Changeset cc8cb3093a2c3f411f5312b929e7df6e9785ba00

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Commiter: Charles Childers

Author: Charles Childers

Parent: f35805c2c5

(2010/03/09 00:13) Almost 2 years ago

sdl vm disallows negative addresses

Affected files

Updated vm/graphical/vm.c Download diff

f35805c2c56c0dc7b89bf5c8b341f450093fa7c9cc8cb3093a2c3f411f5312b929e7df6e9785ba00
122
         vm.rsp++;
122
         vm.rsp++;
123
         TORS = vm.ip;
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         TORS = vm.ip;
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         vm.ip = vm.image[vm.ip] - 1;
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         vm.ip = vm.image[vm.ip] - 1;
 
125
         if (vm.image[vm.ip+1] == 0)
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         if (vm.ip < 0)
 
126
         {
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         {
 
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           vm.ip++;
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           vm.ip = IMAGE_SIZE;
 
128
         }
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         }
 
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         if (vm.image[vm.ip+1] == 0)
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         else
 
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         {
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         {
 
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           vm.ip++;
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           if (vm.image[vm.ip+1] == 0)
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             vm.ip++;



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           if (vm.image[vm.ip+1] == 0)



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             vm.ip++;



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         }
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         }



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         break;
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         break;



134
137


...
...
139
    case VM_JUMP:
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    case VM_JUMP:



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         vm.ip++;
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         vm.ip++;



141
         vm.ip = vm.image[vm.ip] - 1;
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         vm.ip = vm.image[vm.ip] - 1;



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#ifdef EXPERIMENTAL
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         if (vm.ip < 0)



143
         if (vm.image[vm.ip+1] == 0)



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         {
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         {



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           vm.ip++;
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           vm.ip = IMAGE_SIZE;



146
         }
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         }



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         if (vm.image[vm.ip+1] == 0)
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         else



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         {
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         {



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           vm.ip++;
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           if (vm.image[vm.ip+1] == 0)



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             vm.ip++;



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           if (vm.image[vm.ip+1] == 0)



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             vm.ip++;



150
         }
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         }



151
#endif



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         break;
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         break;



153
157



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    /***************************************************/
158
    /***************************************************/


...
...
371
         vm.rsp++;
375
         vm.rsp++;



372
         TORS = vm.ip;
376
         TORS = vm.ip;



373
         vm.ip = vm.image[vm.ip] - 1;
377
         vm.ip = vm.image[vm.ip] - 1;



374
         if (vm.image[vm.ip+1] == 0)
378
         if (vm.ip < 0)



375
         {
379
         {



376
           vm.ip++;
380
           vm.ip = IMAGE_SIZE;



377
         }
381
         }



378
         if (vm.image[vm.ip+1] == 0)
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         else



379
         {
383
         {



380
           vm.ip++;
384
           if (vm.image[vm.ip+1] == 0)



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             vm.ip++;



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           if (vm.image[vm.ip+1] == 0)



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             vm.ip++;



381
         }
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         }



382
         break;
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         break;



383
  }
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  }