strcmp

[ChimpFace9000]

Does anyone have a string compare procedure in asm?

[Cybrg641]

All you need to do is go through each byte of the arrays and compare them with each other. If they are not equal, go to a different label. If you have reached the end of the arrays and all of them were equal then go to another label. I don't have a procedure, but I can write one if you want.

[ChimpFace9000]

Ya that would be cool. I tried to write one, but i just have trouble working with two strings.

[pp7]

_strcmp proc STDCALL wrd1:dword, wrd2:dword
mov ecx, wrd1
mov edx, wrd2
xor eax, eax

@@lop:
mov bl, byte ptr [ecx]
mov bh, byte ptr [edx]
cmp bl, bh
jne @@err
cmp bl, 0
je @@done
cmp bh, 0
je @@done
inc ecx
inc edx
jmp @@lop

@@err:
ret

@@done:
mov eax, 1
ret

_strcmp endp




A few months late but never mind!! LOL

[ChimpFace9000]

A little late, but thanks for the reply. If you look into the newest APJ, the strmp routine i eventualy got to work is in there.

[Warmaster199]

This is for using GCC... I hope this map come in useful...

inline char * strcpy(char * dest,const char *src)
{
__asm__("cld\n"
	"1:\tlodsb\n\t"
	"stosb\n\t"
	"testb %%al,%%al\n\t"
	"jne 1b"
	: /* no output */
	:"S" (src),"D" (dest):"si","di","ax","memory");
return dest;
}