test/MC/COFF/seh.s

   1 // This test checks that the SEH directives emit the correct unwind data.
   2
   3 // RUN: llvm-mc -triple x86_64-pc-win32 -filetype=obj %s | llvm-readobj -s -u -r | FileCheck %s
   4
   5 // CHECK:      Sections [
   6 // CHECK:        Section {
   7 // CHECK:          Name: .text
   8 // CHECK:          RelocationCount: 0
   9 // CHECK:          Characteristics [
  10 // CHECK-NEXT:       ALIGN_4BYTES
  11 // CHECK-NEXT:       CNT_CODE
  12 // CHECK-NEXT:       MEM_EXECUTE
  13 // CHECK-NEXT:       MEM_READ
  14 // CHECK-NEXT:     ]
  15 // CHECK-NEXT:   }
  16 // CHECK:        Section {
  17 // CHECK:          Name: .xdata
  18 // CHECK:          RawDataSize: 52
  19 // CHECK:          RelocationCount: 4
  20 // CHECK:          Characteristics [
  21 // CHECK-NEXT:       ALIGN_4BYTES
  22 // CHECK-NEXT:       CNT_INITIALIZED_DATA
  23 // CHECK-NEXT:       MEM_READ
  24 // CHECK-NEXT:     ]
  25 // CHECK-NEXT:   }
  26 // CHECK:        Section {
  27 // CHECK:          Name: .pdata
  28 // CHECK:          RelocationCount: 9
  29 // CHECK:          Characteristics [
  30 // CHECK-NEXT:       ALIGN_4BYTES
  31 // CHECK-NEXT:       CNT_INITIALIZED_DATA
  32 // CHECK-NEXT:       MEM_READ
  33 // CHECK-NEXT:     ]
  34 // CHECK-NEXT:   }
  35 // CHECK-NEXT: ]
  36
  37 // CHECK-NEXT: Relocations [
  38 // CHECK-NEXT:   Section (4) .xdata {
  39 // CHECK-NEXT:     0x14 IMAGE_REL_AMD64_ADDR32NB __C_specific_handler
  40 // CHECK-NEXT:     0x20 IMAGE_REL_AMD64_ADDR32NB func
  41 // CHECK-NEXT:     0x24 IMAGE_REL_AMD64_ADDR32NB func
  42 // CHECK-NEXT:     0x28 IMAGE_REL_AMD64_ADDR32NB .xdata
  43 // CHECK-NEXT:   }
  44 // CHECK-NEXT:   Section (5) .pdata {
  45 // CHECK-NEXT:     0x0 IMAGE_REL_AMD64_ADDR32NB func
  46 // CHECK-NEXT:     0x4 IMAGE_REL_AMD64_ADDR32NB func
  47 // CHECK-NEXT:     0x8 IMAGE_REL_AMD64_ADDR32NB .xdata
  48 // CHECK-NEXT:     0xC IMAGE_REL_AMD64_ADDR32NB func
  49 // CHECK-NEXT:     0x10 IMAGE_REL_AMD64_ADDR32NB func
  50 // CHECK-NEXT:     0x14 IMAGE_REL_AMD64_ADDR32NB .xdata
  51 // CHECK-NEXT:     0x18 IMAGE_REL_AMD64_ADDR32NB smallFunc
  52 // CHECK-NEXT:     0x1C IMAGE_REL_AMD64_ADDR32NB smallFunc
  53 // CHECK-NEXT:     0x20 IMAGE_REL_AMD64_ADDR32NB .xdata
  54 // CHECK-NEXT:   }
  55 // CHECK-NEXT: ]
  56
  57
  58 // CHECK:      UnwindInformation [
  59 // CHECK-NEXT:   RuntimeFunction {
  60 // CHECK-NEXT:     StartAddress: [[CodeSect1:[^ ]+]] [[BeginDisp1:(\+0x[A-F0-9]+)?]]
  61 // CHECK-NEXT:     EndAddress: [[CodeSect1]] [[EndDisp1:(\+0x[A-F0-9]+)?]]
