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llvm-project/lld/test/ELF/debug-line-obj.s

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[LLD] add test for line number info related to differrent .text sections There is a bug for llvm-objdump which incorrectly reported line number info for object file if several .text sections presented. https://bugs.llvm.org/show_bug.cgi?id=40703 . This patch adds test for the same situation. Differential revision: https://reviews.llvm.org/D58357 llvm-svn: 355306
2019-03-04 18:42:54 +08:00
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux -dwarf-version=5 %s -o %t.o
[ELF][test] Change -o %t to -o /dev/null if the output is not needed
2020-02-13 13:48:45 +08:00
# RUN: not ld.lld %t.o -o /dev/null 2>&1 | FileCheck %s
[LLD] add test for line number info related to differrent .text sections There is a bug for llvm-objdump which incorrectly reported line number info for object file if several .text sections presented. https://bugs.llvm.org/show_bug.cgi?id=40703 . This patch adds test for the same situation. Differential revision: https://reviews.llvm.org/D58357 llvm-svn: 355306
2019-03-04 18:42:54 +08:00
# When compiling with -ffunction-sections, .debug_line may contain descriptions
# of locations from the different text sections. Until relocated such
# descriptions might contain overlapping offsets. Check LLD is able to report
# the error locations correctly in this case.
# CHECK: error: undefined symbol: foo()
# CHECK-NEXT: >>> referenced by test.cpp:2
# CHECK-NEXT: >>> {{.*}}.o:(bar())
# CHECK-NEXT: >>> referenced by test.cpp:3
# CHECK-NEXT: >>> {{.*}}.o:(baz())
# The code below is the reduced version of the output
# from the following invocation and source:
#
# // test.cpp:
# int foo();
# int bar() { return foo(); }
# int baz() { return foo(); }
#
# clang -gdwarf-5 -ffunction-sections test.cpp -o test.s -S
.text
.file "test.cpp"
.section .text._Z3barv,"ax",@progbits
.globl _Z3barv
.type _Z3barv,@function
_Z3barv:
.Lfunc_begin0:
.file 0 "/path" "test.cpp" md5 0x9ff11a8404ab4d032ee2dd4f5f8c4140
[llvm] Prevent duplicate files in debug line header in dwarf 5: another attempt Another attempt to land the changes in debug line header to prevent duplicate files in Dwarf 5. I rolled back my previous commit because of a mistake in generating the object file in a test. Meanwhile, I addressed some offline comments and changed the implementation; the largest difference is that MCDwarfLineTableHeader does not keep DwarfVersion but gets it as a parameter. I also merged the patch to fix two lld tests that will strt to fail into this patch. Original Commit: https://reviews.llvm.org/D59515 Original Message: Motivation: In previous dwarf versions, file name indexes started from 1, and the primary source file was not explicit. Dwarf 5 standard (6.2.4) prescribes the primary source file to be explicitly given an entry with an index number 0. The current implementation honors the specification by just duplicating the main source file, once with index number 0, and later maybe with another index number. While this is compliant with the letter of the standard, the duplication causes problems for consumers of this information such as lldb. (Some files are duplicated, where only some of them have a line table although all refer to the same file) With this change, dwarf 5 debug line section files always start from 0, and the zeroth entry is not duplicated whenever possible. This requires different handling of dwarf 4 and dwarf 5 during generation (e.g. when a function returns an index zero for a file name, it signals an error in dwarf 4, but not in dwarf 5) However, I think the minor complication is worth it, because it enables all consumers (lldb, gdb, dwarfdump, objdump, and so on) to treat all files in the file name list homogenously. llvm-svn: 358732
2019-04-19 10:26:56 +08:00
.loc 0 2 0 # test.cpp:2:0
.loc 0 2 20 prologue_end # test.cpp:2:20
[LLD] add test for line number info related to differrent .text sections There is a bug for llvm-objdump which incorrectly reported line number info for object file if several .text sections presented. https://bugs.llvm.org/show_bug.cgi?id=40703 . This patch adds test for the same situation. Differential revision: https://reviews.llvm.org/D58357 llvm-svn: 355306
