42e7ad6c73
(init_cutu_and_read_dies): Handle rereading a DWO CU while it's currently being read. Propagate DW_AT_comp_dir to DWO DIE. testsuite/ * gdb.dwarf2/fission-reread.S: New file. * gdb.dwarf2/fission-reread.exp: New file.
459 lines
13 KiB
ArmAsm
459 lines
13 KiB
ArmAsm
/* Copyright 2012 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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/* Testcase to exercise the code path in bug 13961 for Fission.
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http://gcc.gnu.org/wiki/DebugFission
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Compiled from:
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class foo
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{
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public:
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int bar;
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};
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foo baz;
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int
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main ()
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{
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return 0;
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}
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And then manually edited to insert the necessary DW_AT_specification
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entries to trigger the desired code path.
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There's no real need to make this architecture-specific, so it has been
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further hand-edited to support that.
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*/
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.file "fission-reread.cc"
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.globl baz
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.bss
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.align 4
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.type baz, @object
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.size baz, 4
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baz:
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.zero 4
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.text
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.Ltext0:
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.globl main
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.type main, @function
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main:
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.LFB0:
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.file 1 "fission-reread.cc"
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.loc 1 11 0
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.4byte 0
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.LFE0:
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.size main, .-main
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.Letext0:
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.section .debug_types.dwo,"G",@progbits,wt.198b7eaccef12290,comdat
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.Ltu_start_dwo:
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.4byte .Ltu_end_dwo - .Ltu_start_dwo - 4 # Length of Compilation Unit Info
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.2byte 0x4 # DWARF version number
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.4byte .Ldebug_abbrev0 # Offset Into Abbrev. Section
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.byte 0x8 # Pointer Size (in bytes)
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.byte 0x19 # Type Signature
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.byte 0x8b
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.byte 0x7e
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.byte 0xac
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.byte 0xce
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.byte 0xf1
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.byte 0x22
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.byte 0x90
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.4byte .Ltu_class_type - .Ltu_start_dwo # Offset to Type DIE
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.uleb128 0x1 # (DIE (0x17) DW_TAG_type_unit)
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.byte 0x4 # DW_AT_language
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.byte 0x73 # DW_AT_GNU_odr_signature
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.byte 0xea
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.byte 0x85
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.byte 0x23
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.byte 0x75
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.byte 0x8a
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.byte 0x7e
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.byte 0x87
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.4byte .Lskeleton_debug_line0 # DW_AT_stmt_list
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/* Manually inserted to have a DW_AT_specification refering to
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something and appearing ahead of it. */
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.uleb128 0x8 /* DW_TAG_class_type */
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.4byte .Ltu_class_type - .Ltu_start_dwo
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/* End of manual insertion */
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.Ltu_class_type:
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.uleb128 0x2 # (DIE (0x25) DW_TAG_class_type)
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.ascii "foo\0" # DW_AT_name
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.byte 0x4 # DW_AT_byte_size
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.byte 0x1 # DW_AT_decl_file (fission-reread.cc)
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.byte 0x1 # DW_AT_decl_line
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.4byte .Ltu_int # DW_AT_sibling
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.uleb128 0x3 # (DIE (0x31) DW_TAG_member)
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.ascii "bar\0" # DW_AT_name
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.byte 0x1 # DW_AT_decl_file (fission-reread.cc)
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.byte 0x4 # DW_AT_decl_line
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.4byte .Ltu_int # DW_AT_type
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.byte 0 # DW_AT_data_member_location
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.byte 0x1 # DW_AT_accessibility
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.byte 0 # end of children of DIE 0x25
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.Ltu_int:
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.uleb128 0x4 # (DIE (0x3f) 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 "int\0" # DW_AT_name
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.byte 0 # end of children of DIE 0x17
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.Ltu_end_dwo:
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.section .debug_types,"G",@progbits,wt.198b7eaccef12290,comdat
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.Ltu_start:
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.4byte .Ltu_end - .Ltu_start - 4 # Length of Type Unit Info
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.2byte 0x4 # DWARF version number
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.4byte .Lskeleton_debug_abbrev0 # Offset Into Abbrev. Section
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.byte 0x8 # Pointer Size (in bytes)
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.byte 0x19 # Type Signature
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.byte 0x8b
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.byte 0x7e
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.byte 0xac
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.byte 0xce
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.byte 0xf1
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.byte 0x22
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.byte 0x90
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.4byte 0 # Offset to Type DIE
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.uleb128 0x2 # (DIE (0) DW_TAG_type_unit)
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.ascii "/tmp/src/gdb/testsuite/gdb.dwarf2\0" # DW_AT_comp_dir
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# Normally dwo_name would be "fission-reread.dwo".
