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TomW 2013-05-27 19:56:33 +01:00
commit f822488656
89 changed files with 18428 additions and 6383 deletions
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152
src/x86_ops_ret.h Normal file
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@ -0,0 +1,152 @@
#define RETF_a16(stack_offset) \
if ((msw&1) && !(eflags&VM_FLAG)) \
{ \
pmoderetf(0, stack_offset); \
return 0; \
} \
if (ssegs) ss = oldss; \
oxpc = pc; \
if (stack32) \
{ \
pc = readmemw(ss, ESP); \
loadcs(readmemw(ss, ESP + 2)); \
} \
else \
{ \
pc = readmemw(ss, SP); \
loadcs(readmemw(ss, SP + 2)); \
} \
if (abrt) return 0; \
if (stack32) ESP += 4 + stack_offset; \
else SP += 4 + stack_offset; \
cycles -= is486 ? 13 : 18;
#define RETF_a32(stack_offset) \
if ((msw&1) && !(eflags&VM_FLAG)) \
{ \
pmoderetf(1, stack_offset); \
return 0; \
} \
if (ssegs) ss = oldss; \
oxpc = pc; \
if (stack32) \
{ \
pc = readmeml(ss, ESP); \
loadcs(readmeml(ss, ESP + 4) & 0xffff); \
} \
else \
{ \
pc = readmeml(ss, SP); \
loadcs(readmeml(ss, SP + 4) & 0xffff); \
} \
if (abrt) return 0; \
if (stack32) ESP += 8 + stack_offset; \
else SP += 8 + stack_offset; \
cycles -= is486 ? 13 : 18;
static int opRETF_a16(uint32_t fetchdat)
{
RETF_a16(0);
return 0;
}
static int opRETF_a32(uint32_t fetchdat)
{
RETF_a32(0);
return 0;
}
static int opRETF_a16_imm(uint32_t fetchdat)
{
uint16_t offset = getwordf();
RETF_a16(offset);
return 0;
}
static int opRETF_a32_imm(uint32_t fetchdat)
{
uint16_t offset = getwordf();
RETF_a32(offset);
return 0;
}
static int opIRET(uint32_t fetchdat)
{
if ((cr0 & 1) && (eflags & VM_FLAG) && (IOPL != 3))
{
x86gpf(NULL,0);
return 0;
}
if (ssegs) ss = oldss;
if (msw&1)
{
optype = IRET;
pmodeiret(0);
optype = 0;
}
else
{
uint16_t new_cs;
oxpc = pc;
if (stack32)
{
pc = readmemw(ss, ESP);
new_cs = readmemw(ss, ESP + 2);
flags = (readmemw(ss, ESP + 4) & 0xffd5) | 2;
ESP += 6;
}
else
{
pc = readmemw(ss, SP);
new_cs = readmemw(ss, ((SP + 2) & 0xffff));
flags = (readmemw(ss, ((SP + 4) & 0xffff)) & 0xffd5) | 2;
SP += 6;
}
loadcs(new_cs);
}
flags_extract();
cycles -= is486 ? 15 : 22;
nmi_enable = 1;
return 0;
}
static int opIRETD(uint32_t fetchdat)
{
if ((cr0 & 1) && (eflags & VM_FLAG) && (IOPL != 3))
{
x86gpf(NULL,0);
return 0;
}
if (ssegs) ss = oldss;
if (msw & 1)
{
optype = IRET;
pmodeiret(1);
optype = 0;
}
else
{
uint16_t new_cs;
oxpc = pc;
if (stack32)
{
pc = readmeml(ss, ESP);
new_cs = readmemw(ss, ESP + 4);
flags = (readmemw(ss, ESP + 8) & 0xffd5) | 2;
eflags = readmemw(ss, ESP + 10);
ESP += 12;
}
else
{
pc = readmeml(ss, SP);
new_cs = readmemw(ss, ((SP + 4) & 0xffff));
flags = (readmemw(ss,(SP + 8) & 0xffff) & 0xffd5) | 2;
eflags = readmemw(ss, (SP + 10) & 0xffff);
SP += 12;
}
loadcs(new_cs);
}
flags_extract();
cycles -= is486 ? 15 : 22;
nmi_enable = 1;
return 0;
}