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[/] [zipcpu/] [trunk/] [sw/] [zasm/] [zparser.cpp] - Diff between revs 126 and 143

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////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
//
//
// Filename:    zparser.cpp
// Filename:    zparser.cpp
//
//
// Project:     Zip CPU -- a small, lightweight, RISC CPU core
// Project:     Zip CPU -- a small, lightweight, RISC CPU core
//
//
// Purpose:     This file is really mis-named.  At one time it was going to
// Purpose:     This file is really mis-named.  At one time it was going to
//              be the parser for the Zip Assembler, zasm.  Since then, I
//              be the parser for the Zip Assembler, zasm.  Since then, I
//              discovered Flex and Bison and have written a parser using
//              discovered Flex and Bison and have written a parser using
//              those tools.  The true parser may therefore be found in zasm.y.
//              those tools.  The true parser may therefore be found in zasm.y.
//              This file, however, still contains some very valuable tools.
//              This file, however, still contains some very valuable tools.
//              In particular, all of the routines used to build instructions
//              In particular, all of the routines used to build instructions
//              from the appropriate fields are kept in this file.  For example,
//              from the appropriate fields are kept in this file.  For example,
//              op_noop() returns the instruction code for a NOOP  instruction.
//              op_noop() returns the instruction code for a NOOP  instruction.
//
//
// Creator:     Dan Gisselquist, Ph.D.
// Creator:     Dan Gisselquist, Ph.D.
//              Gisselquist Technology, LLC
//              Gisselquist Technology, LLC
//
//
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
//
//
// Copyright (C) 2015, Gisselquist Technology, LLC
// Copyright (C) 2015, Gisselquist Technology, LLC
//
//
// This program is free software (firmware): you can redistribute it and/or
// This program is free software (firmware): you can redistribute it and/or
// modify it under the terms of  the GNU General Public License as published
// modify it under the terms of  the GNU General Public License as published
// by the Free Software Foundation, either version 3 of the License, or (at
// by the Free Software Foundation, either version 3 of the License, or (at
// your option) any later version.
// your option) any later version.
//
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for more details.
// for more details.
//
//
// You should have received a copy of the GNU General Public License along
// You should have received a copy of the GNU General Public License along
// with this program.  (It's in the $(ROOT)/doc directory, run make with no
// with this program.  (It's in the $(ROOT)/doc directory, run make with no
// target there if the PDF file isn't present.)  If not, see
// target there if the PDF file isn't present.)  If not, see
// <http://www.gnu.org/licenses/> for a copy.
// <http://www.gnu.org/licenses/> for a copy.
//
//
// License:     GPL, v3, as defined and found on www.gnu.org,
// License:     GPL, v3, as defined and found on www.gnu.org,
//              http://www.gnu.org/licenses/gpl.html
//              http://www.gnu.org/licenses/gpl.html
//
//
//
//
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
 
 
#include <stdio.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdlib.h>
#include <string.h>
#include <string.h>
#include <ctype.h>
#include <ctype.h>
#include <strings.h>
#include <strings.h>
#include <assert.h>
#include <assert.h>
 
 
#include "zparser.h"
#include "zparser.h"
#include "zopcodes.h"
#include "zopcodes.h"
 
 
typedef ZPARSER::ZIPI ZIPI;     // A Zip Instruction (i.e. uint32)
 
 
 
#define IMMOP(OP,CND,IMM,A) (((OP&0x01f)<<22)|((A&0x0f)<<27)|((CND&0x07)<<19) \
#define IMMOP(OP,CND,IMM,A) (((OP&0x01f)<<22)|((A&0x0f)<<27)|((CND&0x07)<<19) \
                        | (IMM & 0x03ffff))
                        | (IMM & 0x03ffff))
 
 
#define DBLREGOP(OP,CND,IMM,B,A) (((OP&0x01f)<<22)|((A&0x0f)<<27)       \
#define DBLREGOP(OP,CND,IMM,B,A) (((OP&0x01f)<<22)|((A&0x0f)<<27)       \
                        |((CND&0x07)<<19)|(1<<18)|((B&0x0f)<<14)         \
                        |((CND&0x07)<<19)|(1<<18)|((B&0x0f)<<14)         \
                        | (IMM & 0x03fff))
                        | (IMM & 0x03fff))
 
