diff options
Diffstat (limited to 'newlib/libc/machine/h8300/strcmp.S')
| -rw-r--r-- | newlib/libc/machine/h8300/strcmp.S | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/newlib/libc/machine/h8300/strcmp.S b/newlib/libc/machine/h8300/strcmp.S new file mode 100644 index 0000000..8dec7c0 --- /dev/null +++ b/newlib/libc/machine/h8300/strcmp.S @@ -0,0 +1,45 @@ +#include "defines.h" + +#ifdef __H8300H__ + .h8300h +#endif + +#ifdef __H8300S__ + .h8300s +#endif + + .section .text + .align 2 + .global _strcmp +_strcmp: + MOVP A0P,A2P + MOVP A1P,A3P +.L5: + mov.b @A2P+,A1L + beq .L3 + mov.b @A3P+,A0L + cmp.b A0L,A1L + beq .L5 + subs #1,A3P +.L3: + mov.b @(-1,A2P),A0L + mov.b @A3P,A1L + sub.b A1L,A0L + ; We have to sign extend the result to 32bits just in case + ; we are using 32bit integers. +#ifdef __H8300H__ + exts.w r0 + exts.l er0 +#else +#ifdef __H8300S__ + exts.w r0 + exts.l er0 +#else + bld #7,r0l + subx r0h,r0h + subx r1l,r1l + subx r1h,r1h +#endif +#endif + rts + .end |