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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.2/] [sim/] [lm32/] [cpu.h] - Blame information for rev 421

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1 330 jeremybenn 
/* CPU family header for lm32bf.
2 
 
3 
THIS FILE IS MACHINE GENERATED WITH CGEN.
4 
 
5 
Copyright 1996-2010 Free Software Foundation, Inc.
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7 
This file is part of the GNU simulators.
8 
 
9 
   This file 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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14 
   It is distributed in the hope that it will be useful, but WITHOUT
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   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
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   License for more details.
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   You should have received a copy of the GNU General Public License along
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   with this program; if not, write to the Free Software Foundation, Inc.,
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   51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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23 
*/
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25 
#ifndef CPU_LM32BF_H
26 
#define CPU_LM32BF_H
27 
 
28 
/* Maximum number of instructions that are fetched at a time.
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   This is for LIW type instructions sets (e.g. m32r).  */
30 
#define MAX_LIW_INSNS 1
31 
 
32 
/* Maximum number of instructions that can be executed in parallel.  */
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#define MAX_PARALLEL_INSNS 1
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35 
/* The size of an "int" needed to hold an instruction word.
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   This is usually 32 bits, but some architectures needs 64 bits.  */
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typedef CGEN_INSN_INT CGEN_INSN_WORD;
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39 
#include "cgen-engine.h"
40 
 
41 
/* CPU state information.  */
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typedef struct {
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  /* Hardware elements.  */
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  struct {
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  /* Program counter */
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  USI h_pc;
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#define GET_H_PC() CPU (h_pc)
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#define SET_H_PC(x) (CPU (h_pc) = (x))
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  /* General purpose registers */
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  SI h_gr[32];
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#define GET_H_GR(a1) CPU (h_gr)[a1]
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#define SET_H_GR(a1, x) (CPU (h_gr)[a1] = (x))
53 
  /* Control and status registers */
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  SI h_csr[32];
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#define GET_H_CSR(a1) CPU (h_csr)[a1]
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#define SET_H_CSR(a1, x) (CPU (h_csr)[a1] = (x))
57 
  } hardware;
58 
#define CPU_CGEN_HW(cpu) (& (cpu)->cpu_data.hardware)
59 
} LM32BF_CPU_DATA;
60 
 
61 
/* Cover fns for register access.  */
62 
USI lm32bf_h_pc_get (SIM_CPU *);
63 
void lm32bf_h_pc_set (SIM_CPU *, USI);
64 
SI lm32bf_h_gr_get (SIM_CPU *, UINT);
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void lm32bf_h_gr_set (SIM_CPU *, UINT, SI);
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SI lm32bf_h_csr_get (SIM_CPU *, UINT);
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void lm32bf_h_csr_set (SIM_CPU *, UINT, SI);
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69 
/* These must be hand-written.  */
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extern CPUREG_FETCH_FN lm32bf_fetch_register;
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extern CPUREG_STORE_FN lm32bf_store_register;
72 
 
73 
typedef struct {
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  int empty;
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} MODEL_LM32_DATA;
76 
 
77 
/* Instruction argument buffer.  */
78 
 
79 
union sem_fields {
80 
  struct { /* no operands */
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    int empty;
82 
  } sfmt_empty;
83 
  struct { /*  */
84 
    IADDR i_call;
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  } sfmt_bi;
86 
  struct { /*  */
87 
    UINT f_csr;
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    UINT f_r1;
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  } sfmt_wcsr;
90 
  struct { /*  */
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    UINT f_csr;
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    UINT f_r2;
93 
  } sfmt_rcsr;
94 
  struct { /*  */
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    IADDR i_branch;
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    UINT f_r0;
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    UINT f_r1;
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  } sfmt_be;
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  struct { /*  */
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    UINT f_r0;
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    UINT f_r1;
102 
    UINT f_uimm;
103 
  } sfmt_andi;
104 
  struct { /*  */
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    INT f_imm;
106 
    UINT f_r0;
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    UINT f_r1;
108 
  } sfmt_addi;
109 
  struct { /*  */
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    UINT f_r0;
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    UINT f_r1;
112 
    UINT f_r2;
113 
    UINT f_user;
114 
  } sfmt_user;
115 
#if WITH_SCACHE_PBB
116 
  /* Writeback handler.  */
117 
  struct {
118 
    /* Pointer to argbuf entry for insn whose results need writing back.  */
119 
    const struct argbuf *abuf;
120 
  } write;
121 
  /* x-before handler */
122 
  struct {
123 
    /*const SCACHE *insns[MAX_PARALLEL_INSNS];*/
124 
    int first_p;
125 
  } before;
126 
  /* x-after handler */
127 
  struct {
128 
    int empty;
129 
  } after;
130 
  /* This entry is used to terminate each pbb.  */
131 
  struct {
132 
    /* Number of insns in pbb.  */
133 
    int insn_count;
134 
    /* Next pbb to execute.  */
135 
    SCACHE *next;
136 
    SCACHE *branch_target;
137 
  } chain;
138 
#endif
139 
};
140 
 
