+ added an i8086-embedded target support to the compiler (RTL and makefile

  support are not done yet)

git-svn-id: trunk@33999 -

compiler/i8086/cputarg.pas

@@ -41,6 +41,9 @@ implementation
     {$ifndef NOTARGETWIN}
       ,t_win16
     {$endif}
+    {$ifndef NOTARGETEMBEDDED}
+      ,t_embed
+    {$endif}
 
 {**************************************
              Assemblers

compiler/ogomf.pas

@@ -2723,7 +2723,7 @@ implementation
             idtxt  : 'OMF';
             asmbin : '';
             asmcmd : '';
-            supported_targets : [system_i8086_msdos];
+            supported_targets : [system_i8086_msdos,system_i8086_embedded];
             flags : [af_outputbinary,af_no_debug];
             labelprefix : '..@';
             comment : '; ';

compiler/options.pas

@@ -2248,7 +2248,7 @@ begin
                     'm':
                       begin
 {$if defined(i8086)}
-                        if (target_info.system in [system_i8086_msdos,system_i8086_win16]) then
+                        if (target_info.system in [system_i8086_msdos,system_i8086_win16,system_i8086_embedded]) then
                           begin
                             case Upper(Copy(More,j+1,255)) of
                               'TINY':    init_settings.x86memorymodel:=mm_tiny;
@@ -2323,7 +2323,7 @@ begin
                     't':
                       begin
 {$if defined(i8086)}
-                        if (target_info.system in [system_i8086_msdos]) then
+                        if (target_info.system in [system_i8086_msdos,system_i8086_embedded]) then
                           begin
                             case Upper(Copy(More,j+1,255)) of
                               'EXE': SetAppType(app_cui);
@@ -3085,7 +3085,7 @@ begin
 {$endif i8086}
 
   if (paratargetdbg in [dbg_dwarf2,dbg_dwarf3]) and
-     not(target_info.system in (systems_darwin+[system_i8086_msdos])) then
+     not(target_info.system in (systems_darwin+[system_i8086_msdos,system_i8086_embedded])) then
     begin
       { smartlink creation does not yet work with DWARF
         debug info on most targets, but it works in internal assembler }

compiler/pdecvar.pas

@@ -1165,7 +1165,7 @@ implementation
                 abssym.addroffset:=Tordconstnode(pt).value.svalue;
 {$if defined(i386) or defined(i8086)}
               tcpuabsolutevarsym(abssym).absseg:=false;
-              if (target_info.system in [system_i386_go32v2,system_i386_watcom,system_i8086_msdos,system_i8086_win16]) and
+              if (target_info.system in [system_i386_go32v2,system_i386_watcom,system_i8086_msdos,system_i8086_win16,system_i8086_embedded]) and
                   try_to_consume(_COLON) then
                 begin
                   pt.free;

compiler/pexpr.pas

@@ -2080,7 +2080,7 @@ implementation
                          begin
                            p2:=comp_expr([ef_accept_equal]);
                            { support SEG:OFS for go32v2/msdos Mem[] }
-                           if (target_info.system in [system_i386_go32v2,system_i386_watcom,system_i8086_msdos,system_i8086_win16]) and
+                           if (target_info.system in [system_i386_go32v2,system_i386_watcom,system_i8086_msdos,system_i8086_win16,system_i8086_embedded]) and
                               (p1.nodetype=loadn) and
                               assigned(tloadnode(p1).symtableentry) and
                               assigned(tloadnode(p1).symtableentry.owner.name) and

compiler/ppc8086.lpi

@@ -28,7 +28,7 @@
         <LaunchingApplication PathPlusParams="\usr\X11R6\bin\xterm -T 'Lazarus Run Output' -e $(LazarusDir)\tools\runwait.sh $(TargetCmdLine)"/>
       </local>
     </RunParams>
-    <Units Count="239">
+    <Units Count="241">
       <Unit0>
         <Filename Value="pp.pas"/>
         <IsPartOfProject Value="True"/>
@@ -833,6 +833,7 @@
       <Unit200>
         <Filename Value="rautils.pas"/>
         <IsPartOfProject Value="True"/>
+        <UnitName Value="RAUtils"/>
       </Unit200>
       <Unit201>
         <Filename Value="regvars.pas"/>
@@ -986,6 +987,14 @@
         <Filename Value="systems\t_win16.pas"/>
         <IsPartOfProject Value="True"/>
       </Unit238>
+      <Unit239>
+        <Filename Value="systems\i_embed.pas"/>
+        <IsPartOfProject Value="True"/>
+      </Unit239>
+      <Unit240>
+        <Filename Value="systems\t_embed.pas"/>
+        <IsPartOfProject Value="True"/>
+      </Unit240>
     </Units>
   </ProjectOptions>
   <CompilerOptions>

