MIPS: math-emu: Inline fpu_emulator_init_fpu()

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/fpu.h

@@ -17,6 +17,7 @@
 #include <asm/mipsregs.h>
 #include <asm/cpu.h>
 #include <asm/cpu-features.h>
+#include <asm/fpu_emulator.h>
 #include <asm/hazards.h>
 #include <asm/processor.h>
 #include <asm/current.h>
@@ -28,7 +29,6 @@
 struct sigcontext;
 struct sigcontext32;
 
-extern void fpu_emulator_init_fpu(void);
 extern void _init_fpu(void);
 extern void _save_fp(struct task_struct *);
 extern void _restore_fp(struct task_struct *);
@@ -156,15 +156,16 @@ static inline int init_fpu(void)
 	int ret = 0;
 
 	preempt_disable();
+
 	if (cpu_has_fpu) {
 		ret = __own_fpu();
 		if (!ret)
 			_init_fpu();
-	} else {
+	} else
 		fpu_emulator_init_fpu();
-	}
 
 	preempt_enable();
+
 	return ret;
 }
 

arch/mips/include/asm/fpu_emulator.h

@@ -23,9 +23,12 @@
 #ifndef _ASM_FPU_EMULATOR_H
 #define _ASM_FPU_EMULATOR_H
 
+#include <linux/sched.h>
 #include <asm/break.h>
+#include <asm/thread_info.h>
 #include <asm/inst.h>
 #include <asm/local.h>
+#include <asm/processor.h>
 
 #ifdef CONFIG_DEBUG_FS
 
@@ -71,4 +74,17 @@ int mm_isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
  */
 #define BREAK_MATH (0x0000000d | (BRK_MEMU << 16))
 
+#define SIGNALLING_NAN 0x7ff800007ff80000LL
+
+static inline void fpu_emulator_init_fpu(void)
+{
+	struct task_struct *t = current;
+	int i;
+
+	t->thread.fpu.fcr31 = 0;
+
+	for (i = 0; i < 32; i++)
+		set_fpr64(&t->thread.fpu.fpr[i], 0, SIGNALLING_NAN);
+}
+
 #endif /* _ASM_FPU_EMULATOR_H */

arch/mips/math-emu/Makefile

@@ -6,7 +6,7 @@ obj-y	+= cp1emu.o ieee754dp.o ieee754sp.o ieee754.o dp_div.o dp_mul.o \
 	   dp_sub.o dp_add.o dp_fsp.o dp_cmp.o dp_simple.o dp_tint.o \
 	   dp_fint.o dp_tlong.o dp_flong.o sp_div.o sp_mul.o sp_sub.o \
 	   sp_add.o sp_fdp.o sp_cmp.o sp_simple.o sp_tint.o sp_fint.o \
-	   sp_tlong.o sp_flong.o kernel_linkage.o dsemul.o
+	   sp_tlong.o sp_flong.o dsemul.o
 
 lib-y	+= ieee754d.o dp_sqrt.o sp_sqrt.o
 

arch/mips/math-emu/kernel_linkage.c

-/*
- *  Kevin D. Kissell, kevink@mips and Carsten Langgaard, carstenl@mips.com
- *  Copyright (C) 2000 MIPS Technologies, Inc.	All rights reserved.
- *
- *  This program is free software; you can distribute it and/or modify it
- *  under the terms of the GNU General Public License (Version 2) as
- *  published by the Free Software Foundation.
- *
- *  This program is distributed in the hope it will be useful, but WITHOUT
- *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- *  for more details.
- *
- *  You should have received a copy of the GNU General Public License along
- *  with this program; if not, write to the Free Software Foundation, Inc.,
- *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
- *
- * Routines corresponding to Linux kernel FP context
- * manipulation primitives for the Algorithmics MIPS
- * FPU Emulator
- */
-#include <linux/printk.h>
-#include <asm/current.h>
-#include <asm/fpu.h>
-#include <asm/fpu_emulator.h>
-
-#define SIGNALLING_NAN 0x7ff800007ff80000LL
-
-void fpu_emulator_init_fpu(void)
-{
-	static int first = 1;
-	int i;
-
-	if (first) {
-		first = 0;
-		printk("Algorithmics/MIPS FPU Emulator v1.5\n");
-	}
-
-	current->thread.fpu.fcr31 = 0;
-	for (i = 0; i < 32; i++)
-		set_fpr64(&current->thread.fpu.fpr[i], 0, SIGNALLING_NAN);
-}