Subversion Repositories or1k

/* Table of opcodes for the motorola 88k family.

/* Table of opcodes for the motorola 88k family.

   Copyright 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc.

   Copyright 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc.

This file is part of GDB and GAS.

This file is part of GDB and GAS.

This program is free software; you can redistribute it and/or modify

This program is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2 of the License, or

the Free Software Foundation; either version 2 of the License, or

(at your option) any later version.

(at your option) any later version.

This program is distributed in the hope that it will be useful,

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

You should have received a copy of the GNU General Public License

along with this program; if not, write to the Free Software

along with this program; if not, write to the Free Software

Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

/*

/*

 *                      Disassembler Instruction Table

 *                      Disassembler Instruction Table

 *

 *

 *      The first field of the table is the opcode field. If an opcode

 *      The first field of the table is the opcode field. If an opcode

 *      is specified which has any non-opcode bits on, a system error

 *      is specified which has any non-opcode bits on, a system error

 *      will occur when the system attempts the install it into the

 *      will occur when the system attempts the install it into the

 *      instruction table.  The second parameter is a pointer to the

 *      instruction table.  The second parameter is a pointer to the

 *      instruction mnemonic. Each operand is specified by offset, width,

 *      instruction mnemonic. Each operand is specified by offset, width,

 *      and type. The offset is the bit number of the least significant

 *      and type. The offset is the bit number of the least significant

 *      bit of the operand with bit 0 being the least significant bit of

 *      bit of the operand with bit 0 being the least significant bit of

 *      the instruction. The width is the number of bits used to specify

 *      the instruction. The width is the number of bits used to specify

 *      the operand. The type specifies the output format to be used for

 *      the operand. The type specifies the output format to be used for

 *      the operand. The valid formats are: register, register indirect,

 *      the operand. The valid formats are: register, register indirect,

 *      hex constant, and bit field specification.  The last field is a

 *      hex constant, and bit field specification.  The last field is a

 *      pointer to the next instruction in the linked list.  These pointers

 *      pointer to the next instruction in the linked list.  These pointers

 *      are initialized by init_disasm().

 *      are initialized by init_disasm().

 *

 *

 *                              Structure Format

 *                              Structure Format

 *

 *

 *       struct INSTAB {

 *       struct INSTAB {

 *          UPINT opcode;

 *          UPINT opcode;

 *          char *mnemonic;

 *          char *mnemonic;

 *          struct OPSPEC op1,op2,op3;

 *          struct OPSPEC op1,op2,op3;

 *          struct SIM_FLAGS flgs;

 *          struct SIM_FLAGS flgs;

 *          struct INSTAB *next;

 *          struct INSTAB *next;

 *       }

 *       }

 *

 *

 *       struct OPSPEC {

 *       struct OPSPEC {

 *          UPINT offset:5;

 *          UPINT offset:5;

 *          UPINT width:6;

 *          UPINT width:6;

 *          UPINT type:5;

 *          UPINT type:5;

 *       }

 *       }

 *

 *

 *                              Revision History

 *                              Revision History

 *

 *

 *      Revision 1.0    11/08/85        Creation date

 *      Revision 1.0    11/08/85        Creation date

 *               1.1    02/05/86        Updated instruction mnemonic table MD

 *               1.1    02/05/86        Updated instruction mnemonic table MD

 *               1.2    06/16/86        Updated SIM_FLAGS for floating point

 *               1.2    06/16/86        Updated SIM_FLAGS for floating point

 *               1.3    09/20/86        Updated for new encoding

 *               1.3    09/20/86        Updated for new encoding

 *                      05/11/89        R. Trawick adapted from Motorola disassembler

 *                      05/11/89        R. Trawick adapted from Motorola disassembler

 */

 */

#include <stdio.h>

#include <stdio.h>

/*

/*

 * This file contains the structures and constants needed to build the M88000

 * This file contains the structures and constants needed to build the M88000

 * simulator.  It is the main include file, containing all the

 * simulator.  It is the main include file, containing all the

 * structures, macros and definitions except for the floating point

 * structures, macros and definitions except for the floating point

 * instruction set.

 * instruction set.

 */

 */

/*

/*

 * The following flag informs the Simulator as to what type of byte ordering

 * The following flag informs the Simulator as to what type of byte ordering

 * will be used. For instance, a BOFLAG = 1 indicates a DEC VAX and IBM type

 * will be used. For instance, a BOFLAG = 1 indicates a DEC VAX and IBM type

 * of ordering shall be used.

