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 | 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:      UnwindInformation [
  38 // CHECK-NEXT:   RuntimeFunction {
  39 // CHECK-NEXT:     StartAddress: [[CodeSect1:[^ ]+]] [[BeginDisp1:(\+0x[A-F0-9]+)?]]
  40 // CHECK-NEXT:     EndAddress: [[CodeSect1]] [[EndDisp1:(\+0x[A-F0-9]+)?]]
  41 // CHECK-NEXT:     UnwindInfoAddress:
  42 // CHECK-NEXT:     UnwindInfo {
  43 // CHECK-NEXT:       Version: 1
  44 // CHECK-NEXT:       Flags [
  45 // CHECK-NEXT:         ExceptionHandler
  46 // CHECK-NEXT:       ]
  47 // CHECK-NEXT:       PrologSize: 18
  48 // CHECK-NEXT:       FrameRegister: RBX
  49 // CHECK-NEXT:       FrameOffset: 0x0
  50 // CHECK-NEXT:       UnwindCodeCount: 8
  51 // CHECK-NEXT:       UnwindCodes [
  52 // CHECK-NEXT:         0x12: SET_FPREG reg=RBX, offset=0x0
  53 // CHECK-NEXT:         0x0F: PUSH_NONVOL reg=RBX
  54 // CHECK-NEXT:         0x0E: SAVE_XMM128 reg=XMM8, offset=0x0
  55 // CHECK-NEXT:         0x09: SAVE_NONVOL reg=RSI, offset=0x10
  56 // CHECK-NEXT:         0x04: ALLOC_SMALL size=24
  57 // CHECK-NEXT:         0x00: PUSH_MACHFRAME errcode=yes
  58 // CHECK-NEXT:       ]
  59 // CHECK-NEXT:       Handler: __C_specific_handler
  60 // CHECK-NEXT:     }
  61 // CHECK-NEXT:   }
  62 // CHECK-NEXT:   RuntimeFunction {
  63 // CHECK-NEXT:     StartAddress: [[CodeSect2:[^ ]+]] [[BeginDisp2:(\+0x[A-F0-9]+)?]]
  64 // CHECK-NEXT:     EndAddress: [[CodeSect2]] [[BeginDisp2:(\+0x[A-F0-9]+)?]]
  65 // CHECK-NEXT:     UnwindInfoAddress:
  66 // CHECK-NEXT:     UnwindInfo {
  67 // CHECK-NEXT:       Version: 1
  68 // CHECK-NEXT:       Flags [
  69 // CHECK-NEXT:         ChainInfo
  70 // CHECK-NEXT:       ]
  71 // CHECK-NEXT:       PrologSize: 0
  72 // CHECK-NEXT:       FrameRegister: -
  73 // CHECK-NEXT:       FrameOffset: -
  74 // CHECK-NEXT:       UnwindCodeCount: 0
  75 // CHECK-NEXT:       UnwindCodes [
  76 // CHECK-NEXT:       ]
  77 // CHECK-NEXT:       Chained {
  78 // CHECK-NEXT:         StartAddress: [[CodeSect1]] [[BeginDisp1]]
  79 // CHECK-NEXT:         EndAddress: [[CodeSect1]] [[EndDisp1]]
  80 // CHECK-NEXT:         UnwindInfoAddress:
  81 // CHECK-NEXT:       }
  82 // CHECK-NEXT:     }
  83 // CHECK-NEXT:   }
  84 // CHECK-NEXT:   RuntimeFunction {
  85 // CHECK-NEXT:     StartAddress: [[CodeSect3:[^ ]+]] [[BeginDisp3:(\+0x[A-F0-9]+)?]]
  86 // CHECK-NEXT:     EndAddress: [[CodeSect3]] [[BeginDisp3:(\+0x[A-F0-9]+)?]]
  87 // CHECK-NEXT:     UnwindInfoAddress:
  88 // CHECK-NEXT:     UnwindInfo {
  89 // CHECK-NEXT:       Version: 1
  90 // CHECK-NEXT:       Flags [
  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:     }
  99 // CHECK-NEXT:   }
 100 // CHECK-NEXT: ]
 101
 102     .text
 103     .globl func
 104     .def func; .scl 2; .type 32; .endef
 105     .seh_proc func
 106 func:
 107     .seh_pushframe @code
 108     subq $24, %rsp
 109     .seh_stackalloc 24
 110     movq %rsi, 16(%rsp)
 111     .seh_savereg %rsi, 16
 112     movups %xmm8, (%rsp)
 113     .seh_savexmm %xmm8, 0
 114     pushq %rbx
 115     .seh_pushreg 3
 116     mov %rsp, %rbx
 117     .seh_setframe 3, 0
 118     .seh_endprologue
 119     .seh_handler __C_specific_handler, @except
 120     .seh_handlerdata
 121     .long 0
 122     .text
 123     .seh_startchained
 124     .seh_endprologue
 125     .seh_endchained
 126     lea (%rbx), %rsp
 127     pop %rbx
 128     addq $24, %rsp
 129     ret
 130     .seh_endproc
 131
 132 // Test emission of small functions.
 133     .globl smallFunc
 134     .def smallFunc; .scl 2; .type 32; .endef
 135     .seh_proc smallFunc
 136 smallFunc:
 137     ret
 138     .seh_endproc