 
#define LONG_MPY
#define LONG_MPY
 
 
ZPARSER::ZIPIMM ZPARSER::brev(ZIPIMM v) const {
ZPARSER::ZIPIMM ZPARSER::brev(ZIPIMM v) const {
        unsigned r=0, b;
        unsigned r=0, b;
 
 
        for(b=0; b<32; b++, v>>=1)
        for(b=0; b<32; b++, v>>=1)
                r = (r<<1)|(v&1);
                r = (r<<1)|(v&1);
 
 
        return r;
        return r;
}
}
 
 
ZIPI    ZPARSER::op_cmp(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_cmp(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_CMP, cnd, imm, b, a);
        return DBLREGOP(ZIPO_CMP, cnd, imm, b, a);
}
}
 
 
ZIPI    ZPARSER::op_cmp(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
ZIPI    ZPARSER::op_cmp(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_CMP, cnd, imm, a);
        return IMMOP(ZIPO_CMP, cnd, imm, a);
}
}
 
 
 
 
ZIPI    ZPARSER::op_tst(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_tst(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_TST, cnd, imm, b, a);
        return DBLREGOP(ZIPO_TST, cnd, imm, b, a);
} ZIPI  ZPARSER::op_tst(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_tst(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_TST, cnd, imm, a);
        return IMMOP(ZIPO_TST, cnd, imm, a);
}
}
 
 
ZIPI    ZPARSER::op_mov(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_mov(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        ZIPI    in;
        ZIPI    in;
 
 
        in = (ZIPO_MOV)<<22;
        in = (ZIPO_MOV)<<22;
        in |= ((a  &0x0f)<<27);
        in |= ((a  &0x0f)<<27);
        in |= ((cnd&0x07)<<19);
        in |= ((cnd&0x07)<<19);
        in |= ((b  &0x0f)<<14);
        in |= ((b  &0x0f)<<14);
        in |= ( imm&0x01fff);
        in |= ( imm&0x01fff);
 
 
 
 
        if (b & 0x10)
        if (b & 0x10)
                in |= (1<<13);
                in |= (1<<13);
        if (a & 0x10)
        if (a & 0x10)
                in |= (1<<18);
                in |= (1<<18);
        return in;
        return in;
}
}
 
 
 
 
ZIPI    ZPARSER::op_ldi(ZIPIMM imm, ZIPREG a) const {
ZIPI    ZPARSER::op_ldi(ZIPIMM imm, ZIPREG a) const {
        ZIPI    in;
        ZIPI    in;
        in = ((a&0x0f)<<27) | (ZIPO_LDI << 22) | (imm & ((1<<23)-1));
        in = ((a&0x0f)<<27) | (ZIPO_LDI << 22) | (imm & ((1<<23)-1));
        return in;
        return in;
}
}
 
 
ZIPI    ZPARSER::op_trap(ZIPCOND cnd, ZIPIMM imm) const {
ZIPI    ZPARSER::op_trap(ZIPCOND cnd, ZIPIMM imm) const {
        ZIPI    in;
        ZIPI    in;
        if (cnd != ZIPC_ALWAYS)
        if (cnd != ZIPC_ALWAYS)
                return op_ldilo(cnd, imm, ZIP_CC);
                return op_ldilo(cnd, imm, ZIP_CC);
        else
        else
                return op_ldi(imm, ZIP_CC);
                return op_ldi(imm, ZIP_CC);
        // in  = ((0x4f)<<24)|((cnd&0x07)<<21)|(1<<20)|((0x0e)<<16);
        // in  = ((0x4f)<<24)|((cnd&0x07)<<21)|(1<<20)|((0x0e)<<16);
        // in |= (imm & 0x0ffff);
        // in |= (imm & 0x0ffff);
        return in;
        return in;
}
}
 
