[v2,07/13] Exclude i386 functionality from aarch64 build
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From: Zac Walker <zacwalker@microsoft.com>
Date: Fri, 1 Mar 2024 02:35:40 +0100
Subject: [PATCH v2 07/13] Exclude i386 functionality from aarch64 build
This patch defines TARGET_AARCH64_MS_ABI in config.gcc and uses it to
exclude i386 functionality from aarch64 build and adjust MinGW headers
for AArch64 MS ABI.
gcc/ChangeLog:
* config.gcc: Define TARGET_AARCH64_MS_ABI.
* config/mingw/mingw-stdint.h (INTPTR_TYPE): Use
TARGET_AARCH64_MS_ABI to adjust MinGW headers for
AArch64 MS ABI.
(UINTPTR_TYPE): Likewise.
(defined): Likewise.
* config/mingw/mingw32.h (DEFAULT_ABI): Likewise.
(defined): Likewise.
* config/mingw/winnt.cc (defined): Use TARGET_ARM64_MS_ABI to
exclude ix86_get_callcvt.
(i386_pe_maybe_mangle_decl_assembler_name): Likewise.
(i386_pe_mangle_decl_assembler_name): Likewise.
---
gcc/config.gcc | 1 +
gcc/config/mingw/mingw-stdint.h | 9 +++++++--
gcc/config/mingw/mingw32.h | 6 +++++-
gcc/config/mingw/winnt.cc | 8 ++++++++
4 files changed, 21 insertions(+), 3 deletions(-)
@@ -1278,6 +1278,7 @@ aarch64-*-mingw*)
esac
default_use_cxa_atexit=yes
user_headers_inc_next_post="${user_headers_inc_next_post} float.h"
+ tm_defines="${tm_defines} TARGET_AARCH64_MS_ABI=1"
;;
aarch64*-wrs-vxworks*)
tm_file="${tm_file} elfos.h aarch64/aarch64-elf.h"
@@ -46,5 +46,10 @@ along with GCC; see the file COPYING3. If not see
#define UINT_FAST32_TYPE "unsigned int"
#define UINT_FAST64_TYPE "long long unsigned int"
-#define INTPTR_TYPE (TARGET_64BIT ? "long long int" : "int")
-#define UINTPTR_TYPE (TARGET_64BIT ? "long long unsigned int" : "unsigned int")
+#if defined (TARGET_AARCH64_MS_ABI)
+# define INTPTR_TYPE "long long int"
+# define UINTPTR_TYPE "long long unsigned int"
+#else
+# define INTPTR_TYPE (TARGET_64BIT ? "long long int" : "int")
+# define UINTPTR_TYPE (TARGET_64BIT ? "long long unsigned int" : "unsigned int")
+#endif
\ No newline at end of file
@@ -19,7 +19,11 @@ along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#undef DEFAULT_ABI
-#define DEFAULT_ABI MS_ABI
+#if defined (TARGET_AARCH64_MS_ABI)
+# define DEFAULT_ABI AARCH64_CALLING_ABI_MS
+#else
+# define DEFAULT_ABI MS_ABI
+#endif
/* By default, target has a 80387, uses IEEE compatible arithmetic,
returns float values in the 387 and needs stack probes.
@@ -224,6 +224,8 @@ gen_stdcall_or_fastcall_suffix (tree decl, tree id, bool fastcall)
return get_identifier (new_str);
}
+#if !defined (TARGET_AARCH64_MS_ABI)
+
/* Maybe decorate and get a new identifier for the DECL of a stdcall or
fastcall function. The original identifier is supplied in ID. */
@@ -250,6 +252,8 @@ i386_pe_maybe_mangle_decl_assembler_name (tree decl, tree id)
return new_id;
}
+#endif
+
/* Emit an assembler directive to set symbol for DECL visibility to
the visibility type VIS, which must not be VISIBILITY_DEFAULT.
As for PE there is no hidden support in gas, we just warn for
@@ -266,6 +270,8 @@ i386_pe_assemble_visibility (tree decl, int)
"in this configuration; ignored");
}
+#if !defined (TARGET_AARCH64_MS_ABI)
+
/* This is used as a target hook to modify the DECL_ASSEMBLER_NAME
in the language-independent default hook
langhooks,c:lhd_set_decl_assembler_name ()
@@ -278,6 +284,8 @@ i386_pe_mangle_decl_assembler_name (tree decl, tree id)
return (new_id ? new_id : id);
}
+#endif
+
/* This hook behaves the same as varasm.cc/assemble_name(), but
generates the name into memory rather than outputting it to
a file stream. */