[PATCH v4 29/35] sparc64: vdso: Move syscall fallbacks into header

["Thomas Weißschuh" <thomas.weissschuh@linutronix.de>]

The generic vDSO libraries expected the syscall fallbacks in
asm/vdso/gettimeofday.h. To prepare the adoption of the generic library,
move the existing functions there.

While at it, rename them so they match what the generic library expects.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Tested-by: Andreas Larsson <andreas@gaisler.com>
Reviewed-by: Andreas Larsson <andreas@gaisler.com>
Acked-by: Andreas Larsson <andreas@gaisler.com>
---
 arch/sparc/include/asm/vdso/gettimeofday.h | 50 +++++++++++++++++++++++++++++
 arch/sparc/vdso/vclock_gettime.c           | 51 ++----------------------------
 2 files changed, 52 insertions(+), 49 deletions(-)

diff --git a/arch/sparc/include/asm/vdso/gettimeofday.h b/arch/sparc/include/asm/vdso/gettimeofday.h
index 31f6505d3ab5dde9e02eca6da9182e5fb91031c4..429dc080568f59145cc0bc696060adeb60ac177a 100644
--- a/arch/sparc/include/asm/vdso/gettimeofday.h
+++ b/arch/sparc/include/asm/vdso/gettimeofday.h
@@ -6,6 +6,9 @@
 #ifndef _ASM_SPARC_VDSO_GETTIMEOFDAY_H
 #define _ASM_SPARC_VDSO_GETTIMEOFDAY_H
 
+#include <uapi/linux/time.h>
+#include <uapi/linux/unistd.h>
+
 #include <linux/types.h>
 #include <asm/vvar.h>
 
@@ -75,4 +78,51 @@ static __always_inline u64 __arch_get_hw_counter(struct vvar_data *vvar)
 		return vread_tick();
 }
 
+#ifdef	CONFIG_SPARC64
+#define SYSCALL_STRING							\
+	"ta	0x6d;"							\
+	"bcs,a	1f;"							\
+	" sub	%%g0, %%o0, %%o0;"					\
+	"1:"
+#else
+#define SYSCALL_STRING							\
+	"ta	0x10;"							\
+	"bcs,a	1f;"							\
+	" sub	%%g0, %%o0, %%o0;"					\
+	"1:"
+#endif
+
+#define SYSCALL_CLOBBERS						\
+	"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",			\
+	"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",		\
+	"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",		\
+	"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",		\
+	"f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46",		\
+	"f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62",		\
+	"cc", "memory"
+
+static __always_inline
+long clock_gettime_fallback(clockid_t clock, struct __kernel_old_timespec *ts)
+{
+	register long num __asm__("g1") = __NR_clock_gettime;
+	register long o0 __asm__("o0") = clock;
+	register long o1 __asm__("o1") = (long) ts;
+
+	__asm__ __volatile__(SYSCALL_STRING : "=r" (o0) : "r" (num),
+			     "0" (o0), "r" (o1) : SYSCALL_CLOBBERS);
+	return o0;
+}
+
+static __always_inline
+long gettimeofday_fallback(struct __kernel_old_timeval *tv, struct timezone *tz)
+{
+	register long num __asm__("g1") = __NR_gettimeofday;
+	register long o0 __asm__("o0") = (long) tv;
+	register long o1 __asm__("o1") = (long) tz;
+
+	__asm__ __volatile__(SYSCALL_STRING : "=r" (o0) : "r" (num),
+			     "0" (o0), "r" (o1) : SYSCALL_CLOBBERS);
+	return o0;
+}
+
 #endif /* _ASM_SPARC_VDSO_GETTIMEOFDAY_H */
diff --git a/arch/sparc/vdso/vclock_gettime.c b/arch/sparc/vdso/vclock_gettime.c
index 16ac80982a00b9f965453b89a0cc111312baa9b2..e768c0b84b3420deab2f74335892d40a5b515ee7 100644
--- a/arch/sparc/vdso/vclock_gettime.c
+++ b/arch/sparc/vdso/vclock_gettime.c
@@ -13,38 +13,13 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/time.h>
 #include <linux/string.h>
 #include <asm/io.h>
-#include <asm/unistd.h>
 #include <asm/timex.h>
 #include <asm/clocksource.h>
 #include <asm/vdso/gettimeofday.h>
 #include <asm/vvar.h>
 
-#ifdef	CONFIG_SPARC64
-#define SYSCALL_STRING							\
-	"ta	0x6d;"							\
-	"bcs,a	1f;"							\
-	" sub	%%g0, %%o0, %%o0;"					\
-	"1:"
-#else
-#define SYSCALL_STRING							\
-	"ta	0x10;"							\
-	"bcs,a	1f;"							\
-	" sub	%%g0, %%o0, %%o0;"					\
-	"1:"
-#endif
-
-#define SYSCALL_CLOBBERS						\
-	"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",			\
-	"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",		\
-	"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",		\
-	"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",		\
-	"f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46",		\
-	"f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62",		\
-	"cc", "memory"
-
 /*
  * Compute the vvar page's address in the process address space, and return it
  * as a pointer to the vvar_data.
@@ -64,28 +39,6 @@ notrace static __always_inline struct vvar_data *get_vvar_data(void)
 	return (struct vvar_data *) ret;
 }
 
-notrace static long vdso_fallback_gettime(long clock, struct __kernel_old_timespec *ts)
-{
-	register long num __asm__("g1") = __NR_clock_gettime;
-	register long o0 __asm__("o0") = clock;
-	register long o1 __asm__("o1") = (long) ts;
-
-	__asm__ __volatile__(SYSCALL_STRING : "=r" (o0) : "r" (num),
-			     "0" (o0), "r" (o1) : SYSCALL_CLOBBERS);
-	return o0;
-}
-
-notrace static long vdso_fallback_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
-{
-	register long num __asm__("g1") = __NR_gettimeofday;
-	register long o0 __asm__("o0") = (long) tv;
-	register long o1 __asm__("o1") = (long) tz;
-
-	__asm__ __volatile__(SYSCALL_STRING : "=r" (o0) : "r" (num),
-			     "0" (o0), "r" (o1) : SYSCALL_CLOBBERS);
-	return o0;
-}
-
 notrace static __always_inline u64 vgetsns(struct vvar_data *vvar)
 {
 	u64 v;
@@ -184,7 +137,7 @@ __vdso_clock_gettime(clockid_t clock, struct __kernel_old_timespec *ts)
 	/*
 	 * Unknown clock ID ? Fall back to the syscall.
 	 */
-	return vdso_fallback_gettime(clock, ts);
+	return clock_gettime_fallback(clock, ts);
 }
 int
 clock_gettime(clockid_t, struct __kernel_old_timespec *)
@@ -220,7 +173,7 @@ __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
 		}
 		return 0;
 	}
-	return vdso_fallback_gettimeofday(tv, tz);
+	return gettimeofday_fallback(tv, tz);
 }
 int
 gettimeofday(struct __kernel_old_timeval *, struct timezone *)

-- 
2.51.0