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Commit | Line | Data |
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ef016f83 MF |
1 | /* Simulator for Analog Devices Blackfin processors. |
2 | ||
1d506c26 | 3 | Copyright (C) 2005-2024 Free Software Foundation, Inc. |
ef016f83 MF |
4 | Contributed by Analog Devices, Inc. |
5 | ||
6 | This file is part of simulators. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
20 | ||
6df01ab8 MF |
21 | /* This must come before any other includes. */ |
22 | #include "defs.h" | |
ef016f83 MF |
23 | |
24 | #include <stdio.h> | |
25 | #include <stdlib.h> | |
26 | #include <string.h> | |
27 | #include <signal.h> | |
28 | #include <errno.h> | |
29 | #include <fcntl.h> | |
30 | #include <unistd.h> | |
31 | #include <sys/time.h> | |
32 | ||
ad9cc209 | 33 | #include "portability.h" |
df68e12b | 34 | #include "sim/callback.h" |
ef016f83 MF |
35 | #include "gdb/signals.h" |
36 | #include "sim-main.h" | |
21836669 | 37 | #include "sim-options.h" |
61a0c964 | 38 | #include "sim-syscall.h" |
ef016f83 MF |
39 | #include "sim-hw.h" |
40 | ||
21836669 MF |
41 | #include "bfin-sim.h" |
42 | ||
aaa9dc01 MF |
43 | /* The numbers here do not matter. They just need to be unique. They also |
44 | need not be static across releases -- they're used internally only. The | |
45 | mapping from the Linux ABI to the CB values is in linux-targ-map.h. */ | |
ef016f83 MF |
46 | #define CB_SYS_ioctl 201 |
47 | #define CB_SYS_mmap2 202 | |
48 | #define CB_SYS_munmap 203 | |
49 | #define CB_SYS_dup2 204 | |
50 | #define CB_SYS_getuid 205 | |
51 | #define CB_SYS_getuid32 206 | |
52 | #define CB_SYS_getgid 207 | |
53 | #define CB_SYS_getgid32 208 | |
54 | #define CB_SYS_setuid 209 | |
55 | #define CB_SYS_setuid32 210 | |
56 | #define CB_SYS_setgid 211 | |
57 | #define CB_SYS_setgid32 212 | |
58 | #define CB_SYS_pread 213 | |
59 | #define CB_SYS__llseek 214 | |
60 | #define CB_SYS_getcwd 215 | |
61 | #define CB_SYS_stat64 216 | |
62 | #define CB_SYS_lstat64 217 | |
63 | #define CB_SYS_fstat64 218 | |
64 | #define CB_SYS_ftruncate64 219 | |
65 | #define CB_SYS_gettimeofday 220 | |
66 | #define CB_SYS_access 221 | |
67 | #include "linux-targ-map.h" | |
68 | #include "linux-fixed-code.h" | |
69 | ||
70 | #include "elf/common.h" | |
71 | #include "elf/external.h" | |
72 | #include "elf/internal.h" | |
73 | #include "elf/bfin.h" | |
c217e3d5 | 74 | #include "bfd/elf-bfd.h" |
ef016f83 MF |
75 | |
76 | #include "dv-bfin_cec.h" | |
77 | #include "dv-bfin_mmu.h" | |
78 | ||
a931db6a | 79 | static const char cb_linux_stat_map_32[] = |
ef016f83 MF |
80 | /* Linux kernel 32bit layout: */ |
81 | "st_dev,2:space,2:st_ino,4:st_mode,2:st_nlink,2:st_uid,2:st_gid,2:st_rdev,2:" | |
82 | "space,2:st_size,4:st_blksize,4:st_blocks,4:st_atime,4:st_atimensec,4:" | |
83 | "st_mtime,4:st_mtimensec,4:st_ctime,4:st_ctimensec,4:space,4:space,4"; | |
84 | /* uClibc public ABI 32bit layout: | |
85 | "st_dev,8:space,2:space,2:st_ino,4:st_mode,4:st_nlink,4:st_uid,4:st_gid,4:" | |
86 | "st_rdev,8:space,2:space,2:st_size,4:st_blksiez,4:st_blocks,4:st_atime,4:" | |
87 | "st_atimensec,4:st_mtime,4:st_mtimensec,4:st_ctime,4:st_ctimensec,4:space,4:" | |
88 | "space,4"; */ | |
a931db6a | 89 | static const char cb_linux_stat_map_64[] = |
ef016f83 MF |
90 | "st_dev,8:space,4:space,4:st_mode,4:st_nlink,4:st_uid,4:st_gid,4:st_rdev,8:" |
91 | "space,4:st_size,8:st_blksize,4:st_blocks,8:st_atime,4:st_atimensec,4:" | |
92 | "st_mtime,4:st_mtimensec,4:st_ctime,4:st_ctimensec,4:st_ino,8"; | |
a931db6a MF |
93 | static const char cb_libgloss_stat_map_32[] = |
94 | "st_dev,2:st_ino,2:st_mode,4:st_nlink,2:st_uid,2:st_gid,2:st_rdev,2:" | |
95 | "st_size,4:st_atime,4:space,4:st_mtime,4:space,4:st_ctime,4:" | |
96 | "space,4:st_blksize,4:st_blocks,4:space,8"; | |
97 | static const char *stat_map_32, *stat_map_64; | |
ef016f83 | 98 | |
ef016f83 MF |
99 | /* Simulate a monitor trap, put the result into r0 and errno into r1 |
100 | return offset by which to adjust pc. */ | |
101 | ||
102 | void | |
103 | bfin_syscall (SIM_CPU *cpu) | |
104 | { | |
105 | SIM_DESC sd = CPU_STATE (cpu); | |
ef016f83 MF |
106 | host_callback *cb = STATE_CALLBACK (sd); |
107 | bu32 args[6]; | |
108 | CB_SYSCALL sc; | |
109 | char *p; | |
cc5add8c | 110 | char _tbuf[1024 * 3], *tbuf = _tbuf, tstr[1024]; |
ef016f83 MF |
111 | int fmt_ret_hex = 0; |
112 | ||
113 | CB_SYSCALL_INIT (&sc); | |
114 | ||
115 | if (STATE_ENVIRONMENT (sd) == USER_ENVIRONMENT) | |
116 | { | |
117 | /* Linux syscall. */ | |
118 | sc.func = PREG (0); | |
119 | sc.arg1 = args[0] = DREG (0); | |
120 | sc.arg2 = args[1] = DREG (1); | |
121 | sc.arg3 = args[2] = DREG (2); | |
122 | sc.arg4 = args[3] = DREG (3); | |
bdedb2d2 MF |
123 | sc.arg5 = args[4] = DREG (4); |
124 | sc.arg6 = args[5] = DREG (5); | |
ef016f83 MF |
125 | } |
126 | else | |
127 | { | |
128 | /* libgloss syscall. */ | |
129 | sc.func = PREG (0); | |
130 | sc.arg1 = args[0] = GET_LONG (DREG (0)); | |
131 | sc.arg2 = args[1] = GET_LONG (DREG (0) + 4); | |
132 | sc.arg3 = args[2] = GET_LONG (DREG (0) + 8); | |
133 | sc.arg4 = args[3] = GET_LONG (DREG (0) + 12); | |
bdedb2d2 MF |
134 | sc.arg5 = args[4] = GET_LONG (DREG (0) + 16); |
135 | sc.arg6 = args[5] = GET_LONG (DREG (0) + 20); | |