 * of ordering shall be used.

*/

*/

/* # define     BOFLAG   1 */                       /* BYTE ORDERING FLAG */

/* # define     BOFLAG   1 */                       /* BYTE ORDERING FLAG */

/* define the number of bits in the primary opcode field of the instruction,

/* define the number of bits in the primary opcode field of the instruction,

 * the destination field, the source 1 and source 2 fields.

 * the destination field, the source 1 and source 2 fields.

 */

 */

# define    OP       8                        /* size of opcode field */

# define    OP       8                        /* size of opcode field */

# define    DEST     6                        /* size of destination  */

# define    DEST     6                        /* size of destination  */

# define    SOURCE1  6                        /* size of source1      */

# define    SOURCE1  6                        /* size of source1      */

# define    SOURCE2  6                        /* size of source2      */

# define    SOURCE2  6                        /* size of source2      */

# define    REGs    32                        /* number of registers  */

# define    REGs    32                        /* number of registers  */

# define    WORD    long

# define    WORD    long

# define    FLAG    unsigned

# define    FLAG    unsigned

# define    STATE   short

# define    STATE   short

# define    TRUE     1

# define    TRUE     1

# define    FALSE    0

# define    FALSE    0

# define    READ     0

# define    READ     0

# define    WRITE    1

# define    WRITE    1

/* The next four equates define the priorities that the various classes

/* The next four equates define the priorities that the various classes

 * of instructions have regarding writing results back into registers and

 * of instructions have regarding writing results back into registers and

 * signalling exceptions.

 * signalling exceptions.

 */

 */

/* PMEM is also defined in <sys/param.h> on Delta 88's.  Sigh!  */

/* PMEM is also defined in <sys/param.h> on Delta 88's.  Sigh!  */

#undef PMEM

#undef PMEM

# define    PINT  0   /* Integer Priority */

# define    PINT  0   /* Integer Priority */

# define    PFLT  1   /* Floating Point Priority */

# define    PFLT  1   /* Floating Point Priority */

# define    PMEM  2   /* Memory Priority */

# define    PMEM  2   /* Memory Priority */

# define    NA    3   /* Not Applicable, instruction doesnt write to regs */

# define    NA    3   /* Not Applicable, instruction doesnt write to regs */

# define    HIPRI 3   /* highest of these priorities */

# define    HIPRI 3   /* highest of these priorities */

/* The instruction registers are an artificial mechanism to speed up

/* The instruction registers are an artificial mechanism to speed up

 * simulator execution.  In the real processor, an instruction register

 * simulator execution.  In the real processor, an instruction register

 * is 32 bits wide.  In the simulator, the 32 bit instruction is kept in

 * is 32 bits wide.  In the simulator, the 32 bit instruction is kept in

 * a structure field called rawop, and the instruction is partially decoded,

 * a structure field called rawop, and the instruction is partially decoded,

 * and split into various fields and flags which make up the other fields

 * and split into various fields and flags which make up the other fields

 * of the structure.

 * of the structure.

 * The partial decode is done when the instructions are initially loaded

 * The partial decode is done when the instructions are initially loaded

 * into simulator memory.  The simulator code memory is not an array of

 * into simulator memory.  The simulator code memory is not an array of

 * 32 bit words, but is an array of instruction register structures.

 * 32 bit words, but is an array of instruction register structures.

 * Yes this wastes memory, but it executes much quicker.

 * Yes this wastes memory, but it executes much quicker.

 */

 */

struct IR_FIELDS {

struct IR_FIELDS {

                    unsigned        op:OP,

                    unsigned        op:OP,

                                    dest: DEST,

                                    dest: DEST,

                                    src1: SOURCE1,

                                    src1: SOURCE1,

                                    src2: SOURCE2;

                                    src2: SOURCE2;

