SO, i'm learning assembly on university and there we use Fedora. There we compile programs without any trouble. I got an raspberry pi and i was trying it out with some programs that we have done previously, nothing fancy. But i got some errors that i've never seen before and searched the whole internet and can't seem to figure it out. it's not a 64 x 32 bit problem neither. i've tried using gcc -o lab6 lab6.s as we do during class but got the same error.
The code:
/*
int nums[] = {10, -21, -30, 45};
int main() {
int i, *p;
for (i = 0, p = nums; i != 4; i++, p++)
printf("%d\n", *p);
return 0;
}
*/
.data
nums: .int 10, -21, -30, 45
Sf: .string "%d\n" ; string de formato para printf
.text
.globl main
main:
/********************************************************/
/* mantenha este trecho aqui e nao mexa - prologo !!! */
pushq %rbp
movq %rsp, %rbp
subq $16, %rsp
movq %rbx, -8(%rbp)
movq %r12, -16(%rbp)
/********************************************************/
movl $0, %ebx /* ebx = 0; */
movq $nums, %r12 /* r12 = &nums */
L1:
cmpl $4, %ebx /* if (ebx == 4) ? */
je L2 /* goto L2 */
movl (%r12), %eax /* eax = *r12 */
/*************************************************************/
/* este trecho imprime o valor de %eax (estraga %eax) */
movq $Sf, %rdi /* primeiro parametro (ponteiro)*/
movl %eax, %esi /* segundo parametro (inteiro) */
call printf /* chama a funcao da biblioteca */
/*************************************************************/
addl $1, %ebx /* ebx += 1; */
addq $4, %r12 /* r12 += 4; */
jmp L1 /* goto L1; */
L2:
/***************************************************************/
/* mantenha este trecho aqui e nao mexa - finalizacao!!!! */
movq $0, %rax /* rax = 0 (valor de retorno) */
movq -8(%rbp), %rbx
movq -16(%rbp), %r12
leave
ret
/***************************************************************/
error message:
pi@raspberrypi:~/Documents/inf1018_LUIZA $ as -o lab6.o lab6.s
lab6.s: Assembler messages:
lab6.s:13: Error: bad instruction string de formato para printf'
lab6.s:21: Error: bad instructionpushq %rbp'
lab6.s:22: Error: bad instruction movq %rsp,%rbp'
lab6.s:23: Error: bad instructionsubq $16,%rsp'
lab6.s:24: Error: bad instruction movq %rbx,-8(%rbp)'
lab6.s:25: Error: bad instructionmovq %r12,-16(%rbp)'
lab6.s:28: Error: bad instruction movl $0,%ebx'
lab6.s:29: Error: bad instructionmovq $nums,%r12'
lab6.s:32: Error: bad instruction cmpl $4,%ebx'
lab6.s:33: Error: bad instructionje L2'
lab6.s:35: Error: bad instruction movl (%r12),%eax'
lab6.s:39: Error: bad instructionmovq $Sf,%rdi'
lab6.s:40: Error: bad instruction movl %eax,%esi'
lab6.s:41: Error: bad instructioncall printf'
lab6.s:44: Error: bad instruction addl $1,%ebx'
lab6.s:45: Error: bad instructionaddq $4,%r12'
lab6.s:46: Error: bad instruction jmp L1'
lab6.s:51: Error: bad instructionmovq $0,%rax'
lab6.s:52: Error: bad instruction movq -8(%rbp),%rbx'
lab6.s:53: Error: bad instructionmovq -16(%rbp),%r12'
lab6.s:54: Error: bad instruction leave'
lab6.s:55: Error: bad instructionret '
