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03316a5291
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
109 lines
3.6 KiB
ArmAsm
109 lines
3.6 KiB
ArmAsm
# Test object to verify dwarfdump handles dumping a DWARF v5 line table
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# without an associated unit.
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#
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# RUN: llvm-mc -triple x86_64-unknown-linux %s -filetype=obj -o - | \
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# RUN: llvm-dwarfdump -v - | FileCheck %s
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.section .text
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# Dummy function
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foo: ret
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.section .debug_line,"",@progbits
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# CHECK-LABEL: .debug_line contents:
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# DWARF v5 line-table header.
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LH_5_start:
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.long LH_5_end-LH_5_version # Length of Unit (DWARF-32 format)
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LH_5_version:
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.short 5 # DWARF version number
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.byte 8 # Address Size
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.byte 0 # Segment Selector Size
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.long LH_5_header_end-LH_5_params # Length of Prologue
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LH_5_params:
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.byte 1 # Minimum Instruction Length
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.byte 1 # Maximum Operations per Instruction
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.byte 1 # Default is_stmt
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.byte -5 # Line Base
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.byte 14 # Line Range
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.byte 13 # Opcode Base
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.byte 0 # Standard Opcode Lengths
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.byte 1
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.byte 1
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.byte 1
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.byte 1
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.byte 0
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.byte 0
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.byte 0
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.byte 1
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.byte 0
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.byte 0
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.byte 1
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# Directory table format
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.byte 1 # One element per directory entry
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.byte 1 # DW_LNCT_path
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.byte 0x0e # DW_FORM_strp (-> .debug_str)
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# Directory table entries
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.byte 2 # Two directory entries
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.long str_D1
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.long str_D2
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# File table format
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.byte 4 # Four elements per file entry
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.byte 2 # DW_LNCT_directory_index
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.byte 0x0b # DW_FORM_data1
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.byte 1 # DW_LNCT_path
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.byte 0x1f # DW_FORM_line_strp (-> .debug_line_str)
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.byte 3 # DW_LNCT_timestamp
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.byte 0x0f # DW_FORM_udata
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.byte 4 # DW_LNCT_size
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.byte 0x0f # DW_FORM_udata
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# File table entries
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.byte 2 # Two file entries
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.byte 1
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.long ls_F1
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.byte 0x51
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.byte 0x52
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.byte 0
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.long ls_F2
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.byte 0x53
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.byte 0x54
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LH_5_header_end:
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# Minimal line number program with an address in it, which shows
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# we picked up the address size from the line-table header.
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.byte 0
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.byte 9
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.byte 2 # DW_LNE_set_address
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.quad .text
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.byte 0
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.byte 1
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.byte 1 # DW_LNE_end_sequence
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LH_5_end:
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.section .debug_str,"MS",@progbits,1
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str_D1: .asciz "Directory1"
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str_D2: .asciz "Directory2"
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.section .debug_line_str,"MS",@progbits,1
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ls_F1: .asciz "File1"
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ls_F2: .asciz "File2"
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# CHECK: Line table prologue:
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# CHECK: version: 5
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# CHECK: address_size: 8
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# CHECK: seg_select_size: 0
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# CHECK: max_ops_per_inst: 1
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# CHECK: include_directories[ 0] = .debug_str[0x00000000] = "Directory1"
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# CHECK: include_directories[ 1] = .debug_str[0x0000000b] = "Directory2"
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# CHECK-NOT: include_directories
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# CHECK: file_names[ 0]:
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# CHECK-NEXT: name: .debug_line_str[0x00000000] = "File1"
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# CHECK-NEXT: dir_index: 1
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# CHECK-NEXT: mod_time: 0x00000051
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# CHECK-NEXT: length: 0x00000052
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# CHECK: file_names[ 1]:
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# CHECK-NEXT: name: .debug_line_str[0x00000006] = "File2"
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# CHECK-NEXT: dir_index: 0
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# CHECK-NEXT: mod_time: 0x00000053
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# CHECK-NEXT: length: 0x00000054
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# CHECK-NOT: file_names
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# CHECK: 0x0000000000000000 {{.*}} is_stmt end_sequence
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