                              int   ltncy,

                              int   ltncy,

                                    extime,

                                    extime,

                                    wb_pri;     /* writeback priority     */

                                    wb_pri;     /* writeback priority     */

                    unsigned        imm_flags:2,/* immediate size         */

                    unsigned        imm_flags:2,/* immediate size         */

                                    rs1_used:1, /* register source 1 used */

                                    rs1_used:1, /* register source 1 used */

                                    rs2_used:1, /* register source 2 used */

                                    rs2_used:1, /* register source 2 used */

                                    rsd_used:1, /* register source/dest. used */

                                    rsd_used:1, /* register source/dest. used */

                                    c_flag:1,   /* complement      */

                                    c_flag:1,   /* complement      */

                                    u_flag:1,   /* upper half word */

                                    u_flag:1,   /* upper half word */

                                    n_flag:1,   /* execute next    */

                                    n_flag:1,   /* execute next    */

                                    wb_flag:1,  /* uses writeback slot */

                                    wb_flag:1,  /* uses writeback slot */

                                    dest_64:1,  /* dest size       */

                                    dest_64:1,  /* dest size       */

                                    s1_64:1,    /* source 1 size   */

                                    s1_64:1,    /* source 1 size   */

                                    s2_64:1,    /* source 2 size   */

                                    s2_64:1,    /* source 2 size   */

                                    scale_flag:1, /* scaled register */

                                    scale_flag:1, /* scaled register */

                                    brk_flg:1;

                                    brk_flg:1;

                 };

                 };

struct  mem_segs {

struct  mem_segs {

        struct mem_wrd *seg;                    /* pointer (returned by calloc) to segment */

        struct mem_wrd *seg;                    /* pointer (returned by calloc) to segment */

        unsigned long baseaddr;                 /* base load address from file headers */

        unsigned long baseaddr;                 /* base load address from file headers */

        unsigned long endaddr;                  /* Ending address of segment */

        unsigned long endaddr;                  /* Ending address of segment */

        int           flags;                    /* segment control flags (none defined 12/5/86) */

        int           flags;                    /* segment control flags (none defined 12/5/86) */

};

};

#define MAXSEGS         (10)                    /* max number of segment allowed */

#define MAXSEGS         (10)                    /* max number of segment allowed */

#define MEMSEGSIZE      (sizeof(struct mem_segs))/* size of mem_segs structure */

#define MEMSEGSIZE      (sizeof(struct mem_segs))/* size of mem_segs structure */

#define BRK_RD          (0x01)                  /* break on memory read */

#define BRK_RD          (0x01)                  /* break on memory read */

#define BRK_WR          (0x02)                  /* break on memory write */

#define BRK_WR          (0x02)                  /* break on memory write */

#define BRK_EXEC        (0x04)                  /* break on execution */

#define BRK_EXEC        (0x04)                  /* break on execution */

#define BRK_CNT         (0x08)                  /* break on terminal count */

#define BRK_CNT         (0x08)                  /* break on terminal count */

struct  mem_wrd {

struct  mem_wrd {

        struct IR_FIELDS opcode;                /* simulator instruction break down */

        struct IR_FIELDS opcode;                /* simulator instruction break down */

        union {

        union {

                unsigned long  l;               /* memory element break down */

                unsigned long  l;               /* memory element break down */

                unsigned short s[2];

                unsigned short s[2];

                unsigned char  c[4];

                unsigned char  c[4];

        } mem;

        } mem;

};

};

#define MEMWRDSIZE      (sizeof(struct mem_wrd))        /* size of each 32 bit memory model */

#define MEMWRDSIZE      (sizeof(struct mem_wrd))        /* size of each 32 bit memory model */

/* External declarations */

/* External declarations */

extern  struct mem_segs memory[];

extern  struct mem_segs memory[];

extern  struct PROCESSOR m78000;

extern  struct PROCESSOR m78000;

struct  PROCESSOR   {

struct  PROCESSOR   {

             unsigned WORD

             unsigned WORD

                            ip,          /* execute instruction pointer */

                            ip,          /* execute instruction pointer */

                            vbr,         /* vector base register */

                            vbr,         /* vector base register */

                            psr;         /* processor status register */

                            psr;         /* processor status register */

                    WORD    S1bus, /* source 1 */

                    WORD    S1bus, /* source 1 */

                            S2bus, /* source 2 */

                            S2bus, /* source 2 */

                            Dbus,  /* destination */

                            Dbus,  /* destination */

                            DAbus, /* data address bus */

                            DAbus, /* data address bus */

                            ALU,

                            ALU,

                            Regs[REGs],       /* data registers */

                            Regs[REGs],       /* data registers */

                            time_left[REGs],  /* max clocks before reg is available */

                            time_left[REGs],  /* max clocks before reg is available */

                            wb_pri[REGs],     /* writeback priority of reg */

                            wb_pri[REGs],     /* writeback priority of reg */

                            SFU0_regs[REGs],  /* integer unit control regs */

                            SFU0_regs[REGs],  /* integer unit control regs */

                            SFU1_regs[REGs],  /* floating point control regs */

                            SFU1_regs[REGs],  /* floating point control regs */

                            Scoreboard[REGs],

                            Scoreboard[REGs],

                            Vbr;

