[gold patch] GDB index 1/2: Add new DWARF declarations
Cary Coutant
ccoutant@google.com
Thu Mar 8 20:01:00 GMT 2012
[with the patch this time]
On Thu, Mar 8, 2012 at 12:00 PM, Cary Coutant <ccoutant@google.com> wrote:
> This is the first of two patches to add --gdb-index option to gold.
> This one just adds a bunch of new DWARF declarations to elfcpp/dwarf.h
> (and a necessary fix in reduced_debug_output.cc).
>
> OK?
>
> -cary
>
>
>
> 2012-03-08 Cary Coutant <ccoutant@google.com>
>
> elfcpp/
>
> Update DWARF enums from ../include/dwarf2.h.
> * dwarf.h (enum DW_TAG): Add new DWARF-4 tags.
> (enum DW_FORM): Add new DWARF-4 and Fission extensions.
> (enum DW_AT): New enum.
> (enum DW_LINE_EXTENDED_OPS): Add new DWARF-4 opcode.
> (enum DW_ENCODING): Add new DWARF-4 encoding.
> (enum DW_OP): Add new DWARF-4 opcodes.
> (enum DW_CHILDREN): New enum.
> (enum DW_LANG): New enum.
>
> gold/
>
> * reduced_debug_output.cc
> (Output_reduced_debug_info_section::get_die_end): Add new FORM
> codes to switch.
-------------- next part --------------
2012-03-08 Cary Coutant <ccoutant@google.com>
elfcpp/
Update DWARF enums from ../include/dwarf2.h.
* dwarf.h (enum DW_TAG): Add new DWARF-4 tags.
(enum DW_FORM): Add new DWARF-4 and Fission extensions.
(enum DW_AT): New enum.
(enum DW_LINE_EXTENDED_OPS): Add new DWARF-4 opcode.
(enum DW_ENCODING): Add new DWARF-4 encoding.
(enum DW_OP): Add new DWARF-4 opcodes.
(enum DW_CHILDREN): New enum.
(enum DW_LANG): New enum.
gold/
* reduced_debug_output.cc
(Output_reduced_debug_info_section::get_die_end): Add new FORM
codes to switch.
commit e6cb455ce7bae96279cdde4d4abb9d60d31a8048
Author: Cary Coutant <ccoutant@google.com>
Date: Thu May 19 18:21:15 2011 -0700
Add new definitions for DWARF4, DW_AT_ attribute codes, and DW_CHILDREN_ flags.
Update switch statement in reduced_debug_output.cc to cover all DW_FORM_ codes.
Add DW_LANG enumerations.
Add new DW_AT and DW_FORM codes for Fission.
diff --git a/elfcpp/dwarf.h b/elfcpp/dwarf.h
index d599c97..a4e7a13 100644
--- a/elfcpp/dwarf.h
+++ b/elfcpp/dwarf.h
@@ -100,6 +100,11 @@ enum DW_TAG
DW_TAG_condition = 0x3f,
DW_TAG_shared_type = 0x40,
+ // DWARF4.
+ DW_TAG_type_unit = 0x41,
+ DW_TAG_rvalue_reference_type = 0x42,
+ DW_TAG_template_alias = 0x43,
+
// SGI/MIPS extensions.
DW_TAG_MIPS_loop = 0x4081,
@@ -147,7 +152,226 @@ enum DW_FORM
DW_FORM_ref4 = 0x13,
DW_FORM_ref8 = 0x14,
DW_FORM_ref_udata = 0x15,
- DW_FORM_indirect = 0x16
+ DW_FORM_indirect = 0x16,
+
+ // DWARF4.
+ DW_FORM_sec_offset = 0x17,
+ DW_FORM_exprloc = 0x18,
+ DW_FORM_flag_present = 0x19,
+ DW_FORM_ref_sig8 = 0x20,
+
+ // Extensions for Fission. See http://gcc.gnu.org/wiki/DebugFission.
