1/* 2 * Copyright (c) 2004 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h>
| 1/* 2 * Copyright (c) 2004 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h>
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28__FBSDID("$FreeBSD: head/gnu/usr.bin/gdb/kgdb/kthr.c 203823 2010-02-13 11:47:04Z avg $");
| 28__FBSDID("$FreeBSD: head/gnu/usr.bin/gdb/kgdb/kthr.c 210852 2010-08-04 21:02:04Z jhb $");
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29 30#include <sys/param.h> 31#include <sys/proc.h> 32#include <sys/types.h> 33#include <sys/signal.h> 34#include <err.h> 35#include <inttypes.h> 36#include <kvm.h> 37#include <stdio.h> 38#include <stdlib.h> 39#include <string.h> 40 41#include <defs.h> 42#include <frame-unwind.h> 43 44#include "kgdb.h" 45#include <machine/pcb.h> 46
| 29 30#include <sys/param.h> 31#include <sys/proc.h> 32#include <sys/types.h> 33#include <sys/signal.h> 34#include <err.h> 35#include <inttypes.h> 36#include <kvm.h> 37#include <stdio.h> 38#include <stdlib.h> 39#include <string.h> 40 41#include <defs.h> 42#include <frame-unwind.h> 43 44#include "kgdb.h" 45#include <machine/pcb.h> 46
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47static uintptr_t dumppcb;
| 47static CORE_ADDR dumppcb;
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48static int dumptid; 49
| 48static int dumptid; 49
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50static uintptr_t stoppcbs;
| 50static CORE_ADDR stoppcbs;
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51static __cpumask_t stopped_cpus; 52 53static struct kthr *first; 54struct kthr *curkthr; 55
| 51static __cpumask_t stopped_cpus; 52 53static struct kthr *first; 54struct kthr *curkthr; 55
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56uintptr_t
| 56CORE_ADDR
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57kgdb_lookup(const char *sym) 58{
| 57kgdb_lookup(const char *sym) 58{
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59 struct nlist nl[2];
| 59 CORE_ADDR addr; 60 char *name;
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60
| 61
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61 nl[0].n_type = N_UNDF; 62 nl[0].n_name = (char *)(uintptr_t)sym; 63 nl[1].n_name = NULL; 64 if (kvm_nlist(kvm, nl) != 0) 65 return (0); 66 return (nl[0].n_value);
| 62 asprintf(&name, "&%s", sym); 63 addr = kgdb_parse(name); 64 free(name); 65 return (addr);
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67} 68 69struct kthr * 70kgdb_thr_first(void) 71{ 72 return (first); 73} 74 75struct kthr * 76kgdb_thr_init(void) 77{ 78 struct proc p; 79 struct thread td; 80 struct kthr *kt;
| 66} 67 68struct kthr * 69kgdb_thr_first(void) 70{ 71 return (first); 72} 73 74struct kthr * 75kgdb_thr_init(void) 76{ 77 struct proc p; 78 struct thread td; 79 struct kthr *kt;
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81 uintptr_t addr, paddr;
| 80 CORE_ADDR addr; 81 uintptr_t paddr;
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82 83 while (first != NULL) { 84 kt = first; 85 first = kt->next; 86 free(kt); 87 } 88
| 82 83 while (first != NULL) { 84 kt = first; 85 first = kt->next; 86 free(kt); 87 } 88
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89 addr = kgdb_lookup("_allproc"); 90 if (addr == 0) { 91 warnx("kvm_nlist(_allproc): %s", kvm_geterr(kvm));
| 89 addr = kgdb_lookup("allproc"); 90 if (addr == 0)
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92 return (NULL);
| 91 return (NULL);
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93 }
| |
94 kvm_read(kvm, addr, &paddr, sizeof(paddr)); 95
| 92 kvm_read(kvm, addr, &paddr, sizeof(paddr)); 93
