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[/] [openrisc/] [trunk/] [gnu-old/] [binutils-2.18.50/] [gas/] [config/] [bfin-defs.h] - Blame information for rev 856

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/* bfin-defs.h ADI Blackfin gas header file
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   Copyright 2005, 2006, 2007
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   Free Software Foundation, Inc.
4
 
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   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
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   the Free Software Foundation; either version 3, or (at your option)
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   any later version.
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12
   GAS is distributed in the hope that it will be useful,
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   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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   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
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   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  
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25
#define PCREL   1
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#define CODE_FRAG_SIZE 4096  /* 1 page.  */  
27
 
28
 
29
/* Definition for all status bits.  */
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typedef enum
31
{
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  c_0,
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  c_1,
34
  c_4,
35
  c_2,
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  c_uimm2,
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  c_uimm3,
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  c_imm3,
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  c_pcrel4,
40
  c_imm4,
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  c_uimm4s4,
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  c_uimm4,
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  c_uimm4s2,
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  c_negimm5s4,
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  c_imm5,
46
  c_uimm5,
47
  c_imm6,
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  c_imm7,
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  c_imm8,
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  c_uimm8,
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  c_pcrel8,
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  c_uimm8s4,
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  c_pcrel8s4,
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  c_lppcrel10,
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  c_pcrel10,
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  c_pcrel12,
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  c_imm16s4,
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  c_luimm16,
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  c_imm16,
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  c_huimm16,
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  c_rimm16,
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  c_imm16s2,
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  c_uimm16s4,
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  c_uimm16,
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  c_pcrel24
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} const_forms_t;
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68
 
69
/* High-Nibble: group code, low nibble: register code.  */
70
 
71
 
72
#define T_REG_R       0x00
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#define T_REG_P       0x10
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#define T_REG_I       0x20
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#define T_REG_B       0x30
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#define T_REG_L       0x34
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#define T_REG_M       0x24
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#define T_REG_A       0x40
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/* All registers above this value don't
81
   belong to a usuable register group.  */
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#define T_NOGROUP     0xa0
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84
/* Flags.  */
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#define F_REG_ALL    0x1000
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#define F_REG_HIGH   0x2000  /* Half register: high half.  */
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88
enum machine_registers
89
{
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  REG_R0    = T_REG_R, REG_R1, REG_R2, REG_R3, REG_R4, REG_R5, REG_R6, REG_R7,
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  REG_P0    = T_REG_P, REG_P1, REG_P2, REG_P3, REG_P4, REG_P5, REG_SP, REG_FP,
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  REG_I0    = T_REG_I, REG_I1, REG_I2, REG_I3,
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  REG_M0    = T_REG_M, REG_M1, REG_M2, REG_M3,
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  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,
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  REG_LC0   = 0x60, REG_LT0, REG_LB0,  REG_LC1, REG_LT1, REG_LB1,
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              REG_CYCLES, REG_CYCLES2,
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  REG_USP   = 0x70, REG_SEQSTAT, REG_SYSCFG,
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              REG_RETI, REG_RETX, REG_RETN, REG_RETE, REG_EMUDAT,
103
 
104
/* These don't have groups.  */
105
  REG_sftreset = T_NOGROUP, REG_omode, REG_excause, REG_emucause,
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                 REG_idle_req, REG_hwerrcause,
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  REG_A0       = 0xc0, REG_A1, REG_CC,
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/* Pseudo registers, used only for distinction from symbols.  */
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                 REG_RL0, REG_RL1, REG_RL2, REG_RL3,
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                 REG_RL4, REG_RL5, REG_RL6, REG_RL7,
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                 REG_RH0, REG_RH1, REG_RH2, REG_RH3,
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                 REG_RH4, REG_RH5, REG_RH6, REG_RH7,
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                 REG_LASTREG
114
};
115
 
116
/* Status register flags.  */
117
 
118
enum statusflags
119
{
120
  S_AZ = 0,
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  S_AN,
122
  S_AQ = 6,
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  S_AC0 = 12,
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  S_AC1,
125
  S_AV0 = 16,
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  S_AV0S,
127
  S_AV1,
128
  S_AV1S,
129
  S_V = 24,
130
  S_VS = 25
131
};
132
 
