diff options
Diffstat (limited to 'arch/mips/math-emu/kernel_linkage.c')
| -rw-r--r-- | arch/mips/math-emu/kernel_linkage.c | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/arch/mips/math-emu/kernel_linkage.c b/arch/mips/math-emu/kernel_linkage.c deleted file mode 100644 index 3aeae07ed5b8..000000000000 --- a/arch/mips/math-emu/kernel_linkage.c +++ /dev/null @@ -1,117 +0,0 @@ -/* - * 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.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++) { - current->thread.fpu.fpr[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 __user *sc) -{ - int i; - int err = 0; - - for (i = 0; i < 32; i++) { - err |= - __put_user(current->thread.fpu.fpr[i], &sc->sc_fpregs[i]); - } - err |= __put_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr); - - return err; -} - -int fpu_emulator_restore_context(struct sigcontext __user *sc) -{ - int i; - int err = 0; - - for (i = 0; i < 32; i++) { - err |= - __get_user(current->thread.fpu.fpr[i], &sc->sc_fpregs[i]); - } - err |= __get_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr); - - return err; -} - -#ifdef CONFIG_64BIT -/* - * This is the o32 version - */ - -int fpu_emulator_save_context32(struct sigcontext32 __user *sc) -{ - int i; - int err = 0; - int inc = test_thread_flag(TIF_32BIT_FPREGS) ? 2 : 1; - - for (i = 0; i < 32; i += inc) { - err |= - __put_user(current->thread.fpu.fpr[i], &sc->sc_fpregs[i]); - } - err |= __put_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr); - - return err; -} - -int fpu_emulator_restore_context32(struct sigcontext32 __user *sc) -{ - int i; - int err = 0; - int inc = test_thread_flag(TIF_32BIT_FPREGS) ? 2 : 1; - - for (i = 0; i < 32; i += inc) { - err |= - __get_user(current->thread.fpu.fpr[i], &sc->sc_fpregs[i]); - } - err |= __get_user(current->thread.fpu.fcr31, &sc->sc_fpc_csr); - - return err; -} -#endif |