                            Vbr;

            unsigned WORD   scoreboard,

            unsigned WORD   scoreboard,

                            Psw,

                            Psw,

                            Tpsw;

                            Tpsw;

                    FLAG   jump_pending:1;   /* waiting for a jump instr. */

                    FLAG   jump_pending:1;   /* waiting for a jump instr. */

                    };

                    };

# define    i26bit      1    /* size of immediate field */

# define    i26bit      1    /* size of immediate field */

# define    i16bit      2

# define    i16bit      2

# define    i10bit      3

# define    i10bit      3

/* Definitions for fields in psr */

/* Definitions for fields in psr */

# define mode  31

# define mode  31

# define rbo   30

# define rbo   30

# define ser   29

# define ser   29

# define carry 28

# define carry 28

# define sf7m  11

# define sf7m  11

# define sf6m  10

# define sf6m  10

# define sf5m   9

# define sf5m   9

# define sf4m   8

# define sf4m   8

# define sf3m   7

# define sf3m   7

# define sf2m   6

# define sf2m   6

# define sf1m   5

# define sf1m   5

# define mam    4

# define mam    4

# define inm    3

# define inm    3

# define exm    2

# define exm    2

# define trm    1

# define trm    1

# define ovfm   0

# define ovfm   0

#define     MODEMASK   (1<<(mode-1))

#define     MODEMASK   (1<<(mode-1))

