| Message ID | 1427373424-13935-1-git-send-email-vgupta@synopsys.com |
|---|---|
| State | Accepted |
| Commit | d3c60fc490d714d7610a91555cec67952409b189 |
| Headers | show |
diff --git a/libc/sysdeps/linux/arc/sigaction.c b/libc/sysdeps/linux/arc/sigaction.c index 4a4c9e2d0821..67ca38acacca 100644 --- a/libc/sysdeps/linux/arc/sigaction.c +++ b/libc/sysdeps/linux/arc/sigaction.c @@ -13,7 +13,8 @@ /* * Default sigretrun stub if user doesn't specify SA_RESTORER */ -static void __default_rt_sa_restorer(void) +static void attribute_optimize("Os") __attribute_noinline__ +__default_rt_sa_restorer(void) { INTERNAL_SYSCALL_NCS(__NR_rt_sigreturn, , 0); }
when building uClibc with -O0 (DODEBUG build) the default sigrestorer had some extra glue code generated for stack manipulation which was messing up resume from signal path. So annotate the function with -Os so that gcc would only generate the bare min 2 instruction TRAP sequence Reported-and-Debugged-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> --- libc/sysdeps/linux/arc/sigaction.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)