1// Copyright (c) 2014, Google Inc.
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met:
7//
8// * Redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer.
10// * Redistributions in binary form must reproduce the above
11// copyright notice, this list of conditions and the following disclaimer
12// in the documentation and/or other materials provided with the
13// distribution.
14// * Neither the name of Google Inc. nor the names of its
15// contributors may be used to endorse or promote products derived from
16// this software without specific prior written permission.
17//
18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30#ifndef CLIENT_LINUX_DUMP_WRITER_COMMON_THREAD_INFO_H_
31#define CLIENT_LINUX_DUMP_WRITER_COMMON_THREAD_INFO_H_
32
33#include <sys/ucontext.h>
34#include <sys/user.h>
35
36#include "client/linux/dump_writer_common/raw_context_cpu.h"
37#include "common/memory_allocator.h"
38#include "google_breakpad/common/minidump_format.h"
39
40namespace google_breakpad {
41
42#if defined(__i386) || defined(__x86_64)
43typedef __typeof__(((struct user*) 0)->u_debugreg[0]) debugreg_t;
44#endif
45
46// We produce one of these structures for each thread in the crashed process.
47struct ThreadInfo {
48 pid_t tgid; // thread group id
49 pid_t ppid; // parent process
50
51 uintptr_t stack_pointer; // thread stack pointer
52
53
54#if defined(__i386) || defined(__x86_64)
55 user_regs_struct regs;
56 user_fpregs_struct fpregs;
57 static const unsigned kNumDebugRegisters = 8;
58 debugreg_t dregs[8];
59#if defined(__i386)
60 user_fpxregs_struct fpxregs;
61#endif // defined(__i386)
62
63#elif defined(__ARM_EABI__)
64 // Mimicking how strace does this(see syscall.c, search for GETREGS)
65 struct user_regs regs;
66 struct user_fpregs fpregs;
67#elif defined(__aarch64__)
68 // Use the structures defined in <sys/user.h>
69 struct user_regs_struct regs;
70 struct user_fpsimd_struct fpregs;
71#elif defined(__mips__)
72 // Use the structure defined in <sys/ucontext.h>.
73 mcontext_t mcontext;
74#endif
75
76 // Returns the instruction pointer (platform-dependent impl.).
77 uintptr_t GetInstructionPointer() const;
78
79 // Fills a RawContextCPU using the context in the ThreadInfo object.
80 void FillCPUContext(RawContextCPU* out) const;
81
82 // Returns the pointer and size of general purpose register area.
83 void GetGeneralPurposeRegisters(void** gp_regs, size_t* size);
84
85 // Returns the pointer and size of float point register area.
86 void GetFloatingPointRegisters(void** fp_regs, size_t* size);
87};
88
89} // namespace google_breakpad
90
91#endif // CLIENT_LINUX_DUMP_WRITER_COMMON_THREAD_INFO_H_
92