ef016f83 | 136 | } |
845cbaa9 AM |
137 | sc.p1 = sd; |
138 | sc.p2 = cpu; | |
61a0c964 MF |
139 | sc.read_mem = sim_syscall_read_mem; |
140 | sc.write_mem = sim_syscall_write_mem; | |
ef016f83 MF |
141 | |
142 | /* Common cb_syscall() handles most functions. */ | |
143 | switch (cb_target_to_host_syscall (cb, sc.func)) | |
144 | { | |
145 | case CB_SYS_exit: | |
146 | tbuf += sprintf (tbuf, "exit(%i)", args[0]); | |
147 | sim_engine_halt (sd, cpu, NULL, PCREG, sim_exited, sc.arg1); | |
148 | ||
ef016f83 MF |
149 | case CB_SYS_gettimeofday: |
150 | { | |
151 | struct timeval _tv, *tv = &_tv; | |
152 | struct timezone _tz, *tz = &_tz; | |
153 | ||
154 | tbuf += sprintf (tbuf, "gettimeofday(%#x, %#x)", args[0], args[1]); | |
155 | ||
156 | if (sc.arg1 == 0) | |
157 | tv = NULL; | |
158 | if (sc.arg2 == 0) | |
159 | tz = NULL; | |
160 | sc.result = gettimeofday (tv, tz); | |
161 | ||
162 | if (sc.result == 0) | |
163 | { | |
164 | bu32 t; | |
165 | ||
166 | if (tv) | |
167 | { | |
168 | t = tv->tv_sec; | |
169 | sc.write_mem (cb, &sc, sc.arg1, (void *)&t, 4); | |
170 | t = tv->tv_usec; | |
171 | sc.write_mem (cb, &sc, sc.arg1 + 4, (void *)&t, 4); | |
172 | } | |
173 | ||
174 | if (sc.arg2) | |
175 | { | |
176 | t = tz->tz_minuteswest; | |
177 | sc.write_mem (cb, &sc, sc.arg1, (void *)&t, 4); | |
178 | t = tz->tz_dsttime; | |
179 | sc.write_mem (cb, &sc, sc.arg1 + 4, (void *)&t, 4); | |
180 | } | |
181 | } | |
182 | else | |
183 | goto sys_finish; | |
184 | } | |
185 | break; | |
186 | ||
187 | case CB_SYS_ioctl: | |
188 | /* XXX: hack just enough to get basic stdio w/uClibc ... */ | |
189 | tbuf += sprintf (tbuf, "ioctl(%i, %#x, %u)", args[0], args[1], args[2]); | |
190 | if (sc.arg2 == 0x5401) | |
191 | { | |
192 | sc.result = !isatty (sc.arg1); | |
193 | sc.errcode = 0; | |
194 | } | |
195 | else | |
196 | { | |
197 | sc.result = -1; | |
10d8e25c | 198 | sc.errcode = cb_host_to_target_errno (cb, EINVAL); |
ef016f83 MF |
199 | } |
200 | break; | |
201 | ||
202 | case CB_SYS_mmap2: | |
203 | { | |
204 | static bu32 heap = BFIN_DEFAULT_MEM_SIZE / 2; | |
205 | ||
206 | fmt_ret_hex = 1; | |
207 | tbuf += sprintf (tbuf, "mmap2(%#x, %u, %#x, %#x, %i, %u)", | |
208 | args[0], args[1], args[2], args[3], args[4], args[5]); | |
209 | ||
210 | sc.errcode = 0; | |
211 | ||
212 | if (sc.arg4 & 0x20 /*MAP_ANONYMOUS*/) | |
213 | /* XXX: We don't handle zeroing, but default is all zeros. */; | |
214 | else if (args[4] >= MAX_CALLBACK_FDS) | |
10d8e25c | 215 | sc.errcode = cb_host_to_target_errno (cb, ENOSYS); |
ef016f83 MF |
216 | else |
217 | { | |
9e6584c9 | 218 | #ifdef HAVE_PREAD |
ef016f83 MF |
219 | char *data = xmalloc (sc.arg2); |
220 | ||
221 | /* XXX: Should add a cb->pread. */ | |
222 | if (pread (cb->fdmap[args[4]], data, sc.arg2, args[5] << 12) == sc.arg2) | |
223 | sc.write_mem (cb, &sc, heap, data, sc.arg2); | |
224 | else | |
10d8e25c | 225 | sc.errcode = cb_host_to_target_errno (cb, EINVAL); |
ef016f83 MF |
226 | |
227 | free (data); | |
9e6584c9 | 228 | #else |
10d8e25c | 229 | sc.errcode = cb_host_to_target_errno (cb, ENOSYS); |
9e6584c9 | 230 | #endif |
ef016f83 MF |
231 | } |
232 | ||
233 | if (sc.errcode) | |
234 | { | |
235 | sc.result = -1; | |
236 | break; | |
237 | } | |
238 | ||
239 | sc.result = heap; | |
240 | heap += sc.arg2; | |
241 | /* Keep it page aligned. */ | |
0ede24f2 | 242 | heap = align_up (heap, 4096); |
ef016f83 MF |
243 | |
244 | break; | |
245 | } | |
246 | ||
247 | case CB_SYS_munmap: | |
248 | /* XXX: meh, just lie for mmap(). */ | |
249 | tbuf += sprintf (tbuf, "munmap(%#x, %u)", args[0], args[1]); | |
250 | sc.result = 0; | |
251 | break; | |
252 | ||
253 | case CB_SYS_dup2: | |
254 | tbuf += sprintf (tbuf, "dup2(%i, %i)", args[0], args[1]); | |
255 | if (sc.arg1 >= MAX_CALLBACK_FDS || sc.arg2 >= MAX_CALLBACK_FDS) | |
256 | { | |
257 | sc.result = -1; | |
10d8e25c | 258 | sc.errcode = cb_host_to_target_errno (cb, EINVAL); |
ef016f83 MF |
259 | } |
260 | else | |
261 | { | |
262 | sc.result = dup2 (cb->fdmap[sc.arg1], cb->fdmap[sc.arg2]); | |
263 | goto sys_finish; | |
264 | } | |
265 | break; | |
266 | ||
267 | case CB_SYS__llseek: | |
268 | tbuf += sprintf (tbuf, "llseek(%i, %u, %u, %#x, %u)", | |
269 | args[0], args[1], args[2], args[3], args[4]); | |
270 | sc.func = TARGET_LINUX_SYS_lseek; | |
271 | if (sc.arg2) | |
272 | { | |
273 | sc.result = -1; | |
10d8e25c | 274 | sc.errcode = cb_host_to_target_errno (cb, EINVAL); |
ef016f83 MF |
275 | } |
276 | else | |
277 | { | |
278 | sc.arg2 = sc.arg3; | |
279 | sc.arg3 = args[4]; | |
280 | cb_syscall (cb, &sc); | |
281 | if (sc.result != -1) | |
282 | { | |
283 | bu32 z = 0; | |
284 | sc.write_mem (cb, &sc, args[3], (void *)&sc.result, 4); | |
285 | sc.write_mem (cb, &sc, args[3] + 4, (void *)&z, 4); | |
286 | } | |
287 | } | |
288 | break; | |
289 | ||
290 | /* XXX: Should add a cb->pread. */ | |
291 | case CB_SYS_pread: | |
292 | tbuf += sprintf (tbuf, "pread(%i, %#x, %u, %i)", | |
293 | args[0], args[1], args[2], args[3]); | |
294 | if (sc.arg1 >= MAX_CALLBACK_FDS) | |
295 | { | |
296 | sc.result = -1; | |
10d8e25c | 297 | sc.errcode = cb_host_to_target_errno (cb, EINVAL); |
ef016f83 MF |
298 | } |
299 | else | |
300 | { | |
