summaryrefslogtreecommitdiff
path: root/libc/sysdeps/linux/aarch64/setjmp.S
diff options
context:
space:
mode:
authorWaldemar Brodkorb <wbx@uclibc-ng.org>2016-10-04 06:51:35 +0200
committerWaldemar Brodkorb <wbx@openadk.org>2017-02-01 17:48:38 +0100
commitdba942c80dc2cfa5768a856fff98e22a755fdd27 (patch)
tree371e775cb6dfec085945f6834aeb9d3b6de36fbe /libc/sysdeps/linux/aarch64/setjmp.S
parent9b457baf8d46329f7d7ee2aa084022bb0df88551 (diff)
add experimental aarch64 support
Ported over from GNU C Library and runtime tested in Qemu.
Diffstat (limited to 'libc/sysdeps/linux/aarch64/setjmp.S')
-rw-r--r--libc/sysdeps/linux/aarch64/setjmp.S59
1 files changed, 59 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/aarch64/setjmp.S b/libc/sysdeps/linux/aarch64/setjmp.S
new file mode 100644
index 000000000..b3d616222
--- /dev/null
+++ b/libc/sysdeps/linux/aarch64/setjmp.S
@@ -0,0 +1,59 @@
+/* Copyright (C) 1997-2016 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 <sysdep.h>
+#include <jmpbuf-offsets.h>
+
+ /* Keep traditional entry points in with sigsetjmp(). */
+ENTRY (setjmp)
+ mov x1, #1
+ b 1f
+END (setjmp)
+
+ENTRY (_setjmp)
+ mov x1, #0
+ b 1f
+END (_setjmp)
+libc_hidden_def (_setjmp)
+
+ENTRY (__sigsetjmp)
+
+1:
+ stp x19, x20, [x0, #JB_X19<<3]
+ stp x21, x22, [x0, #JB_X21<<3]
+ stp x23, x24, [x0, #JB_X23<<3]
+ stp x25, x26, [x0, #JB_X25<<3]
+ stp x27, x28, [x0, #JB_X27<<3]
+
+ stp x29, x30, [x0, #JB_X29<<3]
+
+ /* setjmp probe takes 3 arguments, address of jump buffer
+ first argument (8@x0), return value second argument (-4@x1),
+ and target address (8@x30), respectively. */
+ //LIBC_PROBE (setjmp, 3, 8@x0, -4@x1, 8@x30)
+ stp d8, d9, [x0, #JB_D8<<3]
+ stp d10, d11, [x0, #JB_D10<<3]
+ stp d12, d13, [x0, #JB_D12<<3]
+ stp d14, d15, [x0, #JB_D14<<3]
+ mov x2, sp
+ str x2, [x0, #JB_SP<<3]
+
+ b C_SYMBOL_NAME(__sigjmp_save)
+
+END (__sigsetjmp)
+hidden_def (__sigsetjmp)