Mercurial > vba-linux

     1 // VisualBoyAdvance - Nintendo Gameboy/GameboyAdvance (TM) emulator.

     2 // Copyright (C) 1999-2003 Forgotten

     3 // Copyright (C) 2004 Forgotten and the VBA development team

     4 

     5 // This program is free software; you can redistribute it and/or modify

     6 // it under the terms of the GNU General Public License as published by

     7 // the Free Software Foundation; either version 2, or(at your option)

     8 // any later version.

     9 //

    10 // This program is distributed in the hope that it will be useful,

    11 // but WITHOUT ANY WARRANTY; without even the implied warranty of

    12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    13 // GNU General Public License for more details.

    14 //

    15 // You should have received a copy of the GNU General Public License

    16 // along with this program; if not, write to the Free Software Foundation,

    17 // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

    18 

    19 #include <string.h>

    20 #include <stdio.h>

    21 #include <stdlib.h>

    22 

    23 #include "Port.h"

    24 #include "gba/GBAGlobals.h"

    25 #include "gba/elf.h"

    26 #include "exprNode.h"

    27 

    28 extern char *yytext;

    29 

    30 #define debuggerReadMemory(addr) \

    31   READ32LE((&map[(addr)>>24].address[(addr) & map[(addr)>>24].mask]))

    32 

    33 void *exprNodeCleanUpList[100];

    34 int exprNodeCleanUpCount = 0;

    35 Type exprNodeType = { 0, TYPE_base, "int", DW_ATE_signed, 4, 0, {0}, 0 };

    36 

    37 void exprNodeClean(void *m)

    38 {

    39   exprNodeCleanUpList[exprNodeCleanUpCount++] = m;

    40 }

    41 

    42 void exprNodeCleanUp()

    43 {

    44   for(int i = 0; i < exprNodeCleanUpCount; i++) {

    45     free(exprNodeCleanUpList[i]);

    46   }

    47   exprNodeCleanUpCount = 0;

    48 }

    49 

    50 Node *exprNodeIdentifier()

    51 {

    52   Node *n = (Node *)calloc(1, sizeof(Node));

    53   n->name = strdup(yytext);

    54 

    55   exprNodeClean(n->name);  

    56   exprNodeClean(n);

    57   

    58   n->print = exprNodeIdentifierPrint;

    59   n->resolve = exprNodeIdentifierResolve;

    60   return n;

    61 }

    62 

    63 bool exprNodeIdentifierResolve(Node *n, Function *f, CompileUnit *u)

    64 {

    65   Object *o;

    66   if(elfGetObject(n->name, f, u, &o)) {

    67     n->type = o->type;

    68     n->location = elfDecodeLocation(f, o->location, &n->locType);

    69     return true;

    70   } else {

    71     printf("Object %s not found\n", n->name);

    72   }

    73   return false;

    74 }

    75 

    76 void exprNodeIdentifierPrint(Node *n)

    77 {

    78   printf("%s", n->name);

    79 }

    80 

    81 Node *exprNodeNumber()

    82 {

    83   Node *n = (Node *)calloc(1, sizeof(Node));

    84 

    85   exprNodeClean(n);

    86   n->location = atoi(yytext);

    87   n->type = &exprNodeType;

    88   n->locType = LOCATION_value;  

    89   n->print = exprNodeNumberPrint;

    90   n->resolve = exprNodeNumberResolve;

    91   return n;

    92 }

    93 

    94 bool exprNodeNumberResolve(Node *n, Function *f, CompileUnit *u)

    95 {

    96   return true;

    97 }

    98 

    99 void exprNodeNumberPrint(Node *n)

   100 {

   101   printf("%d", n->location);

   102 }

   103 

   104 Node *exprNodeStar(Node *exp)

   105 {

   106   Node *n = (Node *)calloc(1, sizeof(Node));

   107   exprNodeClean(n);

   108   

   109   n->expression = exp;

   110   

   111   n->print = exprNodeStarPrint;

   112   n->resolve = exprNodeStarResolve;

   113   return n;

   114 }

   115 

   116 bool exprNodeStarResolve(Node *n, Function *f, CompileUnit *u)

   117 {

   118   if(n->expression->resolve(n->expression, f, u)) {

   119     if(n->expression->type->type == TYPE_pointer) {

   120       n->location = n->expression->location;

   121       if(n->expression->locType == LOCATION_memory) {

   122         n->location = debuggerReadMemory(n->location);

   123       } else if(n->expression->locType == LOCATION_register) {

   124         n->location = reg[n->expression->location].I;

   125       } else {

   126         n->location = n->expression->location;

