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Diffstat (limited to 'include/opcode/or32.h')
| -rw-r--r-- | include/opcode/or32.h | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/include/opcode/or32.h b/include/opcode/or32.h new file mode 100644 index 000000000..05c532667 --- /dev/null +++ b/include/opcode/or32.h @@ -0,0 +1,188 @@ +/* Table of opcodes for the OpenRISC 1000 ISA. + Copyright 2002 Free Software Foundation, Inc. + Contributed by Damjan Lampret (lampret@opencores.org). + + This file is part of or1k_gen_isa, or1ksim, GDB and GAS. + + 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 + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it 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 program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* We treat all letters the same in encode/decode routines so + we need to assign some characteristics to them like signess etc. */ + +#ifndef OR32_H_ISA +#define OR32_H_ISA + +#define NUM_UNSIGNED (0) +#define NUM_SIGNED (1) + +#ifndef PARAMS +#define PARAMS(x) x +#endif + +#ifndef CONST +#define CONST const +#endif + +#define MAX_GPRS 32 +#define PAGE_SIZE 4096 +#undef __HALF_WORD_INSN__ + +#define OPERAND_DELIM (',') + +#define OR32_IF_DELAY (1) +#define OR32_W_FLAG (2) +#define OR32_R_FLAG (4) + +struct or32_letter +{ + char letter; + int sign; + /* int reloc; relocation per letter ?? */ +}; + +/* Main instruction specification array. */ +struct or32_opcode +{ + /* Name of the instruction. */ + char *name; + + /* A string of characters which describe the operands. + Valid characters are: + ,() Itself. Characters appears in the assembly code. + rA Register operand. + rB Register operand. + rD Register operand. + I An immediate operand, range -32768 to 32767. + J An immediate operand, range . (unused) + K An immediate operand, range 0 to 65535. + L An immediate operand, range 0 to 63. + M An immediate operand, range . (unused) + N An immediate operand, range -33554432 to 33554431. + O An immediate operand, range . (unused). */ + char *args; + + /* Opcode and operand encoding. */ + char *encoding; + void (*exec) PARAMS ((void)); + unsigned int flags; +}; + +#define OPTYPE_LAST (0x80000000) +#define OPTYPE_OP (0x40000000) +#define OPTYPE_REG (0x20000000) +#define OPTYPE_SIG (0x10000000) +#define OPTYPE_DIS (0x08000000) +#define OPTYPE_DST (0x04000000) +#define OPTYPE_SBIT (0x00001F00) +#define OPTYPE_SHR (0x0000001F) +#define OPTYPE_SBIT_SHR (8) + +/* MM: Data how to decode operands. */ +extern struct insn_op_struct +{ + unsigned long type; + unsigned long data; +} **op_start; + +#ifdef HAS_EXECUTION +extern void l_invalid PARAMS ((void)); +extern void l_sfne PARAMS ((void)); +extern void l_bf PARAMS ((void)); +extern void l_add PARAMS ((void)); +extern void l_sw PARAMS ((void)); +extern void l_sb PARAMS ((void)); +extern void l_sh PARAMS ((void)); +extern void l_lwz PARAMS ((void)); +extern void l_lbs PARAMS ((void)); +extern void l_lbz PARAMS ((void)); +extern void l_lhs PARAMS ((void)); +extern void l_lhz PARAMS ((void)); +extern void l_movhi PARAMS ((void)); +extern void l_and PARAMS ((void)); +extern void l_or PARAMS ((void)); +extern void l_xor PARAMS ((void)); +extern void l_sub PARAMS ((void)); +extern void l_mul PARAMS ((void)); +extern void l_div PARAMS ((void)); +extern void l_divu PARAMS ((void)); +extern void l_sll PARAMS ((void)); +extern void l_sra PARAMS ((void)); +extern void l_srl PARAMS ((void)); +extern void l_j PARAMS ((void)); +extern void l_jal PARAMS ((void)); +extern void l_jalr PARAMS ((void)); +extern void l_jr PARAMS ((void)); +extern void l_rfe PARAMS ((void)); +extern void l_nop PARAMS ((void)); +extern void l_bnf PARAMS ((void)); +extern void l_sfeq PARAMS ((void)); +extern void l_sfgts PARAMS ((void)); +extern void l_sfges PARAMS ((void)); +extern void l_sflts PARAMS ((void)); +extern void l_sfles PARAMS ((void)); +extern void l_sfgtu PARAMS ((void)); +extern void l_sfgeu PARAMS ((void)); +extern void l_sfltu PARAMS ((void)); +extern void l_sfleu PARAMS ((void)); +extern void l_mtspr PARAMS ((void)); +extern void l_mfspr PARAMS ((void)); +extern void l_sys PARAMS ((void)); +extern void l_trap PARAMS ((void)); /* CZ 21/06/01. */ +extern void l_macrc PARAMS ((void)); +extern void l_mac PARAMS ((void)); +extern void l_msb PARAMS ((void)); +extern void l_invalid PARAMS ((void)); +extern void l_cust1 PARAMS ((void)); +extern void l_cust2 PARAMS ((void)); +extern void l_cust3 PARAMS ((void)); +extern void l_cust4 PARAMS ((void)); +#endif +extern void l_none PARAMS ((void)); + +extern const struct or32_letter or32_letters[]; + +extern const struct or32_opcode or32_opcodes[]; + +extern const unsigned int or32_num_opcodes; + +/* Calculates instruction length in bytes. Always 4 for OR32. */ +extern int insn_len PARAMS ((int)); + +/* Is individual insn's operand signed or unsigned? */ +extern int letter_signed PARAMS ((char)); + +/* Number of letters in the individual lettered operand. */ +extern int letter_range PARAMS ((char)); + +/* MM: Returns index of given instruction name. */ +extern int insn_index PARAMS ((char *)); + +/* MM: Returns instruction name from index. */ +extern const char *insn_name PARAMS ((int)); + +/* MM: Constructs new FSM, based on or32_opcodes. */ +extern void build_automata PARAMS ((void)); + +/* MM: Destructs FSM. */ +extern void destruct_automata PARAMS ((void)); + +/* MM: Decodes instruction using FSM. Call build_automata first. */ +extern int insn_decode PARAMS ((unsigned int)); + +/* Disassemble one instruction from insn to disassemble. + Return the size of the instruction. */ +int disassemble_insn PARAMS ((unsigned long)); + +#endif |