2008-10-08 09:16:41 bfin-linux-uclibc-??? build asm error???

浩何 (CHINA)

Message: 63266

hi:

everyone,

I have a question when i build .S and .c

my hello.S is as follow :

.extern _c;

.align 4;

.global _add_x;

_add_x:

r0 = r0 + r1;

P0.L = _c;

P0.H = _c; rts;

_add_x.end:

my hello.c :

#include <stdio.h>

int c = 3;

extern int add_x(int a, int b) __attribute__((section("l1_text")));

main()

{

int c;

c = add_x(1, 2);

printf("hello , c = %d \n", c);

}

Makefile:

CC=bfin-linux-uclibc-gcc

hello:

$(CC) -Wall -O2 -c hello_a.S

$(CC) -Wall -O2 -c hello.c

$(CC) -Wall -O2 -o hello hello_a.o hello.o -Wall

and when i make this program

the log:

warning:warning:relocation references a different segment

when i remove

.extern _c;

I can make it successful

why??

thanks

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2008-10-08 14:19:50 Re: bfin-linux-uclibc-??? build asm error???

Mike Frysinger (UNITED STATES)

Message: 63279

your assembly code is incorrect for FDPIC. please read the documentation: