Commit | Line | Data |
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f6bcefef | 1 | /* Main simulator entry points specific to the CRIS. |
c5a57081 | 2 | Copyright (C) 2004-2012 Free Software Foundation, Inc. |
f6bcefef HPN |
3 | Contributed by Axis Communications. |
4 | ||
5 | This file is part of the GNU simulators. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
4744ac1b JB |
9 | the Free Software Foundation; either version 3 of the License, or |
10 | (at your option) any later version. | |
f6bcefef HPN |
11 | |
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
4744ac1b JB |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
f6bcefef HPN |
19 | |
20 | /* Based on the fr30 file, mixing in bits from the i960 and pruning of | |
21 | dead code. */ | |
22 | ||
23 | #include "libiberty.h" | |
24 | #include "bfd.h" | |
80e5c09e | 25 | #include "elf-bfd.h" |
f6bcefef HPN |
26 | |
27 | #include "sim-main.h" | |
28 | #ifdef HAVE_STDLIB_H | |
29 | #include <stdlib.h> | |
30 | #endif | |
c10b3605 | 31 | #include <errno.h> |
f6bcefef HPN |
32 | #include "sim-options.h" |
33 | #include "dis-asm.h" | |
34 | ||
35 | /* Apparently the autoconf bits are missing (though HAVE_ENVIRON is used | |
36 | in other dirs; also lacking there). Patch around it for major systems. */ | |
37 | #if defined (HAVE_ENVIRON) || defined (__GLIBC__) | |
38 | extern char **environ; | |
39 | #define GET_ENVIRON() environ | |
40 | #else | |
41 | char *missing_environ[] = { "SHELL=/bin/sh", "PATH=/bin:/usr/bin", NULL }; | |
42 | #define GET_ENVIRON() missing_environ | |
43 | #endif | |
44 | ||
f6bcefef HPN |
45 | /* Used with get_progbounds to find out how much memory is needed for the |
46 | program. We don't want to allocate more, since that could mask | |
47 | invalid memory accesses program bugs. */ | |
48 | struct progbounds { | |
49 | USI startmem; | |
50 | USI endmem; | |
80e5c09e HPN |
51 | USI end_loadmem; |
52 | USI start_nonloadmem; | |
f6bcefef HPN |
53 | }; |
54 | ||
55 | static void free_state (SIM_DESC); | |
80e5c09e | 56 | static void get_progbounds_iterator (bfd *, asection *, void *); |
f6bcefef HPN |
57 | static SIM_RC cris_option_handler (SIM_DESC, sim_cpu *, int, char *, int); |
58 | ||
59 | /* Since we don't build the cgen-opcode table, we use the old | |
60 | disassembler. */ | |
61 | static CGEN_DISASSEMBLER cris_disassemble_insn; | |
62 | ||
63 | /* By default, we set up stack and environment variables like the Linux | |
64 | kernel. */ | |
65 | static char cris_bare_iron = 0; | |
66 | ||
67 | /* Whether 0x9000000xx have simulator-specific meanings. */ | |
aad3b3cb | 68 | char cris_have_900000xxif = 0; |
f6bcefef | 69 | |
c10b3605 HPN |
70 | /* Used to optionally override the default start address of the |
71 | simulation. */ | |
72 | static USI cris_start_address = 0xffffffffu; | |
73 | ||
74 | /* Used to optionally add offsets to the loaded image and its start | |
75 | address. (Not used for the interpreter of dynamically loaded | |
76 | programs or the DSO:s.) */ | |
77 | static int cris_program_offset = 0; | |
78 | ||
466b1d33 HPN |
79 | /* What to do when we face a more or less unknown syscall. */ |
80 | enum cris_unknown_syscall_action_type cris_unknown_syscall_action | |
81 | = CRIS_USYSC_MSG_STOP; | |
82 | ||
f6bcefef HPN |
83 | /* Records simulator descriptor so utilities like cris_dump_regs can be |
84 | called from gdb. */ | |
85 | SIM_DESC current_state; | |
86 | ||
87 | /* CRIS-specific options. */ | |
88 | typedef enum { | |
89 | OPTION_CRIS_STATS = OPTION_START, | |
90 | OPTION_CRIS_TRACE, | |
91 | OPTION_CRIS_NAKED, | |
c10b3605 HPN |
92 | OPTION_CRIS_PROGRAM_OFFSET, |
93 | OPTION_CRIS_STARTADDR, | |
f6bcefef | 94 | OPTION_CRIS_900000XXIF, |
466b1d33 | 95 | OPTION_CRIS_UNKNOWN_SYSCALL |
f6bcefef HPN |
96 | } CRIS_OPTIONS; |
97 | ||
98 | static const OPTION cris_options[] = | |
99 | { | |
100 | { {"cris-cycles", required_argument, NULL, OPTION_CRIS_STATS}, | |
101 | '\0', "basic|unaligned|schedulable|all", | |
102 | "Dump execution statistics", | |
103 | cris_option_handler, NULL }, | |
104 | { {"cris-trace", required_argument, NULL, OPTION_CRIS_TRACE}, | |
105 | '\0', "basic", | |
106 | "Emit trace information while running", | |
107 | cris_option_handler, NULL }, | |
108 | { {"cris-naked", no_argument, NULL, OPTION_CRIS_NAKED}, | |
109 | '\0', NULL, "Don't set up stack and environment", | |
110 | cris_option_handler, NULL }, | |
111 | { {"cris-900000xx", no_argument, NULL, OPTION_CRIS_900000XXIF}, | |
112 | '\0', NULL, "Define addresses at 0x900000xx with simulator semantics", | |
113 | cris_option_handler, NULL }, | |
466b1d33 HPN |
114 | { {"cris-unknown-syscall", required_argument, NULL, |
115 | OPTION_CRIS_UNKNOWN_SYSCALL}, | |
116 | '\0', "stop|enosys|enosys-quiet", "Action at an unknown system call", | |
117 | cris_option_handler, NULL }, | |
c10b3605 HPN |
118 | { {"cris-program-offset", required_argument, NULL, |
119 | OPTION_CRIS_PROGRAM_OFFSET}, | |
120 | '\0', "OFFSET", | |
121 | "Offset image addresses and default start address of a program", | |
122 | cris_option_handler }, | |
123 | { {"cris-start-address", required_argument, NULL, OPTION_CRIS_STARTADDR}, | |