141 
/* The ARGBUF struct.  */
142 
struct argbuf {
143 
  /* These are the baseclass definitions.  */
144 
  IADDR addr;
145 
  const IDESC *idesc;
146 
  char trace_p;
147 
  char profile_p;
148 
  /* ??? Temporary hack for skip insns.  */
149 
  char skip_count;
150 
  char unused;
151 
  /* cpu specific data follows */
152 
  union sem semantic;
153 
  int written;
154 
  union sem_fields fields;
155 
};
156 
 
157 
/* A cached insn.
158 
 
159 
   ??? SCACHE used to contain more than just argbuf.  We could delete the
160 
   type entirely and always just use ARGBUF, but for future concerns and as
161 
   a level of abstraction it is left in.  */
162 
 
163 
struct scache {
164 
  struct argbuf argbuf;
165 
};
166 
 
167 
/* Macros to simplify extraction, reading and semantic code.
168 
   These define and assign the local vars that contain the insn's fields.  */
169 
 
170 
#define EXTRACT_IFMT_EMPTY_VARS \
171 
  unsigned int length;
172 
#define EXTRACT_IFMT_EMPTY_CODE \
173 
  length = 0; \
174 
 
175 
#define EXTRACT_IFMT_ADD_VARS \
176 
  UINT f_opcode; \
177 
  UINT f_r0; \
178 
  UINT f_r1; \
179 
  UINT f_r2; \
180 
  UINT f_resv0; \
181 
  unsigned int length;
182 
#define EXTRACT_IFMT_ADD_CODE \
183 
  length = 4; \
184 
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
185 
  f_r0 = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
186 
  f_r1 = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
187 
  f_r2 = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
188 
  f_resv0 = EXTRACT_LSB0_UINT (insn, 32, 10, 11); \
189 
 
190 
#define EXTRACT_IFMT_ADDI_VARS \
191 
  UINT f_opcode; \
192 
  UINT f_r0; \
193 
  UINT f_r1; \
194 
  INT f_imm; \
195 
  unsigned int length;
196 
#define EXTRACT_IFMT_ADDI_CODE \
197 
  length = 4; \
198 
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
199 
  f_r0 = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
200 
  f_r1 = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
201 
  f_imm = EXTRACT_LSB0_SINT (insn, 32, 15, 16); \
202 
 
203 
#define EXTRACT_IFMT_ANDI_VARS \
204 
  UINT f_opcode; \
205 
  UINT f_r0; \
206 
  UINT f_r1; \
207 
  UINT f_uimm; \
208 
  unsigned int length;
209 
#define EXTRACT_IFMT_ANDI_CODE \
210 
  length = 4; \
211 
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
212 
  f_r0 = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
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  f_r1 = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
214 
  f_uimm = EXTRACT_LSB0_UINT (insn, 32, 15, 16); \
215 
 
216 
#define EXTRACT_IFMT_ANDHII_VARS \
217 
  UINT f_opcode; \
218 
  UINT f_r0; \
219 
  UINT f_r1; \
220 
  UINT f_uimm; \
221 
  unsigned int length;
222 
#define EXTRACT_IFMT_ANDHII_CODE \
223 
  length = 4; \
224 
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
225 
  f_r0 = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
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  f_r1 = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
227 
  f_uimm = EXTRACT_LSB0_UINT (insn, 32, 15, 16); \
228 
 
229 
#define EXTRACT_IFMT_B_VARS \
230 
  UINT f_opcode; \
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  UINT f_r0; \
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  UINT f_r1; \
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  UINT f_r2; \
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  UINT f_resv0; \
235 
  unsigned int length;
236 
#define EXTRACT_IFMT_B_CODE \
237 
  length = 4; \
238 
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
239 
  f_r0 = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
240 
  f_r1 = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
241 
  f_r2 = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
242 
  f_resv0 = EXTRACT_LSB0_UINT (insn, 32, 10, 11); \
243 
 
244 
#define EXTRACT_IFMT_BI_VARS \
245 
  UINT f_opcode; \
246 
  SI f_call; \
247 
  unsigned int length;
248 
#define EXTRACT_IFMT_BI_CODE \
249 
  length = 4; \
250 
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
251 
  f_call = ((pc) + (((SI) (((EXTRACT_LSB0_SINT (insn, 32, 25, 26)) << (6))) >> (4)))); \
252 
 
