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Fixed use of selector override with POP r/m - GTA now works again.

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This commit is contained in:
TomW 2013-10-31 19:57:25 +00:00
commit f478ed3b96
2 changed files with 46 additions and 10 deletions
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32
src/386_ops.h
View file

@ -63,6 +63,38 @@ static inline uint32_t POP_L()
return ret;
}
static inline uint16_t POP_W_seg(uint32_t seg)
{
uint16_t ret;
if (stack32)
{
ret = readmemw(seg, ESP); if (abrt) return 0;
ESP += 2;
}
else
{
ret = readmemw(seg, SP); if (abrt) return 0;
SP += 2;
}
return ret;
}
static inline uint32_t POP_L_seg(uint32_t seg)
{
uint32_t ret;
if (stack32)
{
ret = readmeml(seg, ESP); if (abrt) return 0;
ESP += 4;
}
else
{
ret = readmeml(seg, SP); if (abrt) return 0;
SP += 4;
}
return ret;
}
#include "x86_ops_arith.h"
#include "x86_ops_atomic.h"
#include "x86_ops_bcd.h"

24
src/x86_ops_stack.h
View file

@ -226,9 +226,10 @@ static int opPUSH_imm_bl(uint32_t fetchdat)
static int opPOPW_a16(uint32_t fetchdat)
{
uint16_t temp;
uint32_t tempseg = ssegs ? oldss : ss;
if (ssegs) ss=oldss;
temp = POP_W(); if (abrt) return 0;
temp = POP_W_seg(tempseg); if (abrt) return 0;
fetch_ea_16(fetchdat);
seteaw(temp);
if (abrt)
@ -244,9 +245,10 @@ static int opPOPW_a16(uint32_t fetchdat)
static int opPOPW_a32(uint32_t fetchdat)
{
uint16_t temp;
uint32_t tempseg = ssegs ? oldss : ss;
temp = POP_W_seg(tempseg); if (abrt) return 0;
if (ssegs) ss=oldss;
temp = POP_W(); if (abrt) return 0;
fetch_ea_32(fetchdat);
seteaw(temp);
if (abrt)
@ -263,10 +265,11 @@ static int opPOPW_a32(uint32_t fetchdat)
static int opPOPL_a16(uint32_t fetchdat)
{
uint32_t temp;
uint32_t tempseg = ssegs ? oldss : ss;
if (ssegs) ss=oldss;
temp = POP_L(); if (abrt) return 0;
fetch_ea_16(fetchdat);
temp = POP_L_seg(tempseg); if (abrt) return 0;
fetch_ea_16(fetchdat);
seteal(temp);
if (abrt)
{
@ -281,9 +284,10 @@ static int opPOPL_a16(uint32_t fetchdat)
static int opPOPL_a32(uint32_t fetchdat)
{
uint32_t temp;
uint32_t tempseg = ssegs ? oldss : ss;
temp = POP_L_seg(tempseg); if (abrt) return 0;
if (ssegs) ss=oldss;
temp = POP_L(); if (abrt) return 0;
fetch_ea_32(fetchdat);
seteal(temp);
if (abrt)
@ -291,7 +295,7 @@ static int opPOPL_a32(uint32_t fetchdat)
if (stack32) ESP -= 4;
else SP -= 4;
}
if (is486) cycles -= ((mod == 3) ? 1 : 6);
else cycles -= ((mod == 3) ? 4 : 5);
return 0;