xref: /linux/scripts/mod/file2alias.c (revision 42fda66387daa53538ae13a2c858396aaf037158)
1 /* Simple code to turn various tables in an ELF file into alias definitions.
2  * This deals with kernel datastructures where they should be
3  * dealt with: in the kernel source.
4  *
5  * Copyright 2002-2003  Rusty Russell, IBM Corporation
6  *           2003       Kai Germaschewski
7  *
8  *
9  * This software may be used and distributed according to the terms
10  * of the GNU General Public License, incorporated herein by reference.
11  */
12 
13 #include "modpost.h"
14 
15 /* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
16  * use either stdint.h or inttypes.h for the rest. */
17 #if KERNEL_ELFCLASS == ELFCLASS32
18 typedef Elf32_Addr	kernel_ulong_t;
19 #define BITS_PER_LONG 32
20 #else
21 typedef Elf64_Addr	kernel_ulong_t;
22 #define BITS_PER_LONG 64
23 #endif
24 #ifdef __sun__
25 #include <inttypes.h>
26 #else
27 #include <stdint.h>
28 #endif
29 
30 #include <ctype.h>
31 
32 typedef uint32_t	__u32;
33 typedef uint16_t	__u16;
34 typedef unsigned char	__u8;
35 
36 /* Big exception to the "don't include kernel headers into userspace, which
37  * even potentially has different endianness and word sizes, since
38  * we handle those differences explicitly below */
39 #include "../../include/linux/mod_devicetable.h"
40 
41 #define ADD(str, sep, cond, field)                              \
42 do {                                                            \
43         strcat(str, sep);                                       \
44         if (cond)                                               \
45                 sprintf(str + strlen(str),                      \
46                         sizeof(field) == 1 ? "%02X" :           \
47                         sizeof(field) == 2 ? "%04X" :           \
48                         sizeof(field) == 4 ? "%08X" : "",       \
49                         field);                                 \
50         else                                                    \
51                 sprintf(str + strlen(str), "*");                \
52 } while(0)
53 
54 /**
55  * Check that sizeof(device_id type) are consistent with size of section
56  * in .o file. If in-consistent then userspace and kernel does not agree
57  * on actual size which is a bug.
58  **/
59 static void device_id_size_check(const char *modname, const char *device_id,
60 				 unsigned long size, unsigned long id_size)
61 {
62 	if (size % id_size || size < id_size) {
63 		fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
64 		      "of the size of section __mod_%s_device_table=%lu.\n"
65 		      "Fix definition of struct %s_device_id "
66 		      "in mod_devicetable.h\n",
67 		      modname, device_id, id_size, device_id, size, device_id);
68 	}
69 }
70 
71 /* USB is special because the bcdDevice can be matched against a numeric range */
72 /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */
73 static void do_usb_entry(struct usb_device_id *id,
74 			 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
75 			 unsigned char range_lo, unsigned char range_hi,
76 			 struct module *mod)
77 {
78 	char alias[500];
79 	strcpy(alias, "usb:");
80 	ADD(alias, "v", id->match_flags&USB_DEVICE_ID_MATCH_VENDOR,
81 	    id->idVendor);
82 	ADD(alias, "p", id->match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
83 	    id->idProduct);
84 
85 	strcat(alias, "d");
86 	if (bcdDevice_initial_digits)
87 		sprintf(alias + strlen(alias), "%0*X",
88 			bcdDevice_initial_digits, bcdDevice_initial);
89 	if (range_lo == range_hi)
90 		sprintf(alias + strlen(alias), "%u", range_lo);
91 	else if (range_lo > 0 || range_hi < 9)
92 		sprintf(alias + strlen(alias), "[%u-%u]", range_lo, range_hi);
93 	if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1))
94 		strcat(alias, "*");
95 
96 	ADD(alias, "dc", id->match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
97 	    id->bDeviceClass);
