Add a test for Win64 EH unwind information emission.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132180 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/MC/COFF/seh.s b/test/MC/COFF/seh.s
new file mode 100644 (file)
index 0000000..236b13f
--- /dev/null
+++ b/test/MC/COFF/seh.s
@@ -0,0 +1,51 @@
+// This test checks that the SEH directives emit the correct unwind data.
+// RUN: llvm-mc -triple x86_64-pc-win32 -filetype=obj %s | coff-dump.py | FileCheck %s
+
+// CHECK:      Name                 = .xdata
+// CHECK-NEXT: VirtualSize
+// CHECK-NEXT: VirtualAddress
+// CHECK-NEXT: SizeOfRawData        = 44
+// CHECK-NEXT: PointerToRawData
+// CHECK-NEXT: PointerToRelocations
+// CHECK-NEXT: PointerToLineNumbers
+// CHECK-NEXT: NumberOfRelocations  = 4
+// CHECK-NEXT: NumberOfLineNumbers  = 0
+// CHECK-NEXT: Charateristics
+// CHECK-NEXT:   IMAGE_SCN_CNT_INITIALIZED_DATA
+// CHECK-NEXT:   IMAGE_SCN_ALIGN_4BYTES
+// CHECK-NEXT:   IMAGE_SCN_MEM_READ
+// CHECK-NEXT:   IMAGE_SCN_MEM_WRITE
+// CHECK-NEXT: SectionData
+// CHECK-NEXT:   21 12 08 30 00 30 0F 03 - 0E 88 00 00 09 46 02 00
+// CHECK-NEXT:   04 22 00 A1 00 00 00 00 - 00 00 00 00 24 00 00 00
+// CHECK-NEXT:   00 00 00 00 1B 00 00 00 - 00 00 00 00
+
+    .text
+    .globl func
+    .def func; .scl 2; .type 32; .endef
+    .seh_proc func
+func:
+    .seh_pushframe @code
+    subq $24, %rsp
+    .seh_stackalloc 24
+    movq %rsi, 16(%rsp)
+    .seh_savereg %rsi, 16
+    movups %xmm8, (%rsp)
+    .seh_savexmm %xmm8, 0
+    pushq %rbx
+    .seh_pushreg 3
+    mov %rsp, %rbx
+    .seh_setframe 3, 0
+    .seh_endprologue
+    .seh_handler __C_specific_handler, @except
+    .seh_handlerdata
+    .long 0
+    .text
+    .seh_startchained
+    .seh_endprologue
+    .seh_endchained
+    lea (%rbx), %rsp
+    pop %rbx
+    addq $24, %rsp
+    ret
+    .seh_endproc