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feat(libsointu): make su_render return some error codes, typically due to FPU stack errors.

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This commit is contained in:
Veikko Sariola
2020-12-05 16:41:07 +02:00
parent 83937bb2ee
commit 7bb60de74e
3 changed files with 31 additions and 17 deletions
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4
render.asm
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@ -209,7 +209,9 @@ su_render_samples_time_finish:
pop _SI ; pop the pointer to samples
mov dword [_SI], edx ; *samples = samples rendered
mov dword [_BX], eax ; *time = time ticks rendered
xor eax, eax ; TODO: set eax to possible error code, now just 0
xor eax, eax
fnstsw ax ; store the FPU status flag in ax.
and ax, 0011100001000101b ; mask TOP pointer, stack error, zero divide and invalid operation
frstor [_SP] ; restore fpu state
add _SP,108 ; rewind the stack allocate for FPU state
%if BITS == 32 ; stdcall