98 	ADD(alias, "dsc",
99 	    id->match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
100 	    id->bDeviceSubClass);
101 	ADD(alias, "dp",
102 	    id->match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
103 	    id->bDeviceProtocol);
104 	ADD(alias, "ic",
105 	    id->match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
106 	    id->bInterfaceClass);
107 	ADD(alias, "isc",
108 	    id->match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
109 	    id->bInterfaceSubClass);
110 	ADD(alias, "ip",
111 	    id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
112 	    id->bInterfaceProtocol);
113 
114 	/* Always end in a wildcard, for future extension */
115 	if (alias[strlen(alias)-1] != '*')
116 		strcat(alias, "*");
117 	buf_printf(&mod->dev_table_buf,
118 		   "MODULE_ALIAS(\"%s\");\n", alias);
119 }
120 
121 static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod)
122 {
123 	unsigned int devlo, devhi;
124 	unsigned char chi, clo;
125 	int ndigits;
126 
127 	id->match_flags = TO_NATIVE(id->match_flags);
128 	id->idVendor = TO_NATIVE(id->idVendor);
129 	id->idProduct = TO_NATIVE(id->idProduct);
130 
131 	devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
132 		TO_NATIVE(id->bcdDevice_lo) : 0x0U;
133 	devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
134 		TO_NATIVE(id->bcdDevice_hi) : ~0x0U;
135 
136 	/*
137 	 * Some modules (visor) have empty slots as placeholder for
138 	 * run-time specification that results in catch-all alias
139 	 */
140 	if (!(id->idVendor | id->bDeviceClass | id->bInterfaceClass))
141 		return;
142 
143 	/* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
144 	for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
145 		clo = devlo & 0xf;
146 		chi = devhi & 0xf;
147 		if (chi > 9)	/* it's bcd not hex */
148 			chi = 9;
149 		devlo >>= 4;
150 		devhi >>= 4;
151 
152 		if (devlo == devhi || !ndigits) {
153 			do_usb_entry(id, devlo, ndigits, clo, chi, mod);
154 			break;
155 		}
156 
157 		if (clo > 0)
158 			do_usb_entry(id, devlo++, ndigits, clo, 9, mod);
159 
160 		if (chi < 9)
161 			do_usb_entry(id, devhi--, ndigits, 0, chi, mod);
162 	}
163 }
164 
165 static void do_usb_table(void *symval, unsigned long size,
166 			 struct module *mod)
167 {
168 	unsigned int i;
169 	const unsigned long id_size = sizeof(struct usb_device_id);
170 
171 	device_id_size_check(mod->name, "usb", size, id_size);
172 
173 	/* Leave last one: it's the terminator. */
174 	size -= id_size;
175 
176 	for (i = 0; i < size; i += id_size)
177 		do_usb_entry_multi(symval + i, mod);
178 }
179 
180 /* Looks like: ieee1394:venNmoNspNverN */
181 static int do_ieee1394_entry(const char *filename,
182 			     struct ieee1394_device_id *id, char *alias)
183 {
184 	id->match_flags = TO_NATIVE(id->match_flags);
185 	id->vendor_id = TO_NATIVE(id->vendor_id);
186 	id->model_id = TO_NATIVE(id->model_id);
187 	id->specifier_id = TO_NATIVE(id->specifier_id);
188 	id->version = TO_NATIVE(id->version);
189 
190 	strcpy(alias, "ieee1394:");
191 	ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID,
192 	    id->vendor_id);
193 	ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID,
194 	    id->model_id);
195 	ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID,
196 	    id->specifier_id);
197 	ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION,
198 	    id->version);
199 
200 	return 1;
201 }
202 
203 /* Looks like: pci:vNdNsvNsdNbcNscNiN. */
204 static int do_pci_entry(const char *filename,
205 			struct pci_device_id *id, char *alias)
206 {
207 	/* Class field can be divided into these three. */
208 	unsigned char baseclass, subclass, interface,
209 		baseclass_mask, subclass_mask, interface_mask;
210 
211 	id->vendor = TO_NATIVE(id->vendor);
212 	id->device = TO_NATIVE(id->device);
213 	id->subvendor = TO_NATIVE(id->subvendor);
214 	id->subdevice = TO_NATIVE(id->subdevice);
215 	id->class = TO_NATIVE(id->class);
216 	id->class_mask = TO_NATIVE(id->class_mask);
