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/* mips.h.  Mips opcode list for GDB, the GNU debugger.

   Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001

   Free Software Foundation, Inc.

   Contributed by Ralph Campbell and OSF

   Commented and modified by Ian Lance Taylor, Cygnus Support

This file is part of GDB, GAS, and the GNU binutils.

GDB, GAS, and the GNU binutils are free software; you can redistribute

them and/or modify them under the terms of the GNU General Public

License as published by the Free Software Foundation; either version

1, or (at your option) any later version.

GDB, GAS, and the GNU binutils are distributed in the hope that they

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 file; see the file COPYING.  If not, write to the Free

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

#ifndef _MIPS_H_

#define _MIPS_H_

/* These are bit masks and shift counts to use to access the various

   fields of an instruction.  To retrieve the X field of an

   instruction, use the expression

        (i >> OP_SH_X) & OP_MASK_X

   To set the same field (to j), use

        i = (i &~ (OP_MASK_X << OP_SH_X)) | (j << OP_SH_X)

   Make sure you use fields that are appropriate for the instruction,

   of course.

   The 'i' format uses OP, RS, RT and IMMEDIATE.

   The 'j' format uses OP and TARGET.

   The 'r' format uses OP, RS, RT, RD, SHAMT and FUNCT.

   The 'b' format uses OP, RS, RT and DELTA.

   The floating point 'i' format uses OP, RS, RT and IMMEDIATE.

   The floating point 'r' format uses OP, FMT, FT, FS, FD and FUNCT.

   A breakpoint instruction uses OP, CODE and SPEC (10 bits of the

   breakpoint instruction are not defined; Kane says the breakpoint

   code field in BREAK is 20 bits; yet MIPS assemblers and debuggers

   only use ten bits).  An optional two-operand form of break/sdbbp

   allows the lower ten bits to be set too, and MIPS32 and later

   architectures allow 20 bits to be set with a signal operand

   (using CODE20).

   The syscall instruction uses CODE20.