301 | long old_pos, read_result, read_errcode; | |
302 | ||
303 | /* Get current filepos. */ | |
304 | sc.func = TARGET_LINUX_SYS_lseek; | |
305 | sc.arg2 = 0; | |
306 | sc.arg3 = SEEK_CUR; | |
307 | cb_syscall (cb, &sc); | |
308 | if (sc.result == -1) | |
309 | break; | |
310 | old_pos = sc.result; | |
311 | ||
312 | /* Move to the new pos. */ | |
313 | sc.func = TARGET_LINUX_SYS_lseek; | |
314 | sc.arg2 = args[3]; | |
315 | sc.arg3 = SEEK_SET; | |
316 | cb_syscall (cb, &sc); | |
317 | if (sc.result == -1) | |
318 | break; | |
319 | ||
320 | /* Read the data. */ | |
321 | sc.func = TARGET_LINUX_SYS_read; | |
322 | sc.arg2 = args[1]; | |
323 | sc.arg3 = args[2]; | |
324 | cb_syscall (cb, &sc); | |
325 | read_result = sc.result; | |
326 | read_errcode = sc.errcode; | |
327 | ||
328 | /* Move back to the old pos. */ | |
329 | sc.func = TARGET_LINUX_SYS_lseek; | |
330 | sc.arg2 = old_pos; | |
331 | sc.arg3 = SEEK_SET; | |
332 | cb_syscall (cb, &sc); | |
333 | ||
334 | sc.result = read_result; | |
335 | sc.errcode = read_errcode; | |
336 | } | |
337 | break; | |
338 | ||
339 | case CB_SYS_getcwd: | |
340 | tbuf += sprintf (tbuf, "getcwd(%#x, %u)", args[0], args[1]); | |
341 | ||
342 | p = alloca (sc.arg2); | |
343 | if (getcwd (p, sc.arg2) == NULL) | |
344 | { | |
345 | sc.result = -1; | |
10d8e25c | 346 | sc.errcode = cb_host_to_target_errno (cb, EINVAL); |
ef016f83 MF |
347 | } |
348 | else | |
349 | { | |
350 | sc.write_mem (cb, &sc, sc.arg1, p, sc.arg2); | |
351 | sc.result = sc.arg1; | |
352 | } | |
353 | break; | |
354 | ||
355 | case CB_SYS_stat64: | |
cc5add8c MF |
356 | if (cb_get_string (cb, &sc, tstr, sizeof (tstr), args[0])) |
357 | strcpy (tstr, "???"); | |
358 | tbuf += sprintf (tbuf, "stat64(%#x:\"%s\", %u)", args[0], tstr, args[1]); | |
ef016f83 MF |
359 | cb->stat_map = stat_map_64; |
360 | sc.func = TARGET_LINUX_SYS_stat; | |
361 | cb_syscall (cb, &sc); | |
362 | cb->stat_map = stat_map_32; | |
363 | break; | |
364 | case CB_SYS_lstat64: | |
cc5add8c MF |
365 | if (cb_get_string (cb, &sc, tstr, sizeof (tstr), args[0])) |
366 | strcpy (tstr, "???"); | |
367 | tbuf += sprintf (tbuf, "lstat64(%#x:\"%s\", %u)", args[0], tstr, args[1]); | |
ef016f83 MF |
368 | cb->stat_map = stat_map_64; |
369 | sc.func = TARGET_LINUX_SYS_lstat; | |
370 | cb_syscall (cb, &sc); | |
371 | cb->stat_map = stat_map_32; | |
372 | break; | |
373 | case CB_SYS_fstat64: | |
374 | tbuf += sprintf (tbuf, "fstat64(%#x, %u)", args[0], args[1]); | |
375 | cb->stat_map = stat_map_64; | |
376 | sc.func = TARGET_LINUX_SYS_fstat; | |
377 | cb_syscall (cb, &sc); | |
378 | cb->stat_map = stat_map_32; | |
379 | break; | |
380 | ||
381 | case CB_SYS_ftruncate64: | |
382 | tbuf += sprintf (tbuf, "ftruncate64(%u, %u)", args[0], args[1]); | |
383 | sc.func = TARGET_LINUX_SYS_ftruncate; | |
384 | cb_syscall (cb, &sc); | |
385 | break; | |
386 | ||
387 | case CB_SYS_getuid: | |
388 | case CB_SYS_getuid32: | |
389 | tbuf += sprintf (tbuf, "getuid()"); | |
390 | sc.result = getuid (); | |
391 | goto sys_finish; | |
392 | case CB_SYS_getgid: | |
393 | case CB_SYS_getgid32: | |
394 | tbuf += sprintf (tbuf, "getgid()"); | |
395 | sc.result = getgid (); | |
396 | goto sys_finish; | |
397 | case CB_SYS_setuid: | |
398 | sc.arg1 &= 0xffff; | |
f0e2dc75 | 399 | ATTRIBUTE_FALLTHROUGH; |
ef016f83 MF |
400 | case CB_SYS_setuid32: |
401 | tbuf += sprintf (tbuf, "setuid(%u)", args[0]); | |
402 | sc.result = setuid (sc.arg1); | |
403 | goto sys_finish; | |
404 | case CB_SYS_setgid: | |
405 | sc.arg1 &= 0xffff; | |
f0e2dc75 | 406 | ATTRIBUTE_FALLTHROUGH; |
ef016f83 MF |
407 | case CB_SYS_setgid32: |
408 | tbuf += sprintf (tbuf, "setgid(%u)", args[0]); | |
409 | sc.result = setgid (sc.arg1); | |
410 | goto sys_finish; | |
411 | ||
ef016f83 MF |
412 | case CB_SYS_kill: |
413 | tbuf += sprintf (tbuf, "kill(%u, %i)", args[0], args[1]); | |
414 | /* Only let the app kill itself. */ | |
415 | if (sc.arg1 != getpid ()) | |
416 | { | |
417 | sc.result = -1; | |
10d8e25c | 418 | sc.errcode = cb_host_to_target_errno (cb, EPERM); |
ef016f83 MF |
419 | } |
420 | else | |
421 | { | |
9e6584c9 | 422 | #ifdef HAVE_KILL |
ef016f83 MF |
423 | sc.result = kill (sc.arg1, sc.arg2); |
424 | goto sys_finish; | |
9e6584c9 MF |
425 | #else |
426 | sc.result = -1; | |
10d8e25c | 427 | sc.errcode = cb_host_to_target_errno (cb, ENOSYS); |
9e6584c9 | 428 | #endif |
ef016f83 MF |
429 | } |
430 | break; | |
431 | ||
432 | case CB_SYS_open: | |
cc5add8c MF |
433 | if (cb_get_string (cb, &sc, tstr, sizeof (tstr), args[0])) |
434 | strcpy (tstr, "???"); | |
435 | tbuf += sprintf (tbuf, "open(%#x:\"%s\", %#x, %o)", | |
436 | args[0], tstr, args[1], args[2]); | |
ef016f83 MF |
437 | goto case_default; |
438 | case CB_SYS_close: | |
439 | tbuf += sprintf (tbuf, "close(%i)", args[0]); | |
440 | goto case_default; | |
441 | case CB_SYS_read: | |
442 | tbuf += sprintf (tbuf, "read(%i, %#x, %u)", args[0], args[1], args[2]); | |
443 | goto case_default; | |
444 | case CB_SYS_write: | |
cc5add8c MF |
445 | if (cb_get_string (cb, &sc, tstr, sizeof (tstr), args[1])) |
446 | strcpy (tstr, "???"); | |
447 | tbuf += sprintf (tbuf, "write(%i, %#x:\"%s\", %u)", | |
448 | args[0], args[1], tstr, args[2]); | |
ef016f83 MF |
449 | goto case_default; |
