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 <string>
32
33#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
| 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 <string>
32
33#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, StaticInstPtr inst)
| 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 ®, 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}
| 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 ®, 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}
|