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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 | |
3fd725ef | 7 | the Free Software Foundation; either version 3 of the License, or |
c906108c SS |
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 | |
51b318de | 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
c906108c SS |
17 | |
18 | */ | |
19 | ||
20 | ||
21 | #ifndef _HW_INIT_C_ | |
22 | #define _HW_INIT_C_ | |
23 | ||
24 | #include "device_table.h" | |
25 | #include "bfd.h" | |
26 | #include "psim.h" | |
27 | ||
28 | ||
29 | /* DMA a file into memory */ | |
30 | static int | |
31 | dma_file(device *me, | |
32 | const char *file_name, | |
33 | unsigned_word addr) | |
34 | { | |
35 | int count; | |
36 | int inc; | |
37 | FILE *image; | |
38 | char buf[1024]; | |
39 | ||
40 | /* get it open */ | |
41 | image = fopen(file_name, "r"); | |
42 | if (image == NULL) | |
43 | return -1; | |
44 | ||
45 | /* read it in slowly */ | |
46 | count = 0; | |
47 | while (1) { | |
48 | inc = fread(buf, 1, sizeof(buf), image); | |
d4481806 | 49 | if (inc <= 0) |
c906108c SS |
50 | break; |
51 | if (device_dma_write_buffer(device_parent(me), | |
52 | buf, | |
53 | 0 /*address-space*/, | |
54 | addr+count, | |
55 | inc /*nr-bytes*/, | |
56 | 1 /*violate ro*/) != inc) { | |
57 | fclose(image); | |
58 | return -1; | |
59 | } | |
60 | count += inc; | |
61 | } | |
62 | ||
63 | /* close down again */ | |
64 | fclose(image); | |
65 | ||
66 | return count; | |
67 | } | |
68 | ||
69 | ||
70 | /* DEVICE | |
71 | ||
72 | file - load a file into memory | |
73 | ||
74 | DESCRIPTION | |
75 | ||
76 | Loads the entire contents of <file-name> into memory at starting at | |
77 | <<real-address>>. Assumes that memory exists for the load. | |
78 | ||
79 | PROPERTIES | |
80 | ||
81 | file-name = <string> | |
82 | ||
83 | Name of the file to be loaded into memory | |
84 | ||
85 | real-address = <integer> | |
86 | ||
87 | Real address at which the file is to be loaded */ | |
88 | ||
89 | static void | |
90 | hw_file_init_data_callback(device *me) | |
91 | { | |
92 | int count; | |
93 | const char *file_name = device_find_string_property(me, "file-name"); | |
94 | unsigned_word addr = device_find_integer_property(me, "real-address"); | |
95 | /* load the file */ | |
96 | count = dma_file(me, file_name, addr); | |
97 | if (count < 0) | |
98 | device_error(me, "Problem loading file %s\n", file_name); | |
99 | } | |
100 | ||
101 | ||
102 | static device_callbacks const hw_file_callbacks = { | |
103 | { NULL, hw_file_init_data_callback, }, | |
104 | { NULL, }, /* address */ | |
105 | { NULL, }, /* IO */ | |
106 | { NULL, }, /* DMA */ | |
107 | { NULL, }, /* interrupt */ | |
108 | { NULL, }, /* unit */ | |
109 | }; | |
110 | ||
111 | ||
112 | /* DEVICE | |
113 | ||
114 | ||
115 | data - initialize a memory location with specified data | |
116 | ||
117 | ||
118 | DESCRIPTION | |
119 | ||
120 | ||
121 | The pseudo device <<data>> provides a mechanism specifying the | |
122 | initialization of a small section of memory. | |
123 | ||
124 | Normally, the data would be written using a dma operation. | |
125 | However, for some addresses this will not result in the desired | |
126 | result. For instance, to initialize an address in an eeprom, | |
127 | instead of a simple dma of the data, a sequence of writes (and then | |
128 | real delays) that program the eeprom would be required. | |
129 | ||
130 | For dma write initialization, the data device will write the | |
131 | specified <<data>> to <<real-address>> using a normal dma. | |
