+ return_result_reg and function_result_reg are now used, in all plateforms, to pass functions result between called function and its caller. See the explanation of each one

compiler/alpha/cpubase.pas

@@ -132,6 +132,14 @@ unit cpubase;
        frame_pointer_reg = R_15;
        self_pointer_reg = R_16;
        accumulator   = R_0;
+  {the return_result_reg, is used inside the called function to store its return
+  value when that is a scalar value otherwise a pointer to the address of the
+  result is placed inside it}
+	return_result_reg		=	accmulator;
+
+  {the function_result_reg contains the function result after a call to a scalar
+  function othewise it contains a pointer to the returned result}
+	function_result_reg	=	accumulator;
        fpu_result_reg = R_F0;
        global_pointer = R_29;
        return_pointer = R_26;
@@ -450,7 +458,10 @@ end;
 end.
 {
   $Log$
-  Revision 1.4  2002-09-29 23:54:12  florian
+  Revision 1.5  2002-11-17 17:49:08  mazen
+  + return_result_reg and function_result_reg are now used, in all plateforms, to pass functions result between called function and its caller. See the explanation of each one
+
+  Revision 1.4  2002/09/29 23:54:12  florian
     * alpha compiles again, changes to common code not yet commited
 
   Revision 1.3  2002/09/29 23:42:45  florian

compiler/i386/cpubase.pas

@@ -445,6 +445,14 @@ uses
       pic_offset_reg = R_EBX;
       {# Results are returned in this register (32-bit values) }
       accumulator   = R_EAX;
+  {the return_result_reg, is used inside the called function to store its return
+  value when that is a scalar value otherwise a pointer to the address of the
+  result is placed inside it}
+	return_result_reg		=	accmulator;
+
+  {the function_result_reg contains the function result after a call to a scalar
+  function othewise it contains a pointer to the returned result}
+	function_result_reg	=	accumulator;
       {# Hi-Results are returned in this register (64-bit value high register) }
       accumulatorhigh = R_EDX;
       { WARNING: don't change to R_ST0!! See comments above implementation of }
@@ -525,7 +533,10 @@ implementation
 end.
 {
   $Log$
-  Revision 1.32  2002-10-05 12:43:29  carl
+  Revision 1.33  2002-11-17 17:49:08  mazen
+  + return_result_reg and function_result_reg are now used, in all plateforms, to pass functions result between called function and its caller. See the explanation of each one
+
+  Revision 1.32  2002/10/05 12:43:29  carl
     * fixes for Delphi 6 compilation
      (warning : Some features do not work under Delphi)
 

compiler/ia64/cpubase.pas

@@ -92,6 +92,14 @@ Const
   frame_pointer_reg = R_15;
   self_pointer_reg  = R_16;
   accumulator   = R_0;
+  {the return_result_reg, is used inside the called function to store its return
+  value when that is a scalar value otherwise a pointer to the address of the
+  result is placed inside it}
+	return_result_reg		=	accmulator;
+
+  {the function_result_reg contains the function result after a call to a scalar
+  function othewise it contains a pointer to the returned result}
+	function_result_reg	=	accumulator;
   global_pointer = R_29;
   return_pointer = R_26;
 
@@ -275,7 +283,10 @@ implementation
 end.
 {
   $Log$
-  Revision 1.4  2002-09-07 15:25:11  peter
+  Revision 1.5  2002-11-17 17:49:09  mazen
+  + return_result_reg and function_result_reg are now used, in all plateforms, to pass functions result between called function and its caller. See the explanation of each one
+
+  Revision 1.4  2002/09/07 15:25:11  peter
     * old logs removed and tabs fixed
 
   Revision 1.3  2002/04/20 21:38:45  carl

compiler/m68k/cpubase.pas

@@ -490,6 +490,14 @@ uses
       pic_offset_reg = R_A5;
       {# Results are returned in this register (32-bit values) }
       accumulator   = R_D0;
+  {the return_result_reg, is used inside the called function to store its return
+  value when that is a scalar value otherwise a pointer to the address of the
+  result is placed inside it}
+	return_result_reg		=	accmulator;
+
+  {the function_result_reg contains the function result after a call to a scalar
+  function othewise it contains a pointer to the returned result}
+	function_result_reg	=	accumulator;
       {# Hi-Results are returned in this register (64-bit value high register) }
       accumulatorhigh = R_D1;
       {# Floating point results will be placed into this register }
@@ -584,7 +592,10 @@ implementation
 end.
 {
   $Log$
-  Revision 1.11  2002-10-14 16:32:36  carl
+  Revision 1.12  2002-11-17 17:49:09  mazen
+  + return_result_reg and function_result_reg are now used, in all plateforms, to pass functions result between called function and its caller. See the explanation of each one
+
+  Revision 1.11  2002/10/14 16:32:36  carl
     + flag_2_cond implemented
 
