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File added support to the new generic parameter handling

mazen hace 23 años
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  1. 498 0
      compiler/sparc/ncpucnv.pas

+ 498 - 0
compiler/sparc/ncpucnv.pas

@@ -0,0 +1,498 @@
+{
+    $Id$
+    Copyright (c) 1998-2002 by Florian Klaempfl
+
+    Generate PowerPC assembler for type converting nodes
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ ****************************************************************************
+}
+unit ncpucnv;
+
+{$i fpcdefs.inc}
+
+interface
+
+    uses
+      node,ncnv,ncgcnv,defbase;
+
+    type
+       TSparctypeconvnode = class(tcgtypeconvnode)
+         protected
+          procedure second_int_to_int;override;
+         { procedure second_string_to_string;override; }
+         { procedure second_cstring_to_pchar;override; }
+         { procedure second_string_to_chararray;override; }
+         { procedure second_array_to_pointer;override; }
+          function first_int_to_real: tnode; override;
+         { procedure second_pointer_to_array;override; }
+         { procedure second_chararray_to_string;override; }
+         { procedure second_char_to_string;override; }
+          procedure second_int_to_real;override;
+          procedure second_real_to_real;override;
+         { procedure second_cord_to_pointer;override; }
+         { procedure second_proc_to_procvar;override; }
+         { procedure second_bool_to_int;override; }
+          procedure second_int_to_bool;override;
+         { procedure second_load_smallset;override;  }
+         { procedure second_ansistring_to_pchar;override; }
+         { procedure second_pchar_to_string;override; }
+         { procedure second_class_to_intf;override; }
+         { procedure second_char_to_char;override; }
+          procedure pass_2;override;
+          procedure second_call_helper(c : tconverttype); override;
+       end;
+
+implementation
+
+   uses
+      verbose,globals,systems,
+      symconst,symdef,aasmbase,aasmtai,
+      cgbase,pass_1,pass_2,
+      ncon,ncal,
+      ncgutil,
+      cpubase,aasmcpu,
+      rgobj,tgobj,cgobj,cginfo;
+
+
+{*****************************************************************************
+                             FirstTypeConv
+*****************************************************************************}
+
+    function TSparctypeconvnode.first_int_to_real: tnode;
+      var
+        fname: string[19];
+      begin
+        { converting a 64bit integer to a float requires a helper }
+        if is_64bitint(left.resulttype.def) then
+          begin
+            if is_signed(left.resulttype.def) then
+              fname := 'fpc_int64_to_double'
+            else
+              fname := 'fpc_qword_to_double';
+            result := ccallnode.createintern(fname,ccallparanode.create(
+              left,nil));
+            left:=nil;
+            firstpass(result);
+            exit;
+          end
+        else
+          { other integers are supposed to be 32 bit }
+          begin
+            if is_signed(left.resulttype.def) then
+              inserttypeconv(left,s32bittype)
+            else
+              inserttypeconv(left,u32bittype);
+            firstpass(left);
+          end;
+        result := nil;
+        if registersfpu<1 then
+          registersfpu:=1;
+        location.loc:=LOC_FPUREGISTER;
+      end;
+
+
+{*****************************************************************************
+                             SecondTypeConv
+*****************************************************************************}
+
+    procedure TSparctypeconvnode.second_int_to_int;
+      var
+        newsize : tcgsize;
+        size, leftsize : cardinal;
+      begin
+        newsize:=def_cgsize(resulttype.def);
+
+        { insert range check if not explicit conversion }
+        if not(nf_explizit in flags) then
+          cg.g_rangecheck(exprasmlist,left,resulttype.def);
+
+        { is the result size smaller ? }
+        size := resulttype.def.size;
+        leftsize := left.resulttype.def.size;
+        if (size < leftsize) or
+           (((newsize in [OS_64,OS_S64]) or
+             (left.location.loc <> LOC_REGISTER)) and
+            (size > leftsize)) then
+          begin
+            { reuse the left location by default }
+            location_copy(location,left.location);
+            location_force_reg(exprasmlist,location,newsize,false);
+          end
