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1 | /* mmix.h -- Header file for MMIX opcode table |
1 | /* mmix.h -- Header file for MMIX opcode table |
2 | Copyright (C) 2001, 2003, 2010 Free Software Foundation, Inc. |
2 | Copyright (C) 2001-2015 Free Software Foundation, Inc. |
3 | Written by Hans-Peter Nilsson (hp@bitrange.com) |
3 | Written by Hans-Peter Nilsson (hp@bitrange.com) |
4 | 4 | ||
5 | This file is part of GDB, GAS, and the GNU binutils. |
5 | This file is part of GDB, GAS, and the GNU binutils. |
6 | 6 | ||
7 | GDB, GAS, and the GNU binutils are free software; you can redistribute |
7 | GDB, GAS, and the GNU binutils are free software; you can redistribute |
8 | them and/or modify them under the terms of the GNU General Public |
8 | them and/or modify them under the terms of the GNU General Public |
9 | License as published by the Free Software Foundation; either version 3, |
9 | License as published by the Free Software Foundation; either version 3, |
10 | or (at your option) any later version. |
10 | or (at your option) any later version. |
11 | 11 | ||
12 | GDB, GAS, and the GNU binutils are distributed in the hope that they |
12 | GDB, GAS, and the GNU binutils are distributed in the hope that they |
13 | will be useful, but WITHOUT ANY WARRANTY; without even the implied |
13 | will be useful, but WITHOUT ANY WARRANTY; without even the implied |
14 | warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
14 | warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
15 | the GNU General Public License for more details. |
15 | the GNU General Public License for more details. |
16 | 16 | ||
17 | You should have received a copy of the GNU General Public License |
17 | You should have received a copy of the GNU General Public License |
18 | along with this file; see the file COPYING3. If not, write to the Free |
18 | along with this file; see the file COPYING3. If not, write to the Free |
19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, |
19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, |
20 | MA 02110-1301, USA. */ |
20 | MA 02110-1301, USA. */ |
21 | 21 | ||
22 | /* We could have just a char*[] table indexed by the register number, but |
22 | /* We could have just a char*[] table indexed by the register number, but |
23 | that would not allow for synonyms. The table is terminated with an |
23 | that would not allow for synonyms. The table is terminated with an |
24 | entry with a NULL name. */ |
24 | entry with a NULL name. */ |
25 | struct mmix_spec_reg |
25 | struct mmix_spec_reg |
26 | { |
26 | { |
27 | const char *name; |
27 | const char *name; |
28 | unsigned int number; |
28 | unsigned int number; |
29 | }; |
29 | }; |
30 | 30 | ||
31 | /* General indication of the type of instruction. */ |
31 | /* General indication of the type of instruction. */ |
32 | enum mmix_insn_type |
32 | enum mmix_insn_type |
33 | { |
33 | { |
34 | mmix_type_pseudo, |
34 | mmix_type_pseudo, |
35 | mmix_type_normal, |
