Commit e0cc3a42 authored by Ralf Baechle's avatar Ralf Baechle

MIPS: math-emu: Inline fpu_emulator_init_fpu()

Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 3f7cac41
......@@ -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;
}
......
......@@ -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 */
......@@ -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
......
/*
* 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);
}
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