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Add pseudoteletypewriter to emulator

Browse source 
https://justine.storage.googleapis.com/emulator628.mp4
This commit is contained in:
Justine Tunney 2020-08-26 23:08:08 -07:00
parent e86cff8ba0
commit 5aabacb361
94 changed files with 3245 additions and 2179 deletions
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29
tool/build/lib/fpu.h
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@ -15,32 +15,9 @@ void OpFinit(struct Machine *);
void OpFwait(struct Machine *);
void FpuPush(struct Machine *, long double);
long double FpuPop(struct Machine *);
forceinline long double *FpuSt(struct Machine *m, unsigned i) {
i += m->fpu.sp;
i &= 0b111;
return m->fpu.st + i;
}
forceinline int FpuGetTag(struct Machine *m, unsigned i) {
unsigned t;
t = m->fpu.tw;
i += m->fpu.sp;
i &= 0b111;
i *= 2;
t &= 0b11 << i;
t >>= i;
return t;
}
forceinline void FpuSetTag(struct Machine *m, unsigned i, unsigned t) {
i += m->fpu.sp;
t &= 0b11;
i &= 0b111;
i *= 2;
m->fpu.tw &= ~(0b11 << i);
m->fpu.tw |= t << i;
}
long double *FpuSt(struct Machine *, unsigned);
int FpuGetTag(struct Machine *, unsigned);
void FpuSetTag(struct Machine *, unsigned, unsigned);
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */