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comparison usr/src/cmd/sgs/librtld_db/demo/common/callstack.c @ 12939:a27c46eb192b

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6972234 sgs demo's could use some cleanup
author Rod Evans <Rod.Evans@Sun.COM>
date Tue, 27 Jul 2010 22:49:34 -0700
parents usr/src/cmd/sgs/librtld_db/rdb_demo/common/callstack.c@79e3159504fa
children
comparison
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12938:599476a18982 12939:a27c46eb192b
1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 1995, 2010, Oracle and/or its affiliates. All rights reserved.
24 */
25
26 #include <stdio.h>
27 #include <unistd.h>
28 #include <string.h>
29 #include <sys/types.h>
30 #include <sys/reg.h>
31 #include <sys/frame.h>
32 #include <sys/stack.h>
33 #include <sys/machelf.h>
34 #include <procfs.h>
35
36 #include "rdb.h"
37
38 #ifndef STACK_BIAS
39 #define STACK_BIAS 0
40 #endif
41
42 static int
43 get_frame(struct ps_prochandle *ph, psaddr_t fp, struct frame *frm)
44 {
45 #if defined(_LP64)
46 /*
47 * Use special structures to read a 32-bit process
48 * from a 64-bit process.
49 */
50 if (ph->pp_dmodel == PR_MODEL_ILP32) {
51 struct frame32 frm32;
52
53 if (ps_pread(ph, (psaddr_t)fp, (char *)&frm32,
54 sizeof (struct frame32)) != PS_OK) {
55 (void) printf("stack trace: bad frame pointer: 0x%lx\n",
56 fp);
57 return (-1);
58 }
59
60 frm->fr_savpc = (long)frm32.fr_savpc;
61 #if defined(__sparcv9)
62 frm->fr_savfp = (struct frame *)(uintptr_t)frm32.fr_savfp;
63 #elif defined(__amd64)
64 frm->fr_savfp = (long)frm32.fr_savfp;
65 #endif
66 return (0);
67 }
68 #endif /* defined(_LP64) */
69
70 if (ps_pread(ph, (psaddr_t)fp + STACK_BIAS, (char *)frm,
71 sizeof (struct frame)) != PS_OK) {
72 (void) printf("stack trace: bad frame pointer: 0x%lx\n", fp);
73 return (-1);
74 }
75 return (0);
76 }
77
78 /*
79 * Relatively architecture neutral routine to display the callstack.
80 */
81 void
82 CallStack(struct ps_prochandle *ph)
83 {
84 pstatus_t pstatus;
85 greg_t fp;
86 struct frame frm;
87 char *symstr;
88
89 if (pread(ph->pp_statusfd, &pstatus, sizeof (pstatus), 0) == -1)
90 perr("cs: reading status");
91
92 symstr = print_address_ps(ph, (ulong_t)pstatus.pr_lwp.pr_reg[R_PC],
93 FLG_PAP_SONAME);
94 (void) printf(" 0x%08x:%-17s\n", EC_WORD(pstatus.pr_lwp.pr_reg[R_PC]),
95 symstr);
96
97 fp = pstatus.pr_lwp.pr_reg[R_FP];
98
99 while (fp) {
100 if (get_frame(ph, (psaddr_t)fp, &frm) == -1)
101 return;
102 if (frm.fr_savpc) {
103 symstr = print_address_ps(ph, (ulong_t)frm.fr_savpc,
104 FLG_PAP_SONAME);
105 (void) printf(" 0x%08x:%-17s\n", EC_WORD(frm.fr_savpc),
106 symstr);
107 }
108 fp = (greg_t)frm.fr_savfp;
109 }
110 }