133
 
134
enum reg_class
135
{
136
  rc_dregs_lo,
137
  rc_dregs_hi,
138
  rc_dregs,
139
  rc_dregs_pair,
140
  rc_pregs,
141
  rc_spfp,
142
  rc_dregs_hilo,
143
  rc_accum_ext,
144
  rc_accum_word,
145
  rc_accum,
146
  rc_iregs,
147
  rc_mregs,
148
  rc_bregs,
149
  rc_lregs,
150
  rc_dpregs,
151
  rc_gregs,
152
  rc_regs,
153
  rc_statbits,
154
  rc_ignore_bits,
155
  rc_ccstat,
156
  rc_counters,
157
  rc_dregs2_sysregs1,
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  rc_open,
159
  rc_sysregs2,
160
  rc_sysregs3,
161
  rc_allregs,
162
  LIM_REG_CLASSES
163
};
164
 
165
/* mmod field.  */
166
#define M_S2RND 1
167
#define M_T     2
168
#define M_W32   3
169
#define M_FU    4
170
#define M_TFU   6
171
#define M_IS    8
172
#define M_ISS2  9
173
#define M_IH    11
174
#define M_IU    12
175
 
176
/* Register type checking macros.  */
177
 
178
#define CODE_MASK  0x07
179
#define CLASS_MASK 0xf0
180
 
181
#define REG_SAME(a, b)   ((a).regno == (b).regno)
182
#define REG_EQUAL(a, b)  (((a).regno & CODE_MASK) == ((b).regno & CODE_MASK))
183
#define REG_CLASS(a)     ((a.regno) & 0xf0)
184
#define IS_A1(a)         ((a).regno == REG_A1)
185
#define IS_H(a)          ((a).regno & F_REG_HIGH ? 1: 0)
186
#define IS_EVEN(r)       (r.regno % 2 == 0)
187
#define IS_HCOMPL(a, b)  (REG_EQUAL(a, b) && \
188
                         ((a).regno & F_REG_HIGH) != ((b).regno & F_REG_HIGH))
189
 
190
/* register type checking.  */
191
#define _TYPECHECK(r, x) (((r).regno & CLASS_MASK) == T_REG_##x)
192
 
193
#define IS_DREG(r)       _TYPECHECK(r, R)
194
#define IS_DREG_H(r)     (_TYPECHECK(r, R) && IS_H(r))
195
#define IS_DREG_L(r)     (_TYPECHECK(r, R) && !IS_H(r))
196
#define IS_PREG(r)       _TYPECHECK(r, P)
197
#define IS_IREG(r)       (((r).regno & 0xf4) == T_REG_I)
198
#define IS_MREG(r)       (((r).regno & 0xf4) == T_REG_M)
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#define IS_BREG(r)       (((r).regno & 0xf4) == T_REG_B)
200
#define IS_LREG(r)       (((r).regno & 0xf4) == T_REG_L)
201
#define IS_CREG(r)       ((r).regno == REG_LC0 || (r).regno == REG_LC1)
202
#define IS_ALLREG(r)     ((r).regno < T_NOGROUP)
203
 
204
/* Expression value macros.  */
205
 
206
typedef enum
207
{
208
  ones_compl,
209
  twos_compl,
210
  mult,
211
  divide,
212
  mod,
213
  add,
214
  sub,
215
  lsh,
216
  rsh,
217
  logand,
218
  logior,
219
  logxor
220
} expr_opcodes_t;
221
 
222
struct expressionS;
223
 
224
#define SYMBOL_T       symbolS*
225
 
226
struct expression_cell
227
{
228
  int value;
229
  SYMBOL_T symbol;
230
};
231
 
232
/* User Type Definitions.  */
233
struct bfin_insn
234
{
235
  unsigned long value;
236
  struct bfin_insn *next;
237
  struct expression_cell *exp;
238
  int pcrel;
239
  int reloc;
240
};
241
 
242
#define INSTR_T struct bfin_insn*
243
#define EXPR_T  struct expression_cell* 
244
 
245
typedef struct expr_node_struct Expr_Node;
246
 
247
extern INSTR_T gencode (unsigned long x);
248
extern INSTR_T conscode (INSTR_T head, INSTR_T tail);
249
extern INSTR_T conctcode (INSTR_T head, INSTR_T tail);
250
extern INSTR_T note_reloc
251
       (INSTR_T code, Expr_Node *, int reloc,int pcrel);
252
extern INSTR_T note_reloc1
253
       (INSTR_T code, const char * sym, int reloc, int pcrel);
254
extern INSTR_T note_reloc2
255
       (INSTR_T code, const char *symbol, int reloc, int value, int pcrel);
256
 