# define    SILENT     0   /* simulate without output to crt */

# define    SILENT     0   /* simulate without output to crt */

# define    VERBOSE    1   /* simulate in verbose mode */

# define    VERBOSE    1   /* simulate in verbose mode */

# define    PR_INSTR   2   /* only print instructions */

# define    PR_INSTR   2   /* only print instructions */

# define    RESET      16 /* reset phase */

# define    RESET      16 /* reset phase */

# define    PHASE1     0  /* data path phases */

# define    PHASE1     0  /* data path phases */

# define    PHASE2     1

# define    PHASE2     1

/* the 1 clock operations */

/* the 1 clock operations */

# define    ADDU        1

# define    ADDU        1

# define    ADDC        2

# define    ADDC        2

# define    ADDUC       3

# define    ADDUC       3

# define    ADD         4

# define    ADD         4

# define    SUBU    ADD+1

# define    SUBU    ADD+1

# define    SUBB    ADD+2

# define    SUBB    ADD+2

# define    SUBUB   ADD+3

# define    SUBUB   ADD+3

# define    SUB     ADD+4

# define    SUB     ADD+4

# define    AND_    ADD+5

# define    AND_    ADD+5

# define    OR      ADD+6

# define    OR      ADD+6

# define    XOR     ADD+7

# define    XOR     ADD+7

# define    CMP     ADD+8

# define    CMP     ADD+8

/* the LOADS */

/* the LOADS */

# define    LDAB    CMP+1

# define    LDAB    CMP+1

# define    LDAH    CMP+2

# define    LDAH    CMP+2

# define    LDA     CMP+3

# define    LDA     CMP+3

# define    LDAD    CMP+4

# define    LDAD    CMP+4

# define    LDB   LDAD+1

# define    LDB   LDAD+1

# define    LDH   LDAD+2

# define    LDH   LDAD+2

# define    LD    LDAD+3

# define    LD    LDAD+3

# define    LDD   LDAD+4

# define    LDD   LDAD+4

# define    LDBU  LDAD+5

# define    LDBU  LDAD+5

# define    LDHU  LDAD+6

# define    LDHU  LDAD+6

/* the STORES */

/* the STORES */

# define    STB    LDHU+1

# define    STB    LDHU+1

# define    STH    LDHU+2

# define    STH    LDHU+2

# define    ST     LDHU+3

# define    ST     LDHU+3

# define    STD    LDHU+4

# define    STD    LDHU+4

/* the exchange */

/* the exchange */

# define    XMEMBU LDHU+5

# define    XMEMBU LDHU+5

# define    XMEM   LDHU+6

# define    XMEM   LDHU+6

/* the branches */

/* the branches */

# define    JSR    STD+1

# define    JSR    STD+1

# define    BSR    STD+2

# define    BSR    STD+2

# define    BR     STD+3

# define    BR     STD+3

# define    JMP    STD+4

# define    JMP    STD+4

# define    BB1    STD+5

# define    BB1    STD+5

# define    BB0    STD+6

# define    BB0    STD+6

# define    RTN    STD+7

# define    RTN    STD+7

# define    BCND   STD+8

# define    BCND   STD+8

/* the TRAPS */

/* the TRAPS */

# define    TB1    BCND+1

# define    TB1    BCND+1

# define    TB0    BCND+2

# define    TB0    BCND+2

# define    TCND   BCND+3

# define    TCND   BCND+3

# define    RTE    BCND+4

# define    RTE    BCND+4

# define    TBND   BCND+5

# define    TBND   BCND+5

/* the MISC instructions */

/* the MISC instructions */

# define    MUL     TBND + 1

# define    MUL     TBND + 1

# define    DIV     MUL  +2

# define    DIV     MUL  +2

# define    DIVU    MUL  +3

# define    DIVU    MUL  +3

# define    MASK    MUL  +4

# define    MASK    MUL  +4

# define    FF0     MUL  +5

# define    FF0     MUL  +5

# define    FF1     MUL  +6

# define    FF1     MUL  +6

# define    CLR     MUL  +7

# define    CLR     MUL  +7

# define    SET     MUL  +8

# define    SET     MUL  +8

# define    EXT     MUL  +9

# define    EXT     MUL  +9

# define    EXTU    MUL  +10

# define    EXTU    MUL  +10

# define    MAK     MUL  +11

# define    MAK     MUL  +11

# define    ROT     MUL  +12

# define    ROT     MUL  +12

/* control register manipulations */

/* control register manipulations */

# define    LDCR    ROT  +1

# define    LDCR    ROT  +1

# define    STCR    ROT  +2

# define    STCR    ROT  +2

# define    XCR     ROT  +3

# define    XCR     ROT  +3

# define    FLDCR    ROT  +4

# define    FLDCR    ROT  +4

# define    FSTCR    ROT  +5

# define    FSTCR    ROT  +5

# define    FXCR     ROT  +6

# define    FXCR     ROT  +6

# define    NOP     XCR +1

# define    NOP     XCR +1

/* floating point instructions */

/* floating point instructions */

# define    FADD    NOP +1

# define    FADD    NOP +1

# define    FSUB    NOP +2

# define    FSUB    NOP +2

# define    FMUL    NOP +3

# define    FMUL    NOP +3

# define    FDIV    NOP +4

# define    FDIV    NOP +4

# define    FSQRT   NOP +5

# define    FSQRT   NOP +5

# define    FCMP    NOP +6

# define    FCMP    NOP +6

# define    FIP     NOP +7

# define    FIP     NOP +7

# define    FLT     NOP +8

# define    FLT     NOP +8

# define    INT     NOP +9

# define    INT     NOP +9

# define    NINT    NOP +10

# define    NINT    NOP +10

# define    TRNC    NOP +11

# define    TRNC    NOP +11

# define    FLDC   NOP +12

# define    FLDC   NOP +12

# define    FSTC   NOP +13

# define    FSTC   NOP +13

# define    FXC    NOP +14

# define    FXC    NOP +14

# define UEXT(src,off,wid) ((((unsigned int)(src))>>(off)) & ((1<<(wid)) - 1))

# define UEXT(src,off,wid) ((((unsigned int)(src))>>(off)) & ((1<<(wid)) - 1))

# define SEXT(src,off,wid) (((((int)(src))<<(32-((off)+(wid)))) >>(32-(wid))) )

# define SEXT(src,off,wid) (((((int)(src))<<(32-((off)+(wid)))) >>(32-(wid))) )

# define MAKE(src,off,wid) \

# define MAKE(src,off,wid) \

  ((((unsigned int)(src)) & ((1<<(wid)) - 1)) << (off))

  ((((unsigned int)(src)) & ((1<<(wid)) - 1)) << (off))