+ DW_FORM_GNU_ref_index = 0x1f00,
+ DW_FORM_GNU_addr_index = 0x1f01,
+ DW_FORM_GNU_str_index = 0x1f02
+};
+
+/* Attribute names and codes. */
+enum DW_AT
+{
+ 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,
+ DW_AT_bit_offset = 0x0c,
+ DW_AT_bit_size = 0x0d,
+ DW_AT_element_list = 0x0f,
+ DW_AT_stmt_list = 0x10,
+ DW_AT_low_pc = 0x11,
+ DW_AT_high_pc = 0x12,
+ DW_AT_language = 0x13,
+ DW_AT_member = 0x14,
+ DW_AT_discr = 0x15,
+ DW_AT_discr_value = 0x16,
+ DW_AT_visibility = 0x17,
+ DW_AT_import = 0x18,
+ DW_AT_string_length = 0x19,
+ DW_AT_common_reference = 0x1a,
+ DW_AT_comp_dir = 0x1b,
+ DW_AT_const_value = 0x1c,
+ DW_AT_containing_type = 0x1d,
+ DW_AT_default_value = 0x1e,
+ DW_AT_inline = 0x20,
+ DW_AT_is_optional = 0x21,
+ DW_AT_lower_bound = 0x22,
+ DW_AT_producer = 0x25,
+ DW_AT_prototyped = 0x27,
+ DW_AT_return_addr = 0x2a,
+ DW_AT_start_scope = 0x2c,
+ DW_AT_bit_stride = 0x2e,
+ DW_AT_upper_bound = 0x2f,
+ DW_AT_abstract_origin = 0x31,
+ DW_AT_accessibility = 0x32,
+ DW_AT_address_class = 0x33,
+ DW_AT_artificial = 0x34,
+ DW_AT_base_types = 0x35,
+ DW_AT_calling_convention = 0x36,
+ DW_AT_count = 0x37,
+ DW_AT_data_member_location = 0x38,
+ DW_AT_decl_column = 0x39,
+ DW_AT_decl_file = 0x3a,
+ DW_AT_decl_line = 0x3b,
+ DW_AT_declaration = 0x3c,
+ DW_AT_discr_list = 0x3d,
+ DW_AT_encoding = 0x3e,
+ DW_AT_external = 0x3f,
+ DW_AT_frame_base = 0x40,
+ DW_AT_friend = 0x41,
+ DW_AT_identifier_case = 0x42,
+ DW_AT_macro_info = 0x43,
+ DW_AT_namelist_items = 0x44,
+ DW_AT_priority = 0x45,
+ DW_AT_segment = 0x46,
+ DW_AT_specification = 0x47,
+ DW_AT_static_link = 0x48,
+ DW_AT_type = 0x49,
+ DW_AT_use_location = 0x4a,
+ DW_AT_variable_parameter = 0x4b,
+ DW_AT_virtuality = 0x4c,
+ DW_AT_vtable_elem_location = 0x4d,
+
+ // DWARF3.
+ DW_AT_allocated = 0x4e,
+ DW_AT_associated = 0x4f,
+ DW_AT_data_location = 0x50,
+ DW_AT_byte_stride = 0x51,
+ DW_AT_entry_pc = 0x52,
+ DW_AT_use_UTF8 = 0x53,
+ DW_AT_extension = 0x54,
+ DW_AT_ranges = 0x55,
+ DW_AT_trampoline = 0x56,
+ DW_AT_call_column = 0x57,
+ DW_AT_call_file = 0x58,
+ DW_AT_call_line = 0x59,
+ DW_AT_description = 0x5a,
+ DW_AT_binary_scale = 0x5b,
+ DW_AT_decimal_scale = 0x5c,
+ DW_AT_small = 0x5d,
+ DW_AT_decimal_sign = 0x5e,
+ DW_AT_digit_count = 0x5f,
+ DW_AT_picture_string = 0x60,
+ DW_AT_mutable = 0x61,
+ DW_AT_threads_scaled = 0x62,
+ DW_AT_explicit = 0x63,
+ DW_AT_object_pointer = 0x64,
+ DW_AT_endianity = 0x65,
+ DW_AT_elemental = 0x66,
+ DW_AT_pure = 0x67,
+ DW_AT_recursive = 0x68,
+
+ // DWARF4.
+ DW_AT_signature = 0x69,
+ DW_AT_main_subprogram = 0x6a,
+ DW_AT_data_bit_offset = 0x6b,
+ DW_AT_const_expr = 0x6c,
+ DW_AT_enum_class = 0x6d,
+ DW_AT_linkage_name = 0x6e,
+
+ DW_AT_lo_user = 0x2000,
+ DW_AT_hi_user = 0x3fff,
+
+ // SGI/MIPS extensions.
+ DW_AT_MIPS_fde = 0x2001,
+ DW_AT_MIPS_loop_begin = 0x2002,
+ DW_AT_MIPS_tail_loop_begin = 0x2003,
+ DW_AT_MIPS_epilog_begin = 0x2004,
+ DW_AT_MIPS_loop_unroll_factor = 0x2005,
+ DW_AT_MIPS_software_pipeline_depth = 0x2006,
+ DW_AT_MIPS_linkage_name = 0x2007,
+ DW_AT_MIPS_stride = 0x2008,
+ DW_AT_MIPS_abstract_name = 0x2009,
+ DW_AT_MIPS_clone_origin = 0x200a,
+ DW_AT_MIPS_has_inlines = 0x200b,
+
+ // HP extensions.
