patch-2.4.20 linux-2.4.20/arch/mips64/math-emu/kernel_linkage.c
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- Lines: 96
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
linux-2.4.19/arch/mips64/math-emu/kernel_linkage.c
- Orig date:
Mon Jul 2 13:56:41 2001
diff -urN linux-2.4.19/arch/mips64/math-emu/kernel_linkage.c linux-2.4.20/arch/mips64/math-emu/kernel_linkage.c
@@ -1,95 +0,0 @@
-/**************************************************************************
- *
- * 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.,
- * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- *************************************************************************/
-/*
- * Routines corresponding to Linux kernel FP context
- * manipulation primitives for the Algorithmics MIPS
- * FPU Emulator
- */
-
-#include <linux/sched.h>
-#include <asm/processor.h>
-#include <asm/signal.h>
-#include <asm/uaccess.h>
-
-#include <asm/fpu_emulator.h>
-
-extern struct mips_fpu_emulator_private fpuemuprivate;
-
-#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 v1.4\n");
- }
-
- current->thread.fpu.soft.sr = 0;
- for (i = 0; i < 32; i++) {
- current->thread.fpu.soft.regs[i] = SIGNALLING_NAN;
- }
-}
-
-
-/*
- * Emulator context save/restore to/from a signal context
- * presumed to be on the user stack, and therefore accessed
- * with appropriate macros from uaccess.h
- */
-
-int fpu_emulator_save_context(struct sigcontext *sc)
-{
- int i;
- int err = 0;
-
- for (i = 0; i < 32; i++) {
- err |=
- __put_user(current->thread.fpu.soft.regs[i],
- &sc->sc_fpregs[i]);
- }
- err |= __put_user(current->thread.fpu.soft.sr, &sc->sc_fpc_csr);
- err |= __put_user(fpuemuprivate.eir, &sc->sc_fpc_eir);
-
- return err;
-}
-
-int fpu_emulator_restore_context(struct sigcontext *sc)
-{
- int i;
- int err = 0;
-
- for (i = 0; i < 32; i++) {
- err |=
- __get_user(current->thread.fpu.soft.regs[i],
- &sc->sc_fpregs[i]);
- }
- err |= __get_user(current->thread.fpu.soft.sr, &sc->sc_fpc_csr);
- err |= __get_user(fpuemuprivate.eir, &sc->sc_fpc_eir);
-
- return err;
-}
-
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