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a51acc7631
Prevent the early elimination of sections in the object writer. There may be references to the section itself by other symbols, which may potentially not be possible to resolve. ML (Visual Studio's Macro Assembler) also seems to retain empty sections. The elimination of symbols and sections which are unused should really occur at the link phase. This will not cause any change in the resulting binary, simply in the generated object files. The adjustments to the other unit tests account for the fluctuating section index caused by the appearance of sections which were previously discarded. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210373 91177308-0d34-0410-b5e6-96231b3b80d8
160 lines
5.2 KiB
ArmAsm
160 lines
5.2 KiB
ArmAsm
// This test checks that the SEH directives emit the correct unwind data.
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// RUN: llvm-mc -triple x86_64-pc-win32 -filetype=obj %s | llvm-readobj -s -u -r | FileCheck %s
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// CHECK: Sections [
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// CHECK: Section {
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// CHECK: Name: .text
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// CHECK: RelocationCount: 0
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// CHECK: Characteristics [
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// CHECK-NEXT: ALIGN_4BYTES
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// CHECK-NEXT: CNT_CODE
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// CHECK-NEXT: MEM_EXECUTE
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// CHECK-NEXT: MEM_READ
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// CHECK-NEXT: ]
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// CHECK-NEXT: }
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// CHECK: Section {
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// CHECK: Name: .xdata
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// CHECK: RawDataSize: 52
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// CHECK: RelocationCount: 4
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// CHECK: Characteristics [
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// CHECK-NEXT: ALIGN_4BYTES
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// CHECK-NEXT: CNT_INITIALIZED_DATA
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// CHECK-NEXT: MEM_READ
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// CHECK-NEXT: ]
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// CHECK-NEXT: }
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// CHECK: Section {
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// CHECK: Name: .pdata
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// CHECK: RelocationCount: 9
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// CHECK: Characteristics [
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// CHECK-NEXT: ALIGN_4BYTES
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// CHECK-NEXT: CNT_INITIALIZED_DATA
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// CHECK-NEXT: MEM_READ
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// CHECK-NEXT: ]
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// CHECK-NEXT: }
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// CHECK-NEXT: ]
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// CHECK-NEXT: Relocations [
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// CHECK-NEXT: Section (4) .xdata {
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// CHECK-NEXT: 0x14 IMAGE_REL_AMD64_ADDR32NB __C_specific_handler
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// CHECK-NEXT: 0x20 IMAGE_REL_AMD64_ADDR32NB func
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// CHECK-NEXT: 0x24 IMAGE_REL_AMD64_ADDR32NB func
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// CHECK-NEXT: 0x28 IMAGE_REL_AMD64_ADDR32NB .xdata
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// CHECK-NEXT: }
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// CHECK-NEXT: Section (5) .pdata {
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// CHECK-NEXT: 0x0 IMAGE_REL_AMD64_ADDR32NB func
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// CHECK-NEXT: 0x4 IMAGE_REL_AMD64_ADDR32NB func
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// CHECK-NEXT: 0x8 IMAGE_REL_AMD64_ADDR32NB .xdata
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// CHECK-NEXT: 0xC IMAGE_REL_AMD64_ADDR32NB func
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// CHECK-NEXT: 0x10 IMAGE_REL_AMD64_ADDR32NB func
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// CHECK-NEXT: 0x14 IMAGE_REL_AMD64_ADDR32NB .xdata
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// CHECK-NEXT: 0x18 IMAGE_REL_AMD64_ADDR32NB smallFunc
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// CHECK-NEXT: 0x1C IMAGE_REL_AMD64_ADDR32NB smallFunc
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// CHECK-NEXT: 0x20 IMAGE_REL_AMD64_ADDR32NB .xdata
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// CHECK-NEXT: }
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// CHECK-NEXT: ]
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// CHECK: UnwindInformation [
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// CHECK-NEXT: RuntimeFunction {
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// CHECK-NEXT: StartAddress: [[CodeSect1:[^ ]+]] [[BeginDisp1:(\+0x[A-F0-9]+)?]]
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// CHECK-NEXT: EndAddress: [[CodeSect1]] [[EndDisp1:(\+0x[A-F0-9]+)?]]