+ DW_AT_HP_block_index = 0x2000,
+ DW_AT_HP_unmodifiable = 0x2001, // Same as DW_AT_MIPS_fde.
+ DW_AT_HP_prologue = 0x2005, // Same as DW_AT_MIPS_loop_unroll.
+ DW_AT_HP_epilogue = 0x2008, // Same as DW_AT_MIPS_stride.
+ DW_AT_HP_actuals_stmt_list = 0x2010,
+ DW_AT_HP_proc_per_section = 0x2011,
+ DW_AT_HP_raw_data_ptr = 0x2012,
+ DW_AT_HP_pass_by_reference = 0x2013,
+ DW_AT_HP_opt_level = 0x2014,
+ DW_AT_HP_prof_version_id = 0x2015,
+ DW_AT_HP_opt_flags = 0x2016,
+ DW_AT_HP_cold_region_low_pc = 0x2017,
+ DW_AT_HP_cold_region_high_pc = 0x2018,
+ DW_AT_HP_all_variables_modifiable = 0x2019,
+ DW_AT_HP_linkage_name = 0x201a,
+ DW_AT_HP_prof_flags = 0x201b, // In comp unit of procs_info for -g.
+ DW_AT_HP_unit_name = 0x201f,
+ DW_AT_HP_unit_size = 0x2020,
+ DW_AT_HP_widened_byte_size = 0x2021,
+ DW_AT_HP_definition_points = 0x2022,
+ DW_AT_HP_default_location = 0x2023,
+ DW_AT_HP_is_result_param = 0x2029,
+
+ // 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,
+
+ // Thread-safety annotations.
+ // See http://gcc.gnu.org/wiki/ThreadSafetyAnnotation .
+ DW_AT_GNU_guarded_by = 0x2108,
+ DW_AT_GNU_pt_guarded_by = 0x2109,
+ DW_AT_GNU_guarded = 0x210a,
+ DW_AT_GNU_pt_guarded = 0x210b,
+ DW_AT_GNU_locks_excluded = 0x210c,
+ DW_AT_GNU_exclusive_locks_required = 0x210d,
+ DW_AT_GNU_shared_locks_required = 0x210e,
+
+ // One-definition rule violation detection.
+ // See http://gcc.gnu.org/wiki/DwarfSeparateTypeInfo .
+ DW_AT_GNU_odr_signature = 0x210f,
+
+ // Template template argument name.
+ // See http://gcc.gnu.org/wiki/TemplateParmsDwarf .
+ DW_AT_GNU_template_name = 0x2110,
+
+ // The GNU call site extension.
+ // See http://www.dwarfstd.org/ShowIssue.php?issue=100909.2&type=open .
+ DW_AT_GNU_call_site_value = 0x2111,
+ DW_AT_GNU_call_site_data_value = 0x2112,
+ DW_AT_GNU_call_site_target = 0x2113,
+ DW_AT_GNU_call_site_target_clobbered = 0x2114,
+ DW_AT_GNU_tail_call = 0x2115,
+ DW_AT_GNU_all_tail_call_sites = 0x2116,
+ DW_AT_GNU_all_call_sites = 0x2117,
+ DW_AT_GNU_all_source_call_sites = 0x2118,
+ // Section offset into .debug_macro section.
+ DW_AT_GNU_macros = 0x2119,
+ // 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_ref_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,
+
+ // GNAT extensions.
+ // GNAT descriptive type.
+ // See http://gcc.gnu.org/wiki/DW_AT_GNAT_descriptive_type .
+ DW_AT_use_GNAT_descriptive_type = 0x2301,
+ DW_AT_GNAT_descriptive_type = 0x2302,
+
+ // 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
};
// Frame unwind information.
@@ -203,6 +427,8 @@ enum DW_LINE_EXTENDED_OPS
DW_LNE_end_sequence = 1,
DW_LNE_set_address = 2,
DW_LNE_define_file = 3,
+ // DWARF4.
+ DW_LNE_set_discriminator = 4,
// HP extensions.
DW_LNE_HP_negate_is_UV_update = 0x11,
DW_LNE_HP_push_context = 0x12,
@@ -236,6 +462,8 @@ enum DW_ENCODING
DW_ATE_signed_fixed =0xd,
DW_ATE_unsigned_fixed =0xe,
DW_ATE_decimal_float =0xf,
+ // DWARF4.
+ DW_ATE_UTF =0x10,
DW_ATE_lo_user =0x80,
DW_ATE_hi_user =0xff
};
@@ -397,6 +625,9 @@ enum DW_OP
DW_OP_form_tls_address =0x9b,
DW_OP_call_frame_cfa =0x9c,
DW_OP_bit_piece =0x9d,
+ // DWARF4.
