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Diffstat (limited to 'include/asm-x86/i387_32.h')
-rw-r--r--include/asm-x86/i387_32.h149
1 files changed, 0 insertions, 149 deletions
diff --git a/include/asm-x86/i387_32.h b/include/asm-x86/i387_32.h
deleted file mode 100644
index 9ac2502cdd3d..000000000000
--- a/include/asm-x86/i387_32.h
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- * Copyright (C) 1994 Linus Torvalds
- *
- * Pentium III FXSR, SSE support
- * General FPU state handling cleanups
- * Gareth Hughes <gareth@valinux.com>, May 2000
- */
-
-#ifndef __ASM_I386_I387_H
-#define __ASM_I386_I387_H
-
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/kernel_stat.h>
-#include <asm/processor.h>
-#include <asm/sigcontext.h>
-#include <asm/user.h>
-
-extern void mxcsr_feature_mask_init(void);
-extern void init_fpu(struct task_struct *);
-
-/*
- * FPU lazy state save handling...
- */
-
-/*
- * The "nop" is needed to make the instructions the same
- * length.
- */
-#define restore_fpu(tsk) \
- alternative_input( \
- "nop ; frstor %1", \
- "fxrstor %1", \
- X86_FEATURE_FXSR, \
- "m" ((tsk)->thread.i387.fxsave))
-
-extern void kernel_fpu_begin(void);
-#define kernel_fpu_end() do { stts(); preempt_enable(); } while(0)
-
-/* We need a safe address that is cheap to find and that is already
- in L1 during context switch. The best choices are unfortunately
- different for UP and SMP */
-#ifdef CONFIG_SMP
-#define safe_address (__per_cpu_offset[0])
-#else
-#define safe_address (kstat_cpu(0).cpustat.user)
-#endif
-
-/*
- * These must be called with preempt disabled
- */
-static inline void __save_init_fpu( struct task_struct *tsk )
-{
- /* Use more nops than strictly needed in case the compiler
- varies code */
- alternative_input(
- "fnsave %[fx] ;fwait;" GENERIC_NOP8 GENERIC_NOP4,
- "fxsave %[fx]\n"
- "bt $7,%[fsw] ; jnc 1f ; fnclex\n1:",
- X86_FEATURE_FXSR,
- [fx] "m" (tsk->thread.i387.fxsave),
- [fsw] "m" (tsk->thread.i387.fxsave.swd) : "memory");
- /* AMD K7/K8 CPUs don't save/restore FDP/FIP/FOP unless an exception
- is pending. Clear the x87 state here by setting it to fixed
- values. safe_address is a random variable that should be in L1 */
- alternative_input(
- GENERIC_NOP8 GENERIC_NOP2,
- "emms\n\t" /* clear stack tags */
- "fildl %[addr]", /* set F?P to defined value */
- X86_FEATURE_FXSAVE_LEAK,
- [addr] "m" (safe_address));
- task_thread_info(tsk)->status &= ~TS_USEDFPU;
-}
-
-#define __unlazy_fpu( tsk ) do { \
- if (task_thread_info(tsk)->status & TS_USEDFPU) { \
- __save_init_fpu(tsk); \
- stts(); \
- } else \
- tsk->fpu_counter = 0; \
-} while (0)
-
-#define __clear_fpu( tsk ) \
-do { \
- if (task_thread_info(tsk)->status & TS_USEDFPU) { \
- asm volatile("fnclex ; fwait"); \
- task_thread_info(tsk)->status &= ~TS_USEDFPU; \
- stts(); \
- } \
-} while (0)
-
-
-/*
- * These disable preemption on their own and are safe
- */
-static inline void save_init_fpu( struct task_struct *tsk )
-{
- preempt_disable();
- __save_init_fpu(tsk);
- stts();
- preempt_enable();
-}
-
-#define unlazy_fpu( tsk ) do { \
- preempt_disable(); \
- __unlazy_fpu(tsk); \
- preempt_enable(); \
-} while (0)
-
-#define clear_fpu( tsk ) do { \
- preempt_disable(); \
- __clear_fpu( tsk ); \
- preempt_enable(); \
-} while (0)
-
-/*
- * FPU state interaction...
- */
-extern unsigned short get_fpu_cwd( struct task_struct *tsk );
-extern unsigned short get_fpu_swd( struct task_struct *tsk );
-extern unsigned short get_fpu_mxcsr( struct task_struct *tsk );
-extern asmlinkage void math_state_restore(void);
-
-/*
- * Signal frame handlers...
- */
-extern int save_i387( struct _fpstate __user *buf );
-extern int restore_i387( struct _fpstate __user *buf );
-
-/*
- * ptrace request handers...
- */
-extern int get_fpregs( struct user_i387_struct __user *buf,
- struct task_struct *tsk );
-extern int set_fpregs( struct task_struct *tsk,
- struct user_i387_struct __user *buf );
-
-extern int get_fpxregs( struct user_fxsr_struct __user *buf,
- struct task_struct *tsk );
-extern int set_fpxregs( struct task_struct *tsk,
- struct user_fxsr_struct __user *buf );
-
-/*
- * FPU state for core dumps...
- */
-extern int dump_fpu( struct pt_regs *regs,
- struct user_i387_struct *fpu );
-
-#endif /* __ASM_I386_I387_H */