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/* brk on H8/300 by ysato */
/*
* Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
*
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#include <errno.h>
#include <unistd.h>
#include <sys/syscall.h>
/* This must be initialized data because commons can't have aliases. */
void *__curbrk attribute_hidden = 0;
/* libc_hidden_proto(brk) */
int brk (void *addr)
{
void *newbrk;
__asm__ ("mov.l %2,er1\n\t"
"mov.l %1,er0\n\t"
"trapa #0\n\t"
"mov.l er0,%0"
: "=r" (newbrk)
: "0" (__NR_brk), "g" (addr)
: "er0","er1");
__curbrk = newbrk;
if (newbrk < addr)
{
__set_errno (ENOMEM);
return -1;
}
return 0;
}
libc_hidden_def(brk)
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