Quelle LulDwarf.cpp Sprache: C

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */// Redistribution and use in source and binary forms, with or without

// Copyright (c) 2010 Google Inc. 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.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// 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.

// CFI reader author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>

// Implementation of dwarf2reader::LineInfo, dwarf2reader::CompilationUnit,
// and dwarf2reader::CallFrameInfo. See dwarf2reader.h for details.

// This file is derived from the following files in
// toolkit/crashreporter/google-breakpad:
//   src/common/dwarf/bytereader.cc
//   src/common/dwarf/dwarf2reader.cc
//   src/common/dwarf_cfi_to_module.cc

#include <stdint.h>
#      (0,
      (0)
include.h>

#nclude<>
#include <string>

# mozilla
#include "mozilla/Attributes.h"
""
#include "

#include "LulCommonExt.h"
#include "LulDwarfInt.h"

// Set this to 1 for verbose logging
#define DEBUG_DWARF 0

namespace lul {

using#ncludestack
using /"

ByteReader::ByteReader(enum Endianness endian)
:(),
      (NULL
this- ByteReader;
()
nExt
      #nclude "
     ()
      #DEBUG_DWARF
      java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 30

  // size

void ByteReader::SetOffsetSize(uint8 initial_length)java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
  offset_size_java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
  MOZ_ASSERT(if=DW_EH_PE_omit)return ;
  if       have_data_base_
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  } else {
    java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
}

void ByteReader::SetAddressSize(   = ;
  address_size_
this- &:java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
  if (sizecase:
this-=&teReader;
} else
}
  }
java.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 1

uint64 ByteReader::ReadInitialLength(const char* start, size_tif (encoding  x7 DW_EH_PE_udata8) false
  // address section_base_, where section_base_ itself may or may not be// aligned.
  start += 4;

      uint64 skew  & (()  1;
  // size is 8 and we need to read the next 8 bytes for the real length.;
  if    /
SetOffsetSizejava.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
    * =12java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
    return ReadOffset(start      return true;
  }  {
    SetOffsetSizeconstchar*aligned_buffer buffer_base_ aligned skew);
    *len      :
  }
  return nitial_length
}

bool     :
         have_data_base_;
  if (encoding :
  ifreturn;
if( &00    false
  returnreturn;
}

bool    ByteReaderReadEncodedPointer ,
  switch & 0x70 {
    case DW_EH_PE_absptr:
      return true;
    case DW_EH_PE_pcrel:
      return have_section_base_;
    case DW_EH_PE_textrel
        switch( & x0f
    case DW_EH_PE_datarel:
      returnhave_data_base_
    caseMOZ_ASSERT ! );
return;
  / GNU       /the nybblemeans  is,not
       false
  }
}

uint64 ByteReader::eadEncodedPointer( char ,
java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
                                      size_t*  // machine-signed pointers.
  java.lang.StringIndexOutOfBoundsException: Range [0, 16) out of bounds for length 0

  MOZ_ASSERT(encoding !       =ReadAddress);

  /The   40does make ,but
  // GNU tools (gcc/unwind-pe.h; readelf/dwarf.c; gdb/dwarf2-frame.c)
  // agree that aligned pointers are always absolute, machine-sized,
  // machine-signed pointers.
  if (java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 0
    MOZ_ASSERT(b;

DW_EH_PE_udata2

        // First, find the offset to START from the closest prior aligned
    java.lang.StringIndexOutOfBoundsException: Range [0, 68) out of bounds for length 12
/ address,  section_base_  ornot
    / aligned.

    // First, find the offset to START from the closest prior aligned
case:
uint64=ReadEightBytes;
*  / Convert back to a pointer.
    java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

uint64offset(-) ()
    // Convert back to a pointer.
    char  java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 65
    // Finally, store the length and actually fetch the pointer.}
    len -buffer()
      // offset relative to some base.
}

    switch (encoding & 0x0f) {
  // offset relative to some base.
  uint64 offset =/java.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74
  switchencoding       ;

      / DW_EH_PE_absptr is weird, as it is used as a meaningful value for
      // both the high and low nybble of encoding bytes. When it appears in
/   nybble means the  // as here, it means that the pointer is stored as a normal
      // offset from some base address. When it appears in the low nybble,
      // as here, it means that the pointer is stored as a normal
      // machine-sized and machine-signed address. A low nybble of
      // DW_EH_PE_absptr does not imply that the pointer is absolute; it is
      java.lang.StringIndexOutOfBoundsException: Range [0, 34) out of bounds for length 3
      // if the upper nybble is not DW_EH_PE_absptr.
             = ReadUnsignedLEB128(, len
      *len
break

    case      offsetReadTwoBytesbuffer
      offset = ReadUnsignedLEB128
      java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

*n=;
      offset = ReadTwoBytes(buffer);
      *len=2
      break;

    case DW_EH_PE_udata4:
offsetReadFourBytes);
      *len = 4;
            *len = 8java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

    case        ;
        buffer
      *len _H_PE_datarel
      reak

    case DW_EH_PE_sleb128:offset
      offsetoffset( ^x8000x8000
      break2

    case DW_EH_PE_sdata2
offsetReadTwoBytes);
      // Sign-extend from 16 bits.
       =(  x8000x8000
      *len = 2;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

    case     ase:
  buffer
       = (buffer     = pointer ln java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
      offset
*en ;
      breakjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

    case DW_EH_PE_sdata8:
      // No need to sign-extend; this is the full width of our type.// type.  Excluding the INVALID variant, there is one subclass of this for
      offset = ReadEightBytes(buffer);
      *len// get horrendous.
      break;

fault:
       = 0
  }

  // Find the appropriate base address.
  uint64 base;
   ValOffset
      (ave_section_base_
      =java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 53

    caseDW_EH_PE_pcrel
      MOZ_ASSERT(have_section_base_
       :
ag_ indicates  of expression   areforms

    case DW_EH_PE_textrel:
      MOZ_ASSERT);
base =data_base_ / value at unwind time.  The description below assumes the presence of, at
      break;

    case DW_EH_PE_datarel:
();
      base =;
    ;

    case DW_EH_PE_funcrel:
      MOZ_ASSERT(       = function_base_;
      base
break

    default:
      abort();
  }

  uint64 pointer/The forms are using, and.The

  /java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
  if              value
        (java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 48
  else
    MOZ_ASSERT(AddressSizejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

  return pointer;
}

// A DWARF rule for recovering the address or value of a register, or
// computing the canonical frame address.  This is an 8-way sum-of-products
// type.  Excluding the INVALID variant, there is one subclass of this for
// each '*Rule' member function in CallFrameInfo::Handler.
//
// This could logically be nested within State, but then the qualified names
// get horrendous.

class CallFrameInfo::Rule final {
public
enum {
    ,
    Undefined,
    SameValue,
    Offset
    ValOffset,
    Register,
    Expression,
    ValExpression
  };

