arch/arm-all/arm-aeabi/idivmod.S

   1                         .text
   2                         .align 2
   3                         .globl __aeabi_idiv
   4                         .globl __aeabi_idivmod
   5 __aeabi_idiv:
   6                         subs    r2, r1, #0
   7                         bxeq    lr              /* div/0 !*/
   8
   9                         eor     ip, r1, r0
  10
  11                         rsbmi   r2, r2, #0
  12
  13                         movs    r1, r0
  14
  15                         rsbmi   r1, r1, #0
  16
  17                         cmp     r2, r0
  18                         movhi   r1, r0
  19                         movhi   r0, #0
  20                         bxhi    lr
  21
  22                         clz     r3, r1
  23                         clz     r0, r2
  24                         rsb     r0, r3, r0
  25                         mov     r3, #1
  26                         mov     r2, r2, asl r0
  27                         mov     r3, r3, asl r0
  28                         mov     r0, #0
  29 1:
  30                         cmp     r1, r2
  31                         rsbcs   r1, r2, r1
  32                         orrcs   r0, r0, r3
  33                         movs    r3, r3, lsr #1
  34                         mov     r2, r2, lsr #1
  35                         bne     1b
  36
  37                         cmp     ip, #0
  38                         rsbmi   r0, r0, #0
  39
  40                         bx lr
  41
  42 __aeabi_idivmod:        stmfd   sp!,{r0, r1, ip, lr}
  43                         bl      __aeabi_idiv
  44                         ldmfd   sp!,{r1, r2, ip, lr}
  45                         mul     r3, r0, r2
  46                         sub     r1, r1, r3
  47                         bx      lr
  48