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[/] [thor/] [trunk/] [FT64v5/] [software/] [AS64/] [source/] [dsd7.cpp] - Blame information for rev 48

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// ============================================================================
//        __
//   \\__/ o\    (C) 2016  Robert Finch, Stratford
//    \  __ /    All rights reserved.
//     \/_//     robfinch<remove>@finitron.ca
//       ||
//
// A64 - Assembler
//  - 64 bit CPU
//
// This source file is free software: you can redistribute it and/or modify 
// it under the terms of the GNU Lesser General Public License as published 
// by the Free Software Foundation, either version 3 of the License, or     
// (at your option) any later version.                                      
//                                                                          
// This source file 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, see <http://www.gnu.org/licenses/>.    
//                                                                          
// ============================================================================
//
#include "stdafx.h"
 
static void process_shifti(int oc, int funct3, int funct7);
static void ProcessEOL(int opt);
extern void process_message();
static void mem_operand(int64_t *disp, int *regA, int *regB);
 
extern int first_rodata;
extern int first_data;
extern int first_bss;
extern int htable[100000];
extern int htblcnt[100000];
extern int htblmax;
extern int pass;
 
static int64_t ca;
 
extern int use_gp;
 
#define OPT64     0
#define OPTX32    1
#define OPTLUI0   0
#define LB16    -31653LL
 
// ----------------------------------------------------------------------------
// Return the register number or -1 if not a register.
// Parses pretty register names like SP or BP in addition to r1,r2,etc.
// ----------------------------------------------------------------------------
 
static int getRegisterX()
{
    int reg;
 
    while(isspace(*inptr)) inptr++;
    switch(*inptr) {
    case 'r': case 'R':
        if ((inptr[1]=='a' || inptr[1]=='A') && !isIdentChar(inptr[2])) {
            inptr += 2;
            NextToken();
            return 29;
        }
         if (isdigit(inptr[1])) {
             reg = inptr[1]-'0';
             if (isdigit(inptr[2])) {
                 reg = 10 * reg + (inptr[2]-'0');
                 if (isdigit(inptr[3])) {
                     reg = 10 * reg + (inptr[3]-'0');
                     if (isIdentChar(inptr[4]))
                         return -1;
                     inptr += 4;
                     NextToken();
                     return reg;
                 }
                 else if (isIdentChar(inptr[3]))
                     return -1;
                 else {
                     inptr += 3;
                     NextToken();
                     return reg;
                 }
             }
             else if (isIdentChar(inptr[2]))
                 return -1;
             else {
                 inptr += 2;
                 NextToken();
                 return reg;
             }
         }
         else return -1;
    case 'a': case 'A':
         if (isdigit(inptr[1])) {
             reg = inptr[1]-'0' + 18;
             if (isIdentChar(inptr[2]))
                 return -1;
             else {
                 inptr += 2;
                 NextToken();
                 return reg;
             }
         }
         else return -1;
    case 'b': case 'B':
        if ((inptr[1]=='P' || inptr[1]=='p') && !isIdentChar(inptr[2])) {
            inptr += 2;
            NextToken();
            return 30;
        }
        break;
    case 'f': case 'F':
        if ((inptr[1]=='P' || inptr[1]=='p') && !isIdentChar(inptr[2])) {
            inptr += 2;
            NextToken();
            return 2;
        }
        break;
    case 'g': case 'G':
        if ((inptr[1]=='P' || inptr[1]=='p') && !isIdentChar(inptr[2])) {
            inptr += 2;
            NextToken();
            return 26;
        }
        break;
    case 'p': case 'P':
        if ((inptr[1]=='C' || inptr[1]=='c') && !isIdentChar(inptr[2])) {
            inptr += 2;
            NextToken();
            return 31;
        }
        break;
    case 's': case 'S':
        if ((inptr[1]=='P' || inptr[1]=='p') && !isIdentChar(inptr[2])) {
            inptr += 2;
            NextToken();
            return 31;
        }
        break;
    case 't': case 'T':
         if (isdigit(inptr[1])) {
             reg = inptr[1]-'0' + 26;
             if (isIdentChar(inptr[2]))
                 return -1;
             else {
                 inptr += 2;
                 NextToken();
                 return reg;
             }
         }
        if ((inptr[1]=='P' || inptr[1]=='p') && !isIdentChar(inptr[2])) {
            inptr += 2;
            NextToken();
            return 15;
        }
        /*
        if ((inptr[1]=='R' || inptr[1]=='r') && !isIdentChar(inptr[2])) {
            inptr += 2;
            NextToken();
            return 24;
        }
        */
        break;
        // lr
    case 'l': case 'L':
        if ((inptr[1]=='R' || inptr[1]=='r') && !isIdentChar(inptr[2])) {
            inptr += 2;
            NextToken();
            return 29;
        }
        break;
        // xlr
    case 'x': case 'X':
        if ((inptr[1]=='L' || inptr[1]=='l') && (inptr[2]=='R' || inptr[2]=='r') &&
                        !isIdentChar(inptr[3])) {
            inptr += 3;
            NextToken();
            return 28;
        }
        break;
    default:
        return -1;
    }
    return -1;
}
 
static int isdelim(char ch)
{
    return ch==',' || ch=='[' || ch=='(' || ch==']' || ch==')' || ch=='.';
}
 
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
 
static int getCodeareg()
{
    int pr;
 
    SkipSpaces();
    if (inptr[0]=='c' || inptr[0]=='C') {
         if (isdigit(inptr[1]) && (inptr[2]==',' || isdelim(inptr[2]) || isspace(inptr[2]))) {
              pr = (inptr[1]-'0');
              inptr += 2;
         }
         else if (isdigit(inptr[1]) && isdigit(inptr[2]) && (inptr[3]==',' || isdelim(inptr[3]) || isspace(inptr[3]))) {
              pr = ((inptr[1]-'0') * 10) + (inptr[2]-'0');
              inptr += 3;
         }
         else
             return -1;
    }
    else
        return -1;
     NextToken();
     return pr;
}
 
 
// ----------------------------------------------------------------------------
// Get the friendly name of a special purpose register.
// ----------------------------------------------------------------------------
 
static int DSD7_getSprRegister()
{
    int reg;
    int pr;
 
    while(isspace(*inptr)) inptr++;
    reg = getCodeareg();
    if (reg >= 0) {
       reg |= 0x10;
       return reg;
    }
    if (inptr[0]=='p' || inptr[0]=='P') {
         if (isdigit(inptr[1]) && isdigit(inptr[2])) {
              pr = ((inptr[1]-'0' * 10) + (inptr[2]-'0'));
              if (!isIdentChar(inptr[3])) {
                  inptr += 3;
                  NextToken();
                  return pr | 0x40;
              }
         }
         else if (isdigit(inptr[1])) {
              pr = (inptr[1]-'0');
              if (!isIdentChar(inptr[2])) {
                  inptr += 2;
                  NextToken();
                  return pr | 0x40;
              }
         }
     }
 
    while(isspace(*inptr)) inptr++;
    switch(*inptr) {
 
    case '0':
    case '1':
    case '2':
    case '3':
    case '4':
    case '5':
    case '6':
    case '7':
    case '8':
    case '9':
         NextToken();
         NextToken();
         return (int)ival.low & 0xFFF;
 
    // arg1
    case 'a': case 'A':
         if ((inptr[1]=='r' || inptr[1]=='R') &&
             (inptr[2]=='g' || inptr[2]=='G') &&
             (inptr[3]=='1' || inptr[3]=='1') &&
             !isIdentChar(inptr[4])) {
             inptr += 4;
             NextToken();
             return 58;
         }
         break;
    // bear
    case 'b': case 'B':
         if ((inptr[1]=='e' || inptr[1]=='E') &&
             (inptr[2]=='a' || inptr[2]=='A') &&
             (inptr[3]=='r' || inptr[3]=='R') &&
             !isIdentChar(inptr[4])) {
             inptr += 4;
             NextToken();
             return 11;
         }
         break;
    // cas clk cr0 cr3 cs CPL
    case 'c': case 'C':
         if ((inptr[1]=='a' || inptr[1]=='A') &&
             (inptr[2]=='s' || inptr[2]=='S') &&
             !isIdentChar(inptr[3])) {
             inptr += 3;
             NextToken();
             return 44;
         }
         if ((inptr[1]=='l' || inptr[1]=='L') &&
             (inptr[2]=='k' || inptr[2]=='K') &&
             !isIdentChar(inptr[3])) {
             inptr += 3;
             NextToken();
             return 0x06;
         }
         if ((inptr[1]=='r' || inptr[1]=='R') &&
             (inptr[2]=='0') &&
             !isIdentChar(inptr[3])) {
             inptr += 3;
             NextToken();
             return 0x00;
         }
         if ((inptr[1]=='r' || inptr[1]=='R') &&
             (inptr[2]=='3') &&
             !isIdentChar(inptr[3])) {
             inptr += 3;
             NextToken();
             return 0x03;
         }
        if ((inptr[1]=='s' || inptr[1]=='S') &&
            !isIdentChar(inptr[2])) {
            if (inptr[2]=='.') {
               if ((inptr[3]=='l' || inptr[3]=='L') &&
                   (inptr[4]=='m' || inptr[4]=='M') &&
                   (inptr[5]=='t' || inptr[5]=='T') &&
                   !isIdentChar(inptr[6])) {
                       inptr += 6;
                       NextToken();
                       return 0x2F;
               }
            }
            inptr += 2;
            NextToken();
            return 0x27;
        }
         if ((inptr[1]=='p' || inptr[1]=='P') &&
             (inptr[2]=='l' || inptr[2]=='L') &&
             !isIdentChar(inptr[3])) {
             inptr += 3;
             NextToken();
             return 42;
         }
         break;
 
