1 /* This file is part of the program psim.
3 Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 #ifndef _PSIM_CONFIG_H_
23 #define _PSIM_CONFIG_H_
27 The CPP below defines information about the compilation host. In
28 particular it defines the macro's:
30 WITH_HOST_BYTE_ORDER The byte order of the host. Could
31 be any of LITTLE_ENDIAN, BIG_ENDIAN
32 or 0 (unknown). Those macro's also
40 NetBSD is easy, everything you could ever want is in a header file
43 #if defined(__NetBSD__)
44 # include <machine/endian.h>
45 # if (WITH_HOST_BYTE_ORDER == 0)
46 # undef WITH_HOST_BYTE_ORDER
47 # define WITH_HOST_BYTE_ORDER BYTE_ORDER
49 # if (BYTE_ORDER != WITH_HOST_BYTE_ORDER)
50 # error "host endian incorrectly configured, check config.h"
54 /* Linux is similarly easy. */
56 #if defined(__linux__)
58 # include <asm/byteorder.h>
59 # if defined(__LITTLE_ENDIAN) && !defined(LITTLE_ENDIAN)
60 # define LITTLE_ENDIAN __LITTLE_ENDIAN
62 # if defined(__BIG_ENDIAN) && !defined(BIG_ENDIAN)
63 # define BIG_ENDIAN __BIG_ENDIAN
65 # if defined(__BYTE_ORDER) && !defined(BYTE_ORDER)
66 # define BYTE_ORDER __BYTE_ORDER
68 # if (WITH_HOST_BYTE_ORDER == 0)
69 # undef WITH_HOST_BYTE_ORDER
70 # define WITH_HOST_BYTE_ORDER BYTE_ORDER
72 # if (BYTE_ORDER != WITH_HOST_BYTE_ORDER)
73 # error "host endian incorrectly configured, check config.h"
77 /* INSERT HERE - hosts that have available LITTLE_ENDIAN and
81 /* Some hosts don't define LITTLE_ENDIAN or BIG_ENDIAN, help them out */
84 #define LITTLE_ENDIAN 1234
87 #define BIG_ENDIAN 4321
93 Big endian last time I looked */
95 #if defined(sparc) || defined(__sparc__)
96 # if (WITH_HOST_BYTE_ORDER == 0)
97 # undef WITH_HOST_BYTE_ORDER
98 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN
100 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
101 # error "sun was big endian last time I looked ..."
108 Little endian last time I looked */
110 #if defined(i386) || defined(i486) || defined(i586) || defined (i686) || defined(__i386__) || defined(__i486__) || defined(__i586__) || defined (__i686__)
111 # if (WITH_HOST_BYTE_ORDER == 0)
112 # undef WITH_HOST_BYTE_ORDER
113 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
115 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
116 # error "x86 was little endian last time I looked ..."
120 #if (defined (__i486__) || defined (__i586__) || defined (__i686__)) && defined(__GNUC__) && WITH_BSWAP
123 #define htonl(IN) __extension__ ({ int _out; __asm__ ("bswap %0" : "=r" (_out) : "0" (IN)); _out; })
124 #define ntohl(IN) __extension__ ({ int _out; __asm__ ("bswap %0" : "=r" (_out) : "0" (IN)); _out; })
127 /* Power or PowerPC running AIX */
128 #if defined(_POWER) && defined(_AIX)
129 # if (WITH_HOST_BYTE_ORDER == 0)
130 # undef WITH_HOST_BYTE_ORDER
131 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN
133 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
134 # error "Power/PowerPC AIX was big endian last time I looked ..."
138 /* Solaris running PowerPC */
139 #if defined(__PPC) && defined(__sun__)
140 # if (WITH_HOST_BYTE_ORDER == 0)
141 # undef WITH_HOST_BYTE_ORDER
142 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
144 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
145 # error "Solaris on PowerPCs was little endian last time I looked ..."
150 #if defined(__hppa__)
151 # if (WITH_HOST_BYTE_ORDER == 0)
152 # undef WITH_HOST_BYTE_ORDER
153 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN
155 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
156 # error "HP/PA was big endian last time I looked ..."
160 /* Big endian MIPS */
161 #if defined(__MIPSEB__)
162 # if (WITH_HOST_BYTE_ORDER == 0)
163 # undef WITH_HOST_BYTE_ORDER
164 # define WITH_HOST_BYTE_ORDER BIG_ENDIAN
166 # if (WITH_HOST_BYTE_ORDER != BIG_ENDIAN)
167 # error "MIPSEB was big endian last time I looked ..."
171 /* Little endian MIPS */
172 #if defined(__MIPSEL__)
173 # if (WITH_HOST_BYTE_ORDER == 0)
174 # undef WITH_HOST_BYTE_ORDER
175 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
177 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
178 # error "MIPSEL was little endian last time I looked ..."
