This was reported as uClicb test suite failures of tst-mqueue3,
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 at synopsys.com>
Cc: Alexey Brodkin <abrodkin at synopsys.com>
Signed-off-by: Vineet Gupta <vgupta at synopsys.com>
---
libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h | 6 +++---
1 file 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 cddd754a8680..918f61d67548 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__ */
--
2.7.4
