Add debug fission support.

src/common/dwarf/dwarf2enums.h

 // -*- mode: c++ -*-
 
 // 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.
@@ skipping 131 matching lines @@
   DW_FORM_ref2 = 0x12,
   DW_FORM_ref4 = 0x13,
   DW_FORM_ref8 = 0x14,
   DW_FORM_ref_udata = 0x15,
   DW_FORM_indirect = 0x16,
 
   // Added in DWARF 4:
   DW_FORM_sec_offset = 0x17,
   DW_FORM_exprloc = 0x18,
   DW_FORM_flag_present = 0x19,
-  DW_FORM_ref_sig8 = 0x20
+  DW_FORM_ref_sig8 = 0x20,
+  // Extensions for Fission.  See http://gcc.gnu.org/wiki/DebugFission.
+  DW_FORM_GNU_addr_index = 0x1f01,
+  DW_FORM_GNU_str_index = 0x1f02
 };
 
 // Attribute names and codes
 enum DwarfAttribute {
   DW_AT_sibling = 0x01,
   DW_AT_location = 0x02,
   DW_AT_name = 0x03,
   DW_AT_ordering = 0x09,
   DW_AT_subscr_data = 0x0a,
   DW_AT_byte_size = 0x0b,
@@ skipping 94 matching lines @@
   DW_AT_HP_linkage_name        = 0x201a,
   DW_AT_HP_prof_flags          = 0x201b,  // In comp unit of procs_info for -g.
   // GNU extensions.
   DW_AT_sf_names   = 0x2101,
   DW_AT_src_info   = 0x2102,
   DW_AT_mac_info   = 0x2103,
   DW_AT_src_coords = 0x2104,
   DW_AT_body_begin = 0x2105,
   DW_AT_body_end   = 0x2106,
   DW_AT_GNU_vector = 0x2107,
+  DW_AT_GNU_macros = 0x2119,   ////////////needed??????????????

[vapier, 2016/04/14 22:48:47]

what's with the crazy comment ?  just delete it ?

[yunlian, 2016/04/18 21:20:51]

Done.

+  // Extensions for Fission.  See http://gcc.gnu.org/wiki/DebugFission.
+  DW_AT_GNU_dwo_name = 0x2130,
+  DW_AT_GNU_dwo_id = 0x2131,
+  DW_AT_GNU_ranges_base = 0x2132,
+  DW_AT_GNU_addr_base = 0x2133,
+  DW_AT_GNU_pubnames = 0x2134,
+  DW_AT_GNU_pubtypes = 0x2135,
   // VMS extensions.
   DW_AT_VMS_rtnbeg_pd_address = 0x2201,
   // UPC extension.
   DW_AT_upc_threads_scaled = 0x3210,
   // PGI (STMicroelectronics) extensions.
   DW_AT_PGI_lbase    = 0x3a00,
   DW_AT_PGI_soffset  = 0x3a01,
   DW_AT_PGI_lstride  = 0x3a02
 };
 
@@ skipping 207 matching lines @@
   DW_OP_push_object_address          =0x97,
   DW_OP_call2                        =0x98,
   DW_OP_call4                        =0x99,
   DW_OP_call_ref                     =0x9a,
   DW_OP_form_tls_address             =0x9b,
   DW_OP_call_frame_cfa               =0x9c,
   DW_OP_bit_piece                    =0x9d,
   DW_OP_lo_user                      =0xe0,
   DW_OP_hi_user                      =0xff,  
   // GNU extensions
-  DW_OP_GNU_push_tls_address         =0xe0
+  DW_OP_GNU_push_tls_address         =0xe0,
+  // Extensions for Fission.  See http://gcc.gnu.org/wiki/DebugFission.
+  DW_OP_GNU_addr_index               =0xfb,
+  DW_OP_GNU_const_index              =0xfc
+};
+
+// Section identifiers for DWP files
+enum DwarfSectionId {
+  DW_SECT_INFO = 1,
+  DW_SECT_TYPES = 2,
+  DW_SECT_ABBREV = 3,
+  DW_SECT_LINE = 4,
+  DW_SECT_LOC = 5,
+  DW_SECT_STR_OFFSETS = 6,
+  DW_SECT_MACINFO = 7,
+  DW_SECT_MACRO = 8
 };
 
 // Source languages.  These are values for DW_AT_language.
 enum DwarfLanguage
   {
     DW_LANG_none                     =0x0000,
     DW_LANG_C89                      =0x0001,
     DW_LANG_C                        =0x0002,
     DW_LANG_Ada83                    =0x0003,
     DW_LANG_C_plus_plus              =0x0004,
@@ skipping 136 matching lines @@
     // This is not documented in LSB 4.0, but it is used in both the
     // Linux and OS X toolchains. It can be added to any other
     // encoding (except DW_EH_PE_aligned), and indicates that the
     // encoded value represents the address at which the true address
     // is stored, not the true address itself.
     DW_EH_PE_indirect   = 0x80  
   };
 
 }  // namespace dwarf2reader
 #endif  // COMMON_DWARF_DWARF2ENUMS_H__