| ;; 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 |