132 | ||
133 | For instance write initialization, the specified <<instance>> is | |
134 | opened. Then a seek to the <<real-address>> is performed followed | |
135 | by a write of the data. | |
136 | ||
137 | ||
138 | Integer properties are stored using the target's endian mode. | |
139 | ||
140 | ||
141 | PROPERTIES | |
142 | ||
143 | ||
144 | data = <any-valid-property> (required) | |
145 | ||
146 | Data to be loaded into memory. The property type determines how it | |
147 | is loaded. | |
148 | ||
149 | ||
150 | real-address = <integer> (required) | |
151 | ||
152 | Start address at which the data is to be stored. | |
153 | ||
154 | ||
155 | instance = <string> (optional) | |
156 | ||
157 | Instance specification of the device that is to be opened so that | |
158 | the specified data can be written to it. | |
159 | ||
160 | ||
161 | EXAMPLES | |
162 | ||
163 | ||
164 | The examples below illustrate the two alternative mechanisms that | |
165 | can be used to store the value 0x12345678 at address 0xfff00c00, | |
166 | which is normally part of the 512k system eeprom. | |
167 | ||
168 | ||
169 | If the eeprom is being modeled by ram (<<memory>> device) then the | |
170 | standard dma initialization can be used. By convention: the data | |
171 | devices are uniquely identified by argumenting them with the | |
172 | destinations real address; and all data devices are put under the | |
173 | node <</openprom/init>>. | |
174 | ||
175 | | /openprom/memory@0xfff00000/reg 0xfff00000 0x80000 | |
176 | | /openprom/init/data@0x1000/data 0x12345678 | |
177 | | /openprom/init/data@0x1000/real-address 0x1000 | |
178 | ||
179 | ||
180 | If instead a real eeprom was being used the instance write method | |
181 | would instead need to be used (storing just a single byte in an | |
182 | eeprom requires a complex sequence of accesses). The | |
183 | <<real-address>> is specified as <<0x0c00>> which is the offset | |
184 | into the eeprom. For brevity, most of the eeprom properties have | |
185 | been omited. | |
186 | ||
187 | | /iobus/eeprom@0xfff00000/reg 0xfff00000 0x80000 | |
188 | | /openprom/init/data@0xfff00c00/real-address 0x0c00 | |
189 | | /openprom/init/data@0xfff00c00/data 0x12345667 | |
190 | | /openprom/init/data@0xfff00c00/instance /iobus/eeprom@0xfff00000/reg | |
191 | ||
192 | ||
193 | BUGS | |
194 | ||
195 | ||
196 | At present, only <<integer>> properties can be specified for an | |
197 | initial data value. | |
198 | ||
199 | */ | |
200 | ||
201 | ||
202 | static void | |
203 | hw_data_init_data_callback(device *me) | |
204 | { | |
205 | unsigned_word addr = device_find_integer_property(me, "real-address"); | |
206 | const device_property *data = device_find_property(me, "data"); | |
207 | const char *instance_spec = (device_find_property(me, "instance") != NULL | |
208 | ? device_find_string_property(me, "instance") | |
209 | : NULL); | |
210 | device_instance *instance = NULL; | |
211 | if (data == NULL) | |
212 | device_error(me, "missing property <data>\n"); | |
213 | if (instance_spec != NULL) | |
214 | instance = tree_instance(me, instance_spec); | |
215 | switch (data->type) { | |
216 | case integer_property: | |
217 | { | |
218 | unsigned_cell buf = device_find_integer_property(me, "data"); | |
219 | H2T(buf); | |
220 | if (instance == NULL) { | |
221 | if (device_dma_write_buffer(device_parent(me), | |
222 | &buf, | |
223 | 0 /*address-space*/, | |
224 | addr, | |
225 | sizeof(buf), /*nr-bytes*/ | |
226 | 1 /*violate ro*/) != sizeof(buf)) | |
227 | device_error(me, "Problem storing integer 0x%x at 0x%lx\n", | |