2019-03-04 18:42:54 +08:00
callq _Z3foov
[llvm] Prevent duplicate files in debug line header in dwarf 5: another attempt Another attempt to land the changes in debug line header to prevent duplicate files in Dwarf 5. I rolled back my previous commit because of a mistake in generating the object file in a test. Meanwhile, I addressed some offline comments and changed the implementation; the largest difference is that MCDwarfLineTableHeader does not keep DwarfVersion but gets it as a parameter. I also merged the patch to fix two lld tests that will strt to fail into this patch. Original Commit: https://reviews.llvm.org/D59515 Original Message: Motivation: In previous dwarf versions, file name indexes started from 1, and the primary source file was not explicit. Dwarf 5 standard (6.2.4) prescribes the primary source file to be explicitly given an entry with an index number 0. The current implementation honors the specification by just duplicating the main source file, once with index number 0, and later maybe with another index number. While this is compliant with the letter of the standard, the duplication causes problems for consumers of this information such as lldb. (Some files are duplicated, where only some of them have a line table although all refer to the same file) With this change, dwarf 5 debug line section files always start from 0, and the zeroth entry is not duplicated whenever possible. This requires different handling of dwarf 4 and dwarf 5 during generation (e.g. when a function returns an index zero for a file name, it signals an error in dwarf 4, but not in dwarf 5) However, I think the minor complication is worth it, because it enables all consumers (lldb, gdb, dwarfdump, objdump, and so on) to treat all files in the file name list homogenously. llvm-svn: 358732
2019-04-19 10:26:56 +08:00
.loc 0 2 13 is_stmt 0 # test.cpp:2:13
[LLD] add test for line number info related to differrent .text sections There is a bug for llvm-objdump which incorrectly reported line number info for object file if several .text sections presented. https://bugs.llvm.org/show_bug.cgi?id=40703 . This patch adds test for the same situation. Differential revision: https://reviews.llvm.org/D58357 llvm-svn: 355306
2019-03-04 18:42:54 +08:00
.Lfunc_end0:
.size _Z3barv, .Lfunc_end0-_Z3barv
# -- End function
.section .text._Z3bazv,"ax",@progbits
.globl _Z3bazv # -- Begin function _Z3bazv
.type _Z3bazv,@function
_Z3bazv: # @_Z3bazv
.Lfunc_begin1:
[llvm] Prevent duplicate files in debug line header in dwarf 5: another attempt Another attempt to land the changes in debug line header to prevent duplicate files in Dwarf 5. I rolled back my previous commit because of a mistake in generating the object file in a test. Meanwhile, I addressed some offline comments and changed the implementation; the largest difference is that MCDwarfLineTableHeader does not keep DwarfVersion but gets it as a parameter. I also merged the patch to fix two lld tests that will strt to fail into this patch. Original Commit: https://reviews.llvm.org/D59515 Original Message: Motivation: In previous dwarf versions, file name indexes started from 1, and the primary source file was not explicit. Dwarf 5 standard (6.2.4) prescribes the primary source file to be explicitly given an entry with an index number 0. The current implementation honors the specification by just duplicating the main source file, once with index number 0, and later maybe with another index number. While this is compliant with the letter of the standard, the duplication causes problems for consumers of this information such as lldb. (Some files are duplicated, where only some of them have a line table although all refer to the same file) With this change, dwarf 5 debug line section files always start from 0, and the zeroth entry is not duplicated whenever possible. This requires different handling of dwarf 4 and dwarf 5 during generation (e.g. when a function returns an index zero for a file name, it signals an error in dwarf 4, but not in dwarf 5) However, I think the minor complication is worth it, because it enables all consumers (lldb, gdb, dwarfdump, objdump, and so on) to treat all files in the file name list homogenously. llvm-svn: 358732
