xref: /freebsd/sys/contrib/ncsw/etc/memcpy.c (revision 7447ca0eb235974642312b9555caec00b57d8fc1)
1 /* Copyright (c) 2008-2011 Freescale Semiconductor, Inc.
2  * All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are met:
6  *     * Redistributions of source code must retain the above copyright
7  *       notice, this list of conditions and the following disclaimer.
8  *     * Redistributions in binary form must reproduce the above copyright
9  *       notice, this list of conditions and the following disclaimer in the
10  *       documentation and/or other materials provided with the distribution.
11  *     * Neither the name of Freescale Semiconductor nor the
12  *       names of its contributors may be used to endorse or promote products
13  *       derived from this software without specific prior written permission.
14  *
15  *
16  * ALTERNATIVELY, this software may be distributed under the terms of the
17  * GNU General Public License ("GPL") as published by the Free Software
18  * Foundation, either version 2 of that License or (at your option) any
19  * later version.
20  *
21  * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
22  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24  * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
25  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
27  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
28  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 
34 #include "std_ext.h"
35 #include "xx_ext.h"
36 #include "memcpy_ext.h"
37 
38 
39 #ifdef CORE_8BIT_ACCESS_ERRATA
40 static void MY_MY_WRITE_UINT8(uint8_t *addr, uint8_t val)
41 {
42     uint32_t newAddr, newVal;
43     newAddr = (uint32_t)addr & ~0x3L;
44     switch ((uint32_t)addr%4)
45     {
46     case (0):
47         newVal = GET_UINT32(*(uint32_t*)newAddr);
48         newVal = (newVal & 0x00ffffff) | (((uint32_t)val)<<24);
49         WRITE_UINT32(*(uint32_t*)newAddr, newVal);
50         break;
51     case (1):
52          newVal = GET_UINT32(*(uint32_t*)newAddr);
53         newVal = (newVal & 0xff00ffff) | (((uint32_t)val)<<16);
54         WRITE_UINT32(*(uint32_t*)newAddr, newVal);
55         break;
56     case (2):
57         newVal = GET_UINT32(*(uint32_t*)newAddr);
58         newVal = (newVal & 0xffff00ff) | (((uint32_t)val)<<8);
59         WRITE_UINT32(*(uint32_t*)newAddr, newVal);
60         break;
61     case (3):
62         newVal = GET_UINT32(*(uint32_t*)newAddr);
63         newVal = (newVal & 0xffffff00) | val;
64         WRITE_UINT32(*(uint32_t*)newAddr, newVal);
65         break;
66     }
67 }
68 
69 static uint8_t MY_MY_GET_UINT8(uint8_t *addr)
70 {
71     uint32_t newAddr, newVal=0;
72     newAddr = (uint32_t)addr & ~0x3L;
73     switch ((uint32_t)addr%4)
74     {
75     case (0):
76         newVal = GET_UINT32(*(uint32_t*)newAddr);
77         newVal = (newVal & 0xff000000)>>24;
78         break;
79     case (1):
80         newVal = GET_UINT32(*(uint32_t*)newAddr);
81         newVal = (newVal & 0x00ff0000)>>16;
82         break;
83     case (2):
84         newVal = GET_UINT32(*(uint32_t*)newAddr);
85         newVal = (newVal & 0x0000ff00)>>8;
86         break;
87     case (3):
88         newVal = GET_UINT32(*(uint32_t*)newAddr);
89         newVal = (newVal & 0x000000ff);
90         break;
91     }
92 
93     return (uint8_t)newVal;
94 }
95 
96 #define MY_WRITE_UINT8(addr,val) MY_MY_WRITE_UINT8(&addr,val)
97 #define MY_GET_UINT8(addr) MY_MY_GET_UINT8(&addr)
98 #else
99 #define MY_WRITE_UINT8 WRITE_UINT8
100 #define MY_GET_UINT8   GET_UINT8
101 #endif /* CORE_8BIT_ACCESS_ERRATA */
102 
103 
104 void * MemCpy32(void* pDst,void* pSrc, uint32_t size)
105 {
106     uint32_t leftAlign;
107     uint32_t rightAlign;
108     uint32_t lastWord;
109     uint32_t currWord;
110     uint32_t *p_Src32;
111     uint32_t *p_Dst32;
112     uint8_t  *p_Src8;
113     uint8_t  *p_Dst8;
114 
115     p_Src8 = (uint8_t*)(pSrc);
116     p_Dst8 = (uint8_t*)(pDst);
117     /* first copy byte by byte till the source first alignment
118      * this step is necessary to ensure we do not even try to access
119      * data which is before the source buffer, hence it is not ours.
120      */
121     while((PTR_TO_UINT(p_Src8) & 3) && size) /* (pSrc mod 4) > 0 and size > 0 */
122     {
123         *p_Dst8++ = *p_Src8++;
124         size--;
125     }
126 
127     /* align destination (possibly disaligning source)*/
128     while((PTR_TO_UINT(p_Dst8) & 3) && size) /* (pDst mod 4) > 0 and size > 0 */
129     {
130         *p_Dst8++ = *p_Src8++;
131         size--;
132     }
133 
134     /* dest is aligned and source is not necessarily aligned */
135     leftAlign = (uint32_t)((PTR_TO_UINT(p_Src8) & 3) << 3); /* leftAlign = (pSrc mod 4)*8 */
136     rightAlign = 32 - leftAlign;
137 
138 
139     if (leftAlign == 0)
140     {
141         /* source is also aligned */
142         p_Src32 = (uint32_t*)(p_Src8);
143         p_Dst32 = (uint32_t*)(p_Dst8);
144         while (size >> 2) /* size >= 4 */
145         {
146             *p_Dst32++ = *p_Src32++;
147             size -= 4;
148         }
149         p_Src8 = (uint8_t*)(p_Src32);
150         p_Dst8 = (uint8_t*)(p_Dst32);
151     }
152     else
153     {
154         /* source is not aligned (destination is aligned)*/
155         p_Src32 = (uint32_t*)(p_Src8 - (leftAlign >> 3));
156         p_Dst32 = (uint32_t*)(p_Dst8);
157         lastWord = *p_Src32++;
158         while(size >> 3) /* size >= 8 */
159         {
160             currWord = *p_Src32;
161             *p_Dst32 = (lastWord << leftAlign) | (currWord >> rightAlign);
162             lastWord = currWord;
163             p_Src32++;
164             p_Dst32++;
165             size -= 4;
166         }
167         p_Dst8 = (uint8_t*)(p_Dst32);
168         p_Src8 = (uint8_t*)(p_Src32) - 4 + (leftAlign >> 3);
169     }
170 
171     /* complete the left overs */
172     while (size--)
173         *p_Dst8++ = *p_Src8++;
174 
175     return pDst;
176 }
177 
178 void * IO2IOCpy32(void* pDst,void* pSrc, uint32_t size)
179 {
180     uint32_t leftAlign;
181     uint32_t rightAlign;
182     uint32_t lastWord;
183     uint32_t currWord;
184     uint32_t *p_Src32;
185     uint32_t *p_Dst32;
186     uint8_t  *p_Src8;
187     uint8_t  *p_Dst8;
188 
189     p_Src8 = (uint8_t*)(pSrc);
190     p_Dst8 = (uint8_t*)(pDst);
191     /* first copy byte by byte till the source first alignment
192      * this step is necessary to ensure we do not even try to access
193      * data which is before the source buffer, hence it is not ours.