228 | (unsigned)buf, (unsigned long)addr); | |
229 | } | |
230 | else { | |
231 | if (device_instance_seek(instance, 0, addr) < 0 | |
232 | || device_instance_write(instance, &buf, sizeof(buf)) != sizeof(buf)) | |
233 | device_error(me, "Problem storing integer 0x%x at 0x%lx of instance %s\n", | |
234 | (unsigned)buf, (unsigned long)addr, instance_spec); | |
235 | } | |
236 | } | |
237 | break; | |
238 | default: | |
239 | device_error(me, "Write of this data is not yet implemented\n"); | |
240 | break; | |
241 | } | |
242 | if (instance != NULL) | |
243 | device_instance_delete(instance); | |
244 | } | |
245 | ||
246 | ||
247 | static device_callbacks const hw_data_callbacks = { | |
248 | { NULL, hw_data_init_data_callback, }, | |
249 | { NULL, }, /* address */ | |
250 | { NULL, }, /* IO */ | |
251 | { NULL, }, /* DMA */ | |
252 | { NULL, }, /* interrupt */ | |
253 | { NULL, }, /* unit */ | |
254 | }; | |
255 | ||
256 | ||
257 | /* DEVICE | |
258 | ||
259 | ||
260 | load-binary - load binary segments into memory | |
261 | ||
262 | ||
263 | DESCRIPTION | |
264 | ||
265 | Each loadable segment of the specified binary is loaded into memory | |
266 | at its required address. It is assumed that the memory at those | |
267 | addresses already exists. | |
268 | ||
269 | This device is normally used to load an executable into memory as | |
270 | part of real mode simulation. | |
271 | ||
272 | ||
273 | PROPERTIES | |
274 | ||
275 | ||
276 | file-name = <string> | |
277 | ||
278 | Name of the binary to be loaded. | |
279 | ||
280 | ||
281 | claim = <anything> (optional) | |
282 | ||
283 | If this property is present, the real memory that is to be used by | |
284 | the image being loaded will be claimed from the memory node | |
285 | (specified by the ihandle <</chosen/memory>>). | |
286 | ||
287 | ||
288 | BUGS | |
289 | ||
290 | ||
291 | When loading the binary the bfd virtual-address is used. It should | |
292 | be using the bfd load-address. | |
293 | ||
294 | */ | |
295 | ||
296 | /* DEVICE | |
297 | ||
298 | map-binary - map the binary into the users address space | |
299 | ||
300 | DESCRIPTION | |
301 | ||
302 | Similar to load-binary except that memory for each segment is | |
303 | created before the corresponding data for the segment is loaded. | |
304 | ||
305 | This device is normally used to load an executable into a user mode | |
306 | simulation. | |
307 | ||
308 | PROPERTIES | |
309 | ||
310 | file-name = <string> | |
311 | ||
312 | Name of the binary to be loaded. | |
313 | ||
314 | */ | |
315 | ||
316 | static void | |
317 | update_for_binary_section(bfd *abfd, | |
318 | asection *the_section, | |
319 | PTR obj) | |
320 | { | |
321 | unsigned_word section_vma; | |
322 | unsigned_word section_size; | |
323 | access_type access; | |
324 | device *me = (device*)obj; | |
325 | ||
326 | /* skip the section if no memory to allocate */ | |
327 | if (! (bfd_get_section_flags(abfd, the_section) & SEC_ALLOC)) | |
328 | return; | |
329 | ||
330 | /* check/ignore any sections of size zero */ | |
dcb74f96 | 331 | section_size = bfd_get_section_size (the_section); |
c906108c SS |
332 | if (section_size == 0) |
333 | return; | |
334 | ||
335 | /* find where it is to go */ | |
336 | section_vma = bfd_get_section_vma(abfd, the_section); | |
337 | ||
338 | DTRACE(binary, | |
339 | ("name=%-7s, vma=0x%.8lx, size=%6ld, flags=%3lx(%s%s%s%s%s )\n", | |
340 | bfd_get_section_name(abfd, the_section), | |
341 | (long)section_vma, | |
342 | (long)section_size, | |
343 | (long)bfd_get_section_flags(abfd, the_section), | |