compiler/scandir.pas

@@ -282,7 +282,8 @@ unit scandir;
       begin
         if not (target_info.system in systems_all_windows + [system_i386_os2,
                                        system_i386_emx, system_powerpc_macos,
-                                       system_arm_nds, system_i8086_msdos] +
+                                       system_arm_nds, system_i8086_msdos,
+                                       system_i8086_embedded] +
                                        systems_nativent) then
           begin
             if m_delphi in current_settings.modeswitches then
@@ -298,9 +299,9 @@ unit scandir;
               begin
                  current_scanner.skipspace;
                  hs:=current_scanner.readid;
-                 if (hs='GUI') and not (target_info.system in [system_i8086_msdos]) then
+                 if (hs='GUI') and not (target_info.system in [system_i8086_msdos,system_i8086_embedded]) then
                    SetApptype(app_gui)
-                 else if (hs='CONSOLE') and not (target_info.system in [system_i8086_msdos]) then
+                 else if (hs='CONSOLE') and not (target_info.system in [system_i8086_msdos,system_i8086_embedded]) then
                    SetApptype(app_cui)
                  else if (hs='NATIVE') and (target_info.system in systems_windows + systems_nativent) then
                    SetApptype(app_native)
@@ -313,9 +314,9 @@ unit scandir;
                    SetApptype(app_arm9)
                  else if (hs='ARM7') and (target_info.system in [system_arm_nds]) then
                    SetApptype(app_arm7)
-                 else if (hs='COM') and (target_info.system in [system_i8086_msdos]) then
+                 else if (hs='COM') and (target_info.system in [system_i8086_msdos,system_i8086_embedded]) then
                    SetApptype(app_com)
-                 else if (hs='EXE') and (target_info.system in [system_i8086_msdos]) then
+                 else if (hs='EXE') and (target_info.system in [system_i8086_msdos,system_i8086_embedded]) then
                    SetApptype(app_cui)
                  else
                    Message1(scan_w_unsupported_app_type,hs);
@@ -438,7 +439,7 @@ unit scandir;
 
     procedure dir_forcefarcalls;
       begin
-        if (target_info.system<>system_i8086_msdos)
+        if not (target_info.system in [system_i8086_msdos,system_i8086_embedded])
 {$ifdef i8086}
            or (current_settings.x86memorymodel in x86_near_code_models)
 {$endif i8086}
@@ -1258,7 +1259,7 @@ unit scandir;
       begin
         do_moduleswitch(cs_create_smart);
         if (target_dbg.id in [dbg_dwarf2,dbg_dwarf3]) and
-            not(target_info.system in (systems_darwin+[system_i8086_msdos])) and
+            not(target_info.system in (systems_darwin+[system_i8086_msdos,system_i8086_embedded])) and
             { smart linking does not yet work with DWARF debug info on most targets }
             (cs_create_smart in current_settings.moduleswitches) and
             not (af_outputbinary in target_asm.flags) then
@@ -1626,7 +1627,7 @@ unit scandir;
 
     procedure dir_hugecode;
       begin
-        if (target_info.system<>system_i8086_msdos)
+        if not (target_info.system in [system_i8086_msdos,system_i8086_embedded])
 {$ifdef i8086}
            or (current_settings.x86memorymodel in x86_near_code_models)
 {$endif i8086}
@@ -1642,7 +1643,7 @@ unit scandir;
       var
         hs : string;
       begin
-        if target_info.system<>system_i8086_msdos then
+        if not (target_info.system in [system_i8086_msdos,system_i8086_embedded]) then
           begin
             Message1(scanner_w_directive_ignored_on_target, 'HUGEPOINTERNORMALIZATION');
             exit;
@@ -1672,7 +1673,7 @@ unit scandir;
 
