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authorAndreas Schwab <schwab@linux-m68k.org>2014-02-10 20:05:01 +0100
committerAndreas Schwab <schwab@linux-m68k.org>2014-02-10 20:22:40 +0100
commit73588a7223bec40d652fd4c75f1cb4772c5d2612 (patch)
treedfc1f1965e78e62e611199d91c482d1b76ff109d /sysdeps/unix/sysv/linux/m68k/brk.c
parent87569616d27a2c742f87b5dbcac2f2e3437fd874 (diff)
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Move m68k from ports to libc
Diffstat (limited to 'sysdeps/unix/sysv/linux/m68k/brk.c')
-rw-r--r--sysdeps/unix/sysv/linux/m68k/brk.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/m68k/brk.c b/sysdeps/unix/sysv/linux/m68k/brk.c
new file mode 100644
index 0000000000..a5b7ca028c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/m68k/brk.c
@@ -0,0 +1,47 @@
+/* brk system call for Linux/m68k.
+ Copyright (C) 1996-2014 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sysdep.h>
+
+void *__curbrk = 0;
+
+/* Old braindamage in GCC's crtstuff.c requires this symbol in an attempt
+ to work around different old braindamage in the old Linux/x86 ELF
+ dynamic linker. Sigh. */
+weak_alias (__curbrk, ___brk_addr)
+
+int
+__brk (void *addr)
+{
+ void *newbrk;
+
+ INTERNAL_SYSCALL_DECL (err);
+ newbrk = (void *) INTERNAL_SYSCALL (brk, err, 1, addr);
+ __curbrk = newbrk;
+
+ if (newbrk < addr)
+ {
+ __set_errno (ENOMEM);
+ return -1;
+ }
+
+ return 0;
+}
+weak_alias (__brk, brk)