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# Simplification: Leave the DWO contents in the executable.
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.ascii "fission-reread\0" # DW_AT_GNU_dwo_name
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.4byte .Ldebug_pubnames0 # DW_AT_GNU_pubnames
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.4byte .Ldebug_pubtypes0 # DW_AT_GNU_pubtypes
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.4byte .Ldebug_addr0 # DW_AT_GNU_addr_base
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.Ltu_end:
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.section .debug_info.dwo,"",@progbits
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.Lcu_start_dwo:
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.4byte .Lcu_end_dwo - .Lcu_start_dwo - 4 # Length of Compilation Unit Info
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.2byte 0x4 # DWARF version number
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.4byte .Ldebug_abbrev0 # Offset Into Abbrev. Section
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.byte 0x8 # Pointer Size (in bytes)
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.uleb128 0x5 # (DIE (0xb) DW_TAG_compile_unit)
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.ascii "GNU C++ 4.6.x-fission\0" # DW_AT_producer
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.byte 0x4 # DW_AT_language
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.ascii "fission-reread.cc\0" # DW_AT_name
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.ascii "/tmp/src/gdb/testsuite/gdb.dwarf2\0" # DW_AT_comp_dir
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.byte 0 # DW_AT_GNU_dwo_id
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.byte 0
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.byte 0
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.byte 0
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.byte 0
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.byte 0
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.byte 0
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.byte 0
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.Lcu_int:
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.uleb128 0x4 # (DIE (0x7f) 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 "int\0" # DW_AT_name
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.uleb128 0x6 # (DIE (0x86) DW_TAG_subprogram)
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# DW_AT_external
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.ascii "main\0" # DW_AT_name
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.byte 0x1 # DW_AT_decl_file (fission-reread.cc)
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.byte 0xa # DW_AT_decl_line
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.4byte .Lcu_int # DW_AT_type
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.uleb128 0 # DW_AT_low_pc
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.8byte .LFE0-.LFB0 # DW_AT_high_pc
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.uleb128 0x1 # DW_AT_frame_base
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.byte 0x9c # DW_OP_call_frame_cfa
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.uleb128 0x7 # (DIE (0x9d) DW_TAG_variable)
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.ascii "baz\0" # DW_AT_name
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.byte 0x1 # DW_AT_decl_file (fission-reread.cc)
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.byte 0x7 # DW_AT_decl_line
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.byte 0x19 # DW_AT_type
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.byte 0x8b
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.byte 0x7e
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.byte 0xac
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.byte 0xce
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.byte 0xf1
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.byte 0x22
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.byte 0x90
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# DW_AT_external
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.uleb128 0x2 # DW_AT_location
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.byte 0xfb # DW_OP_GNU_addr_index
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.uleb128 0x1 # (index into .debug_addr)
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.byte 0 # end of children of DIE 0xb
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.Lcu_end_dwo:
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.section .debug_info,"",@progbits
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.Lskeleton_debug_info0:
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.Lcu_start:
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.4byte .Lcu_end - .Lcu_start - 4 # Length of Compilation Unit Info
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.2byte 0x4 # DWARF version number
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.4byte .Lskeleton_debug_abbrev0 # Offset Into Abbrev. Section
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.byte 0x8 # Pointer Size (in bytes)
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.uleb128 0x1 # (DIE (0) DW_TAG_compile_unit)
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.8byte .Ltext0 # DW_AT_low_pc
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.8byte .Letext0-.Ltext0 # DW_AT_high_pc
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.4byte .Ldebug_line0 # DW_AT_stmt_list
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.ascii "/tmp/src/gdb/testsuite/gdb.dwarf2\0" # DW_AT_comp_dir
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# Normally dwo_name would be "fission-reread.dwo".
