| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 70/73] ARC: handle gcc generated __builtin_trap for older compiler | Date | Mon, 8 Jul 2019 17:13:20 +0200 |
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From: Vineet Gupta <vgupta@synopsys.com>
commit af1be2e21203867cb958aaceed5366e2e24b88e8 upstream.
ARC gcc prior to GNU 2018.03 release didn't have a target specific __builtin_trap() implementation, generating default abort() call.
Implement the abort() call - emulating what newer gcc does for the same, as suggested by Arnd.
Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- arch/arc/kernel/traps.c | 8 ++++++++ 1 file changed, 8 insertions(+)
--- a/arch/arc/kernel/traps.c +++ b/arch/arc/kernel/traps.c @@ -155,3 +155,11 @@ void do_insterror_or_kprobe(unsigned lon insterror_is_error(address, regs); } + +/* + * abort() call generated by older gcc for __builtin_trap() + */ +void abort(void) +{ + __asm__ __volatile__("trap_s 5\n"); +}
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