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// CHECK-NEXT: UnwindInfoAddress:
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// CHECK-NEXT: UnwindInfo {
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// CHECK-NEXT: Version: 1
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// CHECK-NEXT: Flags [
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// CHECK-NEXT: ExceptionHandler
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// CHECK-NEXT: ]
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// CHECK-NEXT: PrologSize: 18
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// CHECK-NEXT: FrameRegister: RBX
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// CHECK-NEXT: FrameOffset: 0x0
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// CHECK-NEXT: UnwindCodeCount: 8
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// CHECK-NEXT: UnwindCodes [
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// CHECK-NEXT: 0x12: SET_FPREG reg=RBX, offset=0x0
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// CHECK-NEXT: 0x0F: PUSH_NONVOL reg=RBX
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// CHECK-NEXT: 0x0E: SAVE_XMM128 reg=XMM8, offset=0x0
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// CHECK-NEXT: 0x09: SAVE_NONVOL reg=RSI, offset=0x10
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// CHECK-NEXT: 0x04: ALLOC_SMALL size=24
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// CHECK-NEXT: 0x00: PUSH_MACHFRAME errcode=yes
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// CHECK-NEXT: ]
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// CHECK-NEXT: Handler: __C_specific_handler
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// CHECK-NEXT: }
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// CHECK-NEXT: }
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// CHECK-NEXT: RuntimeFunction {
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// CHECK-NEXT: StartAddress: [[CodeSect2:[^ ]+]] [[BeginDisp2:(\+0x[A-F0-9]+)?]]
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// CHECK-NEXT: EndAddress: [[CodeSect2]] [[BeginDisp2:(\+0x[A-F0-9]+)?]]
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// CHECK-NEXT: UnwindInfoAddress:
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// CHECK-NEXT: UnwindInfo {
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// CHECK-NEXT: Version: 1
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// CHECK-NEXT: Flags [
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// CHECK-NEXT: ChainInfo
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// CHECK-NEXT: ]
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// CHECK-NEXT: PrologSize: 0
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// CHECK-NEXT: FrameRegister: -
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// CHECK-NEXT: FrameOffset: -
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// CHECK-NEXT: UnwindCodeCount: 0
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// CHECK-NEXT: UnwindCodes [
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// CHECK-NEXT: ]
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// CHECK-NEXT: Chained {
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// CHECK-NEXT: StartAddress: [[CodeSect1]] [[BeginDisp1]]
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// CHECK-NEXT: EndAddress: [[CodeSect1]] [[EndDisp1]]
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// CHECK-NEXT: UnwindInfoAddress:
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// CHECK-NEXT: }
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// CHECK-NEXT: }
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// CHECK-NEXT: }
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// CHECK-NEXT: RuntimeFunction {
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// CHECK-NEXT: StartAddress: [[CodeSect3:[^ ]+]] [[BeginDisp3:(\+0x[A-F0-9]+)?]]
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// CHECK-NEXT: EndAddress: [[CodeSect3]] [[BeginDisp3:(\+0x[A-F0-9]+)?]]
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// CHECK-NEXT: UnwindInfoAddress:
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// CHECK-NEXT: UnwindInfo {
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// CHECK-NEXT: Version: 1
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// CHECK-NEXT: Flags [
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// CHECK-NEXT: ]
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// CHECK-NEXT: PrologSize: 0
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// CHECK-NEXT: FrameRegister: -
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// CHECK-NEXT: FrameOffset: -
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// CHECK-NEXT: UnwindCodeCount: 0
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// CHECK-NEXT: UnwindCodes [
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// CHECK-NEXT: ]
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// CHECK-NEXT: }
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// CHECK-NEXT: }
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// CHECK-NEXT: ]
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.text
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.globl func
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.def func; .scl 2; .type 32; .endef
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.seh_proc func
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func:
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.seh_pushframe @code
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subq $24, %rsp
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.seh_stackalloc 24
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movq %rsi, 16(%rsp)
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.seh_savereg %rsi, 16
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movups %xmm8, (%rsp)
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.seh_savexmm %xmm8, 0
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pushq %rbx
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.seh_pushreg 3
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mov %rsp, %rbx
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.seh_setframe 3, 0
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.seh_endprologue
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.seh_handler __C_specific_handler, @except
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.seh_handlerdata
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.long 0
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.text
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.seh_startchained
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.seh_endprologue
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.seh_endchained
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lea (%rbx), %rsp
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pop %rbx
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addq $24, %rsp
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ret
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.seh_endproc
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// Test emission of small functions.
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.globl smallFunc
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.def smallFunc; .scl 2; .type 32; .endef
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.seh_proc smallFunc
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smallFunc:
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ret
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.seh_endproc
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