[llvm] [llvm] Win x64 Unwind V2 2/n: Support dumping UOP_Epilog (PR #110338)

[Eli Friedman via llvm-commits]

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@@ -0,0 +1,175 @@
+# RUN: yaml2obj %s -o %t.exe
+# RUN: llvm-objdump --unwind-info %t.exe | FileCheck %s
+
+# CHECK-LABEL:  Unwind info:
+# CHECK-EMPTY:
+# CHECK-NEXT:   Function Table:
+# CHECK-NEXT:     Start Address: 0x1010
+# CHECK-NEXT:     End Address: 0x1017
+# CHECK-NEXT:     Unwind Info Address: 0x2000
+# CHECK-NEXT:       Version: 2
+# CHECK-NEXT:       Flags: 0
+# CHECK-NEXT:       Size of prolog: 4
+# CHECK-NEXT:       Number of Codes: 3
+# CHECK-NEXT:       No frame pointer used
+# CHECK-NEXT:       Unwind Codes:
+# CHECK-NEXT:         0x01: UOP_Epilog atend=yes, length=0x1
+# CHECK-NEXT:         0x0b: UOP_Epilog offset=0xB
+# CHECK-NEXT:         0x04: UOP_AllocSmall 72
+# CHECK-EMPTY:
+# CHECK-NEXT:   Function Table:
+# CHECK-NEXT:     Start Address: 0x1020
+# CHECK-NEXT:     End Address: 0x105c
+# CHECK-NEXT:     Unwind Info Address: 0x200c
+# CHECK-NEXT:       Version: 1
+# CHECK-NEXT:       Flags: 3 UNW_ExceptionHandler UNW_TerminateHandler
+# CHECK-NEXT:       Size of prolog: 4
+# CHECK-NEXT:       Number of Codes: 1
+# CHECK-NEXT:       No frame pointer used
+# CHECK-NEXT:       Unwind Codes:
+# CHECK-NEXT:         0x04: UOP_AllocSmall 56
+
+--- !COFF
+OptionalHeader:
+  AddressOfEntryPoint: 4128
+  ImageBase:       5368709120
+  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, IMAGE_DLL_CHARACTERISTICS_TERMINAL_SERVER_AWARE ]
+  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:            24
+  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:     113
+    SectionData:     C3662E0F1F8400000000000F1F4400005048890C2458C3660F1F8400000000004883EC38E8D7FFFFFFE900000000488D4C2430E8D8FFFFFF904883C438C3488944242889542424488D4C2430E8BFFFFFFF488B4C2428E805000000CC0F1F4000C3662E0F1F8400000000000F1F440000C3
----------------
efriedma-quic wrote:

If the test doesn't actually parse the contents of the text section, please zero it out.  (We don't want difficult-to-audit bits of binary data in the regression tests where we can avoid it.)

https://github.com/llvm/llvm-project/pull/110338