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;; library functions for rdtmain - test of rdx linking and execution
;; library function = _strcmp, defined as in C
[SECTION .text]
[BITS 32]
[GLOBAL _strcmp]
_strcmp:
push ebp
mov ebp,esp
;; ebp+8 = first paramater, ebp+12 = second
mov esi,[ebp+8]
mov edi,[ebp+12]
.loop:
mov cl,byte [esi]
mov dl,byte [edi]
cmp cl,dl
jb .below
ja .above
or cl,cl
jz .match
inc esi
inc edi
jmp .loop
.below:
mov eax,-1
pop ebp
ret
.above:
mov eax,1
pop ebp
ret
.match:
xor eax,eax
pop ebp
ret
[SECTION .data]
[GLOBAL _message]
_message: db 'hello',0
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