1 // Check zlib-gnu style 2 // RUN: llvm-mc -filetype=obj -compress-debug-sections=zlib-gnu -triple x86_64-pc-linux-gnu < %s -o %t 3 // RUN: llvm-objdump -s %t | FileCheck --check-prefix=CHECK-GNU-STYLE %s 4 // RUN: llvm-dwarfdump -debug-dump=str %t | FileCheck --check-prefix=STR %s 5 // RUN: llvm-mc -filetype=obj -compress-debug-sections=zlib-gnu -triple i386-pc-linux-gnu < %s \ 6 // RUN: | llvm-readobj -symbols - | FileCheck --check-prefix=386-SYMBOLS-GNU %s 7 8 // Check zlib style 9 // RUN: llvm-mc -filetype=obj -compress-debug-sections=zlib -triple x86_64-pc-linux-gnu < %s -o %t 10 // RUN: llvm-objdump -s %t | FileCheck --check-prefix=CHECK-ZLIB-STYLE %s 11 // RUN: llvm-dwarfdump -debug-dump=str %t | FileCheck --check-prefix=STR %s 12 // RUN: llvm-mc -filetype=obj -compress-debug-sections=zlib -triple i386-pc-linux-gnu < %s \ 13 // RUN: | llvm-readobj -symbols - | FileCheck --check-prefix=386-SYMBOLS-ZLIB %s 14 // RUN: llvm-readobj -sections %t | FileCheck --check-prefix=ZLIB-STYLE-FLAGS %s 15 16 // REQUIRES: zlib 17 18 // Don't compress small sections, such as this simple debug_abbrev example 19 // CHECK-GNU-STYLE: Contents of section .debug_abbrev: 20 // CHECK-GNU-STYLE-NOT: ZLIB 21 // CHECK-GNU-STYLE-NOT: Contents of 22 23 // CHECK-GNU-STYLE: Contents of section .debug_info: 24 25 // CHECK-GNU-STYLE: Contents of section .zdebug_str: 26 // Check for the 'ZLIB' file magic at the start of the section only 27 // CHECK-GNU-STYLE-NEXT: ZLIB 28 // CHECK-GNU-STYLE-NOT: ZLIB 29 // FIXME: Handle compressing alignment fragments to support compressing debug_frame 30 // CHECK-GNU-STYLE: Contents of section .debug_frame: 31 // CHECK-GNU-STYLE-NOT: ZLIB 32 // CHECK-GNU-STYLE: Contents of 33 34 // Decompress one valid dwarf section just to check that this roundtrips, 35 // we use .zdebug_str section for that 36 // STR: perfectly compressable data sample ***************************************** 37 38 // In x86 32 bit named symbols are used for temporary symbols in merge 39 // sections, so make sure we handle symbols inside compressed sections 40 // 386-SYMBOLS-GNU: Name: .Linfo_string0 41 // 386-SYMBOLS-GNU-NOT: } 42 // 386-SYMBOLS-GNU: Section: .zdebug_str 43 44 // Now check the zlib style output: 45 46 // Don't compress small sections, such as this simple debug_abbrev example 47 // CHECK-ZLIB-STYLE: Contents of section .debug_abbrev: 48 // CHECK-ZLIB-STYLE-NOT: ZLIB 49 // CHECK-ZLIB-STYLE-NOT: Contents of 50 // CHECK-ZLIB-STYLE: Contents of section .debug_info: 51 // FIXME: Handle compressing alignment fragments to support compressing debug_frame 52 // CHECK-ZLIB-STYLE: Contents of section .debug_frame: 53 // CHECK-ZLIB-STYLE-NOT: ZLIB 54 // CHECK-ZLIB-STYLE: Contents of 55 56 // Check that debug_line section was not renamed, so it is 57 // zlib-style, not zlib-gnu one. Check that SHF_COMPRESSED was set. 58 // ZLIB-STYLE-FLAGS: Section { 59 // ZLIB-STYLE-FLAGS: Index: 60 // ZLIB-STYLE-FLAGS: Name: .debug_str 61 // ZLIB-STYLE-FLAGS-NEXT: Type: SHT_PROGBITS 62 // ZLIB-STYLE-FLAGS-NEXT: Flags [ 63 // ZLIB-STYLE-FLAGS-NEXT: SHF_COMPRESSED 64 65 // 386-SYMBOLS-ZLIB: Name: .Linfo_string0 66 // 386-SYMBOLS-ZLIB-NOT: } 67 // 386-SYMBOLS-ZLIB: Section: .debug_str 68 69 .section .debug_line,"",@progbits 70 71 .section .debug_abbrev,"",@progbits 72 .Lsection_abbrev: 73 .byte 1 # Abbreviation Code 74 .byte 17 # DW_TAG_compile_unit 75 .byte 0 # DW_CHILDREN_no 76 .byte 27 # DW_AT_comp_dir 77 .byte 14 # DW_FORM_strp 78 .byte 0 # EOM(1) 79 .byte 0 # EOM(2) 80 81 .section .debug_info,"",@progbits 82 .long 12 # Length of Unit 83 .short 4 # DWARF version number 84 .long .Lsection_abbrev # Offset Into Abbrev. Section 85 .byte 8 # Address Size (in bytes) 86 .byte 1 # Abbrev [1] DW_TAG_compile_unit 87 .long .Linfo_string0 # DW_AT_comp_dir 88 89 .text 90 foo: 91 .cfi_startproc 92 .file 1 "Driver.ii" 93 # pad out the line table to make sure it's big enough to warrant compression 94 .loc 1 2 0 95 nop 96 .loc 1 3 0 97 nop 98 .loc 1 4 0 99 nop 100 .loc 1 5 0 101 nop 102 .loc 1 6 0 103 nop 104 .loc 1 7 0 105 nop 106 .loc 1 8 0 107 nop 108 .cfi_endproc 109 .cfi_sections .debug_frame 110 111 # Below is the section we will use to check that after compression with llvm-mc, 112 # llvm-dwarfdump tool will be able to decompress data back and dump it. Data sample 113 # should be compressable enough, so it is filled with some amount of equal symbols at the end 114 .section .debug_str,"MS",@progbits,1 115 .Linfo_string0: 116 .asciz "perfectly compressable data sample *****************************************" 117
