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https://github.com/vxunderground/MalwareSourceCode
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94 lines
964 B
NASM
94 lines
964 B
NASM
;
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; grafix --- graflib.asm
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;
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; miscellaneous assembly routines
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;
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; Written 4/87 by Scott Snyder (ssnyder@romeo.caltech.edu or @citromeo.bitnet)
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;
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; Modified 5/29/87 by sss to allow for different memory models
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;
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title graflib
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include macros.ah
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buflen equ 32768
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sseg
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endss
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dseg
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endds
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buf segment public 'BUF'
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db buflen dup(?)
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buf ends
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cseg _graflib
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pBegin g_bufseg
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mov ax, buf
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ret
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pEnd g_bufseg
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pBegin g_fmemcpy
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push bp
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mov bp,sp
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push di
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push si
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push ds
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cld
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les di,[bp+argbase]
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lds si,[bp+argbase+4]
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mov cx,[bp+argbase+8]
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shr cx, 1
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jnc c1
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movsb
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c1: rep movsw
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pop ds
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pop si
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pop di
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mov sp,bp
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pop bp
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ret
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pEnd g_fmemcpy
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pBegin g_fmemset
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push bp
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mov bp,sp
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push di
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push si
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cld
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les di,[bp+argbase]
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mov al,[bp+argbase+4]
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mov ah,al
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mov cx,[bp+argbase+6]
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shr cx,1
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jnc s1
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stosb
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s1: rep stosw
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pop si
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pop di
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mov sp,bp
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pop bp
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ret
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pEnd g_fmemset
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df_ g_fmemcpy
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df_ g_fmemset
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df_ g_bufseg
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endcs _graflib
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end
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