mozglue/baseprofiler/lul/LulDwarfInt.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3
   4 // Copyright (c) 2008, 2010 Google Inc. All Rights Reserved.
   5 //
   6 // Redistribution and use in source and binary forms, with or without
   7 // modification, are permitted provided that the following conditions are
   8 // met:
   9 //
  10 //     * Redistributions of source code must retain the above copyright
  11 // notice, this list of conditions and the following disclaimer.
  12 //     * Redistributions in binary form must reproduce the above
  13 // copyright notice, this list of conditions and the following disclaimer
  14 // in the documentation and/or other materials provided with the
  15 // distribution.
  16 //     * Neither the name of Google Inc. nor the names of its
  17 // contributors may be used to endorse or promote products derived from
  18 // this software without specific prior written permission.
  19 //
  20 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31
  32 // CFI reader author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
  33
  34 // This file is derived from the following file in
  35 // toolkit/crashreporter/google-breakpad:
  36 //   src/common/dwarf/dwarf2enums.h
  37
  38 #ifndef LulDwarfInt_h
  39 #define LulDwarfInt_h
  40
  41 #include "LulCommonExt.h"
  42 #include "LulDwarfExt.h"
  43
  44 namespace lul {
  45
  46 // These enums do not follow the google3 style only because they are
  47 // known universally (specs, other implementations) by the names in
  48 // exactly this capitalization.
  49 // Tag names and codes.
  50
  51 // Call Frame Info instructions.
  52 enum DwarfCFI {
  53   DW_CFA_advance_loc = 0x40,
  54   DW_CFA_offset = 0x80,
  55   DW_CFA_restore = 0xc0,
  56   DW_CFA_nop = 0x00,
  57   DW_CFA_set_loc = 0x01,
  58   DW_CFA_advance_loc1 = 0x02,
  59   DW_CFA_advance_loc2 = 0x03,
  60   DW_CFA_advance_loc4 = 0x04,
  61   DW_CFA_offset_extended = 0x05,
  62   DW_CFA_restore_extended = 0x06,
  63   DW_CFA_undefined = 0x07,
  64   DW_CFA_same_value = 0x08,
  65   DW_CFA_register = 0x09,
  66   DW_CFA_remember_state = 0x0a,
  67   DW_CFA_restore_state = 0x0b,
  68   DW_CFA_def_cfa = 0x0c,
  69   DW_CFA_def_cfa_register = 0x0d,
  70   DW_CFA_def_cfa_offset = 0x0e,
  71   DW_CFA_def_cfa_expression = 0x0f,
  72   DW_CFA_expression = 0x10,
  73   DW_CFA_offset_extended_sf = 0x11,
  74   DW_CFA_def_cfa_sf = 0x12,
  75   DW_CFA_def_cfa_offset_sf = 0x13,
  76   DW_CFA_val_offset = 0x14,
  77   DW_CFA_val_offset_sf = 0x15,
  78   DW_CFA_val_expression = 0x16,
  79
  80   // Opcodes in this range are reserved for user extensions.
  81   DW_CFA_lo_user = 0x1c,
  82   DW_CFA_hi_user = 0x3f,
  83
  84   // SGI/MIPS specific.
  85   DW_CFA_MIPS_advance_loc8 = 0x1d,
  86
  87   // GNU extensions.
  88   DW_CFA_GNU_window_save = 0x2d,
  89   DW_CFA_GNU_args_size = 0x2e,
  90   DW_CFA_GNU_negative_offset_extended = 0x2f
  91 };
  92
  93 // Exception handling 'z' augmentation letters.
  94 enum DwarfZAugmentationCodes {
  95   // If the CFI augmentation string begins with 'z', then the CIE and FDE
  96   // have an augmentation data area just before the instructions, whose
  97   // contents are determined by the subsequent augmentation letters.
  98   DW_Z_augmentation_start = 'z',
  99
 100   // If this letter is present in a 'z' augmentation string, the CIE
 101   // augmentation data includes a pointer encoding, and the FDE
 102   // augmentation data includes a language-specific data area pointer,
 103   // represented using that encoding.
