arch/powerpc/math-emu/mtfsfi.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/types.h>
   3 #include <linux/errno.h>
   4 #include <linux/uaccess.h>
   5
   6 #include <asm/sfp-machine.h>
   7 #include <math-emu/soft-fp.h>
   8
   9 int
  10 mtfsfi(unsigned int crfD, unsigned int IMM)
  11 {
  12         u32 mask = 0xf;
  13
  14         if (!crfD)
  15                 mask = 9;
  16
  17         __FPU_FPSCR &= ~(mask << ((7 - crfD) << 2));
  18         __FPU_FPSCR |= (IMM & 0xf) << ((7 - crfD) << 2);
  19
  20 #ifdef DEBUG
  21         printk("%s: %d %x: %08lx\n", __func__, crfD, IMM, __FPU_FPSCR);
  22 #endif
  23
  24         return 0;
  25 }