124 | '\0', "ADDRESS", "Set start address", | |
125 | cris_option_handler }, | |
f6bcefef HPN |
126 | { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL, NULL } |
127 | }; | |
128 | \f | |
129 | /* Add the CRIS-specific option list to the simulator. */ | |
130 | ||
131 | SIM_RC | |
132 | cris_option_install (SIM_DESC sd) | |
133 | { | |
134 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
135 | if (sim_add_option_table (sd, NULL, cris_options) != SIM_RC_OK) | |
136 | return SIM_RC_FAIL; | |
137 | return SIM_RC_OK; | |
138 | } | |
139 | ||
140 | /* Handle CRIS-specific options. */ | |
141 | ||
142 | static SIM_RC | |
143 | cris_option_handler (SIM_DESC sd, sim_cpu *cpu ATTRIBUTE_UNUSED, int opt, | |
144 | char *arg, int is_command ATTRIBUTE_UNUSED) | |
145 | { | |
146 | /* The options are CRIS-specific, but cpu-specific option-handling is | |
147 | broken; required to being with "--cpu0-". We store the flags in an | |
148 | unused field in the global state structure and move the flags over | |
149 | to the module-specific CPU data when we store things in the | |
150 | cpu-specific structure. */ | |
151 | char *tracefp = STATE_TRACE_FLAGS (sd); | |
c10b3605 | 152 | char *chp = arg; |
f6bcefef HPN |
153 | |
154 | switch ((CRIS_OPTIONS) opt) | |
155 | { | |
156 | case OPTION_CRIS_STATS: | |
157 | if (strcmp (arg, "basic") == 0) | |
158 | *tracefp = FLAG_CRIS_MISC_PROFILE_SIMPLE; | |
159 | else if (strcmp (arg, "unaligned") == 0) | |
160 | *tracefp | |
161 | = (FLAG_CRIS_MISC_PROFILE_UNALIGNED | |
162 | | FLAG_CRIS_MISC_PROFILE_SIMPLE); | |
163 | else if (strcmp (arg, "schedulable") == 0) | |
164 | *tracefp | |
165 | = (FLAG_CRIS_MISC_PROFILE_SCHEDULABLE | |
166 | | FLAG_CRIS_MISC_PROFILE_SIMPLE); | |
167 | else if (strcmp (arg, "all") == 0) | |
168 | *tracefp = FLAG_CRIS_MISC_PROFILE_ALL; | |
169 | else | |
170 | { | |
466b1d33 HPN |
171 | /* Beware; the framework does not handle the error case; |
172 | we have to do it ourselves. */ | |
173 | sim_io_eprintf (sd, "Unknown option `--cris-cycles=%s'\n", arg); | |
f6bcefef HPN |
174 | return SIM_RC_FAIL; |
175 | } | |
176 | break; | |
177 | ||
178 | case OPTION_CRIS_TRACE: | |
179 | if (strcmp (arg, "basic") == 0) | |
180 | *tracefp |= FLAG_CRIS_MISC_PROFILE_XSIM_TRACE; | |
181 | else | |
182 | { | |
183 | sim_io_eprintf (sd, "Unknown option `--cris-trace=%s'\n", arg); | |
184 | return SIM_RC_FAIL; | |
185 | } | |
186 | break; | |
187 | ||
188 | case OPTION_CRIS_NAKED: | |
189 | cris_bare_iron = 1; | |
190 | break; | |
191 | ||
192 | case OPTION_CRIS_900000XXIF: | |
193 | cris_have_900000xxif = 1; | |
194 | break; | |
195 | ||
c10b3605 HPN |
196 | case OPTION_CRIS_STARTADDR: |
197 | errno = 0; | |
198 | cris_start_address = (USI) strtoul (chp, &chp, 0); | |
199 | ||
200 | if (errno != 0 || *chp != 0) | |
201 | { | |
202 | sim_io_eprintf (sd, "Invalid option `--cris-start-address=%s'\n", | |
203 | arg); | |
204 | return SIM_RC_FAIL; | |
205 | } | |
206 | break; | |
207 | ||
208 | case OPTION_CRIS_PROGRAM_OFFSET: | |
209 | errno = 0; | |
210 | cris_program_offset = (int) strtol (chp, &chp, 0); | |
211 | ||
212 | if (errno != 0 || *chp != 0) | |
213 | { | |
214 | sim_io_eprintf (sd, "Invalid option `--cris-program-offset=%s'\n", | |
215 | arg); | |
216 | return SIM_RC_FAIL; | |
217 | } | |
218 | break; | |
219 | ||
466b1d33 HPN |
220 | case OPTION_CRIS_UNKNOWN_SYSCALL: |
221 | if (strcmp (arg, "enosys") == 0) | |
222 | cris_unknown_syscall_action = CRIS_USYSC_MSG_ENOSYS; | |
223 | else if (strcmp (arg, "enosys-quiet") == 0) | |
224 | cris_unknown_syscall_action = CRIS_USYSC_QUIET_ENOSYS; | |
225 | else if (strcmp (arg, "stop") == 0) | |
226 | cris_unknown_syscall_action = CRIS_USYSC_MSG_STOP; | |
227 | else | |
228 | { | |
229 | sim_io_eprintf (sd, "Unknown option `--cris-unknown-syscall=%s'\n", | |
230 | arg); | |
231 | return SIM_RC_FAIL; | |
232 | } | |
233 | break; | |
234 | ||
f6bcefef HPN |
235 | default: |
236 | /* We'll actually never get here; the caller handles the error | |
237 | case. */ | |
238 | sim_io_eprintf (sd, "Unknown option `%s'\n", arg); | |
239 | return SIM_RC_FAIL; | |
240 | } | |
241 | ||
242 | /* Imply --profile-model=on. */ | |
243 | return sim_profile_set_option (sd, "-model", PROFILE_MODEL_IDX, "on"); | |
244 | } | |
245 | ||
80e5c09e HPN |
246 | /* FIXME: Remove these, globalize those in sim-load.c, move elsewhere. */ |
247 | ||
248 | static void | |
249 | xprintf (host_callback *callback, const char *fmt, ...) | |
250 | { | |
251 | va_list ap; | |
252 | ||
253 | va_start (ap, fmt); | |
254 | ||
255 | (*callback->vprintf_filtered) (callback, fmt, ap); | |
256 | ||
257 | va_end (ap); | |
258 | } | |
259 | ||
260 | static void | |
261 | eprintf (host_callback *callback, const char *fmt, ...) | |
262 | { | |
263 | va_list ap; | |
264 | ||
265 | va_start (ap, fmt); | |
266 | ||
267 | (*callback->evprintf_filtered) (callback, fmt, ap); | |
268 | ||
269 | va_end (ap); | |
270 | } | |
271 | ||
272 | /* An ELF-specific simplified ../common/sim-load.c:sim_load_file, | |
273 | using the program headers, not sections, in order to make sure that | |
