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[/] [openrisc/] [trunk/] [gnu-stable/] [binutils-2.20.1/] [gas/] [config/] [bfin-defs.h] - Blame information for rev 859

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/* bfin-defs.h ADI Blackfin gas header file
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   Copyright 2005, 2006, 2007, 2009
3
   Free Software Foundation, Inc.
4
 
5
   This file is part of GAS, the GNU Assembler.
6
 
7
   GAS is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
9
   the Free Software Foundation; either version 3, or (at your option)
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   any later version.
11
 
12
   GAS is distributed in the hope that it will be useful,
13
   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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17
   You should have received a copy of the GNU General Public License
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   along with GAS; see the file COPYING.  If not, write to the Free
19
   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
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   02110-1301, USA.  */
21
 
22
#ifndef BFIN_PARSE_H
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#define BFIN_PARSE_H  
24
 
25
#define PCREL   1
26
#define CODE_FRAG_SIZE 4096  /* 1 page.  */  
27
 
28
 
29
/* Definition for all status bits.  */
30
typedef enum
31
{
32
  c_0,
33
  c_1,
34
  c_4,
35
  c_2,
36
  c_uimm2,
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  c_uimm3,
38
  c_imm3,
39
  c_pcrel4,
40
  c_imm4,
41
  c_uimm4s4,
42
  c_uimm4,
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  c_uimm4s2,
44
  c_negimm5s4,
45
  c_imm5,
46
  c_uimm5,
47
  c_imm6,
48
  c_imm7,
49
  c_imm8,
50
  c_uimm8,
51
  c_pcrel8,
52
  c_uimm8s4,
53
  c_pcrel8s4,
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  c_lppcrel10,
55
  c_pcrel10,
56
  c_pcrel12,
57
  c_imm16s4,
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  c_luimm16,
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  c_imm16,
60
  c_huimm16,
61
  c_rimm16,
62
  c_imm16s2,
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  c_uimm16s4,
64
  c_uimm16,
65
  c_pcrel24
66
} const_forms_t;
67
 
68
 
69
/* High-Nibble: group code, low nibble: register code.  */
70
 
71
 
72
#define T_REG_R       0x00
73
#define T_REG_P       0x10
74
#define T_REG_I       0x20
75
#define T_REG_B       0x30
76
#define T_REG_L       0x34
77
#define T_REG_M       0x24
78
#define T_REG_A       0x40
79
 
80
/* All registers above this value don't
81
   belong to a usuable register group.  */
82
#define T_NOGROUP     0xa0
83
 
84
/* Flags.  */
85
#define F_REG_NONE 0
86
#define F_REG_HIGH 1
87
#define F_REG_LOW 2
88
 
89
enum machine_registers
90
{
91
  REG_R0    = T_REG_R, REG_R1, REG_R2, REG_R3, REG_R4, REG_R5, REG_R6, REG_R7,
92
  REG_P0    = T_REG_P, REG_P1, REG_P2, REG_P3, REG_P4, REG_P5, REG_SP, REG_FP,
93
  REG_I0    = T_REG_I, REG_I1, REG_I2, REG_I3,
94
  REG_M0    = T_REG_M, REG_M1, REG_M2, REG_M3,
95
  REG_B0    = T_REG_B, REG_B1, REG_B2, REG_B3,
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  REG_L0    = T_REG_L, REG_L1, REG_L2, REG_L3,
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  REG_A0x   = T_REG_A, REG_A0w, REG_A1x, REG_A1w,
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  REG_ASTAT = 0x46,
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  REG_RETS  = 0x47,
100
  REG_LC0   = 0x60, REG_LT0, REG_LB0,  REG_LC1, REG_LT1, REG_LB1,
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              REG_CYCLES, REG_CYCLES2,
102
  REG_USP   = 0x70, REG_SEQSTAT, REG_SYSCFG,
103
              REG_RETI, REG_RETX, REG_RETN, REG_RETE, REG_EMUDAT,
104
 
105
/* These don't have groups.  */
106
  REG_sftreset = T_NOGROUP, REG_omode, REG_excause, REG_emucause,
107
                 REG_idle_req, REG_hwerrcause,
108
  REG_A0       = 0xc0, REG_A1, REG_CC,
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/* Pseudo registers, used only for distinction from symbols.  */
110
                 REG_RL0, REG_RL1, REG_RL2, REG_RL3,
111
                 REG_RL4, REG_RL5, REG_RL6, REG_RL7,
112
                 REG_RH0, REG_RH1, REG_RH2, REG_RH3,
113
                 REG_RH4, REG_RH5, REG_RH6, REG_RH7,
114
                 REG_LASTREG
115
};
116
 
117
/* Status register flags.  */
118
 
119
enum statusflags
120
{
121
  S_AZ = 0,
122
  S_AN,
123
  S_AQ = 6,
124
  S_AC0 = 12,
125
  S_AC1,
126
  S_AV0 = 16,
127
  S_AV0S,
128
  S_AV1,
129
  S_AV1S,
130
  S_V = 24,
131
  S_VS = 25
132
};
133
 