35 | mmix_type_normal, |
36 | mmix_type_branch, |
36 | mmix_type_branch, |
37 | mmix_type_condbranch, |
37 | mmix_type_condbranch, |
38 | mmix_type_memaccess_octa, |
38 | mmix_type_memaccess_octa, |
39 | mmix_type_memaccess_tetra, |
39 | mmix_type_memaccess_tetra, |
40 | mmix_type_memaccess_wyde, |
40 | mmix_type_memaccess_wyde, |
41 | mmix_type_memaccess_byte, |
41 | mmix_type_memaccess_byte, |
42 | mmix_type_memaccess_block, |
42 | mmix_type_memaccess_block, |
43 | mmix_type_jsr |
43 | mmix_type_jsr |
44 | }; |
44 | }; |
45 | 45 | ||
46 | /* Type of operands an instruction takes. Use when parsing assembly code |
46 | /* Type of operands an instruction takes. Use when parsing assembly code |
47 | and disassembling. */ |
47 | and disassembling. */ |
48 | enum mmix_operands_type |
48 | enum mmix_operands_type |
49 | { |
49 | { |
50 | mmix_operands_none = 0, |
50 | mmix_operands_none = 0, |
51 | 51 | ||
52 | /* All operands are registers: "$X,$Y,$Z". */ |
52 | /* All operands are registers: "$X,$Y,$Z". */ |
53 | mmix_operands_regs, |
53 | mmix_operands_regs, |
54 | 54 | ||
55 | /* "$X,YZ", like SETH. */ |
55 | /* "$X,YZ", like SETH. */ |
56 | mmix_operands_reg_yz, |
56 | mmix_operands_reg_yz, |
57 | 57 | ||
58 | /* The regular "$X,$Y,$Z|Z". |
58 | /* The regular "$X,$Y,$Z|Z". |
59 | The Z is optional; if only "$X,$Y" is given, then "$X,$Y,0" is |
59 | The Z is optional; if only "$X,$Y" is given, then "$X,$Y,0" is |
60 | assumed. */ |
60 | assumed. */ |
61 | mmix_operands_regs_z_opt, |
61 | mmix_operands_regs_z_opt, |
62 | 62 | ||
63 | /* The regular "$X,$Y,$Z|Z". */ |
63 | /* The regular "$X,$Y,$Z|Z". */ |
64 | mmix_operands_regs_z, |
64 | mmix_operands_regs_z, |
65 | 65 | ||
66 | /* "Address"; only JMP. Zero operands allowed unless GNU syntax. */ |
66 | /* "Address"; only JMP. Zero operands allowed unless GNU syntax. */ |
67 | mmix_operands_jmp, |
67 | mmix_operands_jmp, |
68 | 68 | ||
69 | /* "$X|X,$Y,$Z|Z": PUSHGO; like "3", but X can be expressed as an |
69 | /* "$X|X,$Y,$Z|Z": PUSHGO; like "3", but X can be expressed as an |
70 | integer. */ |
70 | integer. */ |
71 | mmix_operands_pushgo, |
71 | mmix_operands_pushgo, |
72 | 72 | ||
73 | /* Two registers or a register and a byte, like FLOT, possibly with |
73 | /* Two registers or a register and a byte, like FLOT, possibly with |
74 | rounding: "$X,$Z|Z" or "$X,ROUND_MODE,$Z|Z". */ |
74 | rounding: "$X,$Z|Z" or "$X,ROUND_MODE,$Z|Z". */ |
75 | mmix_operands_roundregs_z, |
75 | mmix_operands_roundregs_z, |
76 | 76 | ||
77 | /* "X,YZ", POP. Unless GNU syntax, zero or one operand is allowed. */ |
77 | /* "X,YZ", POP. Unless GNU syntax, zero or one operand is allowed. */ |
78 | mmix_operands_pop, |
78 | mmix_operands_pop, |
79 | 79 | ||
80 | /* Two registers, possibly with rounding: "$X,$Z" or |
80 | /* Two registers, possibly with rounding: "$X,$Z" or |
81 | "$X,ROUND_MODE,$Z". */ |
81 | "$X,ROUND_MODE,$Z". */ |
82 | mmix_operands_roundregs, |
82 | mmix_operands_roundregs, |
