{
    Copyright (c) 1998-2002 by Florian Klaempfl

    This unit contains the PowerPC GAS instruction tables

    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 itcpugas;

{$i fpcdefs.inc}

interface

    uses
      cpubase,cgbase;

    const
      gas_op2str : array[tasmop] of string[14] = ('<none>',
        'add','add.','addo','addo.','addc','addc.','addco','addco.',
        'adde','adde.','addeo','addeo.','addi','addic','addic.','addis',
        'addme','addme.','addmeo','addmeo.','addze','addze.','addzeo',
        'addzeo.','and','and.','andc','andc.','andi.','andis.','b',
        'ba','bl','bla','bc','bca','bcl','bcla','bcctr','bcctrl','bclr',
        'bclrl','cmp','cmpi','cmpl','cmpli','cntlzw','cntlzw.','crand',
        'crandc','creqv','crnand','crnor','cror','crorc','crxor','dcba',
        'dcbf','dcbi','dcbst','dcbt','dcbtst','dcbz','divw','divw.','divwo','divwo.',
        'divwu','divwu.','divwuo','divwuo.','eciwx','ecowx','eieio','eqv',
        'eqv.','extsb','extsb.','extsh','extsh.','fabs','fabs.','fadd',
        'fadd.','fadds','fadds.','fcmpo','fcmpu','fctiw','fctiw.','fctiwz',
        'fctiwz.','fdiv','fdiv.','fdivs','fdivs.','fmadd','fmadd.','fmadds',
        'fmadds.','fmr','fmsub','fmsub.','fmsubs','fmsubs.','fmul','fmul.',
        'fmuls','fmuls.','fnabs','fnabs.','fneg','fneg.','fnmadd',
        'fnmadd.','fnmadds','fnmadds.','fnmsub','fnmsub.','fnmsubs',
        'fnmsubs.','fres','fres.','frsp','frsp.','frsqrte','frsqrte.',
        'fsel','fsel.','fsqrt','fsqrt.','fsqrts','fsqrts.','fsub','fsub.',
        'fsubs','fsubs.','icbi','isync','lbz','lbzu','lbzux','lbzx',
        'lfd','lfdu','lfdux','lfdx','lfs','lfsu','lfsux','lfsx','lha',
        'lhau','lhaux','lhax','lhbrx','lhz','lhzu','lhzux','lhzx','lmw',
        'lswi','lswx','lwarx','lwbrx','lwz','lwzu','lwzux','lwzx','mcrf',
        'mcrfs','mcrxr','mfcr','mffs','mffs.','mfmsr','mfspr','mfsr',
        'mfsrin','mftb','mtcrf','mtfsb0','mtfsb1','mtfsf','mtfsf.',
        'mtfsfi','mtfsfi.','mtmsr','mtspr','mtsr','mtsrin','mulhw',
        'mulhw.','mulhwu','mulhwu.','mulli','mullw','mullw.','mullwo',
        'mullwo.','nand','nand.','neg','neg.','nego','nego.','nor','nor.',
        'or','or.','orc','orc.','ori','oris', 'rfi', 'rlwimi', 'rlwimi.',
        'rlwinm', 'rlwinm.','rlwnm','rlwnm_','sc','slw', 'slw.', 'sraw', 'sraw.',
        'srawi', 'srawi.','srw', 'srw.', 'stb', 'stbu', 'stbux','stbx','stfd',
        'stfdu', 'stfdux', 'stfdx', 'stfiwx', 'stfs', 'stfsu', 'stfsux', 'stfsx',
        'sth', 'sthbrx', 'sthu', 'sthux', 'sthx', 'stmw', 'stswi', 'stswx', 'stw',
        'stwbrx', 'stwcx.', 'stwu', 'stwux', 'stwx', 'subf', 'subf.', 'subfo',
        'subfo.', 'subfc', 'subc.', 'subfco', 'subfco.', 'subfe', 'subfe.',
        'subfeo', 'subfeo.', 'subfic', 'subfme', 'subfme.', 'subfmeo', 'subfmeo.',
        'subfze', 'subfze.', 'subfzeo', 'subfzeo.', 'sync', 'tlbia', 'tlbie',
        'tlbsync', 'tw', 'twi', 'xor', 'xor.', 'xori', 'xoris',
        { some simplified mnemonics }
        'subi', 'subis', 'subic', 'subic.', 'sub', 'sub.', 'subo', 'subo.',
        'subc', 'subc.', 'subco', 'subco.', 'cmpwi', 'cmpw', 'cmplwi', 'cmplw',
        'extlwi', 'extlwi.', 'extrwi', 'extrwi.', 'inslwi', 'inslwi.', 'insrwi',
        'insrwi.', 'rotlwi', 'rotlwi.', 'rotlw', 'rotlw.', 'slwi', 'slwi.',
        'srwi', 'srwi.', 'clrlwi', 'clrlwi.', 'clrrwi', 'clrrwi.', 'clrslwi',
        'clrslwi.', 'blr', 'bctr', 'blrl', 'bctrl', 'crset', 'crclr', 'crmove',
        'crnot', 'mt', 'mf','nop', 'li', 'lis', 'la', 'mr','mr.','not', 'not.',
        'mtcr', 'mtlr', 'mflr','mtctr', 'mfctr', 'mftbu', 'mfxer');

    function gas_regnum_search(const s:string):Tregister;
    function gas_regname(r:Tregister):string;


implementation

    uses
      globtype,globals,
      cutils,verbose, systems;

    const
      gas_regname_table : array[tregisterindex] of string[7] = (
        {$i rppcgas.inc}
      );

      gas_regname_short_table : array[tregisterindex] of string[7] = (
        {$i rppcgss.inc}
      );

      gas_regname_index : array[tregisterindex] of tregisterindex = (
        {$i rppcgri.inc}
      );


    function findreg_by_gasname(const s:string):tregisterindex;
      var
        i,p : tregisterindex;
      begin
        {Binary search.}
        p:=0;
        i:=regnumber_count_bsstart;
        repeat
          if (p+i<=high(tregisterindex)) and (gas_regname_table[gas_regname_index[p+i]]<=s) then
            p:=p+i;
          i:=i shr 1;
        until i=0;
        if gas_regname_table[gas_regname_index[p]]=s then
          findreg_by_gasname:=gas_regname_index[p]
        else
          findreg_by_gasname:=0;
      end;


    function gas_regnum_search(const s:string):Tregister;
      begin
        result:=regnumber_table[findreg_by_gasname(s)];
      end;


    function gas_regname(r:Tregister):string;
      var
        p : longint;
      begin
        p:=findreg_by_number(r);
        if p<>0 then
          {The GNU assembler only accepts numbers and no full register names (at least in older versions). To
           make the assembler code more readable, we define macros at the start of all assembler files we write
           to redefine r1..r31 and f1..f31 to 1..31, and then use the full register names.

           However, we do not do this for smart linked files since that would cause a lot of (mostly useless)
           overhead. In theory, we could also not do it if "-a" is not used. The Mac OS X assembler (which is
           based on GNU as) "natively" supports full register names.}
          if (cs_create_smart in current_settings.moduleswitches) and
             (target_info.system <> system_powerpc_darwin) then
            result:=gas_regname_short_table[p]
          else
            result:=gas_regname_table[p]
        else
          result:=generic_regname(r);
      end;

end.