   Revision 1.10  2002/08/18 09:02:12  florian

compiler/ncgutil.pas

@@ -1121,7 +1121,11 @@ implementation
              enumdef :
                begin
                  uses_acc:=true;
-                 cg.a_reg_alloc(list,accumulator);
+{$WARNING accumulator was replaced by return_result_reg}
+{Here, we return the function result. In most architectures, the value is
+passed into the accumulator, but in a windowed architecure like sparc a
+function returns in a register and the caller receives it in an other one}
+                  cg.a_reg_alloc(list,return_result_reg);
 {$ifndef cpu64bit}
                  if cgsize in [OS_64,OS_S64] then
                   begin
@@ -1132,7 +1136,11 @@ implementation
                  else
 {$endif cpu64bit}
                   begin
-                    hreg:=rg.makeregsize(accumulator,cgsize);
+{$WARNING accumulator was replaced by return_result_reg}
+{Here, we return the function result. In most architectures, the value is
+passed into the accumulator, but in a windowed architecure like sparc a
+function returns in a register and the caller receives it in an other one}
+                    hreg:=rg.makeregsize(return_result_reg,cgsize);
                     cg.a_load_ref_reg(list,cgsize,href,hreg);
                   end;
                end;
@@ -1867,7 +1875,10 @@ implementation
 end.
 {
   $Log$
-  Revision 1.60  2002-11-17 16:31:56  carl
+  Revision 1.61  2002-11-17 17:49:08  mazen
+  + return_result_reg and function_result_reg are now used, in all plateforms, to pass functions result between called function and its caller. See the explanation of each one
+
+  Revision 1.60  2002/11/17 16:31:56  carl
     * memory optimization (3-4%) : cleanup of tai fields,
        cleanup of tdef and tsym fields.
     * make it work for m68k

compiler/powerpc/cpubase.pas

@@ -591,6 +591,14 @@ uses
       pic_offset_reg = R_30;
       {# Results are returned in this register (32-bit values) }
       accumulator   = R_3;
+  {the return_result_reg, is used inside the called function to store its return
+  value when that is a scalar value otherwise a pointer to the address of the
+  result is placed inside it}
+	return_result_reg		=	accmulator;
+
+  {the function_result_reg contains the function result after a call to a scalar
+  function othewise it contains a pointer to the returned result}
+	function_result_reg	=	accumulator;
       {# Hi-Results are returned in this register (64-bit value high register) }
       accumulatorhigh = R_4;
       { WARNING: don't change to R_ST0!! See comments above implementation of }
@@ -721,7 +729,10 @@ implementation
 end.
 {
   $Log$
-  Revision 1.34  2002-09-17 18:54:06  jonas
+  Revision 1.35  2002-11-17 17:49:09  mazen
+  + return_result_reg and function_result_reg are now used, in all plateforms, to pass functions result between called function and its caller. See the explanation of each one
+
+  Revision 1.34  2002/09/17 18:54:06  jonas
     * a_load_reg_reg() now has two size parameters: source and dest. This
       allows some optimizations on architectures that don't encode the
       register size in the register name.

compiler/sparc/cgcpu.pas

@@ -821,7 +821,7 @@ stack frame. In the "SAVE %i6,size,%i6" the first %i6 is related to the state
 before execution of the SAVE instrucion so it is the caller %i6, when the %i6
 after execution of that instruction is the called function stack pointer}
     with list do
-      concat(Taicpu.Op_reg_const_reg(A_SAVE,Stack_Pointer_Reg,LocalSize,Stack_Pointer_Reg));
+      concat(Taicpu.Op_reg_const_reg(A_SAVE,Stack_Pointer_Reg,-LocalSize,Stack_Pointer_Reg));
   end;
 procedure tcgSPARC.g_restore_frame_pointer(list:TAasmOutput);
   begin
@@ -1253,7 +1253,10 @@ BEGIN
 END.
 {
   $Log$
-  Revision 1.23  2002-11-10 19:07:46  mazen
+  Revision 1.24  2002-11-17 17:49:09  mazen
+  + return_result_reg and function_result_reg are now used, in all plateforms, to pass functions result between called function and its caller. See the explanation of each one
+
+  Revision 1.23  2002/11/10 19:07:46  mazen
   * SPARC calling mechanism almost OK (as in GCC./mppcsparc )
 
