b36b592338
The debuggerd code sometimes calls _LOG(..., logtype::ERROR, ...) and sometimes ALOGE(). Standardize on ALOGE since the _LOG message will wind up in the tombstone in weird places, but using ALOGE will wind up in the logcat portion of the tombstone. Bug: 21467089 Change-Id: Ie893f5e91d45b48ef3f5864c3a714e60ac848fb3
98 lines
3.6 KiB
C++
98 lines
3.6 KiB
C++
/*
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* Copyright 2012, 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 <errno.h>
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#include <inttypes.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 <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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#define R(x) (static_cast<uintptr_t>(x))
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// If configured to do so, dump memory around *all* registers
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// for the crashing thread.
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void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
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pt_regs r;
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if (ptrace(PTRACE_GETREGS, backtrace->Tid(), 0, &r)) {
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ALOGE("cannot get registers: %s\n", strerror(errno));
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return;
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}
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static const char reg_names[] = "$0atv0v1a0a1a2a3t0t1t2t3t4t5t6t7s0s1s2s3s4s5s6s7t8t9k0k1gpsps8ra";
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for (int reg = 0; reg < 32; reg++) {
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// skip uninteresting registers
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if (reg == 0 // $0
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|| reg == 26 // $k0
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|| reg == 27 // $k1
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|| reg == 31 // $ra (done below)
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)
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continue;
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dump_memory(log, backtrace, R(r.regs[reg]), "memory near %.2s:", ®_names[reg * 2]);
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}
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uintptr_t pc = R(r.cp0_epc);
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uintptr_t ra = R(r.regs[31]);
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dump_memory(log, backtrace, pc, "code around pc:");
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if (pc != ra) {
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dump_memory(log, backtrace, ra, "code around ra:");
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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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pt_regs r;
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if(ptrace(PTRACE_GETREGS, tid, 0, &r)) {
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ALOGE("cannot get registers: %s\n", strerror(errno));
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return;
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}
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_LOG(log, logtype::REGISTERS, " zr %08" PRIxPTR " at %08" PRIxPTR
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" v0 %08" PRIxPTR " v1 %08" PRIxPTR "\n",
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R(r.regs[0]), R(r.regs[1]), R(r.regs[2]), R(r.regs[3]));
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_LOG(log, logtype::REGISTERS, " a0 %08" PRIxPTR " a1 %08" PRIxPTR
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" a2 %08" PRIxPTR " a3 %08" PRIxPTR "\n",
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R(r.regs[4]), R(r.regs[5]), R(r.regs[6]), R(r.regs[7]));
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_LOG(log, logtype::REGISTERS, " t0 %08" PRIxPTR " t1 %08" PRIxPTR
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" t2 %08" PRIxPTR " t3 %08" PRIxPTR "\n",
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R(r.regs[8]), R(r.regs[9]), R(r.regs[10]), R(r.regs[11]));
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_LOG(log, logtype::REGISTERS, " t4 %08" PRIxPTR " t5 %08" PRIxPTR
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" t6 %08" PRIxPTR " t7 %08" PRIxPTR "\n",
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R(r.regs[12]), R(r.regs[13]), R(r.regs[14]), R(r.regs[15]));
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_LOG(log, logtype::REGISTERS, " s0 %08" PRIxPTR " s1 %08" PRIxPTR
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" s2 %08" PRIxPTR " s3 %08" PRIxPTR "\n",
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R(r.regs[16]), R(r.regs[17]), R(r.regs[18]), R(r.regs[19]));
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_LOG(log, logtype::REGISTERS, " s4 %08" PRIxPTR " s5 %08" PRIxPTR
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" s6 %08" PRIxPTR " s7 %08" PRIxPTR "\n",
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R(r.regs[20]), R(r.regs[21]), R(r.regs[22]), R(r.regs[23]));
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_LOG(log, logtype::REGISTERS, " t8 %08" PRIxPTR " t9 %08" PRIxPTR
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" k0 %08" PRIxPTR " k1 %08" PRIxPTR "\n",
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R(r.regs[24]), R(r.regs[25]), R(r.regs[26]), R(r.regs[27]));
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_LOG(log, logtype::REGISTERS, " gp %08" PRIxPTR " sp %08" PRIxPTR
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" s8 %08" PRIxPTR " ra %08" PRIxPTR "\n",
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R(r.regs[28]), R(r.regs[29]), R(r.regs[30]), R(r.regs[31]));
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_LOG(log, logtype::REGISTERS, " hi %08" PRIxPTR " lo %08" PRIxPTR
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" bva %08" PRIxPTR " epc %08" PRIxPTR "\n",
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R(r.hi), R(r.lo), R(r.cp0_badvaddr), R(r.cp0_epc));
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}
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