257
/* Types of expressions.  */
258
typedef enum
259
{
260
  Expr_Node_Binop,              /* Binary operator.  */
261
  Expr_Node_Unop,               /* Unary operator.  */
262
  Expr_Node_Reloc,              /* Symbol to be relocated.  */
263
  Expr_Node_GOT_Reloc,          /* Symbol to be relocated using the GOT.  */
264
  Expr_Node_Constant            /* Constant.  */
265
} Expr_Node_Type;
266
 
267
/* Types of operators.  */
268
typedef enum
269
{
270
  Expr_Op_Type_Add,
271
  Expr_Op_Type_Sub,
272
  Expr_Op_Type_Mult,
273
  Expr_Op_Type_Div,
274
  Expr_Op_Type_Mod,
275
  Expr_Op_Type_Lshift,
276
  Expr_Op_Type_Rshift,
277
  Expr_Op_Type_BAND,            /* Bitwise AND.  */
278
  Expr_Op_Type_BOR,             /* Bitwise OR.  */
279
  Expr_Op_Type_BXOR,            /* Bitwise exclusive OR.  */
280
  Expr_Op_Type_LAND,            /* Logical AND.  */
281
  Expr_Op_Type_LOR,             /* Logical OR.  */
282
  Expr_Op_Type_NEG,
283
  Expr_Op_Type_COMP             /* Complement.  */
284
} Expr_Op_Type;
285
 
286
/* The value that can be stored ... depends on type.  */
287
typedef union
288
{
289
  const char *s_value;          /* if relocation symbol, the text.  */
290
  int i_value;                  /* if constant, the value.  */
291
  Expr_Op_Type op_value;        /* if operator, the value.  */
292
} Expr_Node_Value;
293
 
294
/* The expression node.  */
295
struct expr_node_struct
296
{
297
  Expr_Node_Type        type;
298
  Expr_Node_Value       value;
299
  Expr_Node             *Left_Child;
300
  Expr_Node             *Right_Child;
301
};
302
 
303
 
304
/* Operations on the expression node.  */
305
Expr_Node *Expr_Node_Create (Expr_Node_Type type,
306
                         Expr_Node_Value value,
307
                         Expr_Node *Left_Child,
308
                         Expr_Node *Right_Child);
309
 
310
/* Generate the reloc structure as a series of instructions.  */
311
INSTR_T Expr_Node_Gen_Reloc (Expr_Node *head, int parent_reloc);
312
 
313
#define MKREF(x)        mkexpr (0,x)
314
#define ALLOCATE(x)     malloc (x)
315
 
316
#define NULL_CODE ((INSTR_T) 0)
317
 
318
#ifndef EXPR_VALUE
319
#define EXPR_VALUE(x)  (((x)->type == Expr_Node_Constant) ? ((x)->value.i_value) : 0)
320
#endif
321
#ifndef EXPR_SYMBOL
322
#define EXPR_SYMBOL(x) ((x)->symbol)
323
#endif
324
 
325
 
326
typedef long reg_t;
327
 
328
 
329
typedef struct _register
330
{
331
  reg_t regno;       /* Register ID as defined in machine_registers.  */
332
  int   flags;
333
} Register;
334
 
335
 
336
typedef struct _macfunc
337
{
338
  char n;
339
  char op;
340
  char w;
341
  char P;
342
  Register dst;
343
  Register s0;
344
  Register s1;
345
} Macfunc;
346
 
347
typedef struct _opt_mode
348
{
349
  int MM;
350
  int mod;
351
} Opt_mode;
352
 
353
typedef enum
354
{
355
  SEMANTIC_ERROR,
356
  NO_INSN_GENERATED,
357
  INSN_GENERATED
358
} parse_state;
359
 
360
 
361
#ifdef __cplusplus
362
extern "C" {
363
#endif
364
 
365
extern int debug_codeselection;
366
 
367
void error (char *format, ...);
368
void warn (char *format, ...);
369
int  semantic_error (char *syntax);
370
void semantic_error_2 (char *syntax);
371
 
372
EXPR_T mkexpr (int, SYMBOL_T);
373
 
374
/* Defined in bfin-lex.l.  */
375
void set_start_state (void);
376
 
377
#ifdef __cplusplus
378
}
379
#endif
380
 
381
#endif  /* BFIN_PARSE_H */
382
 

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