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llvm-project/lld/test/ELF/gdb-index-rng-lists.s

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[LLD][ELF] - Improve the DWARF v5 suport for building .gdb_index. Now LLD might build the broken/incomplete .gdb_index when some DWARF v5 sections (like .debug_rnglists and .debug_addr) are used. Particularly, for the case above, we emit an empty address area. A test case is provided and patch fixes the issue. Differential revision: https://reviews.llvm.org/D55109 llvm-svn: 348119
2018-12-03 18:48:57 +08:00
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t1.o
gdb-index: Wire up str_offsets section to avoid incorrect error message about offsets_base There's still a need for a deeper fix to the way libDebugInfoDWARF error messages are propagated up to lld - if lld had exited non-zero on this error message we would've found the issue sooner. llvm-svn: 368229
2019-08-08 06:49:14 +08:00
# RUN: ld.lld --gdb-index %t1.o -o %t 2>&1 | FileCheck --check-prefix=LLD %s
[LLD][ELF] - Improve the DWARF v5 suport for building .gdb_index. Now LLD might build the broken/incomplete .gdb_index when some DWARF v5 sections (like .debug_rnglists and .debug_addr) are used. Particularly, for the case above, we emit an empty address area. A test case is provided and patch fixes the issue. Differential revision: https://reviews.llvm.org/D55109 llvm-svn: 348119
2018-12-03 18:48:57 +08:00
# RUN: llvm-dwarfdump -gdb-index %t | FileCheck %s
gdb-index: Wire up str_offsets section to avoid incorrect error message about offsets_base There's still a need for a deeper fix to the way libDebugInfoDWARF error messages are propagated up to lld - if lld had exited non-zero on this error message we would've found the issue sooner. llvm-svn: 368229
2019-08-08 06:49:14 +08:00
# FIXME: Remove this once lld correctly returns non-zero on errors like this
# There's no other behavior to test hidden behind this error - lld only parses
# the CU for the address ranges, it doesn't need to decode any strings.
# LLD-NOT: error:
[LLD][ELF] - Improve the DWARF v5 suport for building .gdb_index. Now LLD might build the broken/incomplete .gdb_index when some DWARF v5 sections (like .debug_rnglists and .debug_addr) are used. Particularly, for the case above, we emit an empty address area. A test case is provided and patch fixes the issue. Differential revision: https://reviews.llvm.org/D55109 llvm-svn: 348119
2018-12-03 18:48:57 +08:00
## The code contains DWARF v5 sections .debug_rnglists and .debug_addr.
## Check we are able to build the correct address
## area using address range lists.
# CHECK: .gdb_index contents:
# CHECK: Address area offset = 0x28, has 2 entries:
[ELF][X86] Allow PT_LOAD to have overlapping p_offset ranges on EM_X86_64 Port the D64906 technique to EM_X86_64. Differential Revision: https://reviews.llvm.org/D67482 llvm-svn: 371958
2019-09-16 15:05:34 +08:00
# CHECK-NEXT: Low/High address = [0x201120, 0x201121) (Size: 0x1), CU id = 0
# CHECK-NEXT: Low/High address = [0x201121, 0x201123) (Size: 0x2), CU id = 0
[LLD][ELF] - Improve the DWARF v5 suport for building .gdb_index. Now LLD might build the broken/incomplete .gdb_index when some DWARF v5 sections (like .debug_rnglists and .debug_addr) are used. Particularly, for the case above, we emit an empty address area. A test case is provided and patch fixes the issue. Differential revision: https://reviews.llvm.org/D55109 llvm-svn: 348119
2018-12-03 18:48:57 +08:00
.text
.section .text._Z3zedv,"ax",@progbits
.Lfunc_begin0:
retq
.Lfunc_end0:
.section .text.main,"ax",@progbits
.Lfunc_begin1:
retq
retq
.Lfunc_end1:
.section .debug_str_offsets,"",@progbits
