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