From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Wed, 17 Jan 2024 13:38:09 +0000 (-0300)
Subject: sparc64: Remove unwind information from signal return stubs [BZ#31244]
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0e383d2d4e7c08b36ad3edb30c072a3dc4d26ed8;p=thirdparty%2Fglibc.git

sparc64: Remove unwind information from signal return stubs [BZ#31244]

Similar to sparc32 fix, remove the unwind information on the signal
return stubs.  This fixes the regressions:

FAIL: nptl/tst-cancel24-static
FAIL: nptl/tst-cond8-static
FAIL: nptl/tst-mutex8-static
FAIL: nptl/tst-mutexpi8-static
FAIL: nptl/tst-mutexpi9

On sparc64-linux-gnu.

(cherry picked from commit 369efd817780276dbe0ecf8be6e1f354bdbc9857)
---

diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/sigreturn_stub.S b/sysdeps/unix/sysv/linux/sparc/sparc64/sigreturn_stub.S
index 7fac04f6579..f089bcaf68d 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/sigreturn_stub.S
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/sigreturn_stub.S
@@ -23,7 +23,10 @@
 
    [1] https://lkml.org/lkml/2016/5/27/465  */
 
-ENTRY (__rt_sigreturn_stub)
+	nop
+	nop
+
+ENTRY_NOCFI (__rt_sigreturn_stub)
 	mov	__NR_rt_sigreturn, %g1
 	ta	0x6d
-END (__rt_sigreturn_stub)
+END_NOCFI (__rt_sigreturn_stub)