test app

[Baruch Siach]

Hi Vanalme,

On Tue, Mar 08, 2011 at 11:09:57AM +0100, Vanalme Filip wrote:
> As a start, I just took over your Makefile and a minimal source file :
> 
> __asm__ (".text\n"
>         ".globl _start\n"
>         "_start:\n"
>         "ldr    sp, =0xA7E00000\n"
>         "bl     main\n"
>         "stop:\n"
>         "b      stop\n"
>         );
> 
> int main (int argc, char *argv[])
> {
> 	return 0;
> }
> 
> I think I might still miss something because the assembler part gives me errors e.g. 
> 	" Error: no such instruction: 'ldr sp,=0xA7E00000' "
> 	" Error: no such instruction: 'bl main' "
> 	" Error: no such instruction: 'b stop' "
> 
> Maybe a tab/space related issue ?

Works for me (using the CodeSourcery toolchain):

$ cat baretest.c 
__asm__ (".text\n"
        ".globl _start\n"
        "_start:\n"
        "ldr    sp, =0xA7E00000\n"
        "bl     main\n"
        "stop:\n"
        "b      stop\n"
        );

int main (int argc, char *argv[])
{
        return 0;
}
$ arm-none-linux-gnueabi-gcc -Wall -Os -nostdlib baretest.c -o baretest.elf -Wl,-Ttext=0x78000000
$ arm-none-linux-gnueabi-objdump -S baretest.elf 

baretest.elf:     file format elf32-littlearm


Disassembly of section .text:

78000000 <_start>:
78000000:   e59fd00c    ldr sp, [pc, #12]   ; 78000014 <main+0x8>
78000004:   eb000000    bl  7800000c <main>

78000008 <stop>:
78000008:   eafffffe    b   78000008 <stop>

7800000c <main>:
7800000c:   e3a00000    mov r0, #0
78000010:   e12fff1e    bx  lr
78000014:   a7e00000    .word   0xa7e00000

baruch

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