274 | the program headers themeselves are also loaded. The caller is | |
275 | responsible for asserting that ABFD is an ELF file. */ | |
276 | ||
277 | static bfd_boolean | |
278 | cris_load_elf_file (SIM_DESC sd, struct bfd *abfd, sim_write_fn do_write) | |
279 | { | |
280 | Elf_Internal_Phdr *phdr; | |
281 | int n_hdrs; | |
282 | int i; | |
283 | bfd_boolean verbose = STATE_OPEN_KIND (sd) == SIM_OPEN_DEBUG; | |
284 | host_callback *callback = STATE_CALLBACK (sd); | |
285 | ||
286 | phdr = elf_tdata (abfd)->phdr; | |
287 | n_hdrs = elf_elfheader (abfd)->e_phnum; | |
288 | ||
289 | /* We're only interested in PT_LOAD; all necessary information | |
290 | should be covered by that. */ | |
291 | for (i = 0; i < n_hdrs; i++) | |
292 | { | |
293 | bfd_byte *buf; | |
294 | bfd_vma lma = STATE_LOAD_AT_LMA_P (sd) | |
295 | ? phdr[i].p_paddr : phdr[i].p_vaddr; | |
296 | ||
297 | if (phdr[i].p_type != PT_LOAD) | |
298 | continue; | |
299 | ||
300 | buf = xmalloc (phdr[i].p_filesz); | |
301 | ||
302 | if (verbose) | |
303 | xprintf (callback, "Loading segment at 0x%lx, size 0x%lx\n", | |
304 | lma, phdr[i].p_filesz); | |
305 | ||
306 | if (bfd_seek (abfd, phdr[i].p_offset, SEEK_SET) != 0 | |
307 | || (bfd_bread (buf, phdr[i].p_filesz, abfd) != phdr[i].p_filesz)) | |
308 | { | |
309 | eprintf (callback, | |
310 | "%s: could not read segment at 0x%lx, size 0x%lx\n", | |
311 | STATE_MY_NAME (sd), lma, phdr[i].p_filesz); | |
312 | free (buf); | |
313 | return FALSE; | |
314 | } | |
315 | ||
316 | if (do_write (sd, lma, buf, phdr[i].p_filesz) != phdr[i].p_filesz) | |
317 | { | |
318 | eprintf (callback, | |
319 | "%s: could not load segment at 0x%lx, size 0x%lx\n", | |
320 | STATE_MY_NAME (sd), lma, phdr[i].p_filesz); | |
321 | free (buf); | |
322 | return FALSE; | |
323 | } | |
324 | ||
325 | free (buf); | |
326 | } | |
327 | ||
328 | return TRUE; | |
329 | } | |
330 | ||
c10b3605 HPN |
331 | /* Helper for sim_load (needed just for ELF files): like sim_write, |
332 | but offset load at cris_program_offset offset. */ | |
333 | ||
334 | static int | |
335 | cris_program_offset_write (SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, | |
336 | int length) | |
337 | { | |
338 | return sim_write (sd, mem + cris_program_offset, buf, length); | |
339 | } | |
340 | ||
80e5c09e HPN |
341 | /* Replacement for ../common/sim-hload.c:sim_load, so we can treat ELF |
342 | files differently. */ | |
343 | ||
344 | SIM_RC | |
345 | sim_load (SIM_DESC sd, char *prog_name, struct bfd *prog_bfd, | |
346 | int from_tty ATTRIBUTE_UNUSED) | |
347 | { | |
348 | bfd *result_bfd; | |
349 | ||
350 | if (bfd_get_flavour (prog_bfd) != bfd_target_elf_flavour) | |
351 | { | |
352 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
353 | if (sim_analyze_program (sd, prog_name, prog_bfd) != SIM_RC_OK) | |
354 | return SIM_RC_FAIL; | |
355 | SIM_ASSERT (STATE_PROG_BFD (sd) != NULL); | |
356 | ||
357 | result_bfd = sim_load_file (sd, STATE_MY_NAME (sd), | |
358 | STATE_CALLBACK (sd), | |
359 | prog_name, | |
360 | STATE_PROG_BFD (sd), | |
361 | STATE_OPEN_KIND (sd) == SIM_OPEN_DEBUG, | |
362 | STATE_LOAD_AT_LMA_P (sd), | |
363 | sim_write); | |
364 | if (result_bfd == NULL) | |
365 | { | |
366 | bfd_close (STATE_PROG_BFD (sd)); | |
367 | STATE_PROG_BFD (sd) = NULL; | |
368 | return SIM_RC_FAIL; | |
369 | } | |
370 | return SIM_RC_OK; | |
371 | } | |
372 | ||
c10b3605 | 373 | return cris_load_elf_file (sd, prog_bfd, cris_program_offset_write) |
80e5c09e HPN |
374 | ? SIM_RC_OK : SIM_RC_FAIL; |
375 | } | |
376 | ||
f6bcefef HPN |
377 | /* Cover function of sim_state_free to free the cpu buffers as well. */ |
378 | ||
379 | static void | |
380 | free_state (SIM_DESC sd) | |
381 | { | |
382 | if (STATE_MODULES (sd) != NULL) | |
383 | sim_module_uninstall (sd); | |
384 | sim_cpu_free_all (sd); | |
385 | sim_state_free (sd); | |
386 | } | |
387 | ||
c10b3605 HPN |
388 | /* Helper struct for cris_set_section_offset_iterator. */ |
389 | ||
390 | struct offsetinfo | |
391 | { | |
392 | SIM_DESC sd; | |
393 | int offset; | |
394 | }; | |
395 | ||
396 | /* BFD section iterator to offset the LMA and VMA. */ | |
397 | ||
398 | static void | |
399 | cris_set_section_offset_iterator (bfd *abfd, asection *s, void *vp) | |
400 | { | |
401 | struct offsetinfo *p = (struct offsetinfo *) vp; | |
402 | SIM_DESC sd = p->sd; | |
403 | int offset = p->offset; | |
404 | ||
405 | if ((bfd_get_section_flags (abfd, s) & SEC_ALLOC)) | |
406 | { | |
407 | bfd_vma vma = bfd_get_section_vma (abfd, s); | |
408 | ||
409 | bfd_set_section_vma (abfd, s, vma + offset); | |
410 | } | |
411 | ||
412 | /* This seems clumsy and inaccurate, but let's stick to doing it the | |
413 | same way as sim_analyze_program for consistency. */ | |
414 | if (strcmp (bfd_get_section_name (abfd, s), ".text") == 0) | |
415 | STATE_TEXT_START (sd) = bfd_get_section_vma (abfd, s); | |
416 | } | |
417 | ||
418 | /* Adjust the start-address, LMA and VMA of a SD. Must be called | |
419 | after sim_analyze_program. */ | |
420 | ||
421 | static void | |
422 | cris_offset_sections (SIM_DESC sd, int offset) | |
423 | { | |
424 | bfd_boolean ret; | |