# define opword(n) (unsigned long) (memaddr->mem.l)

# define opword(n) (unsigned long) (memaddr->mem.l)

/*  Constants and Masks */

/*  Constants and Masks */

#define SFU0       0x80000000

#define SFU0       0x80000000

#define SFU1       0x84000000

#define SFU1       0x84000000

#define SFU7       0x9c000000

#define SFU7       0x9c000000

#define RRI10      0xf0000000

#define RRI10      0xf0000000

#define RRR        0xf4000000

#define RRR        0xf4000000

#define SFUMASK    0xfc00ffe0

#define SFUMASK    0xfc00ffe0

#define RRRMASK    0xfc00ffe0

#define RRRMASK    0xfc00ffe0

#define RRI10MASK  0xfc00fc00

#define RRI10MASK  0xfc00fc00

#define DEFMASK    0xfc000000

#define DEFMASK    0xfc000000

#define CTRL       0x0000f000

#define CTRL       0x0000f000

#define CTRLMASK   0xfc00f800

#define CTRLMASK   0xfc00f800

/* Operands types */

/* Operands types */

enum operand_type {

enum operand_type {

  HEX = 1,

  HEX = 1,

  REG = 2,

  REG = 2,

  CONT = 3,

  CONT = 3,

  IND = 3,

  IND = 3,

  BF = 4,

  BF = 4,

  REGSC = 5    /* scaled register */,

  REGSC = 5    /* scaled register */,

  CRREG = 6    /* control register */,

  CRREG = 6    /* control register */,

  FCRREG = 7    /* floating point control register */,

  FCRREG = 7    /* floating point control register */,

  PCREL = 8,

  PCREL = 8,

  CONDMASK = 9,

  CONDMASK = 9,

  XREG = 10, /* extended register */

  XREG = 10, /* extended register */

  DEC = 11, /* decimal */

  DEC = 11, /* decimal */

};

};

/* Hashing Specification */

/* Hashing Specification */

#define HASHVAL     79

#define HASHVAL     79

/* Type definitions */

/* Type definitions */

typedef unsigned int UINT;

typedef unsigned int UINT;

/* Structure templates */

/* Structure templates */

#if never

#if never

typedef struct {

typedef struct {

   unsigned int offset:5;

   unsigned int offset:5;

   unsigned int width:6;

   unsigned int width:6;

   unsigned int type:5;

   unsigned int type:5;

} OPSPEC;

} OPSPEC;

#endif

#endif

typedef struct {

typedef struct {

   unsigned int offset;

   unsigned int offset;

   unsigned int width;

   unsigned int width;

   enum operand_type type;

   enum operand_type type;

} OPSPEC;

} OPSPEC;

        struct SIM_FLAGS {

        struct SIM_FLAGS {

              int  ltncy,   /* latency (max number of clocks needed to execute) */

              int  ltncy,   /* latency (max number of clocks needed to execute) */

                  extime,   /* execution time (min number of clocks needed to execute) */

                  extime,   /* execution time (min number of clocks needed to execute) */

                  wb_pri;   /* writeback slot priority */

                  wb_pri;   /* writeback slot priority */

   unsigned         op:OP,   /* simulator version of opcode */

   unsigned         op:OP,   /* simulator version of opcode */

             imm_flags:2,   /* 10,16 or 26 bit immediate flags */

             imm_flags:2,   /* 10,16 or 26 bit immediate flags */

              rs1_used:1,   /* register source 1 used */

              rs1_used:1,   /* register source 1 used */

              rs2_used:1,   /* register source 2 used */

              rs2_used:1,   /* register source 2 used */

              rsd_used:1,   /* register source/dest used */

              rsd_used:1,   /* register source/dest used */

                c_flag:1,   /* complement */

                c_flag:1,   /* complement */

                u_flag:1,   /* upper half word */

                u_flag:1,   /* upper half word */

                n_flag:1,   /* execute next */

                n_flag:1,   /* execute next */

               wb_flag:1,   /* uses writeback slot */

               wb_flag:1,   /* uses writeback slot */

               dest_64:1,   /* double precision dest */

               dest_64:1,   /* double precision dest */

                 s1_64:1,   /* double precision source 1 */

                 s1_64:1,   /* double precision source 1 */

                 s2_64:1,   /* double precision source 2 */

                 s2_64:1,   /* double precision source 2 */

            scale_flag:1;   /* register is scaled */

            scale_flag:1;   /* register is scaled */

};

};

typedef struct INSTRUCTAB {

typedef struct INSTRUCTAB {

   unsigned int  opcode;

   unsigned int  opcode;

   char          *mnemonic;

   char          *mnemonic;

   OPSPEC        op1,op2,op3;

   OPSPEC        op1,op2,op3;

   struct SIM_FLAGS flgs;

   struct SIM_FLAGS flgs;

   struct INSTRUCTAB    *next;

   struct INSTRUCTAB    *next;

} INSTAB;

} INSTAB;

#define NO_OPERAND {0,0,0}

#define NO_OPERAND {0,0,0}

/* Opcode     Mnemonic       Op 1 Spec     Op 2 Spec    Op 3 Spec         Simflags             Next  */

