arch/powerpc/math-emu/fctiwz.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 #include <math-emu/double.h>
   9
  10 int
  11 fctiwz(u32 *frD, void *frB)
  12 {
  13         FP_DECL_D(B);
  14         FP_DECL_EX;
  15         u32 fpscr;
  16         unsigned int r;
  17
  18         fpscr = __FPU_FPSCR;
  19         __FPU_FPSCR &= ~(3);
  20         __FPU_FPSCR |= FP_RND_ZERO;
  21
  22         FP_UNPACK_DP(B, frB);
  23         FP_TO_INT_D(r, B, 32, 1);
  24         frD[1] = r;
  25
  26         __FPU_FPSCR = fpscr;
  27
  28 #ifdef DEBUG
  29         printk("%s: D %p, B %p: ", __func__, frD, frB);
  30         dump_double(frD);
  31         printk("\n");
  32 #endif
  33
  34         return 0;
  35 }