    // dbad0 dbad1 dbctrl dpc dsp ds
    case 'd': case 'D':
         if ((inptr[1]=='b' || inptr[1]=='B') &&
             (inptr[2]=='a' || inptr[2]=='A') &&
             (inptr[3]=='d' || inptr[3]=='D') &&
             (inptr[4]=='0' || inptr[4]=='0') &&
             !isIdentChar(inptr[5])) {
             inptr += 5;
             NextToken();
             return 50;
         }
         if ((inptr[1]=='b' || inptr[1]=='B') &&
             (inptr[2]=='a' || inptr[2]=='A') &&
             (inptr[3]=='d' || inptr[3]=='D') &&
             (inptr[4]=='1' || inptr[4]=='1') &&
             !isIdentChar(inptr[5])) {
             inptr += 5;
             NextToken();
             return 51;
         }
         if ((inptr[1]=='b' || inptr[1]=='B') &&
             (inptr[2]=='a' || inptr[2]=='A') &&
             (inptr[3]=='d' || inptr[3]=='D') &&
             (inptr[4]=='2' || inptr[4]=='2') &&
             !isIdentChar(inptr[5])) {
             inptr += 5;
             NextToken();
             return 52;
         }
         if ((inptr[1]=='b' || inptr[1]=='B') &&
             (inptr[2]=='a' || inptr[2]=='A') &&
             (inptr[3]=='d' || inptr[3]=='D') &&
             (inptr[4]=='3' || inptr[4]=='3') &&
             !isIdentChar(inptr[5])) {
             inptr += 5;
             NextToken();
             return 53;
         }
         if ((inptr[1]=='b' || inptr[1]=='B') &&
             (inptr[2]=='c' || inptr[2]=='C') &&
             (inptr[3]=='t' || inptr[3]=='T') &&
             (inptr[4]=='r' || inptr[4]=='R') &&
             (inptr[5]=='l' || inptr[5]=='L') &&
             !isIdentChar(inptr[6])) {
             inptr += 6;
             NextToken();
             return 54;
         }
         if ((inptr[1]=='p' || inptr[1]=='P') &&
             (inptr[2]=='c' || inptr[2]=='C') &&
             !isIdentChar(inptr[3])) {
             inptr += 3;
             NextToken();
             return 7;
         }
         if (
             (inptr[1]=='b' || inptr[1]=='B') &&
             (inptr[2]=='p' || inptr[2]=='P') &&
             (inptr[3]=='c' || inptr[3]=='C') &&
             !isIdentChar(inptr[4])) {
             inptr += 4;
             NextToken();
             return 7;
         }
         if ((inptr[1]=='s' || inptr[1]=='S') &&
             (inptr[2]=='p' || inptr[2]=='P') &&
             !isIdentChar(inptr[3])) {
             inptr += 3;
             NextToken();
             return 16;
         }
        if ((inptr[1]=='s' || inptr[1]=='S') &&
            !isIdentChar(inptr[2])) {
            if (inptr[2]=='.') {
               if ((inptr[3]=='l' || inptr[3]=='L') &&
                   (inptr[4]=='m' || inptr[4]=='M') &&
                   (inptr[5]=='t' || inptr[5]=='T') &&
                   !isIdentChar(inptr[6])) {
                       inptr += 6;
                       NextToken();
                       return 0x29;
               }
            }
            inptr += 2;
            NextToken();
            return 0x21;
        }
         break;
 
    // ea epc esp es
    case 'e': case 'E':
         if ((inptr[1]=='a' || inptr[1]=='A') &&
             !isIdentChar(inptr[2])) {
             inptr += 2;
             NextToken();
             return 40;
         }
         if ((inptr[1]=='p' || inptr[1]=='P') &&
             (inptr[2]=='c' || inptr[2]=='C') &&
             !isIdentChar(inptr[3])) {
             inptr += 3;
             NextToken();
             return 9;
         }
         if ((inptr[1]=='s' || inptr[1]=='S') &&
             (inptr[2]=='p' || inptr[2]=='P') &&
             !isIdentChar(inptr[3])) {
             inptr += 3;
             NextToken();
             return 17;
         }
        if ((inptr[1]=='s' || inptr[1]=='S') &&
            !isIdentChar(inptr[2])) {
            if (inptr[2]=='.') {
               if ((inptr[3]=='l' || inptr[3]=='L') &&
                   (inptr[4]=='m' || inptr[4]=='M') &&
                   (inptr[5]=='t' || inptr[5]=='T') &&
                   !isIdentChar(inptr[6])) {
                       inptr += 6;
                       NextToken();
                       return 0x2A;
               }
            }
            inptr += 2;
            NextToken();
            return 0x22;
        }
         break;
 
    // fault_pc fs
    case 'f': case 'F':
         if ((inptr[1]=='a' || inptr[1]=='A') &&
             (inptr[2]=='u' || inptr[2]=='U') &&
             (inptr[3]=='l' || inptr[3]=='L') &&
             (inptr[4]=='t' || inptr[4]=='T') &&
             (inptr[5]=='_' || inptr[5]=='_') &&
             (inptr[6]=='p' || inptr[6]=='P') &&
             (inptr[7]=='c' || inptr[7]=='C') &&
             !isIdentChar(inptr[8])) {
             inptr += 8;
             NextToken();
             return 0x08;
         }
        if ((inptr[1]=='s' || inptr[1]=='S') &&
            !isIdentChar(inptr[2])) {
            if (inptr[2]=='.') {
               if ((inptr[3]=='l' || inptr[3]=='L') &&
                   (inptr[4]=='m' || inptr[4]=='M') &&
                   (inptr[5]=='t' || inptr[5]=='T') &&
                   !isIdentChar(inptr[6])) {
                       inptr += 6;
                       NextToken();
                       return 0x2B;
               }
            }
            inptr += 2;
            NextToken();
            return 0x23;
        }
         break;
 
    // gs GDT
    case 'g': case 'G':
        if ((inptr[1]=='s' || inptr[1]=='S') &&
            !isIdentChar(inptr[2])) {
            if (inptr[2]=='.') {
               if ((inptr[3]=='l' || inptr[3]=='L') &&
                   (inptr[4]=='m' || inptr[4]=='M') &&
                   (inptr[5]=='t' || inptr[5]=='T') &&
                   !isIdentChar(inptr[6])) {
                       inptr += 6;
                       NextToken();
                       return 0x2C;
               }
            }
            inptr += 2;
            NextToken();
            return 0x24;
        }
        if ((inptr[1]=='d' || inptr[1]=='D') &&
           (inptr[2]=='t' || inptr[2]=='T') &&
            !isIdentChar(inptr[3])) {
            inptr += 3;
            NextToken();
            return 41;
        }
        break;
 
    // history
    case 'h': case 'H':
         if ((inptr[1]=='i' || inptr[1]=='I') &&
             (inptr[2]=='s' || inptr[2]=='S') &&
             (inptr[3]=='t' || inptr[3]=='T') &&
             (inptr[4]=='o' || inptr[4]=='O') &&
             (inptr[5]=='r' || inptr[5]=='R') &&
             (inptr[6]=='y' || inptr[6]=='Y') &&
             !isIdentChar(inptr[7])) {
             inptr += 7;
             NextToken();
             return 0x0D;
         }
        if ((inptr[1]=='s' || inptr[1]=='S') &&
            !isIdentChar(inptr[2])) {
            if (inptr[2]=='.') {
               if ((inptr[3]=='l' || inptr[3]=='L') &&
                   (inptr[4]=='m' || inptr[4]=='M') &&
                   (inptr[5]=='t' || inptr[5]=='T') &&
                   !isIdentChar(inptr[6])) {
                       inptr += 6;
                       NextToken();
                       return 0x2D;
               }
            }
            inptr += 2;
            NextToken();
            return 0x25;
        }
         break;
 
