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1 | /* ppc.h -- Header file for PowerPC opcode table |
2 | Copyright 1994, 1995, 1999, 2000, 2001, 2002, 2003 | |
3 | Free Software Foundation, Inc. | |
4 | Written by Ian Lance Taylor, Cygnus Support | |
5 | ||
6 | This file is part of GDB, GAS, and the GNU binutils. | |
7 | ||
8 | GDB, GAS, and the GNU binutils are free software; you can redistribute | |
9 | them and/or modify them under the terms of the GNU General Public | |
10 | License as published by the Free Software Foundation; either version | |
11 | 1, or (at your option) any later version. | |
12 | ||
13 | GDB, GAS, and the GNU binutils are distributed in the hope that they | |
14 | will be useful, but WITHOUT ANY WARRANTY; without even the implied | |
15 | warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
16 | the GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this file; see the file COPYING. If not, write to the Free | |
20 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #ifndef PPC_H | |
23 | #define PPC_H | |
24 | ||
25 | /* The opcode table is an array of struct powerpc_opcode. */ | |
26 | ||
27 | struct powerpc_opcode | |
28 | { | |
29 | /* The opcode name. */ | |
30 | const char *name; | |
31 | ||
32 | /* The opcode itself. Those bits which will be filled in with | |
33 | operands are zeroes. */ | |
34 | unsigned long opcode; | |
35 | ||
36 | /* The opcode mask. This is used by the disassembler. This is a | |
37 | mask containing ones indicating those bits which must match the | |
38 | opcode field, and zeroes indicating those bits which need not | |
39 | match (and are presumably filled in by operands). */ | |
40 | unsigned long mask; | |
41 | ||
42 | /* One bit flags for the opcode. These are used to indicate which | |
43 | specific processors support the instructions. The defined values | |
44 | are listed below. */ | |
45 | unsigned long flags; | |
46 | ||
47 | /* An array of operand codes. Each code is an index into the | |
48 | operand table. They appear in the order which the operands must | |
49 | appear in assembly code, and are terminated by a zero. */ | |
50 | unsigned char operands[8]; | |
51 | }; | |
52 | ||
53 | /* The table itself is sorted by major opcode number, and is otherwise | |
54 | in the order in which the disassembler should consider | |
55 | instructions. */ | |
56 | extern const struct powerpc_opcode powerpc_opcodes[]; | |
57 | extern const int powerpc_num_opcodes; | |
58 | ||
59 | /* Values defined for the flags field of a struct powerpc_opcode. */ | |
60 | ||
61 | /* Opcode is defined for the PowerPC architecture. */ | |
62 | #define PPC_OPCODE_PPC 1 | |
63 | ||
64 | /* Opcode is defined for the POWER (RS/6000) architecture. */ | |
65 | #define PPC_OPCODE_POWER 2 | |
66 | ||
67 | /* Opcode is defined for the POWER2 (Rios 2) architecture. */ | |
68 | #define PPC_OPCODE_POWER2 4 | |
69 | ||
70 | /* Opcode is only defined on 32 bit architectures. */ | |
71 | #define PPC_OPCODE_32 8 | |
72 | ||
73 | /* Opcode is only defined on 64 bit architectures. */ | |
74 | #define PPC_OPCODE_64 0x10 | |
75 | ||
76 | /* Opcode is supported by the Motorola PowerPC 601 processor. The 601 | |
77 | is assumed to support all PowerPC (PPC_OPCODE_PPC) instructions, | |
78 | but it also supports many additional POWER instructions. */ | |
79 | #define PPC_OPCODE_601 0x20 | |
80 | ||
81 | /* Opcode is supported in both the Power and PowerPC architectures | |
82 | (ie, compiler's -mcpu=common or assembler's -mcom). */ | |
83 | #define PPC_OPCODE_COMMON 0x40 | |
84 | ||
85 | /* Opcode is supported for any Power or PowerPC platform (this is | |
86 | for the assembler's -many option, and it eliminates duplicates). */ | |
87 | #define PPC_OPCODE_ANY 0x80 | |
88 | ||
89 | /* Opcode is supported as part of the 64-bit bridge. */ | |
90 | #define PPC_OPCODE_64_BRIDGE 0x100 | |
91 | ||
92 | /* Opcode is supported by Altivec Vector Unit */ | |
93 | #define PPC_OPCODE_ALTIVEC 0x200 | |
94 | ||
95 | /* Opcode is supported by PowerPC 403 processor. */ | |
96 | #define PPC_OPCODE_403 0x400 | |
97 | ||
98 | /* Opcode is supported by PowerPC BookE processor. */ | |
99 | #define PPC_OPCODE_BOOKE 0x800 | |
100 | ||
101 | /* Opcode is only supported by 64-bit PowerPC BookE processor. */ | |
102 | #define PPC_OPCODE_BOOKE64 0x1000 | |
103 | ||
104 | /* Opcode is supported by PowerPC 440 processor. */ | |
105 | #define PPC_OPCODE_440 0x2000 | |
106 | ||
107 | /* Opcode is only supported by Power4 architecture. */ | |