+        else
+          begin
+            { no special loading is required, reuse current location }
+            location_copy(location,left.location);
+            location.size:=newsize;
+          end;
+      end;
+
+
+    procedure TSparctypeconvnode.second_int_to_real;
+
+      type
+        tdummyarray = packed array[0..7] of byte;
+
+{$ifdef VER1_0}
+      var
+        dummy1, dummy2: int64;
+{$else VER1_0}
+      const
+         dummy1: int64 = $4330000080000000;
+         dummy2: int64 = $4330000000000000;
+{$endif VER1_0}
+
+      var
+        tempconst: trealconstnode;
+        ref: treference;
+        valuereg, tempreg, leftreg, tmpfpureg: tregister;
+        signed, valuereg_is_scratch: boolean;
+      begin
+{$ifdef VER1_0}
+        { the "and" is because 1.0.x will sign-extend the $80000000 to }
+        { $ffffffff80000000 when converting it to int64 (JM)           }
+        dummy1 := int64($80000000) and (int64($43300000) shl 32);
+        dummy2 := int64($43300000) shl 32;
+{$endif VER1_0}
+
+        valuereg_is_scratch := false;
+        location_reset(location,LOC_FPUREGISTER,def_cgsize(resulttype.def));
+
+        { the code here comes from the PowerPC Compiler Writer's Guide }
+
+        { * longint to double                               }
+        { addis R0,R0,0x4330  # R0 = 0x43300000             }
+        { stw R0,disp(R1)     # store upper half            }
+        { xoris R3,R3,0x8000  # flip sign bit               }
+        { stw R3,disp+4(R1)   # store lower half            }
+        { lfd FR1,disp(R1)    # float load double of value  }
+        { fsub FR1,FR1,FR2    # subtract 0x4330000080000000 }
+
+        { * cardinal to double                              }
+        { addis R0,R0,0x4330  # R0 = 0x43300000             }
+        { stw R0,disp(R1)     # store upper half            }
+        { stw R3,disp+4(R1)   # store lower half            }
+        { lfd FR1,disp(R1)    # float load double of value  }
+        { fsub FR1,FR1,FR2    # subtract 0x4330000000000000 }
+        tg.Gettemp(exprasmlist,8,tt_normal,ref);
+
+        signed := is_signed(left.resulttype.def);
+
+        { we need a certain constant for the conversion, so create it here }
+        if signed then
+          tempconst :=
+            crealconstnode.create(double(dummy1),
+            pbestrealtype^)
+        else
+          tempconst :=
+            crealconstnode.create(double(dummy2),
+            pbestrealtype^);
+
+        resulttypepass(tempconst);
+        firstpass(tempconst);
+        secondpass(tempconst);
+        if (tempconst.location.loc <> LOC_CREFERENCE) or
+           { has to be handled by a helper }
+           is_64bitint(left.resulttype.def) then
+          internalerror(200110011);
+
+        case left.location.loc of
+          LOC_REGISTER:
+            begin
+              leftreg := left.location.register;
+              valuereg := leftreg;
+            end;
+          LOC_CREGISTER:
+            begin
+              leftreg := left.location.register;
+              if signed then
+                begin
+                  valuereg := cg.get_scratch_reg_int(exprasmlist);
+                  valuereg_is_scratch := true;
+                end
+              else
+                valuereg := leftreg;
+            end;
+          LOC_REFERENCE,LOC_CREFERENCE:
+            begin
+              leftreg := cg.get_scratch_reg_int(exprasmlist);
+              valuereg := leftreg;
+              valuereg_is_scratch := true;
+              cg.a_load_ref_reg(exprasmlist,def_cgsize(left.resulttype.def),
+                left.location.reference,leftreg);
+            end
+          else
+            internalerror(200110012);
+         end;
+         tempreg := cg.get_scratch_reg_int(exprasmlist);
+         {$WARNING FIXME what reallty should be done?}
+         exprasmlist.concat(taicpu.op_reg_const_reg(A_OR,S_L,tempreg,$4330,tempreg));
+         cg.a_load_reg_ref(exprasmlist,OS_32,tempreg,ref);
+         cg.free_scratch_reg(exprasmlist,tempreg);
+         if signed then
+         {$WARNING FIXME what reallty should be done?}
+           exprasmlist.concat(taicpu.op_reg_const_reg(A_XOR,S_L,leftreg,$8000,valuereg));
+         inc(ref.offset,4);
+         cg.a_load_reg_ref(exprasmlist,OS_32,valuereg,ref);
+         dec(ref.offset,4);
+         if (valuereg_is_scratch) then
+           cg.free_scratch_reg(exprasmlist,valuereg);
+
+         if (left.location.loc = LOC_REGISTER) or