344 | bfd_get_section_flags(abfd, the_section) & SEC_LOAD ? " LOAD" : "", | |
345 | bfd_get_section_flags(abfd, the_section) & SEC_CODE ? " CODE" : "", | |
346 | bfd_get_section_flags(abfd, the_section) & SEC_DATA ? " DATA" : "", | |
347 | bfd_get_section_flags(abfd, the_section) & SEC_ALLOC ? " ALLOC" : "", | |
348 | bfd_get_section_flags(abfd, the_section) & SEC_READONLY ? " READONLY" : "" | |
349 | )); | |
350 | ||
351 | /* If there is an .interp section, it means it needs a shared library interpreter. */ | |
352 | if (strcmp(".interp", bfd_get_section_name(abfd, the_section)) == 0) | |
353 | error("Shared libraries are not yet supported.\n"); | |
354 | ||
355 | /* determine the devices access */ | |
356 | access = access_read; | |
357 | if (bfd_get_section_flags(abfd, the_section) & SEC_CODE) | |
358 | access |= access_exec; | |
359 | if (!(bfd_get_section_flags(abfd, the_section) & SEC_READONLY)) | |
360 | access |= access_write; | |
361 | ||
362 | /* if claim specified, allocate region from the memory device */ | |
363 | if (device_find_property(me, "claim") != NULL) { | |
364 | device_instance *memory = tree_find_ihandle_property(me, "/chosen/memory"); | |
365 | unsigned_cell mem_in[3]; | |
366 | unsigned_cell mem_out[1]; | |
367 | mem_in[0] = 0; /*alignment - top-of-stack*/ | |
368 | mem_in[1] = section_size; | |
369 | mem_in[2] = section_vma; | |
370 | if (device_instance_call_method(memory, "claim", 3, mem_in, 1, mem_out) < 0) | |
371 | device_error(me, "failed to claim memory for section at 0x%lx (0x%lx", | |
372 | section_vma, | |
373 | section_size); | |
374 | if (mem_out[0] != section_vma) | |
375 | device_error(me, "section address not as requested"); | |
376 | } | |
377 | ||
378 | /* if a map, pass up a request to create the memory in core */ | |
379 | if (strncmp(device_name(me), "map-binary", strlen("map-binary")) == 0) | |
380 | device_attach_address(device_parent(me), | |
381 | attach_raw_memory, | |
382 | 0 /*address space*/, | |
383 | section_vma, | |
384 | section_size, | |
385 | access, | |
386 | me); | |
387 | ||
388 | /* if a load dma in the required data */ | |
389 | if (bfd_get_section_flags(abfd, the_section) & SEC_LOAD) { | |
390 | void *section_init = zalloc(section_size); | |
391 | if (!bfd_get_section_contents(abfd, | |
392 | the_section, | |
393 | section_init, 0, | |
394 | section_size)) { | |
395 | bfd_perror("binary"); | |
396 | device_error(me, "load of data failed"); | |
397 | return; | |
398 | } | |
399 | if (device_dma_write_buffer(device_parent(me), | |
400 | section_init, | |
401 | 0 /*space*/, | |
402 | section_vma, | |
403 | section_size, | |
404 | 1 /*violate_read_only*/) | |
405 | != section_size) | |
406 | device_error(me, "broken transfer\n"); | |
d79fe0d6 | 407 | free(section_init); /* only free if load */ |
c906108c SS |
408 | } |
409 | } | |
410 | ||
411 | static void | |
412 | hw_binary_init_data_callback(device *me) | |
413 | { | |
414 | /* get the file name */ | |
415 | const char *file_name = device_find_string_property(me, "file-name"); | |
416 | bfd *image; | |
417 | ||
418 | /* open the file */ | |
419 | image = bfd_openr(file_name, NULL); | |
420 | if (image == NULL) { | |
421 | bfd_perror("binary"); | |
422 | device_error(me, "Failed to open file %s\n", file_name); | |
423 | } | |
424 | ||
425 | /* check it is valid */ | |
426 | if (!bfd_check_format(image, bfd_object)) { | |
427 | bfd_close(image); | |
428 | device_error(me, "The file %s has an invalid binary format\n", file_name); | |
429 | } | |
430 | ||
431 | /* and the data sections */ | |