     procedure dir_hugepointerarithmeticnormalization;
       begin
-        if target_info.system<>system_i8086_msdos then
+        if not (target_info.system in [system_i8086_msdos,system_i8086_embedded]) then
           begin
             Message1(scanner_w_directive_ignored_on_target, 'HUGEPOINTERARITHMETICNORMALIZATION');
             exit;
@@ -1682,7 +1683,7 @@ unit scandir;
 
     procedure dir_hugepointercomparisonnormalization;
       begin
-        if target_info.system<>system_i8086_msdos then
+        if not (target_info.system in [system_i8086_msdos,system_i8086_embedded]) then
           begin
             Message1(scanner_w_directive_ignored_on_target, 'HUGEPOINTERCOMPARISONNORMALIZATION');
             exit;

compiler/scanner.pas

@@ -701,16 +701,16 @@ implementation
     procedure SetAppType(NewAppType:tapptype);
       begin
 {$ifdef i8086}
-        if (target_info.system=system_i8086_msdos) and (apptype<>NewAppType) then
+        if (target_info.system in [system_i8086_msdos,system_i8086_embedded]) and (apptype<>NewAppType) then
           begin
             if NewAppType=app_com then
               begin
-                targetinfos[system_i8086_msdos]^.exeext:='.com';
+                targetinfos[target_info.system]^.exeext:='.com';
                 target_info.exeext:='.com';
               end
             else
               begin
-                targetinfos[system_i8086_msdos]^.exeext:='.exe';
+                targetinfos[target_info.system]^.exeext:='.exe';
                 target_info.exeext:='.exe';
               end;
           end;

compiler/systems.inc

@@ -171,7 +171,8 @@
              system_aarch64_darwin,     { 86 }
              system_x86_64_iphonesim,   { 87 }
              system_aarch64_linux,      { 88 }
-             system_i8086_win16         { 89 }
+             system_i8086_win16,        { 89 }
+             system_i8086_embedded      { 90 }
        );
 
      type

compiler/systems/i_embed.pas

@@ -22,6 +22,13 @@ unit i_embed;
 
 {$i fpcdefs.inc}
 
+{$ifdef go32v2}
+  { As wlib uses a different Dos-Extender, long-command line
+    encoding for DJGPP does not work here.
+    Put all inside a script file instead }
+  {$define USE_SCRIPTED_WLIB}
+{$endif}
+
   interface
 
     uses
@@ -348,6 +355,75 @@ unit i_embed;
             llvmdatalayout : 'e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128';
          );
 
+       system_i8086_embedded_info : tsysteminfo =
+          (
+            system       : system_i8086_embedded;
+            name         : 'Embedded';
+            shortname    : 'embedded';
+            flags        : [tf_use_8_3,tf_smartlink_library,
+                            tf_no_objectfiles_when_smartlinking,tf_cld,
+                            tf_no_generic_stackcheck,tf_emit_stklen];
+            cpu          : cpu_i8086;
+            unit_env     : '';
+            extradefines : '';
+            exeext       : '.exe';
+            defext       : '.def';
+            scriptext    : '.bat';
+            smartext     : '.sl';
+            unitext      : '.ppu';
+            unitlibext   : '.ppl';
+            asmext       : '.s';
+            objext       : '.o';
+            resext       : '.res';
+            resobjext    : '.or';
+            sharedlibext : '.dll';
+            staticlibext : '.a';
+            staticlibprefix : '';
+            sharedlibprefix : '';
+            sharedClibext : '.dll';
+            staticClibext : '.a';
+            staticClibprefix : 'lib';
+            sharedClibprefix : '';
+            importlibprefix : '';
+            importlibext : '.al';
+            Cprefix      : '_';
+            newline      : #13#10;
+            dirsep       : '\';
+            assem        : as_i8086_omf;
+            assemextern  : as_i8086_nasmobj;
+            link         : ld_int_msdos;
+            linkextern   : ld_msdos;
+{$ifdef USE_SCRIPTED_WLIB}
+            ar           : ar_watcom_wlib_omf_scripted;
+{$else}
+            ar           : ar_watcom_wlib_omf;
+{$endif}
+            res          : res_none;
+            dbg          : dbg_dwarf2;
+            script       : script_dos;
+            endian       : endian_little;
+            alignment    :
+              (
+                procalign       : 1;
+                loopalign       : 1;
+                jumpalign       : 0;
+                constalignmin   : 0;
+                constalignmax   : 2;
+                varalignmin     : 0;
+                varalignmax     : 2;
+                localalignmin   : 0;
+                localalignmax   : 2;
+                recordalignmin  : 0;
+                recordalignmax  : 2;
+                maxCrecordalign : 2
+              );
+            first_parm_offset : 4;
+            stacksize    : 0;
+            stackalign   : 2;
+            abi          : abi_default;
+            llvmdatalayout : 'todo';
+          );
+
   implementation
 
