source: trunk/libs/newlib/src/include/opcode/s390.h @ 459

Last change on this file since 459 was 444, checked in by satin@…, 7 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
File size: 4.7 KB
Line 
1/* s390.h -- Header file for S390 opcode table
2   Copyright 2000, 2001, 2003, 2010 Free Software Foundation, Inc.
3   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
4
5   This file is part of BFD, the Binary File Descriptor library.
6
7   This program is free software; you can redistribute it and/or modify
8   it under the terms of the GNU General Public License as published by
9   the Free Software Foundation; either version 3 of the License, or
10   (at your option) any later version.
11
12   This program is distributed in the hope that it will be useful,
13   but WITHOUT ANY WARRANTY; without even the implied warranty of
14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15   GNU General Public License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with this program; if not, write to the Free Software
19   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
20   02110-1301, USA.  */
21
22#ifndef S390_H
23#define S390_H
24
25/* List of instruction sets variations. */
26
27enum s390_opcode_mode_val
28  {
29    S390_OPCODE_ESA = 0,
30    S390_OPCODE_ZARCH
31  };
32
33enum s390_opcode_cpu_val
34  {
35    S390_OPCODE_G5 = 0,
36    S390_OPCODE_G6,
37    S390_OPCODE_Z900,
38    S390_OPCODE_Z990,
39    S390_OPCODE_Z9_109,
40    S390_OPCODE_Z9_EC,
41    S390_OPCODE_Z10,
42    S390_OPCODE_Z196,
43    S390_OPCODE_ZEC12,
44    S390_OPCODE_MAXCPU
45  };
46
47/* The opcode table is an array of struct s390_opcode.  */
48
49struct s390_opcode
50  {
51    /* The opcode name.  */
52    const char * name;
53
54    /* The opcode itself.  Those bits which will be filled in with
55       operands are zeroes.  */
56    unsigned char opcode[6];
57
58    /* The opcode mask.  This is used by the disassembler.  This is a
59       mask containing ones indicating those bits which must match the
60       opcode field, and zeroes indicating those bits which need not
61       match (and are presumably filled in by operands).  */
62    unsigned char mask[6];
63
64    /* The opcode length in bytes. */
65    int oplen;
66
67    /* An array of operand codes.  Each code is an index into the
68       operand table.  They appear in the order which the operands must
69       appear in assembly code, and are terminated by a zero.  */
70    unsigned char operands[6];
71
72    /* Bitmask of execution modes this opcode is available for.  */
73    unsigned int modes;
74
75    /* First cpu this opcode is available for.  */
76    enum s390_opcode_cpu_val min_cpu;
77  };
78
79/* The table itself is sorted by major opcode number, and is otherwise
80   in the order in which the disassembler should consider
81   instructions.  */
82extern const struct s390_opcode s390_opcodes[];
83extern const int                s390_num_opcodes;
84
85/* A opcode format table for the .insn pseudo mnemonic.  */
86extern const struct s390_opcode s390_opformats[];
87extern const int                s390_num_opformats;
88
89/* Values defined for the flags field of a struct powerpc_opcode.  */
90
91/* The operands table is an array of struct s390_operand.  */
92
93struct s390_operand
94  {
95    /* The number of bits in the operand.  */
96    int bits;
97
98    /* How far the operand is left shifted in the instruction.  */
99    int shift;
100
101    /* One bit syntax flags.  */
102    unsigned long flags;
103  };
104
105/* Elements in the table are retrieved by indexing with values from
106   the operands field of the powerpc_opcodes table.  */
107
108extern const struct s390_operand s390_operands[];
109
110/* Values defined for the flags field of a struct s390_operand.  */
111
112/* This operand names a register.  The disassembler uses this to print
113   register names with a leading 'r'.  */
114#define S390_OPERAND_GPR 0x1
115
116/* This operand names a floating point register.  The disassembler
117   prints these with a leading 'f'. */
118#define S390_OPERAND_FPR 0x2
119
120/* This operand names an access register.  The disassembler
121   prints these with a leading 'a'.  */
122#define S390_OPERAND_AR 0x4
123
124/* This operand names a control register.  The disassembler
125   prints these with a leading 'c'.  */
126#define S390_OPERAND_CR 0x8
127
128/* This operand is a displacement.  */
129#define S390_OPERAND_DISP 0x10
130
131/* This operand names a base register.  */
132#define S390_OPERAND_BASE 0x20
133
134/* This operand names an index register, it can be skipped.  */
135#define S390_OPERAND_INDEX 0x40
136
137/* This operand is a relative branch displacement.  The disassembler
138   prints these symbolically if possible.  */
139#define S390_OPERAND_PCREL 0x80
140
141/* This operand takes signed values.  */
142#define S390_OPERAND_SIGNED 0x100
143
144/* This operand is a length.  */
145#define S390_OPERAND_LENGTH 0x200
146
147/* This operand is optional. Only a single operand at the end of
148   the instruction may be optional.  */
149#define S390_OPERAND_OPTIONAL 0x400
150
151/* The operand needs to be a valid GP or FP register pair.  */
152#define S390_OPERAND_REG_PAIR 0x800
153
154        #endif /* S390_H */
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