  62 // CHECK-NEXT:     UnwindInfoAddress:
  63 // CHECK-NEXT:     UnwindInfo {
  64 // CHECK-NEXT:       Version: 1
  65 // CHECK-NEXT:       Flags [
  66 // CHECK-NEXT:         ExceptionHandler
  67 // CHECK-NEXT:       ]
  68 // CHECK-NEXT:       PrologSize: 18
  69 // CHECK-NEXT:       FrameRegister: RBX
  70 // CHECK-NEXT:       FrameOffset: 0x0
  71 // CHECK-NEXT:       UnwindCodeCount: 8
  72 // CHECK-NEXT:       UnwindCodes [
  73 // CHECK-NEXT:         0x12: SET_FPREG reg=RBX, offset=0x0
  74 // CHECK-NEXT:         0x0F: PUSH_NONVOL reg=RBX
  75 // CHECK-NEXT:         0x0E: SAVE_XMM128 reg=XMM8, offset=0x0
  76 // CHECK-NEXT:         0x09: SAVE_NONVOL reg=RSI, offset=0x10
  77 // CHECK-NEXT:         0x04: ALLOC_SMALL size=24
  78 // CHECK-NEXT:         0x00: PUSH_MACHFRAME errcode=yes
  79 // CHECK-NEXT:       ]
  80 // CHECK-NEXT:       Handler: __C_specific_handler
  81 // CHECK-NEXT:     }
  82 // CHECK-NEXT:   }
  83 // CHECK-NEXT:   RuntimeFunction {
  84 // CHECK-NEXT:     StartAddress: [[CodeSect2:[^ ]+]] [[BeginDisp2:(\+0x[A-F0-9]+)?]]
  85 // CHECK-NEXT:     EndAddress: [[CodeSect2]] [[BeginDisp2:(\+0x[A-F0-9]+)?]]
  86 // CHECK-NEXT:     UnwindInfoAddress:
  87 // CHECK-NEXT:     UnwindInfo {
  88 // CHECK-NEXT:       Version: 1
  89 // CHECK-NEXT:       Flags [
  90 // CHECK-NEXT:         ChainInfo
  91 // CHECK-NEXT:       ]
  92 // CHECK-NEXT:       PrologSize: 0
  93 // CHECK-NEXT:       FrameRegister: -
  94 // CHECK-NEXT:       FrameOffset: -
  95 // CHECK-NEXT:       UnwindCodeCount: 0
  96 // CHECK-NEXT:       UnwindCodes [
  97 // CHECK-NEXT:       ]
  98 // CHECK-NEXT:       Chained {
  99 // CHECK-NEXT:         StartAddress: [[CodeSect1]] [[BeginDisp1]]
 100 // CHECK-NEXT:         EndAddress: [[CodeSect1]] [[EndDisp1]]
 101 // CHECK-NEXT:         UnwindInfoAddress:
 102 // CHECK-NEXT:       }
 103 // CHECK-NEXT:     }
 104 // CHECK-NEXT:   }
 105 // CHECK-NEXT:   RuntimeFunction {
 106 // CHECK-NEXT:     StartAddress: [[CodeSect3:[^ ]+]] [[BeginDisp3:(\+0x[A-F0-9]+)?]]
 107 // CHECK-NEXT:     EndAddress: [[CodeSect3]] [[BeginDisp3:(\+0x[A-F0-9]+)?]]
 108 // CHECK-NEXT:     UnwindInfoAddress:
 109 // CHECK-NEXT:     UnwindInfo {
 110 // CHECK-NEXT:       Version: 1
 111 // CHECK-NEXT:       Flags [
 112 // CHECK-NEXT:       ]
 113 // CHECK-NEXT:       PrologSize: 0
 114 // CHECK-NEXT:       FrameRegister: -
 115 // CHECK-NEXT:       FrameOffset: -
 116 // CHECK-NEXT:       UnwindCodeCount: 0
 117 // CHECK-NEXT:       UnwindCodes [
 118 // CHECK-NEXT:       ]
 119 // CHECK-NEXT:     }
 120 // CHECK-NEXT:   }
 121 // CHECK-NEXT: ]
 122
 123     .text
 124     .globl func
 125     .def func; .scl 2; .type 32; .endef
 126     .seh_proc func
 127 func:
 128     .seh_pushframe @code
 129     subq $24, %rsp
 130     .seh_stackalloc 24
 131     movq %rsi, 16(%rsp)
 132     .seh_savereg %rsi, 16
 133     movups %xmm8, (%rsp)
 134     .seh_savexmm %xmm8, 0
 135     pushq %rbx
 136     .seh_pushreg 3
 137     mov %rsp, %rbx
 138     .seh_setframe 3, 0
 139     .seh_endprologue
 140     .seh_handler __C_specific_handler, @except
 141     .seh_handlerdata
 142     .long 0
 143     .text
 144     .seh_startchained
 145     .seh_endprologue
 146     .seh_endchained
 147     lea (%rbx), %rsp
 148     pop %rbx
 149     addq $24, %rsp
 150     ret
 151     .seh_endproc
 152
 153 // Test emission of small functions.
 154     .globl smallFunc
 155     .def smallFunc; .scl 2; .type 32; .endef
 156     .seh_proc smallFunc
 157 smallFunc:
 158     ret
 159     .seh_endproc