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csky: Fixup libgcc unwind error 

The struct rt_sigframe is also defined in libgcc/config/csky/linux-unwind.h
of gcc. Although there is no use for the first three word space, we must
keep them the same with linux-unwind.h for member position.

The BUG is found in glibc test with the tst-cancel02.
The BUG is from commit:bf2416829362 of linux-5.2-rc1 merge window.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Signed-off-by: Mao Han <han_mao@c-sky.com>
Cc: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Guo Ren 2019-06-26 11:27:03 +08:00
parent 9e0babf2c0
commit 19e5e2ae9c
1 changed files with 5 additions and 0 deletions
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5
arch/csky/kernel/signal.c
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@ -39,6 +39,11 @@ static int save_fpu_state(struct sigcontext __user *sc)
#endif
struct rt_sigframe {
/*
* pad[3] is compatible with the same struct defined in
* gcc/libgcc/config/csky/linux-unwind.h
*/
int pad[3];
struct siginfo info;
struct ucontext uc;
};