134
 
135
enum reg_class
136
{
137
  rc_dregs_lo,
138
  rc_dregs_hi,
139
  rc_dregs,
140
  rc_dregs_pair,
141
  rc_pregs,
142
  rc_spfp,
143
  rc_dregs_hilo,
144
  rc_accum_ext,
145
  rc_accum_word,
146
  rc_accum,
147
  rc_iregs,
148
  rc_mregs,
149
  rc_bregs,
150
  rc_lregs,
151
  rc_dpregs,
152
  rc_gregs,
153
  rc_regs,
154
  rc_statbits,
155
  rc_ignore_bits,
156
  rc_ccstat,
157
  rc_counters,
158
  rc_dregs2_sysregs1,
159
  rc_open,
160
  rc_sysregs2,
161
  rc_sysregs3,
162
  rc_allregs,
163
  LIM_REG_CLASSES
164
};
165
 
166
/* mmod field.  */
167
#define M_S2RND 1
168
#define M_T     2
169
#define M_W32   3
170
#define M_FU    4
171
#define M_TFU   6
172
#define M_IS    8
173
#define M_ISS2  9
174
#define M_IH    11
175
#define M_IU    12
176
 
177
/* Register type checking macros.  */
178
 
179
#define CODE_MASK  0x07
180
#define CLASS_MASK 0xf0
181
 
182
#define REG_SAME(a, b)   ((a).regno == (b).regno)
183
#define REG_EQUAL(a, b)  (((a).regno & CODE_MASK) == ((b).regno & CODE_MASK))
184
#define REG_CLASS(a)     ((a).regno & 0xf0)
185
#define IS_A1(a)         ((a).regno == REG_A1)
186
#define IS_H(a)          ((a).flags & F_REG_HIGH ? 1: 0)
187
#define IS_EVEN(r)       ((r).regno % 2 == 0)
188
#define IS_HCOMPL(a, b)  (REG_EQUAL(a, b) && \
189
                         ((a).flags & F_REG_HIGH) != ((b).flags & F_REG_HIGH))
190
 
191
/* register type checking.  */
192
#define _TYPECHECK(r, x) (((r).regno & CLASS_MASK) == T_REG_##x)
193
 
194
#define IS_DREG(r)       _TYPECHECK(r, R)
195
#define IS_DREG_H(r)     (_TYPECHECK(r, R) && IS_H(r))
196
#define IS_DREG_L(r)     (_TYPECHECK(r, R) && !IS_H(r))
197
#define IS_PREG(r)       _TYPECHECK(r, P)
198
#define IS_IREG(r)       (((r).regno & 0xf4) == T_REG_I)
199
#define IS_MREG(r)       (((r).regno & 0xf4) == T_REG_M)
200
#define IS_BREG(r)       (((r).regno & 0xf4) == T_REG_B)
201
#define IS_LREG(r)       (((r).regno & 0xf4) == T_REG_L)
202
#define IS_CREG(r)       ((r).regno == REG_LC0 || (r).regno == REG_LC1)
203
#define IS_ALLREG(r)     ((r).regno < T_NOGROUP)
204
 
205
#define IS_GENREG(r) \
206
  (IS_DREG (r) || IS_PREG (r)                           \
207
   || (r).regno == REG_A0x || (r).regno == REG_A0w      \
208
   || (r).regno == REG_A1x || (r).regno == REG_A1w)
209
 
210
#define IS_DAGREG(r) \
211
  (IS_IREG (r) || IS_MREG (r) || IS_BREG (r) || IS_LREG (r))
212
 
213
#define IS_SYSREG(r) \
214
  ((r).regno == REG_ASTAT || (r).regno == REG_SEQSTAT           \
215
   || (r).regno == REG_SYSCFG || (r).regno == REG_RETI          \
216
   || (r).regno == REG_RETX || (r).regno == REG_RETN            \
217
   || (r).regno == REG_RETE || (r).regno == REG_RETS            \
218
   || (r).regno == REG_LC0 || (r).regno == REG_LC1              \
219
   || (r).regno == REG_LT0 || (r).regno == REG_LT1              \
220
   || (r).regno == REG_LB0 || (r).regno == REG_LB1              \
221
   || (r).regno == REG_CYCLES || (r).regno == REG_CYCLES2       \
222
   || (r).regno == REG_EMUDAT)
223
 
224
/* Expression value macros.  */
225
 
226
typedef enum
227
{
228
  ones_compl,
229
  twos_compl,
230
  mult,
231
  divide,
232
  mod,
233
  add,
234
  sub,
235
  lsh,
236
  rsh,
237
  logand,
238
  logior,
239
  logxor
240
} expr_opcodes_t;
241
 
242
struct expressionS;
243
 
244
#define SYMBOL_T       symbolS*
245
 
246
struct expression_cell
247
{
248
  int value;
249
  SYMBOL_T symbol;
250
};
251
 
252
/* User Type Definitions.  */
253
struct bfin_insn
254
{
255
  unsigned long value;
256
  struct bfin_insn *next;
257
  struct expression_cell *exp;
258
  int pcrel;
259
  int reloc;
260
};
261
 
