102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
/*
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*
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* Copyright 2014, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "DEBUG"
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#include <elf.h>
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#include <errno.h>
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#include <stdint.h>
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#include <string.h>
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#include <sys/ptrace.h>
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#include <sys/uio.h>
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#include <backtrace/Backtrace.h>
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#include <log/log.h>
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#include "machine.h"
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#include "utility.h"
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void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
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struct user_pt_regs regs;
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struct iovec io;
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io.iov_base = ®s;
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io.iov_len = sizeof(regs);
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if (ptrace(PTRACE_GETREGSET, backtrace->Tid(), reinterpret_cast<void*>(NT_PRSTATUS), &io) == -1) {
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ALOGE("ptrace failed to get registers: %s", strerror(errno));
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return;
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}
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for (int reg = 0; reg < 31; reg++) {
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dump_memory(log, backtrace, regs.regs[reg], "memory near x%d:", reg);
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}
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dump_memory(log, backtrace, static_cast<uintptr_t>(regs.pc), "code around pc:");
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if (regs.pc != regs.sp) {
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dump_memory(log, backtrace, static_cast<uintptr_t>(regs.sp), "code around sp:");
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}
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}
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void dump_registers(log_t* log, pid_t tid) {
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struct user_pt_regs r;
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struct iovec io;
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io.iov_base = &r;
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io.iov_len = sizeof(r);
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if (ptrace(PTRACE_GETREGSET, tid, (void*) NT_PRSTATUS, (void*) &io) == -1) {
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ALOGE("ptrace error: %s\n", strerror(errno));
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return;
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}
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for (int i = 0; i < 28; i += 4) {
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_LOG(log, logtype::REGISTERS,
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" x%-2d %016llx x%-2d %016llx x%-2d %016llx x%-2d %016llx\n",
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i, r.regs[i],
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i+1, r.regs[i+1],
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i+2, r.regs[i+2],
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i+3, r.regs[i+3]);
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}
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_LOG(log, logtype::REGISTERS, " x28 %016llx x29 %016llx x30 %016llx\n",
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r.regs[28], r.regs[29], r.regs[30]);
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_LOG(log, logtype::REGISTERS, " sp %016llx pc %016llx pstate %016llx\n",
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r.sp, r.pc, r.pstate);
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struct user_fpsimd_state f;
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io.iov_base = &f;
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io.iov_len = sizeof(f);
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if (ptrace(PTRACE_GETREGSET, tid, (void*) NT_PRFPREG, (void*) &io) == -1) {
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ALOGE("ptrace error: %s\n", strerror(errno));
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return;
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}
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for (int i = 0; i < 32; i += 2) {
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_LOG(log, logtype::FP_REGISTERS,
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" v%-2d %016" PRIx64 "%016" PRIx64 " v%-2d %016" PRIx64 "%016" PRIx64 "\n",
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i,
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static_cast<uint64_t>(f.vregs[i] >> 64),
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static_cast<uint64_t>(f.vregs[i]),
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i+1,
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static_cast<uint64_t>(f.vregs[i+1] >> 64),
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static_cast<uint64_t>(f.vregs[i+1]));
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}
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_LOG(log, logtype::FP_REGISTERS, " fpsr %08x fpcr %08x\n", f.fpsr, f.fpcr);
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}
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