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| author | Joern Rennecke <joern.rennecke@embecosm.com> | 2002-06-24 20:30:08 +0000 |
|---|---|---|
| committer | Joern Rennecke <joern.rennecke@embecosm.com> | 2002-06-24 20:30:08 +0000 |
| commit | e08a611849d98d2823057994190e97d1d2b4a261 (patch) | |
| tree | dccbcf280a2d2d0f5e59f110c9c6a61cb4e725df /newlib/libc/machine/sh/strlen.S | |
| parent | a5dadf33f9a936741f21b67052761ae1ab0eca73 (diff) | |
| download | newlib-e08a611849d98d2823057994190e97d1d2b4a261.zip newlib-e08a611849d98d2823057994190e97d1d2b4a261.tar.gz newlib-e08a611849d98d2823057994190e97d1d2b4a261.tar.bz2 | |
* libc/machine/sh/strcpy.S: New file.
* libc/machine/sh/Makefile.am (lib_a_SOURCES): Add rule for it.
* libc/machine/sh/Makefile.am: Regenerate.
Diffstat (limited to 'newlib/libc/machine/sh/strlen.S')
| -rw-r--r-- | newlib/libc/machine/sh/strlen.S | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/newlib/libc/machine/sh/strlen.S b/newlib/libc/machine/sh/strlen.S new file mode 100644 index 0000000..b55b86b --- /dev/null +++ b/newlib/libc/machine/sh/strlen.S @@ -0,0 +1,87 @@ +! Entry: arg0: string start address +! Exit: result: length +! +! Copyright 2002 SuperH Ltd. + +#include "asm.h" + +ENTRY(strlen) + +#if __SHMEDIA__ + + ldlo.q r2,0,r3 + ptabs/l r18,tr0 + pta/l loop,tr1 + andi r2,-8,r0 + shlli r2,3,r1 + mcmpeq.b r3,r63,r3 + SHHI r3,r1,r4 + beqi/u r4,0,tr1 // loop +#ifdef __LITTLE_ENDIAN__ + movi -1,r2 + addi r3,-1,r4 + msad.ubq r3,r4,r2 +#else + shlri r3,1,r3 + nsb r3,r3 + shlri r3,3,r2 +#endif + blink tr0,r63 + +loop: + ldlo.q r0,8,r3 + addi r0,8,r0 + ldlo.q r0,8,r63 + mcmpeq.b r3,r63,r3 + beqi/l r3,0,tr1 // loop + sub r0,r2,r2 +#ifdef __LITTLE_ENDIAN__ + addi r3,-1,r4 + addi r2,-1,r2 + msad.ubq r3,r4,r2 +#else + shlri r3,1,r3 + nsb r3,r3 + shlri r3,3,r3 + add r2,r3,r2 +#endif + blink tr0,r63 + +#else /* ! __SHMEDIA__, i.e. SH 1..4 / SHcompact */ + +#ifdef __SH5__ +#define STR_INIT r2 +#define STR_ORIG r0 +#define STR_COPY STR_ORIG +#define MASK r1 +#define TMP r3 +#define RESULT r2 +! r0,r1,r3: clobbered +#else +#define STR_INIT r4 +#define STR_ORIG STR_INIT +#define STR_COPY STR +#define MASK r1 +#define TMP r3 +#define RESULT r0 +! r1,r3: clobbered +#endif +#define STR RESULT + + mov #3,MASK + and STR_INIT,MASK + tst MASK,MASK + SL(bf, L_char_loop, mov STR_INIT, STR_COPY) +L_word_loop: + mov.l @STR+,TMP + cmp/str MASK,TMP + bf L_word_loop + add #-4,STR +L_char_loop: + mov.b @STR+,TMP + tst TMP,TMP + bf L_char_loop + add #-1,STR + rts + sub STR_ORIG,STR +#endif /* ! __SHMEDIA__ */ |