425 | struct bfd *abfd = STATE_PROG_BFD (sd); | |
426 | asection *text; | |
427 | struct offsetinfo oi; | |
428 | ||
429 | /* Only happens for usage error. */ | |
430 | if (abfd == NULL) | |
431 | return; | |
432 | ||
433 | oi.sd = sd; | |
434 | oi.offset = offset; | |
435 | ||
436 | bfd_map_over_sections (abfd, cris_set_section_offset_iterator, &oi); | |
437 | ret = bfd_set_start_address (abfd, bfd_get_start_address (abfd) + offset); | |
438 | ||
439 | STATE_START_ADDR (sd) = bfd_get_start_address (abfd); | |
440 | } | |
441 | ||
80e5c09e HPN |
442 | /* BFD section iterator to find the highest and lowest allocated and |
443 | non-allocated section addresses (plus one). */ | |
f6bcefef | 444 | |
80e5c09e HPN |
445 | static void |
446 | get_progbounds_iterator (bfd *abfd ATTRIBUTE_UNUSED, asection *s, void *vp) | |
f6bcefef HPN |
447 | { |
448 | struct progbounds *pbp = (struct progbounds *) vp; | |
449 | ||
450 | if ((bfd_get_section_flags (abfd, s) & SEC_ALLOC)) | |
451 | { | |
452 | bfd_size_type sec_size = bfd_get_section_size (s); | |
453 | bfd_size_type sec_start = bfd_get_section_vma (abfd, s); | |
454 | bfd_size_type sec_end = sec_start + sec_size; | |
455 | ||
456 | if (sec_end > pbp->endmem) | |
457 | pbp->endmem = sec_end; | |
458 | ||
459 | if (sec_start < pbp->startmem) | |
460 | pbp->startmem = sec_start; | |
80e5c09e HPN |
461 | |
462 | if ((bfd_get_section_flags (abfd, s) & SEC_LOAD)) | |
463 | { | |
464 | if (sec_end > pbp->end_loadmem) | |
465 | pbp->end_loadmem = sec_end; | |
466 | } | |
467 | else if (sec_start < pbp->start_nonloadmem) | |
468 | pbp->start_nonloadmem = sec_start; | |
469 | } | |
470 | } | |
471 | ||
472 | /* Get the program boundaries. Because not everything is covered by | |
473 | sections in ELF, notably the program headers, we use the program | |
474 | headers instead. */ | |
475 | ||
476 | static void | |
477 | cris_get_progbounds (struct bfd *abfd, struct progbounds *pbp) | |
478 | { | |
479 | Elf_Internal_Phdr *phdr; | |
480 | int n_hdrs; | |
481 | int i; | |
482 | ||
483 | pbp->startmem = 0xffffffff; | |
484 | pbp->endmem = 0; | |
485 | pbp->end_loadmem = 0; | |
486 | pbp->start_nonloadmem = 0xffffffff; | |
487 | ||
488 | /* In case we're ever used for something other than ELF, use the | |
489 | generic method. */ | |
490 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) | |
491 | { | |
492 | bfd_map_over_sections (abfd, get_progbounds_iterator, pbp); | |
493 | return; | |
494 | } | |
495 | ||
496 | phdr = elf_tdata (abfd)->phdr; | |
497 | n_hdrs = elf_elfheader (abfd)->e_phnum; | |
498 | ||
499 | /* We're only interested in PT_LOAD; all necessary information | |
500 | should be covered by that. */ | |
501 | for (i = 0; i < n_hdrs; i++) | |
502 | { | |
503 | if (phdr[i].p_type != PT_LOAD) | |
504 | continue; | |
505 | ||
506 | if (phdr[i].p_paddr < pbp->startmem) | |
507 | pbp->startmem = phdr[i].p_paddr; | |
508 | ||
509 | if (phdr[i].p_paddr + phdr[i].p_memsz > pbp->endmem) | |
510 | pbp->endmem = phdr[i].p_paddr + phdr[i].p_memsz; | |
511 | ||
512 | if (phdr[i].p_paddr + phdr[i].p_filesz > pbp->end_loadmem) | |
513 | pbp->end_loadmem = phdr[i].p_paddr + phdr[i].p_filesz; | |
514 | ||
515 | if (phdr[i].p_memsz > phdr[i].p_filesz | |
516 | && phdr[i].p_paddr + phdr[i].p_filesz < pbp->start_nonloadmem) | |
517 | pbp->start_nonloadmem = phdr[i].p_paddr + phdr[i].p_filesz; | |
518 | } | |
519 | } | |
520 | ||
521 | /* Parameter communication by static variables, hmm... Oh well, for | |
522 | simplicity. */ | |
523 | static bfd_vma exec_load_addr; | |
524 | static bfd_vma interp_load_addr; | |
525 | static bfd_vma interp_start_addr; | |
526 | ||
527 | /* Supposed to mimic Linux' "NEW_AUX_ENT (AT_PHDR, load_addr + exec->e_phoff)". */ | |
528 | ||
529 | static USI | |
530 | aux_ent_phdr (struct bfd *ebfd) | |
531 | { | |
532 | return elf_elfheader (ebfd)->e_phoff + exec_load_addr; | |
533 | } | |
534 | ||
535 | /* We just pass on the header info; we don't have our own idea of the | |
536 | program header entry size. */ | |
537 | ||
538 | static USI | |
539 | aux_ent_phent (struct bfd *ebfd) | |
540 | { | |
541 | return elf_elfheader (ebfd)->e_phentsize; | |
542 | } | |
543 | ||
544 | /* Like "NEW_AUX_ENT(AT_PHNUM, exec->e_phnum)". */ | |
545 | ||
546 | static USI | |
547 | aux_ent_phnum (struct bfd *ebfd) | |
548 | { | |
549 | return elf_elfheader (ebfd)->e_phnum; | |
550 | } | |
551 | ||
552 | /* Like "NEW_AUX_ENT(AT_BASE, interp_load_addr)". */ | |
553 | ||
554 | static USI | |
555 | aux_ent_base (struct bfd *ebfd) | |
556 | { | |
557 | return interp_load_addr; | |
558 | } | |
559 | ||
560 | /* Like "NEW_AUX_ENT(AT_ENTRY, exec->e_entry)". */ | |
561 | ||
562 | static USI | |
563 | aux_ent_entry (struct bfd *ebfd) | |
564 | { | |
565 | ASSERT (elf_elfheader (ebfd)->e_entry == bfd_get_start_address (ebfd)); | |
566 | return elf_elfheader (ebfd)->e_entry; | |
567 | } | |
568 | ||
569 | /* Helper for cris_handle_interpreter: like sim_write, but load at | |
570 | interp_load_addr offset. */ | |
571 | ||
572 | static int | |
573 | cris_write_interp (SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length) | |
574 | { | |
