reg[c->reg1], false);
writeout_doublebyte(vm, vm->reg[c->reg1], 0);
vm->reg[c->reg0] = tmp;
}
void POP32(struct lilith* vm, struct Instruction* c)
{
int32_t tmp;
vm->reg[c->reg1] = vm->reg[c->reg1] - 4;
vm->reg[c->reg0] = readin_Reg(vm, vm->reg[c->reg1]);
tmp = readin_Reg(vm, vm->reg[c->reg1]);
writeout_Reg(vm, vm->reg[c->reg1], 0);
vm->reg[c->reg0] = tmp;
}
void POPU32(struct lilith* vm, struct Instruction* c)
{
uint32_t tmp;
vm->reg[c->reg1] = vm->reg[c->reg1] - 4;
vm->reg[c->reg0] = readin_Reg(vm, vm->reg[c->reg1]);
tmp = readin_Reg(vm, vm->reg[c->reg1]);
writeout_Reg(vm, vm->reg[c->reg1], 0);
vm->reg[c->reg0] = tmp;
}
void ANDI(struct lilith* vm, struct Instruction* c)