77e7aaa4bd
When running gdb.dwarf2/dw2-case-insensitive.exp with target board
cc-with-debug-names, we run into:
...
FAIL: gdb.dwarf2/dw2-case-insensitive.exp: regexp case-sensitive off \
(GDB internal error)
...
in more detail:
...
(gdb) info functions fUnC_lang
gdb/dwarf2read.c:5293: internal-error: \
compunit_symtab* dw2_find_pc_sect_compunit_symtab(objfile*, \
bound_minimal_symbol, CORE_ADDR, obj_section*, int): \
Assertion `result != NULL' failed.
...
The problem is that the .debug_aranges section in dw2-case-insensitive-debug.S
contains a debug_info_offset which is set to 0:
...
.section .debug_aranges,"",@progbits
.4byte .Laranges_end - .Laranges_start
.Laranges_start:
.2byte 0x2
.4byte 0
...
while the compilation unit at offset 0 in the .debug_section of the executable
is in fact not the compilation unit generated from
dw2-case-insensitive-debug.S.
This happens when linked in object files contain dwarf info and are placed in
the .debug_info section before the compilation unit generated from
dw2-case-insensitive-debug.S.
Fix this by defining the debug_info_offset field using the label .Lcu1_begin
that defines the start of the compilation unit:
...
- .4byte 0
+ .4byte .Lcu1_begin
...
Tested on x86_64-linux with native, cc-with-gdb-index and cc-with-debug-names.
gdb/testsuite/ChangeLog:
2019-05-07 Tom de Vries <tdevries@suse.de>
PR testsuite/24522
* gdb.dwarf2/dw2-case-insensitive-debug.S: Fix debug_info_offset in
.debug_aranges section.
128 lines
4.1 KiB
ArmAsm
128 lines
4.1 KiB
ArmAsm
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2011-2019 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#if PTRBITS == 64
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# define PTRBYTE .8byte
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#elif PTRBITS == 32
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# define PTRBYTE .4byte
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#else
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# error "Unsupported pointer size"
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#endif
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.section .debug_info
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.Lcu1_begin:
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/* CU header */
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.4byte .Lcu1_end - .Lcu1_start /* Length of Compilation Unit */
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.Lcu1_start:
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.2byte 2 /* DWARF Version */
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.4byte .Labbrev1_begin /* Offset into abbrev section */
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.byte PTRBITS / 8 /* Pointer size */
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/* CU die */
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.uleb128 1 /* Abbrev: DW_TAG_compile_unit */
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.ascii "file1.txt\0" /* DW_AT_name */
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.ascii "GNU C 3.3.3\0" /* DW_AT_producer */
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.byte 8 /* DW_AT_language (DW_LANG_Fortran90) */
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PTRBYTE cu_text_start /* DW_AT_low_pc */
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PTRBYTE cu_text_end /* DW_AT_high_pc */
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.uleb128 3 /* Abbrev: DW_TAG_subprogram */
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.byte 1 /* DW_AT_external */
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.ascii "FUNC_lang\0" /* DW_AT_name */
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PTRBYTE FUNC_lang_start /* DW_AT_low_pc */
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PTRBYTE FUNC_lang_end /* DW_AT_high_pc */
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.byte 1 /* DW_AT_prototyped */
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.4byte .Ltype - .Lcu1_begin /* DW_AT_type */
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.Ltype:
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.uleb128 0x5 /* Abbrev: DW_TAG_base_type */
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.byte 0x4 /* DW_AT_byte_size */
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.byte 0x5 /* DW_AT_encoding */
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.ascii "foo\0" /* DW_AT_name */
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.byte 0 /* End of children of CU */
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.Lcu1_end:
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/* The .debug_names-based index support depends on
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.debug_aranges generated by GCC. (.gdb_index includes a
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gdb-generated map instead.) */
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.section .debug_aranges,"",@progbits
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.4byte .Laranges_end - .Laranges_start // Length of Address Ranges Info
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.Laranges_start:
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.2byte 0x2 // DWARF Version
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.4byte .Lcu1_begin // .Ldebug_info0 - Offset of Compilation Unit Info
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.byte PTRBITS / 8 // Size of Address
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.byte 0 // Size of Segment Descriptor
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.2byte 0 // Pad to 16 byte boundary
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.2byte 0
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PTRBYTE cu_text_start // Address
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PTRBYTE 0x1000 // cu_text_end - cu_text_start // Length
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PTRBYTE 0
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PTRBYTE 0
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.Laranges_end:
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/* Abbrev table */
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.section .debug_abbrev
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.Labbrev1_begin:
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.uleb128 1 /* Abbrev code */
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.uleb128 0x11 /* DW_TAG_compile_unit */
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.byte 1 /* has_children */
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.uleb128 0x3 /* DW_AT_name */
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.uleb128 0x8 /* DW_FORM_string */
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.uleb128 0x25 /* DW_AT_producer */
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.uleb128 0x8 /* DW_FORM_string */
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.uleb128 0x13 /* DW_AT_language */
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.uleb128 0xb /* DW_FORM_data1 */
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.uleb128 0x11 /* DW_AT_low_pc */
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.uleb128 0x1 /* DW_FORM_addr */
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.uleb128 0x12 /* DW_AT_high_pc */
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.uleb128 0x1 /* DW_FORM_addr */
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.byte 0x0 /* Terminator */
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.byte 0x0 /* Terminator */
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.uleb128 3 /* Abbrev code */
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.uleb128 0x2e /* DW_TAG_subprogram */
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.byte 0 /* has_children */
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.uleb128 0x3f /* DW_AT_external */
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.uleb128 0xc /* DW_FORM_flag */
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.uleb128 0x3 /* DW_AT_name */
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.uleb128 0x8 /* DW_FORM_string */
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.uleb128 0x11 /* DW_AT_low_pc */
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.uleb128 0x1 /* DW_FORM_addr */
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.uleb128 0x12 /* DW_AT_high_pc */
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.uleb128 0x1 /* DW_FORM_addr */
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.uleb128 0x27 /* DW_AT_prototyped */
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.uleb128 0xc /* DW_FORM_flag */
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.uleb128 0x49 /* DW_AT_type */
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.uleb128 0x13 /* DW_FORM_ref4 */
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.byte 0x0 /* Terminator */
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.byte 0x0 /* Terminator */
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.uleb128 0x5 /* Abbrev code */
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.uleb128 0x24 /* DW_TAG_base_type */
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.byte 0x0 /* DW_children_no */
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.uleb128 0xb /* DW_AT_byte_size */
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.uleb128 0xb /* DW_FORM_data1 */
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.uleb128 0x3e /* DW_AT_encoding */
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.uleb128 0xb /* DW_FORM_data1 */
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.uleb128 0x3 /* DW_AT_name */
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.uleb128 0x8 /* DW_FORM_string */
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.byte 0x0 /* Terminator */
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.byte 0x0 /* Terminator */
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.byte 0x0 /* Terminator */
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.byte 0x0 /* Terminator */
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