release/src-rt-6.x.4708/linux/linux-2.6.36/arch/powerpc/math-emu/mtfsfi.c

   1 #include <linux/types.h>
   2 #include <linux/errno.h>
   3 #include <asm/uaccess.h>
   4
   5 #include <asm/sfp-machine.h>
   6 #include <math-emu/soft-fp.h>
   7
   8 int
   9 mtfsfi(unsigned int crfD, unsigned int IMM)
  10 {
  11         u32 mask = 0xf;
  12
  13         if (!crfD)
  14                 mask = 9;
  15
  16         __FPU_FPSCR &= ~(mask << ((7 - crfD) << 2));
  17         __FPU_FPSCR |= (IMM & 0xf) << ((7 - crfD) << 2);
  18
  19 #ifdef DEBUG
  20         printk("%s: %d %x: %08lx\n", __func__, crfD, IMM, __FPU_FPSCR);
  21 #endif
  22
  23         return 0;
  24 }