1 // RUN: llvm-mc -filetype=obj -compress-debug-sections -triple x86_64-pc-linux-gnu < %s -o %t
2 // RUN: llvm-objdump -s %t | FileCheck %s
3 // RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck --check-prefix=INFO %s
4 // RUN: llvm-mc -filetype=obj -compress-debug-sections -triple i386-pc-linux-gnu < %s \
5 // RUN: | llvm-readobj -symbols - | FileCheck --check-prefix=386-SYMBOLS %s
9 // CHECK: Contents of section .zdebug_line:
10 // Check for the 'ZLIB' file magic at the start of the section only
14 // Don't compress small sections, such as this simple debug_abbrev example
15 // CHECK: Contents of section .debug_abbrev:
17 // CHECK-NOT: Contents of
19 // CHECK: Contents of section .debug_info:
21 // FIXME: Handle compressing alignment fragments to support compressing debug_frame
22 // CHECK: Contents of section .debug_frame:
26 // Decompress one valid dwarf section just to check that this roundtrips
27 // INFO: 0x00000000: Compile Unit: length = 0x0000000c version = 0x0004 abbr_offset = 0x0000 addr_size = 0x08 (next unit at 0x00000010)
29 // In x86 32 bit named symbols are used for temporary symbols in merge
30 // sections, so make sure we handle symbols inside compressed sections
31 // 386-SYMBOLS: Symbol {
32 // 386-SYMBOLS-NEXT: Name: (0)
33 // 386-SYMBOLS-NEXT: Value: 0x0
34 // 386-SYMBOLS-NEXT: Size: 0
35 // 386-SYMBOLS-NEXT: Binding: Local (0x0)
36 // 386-SYMBOLS-NEXT: Type: None (0x0)
37 // 386-SYMBOLS-NEXT: Other: 0
38 // 386-SYMBOLS-NEXT: Section: Undefined (0x0)
39 // 386-SYMBOLS-NEXT: }
40 // 386-SYMBOLS-NEXT: Symbol {
41 // 386-SYMBOLS-NEXT: Name: (0)
42 // 386-SYMBOLS-NEXT: Value: 0x0
43 // 386-SYMBOLS-NEXT: Size: 0
44 // 386-SYMBOLS-NEXT: Binding: Local (0x0)
45 // 386-SYMBOLS-NEXT: Type: None (0x0)
46 // 386-SYMBOLS-NEXT: Other: 0
47 // 386-SYMBOLS-NEXT: Section: .zdebug_str (0xA)
48 // 386-SYMBOLS-NEXT: }
50 .section .debug_line,"",@progbits
52 .section .debug_abbrev,"",@progbits
54 .byte 1 # Abbreviation Code
55 .byte 17 # DW_TAG_compile_unit
56 .byte 0 # DW_CHILDREN_no
57 .byte 27 # DW_AT_comp_dir
58 .byte 14 # DW_FORM_strp
62 .section .debug_info,"",@progbits
63 .long 12 # Length of Unit
64 .short 4 # DWARF version number
65 .long .Lsection_abbrev # Offset Into Abbrev. Section
66 .byte 8 # Address Size (in bytes)
67 .byte 1 # Abbrev [1] DW_TAG_compile_unit
68 .long .Linfo_string0 # DW_AT_comp_dir
74 # pad out the line table to make sure it's big enough to warrant compression
90 .cfi_sections .debug_frame
92 .section .debug_str,"MS",@progbits,1
94 .asciz "compress this "