# RUN: yaml2obj %s -o %t.exe
# RUN: llvm-readobj --unwind %t.exe | FileCheck %s

## T12: V3 with negative EpilogOffset (offset from fragment tail).
##
## .xdata hex breakdown:
## Byte 0: 0x03  (Version=3, Flags=0)
## Byte 1: 0x0B  (SizeOfProlog=11)
## Byte 2: 0x08  (PayloadWords=8 words -> 16 bytes payload)
## Byte 3: 0x23  (NumberOfOps=3, NumberOfEpilogs=1: (1<<5)|3)
## Payload (16 bytes):
##   +0: 07        Prolog IP offset[0]: +7
##   +1: 02        Prolog IP offset[1]: +2
##   +2: 00        Prolog IP offset[2]: +0
##   +3: 18        Epilog[0] FlagsAndNumOps: flags=0, nops=3 -> (3<<3)|0
##   +4: EC FF     Epilog[0] EpilogOffset: -20 (0xFFEC as signed int16)
##   +6: 00 00     Epilog[0] FirstOp: 0
##   +8: 06        Epilog[0] IpOffsetOfLastInstruction: 6
##   +9: 00        Epilog[0] IP offset[0]: +0
##   +10: 04       Epilog[0] IP offset[1]: +4
##   +11: 05       Epilog[0] IP offset[2]: +5
##   +12: 38       WOD pool[0]: WOD_ALLOC_SMALL Size=32
##   +13: 34       WOD pool[1]: WOD_PUSH RSI
##   +14: 3C       WOD pool[2]: WOD_PUSH RDI
##   +15: 00       Padding

# CHECK-LABEL:  UnwindInformation [
# CHECK-NEXT:     RuntimeFunction {
# CHECK:            UnwindInfo {
# CHECK-NEXT:         Version: 3
# CHECK-NEXT:         Flags [ (0x0)
# CHECK-NEXT:         ]
# CHECK-NEXT:         SizeOfProlog: 0xB
# CHECK-NEXT:         PayloadWords: 8
# CHECK-NEXT:         NumberOfOps: 3
# CHECK-NEXT:         NumberOfEpilogs: 1
# CHECK-NEXT:         Prolog [3 ops]:
# CHECK-NEXT:           [0] IP +0x0007: ALLOC_SMALL Size=0x20
# CHECK-NEXT:           [1] IP +0x0002: PUSH Reg=RSI
# CHECK-NEXT:           [2] IP +0x0000: PUSH Reg=RDI
# CHECK-NEXT:         Epilog [0] {
# CHECK-NEXT:           Flags [ (0x0)
# CHECK-NEXT:           ]
# CHECK-NEXT:           EpilogOffset: -0x14
# CHECK-NEXT:           NumberOfOps: 3
# CHECK-NEXT:           FirstOp: 0x0
# CHECK-NEXT:           IpOffsetOfLastInstruction: 0x6
# CHECK-NEXT:           [0] IP +0x0000: ALLOC_SMALL Size=0x20
# CHECK-NEXT:           [1] IP +0x0004: PUSH Reg=RSI
# CHECK-NEXT:           [2] IP +0x0005: PUSH Reg=RDI
# CHECK-NEXT:         }
# CHECK-NEXT:       }
# CHECK-NEXT:     }
# CHECK-NEXT:   ]

--- !COFF
OptionalHeader:
  AddressOfEntryPoint: 4096
  ImageBase:       0
  SectionAlignment: 4096
  FileAlignment:   512
  MajorOperatingSystemVersion: 6
  MinorOperatingSystemVersion: 0
  MajorImageVersion: 0
  MinorImageVersion: 0
  MajorSubsystemVersion: 6
  MinorSubsystemVersion: 0
  Subsystem:       IMAGE_SUBSYSTEM_WINDOWS_CUI
  DLLCharacteristics: [ IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA, IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE, IMAGE_DLL_CHARACTERISTICS_NX_COMPAT ]
  SizeOfStackReserve: 1048576
  SizeOfStackCommit: 4096
  SizeOfHeapReserve: 1048576
  SizeOfHeapCommit: 4096
  ExportTable:
    RelativeVirtualAddress: 0
    Size:            0
  ImportTable:
    RelativeVirtualAddress: 0
    Size:            0
  ResourceTable:
    RelativeVirtualAddress: 0
    Size:            0
  ExceptionTable:
    RelativeVirtualAddress: 12288
    Size:            12
  CertificateTable:
    RelativeVirtualAddress: 0
    Size:            0
  BaseRelocationTable:
    RelativeVirtualAddress: 0
    Size:            0
  Debug:
    RelativeVirtualAddress: 0
    Size:            0
  Architecture:
    RelativeVirtualAddress: 0
    Size:            0
  GlobalPtr:
    RelativeVirtualAddress: 0
    Size:            0
  TlsTable:
    RelativeVirtualAddress: 0
    Size:            0
  LoadConfigTable:
    RelativeVirtualAddress: 0
    Size:            0
  BoundImport:
    RelativeVirtualAddress: 0
    Size:            0
  IAT:
    RelativeVirtualAddress: 0
    Size:            0
  DelayImportDescriptor:
    RelativeVirtualAddress: 0
    Size:            0
  ClrRuntimeHeader:
    RelativeVirtualAddress: 0
    Size:            0
header:
  Machine:         IMAGE_FILE_MACHINE_AMD64
  Characteristics: [ IMAGE_FILE_EXECUTABLE_IMAGE, IMAGE_FILE_LARGE_ADDRESS_AWARE ]
sections:
  - Name:            .text
    Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
    VirtualAddress:  4096
    VirtualSize:     32
    SectionData:     '0000000000000000000000000000000000000000000000000000000000000000'
  - Name:            .xdata
    Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ ]
    VirtualAddress:  8192
    VirtualSize:     20
    SectionData:     '030B082307020018ECFF00000600040538343C00'
  - Name:            .pdata
    Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ ]
    VirtualAddress:  12288
    VirtualSize:     12
    SectionData:     '001000002010000000200000'
symbols:
  - Name:            .text
    Value:           0
    SectionNumber:   1
    SimpleType:      IMAGE_SYM_TYPE_NULL
    ComplexType:     IMAGE_SYM_DTYPE_NULL
    StorageClass:    IMAGE_SYM_CLASS_STATIC
  - Name:            .xdata
    Value:           0
    SectionNumber:   2
    SimpleType:      IMAGE_SYM_TYPE_NULL
    ComplexType:     IMAGE_SYM_DTYPE_NULL
    StorageClass:    IMAGE_SYM_CLASS_STATIC
  - Name:            .pdata
    Value:           0
    SectionNumber:   3
    SimpleType:      IMAGE_SYM_TYPE_NULL
    ComplexType:     IMAGE_SYM_DTYPE_NULL
    StorageClass:    IMAGE_SYM_CLASS_STATIC
  - Name:            func
    Value:           0
    SectionNumber:   1
    SimpleType:      IMAGE_SYM_TYPE_NULL
    ComplexType:     IMAGE_SYM_DTYPE_FUNCTION
    StorageClass:    IMAGE_SYM_CLASS_EXTERNAL
...