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 #ifndef WITH_DEFAULT_TARGET_BYTE_ORDER
226 #define WITH_DEFAULT_TARGET_BYTE_ORDER 0 /* fatal */
229 extern int current_host_byte_order;
230 #define CURRENT_HOST_BYTE_ORDER (WITH_HOST_BYTE_ORDER \
231 ? WITH_HOST_BYTE_ORDER \
232 : current_host_byte_order)
233 extern int current_target_byte_order;
234 #define CURRENT_TARGET_BYTE_ORDER (WITH_TARGET_BYTE_ORDER \
235 ? WITH_TARGET_BYTE_ORDER \
236 : current_target_byte_order)
242 In addition to the above, the simulator can support the horrible
243 XOR endian mode (as found in the PowerPC and MIPS ISA). See
244 sim-core for more information.
246 If WITH_XOR_ENDIAN is non-zero, it specifies the number of bytes
247 potentially involved in the XOR munge. A typical value is 8. */
249 #ifndef WITH_XOR_ENDIAN
250 #define WITH_XOR_ENDIAN 0
255 /* Intel host BSWAP support:
257 Whether to use bswap on the 486 and pentiums rather than the 386
258 sequence that uses xchgb/rorl/xchgb */
267 Sets a limit on the number of processors that can be simulated. If
268 WITH_SMP is set to zero (0), the simulator is restricted to
269 suporting only one processor (and as a consequence leaves the SMP
270 code out of the build process).
272 The actual number of processors is taken from the device
273 /options/smp@<nr-cpu> */
275 #if defined (WITH_SMP) && WITH_SMP > 0
276 #define MAX_NR_PROCESSORS WITH_SMP
279 #ifndef MAX_NR_PROCESSORS
280 #define MAX_NR_PROCESSORS 1
284 /* Word size of host/target:
286 Set these according to your host and target requirements. At this
287 point in time, I've only compiled (not run) for a 64bit and never
288 built for a 64bit host. This will always remain a compile time
291 #ifndef WITH_TARGET_WORD_BITSIZE
292 #define WITH_TARGET_WORD_BITSIZE 32 /* compiled only */
295 #ifndef WITH_HOST_WORD_BITSIZE
296 #define WITH_HOST_WORD_BITSIZE 32 /* 64bit ready? */
301 /* Most significant bit of target:
303 Set this according to your target's bit numbering convention. For
304 the PowerPC it is zero, for many other targets it is 31 or 63.
306 For targets that can both have either 32 or 64 bit words and number
307 MSB as 31, 63. Define this to be (WITH_TARGET_WORD_BITSIZE - 1) */
309 #ifndef WITH_TARGET_WORD_MSB
310 #define WITH_TARGET_WORD_MSB 0
315 /* Program environment:
317 Three environments are available - UEA (user), VEA (virtual) and
318 OEA (perating). The former two are environment that users would
319 expect to see (VEA includes things like coherency and the time
320 base) while OEA is what an operating system expects to see. By
321 setting these to specific values, the build process is able to
322 eliminate non relevent environment code
324 CURRENT_ENVIRONMENT specifies which of vea or oea is required for
325 the current runtime. */
327 #if defined (WITH_ENVIRONMENT)
329 #define USER_ENVIRONMENT 1
330 #define VIRTUAL_ENVIRONMENT 2
331 #define OPERATING_ENVIRONMENT 3
333 extern int current_environment;
334 #define CURRENT_ENVIRONMENT (WITH_ENVIRONMENT \
336 : current_environment)
342 /* Callback/Default Memory.
344 Core includes a builtin memory type (raw_memory) that is
345 implemented using an array. raw_memory does not require any
346 additional functions etc.
348 Callback memory is where the core calls a core device for the data
351 Default memory is an extenstion of this where for addresses that do
352 not map into either a callback or core memory range a default map
355 The OEA model uses callback memory for devices and default memory
358 The VEA model uses callback memory to capture `page faults'.
360 While it may be possible to eliminate callback/default memory (and
361 hence also eliminate an additional test per memory fetch) it
362 probably is not worth the effort.
