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c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
dcb74f96 | 3 | Copyright 1994, 1997, 2003, 2004 Andrew Cagney |
c906108c SS |
4 | |
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. | |
9 | ||
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. | |
14 | ||
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. | |
18 | ||
19 | */ | |
20 | ||
21 | ||
22 | #ifndef _HW_INIT_C_ | |
23 | #define _HW_INIT_C_ | |
24 | ||
25 | #include "device_table.h" | |
26 | #include "bfd.h" | |
27 | #include "psim.h" | |
28 | ||
29 | ||
30 | /* DMA a file into memory */ | |
31 | static int | |
32 | dma_file(device *me, | |
33 | const char *file_name, | |
34 | unsigned_word addr) | |
35 | { | |
36 | int count; | |
37 | int inc; | |
38 | FILE *image; | |
39 | char buf[1024]; | |
40 | ||
41 | /* get it open */ | |
42 | image = fopen(file_name, "r"); | |
43 | if (image == NULL) | |
44 | return -1; | |
45 | ||
46 | /* read it in slowly */ | |
47 | count = 0; | |
48 | while (1) { | |
49 | inc = fread(buf, 1, sizeof(buf), image); | |
d4481806 | 50 | if (inc <= 0) |
c906108c SS |
51 | break; |
52 | if (device_dma_write_buffer(device_parent(me), | |
53 | buf, | |
54 | 0 /*address-space*/, | |
55 | addr+count, | |
56 | inc /*nr-bytes*/, | |
57 | 1 /*violate ro*/) != inc) { | |
58 | fclose(image); | |
59 | return -1; | |
60 | } | |
61 | count += inc; | |
62 | } | |
63 | ||
64 | /* close down again */ | |
65 | fclose(image); | |
66 | ||
67 | return count; | |
68 | } | |
69 | ||
70 | ||
71 | /* DEVICE | |
72 | ||
73 | file - load a file into memory | |
74 | ||
75 | DESCRIPTION | |
76 | ||
77 | Loads the entire contents of <file-name> into memory at starting at | |
78 | <<real-address>>. Assumes that memory exists for the load. | |
79 | ||
80 | PROPERTIES | |
81 | ||
82 | file-name = <string> | |
83 | ||
84 | Name of the file to be loaded into memory | |
85 | ||
86 | real-address = <integer> | |
87 | ||
88 | Real address at which the file is to be loaded */ | |
89 | ||
90 | static void | |
91 | hw_file_init_data_callback(device *me) | |
92 | { | |
93 | int count; | |
94 | const char *file_name = device_find_string_property(me, "file-name"); | |
95 | unsigned_word addr = device_find_integer_property(me, "real-address"); | |
96 | /* load the file */ | |
97 | count = dma_file(me, file_name, addr); | |
98 | if (count < 0) | |
99 | device_error(me, "Problem loading file %s\n", file_name); | |
100 | } | |
101 | ||
102 | ||
103 | static device_callbacks const hw_file_callbacks = { | |
104 | { NULL, hw_file_init_data_callback, }, | |
105 | { NULL, }, /* address */ | |
106 | { NULL, }, /* IO */ | |
107 | { NULL, }, /* DMA */ | |
108 | { NULL, }, /* interrupt */ | |
109 | { NULL, }, /* unit */ | |
110 | }; | |
111 | ||
112 | ||
113 | /* DEVICE | |
114 | ||
115 | ||
116 | data - initialize a memory location with specified data | |
117 | ||
118 | ||
119 | DESCRIPTION | |
120 | ||
121 | ||
122 | The pseudo device <<data>> provides a mechanism specifying the | |
123 | initialization of a small section of memory. | |
124 | ||
125 | Normally, the data would be written using a dma operation. | |
126 | However, for some addresses this will not result in the desired | |
127 | result. For instance, to initialize an address in an eeprom, | |
128 | instead of a simple dma of the data, a sequence of writes (and then | |
129 | real delays) that program the eeprom would be required. | |
130 | ||
131 | For dma write initialization, the data device will write the | |
132 | specified <<data>> to <<real-address>> using a normal dma. | |
