From bd67557464c2cf89e239da1f11c5d8905ee18f01 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Fri, 8 Dec 2017 08:45:57 -0800 Subject: ARC: handle gcc generated __builtin_trap for older compiler 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 Signed-off-by: Vineet Gupta Signed-off-by: Greg Kroah-Hartman --- arch/arc/kernel/traps.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/arc/kernel/traps.c') diff --git a/arch/arc/kernel/traps.c b/arch/arc/kernel/traps.c index c927aa84e652..2fb0cd39a31c 100644 --- a/arch/arc/kernel/traps.c +++ b/arch/arc/kernel/traps.c @@ -155,3 +155,11 @@ void do_insterror_or_kprobe(unsigned long address, struct pt_regs *regs) insterror_is_error(address, regs); } + +/* + * abort() call generated by older gcc for __builtin_trap() + */ +void abort(void) +{ + __asm__ __volatile__("trap_s 5\n"); +} -- cgit v1.2.3 From 9c9b259802937e8eae4300180e5558f10ecbdd3c Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Thu, 19 Sep 2019 13:58:47 -0700 Subject: ARC: export "abort" for modules This is a custom patch (no mainline equivalent) for stable backport only to address 0-Day kernel test infra ARC 4.x.y builds errors. The reason for this custom patch as that it is a single patch, touches only ARC, vs. atleast two 7c2c11b208be09c1, dc8635b78cd8669 which touch atleast 3 other arches (one long removed) and could potentially have a fallout. Reported-by: kbuild test robot CC: stable@vger.kernel.org # 4.4, 4.9 Signed-off-by: Vineet Gupta Signed-off-by: Greg Kroah-Hartman --- arch/arc/kernel/traps.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arc/kernel/traps.c') diff --git a/arch/arc/kernel/traps.c b/arch/arc/kernel/traps.c index 2fb0cd39a31c..cd6e3615e3d1 100644 --- a/arch/arc/kernel/traps.c +++ b/arch/arc/kernel/traps.c @@ -163,3 +163,4 @@ void abort(void) { __asm__ __volatile__("trap_s 5\n"); } +EXPORT_SYMBOL(abort); -- cgit v1.2.3