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Commit 61b1a1ae authored by Douglas Leung's avatar Douglas Leung Committed by Dejan Jovicevic
Browse files

Add libunwindstack support for Mips and Mips64 



This patch requires v3.18 kernel or above, because v3.10 kernel
has a bug (as of 8/1/2017) in the ptrace(GETREGSET) function for mips
and mips64.

Change-Id: I004c1fa190193eebe1c84440b366289122a6bd8a
Signed-off-by: default avatarDouglas Leung <douglas.leung@mips.com>
Signed-off-by: default avatarDejan Jovicevic <dejan.jovicevic@mips.com>
parent 84de4c0a

libunwindstack/Android.bp

+8 −0
Original line number Diff line number Diff line
@@ -64,6 +64,8 @@ cc_library { 
        "RegsArm64.cpp",

        "RegsX86.cpp",

        "RegsX86_64.cpp",

        "RegsMips.cpp",

        "RegsMips64.cpp",

        "Unwinder.cpp",

        "Symbols.cpp",

    ],
@@ -86,6 +88,12 @@ cc_library { 
        x86_64: {

            srcs: ["AsmGetRegsX86_64.S"],

        },

        mips: {

            srcs: ["AsmGetRegsMips.S"],

        },

        mips64: {

            srcs: ["AsmGetRegsMips64.S"],

        },

    },



    shared_libs: [

libunwindstack/AsmGetRegsMips.S

0 → 100644
+80 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2017 The Android Open Source Project

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *  * Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 *  * Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in

 *    the documentation and/or other materials provided with the

 *    distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,

 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS

 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT

 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 */



  .text

  .type     AsmGetRegs, %function

  .globl    AsmGetRegs

  .ent      AsmGetRegs

  .balign   16

AsmGetRegs:

  .cfi_startproc

  .cfi_def_cfa $sp, 0

  .set push

  .set noreorder

  .cpload $t9

  sw   $zero, 0($a0)

  .set noat

  sw   $at, 4($a0)

  .set at

  sw   $v0, 8($a0)

  sw   $v1, 12($a0)

  sw   $a0, 16($a0)

  sw   $a1, 20($a0)

  sw   $a2, 24($a0)

  sw   $a3, 28($a0)

  sw   $t0, 32($a0)

  sw   $t1, 36($a0)

  sw   $t2, 40($a0)

  sw   $t3, 44($a0)

  sw   $t4, 48($a0)

  sw   $t5, 52($a0)

  sw   $t6, 56($a0)

  sw   $t7, 60($a0)

  sw   $s0, 64($a0)

  sw   $s1, 68($a0)

  sw   $s2, 72($a0)

  sw   $s3, 76($a0)

  sw   $s4, 80($a0)

  sw   $s5, 84($a0)

  sw   $s6, 88($a0)

  sw   $s7, 92($a0)

  sw   $t8, 96($a0)

  sw   $t9, 100($a0)

  sw   $k0, 104($a0)

  sw   $k1, 108($a0)

  sw   $gp, 112($a0)

  sw   $sp, 116($a0)

  sw   $s8, 120($a0)

  sw   $ra, 124($a0)

  jalr $zero, $ra

  sw   $ra, 128($a0)   // set PC to the calling function



  .set pop

  .cfi_endproc

  .size     AsmGetRegs, .-AsmGetRegs

  .end      AsmGetRegs

libunwindstack/AsmGetRegsMips64.S

0 → 100644
+80 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2017 The Android Open Source Project

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *  * Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 *  * Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in

 *    the documentation and/or other materials provided with the

 *    distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,

 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS

 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT

 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 */



  .text

  .type     AsmGetRegs, %function

  .globl    AsmGetRegs

  .ent      AsmGetRegs

  .balign    16

AsmGetRegs:

  .cfi_startproc

  .cfi_def_cfa $sp, 0

  .set push

  .set noreorder

  .cpload $t9

  sd   $zero, 0($a0)

  .set noat

  sd   $at, 8($a0)

