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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 |
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POSSIBILITY OF SUCH DAMAGE. */ |
POSSIBILITY OF SUCH DAMAGE. */ |
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/* $Id$ */ |
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#include "macros.inc" |
#include "macros.inc" |
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#define src_hi r25 |
#define src_hi r25 |
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.global _U(strchr) |
.global _U(strchr) |
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.type _U(strchr), @function |
.type _U(strchr), @function |
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_U(strchr): |
_U(strchr): |
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LOAD_Z(src_lo, src_hi) |
X_movw ZL, src_lo |
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.strchr_loop: |
.L_strchr_loop: |
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ld __tmp_reg__, Z+ |
ld __tmp_reg__, Z+ |
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cp __tmp_reg__, val_lo |
cp __tmp_reg__, val_lo |
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breq .strchr_found |
breq .L_strchr_found |
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tst __tmp_reg__ |
tst __tmp_reg__ |
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brne .strchr_loop |
brne .L_strchr_loop |
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; not found, return NULL pointer |
; not found, return NULL pointer |
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clr ret_lo |
clr ret_lo |
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clr ret_hi |
clr ret_hi |
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ret |
ret |
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.strchr_found: |
.L_strchr_found: |
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sbiw ZL, 1 ; undo post-increment |
sbiw ZL, 1 ; undo post-increment |
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mov ret_lo, ZL ; XXX use movw if available |
X_movw ret_lo, ZL |
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mov ret_hi, ZH |
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ret |
ret |
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.strchr_end: |
.L_strchr_end: |
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.size _U(strchr), .strchr_end - _U(strchr) |
.size _U(strchr), .L_strchr_end - _U(strchr) |
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#endif /* not __DOXYGEN__ */ |
#endif /* not __DOXYGEN__ */ |