2 * Copyright (c) 2005 The Regents of The University of Michigan
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.
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.
28 * Authors: Nathan Binkert
31 #include "arch/x86/stacktrace.hh"
35 #include "arch/x86/isa_traits.hh"
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"
48 readSymbol(ThreadContext
*tc
, const std::string name
)
50 PortProxy
&vp
= tc
->getVirtProxy();
51 SymbolTable
*symtab
= tc
->getSystemPtr()->kernelSymtab
;
54 if (!symtab
->findAddress(name
, addr
))
55 panic("thread info not compiled into kernel\n");
57 return vp
.read
<int32_t>(addr
, GuestByteOrder
);
60 ProcessInfo::ProcessInfo(ThreadContext
*_tc
) : tc(_tc
)
62 thread_info_size
= readSymbol(tc
, "thread_info_size");
63 task_struct_size
= readSymbol(tc
, "task_struct_size");
64 task_off
= readSymbol(tc
, "thread_info_task");
65 pid_off
= readSymbol(tc
, "task_struct_pid");
66 name_off
= readSymbol(tc
, "task_struct_comm");
70 ProcessInfo::task(Addr ksp
) const
72 Addr base
= ksp
& ~0x3fff;
73 if (base
== ULL(0xfffffc0000000000))
78 PortProxy
&vp
= tc
->getVirtProxy();
79 tsk
= vp
.read
<Addr
>(base
+ task_off
, GuestByteOrder
);
85 ProcessInfo::pid(Addr ksp
) const
87 Addr task
= this->task(ksp
);
93 PortProxy
&vp
= tc
->getVirtProxy();
94 pd
= vp
.read
<uint16_t>(task
+ pid_off
, GuestByteOrder
);
100 ProcessInfo::name(Addr ksp
) const
102 Addr task
= this->task(ksp
);
107 tc
->getVirtProxy().readString(comm
, task
+ name_off
, sizeof(comm
));
114 StackTrace::StackTrace()
119 StackTrace::StackTrace(ThreadContext
*_tc
, const StaticInstPtr
&inst
)
125 StackTrace::~StackTrace()
130 StackTrace::trace(ThreadContext
*_tc
, bool is_call
)
135 StackTrace::isEntry(Addr addr
)
141 StackTrace::decodeStack(MachInst inst
, int &disp
)
148 StackTrace::decodeSave(MachInst inst
, int ®
, int &disp
)
156 * Decode the function prologue for the function we're in, and note
157 * which registers are stored where, and how large the stack frame is.
160 StackTrace::decodePrologue(Addr sp
, Addr callpc
, Addr func
,
166 for (Addr pc
= func
; pc
< callpc
; pc
+= sizeof(MachInst
)) {
167 MachInst inst
= tc
->getVirtProxy().read
<MachInst
>(pc
);
170 if (decodeStack(inst
, disp
)) {
172 // panic("decoding frame size again");
176 } else if (decodeSave(inst
, reg
, disp
)) {
177 if (!ra
&& reg
== ReturnAddressReg
) {
178 ra
= tc
->getVirtProxy().read
<Addr
>(sp
+ disp
);
180 // panic("no return address value pc=%#x\n", pc);
194 StringWrap
name(tc
->getCpuPtr()->name());
195 SymbolTable
*symtab
= tc
->getSystemPtr()->kernelSymtab
;
197 DPRINTFN("------ Stack ------\n");
200 for (int i
= 0, size
= stack
.size(); i
< size
; ++i
) {
201 Addr addr
= stack
[size
- i
- 1];
204 else if (addr
== console
)
206 else if (addr
== unknown
)
209 symtab
->findSymbol(addr
, symbol
);
211 DPRINTFN("%#x: %s\n", addr
, symbol
);