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Ignore whitespace Rev 1018 → Rev 1019

/kernel/trunk/arch/ia32/src/fpu_context.c
31,7 → 31,13
#include <arch.h>
#include <cpu.h>
 
void fpu_context_save(fpu_context_t *fctx)
typedef void (*fpu_context_function)(fpu_context_t *fctx);
 
static fpu_context_function fpu_save,fpu_restore;
 
 
 
static void fpu_context_f_save(fpu_context_t *fctx)
{
__asm__ volatile (
"fnsave %0"
39,8 → 45,7
);
}
 
 
void fpu_context_restore(fpu_context_t *fctx)
static void fpu_context_f_restore(fpu_context_t *fctx)
{
__asm__ volatile (
"frstor %0"
48,9 → 53,64
);
}
 
static void fpu_context_fx_save(fpu_context_t *fctx)
{
__asm__ volatile (
"fxsave %0"
: "=m"(*fctx)
);
}
 
static void fpu_context_fx_restore(fpu_context_t *fctx)
{
__asm__ volatile (
"fxrstor %0"
: "=m"(*fctx)
);
}
 
/*
Setup using fxsr instruction
*/
void fpu_fxsr(void)
{
fpu_save=fpu_context_fx_save;
fpu_restore=fpu_context_fx_restore;
}
/*
Setup using not fxsr instruction
*/
void fpu_fsr(void)
{
fpu_save=fpu_context_f_save;
fpu_restore=fpu_context_f_restore;
}
 
 
 
void fpu_context_save(fpu_context_t *fctx)
{
fpu_save(fctx);
}
 
void fpu_context_restore(fpu_context_t *fctx)
{
fpu_restore(fctx);
}
 
 
 
void fpu_init()
{
__u32 help0=0,help1=0;
__asm__ volatile (
"fninit;"
"fninit;\n"
"stmxcsr %0\n"
"mov %0,%1;\n"
"or %2,%1;\n"
"mov %1,%0;\n"
"ldmxcsr %0;\n"
:"+m"(help0),"+r"(help1)
:"i"(0x1f80)
);
}