194      */
195     while((PTR_TO_UINT(p_Src8) & 3) && size) /* (pSrc mod 4) > 0 and size > 0 */
196     {
197         MY_WRITE_UINT8(*p_Dst8, MY_GET_UINT8(*p_Src8));
198         p_Dst8++;p_Src8++;
199         size--;
200     }
201 
202     /* align destination (possibly disaligning source)*/
203     while((PTR_TO_UINT(p_Dst8) & 3) && size) /* (pDst mod 4) > 0 and size > 0 */
204     {
205         MY_WRITE_UINT8(*p_Dst8, MY_GET_UINT8(*p_Src8));
206         p_Dst8++;p_Src8++;
207         size--;
208     }
209 
210     /* dest is aligned and source is not necessarily aligned */
211     leftAlign = (uint32_t)((PTR_TO_UINT(p_Src8) & 3) << 3); /* leftAlign = (pSrc mod 4)*8 */
212     rightAlign = 32 - leftAlign;
213 
214     if (leftAlign == 0)
215     {
216         /* source is also aligned */
217         p_Src32 = (uint32_t*)(p_Src8);
218         p_Dst32 = (uint32_t*)(p_Dst8);
219         while (size >> 2) /* size >= 4 */
220         {
221             WRITE_UINT32(*p_Dst32, GET_UINT32(*p_Src32));
222             p_Dst32++;p_Src32++;
223             size -= 4;
224         }
225         p_Src8 = (uint8_t*)(p_Src32);
226         p_Dst8 = (uint8_t*)(p_Dst32);
227     }
228     else
229     {
230         /* source is not aligned (destination is aligned)*/
231         p_Src32 = (uint32_t*)(p_Src8 - (leftAlign >> 3));
232         p_Dst32 = (uint32_t*)(p_Dst8);
233         lastWord = GET_UINT32(*p_Src32);
234         p_Src32++;
235         while(size >> 3) /* size >= 8 */
236         {
237             currWord = GET_UINT32(*p_Src32);
238             WRITE_UINT32(*p_Dst32, (lastWord << leftAlign) | (currWord >> rightAlign));
239             lastWord = currWord;
240             p_Src32++;p_Dst32++;
241             size -= 4;
242         }
243         p_Dst8 = (uint8_t*)(p_Dst32);
244         p_Src8 = (uint8_t*)(p_Src32) - 4 + (leftAlign >> 3);
245     }
246 
247     /* complete the left overs */
248     while (size--)
249     {
250         MY_WRITE_UINT8(*p_Dst8, MY_GET_UINT8(*p_Src8));
251         p_Dst8++;p_Src8++;
252     }
253 
254     return pDst;
255 }
256 
257 void * Mem2IOCpy32(void* pDst,void* pSrc, uint32_t size)
258 {
259     uint32_t leftAlign;
260     uint32_t rightAlign;
261     uint32_t lastWord;
262     uint32_t currWord;
263     uint32_t *p_Src32;
264     uint32_t *p_Dst32;
265     uint8_t  *p_Src8;
266     uint8_t  *p_Dst8;
267 
268     p_Src8 = (uint8_t*)(pSrc);
269     p_Dst8 = (uint8_t*)(pDst);
270     /* first copy byte by byte till the source first alignment
271      * this step is necessary to ensure we do not even try to access
272      * data which is before the source buffer, hence it is not ours.
273      */
274     while((PTR_TO_UINT(p_Src8) & 3) && size) /* (pSrc mod 4) > 0 and size > 0 */
275     {
276         MY_WRITE_UINT8(*p_Dst8, *p_Src8);
277         p_Dst8++;p_Src8++;
278         size--;
279     }
280 
281     /* align destination (possibly disaligning source)*/
282     while((PTR_TO_UINT(p_Dst8) & 3) && size) /* (pDst mod 4) > 0 and size > 0 */
283     {
284         MY_WRITE_UINT8(*p_Dst8, *p_Src8);
285         p_Dst8++;p_Src8++;
286         size--;
287     }
288 
289     /* dest is aligned and source is not necessarily aligned */
290     leftAlign = (uint32_t)((PTR_TO_UINT(p_Src8) & 3) << 3); /* leftAlign = (pSrc mod 4)*8 */
291     rightAlign = 32 - leftAlign;
292 
293     if (leftAlign == 0)
294     {
295         /* source is also aligned */
296         p_Src32 = (uint32_t*)(p_Src8);
297         p_Dst32 = (uint32_t*)(p_Dst8);
298         while (size >> 2) /* size >= 4 */
299         {
300             WRITE_UINT32(*p_Dst32, *p_Src32);
301             p_Dst32++;p_Src32++;
302             size -= 4;
303         }
304         p_Src8 = (uint8_t*)(p_Src32);
305         p_Dst8 = (uint8_t*)(p_Dst32);
306     }
307     else
308     {
309         /* source is not aligned (destination is aligned)*/
