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Fixed the overflow checks for all IDIV instructions for 286+ CPU's;

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Fixed the mouse close functions.
This commit is contained in:
OBattler
2017-12-14 01:35:04 +01:00
parent 044559f4e9
commit 8c38b94594
5 changed files with 12 additions and 17 deletions
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16
src/cpu/x86_ops_misc.h
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@@ -67,7 +67,6 @@ static int opF6_a16(uint32_t fetchdat)
int tempws, tempws2 = 0;
uint16_t tempw, src16;
uint8_t src, dst;
int8_t temps;
fetch_ea_16(fetchdat);
dst = geteab(); if (cpu_state.abrt) return 1;
@@ -133,8 +132,7 @@ static int opF6_a16(uint32_t fetchdat)
case 0x38: /*IDIV AL,b*/
tempws = (int)(int16_t)AX;
if (dst != 0) tempws2 = tempws / (int)((int8_t)dst);
temps = tempws2 & 0xff;
if (dst && ((int)temps == tempws2))
if (dst && ((tempws2 > 0x0000007F) || (tempws2 < 0xFFFFFF80)))
{
AH = (tempws % (int)((int8_t)dst)) & 0xff;
AL = tempws2 & 0xff;
@@ -164,7 +162,6 @@ static int opF6_a32(uint32_t fetchdat)
int tempws, tempws2 = 0;
uint16_t tempw, src16;
uint8_t src, dst;
int8_t temps;
fetch_ea_32(fetchdat);
dst = geteab(); if (cpu_state.abrt) return 1;
@@ -230,8 +227,7 @@ static int opF6_a32(uint32_t fetchdat)
case 0x38: /*IDIV AL,b*/
tempws = (int)(int16_t)AX;
if (dst != 0) tempws2 = tempws / (int)((int8_t)dst);
temps = tempws2 & 0xff;
if (dst && ((int)temps == tempws2))
if (dst && ((tempws2 > 0x0000007F) || (tempws2 < 0xFFFFFF80)))
{
AH = (tempws % (int)((int8_t)dst)) & 0xff;
AL = tempws2 & 0xff;
@@ -263,7 +259,6 @@ static int opF7_w_a16(uint32_t fetchdat)
{
uint32_t templ, templ2;
int tempws, tempws2 = 0;
int16_t temps16;
uint16_t src, dst;
fetch_ea_16(fetchdat);
@@ -329,8 +324,7 @@ static int opF7_w_a16(uint32_t fetchdat)
case 0x38: /*IDIV AX,w*/
tempws = (int)((DX << 16)|AX);
if (dst) tempws2 = tempws / (int)((int16_t)dst);
temps16 = tempws2 & 0xffff;
if ((dst != 0) && ((int)temps16 == tempws2))
if ((dst != 0) && ((tempws2 > 0x00007FFF) || (tempws2 < 0xFFFF8000)))
{
DX = tempws % (int)((int16_t)dst);
AX = tempws2 & 0xffff;
@@ -355,7 +349,6 @@ static int opF7_w_a32(uint32_t fetchdat)
{
uint32_t templ, templ2;
int tempws, tempws2 = 0;
int16_t temps16;
uint16_t src, dst;
fetch_ea_32(fetchdat);
@@ -421,8 +414,7 @@ static int opF7_w_a32(uint32_t fetchdat)
case 0x38: /*IDIV AX,w*/
tempws = (int)((DX << 16)|AX);
if (dst) tempws2 = tempws / (int)((int16_t)dst);
temps16 = tempws2 & 0xffff;
if ((dst != 0) && ((int)temps16 == tempws2))
if ((dst != 0) && ((tempws2 > 0x00007FFF) || (tempws2 < 0xFFFF8000)))
{
DX = tempws % (int)((int16_t)dst);
AX = tempws2 & 0xffff;