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75b594b1e8
Summary: This adds a unique ID to the COFF section uniquing map, similar to the one we have for ELF. The unique id is not currently exposed via the assembler because we don't have a use case for it yet. Users generally create .pdata with the .seh_* family of directives, and the assembler internally needs to produce .pdata and .xdata sections corresponding to the code section. The association between .text sections and the assembler-created .xdata and .pdata sections is maintained as an ID field of MCSectionCOFF. The CFI-related sections are created with the given unique ID, so if more code is added to the same text section, we can find and reuse the CFI sections that were already created. Reviewers: majnemer, rafael Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D19376 llvm-svn: 268331
106 lines
2.6 KiB
ArmAsm
106 lines
2.6 KiB
ArmAsm
// This test ensures functions in custom sections get unwind info emitted in a
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// distinct .xdata section.
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// RUN: llvm-mc -filetype=obj -triple x86_64-pc-win32 %s | llvm-readobj -s -sd | FileCheck %s
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// CHECK: Name: .xdata
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// CHECK-NEXT: VirtualSize
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// CHECK-NEXT: VirtualAddress
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// CHECK-NEXT: RawDataSize: 8
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// CHECK-NEXT: PointerToRawData
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// CHECK-NEXT: PointerToRelocations
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// CHECK-NEXT: PointerToLineNumbers
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// CHECK-NEXT: RelocationCount: 0
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// CHECK-NEXT: LineNumberCount: 0
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// CHECK-NEXT: Characteristics [
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// CHECK-NEXT: IMAGE_SCN_ALIGN_4BYTES
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// CHECK-NEXT: IMAGE_SCN_CNT_INITIALIZED_DATA
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// CHECK-NEXT: IMAGE_SCN_MEM_READ
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// CHECK-NEXT: ]
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// CHECK-NEXT: SectionData (
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// CHECK-NEXT: 0000: 01050200 05500402
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// CHECK-NEXT: )
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// CHECK: Name: .xdata
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// CHECK-NEXT: VirtualSize
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// CHECK-NEXT: VirtualAddress
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// CHECK-NEXT: RawDataSize: 8
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// CHECK-NEXT: PointerToRawData
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// CHECK-NEXT: PointerToRelocations
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// CHECK-NEXT: PointerToLineNumbers
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// CHECK-NEXT: RelocationCount: 0
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// CHECK-NEXT: LineNumberCount: 0
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// CHECK-NEXT: Characteristics [
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// CHECK-NEXT: IMAGE_SCN_ALIGN_4BYTES
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// CHECK-NEXT: IMAGE_SCN_CNT_INITIALIZED_DATA
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// CHECK-NEXT: IMAGE_SCN_MEM_READ
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// CHECK-NEXT: ]
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// CHECK-NEXT: SectionData (
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// CHECK-NEXT: 0000: 01050200 05500402
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// CHECK-NEXT: )
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// CHECK: Name: .xdata
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// CHECK-NEXT: VirtualSize
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// CHECK-NEXT: VirtualAddress
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// CHECK-NEXT: RawDataSize: 8
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// CHECK-NEXT: PointerToRawData
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// CHECK-NEXT: PointerToRelocations
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// CHECK-NEXT: PointerToLineNumbers
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// CHECK-NEXT: RelocationCount: 0
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// CHECK-NEXT: LineNumberCount: 0
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// CHECK-NEXT: Characteristics [
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// CHECK-NEXT: IMAGE_SCN_ALIGN_4BYTES
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// CHECK-NEXT: IMAGE_SCN_CNT_INITIALIZED_DATA
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// CHECK-NEXT: IMAGE_SCN_MEM_READ
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// CHECK-NEXT: ]
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// CHECK-NEXT: SectionData (
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// CHECK-NEXT: 0000: 01050200 05500402
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// CHECK-NEXT: )
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.section .text$foo,"x"
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.globl foo
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.def foo; .scl 2; .type 32; .endef
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.seh_proc foo
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foo:
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subq $8, %rsp
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.seh_stackalloc 8
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pushq %rbp
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.seh_pushreg %rbp
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.seh_endprologue
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popq %rbp
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addq $8, %rsp
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ret
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.seh_endproc
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.section .mytext,"x"
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.globl bar
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.def bar; .scl 2; .type 32; .endef
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.seh_proc bar
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bar:
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subq $8, %rsp
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.seh_stackalloc 8
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pushq %rbp
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.seh_pushreg %rbp
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.seh_endprologue
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popq %rbp
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addq $8, %rsp
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ret
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.seh_endproc
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.section .text
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.globl baz
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.def baz; .scl 2; .type 32; .endef
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.seh_proc baz
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baz:
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subq $8, %rsp
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.seh_stackalloc 8
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pushq %rbp
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.seh_pushreg %rbp
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.seh_endprologue
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popq %rbp
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addq $8, %rsp
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ret
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.seh_endproc
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