blob: ac833aef2c6bebd2f54112be810d4ee95980b9e1 [file] [log] [blame]
/*
*
* Copyright 2006, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "DEBUG"
#include <errno.h>
#include <stdint.h>
#include <string.h>
#include <sys/ptrace.h>
#include <backtrace/Backtrace.h>
#include <log/log.h>
#include "machine.h"
#include "utility.h"
void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
pt_regs regs;
if (ptrace(PTRACE_GETREGS, backtrace->Tid(), 0, &regs)) {
ALOGE("cannot get registers: %s\n", strerror(errno));
return;
}
static const char reg_names[] = "r0r1r2r3r4r5r6r7r8r9slfpipsp";
for (int reg = 0; reg < 14; reg++) {
dump_memory(log, backtrace, regs.uregs[reg], "memory near %.2s:", &reg_names[reg * 2]);
}
dump_memory(log, backtrace, static_cast<uintptr_t>(regs.ARM_pc), "code around pc:");
if (regs.ARM_pc != regs.ARM_lr) {
dump_memory(log, backtrace, static_cast<uintptr_t>(regs.ARM_lr), "code around lr:");
}
}
#define DUMP_GP_REGISTERS(log, reg_prefix) \
_LOG(log, logtype::REGISTERS, " r0 %08x r1 %08x r2 %08x r3 %08x\n", \
static_cast<uint32_t>(reg_prefix##r0), static_cast<uint32_t>(reg_prefix##r1), \
static_cast<uint32_t>(reg_prefix##r2), static_cast<uint32_t>(reg_prefix##r3)); \
_LOG(log, logtype::REGISTERS, " r4 %08x r5 %08x r6 %08x r7 %08x\n", \
static_cast<uint32_t>(reg_prefix##r4), static_cast<uint32_t>(reg_prefix##r5), \
static_cast<uint32_t>(reg_prefix##r6), static_cast<uint32_t>(reg_prefix##r7)); \
_LOG(log, logtype::REGISTERS, " r8 %08x r9 %08x sl %08x fp %08x\n", \
static_cast<uint32_t>(reg_prefix##r8), static_cast<uint32_t>(reg_prefix##r9), \
static_cast<uint32_t>(reg_prefix##r10), static_cast<uint32_t>(reg_prefix##fp)); \
_LOG(log, logtype::REGISTERS, " ip %08x sp %08x lr %08x pc %08x cpsr %08x\n", \
static_cast<uint32_t>(reg_prefix##ip), static_cast<uint32_t>(reg_prefix##sp), \
static_cast<uint32_t>(reg_prefix##lr), static_cast<uint32_t>(reg_prefix##pc), \
static_cast<uint32_t>(reg_prefix##cpsr))
void dump_registers(log_t* log, pid_t tid) {
pt_regs r;
if (ptrace(PTRACE_GETREGS, tid, 0, &r)) {
ALOGE("cannot get registers: %s\n", strerror(errno));
return;
}
DUMP_GP_REGISTERS(log, r.ARM_);
user_vfp vfp_regs;
if (ptrace(PTRACE_GETVFPREGS, tid, 0, &vfp_regs)) {
ALOGE("cannot get FP registers: %s\n", strerror(errno));
return;
}
for (size_t i = 0; i < 32; i += 2) {
_LOG(log, logtype::FP_REGISTERS, " d%-2d %016llx d%-2d %016llx\n",
i, vfp_regs.fpregs[i], i+1, vfp_regs.fpregs[i+1]);
}
_LOG(log, logtype::FP_REGISTERS, " scr %08lx\n", vfp_regs.fpscr);
}
void dump_registers(log_t* log, const ucontext_t* uc) {
DUMP_GP_REGISTERS(log, uc->uc_mcontext.arm_);
}