summaryrefslogtreecommitdiff
path: root/libc/sysdeps/linux/powerpc/brk.S
diff options
context:
space:
mode:
Diffstat (limited to 'libc/sysdeps/linux/powerpc/brk.S')
-rw-r--r--libc/sysdeps/linux/powerpc/brk.S59
1 files changed, 59 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/powerpc/brk.S b/libc/sysdeps/linux/powerpc/brk.S
new file mode 100644
index 000000000..57a8fb838
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/brk.S
@@ -0,0 +1,59 @@
+/* brk system call for Linux/ppc.
+ Copyright (C) 1995, 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include "ppc_asm.h"
+#define _ERRNO_H 1
+#include <bits/errno.h>
+#include <sys/syscall.h>
+
+#ifdef __NR_brk
+ .comm ___brk_addr,4,4
+ .section ".text"
+.globl __brk;
+.type __brk, @function;
+.align 2;
+
+__brk:
+ stwu r1,-16(r1)
+ stw r3,8(r1)
+ li 0, __NR_brk;
+ sc
+ lwz r6,8(r1)
+#ifdef PIC
+ mflr r4
+ bl _GLOBAL_OFFSET_TABLE_@local-4
+ mflr r5
+ lwz r5,___brk_addr@got(r5)
+ mtlr r4
+ stw r3,0(r5)
+#else
+ lis r4,___brk_addr@ha
+ stw r3,___brk_addr@l(r4)
+#endif
+ cmplw r6,r3
+ addi r1,r1,16
+ li r3,0
+ blelr+
+ li r3,ENOMEM
+ b __syscall_error
+.size __brk,.-__brk
+
+.weak brk;
+brk=__brk
+#endif