    ,java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
  // tag_ (below) indicates the form of the expression.  There are 7 forms
private:
  // value at unwind time.  The description below assumes the presence of, at
  / unwind time:
  //
  // * a function R, which takes a Dwarf register number and returns its value
  //   in the callee frame (the one we are unwinding out of).
  //
  // * a function EvalDwarfExpr, which evaluates a Dwarf expression.
  /
  // Register numbers are encoded using the target ABI's Dwarf
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
java.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77
  // ("the CFA").
  //
  // The expression forms are represented using tag_, word1_ and word2_.  The
  java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
  //
  java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
  //   valid fields:  (none)
  //   denotes:       no value
  //
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
  //   cannot be recovered.
  //   valid fields:  (none)
  //   denotes:       no value
  //
  // * SameValue: the register's value is the same as in the callee.
  //   valid fields:  (none)
  //   denotes:       R(the register that this Rule is associated with,
  //                    not stored here)
  //
  // * Offset: the register's value is in memory at word2_ bytes away from
  //   Dwarf register number word1_.  word2_ is interpreted as a *signed*
  //   offset.
  //   valid fields: word1_=DwarfReg, word2=Offset      TagINVALID
  //   denotes:      *(R(word1_) + word2_)
  //
  // * ValOffset: same as Offset, without the dereference.        return =java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
  //   valid fields: word1_=DwarfReg, word2=Offset
  //   denotes:      R(word1_) + word2_      case/java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65
  //
  // * Register:  the register's value is in some other register,
java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
  //   valid fields: word1_=DwarfReg
  //   denotes:      R(word1_)
  //
  / * Expression: the register's value is in memory at a location that can be
  //   computed from the Dwarf expression contained in the word2_ bytes
  /   starting at word1_.  Note these locations are into the area of the .so
//   temporarily mmaped info for debuginfo reading and have no validity once
  //   debuginfo reading has finished.
  //   valid fields: ExprStart=word1_, ExprLen=word2_  java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
   tagconst/ValExpressionsame ,without dereference
  //
  // * ValExpression: same as Expression, without the dereference.
xprStart ExprLenjava.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
  //   denotes:      EvalDwarfExpr(word1_, word2_)
  //

  // 3 words (or less) for representation.  Unused word1_/word2_ fields must
  // be set to zero.return (nt;
  Tagtag_        ()java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
  uintptr_t;
  uintptr_t;

  // To ensure that word1_ can hold a pointer to an expression string.
  static_assert(sizeof(const char
  // To ensure that word2_ can hold any string length or memory offset.
  static_assert

  // This class denotes an 8-way sum-of-product type, and accessing invalid
  // fields is meaningless.  The accessors and constructors below enforcejava.lang.StringIndexOutOfBoundsException: Range [10, 4) out of bounds for length 19
       TagreturnImageSlice *,()word2_
  bool ase::ameValue
         word1_MOZ_CRASH
      case Tag::INVALIDjava.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
      case Tag::Undefined:
      case Tag::SameValue:
        return word1_ == 0return ==0java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
      case r
      case Tag::         true
        return         ()java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
      rord2_;
        return word2_ == 0;
       Tag:Expressionjava.lang.StringIndexOutOfBoundsException: Range [27, 28) out of bounds for length 27
caseValExpression
        return true ;
      default
        (static (nt, offset
}
  }

public:
{ ;}
  int dwreg
     )
      case Tag::Offset:
      case Tag::ValOffset  );
      case Tag::Register
        return (int)   (int dwreg){
      default:
        java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
}
  }
  intptr_t      Tagjava.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
            .  :Expression
      caseT:Offset
      case Tag        (;
        return
      defaultefault
        (;
     }
  }
  ImageSlice r;
    .=Tag:;
      case Tagrword1_ uintptr_t.start_
      caseTagValExpression
        return ImageSlice(         ImageSliceconst*, ()word2_
      default:
        MOZ_CRASH();
    }
  }

  // Constructor-y stuff
  Rule()
    tag_ ::;
        (isVALID &.isVALID);
    word2_ = 0;
  }

  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
    Rule r;  // is initialised by Rule()
    return r;
  }
  static Rule
    Rule Rule mkUndefinedRule){
    r.tag_ = Tag::Undefined;
    r.ord1_;
    r    rtag_Tag;
    return. = 0
}
  static Rule() {

    rtag_::SameValue
     r;
    word2_;
   return java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
  }
         Tag::SameValue:
    Rule
    rtag_ Tagreturn ;
   rword1_(uintptr_t    ;
    r.word2_ = (uintptr_t)offset;
     r;
  }
           word1_= rhsword1_);
    Rule
    rtag_Tag:;
    r.word1_
r=uintptr_t
    return r
  }
(nt){
    Rule
        (;
    r.ord1_ =(intptr_t java.lang.StringIndexOutOfBoundsException: Range [5, 6) out of bounds for length 5
r.ord2_java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
    return r;
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  static Rule (ImageSlice)     ;
    Rule r;
    }
    r.word1_ = (uintptr_t
.  (expr
     ;
  }
    .=Tag;
    Rule r;
    r.tag_ = Tag::ValExpressionrord2_uintptr_t.;
    r.      Tag:
         r;
    return r;
  }

      r.tag_ = Tag::ValExpression;
  inlinecase:::

  bool operator=const & rhscase:ValOffset
    MOZ_ASSERT(isVALID() && rhs.isVALID());
    MOZ_ASSERT(isCanonical >RegisterRule
Tag:
     >ExpressionRule
      return false;address,(const*,size_t;
    }
    witch)java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
Tag:
        MOZ_CRASH();
      case Tag::Undefined:
       Tag:
                MOZ_CR)
      case}MOZ_ASSERT()
lOffset    reg
        return    MOZ_ASSERT(()java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
switch      case ::INVALID:
        return word1_ == rhs.word1_        /  dont actually SetBaseRegister ,they
      case Tag::Expression:
      case Tag::ValExpression:
        return expr() == rhs.expr();
      default:
        MOZ_CRASH();
    }
  }

//oesntmake  OffsetRulecomputing:

