Merge "Add backtrace support for mips64."

LOCAL_SRC_FILES_arm    := arm/machine.cpp

LOCAL_SRC_FILES_arm64  := arm64/machine.cpp

LOCAL_SRC_FILES_mips   := mips/machine.cpp

LOCAL_SRC_FILES_mips64 := mips/machine.cpp

LOCAL_SRC_FILES_mips64 := mips64/machine.cpp

LOCAL_SRC_FILES_x86    := x86/machine.cpp

LOCAL_SRC_FILES_x86_64 := x86_64/machine.cpp

LOCAL_SRC_FILES_arm    := arm/crashglue.S

LOCAL_SRC_FILES_arm64  := arm64/crashglue.S

LOCAL_SRC_FILES_mips   := mips/crashglue.S

LOCAL_SRC_FILES_mips64 := mips/crashglue.S

LOCAL_SRC_FILES_mips64 := mips64/crashglue.S

LOCAL_SRC_FILES_x86    := x86/crashglue.S

LOCAL_SRC_FILES_x86_64 := x86_64/crashglue.S

LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLES)

	.set	noat

	.globl crash1

	.globl crashnostack

crash1:

	li	$0,0xdead0000+0

	li	$1,0xdead0000+1

	li	$2,0xdead0000+2

	li	$3,0xdead0000+3

	li	$4,0xdead0000+4

	li	$5,0xdead0000+5

	li	$6,0xdead0000+6

	li	$7,0xdead0000+7

	li	$8,0xdead0000+8

	li	$9,0xdead0000+9

	li	$10,0xdead0000+10

	li	$11,0xdead0000+11

	li	$12,0xdead0000+12

	li	$13,0xdead0000+13

	li	$14,0xdead0000+14

	li	$15,0xdead0000+15

	li	$16,0xdead0000+16

	li	$17,0xdead0000+17

	li	$18,0xdead0000+18

	li	$19,0xdead0000+19

	li	$20,0xdead0000+20

	li	$21,0xdead0000+21

	li	$22,0xdead0000+22

	li	$23,0xdead0000+23

	li	$24,0xdead0000+24

	li	$25,0xdead0000+25

	li	$26,0xdead0000+26

	li	$27,0xdead0000+27

	li	$28,0xdead0000+28

	# don't trash the stack otherwise the signal handler won't run

	#li	$29,0xdead0000+29

	li	$30,0xdead0000+30

	li	$31,0xdead0000+31

	lw	$zero,($0)

	b .

crashnostack:

	li	$sp, 0

	lw	$zero,($0)

	b .

/*

 * Copyright 2014, 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.

 */

#include <stddef.h>

#include <stdlib.h>

#include <string.h>

#include <stdio.h>

#include <errno.h>

#include <sys/types.h>

#include <sys/ptrace.h>

#include <sys/user.h>

#include "../utility.h"

#include "../machine.h"

#define R(x) (static_cast<unsigned long>(x))

// If configured to do so, dump memory around *all* registers

// for the crashing thread.

void dump_memory_and_code(log_t* log, pid_t tid) {

  pt_regs r;

  if (ptrace(PTRACE_GETREGS, tid, 0, &r)) {

    return;

  }

  static const char REG_NAMES[] = "$0atv0v1a0a1a2a3a4a5a6a7t0t1t2t3s0s1s2s3s4s5s6s7t8t9k0k1gpsps8ra";

  for (int reg = 0; reg < 32; reg++) {

    // skip uninteresting registers

    if (reg == 0 // $0

        || reg == 26 // $k0

        || reg == 27 // $k1

        || reg == 31 // $ra (done below)

       )

      continue;

    uintptr_t addr = R(r.regs[reg]);

    // Don't bother if it looks like a small int or ~= null, or if

    // it's in the kernel area.

    if (addr < 4096 || addr >= 0x4000000000000000) {

      continue;

    }

    _LOG(log, logtype::MEMORY, "\nmemory near %.2s:\n", &REG_NAMES[reg * 2]);

    dump_memory(log, tid, addr);

  }

  unsigned long pc = R(r.cp0_epc);

  unsigned long ra = R(r.regs[31]);

  _LOG(log, logtype::MEMORY, "\ncode around pc:\n");

  dump_memory(log, tid, (uintptr_t)pc);

  if (pc != ra) {

    _LOG(log, logtype::MEMORY, "\ncode around ra:\n");

    dump_memory(log, tid, (uintptr_t)ra);

  }

}

void dump_registers(log_t* log, pid_t tid) {

  pt_regs r;

  if(ptrace(PTRACE_GETREGS, tid, 0, &r)) {

    _LOG(log, logtype::ERROR, "cannot get registers: %s\n", strerror(errno));

    return;

  }

  _LOG(log, logtype::REGISTERS, " zr %016lx  at %016lx  v0 %016lx  v1 %016lx\n",

       R(r.regs[0]), R(r.regs[1]), R(r.regs[2]), R(r.regs[3]));

  _LOG(log, logtype::REGISTERS, " a0 %016lx  a1 %016lx  a2 %016lx  a3 %016lx\n",

       R(r.regs[4]), R(r.regs[5]), R(r.regs[6]), R(r.regs[7]));

  _LOG(log, logtype::REGISTERS, " a4 %016lx  a5 %016lx  a6 %016lx  a7 %016lx\n",

       R(r.regs[8]), R(r.regs[9]), R(r.regs[10]), R(r.regs[11]));

  _LOG(log, logtype::REGISTERS, " t0 %016lx  t1 %016lx  t2 %016lx  t3 %016lx\n",

       R(r.regs[12]), R(r.regs[13]), R(r.regs[14]), R(r.regs[15]));

  _LOG(log, logtype::REGISTERS, " s0 %016lx  s1 %016lx  s2 %016lx  s3 %016lx\n",

       R(r.regs[16]), R(r.regs[17]), R(r.regs[18]), R(r.regs[19]));

  _LOG(log, logtype::REGISTERS, " s4 %016lx  s5 %016lx  s6 %016lx  s7 %016lx\n",

       R(r.regs[20]), R(r.regs[21]), R(r.regs[22]), R(r.regs[23]));

  _LOG(log, logtype::REGISTERS, " t8 %016lx  t9 %016lx  k0 %016lx  k1 %016lx\n",

       R(r.regs[24]), R(r.regs[25]), R(r.regs[26]), R(r.regs[27]));

  _LOG(log, logtype::REGISTERS, " gp %016lx  sp %016lx  s8 %016lx  ra %016lx\n",

       R(r.regs[28]), R(r.regs[29]), R(r.regs[30]), R(r.regs[31]));

  _LOG(log, logtype::REGISTERS, " hi %016lx  lo %016lx bva %016lx epc %016lx\n",

       R(r.hi), R(r.lo), R(r.cp0_badvaddr), R(r.cp0_epc));

}

#define ABI_STRING "arm"

#elif defined(__aarch64__)

#define ABI_STRING "arm64"

#elif defined(__mips__)

#elif defined(__mips__) && !defined(__LP64__)

#define ABI_STRING "mips"

#elif defined(__mips__) && defined(__LP64__)

#define ABI_STRING "mips64"

#elif defined(__i386__)

#define ABI_STRING "x86"

#elif defined(__x86_64__)