/* Opcode     Mnemonic       Op 1 Spec     Op 2 Spec    Op 3 Spec         Simflags             Next  */

static INSTAB  instructions[] = {

static INSTAB  instructions[] = {

  {0xf400c800,"jsr         ",{0,5,REG}   ,NO_OPERAND      ,NO_OPERAND   , {2,2,NA,JSR ,          0,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xf400c800,"jsr         ",{0,5,REG}   ,NO_OPERAND      ,NO_OPERAND   , {2,2,NA,JSR ,          0,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xf400cc00,"jsr.n       ",{0,5,REG}   ,NO_OPERAND      ,NO_OPERAND   , {1,1,NA,JSR ,          0,0,1,0,0,0,1,1,0,0,0,0}, NULL },

  {0xf400cc00,"jsr.n       ",{0,5,REG}   ,NO_OPERAND      ,NO_OPERAND   , {1,1,NA,JSR ,          0,0,1,0,0,0,1,1,0,0,0,0}, NULL },

  {0xf400c000,"jmp         ",{0,5,REG}   ,NO_OPERAND      ,NO_OPERAND   , {2,2,NA,JMP ,          0,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xf400c000,"jmp         ",{0,5,REG}   ,NO_OPERAND      ,NO_OPERAND   , {2,2,NA,JMP ,          0,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xf400c400,"jmp.n       ",{0,5,REG}   ,NO_OPERAND      ,NO_OPERAND   , {1,1,NA,JMP ,          0,0,1,0,0,0,1,1,0,0,0,0}, NULL },

  {0xf400c400,"jmp.n       ",{0,5,REG}   ,NO_OPERAND      ,NO_OPERAND   , {1,1,NA,JMP ,          0,0,1,0,0,0,1,1,0,0,0,0}, NULL },

  {0xc8000000,"bsr         ",{0,26,PCREL},NO_OPERAND      ,NO_OPERAND   , {2,2,NA,BSR ,     i26bit,0,0,0,0,0,0,1,0,0,0,0}, NULL },

  {0xc8000000,"bsr         ",{0,26,PCREL},NO_OPERAND      ,NO_OPERAND   , {2,2,NA,BSR ,     i26bit,0,0,0,0,0,0,1,0,0,0,0}, NULL },

  {0xcc000000,"bsr.n       ",{0,26,PCREL},NO_OPERAND      ,NO_OPERAND   , {1,1,NA,BSR ,     i26bit,0,0,0,0,0,1,1,0,0,0,0}, NULL },

  {0xcc000000,"bsr.n       ",{0,26,PCREL},NO_OPERAND      ,NO_OPERAND   , {1,1,NA,BSR ,     i26bit,0,0,0,0,0,1,1,0,0,0,0}, NULL },

  {0xc0000000,"br          ",{0,26,PCREL},NO_OPERAND      ,NO_OPERAND   , {2,2,NA,BR  ,     i26bit,0,0,0,0,0,0,1,0,0,0,0}, NULL },

  {0xc0000000,"br          ",{0,26,PCREL},NO_OPERAND      ,NO_OPERAND   , {2,2,NA,BR  ,     i26bit,0,0,0,0,0,0,1,0,0,0,0}, NULL },

  {0xc4000000,"br.n        ",{0,26,PCREL},NO_OPERAND      ,NO_OPERAND   , {1,1,NA,BR  ,     i26bit,0,0,0,0,0,1,1,0,0,0,0}, NULL },

  {0xc4000000,"br.n        ",{0,26,PCREL},NO_OPERAND      ,NO_OPERAND   , {1,1,NA,BR  ,     i26bit,0,0,0,0,0,1,1,0,0,0,0}, NULL },

  {0xd0000000,"bb0         ",{21,5,HEX}  ,{16,5,REG}   ,{0,16,PCREL},{2,2,NA,BB0,     i16bit,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xd0000000,"bb0         ",{21,5,HEX}  ,{16,5,REG}   ,{0,16,PCREL},{2,2,NA,BB0,     i16bit,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xd4000000,"bb0.n       ",{21,5,HEX}  ,{16,5,REG}   ,{0,16,PCREL},{1,1,NA,BB0,     i16bit,0,1,0,0,0,1,1,0,0,0,0}, NULL },

  {0xd4000000,"bb0.n       ",{21,5,HEX}  ,{16,5,REG}   ,{0,16,PCREL},{1,1,NA,BB0,     i16bit,0,1,0,0,0,1,1,0,0,0,0}, NULL },