 
ZIPI    ZPARSER::op_noop(void) const {
ZIPI    ZPARSER::op_noop(void) const {
        return 0x76000000;
        return 0x76000000;
} ZIPI  ZPARSER::op_break(void) const {
} ZIPI  ZPARSER::op_break(void) const {
        return 0x76400000;
        return 0x76400000;
} ZIPI  ZPARSER::op_lock(void) const {
} ZIPI  ZPARSER::op_lock(void) const {
        return 0x76800000;
        return 0x76800000;
}
}
 
 
#ifdef  LONG_MPY
#ifdef  LONG_MPY
ZIPI    ZPARSER::op_mpy(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_mpy(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_MPY, cnd, imm, b, a);
        return DBLREGOP(ZIPO_MPY, cnd, imm, b, a);
} ZIPI  ZPARSER::op_mpy(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_mpy(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_MPY, cnd, imm, a);
        return IMMOP(ZIPO_MPY, cnd, imm, a);
} ZIPI  ZPARSER::op_ldihi(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
 
        ZIPI    in = IMMOP(ZIPO_BREV, cnd, brev(imm)&0x0ffff, a);
 
        return in;
 
}
}
#else
#else
ZIPI    ZPARSER::op_ldihi(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
ZIPI    ZPARSER::op_ldihi(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        ZIPI    in = IMMOP(ZIPO_LDIHI, cnd, (imm & 0x0ffff), a);
        ZIPI    in = IMMOP(ZIPO_LDIHI, cnd, (imm & 0x0ffff), a);
        return in;
        return in;
}
}
#endif
#endif
ZIPI    ZPARSER::op_ldilo(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
ZIPI    ZPARSER::op_ldilo(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        ZIPI    in = IMMOP(ZIPO_LDILO, cnd, (imm & 0x0ffff), a);
        ZIPI    in = IMMOP(ZIPO_LDILO, cnd, (imm & 0x0ffff), a);
        return in;
        return in;
}
}
 
 
 
#ifdef  LONG_MPY
 
ZIPI    ZPARSER::op_mpyuhi(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
 
        return DBLREGOP(ZIPO_MPYUHI, cnd, imm, b, a);
 
} ZIPI  ZPARSER::op_mpyuhi(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
 
        return IMMOP(ZIPO_MPYUHI, cnd, imm & 0x0ffff, a);
 
}
 
 
 
ZIPI    ZPARSER::op_mpyshi(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
 
        return DBLREGOP(ZIPO_MPYSHI, cnd, imm, b, a);
 
} ZIPI  ZPARSER::op_mpyshi(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
 
        return IMMOP(ZIPO_MPYSHI, cnd, imm & 0x0ffff, a);
 
}
 
#else
ZIPI    ZPARSER::op_mpyu(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_mpyu(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_MPYU, cnd, imm, b, a);
        return DBLREGOP(ZIPO_MPYU, cnd, imm, b, a);
} ZIPI  ZPARSER::op_mpyu(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_mpyu(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_MPYU, cnd, imm & 0x0ffff, a);
        return IMMOP(ZIPO_MPYU, cnd, imm & 0x0ffff, a);
}
}
 
 
ZIPI    ZPARSER::op_mpys(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_mpys(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_MPYS, cnd, imm, b, a);
        return DBLREGOP(ZIPO_MPYS, cnd, imm, b, a);
} ZIPI  ZPARSER::op_mpys(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_mpys(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_MPYS, cnd, imm & 0x0ffff, a);
        return IMMOP(ZIPO_MPYS, cnd, imm & 0x0ffff, a);
}
}
 
#endif
 
 
ZIPI    ZPARSER::op_rol(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_rol(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_ROL, cnd, imm, b, a);
        return DBLREGOP(ZIPO_ROL, cnd, imm, b, a);
} ZIPI  ZPARSER::op_rol(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_rol(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_ROL, cnd, imm, a);
        return IMMOP(ZIPO_ROL, cnd, imm, a);
}
}
 