   Revision 1.22  2002/11/06 11:31:24  mazen

compiler/sparc/cpupi.pas

@@ -50,8 +50,6 @@ stack frame.}
   end;
 implementation
 uses
-	globtype,globals,
-	aasmtai,
 	tgobj;
 constructor TSparcprocinfo.create;
 	begin
@@ -65,7 +63,7 @@ procedure TSparcprocinfo.after_header;
     register overflow/underflow}
     {The 17th word is used to save the address of the variable which will
     receive the return value of the called function}
-    Return_Offset:=-64;{16*4}
+    Return_Offset:=64;{16*4}
     procdef.parast.address_fixup:=(16+1)*4;
   	{Reserve the stack for copying parameters passed into registers. By default
     we reserve space for the 6 input registers even if the function had less
@@ -83,8 +81,11 @@ procedure TSparcProcInfo.after_pass1;
 	      WriteLn('Parameter copies start at: %i6+'+tostr(parast.address_fixup));
     		WriteLn('Locals start at: %o6+'+tostr(localst.address_fixup));
 	      WriteLn('Temp. space start: %o6+'+tostr(firsttemp_offset));
-    		tg.firsttemp:=procinfo.firsttemp_offset;
-		    tg.lasttemp:=procinfo.firsttemp_offset;
+        with tg do
+          begin
+        		FirstTemp:=firsttemp_offset;
+		        LastTemp:=firsttemp_offset;
+          end;
       end;
 	end;
 begin
@@ -92,7 +93,10 @@ begin
 end.
 {
   $Log$
-  Revision 1.7  2002-11-14 21:42:08  mazen
+  Revision 1.8  2002-11-17 17:49:09  mazen
+  + return_result_reg and function_result_reg are now used, in all plateforms, to pass functions result between called function and its caller. See the explanation of each one
+
+  Revision 1.7  2002/11/14 21:42:08  mazen
   * fixing return value variable address
 
   Revision 1.6  2002/11/10 19:07:46  mazen

compiler/tgobj.pas

@@ -157,6 +157,9 @@ unit tgobj;
 {$else powerpc}
        direction:=-1;
 {$endif powerpc}
+{$IFDEF SPARC}
+        Direction:=1;
+{$ENDIF SPARC}
      end;
 
 
@@ -532,7 +535,10 @@ finalization
 end.
 {
   $Log$
-  Revision 1.19  2002-11-15 01:58:54  peter
+  Revision 1.20  2002-11-17 17:49:08  mazen
+  + return_result_reg and function_result_reg are now used, in all plateforms, to pass functions result between called function and its caller. See the explanation of each one
+
+  Revision 1.19  2002/11/15 01:58:54  peter
     * merged changes from 1.0.7 up to 04-11
       - -V option for generating bug report tracing
       - more tracing for option parsing

compiler/vis/cpubase.pas

@@ -437,6 +437,14 @@ uses
       pic_offset_reg = R_R10;
       {# Results are returned in this register (32-bit values) }
       accumulator   = R_R0;
+  {the return_result_reg, is used inside the called function to store its return
+  value when that is a scalar value otherwise a pointer to the address of the
+  result is placed inside it}
+	return_result_reg		=	accmulator;
+
+  {the function_result_reg contains the function result after a call to a scalar
+  function othewise it contains a pointer to the returned result}
+	function_result_reg	=	accumulator;
       {# Hi-Results are returned in this register (64-bit value high register) }
       accumulatorhigh = R_R1;
       fpu_result_reg = R_FP0;
@@ -526,7 +534,10 @@ implementation
 end.
 {
   $Log$
-  Revision 1.1  2002-10-14 16:31:52  carl
+  Revision 1.2  2002-11-17 17:49:09  mazen
+  + return_result_reg and function_result_reg are now used, in all plateforms, to pass functions result between called function and its caller. See the explanation of each one
+
+  Revision 1.1  2002/10/14 16:31:52  carl
     + first revision of vm
 
 }

compiler/x86_64/cpubase.pas

@@ -413,6 +413,14 @@ const
        frame_pointer_reg = R_RBP;
        self_pointer_reg  = R_RSI;
        accumulator   = R_RAX;
+  {the return_result_reg, is used inside the called function to store its return
+  value when that is a scalar value otherwise a pointer to the address of the
+  result is placed inside it}
+	return_result_reg		=	accmulator;
+
+  {the function_result_reg contains the function result after a call to a scalar
+  function othewise it contains a pointer to the returned result}
+	function_result_reg	=	accumulator;
        accumulatorhigh = R_RDX;
        { the register where the vmt offset is passed to the destructor }
        { helper routine                                                }
@@ -491,7 +499,10 @@ implementation
 end.
 {
   $Log$
-  Revision 1.2  2002-07-25 22:55:33  florian
+  Revision 1.3  2002-11-17 17:49:09  mazen
+  + return_result_reg and function_result_reg are now used, in all plateforms, to pass functions result between called function and its caller. See the explanation of each one
+
+  Revision 1.2  2002/07/25 22:55:33  florian
     * several fixes, small test units can be compiled
 
   Revision 1.1  2002/07/24 22:38:15  florian