450 | case CB_SYS_lseek: | |
451 | tbuf += sprintf (tbuf, "lseek(%i, %i, %i)", args[0], args[1], args[2]); | |
452 | goto case_default; | |
453 | case CB_SYS_unlink: | |
cc5add8c MF |
454 | if (cb_get_string (cb, &sc, tstr, sizeof (tstr), args[0])) |
455 | strcpy (tstr, "???"); | |
456 | tbuf += sprintf (tbuf, "unlink(%#x:\"%s\")", args[0], tstr); | |
ef016f83 MF |
457 | goto case_default; |
458 | case CB_SYS_truncate: | |
cc5add8c MF |
459 | if (cb_get_string (cb, &sc, tstr, sizeof (tstr), args[0])) |
460 | strcpy (tstr, "???"); | |
461 | tbuf += sprintf (tbuf, "truncate(%#x:\"%s\", %i)", args[0], tstr, args[1]); | |
ef016f83 MF |
462 | goto case_default; |
463 | case CB_SYS_ftruncate: | |
464 | tbuf += sprintf (tbuf, "ftruncate(%i, %i)", args[0], args[1]); | |
465 | goto case_default; | |
466 | case CB_SYS_rename: | |
cc5add8c MF |
467 | if (cb_get_string (cb, &sc, tstr, sizeof (tstr), args[0])) |
468 | strcpy (tstr, "???"); | |
469 | tbuf += sprintf (tbuf, "rename(%#x:\"%s\", ", args[0], tstr); | |
470 | if (cb_get_string (cb, &sc, tstr, sizeof (tstr), args[1])) | |
471 | strcpy (tstr, "???"); | |
472 | tbuf += sprintf (tbuf, "%#x:\"%s\")", args[1], tstr); | |
ef016f83 MF |
473 | goto case_default; |
474 | case CB_SYS_stat: | |
cc5add8c MF |
475 | if (cb_get_string (cb, &sc, tstr, sizeof (tstr), args[0])) |
476 | strcpy (tstr, "???"); | |
477 | tbuf += sprintf (tbuf, "stat(%#x:\"%s\", %#x)", args[0], tstr, args[1]); | |
ef016f83 MF |
478 | goto case_default; |
479 | case CB_SYS_fstat: | |
480 | tbuf += sprintf (tbuf, "fstat(%i, %#x)", args[0], args[1]); | |
481 | goto case_default; | |
482 | case CB_SYS_lstat: | |
cc5add8c MF |
483 | if (cb_get_string (cb, &sc, tstr, sizeof (tstr), args[0])) |
484 | strcpy (tstr, "???"); | |
485 | tbuf += sprintf (tbuf, "lstat(%#x:\"%s\", %#x)", args[0], tstr, args[1]); | |
ef016f83 MF |
486 | goto case_default; |
487 | case CB_SYS_pipe: | |
488 | tbuf += sprintf (tbuf, "pipe(%#x, %#x)", args[0], args[1]); | |
489 | goto case_default; | |
490 | ||
491 | default: | |
492 | tbuf += sprintf (tbuf, "???_%i(%#x, %#x, %#x, %#x, %#x, %#x)", sc.func, | |
493 | args[0], args[1], args[2], args[3], args[4], args[5]); | |
494 | case_default: | |
495 | cb_syscall (cb, &sc); | |
496 | break; | |
497 | ||
498 | sys_finish: | |
499 | if (sc.result == -1) | |
500 | { | |
501 | cb->last_errno = errno; | |
502 | sc.errcode = cb->get_errno (cb); | |
503 | } | |
504 | } | |
505 | ||
506 | TRACE_EVENTS (cpu, "syscall_%i(%#x, %#x, %#x, %#x, %#x, %#x) = %li (error = %i)", | |
507 | sc.func, args[0], args[1], args[2], args[3], args[4], args[5], | |
508 | sc.result, sc.errcode); | |
509 | ||
510 | tbuf += sprintf (tbuf, " = "); | |
511 | if (STATE_ENVIRONMENT (sd) == USER_ENVIRONMENT) | |
512 | { | |
513 | if (sc.result == -1) | |
514 | { | |
515 | tbuf += sprintf (tbuf, "-1 (error = %i)", sc.errcode); | |
516 | if (sc.errcode == cb_host_to_target_errno (cb, ENOSYS)) | |
517 | { | |
518 | sim_io_eprintf (sd, "bfin-sim: %#x: unimplemented syscall %i\n", | |
519 | PCREG, sc.func); | |
520 | } | |
521 | SET_DREG (0, -sc.errcode); | |
522 | } | |
523 | else | |
524 | { | |
525 | if (fmt_ret_hex) | |
526 | tbuf += sprintf (tbuf, "%#lx", sc.result); | |
527 | else | |
528 | tbuf += sprintf (tbuf, "%lu", sc.result); | |
529 | SET_DREG (0, sc.result); | |
530 | } | |
531 | } | |
532 | else | |
533 | { | |
534 | tbuf += sprintf (tbuf, "%lu (error = %i)", sc.result, sc.errcode); | |
535 | SET_DREG (0, sc.result); | |
ce2486ab MF |
536 | SET_DREG (1, sc.result2); |
537 | SET_DREG (2, sc.errcode); | |
ef016f83 MF |
538 | } |
539 | ||
540 | TRACE_SYSCALL (cpu, "%s", _tbuf); | |
541 | } | |
542 | ||
ef016f83 MF |
543 | /* Execute a single instruction. */ |
544 | ||
545 | static sim_cia | |
546 | step_once (SIM_CPU *cpu) | |
547 | { | |
548 | SIM_DESC sd = CPU_STATE (cpu); | |
549 | bu32 insn_len, oldpc = PCREG; | |
550 | int i; | |
551 | bool ssstep; | |
552 | ||
553 | if (TRACE_ANY_P (cpu)) | |
554 | trace_prefix (sd, cpu, NULL_CIA, oldpc, TRACE_LINENUM_P (cpu), | |
555 | NULL, 0, " "); /* Use a space for gcc warnings. */ | |
556 | ||
824c8628 MF |
557 | TRACE_DISASM (cpu, oldpc); |
558 | ||
ef016f83 MF |
559 | /* Handle hardware single stepping when lower than EVT3, and when SYSCFG |
560 | has already had the SSSTEP bit enabled. */ | |
561 | ssstep = false; | |
562 | if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT | |
563 | && (SYSCFGREG & SYSCFG_SSSTEP)) | |
564 | { | |
565 | int ivg = cec_get_ivg (cpu); | |
566 | if (ivg == -1 || ivg > 3) | |
567 | ssstep = true; | |
568 | } | |
569 | ||
570 | #if 0 | |
571 | /* XXX: Is this what happens on the hardware ? */ | |
572 | if (cec_get_ivg (cpu) == EVT_EMU) | |
573 | cec_return (cpu, EVT_EMU); | |
574 | #endif | |
575 | ||
576 | BFIN_CPU_STATE.did_jump = false; | |
577 | ||
578 | insn_len = interp_insn_bfin (cpu, oldpc); | |
579 | ||
580 | /* If we executed this insn successfully, then we always decrement | |
581 | the loop counter. We don't want to update the PC though if the | |
582 | last insn happened to be a change in code flow (jump/etc...). */ | |
583 | if (!BFIN_CPU_STATE.did_jump) | |
584 | SET_PCREG (hwloop_get_next_pc (cpu, oldpc, insn_len)); | |
585 | for (i = 1; i >= 0; --i) | |