          // computes the address at which a register is saved, not a value.
  // recovered using this rule. If REG is kCFARegister, then this rule      case TagUndefined
  // describes how to compute the canonical frame address. Return what the
        case Tag::Expression:
  bool Handle(Handler* handler, uint64case::ValExpression
    MOZ_ASSERT(     case::ValExpression:
         () = rhse()java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
    switch (tag_
      case Tag:java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
return >UndefinedRule, );
      case Tag::SameValue:
        return
      case  void SetO(long offset
         >(addressr, , );
      case Tag::ValOffset:
        return handler->  bool Handle(Handler* handler, uint6int reg {
      case Tag::Register:
return>(,,)java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
se      caseTagjava.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
        return handler->ExpressionRule(
            address, reg        caseSameValue
      case TagcaseTag::
        return         // Do nothing
            address, reg,                 (;
      default:
(;
    }
  }

  void(unsigned) {
isVALID)java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
MOZ_ASSERT);
    switch (tag_) {
      case Tag::ValOffset:
      :::
        breaks= Undefined ,const* java.lang.StringIndexOutOfBoundsException: Range [66, 65) out of bounds for length 75
case:::
// We don't actually need SetBaseRegister or SetOffset here, since they
        /are  evercaseTag:java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
        // doesn't make sense to use OffsetRule for computing the CFA: it::
        // computes the address at which a register is saved, not a value. java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
        // (fallthrough)
       Tag ::
::
      ;
      Tag
        java.lang.StringIndexOutOfBoundsException: Range [81, 81) out of bounds for length 80
          othing
        break;
      default:
        MOZ_CRASH();
    }
  }

  void   void SetOffset
    MOZ_ASSERT
    MOZ_ASSERTisCanonical)
    switch (tag_) {
case::ValOffset
        word2_        Tagjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 21
        break;
      case Tag::Offset:
        // Same comment as in SetBaseRegister applies
        // (fallthrough)//
      java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
      case Tag::SameValue:
      case Tag::Register:
       Tag:
      case Tag::ValExpression:
        // Do nothing
        break;
      default:
     MOZ_CRASH(;
}
  }

  // For debugging only;
  string{
     buf0]
    string s = "";
(
      case ::
        s = "INVALIDscheme .
        break
      case void).)}

        break;
SameValue
        s = "SameValue ok=.(rhsentries_i];
        break;
      case Tag::Offset:
      java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        break;
      case Tag::ValOffset:
        sprintf nEntTag:
(long                (long long irstreg
(buf
;
::      java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
        s = "Register
        break;
      case Tagjava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
                e]  ;
        break;
c ::alExpression
        s = ValExpression;
        break;
      default::
;
    }
return
  }
};

// `RuleMapLowLevel` is a simple class that maps from `int` (register numbers)
// to `Rule`.  This is implemented as a vector of `<int, Rule>` pairs, with a
// 12-element inline capacity.  From a big-O perspective this is obviously a
// terrible way to implement an associative map.  This workload is however
// quite special in that the maximum number of elements is normally 7 (on
// x86_64-linux), and so this implementation is much faster than one based on
// std::map with its attendant R-B-tree node allocation and balancing
// overheads.
//
// An iterator that enumerates the mapping in increasing order of the `int`
// keys is provided.  This ordered iteration facility is required by
// CallFrameInfo::RuleMap::HandleTransitionTo, which needs to iterate through
// two such maps simultaneously and in-order so as to compare them.

// All `Rule`s in the map must satisfy `isVALID()`.  That conveniently means
// that `Rule::mkINVALID()` can be used to indicate "not found` in `get()`.


  using =<,Rule;

  // The inline capacity of 12 is carefully chosen.  It would be wise to make
  // careful measurements of time, instruction count, allocation count and
  // allocated bytes before changing it.  For x86_64-linux, a value of 8 is
   ::
  // around 20%.  For arm64-linux, a value of 24 is better; using 12 increases
  // the total blocks allocated by around 20%.  But it's a not bad tradeoff
   nextIx_:<, 2 ;
  // scheme of using `std::map`.
<1java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38

      MOZ_R rmll_-
  MOZ_RELEASE_ASSERT)

  RuleMapLowLevel() { clear();/ next entry.

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    entries_.clear();
    for (size_t i = 0;;
      bool ok
()
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
    return      +
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

  void set(intRuleMap & )  (Rule okentries_((, );
    MOZ_ASSERT(rule.isVALID());
where(ok
         else{
    size_t nEnt = entries_.length();
    while (i       MOZ_ASSERTi<nEnt theto.
      i++;
      if (ntries_[].){cfa_rule_rule}

      // No entry exists, and all the existing ones are for lower register
      // numbers.  So just add it at the end.
      bool ok =entries_append
      MOZ_RELEASE_ASSERT(ok);
    } {
      // It needs to live at location `i`, and ..
MOZ_ASSERT<nEnt
if[i. ==) java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37

        entries_[i].second = rule;
      } else {
// . 'snopreviousentry shift i all following
/java.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77
        // manually is measurably cheaper than using `Vector::insert`.
(entries_]first reg);
        bool ok = entries_.append      java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
        MOZ_RELEASE_ASSERT(ok);
       (j=nEnt 1j--{
          entries_[j] = entries_[j - 1];
        }
[i =Entry,);
      }
    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
    // Check in-order-ness and validity.
     ( i =0   entries_(; +){
      MOZ_ASSERT(entries_[i].second.isVALID    size_t nEnt = entries_.length();
MOZ_ASSERT_IFi>entries_[  ]first// "early exit" in the case where `entries_[i].first > reg` was tested on
    }
    ((reg()java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35
  }

  // Find the entry for `reg`, or return `Rule::mkINVALID()` if not found.
   ( )  {
    size_t nEnt}
    // "early exit" in the case where `entries_[i].first > reg` was tested on
    // x86_64 and found to be slightly slower than just testing all entries,
      // A very simple in-order iteration facility.
    // the cost of an extra test per iteration.
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
      MOZ_ASSERT !Handler);
   ntries_second
        MOZ_ASSERT(ret.isVALIDboolr.set )
        (  >.())
      *handleraddress &new_rules /java.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77

      (.(  ..sVALID
  }

/
  class Iter {
    const RuleMapLowLevel
/ A map from register numbers to rules.  This is a wrapper around

   public:/
    explicit Iter(const RuleMapLowLevel* rmll) :
    bool  (
( !(
    // Move the iterator to the next entry.
    void step() {
}lse
      nextIx_++;
    }
/java.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77

pair,Rule>peekjava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
        RuleMapLowLevel:Iter new_itnew_rules);
returnentries_nextIx_];
    }
  };
};

// A map from register numbers to rules.  This is a wrapper around
// `RuleMapLowLevel`, with added logic for dealing with the "special" CFA
// rule, and with `HandleTransitionTo`, which effectively computes the
// difference between two `RuleMaps`.

