msun/aarch64: convert fenv functions to proper linkage

namely
	fegetexceptflag(3)
	fesetexceptflag(3)
	feraiseexcept(3)
	fetestexcept(3)
	fegetround(3)
	fesetround(3)
	fegetenv(3)
	feholdexcept(3)
	fesetenv(3)
	feupdateenv(3)
	feenableexcept(3)
	fedisableexcept(3)
	fegetexcept(3)

PR:	277958
Reviewed by:	dim
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D56139

lib/msun/aarch64/fenv.c

@@ -44,16 +44,62 @@ int
 	return (__feclearexcept_int(excepts));
 }
 
-extern inline int fegetexceptflag(fexcept_t *__flagp, int __excepts);
-extern inline int fesetexceptflag(const fexcept_t *__flagp, int __excepts);
-extern inline int feraiseexcept(int __excepts);
-extern inline int fetestexcept(int __excepts);
-extern inline int fegetround(void);
-extern inline int fesetround(int __round);
-extern inline int fegetenv(fenv_t *__envp);
-extern inline int feholdexcept(fenv_t *__envp);
-extern inline int fesetenv(const fenv_t *__envp);
-extern inline int feupdateenv(const fenv_t *__envp);
-extern inline int feenableexcept(int __mask);
-extern inline int fedisableexcept(int __mask);
-extern inline int fegetexcept(void);
+int
+(fegetexceptflag)(fexcept_t *flagp, int excepts)
+{
+	return (__fegetexceptflag_int(flagp, excepts));
+}
+
+int
+(fesetexceptflag)(const fexcept_t *flagp, int excepts)
+{
+	return (__fesetexceptflag_int(flagp, excepts));
+}
+
+int
+(feraiseexcept)(int excepts)
+{
+	return (__feraiseexcept_int(excepts));
+}
+
+int
+(fetestexcept)(int excepts)
+{
+	return (__fetestexcept_int(excepts));
+}
+
+int
+(fegetround)(void)
+{
+	return (__fegetround_int());
+}
+
+int
+(fesetround)(int round)
+{
+	return (__fesetround_int(round));
+}
+
+int
+(fegetenv)(fenv_t *envp)
+{
+	return (__fegetenv_int(envp));
+}
+
+int
+(feholdexcept)(fenv_t *envp)
+{
+	return (__feholdexcept_int(envp));
+}
+
+int
+(fesetenv)(const fenv_t *envp)
+{
+	return (__fesetenv_int(envp));
+}
+
+int
+(feupdateenv)(const fenv_t *envp)
+{
+	return (__feupdateenv_int(envp));
+}

lib/msun/aarch64/fenv.h

@@ -82,7 +82,28 @@ extern const fenv_t	__fe_dfl_env;
 #define	__msr_fpsr(__r)	__asm __volatile("msr fpsr, %0" : : "r" (__r))
 
 int feclearexcept(int);
+int fegetexceptflag(fexcept_t *, int);
+int fesetexceptflag(const fexcept_t *, int);
+int feraiseexcept(int);
+int fetestexcept(int);
+int fegetround(void);
+int fesetround(int);
+int fegetenv(fenv_t *);
+int feholdexcept(fenv_t *);
+int fesetenv(const fenv_t *);
+int feupdateenv(const fenv_t *);
+
 #define	feclearexcept(a)	__feclearexcept_int(a)
+#define	fegetexceptflag(e, a)	__fegetexceptflag_int(e, a)
+#define	fesetexceptflag(e, a)	__fesetexceptflag_int(e, a)
+#define	feraiseexcept(a)	__feraiseexcept_int(a)
+#define	fetestexcept(a)		__fetestexcept_int(a)
+#define	fegetround()		__fegetround_int()
+#define	fesetround(a)		__fesetround_int(a)
+#define	fegetenv(e)		__fegetenv_int(e)
+#define	feholdexcept(e)		__feholdexcept_int(e)
+#define	fesetenv(e)		__fesetenv_int(e)
+#define	feupdateenv(e)		__feupdateenv_int(e)
 
 __fenv_static inline int
 __feclearexcept_int(int __excepts)
@@ -96,7 +117,7 @@ __feclearexcept_int(int __excepts)
 }
 
 __fenv_static inline int
-fegetexceptflag(fexcept_t *__flagp, int __excepts)
+__fegetexceptflag_int(fexcept_t *__flagp, int __excepts)
 {
 	fexcept_t __r;
 
@@ -106,7 +127,7 @@ fegetexceptflag(fexcept_t *__flagp, int __excepts)
 }
 
 __fenv_static inline int
-fesetexceptflag(const fexcept_t *__flagp, int __excepts)
+__fesetexceptflag_int(const fexcept_t *__flagp, int __excepts)
 {
 	fexcept_t __r;
 
@@ -118,7 +139,7 @@ fesetexceptflag(const fexcept_t *__flagp, int __excepts)
 }
 
 __fenv_static inline int
-feraiseexcept(int __excepts)
+__feraiseexcept_int(int __excepts)
 {
 	fexcept_t __r;
 
@@ -129,7 +150,7 @@ feraiseexcept(int __excepts)
 }
 
 __fenv_static inline int
-fetestexcept(int __excepts)
+__fetestexcept_int(int __excepts)
 {
 	fexcept_t __r;
 
@@ -138,7 +159,7 @@ fetestexcept(int __excepts)
 }
 
 __fenv_static inline int
-fegetround(void)
+__fegetround_int(void)
 {
 	fenv_t __r;
 
@@ -147,7 +168,7 @@ fegetround(void)
 }
 
 __fenv_static inline int
-fesetround(int __round)
+__fesetround_int(int __round)
 {
 	fenv_t __r;
 
@@ -161,7 +182,7 @@ fesetround(int __round)
 }
 
 __fenv_static inline int
-fegetenv(fenv_t *__envp)
+__fegetenv_int(fenv_t *__envp)
 {
 	__uint64_t fpcr;
 	__uint64_t fpsr;
@@ -174,7 +195,7 @@ fegetenv(fenv_t *__envp)
 }
 
 __fenv_static inline int
-feholdexcept(fenv_t *__envp)
+__feholdexcept_int(fenv_t *__envp)
 {
 	fenv_t __r;
 
@@ -191,7 +212,7 @@ feholdexcept(fenv_t *__envp)
 }
 
 __fenv_static inline int
-fesetenv(const fenv_t *__envp)
+__fesetenv_int(const fenv_t *__envp)
 {
 
 	__msr_fpcr((*__envp) >> 32);
@@ -200,7 +221,7 @@ fesetenv(const fenv_t *__envp)
 }
 
 __fenv_static inline int
-feupdateenv(const fenv_t *__envp)
+__feupdateenv_int(const fenv_t *__envp)
 {
 	fexcept_t __r;