262
#define INSTR_T struct bfin_insn*
263
#define EXPR_T  struct expression_cell* 
264
 
265
typedef struct expr_node_struct Expr_Node;
266
 
267
extern INSTR_T gencode (unsigned long x);
268
extern INSTR_T conscode (INSTR_T head, INSTR_T tail);
269
extern INSTR_T conctcode (INSTR_T head, INSTR_T tail);
270
extern INSTR_T note_reloc
271
       (INSTR_T code, Expr_Node *, int reloc,int pcrel);
272
extern INSTR_T note_reloc1
273
       (INSTR_T code, const char * sym, int reloc, int pcrel);
274
extern INSTR_T note_reloc2
275
       (INSTR_T code, const char *symbol, int reloc, int value, int pcrel);
276
 
277
/* Types of expressions.  */
278
typedef enum
279
{
280
  Expr_Node_Binop,              /* Binary operator.  */
281
  Expr_Node_Unop,               /* Unary operator.  */
282
  Expr_Node_Reloc,              /* Symbol to be relocated.  */
283
  Expr_Node_GOT_Reloc,          /* Symbol to be relocated using the GOT.  */
284
  Expr_Node_Constant            /* Constant.  */
285
} Expr_Node_Type;
286
 
287
/* Types of operators.  */
288
typedef enum
289
{
290
  Expr_Op_Type_Add,
291
  Expr_Op_Type_Sub,
292
  Expr_Op_Type_Mult,
293
  Expr_Op_Type_Div,
294
  Expr_Op_Type_Mod,
295
  Expr_Op_Type_Lshift,
296
  Expr_Op_Type_Rshift,
297
  Expr_Op_Type_BAND,            /* Bitwise AND.  */
298
  Expr_Op_Type_BOR,             /* Bitwise OR.  */
299
  Expr_Op_Type_BXOR,            /* Bitwise exclusive OR.  */
300
  Expr_Op_Type_LAND,            /* Logical AND.  */
301
  Expr_Op_Type_LOR,             /* Logical OR.  */
302
  Expr_Op_Type_NEG,
303
  Expr_Op_Type_COMP             /* Complement.  */
304
} Expr_Op_Type;
305
 
306
/* The value that can be stored ... depends on type.  */
307
typedef union
308
{
309
  const char *s_value;          /* if relocation symbol, the text.  */
310
  long long i_value;            /* if constant, the value.  */
311
  Expr_Op_Type op_value;        /* if operator, the value.  */
312
} Expr_Node_Value;
313
 
314
/* The expression node.  */
315
struct expr_node_struct
316
{
317
  Expr_Node_Type        type;
318
  Expr_Node_Value       value;
319
  Expr_Node             *Left_Child;
320
  Expr_Node             *Right_Child;
321
};
322
 
323
 
324
/* Operations on the expression node.  */
325
Expr_Node *Expr_Node_Create (Expr_Node_Type type,
326
                         Expr_Node_Value value,
327
                         Expr_Node *Left_Child,
328
                         Expr_Node *Right_Child);
329
 
330
/* Generate the reloc structure as a series of instructions.  */
331
INSTR_T Expr_Node_Gen_Reloc (Expr_Node *head, int parent_reloc);
332
 
333
#define MKREF(x)        mkexpr (0,x)
334
#define ALLOCATE(x)     malloc (x)
335
 
336
#define NULL_CODE ((INSTR_T) 0)
337
 
338
#ifndef EXPR_VALUE
339
#define EXPR_VALUE(x)  (((x)->type == Expr_Node_Constant) ? ((x)->value.i_value) : 0)
340
#endif
341
#ifndef EXPR_SYMBOL
342
#define EXPR_SYMBOL(x) ((x)->symbol)
343
#endif
344
 
345
 
346
typedef long reg_t;
347
 
348
 
349
typedef struct _register
350
{
351
  reg_t regno;       /* Register ID as defined in machine_registers.  */
352
  int   flags;
353
} Register;
354
 
355
 
356
typedef struct _macfunc
357
{
358
  char n;
359
  char op;
360
  char w;
361
  char P;
362
  Register dst;
363
  Register s0;
364
  Register s1;
365
} Macfunc;
366
 
367
typedef struct _opt_mode
368
{
369
  int MM;
370
  int mod;
371
} Opt_mode;
372
 
373
typedef enum
374
{
375
  SEMANTIC_ERROR,
376
  NO_INSN_GENERATED,
377
  INSN_GENERATED
378
} parse_state;
379
 
380
 
381
#ifdef __cplusplus
382
extern "C" {
383
#endif
384
 
385
extern int debug_codeselection;
386
 
387
void error (char *format, ...);
388
void warn (char *format, ...);
389
int  semantic_error (char *syntax);
390
void semantic_error_2 (char *syntax);
391
 
392
EXPR_T mkexpr (int, SYMBOL_T);
393
 
394
/* Defined in bfin-lex.l.  */
395
void set_start_state (void);
396
 
397
extern int insn_regmask (int, int);
398
#ifdef __cplusplus
399
}
400
#endif
401
 
402
#endif  /* BFIN_PARSE_H */
403
 

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