575 | return sim_write (sd, mem + interp_load_addr, buf, length); | |
576 | } | |
577 | ||
578 | /* Cater to the presence of an interpreter: load it and set | |
579 | interp_start_addr. Return FALSE if there was an error, TRUE if | |
580 | everything went fine, including an interpreter being absent and | |
581 | the program being in a non-ELF format. */ | |
582 | ||
583 | static bfd_boolean | |
584 | cris_handle_interpreter (SIM_DESC sd, struct bfd *abfd) | |
585 | { | |
586 | int i, n_hdrs; | |
587 | bfd_vma phaddr; | |
588 | bfd_byte buf[4]; | |
589 | char *interp = NULL; | |
590 | struct bfd *ibfd; | |
591 | bfd_boolean ok = FALSE; | |
592 | Elf_Internal_Phdr *phdr; | |
593 | ||
594 | if (bfd_get_flavour (abfd) != bfd_target_elf_flavour) | |
595 | return TRUE; | |
596 | ||
597 | phdr = elf_tdata (abfd)->phdr; | |
598 | n_hdrs = aux_ent_phnum (abfd); | |
599 | ||
600 | /* Check the program headers for presence of an interpreter. */ | |
601 | for (i = 0; i < n_hdrs; i++) | |
602 | { | |
603 | int interplen; | |
604 | bfd_size_type interpsiz, interp_filesiz; | |
605 | struct progbounds interp_bounds; | |
606 | ||
607 | if (phdr[i].p_type != PT_INTERP) | |
608 | continue; | |
609 | ||
610 | /* Get the name of the interpreter, prepended with the sysroot | |
611 | (empty if absent). */ | |
612 | interplen = phdr[i].p_filesz; | |
613 | interp = xmalloc (interplen + strlen (simulator_sysroot)); | |
614 | strcpy (interp, simulator_sysroot); | |
615 | ||
616 | /* Read in the name. */ | |
617 | if (bfd_seek (abfd, phdr[i].p_offset, SEEK_SET) != 0 | |
618 | || (bfd_bread (interp + strlen (simulator_sysroot), interplen, abfd) | |
619 | != interplen)) | |
620 | goto interpname_failed; | |
621 | ||
622 | /* Like Linux, require the string to be 0-terminated. */ | |
623 | if (interp[interplen + strlen (simulator_sysroot) - 1] != 0) | |
624 | goto interpname_failed; | |
625 | ||
626 | /* Inspect the interpreter. */ | |
627 | ibfd = bfd_openr (interp, STATE_TARGET (sd)); | |
628 | if (ibfd == NULL) | |
629 | goto interpname_failed; | |
630 | ||
c10b3605 | 631 | /* The interpreter is at least something readable to BFD; make |
80e5c09e HPN |
632 | sure it's an ELF non-archive file. */ |
633 | if (!bfd_check_format (ibfd, bfd_object) | |
634 | || bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
635 | goto interp_failed; | |
636 | ||
637 | /* Check the layout of the interpreter. */ | |
638 | cris_get_progbounds (ibfd, &interp_bounds); | |
639 | ||
640 | /* Round down to pagesize the start page and up the endpage. | |
641 | Don't round the *load and *nonload members. */ | |
642 | interp_bounds.startmem &= ~8191; | |
643 | interp_bounds.endmem = (interp_bounds.endmem + 8191) & ~8191; | |
644 | ||
645 | /* Until we need a more dynamic solution, assume we can put the | |
646 | interpreter at this fixed location. NB: this is not what | |
647 | happens for Linux 2008-12-28, but it could and might and | |
648 | perhaps should. */ | |
649 | interp_load_addr = 0x40000; | |
650 | interpsiz = interp_bounds.endmem - interp_bounds.startmem; | |
651 | interp_filesiz = interp_bounds.end_loadmem - interp_bounds.startmem; | |
652 | ||
653 | /* If we have a non-DSO or interpreter starting at the wrong | |
654 | address, bail. */ | |
655 | if (interp_bounds.startmem != 0 | |
656 | || interpsiz + interp_load_addr >= exec_load_addr) | |
657 | goto interp_failed; | |
658 | ||
659 | /* We don't have the API to get the address of a simulator | |
660 | memory area, so we go via a temporary area. Luckily, the | |
661 | interpreter is supposed to be small, less than 0x40000 | |
662 | bytes. */ | |
663 | sim_do_commandf (sd, "memory region 0x%lx,0x%lx", | |
664 | interp_load_addr, interpsiz); | |
665 | ||
666 | /* Now that memory for the interpreter is defined, load it. */ | |
667 | if (!cris_load_elf_file (sd, ibfd, cris_write_interp)) | |
668 | goto interp_failed; | |
669 | ||
670 | /* It's no use setting STATE_START_ADDR, because it gets | |
671 | overwritten by a sim_analyze_program call in sim_load. Let's | |
672 | just store it locally. */ | |
673 | interp_start_addr | |
674 | = (bfd_get_start_address (ibfd) | |
675 | - interp_bounds.startmem + interp_load_addr); | |
676 | ||
677 | /* Linux cares only about the first PT_INTERP, so let's ignore | |
678 | the rest. */ | |
679 | goto all_done; | |
f6bcefef | 680 | } |
80e5c09e HPN |
681 | |
682 | /* Register R10 should hold 0 at static start (no finifunc), but | |
683 | that's the default, so don't bother. */ | |
684 | return TRUE; | |
685 | ||
686 | all_done: | |
687 | ok = TRUE; | |
688 | ||
689 | interp_failed: | |
690 | bfd_close (ibfd); | |
691 | ||
692 | interpname_failed: | |
693 | if (!ok) | |
694 | sim_io_eprintf (sd, | |
695 | "%s: could not load ELF interpreter `%s' for program `%s'\n", | |
696 | STATE_MY_NAME (sd), | |
697 | interp == NULL ? "(what's-its-name)" : interp, | |
698 | bfd_get_filename (abfd)); | |
699 | free (interp); | |
700 | return ok; | |
f6bcefef HPN |
701 | } |
702 | ||
703 | /* Create an instance of the simulator. */ | |
704 | ||
705 | SIM_DESC | |
706 | sim_open (SIM_OPEN_KIND kind, host_callback *callback, struct bfd *abfd, | |
