git.rot13.org Git - goodfet/blob - firmware/apps/chipcon/chipconasm.S

   1 .globl ccdebuginit
   2 .type ccdebuginit,@function //for linking
   3
   4 #define _GNU_ASSEMBLER_
   5 #include "gfports.h"
   6
   7
   8 //In assembly for cycle-counting, not for efficiency.
   9 //
  10 ccdebuginit:
  11         nop                     ;1 cycle
  12         nop                     ;1 cycle
  13         nop                     ;1 cycle
  14         nop                     ;1 cycle
  15         nop                     ;1 cycle
  16         nop                     ;1 cycle
  17         nop                     ;1 cycle
  18         nop                     ;1 cycle
  19         nop                     ;1 cycle
  20         nop                     ;1 cycle
  21         nop                     ;1 cycle
  22         nop                     ;1 cycle
  23
  24         bis.b   #13,    &0x0031 ;5 cycles
  25         bic.b   #8,     &0x0031 ;4 cycles
  26         bic.b   #1,     &0x0031 ;4
  27         xor.b   #8,     &0x0031 ;4
  28         xor.b   #8,     &0x0031 ;4
  29         xor.b   #8,     &0x0031 ;4
  30 ;;      xor.b   #8,     &0x0031 ;4
  31         bis.b   #1,     &0x0031 ;4
  32         ret