| 26 |
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 27 |
POSSIBILITY OF SUCH DAMAGE. */ |
POSSIBILITY OF SUCH DAMAGE. */ |
| 28 |
|
|
| 29 |
|
/* $Id$ */ |
| 30 |
|
|
| 31 |
#include "macros.inc" |
#include "macros.inc" |
| 32 |
|
|
| 33 |
#define dest_hi r25 |
#define dest_hi r25 |
| 57 |
; otherwise memcpy will do the right thing |
; otherwise memcpy will do the right thing |
| 58 |
cp src_lo, dest_lo |
cp src_lo, dest_lo |
| 59 |
cpc src_hi, dest_hi |
cpc src_hi, dest_hi |
| 60 |
brcc .memmove_fwd |
brcc .L_memmove_fwd |
| 61 |
LOAD_Z(src_lo, src_hi) |
X_movw ZL, src_lo |
| 62 |
LOAD_X(dest_lo, dest_hi) |
X_movw XL, dest_lo |
| 63 |
add ZL, len_lo |
add ZL, len_lo |
| 64 |
adc ZH, len_hi |
adc ZH, len_hi |
| 65 |
add XL, len_lo |
add XL, len_lo |
| 66 |
adc XH, len_hi |
adc XH, len_hi |
| 67 |
rjmp .memmove_start |
rjmp .L_memmove_start |
| 68 |
.memmove_loop: |
.L_memmove_loop: |
| 69 |
ld __tmp_reg__, -Z |
ld __tmp_reg__, -Z |
| 70 |
st -X, __tmp_reg__ |
st -X, __tmp_reg__ |
| 71 |
.memmove_start: |
.L_memmove_start: |
| 72 |
subi len_lo, lo8(1) |
subi len_lo, lo8(1) |
| 73 |
sbci len_hi, hi8(1) |
sbci len_hi, hi8(1) |
| 74 |
brcc .memmove_loop |
brcc .L_memmove_loop |
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; return dest (unchanged) |
; return dest (unchanged) |
| 76 |
ret |
ret |
| 77 |
.memmove_fwd: |
.L_memmove_fwd: |
| 78 |
XJMP _U(memcpy) |
XJMP _U(memcpy) |
| 79 |
.memmove_end: |
.L_memmove_end: |
| 80 |
.size _U(memmove), .memmove_end - _U(memmove) |
.size _U(memmove), .L_memmove_end - _U(memmove) |
| 81 |
|
|
| 82 |
#endif /* not __DOXYGEN__ */ |
#endif /* not __DOXYGEN__ */ |