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[llvm-readobj][xcoff] implement parsing overflow section header.

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SUMMARY:
in the xcoff, if the number of relocation entries or line number entries is
overflow(large than or equal 65535) , there will be overflow section for it.
The interpret of overflow section is different with generic section header,
the patch implement parsing the overflow section.

Reviewers: hubert.reinterpretcast,sfertile,jasonliu
Subscribers: rupprecht, seiya

Differential Revision: https://reviews.llvm.org/D68575

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@374941 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Digger Lin
2019-10-15 19:28:11 +00:00
parent 62e7137cb9
commit 382c1a971c
3 changed files with 106 additions and 19 deletions
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test/tools/llvm-readobj/Inputs/xcoff-reloc-overflow.o
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test/tools/llvm-readobj/xcoff-overflow-section.test
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# RUN: llvm-readobj --sections %p/Inputs/xcoff-reloc-overflow.o | \
# RUN: FileCheck --check-prefix=SECOVERFLOW %s
# SECOVERFLOW: File: {{.*}}xcoff-reloc-overflow.o
# SECOVERFLOW-NEXT: Format: aixcoff-rs6000
# SECOVERFLOW-NEXT: Arch: powerpc
# SECOVERFLOW-NEXT: AddressSize: 32bit
# SECOVERFLOW-NEXT: Sections [
# SECOVERFLOW-NEXT: Section {
# SECOVERFLOW-NEXT: Index: 1
# SECOVERFLOW-NEXT: Name: .text
# SECOVERFLOW-NEXT: PhysicalAddress: 0x0
# SECOVERFLOW-NEXT: VirtualAddress: 0x0
# SECOVERFLOW-NEXT: Size: 0x38
# SECOVERFLOW-NEXT: RawDataOffset: 0x8C
# SECOVERFLOW-NEXT: RelocationPointer: 0x0
# SECOVERFLOW-NEXT: LineNumberPointer: 0x0
# SECOVERFLOW-NEXT: NumberOfRelocations: 0
# SECOVERFLOW-NEXT: NumberOfLineNumbers: 0
# SECOVERFLOW-NEXT: Type: STYP_TEXT (0x20)
# SECOVERFLOW-NEXT: }
# SECOVERFLOW-NEXT: Section {
# SECOVERFLOW-NEXT: Index: 2
# SECOVERFLOW-NEXT: Name: .data
# SECOVERFLOW-NEXT: PhysicalAddress: 0x38
# SECOVERFLOW-NEXT: VirtualAddress: 0x38
# SECOVERFLOW-NEXT: Size: 0x1C
# SECOVERFLOW-NEXT: RawDataOffset: 0xC4
# SECOVERFLOW-NEXT: RelocationPointer: 0xE0
# SECOVERFLOW-NEXT: LineNumberPointer: 0x0
# SECOVERFLOW-NEXT: NumberOfRelocations: 65535
# SECOVERFLOW-NEXT: NumberOfLineNumbers: 65535
# SECOVERFLOW-NEXT: Type: STYP_DATA (0x40)
# SECOVERFLOW-NEXT: }
# SECOVERFLOW-NEXT: Section {
# SECOVERFLOW-NEXT: Index: 3
# SECOVERFLOW-NEXT: Name: .ovrflo
# SECOVERFLOW-NEXT: NumberOfRelocations: 3
# SECOVERFLOW-NEXT: NumberOfLineNumbers: 3
# SECOVERFLOW-NEXT: Size: 0x0
# SECOVERFLOW-NEXT: RawDataOffset: 0x0
# SECOVERFLOW-NEXT: RelocationPointer: 0xE0
# SECOVERFLOW-NEXT: LineNumberPointer: 0x0
# SECOVERFLOW-NEXT: IndexOfSectionOverflowed: 2
# SECOVERFLOW-NEXT: IndexOfSectionOverflowed: 2
# SECOVERFLOW-NEXT: Type: STYP_OVRFLO (0x8000)
# SECOVERFLOW-NEXT: }
# SECOVERFLOW-NEXT: ]