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