183 #if defined(__WIN32__)
184 # if (WITH_HOST_BYTE_ORDER == 0)
185 # undef WITH_HOST_BYTE_ORDER
186 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
188 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
189 # error "Windows NT was little endian last time I looked ..."
193 /* Alpha running DEC unix */
194 #if defined(__osf__) && defined(__alpha__)
195 # if (WITH_HOST_BYTE_ORDER == 0)
196 # undef WITH_HOST_BYTE_ORDER
197 # define WITH_HOST_BYTE_ORDER LITTLE_ENDIAN
199 # if (WITH_HOST_BYTE_ORDER != LITTLE_ENDIAN)
200 # error "AXP running DEC unix was little endian last time I looked ..."
205 /* INSERT HERE - additional hosts that do not have LITTLE_ENDIAN and
206 BIG_ENDIAN definitions available. */
209 /* endianness of the host/target:
211 If the build process is aware (at compile time) of the endianness
212 of the host/target it is able to eliminate slower generic endian
215 Possible values are 0 (unknown), LITTLE_ENDIAN, BIG_ENDIAN */
217 #ifndef WITH_HOST_BYTE_ORDER
218 #define WITH_HOST_BYTE_ORDER 0 /*unknown*/
221 #ifndef WITH_TARGET_BYTE_ORDER
222 #define WITH_TARGET_BYTE_ORDER 0 /*unknown*/
225 extern int current_host_byte_order;
226 #define CURRENT_HOST_BYTE_ORDER (WITH_HOST_BYTE_ORDER \
227 ? WITH_HOST_BYTE_ORDER \
228 : current_host_byte_order)
229 extern int current_target_byte_order;
230 #define CURRENT_TARGET_BYTE_ORDER (WITH_TARGET_BYTE_ORDER \
231 ? WITH_TARGET_BYTE_ORDER \
232 : current_target_byte_order)
238 In addition to the above, the simulator can support the's horrible
239 XOR endian mode (for instance implemented by the PowerPC). This
240 feature makes it possible to control the endian mode of a processor
243 /* #define WITH_XOR_ENDIAN 8 */
247 /* Intel host BSWAP support:
249 Whether to use bswap on the 486 and pentiums rather than the 386
250 sequence that uses xchgb/rorl/xchgb */
259 Sets a limit on the number of processors that can be simulated. If
260 WITH_SMP is set to zero (0), the simulator is restricted to
261 suporting only on processor (and as a consequence leaves the SMP
262 code out of the build process).
264 The actual number of processors is taken from the device
265 /options/smp@<nr-cpu> */
267 #if defined (WITH_SMP)
270 #define MAX_NR_PROCESSORS WITH_SMP
272 #define MAX_NR_PROCESSORS 1
279 /* Word size of host/target:
281 Set these according to your host and target requirements. At this
282 point in time, I've only compiled (not run) for a 64bit and never
283 built for a 64bit host. This will always remain a compile time
286 #ifndef WITH_TARGET_WORD_BITSIZE
287 #define WITH_TARGET_WORD_BITSIZE 32 /* compiled only */
290 #ifndef WITH_HOST_WORD_BITSIZE
291 #define WITH_HOST_WORD_BITSIZE 32 /* 64bit ready? */
296 /* Most significant bit of target:
298 Set this according to your target's bit numbering convention. For
299 the PowerPC it is zero, for many other targets it is 31 or 63.
301 For targets that can both have either 32 or 64 bit words and number
302 MSB as 31, 63. Define this to be (WITH_TARGET_WORD_BITSIZE - 1) */
304 #ifndef WITH_TARGET_WORD_MSB
305 #define WITH_TARGET_WORD_MSB 0
310 /* Program environment:
312 Three environments are available - UEA (user), VEA (virtual) and
313 OEA (perating). The former two are environment that users would
314 expect to see (VEA includes things like coherency and the time
315 base) while OEA is what an operating system expects to see. By
316 setting these to specific values, the build process is able to
317 eliminate non relevent environment code
319 CURRENT_ENVIRONMENT specifies which of vea or oea is required for
320 the current runtime. */
322 #if defined (WITH_ENVIRONMENT)
324 #define USER_ENVIRONMENT 1
325 #define VIRTUAL_ENVIRONMENT 2
326 #define OPERATING_ENVIRONMENT 3
328 extern int current_environment;
329 #define CURRENT_ENVIRONMENT (WITH_ENVIRONMENT \
331 : current_environment)
337 /* Callback/Default Memory.
339 Core includes a builtin memory type (raw_memory) that is
340 implemented using an array. raw_memory does not require any
341 additional functions etc.
