stacktrace.cc (10417:710ee116eb68) stacktrace.cc (11793:ef606668d247)
1/*
2 * Copyright (c) 2005 The Regents of The University of Michigan
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 are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Nathan Binkert
29 */
30
1/*
2 * Copyright (c) 2005 The Regents of The University of Michigan
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 are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Nathan Binkert
29 */
30
31#include "arch/x86/stacktrace.hh"
32
31#include <string>
32
33#include "arch/x86/isa_traits.hh"
33#include <string>
34
35#include "arch/x86/isa_traits.hh"
34#include "arch/x86/stacktrace.hh"
35#include "arch/x86/vtophys.hh"
36#include "base/bitfield.hh"
37#include "base/trace.hh"
38#include "cpu/base.hh"
39#include "cpu/thread_context.hh"
40#include "mem/fs_translating_port_proxy.hh"
41#include "sim/system.hh"
42
43using namespace std;
44namespace X86ISA
45{
46 ProcessInfo::ProcessInfo(ThreadContext *_tc)
47 : tc(_tc)
48 {
49 Addr addr = 0;
50
51 FSTranslatingPortProxy &vp = tc->getVirtProxy();
52
53 if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_size", addr))
54 panic("thread info not compiled into kernel\n");
55 thread_info_size = vp.readGtoH<int32_t>(addr);
56
57 if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr))
58 panic("thread info not compiled into kernel\n");
59 task_struct_size = vp.readGtoH<int32_t>(addr);
60
61 if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr))
62 panic("thread info not compiled into kernel\n");
63 task_off = vp.readGtoH<int32_t>(addr);
64
65 if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr))
66 panic("thread info not compiled into kernel\n");
67 pid_off = vp.readGtoH<int32_t>(addr);
68
69 if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr))
70 panic("thread info not compiled into kernel\n");
71 name_off = vp.readGtoH<int32_t>(addr);
72 }
73
74 Addr
75 ProcessInfo::task(Addr ksp) const
76 {
77 Addr base = ksp & ~0x3fff;
78 if (base == ULL(0xfffffc0000000000))
79 return 0;
80
81 Addr tsk;
82
83 FSTranslatingPortProxy &vp = tc->getVirtProxy();
84 tsk = vp.readGtoH<Addr>(base + task_off);
85
86 return tsk;
87 }
88
89 int
90 ProcessInfo::pid(Addr ksp) const
91 {
92 Addr task = this->task(ksp);
93 if (!task)
94 return -1;
95
96 uint16_t pd;
97
98 FSTranslatingPortProxy &vp = tc->getVirtProxy();
99 pd = vp.readGtoH<uint16_t>(task + pid_off);
100
101 return pd;
102 }
103
104 string
105 ProcessInfo::name(Addr ksp) const
106 {
107 Addr task = this->task(ksp);
108 if (!task)
109 return "console";
110
111 char comm[256];
112 CopyStringOut(tc, comm, task + name_off, sizeof(comm));
113 if (!comm[0])
114 return "startup";
115
116 return comm;
117 }
118
119 StackTrace::StackTrace()
120 : tc(0), stack(64)
121 {
122 }
123
124 StackTrace::StackTrace(ThreadContext *_tc, const StaticInstPtr &inst)
125 : tc(0), stack(64)
126 {
127 trace(_tc, inst);
128 }
129
130 StackTrace::~StackTrace()
131 {
132 }
133
134 void
135 StackTrace::trace(ThreadContext *_tc, bool is_call)
136 {
137 }
138
139 bool
140 StackTrace::isEntry(Addr addr)
141 {
142 return false;
143 }
144
145 bool
146 StackTrace::decodeStack(MachInst inst, int &disp)
147 {
148 disp = 0;
149 return true;
150 }
151
152 bool
153 StackTrace::decodeSave(MachInst inst, int &reg, int &disp)
154 {
155 reg = 0;
156 disp = 0;
157 return true;
158 }
159
160 /*
161 * Decode the function prologue for the function we're in, and note
162 * which registers are stored where, and how large the stack frame is.