    // ipc isp ivno
    case 'i': case 'I':
         if ((inptr[1]=='p' || inptr[1]=='P') &&
             (inptr[2]=='c' || inptr[2]=='C') &&
             !isIdentChar(inptr[3])) {
             inptr += 3;
             NextToken();
             return 8;
         }
         if ((inptr[1]=='s' || inptr[1]=='S') &&
             (inptr[2]=='p' || inptr[2]=='P') &&
             !isIdentChar(inptr[3])) {
             inptr += 3;
             NextToken();
             return 15;
         }
         if ((inptr[1]=='v' || inptr[1]=='V') &&
             (inptr[2]=='n' || inptr[2]=='N') &&
             (inptr[3]=='o' || inptr[3]=='O') &&
             !isIdentChar(inptr[4])) {
             inptr += 4;
             NextToken();
             return 0x0C;
         }
         break;
 
 
    // LC LDT
    case 'l': case 'L':
         if ((inptr[1]=='c' || inptr[1]=='C') &&
             !isIdentChar(inptr[2])) {
             inptr += 2;
             NextToken();
             return 0x33;
         }
         if ((inptr[1]=='d' || inptr[1]=='D') &&
            (inptr[2]=='t' || inptr[2]=='T') &&
             !isIdentChar(inptr[3])) {
             inptr += 3;
             NextToken();
             return 40;
         }
         break;
 
    // pregs
    case 'p': case 'P':
         if ((inptr[1]=='r' || inptr[1]=='R') &&
             (inptr[2]=='e' || inptr[2]=='E') &&
             (inptr[3]=='g' || inptr[3]=='G') &&
             (inptr[4]=='s' || inptr[4]=='S') &&
             !isIdentChar(inptr[5])) {
             inptr += 5;
             NextToken();
             return 52;
         }
         break;
 
    // rand
    case 'r': case 'R':
         if ((inptr[1]=='a' || inptr[1]=='A') &&
             (inptr[2]=='n' || inptr[2]=='N') &&
             (inptr[3]=='d' || inptr[3]=='D') &&
             !isIdentChar(inptr[4])) {
             inptr += 4;
             NextToken();
             return 0x12;
         }
         break;
    // ss_ll srand1 srand2 ss segsw segbase seglmt segacr
    case 's': case 'S':
         if ((inptr[1]=='s' || inptr[1]=='S') &&
             (inptr[2]=='_' || inptr[2]=='_') &&
             (inptr[3]=='l' || inptr[3]=='L') &&
             (inptr[4]=='l' || inptr[4]=='L') &&
             !isIdentChar(inptr[5])) {
             inptr += 5;
             NextToken();
             return 0x1A;
         }
         if ((inptr[1]=='r' || inptr[1]=='R') &&
             (inptr[2]=='a' || inptr[2]=='A') &&
             (inptr[3]=='n' || inptr[3]=='N') &&
             (inptr[4]=='d' || inptr[4]=='D') &&
             (inptr[5]=='1') &&
             !isIdentChar(inptr[6])) {
             inptr += 6;
             NextToken();
             return 0x10;
         }
         if ((inptr[1]=='r' || inptr[1]=='R') &&
             (inptr[2]=='a' || inptr[2]=='A') &&
             (inptr[3]=='n' || inptr[3]=='N') &&
             (inptr[4]=='d' || inptr[4]=='D') &&
             (inptr[5]=='2') &&
             !isIdentChar(inptr[6])) {
             inptr += 6;
             NextToken();
             return 0x11;
         }
         if ((inptr[1]=='p' || inptr[1]=='P') &&
             (inptr[2]=='r' || inptr[2]=='R') &&
             isdigit(inptr[3]) && isdigit(inptr[4]) &&
             !isIdentChar(inptr[5])) {
             inptr += 5;
             NextToken();
             return (inptr[3]-'0')*10 + (inptr[4]-'0');
         }
        if ((inptr[1]=='s' || inptr[1]=='S') &&
            !isIdentChar(inptr[2])) {
            if (inptr[2]=='.') {
               if ((inptr[3]=='l' || inptr[3]=='L') &&
                   (inptr[4]=='m' || inptr[4]=='M') &&
                   (inptr[5]=='t' || inptr[5]=='T') &&
                   !isIdentChar(inptr[6])) {
                       inptr += 6;
                       NextToken();
                       return 0x2E;
               }
            }
            inptr += 2;
            NextToken();
            return 0x26;
         }
         // segxxx
         if ((inptr[1]=='e' || inptr[1]=='E') &&
             (inptr[2]=='g' || inptr[2]=='G')) {
             // segsw
             if ((inptr[3]=='s' || inptr[3]=='S') &&
                  (inptr[4]=='w' || inptr[4]=='W') &&
                  !isIdentChar(inptr[5])) {
               inptr += 5;
               NextToken();
               return 43;
             }
             // segbase
             if ((inptr[3]=='b' || inptr[3]=='B') &&
                  (inptr[4]=='a' || inptr[4]=='A') &&
                  (inptr[5]=='s' || inptr[5]=='S') &&
                  (inptr[6]=='e' || inptr[6]=='E') &&
                  !isIdentChar(inptr[7])) {
               inptr += 7;
               NextToken();
               return 44;
             }
             // seglmt
             if ((inptr[3]=='l' || inptr[3]=='L') &&
                  (inptr[4]=='m' || inptr[4]=='M') &&
                  (inptr[5]=='t' || inptr[5]=='T') &&
                  !isIdentChar(inptr[6])) {
               inptr += 6;
               NextToken();
               return 45;
             }
             // segacr
             if ((inptr[3]=='a' || inptr[3]=='A') &&
                  (inptr[4]=='c' || inptr[4]=='C') &&
                  (inptr[5]=='r' || inptr[5]=='R') &&
                  !isIdentChar(inptr[6])) {
               inptr += 6;
               NextToken();
               return 47;
             }
         }
         break;
 
    // tag tick 
    case 't': case 'T':
         if ((inptr[1]=='i' || inptr[1]=='I') &&
             (inptr[2]=='c' || inptr[2]=='C') &&
             (inptr[3]=='k' || inptr[3]=='K') &&
             !isIdentChar(inptr[4])) {
             inptr += 4;
             NextToken();
             return 0x32;
         }
         if ((inptr[1]=='a' || inptr[1]=='A') &&
             (inptr[2]=='g' || inptr[2]=='G') &&
             !isIdentChar(inptr[3])) {
             inptr += 3;
             NextToken();
             return 41;
         }
         break;
 
    // vbr
    case 'v': case 'V':
         if ((inptr[1]=='b' || inptr[1]=='B') &&
             (inptr[2]=='r' || inptr[2]=='R') &&
             !isIdentChar(inptr[3])) {
             inptr += 3;
             NextToken();
             return 10;
         }
         break;
    case 'z': case 'Z':
        if ((inptr[1]=='s' || inptr[1]=='S') &&
            !isIdentChar(inptr[2])) {
            if (inptr[2]=='.') {
               if ((inptr[3]=='l' || inptr[3]=='L') &&
                   (inptr[4]=='m' || inptr[4]=='M') &&
                   (inptr[5]=='t' || inptr[5]=='T') &&
                   !isIdentChar(inptr[6])) {
                       inptr += 6;
                       NextToken();
                       return 0x28;
               }
            }
            inptr += 2;
            NextToken();
            return 0x20;
        }
        break;
    }
    return -1;
}
 
// ---------------------------------------------------------------------------
// Process the size specifier for a FP instruction.
// ---------------------------------------------------------------------------
static int GetFPSize()
{
        int sz;
 
    sz = 'q';
    if (*inptr=='.') {
        inptr++;
        if (strchr("sdtqSDTQ",*inptr)) {
            sz = tolower(*inptr);
            inptr++;
        }
        else
            printf("Illegal float size.\r\n");
    }
        switch(sz) {
        case 's':       sz = 0; break;
        case 'd':       sz = 1; break;
        case 't':       sz = 2; break;
        case 'q':       sz = 3; break;
        default:        sz = 3; break;
        }
        return (sz);
}
 
// ---------------------------------------------------------------------------
// ---------------------------------------------------------------------------
 
static void emit_insn(int64_t oc, int can_compress, int sz)
{
    int ndx;
 
    if (pass==3 && can_compress && gCanCompress) {
       for (ndx = 0; ndx < htblmax; ndx++) {
         if ((int)oc == hTable[ndx].opcode) {
           hTable[ndx].count++;
           return;
         }
       }
       if (htblmax < 100000) {
          hTable[htblmax].opcode = (int)oc;
          hTable[htblmax].count = 1;
          htblmax++;
          return;
       }
       printf("Too many instructions.\r\n");
       return;
    }
    if (pass > 3) {
     if (can_compress && gCanCompress) {
       for (ndx = 0; ndx < htblmax; ndx++) {
         if ((int)oc == hTable[ndx].opcode) {
           emitCode((ndx << 6)|0x1F);
                   num_bytes += 2;
                   num_insns += 1;
           return;
         }
       }
     }
     emitCode(oc & 65535);
     num_bytes += 2;
         if (sz==2)
                emitCode((int)(oc >> 16));
            num_bytes += 2;
    }
        if (sz==3) {
                emitCode((int)(oc >> 16));
            num_bytes += 2;
                emitCode(oc >> 32);
            num_bytes += 2;
        }
    num_insns += 1;
    /*
    if (processOpt==2) {
       for (ndx = 0; ndx < htblmax; ndx++) {
         if (oc == hTable[ndx].opcode) {
           printf("found opcode\n");
           emitAlignedCode(((ndx & 8) << 4)|0x50|(ndx & 0x7));
           emitCode(ndx >> 4);
           return;
         }
       }
     emitAlignedCode(oc & 255);
     emitCode((oc >> 8) & 255);
     emitCode((oc >> 16) & 255);
     emitCode((oc >> 24) & 255);
    }
    else {
     emitAlignedCode(oc & 255);
     emitCode((oc >> 8) & 255);
     emitCode((oc >> 16) & 255);
     emitCode((oc >> 24) & 255);
    }
    */
}
 