   The general coprocessor instructions use COPZ.  */

#define OP_MASK_OP              0x3f

#define OP_SH_OP                26

#define OP_MASK_RS              0x1f

#define OP_SH_RS                21

#define OP_MASK_FR              0x1f

#define OP_SH_FR                21

#define OP_MASK_FMT             0x1f

#define OP_SH_FMT               21

#define OP_MASK_BCC             0x7

#define OP_SH_BCC               18

#define OP_MASK_CODE            0x3ff

#define OP_SH_CODE              16

#define OP_MASK_CODE2           0x3ff

#define OP_SH_CODE2             6

#define OP_MASK_RT              0x1f

#define OP_SH_RT                16

#define OP_MASK_FT              0x1f

#define OP_SH_FT                16

#define OP_MASK_CACHE           0x1f

#define OP_SH_CACHE             16

#define OP_MASK_RD              0x1f

#define OP_SH_RD                11

#define OP_MASK_FS              0x1f

#define OP_SH_FS                11

#define OP_MASK_PREFX           0x1f

#define OP_SH_PREFX             11

#define OP_MASK_CCC             0x7

#define OP_SH_CCC               8

#define OP_MASK_CODE20          0xfffff /* 20 bit syscall/breakpoint code.  */

#define OP_SH_CODE20            6

#define OP_MASK_SHAMT           0x1f

#define OP_SH_SHAMT             6

#define OP_MASK_FD              0x1f

#define OP_SH_FD                6

#define OP_MASK_TARGET          0x3ffffff

#define OP_SH_TARGET            0

#define OP_MASK_COPZ            0x1ffffff

#define OP_SH_COPZ              0

#define OP_MASK_IMMEDIATE       0xffff

#define OP_SH_IMMEDIATE         0

#define OP_MASK_DELTA           0xffff

#define OP_SH_DELTA             0

#define OP_MASK_FUNCT           0x3f

#define OP_SH_FUNCT             0

#define OP_MASK_SPEC            0x3f

#define OP_SH_SPEC              0

#define OP_SH_LOCC              8       /* FP condition code.  */

#define OP_SH_HICC              18      /* FP condition code.  */

#define OP_MASK_CC              0x7

#define OP_SH_COP1NORM          25      /* Normal COP1 encoding.  */

#define OP_MASK_COP1NORM        0x1     /* a single bit.  */

#define OP_SH_COP1SPEC          21      /* COP1 encodings.  */

#define OP_MASK_COP1SPEC        0xf

#define OP_MASK_COP1SCLR        0x4

#define OP_MASK_COP1CMP         0x3

#define OP_SH_COP1CMP           4

#define OP_SH_FORMAT            21      /* FP short format field.  */

#define OP_MASK_FORMAT          0x7

#define OP_SH_TRUE              16

#define OP_MASK_TRUE            0x1

#define OP_SH_GE                17

#define OP_MASK_GE              0x01

#define OP_SH_UNSIGNED          16

#define OP_MASK_UNSIGNED        0x1

#define OP_SH_HINT              16

#define OP_MASK_HINT            0x1f

#define OP_SH_MMI               0       /* Multimedia (parallel) op.  */

#define OP_MASK_MMI             0x3f

#define OP_SH_MMISUB            6

#define OP_MASK_MMISUB          0x1f

#define OP_MASK_PERFREG         0x1f    /* Performance monitoring.  */

#define OP_SH_PERFREG           1

#define OP_SH_SEL               0        /* Coprocessor select field.  */

#define OP_MASK_SEL             0x7     /* The sel field of mfcZ and mtcZ.  */

#define OP_SH_CODE19            6       /* 19 bit wait code.  */

#define OP_MASK_CODE19          0x7ffff

/* This structure holds information for a particular instruction.  */

struct mips_opcode

{

  /* The name of the instruction.  */

  const char *name;

  /* A string describing the arguments for this instruction.  */

  const char *args;

  /* The basic opcode for the instruction.  When assembling, this

     opcode is modified by the arguments to produce the actual opcode

     that is used.  If pinfo is INSN_MACRO, then this is 0.  */

  unsigned long match;

  /* If pinfo is not INSN_MACRO, then this is a bit mask for the

     relevant portions of the opcode when disassembling.  If the

     actual opcode anded with the match field equals the opcode field,

     then we have found the correct instruction.  If pinfo is

     INSN_MACRO, then this field is the macro identifier.  */

  unsigned long mask;

  /* For a macro, this is INSN_MACRO.  Otherwise, it is a collection

     of bits describing the instruction, notably any relevant hazard

     information.  */

  unsigned long pinfo;

  /* A collection of bits describing the instruction sets of which this

     instruction or macro is a member. */

  unsigned long membership;

};

/* These are the characters which may appears in the args field of an

   instruction.  They appear in the order in which the fields appear

   when the instruction is used.  Commas and parentheses in the args

   string are ignored when assembling, and written into the output

   when disassembling.

   Each of these characters corresponds to a mask field defined above.

   "<" 5 bit shift amount (OP_*_SHAMT)

   ">" shift amount between 32 and 63, stored after subtracting 32 (OP_*_SHAMT)

   "a" 26 bit target address (OP_*_TARGET)

   "b" 5 bit base register (OP_*_RS)

   "c" 10 bit breakpoint code (OP_*_CODE)

   "d" 5 bit destination register specifier (OP_*_RD)

   "h" 5 bit prefx hint (OP_*_PREFX)

   "i" 16 bit unsigned immediate (OP_*_IMMEDIATE)

   "j" 16 bit signed immediate (OP_*_DELTA)

   "k" 5 bit cache opcode in target register position (OP_*_CACHE)

   "o" 16 bit signed offset (OP_*_DELTA)

   "p" 16 bit PC relative branch target address (OP_*_DELTA)

   "q" 10 bit extra breakpoint code (OP_*_CODE2)

   "r" 5 bit same register used as both source and target (OP_*_RS)

   "s" 5 bit source register specifier (OP_*_RS)