 
ZIPI    ZPARSER::op_popc(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_popc(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_POPC, cnd, imm, b, a);
        return DBLREGOP(ZIPO_POPC, cnd, imm, b, a);
} ZIPI  ZPARSER::op_popc(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_popc(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_POPC, cnd, imm, a);
        return IMMOP(ZIPO_POPC, cnd, imm, a);
}
}
 
 
ZIPI    ZPARSER::op_brev(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_brev(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_BREV, cnd, imm, b, a);
        return DBLREGOP(ZIPO_BREV, cnd, imm, b, a);
} ZIPI  ZPARSER::op_brev(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_brev(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_BREV, cnd, imm, a);
        return IMMOP(ZIPO_BREV, cnd, imm, a);
}
}
 
 
ZIPI    ZPARSER::op_lod(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_lod(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_LOD, cnd, imm, b, a);
        return DBLREGOP(ZIPO_LOD, cnd, imm, b, a);
} ZIPI  ZPARSER::op_lod(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_lod(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_LOD, cnd, imm, a);
        return IMMOP(ZIPO_LOD, cnd, imm, a);
}
}
 
 
 
 
ZIPI    ZPARSER::op_sto(ZIPCOND cnd, ZIPREG v, ZIPIMM imm, ZIPREG b) const {
ZIPI    ZPARSER::op_sto(ZIPCOND cnd, ZIPREG v, ZIPIMM imm, ZIPREG b) const {
        return DBLREGOP(ZIPO_STO, cnd, imm, b, v);
        return DBLREGOP(ZIPO_STO, cnd, imm, b, v);
} ZIPI  ZPARSER::op_sto(ZIPCOND cnd, ZIPREG v, ZIPIMM imm) const {
} ZIPI  ZPARSER::op_sto(ZIPCOND cnd, ZIPREG v, ZIPIMM imm) const {
        return IMMOP(ZIPO_STO, cnd, imm, v);
        return IMMOP(ZIPO_STO, cnd, imm, v);
}
}
 
 
 
 
ZIPI    ZPARSER::op_sub(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_sub(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_SUB, cnd, imm, b, a);
        return DBLREGOP(ZIPO_SUB, cnd, imm, b, a);
} ZIPI  ZPARSER::op_sub(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_sub(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        // While it seems like we might do well replacing a subtract immediate
        // While it seems like we might do well replacing a subtract immediate
        // with an add of the negative same, the conditions aren't the same
        // with an add of the negative same, the conditions aren't the same
        // when doing so.  Hence this is an invalid substitution.
        // when doing so.  Hence this is an invalid substitution.
        // return IMMOP(0xa, cnd, -imm, a); // Do an add of the negative of imm
        // return IMMOP(0xa, cnd, -imm, a); // Do an add of the negative of imm
        return IMMOP(ZIPO_SUB, cnd, imm, a);
        return IMMOP(ZIPO_SUB, cnd, imm, a);
}
}
 
 
 
 
ZIPI    ZPARSER::op_and(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_and(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_AND, cnd, imm, b, a);
        return DBLREGOP(ZIPO_AND, cnd, imm, b, a);
} ZIPI  ZPARSER::op_and(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_and(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_AND, cnd, imm, a);
        return IMMOP(ZIPO_AND, cnd, imm, a);
}
}
 
 
 
 
ZIPI    ZPARSER::op_add(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_add(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_ADD, cnd, imm, b, a);
        return DBLREGOP(ZIPO_ADD, cnd, imm, b, a);
} ZIPI  ZPARSER::op_add(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_add(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_ADD, cnd, imm, a);
        return IMMOP(ZIPO_ADD, cnd, imm, a);
}
}
 
 
 
 
ZIPI    ZPARSER::op_or(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_or(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_OR, cnd, imm, b, a);
        return DBLREGOP(ZIPO_OR, cnd, imm, b, a);
} ZIPI  ZPARSER::op_or(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_or(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_OR, cnd, imm, a);
        return IMMOP(ZIPO_OR, cnd, imm, a);
}
}
 