// ---------------------------------------------------------------------------
// addi r1,r2,#1234
// ---------------------------------------------------------------------------
 
static void process_riop(int opcode6)
{
    int Ra;
    int Rt;
    char *p;
    int64_t val;
 
    p = inptr;
    Rt = getRegisterX();
    need(',');
    Ra = getRegisterX();
    need(',');
    NextToken();
    val = expr();
        if (opcode6==0x07)      { // subi
                val = -val;
                opcode6 = 0x04; // change to addi
        }
    if (val < LB16 || val > 32767LL) {
                if (opcode6==0x09) {    // ORI / LDI
                        emit_insn((val<<16)|(Rt << 11)|(Ra << 6)|0x0B,0,3);
                }
                else {
                        emit_insn((0x8000 << 16)|(Rt << 11)|(Ra << 6)|opcode6,0,2);
                        emit_insn(val,0,2);
                }
    }
    else
                emit_insn(((val & 0xFFFF) << 16)|(Rt << 11)|(Ra << 6)|opcode6,!expand_flag,2);
}
 
// ---------------------------------------------------------------------------
// ---------------------------------------------------------------------------
 
static void process_rrop(int funct6)
{
    int Ra,Rb,Rt;
    char *p;
 
    p = inptr;
    Rt = getRegisterX();
    need(',');
    Ra = getRegisterX();
    need(',');
    NextToken();
    if (token=='#') {
        inptr = p;
        process_riop(funct6);
        return;
    }
    prevToken();
    Rb = getRegisterX();
    //prevToken();
    emit_insn((funct6<<26)|(Rt<<16)|(Rb<<11)|(Ra<<6)|0x0C,!expand_flag,2);
}
 
// ---------------------------------------------------------------------------
// jmp main
// jsr [r19]
// jmp (tbl,r2)
// jsr [gp+r20]
// ---------------------------------------------------------------------------
 
static void process_jal(int oc)
{
    int64_t addr;
    int Ra;
    int Rt;
 
        Ra = 0;
    Rt = 0;
    NextToken();
    if (token=='(' || token=='[') {
j1:
       Ra = getRegisterX();
       if (Ra==-1) {
           printf("Expecting a register\r\n");
           return;
       }
       // Simple jmp [Rn]
       else {
            if (token != ')' && token!=']')
                printf("Missing close bracket\r\n");
            emit_insn((Ra << 6)|(Rt<<11)|0x15,0,2);
            return;
       }
    }
    prevToken();
    Rt = getRegisterX();
    if (Rt >= 0) {
        need(',');
        NextToken();
        // jal Rt,[Ra]
        if (token=='(' || token=='[')
           goto j1;
    }
    else
        Rt = 0;
        addr = expr();
    // d(Rn)? 
    NextToken();
    if (token=='(' || token=='[') {
        Ra = getRegisterX();
        if (Ra==-1) {
            printf("Illegal jump address mode.\r\n");
            Ra = 0;
        }
                if (Ra==31)     // program counter relative ?
                        addr -= code_address;
        }
 
        if (addr < LB16 || addr > 32767)
                emit_insn((addr << 16) | (Rt << 11) | (Ra << 6) | 0x11,0,3);
        else
                emit_insn((addr << 16) | (Rt << 11) | (Ra << 6) | 0x15,!expand_flag,2);
}
 
// ---------------------------------------------------------------------------
// subui r1,r2,#1234
// ---------------------------------------------------------------------------
/*
static void process_riop(int oc)
{
    int Ra;
    int Rt;
    char *p;
    int64_t val;
 
    p = inptr;
    Rt = getRegisterX();
    need(',');
    Ra = getRegisterX();
    need(',');
    NextToken();
    val = expr();
 
   if (lastsym != (SYM *)NULL)
       emitImm16(val,!lastsym->defined);
   else
       emitImm16(val,0);
 
    emitImm16(val,lastsym!=(SYM*)NULL);
    emitAlignedCode(oc);
    if (bGen)
    if (lastsym && !use_gp) {
        if( lastsym->segment < 5)
        sections[segment+7].AddRel(sections[segment].index,((lastsym->ord+1) << 32) | 3 | (lastsym->isExtern ? 128 : 0) |
        (lastsym->segment==codeseg ? code_bits << 8 : data_bits << 8));
    }
    emitCode(Ra);
    emitCode(Rt);
    emitCode(val & 255);
    emitCode((val >> 8) & 255);
}
*/
// ---------------------------------------------------------------------------
// fabs.d fp1,fp2[,rm]
// ---------------------------------------------------------------------------
 
static void process_fprop(int oc)
{
    int Ra;
    int Rt;
    char *p;
    int fmt;
    int rm;
 
    rm = 0;
    fmt = GetFPSize();
    p = inptr;
    if (oc==0x01)        // fcmp
        Rt = getRegisterX();
    else
        Rt = getFPRegister();
    need(',');
    Ra = getFPRegister();
    if (token==',')
       rm = getFPRoundMode();
    prevToken();
    emit_insn(
                        (fmt << 27)|
                        (rm << 24)|
                        (Rt << 18)|
                        (oc << 12)|
                        (Ra << 6) |
                        0x36,!expand_flag,2
                        );
}
 
// ---------------------------------------------------------------------------
// fadd.d fp1,fp2,fp12[,rm]
// fcmp.d r1,fp3,fp10[,rm]
// ---------------------------------------------------------------------------
 
static void process_fprrop(int oc)
{
    int Ra;
    int Rb;
    int Rt;
    char *p;
    int fmt;
    int rm;
 
    rm = 0;
    fmt = GetFPSize();
    p = inptr;
    if (oc==0x01)        // fcmp
        Rt = getRegisterX();
    else
        Rt = getFPRegister();
    need(',');
    Ra = getFPRegister();
    need(',');
    Rb = getFPRegister();
    if (token==',')
       rm = getFPRoundMode();
    prevToken();
    emit_insn(
                        (oc << 29)|
                        (fmt << 27)|
                        (rm << 24)|
                        (Rt << 18)|
                        (Rb << 12)|
                        (Ra << 6) |
                        0x36,!expand_flag,2
                        );
}
 
// ---------------------------------------------------------------------------
// fcx r0,#2
// fdx r1,#0
// ---------------------------------------------------------------------------
 
static void process_fpstat(int oc)
{
    int Ra;
    int64_t bits;
    char *p;
 
    p = inptr;
    bits = 0;
    Ra = getRegisterX();
    if (token==',') {
       NextToken();
       bits = expr();
    }
    prevToken();
        emit_insn(
                ((bits & 0x3F) << 18) |
                (oc << 12) |
                (Ra << 6) |
                0x36,!expand_flag,2
                );
}
 
// ---------------------------------------------------------------------------
// not r3,r3
// ---------------------------------------------------------------------------
 
static void process_rop(int oc)
{
    int Ra;
    int Rt;
 
    Rt = getRegisterX();
    need(',');
    Ra = getRegisterX();
        emit_insn(
                (oc << 26) |
                (Rt << 16) |
                (Ra << 6) |
                0x0C,!expand_flag,2
                );
        prevToken();
}
 
// ---------------------------------------------------------------------------
// beq r1,r0,label
// beq r2,#1234,label
// ---------------------------------------------------------------------------
 
static void process_bcc(int opcode6, int opcode3)
{
    int Ra, Rb;
    int64_t val, imm;
    int64_t disp;
 
    Ra = getRegisterX();
    need(',');
    NextToken();
    if (token=='#') {
        imm = expr();
                need(',');
                NextToken();
                val = expr();
                disp = val - code_address;
                if (imm < -15 || imm > 15) {
                        emit_insn((disp & 0x1FFF) << 19 |
                                (opcode3 << 16) |
                                (0x10 << 11) |
                                (Ra << 6) |
                                opcode6-0x10,0,2
                        );
                        emit_insn(imm,0,2);
                        return;
                }
                emit_insn((disp & 0x1FFF) << 19 |
                        (opcode3 << 16) |
                        ((imm & 0x1f) << 11) |
                        (Ra << 6) |
                        opcode6-0x10,0,2
                );
        return;
    }
        prevToken();
    Rb = getRegisterX();
    need(',');
    NextToken();
 
    val = expr();
    disp = val - code_address;
    emit_insn((disp & 0x1FFF) << 19 |
                (opcode3 << 16) |
        (Rb << 11) |
        (Ra << 6) |
        opcode6,0,2
    );
}
 
