+ some initial darwin/x86 stuff:

    * align stack to 16 bytes
    * extended takes 16 bytes
    * <= 8 byte records are passed in registers

git-svn-id: trunk@1224 -

compiler/i386/cpupara.pas

@@ -111,6 +111,19 @@ unit cpupara;
                   end;
               end;
             end;
+          system_i386_darwin :
+            begin
+              case def.deftype of
+                recorddef : 
+                  begin
+                    if (def.size <= 8) then
+                      begin
+                        result := false;
+                        exit;
+                      end;
+                  end;
+              end;
+            end;
         end;
         result:=inherited ret_in_param(def,calloption);
       end;

compiler/i386/cpupi.pas

@@ -56,7 +56,10 @@ unit cpupi;
       begin
         { align to 4 bytes at least
           otherwise all those subl $2,%esp are meaningless PM }
-        result:=Align(tg.direction*tg.lasttemp,min(aktalignment.localalignmin,4));
+        if (target_info.system <> target_i386_darwin) then
+          result:=Align(tg.direction*tg.lasttemp,min(aktalignment.localalignmin,4))
+        else
+          result:=Align(tg.direction*tg.lasttemp,min(aktalignment.localalgnmin,16));
       end;
 
 

compiler/symtable.pas

@@ -1055,6 +1055,10 @@ implementation
                fieldalignment:=4
               else if (varalign>1) and (fieldalignment<2) then
                fieldalignment:=2;
+              { darwin/x86 aligns long doubles on 16 bytes }
+              if (target_info.system = system_i386_darwin) and
+                 (fieldalignment = 12) then
+                fieldalignment := 16;
             end;
            fieldalignment:=min(fieldalignment,aktalignment.maxCrecordalign);
          end;

compiler/systems.pas

@@ -120,7 +120,9 @@ interface
              system_i386_wince,         { 40 }
              system_x86_6432_linux,     { 41 }
              system_arm_gba,            { 42 }
-             system_powerpc64_linux     { 43 }
+             system_arm_gba,            { 42 }
+             system_powerpc64_linux,    { 43 }
+             system_i386_darwin         { 44 }
        );
 
        tasm = (as_none

compiler/systems/i_bsd.pas

@@ -470,6 +470,70 @@ unit i_bsd;
             abi : abi_powerpc_aix;
           );
 
+
+
+       system_i386_darwin_info  : tsysteminfo =
+          (
+            system       : system_i386_darwin;
+            name         : 'Darwin for i386';
+            shortname    : 'Darwin';
+            flags        : [];
+            cpu          : cpu_i386;
+            unit_env     : 'BSDUNITS';
+            extradefines : 'UNIX;BSD;HASUNIX';
+            exeext       : '';
+            defext       : '.def';
+            scriptext    : '.sh';
+            smartext     : '.sl';
+            unitext      : '.ppu';
+            unitlibext   : '.ppl';
+            asmext       : '.s';
+            objext       : '.o';
+            resext       : '.res';
+            resobjext    : '.or';
+            sharedlibext : '.dylib';
+            staticlibext : '.a';
+            staticlibprefix : 'libp';
+            sharedlibprefix : 'lib';
+            sharedClibext : '.dylib';
+            staticClibext : '.a';
+            staticClibprefix : 'lib';
+            sharedClibprefix : 'lib';
+            p_ext_support : true;
+            Cprefix      : '_';
+            newline      : #10;
+            dirsep       : '/';
+            files_case_relevent : true;
+            assem        : as_darwin;
+            assemextern  : as_darwin;
+            link         : nil;
+            linkextern   : nil;
+            ar           : ar_gnu_ar;
+            res          : res_none;
+            dbg          : dbg_stabs;
+            script       : script_unix;
+            endian       : endian_big;
+            alignment    :
+              (
+                procalign       : 16;
+                loopalign       : 4;
+                jumpalign       : 0;
+                constalignmin   : 0;
+                constalignmax   : 4;
+                varalignmin     : 0;
+                varalignmax     : 4;
+                localalignmin   : 0;
+                localalignmax   : 4;
+                recordalignmin  : 0;
+                recordalignmax  : 16;
+                maxCrecordalign : 16
+              );
+            first_parm_offset : 8;
+            stacksize   : 262144;
+            DllScanSupported:false;
+            use_function_relative_addresses : true;
+          );
+
   implementation
 
 initialization
@@ -483,6 +547,9 @@ initialization
   {$ifdef OpenBSD}
      set_source_info(system_i386_NetBSD_info);
   {$endif}
+  {$ifdef Darwin}
+     set_source_info(system_i386_Darwin_info);
+  {$endif Darwin}
 {$endif cpu86}
 {$ifdef cpux86_64}
    {$ifdef FreeBSD}