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[ARM] A simple program to cross compile from C to ASSEMBLY

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sai685

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Code: 
#include<stdio.h>
#define GPIO_PORTA_DIR_R (*((volatile unsigned long *)0x40004400))
int main()
{
GPIO_PORTA_DIR_R = 0x80;
printf("GPIO_PORTA=%x",GPIO_PORTA_DIR_R);
}

This code is converted into assembly after this command in linux

$ gcc -S try.c​

which is like

Code: 
	.file	"try.c"
	.text
.globl main
	.type	main, @function
main:
.LFB2:
	pushq	%rbp
.LCFI0:
	movq	%rsp, %rbp
.LCFI1:
	movl	$1073759232, %eax
	movq	$128, (%rax)
	leave
	ret
.LFE2:
	.size	main, .-main
	.section	.eh_frame,"a",@progbits
.Lframe1:
	.long	.LECIE1-.LSCIE1
.LSCIE1:
	.long	0x0
	.byte	0x1
	.string	"zR"
	.uleb128 0x1
	.sleb128 -8
	.byte	0x10
	.uleb128 0x1
	.byte	0x3
	.byte	0xc
	.uleb128 0x7
	.uleb128 0x8
	.byte	0x90
	.uleb128 0x1
	.align 8
.LECIE1:
.LSFDE1:
	.long	.LEFDE1-.LASFDE1
.LASFDE1:
	.long	.LASFDE1-.Lframe1
	.long	.LFB2
	.long	.LFE2-.LFB2
	.uleb128 0x0
	.byte	0x4
	.long	.LCFI0-.LFB2
	.byte	0xe
	.uleb128 0x10
	.byte	0x86
	.uleb128 0x2
	.byte	0x4
	.long	.LCFI1-.LCFI0
	.byte	0xd
	.uleb128 0x6
	.align 8
.LEFDE1:
	.ident	"GCC: (GNU) 4.1.2 20080704 (Red Hat 4.1.2-44)"
	.section	.note.GNU-stack,"",@progbits

but after this i have enter the command to link the files
which is

$ as -o try.s​

after executing this command i am getting only empty lines that means it is not asking to me write any other command just it is showing a blank space.

let me know what is the solution for this and at the same time if you have any best material for this cross compiler please include link
 

I suspect that this is an example of the "XY Problem" (https://xyproblem.info/) where you are telling us the problem you are having with some solution you have come up with to your real problem.
"gcc" is quite happy to go directly from C to the object file in one command. You can certainly ask it to save the assembly data that it generates from the C code if you really want that as well.
Also you mention "cross-compile" in the title but the commands don't seem to tell the compiler to do that and the code looks like X86, even through the C code looks more like microcontroller code.
Perhaps you would be better of telling us exactly what you are trying to do (rather than how you are going about it).
Susan
 
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