69 lines
1.3 KiB
NASM
69 lines
1.3 KiB
NASM
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.386P
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.model FLAT
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externdef _snd_scaletable:dword
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externdef _paintbuffer:dword
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externdef _snd_linear_count:dword
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externdef _snd_p:dword
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externdef _snd_vol:dword
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externdef _snd_out:dword
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externdef _vright:dword
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externdef _vup:dword
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externdef _vpn:dword
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externdef _BOPS_Error:dword
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_DATA SEGMENT
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align 4
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fpenv:
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dd 0, 0, 0, 0, 0, 0, 0, 0
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_DATA ENDS
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_TEXT SEGMENT
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public _MaskExceptions
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_MaskExceptions:
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fnstenv ds:dword ptr[fpenv]
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or ds:dword ptr[fpenv],03Fh
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fldenv ds:dword ptr[fpenv]
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ret
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_TEXT ENDS
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_DATA SEGMENT
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align 4
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public ceil_cw, single_cw, full_cw, cw, pushed_cw
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ceil_cw dd 0
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single_cw dd 0
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full_cw dd 0
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cw dd 0
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pushed_cw dd 0
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_DATA ENDS
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_TEXT SEGMENT
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public _Sys_LowFPPrecision
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_Sys_LowFPPrecision:
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fldcw ds:word ptr[single_cw]
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ret
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public _Sys_HighFPPrecision
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_Sys_HighFPPrecision:
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fldcw ds:word ptr[full_cw]
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ret
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public _Sys_PushFPCW_SetHigh
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_Sys_PushFPCW_SetHigh:
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fnstcw ds:word ptr[pushed_cw]
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fldcw ds:word ptr[full_cw]
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ret
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public _Sys_PopFPCW
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_Sys_PopFPCW:
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fldcw ds:word ptr[pushed_cw]
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ret
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public _Sys_SetFPCW
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_Sys_SetFPCW:
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fnstcw ds:word ptr[cw]
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mov eax,ds:dword ptr[cw]
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and ah,0F0h
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or ah,003h
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mov ds:dword ptr[full_cw],eax
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and ah,0F0h
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or ah,00Ch
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mov ds:dword ptr[single_cw],eax
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and ah,0F0h
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or ah,008h
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mov ds:dword ptr[ceil_cw],eax
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ret
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_TEXT ENDS
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END
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