108 | #define PPC_OPCODE_POWER4 0x4000 | |
109 | ||
110 | /* Opcode isn't supported by Power4 architecture. */ | |
111 | #define PPC_OPCODE_NOPOWER4 0x8000 | |
112 | ||
113 | /* Opcode is only supported by POWERPC Classic architecture. */ | |
114 | #define PPC_OPCODE_CLASSIC 0x10000 | |
115 | ||
116 | /* Opcode is only supported by e500x2 Core. */ | |
117 | #define PPC_OPCODE_SPE 0x20000 | |
118 | ||
119 | /* Opcode is supported by e500x2 Integer select APU. */ | |
120 | #define PPC_OPCODE_ISEL 0x40000 | |
121 | ||
122 | /* Opcode is an e500 SPE floating point instruction. */ | |
123 | #define PPC_OPCODE_EFS 0x80000 | |
124 | ||
125 | /* Opcode is supported by branch locking APU. */ | |
126 | #define PPC_OPCODE_BRLOCK 0x100000 | |
127 | ||
128 | /* Opcode is supported by performance monitor APU. */ | |
129 | #define PPC_OPCODE_PMR 0x200000 | |
130 | ||
131 | /* Opcode is supported by cache locking APU. */ | |
132 | #define PPC_OPCODE_CACHELCK 0x400000 | |
133 | ||
134 | /* Opcode is supported by machine check APU. */ | |
135 | #define PPC_OPCODE_RFMCI 0x800000 | |
136 | ||
137 | /* A macro to extract the major opcode from an instruction. */ | |
138 | #define PPC_OP(i) (((i) >> 26) & 0x3f) | |
139 | \f | |
140 | /* The operands table is an array of struct powerpc_operand. */ | |
141 | ||
142 | struct powerpc_operand | |
143 | { | |
144 | /* The number of bits in the operand. */ | |
145 | int bits; | |
146 | ||
147 | /* How far the operand is left shifted in the instruction. */ | |
148 | int shift; | |
149 | ||
150 | /* Insertion function. This is used by the assembler. To insert an | |
151 | operand value into an instruction, check this field. | |
152 | ||
153 | If it is NULL, execute | |
154 | i |= (op & ((1 << o->bits) - 1)) << o->shift; | |
155 | (i is the instruction which we are filling in, o is a pointer to | |
156 | this structure, and op is the opcode value; this assumes twos | |
157 | complement arithmetic). | |
158 | ||
159 | If this field is not NULL, then simply call it with the | |
160 | instruction and the operand value. It will return the new value | |
161 | of the instruction. If the ERRMSG argument is not NULL, then if | |
162 | the operand value is illegal, *ERRMSG will be set to a warning | |
163 | string (the operand will be inserted in any case). If the | |
164 | operand value is legal, *ERRMSG will be unchanged (most operands | |
165 | can accept any value). */ | |
166 | unsigned long (*insert) | |
167 | (unsigned long instruction, long op, int dialect, const char **errmsg); | |
168 | ||
169 | /* Extraction function. This is used by the disassembler. To | |
170 | extract this operand type from an instruction, check this field. | |
171 | ||
172 | If it is NULL, compute | |
173 | op = ((i) >> o->shift) & ((1 << o->bits) - 1); | |
174 | if ((o->flags & PPC_OPERAND_SIGNED) != 0 | |
175 | && (op & (1 << (o->bits - 1))) != 0) | |
176 | op -= 1 << o->bits; | |
177 | (i is the instruction, o is a pointer to this structure, and op | |
178 | is the result; this assumes twos complement arithmetic). | |
179 | ||
180 | If this field is not NULL, then simply call it with the | |
181 | instruction value. It will return the value of the operand. If | |
182 | the INVALID argument is not NULL, *INVALID will be set to | |
183 | non-zero if this operand type can not actually be extracted from | |
184 | this operand (i.e., the instruction does not match). If the | |
185 | operand is valid, *INVALID will not be changed. */ | |
186 | long (*extract) (unsigned long instruction, int dialect, int *invalid); | |
187 | ||
188 | /* One bit syntax flags. */ | |
189 | unsigned long flags; | |
190 | }; | |
191 | ||
192 | /* Elements in the table are retrieved by indexing with values from | |
193 | the operands field of the powerpc_opcodes table. */ | |
194 | ||
195 | extern const struct powerpc_operand powerpc_operands[]; | |
196 | ||
197 | /* Values defined for the flags field of a struct powerpc_operand. */ | |
198 | ||
199 | /* This operand takes signed values. */ | |
200 | #define PPC_OPERAND_SIGNED (01) | |
201 | ||
202 | /* This operand takes signed values, but also accepts a full positive | |
203 | range of values when running in 32 bit mode. That is, if bits is | |
204 | 16, it takes any value from -0x8000 to 0xffff. In 64 bit mode, | |
205 | this flag is ignored. */ | |
206 | #define PPC_OPERAND_SIGNOPT (02) | |
207 | ||
208 | /* This operand does not actually exist in the assembler input. This | |
209 | is used to support extended mnemonics such as mr, for which two | |