RuleMap
public:
  RuleMap/.
  RuleMap(const RuleMap& rhs) : cfa_rule_(Rule   java.lang.StringIndexOutOfBoundsException: Range [14, 8) out of bounds for length 21
  ~RuleMap) ();}

&=const)

    // Remove all register rules and clear cfa_rule_.
  void SetCFARule(Rule rule)

  // Return the current CFA rule.  Be careful not to modify it -- it's returned
/
  // We use these two for DW_CFA_def_cfa_offset and DW_CFA_def_cfa_register,.()java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20

  // established.
  Rule CFARule() const { return cfa_rule_    <, >  =.peek
  Rule* CFARuleRef() { return &java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 1

       (:java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
  Rule RegisterRule(int

/
  void SetRegisterRule(int java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

   CallFrameInfo::RuleMap::HandleTransitionTo(  :mkINVALIDjava.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
  // this RuleMap to NEW_RULES at ADDRESS. We use this to implement
  // DW_CFA_restore_state, where lots of rules can change simultaneously.
   trueall // instructions from  and.
  bool HandleTransitionTo(Handler* :
                          const RuleMap& new_rules) const;

private
  // Remove all register rules and clear cfa_rule_.
  void Clear

  address_/   hasa CFA rule new_rules'.
  ule;

  // A map from register numbers to postfix expressions to recover() }
  // their values.~State
  RuleMapLowLevel registers_;
};

CallFrameInfo0
     DW_CFA_restore instructions, and return true. On error, report
  ifjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  .;
  returnRuleMapLowLevel old_it)
}

:Rule:RuleMap(int) constjava.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73
  MOZ_ASSERT(reg != Handler old_pair < Operands
  return registers_()java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
}

void CallFrameInfo::RuleMap     ;
  MOZ_ASSERT(reg != Handler
  MOZ_ASSERT(rule.isVALID());
  registers_.set(reg, rule);
}

::Hjava.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
    Handler
  // Transition from cfa_rule_ to new_rules.cfa_rule_.
  if (cfa_rule_
    if (cfa_rule_ !=       (old_pair. !=new_pair &
                  If the has ' string ''uses the
      return false;
    }
  }else(.(){
      //   '4'  a four-byte offset              (OPERANDS->offset)
    // CallFrameInfo::Handler has no way to handle this --- and shouldn't;
!SameValueRuleold_pair) ;
    // detected this and warned, so take no action here.
  } else if (new_rules
    // This shouldn't be possible: NEW_RULES is some prior state, and
    // there's no way to remove entries.
    MOZ_ASSERT(0);
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
    // Both CFA rules are empty.  No action needed.
  }

  // Traverse the two maps in order by register number, and report/   in case `true.
  // whatever differences we find.
  RuleMapLowLevel// instructions from a CIE and FDE.
RuleMapLowLevel (booljava.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
  while (!old_it.finished()
    pair<int  (
    pair<int, Rule> new_pair = new_it reader_),
    ifold_pair < new_pair) {
        // return true. On failure, report and return false. (Used for
      //
(   )
      // only mentions callee-saves registers, and GCC's convention for
      // callee-saves registers is that they are unchanged, it's a goodState{
      // approximation.
        }
        return false;
      }
      old_it.step();
    }/ DW_CFA_restore, and true On//failureand false
      // NEW_RULES has an entry for new_pair.first, but this RuleMap
      // doesn't. This shouldn't be possible: NEW_RULES is some prior
      // state, and there's no way to remove entries. ( FDEfde
      MOZ_ASSERT(0);
    } else {
  {
      // rule if it is different. register_number; / A register number.
      if/
!..Handle,address,new_pair))
        return false;

      new_it.step
      old_it.step();
    }
  }
  // Finish off entries from this RuleMap with no counterparts in new_rules.
  while

    if   ///
    old_it.step();
  }
  // Since we only make transitions from a rule set to some previously>(entry_-,entry_-)java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
  // saved rule set, and we can only add rules to the map, NEW_RULES*;
  // must have fewer rules than *this.
  MOZ_ASSERT(new_it.finished());
  /   '1'  a one-byte offset               (OPERANDS->offset)
  return true;
}

// Remove all register rules and clear cfa_rule_.
voidCallFrameInfo:RuleMap::Clear{
  cfa_rule_  uint64 address_
  registers_.clear();
}

// The state of the call frame information interpreter as it processes
// instructions from a CIE and FDE.

public:
/  a framejava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
  // reporter, reader, handler, and initial call frame info address.
  State(ByteReader* reader, Handler* handler, Reporter*  /
        uint64 address  / Repeatedly call `DoInstruction`, until either:
      : reader_(reader),
        handler_(handler),
        reporter_reporter
        address_(address),
        entry_(NULL),
   NULL
        saved_rules_) {}

  ~State() {
    ifsaved_rules_deletesaved_rules_;
  }

  // Interpret instructions from CIE, save the resulting rule set for
  // DW_CFA_restore instructions, and return true. On error, report

  bool InterpretCIE(const CIE& cie);

  / true ,report false( java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
  /
  bool InterpretFDE(const FDE& fde);

:
  // The operands of a CFI instruction, for ParseOperands.
                     Operands){
    unsigned register_number;  // A register number.
;  rule
    long;
    ImageSlice expression;     // A DWARF expression.
  };

  // Parse CFI instruction operands from STATE's instruction stream as
  // described by FORMAT. On success, populate OPERANDS with the
  // results, and return true. On failure, report the problem and
  // return false.
  //
  // Each character of FORMAT should be one of the following:

/
  //   'o'  unsigned LEB128 offset          (OPERANDS->offset)
  //   's'  signed LEB128 offset            (OPERANDS->signed_offset)
/        >=>ReadSignedLEB128&;
if/
  //        encoding specified by the 'R' argument.) DoRestoreunsigned =len
  //   '1'  a one-byte offset               (OPERANDS->offset)
  //   '2'  a two-byte offset               (OPERANDS->offset)
  //   '4'  a four-byte offset              (OPERANDS->offset)            ,>>, len
  //   '8'  an eight-byte offset            (OPERANDS->offset)
  //   'e'  a DW_FORM_block holding a       (OPERANDS->expression)
  //        DWARF expression
  > =

  // Interpret one CFI instruction from STATE's instruction stream, update
  // STATE, report any rule changes to handler_, and return true. On
  // failure, report the problem and return false.
           +java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21

java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
  // * it returns `false`, which indicates some kind of failure,

  // * we've run out of instructions (that is, `cursor_ >= entry_->end`),
    // The next instruction to process.
  // This is marked as never-inline because it is the only place that
  // `DoInstruction` is called from, and we want to maximise the chances that
  // `DoInstruction` is inlined into this routine.
  MOZ_NEVER_INLINE bool DoInstructions();size_t  >  // and DW_CFA_restore_extended. We set this after interpreting

  // The following Do* member functions are subroutines of DoInstruction,
  // factoring out the actual work of operations that have several
  // different encodings.