   127       }

   128       n->type = n->expression->type->pointer;

   129       n->locType = LOCATION_memory;

   130       return true;

   131     } else {

   132       printf("Object is not of pointer type\n");

   133     }

   134   }

   135   return false;

   136 }

   137 

   138 void exprNodeStarPrint(Node *n)

   139 {

   140   printf("*");

   141   n->expression->print(n->expression);

   142 }

   143 

   144 Node *exprNodeDot(Node *exp, Node *ident)

   145 {

   146   Node *n = (Node *)calloc(1, sizeof(Node));

   147   exprNodeClean(n);

   148   

   149   n->expression = exp;

   150   n->name = ident->name;

   151   

   152   n->print = exprNodeDotPrint;

   153   n->resolve = exprNodeDotResolve;

   154   return n;

   155 }

   156 

   157 bool exprNodeDotResolve(Node *n, Function *f, CompileUnit *u)

   158 {

   159   if(n->expression->resolve(n->expression, f, u)) {

   160     TypeEnum tt = n->expression->type->type;

   161     

   162     if(tt == TYPE_struct ||

   163        tt == TYPE_union) {

   164       u32 loc = n->expression->location;

   165       Type *t = n->expression->type;

   166       int count = t->structure->memberCount;

   167       int i = 0;

   168       while(i < count) {

   169         Member *m = &t->structure->members[i];

   170         if(strcmp(m->name, n->name) == 0) {

   171           // found member

   172           n->type = m->type;

   173           if(tt == TYPE_struct) {

   174             n->location = elfDecodeLocation(f, m->location, &n->locType,

   175                                             loc);

   176             n->objLocation = loc;

   177           } else {

   178             n->location = loc;

   179             n->locType = n->expression->locType;

   180             n->objLocation = loc;

   181           }

   182           n->member = m;

   183           return true;

   184         }

   185         i++;

   186       }

   187       printf("Member %s not found\n", n->name);

   188     } else {

   189       printf("Object is not of structure type\n");

   190     }

   191   }

   192   return false;

   193 }

   194 

   195 void exprNodeDotPrint(Node *n)

   196 {

   197   n->expression->print(n->expression);

   198   printf(".%s", n->name);

   199 }

   200 

   201 Node *exprNodeArrow(Node *exp, Node *ident)

   202 {

   203   Node *n = (Node *)calloc(1, sizeof(Node));

   204   exprNodeClean(n);

   205   

   206   n->expression = exp;

   207   n->name = ident->name;

   208   

   209   n->print = exprNodeArrowPrint;

   210   n->resolve = exprNodeArrowResolve;

   211   return n;

   212 }

   213 

   214 bool exprNodeArrowResolve(Node *n, Function *f, CompileUnit *u)

   215 {

   216   if(n->expression->resolve(n->expression, f, u)) {

   217     TypeEnum tt = n->expression->type->type;

   218     if(tt != TYPE_pointer) {

   219       printf("Object not of pointer type\n");

   220       return false;

   221     }

   222     tt = n->expression->type->pointer->type;

   223     

   224     if(tt == TYPE_struct ||

   225        tt == TYPE_union) {

   226       u32 loc = debuggerReadMemory(n->expression->location);

   227       Type *t = n->expression->type->pointer;

   228       int count = t->structure->memberCount;

   229       int i = 0;

   230       while(i < count) {

   231         Member *m = &t->structure->members[i];

   232         if(strcmp(m->name, n->name) == 0) {

   233           // found member

   234           n->type = m->type;

   235           if(tt == TYPE_struct) {

   236             n->location = elfDecodeLocation(f, m->location, &n->locType,

   237                                             loc);

   238             n->objLocation = loc;

   239           } else {

   240             n->location = loc;

   241             n->objLocation = loc;

   242           }

   243           n->locType = LOCATION_memory;

   244           n->member = m;

   245           return true;

   246         }

   247         i++;

   248       }

   249       printf("Member %s not found\n", n->name);

   250     } else {

   251       printf("Object is not of structure type\n");

   252     }

   253   }

   254   return false;

   255 }

   256 

   257 void exprNodeArrowPrint(Node *n)

   258 {

   259   n->expression->print(n->expression);

   260   printf("->%s", n->name);

   261 }

   262 

   263 Node *exprNodeAddr(Node *exp)

   264 {

   265   Node *n = (Node *)calloc(1, sizeof(Node));

   266   exprNodeClean(n);

   267   

   268   n->expression = exp;

   269   

   270   n->print = exprNodeAddrPrint;

   271   n->resolve = exprNodeAddrResolve;

   272   return n;

