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f900b58379
It's not possible to do this in complete generality - a CU using a sec_offset DW_AT_ranges has no way of knowing where its rnglists contribution starts, so should not attempt to parse any full rnglist table/header to do so. And even using FORM_rnglistx there's no need to parse the header - the offset can be computed using the CU's DWARF format (32 or 64) to compute offset entry sizes, and then the list parsed at that offset without ever trying to find a rnglist contribution header immediately prior to the rnglists_base.
250 lines
11 KiB
ArmAsm
250 lines
11 KiB
ArmAsm
# RUN: llvm-mc -triple x86_64-unknown-linux %s -filetype=obj -o %t.o
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# RUN: not llvm-dwarfdump -v -debug-info %t.o 2> %t.err | FileCheck %s
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# RUN: FileCheck %s --input-file %t.err --check-prefix=ERR --implicit-check-not=error
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# RUN: not llvm-dwarfdump -lookup 10 %t.o 2> %t2.err
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# RUN: FileCheck %s --input-file %t2.err --check-prefix=ERR --implicit-check-not=error
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# RUN: llvm-dwarfdump -debug-rnglists %t.o | \
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# RUN: FileCheck %s --check-prefix=RNGLISTS
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# Test object to verify dwarfdump handles v5 range lists in 64-bit DWARF format.
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# This is similar to 'dwarfdump-rnglists.s', which uses 32-bit DWARF format.
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# We use very simplified compile unit dies.
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# There are 2 full CUs with DW_AT_rnglists_base, one with a DW_AT_ranges
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# attribute using DW_FORM_sec_offset, the other with DW_AT_ranges using
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# DW_FORM_rnglistx.
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.section .debug_abbrev,"",@progbits
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.byte 0x01 # Abbrev code
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.byte 0x11 # DW_TAG_compile_unit
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.byte 0x00 # DW_CHILDREN_no
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.byte 0x74 # DW_AT_rnglists_base
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.byte 0x17 # DW_FORM_sec_offset
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.byte 0x55 # DW_AT_ranges
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.byte 0x17 # DW_FORM_sec_offset
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.byte 0x00 # EOM(1)
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.byte 0x00 # EOM(2)
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.byte 0x02 # Abbrev code
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.byte 0x11 # DW_TAG_compile_unit
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.byte 0x00 # DW_CHILDREN_no
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.byte 0x74 # DW_AT_rnglists_base
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.byte 0x17 # DW_FORM_sec_offset
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.byte 0x55 # DW_AT_ranges
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.byte 0x23 # DW_FORM_rnglistx
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.byte 0x00 # EOM(1)
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.byte 0x00 # EOM(2)
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.byte 0x00 # EOM(3)
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# The split CU uses DW_FORM_rnglistx (the only correct option).
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# There is no DW_AT_rnglists_base in split units.
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.section .debug_abbrev.dwo,"e",@progbits
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.byte 0x01 # Abbrev code
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.byte 0x11 # DW_TAG_compile_unit
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.byte 0x00 # DW_CHILDREN_no
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.byte 0x55 # DW_AT_ranges
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.byte 0x23 # DW_FORM_rnglistx
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.byte 0x00 # EOM(1)
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.byte 0x00 # EOM(2)
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.byte 0x00 # EOM(3)
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.section .debug_info,"",@progbits
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.long 0xffffffff # DWARF64 mark
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.quad CU1_5_64_end - CU1_5_64_version # Length of Unit
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CU1_5_64_version:
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.short 5 # DWARF version number
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.byte 1 # DWARF Unit Type
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.byte 4 # Address Size (in bytes)
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.quad .debug_abbrev # Offset Into Abbrev. Section
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# The compile-unit DIE, which has DW_AT_rnglists_base and DW_AT_ranges.
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.byte 1 # Abbreviation code
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.quad Rnglist_Table0_base # DW_AT_rnglists_base
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.quad Rnglist_Table0_Rnglist0 # DW_AT_ranges
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CU1_5_64_end:
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.long 0xffffffff # DWARF64 mark
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.quad CU2_5_64_end - CU2_5_64_version # Length of Unit
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CU2_5_64_version:
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.short 5 # DWARF version number
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.byte 1 # DWARF Unit Type
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.byte 4 # Address Size (in bytes)
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.quad .debug_abbrev # Offset Into Abbrev. Section
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# The compile-unit DIE, which has DW_AT_rnglists_base and DW_AT_ranges.