707 | char **argv) | |
708 | { | |
709 | char c; | |
710 | int i; | |
711 | USI startmem = 0; | |
712 | USI endmem = CRIS_DEFAULT_MEM_SIZE; | |
713 | USI endbrk = endmem; | |
714 | USI stack_low = 0; | |
715 | SIM_DESC sd = sim_state_alloc (kind, callback); | |
716 | ||
80e5c09e HPN |
717 | static const struct auxv_entries_s |
718 | { | |
719 | bfd_byte id; | |
720 | USI (*efn) (struct bfd *ebfd); | |
721 | USI val; | |
722 | } auxv_entries[] = | |
723 | { | |
a3d4b83b HPN |
724 | #define AUX_ENT(a, b) {a, NULL, b} |
725 | #define AUX_ENTF(a, f) {a, f, 0} | |
80e5c09e HPN |
726 | AUX_ENT (AT_HWCAP, 0), |
727 | AUX_ENT (AT_PAGESZ, 8192), | |
728 | AUX_ENT (AT_CLKTCK, 100), | |
a3d4b83b HPN |
729 | AUX_ENTF (AT_PHDR, aux_ent_phdr), |
730 | AUX_ENTF (AT_PHENT, aux_ent_phent), | |
731 | AUX_ENTF (AT_PHNUM, aux_ent_phnum), | |
732 | AUX_ENTF (AT_BASE, aux_ent_base), | |
80e5c09e | 733 | AUX_ENT (AT_FLAGS, 0), |
a3d4b83b | 734 | AUX_ENTF (AT_ENTRY, aux_ent_entry), |
80e5c09e HPN |
735 | |
736 | /* Or is root better? Maybe have it settable? */ | |
737 | AUX_ENT (AT_UID, 500), | |
738 | AUX_ENT (AT_EUID, 500), | |
739 | AUX_ENT (AT_GID, 500), | |
740 | AUX_ENT (AT_EGID, 500), | |
a3d4b83b | 741 | AUX_ENT (AT_SECURE, 0), |
80e5c09e HPN |
742 | AUX_ENT (AT_NULL, 0) |
743 | }; | |
744 | ||
f6bcefef HPN |
745 | /* Can't initialize to "" below. It's either a GCC bug in old |
746 | releases (up to and including 2.95.3 (.4 in debian) or a bug in the | |
747 | standard ;-) that the rest of the elements won't be initialized. */ | |
748 | bfd_byte sp_init[4] = {0, 0, 0, 0}; | |
749 | ||
750 | /* The cpu data is kept in a separately allocated chunk of memory. */ | |
751 | if (sim_cpu_alloc_all (sd, 1, cgen_cpu_max_extra_bytes ()) != SIM_RC_OK) | |
752 | { | |
753 | free_state (sd); | |
754 | return 0; | |
755 | } | |
756 | ||
757 | if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) | |
758 | { | |
759 | free_state (sd); | |
760 | return 0; | |
761 | } | |
762 | ||
763 | /* getopt will print the error message so we just have to exit if this fails. | |
764 | FIXME: Hmmm... in the case of gdb we need getopt to call | |
765 | print_filtered. */ | |
766 | if (sim_parse_args (sd, argv) != SIM_RC_OK) | |
767 | { | |
768 | free_state (sd); | |
769 | return 0; | |
770 | } | |
771 | ||
772 | /* If we have a binary program, endianness-setting would not be taken | |
773 | from elsewhere unfortunately, so set it here. At the time of this | |
774 | writing, it isn't used until sim_config, but that might change so | |
775 | set it here before memory is defined or touched. */ | |
776 | current_target_byte_order = LITTLE_ENDIAN; | |
777 | ||
778 | /* check for/establish the reference program image */ | |
779 | if (sim_analyze_program (sd, | |
780 | (STATE_PROG_ARGV (sd) != NULL | |
781 | ? *STATE_PROG_ARGV (sd) | |
782 | : NULL), | |
783 | abfd) != SIM_RC_OK) | |
784 | { | |
a0956358 HPN |
785 | /* When there's an error, sim_analyze_program has already output |
786 | a message. Let's just clarify it, as "not an object file" | |
787 | perhaps doesn't ring a bell. */ | |
788 | sim_io_eprintf (sd, "(not a CRIS program)\n"); | |
80e5c09e HPN |
789 | free_state (sd); |
790 | return 0; | |
791 | } | |
792 | ||
793 | /* We might get called with the caller expecting us to get hold of | |
794 | the bfd for ourselves, which would happen at the | |
795 | sim_analyze_program call above. */ | |
796 | if (abfd == NULL) | |
797 | abfd = STATE_PROG_BFD (sd); | |
798 | ||
c10b3605 HPN |
799 | /* Adjust the addresses of the program at this point. Unfortunately |
800 | this does not affect ELF program headers, so we have to handle | |
801 | that separately. */ | |
802 | cris_offset_sections (sd, cris_program_offset); | |
803 | ||
804 | if (abfd != NULL && bfd_get_arch (abfd) == bfd_arch_unknown) | |
80e5c09e HPN |
805 | { |
806 | if (STATE_PROG_ARGV (sd) != NULL) | |
a0956358 | 807 | sim_io_eprintf (sd, "%s: `%s' is not a CRIS program\n", |
80e5c09e HPN |
808 | STATE_MY_NAME (sd), *STATE_PROG_ARGV (sd)); |
809 | else | |
810 | sim_io_eprintf (sd, "%s: program to be run is not a CRIS program\n", | |
811 | STATE_MY_NAME (sd)); | |
f6bcefef HPN |
812 | free_state (sd); |
813 | return 0; | |
814 | } | |
815 | ||
816 | /* For CRIS simulator-specific use, we need to find out the bounds of | |
817 | the program as well, which is not done by sim_analyze_program | |
818 | above. */ | |
80e5c09e | 819 | if (abfd != NULL) |
f6bcefef HPN |
820 | { |
821 | struct progbounds pb; | |
822 | ||
823 | /* The sections should now be accessible using bfd functions. */ | |
80e5c09e | 824 | cris_get_progbounds (abfd, &pb); |
f6bcefef HPN |
825 | |
826 | /* We align the area that the program uses to page boundaries. */ | |
827 | startmem = pb.startmem & ~8191; | |
828 | endbrk = pb.endmem; | |
829 | endmem = (endbrk + 8191) & ~8191; | |
830 | } | |
831 | ||
832 | /* Find out how much room is needed for the environment and argv, create | |
833 | that memory and fill it. Only do this when there's a program | |
834 | specified. */ | |
80e5c09e | 835 | if (abfd != NULL && !cris_bare_iron) |
f6bcefef | 836 | { |
80e5c09e | 837 | char *name = bfd_get_filename (abfd); |
f6bcefef HPN |
838 | char **my_environ = GET_ENVIRON (); |
839 | /* We use these maps to give the same behavior as the old xsim | |
840 | simulator. */ | |
841 | USI envtop = 0x40000000; | |
842 | USI stacktop = 0x3e000000; | |
843 | USI envstart; | |
844 | int envc; | |
845 | int len = strlen (name) + 1; | |
846 | USI epp, epp0; | |
847 | USI stacklen; | |
848 | int i; | |
849 | char **prog_argv = STATE_PROG_ARGV (sd); | |
850 | int my_argc = 0; | |
851 | /* All CPU:s have the same memory map, apparently. */ | |
852 | SIM_CPU *cpu = STATE_CPU (sd, 0); | |
853 | USI csp; | |
854 | bfd_byte buf[4]; | |
855 | ||
856 | /* Count in the environment as well. */ | |
857 | for (envc = 0; my_environ[envc] != NULL; envc++) | |
858 | len += strlen (my_environ[envc]) + 1; | |
859 | ||
860 | for (i = 0; prog_argv[i] != NULL; my_argc++, i++) | |
861 | len += strlen (prog_argv[i]) + 1; | |
862 | ||
863 | envstart = (envtop - len) & ~8191; | |
864 | ||
865 | /* Create read-only block for the environment strings. */ | |
866 | sim_core_attach (sd, NULL, 0, access_read, 0, | |
867 | envstart, (len + 8191) & ~8191, | |
868 | 0, NULL, NULL); | |
869 | ||
870 | /* This shouldn't happen. */ | |
871 | if (envstart < stacktop) | |
872 | stacktop = envstart - 64 * 8192; | |
873 | ||
874 | csp = stacktop; | |
875 | ||
876 | /* Note that the linux kernel does not correctly compute the storage | |
877 | needs for the static-exe AUX vector. */ | |
80e5c09e HPN |
878 | |
879 | csp -= sizeof (auxv_entries) / sizeof (auxv_entries[0]) * 4 * 2; | |
f6bcefef HPN |
880 | |
881 | csp -= (envc + 1) * 4; | |
882 | csp -= (my_argc + 1) * 4; | |
883 | csp -= 4; | |
884 | ||
885 | /* Write the target representation of the start-up-value for the | |
886 | stack-pointer suitable for register initialization below. */ | |
887 | bfd_putl32 (csp, sp_init); | |
888 | ||
889 | /* If we make this 1M higher; say 8192*1024, we have to take | |
890 | special precautions for pthreads, because pthreads assumes that | |
891 | the memory that low isn't mmapped, and that it can mmap it | |
892 | without fallback in case of failure (and we fail ungracefully | |
893 | long before *that*: the memory isn't accounted for in our mmap | |
894 | list). */ | |
895 | stack_low = (csp - (7168*1024)) & ~8191; | |
896 | ||
897 | stacklen = stacktop - stack_low; | |
898 | ||
899 | /* Tee hee, we have an executable stack. Well, it's necessary to | |
900 | test GCC trampolines... */ | |
901 | sim_core_attach (sd, NULL, 0, access_read_write_exec, 0, | |
902 | stack_low, stacklen, | |
903 | 0, NULL, NULL); | |
904 | ||
905 | epp = epp0 = envstart; | |
906 | ||
907 | /* Can't use sim_core_write_unaligned_4 without everything | |
908 | initialized when tracing, and then these writes would get into | |
909 | the trace. */ | |
910 | #define write_dword(addr, data) \ | |
911 | do \ | |
912 | { \ | |
913 | USI data_ = data; \ | |
914 | USI addr_ = addr; \ | |
915 | bfd_putl32 (data_, buf); \ | |
916 | if (sim_core_write_buffer (sd, cpu, 0, buf, addr_, 4) != 4) \ | |
917 | goto abandon_chip; \ | |
918 | } \ | |
919 | while (0) | |
920 | ||
921 | write_dword (csp, my_argc); | |
922 | csp += 4; | |
923 | ||
924 | for (i = 0; i < my_argc; i++, csp += 4) | |
925 | { | |
926 | size_t strln = strlen (prog_argv[i]) + 1; | |
927 | ||
928 | if (sim_core_write_buffer (sd, cpu, 0, prog_argv[i], epp, strln) | |
929 | != strln) | |
930 | goto abandon_chip; | |
931 | ||
932 | write_dword (csp, envstart + epp - epp0); | |
933 | epp += strln; | |
934 | } | |
935 | ||
936 | write_dword (csp, 0); | |
937 | csp += 4; | |
938 | ||
939 | for (i = 0; i < envc; i++, csp += 4) | |
940 | { | |
941 | unsigned int strln = strlen (my_environ[i]) + 1; | |
942 | ||
943 | if (sim_core_write_buffer (sd, cpu, 0, my_environ[i], epp, strln) | |
944 | != strln) | |
945 | goto abandon_chip; | |
946 | ||
947 | write_dword (csp, envstart + epp - epp0); | |
948 | epp += strln; | |
949 | } | |
950 | ||
951 | write_dword (csp, 0); | |
952 | csp += 4; | |
953 | ||
80e5c09e HPN |
954 | /* The load address of the executable could presumably be |
955 | different than the lowest used memory address, but let's | |
956 | stick to simplicity until needed. And | |
957 | cris_handle_interpreter might change startmem and endmem, so | |
958 | let's set it now. */ | |
959 | exec_load_addr = startmem; | |
f6bcefef | 960 | |
80e5c09e HPN |
961 | if (!cris_handle_interpreter (sd, abfd)) |
962 | goto abandon_chip; | |
f6bcefef | 963 | |
80e5c09e HPN |
964 | if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
965 | for (i = 0; i < sizeof (auxv_entries) / sizeof (auxv_entries[0]); i++) | |
966 | { | |
967 | write_dword (csp, auxv_entries[i].id); | |
968 | write_dword (csp + 4, | |
969 | auxv_entries[i].efn != NULL | |
970 | ? (*auxv_entries[i].efn) (abfd) | |
971 | : auxv_entries[i].val); | |
972 | csp += 4 + 4; | |
973 | } | |
f6bcefef HPN |
974 | } |
975 | ||
976 | /* Allocate core managed memory if none specified by user. */ | |
977 | if (sim_core_read_buffer (sd, NULL, read_map, &c, startmem, 1) == 0) | |
978 | sim_do_commandf (sd, "memory region 0x%lx,0x%lx", startmem, | |