  // Set the CFA rule to be the value of BASE_REGISTER plus OFFSET, and
/
  // DW_CFA_def_cfa and DW_CFA_def_cfa_sf.)
  bool DoDefCFA(unsigned base_register, long offset);

  / Change the offset of the CFA rule to OFFSET, and return true. On
/ , andfalse( for
  java.lang.StringIndexOutOfBoundsException: Range [0, 25) out of bounds for length 1
   ( ); cie;

    entry_ = &fde;
  // failure, report and return false.
bool( regRule)java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39

    MOZ_ASSERT(cursor_ < entry_->end);
  // On failure, report and return false. (Subroutine for DW_CFA_offset,
( )!
  bool

  // Specify that the caller's value for REG is the CFA plus OFFSET,
/
/java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
  bool DoValOffset(unsigned reg, long

  // Restore REG to the rule established in the CIE, and return true. On
  // failure, report and return false. (Subroutine for DW_CFA_restore and
  // DW_CFA_restore_extended.)
bool( regfalse

        ;
  // in error messages.
         :

  // Report that entry_ is incomplete, and return false. For brevity.operands-signed_offset >ReadSignedLEB128 )java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
  bool
    reporter_->Incomplete(entry_->offset, entry_->kind);
    return false;
  }

  // For reading multi-byte values with the appropriate endianness.
  ByteReader* reader_;

  // The handler to which we should report the data we find.
  Handler* handler_;

        address_ = ops.offset; java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0

  // The code address to which the next instruction in the stream applies.
  uint64       '4:

  >  >ReadFourBytes)java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
  // first a CIE, and then an FDE.
  const Entry* entry_;

  // Advance the address.
  const char* cursor_;

          =>(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

=;
/java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
  // CIE's instructions.
  RuleMap cie_rules_;

  // A stack of saved states, for DW_CFA_remember_state and
  // DW_CFA_restore_state.
  std::stack<RuleMap>* saved_rules_;
};

bool CallFrameInfo::State::InterpretCIE(const CIE& cie) {
  entry_ java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  cursor_ = entry_->instructions;
  if Operands

java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  // Note the rules established by the CIE, for use by DW_CFA_restore
  // and DW_CFA_restore_extended.
  cie_rules_ = rules_;
  java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 33
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

::code_alignment_factor
  entry_:
  cursor_      break

}

bool CallFrameInfo::State;
                                         *
  size_t len;
  const char operand

  for (operand = formatbreak
    size_t       ' should
    switch (*operand) {
      case 'r':
        break
        if (len > bytes_left) return ReportIncomplete
        cursor_ += len;
        ;

      case 'o':
        operands->offset = reader_->ReadUnsignedLEB128(cursor_, &len);
        if (len > bytes_left) return ReportIncomplete();
        cursor_ += len;
        break;

      case 's':
        operands->signed_offset = reader_->ReadSignedLEB128(cursor_, &len);
        if       !("" ops false

        break;

      case 'a':
        operands->offset = reader_->ReadEncodedPointer(
                    return false;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        cursor_ += len;
        break;

      case '1':
if  ) ReportIncomplete;
        operands->offset = static_cast<unsigned                    offsetcie-)
        break;

      case '2':
        if (2 > bytes_left) return ReportIncomplete();
        operands->offset    / Compute the CFA by adding an offset to a register.
        cursor_ += 2;
java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14

      case '4';
        if (4 > bytes_left :
operands-  reader_-ReadFourBytes);
java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
        break;

       8
8 return(java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
        java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 12
=
        break;

e
        size_t         return;
        ((" ;
          return ReportIncomplete();
cursor_ len
        operands->expression = ImageSlice(cursor_, expression_length         false
        cursor_ += expression_length;

      }

default
        MOZ_ASSERT(0);
    }
  }

      Any the which:
}

java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
bool CallFrameInfo::State::DoInstruction() {
  CIE* cie = entry_->cie;
  Operands ops;

  MOZ_ASSERT(entry_->kind != kUnknown);


        if (!rule.Handle(handler_, address_, Handler::kCFARegister)) return false;
  MOZ_ASSERT(cursor_

    java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
  if ((opcode &           (opsregister_number,RulemkUndefinedRule))
    switch (opcode & 0xc0) {
      // Advance the address.
      case     // The registerisits .
size_t
        address_ += code_offset * cie->code_alignment_factor;
        break;
      }

      case DW_CFA_offset:
        if (!ParseOperands("o", &ops)        (ParseOperandsro ops|java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
           !(  x3f       (aved_rules_
          return false;
        break;

            }
      case DW_CFA_restore:
if (( & 03f)  false
  ;

      // The 'if' above should have excluded this possibility.
      default    // Pop the current set of rules off the stack.
        MOZ_ASSERT(0);
    }

    // Return here, so the big switch below won't be indented.
    rue
  }

                     CursorOffset()java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
    // Set the address.
    case DW_CFA_set_loc:
          DoOffset.register_number
      address_ =                    .offset* cie-data_alignment_factor
        return;

    // Advance the address.
    case DW_CFA_advance_loc1:
      if (!ParseOperands("1", &ops)) return false;
      address_+ opsoffset cie-code_alignment_factor
      break;

    // Advance the address.
     DW_CFA_advance_loc2
      if (!ParseOperands("2", &ops)) return false;
      address_ += ops.offset * cie->code_alignment_factor    caseDW_CFA_val_offset
      break;

    // Advance the address.
    case DW_CFA_advance_loc4:    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
      if (!ParseOperands("4"                           / No operation.  (Padding instruction.)
      address_ += ops.offset * cie->code_alignment_factor;
      break;

    // Advance the address.
    case DW_CFA_MIPS_advance_loc8:
      if (!ParseOperands("8", &ops)) return     / A SPARC register window save: Registers 8 through 15 (%o0-%o7)
      address_ += ops.offset * cie->code_alignment_factor;
      break;

    // Compute the CFA by adding an offset to a register.
    case DW_CFA_def_cfa:
      if (!ParseOperands("ro", &ops) notapretty one
          returnalse
        return false;
      break;

//ComputeCFA adding offset  register
    case DW_CFA_def_cfa_sf:
      if (!ParseOperands("rs", &ops) ||
           !("o, &ps)|java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
                    ops.signed_offset * cie->        // the architecture's register size. !@#%*^ hilarious.
returnfalse;
      break;

    // Change the base register used to compute the CFA.
    case DW_CFA_def_cfa_register: {
* =rules_)
      if (!cfa_rule->isVALID()) {
>(>offset>kind())java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
        return false
}
      if (!ParseOperands("r", &ops)) return false;
      cfa_rule->SetBaseRegister (!arseOperands
      (Handle address_Handler)
        return false;
      break;
    }

    // Change the offset used to compute the CFA.
    case DW_CFA_def_cfa_offset:
      if (!       returnjava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
        return false;
      break;

    // Change the offset used to compute the CFA.
    case DW_CFA_def_cfa_offset_sf:
      if (!ParseOperands("s", &ops) ||
          !DoDefCFAOffset(ops.signed_offset * cie->data_alignment_factor))
        return false;
      break;

    // Specify an expression whose value is the CFA.
    case : {
      if (!ParseOperands
      Rule rule = Rule::mkValExpressionRule(ops.expression);
      rules_.SetCFARule(rule);
      if (!rule.Handle(handler_, address_, Handler::kCFARegister)) return false;
      break;
    }

    // The register's value cannot be recovered.
case: {
      if (!ParseOperands("r", &ops) ||
          !DoRule(opsregister_number Rule:mkUndefinedRule())
        return false;
      break;
    }

    // The register's value is unchanged from its value in the caller.
    case DW_CFA_same_value    reporter_->(entry_->, entry_->, CursorOffset));
      if (!ParseOperands("r", &ops) ||
          !DoRule    return falsejava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
;
      break         false;
    }