343 Callback memory is where the core calls a core device for the data
346 Default memory is an extenstion of this where for addresses that do
347 not map into either a callback or core memory range a default map
350 The OEA model uses callback memory for devices and default memory
353 The VEA model uses callback memory to capture `page faults'.
355 While it may be possible to eliminate callback/default memory (and
356 hence also eliminate an additional test per memory fetch) it
357 probably is not worth the effort.
359 BTW, while raw_memory could have been implemented as a callback,
360 profiling has shown that there is a biger win (at least for the
361 x86) in eliminating a function call for the most common
362 (raw_memory) case. */
364 #ifndef WITH_CALLBACK_MEMORY
365 #define WITH_CALLBACK_MEMORY 1
372 The PowerPC may or may not handle miss aligned transfers. An
373 implementation normally handles miss aligned transfers in big
374 endian mode but generates an exception in little endian mode.
376 This model. Instead allows both little and big endian modes to
377 either take exceptions or handle miss aligned transfers.
379 If 0 is specified then for big-endian mode miss alligned accesses
380 are permitted (NONSTRICT_ALIGNMENT) while in little-endian mode the
381 processor will fault on them (STRICT_ALIGNMENT). */
383 #if defined (WITH_ALIGNMENT)
385 #define NONSTRICT_ALIGNMENT 1
386 #define STRICT_ALIGNMENT 2
388 extern int current_alignment;
389 #define CURRENT_ALIGNMENT (WITH_ALIGNMENT \
397 /* Floating point suport:
399 Should the processor trap for all floating point instructions (as
400 if the hardware wasn't implemented) or implement the floating point
401 instructions directly. */
403 #if defined (WITH_FLOATING_POINT)
405 #define SOFT_FLOATING_POINT 1
406 #define HARD_FLOATING_POINT 2
408 extern int current_floating_point;
409 #define CURRENT_FLOATING_POINT (WITH_FLOATING_POINT \
410 ? WITH_FLOATING_POINT \
411 : current_floating_point)
419 Control the inclusion of debugging code.
420 Debugging is only turned on in rare circumstances [say during development]
421 and is not intended to be turned on otherwise. */
427 /* Include the tracing code. Disabling this eliminates all tracing
435 /* include code that checks assertions scattered through out the
439 #define WITH_ASSERT 1
443 /* Whether to check instructions for reserved bits being set */
445 /* #define WITH_RESERVED_BITS 1 */
449 /* include monitoring code */
451 #define MONITOR_INSTRUCTION_ISSUE 1
452 #define MONITOR_LOAD_STORE_UNIT 2
453 /* do not define WITH_MON by default */
454 #define DEFAULT_WITH_MON (MONITOR_LOAD_STORE_UNIT \
455 | MONITOR_INSTRUCTION_ISSUE)
458 /* Current CPU model (models are in the generated models.h include file) */
463 #define CURRENT_MODEL (WITH_MODEL \
467 #ifndef WITH_DEFAULT_MODEL
468 #define WITH_DEFAULT_MODEL DEFAULT_MODEL
471 #define MODEL_ISSUE_IGNORE (-1)
472 #define MODEL_ISSUE_PROCESS 1
474 #ifndef WITH_MODEL_ISSUE
475 #define WITH_MODEL_ISSUE 0
478 extern int current_model_issue;
479 #define CURRENT_MODEL_ISSUE (WITH_MODEL_ISSUE \
481 : current_model_issue)
485 /* Whether or not input/output just uses stdio, or uses printf_filtered for
486 output, and polling input for input. */
488 #define DONT_USE_STDIO 2
489 #define DO_USE_STDIO 1
495 extern int current_stdio;
496 #define CURRENT_STDIO (WITH_STDIO \
502 /* Specify that configured calls pass parameters in registers when the
503 convention is that they are placed on the stack */
506 #define WITH_REGPARM 0
509 /* Specify that configured calls use an alternative calling mechanism */
512 #define WITH_STDCALL 0
516 /* complete/verify/print the simulator configuration */
519 /* For prefered_target_byte_order arugment */
521 #if defined (bfd_little_endian)
522 #define PREFERED_TARGET_BYTE_ORDER(IMAGE) ((IMAGE) == NULL \
524 : bfd_little_endian(IMAGE) \
528 #define PREFERED_TARGET_BYTE_ORDER(IMAGE) ((IMAGE) == NULL \
530 : !(IMAGE)->xvec->byteorder_big_p \
536 extern void sim_config (SIM_DESC sd,
537 int prefered_target_byte_order);
539 extern void print_sim_config (SIM_DESC sd);
542 #endif /* _PSIM_CONFIG_H */