 
ZIPI    ZPARSER::op_xor(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_xor(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_XOR, cnd, imm, b, a);
        return DBLREGOP(ZIPO_XOR, cnd, imm, b, a);
} ZIPI  ZPARSER::op_xor(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_xor(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_XOR, cnd, imm, a);
        return IMMOP(ZIPO_XOR, cnd, imm, a);
}
}
 
 
ZIPI    ZPARSER::op_lsl(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_lsl(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_LSL, cnd, imm, b, a);
        return DBLREGOP(ZIPO_LSL, cnd, imm, b, a);
} ZIPI  ZPARSER::op_lsl(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_lsl(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_LSL, cnd, imm, a);
        return IMMOP(ZIPO_LSL, cnd, imm, a);
}
}
 
 
ZIPI    ZPARSER::op_asr(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_asr(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_ASR, cnd, imm, b, a);
        return DBLREGOP(ZIPO_ASR, cnd, imm, b, a);
} ZIPI  ZPARSER::op_asr(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_asr(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_ASR, cnd, imm, a);
        return IMMOP(ZIPO_ASR, cnd, imm, a);
}
}
 
 
ZIPI    ZPARSER::op_lsr(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_lsr(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_LSR, cnd, imm, b, a);
        return DBLREGOP(ZIPO_LSR, cnd, imm, b, a);
} ZIPI  ZPARSER::op_lsr(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_lsr(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_LSR, cnd, imm, a);
        return IMMOP(ZIPO_LSR, cnd, imm, a);
}
}
 
 
ZIPI    ZPARSER::op_divu(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_divu(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_DIVU, cnd, imm, b, a);
        return DBLREGOP(ZIPO_DIVU, cnd, imm, b, a);
} ZIPI  ZPARSER::op_divu(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_divu(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_DIVU, cnd, imm, a);
        return IMMOP(ZIPO_DIVU, cnd, imm, a);
}
}
 
 
ZIPI    ZPARSER::op_divs(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
ZIPI    ZPARSER::op_divs(ZIPCOND cnd, ZIPIMM imm, ZIPREG b, ZIPREG a) const {
        return DBLREGOP(ZIPO_DIVS, cnd, imm, b, a);
        return DBLREGOP(ZIPO_DIVS, cnd, imm, b, a);
} ZIPI  ZPARSER::op_divs(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
} ZIPI  ZPARSER::op_divs(ZIPCOND cnd, ZIPIMM imm, ZIPREG a) const {
        return IMMOP(ZIPO_DIVS, cnd, imm, a);
        return IMMOP(ZIPO_DIVS, cnd, imm, a);
}
}
 
 
ZPARSER::ZIPIMM ZPARSER::immediate(const ZIPI a) {
ZPARSER::ZIPIMM ZPARSER::immediate(const ZIPI a) {
        ZIPOP   op((ZIPOP)((a>>22)&0x01f));
        ZIPOP   op((ZIPOP)((a>>22)&0x01f));
        ZIPIMM  imm;
        ZIPIMM  imm;
 
 
        switch(op) {
        switch(op) {
                case ZIPO_MOV:
                case ZIPO_MOV:
                        imm = (a & 0x0fff); if (a&0x1fff) imm |= -0x1000; break;
                        imm = (a & 0x0fff); if (a&0x1fff) imm |= -0x1000; break;
                case ZIPO_LDI:
                case ZIPO_LDI:
                        imm = (a & 0x03fffff); break;
                        imm = (a & 0x03fffff); break;
                case ZIPO_LDIn:
                case ZIPO_LDIn:
                        imm = (a & 0x03fffff); imm |= -0x200000; break;
                        imm = (a & 0x03fffff); imm |= -0x200000; break;
                case ZIPO_LDILO: case ZIPO_LDIHI:
                case ZIPO_LDILO:
 
#ifndef LONG_MPY
 
                case ZIPO_LDIHI:
 
