1 /* This file is part of the program psim.
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.
28 The CPP below defines information about the compilation host. In
29 particular it defines the macro's:
31 WITH_HOST_BYTE_ORDER The byte order of the host. Could
32 be any of LITTLE_ENDIAN, BIG_ENDIAN
33 or 0 (unknown). Those macro's also
41 NetBSD is easy, everything you could ever want is in a header file
44 #if defined(__NetBSD__)
45 # include <machine/endian.h>
46 # if (WITH_HOST_BYTE_ORDER == 0)
47 # undef WITH_HOST_BYTE_ORDER
48 # define WITH_HOST_BYTE_ORDER BYTE_ORDER
50 # if (BYTE_ORDER != WITH_HOST_BYTE_ORDER)
51 # error "host endian incorrectly configured, check config.h"
55 /* Linux is similarly easy. */
57 #if defined(__linux__)
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. */
208 /* Until devices and tree properties are sorted out, tell sim-config.c
209 not to call the tree_find_foo fns. */
210 #define WITH_TREE_PROPERTIES 0
213 /* endianness of the host/target:
215 If the build process is aware (at compile time) of the endianness
216 of the host/target it is able to eliminate slower generic endian
219 Possible values are 0 (unknown), LITTLE_ENDIAN, BIG_ENDIAN */
221 #ifndef WITH_HOST_BYTE_ORDER
222 #define WITH_HOST_BYTE_ORDER 0 /*unknown*/
225 #ifndef WITH_TARGET_BYTE_ORDER
226 #define WITH_TARGET_BYTE_ORDER 0 /*unknown*/
229 #ifndef WITH_DEFAULT_TARGET_BYTE_ORDER
230 #define WITH_DEFAULT_TARGET_BYTE_ORDER 0 /* fatal */
233 extern int current_host_byte_order;
234 #define CURRENT_HOST_BYTE_ORDER (WITH_HOST_BYTE_ORDER \
235 ? WITH_HOST_BYTE_ORDER \
236 : current_host_byte_order)
237 extern int current_target_byte_order;
238 #define CURRENT_TARGET_BYTE_ORDER (WITH_TARGET_BYTE_ORDER \
239 ? WITH_TARGET_BYTE_ORDER \
240 : current_target_byte_order)
246 In addition to the above, the simulator can support the horrible
247 XOR endian mode (as found in the PowerPC and MIPS ISA). See
248 sim-core for more information.
250 If WITH_XOR_ENDIAN is non-zero, it specifies the number of bytes
251 potentially involved in the XOR munge. A typical value is 8. */
253 #ifndef WITH_XOR_ENDIAN
254 #define WITH_XOR_ENDIAN 0
259 /* Intel host BSWAP support:
261 Whether to use bswap on the 486 and pentiums rather than the 386
262 sequence that uses xchgb/rorl/xchgb */
271 Sets a limit on the number of processors that can be simulated. If
272 WITH_SMP is set to zero (0), the simulator is restricted to
273 suporting only one processor (and as a consequence leaves the SMP
274 code out of the build process).
276 The actual number of processors is taken from the device
277 /options/smp@<nr-cpu> */
279 #if defined (WITH_SMP) && (WITH_SMP > 0)
280 #define MAX_NR_PROCESSORS WITH_SMP
283 #ifndef MAX_NR_PROCESSORS
284 #define MAX_NR_PROCESSORS 1
288 /* Size of target word, address and OpenFirmware Cell:
290 The target word size is determined by the natural size of its
293 On most hosts, the address and cell are the same size as a target
296 #ifndef WITH_TARGET_WORD_BITSIZE
297 #define WITH_TARGET_WORD_BITSIZE 32
300 #ifndef WITH_TARGET_ADDRESS_BITSIZE
301 #define WITH_TARGET_ADDRESS_BITSIZE WITH_TARGET_WORD_BITSIZE
304 #ifndef WITH_TARGET_CELL_BITSIZE
305 #define WITH_TARGET_CELL_BITSIZE WITH_TARGET_WORD_BITSIZE
308 #ifndef WITH_TARGET_FLOATING_POINT_BITSIZE
309 #define WITH_TARGET_FLOATING_POINT_BITSIZE 64
314 /* Most significant bit of target:
316 Set this according to your target's bit numbering convention. For
317 the PowerPC it is zero, for many other targets it is 31 or 63.
319 For targets that can both have either 32 or 64 bit words and number
320 MSB as 31, 63. Define this to be (WITH_TARGET_WORD_BITSIZE - 1) */
322 #ifndef WITH_TARGET_WORD_MSB
323 #define WITH_TARGET_WORD_MSB 0
328 /* Program environment:
330 Three environments are available - UEA (user), VEA (virtual) and
331 OEA (perating). The former two are environment that users would
332 expect to see (VEA includes things like coherency and the time
333 base) while OEA is what an operating system expects to see. By
334 setting these to specific values, the build process is able to
335 eliminate non relevent environment code.
