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| author | Qing Zhang <zhangqing@loongson.cn> | 2022-08-06 16:10:03 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2022-08-12 13:10:11 +0800 |
| commit | 49aef111e2dae176a7708b532118f33f24289248 (patch) | |
| tree | 394ff32e5dba1e22ebac5015fe3164e7ed2e8a77 /arch/loongarch/kernel/Makefile | |
| parent | 49232773d8233ed70c4998851bc84e465fc1c788 (diff) | |
LoongArch: Add prologue unwinder support
It unwind the stack frame based on prologue code analyze.
CONFIG_KALLSYMS is needed, at least the address and length
of each function.
Three stages when we do unwind,
1) unwind_start(), the prapare of unwinding, fill unwind_state.
2) unwind_done(), judge whether the unwind process is finished or not.
3) unwind_next_frame(), unwind the next frame.
Dividing unwinder helps to add new unwinders in the future, e.g.:
unwinder_frame, unwinder_orc, .etc.
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/kernel/Makefile')
| -rw-r--r-- | arch/loongarch/kernel/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/loongarch/kernel/Makefile b/arch/loongarch/kernel/Makefile index c5fa4adb23b6..918600e7b30f 100644 --- a/arch/loongarch/kernel/Makefile +++ b/arch/loongarch/kernel/Makefile @@ -23,5 +23,6 @@ obj-$(CONFIG_SMP) += smp.o obj-$(CONFIG_NUMA) += numa.o obj-$(CONFIG_UNWINDER_GUESS) += unwind_guess.o +obj-$(CONFIG_UNWINDER_PROLOGUE) += unwind_prologue.o CPPFLAGS_vmlinux.lds := $(KBUILD_CFLAGS) |