364 BTW, while raw_memory could have been implemented as a callback,
365 profiling has shown that there is a biger win (at least for the
366 x86) in eliminating a function call for the most common
367 (raw_memory) case. */
369 #ifndef WITH_CALLBACK_MEMORY
370 #define WITH_CALLBACK_MEMORY 1
377 A processor architecture may or may not handle miss aligned
380 As alternatives: both little and big endian modes take an exception
381 (STRICT_ALIGNMENT); big and little endian models handle mis aligned
382 transfers (NONSTRICT_ALIGNMENT); or the address is forced into
383 alignment using a mask (FORCED_ALIGNMENT).
385 Mixed alignment should be specified when the simulator needs to be
386 able to change the alignment requirements on the fly (eg for
387 bi-endian support). */
389 enum sim_alignments {
396 extern enum sim_alignments current_alignment;
398 #if !defined (WITH_ALIGNMENT)
399 #define WITH_ALIGNMENT NONSTRICT_ALIGNMENT
402 #define CURRENT_ALIGNMENT (WITH_ALIGNMENT \
408 /* Floating point suport:
410 Should the processor trap for all floating point instructions (as
411 if the hardware wasn't implemented) or implement the floating point
412 instructions directly. */
414 #if defined (WITH_FLOATING_POINT)
416 #define SOFT_FLOATING_POINT 1
417 #define HARD_FLOATING_POINT 2
419 extern int current_floating_point;
420 #define CURRENT_FLOATING_POINT (WITH_FLOATING_POINT \
421 ? WITH_FLOATING_POINT \
422 : current_floating_point)
430 Use the common start/stop/restart framework (sim-engine).
431 Simulators using the other modules but not the engine should define
435 #define WITH_ENGINE 1
442 Control the inclusion of debugging code.
443 Debugging is only turned on in rare circumstances [say during development]
444 and is not intended to be turned on otherwise. */
450 /* Include the tracing code. Disabling this eliminates all tracing
454 #define WITH_TRACE (-1)
457 /* Include the profiling code. Disabling this eliminates all profiling
461 #define WITH_PROFILE (-1)
465 /* include code that checks assertions scattered through out the
469 #define WITH_ASSERT 1
473 /* Whether to check instructions for reserved bits being set */
475 /* #define WITH_RESERVED_BITS 1 */
479 /* include monitoring code */
481 #define MONITOR_INSTRUCTION_ISSUE 1
482 #define MONITOR_LOAD_STORE_UNIT 2
483 /* do not define WITH_MON by default */
484 #define DEFAULT_WITH_MON (MONITOR_LOAD_STORE_UNIT \
485 | MONITOR_INSTRUCTION_ISSUE)
488 /* Current CPU model (models are in the generated models.h include file) */
493 #define CURRENT_MODEL (WITH_MODEL \
497 #ifndef WITH_DEFAULT_MODEL
498 #define WITH_DEFAULT_MODEL DEFAULT_MODEL
501 #define MODEL_ISSUE_IGNORE (-1)
502 #define MODEL_ISSUE_PROCESS 1
504 #ifndef WITH_MODEL_ISSUE
505 #define WITH_MODEL_ISSUE 0
508 extern int current_model_issue;
509 #define CURRENT_MODEL_ISSUE (WITH_MODEL_ISSUE \
511 : current_model_issue)
515 /* Whether or not input/output just uses stdio, or uses printf_filtered for
516 output, and polling input for input. */
518 #define DONT_USE_STDIO 2
519 #define DO_USE_STDIO 1
525 extern int current_stdio;
526 #define CURRENT_STDIO (WITH_STDIO \
532 /* Specify that configured calls pass parameters in registers when the
533 convention is that they are placed on the stack */
536 #define WITH_REGPARM 0
539 /* Specify that configured calls use an alternative calling mechanism */
542 #define WITH_STDCALL 0
546 /* complete/verify/print the simulator configuration */
548 extern SIM_RC sim_config
553 extern void print_sim_config (SIM_DESC sd);
556 #endif /* _PSIM_CONFIG_H */