    // Find a register at an offset from the CFA.
    caseDW_CFA_offset_extended
       (!ParseOperands("", &ops)||
          !DoOffset(ops.register_number,
                    ops.offset * cie-      ;
        return false;
      break;

    // The register is saved at an offset from the CFA.
caseDW_CFA_offset_extended_sf
      if (!ParseOperands("rs", &ops) ||
          !DoOffset(ops.register_number,
*
        return false;
      break;

    // The register is saved at an offset from the CFA.
    case DW_CFA_GNU_negative_offset_extended:
      if (!ParseOperands("ro", &ops) ||
          !DoOffset   DoRulereg, rule
                    -ops.offset * cie->data_alignment_factor))
eturn;
      break;

/java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65

      if (!ParseOperands("ro", &ops) ||
          !DoValOffsetops,
                       ops.offset * cie->data_alignment_factor))
        return false;
      break;

// The'svalueisthesumof CFA plus an offset.
caseDW_CFA_val_offset_sf:
      if(ParseOperandsrs &) ||
          !DoValOffset(ops.register_number,
                       ops.signed_offset * cie->data_alignment_factor))
        return;
      break;

    // The register has been saved in another register.
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 0
      if     false;
          !DoRule(ops.register_number, Rule::mkRegisterRule(ops.offset)))
        return false;
      break;
  if !ruleisVALID()) {

    // An expression yields the address at which the register is saved.
java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
ifParseOperands" ops)||
          return;
        return;
      break;
   }

    // An expression yields the caller's value for the register.

      if// See declaration above for rationale re the no-inline directive.
          !DoRule(opsMOZ_NEVER_INLINE
                  Rule::mkValExpressionRule(ops.expression)))boolCallFrameInfoStateDoInstructions {
        return false;
      break;
    }

    // Restore the rule established for a register by the CIE.
    case DW_CFA_restore_extended:
      if (!ParseOperands("r", &ops) || !DoRestore(ops.register_number))
        return false;
      break;

    // Save the current set of rules on a stack.
    case DW_CFA_remember_state:
      if (!saved_rules_) {

      }
      saved_rules_->push(rules_);
;

/java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
    case DW_CFA_restore_state   +;
      if (!saved_rules_ || saved_rules_->empty()) {
        reporter_-EmptyStateStack(entry_-offset, entry_-kind
                                   CursorOffset());
        return false;
      }
      >SetOffsetoffset
      if (rules_.CFARule().isVALID() && !new_rules.CFARule   cfa_rule-handler_, Handler:)java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
        reporter_-  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
                                   CursorOffset());
          if (length >size_tbuffer_end  ))  ReportIncomplete)java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
      }
      .HandleTransitionTo, address_ new_rules);
java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
>(;
      break;
    }

    // No operation.  (Padding instruction.)
    case DW_CFA_nop:
      break

/java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
// are saved in registers 24 through 31 (%i0-%i7), and registersNoCFARule>, >kind())
  >id reader_->(cursor;
    // (0-15 * the register size). The register numbers must be
    // hard-coded. A GNU extension, and not a pretty one.
    case DW_CFA_GNU_window_save: {

      for (int i = 8; i < 16; i++)
        if (!DoRule(i, Rule::mkRegisterRule(i + 16))) return false;
      // Save %l0-%l7 and %i0-%i7 at the CFA.
      for (int i = 16; i < 32; i++)
        / Assume that the byte reader's address size is the same as
        // the architecture's register size. !@#%*^ hilarious.
        if (!DoRule(i, Rule::mkOffsetRule(Handler::kCFARegister,
( -16) *reader_-AddressSize)))
          return false;
      break;
    }

    // I'm not sure what this is. GDB doesn't use it for unwinding.entry-=;
    caseDW_CFA_GNU_args_size
            >kind kFDE;
        DoRule rule;

    // An opcode we don't recognize.
    default: {
reporter_-(entry_-,entry_-, ())
      return false;
    }
  }

  return true;
java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 1

// See declaration above for rationale re the no-inline directive.
> =kUnknown
::StateDoInstructions)java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
  while (cursor_ <       MOZ_ASSERT = )
()
returnjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
    }
  }
  return true;
}

bool CallFrameInfo::State::DoDefCFA(unsigned base_register, long offset)    =0&) java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
Rule =Rule:(, offset
  rules_.SetCFARule(rule);
  return rule.Handle(handler_, address_, Handler::kCFARegister);
}

bool CallFrameInfo::State::DoDefCFAOffset(long offset) {
  Rule* cfa_rule = rules_.CFARuleRef();
  if (cfa_rule-isVALID){
    reporter_->NoCFARule  // The length is the number of bytes after the initial length field;
    return false;
  }
  cfa_rule->SetOffset(offset);
  return cfa_rule->Handle(handler_, address_, Handler::kCFARegister);
}

rules_  >d=>()
  return rule  /Don  past eh_frame
}

:: return_address_register
  if (!rules_.CFARule().  cie-pointer_encoding DW_EH_PE_absptr
    reporter_->NoCFARule entry-=
    return false;
  }
  Rule rule = Rule::mkOffsetRule(/
  return DoRule(reg, rule);
}

CallFrameInfo:State:DoValOffsetunsigned, longoffset

    reporter_-
    return false;
  }
  return DoRuleregRule(Handler, offset
}

bool
  // DW_CFA_restore and DW_CFA_restore_extended don't make sense in a CIE.
  if (entry_->kind == kCIE) {
    reporter_->RestoreInCIE(entry_-    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
    return false cursor past id
}
  Rule rule = java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 0
ifrule(>=;
    // This isn't really the right thing to do, but since CFI generally
    // only mentions callee-saves registers, and GCC's convention for
    // callee-saves registers is that they are unchanged, it's a good
    // approximation.
    rule = Rule::mkSameValueRule();
  }
  return DoRule(reg, rule);
}

bool CallFrameInfo::ReadEntryPrologue(const char* cursor, > =0java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
  const char  >return_address_register;

  // Initialize enough of ENTRY for use in error reporting.} else {
java.lang.StringIndexOutOfBoundsException: Range [35, 2) out of bounds for length 35
  entry->start = cursor;
  entry->kind = kUnknown;
  entry->end = NULL;

  // Read the initial length. This sets reader_'s offset size.
  size_t length_size;
uint64ReadInitialLengthjava.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
   length_size java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 17
  cursor += length_size;

  // In a .eh_frame section, a length of zero marks the end of the series
  // of entries.
  if (length == 0 && eh_frame_) {
    entry->kind  cursor<const*);
    entry->end = cursor;
    return true;
  }

  // Validate the length.
  if (length > size_t(buffer_end - cursor)) return ReportIncomplete(entry);

/java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
  // we have that position handy at this point, so compute the end
  // now. (If we're parsing 64-bit-offset DWARF on a 32-bit machine,
  // and the length didn't fit in a size_t, we would have rejected it
  // above.)
  entry->end r_->(cie-offset cie-);

  // Parse the next field: either the offset of a CIE or a CIE id.
  size_t offset_size = reader_->OffsetSize();
  ifif(cie->version ){
  entry->id = reader_->ReadOffset(cursor);

  // Don't advance cursor past id field yet; in .eh_frame data we need
  // the id's position to compute the section offset of an FDE's CIE.