217 
218 	strcpy(alias, "pci:");
219 	ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor);
220 	ADD(alias, "d", id->device != PCI_ANY_ID, id->device);
221 	ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor);
222 	ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice);
223 
224 	baseclass = (id->class) >> 16;
225 	baseclass_mask = (id->class_mask) >> 16;
226 	subclass = (id->class) >> 8;
227 	subclass_mask = (id->class_mask) >> 8;
228 	interface = id->class;
229 	interface_mask = id->class_mask;
230 
231 	if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
232 	    || (subclass_mask != 0 && subclass_mask != 0xFF)
233 	    || (interface_mask != 0 && interface_mask != 0xFF)) {
234 		warn("Can't handle masks in %s:%04X\n",
235 		     filename, id->class_mask);
236 		return 0;
237 	}
238 
239 	ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
240 	ADD(alias, "sc", subclass_mask == 0xFF, subclass);
241 	ADD(alias, "i", interface_mask == 0xFF, interface);
242 	return 1;
243 }
244 
245 /* looks like: "ccw:tNmNdtNdmN" */
246 static int do_ccw_entry(const char *filename,
247 			struct ccw_device_id *id, char *alias)
248 {
249 	id->match_flags = TO_NATIVE(id->match_flags);
250 	id->cu_type = TO_NATIVE(id->cu_type);
251 	id->cu_model = TO_NATIVE(id->cu_model);
252 	id->dev_type = TO_NATIVE(id->dev_type);
253 	id->dev_model = TO_NATIVE(id->dev_model);
254 
255 	strcpy(alias, "ccw:");
256 	ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
257 	    id->cu_type);
258 	ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
259 	    id->cu_model);
260 	ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
261 	    id->dev_type);
262 	ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
263 	    id->dev_model);
264 	return 1;
265 }
266 
267 /* looks like: "ap:tN" */
268 static int do_ap_entry(const char *filename,
269 		       struct ap_device_id *id, char *alias)
270 {
271 	sprintf(alias, "ap:t%02X", id->dev_type);
272 	return 1;
273 }
274 
275 /* Looks like: "serio:tyNprNidNexN" */
276 static int do_serio_entry(const char *filename,
277 			  struct serio_device_id *id, char *alias)
278 {
279 	id->type = TO_NATIVE(id->type);
280 	id->proto = TO_NATIVE(id->proto);
281 	id->id = TO_NATIVE(id->id);
282 	id->extra = TO_NATIVE(id->extra);
283 
284 	strcpy(alias, "serio:");
285 	ADD(alias, "ty", id->type != SERIO_ANY, id->type);
286 	ADD(alias, "pr", id->proto != SERIO_ANY, id->proto);
287 	ADD(alias, "id", id->id != SERIO_ANY, id->id);
288 	ADD(alias, "ex", id->extra != SERIO_ANY, id->extra);
289 
290 	return 1;
291 }
292 
293 /* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
294 static int do_acpi_entry(const char *filename,
295 			struct acpi_device_id *id, char *alias)
296 {
297 	sprintf(alias, "acpi*:%s:", id->id);
298 	return 1;
299 }
300 
301 /* looks like: "pnp:dD" */
302 static int do_pnp_entry(const char *filename,
303 			struct pnp_device_id *id, char *alias)
304 {
305 	sprintf(alias, "pnp:d%s", id->id);
306 	return 1;
307 }
308 
309 /* looks like: "pnp:cCdD..." */
310 static int do_pnp_card_entry(const char *filename,
311 			struct pnp_card_device_id *id, char *alias)
312 {
313 	int i;
314 
315 	sprintf(alias, "pnp:c%s", id->id);
316 	for (i = 0; i < PNP_MAX_DEVICES; i++) {
317 		if (! *id->devs[i].id)
318 			break;
319 		sprintf(alias + strlen(alias), "d%s", id->devs[i].id);
320 	}
321 	return 1;
322 }
323 
324 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
325 static int do_pcmcia_entry(const char *filename,
326 			   struct pcmcia_device_id *id, char *alias)
327 {
328 	unsigned int i;
329 
330 	id->match_flags = TO_NATIVE(id->match_flags);
331 	id->manf_id = TO_NATIVE(id->manf_id);
332 	id->card_id = TO_NATIVE(id->card_id);
333 	id->func_id = TO_NATIVE(id->func_id);
334 	id->function = TO_NATIVE(id->function);
335 	id->device_no = TO_NATIVE(id->device_no);
336 
337 	for (i=0; i<4; i++) {
338 		id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]);