+            ((left.location.loc = LOC_CREGISTER) and
+             not signed) then
+           rg.ungetregister(exprasmlist,leftreg)
+         else
+           cg.free_scratch_reg(exprasmlist,valuereg);
+
+         tmpfpureg := rg.getregisterfpu(exprasmlist);
+         cg.a_loadfpu_ref_reg(exprasmlist,OS_F64,tempconst.location.reference,
+           tmpfpureg);
+         tempconst.free;
+
+         location.register := rg.getregisterfpu(exprasmlist);
+         {$WARNING FIXME what reallty should be done?}
+         exprasmlist.concat(taicpu.op_reg_ref(A_LD,S_L,location.register,ref));
+
+         tg.ungetiftemp(exprasmlist,ref);
+
+         exprasmlist.concat(taicpu.op_reg_reg_reg(A_SUB,S_L,location.register,
+           location.register,tmpfpureg));
+         rg.ungetregisterfpu(exprasmlist,tmpfpureg);
+
+         { work around bug in some PowerPC processors }
+         if (tfloatdef(resulttype.def).typ = s32real) then
+         {$WARNING FIXME what reallty should be done?}
+           exprasmlist.concat(taicpu.op_reg_reg(A_ADD,S_L,location.register,
+             location.register));
+       end;
+
+
+     procedure TSparctypeconvnode.second_real_to_real;
+       begin
+          inherited second_real_to_real;
+          { work around bug in some powerpc processors where doubles aren't }
+          { properly converted to singles                                   }
+          if (tfloatdef(left.resulttype.def).typ = s64real) and
+             (tfloatdef(resulttype.def).typ = s32real) then
+         {$WARNING FIXME what reallty should be done?}
+            exprasmlist.concat(taicpu.op_reg_reg(A_ADD,S_L,location.register,location.register));
+       end;
+
+
+
+
+    procedure TSparctypeconvnode.second_int_to_bool;
+      var
+        hreg1,
+        hreg2    : tregister;
+        resflags : tresflags;
+        opsize   : tcgsize;
+      begin
+         { byte(boolean) or word(wordbool) or longint(longbool) must }
+         { be accepted for var parameters                            }
+         if (nf_explizit in flags) and
+            (left.resulttype.def.size=resulttype.def.size) and
+            (left.location.loc in [LOC_REFERENCE,LOC_CREFERENCE,LOC_CREGISTER]) then
+           begin
+              location_copy(location,left.location);
+              exit;
+           end;
+         location_reset(location,LOC_REGISTER,def_cgsize(left.resulttype.def));
+         opsize := def_cgsize(left.resulttype.def);
+         case left.location.loc of
+            LOC_CREFERENCE,LOC_REFERENCE,LOC_REGISTER,LOC_CREGISTER :
+              begin
+                if left.location.loc in [LOC_CREFERENCE,LOC_REFERENCE] then
+                  begin
+                    reference_release(exprasmlist,left.location.reference);
+                    hreg2:=rg.getregisterint(exprasmlist);
+                    cg.a_load_ref_reg(exprasmlist,opsize,
+                      left.location.reference,hreg2);
+                  end
+                else
+                  hreg2 := left.location.register;
+                hreg1 := rg.getregisterint(exprasmlist);
+                exprasmlist.concat(taicpu.op_reg_const_reg(A_SUB,S_L,hreg1,1,
+                  hreg2));
+                exprasmlist.concat(taicpu.op_reg_reg_reg(A_SUB,S_L,hreg1,hreg1,
+                  hreg2));
+                rg.ungetregister(exprasmlist,hreg2);
+              end;
+            LOC_FLAGS :
+              begin
+                hreg1:=rg.getregisterint(exprasmlist);
+                resflags:=left.location.resflags;
+                cg.g_flags2reg(exprasmlist,location.size,resflags,hreg1);
+              end;
+            else
+              internalerror(10062);
+         end;
+         location.register := hreg1;
+      end;
+
+
+    procedure TSparctypeconvnode.second_call_helper(c : tconverttype);
+
+      const
+         secondconvert : array[tconverttype] of pointer = (
+           @second_nothing, {equal}
+           @second_nothing, {not_possible}
+           @second_nothing, {second_string_to_string, handled in resulttype pass }
+           @second_char_to_string,
+           @second_nothing, {char_to_charray}
+           @second_nothing, { pchar_to_string, handled in resulttype pass }
+           @second_nothing, {cchar_to_pchar}
+           @second_cstring_to_pchar,
+           @second_ansistring_to_pchar,
+           @second_string_to_chararray,
+           @second_nothing, { chararray_to_string, handled in resulttype pass }