 initialization
@@ -376,4 +452,9 @@ initialization
     set_source_info(system_x86_64_embedded_info);
   {$endif embedded}
 {$endif CPUX86_64}
+{$ifdef cpu8086}
+  {$ifdef embedded}
+    set_source_info(system_i8086_embedded_info);
+  {$endif embedded}
+{$endif cpu8086}
 end.

compiler/systems/t_embed.pas

@@ -1487,6 +1487,14 @@ initialization
   RegisterTarget(system_x86_64_embedded_info);
 {$endif x86_64}
 
+{$ifdef i8086}
+  { no need to register linker ld_embedded, because i8086_embedded uses the
+    regular msdos linker. In case a flat binary, relocated for a specific
+    segment address is needed (e.g. for a BIOS or a real mode bootloader), it
+    can be produced post-compilation with exe2bin or a similar tool. }
+  RegisterTarget(system_i8086_embedded_info);
+{$endif i8086}
+
 {$ifdef mipsel}
   RegisterLinker(ld_embedded,TLinkerEmbedded);
   RegisterTarget(system_mipsel_embedded_info);

compiler/utils/ppuutils/ppudump.pp

@@ -173,7 +173,8 @@ const
   { 86 }  'Darwin-AArch64',
   { 87 }  'iPhoneSim-x86-64',
   { 88 }  'Linux-AArch64',
-  { 89 }  'Win16'
+  { 89 }  'Win16',
+  { 90 }  'Embedded-i8086'
   );
 
 const

compiler/x86/agx86nsm.pas

@@ -581,7 +581,7 @@ interface
         else if (atype=sec_threadvar) and
           (target_info.system in (systems_windows+systems_wince)) then
           writer.AsmWrite('.tls'#9'bss')
-        else if target_info.system in [system_i8086_msdos,system_i8086_win16] then
+        else if target_info.system in [system_i8086_msdos,system_i8086_win16,system_i8086_embedded] then
           begin
             if secnames[atype]='.text' then
               secname:=CodeSectionName(aname)
@@ -643,7 +643,7 @@ interface
       {$endif i8086}
       begin
 {$ifdef i8086}
-        if target_info.system in [system_i8086_msdos,system_i8086_win16] then
+        if target_info.system in [system_i8086_msdos,system_i8086_win16,system_i8086_embedded] then
           begin
             if current_settings.x86memorymodel=mm_huge then
               WriteSection(sec_data,'',2);
@@ -1251,7 +1251,8 @@ interface
 {$ifdef i8086}
         case target_info.system of
           system_i8086_msdos,
-          system_i8086_win16:
+          system_i8086_win16,
+          system_i8086_embedded:
             FormatName:='obj';
           else
             internalerror(2014082060);
@@ -1304,7 +1305,7 @@ interface
             idtxt  : 'NASM';
             asmbin : 'nasm';
             asmcmd : '-f $FORMAT -o $OBJ -w-orphan-labels $EXTRAOPT $ASM';
-            supported_targets : [system_i8086_msdos,system_i8086_win16];
+            supported_targets : [system_i8086_msdos,system_i8086_win16,system_i8086_embedded];
             flags : [af_needar,af_no_debug];
             labelprefix : '..@';
             comment : '; ';
@@ -1316,7 +1317,7 @@ interface
             idtxt  : 'NASMOBJ';
             asmbin : 'nasm';
             asmcmd : '-f obj -o $OBJ -w-orphan-labels $EXTRAOPT $ASM';
-            supported_targets : [system_i8086_msdos,system_i8086_win16];
+            supported_targets : [system_i8086_msdos,system_i8086_win16,system_i8086_embedded];
             flags : [af_needar,af_no_debug];
             labelprefix : '..@';
             comment : '; ';