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authorVineet Gupta <Vineet.Gupta1@synopsys.com>2016-10-07 14:11:16 -0700
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2016-10-13 21:18:32 +0200
commitd388c3e67f78b414a24550a61b1bab49d7c01883 (patch)
treeef3a6f5b145f2813df2980ce805d7537d09e68fc /libpthread/nptl/sysdeps
parent24ca498fc322936281b0c69c271dd64979c313eb (diff)
ARC: nptl: cancellable wrappers were broken
This was reported as uClibc test suite failures of tst-mqueue3 and tst-mqueue5. The syscall args were getting clobbered, so use scratch regs which are not used for syscall args 00002690 <mq_timedsend>: ; SINGLE_THREAD_P 2690: sub r1,r25,0x448 <--- clobers r1, r2 2698: ld r2,[r1] 269c: cmp r2,0 26a0: bz mq_timedsend_nocancel ; DOCARGS (saves syscall args but r1, r2 clobbered already) 26a4: st.aw blink,[sp,-4] 26a8: st.aw r0,[sp,-4] 26ac: st.aw r1,[sp,-4] 26b0: st.aw r2,[sp,-4] 26b4: st.aw r3,[sp,-4] 26b8: st.aw r4,[sp,-4] 26bc: bl 1e28 <__librt_enable_asynccancel> Reported-by: Eugeniy Paltsev <paltsev@synopsys.com> Cc: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'libpthread/nptl/sysdeps')
-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h
index cddd754a8..918f61d67 100644
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h
@@ -99,9 +99,9 @@
#define UNDOCARGS_7 pop r6` UNDOCARGS_6
# define SINGLE_THREAD_P \
- THREAD_SELF r1 ` \
- ld r2, [r1, MULTIPLE_THREADS_OFFSET]` \
- cmp r2, 0
+ THREAD_SELF r9 ` \
+ ld r10, [r9, MULTIPLE_THREADS_OFFSET]` \
+ cmp r10, 0
/* ld r2, [r1, -TLS_PRE_TCB_SIZE + MULTIPLE_THREADS_OFFSET] */
#else /* !__ASSEMBLER__ */