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glibc/aarch64-sigsetjmp.patch

39 lines
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From c272f67f9fc4c354336241ef4f3876771ccab443 Mon Sep 17 00:00:00 2001
From: Andreas Schwab <schwab@suse.de>
Date: Mon, 20 May 2013 10:19:31 +0200
Subject: [PATCH] AArch64: Don't clobber argument for tail call to
__sigjmp_save in sigsetjmp
[BZ #15493]
* sysdeps/aarch64/setjmp.S (__sigsetjmp): Don't clobber register
x1.
[NOT_IN_libc && IS_IN_rtld]: Don't call __sigjmp_save.
---
ports/sysdeps/aarch64/setjmp.S | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/ports/sysdeps/aarch64/setjmp.S b/ports/sysdeps/aarch64/setjmp.S
index cff81c7..10e0709 100644
--- a/ports/sysdeps/aarch64/setjmp.S
+++ b/ports/sysdeps/aarch64/setjmp.S
@@ -44,8 +44,14 @@ ENTRY (__sigsetjmp)
stp d10, d11, [x0, #JB_D10<<3]
stp d12, d13, [x0, #JB_D12<<3]
stp d14, d15, [x0, #JB_D14<<3]
- mov x1, sp
- str x1, [x0, #JB_SP<<3]
+ mov x2, sp
+ str x2, [x0, #JB_SP<<3]
+#if defined NOT_IN_libc && defined IS_IN_rtld
+ /* In ld.so we never save the signal mask */
+ mov w0, #0
+ RET
+#else
b C_SYMBOL_NAME(__sigjmp_save)
+#endif
END (__sigsetjmp)
hidden_def (__sigsetjmp)
--
1.8.2.3