310         p_Src32 = (uint32_t*)(p_Src8 - (leftAlign >> 3));
311         p_Dst32 = (uint32_t*)(p_Dst8);
312         lastWord = *p_Src32++;
313         while(size >> 3) /* size >= 8 */
314         {
315             currWord = *p_Src32;
316             WRITE_UINT32(*p_Dst32, (lastWord << leftAlign) | (currWord >> rightAlign));
317             lastWord = currWord;
318             p_Src32++;p_Dst32++;
319             size -= 4;
320         }
321         p_Dst8 = (uint8_t*)(p_Dst32);
322         p_Src8 = (uint8_t*)(p_Src32) - 4 + (leftAlign >> 3);
323     }
324 
325     /* complete the left overs */
326     while (size--)
327     {
328         MY_WRITE_UINT8(*p_Dst8, *p_Src8);
329         p_Dst8++;p_Src8++;
330     }
331 
332     return pDst;
333 }
334 
335 void * IO2MemCpy32(void* pDst,void* pSrc, uint32_t size)
336 {
337     uint32_t leftAlign;
338     uint32_t rightAlign;
339     uint32_t lastWord;
340     uint32_t currWord;
341     uint32_t *p_Src32;
342     uint32_t *p_Dst32;
343     uint8_t  *p_Src8;
344     uint8_t  *p_Dst8;
345 
346     p_Src8 = (uint8_t*)(pSrc);
347     p_Dst8 = (uint8_t*)(pDst);
348     /* first copy byte by byte till the source first alignment
349      * this step is necessary to ensure we do not even try to access
350      * data which is before the source buffer, hence it is not ours.
351      */
352     while((PTR_TO_UINT(p_Src8) & 3) && size) /* (pSrc mod 4) > 0 and size > 0 */
353     {
354         *p_Dst8 = MY_GET_UINT8(*p_Src8);
355         p_Dst8++;p_Src8++;
356         size--;
357     }
358 
359     /* align destination (possibly disaligning source)*/
360     while((PTR_TO_UINT(p_Dst8) & 3) && size) /* (pDst mod 4) > 0 and size > 0 */
361     {
362         *p_Dst8 = MY_GET_UINT8(*p_Src8);
363         p_Dst8++;p_Src8++;
364         size--;
365     }
366 
367     /* dest is aligned and source is not necessarily aligned */
368     leftAlign = (uint32_t)((PTR_TO_UINT(p_Src8) & 3) << 3); /* leftAlign = (pSrc mod 4)*8 */
369     rightAlign = 32 - leftAlign;
370 
371     if (leftAlign == 0)
372     {
373         /* source is also aligned */
374         p_Src32 = (uint32_t*)(p_Src8);
375         p_Dst32 = (uint32_t*)(p_Dst8);
376         while (size >> 2) /* size >= 4 */
377         {
378             *p_Dst32 = GET_UINT32(*p_Src32);
379             p_Dst32++;p_Src32++;
380             size -= 4;
381         }
382         p_Src8 = (uint8_t*)(p_Src32);
383         p_Dst8 = (uint8_t*)(p_Dst32);
384     }
385     else
386     {
387         /* source is not aligned (destination is aligned)*/
388         p_Src32 = (uint32_t*)(p_Src8 - (leftAlign >> 3));
389         p_Dst32 = (uint32_t*)(p_Dst8);
390         lastWord = GET_UINT32(*p_Src32);
391         p_Src32++;
392         while(size >> 3) /* size >= 8 */
393         {
394             currWord = GET_UINT32(*p_Src32);
395             *p_Dst32 = (lastWord << leftAlign) | (currWord >> rightAlign);
396             lastWord = currWord;
397             p_Src32++;p_Dst32++;
398             size -= 4;
399         }
400         p_Dst8 = (uint8_t*)(p_Dst32);
401         p_Src8 = (uint8_t*)(p_Src32) - 4 + (leftAlign >> 3);
402     }
403 
404     /* complete the left overs */
405     while (size--)
406     {
407         *p_Dst8 = MY_GET_UINT8(*p_Src8);
408         p_Dst8++;p_Src8++;
409     }
410 
411     return pDst;
412 }
413 
414 void * MemCpy64(void* pDst,void* pSrc, uint32_t size)
415 {
416     uint32_t leftAlign;
417     uint32_t rightAlign;
418     uint64_t lastWord;
419     uint64_t currWord;
420     uint64_t *pSrc64;
421     uint64_t *pDst64;
422     uint8_t  *p_Src8;
423     uint8_t  *p_Dst8;
424 
425     p_Src8 = (uint8_t*)(pSrc);
426     p_Dst8 = (uint8_t*)(pDst);
427     /* first copy byte by byte till the source first alignment
428      * this step is necessarily to ensure we do not even try to access
429      * data which is before the source buffer, hence it is not ours.