   273 }

   274 

   275 bool exprNodeAddrResolve(Node *n, Function *f, CompileUnit *u)

   276 {

   277   if(n->expression->resolve(n->expression, f, u)) {

   278     if(n->expression->locType == LOCATION_memory) {

   279       n->location = n->expression->location;

   280       n->locType = LOCATION_value;

   281       n->type = &exprNodeType;

   282     } else if(n->expression->locType == LOCATION_register) {

   283       printf("Value is in register %d\n", n->expression->location);

   284     } else {

   285       printf("Direct value is %d\n", n->location);

   286     }

   287     return true;

   288   }

   289   return false;

   290 }

   291 

   292 void exprNodeAddrPrint(Node *n)

   293 {

   294   printf("*");

   295   n->expression->print(n->expression);

   296 }

   297 

   298 Node *exprNodeSizeof(Node *exp)

   299 {

   300   Node *n = (Node *)calloc(1, sizeof(Node));

   301   exprNodeClean(n);

   302   

   303   n->expression = exp;

   304   

   305   n->print = exprNodeSizeofPrint;

   306   n->resolve = exprNodeSizeofResolve;

   307   return n;

   308 }

   309 

   310 bool exprNodeSizeofResolve(Node *n, Function *f, CompileUnit *u)

   311 {

   312   if(n->expression->resolve(n->expression, f, u)) {

   313     n->location = n->expression->type->size;

   314     n->locType = LOCATION_value;

   315     n->type = &exprNodeType;

   316     return true;

   317   }

   318   return false;

   319 }

   320 

   321 void exprNodeSizeofPrint(Node *n)

   322 {

   323   printf("sizeof(");

   324   n->expression->print(n->expression);

   325   printf(")");

   326 }

   327 

   328 Node *exprNodeArray(Node *exp, Node *number)

   329 {

   330   Node *n = (Node *)calloc(1, sizeof(Node));

   331   exprNodeClean(n);

   332   

   333   n->expression = exp;

   334   n->value = number->location;

   335   

   336   n->print = exprNodeArrayPrint;

   337   n->resolve = exprNodeArrayResolve;

   338   return n;

   339 }

   340 

   341 int exprNodeGetSize(Array *a, int index)

   342 {

   343   index++;

   344   if(index == a->maxBounds) {

   345     return a->type->size;

   346   } else {

   347     int size = a->bounds[a->maxBounds-1] * a->type->size;

   348     

   349     for(int i = index; i < a->maxBounds-1; i++) {

   350       size *= a->bounds[i];

   351     }

   352     return size;

   353   }

   354 }

   355 

   356 bool exprNodeArrayResolve(Node *n, Function *f, CompileUnit *u)

   357 {

   358   if(n->expression->resolve(n->expression, f, u)) {

   359     TypeEnum tt = n->expression->type->type;

   360     if(tt != TYPE_array &&

   361        tt != TYPE_pointer) {

   362       printf("Object not of array or pointer type\n");

   363       return false;

   364     }

   365 

   366     if(tt == TYPE_array) {

   367       Array *a = n->expression->type->array;

   368       

   369       u32 loc = n->expression->location;

   370       Type *t = a->type;

   371       if(a->maxBounds > 1) {

   372         int index = n->expression->index;

   373 

   374         if(index == a->maxBounds) {

   375           printf("Too many indices for array\n");

   376           return false;

   377         }

   378 

   379         if((index+1) < a->maxBounds) {

   380           n->type = n->expression->type;

   381           n->index = index+1;

   382           n->locType = LOCATION_memory;

   383           n->location = n->expression->location +

   384             n->value * exprNodeGetSize(a, index);

   385           return true;

   386         }

   387       }

   388       n->type = t;

   389       n->location = loc + n->value * t->size;

   390       n->locType = LOCATION_memory;

   391     } else {

   392       Type *t = n->expression->type->pointer;

   393       u32 loc = n->expression->location;

   394       if(n->expression->locType == LOCATION_register)

   395         loc = reg[loc].I;

   396       else

   397         loc = debuggerReadMemory(loc);

   398       n->type = t;

   399       n->location = loc + n->value * t->size;

   400       n->locType = LOCATION_memory;

   401     }

   402     return true;

   403   }

   404   return false;

   405 }

   406 

   407 void exprNodeArrayPrint(Node *n)

   408 {

   409   n->expression->print(n->expression);

   410   printf("[%d]", n->value);

   411 }
author	Robert McIntyre <rlm@mit.edu>
date	Mon, 05 Mar 2012 01:58:52 -0600
parents	f9f4f1b99eed
children