+           @second_array_to_pointer,
+           @second_pointer_to_array,
+           @second_int_to_int,
+           @second_int_to_bool,
+           @second_bool_to_int, { bool_to_bool }
+           @second_bool_to_int,
+           @second_real_to_real,
+           @second_int_to_real,
+           @second_proc_to_procvar,
+           @second_nothing, { arrayconstructor_to_set }
+           @second_nothing, { second_load_smallset, handled in first pass }
+           @second_cord_to_pointer,
+           @second_nothing, { interface 2 string }
+           @second_nothing, { interface 2 guid   }
+           @second_class_to_intf,
+           @second_char_to_char,
+           @second_nothing,  { normal_2_smallset }
+           @second_nothing   { dynarray_2_openarray }
+         );
+      type
+         tprocedureofobject = procedure of object;
+
+      var
+         r : packed record
+                proc : pointer;
+                obj : pointer;
+             end;
+
+      begin
+         { this is a little bit dirty but it works }
+         { and should be quite portable too        }
+         r.proc:=secondconvert[c];
+         r.obj:=self;
+         tprocedureofobject(r){$ifdef FPC}();{$endif FPC}
+      end;
+
+
+    procedure TSparctypeconvnode.pass_2;
+{$ifdef TESTOBJEXT2}
+      var
+         r : preference;
+         nillabel : plabel;
+{$endif TESTOBJEXT2}
+      begin
+         { this isn't good coding, I think tc_bool_2_int, shouldn't be }
+         { type conversion (FK)                                 }
+
+         if not(convtype in [tc_bool_2_int,tc_bool_2_bool]) then
+           begin
+              secondpass(left);
+              location_copy(location,left.location);
+              if codegenerror then
+               exit;
+           end;
+         second_call_helper(convtype);
+      end;
+
+
+begin
+   ctypeconvnode:=TSparctypeconvnode;
+end.
+{
+  $Log$
+  Revision 1.1  2002-08-29 10:16:20  mazen
+  File added support to the new generic parameter handling
+
+  Revision 1.24  2002/08/23 16:14:50  peter
+    * tempgen cleanup
+    * tt_noreuse temp type added that will be used in genentrycode
+
+  Revision 1.23  2002/08/18 10:34:30  florian
+    * more ppc assembling fixes
+
+  Revision 1.22  2002/08/14 19:30:42  carl
+    + added fixing because first_in_to_real is now completely generic
+
+  Revision 1.21  2002/08/11 06:14:41  florian
+    * fixed powerpc compilation problems
+
+  Revision 1.20  2002/08/10 17:15:31  jonas
+    * various fixes and optimizations
+
+  Revision 1.19  2002/07/29 21:23:44  florian
+    * more fixes for the ppc
+    + wrappers for the tcnvnode.first_* stuff introduced
+
+  Revision 1.18  2002/07/29 09:20:20  jonas
+    + second_int_to_int implementation which is almost the same as the
+      generic implementation, but it avoids some unnecessary type conversions
+
+  Revision 1.17  2002/07/27 19:55:15  jonas
+    + generic implementation of tcg.g_flags2ref()
+    * tcg.flags2xxx() now also needs a size parameter
+
+  Revision 1.16  2002/07/24 14:38:00  florian
+    * small typo fixed, compiles with 1.0.x again
+
+  Revision 1.15  2002/07/21 16:57:22  jonas
+    * hopefully final fix for second_int_to_real()
+
+  Revision 1.14  2002/07/20 11:58:05  florian
+    * types.pas renamed to defbase.pas because D6 contains a types
+      unit so this would conflicts if D6 programms are compiled
+    + Willamette/SSE2 instructions to assembler added
+
+  Revision 1.13  2002/07/13 06:49:39  jonas
+    * fixed fpu constants in second_int_to_real (fpu values are also stored
+      in big endian)
+
+  Revision 1.12  2002/07/12 22:02:22  florian
+    * fixed to compile with 1.1
+
+  Revision 1.11  2002/07/11 14:41:34  florian
+    * start of the new generic parameter handling
+
+  Revision 1.10  2002/07/11 07:42:31  jonas
+    * fixed nppccnv and enabled it
+    - removed PPC specific second_int_to_int and use the generic one instead
+
+  Revision 1.9  2002/05/20 13:30:42  carl
+  * bugfix of hdisponen (base must be set, not index)
+  * more portability fixes
+
+  Revision 1.8  2002/05/18 13:34:26  peter
+    * readded missing revisions
+
+  Revision 1.7  2002/05/16 19:46:53  carl
+  + defines.inc -> fpcdefs.inc to avoid conflicts if compiling by hand
+  + try to fix temp allocation (still in ifdef)
+  + generic constructor calls
+  + start of tassembler / tmodulebase class cleanup
+
+  Revision 1.5  2002/04/06 18:13:02  jonas
+    * several powerpc-related additions and fixes
+
+}