// ---------------------------------------------------------------------------
// beqi r1,r0,label
// beqi r2,#1234,label
// ---------------------------------------------------------------------------
 
static void process_bcci(int opcode6, int opcode3)
{
    int Ra;
    int64_t val, imm;
    int64_t disp;
 
    Ra = getRegisterX();
    need(',');
    NextToken();
    imm = expr();
        need(',');
        NextToken();
        val = expr();
        disp = val - code_address;
        if (imm < -15 || imm > 15) {
                emit_insn((disp & 0x1FFF) << 19 |
                        (opcode3 << 16) |
                        (0x10 << 11) |
                        (Ra << 6) |
                        opcode6,0,2
                );
                emit_insn(imm,0,2);
                return;
        }
        emit_insn((disp & 0x1FFF) << 19 |
                (opcode3 << 16) |
                ((imm & 0x1f) << 11) |
                (Ra << 6) |
                opcode6,0,2
        );
    return;
}
 
 
// ---------------------------------------------------------------------------
// bra label
// ---------------------------------------------------------------------------
 
static void process_bra(int oc)
{
    int Ra = 0, Rb = 0;
    int64_t val;
    int64_t disp;
 
    NextToken();
    val = expr();
    disp = val - code_address;
    emit_insn((disp & 0x1FFF) << 19 |
                (0 << 16) |
        (Rb << 11) |
        (Ra << 6) |
        0x12,0,2
    );
}
 
// ----------------------------------------------------------------------------
// chk r1,r2,#1234
// ----------------------------------------------------------------------------
 
static void process_chki(int opcode6)
{
        int Ra;
        int Rb;
        int64_t val;
 
        Ra = getRegisterX();
        need(',');
        Rb = getRegisterX();
        need(',');
        NextToken();
        val = expr();
        if (val < LB16 || val > 32767LL) {
                emit_insn((0x8000 << 16)|(Rb << 11)|(Ra << 6)|opcode6,0,2);
                emit_insn(val,0,2);
                return;
        }
        emit_insn(((val & 0xFFFF) << 16)|(Rb << 11)|(Ra << 6)|opcode6,!expand_flag,2);
}
 
 
// ---------------------------------------------------------------------------
// fbeq.q fp1,fp0,label
// ---------------------------------------------------------------------------
 
static void process_fbcc(int opcode3)
{
    int Ra, Rb;
    int64_t val;
    int64_t disp;
        int sz;
 
    sz = GetFPSize();
    Ra = getFPRegister();
    need(',');
    Rb = getFPRegister();
    need(',');
    NextToken();
 
    val = expr();
    disp = val - code_address;
        if (disp < -255 || disp > 255) {
                // Flip the test
                switch(opcode3) {
                case 0:  opcode3 = 1; break;
                case 1: opcode3 = 0; break;
                case 2: opcode3 = 3; break;
                case 3: opcode3 = 2; break;
                case 4: opcode3 = 5; break;
                case 5: opcode3 = 4; break;
                case 6: opcode3 = 7; break;
                case 7: opcode3 = 6; break;
                }
                emit_insn(
                        (sz << 27) |
                        (4 << 21) |
                        (opcode3 << 18) |
                        (Rb << 12) |
                        (Ra << 6) |
                        0x01,0,2
                );
                emit_insn((disp & 0x1FFF) << 19 |
                        0x12,0,2
                );
                return;
        }
    emit_insn(
                (((disp & 0x1FF) >> 6) << 29) |
                (sz << 27) |
                ((disp & 0x3F) << 21) |
                (opcode3 << 18) |
        (Rb << 12) |
        (Ra << 6) |
        0x01,0,2
    );
}
 
// ---------------------------------------------------------------------------
// ---------------------------------------------------------------------------
 
static void process_call()
{
        int64_t val;
        int Ra = 0;
 
    NextToken();
        val = expr();
        if (token=='[') {
                Ra = getRegisterX();
                need(']');
                if (Ra==31) {
                        val -= code_address;
                }
        }
        if (val==0) {
                emit_insn(
                        (29 << 11) |
                        (Ra << 6) |
                        0x1c,0,1
                );
                return;
        }
        if (val < LB16 || val > 32767LL) {
                emit_insn(
                        (val << 16) |
                        (29 << 11) |
                        (Ra << 6) |
                        0x10,0,3
                        );
                return;
        }
        emit_insn(
                (val << 16) |
                (29 << 11) |
                (Ra << 6) |
                0x14,0,2
                );
        return;
}
 
static void process_ret()
{
        int64_t val = 2;
 
    NextToken();
        if (token=='#') {
                val = expr();
        }
        if (val < -15LL || val > 15LL) {
                emit_insn(
                        (0x00 << 11) |
                        (0x10 << 6) |
                        0x19,0,1
                        );
                emit_insn(val,0,2);
                return;
        }
        emit_insn(
                (0x00 << 11) |
                ((val & 0x1F) << 6) |
                0x19,0,1
                );
}
 
// ----------------------------------------------------------------------------
// inc -8[bp],#1
// ----------------------------------------------------------------------------
 
static void process_inc(int oc)
{
    int Ra;
    int Rb;
    int64_t incamt;
    int64_t disp;
    char *p;
    int fixup = 5;
    int neg = 0;
 
    NextToken();
    p = inptr;
    mem_operand(&disp, &Ra, &Rb);
    incamt = 1;
    if (token==']')
       NextToken();
    if (token==',') {
        NextToken();
        incamt = expr();
        prevToken();
    }
    if (Rb >= 0) {
       if (disp != 0)
           printf("displacement not allowed with indexed addressing.\r\n");
       oc = 0x6F;  // INCX
           // ToDo: fix this
       emit_insn(
           ((disp & 0xFF) << 24) |
           (Rb << 17) |
           ((incamt & 0x1F) << 12) |
           (Ra << 7) |
           oc,0,2
       );
       return;
    }
    if (oc==0x25) neg = 1;
    oc = 0x24;        // INC
    if (Ra < 0) Ra = 0;
    if (neg) incamt = -incamt;
        if (disp < LB16 || disp > 32767LL) {
                emit_insn(
                        (0x8000 << 16) |
                        ((incamt & 0x1f) << 11) |
                        (Ra << 6) |
                        oc,0,2);
                emit_insn(disp,0,2);
        }
        else {
                emit_insn(
                        (disp << 16) |
                        ((incamt & 0x1f) << 11) |
                        (Ra << 6) |
                        oc,!expand_flag,2);
    }
    ScanToEOL();
}
 
// ---------------------------------------------------------------------------
// ---------------------------------------------------------------------------
 
static void process_int()
{
        int64_t val;
 
    NextToken();
        val = expr();
        emit_insn(
                (1 << 15) |
                ((val & 0x1FF) << 6) |
                0x1B,0,1
                );
}
 
 
// ---------------------------------------------------------------------------
// expr
// expr[Reg]
// [Reg]
// [Reg+Reg]
// ---------------------------------------------------------------------------
 
static void mem_operand(int64_t *disp, int *regA, int *regB)
{
     int64_t val;
 
     // chech params
     if (disp == (int64_t *)NULL)
         return;
     if (regA == (int *)NULL)
         return;
 
     *disp = 0;
     *regA = -1;
         *regB = -1;
     if (token!='[') {;
          val = expr();
          *disp = val;
     }
     if (token=='[') {
         *regA = getRegisterX();
         if (*regA == -1) {
             printf("expecting a register\r\n");
         }
                 if (token=='+') {
                         *regB = getRegisterX();
                         if (*regB == -1) {
                                 printf("expecting a register\r\n");
                         }
                 }
         need(']');
     }
}
 
// ---------------------------------------------------------------------------
// sw disp[r1],r2
// sw [r1+r2],r3
// ----------------------------------------------------------------------------
 
static void process_store(int opcode6)
{
    int Ra,Rb;
    int Rs;
    int64_t disp,val;
 
    Rs = getRegisterX();
    if (Rs < 0) {
        printf("Expecting a source register (%d).\r\n", lineno);
        printf("Line:%.60s\r\n",inptr);
        ScanToEOL();
        return;
    }
    expect(',');
    mem_operand(&disp, &Ra, &Rb);
        if (Ra > 0 && Rb > 0) {
                emit_insn(
                        (opcode6 << 26) |
                        (Rs << 16) |
                        (Rb << 11) |
                        (Ra << 6) |
                        0x0C,!expand_flag,2);
                return;
        }
    if (Ra < 0) Ra = 0;
    val = disp;
        if (val < LB16 || val > 32767LL) {
                emit_insn(
                        (0x8000 << 16) |
                        (Rs << 11) |
                        (Ra << 6) |
                        opcode6,0,2);
                emit_insn(val,0,2);
        }
        else {
                emit_insn(
                        (val << 16) |
                        (Rs << 11) |
                        (Ra << 6) |
                        opcode6,!expand_flag,2);
    }
    ScanToEOL();
}
 