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# Simplification: Leave the DWO contents in the executable.
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.ascii "fission-reread\0" # DW_AT_GNU_dwo_name
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.4byte .Ldebug_pubnames0 # DW_AT_GNU_pubnames
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.4byte .Ldebug_pubtypes0 # DW_AT_GNU_pubtypes
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.4byte .Ldebug_addr0 # DW_AT_GNU_addr_base
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.byte 0 # DW_AT_GNU_dwo_id
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.byte 0
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.byte 0
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.byte 0
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.byte 0
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.byte 0
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.byte 0
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.byte 0
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.Lcu_end:
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.section .debug_abbrev,"",@progbits
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.Lskeleton_debug_abbrev0:
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.uleb128 0x1 # (abbrev code)
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.uleb128 0x11 # (TAG: DW_TAG_compile_unit)
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.byte 0 # DW_children_no
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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 0x7 # (DW_FORM_data8)
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.uleb128 0x10 # (DW_AT_stmt_list)
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.uleb128 0x17 # (DW_FORM_sec_offset)
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.uleb128 0x1b # (DW_AT_comp_dir)
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.uleb128 0x8 # (DW_FORM_string)
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.uleb128 0x2130 # (DW_AT_GNU_dwo_name)
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.uleb128 0x8 # (DW_FORM_string)
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.uleb128 0x2134 # (DW_AT_GNU_pubnames)
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.uleb128 0x17 # (DW_FORM_sec_offset)
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.uleb128 0x2135 # (DW_AT_GNU_pubtypes)
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.uleb128 0x17 # (DW_FORM_sec_offset)
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.uleb128 0x2133 # (DW_AT_GNU_addr_base)
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.uleb128 0x17 # (DW_FORM_sec_offset)
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.uleb128 0x2131 # (DW_AT_GNU_dwo_id)
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.uleb128 0x7 # (DW_FORM_data8)
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.byte 0
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.byte 0
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.uleb128 0x2 # (abbrev code)
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.uleb128 0x41 # (TAG: DW_TAG_type_unit)
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.byte 0 # DW_children_no
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.uleb128 0x1b # (DW_AT_comp_dir)
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.uleb128 0x8 # (DW_FORM_string)
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.uleb128 0x2130 # (DW_AT_GNU_dwo_name)
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.uleb128 0x8 # (DW_FORM_string)
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.uleb128 0x2134 # (DW_AT_GNU_pubnames)
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.uleb128 0x17 # (DW_FORM_sec_offset)
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.uleb128 0x2135 # (DW_AT_GNU_pubtypes)
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.uleb128 0x17 # (DW_FORM_sec_offset)
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.uleb128 0x2133 # (DW_AT_GNU_addr_base)
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.uleb128 0x17 # (DW_FORM_sec_offset)
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.byte 0
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.byte 0
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.byte 0 # end of skeleton .debug_abbrev
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.section .debug_abbrev.dwo,"",@progbits
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.Ldebug_abbrev0:
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.uleb128 0x1 # (abbrev code)
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.uleb128 0x41 # (TAG: DW_TAG_type_unit)
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.byte 0x1 # DW_children_yes
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.uleb128 0x13 # (DW_AT_language)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x210f # (DW_AT_GNU_odr_signature)
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.uleb128 0x7 # (DW_FORM_data8)
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.uleb128 0x10 # (DW_AT_stmt_list)
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.uleb128 0x17 # (DW_FORM_sec_offset)
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.byte 0
