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Annotation of gcc/config/out-vax.c, revision 1.1

1.1     ! root        1: /* Subroutines for insn-output.c for Vax.
        !             2:    Copyright (C) 1987 Free Software Foundation, Inc.
        !             3: 
        !             4: This file is part of GNU CC.
        !             5: 
        !             6: GNU CC is free software; you can redistribute it and/or modify
        !             7: it under the terms of the GNU General Public License as published by
        !             8: the Free Software Foundation; either version 1, or (at your option)
        !             9: any later version.
        !            10: 
        !            11: GNU CC is distributed in the hope that it will be useful,
        !            12: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            14: GNU General Public License for more details.
        !            15: 
        !            16: You should have received a copy of the GNU General Public License
        !            17: along with GNU CC; see the file COPYING.  If not, write to
        !            18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            19: 
        !            20: #include <stdio.h>
        !            21: 
        !            22: print_operand_address (file, addr)
        !            23:      FILE *file;
        !            24:      register rtx addr;
        !            25: {
        !            26:   register rtx reg1, reg2, breg, ireg;
        !            27:   rtx offset;
        !            28: 
        !            29:  retry:
        !            30:   switch (GET_CODE (addr))
        !            31:     {
        !            32:     case MEM:
        !            33:       fprintf (file, "*");
        !            34:       addr = XEXP (addr, 0);
        !            35:       goto retry;
        !            36: 
        !            37:     case REG:
        !            38:       fprintf (file, "(%s)", reg_names[REGNO (addr)]);
        !            39:       break;
        !            40: 
        !            41:     case PRE_DEC:
        !            42:       fprintf (file, "-(%s)", reg_names[REGNO (XEXP (addr, 0))]);
        !            43:       break;
        !            44: 
        !            45:     case POST_INC:
        !            46:       fprintf (file, "(%s)+", reg_names[REGNO (XEXP (addr, 0))]);
        !            47:       break;
        !            48: 
        !            49:     case PLUS:
        !            50:       reg1 = 0;        reg2 = 0;
        !            51:       ireg = 0;        breg = 0;
        !            52:       offset = 0;
        !            53:       if (CONSTANT_ADDRESS_P (XEXP (addr, 0))
        !            54:          || GET_CODE (XEXP (addr, 0)) == MEM)
        !            55:        {
        !            56:          offset = XEXP (addr, 0);
        !            57:          addr = XEXP (addr, 1);
        !            58:        }
        !            59:       else if (CONSTANT_ADDRESS_P (XEXP (addr, 1))
        !            60:               || GET_CODE (XEXP (addr, 1)) == MEM)
        !            61:        {
        !            62:          offset = XEXP (addr, 1);
        !            63:          addr = XEXP (addr, 0);
        !            64:        }
        !            65:       if (GET_CODE (addr) != PLUS)
        !            66:        ;
        !            67:       else if (GET_CODE (XEXP (addr, 0)) == MULT)
        !            68:        {
        !            69:          reg1 = XEXP (addr, 0);
        !            70:          addr = XEXP (addr, 1);
        !            71:        }
        !            72:       else if (GET_CODE (XEXP (addr, 1)) == MULT)
        !            73:        {
        !            74:          reg1 = XEXP (addr, 1);
        !            75:          addr = XEXP (addr, 0);
        !            76:        }
        !            77:       else if (GET_CODE (XEXP (addr, 0)) == REG)
        !            78:        {
        !            79:          reg1 = XEXP (addr, 0);
        !            80:          addr = XEXP (addr, 1);
        !            81:        }
        !            82:       else if (GET_CODE (XEXP (addr, 1)) == REG)
        !            83:        {
        !            84:          reg1 = XEXP (addr, 1);
        !            85:          addr = XEXP (addr, 0);
        !            86:        }
        !            87:       if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT)
        !            88:        {
        !            89:          if (reg1 == 0)
        !            90:            reg1 = addr;
        !            91:          else
        !            92:            reg2 = addr;
        !            93:          addr = 0;
        !            94:        }
        !            95:       if (offset != 0)
        !            96:        {
        !            97:          if (addr != 0) abort ();
        !            98:          addr = offset;
        !            99:        }
        !           100:       if (reg1 != 0 && GET_CODE (reg1) == MULT)
        !           101:        {
        !           102:          breg = reg2;
        !           103:          ireg = reg1;
        !           104:        }
        !           105:       else if (reg2 != 0 && GET_CODE (reg2) == MULT)
        !           106:        {
        !           107:          breg = reg1;
        !           108:          ireg = reg2;
        !           109:        }
        !           110:       else if (reg2 != 0 || GET_CODE (addr) == MEM)
        !           111:        {
        !           112:          breg = reg2;
        !           113:          ireg = reg1;
        !           114:        }
        !           115:       else
        !           116:        {
        !           117:          breg = reg1;
        !           118:          ireg = reg2;
        !           119:        }
        !           120:       if (addr != 0)
        !           121:        output_address (offset);
        !           122:       if (breg != 0)
        !           123:        {
        !           124:          if (GET_CODE (breg) != REG)
        !           125:            abort ();
        !           126:          fprintf (file, "(%s)", reg_names[REGNO (breg)]);
        !           127:        }
        !           128:       if (ireg != 0)
        !           129:        {
        !           130:          if (GET_CODE (ireg) == MULT)
        !           131:            ireg = XEXP (ireg, 0);
        !           132:          if (GET_CODE (ireg) != REG)
        !           133:            abort ();
        !           134:          fprintf (file, "[%s]", reg_names[REGNO (ireg)]);
        !           135:        }
        !           136:       break;
        !           137: 
        !           138:     default:
        !           139:       output_addr_const (file, addr);
        !           140:     }
        !           141: }

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