133 | ||
134 | For instance write initialization, the specified <<instance>> is | |
135 | opened. Then a seek to the <<real-address>> is performed followed | |
136 | by a write of the data. | |
137 | ||
138 | ||
139 | Integer properties are stored using the target's endian mode. | |
140 | ||
141 | ||
142 | PROPERTIES | |
143 | ||
144 | ||
145 | data = <any-valid-property> (required) | |
146 | ||
147 | Data to be loaded into memory. The property type determines how it | |
148 | is loaded. | |
149 | ||
150 | ||
151 | real-address = <integer> (required) | |
152 | ||
153 | Start address at which the data is to be stored. | |
154 | ||
155 | ||
156 | instance = <string> (optional) | |
157 | ||
158 | Instance specification of the device that is to be opened so that | |
159 | the specified data can be written to it. | |
160 | ||
161 | ||
162 | EXAMPLES | |
163 | ||
164 | ||
165 | The examples below illustrate the two alternative mechanisms that | |
166 | can be used to store the value 0x12345678 at address 0xfff00c00, | |
167 | which is normally part of the 512k system eeprom. | |
168 | ||
169 | ||
170 | If the eeprom is being modeled by ram (<<memory>> device) then the | |
171 | standard dma initialization can be used. By convention: the data | |
172 | devices are uniquely identified by argumenting them with the | |
173 | destinations real address; and all data devices are put under the | |
174 | node <</openprom/init>>. | |
175 | ||
176 | | /openprom/memory@0xfff00000/reg 0xfff00000 0x80000 | |
177 | | /openprom/init/data@0x1000/data 0x12345678 | |
178 | | /openprom/init/data@0x1000/real-address 0x1000 | |
179 | ||
180 | ||
181 | If instead a real eeprom was being used the instance write method | |
182 | would instead need to be used (storing just a single byte in an | |
183 | eeprom requires a complex sequence of accesses). The | |
184 | <<real-address>> is specified as <<0x0c00>> which is the offset | |
185 | into the eeprom. For brevity, most of the eeprom properties have | |
186 | been omited. | |
187 | ||
188 | | /iobus/eeprom@0xfff00000/reg 0xfff00000 0x80000 | |
189 | | /openprom/init/data@0xfff00c00/real-address 0x0c00 | |
190 | | /openprom/init/data@0xfff00c00/data 0x12345667 | |
191 | | /openprom/init/data@0xfff00c00/instance /iobus/eeprom@0xfff00000/reg | |
192 | ||
193 | ||
194 | BUGS | |
195 | ||
196 | ||
197 | At present, only <<integer>> properties can be specified for an | |
198 | initial data value. | |
199 | ||
200 | */ | |
201 | ||
202 | ||
203 | static void | |
204 | hw_data_init_data_callback(device *me) | |
205 | { | |
206 | unsigned_word addr = device_find_integer_property(me, "real-address"); | |
207 | const device_property *data = device_find_property(me, "data"); | |
208 | const char *instance_spec = (device_find_property(me, "instance") != NULL | |
209 | ? device_find_string_property(me, "instance") | |
210 | : NULL); | |
211 | device_instance *instance = NULL; | |
212 | if (data == NULL) | |
213 | device_error(me, "missing property <data>\n"); | |
214 | if (instance_spec != NULL) | |
215 | instance = tree_instance(me, instance_spec); | |
216 | switch (data->type) { | |
217 | case integer_property: | |
218 | { | |
219 | unsigned_cell buf = device_find_integer_property(me, "data"); | |
220 | H2T(buf); | |
221 | if (instance == NULL) { | |
222 | if (device_dma_write_buffer(device_parent(me), | |
223 | &buf, | |
224 | 0 /*address-space*/, | |
225 | addr, | |
226 | sizeof(buf), /*nr-bytes*/ | |
227 | 1 /*violate ro*/) != sizeof(buf)) | |
228 | device_error(me, "Problem storing integer 0x%x at 0x%lx\n", | |
