arch/sh/lib/div64.S

   1 /*
   2  * unsigned long __xdiv64_32(unsigned long long n, unsigned long d);
   3  */
   4
   5 #include <linux/linkage.h>
   6
   7 .text
   8 ENTRY(__xdiv64_32)
   9 #ifdef CONFIG_CPU_LITTLE_ENDIAN
  10         mov     r4, r0
  11         mov     r5, r1
  12 #else
  13         mov     r4, r1
  14         mov     r5, r0
  15 #endif
  16         cmp/hs  r6, r1
  17         bf.s    1f
  18          mov    #0, r2
  19
  20         mov     r1, r2
  21         mov     #0, r3
  22         div0u
  23         .rept   32
  24         rotcl   r2
  25         div1    r6, r3
  26         .endr
  27         rotcl   r2
  28         mul.l   r6, r2
  29         sts     macl, r3
  30         sub     r3, r1
  31 1:
  32         div0u
  33         .rept   32
  34         rotcl   r0
  35         div1    r6, r1
  36         .endr
  37 #ifdef CONFIG_CPU_LITTLE_ENDIAN
  38         mov     r2, r1
  39         rts
  40          rotcl  r0
  41 #else
  42         rotcl   r0
  43         mov     r0, r1
  44         rts
  45          mov    r2, r0
  46 #endif