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
 
static void process_ldi()
{
    int Ra = 0;
    int Rt;
    int64_t val;
    int opcode6 = 0x09;  // ORI
 
    Rt = getRegisterX();
    expect(',');
    val = expr();
        if (val < LB16 || val > 32767LL) {
                emit_insn(
                        (val << 16) |
                        (Rt << 11) |
                        0x0B,0,3
                        );
                return;
        }
        emit_insn(
                (val << 16) |
                (Rt << 11) |
                opcode6,!expand_flag,2
        );
}
 
// ----------------------------------------------------------------------------
// lw r1,disp[r2]
// lw r1,[r2+r3]
// ----------------------------------------------------------------------------
 
static void process_load(int opcode6)
{
    int Ra,Rb;
    int Rt;
    char *p;
    int64_t disp;
    int64_t val;
    int fixup = 5;
 
    p = inptr;
    Rt = getRegisterX();
    if (Rt < 0) {
        printf("Expecting a target register (%d).\r\n", lineno);
        printf("Line:%.60s\r\n",p);
        ScanToEOL();
        inptr-=2;
        return;
    }
    expect(',');
    mem_operand(&disp, &Ra, &Rb);
        if (Ra > 0 && Rb > 0) {
                emit_insn(
                        (opcode6 << 26) |
                        (Rt << 16) |
                        (Rb << 11) |
                        (Ra << 6) |
                        0x0C,!expand_flag,2);
                return;
        }
    if (Ra < 0) Ra = 0;
    val = disp;
        if (val < LB16 || val > 32767LL) {
                emit_insn(
                        (0x8000 << 16) |
                        (Rt << 11) |
                        (Ra << 6) |
                        opcode6,0,2);
                emit_insn(val,0,2);
        }
        else {
                emit_insn(
                        (val << 16) |
                        (Rt << 11) |
                        (Ra << 6) |
                        opcode6,!expand_flag,2);
    }
    ScanToEOL();
}
 
static void process_lsfloat(int opcode6)
{
    int Ra,Rb;
    int Rt;
    char *p;
    int64_t disp;
    int64_t val;
    int fixup = 5;
 
    int  sz;
    int rm;
 
    rm = 0;
    sz = GetFPSize();
    p = inptr;
    Rt = getFPRegister();
    if (Rt < 0) {
        printf("Expecting a target register (1:%d).\r\n", lineno);
        printf("Line:%.60s\r\n",p);
        ScanToEOL();
        inptr-=2;
        return;
    }
    expect(',');
    mem_operand(&disp, &Ra, &Rb);
        if (Ra > 0 && Rb > 0) {
                emit_insn(
                        (1L << 29) |
                        (sz << 27) |
                        (Rt << 18) |
                        (Rb << 12) |
                        (Ra << 6) |
                        opcode6,!expand_flag,2);
                return;
        }
    if (Ra < 0) Ra = 0;
    val = disp;
        if (val < -15LL || val > 15LL) {
                emit_insn(
                        (sz << 27) |
                        (Rt << 18) |
                        (0x10 << 11) |
                        (Ra << 6) |
                        opcode6,0,2);
                emit_insn(val,0,2);
        }
        else {
                emit_insn(
                        (sz << 27) |
                        (Rt << 18) |
                        ((val & 0x1f) << 11) |
                        (Ra << 6) |
                        opcode6,!expand_flag,2);
    }
    ScanToEOL();
}
 
static void process_ld()
{
        int Rt;
        char *p;
 
        p = inptr;
        Rt = getRegisterX();
        expect(',');
//      NextToken();
        if (token == '#') {
                inptr = p;
                process_ldi();
                return;
        }
        // Else: do a word load
        inptr = p;
        process_load(0x22);
}
 
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
 
static void process_ltcb(int oc)
{
        int Rn;
 
        Rn = getRegisterX();
        emit_insn(
                (oc << 11) |
                (Rn << 6) |
                0x19,0,1
                );
        prevToken();
}
 
// ----------------------------------------------------------------------------
// mov r1,r2
// ----------------------------------------------------------------------------
 
static void process_mov(int oc)
{
     int Ra;
     int Rt;
 
     Rt = getRegisterX();
     need(',');
     Ra = getRegisterX();
         emit_insn(
                 (Rt << 11) |
                 (Ra << 6) |
                 oc,0,1
                 );
        prevToken();
}
 
// ----------------------------------------------------------------------------
// srli r1,r2,#5
// ----------------------------------------------------------------------------
 
static void process_shifti(int funct6)
{
     int Ra;
     int Rt;
     int64_t val;
 
     Rt = getRegisterX();
     need(',');
     Ra = getRegisterX();
     need(',');
     NextToken();
     val = expr();
     emit_insn((funct6 << 26) | (Rt << 16)| ((val & 0x1F) << 11) | (Ra << 6) | 0x0C,!expand_flag,2);
}
 
// ----------------------------------------------------------------------------
// shl r1,r2,r3
// ----------------------------------------------------------------------------
 
static void process_shift(int funct6)
{
     int Ra, Rb;
     int Rt;
     char *p;
 
         p = inptr;
     Rt = getRegisterX();
     need(',');
     Ra = getRegisterX();
     need(',');
     NextToken();
         if (token=='#') {
                 inptr = p;
                 process_shifti(funct6 + 0x8);
         }
         else {
                prevToken();
                Rb = getRegisterX();
                emit_insn((funct6 << 26) | (Rt << 16)| (Rb << 11) | (Ra << 6) | 0x0C,!expand_flag,2);
         }
}
 
// ----------------------------------------------------------------------------
// gran r1
// ----------------------------------------------------------------------------
 
static void process_gran(int oc)
{
    int Rt;
 
    Rt = getRegisterX();
//    emitAlignedCode(0x01);
    emitCode(0x00);
    emitCode(Rt);
    emitCode(0x00);
    emitCode(oc);
    prevToken();
}
 
 
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
 
static void process_mffp(int oc)
{
    int fpr;
    int Rt;
 
    Rt = getRegisterX();
    need(',');
    fpr = getFPRegister();
    //emitAlignedCode(0x01);
    emitCode(fpr);
    emitCode(Rt);
    emitCode(0x00);
    emitCode(oc);
    if (fpr >= 0)
    prevToken();
}
 
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
 
static void process_fprdstat(int oc)
{
    int Rt;
 
    Rt = getRegisterX();
    //emitAlignedCode(0x01);
    emitCode(0x00);
    emitCode(Rt);
    emitCode(0x00);
    emitCode(oc);
}
 
 
// ----------------------------------------------------------------------------
// Four cases, two with extendable immediate constants
//
// csrrw        r2,#21,r3
// csrrw        r4,#34,#1234
// csrrw        r5,r4,#1234
// csrrw        r6,r4,r5
// ----------------------------------------------------------------------------
 
static void process_csrrw(int op)
{
        int Rd;
        int Rs;
        int Rc;
        int64_t val,val2;
        char *p;
 
        Rd = getRegisterX();
        need(',');
        p = inptr;
        NextToken();
        if (token=='#') {
                val = expr();
                need(',');
                NextToken();
                if (token=='#') {
                        val2 = expr();
                        if (val2 < -15LL || val2 > 15LL) {
                                emit_insn((val << 18) | (op << 16) | (0x10 << 6) | (Rd << 11) | 0x0F,0,2);
                                emit_insn(val2,0,2);
                                return;
                        }
                        emit_insn((val << 18) | (op << 16) | ((val2 & 0x1f) << 6) | (Rd << 11) | 0x0F,!expand_flag,2);
                        return;
                }
                prevToken();
                Rs = getRegisterX();
                emit_insn((val << 18) | (op << 16) | (Rs << 6) | (Rd << 11) | 0x3F,!expand_flag,2);
                prevToken();
                return;
                }
        inptr = p;
        Rc = getRegisterX();
        need(',');
        NextToken();
        if (token=='#') {
                val2 = expr();
                if (val2 < -15LL || val2 > 15LL) {
                        emit_insn((0x0F << 26) | (op << 21) | (Rd << 16) | (0x10 << 6) | (Rc << 11) | 0x0C,0,2);
                        emit_insn(val2,0,2);
                        return;
                }
                emit_insn((0x0F << 26) | (op << 21) | (Rd << 16) | ((val2 & 0x1f) << 6) | (Rc << 11) | 0x0C,!expand_flag,2);
                return;
        }
        prevToken();
        Rs = getRegisterX();
        emit_insn((0x3F << 26) | (op << 21) | (Rd << 16) | (Rc << 11) | (Rs << 6) | 0x0C,!expand_flag,2);
        prevToken();
        return;
}
 