#endif
                        imm = (a & 0x0ffff);   break;
                        imm = (a & 0x0ffff);   break;
                default:
                default:
                        if (a & 0x040000) {
                        if (a & 0x040000) {
                                imm = (a&0x3fff);
                                imm = (a&0x3fff);
                                if (a&0x2000) imm |= -0x02000;
                                if (a&0x2000) imm |= -0x02000;
                        } else {
                        } else {
                                imm = (a&0x3ffff);
                                imm = (a&0x3ffff);
                                if (a&0x20000)
                                if (a&0x20000)
                                        imm |= -0x20000;
                                        imm |= -0x20000;
                        }
                        }
        }
        }
 
 
        return imm;
        return imm;
}
}
 
 
bool    ZPARSER::can_merge(const ZIPI a, const ZIPI b) {
bool    ZPARSER::can_merge(const ZIPI a, const ZIPI b) {
        // 1. Can't merge anything that's already merged
        // 1. Can't merge anything that's already merged
        if ((a|b) & 0x80000000)
        if ((a|b) & 0x80000000)
                return false;
                return false;
 
 
        ZIPOP   opa((ZIPOP)((a>>22)&0x01f)), opb((ZIPOP)((b>>22)&0x01f));
        ZIPOP   opa((ZIPOP)((a>>22)&0x01f)), opb((ZIPOP)((b>>22)&0x01f));
        // 2. Conditions
        // 2. Conditions
        {
        {
                ZIPCOND ca((ZIPCOND)((a>>19)&0x07)),cb((ZIPCOND)((b>>19)&0x07));
                ZIPCOND ca((ZIPCOND)((a>>19)&0x07)),cb((ZIPCOND)((b>>19)&0x07));
 
 
                if ((opa == ZIPO_LDI)||(opa == ZIPO_LDIn))
                if ((opa == ZIPO_LDI)||(opa == ZIPO_LDIn))
                        ca = ZIPC_ALWAYS;
                        ca = ZIPC_ALWAYS;
                if ((opb == ZIPO_LDI)||(opb == ZIPO_LDIn))
                if ((opb == ZIPO_LDI)||(opb == ZIPO_LDIn))
                        cb = ZIPC_ALWAYS;
                        cb = ZIPC_ALWAYS;
 
 
                if ((ca == ZIPC_ALWAYS)&&(cb != ZIPC_ALWAYS))
                if ((ca == ZIPC_ALWAYS)&&(cb != ZIPC_ALWAYS))
                        return false;
                        return false;
                if ((ca|cb) &0x04)
                if ((ca|cb) &0x04)
                        return false;
                        return false;
                if ((ca != ZIPC_ALWAYS)&&((cb != ca)&&(cb != ZIPC_ALWAYS)))
                if ((ca != ZIPC_ALWAYS)&&((cb != ca)&&(cb != ZIPC_ALWAYS)))
                        return false;
                        return false;
                // if ((ca != ZIPC_ALWAYS)||(cb != ZIPC_ALWAYS))
                // if ((ca != ZIPC_ALWAYS)||(cb != ZIPC_ALWAYS))
                        // return false;
                        // return false;
        }
        }
 
 
        // 3. Moves ... only move if the move doesn't address user registers
        // 3. Moves ... only move if the move doesn't address user registers
 
 
        if ((opa == ZIPO_MOV)&&(a & ((1<<18)|(1<<13))))
        if ((opa == ZIPO_MOV)&&(a & ((1<<18)|(1<<13))))
                return false;
                return false;
        if ((opb == ZIPO_MOV)&&(b & ((1<<18)|(1<<13))))
        if ((opb == ZIPO_MOV)&&(b & ((1<<18)|(1<<13))))
                return false;
                return false;
 
 
        // 4. Immediates.  If Register + Immediate, the answer is No.
        // 4. Immediates.  If Register + Immediate, the answer is No.
        ZIPIMM imma, immb;
        ZIPIMM imma, immb;
        switch(opa) {
        switch(opa) {
                case ZIPO_MOV:
                case ZIPO_MOV:
                        imma = (a & 0x03fff); if (a) return false; break;
                        imma = (a & 0x03fff); if (a) return false; break;
                case ZIPO_LDI: case ZIPO_LDIn:
                case ZIPO_LDI: case ZIPO_LDIn:
                case ZIPO_LDILO: case ZIPO_LDIHI:
                case ZIPO_LDILO:
 
