diff options
| author | PikalaxALT <pikalaxalt@gmail.com> | 2017-12-15 09:38:53 -0500 |
|---|---|---|
| committer | PikalaxALT <pikalaxalt@gmail.com> | 2017-12-15 09:39:34 -0500 |
| commit | f95a4a932476be2ba99e2fd081e8d2bc6ea12813 (patch) | |
| tree | 75f67192cb2d7b7b575c94edda318e475239b63c /newlib/libc/machine/sh/strcpy.S | |
| parent | f60aca96985e68c7d8a52eb7bc955fb80e132f73 (diff) | |
Import newlib and create makefile
Diffstat (limited to 'newlib/libc/machine/sh/strcpy.S')
| -rw-r--r-- | newlib/libc/machine/sh/strcpy.S | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/newlib/libc/machine/sh/strcpy.S b/newlib/libc/machine/sh/strcpy.S new file mode 100644 index 0000000..63aa7e7 --- /dev/null +++ b/newlib/libc/machine/sh/strcpy.S @@ -0,0 +1,41 @@ +! Entry: r4: destination +! r5: source +! Exit: r0: destination +! r1-r2,r5: clobbered + +#include "asm.h" + +ENTRY(strcpy) + mov r4,r0 + or r5,r0 + tst #3,r0 + SL(bf, L_setup_char_loop, mov r4,r0) + mov.l @r5+,r1 + mov #0,r2 + cmp/str r2,r1 + SL(bt, Longword_loop_end, sub r5,r0) + .align 2 +Longword_loop: + mov.l r1,@(r0,r5) + mov.l @r5+,r1 + cmp/str r2,r1 + bt Longword_loop_end + mov.l r1,@(r0,r5) + mov.l @r5+,r1 + cmp/str r2,r1 + bf Longword_loop +Longword_loop_end: + add #-4,r5 + add #3,r0 + .align 2 +L_char_loop: + mov.b @r5+,r1 +L_char_loop_start: + tst r1,r1 + SL(bf, L_char_loop, mov.b r1,@(r0,r5)) + rts + mov r4,r0 +L_setup_char_loop: + mov.b @r5+,r1 + bra L_char_loop_start + sub r5,r0 |