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[/] [or1k/] [trunk/] [newlib-1.10.0/] [newlib/] [libc/] [machine/] [h8300/] [reg_memcpy.S] - Blame information for rev 1007

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#include "defines.h"
 
#ifdef __H8300H__
        .h8300h
#endif
 
#ifdef __H8300S__
        .h8300s
#endif
 
 
        ; dst A0
        ; src A1
        ; len A2
        .global ___reg_memcpy
___reg_memcpy:
 
        MOVP    A0P,A3P ; keep copy of result
        ADDP    A2P,A0P ; point to end of dst
        ADDP    A2P,A1P ; point to end of src
        CMPP    A0P,A3P ; see if anything to do
        beq     quit
 
 
loop:   subs    #1,A1P          ; point to byte
        mov.b   @A1P,A2L        ; get byte
        mov.b   A2L,@-A0P       ; save byte
        CMPP    A0P,A3P         ; at the front again ?
        bne     loop
 
        ; return with A0 pointing to dst
quit:   rts
 

Line No.	Rev	Author	Line
1	1007	ivang	`#include "defines.h"`
2
3			`#ifdef __H8300H__`
4			`.h8300h`
5			`#endif`
6
7			`#ifdef __H8300S__`
8			`.h8300s`
9			`#endif`
10
11
12			`; dst A0`
13			`; src A1`
14			`; len A2`
15			`.global ___reg_memcpy`
16			`___reg_memcpy:`
17
18			`MOVP A0P,A3P ; keep copy of result`
19			`ADDP A2P,A0P ; point to end of dst`
20			`ADDP A2P,A1P ; point to end of src`
21			`CMPP A0P,A3P ; see if anything to do`
22			`beq quit`
23
24
25			`loop: subs #1,A1P ; point to byte`
26			`mov.b @A1P,A2L ; get byte`
27			`mov.b A2L,@-A0P ; save byte`
28			`CMPP A0P,A3P ; at the front again ?`
29			`bne loop`
30
31			`; return with A0 pointing to dst`
32			`quit: rts`
33

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[/] [or1k/] [trunk/] [newlib-1.10.0/] [newlib/] [libc/] [machine/] [h8300/] [reg_memcpy.S] - Blame information for rev 1007