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Temporary for testing

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This commit is contained in:
Jasmine Iwanek
2022-09-04 16:02:52 -04:00
parent 199bbed5ee
commit 03bf62cccf
3 changed files with 85 additions and 13 deletions
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45
src/cpu/x86_ops_ret.h
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@@ -96,6 +96,51 @@ static int opRETF_a32_imm(uint32_t fetchdat)
return 0;
}
static int opIRET_186(uint32_t fetchdat)
{
int cycles_old = cycles; UN_USED(cycles_old);
if ((cr0 & 1) && (cpu_state.eflags & VM_FLAG) && (IOPL != 3))
{
x86gpf(NULL,0);
return 1;
}
if (msw&1)
{
optype = IRET;
pmodeiret(0);
optype = 0;
}
else
{
uint16_t new_cs;
CPU_SET_OXPC
if (stack32)
{
cpu_state.pc = readmemw(ss, ESP);
new_cs = readmemw(ss, ESP + 2);
cpu_state.flags = (cpu_state.flags & 0x7000) | (readmemw(ss, ESP + 4) & 0xffd5) | 2;
ESP += 6;
}
else
{
cpu_state.pc = readmemw(ss, SP);
new_cs = readmemw(ss, ((SP + 2) & 0xffff));
cpu_state.flags = (cpu_state.flags & 0x7000) | (readmemw(ss, ((SP + 4) & 0xffff)) & 0x0fd5) | 2;
SP += 6;
}
loadcs(new_cs);
cycles -= timing_iret_rm;
}
flags_extract();
nmi_enable = 1;
CPU_BLOCK_END();
PREFETCH_RUN(cycles_old-cycles, 1, -1, 2,0,0,0, 0);
PREFETCH_FLUSH();
return cpu_state.abrt;
}
static int opIRET_286(uint32_t fetchdat)
{
int cycles_old = cycles; UN_USED(cycles_old);