432 | bfd_map_over_sections(image, | |
433 | update_for_binary_section, | |
434 | (PTR)me); | |
435 | ||
436 | bfd_close(image); | |
437 | } | |
438 | ||
439 | ||
440 | static device_callbacks const hw_binary_callbacks = { | |
441 | { NULL, hw_binary_init_data_callback, }, | |
442 | { NULL, }, /* address */ | |
443 | { NULL, }, /* IO */ | |
444 | { NULL, }, /* DMA */ | |
445 | { NULL, }, /* interrupt */ | |
446 | { NULL, }, /* unit */ | |
447 | }; | |
448 | ||
449 | ||
450 | /* DEVICE | |
451 | ||
452 | stack - create an initial stack frame in memory | |
453 | ||
454 | DESCRIPTION | |
455 | ||
456 | Creates a stack frame of the specified type in memory. | |
457 | ||
458 | Due to the startup sequence gdb uses when commencing a simulation, | |
459 | it is not possible for the data to be placed on the stack to be | |
460 | specified as part of the device tree. Instead the arguments to be | |
461 | pushed onto the stack are specified using an IOCTL call. | |
462 | ||
463 | The IOCTL takes the additional arguments: | |
464 | ||
465 | | unsigned_word stack_end -- where the stack should come down from | |
466 | | char **argv -- ... | |
467 | | char **envp -- ... | |
468 | ||
469 | PROPERTIES | |
470 | ||
471 | stack-type = <string> | |
472 | ||
473 | The form of the stack frame that is to be created. | |
474 | ||
475 | */ | |
476 | ||
477 | static int | |
478 | sizeof_argument_strings(char **arg) | |
479 | { | |
480 | int sizeof_strings = 0; | |
481 | ||
482 | /* robust */ | |
483 | if (arg == NULL) | |
484 | return 0; | |
485 | ||
486 | /* add up all the string sizes (padding as we go) */ | |
487 | for (; *arg != NULL; arg++) { | |
488 | int len = strlen(*arg) + 1; | |
489 | sizeof_strings += ALIGN_8(len); | |
490 | } | |
491 | ||
492 | return sizeof_strings; | |
493 | } | |
494 | ||
495 | static int | |
496 | number_of_arguments(char **arg) | |
497 | { | |
498 | int nr; | |
499 | if (arg == NULL) | |
500 | return 0; | |
501 | for (nr = 0; *arg != NULL; arg++, nr++); | |
502 | return nr; | |
503 | } | |
504 | ||
505 | static int | |
506 | sizeof_arguments(char **arg) | |
507 | { | |
508 | return ALIGN_8((number_of_arguments(arg) + 1) * sizeof(unsigned_word)); | |
509 | } | |
510 | ||
511 | static void | |
512 | write_stack_arguments(device *me, | |
513 | char **arg, | |
514 | unsigned_word start_block, | |
515 | unsigned_word end_block, | |
516 | unsigned_word start_arg, | |
517 | unsigned_word end_arg) | |
518 | { | |
519 | DTRACE(stack, | |
520 | ("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", | |
521 | device_name(me), (long)arg, (long)start_block, (long)end_block, (long)start_arg, (long)end_arg)); | |
522 | if (arg == NULL) | |
523 | device_error(me, "Attempt to write a null array onto the stack\n"); | |
524 | /* only copy in arguments, memory is already zero */ | |
525 | for (; *arg != NULL; arg++) { | |
526 | int len = strlen(*arg)+1; | |
527 | unsigned_word target_start_block; | |
528 | DTRACE(stack, | |
529 | ("write_stack_arguments() write %s=%s at %s=0x%lx %s=0x%lx %s=0x%lx\n", | |
530 | "**arg", *arg, "start_block", (long)start_block, | |
531 | "len", (long)len, "start_arg", (long)start_arg)); | |
532 | if (psim_write_memory(device_system(me), 0, *arg, | |
533 | start_block, len, | |
534 | 0/*violate_readonly*/) != len) | |
535 | device_error(me, "Write of **arg (%s) at 0x%lx of stack failed\n", | |
536 | *arg, (unsigned long)start_block); | |
537 | target_start_block = H2T_word(start_block); | |
538 | if (psim_write_memory(device_system(me), 0, &target_start_block, | |