  {0xd8000000,"bb1         ",{21,5,HEX},{16,5,REG}     ,{0,16,PCREL},{2,2,NA,BB1,     i16bit,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xd8000000,"bb1         ",{21,5,HEX},{16,5,REG}     ,{0,16,PCREL},{2,2,NA,BB1,     i16bit,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xdc000000,"bb1.n       ",{21,5,HEX},{16,5,REG}     ,{0,16,PCREL},{1,1,NA,BB1,     i16bit,0,1,0,0,0,1,1,0,0,0,0}, NULL },

  {0xdc000000,"bb1.n       ",{21,5,HEX},{16,5,REG}     ,{0,16,PCREL},{1,1,NA,BB1,     i16bit,0,1,0,0,0,1,1,0,0,0,0}, NULL },

  {0xf000d000,"tb0         ",{21,5,HEX}  ,{16,5,REG}   ,{0,10,HEX}, {2,2,NA,TB0 ,     i10bit,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xf000d000,"tb0         ",{21,5,HEX}  ,{16,5,REG}   ,{0,10,HEX}, {2,2,NA,TB0 ,     i10bit,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xf000d800,"tb1         ",{21,5,HEX}  ,{16,5,REG}   ,{0,10,HEX}, {2,2,NA,TB1 ,     i10bit,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xf000d800,"tb1         ",{21,5,HEX}  ,{16,5,REG}   ,{0,10,HEX}, {2,2,NA,TB1 ,     i10bit,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xe8000000,"bcnd        ",{21,5,CONDMASK},{16,5,REG},{0,16,PCREL},{2,2,NA,BCND,    i16bit,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xe8000000,"bcnd        ",{21,5,CONDMASK},{16,5,REG},{0,16,PCREL},{2,2,NA,BCND,    i16bit,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xec000000,"bcnd.n      ",{21,5,CONDMASK},{16,5,REG},{0,16,PCREL},{1,1,NA,BCND,    i16bit,0,1,0,0,0,1,1,0,0,0,0}, NULL },

  {0xec000000,"bcnd.n      ",{21,5,CONDMASK},{16,5,REG},{0,16,PCREL},{1,1,NA,BCND,    i16bit,0,1,0,0,0,1,1,0,0,0,0}, NULL },

  {0xf000e800,"tcnd        ",{21,5,CONDMASK},{16,5,REG},{0,10,HEX}, {2,2,NA,TCND,     i10bit,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xf000e800,"tcnd        ",{21,5,CONDMASK},{16,5,REG},{0,10,HEX}, {2,2,NA,TCND,     i10bit,0,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xf8000000,"tbnd        ",{16,5,REG}  ,{0,16,HEX}   ,NO_OPERAND   , {2,2,NA,TBND,     i10bit,1,0,0,0,0,0,1,0,0,0,0}, NULL },

  {0xf8000000,"tbnd        ",{16,5,REG}  ,{0,16,HEX}   ,NO_OPERAND   , {2,2,NA,TBND,     i10bit,1,0,0,0,0,0,1,0,0,0,0}, NULL },

  {0xf400f800,"tbnd        ",{16,5,REG}  ,{0,5,REG}    ,NO_OPERAND   , {2,2,NA,TBND,          0,1,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xf400f800,"tbnd        ",{16,5,REG}  ,{0,5,REG}    ,NO_OPERAND   , {2,2,NA,TBND,          0,1,1,0,0,0,0,1,0,0,0,0}, NULL },

  {0xf400fc00,"rte         ",NO_OPERAND     ,NO_OPERAND      ,NO_OPERAND   , {2,2,NA,RTE ,          0,0,0,0,0,0,0,1,0,0,0,0}, NULL },

  {0xf400fc00,"rte         ",NO_OPERAND     ,NO_OPERAND      ,NO_OPERAND   , {2,2,NA,RTE ,          0,0,0,0,0,0,0,1,0,0,0,0}, NULL },

  {0x1c000000,"ld.b        ",{21,5,REG}  ,{16,5,REG}   ,{0,16,HEX}, {3,1,PMEM,LDB    ,i16bit,1,0,1,0,0,0,1,0,0,0,0}, NULL },

  {0x1c000000,"ld.b        ",{21,5,REG}  ,{16,5,REG}   ,{0,16,HEX}, {3,1,PMEM,LDB    ,i16bit,1,0,1,0,0,0,1,0,0,0,0}, NULL },

  {0xf4001c00,"ld.b        ",{21,5,REG}  ,{16,5,REG}   ,{0,5,REG} , {3,1,PMEM,LDB     ,    0,1,1,1,0,0,0,1,0,0,0,0}, NULL },