   "t" 5 bit target register (OP_*_RT)

   "u" 16 bit upper 16 bits of address (OP_*_IMMEDIATE)

   "v" 5 bit same register used as both source and destination (OP_*_RS)

   "w" 5 bit same register used as both target and destination (OP_*_RT)

   "U" 5 bit same destination register in both OP_*_RD and OP_*_RT

       (used by clo and clz)

   "C" 25 bit coprocessor function code (OP_*_COPZ)

   "B" 20 bit syscall/breakpoint function code (OP_*_CODE20)

   "J" 19 bit wait function code (OP_*_CODE19)

   "x" accept and ignore register name

   "z" must be zero register

   Floating point instructions:

   "D" 5 bit destination register (OP_*_FD)

   "M" 3 bit compare condition code (OP_*_CCC) (only used for mips4 and up)

   "N" 3 bit branch condition code (OP_*_BCC) (only used for mips4 and up)

   "S" 5 bit fs source 1 register (OP_*_FS)

   "T" 5 bit ft source 2 register (OP_*_FT)

   "R" 5 bit fr source 3 register (OP_*_FR)

   "V" 5 bit same register used as floating source and destination (OP_*_FS)

   "W" 5 bit same register used as floating target and destination (OP_*_FT)

   Coprocessor instructions:

   "E" 5 bit target register (OP_*_RT)

   "G" 5 bit destination register (OP_*_RD)

   "P" 5 bit performance-monitor register (OP_*_PERFREG)

   "H" 3 bit sel field (OP_*_SEL)

   Macro instructions:

   "A" General 32 bit expression

   "I" 32 bit immediate

   "F" 64 bit floating point constant in .rdata

   "L" 64 bit floating point constant in .lit8

   "f" 32 bit floating point constant

   "l" 32 bit floating point constant in .lit4

   Other:

   "()" parens surrounding optional value

   ","  separates operands

   Characters used so far, for quick reference when adding more:

   "<>(),"

   "ABCDEFGHIJLMNPRSTUVW"

   "abcdfhijklopqrstuvwxz"

