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Cleaned up x87 tag register handling.

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This commit is contained in:
SarahW 2018-10-01 21:02:40 +01:00
commit dbb01ef9e2
6 changed files with 82 additions and 63 deletions
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12
src/x87_ops.h
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@ -40,7 +40,7 @@ static inline void x87_push(double i)
{
cpu_state.TOP=(cpu_state.TOP-1)&7;
cpu_state.ST[cpu_state.TOP] = i;
cpu_state.tag[cpu_state.TOP&7] = (i == 0.0) ? 1 : 0;
cpu_state.tag[cpu_state.TOP&7] = TAG_VALID;
}
static inline void x87_push_u64(uint64_t i)
@ -55,13 +55,13 @@ static inline void x87_push_u64(uint64_t i)
cpu_state.TOP=(cpu_state.TOP-1)&7;
cpu_state.ST[cpu_state.TOP] = td.d;
cpu_state.tag[cpu_state.TOP&7] = (td.d == 0.0) ? 1 : 0;
cpu_state.tag[cpu_state.TOP&7] = TAG_VALID;
}
static inline double x87_pop()
{
double t = cpu_state.ST[cpu_state.TOP];
cpu_state.tag[cpu_state.TOP&7] = 3;
cpu_state.tag[cpu_state.TOP&7] = TAG_EMPTY;
cpu_state.TOP=(cpu_state.TOP+1)&7;
return t;
}
@ -186,13 +186,15 @@ static inline void x87_ld_frstor(int reg)
cpu_state.MM[reg].q = readmemq(easeg, cpu_state.eaaddr);
cpu_state.MM_w4[reg] = readmemw(easeg, cpu_state.eaaddr + 8);
if (cpu_state.MM_w4[reg] == 0x5555 && cpu_state.tag[reg] == 2)
if ((cpu_state.MM_w4[reg] == 0x5555) && (cpu_state.tag[reg] & TAG_UINT64))
{
cpu_state.tag[reg] = TAG_UINT64;
cpu_state.ST[reg] = (double)cpu_state.MM[reg].q;
}
else
{
cpu_state.tag[reg] = TAG_VALID;
cpu_state.ST[reg] = x87_ld80();
}
}
static inline void x87_ldmmx(MMX_REG *r, uint16_t *w4)