  .set at

  sd   $v0, 16($a0)

  sd   $v1, 24($a0)

  sd   $a0, 32($a0)

  sd   $a1, 40($a0)

  sd   $a2, 48($a0)

  sd   $a3, 56($a0)

  sd   $a4, 64($a0)

  sd   $a5, 72($a0)

  sd   $a6, 80($a0)

  sd   $a7, 88($a0)

  sd   $t0, 96($a0)

  sd   $t1, 104($a0)

  sd   $t2, 112($a0)

  sd   $t3, 120($a0)

  sd   $s0, 128($a0)

  sd   $s1, 136($a0)

  sd   $s2, 144($a0)

  sd   $s3, 152($a0)

  sd   $s4, 160($a0)

  sd   $s5, 168($a0)

  sd   $s6, 176($a0)

  sd   $s7, 184($a0)

  sd   $t8, 192($a0)

  sd   $t9, 200($a0)

  sd   $k0, 208($a0)

  sd   $k1, 216($a0)

  sd   $gp, 224($a0)

  sd   $sp, 232($a0)

  sd   $s8, 240($a0)

  sd   $ra, 248($a0)

  jalr $zero, $ra

  sd   $ra, 256($a0)   // set PC to the calling function



  .set pop

  .cfi_endproc

  .size AsmGetRegs, .-AsmGetRegs

  .end      AsmGetRegs

libunwindstack/Elf.cpp

+8 −2
Original line number Diff line number Diff line
@@ -189,9 +189,12 @@ ElfInterface* Elf::CreateInterfaceFromMemory(Memory* memory) { 
    } else if (e_machine == EM_386) {

      arch_ = ARCH_X86;

      interface.reset(new ElfInterface32(memory));

    } else if (e_machine == EM_MIPS) {

      arch_ = ARCH_MIPS;

      interface.reset(new ElfInterface32(memory));

    } else {

      // Unsupported.

      ALOGI("32 bit elf that is neither arm nor x86: e_machine = %d\n", e_machine);

      ALOGI("32 bit elf that is neither arm nor x86 nor mips: e_machine = %d\n", e_machine);

      return nullptr;

    }

  } else if (class_type_ == ELFCLASS64) {
@@ -205,9 +208,12 @@ ElfInterface* Elf::CreateInterfaceFromMemory(Memory* memory) { 
      arch_ = ARCH_ARM64;

    } else if (e_machine == EM_X86_64) {

      arch_ = ARCH_X86_64;

    } else if (e_machine == EM_MIPS) {

      arch_ = ARCH_MIPS64;

    } else {

      // Unsupported.

      ALOGI("64 bit elf that is neither aarch64 nor x86_64: e_machine = %d\n", e_machine);

      ALOGI("64 bit elf that is neither aarch64 nor x86_64 nor mips64: e_machine = %d\n",

            e_machine);

      return nullptr;

    }

    interface.reset(new ElfInterface64(memory));

libunwindstack/MachineMips.h

0 → 100644
+66 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2017 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.

 */



#ifndef _LIBUNWINDSTACK_MACHINE_MIPS_H

#define _LIBUNWINDSTACK_MACHINE_MIPS_H



#include <stdint.h>



namespace unwindstack {



enum MipsReg : uint16_t {

  MIPS_REG_R0 = 0,

  MIPS_REG_R1,

  MIPS_REG_R2,

  MIPS_REG_R3,

  MIPS_REG_R4,

  MIPS_REG_R5,

  MIPS_REG_R6,

  MIPS_REG_R7,

  MIPS_REG_R8,

  MIPS_REG_R9,

  MIPS_REG_R10,

  MIPS_REG_R11,

  MIPS_REG_R12,

  MIPS_REG_R13,

  MIPS_REG_R14,

  MIPS_REG_R15,

  MIPS_REG_R16,

  MIPS_REG_R17,

  MIPS_REG_R18,

  MIPS_REG_R19,

  MIPS_REG_R20,

  MIPS_REG_R21,

  MIPS_REG_R22,

  MIPS_REG_R23,

  MIPS_REG_R24,

  MIPS_REG_R25,

  MIPS_REG_R26,

  MIPS_REG_R27,

  MIPS_REG_R28,

  MIPS_REG_R29,

  MIPS_REG_R30,

  MIPS_REG_R31,

  MIPS_REG_PC,

  MIPS_REG_LAST,



  MIPS_REG_SP = MIPS_REG_R29,

  MIPS_REG_RA = MIPS_REG_R31,

};



}  // namespace unwindstack



#endif  // _LIBUNWINDSTACK_MACHINE_MIPS_H
 
 No newline at end of file