210 | operands fields are identical. The assembler should call the | |
211 | insert function with any op value. The disassembler should call | |
212 | the extract function, ignore the return value, and check the value | |
213 | placed in the valid argument. */ | |
214 | #define PPC_OPERAND_FAKE (04) | |
215 | ||
216 | /* The next operand should be wrapped in parentheses rather than | |
217 | separated from this one by a comma. This is used for the load and | |
218 | store instructions which want their operands to look like | |
219 | reg,displacement(reg) | |
220 | */ | |
221 | #define PPC_OPERAND_PARENS (010) | |
222 | ||
223 | /* This operand may use the symbolic names for the CR fields, which | |
224 | are | |
225 | lt 0 gt 1 eq 2 so 3 un 3 | |
226 | cr0 0 cr1 1 cr2 2 cr3 3 | |
227 | cr4 4 cr5 5 cr6 6 cr7 7 | |
228 | These may be combined arithmetically, as in cr2*4+gt. These are | |
229 | only supported on the PowerPC, not the POWER. */ | |
230 | #define PPC_OPERAND_CR (020) | |
231 | ||
232 | /* This operand names a register. The disassembler uses this to print | |
233 | register names with a leading 'r'. */ | |
234 | #define PPC_OPERAND_GPR (040) | |
235 | ||
236 | /* This operand names a floating point register. The disassembler | |
237 | prints these with a leading 'f'. */ | |
238 | #define PPC_OPERAND_FPR (0100) | |
239 | ||
240 | /* This operand is a relative branch displacement. The disassembler | |
241 | prints these symbolically if possible. */ | |
242 | #define PPC_OPERAND_RELATIVE (0200) | |
243 | ||
244 | /* This operand is an absolute branch address. The disassembler | |
245 | prints these symbolically if possible. */ | |
246 | #define PPC_OPERAND_ABSOLUTE (0400) | |
247 | ||
248 | /* This operand is optional, and is zero if omitted. This is used for | |
249 | the optional BF and L fields in the comparison instructions. The | |
250 | assembler must count the number of operands remaining on the line, | |
251 | and the number of operands remaining for the opcode, and decide | |
252 | whether this operand is present or not. The disassembler should | |
253 | print this operand out only if it is not zero. */ | |
254 | #define PPC_OPERAND_OPTIONAL (01000) | |
255 | ||
256 | /* This flag is only used with PPC_OPERAND_OPTIONAL. If this operand | |
257 | is omitted, then for the next operand use this operand value plus | |
258 | 1, ignoring the next operand field for the opcode. This wretched | |
259 | hack is needed because the Power rotate instructions can take | |
260 | either 4 or 5 operands. The disassembler should print this operand | |
261 | out regardless of the PPC_OPERAND_OPTIONAL field. */ | |
262 | #define PPC_OPERAND_NEXT (02000) | |
263 | ||
264 | /* This operand should be regarded as a negative number for the | |
265 | purposes of overflow checking (i.e., the normal most negative | |
266 | number is disallowed and one more than the normal most positive | |
267 | number is allowed). This flag will only be set for a signed | |
268 | operand. */ | |
269 | #define PPC_OPERAND_NEGATIVE (04000) | |
270 | ||
271 | /* This operand names a vector unit register. The disassembler | |
272 | prints these with a leading 'v'. */ | |
273 | #define PPC_OPERAND_VR (010000) | |
274 | ||
275 | /* This operand is for the DS field in a DS form instruction. */ | |
276 | #define PPC_OPERAND_DS (020000) | |
277 | ||
278 | /* This operand is for the DQ field in a DQ form instruction. */ | |
279 | #define PPC_OPERAND_DQ (040000) | |
280 | \f | |
281 | /* The POWER and PowerPC assemblers use a few macros. We keep them | |
282 | with the operands table for simplicity. The macro table is an | |
283 | array of struct powerpc_macro. */ | |
284 | ||
285 | struct powerpc_macro | |
286 | { | |
287 | /* The macro name. */ | |
288 | const char *name; | |
289 | ||
290 | /* The number of operands the macro takes. */ | |
291 | unsigned int operands; | |
292 | ||
293 | /* One bit flags for the opcode. These are used to indicate which | |
294 | specific processors support the instructions. The values are the | |
295 | same as those for the struct powerpc_opcode flags field. */ | |
296 | unsigned long flags; | |
297 | ||
298 | /* A format string to turn the macro into a normal instruction. | |
299 | Each %N in the string is replaced with operand number N (zero | |
300 | based). */ | |
301 | const char *format; | |
302 | }; | |
303 | ||
304 | extern const struct powerpc_macro powerpc_macros[]; | |
305 | extern const int powerpc_num_macros; | |
306 | ||
307 | #endif /* PPC_H */ |