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.byte 2 # Abbreviation code
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.quad Rnglist_Table0_base # DW_AT_rnglists_base
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.uleb128 1 # DW_AT_ranges
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CU2_5_64_end:
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# A CU with an invalid DW_AT_rnglists_base attribute
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.long 0xffffffff # DWARF64 mark
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.quad CU3_5_64_end - CU3_5_64_version # Length of Unit
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CU3_5_64_version:
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.short 5 # DWARF version number
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.byte 1 # DWARF Unit Type
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.byte 4 # Address Size (in bytes)
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.quad .debug_abbrev # Offset Into Abbrev. Section
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# The compile-unit DIE, which has DW_AT_rnglists_base and DW_AT_ranges.
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.byte 2 # Abbreviation code
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.quad 0x8 # DW_AT_rnglists_base
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.uleb128 0 # DW_AT_ranges
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CU3_5_64_end:
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# A CU DIE with an incorrect DW_AT_ranges attribute
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.long 0xffffffff # DWARF64 mark
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.quad CU4_5_64_end - CU4_5_64_version # Length of Unit
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CU4_5_64_version:
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.short 5 # DWARF version number
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.byte 1 # DWARF Unit Type
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.byte 4 # Address Size (in bytes)
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.quad .debug_abbrev # Offset Into Abbrev. Section
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# The compile-unit DIE, which has DW_AT_rnglists_base and DW_AT_ranges.
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.byte 1 # Abbreviation code
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.quad Rnglist_Table0_base # DW_AT_rnglists_base
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.quad 4000 # DW_AT_ranges
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CU4_5_64_end:
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.section .debug_info.dwo,"e",@progbits
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# DWARF v5 split CU header.
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.long 0xffffffff # DWARF64 mark
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.quad CU_split_5_64_end-CU_split_5_64_version # Length of Unit
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CU_split_5_64_version:
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.short 5 # DWARF version number
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.byte 5 # DWARF Unit Type
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.byte 4 # Address Size (in bytes)
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.quad 0 # Offset Into Abbrev Section
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.quad 0xdeadbeefbaadf00d # DWO id
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# The compile-unit DIE, which has DW_AT_rnglists_base and DW_AT_ranges.
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.byte 1 # Abbreviation code
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.uleb128 1 # DW_AT_ranges
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CU_split_5_64_end:
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.section .debug_rnglists,"",@progbits
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# A rnglist table with 2 range lists. The first one uses DW_RLE_start_end
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# and DW_RLE_start_length. The second one uses DW_RLE_base_address and
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# DW_RLE_offset_pair. The range lists have entries in the offset table.
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.long 0xffffffff # DWARF64 mark
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.quad Rnglist_Table0_end - Rnglist_Table0 # table length
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Rnglist_Table0:
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.short 5 # version
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.byte 4 # address size
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.byte 0 # segment selector size
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.long 2 # offset entry count
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Rnglist_Table0_base:
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# 2 offset entries which can be used by DW_FORM_rnglistx.
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.quad Rnglist_Table0_Rnglist0 - Rnglist_Table0_base
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.quad Rnglist_Table0_Rnglist1 - Rnglist_Table0_base
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Rnglist_Table0_Rnglist0:
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.byte 6 # DW_RLE_start_end
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.long Range0_start
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.long Range0_end
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.byte 7 # DW_RLE_start_length
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.long Range1_start
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.uleb128 Range1_end - Range1_start
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.byte 0 # DW_RLE_end_of_list
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Rnglist_Table0_Rnglist1:
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.byte 5 # DW_RLE_base_address
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.long Range0_start
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.byte 4 # DW_RLE_offset_pair
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.uleb128 Range1_start - Range0_start
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.uleb128 Range1_end - Range0_start
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.byte 0 # DW_RLE_end_of_list
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Rnglist_Table0_end:
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# A rnglist table for the split unit with an empty rangelist and one that
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# uses DW_RLE_base_address and DW_RLE_offset_pair. The ranges have entries
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# in the offset table. We use the empty range list so we can test
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# DW_FORM_rnglistx with an index other than 0.
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.section .debug_rnglists.dwo,"e",@progbits
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.long 0xffffffff # DWARF64 mark
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.quad Rnglist_Table0_dwo_end - Rnglist_Table0_dwo # table length
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Rnglist_Table0_dwo:
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.short 5 # version
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.byte 4 # address size
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.byte 0 # segment selector size
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.long 2 # offset entry count
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Rnglist_Table0_base_dwo:
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# 2 offset entries which can be used by DW_FORM_rnglistx.