#ifndef LONG_MPY
 
                case ZIPO_LDIHI:
 
#endif
                        imma = immediate(a);   break;
                        imma = immediate(a);   break;
                default:
                default:
                        if (a & 0x040000) {
                        if (a & 0x040000) {
                                imma = (a&0x3ffff);
                                imma = (a&0x3ffff);
                                // if (a&0x20000) a |= -0x20000;
                                // if (a&0x20000) a |= -0x20000;
                                if (imma != 0)
                                if (imma != 0)
                                        return false;
                                        return false;
                        } else {
                        } else {
                                imma = (a&0x3fff);
                                imma = (a&0x3fff);
                                if (a&0x2000) // Sign extension?
                                if (a&0x2000) // Sign extension?
                                        imma |= -0x02000;
                                        imma |= -0x02000;
                        }
                        }
        } switch(opb) {
        } switch(opb) {
                case ZIPO_MOV:
                case ZIPO_MOV:
                        immb = (b & 0x0fff); if (b) return false; break;
                        immb = (b & 0x0fff); if (b) return false; break;
                case ZIPO_LDI: case ZIPO_LDIn:
                case ZIPO_LDI: case ZIPO_LDIn:
                case ZIPO_LDILO: case ZIPO_LDIHI:
                case ZIPO_LDILO:
 
#ifndef LONG_MPY
 
                case ZIPO_LDIHI:
 
#endif
                        immb = immediate(b);   break;
                        immb = immediate(b);   break;
                default:
                default:
                        if (b & 0x040000) {
                        if (b & 0x040000) {
                                immb = (b&0x3fff);
                                immb = (b&0x3fff);
                                // if (b&0x2000) b |= -0x02000;
                                // if (b&0x2000) b |= -0x02000;
                                if (immb != 0)
                                if (immb != 0)
                                        return false;
                                        return false;
                        } else {
                        } else {
                                immb = (b&0x3ffff);
                                immb = (b&0x3ffff);
                                if (b&0x20000)
                                if (b&0x20000)
                                        immb |= -0x20000;
                                        immb |= -0x20000;
                        }
                        }
        }
        }
 
 
        if ((opa == ZIPO_LDI)||(opa == ZIPO_LDIn)||(opa == ZIPO_LDILO)||(opa == ZIPO_LDIHI)) {
        if ((opa == ZIPO_LDI)||(opa == ZIPO_LDIn)
 
#ifndef LONG_MPY
 
                ||(opa == ZIPO_LDIHI)
 
#endif
 
                ||(opa == ZIPO_LDILO)) {
                if ((imma > 15)||(imma < -16))
                if ((imma > 15)||(imma < -16))
                        return false;
                        return false;
        } else if ((imma > 7)||(imma < -8))
        } else if ((imma > 7)||(imma < -8))
                        return false;
                        return false;
        if ((opb == ZIPO_LDI)||(opb == ZIPO_LDIn)||(opb == ZIPO_LDILO)||(opb == ZIPO_LDIHI)) {
        if ((opb == ZIPO_LDI)||(opb == ZIPO_LDIn)
 
#ifndef LONG_MPY
 
                ||(opb == ZIPO_LDIHI)
 
#endif
 
                ||(opb == ZIPO_LDILO)) {
                if ((immb > 15)||(immb < -16))
                if ((immb > 15)||(immb < -16))
                        return false;
                        return false;
        } else if ((immb > 7)||(immb < -8))
        } else if ((immb > 7)||(immb < -8))
                        return false;
                        return false;
 
 
        return true;
        return true;
}
}
 
 
ZIPI    ZPARSER::merge(const ZIPI a, const ZIPI b) {
ZIPI    ZPARSER::merge(const ZIPI a, const ZIPI b) {
        assert(can_merge(a, b));
        assert(can_merge(a, b));
        ZIPI    ni;
        ZIPI    ni;
 