229 | (unsigned)buf, (unsigned long)addr); | |
230 | } | |
231 | else { | |
232 | if (device_instance_seek(instance, 0, addr) < 0 | |
233 | || device_instance_write(instance, &buf, sizeof(buf)) != sizeof(buf)) | |
234 | device_error(me, "Problem storing integer 0x%x at 0x%lx of instance %s\n", | |
235 | (unsigned)buf, (unsigned long)addr, instance_spec); | |
236 | } | |
237 | } | |
238 | break; | |
239 | default: | |
240 | device_error(me, "Write of this data is not yet implemented\n"); | |
241 | break; | |
242 | } | |
243 | if (instance != NULL) | |
244 | device_instance_delete(instance); | |
245 | } | |
246 | ||
247 | ||
248 | static device_callbacks const hw_data_callbacks = { | |
249 | { NULL, hw_data_init_data_callback, }, | |
250 | { NULL, }, /* address */ | |
251 | { NULL, }, /* IO */ | |
252 | { NULL, }, /* DMA */ | |
253 | { NULL, }, /* interrupt */ | |
254 | { NULL, }, /* unit */ | |
255 | }; | |
256 | ||
257 | ||
258 | /* DEVICE | |
259 | ||
260 | ||
261 | load-binary - load binary segments into memory | |
262 | ||
263 | ||
264 | DESCRIPTION | |
265 | ||
266 | Each loadable segment of the specified binary is loaded into memory | |
267 | at its required address. It is assumed that the memory at those | |
268 | addresses already exists. | |
269 | ||
270 | This device is normally used to load an executable into memory as | |
271 | part of real mode simulation. | |
272 | ||
273 | ||
274 | PROPERTIES | |
275 | ||
276 | ||
277 | file-name = <string> | |
278 | ||
279 | Name of the binary to be loaded. | |
280 | ||
281 | ||
282 | claim = <anything> (optional) | |
283 | ||
284 | If this property is present, the real memory that is to be used by | |
285 | the image being loaded will be claimed from the memory node | |
286 | (specified by the ihandle <</chosen/memory>>). | |
287 | ||
288 | ||
289 | BUGS | |
290 | ||
291 | ||
292 | When loading the binary the bfd virtual-address is used. It should | |
293 | be using the bfd load-address. | |
294 | ||
295 | */ | |
296 | ||
297 | /* DEVICE | |
298 | ||
299 | map-binary - map the binary into the users address space | |
300 | ||
301 | DESCRIPTION | |
302 | ||
303 | Similar to load-binary except that memory for each segment is | |
304 | created before the corresponding data for the segment is loaded. | |
305 | ||
306 | This device is normally used to load an executable into a user mode | |
307 | simulation. | |
308 | ||
309 | PROPERTIES | |
310 | ||
311 | file-name = <string> | |
312 | ||
313 | Name of the binary to be loaded. | |
314 | ||
315 | */ | |
316 | ||
317 | static void | |
318 | update_for_binary_section(bfd *abfd, | |
319 | asection *the_section, | |
320 | PTR obj) | |
321 | { | |
322 | unsigned_word section_vma; | |
323 | unsigned_word section_size; | |
324 | access_type access; | |
325 | device *me = (device*)obj; | |
326 | ||
327 | /* skip the section if no memory to allocate */ | |
328 | if (! (bfd_get_section_flags(abfd, the_section) & SEC_ALLOC)) | |
329 | return; | |
330 | ||
331 | /* check/ignore any sections of size zero */ | |
dcb74f96 | 332 | section_size = bfd_get_section_size (the_section); |
c906108c SS |
333 | if (section_size == 0) |
334 | return; | |
335 | ||
336 | /* find where it is to go */ | |
337 | section_vma = bfd_get_section_vma(abfd, the_section); | |
338 | ||
339 | DTRACE(binary, | |
340 | ("name=%-7s, vma=0x%.8lx, size=%6ld, flags=%3lx(%s%s%s%s%s )\n", | |
341 | bfd_get_section_name(abfd, the_section), | |
342 | (long)section_vma, | |
343 | (long)section_size, | |
344 | (long)bfd_get_section_flags(abfd, the_section), | |
