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ARM: Add r3 to clobber list when configuring stack guard

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If you enable HW_STACK_PROTECTION, DEBUG_OPTIMIZATIONS, and
CPU_STATS, you can get a crash when switching to the main thread
due to the r3 getting munged during a inline ASM call.  This patch
fixes that by adding r3 to the clobber list.

Fixes #12821

Signed-off-by: Andy Gross <andy.gross@linaro.org>
This commit is contained in:
Andy Gross 2019-01-29 15:14:24 +01:00 committed by Kumar Gala
parent c96c90acf7
commit 4d2459e515
1 changed files with 1 additions and 1 deletions
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2
arch/arm/include/kernel_arch_func.h
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@ -125,7 +125,7 @@ _arch_switch_to_main_thread(struct k_thread *main_thread,
"r"(_main), "r"(_thread_entry),
"r"(main_thread)
: "r0", "r1", "sp"
: "r0", "r1", "r3", "sp"
);
CODE_UNREACHABLE;