430      */
431     while((PTR_TO_UINT(p_Src8) & 7) && size) /* (pSrc mod 8) > 0 and size > 0 */
432     {
433         *p_Dst8++ = *p_Src8++;
434         size--;
435     }
436 
437     /* align destination (possibly disaligning source)*/
438     while((PTR_TO_UINT(p_Dst8) & 7) && size) /* (pDst mod 8) > 0 and size > 0 */
439     {
440         *p_Dst8++ = *p_Src8++;
441         size--;
442     }
443 
444     /* dest is aligned and source is not necessarily aligned */
445     leftAlign = (uint32_t)((PTR_TO_UINT(p_Src8) & 7) << 3); /* leftAlign = (pSrc mod 8)*8 */
446     rightAlign = 64 - leftAlign;
447 
448 
449     if (leftAlign == 0)
450     {
451         /* source is also aligned */
452         pSrc64 = (uint64_t*)(p_Src8);
453         pDst64 = (uint64_t*)(p_Dst8);
454         while (size >> 3) /* size >= 8 */
455         {
456             *pDst64++ = *pSrc64++;
457             size -= 8;
458         }
459         p_Src8 = (uint8_t*)(pSrc64);
460         p_Dst8 = (uint8_t*)(pDst64);
461     }
462     else
463     {
464         /* source is not aligned (destination is aligned)*/
465         pSrc64 = (uint64_t*)(p_Src8 - (leftAlign >> 3));
466         pDst64 = (uint64_t*)(p_Dst8);
467         lastWord = *pSrc64++;
468         while(size >> 4) /* size >= 16 */
469         {
470             currWord = *pSrc64;
471             *pDst64 = (lastWord << leftAlign) | (currWord >> rightAlign);
472             lastWord = currWord;
473             pSrc64++;
474             pDst64++;
475             size -= 8;
476         }
477         p_Dst8 = (uint8_t*)(pDst64);
478         p_Src8 = (uint8_t*)(pSrc64) - 8 + (leftAlign >> 3);
479     }
480 
481     /* complete the left overs */
482     while (size--)
483         *p_Dst8++ = *p_Src8++;
484 
485     return pDst;
486 }
487 
488 void * MemSet32(void* pDst, uint8_t val, uint32_t size)
489 {
490     uint32_t val32;
491     uint32_t *p_Dst32;
492     uint8_t  *p_Dst8;
493 
494     p_Dst8 = (uint8_t*)(pDst);
495 
496     /* generate four 8-bit val's in 32-bit container */
497     val32  = (uint32_t) val;
498     val32 |= (val32 <<  8);
499     val32 |= (val32 << 16);
500 
501     /* align destination to 32 */
502     while((PTR_TO_UINT(p_Dst8) & 3) && size) /* (pDst mod 4) > 0 and size > 0 */
503     {
504         *p_Dst8++ = val;
505         size--;
506     }
507 
508     /* 32-bit chunks */
509     p_Dst32 = (uint32_t*)(p_Dst8);
510     while (size >> 2) /* size >= 4 */
511     {
512         *p_Dst32++ = val32;
513         size -= 4;
514     }
515 
516     /* complete the leftovers */
517     p_Dst8 = (uint8_t*)(p_Dst32);
518     while (size--)
519         *p_Dst8++ = val;
520 
521     return pDst;
522 }
523 
524 void * IOMemSet32(void* pDst, uint8_t val, uint32_t size)
525 {
526     uint32_t val32;
527     uint32_t *p_Dst32;
528     uint8_t  *p_Dst8;
529 
530     p_Dst8 = (uint8_t*)(pDst);
531 
532     /* generate four 8-bit val's in 32-bit container */
533     val32  = (uint32_t) val;
534     val32 |= (val32 <<  8);
535     val32 |= (val32 << 16);
536 
537     /* align destination to 32 */