539 | start_arg, sizeof(target_start_block), | |
540 | 0) != sizeof(target_start_block)) | |
541 | device_error(me, "Write of *arg onto stack failed\n"); | |
542 | start_block += ALIGN_8(len); | |
543 | start_arg += sizeof(start_block); | |
544 | } | |
545 | start_arg += sizeof(start_block); /*the null at the end*/ | |
546 | if (start_block != end_block | |
547 | || ALIGN_8(start_arg) != end_arg) | |
548 | device_error(me, "Probable corrpution of stack arguments\n"); | |
549 | DTRACE(stack, ("write_stack_arguments() = void\n")); | |
550 | } | |
551 | ||
552 | static void | |
553 | create_ppc_elf_stack_frame(device *me, | |
554 | unsigned_word bottom_of_stack, | |
555 | char **argv, | |
556 | char **envp) | |
557 | { | |
558 | /* fixme - this is over aligned */ | |
559 | ||
560 | /* information block */ | |
561 | const unsigned sizeof_envp_block = sizeof_argument_strings(envp); | |
562 | const unsigned_word start_envp_block = bottom_of_stack - sizeof_envp_block; | |
563 | const unsigned sizeof_argv_block = sizeof_argument_strings(argv); | |
564 | const unsigned_word start_argv_block = start_envp_block - sizeof_argv_block; | |
565 | ||
566 | /* auxiliary vector - contains only one entry */ | |
567 | const unsigned sizeof_aux_entry = 2*sizeof(unsigned_word); /* magic */ | |
568 | const unsigned_word start_aux = start_argv_block - ALIGN_8(sizeof_aux_entry); | |
569 | ||
570 | /* environment points (including null sentinal) */ | |
571 | const unsigned sizeof_envp = sizeof_arguments(envp); | |
572 | const unsigned_word start_envp = start_aux - sizeof_envp; | |
573 | ||
574 | /* argument pointers (including null sentinal) */ | |
575 | const int argc = number_of_arguments(argv); | |
576 | const unsigned sizeof_argv = sizeof_arguments(argv); | |
577 | const unsigned_word start_argv = start_envp - sizeof_argv; | |
578 | ||
579 | /* link register save address - alligned to a 16byte boundary */ | |
580 | const unsigned_word top_of_stack = ((start_argv | |
581 | - 2 * sizeof(unsigned_word)) | |
582 | & ~0xf); | |
583 | ||
584 | /* install arguments on stack */ | |
585 | write_stack_arguments(me, envp, | |
586 | start_envp_block, bottom_of_stack, | |
587 | start_envp, start_aux); | |
588 | write_stack_arguments(me, argv, | |
589 | start_argv_block, start_envp_block, | |
590 | start_argv, start_envp); | |
591 | ||
592 | /* set up the registers */ | |
601cecf0 AC |
593 | ASSERT (psim_write_register(device_system(me), -1, |
594 | &top_of_stack, "sp", cooked_transfer) > 0); | |
595 | ASSERT (psim_write_register(device_system(me), -1, | |
596 | &argc, "r3", cooked_transfer) > 0); | |
597 | ASSERT (psim_write_register(device_system(me), -1, | |
598 | &start_argv, "r4", cooked_transfer) > 0); | |
599 | ASSERT (psim_write_register(device_system(me), -1, | |
600 | &start_envp, "r5", cooked_transfer) > 0); | |
601 | ASSERT (psim_write_register(device_system(me), -1, | |
602 | &start_aux, "r6", cooked_transfer) > 0); | |
c906108c SS |
603 | } |
604 | ||
605 | static void | |
606 | create_ppc_aix_stack_frame(device *me, | |
607 | unsigned_word bottom_of_stack, | |
608 | char **argv, | |
609 | char **envp) | |
610 | { | |
611 | unsigned_word core_envp; | |
612 | unsigned_word core_argv; | |
613 | unsigned_word core_argc; | |
614 | unsigned_word core_aux; | |
615 | unsigned_word top_of_stack; | |
616 | ||
617 | /* cheat - create an elf stack frame */ | |
618 | create_ppc_elf_stack_frame(me, bottom_of_stack, argv, envp); | |
619 | ||
620 | /* extract argument addresses from registers */ | |
601cecf0 AC |
621 | ASSERT (psim_read_register(device_system(me), 0, |
