diff options
Diffstat (limited to 'newlib/libc/machine/h8300/memset.S')
| -rw-r--r-- | newlib/libc/machine/h8300/memset.S | 63 |
1 files changed, 6 insertions, 57 deletions
diff --git a/newlib/libc/machine/h8300/memset.S b/newlib/libc/machine/h8300/memset.S index c92169c69..c12f17b4e 100644 --- a/newlib/libc/machine/h8300/memset.S +++ b/newlib/libc/machine/h8300/memset.S @@ -1,63 +1,13 @@ -#include "setarch.h" - #include "defines.h" -#if defined (__H8300SX__) - - .global _memset -_memset: - ; Use er3 is a temporary since er0 must remain unchanged on exit. - mov.l er0,er3 - - ; Fill er1 with the byte to copy. - mov.b r1l,r1h - mov.w r1,e1 - - ; Account for any excess bytes and words that will be copied after - ; the main loop. r2 >= 0 if there is a longword to copy. - sub #4,LEN(r2) - blo longs_done - - ; Copy one byte if doing so will make er3 word-aligned. - ; This isn't needed for correctness but it makes the main loop - ; slightly faster. - bld #0,r3l - bcc word_aligned - mov.b r1l,@er3+ - sub #1,LEN(r2) - blo longs_done - -word_aligned: - ; Likewise one word for longword alignment. - bld #1,r3l - bcc long_copy - mov.w r1,@er3+ - sub #2,LEN(r2) - blo longs_done - -long_copy: - ; Copy longwords. - mov.l er1,@er3+ - sub #4,LEN(r2) - bhs long_copy - -longs_done: - ; At this point, we need to copy r2 & 3 bytes. Copy a word - ; if necessary. - bld #1,r2l - bcc words_done - mov.w r1,@er3+ - -words_done: - ; Copy a byte. - bld #0,r2l - bcc bytes_done - mov.b r1l,@er3+ +#ifdef __H8300H__ + .h8300h +#endif -bytes_done: - rts +#ifdef __H8300S__ + .h8300s +#endif -#else ; A0P pointer to cursor ; A1P thing to copy @@ -99,4 +49,3 @@ byteloop: bne byteloop rts -#endif |