163 */
164 bool
165 StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func,
166 int &size, Addr &ra)
167 {
168 size = 0;
169 ra = 0;
170
171 for (Addr pc = func; pc < callpc; pc += sizeof(MachInst)) {
172 MachInst inst;
173 CopyOut(tc, (uint8_t *)&inst, pc, sizeof(MachInst));
174
175 int reg, disp;
176 if (decodeStack(inst, disp)) {
177 if (size) {
178 // panic("decoding frame size again");
179 return true;
180 }
181 size += disp;
182 } else if (decodeSave(inst, reg, disp)) {
183 if (!ra && reg == ReturnAddressReg) {
184 CopyOut(tc, (uint8_t *)&ra, sp + disp, sizeof(Addr));
185 if (!ra) {
186 // panic("no return address value pc=%#x\n", pc);
187 return false;
188 }
189 }
190 }
191 }
192
193 return true;
194 }
195
196#if TRACING_ON
197 void
198 StackTrace::dump()
199 {
200 StringWrap name(tc->getCpuPtr()->name());
201 SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab;
202
203 DPRINTFN("------ Stack ------\n");
204
205 string symbol;
206 for (int i = 0, size = stack.size(); i < size; ++i) {
207 Addr addr = stack[size - i - 1];
208 if (addr == user)
209 symbol = "user";
210 else if (addr == console)
211 symbol = "console";
212 else if (addr == unknown)
213 symbol = "unknown";
214 else
215 symtab->findSymbol(addr, symbol);
216
217 DPRINTFN("%#x: %s\n", addr, symbol);
218 }
219 }
220#endif
221}
36#include "arch/x86/vtophys.hh"
37#include "base/bitfield.hh"
38#include "base/trace.hh"
39#include "cpu/base.hh"
40#include "cpu/thread_context.hh"
41#include "mem/fs_translating_port_proxy.hh"
42#include "sim/system.hh"
43
44using namespace std;
45namespace X86ISA
46{
47 ProcessInfo::ProcessInfo(ThreadContext *_tc)
48 : tc(_tc)
49 {
50 Addr addr = 0;
51
52 FSTranslatingPortProxy &vp = tc->getVirtProxy();
53
54 if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_size", addr))
55 panic("thread info not compiled into kernel\n");
56 thread_info_size = vp.readGtoH<int32_t>(addr);
57
58 if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr))
59 panic("thread info not compiled into kernel\n");
60 task_struct_size = vp.readGtoH<int32_t>(addr);
61
62 if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr))
63 panic("thread info not compiled into kernel\n");
64 task_off = vp.readGtoH<int32_t>(addr);
65
66 if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr))
67 panic("thread info not compiled into kernel\n");
68 pid_off = vp.readGtoH<int32_t>(addr);
69
70 if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr))
71 panic("thread info not compiled into kernel\n");
72 name_off = vp.readGtoH<int32_t>(addr);
73 }
74
75 Addr
76 ProcessInfo::task(Addr ksp) const
77 {
78 Addr base = ksp & ~0x3fff;
79 if (base == ULL(0xfffffc0000000000))
80 return 0;
81
82 Addr tsk;
83
84 FSTranslatingPortProxy &vp = tc->getVirtProxy();
85 tsk = vp.readGtoH<Addr>(base + task_off);
86
87 return tsk;
88 }
89
90 int
91 ProcessInfo::pid(Addr ksp) const
92 {
93 Addr task = this->task(ksp);
94 if (!task)
95 return -1;
96
97 uint16_t pd;
98
99 FSTranslatingPortProxy &vp = tc->getVirtProxy();
100 pd = vp.readGtoH<uint16_t>(task + pid_off);
101
102 return pd;
103 }
104
105 string
106 ProcessInfo::name(Addr ksp) const
107 {
108 Addr task = this->task(ksp);
109 if (!task)
110 return "console";
111
112 char comm[256];
113 CopyStringOut(tc, comm, task + name_off, sizeof(comm));
114 if (!comm[0])
115 return "startup";
116
117 return comm;
118 }
119
120 StackTrace::StackTrace()
121 : tc(0), stack(64)
122 {
123 }
124
125 StackTrace::StackTrace(ThreadContext *_tc, const StaticInstPtr &inst)
126 : tc(0), stack(64)
127 {
128 trace(_tc, inst);
129 }
130
131 StackTrace::~StackTrace()
132 {
133 }
134
135 void
136 StackTrace::trace(ThreadContext *_tc, bool is_call)
137 {
138 }
139
140 bool
141 StackTrace::isEntry(Addr addr)
142 {
143 return false;
144 }
145
146 bool
147 StackTrace::decodeStack(MachInst inst, int &disp)
148 {
149 disp = 0;
150 return true;
151 }
152
153 bool
154 StackTrace::decodeSave(MachInst inst, int &reg, int &disp)
155 {
156 reg = 0;
157 disp = 0;
158 return true;
159 }
160
161 /*
162 * Decode the function prologue for the function we're in, and note
163 * which registers are stored where, and how large the stack frame is.
164 */
165 bool
166 StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func,
167 int &size, Addr &ra)
168 {
169 size = 0;
170 ra = 0;
171
172 for (Addr pc = func; pc < callpc; pc += sizeof(MachInst)) {
173 MachInst inst;
174 CopyOut(tc, (uint8_t *)&inst, pc, sizeof(MachInst));
175
176 int reg, disp;
177 if (decodeStack(inst, disp)) {
178 if (size) {
179 // panic("decoding frame size again");
180 return true;
181 }
182 size += disp;
183 } else if (decodeSave(inst, reg, disp)) {
184 if (!ra && reg == ReturnAddressReg) {
185 CopyOut(tc, (uint8_t *)&ra, sp + disp, sizeof(Addr));
186 if (!ra) {
187 // panic("no return address value pc=%#x\n", pc);
188 return false;
189 }
190 }
191 }
192 }
193
194 return true;
195 }
196
197#if TRACING_ON
198 void
199 StackTrace::dump()
200 {
201 StringWrap name(tc->getCpuPtr()->name());
202 SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab;
203
204 DPRINTFN("------ Stack ------\n");
205
206 string symbol;
207 for (int i = 0, size = stack.size(); i < size; ++i) {
208 Addr addr = stack[size - i - 1];
209 if (addr == user)
210 symbol = "user";
211 else if (addr == console)
212 symbol = "console";
213 else if (addr == unknown)
214 symbol = "unknown";
215 else
216 symtab->findSymbol(addr, symbol);
217
218 DPRINTFN("%#x: %s\n", addr, symbol);
219 }
220 }
221#endif
222}