*/

/* These are the bits which may be set in the pinfo field of an

   instructions, if it is not equal to INSN_MACRO.  */

/* Modifies the general purpose register in OP_*_RD.  */

#define INSN_WRITE_GPR_D            0x00000001

/* Modifies the general purpose register in OP_*_RT.  */

#define INSN_WRITE_GPR_T            0x00000002

/* Modifies general purpose register 31.  */

#define INSN_WRITE_GPR_31           0x00000004

/* Modifies the floating point register in OP_*_FD.  */

#define INSN_WRITE_FPR_D            0x00000008

/* Modifies the floating point register in OP_*_FS.  */

#define INSN_WRITE_FPR_S            0x00000010

/* Modifies the floating point register in OP_*_FT.  */

#define INSN_WRITE_FPR_T            0x00000020

/* Reads the general purpose register in OP_*_RS.  */

#define INSN_READ_GPR_S             0x00000040

/* Reads the general purpose register in OP_*_RT.  */

#define INSN_READ_GPR_T             0x00000080

/* Reads the floating point register in OP_*_FS.  */

#define INSN_READ_FPR_S             0x00000100

/* Reads the floating point register in OP_*_FT.  */

#define INSN_READ_FPR_T             0x00000200

/* Reads the floating point register in OP_*_FR.  */

#define INSN_READ_FPR_R             0x00000400

/* Modifies coprocessor condition code.  */

#define INSN_WRITE_COND_CODE        0x00000800

/* Reads coprocessor condition code.  */

#define INSN_READ_COND_CODE         0x00001000

/* TLB operation.  */

#define INSN_TLB                    0x00002000

/* Reads coprocessor register other than floating point register.  */

#define INSN_COP                    0x00004000

/* Instruction loads value from memory, requiring delay.  */

#define INSN_LOAD_MEMORY_DELAY      0x00008000

/* Instruction loads value from coprocessor, requiring delay.  */

#define INSN_LOAD_COPROC_DELAY      0x00010000

/* Instruction has unconditional branch delay slot.  */

#define INSN_UNCOND_BRANCH_DELAY    0x00020000

/* Instruction has conditional branch delay slot.  */

#define INSN_COND_BRANCH_DELAY      0x00040000

/* Conditional branch likely: if branch not taken, insn nullified.  */

#define INSN_COND_BRANCH_LIKELY     0x00080000

/* Moves to coprocessor register, requiring delay.  */

#define INSN_COPROC_MOVE_DELAY      0x00100000

/* Loads coprocessor register from memory, requiring delay.  */

#define INSN_COPROC_MEMORY_DELAY    0x00200000

/* Reads the HI register.  */

#define INSN_READ_HI                0x00400000

/* Reads the LO register.  */

#define INSN_READ_LO                0x00800000

/* Modifies the HI register.  */

#define INSN_WRITE_HI               0x01000000

/* Modifies the LO register.  */

#define INSN_WRITE_LO               0x02000000

/* Takes a trap (easier to keep out of delay slot).  */

#define INSN_TRAP                   0x04000000

/* Instruction stores value into memory.  */

#define INSN_STORE_MEMORY           0x08000000

/* Instruction uses single precision floating point.  */

#define FP_S                        0x10000000

/* Instruction uses double precision floating point.  */

#define FP_D                        0x20000000

/* Instruction is part of the tx39's integer multiply family.    */

#define INSN_MULT                   0x40000000

/* Instruction synchronize shared memory.  */

#define INSN_SYNC                   0x80000000

/* Instruction is actually a macro.  It should be ignored by the

   disassembler, and requires special treatment by the assembler.  */

#define INSN_MACRO                  0xffffffff

/* Masks used to mark instructions to indicate which MIPS ISA level

   they were introduced in.  ISAs, as defined below, are logical

   ORs of these bits, indicatingthat they support the instructions

   defined at the given level.  */

#define INSN_ISA_MASK             0x0000ffff

#define INSN_ISA1                 0x00000010

#define INSN_ISA2                 0x00000020

#define INSN_ISA3                 0x00000040

#define INSN_ISA4                 0x00000080

#define INSN_ISA5                 0x00000100

#define INSN_ISA32                0x00000200

#define INSN_ISA64                0x00000400

/* Chip specific instructions.  These are bitmasks.  */

/* MIPS R4650 instruction.  */

#define INSN_4650                 0x00010000

/* LSI R4010 instruction.  */

#define INSN_4010                 0x00020000

/* NEC VR4100 instruction.  */

#define INSN_4100                 0x00040000

/* Toshiba R3900 instruction.  */

#define INSN_3900                 0x00080000

/* 32-bit code running on a ISA3+ CPU.  */

#define INSN_GP32                 0x00100000

/* MIPS ISA defines, use instead of hardcoding ISA level.  */

#define       ISA_UNKNOWN     0               /* Gas internal use.  */

#define       ISA_MIPS1       (INSN_ISA1)

#define       ISA_MIPS2       (ISA_MIPS1 | INSN_ISA2)

#define       ISA_MIPS3       (ISA_MIPS2 | INSN_ISA3)

#define       ISA_MIPS4       (ISA_MIPS3 | INSN_ISA4)

#define       ISA_MIPS5       (ISA_MIPS4 | INSN_ISA5)

#define       ISA_MIPS32      (ISA_MIPS2 | INSN_ISA32)

#define       ISA_MIPS64      (ISA_MIPS5 | INSN_ISA32 | INSN_ISA64)

/* CPU defines, use instead of hardcoding processor number. Keep this

   in sync with bfd/archures.c in order for machine selection to work.  */

#define CPU_UNKNOWN     0               /* Gas internal use.  */

#define CPU_R2000       2000

#define CPU_R3000       3000

#define CPU_R3900       3900

#define CPU_R4000       4000

#define CPU_R4010       4010

#define CPU_VR4100      4100

#define CPU_R4111       4111

#define CPU_R4300       4300

#define CPU_R4400       4400

#define CPU_R4600       4600

#define CPU_R4650       4650

#define CPU_R5000       5000

#define CPU_R6000       6000

#define CPU_R8000       8000

#define CPU_R10000      10000

#define CPU_R12000      12000

#define CPU_MIPS16      16

#define CPU_MIPS32      32

#define CPU_MIPS32_4K   3204113         /* 32, 04, octal 'K'.  */

#define CPU_MIPS5       5

#define CPU_MIPS64      64

#define CPU_SB1         12310201        /* octal 'SB', 01.  */

/* Test for membership in an ISA including chip specific ISAs.

   INSN is pointer to an element of the opcode table; ISA is the

   specified ISA to test against; and CPU is the CPU specific ISA

   to test, or zero if no CPU specific ISA test is desired.

   The gp32 arg is set when you need to force 32-bit register usage on

   a machine with 64-bit registers; see the documentation under -mgp32

   in the MIPS gas docs.  */

#define OPCODE_IS_MEMBER(insn, isa, cpu, gp32)                          \

    ((((insn)->membership & isa) != 0                            \

      && ((insn)->membership & INSN_GP32 ? gp32 : 1)                    \

     )                                                                  \

     || (cpu == CPU_R4650 && ((insn)->membership & INSN_4650) != 0)      \

     || (cpu == CPU_R4010 && ((insn)->membership & INSN_4010) != 0)      \

     || ((cpu == CPU_VR4100 || cpu == CPU_R4111)                        \

         && ((insn)->membership & INSN_4100) != 0)                       \

     || (cpu == CPU_R3900  && ((insn)->membership & INSN_3900) != 0))

/* This is a list of macro expanded instructions.

   _I appended means immediate

   _A appended means address

   _AB appended means address with base register

   _D appended means 64 bit floating point constant

   _S appended means 32 bit floating point constant.  */

enum

{

  M_ABS,

  M_ADD_I,

  M_ADDU_I,

  M_AND_I,

  M_BEQ,

  M_BEQ_I,

  M_BEQL_I,

  M_BGE,

  M_BGEL,

  M_BGE_I,

  M_BGEL_I,

  M_BGEU,

  M_BGEUL,

  M_BGEU_I,

  M_BGEUL_I,

  M_BGT,

  M_BGTL,

  M_BGT_I,

  M_BGTL_I,

  M_BGTU,

  M_BGTUL,

  M_BGTU_I,

  M_BGTUL_I,

  M_BLE,

  M_BLEL,

  M_BLE_I,

  M_BLEL_I,

  M_BLEU,

  M_BLEUL,

  M_BLEU_I,

  M_BLEUL_I,

  M_BLT,

  M_BLTL,

  M_BLT_I,

  M_BLTL_I,

  M_BLTU,

  M_BLTUL,

  M_BLTU_I,

  M_BLTUL_I,

  M_BNE,

  M_BNE_I,

  M_BNEL_I,

  M_DABS,

  M_DADD_I,

  M_DADDU_I,

  M_DDIV_3,

  M_DDIV_3I,

  M_DDIVU_3,

  M_DDIVU_3I,

  M_DIV_3,

  M_DIV_3I,

  M_DIVU_3,

  M_DIVU_3I,

  M_DLA_AB,

  M_DLI,

  M_DMUL,

  M_DMUL_I,

  M_DMULO,

  M_DMULO_I,

  M_DMULOU,

  M_DMULOU_I,

  M_DREM_3,

  M_DREM_3I,

  M_DREMU_3,

  M_DREMU_3I,

  M_DSUB_I,

  M_DSUBU_I,

  M_DSUBU_I_2,

  M_J_A,

  M_JAL_1,

  M_JAL_2,

  M_JAL_A,

  M_L_DOB,

  M_L_DAB,

  M_LA_AB,

  M_LB_A,

  M_LB_AB,

  M_LBU_A,

  M_LBU_AB,

  M_LD_A,

  M_LD_OB,

  M_LD_AB,

  M_LDC1_AB,

  M_LDC2_AB,

  M_LDC3_AB,

  M_LDL_AB,

  M_LDR_AB,

  M_LH_A,

  M_LH_AB,

  M_LHU_A,

  M_LHU_AB,

  M_LI,

  M_LI_D,

  M_LI_DD,

  M_LI_S,

  M_LI_SS,

  M_LL_AB,

  M_LLD_AB,

  M_LS_A,

  M_LW_A,

  M_LW_AB,

  M_LWC0_A,

  M_LWC0_AB,

  M_LWC1_A,

  M_LWC1_AB,

  M_LWC2_A,

  M_LWC2_AB,

  M_LWC3_A,

  M_LWC3_AB,

  M_LWL_A,

  M_LWL_AB,

  M_LWR_A,

  M_LWR_AB,

  M_LWU_AB,

  M_MUL,

  M_MUL_I,

  M_MULO,

  M_MULO_I,

  M_MULOU,

  M_MULOU_I,

  M_NOR_I,

  M_OR_I,

  M_REM_3,

  M_REM_3I,

  M_REMU_3,

  M_REMU_3I,

  M_ROL,

  M_ROL_I,

  M_ROR,

  M_ROR_I,

  M_S_DA,

  M_S_DOB,

  M_S_DAB,

  M_S_S,

  M_SC_AB,

  M_SCD_AB,

  M_SD_A,

  M_SD_OB,

  M_SD_AB,

  M_SDC1_AB,

  M_SDC2_AB,

  M_SDC3_AB,

  M_SDL_AB,

  M_SDR_AB,

  M_SEQ,

  M_SEQ_I,

  M_SGE,

  M_SGE_I,

  M_SGEU,

  M_SGEU_I,

  M_SGT,

  M_SGT_I,

  M_SGTU,

  M_SGTU_I,

  M_SLE,

  M_SLE_I,

  M_SLEU,

  M_SLEU_I,

  M_SLT_I,

  M_SLTU_I,

  M_SNE,

  M_SNE_I,

  M_SB_A,

  M_SB_AB,

  M_SH_A,

  M_SH_AB,

  M_SW_A,

  M_SW_AB,

  M_SWC0_A,

  M_SWC0_AB,

  M_SWC1_A,

  M_SWC1_AB,

  M_SWC2_A,

  M_SWC2_AB,

  M_SWC3_A,

  M_SWC3_AB,

  M_SWL_A,

  M_SWL_AB,

  M_SWR_A,

  M_SWR_AB,

  M_SUB_I,

  M_SUBU_I,

  M_SUBU_I_2,

  M_TEQ_I,

  M_TGE_I,

  M_TGEU_I,

  M_TLT_I,

  M_TLTU_I,

  M_TNE_I,

  M_TRUNCWD,

  M_TRUNCWS,

  M_ULD,

  M_ULD_A,

  M_ULH,

  M_ULH_A,

  M_ULHU,

  M_ULHU_A,

  M_ULW,

  M_ULW_A,

  M_USH,

  M_USH_A,

  M_USW,

  M_USW_A,

  M_USD,

  M_USD_A,

  M_XOR_I,

  M_COP0,

  M_COP1,

  M_COP2,

  M_COP3,

  M_NUM_MACROS

};

/* The order of overloaded instructions matters.  Label arguments and

   register arguments look the same. Instructions that can have either

   for arguments must apear in the correct order in this table for the

   assembler to pick the right one. In other words, entries with

   immediate operands must apear after the same instruction with

   registers.

   Many instructions are short hand for other instructions (i.e., The

   jal <register> instruction is short for jalr <register>).  */

extern const struct mips_opcode mips_builtin_opcodes[];

extern const int bfd_mips_num_builtin_opcodes;

extern struct mips_opcode *mips_opcodes;

extern int bfd_mips_num_opcodes;

#define NUMOPCODES bfd_mips_num_opcodes

/* The rest of this file adds definitions for the mips16 TinyRISC

   processor.  */

/* These are the bitmasks and shift counts used for the different

   fields in the instruction formats.  Other than OP, no masks are

   provided for the fixed portions of an instruction, since they are

   not needed.