 104   DW_Z_has_LSDA = 'L',
 105
 106   // If this letter is present in a 'z' augmentation string, the CIE
 107   // augmentation data includes a pointer encoding, followed by a pointer
 108   // to a personality routine, represented using that encoding.
 109   DW_Z_has_personality_routine = 'P',
 110
 111   // If this letter is present in a 'z' augmentation string, the CIE
 112   // augmentation data includes a pointer encoding describing how the FDE's
 113   // initial location, address range, and DW_CFA_set_loc operands are
 114   // encoded.
 115   DW_Z_has_FDE_address_encoding = 'R',
 116
 117   // If this letter is present in a 'z' augmentation string, then code
 118   // addresses covered by FDEs that cite this CIE are signal delivery
 119   // trampolines. Return addresses of frames in trampolines should not be
 120   // adjusted as described in section 6.4.4 of the DWARF 3 spec.
 121   DW_Z_is_signal_trampoline = 'S'
 122 };
 123
 124 // Expression opcodes
 125 enum DwarfExpressionOpcodes {
 126   DW_OP_addr = 0x03,
 127   DW_OP_deref = 0x06,
 128   DW_OP_const1s = 0x09,
 129   DW_OP_const2u = 0x0a,
 130   DW_OP_const2s = 0x0b,
 131   DW_OP_const4u = 0x0c,
 132   DW_OP_const4s = 0x0d,
 133   DW_OP_const8u = 0x0e,
 134   DW_OP_const8s = 0x0f,
 135   DW_OP_constu = 0x10,
 136   DW_OP_consts = 0x11,
 137   DW_OP_dup = 0x12,
 138   DW_OP_drop = 0x13,
 139   DW_OP_over = 0x14,
 140   DW_OP_pick = 0x15,
 141   DW_OP_swap = 0x16,
 142   DW_OP_rot = 0x17,
 143   DW_OP_xderef = 0x18,
 144   DW_OP_abs = 0x19,
 145   DW_OP_and = 0x1a,
 146   DW_OP_div = 0x1b,
 147   DW_OP_minus = 0x1c,
 148   DW_OP_mod = 0x1d,
 149   DW_OP_mul = 0x1e,
 150   DW_OP_neg = 0x1f,
 151   DW_OP_not = 0x20,
 152   DW_OP_or = 0x21,
 153   DW_OP_plus = 0x22,
 154   DW_OP_plus_uconst = 0x23,
 155   DW_OP_shl = 0x24,
 156   DW_OP_shr = 0x25,
 157   DW_OP_shra = 0x26,
 158   DW_OP_xor = 0x27,
 159   DW_OP_skip = 0x2f,
 160   DW_OP_bra = 0x28,
 161   DW_OP_eq = 0x29,
 162   DW_OP_ge = 0x2a,
 163   DW_OP_gt = 0x2b,
 164   DW_OP_le = 0x2c,
 165   DW_OP_lt = 0x2d,
 166   DW_OP_ne = 0x2e,
 167   DW_OP_lit0 = 0x30,
 168   DW_OP_lit31 = 0x4f,
 169   DW_OP_reg0 = 0x50,
 170   DW_OP_reg31 = 0x6f,
 171   DW_OP_breg0 = 0x70,
 172   DW_OP_breg31 = 0x8f,
 173   DW_OP_regx = 0x90,
 174   DW_OP_fbreg = 0x91,
 175   DW_OP_bregx = 0x92,
 176   DW_OP_piece = 0x93,
 177   DW_OP_deref_size = 0x94,
 178   DW_OP_xderef_size = 0x95,
 179   DW_OP_nop = 0x96,
 180   DW_OP_push_object_address = 0x97,
 181   DW_OP_call2 = 0x98,
 182   DW_OP_call4 = 0x99,
 183   DW_OP_call_ref = 0x9a,
 184   DW_OP_form_tls_address = 0x9b,
 185   DW_OP_call_frame_cfa = 0x9c,
 186   DW_OP_bit_piece = 0x9d,
 187   DW_OP_lo_user = 0xe0,
 188   DW_OP_hi_user = 0xff
 189 };
 190
 191 }  // namespace lul
 192
 193 #endif  // LulDwarfInt_h