586 | if (LCREG (i) && oldpc == LBREG (i)) | |
587 | { | |
588 | SET_LCREG (i, LCREG (i) - 1); | |
589 | if (LCREG (i)) | |
590 | break; | |
591 | } | |
592 | ||
593 | ++ PROFILE_TOTAL_INSN_COUNT (CPU_PROFILE_DATA (cpu)); | |
594 | ||
595 | /* Handle hardware single stepping only if we're still lower than EVT3. | |
596 | XXX: May not be entirely correct wrt EXCPT insns. */ | |
597 | if (ssstep) | |
598 | { | |
599 | int ivg = cec_get_ivg (cpu); | |
600 | if (ivg == -1 || ivg > 3) | |
601 | { | |
602 | INSN_LEN = 0; | |
603 | cec_exception (cpu, VEC_STEP); | |
604 | } | |
605 | } | |
606 | ||
607 | return oldpc; | |
608 | } | |
609 | ||
610 | void | |
611 | sim_engine_run (SIM_DESC sd, | |
612 | int next_cpu_nr, /* ignore */ | |
613 | int nr_cpus, /* ignore */ | |
614 | int siggnal) /* ignore */ | |
615 | { | |
616 | bu32 ticks; | |
617 | SIM_CPU *cpu; | |
618 | ||
619 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
620 | ||
621 | cpu = STATE_CPU (sd, 0); | |
622 | ||
623 | while (1) | |
624 | { | |
625 | step_once (cpu); | |
626 | /* Process any events -- can't use tickn because it may | |
627 | advance right over the next event. */ | |
628 | for (ticks = 0; ticks < CYCLE_DELAY; ++ticks) | |
629 | if (sim_events_tick (sd)) | |
630 | sim_events_process (sd); | |
631 | } | |
632 | } | |
633 | ||
634 | /* Cover function of sim_state_free to free the cpu buffers as well. */ | |
635 | ||
636 | static void | |
637 | free_state (SIM_DESC sd) | |
638 | { | |
639 | if (STATE_MODULES (sd) != NULL) | |
640 | sim_module_uninstall (sd); | |
641 | sim_cpu_free_all (sd); | |
642 | sim_state_free (sd); | |
643 | } | |
644 | ||
645 | /* Create an instance of the simulator. */ | |
646 | ||
647 | static void | |
648 | bfin_initialize_cpu (SIM_DESC sd, SIM_CPU *cpu) | |
649 | { | |
ef016f83 MF |
650 | PROFILE_TOTAL_INSN_COUNT (CPU_PROFILE_DATA (cpu)) = 0; |
651 | ||
652 | bfin_model_cpu_init (sd, cpu); | |
653 | ||
654 | /* Set default stack to top of scratch pad. */ | |
655 | SET_SPREG (BFIN_DEFAULT_MEM_SIZE); | |
656 | SET_KSPREG (BFIN_DEFAULT_MEM_SIZE); | |
657 | SET_USPREG (BFIN_DEFAULT_MEM_SIZE); | |
658 | ||
659 | /* This is what the hardware likes. */ | |
660 | SET_SYSCFGREG (0x30); | |
661 | } | |
662 | ||
663 | SIM_DESC | |
664 | sim_open (SIM_OPEN_KIND kind, host_callback *callback, | |
2e3d4f4d | 665 | struct bfd *abfd, char * const *argv) |
ef016f83 MF |
666 | { |
667 | char c; | |
668 | int i; | |
85d93de3 MF |
669 | SIM_DESC sd = sim_state_alloc_extra (kind, callback, |
670 | sizeof (struct bfin_board_data)); | |
ef016f83 | 671 | |
ba307cdd | 672 | /* Set default options before parsing user options. */ |
1c636da0 | 673 | STATE_MACHS (sd) = bfin_sim_machs; |
d414eb3e | 674 | STATE_MODEL_NAME (sd) = "bf537"; |
ba307cdd | 675 | current_alignment = STRICT_ALIGNMENT; |
f9a4d543 | 676 | current_target_byte_order = BFD_ENDIAN_LITTLE; |
ba307cdd | 677 | |
ef016f83 | 678 | /* The cpu data is kept in a separately allocated chunk of memory. */ |
883be197 | 679 | if (sim_cpu_alloc_all_extra (sd, 0, sizeof (struct bfin_cpu_state)) |
6adb1071 | 680 | != SIM_RC_OK) |
ef016f83 MF |
681 | { |
682 | free_state (sd); | |
683 | return 0; | |
684 | } | |
685 | ||
ef016f83 MF |
686 | if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) |
687 | { | |
688 | free_state (sd); | |
689 | return 0; | |
690 | } | |
691 | ||
692 | /* XXX: Default to the Virtual environment. */ | |
693 | if (STATE_ENVIRONMENT (sd) == ALL_ENVIRONMENT) | |
694 | STATE_ENVIRONMENT (sd) = VIRTUAL_ENVIRONMENT; | |
695 | ||
77cf2ef5 | 696 | /* The parser will print an error message for us, so we silently return. */ |
ef016f83 MF |
697 | if (sim_parse_args (sd, argv) != SIM_RC_OK) |
698 | { | |
699 | free_state (sd); | |
700 | return 0; | |
701 | } | |
702 | ||
703 | /* Allocate external memory if none specified by user. | |
704 | Use address 4 here in case the user wanted address 0 unmapped. */ | |
705 | if (sim_core_read_buffer (sd, NULL, read_map, &c, 4, 1) == 0) | |
706 | { | |
707 | bu16 emuexcpt = 0x25; | |
f08708cb | 708 | sim_do_commandf (sd, "memory-size 0x%x", BFIN_DEFAULT_MEM_SIZE); |
5b94c380 | 709 | sim_write (sd, 0, &emuexcpt, 2); |
ef016f83 MF |
710 | } |
711 | ||
712 | /* Check for/establish the a reference program image. */ | |
e8f20a28 | 713 | if (sim_analyze_program (sd, STATE_PROG_FILE (sd), abfd) != SIM_RC_OK) |
ef016f83 MF |
714 | { |
715 | free_state (sd); | |
716 | return 0; | |
717 | } | |
718 | ||
719 | /* Establish any remaining configuration options. */ | |
720 | if (sim_config (sd) != SIM_RC_OK) | |
721 | { | |
722 | free_state (sd); | |
723 | return 0; | |
724 | } | |
725 | ||
726 | if (sim_post_argv_init (sd) != SIM_RC_OK) | |
727 | { | |
728 | free_state (sd); | |
729 | return 0; | |
730 | } | |
731 | ||
732 | /* CPU specific initialization. */ | |
733 | for (i = 0; i < MAX_NR_PROCESSORS; ++i) | |
734 | { | |
735 | SIM_CPU *cpu = STATE_CPU (sd, i); | |
736 | bfin_initialize_cpu (sd, cpu); | |
737 | } | |
738 | ||
739 | return sd; | |
740 | } | |
741 | ||
ef016f83 | 742 | /* Some utils don't like having a NULL environ. */ |
2e3d4f4d | 743 | static char * const simple_env[] = { "HOME=/", "PATH=/bin", NULL }; |
ef016f83 MF |
744 | |