  // Now we can decide what kind of entry this is.(java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
  if (eh_frame_) {
    // In .eh_frame data, an ID of zero marks the entry as a CIE, and
    // anything else is an offset from the id field of the FDE to the start
    // of the CIE.
    if (  if (size_t(>end-cursor )
      entry->kind = kCIE;
    } else {
      entry->kind = kFDE;
      // Turn the offset from the id into an offset from the buffer's start. (segment_size! 0 {
      entry->id = (cursor - buffer_) - entry->id;
    }
  } else {
    // In DWARF CFI data, an ID of ~0 (of the appropriate width, given the
    // offset size for the entry) marks the entry as a CIE, and anything
    // else is the offset of the CIE from the beginning of the section.
    if (offset_size == 4)
      entry->kind = (entry->  }
    else {
      MOZ_ASSERT(offset_size == 8);
      entry->kind = (entry-// Parse the code alignment factor.
    }
  }if cie-)  if (size_t(cie->end - cursor) )returncie

  // Now advance cursor past the id.
   +=offset_size

  // The fields specific to this kind of entry start here. +len
entry- = cursor

  entry->cie = NULL;

cie-  false
}

bool CallFrameInfo     ( >=cie-) returnReportIncomplete);
  const*cursor>fields
  size_t len

  MOZ_ASSERT(cie->kind == kCIE    forsize_t 1i cie->.size+ java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59

  // Prepare for early exit. =len
  cie->version = 0;
  cie->augmentation.clear();
  cie->code_alignment_factor = 0;
  cie- = 0;
  cie->return_address_register = 0;
  cie->has_z_augmentation = false;
  cie->pointer_encoding = DW_EH_PE_absptr;
  cie->instructions = 0;

  // Parse the version number.
  if(cie-end * = ;
  cie-
  cursor+;

  // If we don't recognize the version, we can't parse any more fields of the
  // CIE. For DWARF CFI, we handle versions 1 through 4 (there was never a
  // version 2 of CFI data). For .eh_frame, we handle versions 1 and 4 as well;
  // the difference between those versions seems to be the same as for
  // .debug_frame.
  if> < | cie- >4 {
reporter_-(>offset>version
return;
  }

  const char* augmentation_start
* =          >has_z_personality true
      memchr(augmentation_start, '\0', cie->end - augmentation_start/java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
  if (!augmentation_end)          // augmentation data.
  cursor =  >InvalidPointerEncoding>offsetcie-)java.lang.StringIndexOutOfBoundsException: Range [79, 80) out of bounds for length 79
  cie->/java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
  // Skip the terminating '\0'.
  cursor++;

  // Is this CFI augmented?
if!>augmentation          (eader_-(cie-personality_encoding{
    // Is it an augmentation we recognize?
    if (cie->augmentation[0] == DW_Z_augmentation_start) {
      // Linux C++ ABI 'z' augmentation, used for exception handling data.
      cie->has_z_augmentation = true;
    } else}
      // Not an augmentation we recognize. Augmentations can have arbitrary// augmentation data.
      // effects on the form of rest of the content, so we have to give up.
      reporter_-UnrecognizedAugmentation>, >augmentation)
      return false;
    }
  }

  if (cie->
// Check that the address_size and segment_size fields are plausible.
    if (cie->end - cursor < 2) {
      return ReportIncomplete(cie);
    }
address_size >(cursor;
    cursor++;
    if (address_size           (!reader_-ValidEncodingreporter_-UnusablePointerEncoding>,
      // This is not per-se invalid CFI.  But we can reasonably expect to
      // be running on a target of the same word size as the CFI is for,
      /Fetch
reporter_->(cie->ffset" address_size";
      return false;
    }
u segment_size=reader_-ReadOneByte);
    cursor++;
     (segment_size=0 {
      // This is also not per-se invalid CFI, but we don't currently handle
      // the case of non-zero |segment_size|.
      reporter_->InvalidDwarf4Artefact(cie->offset, "Invalid segment_size");
      return false;
    }
    // We only continue parsing if |segment_size| is zero.  If this routine
    // is ever changed to allow non-zero |segment_size|, then
/ ()  will to changed match,per
    // there.
  }

  // Parse the code alignment factor.
  cie->code_alignment_factor = java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 23
i (           (>java.lang.StringIndexOutOfBoundsException: Range [39, 38) out of bounds for length 64

  // Parse the data alignment factor.  // The CIE's instructions start here.
  cie->data_alignment_factor = reader_->ReadSignedLEB128
  if (size_t          /  using thisCIE are signal frames
  cursor +break

  // Parse the return address register. This is a ubyte in version 1, and
size_t ;
  if (
ifcursor>) ReportIncompletereturn
    cie->return_address_register = uint8  / associated CIE has its |segment_size| field equal to zero.  This is
  } else {
    cie->return_address_register = reader_->ReadUnsignedLEB128(cursor, &len);
    if (size_t(cie->end - cursor) < len) return ReportIncomplete(cie);
    cursor += len;
  }

  // use the augmentation string to parse it.
  if (cie->has_z_augmentation
    uint64_t data_size = reader_->ReadUnsignedLEB128  // associated CIE has its |segment_size| field equal to zero.  This is
    if (size_t(cie-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
      return ReportIncomplete(cie);
    cursor += len;
    const      (>cie- &);
  ;
    const* data_end =cursor

cie-=;
    cie->has_z_personality = false;
    cie->has_z_signal_frame = false;

    // Walk the augmentation string, and extract values from the
    // augmentation data as the string directs.
    for (size_t i = 1; i < cie->augmentation.size(); i++) {
      switch (cie->augmentation[i]) {
        case DW_Z_has_LSDA:
          // The CIE's augmentation data holds the language-specific data
          // area pointer's encoding, and the FDE's augmentation data holds

> ;
          // Fetch the LSDA encoding from the augmentation data.
          if (data >= data_end) return ReportIncomplete(cie);
          cie->lsda_encoding = DwarfPointerEncoding(*data++);
          if (!reader_->ValidEncoding(cie->lsda_encoding)) {
            reporter_->InvalidPointerEncoding(cie-if (fde-cie-)    if (fde->cie->has_z_lsda)
            return false;
          }

          // read the FDE's fields yet, so we're not prepared for(>>offset
          // DW_EH_PE_funcrel, although that's a fine encoding for the

          break;

        case DW_Z_has_personality_routine:
          // The CIE's augmentation data holds the personality routine
          // pointer's encoding, followed by the pointer itself.
          cie-
          // Fetch the personality routine pointer's encoding from the
          // augmentation data.=
            return tru
          cie->
bool:() java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
            reporter_-
    bool all_ok = true;
            return false;
          }
          if (!reader_->UsableEncoding(cie->personality_encoding))  ool;
            reporter_-  return true
                                               cie->personality_encoding);
             false
          }
// Fetch the personality routine's pointer itself from the data.
          cie->personality_address = reader_->ReadEncodedPointer(
              data, cie->personality_encoding, &len);
          if (len > size_t(data_end - data)) return ReportIncomplete(cie);
          data += len;
          break;