538     while((PTR_TO_UINT(p_Dst8) & 3) && size) /* (pDst mod 4) > 0 and size > 0 */
539     {
540         MY_WRITE_UINT8(*p_Dst8, val);
541         p_Dst8++;
542         size--;
543     }
544 
545     /* 32-bit chunks */
546     p_Dst32 = (uint32_t*)(p_Dst8);
547     while (size >> 2) /* size >= 4 */
548     {
549         WRITE_UINT32(*p_Dst32, val32);
550         p_Dst32++;
551         size -= 4;
552     }
553 
554     /* complete the leftovers */
555     p_Dst8 = (uint8_t*)(p_Dst32);
556     while (size--)
557     {
558         MY_WRITE_UINT8(*p_Dst8, val);
559         p_Dst8++;
560     }
561 
562     return pDst;
563 }
564 
565 void * MemSet64(void* pDst, uint8_t val, uint32_t size)
566 {
567     uint64_t val64;
568     uint64_t *pDst64;
569     uint8_t  *p_Dst8;
570 
571     p_Dst8 = (uint8_t*)(pDst);
572 
573     /* generate four 8-bit val's in 32-bit container */
574     val64  = (uint64_t) val;
575     val64 |= (val64 <<  8);
576     val64 |= (val64 << 16);
577     val64 |= (val64 << 24);
578     val64 |= (val64 << 32);
579 
580     /* align destination to 64 */
581     while((PTR_TO_UINT(p_Dst8) & 7) && size) /* (pDst mod 8) > 0 and size > 0 */
582     {
583         *p_Dst8++ = val;
584         size--;
585     }
586 
587     /* 64-bit chunks */
588     pDst64 = (uint64_t*)(p_Dst8);
589     while (size >> 4) /* size >= 8 */
590     {
591         *pDst64++ = val64;
592         size -= 8;
593     }
594 
595     /* complete the leftovers */
596     p_Dst8 = (uint8_t*)(pDst64);
597     while (size--)
598         *p_Dst8++ = val;
599 
600     return pDst;
601 }
602 
603 void MemDisp(uint8_t *p, int size)
604 {
605     uint32_t    space = (uint32_t)(PTR_TO_UINT(p) & 0x3);
606     uint8_t     *p_Limit;
607 
608     if (space)
609     {
610         p_Limit = (p - space + 4);
611 
612         XX_Print("0x%08X: ", (p - space));
613 
614         while (space--)
615         {
616             XX_Print("--");
617         }
618         while (size  && (p < p_Limit))
619         {
620             XX_Print("%02x", *(uint8_t*)p);
621             size--;
622             p++;
623         }
624 
625         XX_Print(" ");
626         p_Limit += 12;
627 
628         while ((size > 3) && (p < p_Limit))
629         {
630             XX_Print("%08x ", *(uint32_t*)p);
631             size -= 4;
632             p += 4;
633         }
634         XX_Print("\r\n");
635     }
636 
637     while (size > 15)
638     {
639         XX_Print("0x%08X: %08x %08x %08x %08x\r\n",
640                  p, *(uint32_t *)p, *(uint32_t *)(p + 4),
641                  *(uint32_t *)(p + 8), *(uint32_t *)(p + 12));
642         size -= 16;
643         p += 16;
644     }
645 
646     if (size)
647     {
648         XX_Print("0x%08X: ", p);
649 
650         while (size > 3)
651         {
652             XX_Print("%08x ", *(uint32_t *)p);
653             size -= 4;
654             p += 4;
655         }
656         while (size)
657         {
658             XX_Print("%02x", *(uint8_t *)p);
659             size--;
660             p++;
661         }
662 
663         XX_Print("\r\n");
664     }
665 }
666