83 | 83 | ||
84 | /* "XYZ", like SYNC. */ |
84 | /* "XYZ", like SYNC. */ |
85 | mmix_operands_sync, |
85 | mmix_operands_sync, |
86 | 86 | ||
87 | /* "X,$Y,$Z|Z", like SYNCD. */ |
87 | /* "X,$Y,$Z|Z", like SYNCD. */ |
88 | mmix_operands_x_regs_z, |
88 | mmix_operands_x_regs_z, |
89 | 89 | ||
90 | /* "$X,Y,$Z|Z", like NEG and NEGU. The Y field is optional, default 0. */ |
90 | /* "$X,Y,$Z|Z", like NEG and NEGU. The Y field is optional, default 0. */ |
91 | mmix_operands_neg, |
91 | mmix_operands_neg, |
92 | 92 | ||
93 | /* "$X,Address, like GETA or branches. */ |
93 | /* "$X,Address, like GETA or branches. */ |
94 | mmix_operands_regaddr, |
94 | mmix_operands_regaddr, |
95 | 95 | ||
96 | /* "$X|X,Address, like PUSHJ. */ |
96 | /* "$X|X,Address, like PUSHJ. */ |
97 | mmix_operands_pushj, |
97 | mmix_operands_pushj, |
98 | 98 | ||
99 | /* "$X,spec_reg"; GET. */ |
99 | /* "$X,spec_reg"; GET. */ |
100 | mmix_operands_get, |
100 | mmix_operands_get, |
101 | 101 | ||
102 | /* "spec_reg,$Z|Z"; PUT. */ |
102 | /* "spec_reg,$Z|Z"; PUT. */ |
103 | mmix_operands_put, |
103 | mmix_operands_put, |
104 | 104 | ||
105 | /* Two registers, "$X,$Y". */ |
105 | /* Two registers, "$X,$Y". */ |
106 | mmix_operands_set, |
106 | mmix_operands_set, |
107 | 107 | ||
108 | /* "$X,0"; SAVE. */ |
108 | /* "$X,0"; SAVE. */ |
109 | mmix_operands_save, |
109 | mmix_operands_save, |
110 | 110 | ||
111 | /* "0,$Z"; UNSAVE. */ |
111 | /* "0,$Z"; UNSAVE. */ |
112 | mmix_operands_unsave, |
112 | mmix_operands_unsave, |
113 | 113 | ||
114 | /* "X,Y,Z"; like SWYM or TRAP. Zero (or 1 if GNU syntax) to three |
114 | /* "X,Y,Z"; like SWYM or TRAP. Zero (or 1 if GNU syntax) to three |
115 | operands, interpreted as 0; XYZ; X, YZ and X, Y, Z. */ |
115 | operands, interpreted as 0; XYZ; X, YZ and X, Y, Z. */ |
116 | mmix_operands_xyz_opt, |
116 | mmix_operands_xyz_opt, |
117 | 117 | ||
118 | /* Just "Z", like RESUME. Unless GNU syntax, the operand can be omitted |
118 | /* Just "Z", like RESUME. Unless GNU syntax, the operand can be omitted |
119 | and will then be assumed zero. */ |
119 | and will then be assumed zero. */ |
120 | mmix_operands_resume, |
120 | mmix_operands_resume, |
121 | 121 | ||
122 | /* These are specials to handle that pseudo-directives are specified |
122 | /* These are specials to handle that pseudo-directives are specified |
123 | like ordinary insns when being mmixal-compatible. They signify the |
123 | like ordinary insns when being mmixal-compatible. They signify the |
124 | specific pseudo-directive rather than the operands type. */ |
124 | specific pseudo-directive rather than the operands type. */ |
125 | 125 | ||
126 | /* LOC. */ |
126 | /* LOC. */ |
127 | mmix_operands_loc, |
127 | mmix_operands_loc, |
128 | 128 | ||
129 | /* PREFIX. */ |
129 | /* PREFIX. */ |
130 | mmix_operands_prefix, |
130 | mmix_operands_prefix, |
131 | 131 | ||
132 | /* BYTE. */ |
132 | /* BYTE. */ |
133 | mmix_operands_byte, |
133 | mmix_operands_byte, |
134 | 134 | ||
