asm: Use SEH assembly when building with clang in MSVC mode.

In MSVC mode, the __SEH__ macro isn't defined, but the .seh directives are supported in assembly. In these cases, we have to hardcode which architectures we know clang supports SEH directives in as it's not exposed otherwise. Signed-off-by: Martin Storsjo <martin@martin.st> Signed-off-by: Jacek Caban <jacek@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

asm: Use SEH assembly when building with clang in MSVC mode.
6844f671 · Martin Storsjo · Alexandre Julliard · dc46af72 · 6844f671
Commit 6844f671 authored Dec 19, 2020 by Martin Storsjo Committed by Alexandre Julliard Dec 21, 2020
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asm.h include/wine/asm.h +1 -1

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--- a/include/wine/asm.h
+++ b/include/wine/asm.h
@@ -41,7 +41,7 @@
 # define __ASM_CFI(str)
 #endif

-#ifdef __SEH__
+#if defined(__SEH__) || (defined(_MSC_VER) && defined(__clang__) && (defined(__x86_64__) || defined(__aarch64__)))
 # if defined(__aarch64__) && defined(__clang_major__) && (__clang_major__ < 12 || defined(__apple_build_version__))
   /* Clang got support for aarch64 SEH assembly directives in Clang 12,
    * before that, only .seh_startproc/.seh_endproc but nothing else was