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.quad Rnglist_Table0_Rnglist0_dwo - Rnglist_Table0_base_dwo
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.quad Rnglist_Table0_Rnglist1_dwo - Rnglist_Table0_base_dwo
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Rnglist_Table0_Rnglist0_dwo:
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.byte 0 # DW_RLE_start_end
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Rnglist_Table0_Rnglist1_dwo:
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.byte 5 # DW_RLE_base_address
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.long Range0_start - .text
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.byte 4 # DW_RLE_offset_pair
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.uleb128 Range1_start - Range0_start
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.uleb128 Range1_end - Range0_start
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.byte 0 # DW_RLE_end_of_list
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Rnglist_Table0_dwo_end:
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.text
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.space 20
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Range0_start: # Range0: 0x14 - 0x1c
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.space 10
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Range0_end:
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.space 12
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Range1_start: # Range1: 0x2a - 0x34
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.space 10
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Range1_end:
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# CHECK: .debug_info contents:
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# CHECK: Compile Unit:
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# CHECK-NOT: Compile Unit:
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# CHECK: DW_TAG_compile_unit
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# CHECK-NEXT: DW_AT_rnglists_base [DW_FORM_sec_offset] (0x0000000000000014)
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# CHECK-NEXT: DW_AT_ranges [DW_FORM_sec_offset] (0x0000000000000024
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# CHECK-NEXT: [0x00000014, 0x0000001e) ".text"
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# CHECK-NEXT: [0x0000002a, 0x00000034) ".text")
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# CHECK: Compile Unit:
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# CHECK-NOT: Compile Unit:
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# CHECK: DW_TAG_compile_unit
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# CHECK-NEXT: DW_AT_rnglists_base [DW_FORM_sec_offset] (0x0000000000000014)
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# CHECK-NEXT: DW_AT_ranges [DW_FORM_rnglistx] (indexed (0x1) rangelist = 0x00000034
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# CHECK-NEXT: [0x0000002a, 0x00000034) ".text")
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# CHECK: .debug_info.dwo contents:
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# CHECK: Compile Unit:
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# CHECK-NOT: contents:
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# CHECK: DW_TAG_compile_unit
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# CHECK-NEXT: DW_AT_ranges [DW_FORM_rnglistx] (indexed (0x1) rangelist = 0x00000025
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# CHECK-NEXT: [0x0000002a, 0x00000034))
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#ERR: error: decoding address ranges: invalid range list offset 0x4000500000008
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#ERR: error: decoding address ranges: invalid range list offset 0xfa0
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# RNGLISTS: .debug_rnglists contents:
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# RNGLISTS: range list header:
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# RNGLISTS-SAME: length = 0x0000000000000031,
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# RNGLISTS-SAME: format = DWARF64,
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# RNGLISTS-SAME: version = 0x0005,
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# RNGLISTS-SAME: addr_size = 0x04,
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# RNGLISTS-SAME: seg_size = 0x00,
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# RNGLISTS-SAME: offset_entry_count = 0x00000002
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# RNGLISTS-NEXT: offsets: [
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# RNGLISTS-NEXT: 0x0000000000000010
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# RNGLISTS-NEXT: 0x0000000000000020
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# RNGLISTS-NEXT: ]
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# RNGLISTS-NEXT: ranges:
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# RNGLISTS-NEXT: [0x00000014, 0x0000001e)
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# RNGLISTS-NEXT: [0x0000002a, 0x00000034)
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# RNGLISTS-NEXT: <End of list>
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# RNGLISTS-NEXT: [0x0000002a, 0x00000034)
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# RNGLISTS-NEXT: <End of list>
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# RNGLISTS: .debug_rnglists.dwo contents:
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# RNGLISTS: range list header:
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# RNGLISTS-SAME: length = 0x0000000000000022,
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# RNGLISTS-SAME: format = DWARF64,
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# RNGLISTS-SAME: version = 0x0005,
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# RNGLISTS-SAME: addr_size = 0x04,
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# RNGLISTS-SAME: seg_size = 0x00,
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# RNGLISTS-SAME: offset_entry_count = 0x00000002
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# RNGLISTS-NEXT: offsets: [
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# RNGLISTS-NEXT: 0x0000000000000010
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# RNGLISTS-NEXT: 0x0000000000000011
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# RNGLISTS-NEXT: ]
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# RNGLISTS-NEXT: ranges:
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# RNGLISTS-NEXT: <End of list>
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# RNGLISTS-NEXT: [0x0000002a, 0x00000034)
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# RNGLISTS-NEXT: <End of list>
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