2019-04-19 10:26:56 +08:00
.loc 0 3 0 is_stmt 1 # test.cpp:3:0
.loc 0 3 20 prologue_end # test.cpp:3:20
[LLD] add test for line number info related to differrent .text sections There is a bug for llvm-objdump which incorrectly reported line number info for object file if several .text sections presented. https://bugs.llvm.org/show_bug.cgi?id=40703 . This patch adds test for the same situation. Differential revision: https://reviews.llvm.org/D58357 llvm-svn: 355306
2019-03-04 18:42:54 +08:00
callq _Z3foov
[llvm] Prevent duplicate files in debug line header in dwarf 5: another attempt Another attempt to land the changes in debug line header to prevent duplicate files in Dwarf 5. I rolled back my previous commit because of a mistake in generating the object file in a test. Meanwhile, I addressed some offline comments and changed the implementation; the largest difference is that MCDwarfLineTableHeader does not keep DwarfVersion but gets it as a parameter. I also merged the patch to fix two lld tests that will strt to fail into this patch. Original Commit: https://reviews.llvm.org/D59515 Original Message: Motivation: In previous dwarf versions, file name indexes started from 1, and the primary source file was not explicit. Dwarf 5 standard (6.2.4) prescribes the primary source file to be explicitly given an entry with an index number 0. The current implementation honors the specification by just duplicating the main source file, once with index number 0, and later maybe with another index number. While this is compliant with the letter of the standard, the duplication causes problems for consumers of this information such as lldb. (Some files are duplicated, where only some of them have a line table although all refer to the same file) With this change, dwarf 5 debug line section files always start from 0, and the zeroth entry is not duplicated whenever possible. This requires different handling of dwarf 4 and dwarf 5 during generation (e.g. when a function returns an index zero for a file name, it signals an error in dwarf 4, but not in dwarf 5) However, I think the minor complication is worth it, because it enables all consumers (lldb, gdb, dwarfdump, objdump, and so on) to treat all files in the file name list homogenously. llvm-svn: 358732
2019-04-19 10:26:56 +08:00
.loc 0 3 13 is_stmt 0 # test.cpp:3:13
[LLD] add test for line number info related to differrent .text sections There is a bug for llvm-objdump which incorrectly reported line number info for object file if several .text sections presented. https://bugs.llvm.org/show_bug.cgi?id=40703 . This patch adds test for the same situation. Differential revision: https://reviews.llvm.org/D58357 llvm-svn: 355306
2019-03-04 18:42:54 +08:00
.Lfunc_end1:
.size _Z3bazv, .Lfunc_end1-_Z3bazv
.section .debug_str,"MS",@progbits,1
.Linfo_string0:
.asciz "stub"
.section .debug_str_offsets,"",@progbits
.long 8
.short 5
.short 0
.Lstr_offsets_base0:
.long .Linfo_string0
.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 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 .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
.Ldebug_info_start0:
.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:0x44 DW_TAG_compile_unit
.byte 0 # DW_AT_producer
.short 4 # DW_AT_language
.byte 0 # DW_AT_name
.long .Lstr_offsets_base0 # DW_AT_str_offsets_base
.long .Lline_table_start0 # DW_AT_stmt_list
.byte 2 # DW_AT_comp_dir
.long 0 # DW_AT_addr_base
.quad 0 # DW_AT_low_pc
.byte 0 # DW_AT_ranges
.long 0 # 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 0 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 2 # DW_AT_decl_line
.long 75 # DW_AT_type
# DW_AT_external
.byte 2 # Abbrev [2] 0x3b:0x10 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_linkage_name
.byte 0 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 3 # DW_AT_decl_line
.long 75 # DW_AT_type
# DW_AT_external
.byte 3 # Abbrev [3] 0x4b:0x4 DW_TAG_base_type
.byte 0 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 0 # End Of Children Mark
.Ldebug_info_end0:
.section .debug_line,"",@progbits
.Lline_table_start0: