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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.1/] [include/] [opcode/] [or32.h] - Blame information for rev 227

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1 227 jeremybenn
/* Table of opcodes for the OpenRISC 1000 ISA.
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   Copyright 2002, 2003 Free Software Foundation, Inc.
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   Contributed by Damjan Lampret (lampret@opencores.org).
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   This file is part of or1k_gen_isa, or1ksim, GDB and GAS.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 2 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   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 program; if not, write to the Free Software
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   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
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/* We treat all letters the same in encode/decode routines so
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   we need to assign some characteristics to them like signess etc.  */
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#ifndef OR32_H_ISA
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#define OR32_H_ISA
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#define NUM_UNSIGNED (0)
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#define NUM_SIGNED (1)
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#define MAX_GPRS 32
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#define PAGE_SIZE 4096
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#undef __HALF_WORD_INSN__
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#define OPERAND_DELIM (',')
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#define OR32_IF_DELAY (1)
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#define OR32_W_FLAG   (2)
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#define OR32_R_FLAG   (4)
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struct or32_letter
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{
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  char letter;
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  int  sign;
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  /* int  reloc; relocation per letter ??  */
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};
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/* Main instruction specification array.  */
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struct or32_opcode
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{
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  /* Name of the instruction.  */
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  char *name;
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  /* A string of characters which describe the operands.
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     Valid characters are:
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     ,() Itself.  Characters appears in the assembly code.
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     rA  Register operand.
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     rB  Register operand.
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     rD  Register operand.
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     I   An immediate operand, range -32768 to 32767.
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     J   An immediate operand, range . (unused)
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     K   An immediate operand, range 0 to 65535.
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     L   An immediate operand, range 0 to 63.
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     M   An immediate operand, range . (unused)
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     N   An immediate operand, range -33554432 to 33554431.
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     O   An immediate operand, range . (unused).  */
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  char *args;
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  /* Opcode and operand encoding.  */
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  char *encoding;
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  void (*exec) (void);
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  unsigned int flags;
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};
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#define OPTYPE_LAST (0x80000000)
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#define OPTYPE_OP   (0x40000000)
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#define OPTYPE_REG  (0x20000000)
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#define OPTYPE_SIG  (0x10000000)
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#define OPTYPE_DIS  (0x08000000)
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#define OPTYPE_DST  (0x04000000)
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#define OPTYPE_SBIT (0x00001F00)
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#define OPTYPE_SHR  (0x0000001F)
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#define OPTYPE_SBIT_SHR (8)
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/* MM: Data how to decode operands.  */
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extern struct insn_op_struct
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{
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  unsigned long type;
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  unsigned long data;
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} **op_start;
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#ifdef HAS_EXECUTION
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extern void l_invalid (void);
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extern void l_sfne    (void);
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extern void l_bf      (void);
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extern void l_add     (void);
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extern void l_sw      (void);
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extern void l_sb      (void);
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extern void l_sh      (void);
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extern void l_lwz     (void);
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extern void l_lbs     (void);
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extern void l_lbz     (void);
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extern void l_lhs     (void);
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extern void l_lhz     (void);
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extern void l_movhi   (void);
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extern void l_and     (void);
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extern void l_or      (void);
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extern void l_xor     (void);
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extern void l_sub     (void);
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extern void l_mul     (void);
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extern void l_div     (void);
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extern void l_divu    (void);
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extern void l_sll     (void);
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extern void l_sra     (void);
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extern void l_srl     (void);
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extern void l_j       (void);
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extern void l_jal     (void);
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extern void l_jalr    (void);
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extern void l_jr      (void);
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extern void l_rfe     (void);
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extern void l_nop     (void);
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extern void l_bnf     (void);
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extern void l_sfeq    (void);
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extern void l_sfgts   (void);
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extern void l_sfges   (void);
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extern void l_sflts   (void);
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extern void l_sfles   (void);
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extern void l_sfgtu   (void);
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extern void l_sfgeu   (void);
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extern void l_sfltu   (void);
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extern void l_sfleu   (void);
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extern void l_mtspr   (void);
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extern void l_mfspr   (void);
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extern void l_sys     (void);
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extern void l_trap    (void); /* CZ 21/06/01.  */
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extern void l_macrc   (void);
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extern void l_mac     (void);
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extern void l_msb     (void);
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extern void l_invalid (void);
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extern void l_cust1   (void);
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extern void l_cust2   (void);
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extern void l_cust3   (void);
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extern void l_cust4   (void);
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#endif
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extern void l_none    (void);
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extern const struct or32_letter or32_letters[];
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extern const struct  or32_opcode or32_opcodes[];
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extern const unsigned int or32_num_opcodes;
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/* Calculates instruction length in bytes.  Always 4 for OR32.  */
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extern int insn_len (int);
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/* Is individual insn's operand signed or unsigned?  */
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extern int letter_signed (char);
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/* Number of letters in the individual lettered operand.  */
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extern int letter_range (char);
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/* MM: Returns index of given instruction name.  */
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extern int insn_index (char *);
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/* MM: Returns instruction name from index.  */
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extern const char *insn_name (int);
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/* MM: Constructs new FSM, based on or32_opcodes.  */
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extern void build_automata (void);
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/* MM: Destructs FSM.  */
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extern void destruct_automata (void);
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/* MM: Decodes instruction using FSM.  Call build_automata first.  */
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extern int insn_decode (unsigned int);
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/* Disassemble one instruction from insn to disassemble.
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   Return the size of the instruction.  */
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int disassemble_insn (unsigned long);
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#endif

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