changes made to handle multiple sends & receives

[fw/sdcc] / src / SDCCmem.c

diff --git a/src/SDCCmem.c b/src/SDCCmem.c
index a0e137d4998f46178c3f452ce389a5f8117738cf..c98b2bd0f9ab538305821005d907fb901e95be15 100644 (file)
--- a/src/SDCCmem.c
+++ b/src/SDCCmem.c
@@ -104,7 +104,12 @@ initMem ()
      DEBUG-NAME     -   'B'
      POINTER-TYPE   -   POINTER
    */
-  istack = allocMap (0, 0, 0, 0, 0, 0, options.stack_loc, ISTACK_NAME, 'B', POINTER);
+  if (ISTACK_NAME) {
+    istack = allocMap (0, 0, 0, 0, 0, 0, options.stack_loc, 
+                      ISTACK_NAME, 'B', POINTER);
+  } else {
+    istack=NULL;
+  }
 
   /* code  segment ;   
      SFRSPACE       -   NO
@@ -164,7 +169,11 @@ initMem ()
      DEBUG-NAME     -   'E'
      POINTER-TYPE   -   POINTER
    */
-  overlay = allocMap (0, 0, 0, 1, 0, 0, options.data_loc, DATA_NAME, 'E', POINTER);
+  if (OVERLAY_NAME) {
+    overlay = allocMap (0, 0, 0, 1, 0, 0, options.data_loc, DATA_NAME, 'E', POINTER);
+  } else {
+    overlay = NULL;
+  }
 
   /* Xternal Data segment - 
      SFRSPACE       -   NO
@@ -190,7 +199,12 @@ initMem ()
      DEBUG-NAME     -   'G'
      POINTER-TYPE   -   IPOINTER
    */
-  idata = allocMap (0, 0, 0, 0, 0, 0, options.idata_loc, IDATA_NAME, 'G', IPOINTER);
+  if (IDATA_NAME) {
+    idata = allocMap (0, 0, 0, 0, 0, 0, options.idata_loc, 
+                     IDATA_NAME, 'G', IPOINTER);
+  } else {
+    idata=NULL;
+  }
 
   /* Static segment (code for variables );
      SFRSPACE       -   NO
@@ -381,16 +395,19 @@ allocGlobal (symbol * sym)
     }
 
   /* if it is fixed, then allocate depending on the  */
-  /* current memory model,same for automatics        */
+  /* current memory model, same for automatics        */
   if (SPEC_SCLS (sym->etype) == S_FIXED ||
-      SPEC_SCLS (sym->etype) == S_AUTO)
-    {
+      SPEC_SCLS (sym->etype) == S_AUTO) {
+    if (port->mem.default_globl_map != xdata) {
       /* set the output class */
       SPEC_OCLS (sym->etype) = port->mem.default_globl_map;
       /* generate the symbol  */
       allocIntoSeg (sym);
       return;
+    } else {
+      SPEC_SCLS (sym->etype) = S_XDATA;
     }
+  }
 
   /* if code change to constant */
   if (SPEC_SCLS (sym->etype) == S_CODE) {
@@ -401,12 +418,12 @@ allocGlobal (symbol * sym)
 
   if (SPEC_SCLS (sym->etype) == S_XDATA)
     {
-      SPEC_OCLS (sym->etype) = xdata;
       // should we move this to the initialized data segment?
       if (port->genXINIT &&
          sym->ival && (sym->level==0) && !SPEC_ABSA(sym->etype)) {
        SPEC_OCLS(sym->etype)=xidata;
-       addSet(&xidata->syms, sym);
+      } else {
+       SPEC_OCLS (sym->etype) = xdata;
       }
       allocIntoSeg (sym);
       return;
@@ -543,14 +560,13 @@ deallocParms (value * val)
 
       /* unmark is myparm */
       lval->sym->ismyparm = 0;
-      /* if on stack then depending on which stack */
 
       /* delete it from the symbol table  */
       deleteSym (SymbolTab, lval->sym, lval->sym->name);
 
       if (!lval->sym->isref)
        {
-         lval->sym->allocreq = 1;
+         lval->sym->allocreq = 0;
          werror (W_NO_REFERENCE, currFunc->name,
                  "function argument", lval->sym->name);
        }
@@ -721,7 +737,7 @@ deallocLocal (symbol * csym)
 
   for (sym = csym; sym; sym = sym->next)
     {
-      if (sym->_isparm)
+      if (sym->_isparm) 
        continue;
 
       /* if it is on the stack */
@@ -1061,6 +1077,10 @@ canOverlayLocals (eBBlock ** ebbs, int count)
 void 
 doOverlays (eBBlock ** ebbs, int count)
 {
+  if (!overlay) {
+    return;
+  }
+
   /* check if the parameters and local variables
      of this function can be put in the overlay segment
      This check is essentially to see if the function
@@ -1098,4 +1118,5 @@ printAllocInfo (symbol * func, FILE * of)
   printAllocInfoSeg (idata, func, of);
   printAllocInfoSeg (sfr, func, of);
   printAllocInfoSeg (sfrbit, func, of);
+  fprintf (of, ";------------------------------------------------------------\n");
 }