253 
#define EXTRACT_IFMT_BE_VARS \
254 
  UINT f_opcode; \
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  UINT f_r0; \
256 
  UINT f_r1; \
257 
  SI f_branch; \
258 
  unsigned int length;
259 
#define EXTRACT_IFMT_BE_CODE \
260 
  length = 4; \
261 
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
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  f_r0 = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
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  f_r1 = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
264 
  f_branch = ((pc) + (((SI) (((EXTRACT_LSB0_SINT (insn, 32, 15, 16)) << (16))) >> (14)))); \
265 
 
266 
#define EXTRACT_IFMT_ORI_VARS \
267 
  UINT f_opcode; \
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  UINT f_r0; \
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  UINT f_r1; \
270 
  UINT f_uimm; \
271 
  unsigned int length;
272 
#define EXTRACT_IFMT_ORI_CODE \
273 
  length = 4; \
274 
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
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  f_r0 = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
276 
  f_r1 = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
277 
  f_uimm = EXTRACT_LSB0_UINT (insn, 32, 15, 16); \
278 
 
279 
#define EXTRACT_IFMT_RCSR_VARS \
280 
  UINT f_opcode; \
281 
  UINT f_csr; \
282 
  UINT f_r1; \
283 
  UINT f_r2; \
284 
  UINT f_resv0; \
285 
  unsigned int length;
286 
#define EXTRACT_IFMT_RCSR_CODE \
287 
  length = 4; \
288 
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
289 
  f_csr = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
290 
  f_r1 = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
291 
  f_r2 = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
292 
  f_resv0 = EXTRACT_LSB0_UINT (insn, 32, 10, 11); \
293 
 
294 
#define EXTRACT_IFMT_SEXTB_VARS \
295 
  UINT f_opcode; \
296 
  UINT f_r0; \
297 
  UINT f_r1; \
298 
  UINT f_r2; \
299 
  UINT f_resv0; \
300 
  unsigned int length;
301 
#define EXTRACT_IFMT_SEXTB_CODE \
302 
  length = 4; \
303 
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
304 
  f_r0 = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
305 
  f_r1 = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
306 
  f_r2 = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
307 
  f_resv0 = EXTRACT_LSB0_UINT (insn, 32, 10, 11); \
308 
 
309 
#define EXTRACT_IFMT_USER_VARS \
310 
  UINT f_opcode; \
311 
  UINT f_r0; \
312 
  UINT f_r1; \
313 
  UINT f_r2; \
314 
  UINT f_user; \
315 
  unsigned int length;
316 
#define EXTRACT_IFMT_USER_CODE \
317 
  length = 4; \
318 
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
319 
  f_r0 = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
320 
  f_r1 = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
321 
  f_r2 = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
322 
  f_user = EXTRACT_LSB0_UINT (insn, 32, 10, 11); \
323 
 
324 
#define EXTRACT_IFMT_WCSR_VARS \
325 
  UINT f_opcode; \
326 
  UINT f_csr; \
327 
  UINT f_r1; \
328 
  UINT f_r2; \
329 
  UINT f_resv0; \
330 
  unsigned int length;
331 
#define EXTRACT_IFMT_WCSR_CODE \
332 
  length = 4; \
333 
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
334 
  f_csr = EXTRACT_LSB0_UINT (insn, 32, 25, 5); \
335 
  f_r1 = EXTRACT_LSB0_UINT (insn, 32, 20, 5); \
336 
  f_r2 = EXTRACT_LSB0_UINT (insn, 32, 15, 5); \
337 
  f_resv0 = EXTRACT_LSB0_UINT (insn, 32, 10, 11); \
338 
 
339 
#define EXTRACT_IFMT_BREAK_VARS \
340 
  UINT f_opcode; \
341 
  UINT f_exception; \
342 
  unsigned int length;
343 
#define EXTRACT_IFMT_BREAK_CODE \
344 
  length = 4; \
345 
  f_opcode = EXTRACT_LSB0_UINT (insn, 32, 31, 6); \
346 
  f_exception = EXTRACT_LSB0_UINT (insn, 32, 25, 26); \
347 
 
348 
/* Collection of various things for the trace handler to use.  */
349 
 
350 
typedef struct trace_record {
351 
  IADDR pc;
352 
  /* FIXME:wip */
353 
} TRACE_RECORD;
354 
 
355 
#endif /* CPU_LM32BF_H */

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