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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [include/] [opcode/] [d10v.h] - Blame information for rev 225

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1 24 jeremybenn
/* d10v.h -- Header file for D10V opcode table
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   Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2003
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   Free Software Foundation, Inc.
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   Written by Martin Hunt (hunt@cygnus.com), Cygnus Support
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This file is part of GDB, GAS, and the GNU binutils.
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GDB, GAS, and the GNU binutils are free software; you can redistribute
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them and/or modify them under the terms of the GNU General Public
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License as published by the Free Software Foundation; either version
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1, or (at your option) any later version.
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GDB, GAS, and the GNU binutils are distributed in the hope that they
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will be useful, but WITHOUT ANY WARRANTY; without even the implied
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warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
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the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this file; see the file COPYING.  If not, write to the Free
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Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
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#ifndef D10V_H
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#define D10V_H
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/* Format Specifier */
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#define FM00    0
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#define FM01    0x40000000
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#define FM10    0x80000000
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#define FM11    0xC0000000
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#define NOP 0x5e00
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#define OPCODE_DIVS     0x14002800
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/* The opcode table is an array of struct d10v_opcode.  */
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struct d10v_opcode
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{
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  /* The opcode name.  */
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  const char *name;
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  /* the opcode format */
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  int format;
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  /* These numbers were picked so we can do if( i & SHORT_OPCODE) */
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#define SHORT_OPCODE 1
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#define LONG_OPCODE  8
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#define SHORT_2      1          /* short with 2 operands */
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#define SHORT_B      3          /* short with 8-bit branch */
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#define LONG_B       8          /* long with 16-bit branch */
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#define LONG_L       10         /* long with 3 operands */
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#define LONG_R       12         /* reserved */
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  /* just a placeholder for variable-length instructions */
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  /* for example, "bra" will be a fake for "bra.s" and bra.l" */
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  /* which will immediately follow in the opcode table.  */
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#define OPCODE_FAKE  32
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  /* the number of cycles */
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  int cycles;
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  /* the execution unit(s) used */
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  int unit;
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#define EITHER  0
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#define IU      1
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#define MU      2
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#define BOTH    3
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  /* execution type; parallel or sequential */
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  /* this field is used to decide if two instructions */
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  /* can be executed in parallel */
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  int exec_type;
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#define PARONLY 1       /* parallel only */
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#define SEQ     2       /* must be sequential */
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#define PAR     4       /* may be parallel */
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#define BRANCH_LINK 8   /* subroutine call.  must be aligned */
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#define RMEM     16     /* reads memory */
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#define WMEM     32     /* writes memory */
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#define RF0      64     /* reads f0 */
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#define WF0     128     /* modifies f0 */
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#define WCAR    256     /* write Carry */
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#define BRANCH  512     /* branch, no link */
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#define ALONE  1024     /* short but pack with a NOP if on asm line alone */
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  /* the opcode */
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  long opcode;
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  /* mask.  if( (i & mask) == opcode ) then match */
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  long mask;
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  /* An array of operand codes.  Each code is an index into the
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     operand table.  They appear in the order which the operands must
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     appear in assembly code, and are terminated by a zero.  */
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  unsigned char operands[6];
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};
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/* The table itself is sorted by major opcode number, and is otherwise
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   in the order in which the disassembler should consider
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   instructions.  */
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extern const struct d10v_opcode d10v_opcodes[];
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extern const int d10v_num_opcodes;
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/* The operands table is an array of struct d10v_operand.  */
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struct d10v_operand
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{
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  /* The number of bits in the operand.  */
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  int bits;
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  /* How far the operand is left shifted in the instruction.  */
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  int shift;
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  /* One bit syntax flags.  */
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  int flags;
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};
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/* Elements in the table are retrieved by indexing with values from
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   the operands field of the d10v_opcodes table.  */
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extern const struct d10v_operand d10v_operands[];
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/* Values defined for the flags field of a struct d10v_operand.  */
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/* the operand must be an even number */
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#define OPERAND_EVEN    (1)
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/* the operand must be an odd number */
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#define OPERAND_ODD     (2)     
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/* this is the destination register; it will be modified */
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/* this is used by the optimizer */
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#define OPERAND_DEST    (4)
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/* number or symbol */
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#define OPERAND_NUM     (8)
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/* address or label */
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#define OPERAND_ADDR    (0x10)
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/* register */
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#define OPERAND_REG     (0x20)
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/* postincrement +  */
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#define OPERAND_PLUS    (0x40)
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/* postdecrement -  */
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#define OPERAND_MINUS   (0x80)
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/* @  */
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#define OPERAND_ATSIGN  (0x100)
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/* @(  */
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#define OPERAND_ATPAR   (0x200)
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/* accumulator 0 */
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#define OPERAND_ACC0    (0x400)
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/* accumulator 1 */
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#define OPERAND_ACC1    (0x800)
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/* f0 / f1 flag register */
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#define OPERAND_FFLAG   (0x1000)
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/* c flag register */
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#define OPERAND_CFLAG   (0x2000)
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/* control register  */
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#define OPERAND_CONTROL (0x4000)
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/* predecrement mode '@-sp'  */
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#define OPERAND_ATMINUS (0x8000)
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/* signed number */
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#define OPERAND_SIGNED  (0x10000)
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/* special accumulator shifts need a 4-bit number */
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/* 1 <= x <= 16 */
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#define OPERAND_SHIFT   (0x20000)
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/* general purpose register */
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#define OPERAND_GPR     (0x40000)
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/* special imm3 values with range restricted to -2 <= imm3 <= 3 */
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/* needed for rac/rachi */
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#define RESTRICTED_NUM3 (0x80000)
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/* Pre-decrement is only supported for SP.  */
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#define OPERAND_SP      (0x100000)
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/* Post-decrement is not supported for SP.  Like OPERAND_EVEN, and
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   unlike OPERAND_SP, this flag doesn't prevent the instruction from
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   matching, it only fails validation later on.  */
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#define OPERAND_NOSP    (0x200000)
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/* Structure to hold information about predefined registers.  */
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struct pd_reg
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{
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  char *name;           /* name to recognize */
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  char *pname;          /* name to print for this register */
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  int value;
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};
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extern const struct pd_reg d10v_predefined_registers[];
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int d10v_reg_name_cnt (void);
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/* an expressionS only has one register type, so we fake it */
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/* by setting high bits to indicate type */
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#define REGISTER_MASK   0xFF
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#endif /* D10V_H */

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