745 | static bu32 fdpic_load_offset; | |
746 | ||
747 | static bool | |
748 | bfin_fdpic_load (SIM_DESC sd, SIM_CPU *cpu, struct bfd *abfd, bu32 *sp, | |
749 | bu32 *elf_addrs, char **ldso_path) | |
750 | { | |
751 | bool ret; | |
752 | int i; | |
753 | ||
754 | Elf_Internal_Ehdr *iehdr; | |
755 | Elf32_External_Ehdr ehdr; | |
756 | Elf_Internal_Phdr *phdrs; | |
757 | unsigned char *data; | |
758 | long phdr_size; | |
759 | int phdrc; | |
760 | bu32 nsegs; | |
761 | ||
762 | bu32 max_load_addr; | |
763 | ||
764 | unsigned char null[4] = { 0, 0, 0, 0 }; | |
765 | ||
766 | ret = false; | |
767 | *ldso_path = NULL; | |
768 | ||
769 | /* See if this an FDPIC ELF. */ | |
770 | phdrs = NULL; | |
771 | if (!abfd) | |
772 | goto skip_fdpic_init; | |
773 | if (bfd_seek (abfd, 0, SEEK_SET) != 0) | |
774 | goto skip_fdpic_init; | |
226f9f4f | 775 | if (bfd_read (&ehdr, sizeof (ehdr), abfd) != sizeof (ehdr)) |
ef016f83 MF |
776 | goto skip_fdpic_init; |
777 | iehdr = elf_elfheader (abfd); | |
778 | if (!(iehdr->e_flags & EF_BFIN_FDPIC)) | |
779 | goto skip_fdpic_init; | |
780 | ||
781 | if (STATE_OPEN_KIND (sd) == SIM_OPEN_DEBUG) | |
782 | sim_io_printf (sd, "Loading FDPIC ELF %s\n Load base: %#x\n ELF entry: %#x\n", | |
783 | bfd_get_filename (abfd), fdpic_load_offset, elf_addrs[0]); | |
784 | ||
785 | /* Grab the Program Headers to set up the loadsegs on the stack. */ | |
786 | phdr_size = bfd_get_elf_phdr_upper_bound (abfd); | |
787 | if (phdr_size == -1) | |
788 | goto skip_fdpic_init; | |
789 | phdrs = xmalloc (phdr_size); | |
790 | phdrc = bfd_get_elf_phdrs (abfd, phdrs); | |
791 | if (phdrc == -1) | |
792 | goto skip_fdpic_init; | |
793 | ||
794 | /* Push the Ehdr onto the stack. */ | |
795 | *sp -= sizeof (ehdr); | |
796 | elf_addrs[3] = *sp; | |
5b94c380 | 797 | sim_write (sd, *sp, &ehdr, sizeof (ehdr)); |
ef016f83 MF |
798 | if (STATE_OPEN_KIND (sd) == SIM_OPEN_DEBUG) |
799 | sim_io_printf (sd, " Elf_Ehdr: %#x\n", *sp); | |
800 | ||
801 | /* Since we're relocating things ourselves, we need to relocate | |
802 | the start address as well. */ | |
803 | elf_addrs[0] = bfd_get_start_address (abfd) + fdpic_load_offset; | |
804 | ||
805 | /* And the Exec's Phdrs onto the stack. */ | |
806 | if (STATE_PROG_BFD (sd) == abfd) | |
807 | { | |
808 | elf_addrs[4] = elf_addrs[0]; | |
809 | ||
810 | phdr_size = iehdr->e_phentsize * iehdr->e_phnum; | |
811 | if (bfd_seek (abfd, iehdr->e_phoff, SEEK_SET) != 0) | |
812 | goto skip_fdpic_init; | |
813 | data = xmalloc (phdr_size); | |
226f9f4f | 814 | if (bfd_read (data, phdr_size, abfd) != phdr_size) |
ef016f83 MF |
815 | goto skip_fdpic_init; |
816 | *sp -= phdr_size; | |
817 | elf_addrs[1] = *sp; | |
818 | elf_addrs[2] = phdrc; | |
819 | sim_write (sd, *sp, data, phdr_size); | |
820 | free (data); | |
821 | if (STATE_OPEN_KIND (sd) == SIM_OPEN_DEBUG) | |
822 | sim_io_printf (sd, " Elf_Phdrs: %#x\n", *sp); | |
823 | } | |
824 | ||
825 | /* Now push all the loadsegs. */ | |
826 | nsegs = 0; | |
827 | max_load_addr = 0; | |
828 | for (i = phdrc; i >= 0; --i) | |
829 | if (phdrs[i].p_type == PT_LOAD) | |
830 | { | |
831 | Elf_Internal_Phdr *p = &phdrs[i]; | |
832 | bu32 paddr, vaddr, memsz, filesz; | |
833 | ||
834 | paddr = p->p_paddr + fdpic_load_offset; | |
835 | vaddr = p->p_vaddr; | |
836 | memsz = p->p_memsz; | |
837 | filesz = p->p_filesz; | |
838 | ||
839 | if (STATE_OPEN_KIND (sd) == SIM_OPEN_DEBUG) | |
840 | sim_io_printf (sd, " PHDR %i: vma %#x lma %#x filesz %#x memsz %#x\n", | |
841 | i, vaddr, paddr, filesz, memsz); | |
842 | ||
843 | data = xmalloc (memsz); | |
844 | if (memsz != filesz) | |
845 | memset (data + filesz, 0, memsz - filesz); | |
846 | ||
847 | if (bfd_seek (abfd, p->p_offset, SEEK_SET) == 0 | |
226f9f4f | 848 | && bfd_read (data, filesz, abfd) == filesz) |
ef016f83 MF |
849 | sim_write (sd, paddr, data, memsz); |
850 | ||
851 | free (data); | |
852 | ||
bc273e17 | 853 | max_load_addr = max (paddr + memsz, max_load_addr); |
ef016f83 MF |
854 | |
855 | *sp -= 12; | |
5b94c380 MF |
856 | sim_write (sd, *sp+0, &paddr, 4); /* loadseg.addr */ |
857 | sim_write (sd, *sp+4, &vaddr, 4); /* loadseg.p_vaddr */ | |
858 | sim_write (sd, *sp+8, &memsz, 4); /* loadseg.p_memsz */ | |
ef016f83 MF |
859 | ++nsegs; |
860 | } | |
861 | else if (phdrs[i].p_type == PT_DYNAMIC) | |
862 | { | |
863 | elf_addrs[5] = phdrs[i].p_paddr + fdpic_load_offset; | |
864 | if (STATE_OPEN_KIND (sd) == SIM_OPEN_DEBUG) | |
865 | sim_io_printf (sd, " PT_DYNAMIC: %#x\n", elf_addrs[5]); | |
866 | } | |
867 | else if (phdrs[i].p_type == PT_INTERP) | |
868 | { | |
869 | uint32_t off = phdrs[i].p_offset; | |
870 | uint32_t len = phdrs[i].p_filesz; | |
871 | ||
872 | *ldso_path = xmalloc (len); | |
873 | if (bfd_seek (abfd, off, SEEK_SET) != 0 | |
226f9f4f | 874 | || bfd_read (*ldso_path, len, abfd) != len) |
ef016f83 MF |
875 | { |
876 | free (*ldso_path); | |
877 | *ldso_path = NULL; | |
878 | } | |
879 | else if (STATE_OPEN_KIND (sd) == SIM_OPEN_DEBUG) | |
880 | sim_io_printf (sd, " PT_INTERP: %s\n", *ldso_path); | |
881 | } | |
882 | ||
883 | /* Update the load offset with a few extra pages. */ | |
0ede24f2 MF |
884 | fdpic_load_offset = align_up (max (max_load_addr, fdpic_load_offset), |
885 | 0x10000); | |
ef016f83 MF |