345 | bfd_get_section_flags(abfd, the_section) & SEC_LOAD ? " LOAD" : "", | |
346 | bfd_get_section_flags(abfd, the_section) & SEC_CODE ? " CODE" : "", | |
347 | bfd_get_section_flags(abfd, the_section) & SEC_DATA ? " DATA" : "", | |
348 | bfd_get_section_flags(abfd, the_section) & SEC_ALLOC ? " ALLOC" : "", | |
349 | bfd_get_section_flags(abfd, the_section) & SEC_READONLY ? " READONLY" : "" | |
350 | )); | |
351 | ||
352 | /* If there is an .interp section, it means it needs a shared library interpreter. */ | |
353 | if (strcmp(".interp", bfd_get_section_name(abfd, the_section)) == 0) | |
354 | error("Shared libraries are not yet supported.\n"); | |
355 | ||
356 | /* determine the devices access */ | |
357 | access = access_read; | |
358 | if (bfd_get_section_flags(abfd, the_section) & SEC_CODE) | |
359 | access |= access_exec; | |
360 | if (!(bfd_get_section_flags(abfd, the_section) & SEC_READONLY)) | |
361 | access |= access_write; | |
362 | ||
363 | /* if claim specified, allocate region from the memory device */ | |
364 | if (device_find_property(me, "claim") != NULL) { | |
365 | device_instance *memory = tree_find_ihandle_property(me, "/chosen/memory"); | |
366 | unsigned_cell mem_in[3]; | |
367 | unsigned_cell mem_out[1]; | |
368 | mem_in[0] = 0; /*alignment - top-of-stack*/ | |
369 | mem_in[1] = section_size; | |
370 | mem_in[2] = section_vma; | |
371 | if (device_instance_call_method(memory, "claim", 3, mem_in, 1, mem_out) < 0) | |
372 | device_error(me, "failed to claim memory for section at 0x%lx (0x%lx", | |
373 | section_vma, | |
374 | section_size); | |
375 | if (mem_out[0] != section_vma) | |
376 | device_error(me, "section address not as requested"); | |
377 | } | |
378 | ||
379 | /* if a map, pass up a request to create the memory in core */ | |
380 | if (strncmp(device_name(me), "map-binary", strlen("map-binary")) == 0) | |
381 | device_attach_address(device_parent(me), | |
382 | attach_raw_memory, | |
383 | 0 /*address space*/, | |
384 | section_vma, | |
385 | section_size, | |
386 | access, | |
387 | me); | |
388 | ||
389 | /* if a load dma in the required data */ | |
390 | if (bfd_get_section_flags(abfd, the_section) & SEC_LOAD) { | |
391 | void *section_init = zalloc(section_size); | |
392 | if (!bfd_get_section_contents(abfd, | |
393 | the_section, | |
394 | section_init, 0, | |
395 | section_size)) { | |
396 | bfd_perror("binary"); | |
397 | device_error(me, "load of data failed"); | |
398 | return; | |
399 | } | |
400 | if (device_dma_write_buffer(device_parent(me), | |
401 | section_init, | |
402 | 0 /*space*/, | |
403 | section_vma, | |
404 | section_size, | |
405 | 1 /*violate_read_only*/) | |
406 | != section_size) | |
407 | device_error(me, "broken transfer\n"); | |
408 | zfree(section_init); /* only free if load */ | |
409 | } | |
410 | } | |
411 | ||
412 | static void | |
413 | hw_binary_init_data_callback(device *me) | |
414 | { | |
415 | /* get the file name */ | |
416 | const char *file_name = device_find_string_property(me, "file-name"); | |
417 | bfd *image; | |
418 | ||
419 | /* open the file */ | |
420 | image = bfd_openr(file_name, NULL); | |
421 | if (image == NULL) { | |
422 | bfd_perror("binary"); | |
423 | device_error(me, "Failed to open file %s\n", file_name); | |
424 | } | |
425 | ||
426 | /* check it is valid */ | |
427 | if (!bfd_check_format(image, bfd_object)) { | |
428 | bfd_close(image); | |
429 | device_error(me, "The file %s has an invalid binary format\n", file_name); | |
430 | } | |
431 | ||
432 | /* and the data sections */ | |
