strrchr.S 516 B

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  1. /*
  2. * linux/arch/arm/lib/strrchr.S
  3. *
  4. * Copyright (C) 1995-2000 Russell King
  5. *
  6. * This program is free software; you can redistribute it and/or modify
  7. * it under the terms of the GNU General Public License version 2 as
  8. * published by the Free Software Foundation.
  9. *
  10. * ASM optimised string functions
  11. */
  12. #include <linux/linkage.h>
  13. #include <asm/assembler.h>
  14. .text
  15. .align 5
  16. ENTRY(strrchr)
  17. mov r3, #0
  18. 1: ldrb r2, [r0], #1
  19. teq r2, r1
  20. subeq r3, r0, #1
  21. teq r2, #0
  22. bne 1b
  23. mov r0, r3
  24. mov pc, lr