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.byte 0
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.uleb128 0x2 # (abbrev code)
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.uleb128 0x2 # (TAG: DW_TAG_class_type)
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.byte 0x1 # DW_children_yes
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.uleb128 0x3 # (DW_AT_name)
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.uleb128 0x8 # (DW_FORM_string)
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.uleb128 0xb # (DW_AT_byte_size)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x3a # (DW_AT_decl_file)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x3b # (DW_AT_decl_line)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x1 # (DW_AT_sibling)
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.uleb128 0x13 # (DW_FORM_ref4)
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.byte 0
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.byte 0
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.uleb128 0x3 # (abbrev code)
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.uleb128 0xd # (TAG: DW_TAG_member)
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.byte 0 # DW_children_no
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.uleb128 0x3 # (DW_AT_name)
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.uleb128 0x8 # (DW_FORM_string)
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.uleb128 0x3a # (DW_AT_decl_file)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x3b # (DW_AT_decl_line)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x49 # (DW_AT_type)
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.uleb128 0x13 # (DW_FORM_ref4)
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.uleb128 0x38 # (DW_AT_data_member_location)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x32 # (DW_AT_accessibility)
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.uleb128 0xb # (DW_FORM_data1)
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.byte 0
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.byte 0
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.uleb128 0x4 # (abbrev code)
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.uleb128 0x24 # (TAG: DW_TAG_base_type)
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.byte 0 # 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 0
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.byte 0
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.uleb128 0x5 # (abbrev code)
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.uleb128 0x11 # (TAG: DW_TAG_compile_unit)
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.byte 0x1 # DW_children_yes
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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 0x3 # (DW_AT_name)
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.uleb128 0x8 # (DW_FORM_string)
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.uleb128 0x1b # (DW_AT_comp_dir)
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.uleb128 0x8 # (DW_FORM_string)
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.uleb128 0x2131 # (DW_AT_GNU_dwo_id)
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.uleb128 0x7 # (DW_FORM_data8)
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.byte 0
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.byte 0
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.uleb128 0x6 # (abbrev code)
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.uleb128 0x2e # (TAG: DW_TAG_subprogram)
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.byte 0 # DW_children_no
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.uleb128 0x3f # (DW_AT_external)
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.uleb128 0x19 # (DW_FORM_flag_present)
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.uleb128 0x3 # (DW_AT_name)
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.uleb128 0x8 # (DW_FORM_string)
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.uleb128 0x3a # (DW_AT_decl_file)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x3b # (DW_AT_decl_line)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x49 # (DW_AT_type)
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.uleb128 0x13 # (DW_FORM_ref4)
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.uleb128 0x11 # (DW_AT_low_pc)
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.uleb128 0x1f01 # (DW_FORM_GNU_addr_index)
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.uleb128 0x12 # (DW_AT_high_pc)
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.uleb128 0x7 # (DW_FORM_data8)
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.uleb128 0x40 # (DW_AT_frame_base)
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.uleb128 0x18 # (DW_FORM_exprloc)
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|
.byte 0
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.byte 0
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.uleb128 0x7 # (abbrev code)
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.uleb128 0x34 # (TAG: DW_TAG_variable)
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.byte 0 # DW_children_no
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.uleb128 0x3 # (DW_AT_name)
