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| -rw-r--r-- | arch/arm64/include/asm/stacktrace/common.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/stacktrace/common.h b/arch/arm64/include/asm/stacktrace/common.h index 4b632141d91c..45474b383630 100644 --- a/arch/arm64/include/asm/stacktrace/common.h +++ b/arch/arm64/include/asm/stacktrace/common.h @@ -2,6 +2,21 @@ /* * Common arm64 stack unwinder code. * + * To implement a new arm64 stack unwinder: + * 1) Include this header + * + * 2) Provide implementations for the following functions: + * on_overflow_stack(): Returns true if SP is on the overflow + * stack. + * on_accessible_stack(): Returns true is SP is on any accessible + * stack. + * unwind_next(): Performs validation checks on the frame + * pointer, and transitions unwind_state + * to the next frame. + * + * See: arch/arm64/include/asm/stacktrace.h for reference + * implementations. + * * Copyright (C) 2012 ARM Ltd. */ #ifndef __ASM_STACKTRACE_COMMON_H |