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jsauermann |
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<P><table class="ttop"><th class="tpre"><a href="33_Listing_of_make_mem.cc.html">Previous Lesson</a></th><th class="ttop"><a href="toc.html">Table of Content</a></th><th class="ttop"></th></table>
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<hr>
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<H1><A NAME="section_1">34 LISTING OF end_conv.cc</A></H1>
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<pre class="vhdl">
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1 #include "assert.h"
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2 #include "ctype.h"
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3 #include "stdio.h"
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4 #include "string.h"
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5
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6 //-----------------------------------------------------------------------------
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7 int
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8 main(int argc, const char * argv)
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9 {
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10 char buffer[2000];
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11 int pc, val, val2;
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12
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13 for (;;)
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14 {
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15 char * s = fgets(buffer, sizeof(buffer) - 2, stdin);
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16 if (s == 0) return 0;
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17
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18 // map lines ' xx:' and 'xxxxxxxx; to 2* the hex value.
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19 //
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20 if (
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21 (isxdigit(s[0]) || s[0] == ' ') &&
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22 (isxdigit(s[1]) || s[1] == ' ') &&
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23 (isxdigit(s[2]) || s[2] == ' ') &&
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24 isxdigit(s[3]) && s[4] == ':') // ' xx:'
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25 {
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26 assert(1 == sscanf(s, " %x:", &pc));
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27 if (pc & 1) printf("%4X+:", pc/2);
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28 else printf("%4X:", pc/2);
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29 s += 5;
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30 }
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31 else if (isxdigit(s[0]) && isxdigit(s[1]) && isxdigit(s[2]) &&
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32 isxdigit(s[3]) && isxdigit(s[4]) && isxdigit(s[5]) &&
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33 isxdigit(s[6]) && isxdigit(s[7])) // 'xxxxxxxx'
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34 {
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35 assert(1 == sscanf(s, "%x", &pc));
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36 if (pc & 1) printf("%8.8X+:", pc/2);
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37 else printf("%8.8X:", pc/2);
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38 s += 8;
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39 }
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40 else // other: copy verbatim
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41 {
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42 printf("%s", s);
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43 continue;
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44 }
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45
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46 while (isblank(*s)) printf("%c", *s++);
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47
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48 // endian swap.
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49 //
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50 while (isxdigit(s[0]) &&
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51 isxdigit(s[1]) &&
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52 s[2] == ' ' &&
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53 isxdigit(s[3]) &&
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54 isxdigit(s[4]) &&
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55 s[5] == ' ')
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56 {
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57 assert(2 == sscanf(s, "%x %x ", &val, &val2));
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58 printf("%2.2X%2.2X ", val2, val);
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59 s += 6;
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60 }
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61
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62 char * s1 = strstr(s, ".+");
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63 char * s2 = strstr(s, ".-");
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64 if (s1)
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65 {
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66 assert(1 == sscanf(s1 + 2, "%d", &val));
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67 assert((val & 1) == 0);
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68 sprintf(s1, " 0x%X", (pc + val)/2 + 1);
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69 printf(s);
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70 s = s1 + strlen(s1) + 1;
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71 }
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72 else if (s2)
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73 {
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74 assert(1 == sscanf(s2 + 2, "%d", &val));
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75 assert((val & 1) == 0);
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76 sprintf(s2, " 0x%X", (pc - val)/2 + 1);
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77 printf(s);
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78 s = s2 + strlen(s2) + 1;
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79 }
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80
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81 printf("%s", s);
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82 }
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83 }
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84 //-----------------------------------------------------------------------------
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<pre class="filename">
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tools/end_conv.cc
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</pre></pre>
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<P>
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<P><hr><BR>
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<table class="ttop"><th class="tpre"><a href="33_Listing_of_make_mem.cc.html">Previous Lesson</a></th><th class="ttop"><a href="toc.html">Table of Content</a></th><th class="ttop"></th></table>
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