622 | &top_of_stack, "r1", cooked_transfer) > 0); | |
623 | ASSERT (psim_read_register(device_system(me), 0, | |
624 | &core_argc, "r3", cooked_transfer) > 0); | |
625 | ASSERT (psim_read_register(device_system(me), 0, | |
626 | &core_argv, "r4", cooked_transfer) > 0); | |
627 | ASSERT (psim_read_register(device_system(me), 0, | |
628 | &core_envp, "r5", cooked_transfer) > 0); | |
629 | ASSERT (psim_read_register(device_system(me), 0, | |
630 | &core_aux, "r6", cooked_transfer) > 0); | |
c906108c SS |
631 | |
632 | /* extract arguments from registers */ | |
633 | device_error(me, "Unfinished procedure create_ppc_aix_stack_frame\n"); | |
634 | } | |
635 | ||
636 | ||
637 | static void | |
638 | create_ppc_chirp_bootargs(device *me, | |
639 | char **argv) | |
640 | { | |
641 | /* concat the arguments */ | |
642 | char args[1024]; | |
643 | char **chp = argv + 1; | |
644 | args[0] = '\0'; | |
645 | while (*chp != NULL) { | |
646 | if (strlen(args) > 0) | |
647 | strcat(args, " "); | |
648 | if (strlen(args) + strlen(*chp) >= sizeof(args)) | |
649 | device_error(me, "buffer overflow"); | |
650 | strcat(args, *chp); | |
651 | chp++; | |
652 | } | |
653 | ||
654 | /* set the arguments property */ | |
655 | tree_parse(me, "/chosen/bootargs \"%s", args); | |
656 | } | |
657 | ||
658 | ||
659 | static int | |
660 | hw_stack_ioctl(device *me, | |
661 | cpu *processor, | |
662 | unsigned_word cia, | |
663 | device_ioctl_request request, | |
664 | va_list ap) | |
665 | { | |
666 | switch (request) { | |
667 | case device_ioctl_create_stack: | |
668 | { | |
669 | unsigned_word stack_pointer = va_arg(ap, unsigned_word); | |
670 | char **argv = va_arg(ap, char **); | |
671 | char **envp = va_arg(ap, char **); | |
672 | const char *stack_type; | |
673 | DTRACE(stack, | |
674 | ("stack_ioctl_callback(me=0x%lx:%s processor=0x%lx cia=0x%lx argv=0x%lx envp=0x%lx)\n", | |
675 | (long)me, device_name(me), | |
676 | (long)processor, | |
677 | (long)cia, | |
678 | (long)argv, | |
679 | (long)envp)); | |
680 | stack_type = device_find_string_property(me, "stack-type"); | |
681 | if (strcmp(stack_type, "ppc-elf") == 0) | |
682 | create_ppc_elf_stack_frame(me, stack_pointer, argv, envp); | |
683 | else if (strcmp(stack_type, "ppc-xcoff") == 0) | |
684 | create_ppc_aix_stack_frame(me, stack_pointer, argv, envp); | |
685 | else if (strcmp(stack_type, "chirp") == 0) | |
686 | create_ppc_chirp_bootargs(me, argv); | |
687 | else if (strcmp(stack_type, "none") != 0) | |
688 | device_error(me, "Unknown initial stack frame type %s", stack_type); | |
689 | DTRACE(stack, | |
690 | ("stack_ioctl_callback() = void\n")); | |
691 | break; | |
692 | } | |
693 | default: | |
694 | device_error(me, "Unsupported ioctl requested"); | |
695 | break; | |
696 | } | |
697 | return 0; | |
698 | } | |
699 | ||
700 | static device_callbacks const hw_stack_callbacks = { | |
701 | { NULL, }, | |
702 | { NULL, }, /* address */ | |
703 | { NULL, }, /* IO */ | |
704 | { NULL, }, /* DMA */ | |
705 | { NULL, }, /* interrupt */ | |
706 | { NULL, }, /* unit */ | |
707 | NULL, /* instance */ | |
708 | hw_stack_ioctl, | |
709 | }; | |
710 | ||
711 | const device_descriptor hw_init_device_descriptor[] = { | |
712 | { "file", NULL, &hw_file_callbacks }, | |
713 | { "data", NULL, &hw_data_callbacks }, | |
714 | { "load-binary", NULL, &hw_binary_callbacks }, | |
715 | { "map-binary", NULL, &hw_binary_callbacks }, | |
716 | { "stack", NULL, &hw_stack_callbacks }, | |
717 | { NULL }, | |
718 | }; | |
719 | ||
50427dbf | 720 | #endif /* _HW_INIT_C_ */ |