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37ec73c718
As discussed on llvm-dev in http://lists.llvm.org/pipermail/llvm-dev/2017-September/117301.html this changes the command line interface of llvm-dwarfdump to match the one used by the dwarfdump utility shipping on macOS. In addition to being shorter to type this format also has the advantage of allowing more than one section to be specified at the same time. In a nutshell, with this change $ llvm-dwarfdump --debug-dump=info $ llvm-dwarfdump --debug-dump=apple-objc becomes $ dwarfdump --debug-info --apple-objc Differential Revision: https://reviews.llvm.org/D37714 llvm-svn: 312970
117 lines
4.5 KiB
ArmAsm
117 lines
4.5 KiB
ArmAsm
// Check zlib-gnu style
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// RUN: llvm-mc -filetype=obj -compress-debug-sections=zlib-gnu -triple x86_64-pc-linux-gnu < %s -o %t
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// RUN: llvm-objdump -s %t | FileCheck --check-prefix=CHECK-GNU-STYLE %s
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// RUN: llvm-dwarfdump -debug-str %t | FileCheck --check-prefix=STR %s
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// RUN: llvm-mc -filetype=obj -compress-debug-sections=zlib-gnu -triple i386-pc-linux-gnu < %s \
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// RUN: | llvm-readobj -symbols - | FileCheck --check-prefix=386-SYMBOLS-GNU %s
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// Check zlib style
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// RUN: llvm-mc -filetype=obj -compress-debug-sections=zlib -triple x86_64-pc-linux-gnu < %s -o %t
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// RUN: llvm-objdump -s %t | FileCheck --check-prefix=CHECK-ZLIB-STYLE %s
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// RUN: llvm-dwarfdump -debug-str %t | FileCheck --check-prefix=STR %s
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// RUN: llvm-mc -filetype=obj -compress-debug-sections=zlib -triple i386-pc-linux-gnu < %s \
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// RUN: | llvm-readobj -symbols - | FileCheck --check-prefix=386-SYMBOLS-ZLIB %s
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// RUN: llvm-readobj -sections %t | FileCheck --check-prefix=ZLIB-STYLE-FLAGS %s
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// REQUIRES: zlib
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// Don't compress small sections, such as this simple debug_abbrev example
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// CHECK-GNU-STYLE: Contents of section .debug_abbrev:
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// CHECK-GNU-STYLE-NOT: ZLIB
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// CHECK-GNU-STYLE-NOT: Contents of
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// CHECK-GNU-STYLE: Contents of section .debug_info:
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// CHECK-GNU-STYLE: Contents of section .zdebug_str:
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// Check for the 'ZLIB' file magic at the start of the section only
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// CHECK-GNU-STYLE-NEXT: ZLIB
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// CHECK-GNU-STYLE-NOT: ZLIB
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// FIXME: Handle compressing alignment fragments to support compressing debug_frame
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// CHECK-GNU-STYLE: Contents of section .debug_frame:
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// CHECK-GNU-STYLE-NOT: ZLIB
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// CHECK-GNU-STYLE: Contents of
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// Decompress one valid dwarf section just to check that this roundtrips,
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// we use .zdebug_str section for that
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// STR: perfectly compressable data sample *****************************************
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// In x86 32 bit named symbols are used for temporary symbols in merge
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// sections, so make sure we handle symbols inside compressed sections
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// 386-SYMBOLS-GNU: Name: .Linfo_string0
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// 386-SYMBOLS-GNU-NOT: }
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// 386-SYMBOLS-GNU: Section: .zdebug_str
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// Now check the zlib style output:
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// Don't compress small sections, such as this simple debug_abbrev example
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// CHECK-ZLIB-STYLE: Contents of section .debug_abbrev:
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// CHECK-ZLIB-STYLE-NOT: ZLIB
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// CHECK-ZLIB-STYLE-NOT: Contents of
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// CHECK-ZLIB-STYLE: Contents of section .debug_info:
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// FIXME: Handle compressing alignment fragments to support compressing debug_frame
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// CHECK-ZLIB-STYLE: Contents of section .debug_frame:
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// CHECK-ZLIB-STYLE-NOT: ZLIB
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// CHECK-ZLIB-STYLE: Contents of
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// Check that debug_line section was not renamed, so it is
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// zlib-style, not zlib-gnu one. Check that SHF_COMPRESSED was set.
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// ZLIB-STYLE-FLAGS: Section {
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// ZLIB-STYLE-FLAGS: Index:
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// ZLIB-STYLE-FLAGS: Name: .debug_str
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// ZLIB-STYLE-FLAGS-NEXT: Type: SHT_PROGBITS
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// ZLIB-STYLE-FLAGS-NEXT: Flags [
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// ZLIB-STYLE-FLAGS-NEXT: SHF_COMPRESSED
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// 386-SYMBOLS-ZLIB: Name: .Linfo_string0
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// 386-SYMBOLS-ZLIB-NOT: }
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// 386-SYMBOLS-ZLIB: Section: .debug_str
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.section .debug_line,"",@progbits
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.section .debug_abbrev,"",@progbits
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.Lsection_abbrev:
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.byte 1 # Abbreviation Code
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.byte 17 # DW_TAG_compile_unit
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.byte 0 # DW_CHILDREN_no
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.byte 27 # DW_AT_comp_dir
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.byte 14 # DW_FORM_strp
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.section .debug_info,"",@progbits
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.long 12 # Length of Unit
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.short 4 # DWARF version number
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.long .Lsection_abbrev # Offset Into Abbrev. Section
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.byte 8 # Address Size (in bytes)
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.byte 1 # Abbrev [1] DW_TAG_compile_unit
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.long .Linfo_string0 # DW_AT_comp_dir
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.text
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foo:
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.cfi_startproc
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.file 1 "Driver.ii"
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# pad out the line table to make sure it's big enough to warrant compression
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.loc 1 2 0
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nop
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.loc 1 3 0
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nop
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.loc 1 4 0
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nop
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.loc 1 5 0
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nop
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.loc 1 6 0
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nop
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.loc 1 7 0
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nop
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.loc 1 8 0
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nop
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.cfi_endproc
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.cfi_sections .debug_frame
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# Below is the section we will use to check that after compression with llvm-mc,
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# llvm-dwarfdump tool will be able to decompress data back and dump it. Data sample
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# should be compressable enough, so it is filled with some amount of equal symbols at the end
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.section .debug_str,"MS",@progbits,1
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.Linfo_string0:
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.asciz "perfectly compressable data sample *****************************************"
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