From: Billy Laws <blaw...@gmail.com>
ARM64EC targets are identified by the __arm64ec__, _M_ARM64EC, and
_ARM64EC_ macros.
ARM64EC code functions as an __x86_64__ compiler while utilizing the
AArch64 instruction set. Consequently, it defines the __x86_64__,
_M_AMD64, and _AMD64_ macros, but not
__aarch64__, _M_ARM64, or _ARM64_.
Signed-off-by: Jacek Caban <ja...@codeweavers.com>
---
I'm submitting this as the initial step in supporting the ARM64EC target
in mingw-w64. This implementation is extracted from Billy Laws'
mingw-w64 fork [1].
With the current LLVM git, ARM64EC is roughly supported across tools
(clang, lld-link, llvm-dlltool, llvm-ar, etc.). However, some features
remain to be implemented, such as support for hybrid ARM64X binaries.
Runtime components, primarily compiler-rt, also still need porting.
Despite these gaps, I believe it's a good time to begin incorporating
the foundational elements into mingw-w64.
[1] https://github.com/bylaws/mingw-w64
mingw-w64-headers/crt/_mingw_mac.h | 7 +++++++
mingw-w64-headers/include/winnt.h | 7 +++++++
2 files changed, 14 insertions(+)
diff --git a/mingw-w64-headers/crt/_mingw_mac.h b/mingw-w64-headers/crt/_mingw_mac.h
index e7fd07220..3fe61328e 100644
--- a/mingw-w64-headers/crt/_mingw_mac.h
+++ b/mingw-w64-headers/crt/_mingw_mac.h
@@ -88,6 +88,13 @@
# endif
#endif
+#if defined(__arm64ec__) && !defined(_M_ARM64EC)
+# define _M_ARM64EC 1
+# ifndef _ARM64EC_
+# define _ARM64EC_ 1
+# endif
+#endif
+
#ifndef _X86_
/* MS does not prefix symbols by underscores for 64-bit. */
# ifndef __MINGW_USE_UNDERSCORE_PREFIX
diff --git a/mingw-w64-headers/include/winnt.h b/mingw-w64-headers/include/winnt.h
index 5179840f4..f232ad4a7 100644
--- a/mingw-w64-headers/include/winnt.h
+++ b/mingw-w64-headers/include/winnt.h
@@ -48,6 +48,13 @@ extern "C" {
#endif
#endif /* _ARM64_ */
+#if defined(__arm64ec__) && \
+ !(defined(_X86_) || defined(__i386__) || defined(_IA64_) || defined (__arm__) || defined(__aarch64__))
+#if !defined(_ARM64EC_)
+#define _ARM64EC_
+#endif
+#endif /* _ARM64EC_ */
+
#if defined(__ia64__) && \
!(defined(_X86_) || defined(__x86_64) || defined(_AMD64_) || defined (__arm__) || defined(__aarch64__))
#if !defined(_IA64_)
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