979 | endmem - startmem); | |
980 | ||
981 | /* Allocate simulator I/O managed memory if none specified by user. */ | |
982 | if (cris_have_900000xxif) | |
983 | { | |
984 | if (sim_core_read_buffer (sd, NULL, read_map, &c, 0x90000000, 1) == 0) | |
985 | sim_core_attach (sd, NULL, 0, access_write, 0, 0x90000000, 0x100, | |
986 | 0, &cris_devices, NULL); | |
987 | else | |
988 | { | |
989 | (*callback-> | |
990 | printf_filtered) (callback, | |
991 | "Seeing --cris-900000xx with memory defined there\n"); | |
992 | goto abandon_chip; | |
993 | } | |
994 | } | |
995 | ||
996 | /* Establish any remaining configuration options. */ | |
997 | if (sim_config (sd) != SIM_RC_OK) | |
998 | { | |
999 | abandon_chip: | |
1000 | free_state (sd); | |
1001 | return 0; | |
1002 | } | |
1003 | ||
1004 | if (sim_post_argv_init (sd) != SIM_RC_OK) | |
1005 | { | |
1006 | free_state (sd); | |
1007 | return 0; | |
1008 | } | |
1009 | ||
1010 | /* Open a copy of the cpu descriptor table. */ | |
1011 | { | |
1012 | CGEN_CPU_DESC cd = cris_cgen_cpu_open_1 (STATE_ARCHITECTURE (sd)->printable_name, | |
1013 | CGEN_ENDIAN_LITTLE); | |
1014 | for (i = 0; i < MAX_NR_PROCESSORS; ++i) | |
1015 | { | |
1016 | SIM_CPU *cpu = STATE_CPU (sd, i); | |
1017 | CPU_CPU_DESC (cpu) = cd; | |
1018 | CPU_DISASSEMBLER (cpu) = cris_disassemble_insn; | |
1019 | ||
1020 | /* See cris_option_handler for the reason why this is needed. */ | |
1021 | CPU_CRIS_MISC_PROFILE (cpu)->flags = STATE_TRACE_FLAGS (sd)[0]; | |
1022 | ||
1023 | /* Set SP to the stack we allocated above. */ | |
1024 | (* CPU_REG_STORE (cpu)) (cpu, H_GR_SP, (char *) sp_init, 4); | |
1025 | ||
1026 | /* Set the simulator environment data. */ | |
1027 | cpu->highest_mmapped_page = NULL; | |
1028 | cpu->endmem = endmem; | |
1029 | cpu->endbrk = endbrk; | |
1030 | cpu->stack_low = stack_low; | |
1031 | cpu->syscalls = 0; | |
1032 | cpu->m1threads = 0; | |
1033 | cpu->threadno = 0; | |
1034 | cpu->max_threadid = 0; | |
1035 | cpu->thread_data = NULL; | |
1036 | memset (cpu->sighandler, 0, sizeof (cpu->sighandler)); | |
1037 | cpu->make_thread_cpu_data = NULL; | |
1038 | cpu->thread_cpu_data_size = 0; | |
aad3b3cb HPN |
1039 | #if WITH_HW |
1040 | cpu->deliver_interrupt = NULL; | |
1041 | #endif | |
f6bcefef | 1042 | } |
aad3b3cb HPN |
1043 | #if WITH_HW |
1044 | /* Always be cycle-accurate and call before/after functions if | |
1045 | with-hardware. */ | |
1046 | sim_profile_set_option (sd, "-model", PROFILE_MODEL_IDX, "on"); | |
1047 | #endif | |
f6bcefef HPN |
1048 | } |
1049 | ||
1050 | /* Initialize various cgen things not done by common framework. | |
1051 | Must be done after cris_cgen_cpu_open. */ | |
1052 | cgen_init (sd); | |
1053 | ||
1054 | /* Store in a global so things like cris_dump_regs can be invoked | |
1055 | from the gdb command line. */ | |
1056 | current_state = sd; | |
1057 | ||
1058 | cris_set_callbacks (callback); | |
1059 | ||
1060 | return sd; | |
1061 | } | |
1062 | ||
1063 | void | |
1064 | sim_close (SIM_DESC sd, int quitting ATTRIBUTE_UNUSED) | |
1065 | { | |
1066 | cris_cgen_cpu_close (CPU_CPU_DESC (STATE_CPU (sd, 0))); | |
1067 | sim_module_uninstall (sd); | |
1068 | } | |
1069 | \f | |
1070 | SIM_RC | |
1071 | sim_create_inferior (SIM_DESC sd, struct bfd *abfd, | |
1072 | char **argv ATTRIBUTE_UNUSED, | |
1073 | char **envp ATTRIBUTE_UNUSED) | |
1074 | { | |
1075 | SIM_CPU *current_cpu = STATE_CPU (sd, 0); | |
1076 | SIM_ADDR addr; | |
1077 | ||
80e5c09e | 1078 | if (sd != NULL) |
c10b3605 HPN |
1079 | addr = cris_start_address != (SIM_ADDR) -1 |
1080 | ? cris_start_address | |
1081 | : (interp_start_addr != 0 | |
1082 | ? interp_start_addr | |
1083 | : bfd_get_start_address (abfd)); | |
f6bcefef HPN |
1084 | else |
1085 | addr = 0; | |
1086 | sim_pc_set (current_cpu, addr); | |
1087 | ||
1088 | /* Other simulators have #if 0:d code that says | |
1089 | STATE_ARGV (sd) = sim_copy_argv (argv); | |
1090 | STATE_ENVP (sd) = sim_copy_argv (envp); | |
1091 | Enabling that gives you not-found link-errors for sim_copy_argv. | |
1092 | FIXME: Do archaeology to find out more. */ | |
1093 | ||
1094 | return SIM_RC_OK; | |
1095 | } | |
f6bcefef HPN |
1096 | \f |
1097 | /* Disassemble an instruction. */ | |
1098 | ||
1099 | static void | |
1100 | cris_disassemble_insn (SIM_CPU *cpu, | |
1101 | const CGEN_INSN *insn ATTRIBUTE_UNUSED, | |
1102 | const ARGBUF *abuf ATTRIBUTE_UNUSED, | |
1103 | IADDR pc, char *buf) | |
1104 | { | |
1105 | disassembler_ftype pinsn; | |
1106 | struct disassemble_info disasm_info; | |
1107 | SFILE sfile; | |
1108 | SIM_DESC sd = CPU_STATE (cpu); | |
1109 | ||
1110 | sfile.buffer = sfile.current = buf; | |
1111 | INIT_DISASSEMBLE_INFO (disasm_info, (FILE *) &sfile, | |
1112 | (fprintf_ftype) sim_disasm_sprintf); | |
80e5c09e HPN |
1113 | disasm_info.endian = BFD_ENDIAN_LITTLE; |
1114 | disasm_info.read_memory_func = sim_disasm_read_memory; | |
f6bcefef HPN |
1115 | disasm_info.memory_error_func = sim_disasm_perror_memory; |
1116 | disasm_info.application_data = (PTR) cpu; | |
1117 | pinsn = cris_get_disassembler (STATE_PROG_BFD (sd)); | |
1118 | (*pinsn) (pc, &disasm_info); | |
1119 | } |