433 | bfd_map_over_sections(image, | |
434 | update_for_binary_section, | |
435 | (PTR)me); | |
436 | ||
437 | bfd_close(image); | |
438 | } | |
439 | ||
440 | ||
441 | static device_callbacks const hw_binary_callbacks = { | |
442 | { NULL, hw_binary_init_data_callback, }, | |
443 | { NULL, }, /* address */ | |
444 | { NULL, }, /* IO */ | |
445 | { NULL, }, /* DMA */ | |
446 | { NULL, }, /* interrupt */ | |
447 | { NULL, }, /* unit */ | |
448 | }; | |
449 | ||
450 | ||
451 | /* DEVICE | |
452 | ||
453 | stack - create an initial stack frame in memory | |
454 | ||
455 | DESCRIPTION | |
456 | ||
457 | Creates a stack frame of the specified type in memory. | |
458 | ||
459 | Due to the startup sequence gdb uses when commencing a simulation, | |
460 | it is not possible for the data to be placed on the stack to be | |
461 | specified as part of the device tree. Instead the arguments to be | |
462 | pushed onto the stack are specified using an IOCTL call. | |
463 | ||
464 | The IOCTL takes the additional arguments: | |
465 | ||
466 | | unsigned_word stack_end -- where the stack should come down from | |
467 | | char **argv -- ... | |
468 | | char **envp -- ... | |
469 | ||
470 | PROPERTIES | |
471 | ||
472 | stack-type = <string> | |
473 | ||
474 | The form of the stack frame that is to be created. | |
475 | ||
476 | */ | |
477 | ||
478 | static int | |
479 | sizeof_argument_strings(char **arg) | |
480 | { | |
481 | int sizeof_strings = 0; | |
482 | ||
483 | /* robust */ | |
484 | if (arg == NULL) | |
485 | return 0; | |
486 | ||
487 | /* add up all the string sizes (padding as we go) */ | |
488 | for (; *arg != NULL; arg++) { | |
489 | int len = strlen(*arg) + 1; | |
490 | sizeof_strings += ALIGN_8(len); | |
491 | } | |
492 | ||
493 | return sizeof_strings; | |
494 | } | |
495 | ||
496 | static int | |
497 | number_of_arguments(char **arg) | |
498 | { | |
499 | int nr; | |
500 | if (arg == NULL) | |
501 | return 0; | |
502 | for (nr = 0; *arg != NULL; arg++, nr++); | |
503 | return nr; | |
504 | } | |
505 | ||
506 | static int | |
507 | sizeof_arguments(char **arg) | |
508 | { | |
509 | return ALIGN_8((number_of_arguments(arg) + 1) * sizeof(unsigned_word)); | |
510 | } | |
511 | ||
512 | static void | |
513 | write_stack_arguments(device *me, | |
514 | char **arg, | |
515 | unsigned_word start_block, | |
516 | unsigned_word end_block, | |
517 | unsigned_word start_arg, | |
518 | unsigned_word end_arg) | |
519 | { | |
520 | DTRACE(stack, | |
521 | ("write_stack_arguments(device=%s, arg=0x%lx, start_block=0x%lx, end_block=0x%lx, start_arg=0x%lx, end_arg=0x%lx)\n", | |
522 | device_name(me), (long)arg, (long)start_block, (long)end_block, (long)start_arg, (long)end_arg)); | |
523 | if (arg == NULL) | |
524 | device_error(me, "Attempt to write a null array onto the stack\n"); | |
525 | /* only copy in arguments, memory is already zero */ | |
526 | for (; *arg != NULL; arg++) { | |
527 | int len = strlen(*arg)+1; | |
528 | unsigned_word target_start_block; | |
529 | DTRACE(stack, | |
530 | ("write_stack_arguments() write %s=%s at %s=0x%lx %s=0x%lx %s=0x%lx\n", | |
531 | "**arg", *arg, "start_block", (long)start_block, | |
532 | "len", (long)len, "start_arg", (long)start_arg)); | |
533 | if (psim_write_memory(device_system(me), 0, *arg, | |
534 | start_block, len, | |
535 | 0/*violate_readonly*/) != len) | |
536 | device_error(me, "Write of **arg (%s) at 0x%lx of stack failed\n", | |
537 | *arg, (unsigned long)start_block); | |
538 | target_start_block = H2T_word(start_block); | |
539 | if (psim_write_memory(device_system(me), 0, &target_start_block, | |
