99d4a697c7
The uapi headers have everything we need, and the corkscrew header files have been removed. Change-Id: I274b44463638112f1ab290926094c094c9253586
105 lines
3.6 KiB
C++
105 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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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/ptrace.h>
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#include <sys/user.h>
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#include "../utility.h"
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#include "../machine.h"
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// enable to dump memory pointed to by every register
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#define DUMP_MEMORY_FOR_ALL_REGISTERS 1
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#define R(x) (static_cast<unsigned int>(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, pid_t tid, int scope_flags) {
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pt_regs r;
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if (ptrace(PTRACE_GETREGS, tid, 0, &r)) {
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return;
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}
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if (IS_AT_FAULT(scope_flags) && DUMP_MEMORY_FOR_ALL_REGISTERS) {
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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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uintptr_t addr = R(r.regs[reg]);
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// Don't bother if it looks like a small int or ~= null, or if
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// it's in the kernel area.
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if (addr < 4096 || addr >= 0x80000000) {
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continue;
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}
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_LOG(log, scope_flags | SCOPE_SENSITIVE, "\nmemory near %.2s:\n", ®_NAMES[reg * 2]);
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dump_memory(log, tid, addr, scope_flags | SCOPE_SENSITIVE);
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}
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}
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unsigned int pc = R(r.cp0_epc);
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unsigned int ra = R(r.regs[31]);
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_LOG(log, scope_flags, "\ncode around pc:\n");
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dump_memory(log, tid, (uintptr_t)pc, scope_flags);
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if (pc != ra) {
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_LOG(log, scope_flags, "\ncode around ra:\n");
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dump_memory(log, tid, (uintptr_t)ra, scope_flags);
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}
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}
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void dump_registers(log_t* log, pid_t tid, int scope_flags) {
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pt_regs r;
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if(ptrace(PTRACE_GETREGS, tid, 0, &r)) {
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_LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
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return;
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}
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_LOG(log, scope_flags, " zr %08x at %08x v0 %08x v1 %08x\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, scope_flags, " a0 %08x a1 %08x a2 %08x a3 %08x\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, scope_flags, " t0 %08x t1 %08x t2 %08x t3 %08x\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, scope_flags, " t4 %08x t5 %08x t6 %08x t7 %08x\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, scope_flags, " s0 %08x s1 %08x s2 %08x s3 %08x\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, scope_flags, " s4 %08x s5 %08x s6 %08x s7 %08x\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, scope_flags, " t8 %08x t9 %08x k0 %08x k1 %08x\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, scope_flags, " gp %08x sp %08x s8 %08x ra %08x\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, scope_flags, " hi %08x lo %08x bva %08x epc %08x\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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