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Sourcecode: linux version File versions

mtfsf.c

#include <linux/types.h>
#include <linux/errno.h>
#include <asm/uaccess.h>

#include "soft-fp.h"

int
mtfsf(unsigned int FM, u32 *frB)
{
      u32 mask;

      if (FM == 0)
            return 0;

      if (FM == 0xff)
            mask = 0x9fffffff;
      else {
            mask = 0;
            if (FM & (1 << 0))
                  mask |= 0x90000000;
            if (FM & (1 << 1))
                  mask |= 0x0f000000;
            if (FM & (1 << 2))
                  mask |= 0x00f00000;
            if (FM & (1 << 3))
                  mask |= 0x000f0000;
            if (FM & (1 << 4))
                  mask |= 0x0000f000;
            if (FM & (1 << 5))
                  mask |= 0x00000f00;
            if (FM & (1 << 6))
                  mask |= 0x000000f0;
            if (FM & (1 << 7))
                  mask |= 0x0000000f;
      }

      __FPU_FPSCR &= ~(mask);
      __FPU_FPSCR |= (frB[1] & mask);

#ifdef DEBUG
      printk("%s: %02x %p: %08lx\n", __func__, FM, frB, __FPU_FPSCR);
#endif

      return 0;
}

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