From 8a0efa53e44919bcf5ccb1d3353618a82afdf8bc Mon Sep 17 00:00:00 2001 From: Christopher Faylor Date: Thu, 17 Feb 2000 19:39:52 +0000 Subject: import newlib-2000-02-17 snapshot --- newlib/libc/machine/sh/strcmp.S | 66 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 newlib/libc/machine/sh/strcmp.S (limited to 'newlib/libc/machine/sh/strcmp.S') diff --git a/newlib/libc/machine/sh/strcmp.S b/newlib/libc/machine/sh/strcmp.S new file mode 100644 index 000000000..a112b13e0 --- /dev/null +++ b/newlib/libc/machine/sh/strcmp.S @@ -0,0 +1,66 @@ +! Entry: r4: destination +! r5: source +! Exit: r0: result +! r1-r2,r4-r5: clobbered + +#include "asm.h" + +ENTRY(strcmp) + mov r4,r0 + or r5,r0 + tst #3,r0 + bf L_setup_char_loop + mov #0,r0 +#ifdef DELAYED_BRANCHES + mov.l @r4+,r1 + .align 2 +Longword_loop: + mov.l @r5+,r2 + cmp/str r0,r1 + bt Longword_loop_end + cmp/eq r1,r2 + bt.s Longword_loop + mov.l @r4+,r1 + add #-4, r4 +Longword_loop_end: + add #-4, r4 + add #-4, r5 +L_setup_char_loop: + mov.b @r4+,r0 + .align 2 +L_char_loop: + mov.b @r5+,r1 + tst r0,r0 + bt L_return + cmp/eq r0,r1 + bt.s L_char_loop + mov.b @r4+,r0 + add #-2,r4 + mov.b @r4,r0 +#else /* ! DELAYED_BRANCHES */ + .align 2 +Longword_loop: + mov.l @r4+,r1 + mov.l @r5+,r2 + cmp/str r0,r1 + bt Longword_loop_end + cmp/eq r1,r2 + bt Longword_loop +Longword_loop_end: + add #-4, r4 + add #-4, r5 + .align 2 +L_setup_char_loop: +L_char_loop: + mov.b @r4+,r0 + mov.b @r5+,r1 + tst r0,r0 + bt L_return + cmp/eq r0,r1 + bt L_char_loop +#endif +L_return: + extu.b r0,r0 + extu.b r1,r1 + rts + sub r1,r0 -- cgit v1.2.3