91 lines
4.0 KiB
ArmAsm
91 lines
4.0 KiB
ArmAsm
## Show that llvm-dwarfdump prints a range of different structures in the
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## .debug_abbrev section when requested. As well as basic cases, this test also
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## shows how llvm-dwarfdump handles unknown tag, attribute and form values.
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# RUN: llvm-mc %s -filetype obj -triple x86_64-pc-linux -o %t.o
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# RUN: llvm-dwarfdump --debug-abbrev %t.o | FileCheck %s --match-full-lines
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# CHECK: .debug_abbrev contents:
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# CHECK-NEXT: Abbrev table for offset: 0x00000000
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# CHECK-NEXT: [66] DW_TAG_compile_unit DW_CHILDREN_yes
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# CHECK-NEXT: DW_AT_name DW_FORM_string
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# CHECK-NEXT: DW_AT_stmt_list DW_FORM_data2
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# CHECK-EMPTY:
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# CHECK-NEXT: [128] DW_TAG_unknown_ffff DW_CHILDREN_no
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# CHECK-NEXT: DW_AT_unknown_5 DW_FORM_unknown_2
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# CHECK-EMPTY:
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# CHECK-NEXT: [66] DW_TAG_unknown_4080 DW_CHILDREN_no
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# CHECK-EMPTY:
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# CHECK-NEXT: [1] DW_TAG_unknown_4000 DW_CHILDREN_no
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# CHECK-NEXT: DW_AT_unknown_2000 DW_FORM_unknown_ffff
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# CHECK-NEXT: DW_AT_unknown_3fff DW_FORM_unknown_7f
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# CHECK-NEXT: DW_AT_unknown_1fff DW_FORM_block2
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# CHECK-NEXT: DW_AT_unknown_4000 DW_FORM_block4
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# CHECK-EMPTY:
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# CHECK-NEXT: [2] DW_TAG_unknown_407f DW_CHILDREN_no
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# CHECK-EMPTY:
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# CHECK-NEXT: Abbrev table for offset: 0x00000038
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# CHECK-NEXT: [66] DW_TAG_entry_point DW_CHILDREN_no
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# CHECK-NEXT: DW_AT_elemental DW_FORM_flag_present
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## All values in this assembly are intended to be arbitrary, except where
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## specified.
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.section .debug_abbrev,"",@progbits
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.byte 0x42 ## Abbreviation Code
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## Known tag with children and known attributes and forms.
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.byte 0x11 ## DW_TAG_compile_unit
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.byte 0x01 ## DW_CHILDREN_yes
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.byte 0x03 ## DW_AT_name
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.byte 0x08 ## DW_FORM_string (valid form for DW_AT_name).
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.byte 0x10 ## DW_AT_stmt_list
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.byte 0x05 ## DW_FORM_data2 (invalid form for DW_AT_stmt_list).
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.byte 0, 0 ## End of attributes
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## Tag without children and reserved form/attribute values.
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.byte 0x80, 0x01 ## Multi-byte Abbreviation Code
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.byte 0xFF, 0xFF, 0x03 ## 0xFFFF == DW_TAG_hi_user
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.byte 0x00 ## DW_CHILDREN_no
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## Reserved attribute and form.
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.byte 0x05 ## Reserved DW_AT_*
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.byte 0x02 ## Reserved DW_FORM_*
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.byte 0, 0 ## End of attributes.
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## Tag with no attributes.
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.byte 0x42 ## Abbreviation Code (duplicate)
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.byte 0x80, 0x81, 0x01 ## 0x4080 == DW_TAG_lo_user
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.byte 0x00 ## DW_CHILDREN_no
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.byte 0, 0 ## End of attributes.
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## Tag with attributes/forms with unknown values/values in user-defined ranges.
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.byte 0x01 ## Abbreviation Code
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## FIXME: https://bugs.llvm.org/show_bug.cgi?id=44258 means that 0x80, 0x80, 0x04
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## results in a failure to parse correctly, whilst the following tag value is
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## interpreted incorrectly as 0x4000.
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.byte 0x80, 0x80, 0x05 ## 0x10001 == DW_TAG_hi_user + 2
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.byte 0x00 ## DW_CHILDREN_no
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.byte 0x80, 0x40 ## 0x2000 == DW_AT_lo_user
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.byte 0xFF, 0xFF, 0x03 ## 0xFFFF == Unknown multi-byte form.
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.byte 0xFF, 0x7F ## DW_AT_hi_user
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.byte 0x7F ## Unknown single-byte form.
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.byte 0xFF, 0x3F ## DW_AT_lo_user - 1
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.byte 0x03 ## DW_FORM_block2
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.byte 0x80, 0x80, 0x01 ## DW_AT_hi_user + 1
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.byte 0x04 ## DW_FORM_block4
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.byte 0, 0 ## End of attributes.
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## Tag with invalid children encoding.
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.byte 0x02 ## Abbreviation Code
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.byte 0xFF, 0x80, 0x01 ## 0x407F == DW_TAG_lo_user - 1
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.byte 0x02 ## Invalid children encoding (interpreted as DW_CHILDREN_no).
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.byte 0, 0 ## End of attributes.
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.byte 0 ## End of abbrevs.
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## Second .debug_abbrev set.
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.byte 0x42 ## Abbreviation Code (duplicate in different unit)
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.byte 0x03 ## DW_TAG_entry_point
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.byte 0x00 ## DW_CHILDREN_no
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.byte 0x66 ## DW_AT_elemental
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.byte 0x19 ## DW_FORM_flag_present
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.byte 0, 0 ## End of attributes.
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