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Fixed to 32-bit IDIV and IMUL

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@880
This commit is contained in:
Sjoerd van der Berg 2003-04-06 13:34:19 +00:00
parent adb8268359
commit a49cad547d
1 changed files with 5 additions and 5 deletions
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10
src/cpu/core_full/op.h
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@ -229,9 +229,9 @@ switch (inst.code.op) {
}
case O_IMULd:
{
Bit64s temps=(Bit64s)reg_eax*(Bit64s)inst.op1.ds;
reg_eax=(Bit32s)(temps);
reg_edx=(Bit32s)(temps >> 32);
Bit64s temps=(Bit64s)((Bit32s)reg_eax)*(Bit64s)inst.op1.ds;
reg_eax=(Bit32u)(temps);
reg_edx=(Bit32u)(temps >> 32);
flags.type=t_MUL;
if ( (reg_edx==0xffffffff) && (reg_eax & 0x80000000) ) {
flags.cf=flags.of=false;
@ -267,7 +267,7 @@ switch (inst.code.op) {
Bit64u quo=val/inst.op1.d;
reg_edx=(Bit32u)(val % inst.op1.d);
reg_eax=(Bit32u)quo;
if (quo!=reg_eax) { inst.op1.b=0;goto doint;}
if (quo!=(Bit64u)reg_eax) { inst.op1.b=0;goto doint;}
goto nextopcode;
}
case O_IDIVb:
@ -295,7 +295,7 @@ switch (inst.code.op) {
Bit64s quo=val/inst.op1.ds;
reg_edx=(Bit32s)(val % inst.op1.ds);
reg_eax=(Bit32s)(quo);
if (quo!=(Bit32s)reg_eax) { inst.op1.b=0;goto doint;}
if (quo!=(Bit64s)((Bit32s)reg_eax)) { inst.op1.b=0;goto doint;}
goto nextopcode;
}
case O_AAM: