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kernel/linux-imx6_3.14.28/arch/powerpc/math-emu/fmuls.c 1014 Bytes
6b13f685e   김민수   BSP 최초 추가
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  #include <linux/types.h>
  #include <linux/errno.h>
  #include <asm/uaccess.h>
  
  #include <asm/sfp-machine.h>
  #include <math-emu/soft-fp.h>
  #include <math-emu/double.h>
  #include <math-emu/single.h>
  
  int
  fmuls(void *frD, void *frA, void *frB)
  {
  	FP_DECL_D(A);
  	FP_DECL_D(B);
  	FP_DECL_D(R);
  	FP_DECL_EX;
  
  #ifdef DEBUG
  	printk("%s: %p %p %p
  ", __func__, frD, frA, frB);
  #endif
  
  	FP_UNPACK_DP(A, frA);
  	FP_UNPACK_DP(B, frB);
  
  #ifdef DEBUG
  	printk("A: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]
  ",
  	       A_s, A_f1, A_f0, A_e, A_c, A_f1, A_f0, A_e + 1023);
  	printk("B: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]
  ",
  	       B_s, B_f1, B_f0, B_e, B_c, B_f1, B_f0, B_e + 1023);
  #endif
  
  	if ((A_c == FP_CLS_INF && B_c == FP_CLS_ZERO) ||
  	    (A_c == FP_CLS_ZERO && B_c == FP_CLS_INF))
  		FP_SET_EXCEPTION(EFLAG_VXIMZ);
  
  	FP_MUL_D(R, A, B);
  
  #ifdef DEBUG
  	printk("D: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]
  ",
  	       R_s, R_f1, R_f0, R_e, R_c, R_f1, R_f0, R_e + 1023);
  #endif
  
  	__FP_PACK_DS(frD, R);
  
  	return FP_CUR_EXCEPTIONS;
  }