llvm/test/MC/COFF/seh-align1.s

   1 // This test checks the alignment and padding of the unwind info.
   2
   3 // RUN: llvm-mc -triple x86_64-pc-win32 -filetype=obj %s | llvm-readobj -S --sd --sr -u - | FileCheck %s
   4
   5 // CHECK:      Sections [
   6 // CHECK:        Section {
   7 // CHECK:          Name: .xdata
   8 // CHECK:          RawDataSize: 8
   9 // CHECK:          RelocationCount: 0
  10 // CHECK:          Characteristics [
  11 // CHECK-NEXT:       ALIGN_4BYTES
  12 // CHECK-NEXT:       CNT_INITIALIZED_DATA
  13 // CHECK-NEXT:       MEM_READ
  14 // CHECK-NEXT:     ]
  15 // CHECK:          Relocations [
  16 // CHECK-NEXT:     ]
  17 // CHECK:          SectionData (
  18 // CHECK-NEXT:       0000: 01000000 00000000
  19 // CHECK-NEXT:     )
  20 // CHECK-NEXT:   }
  21 // CHECK:        Section {
  22 // CHECK:          Name: .pdata
  23 // CHECK:          RawDataSize: 12
  24 // CHECK:          RelocationCount: 3
  25 // CHECK:          Characteristics [
  26 // CHECK-NEXT:       IMAGE_SCN_ALIGN_4BYTES
  27 // CHECK-NEXT:       IMAGE_SCN_CNT_INITIALIZED_DATA
  28 // CHECK-NEXT:       IMAGE_SCN_MEM_READ
  29 // CHECK-NEXT:     ]
  30 // CHECK:          Relocations [
  31 // CHECK-NEXT:       [[BeginDisp:0x[A-F0-9]+]] IMAGE_REL_AMD64_ADDR32NB .text
  32 // CHECK-NEXT:       [[EndDisp:0x[A-F0-9]+]] IMAGE_REL_AMD64_ADDR32NB .text
  33 // CHECK-NEXT:       [[UnwindDisp:0x[A-F0-9]+]] IMAGE_REL_AMD64_ADDR32NB .xdata
  34 // CHECK-NEXT:     ]
  35 // CHECK:          SectionData (
  36 // CHECK-NEXT:       0000: 00000000 01000000 00000000
  37 // CHECK-NEXT:     )
  38 // CHECK-NEXT:   }
  39 // CHECK:        UnwindInformation [
  40 // CHECK-NEXT:     RuntimeFunction {
  41 // CHECK-NEXT:     StartAddress: smallFunc {{(\+0x[A-F0-9]+ )?}}([[BeginDisp]])
  42 // CHECK-NEXT:     EndAddress: smallFunc {{(\+0x[A-F0-9]+ )?}}([[EndDisp]])
  43 // CHECK-NEXT:     UnwindInfoAddress: .xdata {{(\+0x[A-F0-9]+ )?}}([[UnwindDisp]])
  44 // CHECK-NEXT:     UnwindInfo {
  45 // CHECK-NEXT:       Version: 1
  46 // CHECK-NEXT:       Flags [
  47 // CHECK-NEXT:       ]
  48 // CHECK-NEXT:       PrologSize: 0
  49 // CHECK-NEXT:       FrameRegister: -
  50 // CHECK-NEXT:       FrameOffset: -
  51 // CHECK-NEXT:       UnwindCodeCount: 0
  52 // CHECK-NEXT:       UnwindCodes [
  53 // CHECK-NEXT:       ]
  54 // CHECK-NEXT:     }
  55 // CHECK-NEXT:   }
  56 // CHECK-NEXT: ]
  57
  58 // Generate the minimal unwind info.
  59 // It contains only the version set to 1. All other bytes are 0.
  60     .globl smallFunc
  61     .def smallFunc; .scl 2; .type 32; .endef
  62     .seh_proc smallFunc
  63 smallFunc:
  64     ret
  65     .seh_endproc