// ---------------------------------------------------------------------------
// com r3,r3
// - alternate mnemonic for xor Rn,Rn,#-1
// ---------------------------------------------------------------------------
 
static void process_com()
{
    int Ra;
    int Rt;
 
    Rt = getRegisterX();
    need(',');
    Ra = getRegisterX();
        emit_insn(
                (0xFFFF << 16) |
                (Rt << 11) |
                (Ra << 6) |
                0x0A,!expand_flag,2
                );
        prevToken();
}
 
// ---------------------------------------------------------------------------
// com r3,r3
// - alternate mnemonic for xor Rn,Rn,#-1
// ---------------------------------------------------------------------------
 
static void process_neg()
{
    int Ra;
    int Rt;
 
    Rt = getRegisterX();
    need(',');
    Ra = getRegisterX();
        emit_insn(
                (0x07 << 26) |
                (Rt << 16) |
                (Ra << 11) |
                (0 << 6) |
                0x0C,!expand_flag,2
                );
        prevToken();
}
 
// ----------------------------------------------------------------------------
// push r1
// push #123
// ----------------------------------------------------------------------------
 
static void process_push(int func)
{
    int Ra,Rb;
        int FRa;
        int sz;
    int64_t val;
 
    Ra = -1;
    Rb = -1;
    sz = GetFPSize();
    NextToken();
    if (token=='#') {  // Filter to PUSH
       val = expr();
            if (val >= -15LL && val < 16LL) {
                        emit_insn(
                                (4 << 11) |
                                ((val & 0x1f) << 6) |
                                0x19,0,1
                                );
                        return;
                }
            if (val > 32767 || val < LB16) {
                        emit_insn(
                                (0x8000 << 16) |
                                (0x00 << 11) |
                                (0x00 << 6) |
                                0x2B,  // PEA
                                0,2
                        );
                    emit_insn(val,0,2);
                }
                else
                        emit_insn(
                                ((val & 0xFFFFLL) << 16) |
                                (0x00 << 11) |
                                (0x00 << 6) |
                                0x2B,  // PEA
                                1,2
                        );
        return;
    }
    prevToken();
        FRa = getFPRegister();
        if (FRa==-1) {
                prevToken();
                Ra = getRegisterX();
        }
        else {
                emit_insn(
                        (func << 14) |
                        (sz << 12) |
                        (FRa << 6) |
                        0x19,0,1
                        );
                prevToken();
                return;
        }
    if (Ra == -1) {
                Ra = 0;
        printf("%d: unknown register.\r\n");
    }
    emit_insn(
                (func << 11) |
                (Ra << 6) |
                0x19,0,1);
    prevToken();
}
 
static void process_sync(int oc)
{
//    emit_insn(oc,!expand_flag);
}
 
 
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
 
static void ProcessEOL(int opt)
{
    int64_t nn,mm;
    int first;
    int cc;
 
     //printf("Line: %d\r", lineno);
     expand_flag = 0;
     compress_flag = 0;
     segprefix = -1;
     if (bGen && (segment==codeseg || segment==dataseg || segment==rodataseg)) {
    nn = binstart;
    cc = 2;
    if (segment==codeseg) {
       cc = 4;
/*
        if (sections[segment].bytes[binstart]==0x61) {
            fprintf(ofp, "%06LLX ", ca);
            for (nn = binstart; nn < binstart + 5 && nn < sections[segment].index; nn++) {
                fprintf(ofp, "%02X ", sections[segment].bytes[nn]);
            }
            fprintf(ofp, "   ; imm\n");
             if (((ca+5) & 15)==15) {
                 ca+=6;
                 binstart+=6;
                 nn++;
             }
             else {
                  ca += 5;
                  binstart += 5;
             }
        }
*/
/*
        if (sections[segment].bytes[binstart]==0xfd) {
            fprintf(ofp, "%06LLX ", ca);
            for (nn = binstart; nn < binstart + 5 && nn < sections[segment].index; nn++) {
                fprintf(ofp, "%02X ", sections[segment].bytes[nn]);
            }
            fprintf(ofp, "   ; imm\n");
             if (((ca+5) & 15)==15) {
                 ca+=6;
                 binstart+=6;
                 nn++;
             }
             else {
                  ca += 5;
                  binstart += 5;
             }
        }
         if (sections[segment].bytes[binstart]==0xfe) {
            fprintf(ofp, "%06LLX ", ca);
            for (nn = binstart; nn < binstart + 5 && nn < sections[segment].index; nn++) {
                fprintf(ofp, "%02X ", sections[segment].bytes[nn]);
            }
            fprintf(ofp, "   ; imm\n");
             if (((ca+5) & 15)==15) {
                 ca+=6;
                 nn++;
             }
             else {
                  ca += 5;
             }
        }
*/
    }
 
    first = 1;
    while (nn < sections[segment].index) {
        fprintf(ofp, "%06LLX ", ca);
        for (mm = nn; nn < mm + cc && nn < sections[segment].index; nn+=2) {
            fprintf(ofp, "%02X%02X ", sections[segment].bytes[nn+1], sections[segment].bytes[nn]);
        }
        for (; nn < mm + cc; nn++)
            fprintf(ofp, "   ");
        if (first & opt) {
            fprintf(ofp, "\t%.*s\n", inptr-stptr-1, stptr);
            first = 0;
        }
        else
            fprintf(ofp, opt ? "\n" : "; NOP Ramp\n");
        ca += cc/2;
    }
    // empty (codeless) line
    if (binstart==sections[segment].index) {
        fprintf(ofp, "%24s\t%.*s", "", inptr-stptr, stptr);
    }
    } // bGen
    if (opt) {
       stptr = inptr;
       lineno++;
    }
    binstart = sections[segment].index;
    ca = sections[segment].address/2;
}
 
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
 
void dsd7_processMaster()
{
    int nn;
    int64_t bs1, bs2;
 
