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authorWaldemar Brodkorb <wbx@openadk.org>2017-05-24 20:49:02 +0200
committerWaldemar Brodkorb <wbx@openadk.org>2017-06-23 23:46:04 +0200
commit041cdc2769407c4d3869b218ad7ee7638e1c306e (patch)
tree1ea25250d74dcb230cf5feee99226fc080dbd678 /libc/sysdeps/linux/sparc64/__longjmp.S
parent58a5ba12bffad5916d9897c2870fc483f1db8282 (diff)
sparc64: add basic support
No NPTL, no LDSO support. Bootup with Busybox Ash in Qemu working. Testuite shows only two failures, but mksh continue/break support doesn't work.
Diffstat (limited to 'libc/sysdeps/linux/sparc64/__longjmp.S')
-rw-r--r--libc/sysdeps/linux/sparc64/__longjmp.S40
1 files changed, 40 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/sparc64/__longjmp.S b/libc/sysdeps/linux/sparc64/__longjmp.S
new file mode 100644
index 000000000..79cefcc9d
--- /dev/null
+++ b/libc/sysdeps/linux/sparc64/__longjmp.S
@@ -0,0 +1,40 @@
+/* Copyright (C) 1997-2017 Free Software Foundation, Inc.
+ Contributed by Richard Henderson (rth@tamu.edu).
+
+ 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>
+
+/* Offsets into the jmp_buf structure. */
+
+#define O_mask_was_saved 512
+#define O_gregs 32
+#define O_g1 (O_gregs + 4*8)
+
+ENTRY(__longjmp)
+
+ /* Modify the context with the value we want to return. */
+ movre %o1, 1, %o1
+ stx %o1, [%o0 + O_g1]
+
+ /* Let setcontext know if we want to modify the current sigmask. */
+ ld [%o0 + O_mask_was_saved], %o1
+
+ /* And bamf back to where we belong! */
+ ta 0x6f
+
+END(__longjmp)
+
+libc_hidden_def (__longjmp)