Thread: Compiling Help! Yay!

So, I'm working on stuff (a small os). The current code is simple:

Code:

#include <stdio.h>

char usrin[256];



int main(int argc, char *argv[])

{

 * * * *printf("> ");

 * * * *puts(usrin);

 * * * *printf("/n");

 * * * *printf(usrin);

 * * * *return 0;

}

, and to compile asm before I used c I use:

Code:

$ nasm myfile.asm -o myfile.bin -f bin

But when I try to use gcc and compile it normally "

Code:

$ gcc myfile.c -o myfile.bin

", it doesn't work at all when called on my bootdisk, and gives this funky output in nix:

Code:

$ sh usrin.bin

MZ?♥♦ÿÿ,@?♫▼º♫': not found

♫▼º♫': not found

usrin.bin: 1: Syntax error: word unexpected (expecting ")")

so then I tried to get gcc to stop before compiling, and instead just make asm code with

Code:

$ gcc myfile.c -o myfile.asm -S

. That makes this code:

Code:

 * * * *.file * "usrin.c"

 * * * *.def * *___main; * * * *.scl * *2; * * *.type * 32; * * .endef

 * * * *.text

LC0:

 * * * *.ascii "> \0"

LC1:

 * * * *.ascii "/n\0"

.globl _main

 * * * *.def * *_main; *.scl * *2; * * *.type * 32; * * .endef

_main:

 * * * *pushl * %ebp

 * * * *movl * *%esp, %ebp

 * * * *subl * *$8, %esp

 * * * *andl * *$-16, %esp

 * * * *movl * *$0, %eax

 * * * *movl * *%eax, -4(%ebp)

 * * * *movl * *-4(%ebp), %eax

 * * * *call * *__alloca

 * * * *call * *___main

 * * * *movl * *$LC0, (%esp)

 * * * *call * *_printf

 * * * *movl * *$_usrin, (%esp)

 * * * *call * *_puts

 * * * *movl * *$LC1, (%esp)

 * * * *call * *_printf

 * * * *movl * *$_usrin, (%esp)

 * * * *call * *_printf

 * * * *movl * *$0, %eax

 * * * *leave

 * * * *ret

 * * * *.comm * _usrin, 256 * * *# 256

 * * * *.def * *_puts; *.scl * *2; * * *.type * 32; * * .endef

 * * * *.def * *_printf; * * * *.scl * *2; * * *.type * 32; * * .endef

Then I tried compiling it with nasm with

Code:

$ nasm myfile.asm -o myfile.bin -f bin

. It gave me a crapload of errors, which were:

Code:

$ nasm myfile.asm -o myfile.bin -f bin

usrin.asm:1: error: attempt to define a local label before any non-local labels

usrin.asm:1: error: parser: instruction expected

usrin.asm:2: error: attempt to define a local label before any non-local labels

usrin.asm:2: error: parser: instruction expected

usrin.asm:3: error: attempt to define a local label before any non-local labels

usrin.asm:5: error: parser: instruction expected

usrin.asm:7: error: parser: instruction expected

usrin.asm:8: error: parser: instruction expected

usrin.asm:9: error: parser: instruction expected

usrin.asm:11: error: parser: instruction expected

usrin.asm:12: error: parser: instruction expected

usrin.asm:13: error: parser: instruction expected

usrin.asm:14: error: parser: instruction expected

usrin.asm:15: error: symbol `movl' redefined

usrin.asm:15: error: parser: instruction expected

usrin.asm:16: error: symbol `movl' redefined

usrin.asm:16: error: parser: instruction expected

usrin.asm:17: error: symbol `movl' redefined

usrin.asm:17: error: parser: instruction expected

usrin.asm:20: error: symbol `movl' redefined

usrin.asm:20: error: parser: instruction expected

usrin.asm:22: error: symbol `movl' redefined

usrin.asm:22: error: parser: instruction expected

usrin.asm:24: error: symbol `movl' redefined

usrin.asm:24: error: parser: instruction expected

usrin.asm:26: error: symbol `movl' redefined

usrin.asm:26: error: parser: instruction expected

usrin.asm:28: error: symbol `movl' redefined

usrin.asm:28: error: parser: instruction expected

usrin.asm:31: error: parser: instruction expected

usrin.asm:32: error: parser: instruction expected

usrin.asm:33: error: symbol `.def' redefined

usrin.asm:33: error: parser: instruction expected

Now, I'd have to admit I'm not the greatest at x86 assembly (that's why I'm using c ). And I'm not quite sure how to fix the errors, or otherwise get the damn thing compiled right.

If someone out there knows what is happening, please offer some insight!