339        }
340 
341        strcpy(alias, "pcmcia:");
342        ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
343 	   id->manf_id);
344        ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
345 	   id->card_id);
346        ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
347 	   id->func_id);
348        ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
349 	   id->function);
350        ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
351 	   id->device_no);
352        ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]);
353        ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]);
354        ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]);
355        ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]);
356 
357        return 1;
358 }
359 
360 
361 
362 static int do_of_entry (const char *filename, struct of_device_id *of, char *alias)
363 {
364     int len;
365     char *tmp;
366     len = sprintf (alias, "of:N%sT%s",
367                     of->name[0] ? of->name : "*",
368                     of->type[0] ? of->type : "*");
369 
370     if (of->compatible[0])
371         sprintf (&alias[len], "%sC%s",
372                      of->type[0] ? "*" : "",
373                      of->compatible);
374 
375     /* Replace all whitespace with underscores */
376     for (tmp = alias; tmp && *tmp; tmp++)
377         if (isspace (*tmp))
378             *tmp = '_';
379 
380     return 1;
381 }
382 
383 static int do_vio_entry(const char *filename, struct vio_device_id *vio,
384 		char *alias)
385 {
386 	char *tmp;
387 
388 	sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*",
389 			vio->compat[0] ? vio->compat : "*");
390 
391 	/* Replace all whitespace with underscores */
392 	for (tmp = alias; tmp && *tmp; tmp++)
393 		if (isspace (*tmp))
394 			*tmp = '_';
395 
396 	return 1;
397 }
398 
399 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
400 
401 static void do_input(char *alias,
402 		     kernel_ulong_t *arr, unsigned int min, unsigned int max)
403 {
404 	unsigned int i;
405 
406 	for (i = min; i < max; i++)
407 		if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
408 			sprintf(alias + strlen(alias), "%X,*", i);
409 }
410 
411 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
412 static int do_input_entry(const char *filename, struct input_device_id *id,
413 			  char *alias)
414 {
415 	sprintf(alias, "input:");
416 
417 	ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype);
418 	ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor);
419 	ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product);
420 	ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version);
421 
422 	sprintf(alias + strlen(alias), "-e*");
423 	if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT)
424 		do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX);
425 	sprintf(alias + strlen(alias), "k*");
426 	if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
427 		do_input(alias, id->keybit,
428 			 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
429 			 INPUT_DEVICE_ID_KEY_MAX);
430 	sprintf(alias + strlen(alias), "r*");
431 	if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT)
432 		do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX);
433 	sprintf(alias + strlen(alias), "a*");
434 	if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
435 		do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
436 	sprintf(alias + strlen(alias), "m*");
437 	if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT)
438 		do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
439 	sprintf(alias + strlen(alias), "l*");
440 	if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
441 		do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
442 	sprintf(alias + strlen(alias), "s*");
443 	if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
444 		do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