337 STATE_ENVIRONMENT(sd) specifies which of vea or oea is required for
340 ALL_ENVIRONMENT is used during configuration as a value for
341 WITH_ENVIRONMENT to indicate the choice is runtime selectable.
342 The default is then USER_ENVIRONMENT [since allowing the user to choose
343 the default at configure time seems like featuritis and since people using
344 OPERATING_ENVIRONMENT have more to worry about than selecting the
346 ALL_ENVIRONMENT is also used to set STATE_ENVIRONMENT to the
347 "uninitialized" state. */
349 enum sim_environment {
353 OPERATING_ENVIRONMENT
356 /* If the simulator specified SIM_AC_OPTION_ENVIRONMENT, indicate so. */
357 #ifdef WITH_ENVIRONMENT
358 #define SIM_HAVE_ENVIRONMENT
361 /* If the simulator doesn't specify SIM_AC_OPTION_ENVIRONMENT in its
362 configure.in, the only supported environment is the user environment. */
363 #ifndef WITH_ENVIRONMENT
364 #define WITH_ENVIRONMENT USER_ENVIRONMENT
367 #define DEFAULT_ENVIRONMENT (WITH_ENVIRONMENT != ALL_ENVIRONMENT \
372 /* Callback & Modulo Memory.
374 Core includes a builtin memory type (raw_memory) that is
375 implemented using an array. raw_memory does not require any
376 additional functions etc.
378 Callback memory is where the core calls a core device for the data
379 it requires. Callback memory can be layered using priorities.
381 Modulo memory is a variation on raw_memory where ADDRESS & (MODULO
382 - 1) is used as the index into the memory array.
384 The OEA model uses callback memory for devices.
386 The VEA model uses callback memory to capture `page faults'.
388 BTW, while raw_memory could have been implemented as a callback,
389 profiling has shown that there is a biger win (at least for the
390 x86) in eliminating a function call for the most common
391 (raw_memory) case. */
393 #ifndef WITH_CALLBACK_MEMORY
394 #define WITH_CALLBACK_MEMORY 1
397 #ifndef WITH_MODULO_MEMORY
398 #define WITH_MODULO_MEMORY 0
405 A processor architecture may or may not handle miss aligned
408 As alternatives: both little and big endian modes take an exception
409 (STRICT_ALIGNMENT); big and little endian models handle mis aligned
410 transfers (NONSTRICT_ALIGNMENT); or the address is forced into
411 alignment using a mask (FORCED_ALIGNMENT).
413 Mixed alignment should be specified when the simulator needs to be
414 able to change the alignment requirements on the fly (eg for
415 bi-endian support). */
417 enum sim_alignments {
424 extern enum sim_alignments current_alignment;
426 #if !defined (WITH_ALIGNMENT)
427 #define WITH_ALIGNMENT 0
430 #if !defined (WITH_DEFAULT_ALIGNMENT)
431 #define WITH_DEFAULT_ALIGNMENT 0 /* fatal */
437 #define CURRENT_ALIGNMENT (WITH_ALIGNMENT \
443 /* Floating point suport:
445 Should the processor trap for all floating point instructions (as
446 if the hardware wasn't implemented) or implement the floating point
447 instructions directly. */
449 #if defined (WITH_FLOATING_POINT)
451 #define SOFT_FLOATING_POINT 1
452 #define HARD_FLOATING_POINT 2
454 extern int current_floating_point;
455 #define CURRENT_FLOATING_POINT (WITH_FLOATING_POINT \
456 ? WITH_FLOATING_POINT \
457 : current_floating_point)
465 Use the common start/stop/restart framework (sim-engine).
466 Simulators using the other modules but not the engine should define
470 #define WITH_ENGINE 1
477 Control the inclusion of debugging code.
478 Debugging is only turned on in rare circumstances [say during development]
479 and is not intended to be turned on otherwise. */
485 /* Include the tracing code. Disabling this eliminates all tracing
489 #define WITH_TRACE (-1)
492 /* Include the profiling code. Disabling this eliminates all profiling
496 #define WITH_PROFILE (-1)
500 /* include code that checks assertions scattered through out the
504 #define WITH_ASSERT 1
508 /* Whether to check instructions for reserved bits being set */
510 /* #define WITH_RESERVED_BITS 1 */
514 /* include monitoring code */
516 #define MONITOR_INSTRUCTION_ISSUE 1
517 #define MONITOR_LOAD_STORE_UNIT 2
518 /* do not define WITH_MON by default */
519 #define DEFAULT_WITH_MON (MONITOR_LOAD_STORE_UNIT \
520 | MONITOR_INSTRUCTION_ISSUE)
523 /* Current CPU model (models are in the generated models.h include file) */
528 #define CURRENT_MODEL (WITH_MODEL \
532 #ifndef WITH_DEFAULT_MODEL
533 #define WITH_DEFAULT_MODEL DEFAULT_MODEL
536 #define MODEL_ISSUE_IGNORE (-1)
537 #define MODEL_ISSUE_PROCESS 1
539 #ifndef WITH_MODEL_ISSUE
540 #define WITH_MODEL_ISSUE 0
543 extern int current_model_issue;
544 #define CURRENT_MODEL_ISSUE (WITH_MODEL_ISSUE \
546 : current_model_issue)
550 /* Whether or not input/output just uses stdio, or uses printf_filtered for
551 output, and polling input for input. */
553 #define DONT_USE_STDIO 2
554 #define DO_USE_STDIO 1
560 extern int current_stdio;
561 #define CURRENT_STDIO (WITH_STDIO \
567 /* Specify that configured calls pass parameters in registers when the
568 convention is that they are placed on the stack */
571 #define WITH_REGPARM 0
574 /* Specify that configured calls use an alternative calling mechanism */
577 #define WITH_STDCALL 0
581 /* Set the default state configuration, before parsing argv. */
583 extern void sim_config_default (SIM_DESC sd);
585 /* Complete and verify the simulator configuration. */
587 extern SIM_RC sim_config (SIM_DESC sd);
589 /* Print the simulator configuration. */
591 extern void print_sim_config (SIM_DESC sd);