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[/] [or1k/] [trunk/] [linux/] [uClibc/] [libc/] [sysdeps/] [linux/] [cris/] [__init_brk.c] - Rev 1779

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/* From libc-5.3.12 */
 
#include <unistd.h>
#include <sys/syscall.h>
#include <errno.h>
#include "sysdep.h"
 
void * ___brk_addr = 0;
 
int
__init_brk (void)
{
    if (___brk_addr == 0) {
	    /* 
		 * Notice that we don't need to save/restore the GOT
	     * register since that is not call clobbered by the syscall.
	     */
	    asm ("clear.d $r10\n\t"
		 "movu.w " STR(__NR_brk) ",$r9\n\t"
		 "break 13\n\t"
		 "move.d $r10, %0"
		 : "=r" (___brk_addr)
		 :
		 : "r9", "r10");
 
	    if (___brk_addr == 0) {
		    __set_errno(ENOMEM);
		    return -1;
	    }
    }
    return 0;
}
 

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