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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/ppc64/xmon/ppc.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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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
6This file is part of GDB, GAS, and the GNU binutils.
7
8GDB, GAS, and the GNU binutils are free software; you can redistribute
9them and/or modify them under the terms of the GNU General Public
10License as published by the Free Software Foundation; either version
111, or (at your option) any later version.
12
13GDB, GAS, and the GNU binutils are distributed in the hope that they
14will be useful, but WITHOUT ANY WARRANTY; without even the implied
15warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
16the GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with this file; see the file COPYING. If not, write to the Free
20Software 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
27struct 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. */
56extern const struct powerpc_opcode powerpc_opcodes[];
57extern 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
140/* The operands table is an array of struct powerpc_operand. */
141
142struct 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
195extern 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
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
285struct 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
304extern const struct powerpc_macro powerpc_macros[];
305extern const int powerpc_num_macros;
306
307#endif /* PPC_H */