886 | fdpic_load_offset += 0x10000; |
887 | ||
888 | /* Push the summary loadmap info onto the stack last. */ | |
889 | *sp -= 4; | |
890 | sim_write (sd, *sp+0, null, 2); /* loadmap.version */ | |
5b94c380 | 891 | sim_write (sd, *sp+2, &nsegs, 2); /* loadmap.nsegs */ |
ef016f83 MF |
892 | |
893 | ret = true; | |
894 | skip_fdpic_init: | |
895 | free (phdrs); | |
896 | ||
897 | return ret; | |
898 | } | |
899 | ||
900 | static void | |
901 | bfin_user_init (SIM_DESC sd, SIM_CPU *cpu, struct bfd *abfd, | |
2e3d4f4d | 902 | char * const *argv, char * const *env) |
ef016f83 MF |
903 | { |
904 | /* XXX: Missing host -> target endian ... */ | |
905 | /* Linux starts the user app with the stack: | |
906 | argc | |
907 | argv[0] -- pointers to the actual strings | |
908 | argv[1..N] | |
909 | NULL | |
910 | env[0] | |
911 | env[1..N] | |
912 | NULL | |
913 | auxvt[0].type -- ELF Auxiliary Vector Table | |
914 | auxvt[0].value | |
915 | auxvt[1..N] | |
916 | AT_NULL | |
917 | 0 | |
918 | argv[0..N][0..M] -- actual argv/env strings | |
919 | env[0..N][0..M] | |
920 | FDPIC loadmaps -- for FDPIC apps | |
921 | So set things up the same way. */ | |
922 | int i, argc, envc; | |
923 | bu32 argv_flat, env_flat; | |
924 | ||
925 | bu32 sp, sp_flat; | |
926 | ||
927 | /* start, at_phdr, at_phnum, at_base, at_entry, pt_dynamic */ | |
928 | bu32 elf_addrs[6]; | |
e4967d72 | 929 | bu32 auxvt; |
ef016f83 MF |
930 | bu32 exec_loadmap, ldso_loadmap; |
931 | char *ldso_path; | |
932 | ||
933 | unsigned char null[4] = { 0, 0, 0, 0 }; | |
934 | ||
935 | host_callback *cb = STATE_CALLBACK (sd); | |
936 | ||
937 | elf_addrs[0] = elf_addrs[4] = bfd_get_start_address (abfd); | |
938 | elf_addrs[1] = elf_addrs[2] = elf_addrs[3] = elf_addrs[5] = 0; | |
939 | ||
940 | /* Keep the load addresses consistent between runs. Also make sure we make | |
941 | space for the fixed code region (part of the Blackfin Linux ABI). */ | |
942 | fdpic_load_offset = 0x1000; | |
943 | ||
944 | /* First try to load this as an FDPIC executable. */ | |
945 | sp = SPREG; | |
946 | if (!bfin_fdpic_load (sd, cpu, STATE_PROG_BFD (sd), &sp, elf_addrs, &ldso_path)) | |
947 | goto skip_fdpic_init; | |
948 | exec_loadmap = sp; | |
949 | ||
950 | /* If that worked, then load the fixed code region. We only do this for | |
951 | FDPIC ELFs atm because they are PIEs and let us relocate them without | |
952 | manual fixups. FLAT files however require location processing which | |
953 | we do not do ourselves, and they link with a VMA of 0. */ | |
954 | sim_write (sd, 0x400, bfin_linux_fixed_code, sizeof (bfin_linux_fixed_code)); | |
955 | ||
956 | /* If the FDPIC needs an interpreter, then load it up too. */ | |
957 | if (ldso_path) | |
958 | { | |
959 | const char *ldso_full_path = concat (simulator_sysroot, ldso_path, NULL); | |
960 | struct bfd *ldso_bfd; | |
961 | ||
962 | ldso_bfd = bfd_openr (ldso_full_path, STATE_TARGET (sd)); | |
963 | if (!ldso_bfd) | |
964 | { | |
965 | sim_io_eprintf (sd, "bfin-sim: bfd open failed: %s\n", ldso_full_path); | |
966 | goto static_fdpic; | |
967 | } | |
968 | if (!bfd_check_format (ldso_bfd, bfd_object)) | |
969 | sim_io_eprintf (sd, "bfin-sim: bfd format not valid: %s\n", ldso_full_path); | |
970 | bfd_set_arch_info (ldso_bfd, STATE_ARCHITECTURE (sd)); | |
971 | ||
972 | if (!bfin_fdpic_load (sd, cpu, ldso_bfd, &sp, elf_addrs, &ldso_path)) | |
973 | sim_io_eprintf (sd, "bfin-sim: FDPIC ldso failed to load: %s\n", ldso_full_path); | |
974 | if (ldso_path) | |
975 | sim_io_eprintf (sd, "bfin-sim: FDPIC ldso (%s) needs an interpreter (%s) !?\n", | |
976 | ldso_full_path, ldso_path); | |
977 | ||
978 | ldso_loadmap = sp; | |
979 | } | |
980 | else | |
981 | static_fdpic: | |
982 | ldso_loadmap = 0; | |
983 | ||
984 | /* Finally setup the registers required by the FDPIC ABI. */ | |
985 | SET_DREG (7, 0); /* Zero out FINI funcptr -- ldso will set this up. */ | |
986 | SET_PREG (0, exec_loadmap); /* Exec loadmap addr. */ | |
987 | SET_PREG (1, ldso_loadmap); /* Interp loadmap addr. */ | |
988 | SET_PREG (2, elf_addrs[5]); /* PT_DYNAMIC map addr. */ | |
989 | ||
990 | auxvt = 1; | |
991 | SET_SPREG (sp); | |
992 | skip_fdpic_init: | |
993 | sim_pc_set (cpu, elf_addrs[0]); | |
994 | ||
995 | /* Figure out how much storage the argv/env strings need. */ | |
34fed699 | 996 | argc = countargv ((char **)argv); |
ef016f83 MF |
997 | if (argc == -1) |
998 | argc = 0; | |
999 | argv_flat = argc; /* NUL bytes */ | |
1000 | for (i = 0; i < argc; ++i) | |
1001 | argv_flat += strlen (argv[i]); | |
1002 | ||
1003 | if (!env) | |
1004 | env = simple_env; | |
34fed699 | 1005 | envc = countargv ((char **)env); |
ef016f83 MF |
1006 | env_flat = envc; /* NUL bytes */ |
1007 | for (i = 0; i < envc; ++i) | |
1008 | env_flat += strlen (env[i]); | |
1009 | ||
1010 | /* Push the Auxiliary Vector Table between argv/env and actual strings. */ | |
0ede24f2 | 1011 | sp_flat = sp = align_up (SPREG - argv_flat - env_flat - 4, 4); |
ef016f83 MF |
1012 | if (auxvt) |
1013 | { | |
1014 | # define AT_PUSH(at, val) \ | |
ef016f83 MF |
1015 | sp -= 4; \ |
1016 | auxvt = (val); \ | |
5b94c380 | 1017 | sim_write (sd, sp, &auxvt, 4); \ |
ef016f83 MF |
1018 | sp -= 4; \ |
1019 | auxvt = (at); \ | |
