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Overview
Comment:Added opcode for NOP_x (0xc5)
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SHA1:2acd1fa545035b015ba8f0099ccaca709c9512d5
User & Date: jos 2015-08-11 21:50:18
Context
2015-08-11
23:19
Added logic to calculate the length of an instruction. check-in: 0791033629 user: jos tags: trunk
21:50
Added opcode for NOP_x (0xc5) check-in: 2acd1fa545 user: jos tags: trunk
14:49
This fixes the ST.B (sp,0xvv),Rx problem. The second field is captured as everything between balanced parenteses, (including a ','). check-in: b37e57a31d user: jos tags: trunk
Changes
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Changes to opcodes.lua.

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            return 0x84 + (ourNr + 2*(ourNr2-2)) ;
        end
    end

end

function do_LD_W(f1, f2, f3)








    return 0xd0 + isReg(f2), 0x00, 0x00













end

function do_LSL(f1, f2, f3)
    return 0xff ;
end

function do_LSL_WT(f1, f2, f3)
................................................................................
    end
    return 0xf5, 0x00 ;
end

function do_NOP(f1, f2, f3)
  return 0xff  ;
end





function do_POP(f1, f2, f3)
  local b = f2:sub(-1);
  if( b == 'S' or b == 's' ) then return 0xc4 end   -- for POP PS
  return( 0xc0 + tonumber(b) );
end

................................................................................
        else 
            return 0x8c + (ourNr + 2*(ourNr2-2)) ;  -- ST.B (Rb),Rx
        end
    end
end

function do_ST_W(f1, f2, f3)
    return 0xb8, 0x00, 0x00



















end

function do_SUB(f1, f2, f3)
    return( 0x60 + isReg2(f2,f3) );
end

function do_SUBX(f1, f2, f3)
................................................................................
  ['MULS'] = { 1, do_MULS },
  ['MULU'] = { 1, do_MULU },
  ['NEG'] = { 1, do_NEG },
  ['NEGX'] = { 1, do_NEGX },
  ['OR'] = { 0, do_OR },  -- 2 if op1 is PS, 1 otherwise.
  ['ORI'] = { 2, do_ORI }, -- alias for OR PS,#VV ;
  ['NOP'] = { 1, do_NOP },

  ['POP'] = { 1, do_POP },
  ['PUSH'] = { 1, do_PUSH },
  ['RET'] = { 1, do_RET },
  ['RETI'] = { 1, do_RETI },
  ['ROL'] = { 2, do_ROL },
  ['ROL.WT'] = { 2, do_ROL_WT },
  ['ROR'] = { 2, do_ROR },







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            return 0x84 + (ourNr + 2*(ourNr2-2)) ;
        end
    end

end

function do_LD_W(f1, f2, f3)
    local ind_dst = (f3:match('%b()')~=nil);
    local autoinc = (ind_dst and (f3:match('++')~=nil) );
    local stack = f3:match("[sS][pP]");

    local ourNr = isReg(f2);

    if( not ind_dst ) then
        if( f3:match('#') ) 
        then return 0xd0 + ourNr, 0x00, 0x00;
        else return 0xb0 + ourNr, 0x00, 0x00;
        end;
    else
        if( stack ) then return 0xa0 + ourNr, 0x00; end;
        local ourNr2 = tonumber( f3:match("[23]") );
        if( ourNr2 == nil ) then
            error("Line ".. string.format("%04d",LineNr) .. ": Operand must be R2 or R3", 0 )
        end
        if( autoinc ) then return 0x90 + (ourNr + 2*(ourNr2-2)) ;
        else 
            return 0x80 + (ourNr + 2*(ourNr2-2)) ;
        end
    end
end

function do_LSL(f1, f2, f3)
    return 0xff ;
end

function do_LSL_WT(f1, f2, f3)
................................................................................
    end
    return 0xf5, 0x00 ;
end

function do_NOP(f1, f2, f3)
  return 0xff  ;
end

function do_NOP_X(f1, f2, f3)
  return 0xc5  ;
end

function do_POP(f1, f2, f3)
  local b = f2:sub(-1);
  if( b == 'S' or b == 's' ) then return 0xc4 end   -- for POP PS
  return( 0xc0 + tonumber(b) );
end

................................................................................
        else 
            return 0x8c + (ourNr + 2*(ourNr2-2)) ;  -- ST.B (Rb),Rx
        end
    end
end

function do_ST_W(f1, f2, f3)
    local ind_dst = (f2:match('%b()')~=nil);
    local autoinc = (ind_dst and (f2:match('++')~=nil) );
    local stack = f2:match("[sS][pP]");

    local ourNr = isReg(f3);

    if( not ind_dst ) then
        return 0xb8 + ourNr, 0x00, 0x00;  -- ST.B 0xWWWW,Rx ;
    else
        if( stack ) then return 0xa8 + ourNr, 0x00; end;  -- ST.B (SP,0xVV),Rx ;

        local ourNr2 = tonumber( f2:match("[23]") );
        if( ourNr2 == nil ) then
            error("Line ".. string.format("%04d",LineNr) .. ": Operand must be R2 or R3", 0 )
        end
        if( autoinc ) then return 0x98 + (ourNr + 2*(ourNr2-2)) ;  -- ST.B (Rb++),Rx ;
        else 
            return 0x88 + (ourNr + 2*(ourNr2-2)) ;  -- ST.B (Rb),Rx
        end
    end
end

function do_SUB(f1, f2, f3)
    return( 0x60 + isReg2(f2,f3) );
end

function do_SUBX(f1, f2, f3)
................................................................................
  ['MULS'] = { 1, do_MULS },
  ['MULU'] = { 1, do_MULU },
  ['NEG'] = { 1, do_NEG },
  ['NEGX'] = { 1, do_NEGX },
  ['OR'] = { 0, do_OR },  -- 2 if op1 is PS, 1 otherwise.
  ['ORI'] = { 2, do_ORI }, -- alias for OR PS,#VV ;
  ['NOP'] = { 1, do_NOP },
  ['NOP_X'] = { 1, do_NOP_X },  -- Unused instruction.
  ['POP'] = { 1, do_POP },
  ['PUSH'] = { 1, do_PUSH },
  ['RET'] = { 1, do_RET },
  ['RETI'] = { 1, do_RETI },
  ['ROL'] = { 2, do_ROL },
  ['ROL.WT'] = { 2, do_ROL_WT },
  ['ROR'] = { 2, do_ROR },