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GNU C Library master sources branch master updated. glibc-2.24-643-gb040e1b
- From: jsm28 at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 16 Jan 2017 21:35:08 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.24-643-gb040e1b
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http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=b040e1b0842c35ab444e8502db6ae59389d1e3d5
commit b040e1b0842c35ab444e8502db6ae59389d1e3d5
Author: Joseph Myers <joseph@codesourcery.com>
Date: Mon Jan 16 21:34:48 2017 +0000
Make soft-float powerpc swapcontext restore the signal mask (bug 21045).
The soft-float powerpc version of swapcontext does not restore the
signal mask, resulting in stdlib/tst-setcontext2 failing:
after getcontext
after setcontext
after swapcontext
FAIL: SIGUSR2 is blocked after swapcontext.
This patch fixes this by adjusting the arguments passed to
__sigprocmask so that it restores the saved signal mask as well as
saving the existing one. (For hard-float, this code is only used for
a compat symbol, not for the current version of swapcontext.)
Tested for soft-float powerpc.
[BZ #21045]
* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S
(__CONTEXT_FUNC_NAME): Pass address of signal mask to be restored
to __sigprocmask.
diff --git a/ChangeLog b/ChangeLog
index 9498803..66ce72b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2017-01-16 Joseph Myers <joseph@codesourcery.com>
+
+ [BZ #21045]
+ * sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S
+ (__CONTEXT_FUNC_NAME): Pass address of signal mask to be restored
+ to __sigprocmask.
+
2017-01-16 Chris Metcalf <cmetcalf@mellanox.com>
* sysdeps/tile/tilegx/memchr.c (__memchr): Handle pointer
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S b/sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S
index a0bcbf1..6696d54 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S
@@ -271,7 +271,8 @@ ENTRY(__CONTEXT_FUNC_NAME)
/* Restore ucontext (parm1) from stack. */
lwz r12,_FRAME_PARM_SAVE1(r1)
- li r4,0
+ lwz r4,_FRAME_PARM_SAVE2(r1)
+ addi r4,r4,_UC_SIGMASK
stw r3,_UC_REGS_PTR(r12)
addi r5,r12,_UC_SIGMASK
li r3,SIG_SETMASK
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 7 +++++++
.../linux/powerpc/powerpc32/swapcontext-common.S | 3 ++-
2 files changed, 9 insertions(+), 1 deletions(-)
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