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[/] [or1k/] [branches/] [stable_0_2_x/] [insight/] [include/] [opcode/] [or32.h] - Blame information for rev 1341

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1 133 markom
/* Table of opcodes for the OpenRISC 1000 ISA.
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   Copyright 1990, 1991, 1992, 1993 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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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#ifndef PARAMS
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#define PARAMS(x) x
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#endif
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#ifndef CONST
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#define CONST const
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#endif
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#define MAX_GPRS 32
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#define PAGE_SIZE 8192
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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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  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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  /* 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 (destination).
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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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#if defined(HAS_EXECUTION) && !SIMPLE_EXECUTION
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  char *function_name;
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#else /* defined HAS_EXECUTION && !SIMPLE_EXECUTION */
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  void (*exec)();
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#endif /* defined HAS_EXECUTION && !SIMPLE_EXECUTION */
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  unsigned int flags;
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};
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/* This operand is the last in the list */
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#define OPTYPE_LAST (0x80000000)
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/* This operand marks the end of the operand sequence (for things like I(rD)) */
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#define OPTYPE_OP   (0x40000000)
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/* The operand specifies a register index */
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#define OPTYPE_REG  (0x20000000)
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/* The operand must be sign extended */
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#define OPTYPE_SIG  (0x10000000)
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/* Operand is a relative address, the `I' in `I(rD)' */
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#define OPTYPE_DIS  (0x08000000)
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/* The operand is a destination */
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#define OPTYPE_DST  (0x04000000)
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/* Which bit of the operand is the sign bit */
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#define OPTYPE_SBIT (0x00001F00)
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/* Amount to shift the instruction word right to get the operand */
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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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  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 PARAMS((void));
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extern void l_sfne PARAMS((void));
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extern void l_bf PARAMS((void));
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extern void l_add PARAMS((void));
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extern void l_addc PARAMS((void));
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extern void l_sw PARAMS((void));
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extern void l_sb PARAMS((void));
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extern void l_sh PARAMS((void));
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extern void l_lwz PARAMS((void));
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extern void l_lbs PARAMS((void));
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extern void l_lbz PARAMS((void));
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extern void l_lhs PARAMS((void));
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extern void l_lhz PARAMS((void));
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extern void l_movhi PARAMS((void));
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extern void l_and PARAMS((void));
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extern void l_or PARAMS((void));
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extern void l_xor PARAMS((void));
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extern void l_sub PARAMS((void));
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extern void l_mul PARAMS((void));
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extern void l_div PARAMS((void));
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extern void l_divu PARAMS((void));
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extern void l_sll PARAMS((void));
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extern void l_sra PARAMS((void));
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extern void l_srl PARAMS((void));
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extern void l_j PARAMS((void));
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extern void l_jal PARAMS((void));
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extern void l_jalr PARAMS((void));
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extern void l_jr PARAMS((void));
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extern void l_rfe PARAMS((void));
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extern void l_nop PARAMS((void));
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extern void l_bnf PARAMS((void));
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extern void l_sfeq PARAMS((void));
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extern void l_sfgts PARAMS((void));
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extern void l_sfges PARAMS((void));
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extern void l_sflts PARAMS((void));
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extern void l_sfles PARAMS((void));
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extern void l_sfgtu PARAMS((void));
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extern void l_sfgeu PARAMS((void));
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extern void l_sfltu PARAMS((void));
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extern void l_sfleu PARAMS((void));
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extern void l_extbs PARAMS((void));
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extern void l_extbz PARAMS((void));
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extern void l_exths PARAMS((void));
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extern void l_exthz PARAMS((void));
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extern void l_extws PARAMS((void));
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extern void l_extwz PARAMS((void));
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extern void l_mtspr PARAMS((void));
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extern void l_mfspr PARAMS((void));
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extern void l_sys PARAMS((void));
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extern void l_trap PARAMS((void)); /* CZ 21/06/01 */
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extern void l_macrc PARAMS((void));
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extern void l_mac PARAMS((void));
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extern void l_msb PARAMS((void));
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extern void l_invalid PARAMS((void));
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extern void l_cmov PARAMS ((void));
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extern void l_ff1 PARAMS ((void));
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extern void l_cust1 PARAMS ((void));
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extern void l_cust2 PARAMS ((void));
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extern void l_cust3 PARAMS ((void));
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extern void l_cust4 PARAMS ((void));
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extern void lf_add_s PARAMS ((void));
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extern void lf_div_s PARAMS ((void));
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extern void lf_ftoi_s PARAMS ((void));
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extern void lf_itof_s PARAMS ((void));
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extern void lf_madd_s PARAMS ((void));
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extern void lf_mul_s PARAMS ((void));
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extern void lf_rem_s PARAMS ((void));
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extern void lf_sfeq_s PARAMS ((void));
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extern void lf_sfge_s PARAMS ((void));
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extern void lf_sfgt_s PARAMS ((void));
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extern void lf_sfle_s PARAMS ((void));
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extern void lf_sflt_s PARAMS ((void));
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extern void lf_sfne_s PARAMS ((void));
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extern void lf_sub_s PARAMS((void));
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#endif
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extern void l_none PARAMS((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 int num_opcodes;
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/* Calculates instruction length in bytes.  Always 4 for OR32. */
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extern int insn_len PARAMS((int insn_index));
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/* Is individual insn's operand signed or unsigned? */
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extern int letter_signed PARAMS((char l));
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/* Number of letters in the individual lettered operand. */
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extern int letter_range PARAMS((char l));
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/* MM: Returns index of given instruction name.  */
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extern int insn_index PARAMS((char *insn));
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/* MM: Returns instruction name from index.  */
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extern CONST char *insn_name PARAMS ((int index));
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/* MM: Constructs new FSM, based on or32_opcodes.  */
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extern void build_automata PARAMS ((void));
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/* MM: Destructs FSM.  */
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extern void destruct_automata PARAMS ((void));
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/* MM: Decodes instruction using FSM.  Call build_automata first.  */
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extern int insn_decode PARAMS((unsigned int insn));
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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 insn);
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/* Disassemble one instruction from insn index.
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   Return the size of the instruction.  */
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int disassemble_index (unsigned long insn, int index);
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/* FOR INTERNAL USE ONLY */
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/* Automatically does zero- or sign- extension and also finds correct
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   sign bit position if sign extension is correct extension. Which extension
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   is proper is figured out from letter description. */
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unsigned long extend_imm(unsigned long imm, char l);
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/* Extracts value from opcode */
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unsigned long or32_extract(char param_ch, char *enc_initial, unsigned long insn);
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#endif
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