540 | start_arg, sizeof(target_start_block), | |
541 | 0) != sizeof(target_start_block)) | |
542 | device_error(me, "Write of *arg onto stack failed\n"); | |
543 | start_block += ALIGN_8(len); | |
544 | start_arg += sizeof(start_block); | |
545 | } | |
546 | start_arg += sizeof(start_block); /*the null at the end*/ | |
547 | if (start_block != end_block | |
548 | || ALIGN_8(start_arg) != end_arg) | |
549 | device_error(me, "Probable corrpution of stack arguments\n"); | |
550 | DTRACE(stack, ("write_stack_arguments() = void\n")); | |
551 | } | |
552 | ||
553 | static void | |
554 | create_ppc_elf_stack_frame(device *me, | |
555 | unsigned_word bottom_of_stack, | |
556 | char **argv, | |
557 | char **envp) | |
558 | { | |
559 | /* fixme - this is over aligned */ | |
560 | ||
561 | /* information block */ | |
562 | const unsigned sizeof_envp_block = sizeof_argument_strings(envp); | |
563 | const unsigned_word start_envp_block = bottom_of_stack - sizeof_envp_block; | |
564 | const unsigned sizeof_argv_block = sizeof_argument_strings(argv); | |
565 | const unsigned_word start_argv_block = start_envp_block - sizeof_argv_block; | |
566 | ||
567 | /* auxiliary vector - contains only one entry */ | |
568 | const unsigned sizeof_aux_entry = 2*sizeof(unsigned_word); /* magic */ | |
569 | const unsigned_word start_aux = start_argv_block - ALIGN_8(sizeof_aux_entry); | |
570 | ||
571 | /* environment points (including null sentinal) */ | |
572 | const unsigned sizeof_envp = sizeof_arguments(envp); | |
573 | const unsigned_word start_envp = start_aux - sizeof_envp; | |
574 | ||
575 | /* argument pointers (including null sentinal) */ | |
576 | const int argc = number_of_arguments(argv); | |
577 | const unsigned sizeof_argv = sizeof_arguments(argv); | |
578 | const unsigned_word start_argv = start_envp - sizeof_argv; | |
579 | ||
580 | /* link register save address - alligned to a 16byte boundary */ | |
581 | const unsigned_word top_of_stack = ((start_argv | |
582 | - 2 * sizeof(unsigned_word)) | |
583 | & ~0xf); | |
584 | ||
585 | /* install arguments on stack */ | |
586 | write_stack_arguments(me, envp, | |
587 | start_envp_block, bottom_of_stack, | |
588 | start_envp, start_aux); | |
589 | write_stack_arguments(me, argv, | |
590 | start_argv_block, start_envp_block, | |
591 | start_argv, start_envp); | |
592 | ||
593 | /* set up the registers */ | |
601cecf0 AC |
594 | ASSERT (psim_write_register(device_system(me), -1, |
595 | &top_of_stack, "sp", cooked_transfer) > 0); | |
596 | ASSERT (psim_write_register(device_system(me), -1, | |
597 | &argc, "r3", cooked_transfer) > 0); | |
598 | ASSERT (psim_write_register(device_system(me), -1, | |
599 | &start_argv, "r4", cooked_transfer) > 0); | |
600 | ASSERT (psim_write_register(device_system(me), -1, | |
601 | &start_envp, "r5", cooked_transfer) > 0); | |
602 | ASSERT (psim_write_register(device_system(me), -1, | |
603 | &start_aux, "r6", cooked_transfer) > 0); | |
c906108c SS |
604 | } |
605 | ||
606 | static void | |
607 | create_ppc_aix_stack_frame(device *me, | |
608 | unsigned_word bottom_of_stack, | |
609 | char **argv, | |
610 | char **envp) | |
611 | { | |
612 | unsigned_word core_envp; | |
613 | unsigned_word core_argv; | |
614 | unsigned_word core_argc; | |
615 | unsigned_word core_aux; | |
616 | unsigned_word top_of_stack; | |
617 | ||
618 | /* cheat - create an elf stack frame */ | |
619 | create_ppc_elf_stack_frame(me, bottom_of_stack, argv, envp); | |
620 | ||
621 | /* extract argument addresses from registers */ | |
601cecf0 AC |