5b94c380 | 1020 | sim_write (sd, sp, &auxvt, 4) |
ef016f83 MF |
1021 | unsigned int egid = getegid (), gid = getgid (); |
1022 | unsigned int euid = geteuid (), uid = getuid (); | |
1023 | AT_PUSH (AT_NULL, 0); | |
1024 | AT_PUSH (AT_SECURE, egid != gid || euid != uid); | |
1025 | AT_PUSH (AT_EGID, egid); | |
1026 | AT_PUSH (AT_GID, gid); | |
1027 | AT_PUSH (AT_EUID, euid); | |
1028 | AT_PUSH (AT_UID, uid); | |
1029 | AT_PUSH (AT_ENTRY, elf_addrs[4]); | |
1030 | AT_PUSH (AT_FLAGS, 0); | |
1031 | AT_PUSH (AT_BASE, elf_addrs[3]); | |
1032 | AT_PUSH (AT_PHNUM, elf_addrs[2]); | |
1033 | AT_PUSH (AT_PHENT, sizeof (Elf32_External_Phdr)); | |
1034 | AT_PUSH (AT_PHDR, elf_addrs[1]); | |
1035 | AT_PUSH (AT_CLKTCK, 100); /* XXX: This ever not 100 ? */ | |
1036 | AT_PUSH (AT_PAGESZ, 4096); | |
1037 | AT_PUSH (AT_HWCAP, 0); | |
1038 | #undef AT_PUSH | |
1039 | } | |
1040 | SET_SPREG (sp); | |
1041 | ||
1042 | /* Push the argc/argv/env after the auxvt. */ | |
1043 | sp -= ((1 + argc + 1 + envc + 1) * 4); | |
1044 | SET_SPREG (sp); | |
1045 | ||
1046 | /* First push the argc value. */ | |
5b94c380 | 1047 | sim_write (sd, sp, &argc, 4); |
ef016f83 MF |
1048 | sp += 4; |
1049 | ||
1050 | /* Then the actual argv strings so we know where to point argv[]. */ | |
1051 | for (i = 0; i < argc; ++i) | |
1052 | { | |
1053 | unsigned len = strlen (argv[i]) + 1; | |
5b94c380 MF |
1054 | sim_write (sd, sp_flat, argv[i], len); |
1055 | sim_write (sd, sp, &sp_flat, 4); | |
ef016f83 MF |
1056 | sp_flat += len; |
1057 | sp += 4; | |
1058 | } | |
1059 | sim_write (sd, sp, null, 4); | |
1060 | sp += 4; | |
1061 | ||
1062 | /* Then the actual env strings so we know where to point env[]. */ | |
1063 | for (i = 0; i < envc; ++i) | |
1064 | { | |
1065 | unsigned len = strlen (env[i]) + 1; | |
5b94c380 MF |
1066 | sim_write (sd, sp_flat, env[i], len); |
1067 | sim_write (sd, sp, &sp_flat, 4); | |
ef016f83 MF |
1068 | sp_flat += len; |
1069 | sp += 4; | |
1070 | } | |
1071 | ||
1072 | /* Set some callbacks. */ | |
1073 | cb->syscall_map = cb_linux_syscall_map; | |
1074 | cb->errno_map = cb_linux_errno_map; | |
1075 | cb->open_map = cb_linux_open_map; | |
1076 | cb->signal_map = cb_linux_signal_map; | |
a931db6a MF |
1077 | cb->stat_map = stat_map_32 = cb_linux_stat_map_32; |
1078 | stat_map_64 = cb_linux_stat_map_64; | |
ef016f83 MF |
1079 | } |
1080 | ||
1081 | static void | |
2e3d4f4d | 1082 | bfin_os_init (SIM_DESC sd, SIM_CPU *cpu, char * const *argv) |
ef016f83 MF |
1083 | { |
1084 | /* Pass the command line via a string in R0 like Linux expects. */ | |
1085 | int i; | |
1086 | bu8 byte; | |
1087 | bu32 cmdline = BFIN_L1_SRAM_SCRATCH; | |
1088 | ||
1089 | SET_DREG (0, cmdline); | |
1090 | if (argv && argv[0]) | |
1091 | { | |
1092 | i = 1; | |
1093 | byte = ' '; | |
1094 | while (argv[i]) | |
1095 | { | |
1096 | bu32 len = strlen (argv[i]); | |
5b94c380 | 1097 | sim_write (sd, cmdline, argv[i], len); |
ef016f83 MF |
1098 | cmdline += len; |
1099 | sim_write (sd, cmdline, &byte, 1); | |
1100 | ++cmdline; | |
1101 | ++i; | |
1102 | } | |
1103 | } | |
1104 | byte = 0; | |
1105 | sim_write (sd, cmdline, &byte, 1); | |
1106 | } | |
1107 | ||
a931db6a MF |
1108 | static void |
1109 | bfin_virtual_init (SIM_DESC sd, SIM_CPU *cpu) | |
1110 | { | |
1111 | host_callback *cb = STATE_CALLBACK (sd); | |
1112 | ||
1113 | cb->stat_map = stat_map_32 = cb_libgloss_stat_map_32; | |
1114 | stat_map_64 = NULL; | |
1115 | } | |
1116 | ||
ef016f83 MF |
1117 | SIM_RC |
1118 | sim_create_inferior (SIM_DESC sd, struct bfd *abfd, | |
2e3d4f4d | 1119 | char * const *argv, char * const *env) |
ef016f83 MF |
1120 | { |
1121 | SIM_CPU *cpu = STATE_CPU (sd, 0); | |
8cfc9a18 | 1122 | host_callback *cb = STATE_CALLBACK (sd); |
20fea663 | 1123 | bfd_vma addr; |
ef016f83 MF |
1124 | |
1125 | /* Set the PC. */ | |
1126 | if (abfd != NULL) | |
1127 | addr = bfd_get_start_address (abfd); | |
1128 | else | |
1129 | addr = 0; | |
1130 | sim_pc_set (cpu, addr); | |
1131 | ||
0e967299 MF |
1132 | /* Standalone mode (i.e. `run`) will take care of the argv for us in |
1133 | sim_open() -> sim_parse_args(). But in debug mode (i.e. 'target sim' | |
1134 | with `gdb`), we need to handle it because the user can change the | |
1135 | argv on the fly via gdb's 'run'. */ | |
1136 | if (STATE_PROG_ARGV (sd) != argv) | |
ef016f83 | 1137 | { |
886ea33b | 1138 | freeargv (STATE_PROG_ARGV (sd)); |
ef016f83 MF |
1139 | STATE_PROG_ARGV (sd) = dupargv (argv); |
1140 | } | |
1141 | ||
54f7a83a MF |
1142 | if (STATE_PROG_ENVP (sd) != env) |
1143 | { | |
1144 | freeargv (STATE_PROG_ENVP (sd)); | |
1145 | STATE_PROG_ENVP (sd) = dupargv (env); | |
1146 | } | |
1147 | ||
8cfc9a18 MF |
1148 | cb->argv = STATE_PROG_ARGV (sd); |
1149 | cb->envp = STATE_PROG_ENVP (sd); | |
1150 | ||
ef016f83 MF |
1151 | switch (STATE_ENVIRONMENT (sd)) |
1152 | { | |
1153 | case USER_ENVIRONMENT: | |
2e3d4f4d | 1154 | bfin_user_init (sd, cpu, abfd, argv, env); |
ef016f83 MF |
1155 | break; |
1156 | case OPERATING_ENVIRONMENT: | |
2e3d4f4d | 1157 | bfin_os_init (sd, cpu, argv); |
ef016f83 MF |
1158 | break; |
1159 | default: | |
a931db6a | 1160 | bfin_virtual_init (sd, cpu); |
ef016f83 MF |
1161 | break; |
1162 | } | |
1163 | ||
1164 | return SIM_RC_OK; | |
1165 | } |