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FILD with MOD 3 now correctly behaves like FFREEP (undocumented behavior).

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This commit is contained in:
OBattler
2016-08-09 03:42:32 +02:00
parent 8a588dcc82
commit e6553975da
2 changed files with 17 additions and 0 deletions
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8
src/x87_ops_loadstore.h
View File

@@ -3,6 +3,10 @@ static int opFILDiw_a16(uint32_t fetchdat)
int16_t temp; int16_t temp;
FP_ENTER(); FP_ENTER();
fetch_ea_16(fetchdat); fetch_ea_16(fetchdat);
if (mod == 3)
{
return opFFREEP(fetchdat)
}
if (fplog) pclog("FILDw %08X:%08X\n", easeg, eaaddr); if (fplog) pclog("FILDw %08X:%08X\n", easeg, eaaddr);
temp = geteaw(); if (abrt) return 1; temp = geteaw(); if (abrt) return 1;
if (fplog) pclog(" %f\n", (double)temp); if (fplog) pclog(" %f\n", (double)temp);
@@ -15,6 +19,10 @@ static int opFILDiw_a32(uint32_t fetchdat)
int16_t temp; int16_t temp;
FP_ENTER(); FP_ENTER();
fetch_ea_32(fetchdat); fetch_ea_32(fetchdat);
if (mod == 3)
{
return opFFREEP(fetchdat)
}
if (fplog) pclog("FILDw %08X:%08X\n", easeg, eaaddr); if (fplog) pclog("FILDw %08X:%08X\n", easeg, eaaddr);
temp = geteaw(); if (abrt) return 1; temp = geteaw(); if (abrt) return 1;
if (fplog) pclog(" %f\n", (double)temp); if (fplog) pclog(" %f\n", (double)temp);

9
src/x87_ops_misc.h
View File

@@ -50,6 +50,15 @@ static int opFFREE(uint32_t fetchdat)
return 0; return 0;
} }
static int opFFREEP(uint32_t fetchdat)
{
if (fplog) pclog("FFREEP\n");
tag[(TOP + fetchdat) & 7] = 3; if (abrt) return 1;
x87_pop();
CLOCK_CYCLES(3);
return 0;
}
static int opFST(uint32_t fetchdat) static int opFST(uint32_t fetchdat)
{ {
FP_ENTER(); FP_ENTER();