622 | ASSERT (psim_read_register(device_system(me), 0, |
623 | &top_of_stack, "r1", cooked_transfer) > 0); | |
624 | ASSERT (psim_read_register(device_system(me), 0, | |
625 | &core_argc, "r3", cooked_transfer) > 0); | |
626 | ASSERT (psim_read_register(device_system(me), 0, | |
627 | &core_argv, "r4", cooked_transfer) > 0); | |
628 | ASSERT (psim_read_register(device_system(me), 0, | |
629 | &core_envp, "r5", cooked_transfer) > 0); | |
630 | ASSERT (psim_read_register(device_system(me), 0, | |
631 | &core_aux, "r6", cooked_transfer) > 0); | |
c906108c SS |
632 | |
633 | /* extract arguments from registers */ | |
634 | device_error(me, "Unfinished procedure create_ppc_aix_stack_frame\n"); | |
635 | } | |
636 | ||
637 | ||
638 | static void | |
639 | create_ppc_chirp_bootargs(device *me, | |
640 | char **argv) | |
641 | { | |
642 | /* concat the arguments */ | |
643 | char args[1024]; | |
644 | char **chp = argv + 1; | |
645 | args[0] = '\0'; | |
646 | while (*chp != NULL) { | |
647 | if (strlen(args) > 0) | |
648 | strcat(args, " "); | |
649 | if (strlen(args) + strlen(*chp) >= sizeof(args)) | |
650 | device_error(me, "buffer overflow"); | |
651 | strcat(args, *chp); | |
652 | chp++; | |
653 | } | |
654 | ||
655 | /* set the arguments property */ | |
656 | tree_parse(me, "/chosen/bootargs \"%s", args); | |
657 | } | |
658 | ||
659 | ||
660 | static int | |
661 | hw_stack_ioctl(device *me, | |
662 | cpu *processor, | |
663 | unsigned_word cia, | |
664 | device_ioctl_request request, | |
665 | va_list ap) | |
666 | { | |
667 | switch (request) { | |
668 | case device_ioctl_create_stack: | |
669 | { | |
670 | unsigned_word stack_pointer = va_arg(ap, unsigned_word); | |
671 | char **argv = va_arg(ap, char **); | |
672 | char **envp = va_arg(ap, char **); | |
673 | const char *stack_type; | |
674 | DTRACE(stack, | |
675 | ("stack_ioctl_callback(me=0x%lx:%s processor=0x%lx cia=0x%lx argv=0x%lx envp=0x%lx)\n", | |
676 | (long)me, device_name(me), | |
677 | (long)processor, | |
678 | (long)cia, | |
679 | (long)argv, | |
680 | (long)envp)); | |
681 | stack_type = device_find_string_property(me, "stack-type"); | |
682 | if (strcmp(stack_type, "ppc-elf") == 0) | |
683 | create_ppc_elf_stack_frame(me, stack_pointer, argv, envp); | |
684 | else if (strcmp(stack_type, "ppc-xcoff") == 0) | |
685 | create_ppc_aix_stack_frame(me, stack_pointer, argv, envp); | |
686 | else if (strcmp(stack_type, "chirp") == 0) | |
687 | create_ppc_chirp_bootargs(me, argv); | |
688 | else if (strcmp(stack_type, "none") != 0) | |
689 | device_error(me, "Unknown initial stack frame type %s", stack_type); | |
690 | DTRACE(stack, | |
691 | ("stack_ioctl_callback() = void\n")); | |
692 | break; | |
693 | } | |
694 | default: | |
695 | device_error(me, "Unsupported ioctl requested"); | |
696 | break; | |
697 | } | |
698 | return 0; | |
699 | } | |
700 | ||
701 | static device_callbacks const hw_stack_callbacks = { | |
702 | { NULL, }, | |
703 | { NULL, }, /* address */ | |
704 | { NULL, }, /* IO */ | |
705 | { NULL, }, /* DMA */ | |
706 | { NULL, }, /* interrupt */ | |
707 | { NULL, }, /* unit */ | |
708 | NULL, /* instance */ | |
709 | hw_stack_ioctl, | |
710 | }; | |
711 | ||
712 | const device_descriptor hw_init_device_descriptor[] = { | |
713 | { "file", NULL, &hw_file_callbacks }, | |
714 | { "data", NULL, &hw_data_callbacks }, | |
715 | { "load-binary", NULL, &hw_binary_callbacks }, | |
716 | { "map-binary", NULL, &hw_binary_callbacks }, | |
717 | { "stack", NULL, &hw_stack_callbacks }, | |
718 | { NULL }, | |
719 | }; | |
720 | ||
50427dbf | 721 | #endif /* _HW_INIT_C_ */ |