135 | /* WYDE. */ |
135 | /* WYDE. */ |
136 | mmix_operands_wyde, |
136 | mmix_operands_wyde, |
137 | 137 | ||
138 | /* TETRA. */ |
138 | /* TETRA. */ |
139 | mmix_operands_tetra, |
139 | mmix_operands_tetra, |
140 | 140 | ||
141 | /* OCTA. */ |
141 | /* OCTA. */ |
142 | mmix_operands_octa, |
142 | mmix_operands_octa, |
143 | 143 | ||
144 | /* LOCAL. */ |
144 | /* LOCAL. */ |
145 | mmix_operands_local, |
145 | mmix_operands_local, |
146 | 146 | ||
147 | /* BSPEC. */ |
147 | /* BSPEC. */ |
148 | mmix_operands_bspec, |
148 | mmix_operands_bspec, |
149 | 149 | ||
150 | /* ESPEC. */ |
150 | /* ESPEC. */ |
151 | mmix_operands_espec, |
151 | mmix_operands_espec, |
152 | }; |
152 | }; |
153 | 153 | ||
154 | struct mmix_opcode |
154 | struct mmix_opcode |
155 | { |
155 | { |
156 | const char *name; |
156 | const char *name; |
157 | unsigned long match; |
157 | unsigned long match; |
158 | unsigned long lose; |
158 | unsigned long lose; |
159 | enum mmix_operands_type operands; |
159 | enum mmix_operands_type operands; |
160 | 160 | ||
161 | /* This is used by the disassembly function. */ |
161 | /* This is used by the disassembly function. */ |
162 | enum mmix_insn_type type; |
162 | enum mmix_insn_type type; |
163 | }; |
163 | }; |
164 | 164 | ||
165 | /* Declare the actual tables. */ |
165 | /* Declare the actual tables. */ |
166 | extern const struct mmix_opcode mmix_opcodes[]; |
166 | extern const struct mmix_opcode mmix_opcodes[]; |
167 | 167 | ||
168 | /* This one is terminated with an entry with a NULL name. */ |
168 | /* This one is terminated with an entry with a NULL name. */ |
169 | extern const struct mmix_spec_reg mmix_spec_regs[]; |
169 | extern const struct mmix_spec_reg mmix_spec_regs[]; |
170 | 170 | ||
171 | /* Some insn values we use when padding and synthesizing address loads. */ |
171 | /* Some insn values we use when padding and synthesizing address loads. */ |
172 | #define IMM_OFFSET_BIT 1 |
172 | #define IMM_OFFSET_BIT 1 |
173 | #define COND_INV_BIT 0x8 |
173 | #define COND_INV_BIT 0x8 |
174 | #define PRED_INV_BIT 0x10 |
174 | #define PRED_INV_BIT 0x10 |
175 | 175 | ||
176 | #define PUSHGO_INSN_BYTE 0xbe |
176 | #define PUSHGO_INSN_BYTE 0xbe |
177 | #define GO_INSN_BYTE 0x9e |
177 | #define GO_INSN_BYTE 0x9e |
178 | #define SETL_INSN_BYTE 0xe3 |
178 | #define SETL_INSN_BYTE 0xe3 |
179 | #define INCML_INSN_BYTE 0xe6 |
179 | #define INCML_INSN_BYTE 0xe6 |
180 | #define INCMH_INSN_BYTE 0xe5 |
180 | #define INCMH_INSN_BYTE 0xe5 |
181 | #define INCH_INSN_BYTE 0xe4 |
181 | #define INCH_INSN_BYTE 0xe4 |
182 | #define SWYM_INSN_BYTE 0xfd |
182 | #define SWYM_INSN_BYTE 0xfd |
183 | #define JMP_INSN_BYTE 0xf0 |
183 | #define JMP_INSN_BYTE 0xf0 |
184 | 184 | ||
185 | /* We can have 256 - 32 (local registers) - 1 ($255 is not allocatable) |
185 | /* We can have 256 - 32 (local registers) - 1 ($255 is not allocatable) |
186 | global registers. */ |
186 | global registers. */ |
187 | #define MAX_GREGS 223 |
187 | #define MAX_GREGS 223 |