+ DW_OP_implicit_value =0x9e,
+ DW_OP_stack_value =0x9f,
DW_OP_lo_user =0xe0,
DW_OP_hi_user =0xff,
// GNU extensions
@@ -449,6 +680,53 @@ enum DW_CFA
DW_CFA_GNU_negative_offset_extended = 0x2f
};
+enum DW_CHILDREN
+{
+ DW_CHILDREN_no =0x00,
+ DW_CHILDREN_yes =0x01
+};
+
+// Source language names and codes.
+enum DW_LANG
+ {
+ DW_LANG_C89 = 0x0001,
+ DW_LANG_C = 0x0002,
+ DW_LANG_Ada83 = 0x0003,
+ DW_LANG_C_plus_plus = 0x0004,
+ DW_LANG_Cobol74 = 0x0005,
+ DW_LANG_Cobol85 = 0x0006,
+ DW_LANG_Fortran77 = 0x0007,
+ DW_LANG_Fortran90 = 0x0008,
+ DW_LANG_Pascal83 = 0x0009,
+ DW_LANG_Modula2 = 0x000a,
+ // DWARF 3.
+ DW_LANG_Java = 0x000b,
+ DW_LANG_C99 = 0x000c,
+ DW_LANG_Ada95 = 0x000d,
+ DW_LANG_Fortran95 = 0x000e,
+ DW_LANG_PLI = 0x000f,
+ DW_LANG_ObjC = 0x0010,
+ DW_LANG_ObjC_plus_plus = 0x0011,
+ DW_LANG_UPC = 0x0012,
+ DW_LANG_D = 0x0013,
+ // DWARF 4.
+ DW_LANG_Python = 0x0014,
+ // DWARF 5.
+ DW_LANG_Go = 0x0016,
+ DW_LANG_lo_user = 0x8000, // Implementation-defined range start.
+ DW_LANG_hi_user = 0xffff, // Implementation-defined range start.
+ // MIPS.
+ DW_LANG_Mips_Assembler = 0x8001,
+ // UPC.
+ DW_LANG_Upc = 0x8765,
+ // HP extensions.
+ DW_LANG_HP_Bliss = 0x8003,
+ DW_LANG_HP_Basic91 = 0x8004,
+ DW_LANG_HP_Pascal91 = 0x8005,
+ DW_LANG_HP_IMacro = 0x8006,
+ DW_LANG_HP_Assembler = 0x8007
+ };
+
} // End namespace elfcpp.
#endif // !defined(ELFCPP_DWARF_H)
diff --git a/gold/reduced_debug_output.cc b/gold/reduced_debug_output.cc
index 93757bf..31eaf77 100644
--- a/gold/reduced_debug_output.cc
+++ b/gold/reduced_debug_output.cc
@@ -61,8 +61,10 @@ Output_reduced_debug_info_section::get_die_end(
switch(form)
{
case elfcpp::DW_FORM_null:
+ case elfcpp::DW_FORM_flag_present:
break;
case elfcpp::DW_FORM_strp:
+ case elfcpp::DW_FORM_sec_offset:
die += is64 ? 8 : 4;
break;
case elfcpp::DW_FORM_addr:
@@ -88,6 +90,7 @@ Output_reduced_debug_info_section::get_die_end(
break;
}
case elfcpp::DW_FORM_block:
+ case elfcpp::DW_FORM_exprloc:
LEB_decoded = read_unsigned_LEB_128(die, &LEB_size);
die += (LEB_decoded + LEB_size);
break;
@@ -106,6 +109,7 @@ Output_reduced_debug_info_section::get_die_end(
break;
case elfcpp::DW_FORM_data8:
case elfcpp::DW_FORM_ref8:
+ case elfcpp::DW_FORM_ref_sig8:
die += 8;
break;
case elfcpp::DW_FORM_ref_udata:
@@ -113,14 +117,20 @@ Output_reduced_debug_info_section::get_die_end(
read_unsigned_LEB_128(die, &LEB_size);
die += LEB_size;
break;
+ case elfcpp::DW_FORM_sdata:
+ read_signed_LEB_128(die, &LEB_size);
+ die += LEB_size;
+ break;
case elfcpp::DW_FORM_string:
{
size_t length = strlen(reinterpret_cast<char*>(die));
die += length + 1;
break;
}
- case elfcpp::DW_FORM_sdata:
case elfcpp::DW_FORM_indirect:
+ case elfcpp::DW_FORM_GNU_ref_index:
+ case elfcpp::DW_FORM_GNU_addr_index:
+ case elfcpp::DW_FORM_GNU_str_index:
return false;
}
}
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