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/* s390.h -- Header file for S390 opcode table
Copyright 2000, 2001, 2003 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
This file is part of BFD, the Binary File Descriptor library.
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., 51 Franklin Street - Fifth Floor, Boston, MA
02110-1301, USA. */
#ifndef S390_H
#define S390_H
/* List of instruction sets variations. */
enum s390_opcode_mode_val
{
S390_OPCODE_ESA = 0,
S390_OPCODE_ZARCH
};
enum s390_opcode_cpu_val
{
S390_OPCODE_G5 = 0,
S390_OPCODE_G6,
S390_OPCODE_Z900,
S390_OPCODE_Z990,
S390_OPCODE_Z9_109,
S390_OPCODE_Z9_EC
};
/* The opcode table is an array of struct s390_opcode. */
struct s390_opcode
{
/* The opcode name. */
const char * name;
/* The opcode itself. Those bits which will be filled in with
operands are zeroes. */
unsigned char opcode[6];
/* The opcode mask. This is used by the disassembler. This is a
mask containing ones indicating those bits which must match the
opcode field, and zeroes indicating those bits which need not
match (and are presumably filled in by operands). */
unsigned char mask[6];
/* The opcode length in bytes. */
int oplen;
/* 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];
/* Bitmask of execution modes this opcode is available for. */
unsigned int modes;
/* First cpu this opcode is available for. */
enum s390_opcode_cpu_val min_cpu;
};
/* 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 s390_opcode s390_opcodes[];
extern const int s390_num_opcodes;
/* A opcode format table for the .insn pseudo mnemonic. */
extern const struct s390_opcode s390_opformats[];
extern const int s390_num_opformats;
/* Values defined for the flags field of a struct powerpc_opcode. */
/* The operands table is an array of struct s390_operand. */
struct s390_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. */
unsigned long flags;
};
/* Elements in the table are retrieved by indexing with values from
the operands field of the powerpc_opcodes table. */
extern const struct s390_operand s390_operands[];
/* Values defined for the flags field of a struct s390_operand. */
/* This operand names a register. The disassembler uses this to print
register names with a leading 'r'. */
#define S390_OPERAND_GPR 0x1
/* This operand names a floating point register. The disassembler
prints these with a leading 'f'. */
#define S390_OPERAND_FPR 0x2
/* This operand names an access register. The disassembler
prints these with a leading 'a'. */
#define S390_OPERAND_AR 0x4
/* This operand names a control register. The disassembler
prints these with a leading 'c'. */
#define S390_OPERAND_CR 0x8
/* This operand is a displacement. */
#define S390_OPERAND_DISP 0x10
/* This operand names a base register. */
#define S390_OPERAND_BASE 0x20
/* This operand names an index register, it can be skipped. */
#define S390_OPERAND_INDEX 0x40
/* This operand is a relative branch displacement. The disassembler
prints these symbolically if possible. */
#define S390_OPERAND_PCREL 0x80
/* This operand takes signed values. */
#define S390_OPERAND_SIGNED 0x100
/* This operand is a length. */
#define S390_OPERAND_LENGTH 0x200
/* This operand is optional. Only a single operand at the end of
the instruction may be optional. */
#define S390_OPERAND_OPTIONAL 0x400
#endif /* S390_H */
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