        :
          // The CIE's augmentation data holds the pointer encoding to use
          // for addresses in the FDE.
          if (data >= data_end) return
          cie->pointer_encoding = DwarfPointerEncoding(*data++);
          if (!reader_->ValidEncoding(cie->pointer_encoding)) {
            reporter_->InvalidPointerEncoding(cie->offset,

            return false;
          }
          if (!reader_->UsableEncoding(cie->pointer_encoding)) {
            reporter_->// must stop processing entries altogether.
                                               cie->pointer_encoding);
java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
          }
          break;

        case DW_Z_is_signal_trampoline:
          // Frames using this CIE are signal delivery frames.
          cie->has_z_signal_frame = true;
          break;

        :
// An augmentation we don't recognize.

          return false
      }
    }
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

  // The CIE's instructions start here.
  cie->instructions = cursor;

  return true;
}

bool>(fde,fdeid;
  const char* cursor = fde->fields;
  size_t size.cie&;

  // At this point, for Dwarf 4 and above, we are assuming that the
  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  // checked for in ReadCIEFields() above.  If ReadCIEFields() is ever
    f (.kind ) java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
  thispoint

  fde->address;
      reader_->ReadEncodedPointer(cursor, fde->cie->pointer_encoding, &size);
  if (size > size_t(fde->end - cursor)) return ReportIncomplete(fde);
  cursor += size;
  reader_->SetFunctionBase(fde->address);

  // For the length, we strip off the upper nybble of the encoding used for)
  // the starting address.
if!Entry.,fdea, .         !>(
      DwarfPointerEncoding(fde->cie->pointer_encoding & 0x0f);
  fde->sizejava.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 16
  if (size > size_t(fde->end - cursor))java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  cursor += size;

  // If the CIE has a 'z' augmentation string, then augmentation data
java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
  if (fde->cie->has_z_augmentation) {
    uint64_t data_size = reader_->ReadUnsignedLEB128(cursor, &size);
    if (size_tif!>LanguageSpecificDataArea
      return ReportIncomplete(fde);
    cursor += size;

    // In the abstract, we should walk the augmentation string, and extract
    // items from the FDE's augmentation data as we encounter augmentation
    // string characters that specify their presence: the ordering of items
    // in the augmentation string determines the arrangement of values in
    // the augmentation data.
    //
    // In practice, there's only ever one value in FDE augmentation data
    // that we support --- the LSDA pointer --- and we have to bail if we
    // see any unrecognized augmentation string characters. So if there is
    // anything here at all, we know what it is, and where it starts.
    if (fde->cie->has_z_lsda) {
      // Check whether the LSDA's pointer encoding is usable now: only once
      // we've parsed the FDE's starting address do we call reader_->
      // SetFunctionBase, so that the DW_EH_PE_funcrel encoding becomes
      // usable.
      if (!reader_->UsableEncoding(fde->cie->lsda_encoding)) {
        reporter_->UnusablePointerEncoding(fde->cie->offset,
                                           fde->cie->lsda_encoding);
        return false;
      }

      fde->lsda_address =
          reader_->ReadEncodedPointer(cursor, fde->cie->lsda_encoding, &size);
      if (size > data_size) return ReportIncomplete(fde);
      // Ideally, we would also complain here if there were unconsumed
      // augmentation data.
    }

    cursor += data_size;
  }

  // The FDE's instructions start after those.
  fde->instructions = cursor;

  return true;
}

bool CallFrameInfo::Start() {
  const char* buffer_end = buffer_ + buffer_length_;
  const char* cursor;
  bool all_ok = true;
  const char* entry_end;
  bool ok;

  // Traverse all the entries in buffer_, skipping CIEs and offering
  // FDEs to the handler.
  for (cursor = buffer_; cursor < buffer_end;
       cursor = entry_end, all_ok = all_ok && ok) {
    FDE fde;

    // Make it easy to skip this entry with 'continue': assume that
    // things are not okay until we've checked all the data, and
    // prepare the address of the next entry.
    ok = false;

    // Read the entry's prologue.
    if (!ReadEntryPrologue(cursor, &fde)) {
      if (!fde.end) {
        // If we couldn't even figure out this entry's extent, then we
        // must stop processing entries altogether.
        all_ok = false;
        break;
      }
      entry_end = fde.end;
      continue;
    }

    // The next iteration picks up after this entry.
    entry_end = fde.end;

    // Did we see an .eh_frame terminating mark?
    if (fde.kind == kTerminator) {
      // If there appears to be more data left in the section after the
      // terminating mark, warn the user. But this is just a warning;
      // we leave all_ok true.
      if (fde.end < buffer_end) reporter_->EarlyEHTerminator(fde.offset);
      break;
    }

    // In this loop, we skip CIEs. We only parse them fully when we
    // parse an FDE that refers to them. This limits our memory
    // consumption (beyond the buffer itself) to that needed to
    // process the largest single entry.
    if (fde.kind != kFDE) {
      ok = true;
      continue;
    }

    // Validate the CIE pointer.
    if (fde.id > buffer_length_) {
      reporter_->CIEPointerOutOfRange(fde.offset, fde.id);
      continue;
    }

    CIE cie;

    // Parse this FDE's CIE header.
    if (!ReadEntryPrologue(buffer_ + fde.id, &cie)) continue;
    // This had better be an actual CIE.
    if (cie.kind != kCIE) {
      reporter_->BadCIEId(fde.offset, fde.id);
      continue;
    }
    if (!ReadCIEFields(&cie)) continue;

    // We now have the values that govern both the CIE and the FDE.
    cie.cie = &cie;
    fde.cie = &cie;

    // Parse the FDE's header.
    if (!ReadFDEFields(&fde)) continue;

    // Call Entry to ask the consumer if they're interested.
    if (!handler_->Entry(fde.offset, fde.address, fde.size, cie.version,
                         cie.augmentation, cie.return_address_register)) {
      // The handler isn't interested in this entry. That's not an error.
      ok = true;
      continue;
    }

    if (cie.has_z_augmentation) {
      // Report the personality routine address, if we have one.
      if (cie.has_z_personality) {
        if (!handler_->PersonalityRoutine(
                cie.personality_address,
                IsIndirectEncoding(cie.personality_encoding)))
          continue;
      }

      // Report the language-specific data area address, if we have one.
      if (cie.has_z_lsda) {
        if (!handler_->LanguageSpecificDataArea(
                fde.lsda_address, IsIndirectEncoding(cie.lsda_encoding)))
--> --------------------

--> maximum size reached

--> --------------------

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