.long 32
.short 5
.short 0
.Lstr_offsets_base0:
.long .Linfo_string0
.long .Linfo_string0
.long .Linfo_string0
.long .Linfo_string0
.long .Linfo_string0
.long .Linfo_string0
.long .Linfo_string0
.section .debug_str,"MS",@progbits,1
.Linfo_string0:
.asciz "stub"
.section .debug_abbrev,"",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 1 # DW_CHILDREN_yes
.byte 37 # DW_AT_producer
.byte 37 # DW_FORM_strx1
.byte 19 # DW_AT_language
.byte 5 # DW_FORM_data2
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 114 # DW_AT_str_offsets_base
.byte 23 # DW_FORM_sec_offset
.byte 16 # DW_AT_stmt_list
.byte 23 # DW_FORM_sec_offset
.byte 27 # DW_AT_comp_dir
.byte 37 # DW_FORM_strx1
.byte 115 # DW_AT_addr_base
.byte 23 # DW_FORM_sec_offset
.byte 17 # DW_AT_low_pc
.byte 1 # DW_FORM_addr
.byte 85 # DW_AT_ranges
.byte 35 # DW_FORM_rnglistx
.byte 116 # DW_AT_rnglists_base
.byte 23 # DW_FORM_sec_offset
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 2 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 0 # DW_CHILDREN_no
.byte 17 # DW_AT_low_pc
.byte 27 # DW_FORM_addrx
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 64 # DW_AT_frame_base
.byte 24 # DW_FORM_exprloc
.byte 110 # DW_AT_linkage_name
.byte 37 # DW_FORM_strx1
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 3 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 0 # DW_CHILDREN_no
.byte 17 # DW_AT_low_pc
.byte 27 # DW_FORM_addrx
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 64 # DW_AT_frame_base
.byte 24 # DW_FORM_exprloc
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 4 # Abbreviation Code
.byte 36 # DW_TAG_base_type
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 62 # DW_AT_encoding
.byte 11 # DW_FORM_data1
.byte 11 # DW_AT_byte_size
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
.section .debug_info,"",@progbits
.Lcu_begin0:
.long 75 # Length of Unit
.short 5 # DWARF version number
.byte 1 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 1 # Abbrev [1] 0xc:0x43 DW_TAG_compile_unit
.byte 0 # DW_AT_producer
.short 4 # DW_AT_language
.byte 1 # DW_AT_name
.long .Lstr_offsets_base0 # DW_AT_str_offsets_base
.long 0 # DW_AT_stmt_list
.byte 2 # DW_AT_comp_dir
.long .Laddr_table_base0 # DW_AT_addr_base
.quad 0 # DW_AT_low_pc
.byte 0 # DW_AT_ranges
.long .Lrnglists_table_base0 # DW_AT_rnglists_base
.byte 2 # Abbrev [2] 0x2b:0x10 DW_TAG_subprogram
.byte 0 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
.byte 86
.byte 3 # DW_AT_linkage_name
.byte 4 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 74 # DW_AT_type
# DW_AT_external
.byte 3 # Abbrev [3] 0x3b:0xf DW_TAG_subprogram
.byte 1 # DW_AT_low_pc
.long .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
.byte 86
.byte 6 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 5 # DW_AT_decl_line
.long 74 # DW_AT_type
# DW_AT_external
.byte 4 # Abbrev [4] 0x4a:0x4 DW_TAG_base_type
.byte 5 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 0 # End Of Children Mark
.section .debug_rnglists,"",@progbits
.long .Ldebug_rnglist_table_end0-.Ldebug_rnglist_table_start0 # Length
.Ldebug_rnglist_table_start0:
.short 5 # Version
.byte 8 # Address size
.byte 0 # Segment selector size
.long 1 # Offset entry count
.Lrnglists_table_base0:
.long .Ldebug_ranges0-.Lrnglists_table_base0
.Ldebug_ranges0:
.byte 3 # DW_RLE_startx_length
.byte 0 # start index
.uleb128 .Lfunc_end0-.Lfunc_begin0 # length
.byte 3 # DW_RLE_startx_length
.byte 1 # start index
.uleb128 .Lfunc_end1-.Lfunc_begin1 # length
.byte 0 # DW_RLE_end_of_list
.Ldebug_rnglist_table_end0:
.section .debug_addr,"",@progbits
.long 20
.short 5
.byte 8
.byte 0
.Laddr_table_base0:
.quad .Lfunc_begin0
.quad .Lfunc_begin1