crt: Move ARM64 trunc implementation to C files.

In preparation for using naked functions.

Signed-off-by: Jacek Caban <jacek@codeweavers.com>

mingw-w64-crt/Makefile.am

@@ -705,8 +705,8 @@ src_msvcrtarm64=\
   math/arm64/nearbyint.S \
   math/arm64/nearbyintf.S \
   math/arm64/nearbyintl.S \
-  math/arm64/trunc.S \
-  math/arm64/truncf.S \
+  math/arm64/trunc.c \
+  math/arm64/truncf.c \
   misc/__p___argc.c \
   misc/__p___argv.c \
   misc/__p___wargv.c \

mingw-w64-crt/include/internal.h

@@ -287,6 +287,14 @@ static inline unsigned int __mingw_statusfp(void)
     return flags;
 }
 
+#define __ASM_NAKED_FUNC(name,code)  \
+    asm(".text\n\t" \
+        ".p2align 2\n\t" \
+        ".globl " __MINGW64_STRINGIFY(__MINGW_USYMBOL(name)) "\n\t" \
+        ".def " __MINGW64_STRINGIFY(__MINGW_USYMBOL(name)) "; .scl 2; .type 32; .endef\n\t" \
+        __MINGW64_STRINGIFY(__MINGW_USYMBOL(name)) ":\n\t" \
+        code "\n\t");
+
 #ifdef __cplusplus
 }
 #endif

mingw-w64-crt/math/arm64/trunc.c

@@ -3,14 +3,10 @@
  * This file is part of the mingw-w64 runtime package.
  * No warranty is given; refer to the file DISCLAIMER.PD within this package.
  */
-#include <_mingw_mac.h>
 
-	.file "trunc.S"
-	.text
-	.p2align 2
-	.globl __MINGW_USYMBOL(trunc)
-        .def    __MINGW_USYMBOL(trunc);  .scl    2;      .type   32;     .endef
+#include <math.h>
+#include <internal.h>
 
-__MINGW_USYMBOL(trunc):
-	frintz	d0, d0
-	ret
+__ASM_NAKED_FUNC(trunc,
+                 "frintz d0, d0\n\t"
+                 "ret")

mingw-w64-crt/math/arm64/truncf.S

@@ -1,16 +0,0 @@
-/**
- * This file has no copyright assigned and is placed in the Public Domain.
- * This file is part of the mingw-w64 runtime package.
- * No warranty is given; refer to the file DISCLAIMER.PD within this package.
- */
-#include <_mingw_mac.h>
-
-        .file "truncf.S"
-        .text
-        .p2align 2
-        .globl __MINGW_USYMBOL(truncf)
-        .def    __MINGW_USYMBOL(truncf);  .scl    2;      .type   32;     .endef
-
-__MINGW_USYMBOL(truncf):
-	frintz	s0, s0
-	ret

mingw-w64-crt/math/arm64/truncf.c

@@ -0,0 +1,12 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the mingw-w64 runtime package.
+ * No warranty is given; refer to the file DISCLAIMER.PD within this package.
+ */
+
+#include <math.h>
+#include <internal.h>
+
+__ASM_NAKED_FUNC(truncf,
+                 "frintz s0, s0\n\t"
+                 "ret")