diff options
| author |   uwe <uwe@openbsd.org> | 2006-11-28 18:56:17 +0000 |
|---|---|---|
| committer | uwe <uwe@openbsd.org> | 2006-11-28 18:56:17 +0000 |
| commit | 20d7efdce3ea0f3c8970df03ae70a4d1cc4ac14c (patch) | |
| tree | b875a5ca9359652f180892a7d764d477f8913092 | |
| parent | fix the installation guide of the Thecus boxes by (diff) | |
| download | wireguard-openbsd-20d7efdce3ea0f3c8970df03ae70a4d1cc4ac14c.tar.xz wireguard-openbsd-20d7efdce3ea0f3c8970df03ae70a4d1cc4ac14c.zip | |
Support "trace /p <pid>" to show the stack trace of any process.
(Keep in mind that $radix is 0x10 by default.); ok by many
| -rw-r--r-- | share/man/man4/ddb.4 | 13 | ||||
| -rw-r--r-- | sys/arch/i386/i386/db_trace.c | 15 |
2 files changed, 25 insertions, 3 deletions
diff --git a/share/man/man4/ddb.4 b/share/man/man4/ddb.4 index cee0a3f8e33..28598799f30 100644 --- a/share/man/man4/ddb.4 +++ b/share/man/man4/ddb.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: ddb.4,v 1.47 2006/07/06 18:16:19 miod Exp $ +.\" $OpenBSD: ddb.4,v 1.48 2006/11/28 18:56:17 uwe Exp $ .\" $NetBSD: ddb.4,v 1.5 1994/11/30 16:22:09 jtc Exp $ .\" .\" Mach Operating System @@ -531,12 +531,21 @@ command is a synonym for .\" -------------------- .It Xo .Ic trace -.Op Cm /u +.Op Cm /pu .Op Ar frameaddr Ns .Op Ic \&, Ns Ar count .Xc Show the stack trace. The +.Cm /p +modifier interprets the +.Ar frameaddr +argument as the PID of a process and shows the stack trace of +that process. +The +.Cm /p +modifier is not supported on all platforms. +The .Cm /u modifier shows the stack trace of user space; if omitted, the kernel stack is traced instead. diff --git a/sys/arch/i386/i386/db_trace.c b/sys/arch/i386/i386/db_trace.c index 81ab9296920..8bff4455178 100644 --- a/sys/arch/i386/i386/db_trace.c +++ b/sys/arch/i386/i386/db_trace.c @@ -1,4 +1,4 @@ -/* $OpenBSD: db_trace.c,v 1.12 2006/09/19 11:06:33 jsg Exp $ */ +/* $OpenBSD: db_trace.c,v 1.13 2006/11/28 18:56:17 uwe Exp $ */ /* $NetBSD: db_trace.c,v 1.18 1996/05/03 19:42:01 christos Exp $ */ /* @@ -30,6 +30,7 @@ #include <sys/param.h> #include <sys/systm.h> #include <sys/proc.h> +#include <sys/user.h> #include <machine/db_machdep.h> @@ -184,6 +185,7 @@ db_stack_trace_print(db_expr_t addr, boolean_t have_addr, db_expr_t count, int is_trap = 0; boolean_t kernel_only = TRUE; boolean_t trace_thread = FALSE; + boolean_t trace_proc = FALSE; #if 0 if (!db_trace_symbols_found) @@ -197,6 +199,8 @@ db_stack_trace_print(db_expr_t addr, boolean_t have_addr, db_expr_t count, while ((c = *cp++) != 0) { if (c == 't') trace_thread = TRUE; + if (c == 'p') + trace_proc = TRUE; if (c == 'u') kernel_only = FALSE; } @@ -210,6 +214,15 @@ db_stack_trace_print(db_expr_t addr, boolean_t have_addr, db_expr_t count, callpc = (db_addr_t)ddb_regs.tf_eip; } else if (trace_thread) { (*pr) ("db_trace.c: can't trace thread\n"); + } else if (trace_proc) { + struct proc *p = pfind((pid_t)addr); + if (p == NULL) { + (*pr) ("db_trace.c: process not found\n"); + return; + } + frame = (struct i386_frame *)p->p_addr->u_pcb.pcb_ebp; + callpc = (db_addr_t) + db_get_value((int)&frame->f_retaddr, 4, FALSE); } else { frame = (struct i386_frame *)addr; callpc = (db_addr_t) |