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96 dumppcb = kgdb_lookup("_dumppcb"); 97 if (dumppcb == 0) { 98 warnx("kvm_nlist(_dumppcb): %s", kvm_geterr(kvm));
| 94 dumppcb = kgdb_lookup("dumppcb"); 95 if (dumppcb == 0)
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99 return (NULL);
| 96 return (NULL);
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100 }
| |
101
| 97
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102 addr = kgdb_lookup("_dumptid");
| 98 addr = kgdb_lookup("dumptid");
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103 if (addr != 0) 104 kvm_read(kvm, addr, &dumptid, sizeof(dumptid)); 105 else 106 dumptid = -1; 107
| 99 if (addr != 0) 100 kvm_read(kvm, addr, &dumptid, sizeof(dumptid)); 101 else 102 dumptid = -1; 103
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108 addr = kgdb_lookup("_stopped_cpus");
| 104 addr = kgdb_lookup("stopped_cpus");
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109 if (addr != 0) 110 kvm_read(kvm, addr, &stopped_cpus, sizeof(stopped_cpus)); 111 else 112 stopped_cpus = 0; 113
| 105 if (addr != 0) 106 kvm_read(kvm, addr, &stopped_cpus, sizeof(stopped_cpus)); 107 else 108 stopped_cpus = 0; 109
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114 stoppcbs = kgdb_lookup("_stoppcbs");
| 110 stoppcbs = kgdb_lookup("stoppcbs");
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115 116 while (paddr != 0) { 117 if (kvm_read(kvm, paddr, &p, sizeof(p)) != sizeof(p)) { 118 warnx("kvm_read: %s", kvm_geterr(kvm)); 119 break; 120 } 121 addr = (uintptr_t)TAILQ_FIRST(&p.p_threads); 122 while (addr != 0) { 123 if (kvm_read(kvm, addr, &td, sizeof(td)) != 124 sizeof(td)) { 125 warnx("kvm_read: %s", kvm_geterr(kvm)); 126 break; 127 } 128 kt = malloc(sizeof(*kt)); 129 kt->next = first; 130 kt->kaddr = addr; 131 if (td.td_tid == dumptid) 132 kt->pcb = dumppcb; 133 else if (td.td_state == TDS_RUNNING && ((1 << td.td_oncpu) & stopped_cpus) 134 && stoppcbs != 0) 135 kt->pcb = (uintptr_t) stoppcbs + sizeof(struct pcb) * td.td_oncpu; 136 else 137 kt->pcb = (uintptr_t)td.td_pcb; 138 kt->kstack = td.td_kstack; 139 kt->tid = td.td_tid; 140 kt->pid = p.p_pid; 141 kt->paddr = paddr; 142 kt->cpu = td.td_oncpu; 143 first = kt; 144 addr = (uintptr_t)TAILQ_NEXT(&td, td_plist); 145 } 146 paddr = (uintptr_t)LIST_NEXT(&p, p_list); 147 } 148 curkthr = kgdb_thr_lookup_tid(dumptid); 149 if (curkthr == NULL) 150 curkthr = first; 151 return (first); 152} 153 154struct kthr * 155kgdb_thr_lookup_tid(int tid) 156{ 157 struct kthr *kt; 158 159 kt = first; 160 while (kt != NULL && kt->tid != tid) 161 kt = kt->next; 162 return (kt); 163} 164 165struct kthr * 166kgdb_thr_lookup_taddr(uintptr_t taddr) 167{ 168 struct kthr *kt; 169 170 kt = first; 171 while (kt != NULL && kt->kaddr != taddr) 172 kt = kt->next; 173 return (kt); 174} 175 176struct kthr * 177kgdb_thr_lookup_pid(int pid) 178{ 179 struct kthr *kt; 180 181 kt = first; 182 while (kt != NULL && kt->pid != pid) 183 kt = kt->next; 184 return (kt); 185} 186 187struct kthr * 188kgdb_thr_lookup_paddr(uintptr_t paddr) 189{ 190 struct kthr *kt; 191 192 kt = first; 193 while (kt != NULL && kt->paddr != paddr) 194 kt = kt->next; 195 return (kt); 196} 197 198struct kthr * 199kgdb_thr_next(struct kthr *kt) 200{ 201 return (kt->next); 202} 203 204struct kthr * 205kgdb_thr_select(struct kthr *kt) 206{ 207 struct kthr *pcur; 208 209 pcur = curkthr; 210 curkthr = kt; 211 return (pcur); 212} 213 214char * 215kgdb_thr_extra_thread_info(int tid) 216{ 217 char comm[MAXCOMLEN + 1]; 218 char td_name[MAXCOMLEN + 1]; 219 struct kthr *kt; 220 struct proc *p; 221 struct thread *t; 222 static char buf[64]; 223 224 kt = kgdb_thr_lookup_tid(tid); 225 if (kt == NULL) 226 return (NULL); 227 snprintf(buf, sizeof(buf), "PID=%d", kt->pid); 228 p = (struct proc *)kt->paddr; 229 if (kvm_read(kvm, (uintptr_t)&p->p_comm[0], &comm, sizeof(comm)) != 230 sizeof(comm)) 231 return (buf); 232 strlcat(buf, ": ", sizeof(buf)); 233 strlcat(buf, comm, sizeof(buf)); 234 t = (struct thread *)kt->kaddr; 235 if (kvm_read(kvm, (uintptr_t)&t->td_name[0], &td_name, 236 sizeof(td_name)) == sizeof(td_name) && 237 strcmp(comm, td_name) != 0) { 238 strlcat(buf, "/", sizeof(buf)); 239 strlcat(buf, td_name, sizeof(buf)); 240 } 241 return (buf); 242}
| 111 112 while (paddr != 0) { 113 if (kvm_read(kvm, paddr, &p, sizeof(p)) != sizeof(p)) { 114 warnx("kvm_read: %s", kvm_geterr(kvm)); 115 break; 116 } 117 addr = (uintptr_t)TAILQ_FIRST(&p.p_threads); 118 while (addr != 0) { 119 if (kvm_read(kvm, addr, &td, sizeof(td)) != 120 sizeof(td)) { 121 warnx("kvm_read: %s", kvm_geterr(kvm)); 122 break; 123 } 124 kt = malloc(sizeof(*kt)); 125 kt->next = first; 126 kt->kaddr = addr; 127 if (td.td_tid == dumptid) 128 kt->pcb = dumppcb; 129 else if (td.td_state == TDS_RUNNING && ((1 << td.td_oncpu) & stopped_cpus) 130 && stoppcbs != 0) 131 kt->pcb = (uintptr_t) stoppcbs + sizeof(struct pcb) * td.td_oncpu; 132 else 133 kt->pcb = (uintptr_t)td.td_pcb; 134 kt->kstack = td.td_kstack; 135 kt->tid = td.td_tid; 136 kt->pid = p.p_pid; 137 kt->paddr = paddr; 138 kt->cpu = td.td_oncpu; 139 first = kt; 140 addr = (uintptr_t)TAILQ_NEXT(&td, td_plist); 141 } 142 paddr = (uintptr_t)LIST_NEXT(&p, p_list); 143 } 144 curkthr = kgdb_thr_lookup_tid(dumptid); 145 if (curkthr == NULL) 146 curkthr = first; 147 return (first); 148} 149 150struct kthr * 151kgdb_thr_lookup_tid(int tid) 152{ 153 struct kthr *kt; 154 155 kt = first; 156 while (kt != NULL && kt->tid != tid) 157 kt = kt->next; 158 return (kt); 159} 160 161struct kthr * 162kgdb_thr_lookup_taddr(uintptr_t taddr) 163{ 164 struct kthr *kt; 165 166 kt = first; 167 while (kt != NULL && kt->kaddr != taddr) 168 kt = kt->next; 169 return (kt); 170} 171 172struct kthr * 173kgdb_thr_lookup_pid(int pid) 174{ 175 struct kthr *kt; 176 177 kt = first; 178 while (kt != NULL && kt->pid != pid) 179 kt = kt->next; 180 return (kt); 181} 182 183struct kthr * 184kgdb_thr_lookup_paddr(uintptr_t paddr) 185{ 186 struct kthr *kt; 187 188 kt = first; 189 while (kt != NULL && kt->paddr != paddr) 190 kt = kt->next; 191 return (kt); 192} 193 194struct kthr * 195kgdb_thr_next(struct kthr *kt) 196{ 197 return (kt->next); 198} 199 200struct kthr * 201kgdb_thr_select(struct kthr *kt) 202{ 203 struct kthr *pcur; 204 205 pcur = curkthr; 206 curkthr = kt; 207 return (pcur); 208} 209 210char * 211kgdb_thr_extra_thread_info(int tid) 212{ 213 char comm[MAXCOMLEN + 1]; 214 char td_name[MAXCOMLEN + 1]; 215 struct kthr *kt; 216 struct proc *p; 217 struct thread *t; 218 static char buf[64]; 219 220 kt = kgdb_thr_lookup_tid(tid); 221 if (kt == NULL) 222 return (NULL); 223 snprintf(buf, sizeof(buf), "PID=%d", kt->pid); 224 p = (struct proc *)kt->paddr; 225 if (kvm_read(kvm, (uintptr_t)&p->p_comm[0], &comm, sizeof(comm)) != 226 sizeof(comm)) 227 return (buf); 228 strlcat(buf, ": ", sizeof(buf)); 229 strlcat(buf, comm, sizeof(buf)); 230 t = (struct thread *)kt->kaddr; 231 if (kvm_read(kvm, (uintptr_t)&t->td_name[0], &td_name, 232 sizeof(td_name)) == sizeof(td_name) && 233 strcmp(comm, td_name) != 0) { 234 strlcat(buf, "/", sizeof(buf)); 235 strlcat(buf, td_name, sizeof(buf)); 236 } 237 return (buf); 238}
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