 
        ZIPCOND ca( (ZIPCOND)((a>>19)&0x007)), cb( (ZIPCOND)((b>>19)&0x007));
        ZIPCOND ca( (ZIPCOND)((a>>19)&0x007)), cb( (ZIPCOND)((b>>19)&0x007));
        ZIPOP   opa((ZIPOP)((a>>25)&0x012)), opb((ZIPOP)((b>>22)&0x01f));
        ZIPOP   opa((ZIPOP)((a>>25)&0x012)), opb((ZIPOP)((b>>22)&0x01f));
 
 
        if ((opa == ZIPO_LDI)||(opa == ZIPO_LDIn))
        if ((opa == ZIPO_LDI)||(opa == ZIPO_LDIn))
                ca = ZIPC_ALWAYS;
                ca = ZIPC_ALWAYS;
        if ((opb == ZIPO_LDI)||(opb == ZIPO_LDIn))
        if ((opb == ZIPO_LDI)||(opb == ZIPO_LDIn))
                cb = ZIPC_ALWAYS;
                cb = ZIPC_ALWAYS;
 
 
        ZIPIMM imma, immb;
        ZIPIMM imma, immb;
        imma = immediate(a);
        imma = immediate(a);
        immb = immediate(b);
        immb = immediate(b);
 
 
        ni = (opa << 26)|(opb<<9)|0x80000000;
        ni = (opa << 26)|(opb<<9)|0x80000000;
        if (ca != ZIPC_ALWAYS) {
        if (ca != ZIPC_ALWAYS) {
                ni |= (ca << 19);
                ni |= (ca << 19);
                if (cb == ca)
                if (cb == ca)
                        ni |= (1<<21);
                        ni |= (1<<21);
        }
        }
 
 
        // The result register(s)
        // The result register(s)
        ni |= (a & 0x78000000);
        ni |= (a & 0x78000000);
        ni |= ((b>>27)&0x0f)<<5;
        ni |= ((b>>27)&0x0f)<<5;
 
 
        // Are we using the register form of opB?
        // Are we using the register form of opB?
        switch(opa) {
        switch(opa) {
                case ZIPO_MOV: ni |= (a&0x078000); break; // Always a register
                case ZIPO_MOV: ni |= (a&0x078000); break; // Always a register
                case ZIPO_LDI: case ZIPO_LDIn:
                case ZIPO_LDI: case ZIPO_LDIn:
                case ZIPO_LDILO: case ZIPO_LDIHI:
                case ZIPO_LDILO:
 
#ifndef LONG_MPY
 
                case ZIPO_LDIHI:
 
#endif
                        ni |= (imma & 0x01f)<<14;
                        ni |= (imma & 0x01f)<<14;
                        break;
                        break;
                default:
                default:
                        if (a & 0x040000) {
                        if (a & 0x040000) {
                                ni |= (a&0x078000);
                                ni |= (a&0x078000);
                        } else
                        } else
                                ni |= (imma & 0x0f)<<14;
                                ni |= (imma & 0x0f)<<14;
        }
        }
 
 
        switch(opb) {
        switch(opb) {
                case ZIPO_MOV:
                case ZIPO_MOV:
                        ni |= ((b>>14)&0x0f)|0x10; break;
                        ni |= ((b>>14)&0x0f)|0x10; break;
                case ZIPO_LDI: case ZIPO_LDIn:
                case ZIPO_LDI: case ZIPO_LDIn:
                case ZIPO_LDILO: case ZIPO_LDIHI:
                case ZIPO_LDILO:
 
#ifndef LONG_MPY
 
                case ZIPO_LDIHI:
 
#endif
                        ni |= (immb & 0x01f);
                        ni |= (immb & 0x01f);
                        break;
                        break;
                default:
                default:
                        if (b & 0x040000) {
                        if (b & 0x040000) {
                                ni |= ((b>>14)&0x0f)|0x10;
                                ni |= ((b>>14)&0x0f)|0x10;
                        } else
                        } else
                                ni |= (immb & 0x0f);
                                ni |= (immb & 0x0f);
        }
        }
 
 
        return ni;
        return ni;
}
}
 
 

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