   The I format uses IMM11.

   The RI format uses RX and IMM8.

   The RR format uses RX, and RY.

   The RRI format uses RX, RY, and IMM5.

   The RRR format uses RX, RY, and RZ.

   The RRI_A format uses RX, RY, and IMM4.

   The SHIFT format uses RX, RY, and SHAMT.

   The I8 format uses IMM8.

   The I8_MOVR32 format uses RY and REGR32.

   The IR_MOV32R format uses REG32R and MOV32Z.

   The I64 format uses IMM8.

   The RI64 format uses RY and IMM5.

   */

#define MIPS16OP_MASK_OP        0x1f

#define MIPS16OP_SH_OP          11

#define MIPS16OP_MASK_IMM11     0x7ff

#define MIPS16OP_SH_IMM11       0

#define MIPS16OP_MASK_RX        0x7

#define MIPS16OP_SH_RX          8

#define MIPS16OP_MASK_IMM8      0xff

#define MIPS16OP_SH_IMM8        0

#define MIPS16OP_MASK_RY        0x7

#define MIPS16OP_SH_RY          5

#define MIPS16OP_MASK_IMM5      0x1f

#define MIPS16OP_SH_IMM5        0

#define MIPS16OP_MASK_RZ        0x7

#define MIPS16OP_SH_RZ          2

#define MIPS16OP_MASK_IMM4      0xf

#define MIPS16OP_SH_IMM4        0

#define MIPS16OP_MASK_REGR32    0x1f

#define MIPS16OP_SH_REGR32      0

#define MIPS16OP_MASK_REG32R    0x1f

#define MIPS16OP_SH_REG32R      3

#define MIPS16OP_EXTRACT_REG32R(i) ((((i) >> 5) & 7) | ((i) & 0x18))

#define MIPS16OP_MASK_MOVE32Z   0x7

#define MIPS16OP_SH_MOVE32Z     0

#define MIPS16OP_MASK_IMM6      0x3f

#define MIPS16OP_SH_IMM6        5

/* These are the characters which may appears in the args field of an

   instruction.  They appear in the order in which the fields appear

   when the instruction is used.  Commas and parentheses in the args

   string are ignored when assembling, and written into the output

   when disassembling.

   "y" 3 bit register (MIPS16OP_*_RY)

   "x" 3 bit register (MIPS16OP_*_RX)

   "z" 3 bit register (MIPS16OP_*_RZ)

   "Z" 3 bit register (MIPS16OP_*_MOVE32Z)

   "v" 3 bit same register as source and destination (MIPS16OP_*_RX)

   "w" 3 bit same register as source and destination (MIPS16OP_*_RY)

   "0" zero register ($0)

   "S" stack pointer ($sp or $29)

   "P" program counter

   "R" return address register ($ra or $31)

   "X" 5 bit MIPS register (MIPS16OP_*_REGR32)

   "Y" 5 bit MIPS register (MIPS16OP_*_REG32R)

   "6" 6 bit unsigned break code (MIPS16OP_*_IMM6)

   "a" 26 bit jump address

   "e" 11 bit extension value

   "l" register list for entry instruction

   "L" register list for exit instruction

   The remaining codes may be extended.  Except as otherwise noted,

   the full extended operand is a 16 bit signed value.

   "<" 3 bit unsigned shift count * 0 (MIPS16OP_*_RZ) (full 5 bit unsigned)

   ">" 3 bit unsigned shift count * 0 (MIPS16OP_*_RX) (full 5 bit unsigned)

   "[" 3 bit unsigned shift count * 0 (MIPS16OP_*_RZ) (full 6 bit unsigned)

   "]" 3 bit unsigned shift count * 0 (MIPS16OP_*_RX) (full 6 bit unsigned)

   "4" 4 bit signed immediate * 0 (MIPS16OP_*_IMM4) (full 15 bit signed)

