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Diffstat (limited to 'include/opcode/d10v.h')
| -rw-r--r-- | include/opcode/d10v.h | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/include/opcode/d10v.h b/include/opcode/d10v.h new file mode 100644 index 0000000..4b74c98 --- /dev/null +++ b/include/opcode/d10v.h @@ -0,0 +1,194 @@ +/* d10v.h -- Header file for D10V opcode table + Copyright 1996, 1997, 1998 Free Software Foundation, Inc. + Written by Martin Hunt (hunt@cygnus.com), 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 D10V_H +#define D10V_H + +/* Format Specifier */ +#define FM00 0 +#define FM01 0x40000000 +#define FM10 0x80000000 +#define FM11 0xC0000000 + +#define NOP 0x5e00 +#define OPCODE_DIVS 0x14002800 + +/* The opcode table is an array of struct d10v_opcode. */ + +struct d10v_opcode +{ + /* The opcode name. */ + const char *name; + + /* the opcode format */ + int format; + + /* These numbers were picked so we can do if( i & SHORT_OPCODE) */ +#define SHORT_OPCODE 1 +#define LONG_OPCODE 8 +#define SHORT_2 1 /* short with 2 operands */ +#define SHORT_B 3 /* short with 8-bit branch */ +#define LONG_B 8 /* long with 16-bit branch */ +#define LONG_L 10 /* long with 3 operands */ +#define LONG_R 12 /* reserved */ + + /* just a placeholder for variable-length instructions */ + /* for example, "bra" will be a fake for "bra.s" and bra.l" */ + /* which will immediately follow in the opcode table. */ +#define OPCODE_FAKE 32 + + /* the number of cycles */ + int cycles; + + /* the execution unit(s) used */ + int unit; +#define EITHER 0 +#define IU 1 +#define MU 2 +#define BOTH 3 + + /* execution type; parallel or sequential */ + /* this field is used to decide if two instructions */ + /* can be executed in parallel */ + int exec_type; +#define PARONLY 1 /* parallel only */ +#define SEQ 2 /* must be sequential */ +#define PAR 4 /* may be parallel */ +#define BRANCH_LINK 8 /* subroutine call. must be aligned */ +#define RMEM 16 /* reads memory */ +#define WMEM 32 /* writes memory */ +#define RF0 64 /* reads f0 */ +#define WF0 128 /* modifies f0 */ +#define WCAR 256 /* write Carry */ +#define BRANCH 512 /* branch, no link */ + + /* the opcode */ + long opcode; + + /* mask. if( (i & mask) == opcode ) then match */ + long mask; + + /* An array of operand codes. Each code is an index into the + operand table. They appear in the order which the operands must + appear in assembly code, and are terminated by a zero. */ + unsigned char operands[6]; +}; + +/* The table itself is sorted by major opcode number, and is otherwise + in the order in which the disassembler should consider + instructions. */ +extern const struct d10v_opcode d10v_opcodes[]; +extern const int d10v_num_opcodes; + +/* The operands table is an array of struct d10v_operand. */ +struct d10v_operand +{ + /* The number of bits in the operand. */ + int bits; + + /* How far the operand is left shifted in the instruction. */ + int shift; + + /* One bit syntax flags. */ + int flags; +}; + +/* Elements in the table are retrieved by indexing with values from + the operands field of the d10v_opcodes table. */ + +extern const struct d10v_operand d10v_operands[]; + +/* Values defined for the flags field of a struct d10v_operand. */ + +/* the operand must be an even number */ +#define OPERAND_EVEN (1) + +/* the operand must be an odd number */ +#define OPERAND_ODD (2) + +/* this is the destination register; it will be modified */ +/* this is used by the optimizer */ +#define OPERAND_DEST (4) + +/* number or symbol */ +#define OPERAND_NUM (8) + +/* address or label */ +#define OPERAND_ADDR (0x10) + +/* register */ +#define OPERAND_REG (0x20) + +/* postincrement + */ +#define OPERAND_PLUS (0x40) + +/* postdecrement - */ +#define OPERAND_MINUS (0x80) + +/* @ */ +#define OPERAND_ATSIGN (0x100) + +/* @( */ +#define OPERAND_ATPAR (0x200) + +/* accumulator 0 */ +#define OPERAND_ACC0 (0x400) + +/* accumulator 1 */ +#define OPERAND_ACC1 (0x800) + +/* f0 / f1 flag register */ +#define OPERAND_FFLAG (0x1000) + +/* c flag register */ +#define OPERAND_CFLAG (0x2000) + +/* control register */ +#define OPERAND_CONTROL (0x4000) + +/* predecrement mode '@-sp' */ +#define OPERAND_ATMINUS (0x8000) + +/* signed number */ +#define OPERAND_SIGNED (0x10000) + +/* special accumulator shifts need a 4-bit number */ +/* 1 <= x <= 16 */ +#define OPERAND_SHIFT (0x20000) + +/* general purpose register */ +#define OPERAND_GPR (0x40000) + +/* Structure to hold information about predefined registers. */ +struct pd_reg +{ + char *name; /* name to recognize */ + char *pname; /* name to print for this register */ + int value; +}; + +extern const struct pd_reg d10v_predefined_registers[]; +int d10v_reg_name_cnt(); + +/* an expressionS only has one register type, so we fake it */ +/* by setting high bits to indicate type */ +#define REGISTER_MASK 0xFF + +#endif /* D10V_H */ |