kernel-ark/include/asm-um/processor-i386.h
Karol Swietlicki 4d18de45fa uml: remove xmm checking on x86
This patch removes some code which ran at every boot, but does not seem to do
anything anymore.  Please test.  It works for me but mistakes can happen.

Signed-off-by: Karol Swietlicki <magotari@gmail.com>
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05 09:44:24 -08:00

79 lines
1.8 KiB
C

/*
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#ifndef __UM_PROCESSOR_I386_H
#define __UM_PROCESSOR_I386_H
#include "linux/string.h"
#include "asm/host_ldt.h"
#include "asm/segment.h"
extern int host_has_cmov;
/* include faultinfo structure */
#include "sysdep/faultinfo.h"
struct uml_tls_struct {
struct user_desc tls;
unsigned flushed:1;
unsigned present:1;
};
struct arch_thread {
struct uml_tls_struct tls_array[GDT_ENTRY_TLS_ENTRIES];
unsigned long debugregs[8];
int debugregs_seq;
struct faultinfo faultinfo;
};
#define INIT_ARCH_THREAD { \
.tls_array = { [ 0 ... GDT_ENTRY_TLS_ENTRIES - 1 ] = \
{ .present = 0, .flushed = 0 } }, \
.debugregs = { [ 0 ... 7 ] = 0 }, \
.debugregs_seq = 0, \
.faultinfo = { 0, 0, 0 } \
}
static inline void arch_flush_thread(struct arch_thread *thread)
{
/* Clear any TLS still hanging */
memset(&thread->tls_array, 0, sizeof(thread->tls_array));
}
static inline void arch_copy_thread(struct arch_thread *from,
struct arch_thread *to)
{
memcpy(&to->tls_array, &from->tls_array, sizeof(from->tls_array));
}
#include "asm/arch/user.h"
/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
static inline void rep_nop(void)
{
__asm__ __volatile__("rep;nop": : :"memory");
}
#define cpu_relax() rep_nop()
/*
* Default implementation of macro that returns current
* instruction pointer ("program counter"). Stolen
* from asm-i386/processor.h
*/
#define current_text_addr() \
({ void *pc; __asm__("movl $1f,%0\n1:":"=g" (pc)); pc; })
#define ARCH_IS_STACKGROW(address) \
(address + 32 >= UPT_SP(&current->thread.regs.regs))
#define KSTK_EIP(tsk) KSTK_REG(tsk, EIP)
#define KSTK_ESP(tsk) KSTK_REG(tsk, UESP)
#define KSTK_EBP(tsk) KSTK_REG(tsk, EBP)
#include "asm/processor-generic.h"
#endif