diff options
| author | Visa Hankala <visa@cvs.openbsd.org> | 2018-05-04 15:43:35 +0000 |
|---|---|---|
| committer | Visa Hankala <visa@cvs.openbsd.org> | 2018-05-04 15:43:35 +0000 |
| commit | 32d2c95f3d923fab0cb0835981507e8b32f35674 (patch) | |
| tree | d4cee838f7c4c1f2f53d34bd11f9de4af85c56d8 /sys/arch | |
| parent | e52902e4aa718e14d540a7cf10b1ac6e9a105e1b (diff) | |
Add stack trace saving for arm64.
OK guenther@
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/arm64/arm64/db_trace.c | 20 | ||||
| -rw-r--r-- | sys/arch/arm64/include/frame.h | 7 |
2 files changed, 25 insertions, 2 deletions
diff --git a/sys/arch/arm64/arm64/db_trace.c b/sys/arch/arm64/arm64/db_trace.c index f7892e1e96b..f9af3f981de 100644 --- a/sys/arch/arm64/arm64/db_trace.c +++ b/sys/arch/arm64/arm64/db_trace.c @@ -1,4 +1,4 @@ -/* $OpenBSD: db_trace.c,v 1.5 2017/05/30 15:39:04 mpi Exp $ */ +/* $OpenBSD: db_trace.c,v 1.6 2018/05/04 15:43:34 visa Exp $ */ /* $NetBSD: db_trace.c,v 1.8 2003/01/17 22:28:48 thorpej Exp $ */ /* @@ -148,3 +148,21 @@ db_stack_trace_print(db_expr_t addr, int have_addr, db_expr_t count, --count; } } + +void +db_save_stack_trace(struct db_stack_trace *st) +{ + struct callframe *frame; + + frame = __builtin_frame_address(0); + st->st_count = 0; + while (st->st_count < DB_STACK_TRACE_MAX) { + st->st_pc[st->st_count++] = frame->f_lr; + + if (!INKERNEL(frame->f_frame) || frame->f_frame <= frame) + break; + frame = frame->f_frame; + if (!INKERNEL(frame->f_lr)) + break; + } +} diff --git a/sys/arch/arm64/include/frame.h b/sys/arch/arm64/include/frame.h index 4ae1c4f7ec9..72fe913b1d3 100644 --- a/sys/arch/arm64/include/frame.h +++ b/sys/arch/arm64/include/frame.h @@ -1,4 +1,4 @@ -/* $OpenBSD: frame.h,v 1.1 2016/12/17 23:38:33 patrick Exp $ */ +/* $OpenBSD: frame.h,v 1.2 2018/05/04 15:43:34 visa Exp $ */ /* * Copyright (c) 2016 Dale Rahn <drahn@dalerahn.com> * @@ -67,6 +67,11 @@ struct switchframe { register_t sf_lr; }; +struct callframe { + struct callframe *f_frame; + register_t f_lr; +}; + #endif /* !_LOCORE */ #endif /* _MACHINE_FRAME_H_ */ |