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llvm-project/llvm/test/DebugInfo/X86/dwarfdump-line-only.s

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[DebugInfo] Dump a .debug_line section, including line-number program, without any compile units. Differential Revision: https://reviews.llvm.org/D40114 llvm-svn: 318842
2017-11-22 23:48:30 +08:00
# Test object to verify dwarfdump handles dumping a DWARF v5 line table
# without an associated unit.
#
# RUN: llvm-mc -triple x86_64-unknown-linux %s -filetype=obj -o - | \
# RUN: llvm-dwarfdump -v - | FileCheck %s
.section .text
# Dummy function
foo: ret
.section .debug_line,"",@progbits
# CHECK-LABEL: .debug_line contents:
# DWARF v5 line-table header.
LH_5_start:
.long LH_5_end-LH_5_version # Length of Unit (DWARF-32 format)
LH_5_version:
.short 5 # DWARF version number
.byte 8 # Address Size
.byte 0 # Segment Selector Size
.long LH_5_header_end-LH_5_params # Length of Prologue
LH_5_params:
.byte 1 # Minimum Instruction Length
.byte 1 # Maximum Operations per Instruction
.byte 1 # Default is_stmt
.byte -5 # Line Base
.byte 14 # Line Range
.byte 13 # Opcode Base
.byte 0 # Standard Opcode Lengths
.byte 1
.byte 1
.byte 1
.byte 1
.byte 0
.byte 0
.byte 0
.byte 1
.byte 0
.byte 0
.byte 1
# Directory table format
.byte 1 # One element per directory entry
.byte 1 # DW_LNCT_path
[DWARFv5] Re-enable dumping a line table with no CU. r323476 added support for DW_FORM_line_strp, and incorrectly made that depend on having a DWARFUnit available. We shouldn't be tracking .debug_line_str in DWARFUnit after all. After this patch, I can do an NFC follow up and undo a bunch of the "plumbing" part of r323476. Differential Revision: https://reviews.llvm.org/D42609 llvm-svn: 323691
2018-01-30 04:57:43 +08:00
.byte 0x0e # DW_FORM_strp (-> .debug_str)
[DebugInfo] Dump a .debug_line section, including line-number program, without any compile units. Differential Revision: https://reviews.llvm.org/D40114 llvm-svn: 318842
2017-11-22 23:48:30 +08:00
# Directory table entries
.byte 2 # Two directory entries
[DWARFv5] Re-enable dumping a line table with no CU. r323476 added support for DW_FORM_line_strp, and incorrectly made that depend on having a DWARFUnit available. We shouldn't be tracking .debug_line_str in DWARFUnit after all. After this patch, I can do an NFC follow up and undo a bunch of the "plumbing" part of r323476. Differential Revision: https://reviews.llvm.org/D42609 llvm-svn: 323691
2018-01-30 04:57:43 +08:00
.long str_D1
.long str_D2
[DebugInfo] Dump a .debug_line section, including line-number program, without any compile units. Differential Revision: https://reviews.llvm.org/D40114 llvm-svn: 318842
2017-11-22 23:48:30 +08:00
# File table format
.byte 4 # Four elements per file entry
.byte 2 # DW_LNCT_directory_index
.byte 0x0b # DW_FORM_data1
.byte 1 # DW_LNCT_path
[DWARFv5] Re-enable dumping a line table with no CU. r323476 added support for DW_FORM_line_strp, and incorrectly made that depend on having a DWARFUnit available. We shouldn't be tracking .debug_line_str in DWARFUnit after all. After this patch, I can do an NFC follow up and undo a bunch of the "plumbing" part of r323476. Differential Revision: https://reviews.llvm.org/D42609 llvm-svn: 323691
2018-01-30 04:57:43 +08:00
.byte 0x1f # DW_FORM_line_strp (-> .debug_line_str)
[DebugInfo] Dump a .debug_line section, including line-number program, without any compile units. Differential Revision: https://reviews.llvm.org/D40114 llvm-svn: 318842
2017-11-22 23:48:30 +08:00
.byte 3 # DW_LNCT_timestamp
.byte 0x0f # DW_FORM_udata
.byte 4 # DW_LNCT_size
.byte 0x0f # DW_FORM_udata
# File table entries
.byte 2 # Two file entries
[DWARFv5] Number the line-table's directory array correctly. The compilation directory has always been #0, but as of DWARF v5 it is explicitly listed in the line-table section instead of implicitly being a reference to the compile_unit DIE's DW_AT_comp_dir attribute. This means the dumper should number the dumped array starting with 0 or 1 depending on the DWARF version of the line table. References in the generated DWARF are correct, it's just the dumper that was wrong. Also some assembler-coded tests were similarly confused about directory numbers. llvm-svn: 322884
2018-01-19 04:33:35 +08:00
.byte 1
[DWARFv5] Re-enable dumping a line table with no CU. r323476 added support for DW_FORM_line_strp, and incorrectly made that depend on having a DWARFUnit available. We shouldn't be tracking .debug_line_str in DWARFUnit after all. After this patch, I can do an NFC follow up and undo a bunch of the "plumbing" part of r323476. Differential Revision: https://reviews.llvm.org/D42609 llvm-svn: 323691
2018-01-30 04:57:43 +08:00
.long ls_F1
[DebugInfo] Dump a .debug_line section, including line-number program, without any compile units. Differential Revision: https://reviews.llvm.org/D40114 llvm-svn: 318842
2017-11-22 23:48:30 +08:00
.byte 0x51
.byte 0x52
[DWARFv5] Number the line-table's directory array correctly. The compilation directory has always been #0, but as of DWARF v5 it is explicitly listed in the line-table section instead of implicitly being a reference to the compile_unit DIE's DW_AT_comp_dir attribute. This means the dumper should number the dumped array starting with 0 or 1 depending on the DWARF version of the line table. References in the generated DWARF are correct, it's just the dumper that was wrong. Also some assembler-coded tests were similarly confused about directory numbers. llvm-svn: 322884
2018-01-19 04:33:35 +08:00
.byte 0
[DWARFv5] Re-enable dumping a line table with no CU. r323476 added support for DW_FORM_line_strp, and incorrectly made that depend on having a DWARFUnit available. We shouldn't be tracking .debug_line_str in DWARFUnit after all. After this patch, I can do an NFC follow up and undo a bunch of the "plumbing" part of r323476. Differential Revision: https://reviews.llvm.org/D42609 llvm-svn: 323691
2018-01-30 04:57:43 +08:00
.long ls_F2
[DebugInfo] Dump a .debug_line section, including line-number program, without any compile units. Differential Revision: https://reviews.llvm.org/D40114 llvm-svn: 318842
2017-11-22 23:48:30 +08:00
.byte 0x53
.byte 0x54
LH_5_header_end:
# Minimal line number program with an address in it, which shows
# we picked up the address size from the line-table header.
.byte 0
.byte 9
.byte 2 # DW_LNE_set_address
.quad .text
.byte 0
.byte 1
.byte 1 # DW_LNE_end_sequence
LH_5_end:
[DWARFv5] Re-enable dumping a line table with no CU. r323476 added support for DW_FORM_line_strp, and incorrectly made that depend on having a DWARFUnit available. We shouldn't be tracking .debug_line_str in DWARFUnit after all. After this patch, I can do an NFC follow up and undo a bunch of the "plumbing" part of r323476. Differential Revision: https://reviews.llvm.org/D42609 llvm-svn: 323691
2018-01-30 04:57:43 +08:00
.section .debug_str,"MS",@progbits,1
str_D1: .asciz "Directory1"
str_D2: .asciz "Directory2"
.section .debug_line_str,"MS",@progbits,1
ls_F1: .asciz "File1"
ls_F2: .asciz "File2"
[DebugInfo] Dump a .debug_line section, including line-number program, without any compile units. Differential Revision: https://reviews.llvm.org/D40114 llvm-svn: 318842
2017-11-22 23:48:30 +08:00
# CHECK: Line table prologue:
# CHECK: version: 5
# CHECK: address_size: 8
# CHECK: seg_select_size: 0
# CHECK: max_ops_per_inst: 1
[DWARF] Regularize dumping strings from line tables. The major visible difference here is that in line-table dumps, directory and file names are wrapped in double-quotes; previously, directory names got single quotes and file names were not quoted at all. The improvement in this patch is that when a DWARF v5 line table header has indirect strings, in a verbose dump these will all have their section[offset] printed as well as the name itself. This matches the format used for dumping strings in the .debug_info section. Differential Revision: https://reviews.llvm.org/D42802 llvm-svn: 324270
2018-02-06 04:43:15 +08:00
# CHECK: include_directories[ 0] = .debug_str[0x00000000] = "Directory1"
# CHECK: include_directories[ 1] = .debug_str[0x0000000b] = "Directory2"
[DebugInfo] Dump a .debug_line section, including line-number program, without any compile units. Differential Revision: https://reviews.llvm.org/D40114 llvm-svn: 318842
2017-11-22 23:48:30 +08:00
# CHECK-NOT: include_directories
[DebugInfo] Support DWARF v5 source code embedding extension In DWARF v5 the Line Number Program Header is extensible, allowing values with new content types. In this extension a content type is added, DW_LNCT_LLVM_source, which contains the embedded source code of the file. Add new optional attribute for !DIFile IR metadata called source which contains source text. Use this to output the source to the DWARF line table of code objects. Analogously extend METADATA_FILE in Bitcode and .file directive in ASM to support optional source. Teach llvm-dwarfdump and llvm-objdump about the new values. Update the output format of llvm-dwarfdump to make room for the new attribute on file_names entries, and support embedded sources for the -source option in llvm-objdump. Differential Revision: https://reviews.llvm.org/D42765 llvm-svn: 325970
2018-02-24 07:01:06 +08:00
# CHECK: file_names[ 0]:
# CHECK-NEXT: name: .debug_line_str[0x00000000] = "File1"
# CHECK-NEXT: dir_index: 1
# CHECK-NEXT: mod_time: 0x00000051
# CHECK-NEXT: length: 0x00000052
# CHECK: file_names[ 1]:
# CHECK-NEXT: name: .debug_line_str[0x00000006] = "File2"
# CHECK-NEXT: dir_index: 0
# CHECK-NEXT: mod_time: 0x00000053
# CHECK-NEXT: length: 0x00000054
[DebugInfo] Dump a .debug_line section, including line-number program, without any compile units. Differential Revision: https://reviews.llvm.org/D40114 llvm-svn: 318842
2017-11-22 23:48:30 +08:00
# CHECK-NOT: file_names
# CHECK: 0x0000000000000000 {{.*}} is_stmt end_sequence