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.uleb128 0x8 # (DW_FORM_string)
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.uleb128 0x3a # (DW_AT_decl_file)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x3b # (DW_AT_decl_line)
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.uleb128 0xb # (DW_FORM_data1)
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.uleb128 0x49 # (DW_AT_type)
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.uleb128 0x20 # (DW_FORM_ref_sig8)
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.uleb128 0x3f # (DW_AT_external)
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.uleb128 0x19 # (DW_FORM_flag_present)
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.uleb128 0x2 # (DW_AT_location)
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.uleb128 0x18 # (DW_FORM_exprloc)
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.byte 0
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.byte 0
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/* Manually inserted. */
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.uleb128 0x8 /* abbrev code */
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.uleb128 0x2 /* DW_TAG_class_type */
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.byte 0x0 /* DW_has_children_no */
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.uleb128 0x47 /* DW_AT_specification */
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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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/* End of manual insertion. */
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.byte 0
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.section .debug_pubnames,"",@progbits
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.Ldebug_pubnames0:
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.4byte 0x1f # Length of Public Names Info
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.2byte 0x2 # DWARF Version
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.4byte .Lskeleton_debug_info0 # Offset of Compilation Unit Info
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.4byte 0xb0 # Compilation Unit Length
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.4byte 0x86 # DIE offset
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.ascii "main\0" # external name
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.4byte 0x9d # DIE offset
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.ascii "baz\0" # external name
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.4byte 0
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.section .debug_pubtypes,"",@progbits
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.Ldebug_pubtypes0:
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.4byte 0x1e # Length of Public Type Names Info
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.2byte 0x2 # DWARF Version
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.4byte .Lskeleton_debug_info0 # Offset of Compilation Unit Info
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.4byte 0xb0 # Compilation Unit Length
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.4byte 0x7f # DIE offset
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.ascii "int\0" # external name
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.4byte 0x25 # DIE offset
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.ascii "foo\0" # external name
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.4byte 0
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.section .debug_aranges,"",@progbits
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|
.4byte 0x2c # Length of Address Ranges Info
|
|
.2byte 0x2 # DWARF Version
|
|
.4byte .Lskeleton_debug_info0 # Offset of Compilation Unit Info
|
|
.byte 0x8 # Size of Address
|
|
.byte 0 # Size of Segment Descriptor
|
|
.2byte 0 # Pad to 16 byte boundary
|
|
.2byte 0
|
|
.8byte .Ltext0 # Address
|
|
.8byte .Letext0-.Ltext0 # Length
|
|
.8byte 0
|
|
.8byte 0
|
|
.section .debug_line,"",@progbits
|
|
.Ldebug_line0:
|
|
.section .debug_line.dwo,"",@progbits
|
|
.Lskeleton_debug_line0:
|
|
.4byte .LELT0-.LSLT0 # Length of Source Line Info
|
|
.LSLT0:
|
|
.2byte 0x4 # DWARF Version
|
|
.4byte .LELTP0-.LASLTP0 # Prolog Length
|
|
.LASLTP0:
|
|
.byte 0x1 # Minimum Instruction Length
|
|
.byte 0x1 # Maximum Operations Per Instruction
|
|
.byte 0x1 # Default is_stmt_start flag
|
|
.byte 0xf6 # Line Base Value (Special Opcodes)
|
|
.byte 0xf5 # Line Range Value (Special Opcodes)
|
|
.byte 0xa # Special Opcode Base
|
|
.byte 0 # opcode: 0x1 has 0 args
|
|
.byte 0x1 # opcode: 0x2 has 1 args
|
|
.byte 0x1 # opcode: 0x3 has 1 args
|
|
.byte 0x1 # opcode: 0x4 has 1 args
|
|
.byte 0x1 # opcode: 0x5 has 1 args
|
|
.byte 0 # opcode: 0x6 has 0 args
|
|
.byte 0 # opcode: 0x7 has 0 args
|
|
.byte 0 # opcode: 0x8 has 0 args
|
|
.byte 0x1 # opcode: 0x9 has 1 args
|
|
.byte 0 # End directory table
|
|
.ascii "fission-reread.cc\0" # File Entry: 0x1
|
|
.uleb128 0
|
|
.uleb128 0
|
|
.uleb128 0
|
|
.byte 0 # End file name table
|
|
.LELTP0:
|
|
.LELT0:
|
|
.section .debug_addr,"",@progbits
|
|
.Ldebug_addr0:
|
|
.8byte .LFB0 # DW_AT_low_pc
|
|
.8byte baz # DW_AT_location
|
|
|
|
.section .note.GNU-stack,"",@progbits
|