    lineno = 1;
    binndx = 0;
    binstart = 0;
    bs1 = 0;
    bs2 = 0;
    inptr = &masterFile[0];
    stptr = inptr;
    code_address = 0;
    bss_address = 0;
    start_address = 0;
    first_org = 1;
    first_rodata = 1;
    first_data = 1;
    first_bss = 1;
        expandedBlock = 1;
    if (pass<3) {
    htblmax = 0;
    for (nn = 0; nn < 100000; nn++) {
      hTable[nn].count = 0;
      hTable[nn].opcode = 0;
    }
    }
    for (nn = 0; nn < 12; nn++) {
        sections[nn].index = 0;
        if (nn == 0)
        sections[nn].address = 0;
        else
        sections[nn].address = 0;
        sections[nn].start = 0;
        sections[nn].end = 0;
    }
    ca = code_address;
    segment = codeseg;
    memset(current_label,0,sizeof(current_label));
    NextToken();
    while (token != tk_eof) {
//        printf("\t%.*s\n", inptr-stptr-1, stptr);
//        printf("token=%d\r", token);
          if (expandedBlock)
             expand_flag = 1;
        switch(token) {
        case tk_eol: ProcessEOL(1); break;
//        case tk_add:  process_add(); break;
        case tk_add:  process_rrop(0x04); break;
        case tk_addi: process_riop(0x04); break;
        case tk_align: process_align(); continue; break;
        case tk_and:  process_rrop(0x08); break;
        case tk_andi:  process_riop(0x08); break;
        case tk_asl: process_shift(0x10); break;
        case tk_asr: process_shift(0x12); break;
        case tk_bbc: process_bcci(0x3,0); break;
        case tk_bbs: process_bcci(0x3,1); break;
        case tk_begin_expand: expandedBlock = 1; break;
        case tk_beq: process_bcc(0x12,0); break;
        case tk_beqi: process_bcci(0x2,0); break;
        case tk_bge: process_bcc(0x12,5); break;
        case tk_bgei: process_bcci(0x2,5); break;
        case tk_bgeu: process_bcc(0x13,5); break;
        case tk_bgeui: process_bcci(0x3,5); break;
        case tk_bgt: process_bcc(0x12,7); break;
        case tk_bgti: process_bcci(0x2,7); break;
        case tk_bgtu: process_bcc(0x13,7); break;
        case tk_bgtui: process_bcci(0x3,7); break;
        case tk_ble: process_bcc(0x12,6); break;
        case tk_blei: process_bcci(0x2,6); break;
        case tk_bleu: process_bcc(0x13,6); break;
        case tk_bleui: process_bcci(0x3,6); break;
        case tk_blt: process_bcc(0x12,4); break;
        case tk_blti: process_bcci(0x2,4); break;
        case tk_bltu: process_bcc(0x13,4); break;
        case tk_bltui: process_bcci(0x3,4); break;
        case tk_bne: process_bcc(0x12,1); break;
        case tk_bnei: process_bcci(0x2,1); break;
        case tk_bra: process_bra(0x46); break;
        //case tk_bsr: process_bra(0x56); break;
        case tk_bss:
            if (first_bss) {
                while(sections[segment].address & 4095)
                    emitByte(0x00);
                sections[3].address = sections[segment].address;
                first_bss = 0;
                binstart = sections[3].index;
                ca = sections[3].address;
            }
            segment = bssseg;
            break;
                case tk_call:   process_call(); break;
                case tk_chki:  process_chki(0x0E); break;
        case tk_cli: emit_insn(0x0018,0,1); break;
        case tk_code: process_code(); break;
        case tk_com: process_com(); break;
        case tk_cs:  segprefix = 15; break;
        case tk_csrrc: process_csrrw(0x2); break;
        case tk_csrrs: process_csrrw(0x1); break;
        case tk_csrrw: process_csrrw(0x0); break;
        case tk_data:
            if (first_data) {
                while(sections[segment].address & 4095)
                    emitByte(0x00);
                sections[2].address = sections[segment].address;   // set starting address
                first_data = 0;
                binstart = sections[2].index;
                ca = sections[2].address;
            }
            process_data(dataseg);
            break;
        case tk_db:  process_db(); break;
                case tk_dec: process_inc(0x25); break;
        case tk_dh:  process_dh(); break;
        case tk_dh_htbl:  process_dh_htbl(); break;
        case tk_div: process_rrop(0x38); break;
        case tk_divu: process_rrop(0x39); break;
        case tk_dw:  process_dc(); break;
        case tk_end: goto j1;
        case tk_end_expand: expandedBlock = 0; break;
        case tk_endpublic: break;
        case tk_eor: process_rrop(0x0A); break;
        case tk_eori: process_riop(0x0A); break;
        case tk_extern: process_extern(); break;
        case tk_fabs: process_fprop(0x05); break;
        case tk_fadd: process_fprrop(0x04); break;
        case tk_fbeq: process_fbcc(0); break;
        case tk_fbne: process_fbcc(1); break;
        case tk_fbun: process_fbcc(2); break;
        case tk_fbor: process_fbcc(3); break;
        case tk_fblt: process_fbcc(4); break;
        case tk_fbge: process_fbcc(5); break;
        case tk_fble: process_fbcc(6); break;
        case tk_fbgt: process_fbcc(7); break;
        case tk_fcmp: process_fprrop(0x01); break;
        case tk_fdiv: process_fprrop(0x07); break;
        case tk_fill: process_fill(); break;
        case tk_fix2flt: process_fprop(0x03); break;
        case tk_flt2fix: process_fprop(0x02); break;
        case tk_fmov: process_fprop(0x00); break;
        case tk_fmul: process_fprrop(0x06); break;
        case tk_fnabs: process_fprop(0x08); break;
        case tk_fneg: process_fprop(0x04); break;
        case tk_frm: process_fpstat(0x14); break;
//        case tk_fstat: process_fprdstat(0x86); break;
        case tk_fsub: process_fprrop(0x05); break;
                case tk_ftoi: process_fprop(0x02); break;
        case tk_ftx: process_fpstat(0x10); break;
        case tk_gran: process_gran(0x14); break;
                case tk_hint:   process_hint(); break;
                case tk_inc:    process_inc(0x24); break;
                case tk_int:    process_int(); break;
                case tk_ipop:   emit_insn((0x06<<11)|0x18,0,1); break;
                case tk_ipush:  emit_insn((0x05<<11)|0x18,0,1); break;
                case tk_iret:   emit_insn((0x04<<11)|0x18,0,1); break;
                case tk_itof: process_fprop(0x03); break;
        case tk_jal: process_jal(0x15); break;
        case tk_jmp: process_jal(0x15); break;
                case tk_ld:     process_ld(); break;
        case tk_ldi: process_ldi(); break;
        case tk_lea: process_load(0x25); break;
                case tk_lf:      process_lsfloat(0x26); break;
        case tk_lh:  process_load(0x20); break;
        case tk_lhu: process_load(0x21); break;
//        case tk_lui: process_lui(); break;
                case tk_ltcb: process_ltcb(0x06); break;
        case tk_lw:  process_load(0x22); break;
        case tk_lwar:  process_load(0x23); break;
                case tk_message: process_message(); break;
        case tk_mod: process_rrop(0x3B); break;
        case tk_modu: process_rrop(0x3C); break;
        case tk_mov: process_mov(0x1D); break;
        case tk_mul: process_rrop(0x30); break;
        case tk_muli: process_riop(0x30); break;
        case tk_mulu: process_rrop(0x31); break;
        case tk_mului: process_riop(0x31); break;
        case tk_neg: process_neg(); break;
        case tk_nop: emit_insn(0x1A,0,1); break;
//        case tk_not: process_rop(0x07); break;
        case tk_or:  process_rrop(0x09); break;
        case tk_ori: process_riop(0x09); break;
        case tk_org: process_org(); break;
        case tk_plus: expand_flag = 1; break;
                case tk_pop:    process_push(0x03); break;
        case tk_public: process_public(); break;
                case tk_push:   process_push(0x02); break;
        case tk_rodata:
            if (first_rodata) {
                while(sections[segment].address & 4095)
                    emitByte(0x00);
                sections[1].address = sections[segment].address;
                first_rodata = 0;
                binstart = sections[1].index;
                ca = sections[1].address;
            }
            segment = rodataseg;
            break;
                case tk_ret: process_ret(); break;
                case tk_rol: process_shift(0x13); break;
                case tk_roli: process_shifti(0x1B); break;
                case tk_ror: process_shift(0x14); break;
                case tk_rori: process_shifti(0x1C); break;
        case tk_sei: emit_insn(0x818,0,1); break;
                case tk_sf:      process_lsfloat(0x27); break;
        //case tk_slt:  process_rrop(0x33,0x02,0x00); break;
        //case tk_sltu:  process_rrop(0x33,0x03,0x00); break;
        //case tk_slti:  process_riop(0x13,0x02); break;
        //case tk_sltui:  process_riop(0x13,0x03); break;
        case tk_sh:  process_store(0x28); break;
        case tk_shl: process_shift(0x10); break;
        case tk_shli: process_shifti(0x18); break;
                case tk_shr: process_shift(0x12); break;
                case tk_shru: process_shift(0x11); break;
                case tk_shrui: process_shifti(0x19); break;
        case tk_slli: process_shifti(0x18); break;
        case tk_srai: process_shifti(0x1A); break;
        case tk_srli: process_shifti(0x19); break;
                case tk_stcb: process_ltcb(0x07); break;
        case tk_sub:  process_rrop(0x07); break;
        case tk_subi:  process_riop(0x07); break;
//        case tk_sub:  process_sub(); break;
        case tk_sxb: process_rop(0x16); break;
        case tk_sxc: process_rop(0x17); break;
        case tk_sxh: process_rop(0x17); break;
        case tk_sw:  process_store(0x29); break;
        case tk_swap: process_rop(0x03); break;
        case tk_swcr: process_store(0x2A); break;
        case tk_sync: process_sync(0x77); break;
        case tk_xor: process_rrop(0x0A); break;
        case tk_xori: process_riop(0x0A); break;
        case tk_id:  process_label(); break;
        case '-': compress_flag = 1; break;
        }
        NextToken();
    }
j1:
    ;
}
 
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[/] [thor/] [trunk/] [FT64v5/] [software/] [AS64/] [source/] [dsd7.cpp] - Blame information for rev 48

Line No.	Rev	Author	Line
1	48	robfinch	`// ============================================================================`
2			`// __`
3			`// \\__/ o\ (C) 2016 Robert Finch, Stratford`
4			`// \ __ / All rights reserved.`
5			`// \/_// robfinch<remove>@finitron.ca`
6			`// \|\|`
7			`//`
8			`// A64 - Assembler`
9			`// - 64 bit CPU`
10			`//`
11			`// This source file is free software: you can redistribute it and/or modify`
12			`// it under the terms of the GNU Lesser General Public License as published`
13			`// by the Free Software Foundation, either version 3 of the License, or`
14			`// (at your option) any later version.`
15			`//`
16			`// This source file is distributed in the hope that it will be useful,`
17			`// but WITHOUT ANY WARRANTY; without even the implied warranty of`
18			`// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
19			`// GNU General Public License for more details.`
20			`//`
21			`// You should have received a copy of the GNU General Public License`
22			`// along with this program. If not, see <http://www.gnu.org/licenses/>.`
23			`//`
24			`// ============================================================================`
25			`//`
26			`#include "stdafx.h"`
27
28			`static void process_shifti(int oc, int funct3, int funct7);`
29			`static void ProcessEOL(int opt);`
30			`extern void process_message();`
31			`static void mem_operand(int64_t disp, int regA, int *regB);`
32
33			`extern int first_rodata;`
34			`extern int first_data;`
35			`extern int first_bss;`
36			`extern int htable[100000];`
37			`extern int htblcnt[100000];`
38			`extern int htblmax;`
39			`extern int pass;`
40