   "5" 5 bit unsigned immediate * 0 (MIPS16OP_*_IMM5)

   "H" 5 bit unsigned immediate * 2 (MIPS16OP_*_IMM5)

   "W" 5 bit unsigned immediate * 4 (MIPS16OP_*_IMM5)

   "D" 5 bit unsigned immediate * 8 (MIPS16OP_*_IMM5)

   "j" 5 bit signed immediate * 0 (MIPS16OP_*_IMM5)

   "8" 8 bit unsigned immediate * 0 (MIPS16OP_*_IMM8)

   "V" 8 bit unsigned immediate * 4 (MIPS16OP_*_IMM8)

   "C" 8 bit unsigned immediate * 8 (MIPS16OP_*_IMM8)

   "U" 8 bit unsigned immediate * 0 (MIPS16OP_*_IMM8) (full 16 bit unsigned)

   "k" 8 bit signed immediate * 0 (MIPS16OP_*_IMM8)

   "K" 8 bit signed immediate * 8 (MIPS16OP_*_IMM8)

   "p" 8 bit conditional branch address (MIPS16OP_*_IMM8)

   "q" 11 bit branch address (MIPS16OP_*_IMM11)

   "A" 8 bit PC relative address * 4 (MIPS16OP_*_IMM8)

   "B" 5 bit PC relative address * 8 (MIPS16OP_*_IMM5)

   "E" 5 bit PC relative address * 4 (MIPS16OP_*_IMM5)

   */

/* For the mips16, we use the same opcode table format and a few of

   the same flags.  However, most of the flags are different.  */

/* Modifies the register in MIPS16OP_*_RX.  */

#define MIPS16_INSN_WRITE_X                 0x00000001

/* Modifies the register in MIPS16OP_*_RY.  */

#define MIPS16_INSN_WRITE_Y                 0x00000002

/* Modifies the register in MIPS16OP_*_RZ.  */

#define MIPS16_INSN_WRITE_Z                 0x00000004

/* Modifies the T ($24) register.  */

#define MIPS16_INSN_WRITE_T                 0x00000008

/* Modifies the SP ($29) register.  */

#define MIPS16_INSN_WRITE_SP                0x00000010

/* Modifies the RA ($31) register.  */

#define MIPS16_INSN_WRITE_31                0x00000020

/* Modifies the general purpose register in MIPS16OP_*_REG32R.  */

#define MIPS16_INSN_WRITE_GPR_Y             0x00000040

/* Reads the register in MIPS16OP_*_RX.  */

#define MIPS16_INSN_READ_X                  0x00000080

/* Reads the register in MIPS16OP_*_RY.  */

#define MIPS16_INSN_READ_Y                  0x00000100

/* Reads the register in MIPS16OP_*_MOVE32Z.  */

#define MIPS16_INSN_READ_Z                  0x00000200

/* Reads the T ($24) register.  */

#define MIPS16_INSN_READ_T                  0x00000400

/* Reads the SP ($29) register.  */

#define MIPS16_INSN_READ_SP                 0x00000800

/* Reads the RA ($31) register.  */

#define MIPS16_INSN_READ_31                 0x00001000

/* Reads the program counter.  */

#define MIPS16_INSN_READ_PC                 0x00002000

/* Reads the general purpose register in MIPS16OP_*_REGR32.  */

#define MIPS16_INSN_READ_GPR_X              0x00004000

/* Is a branch insn. */

#define MIPS16_INSN_BRANCH                  0x00010000

/* The following flags have the same value for the mips16 opcode

   table:

   INSN_UNCOND_BRANCH_DELAY

   INSN_COND_BRANCH_DELAY

   INSN_COND_BRANCH_LIKELY (never used)

   INSN_READ_HI

   INSN_READ_LO

   INSN_WRITE_HI

   INSN_WRITE_LO

   INSN_TRAP

   INSN_ISA3

   */

extern const struct mips_opcode mips16_opcodes[];

extern const int bfd_mips16_num_opcodes;

#endif /* _MIPS_H_ */