x86: x86 i387 cleanup

This removes all the old code that is no longer used after
the i387 unification and cleanup.  The i387_64.h is renamed
to i387.h with no changes, but since it replaces the nonempty
one-line stub i387.h it looks like a big diff and not a rename.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 0 insertions, 119 deletions

diff --git a/arch/x86/kernel/i387_64.c b/arch/x86/kernel/i387_64.c
deleted file mode 100644
index f335a76d7ea7..000000000000
--- a/arch/x86/kernel/i387_64.c
+++ /dev/null
@@ -1,119 +0,0 @@
-/*
- *  Copyright (C) 1994 Linus Torvalds
- *  Copyright (C) 2002 Andi Kleen, SuSE Labs
- *
- *  Pentium III FXSR, SSE support
- *  General FPU state handling cleanups
- *	Gareth Hughes <gareth@valinux.com>, May 2000
- * 
- *  x86-64 rework 2002 Andi Kleen. 
- *  Does direct fxsave in and out of user space now for signal handlers.
- *  All the FSAVE<->FXSAVE conversion code has been moved to the 32bit emulation,
- *  the 64bit user space sees a FXSAVE frame directly. 
- */
-
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <asm/processor.h>
-#include <asm/i387.h>
-#include <asm/sigcontext.h>
-#include <asm/user.h>
-#include <asm/ptrace.h>
-#include <asm/uaccess.h>
-
-unsigned int mxcsr_feature_mask __read_mostly = 0xffffffff;
-
-void mxcsr_feature_mask_init(void)
-{
-	unsigned int mask;
-	clts();
-	memset(&current->thread.i387.fxsave, 0, sizeof(struct i387_fxsave_struct));
-	asm volatile("fxsave %0" : : "m" (current->thread.i387.fxsave));
-	mask = current->thread.i387.fxsave.mxcsr_mask;
-	if (mask == 0) mask = 0x0000ffbf;
-	mxcsr_feature_mask &= mask;
-	stts();
-}
-
-/*
- * Called at bootup to set up the initial FPU state that is later cloned
- * into all processes.
- */
-void __cpuinit fpu_init(void)
-{
-	unsigned long oldcr0 = read_cr0();
-	extern void __bad_fxsave_alignment(void);
-		
-	if (offsetof(struct task_struct, thread.i387.fxsave) & 15)
-		__bad_fxsave_alignment();
-	set_in_cr4(X86_CR4_OSFXSR);
-	set_in_cr4(X86_CR4_OSXMMEXCPT);
-
-	write_cr0(oldcr0 & ~((1UL<<3)|(1UL<<2))); /* clear TS and EM */
-
-	mxcsr_feature_mask_init();
-	/* clean state in init */
-	current_thread_info()->status = 0;
-	clear_used_math();
-}
-
-void init_fpu(struct task_struct *child)
-{
-	if (tsk_used_math(child)) {
-		if (child == current)
-			unlazy_fpu(child);
-		return;
-	}	
-	memset(&child->thread.i387.fxsave, 0, sizeof(struct i387_fxsave_struct));
-	child->thread.i387.fxsave.cwd = 0x37f;
-	child->thread.i387.fxsave.mxcsr = 0x1f80;
-	/* only the device not available exception or ptrace can call init_fpu */
-	set_stopped_child_used_math(child);
-}
-
-/*
- * ptrace request handlers.
- */
-
-int get_fpregs(struct user_i387_struct __user *buf, struct task_struct *tsk)
-{
-	init_fpu(tsk);
-	return __copy_to_user(buf, &tsk->thread.i387.fxsave,
-			       sizeof(struct user_i387_struct)) ? -EFAULT : 0;
-}
-
-int set_fpregs(struct task_struct *tsk, struct user_i387_struct __user *buf)
-{
-	if (__copy_from_user(&tsk->thread.i387.fxsave, buf, 
-			     sizeof(struct user_i387_struct)))
-		return -EFAULT;
-		return 0;
-}
-
-/*
- * FPU state for core dumps.
- */
-
-int dump_fpu( struct pt_regs *regs, struct user_i387_struct *fpu )
-{
-	struct task_struct *tsk = current;
-
-	if (!used_math())
-		return 0;
-
-	unlazy_fpu(tsk);
-	memcpy(fpu, &tsk->thread.i387.fxsave, sizeof(struct user_i387_struct)); 
-	return 1; 
-}
-
-int dump_task_fpu(struct task_struct *tsk, struct user_i387_struct *fpu)
-{
-	int fpvalid = !!tsk_used_math(tsk);
-
-	if (fpvalid) {
-		if (tsk == current)
-			unlazy_fpu(tsk);
-		memcpy(fpu, &tsk->thread.i387.fxsave, sizeof(struct user_i387_struct)); 	
-}
-	return fpvalid;
-}