445 	sprintf(alias + strlen(alias), "f*");
446 	if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT)
447 		do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
448 	sprintf(alias + strlen(alias), "w*");
449 	if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT)
450 		do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX);
451 	return 1;
452 }
453 
454 static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa,
455 		char *alias)
456 {
457 	if (eisa->sig[0])
458 		sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig);
459 	return 1;
460 }
461 
462 /* Looks like: parisc:tNhvNrevNsvN */
463 static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
464 		char *alias)
465 {
466 	id->hw_type = TO_NATIVE(id->hw_type);
467 	id->hversion = TO_NATIVE(id->hversion);
468 	id->hversion_rev = TO_NATIVE(id->hversion_rev);
469 	id->sversion = TO_NATIVE(id->sversion);
470 
471 	strcpy(alias, "parisc:");
472 	ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type);
473 	ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion);
474 	ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev);
475 	ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion);
476 
477 	return 1;
478 }
479 
480 /* Looks like: sdio:cNvNdN. */
481 static int do_sdio_entry(const char *filename,
482 			struct sdio_device_id *id, char *alias)
483 {
484 	id->class = TO_NATIVE(id->class);
485 	id->vendor = TO_NATIVE(id->vendor);
486 	id->device = TO_NATIVE(id->device);
487 
488 	strcpy(alias, "sdio:");
489 	ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class);
490 	ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor);
491 	ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device);
492 	return 1;
493 }
494 
495 /* Looks like: ssb:vNidNrevN. */
496 static int do_ssb_entry(const char *filename,
497 			struct ssb_device_id *id, char *alias)
498 {
499 	id->vendor = TO_NATIVE(id->vendor);
500 	id->coreid = TO_NATIVE(id->coreid);
501 	id->revision = TO_NATIVE(id->revision);
502 
503 	strcpy(alias, "ssb:");
504 	ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor);
505 	ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid);
506 	ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision);
507 	return 1;
508 }
509 
510 /* Ignore any prefix, eg. v850 prepends _ */
511 static inline int sym_is(const char *symbol, const char *name)
512 {
513 	const char *match;
514 
515 	match = strstr(symbol, name);
516 	if (!match)
517 		return 0;
518 	return match[strlen(symbol)] == '\0';
519 }
520 
521 static void do_table(void *symval, unsigned long size,
522 		     unsigned long id_size,
523 		     const char *device_id,
524 		     void *function,
525 		     struct module *mod)
526 {
527 	unsigned int i;
528 	char alias[500];
529 	int (*do_entry)(const char *, void *entry, char *alias) = function;
530 
531 	device_id_size_check(mod->name, device_id, size, id_size);
532 	/* Leave last one: it's the terminator. */
533 	size -= id_size;
534 
535 	for (i = 0; i < size; i += id_size) {
536 		if (do_entry(mod->name, symval+i, alias)) {
537 			/* Always end in a wildcard, for future extension */
538 			if (alias[strlen(alias)-1] != '*')
539 				strcat(alias, "*");
540 			buf_printf(&mod->dev_table_buf,
541 				   "MODULE_ALIAS(\"%s\");\n", alias);
542 		}
543 	}
544 }
545 
546 /* Create MODULE_ALIAS() statements.
547  * At this time, we cannot write the actual output C source yet,
548  * so we write into the mod->dev_table_buf buffer. */
549 void handle_moddevtable(struct module *mod, struct elf_info *info,
550 			Elf_Sym *sym, const char *symname)
551 {
552 	void *symval;
553 
554 	/* We're looking for a section relative symbol */
555 	if (!sym->st_shndx || sym->st_shndx >= info->hdr->e_shnum)
556 		return;
557 
558 	symval = (void *)info->hdr
559 		+ info->sechdrs[sym->st_shndx].sh_offset
560 		+ sym->st_value;
561 
562 	if (sym_is(symname, "__mod_pci_device_table"))
563 		do_table(symval, sym->st_size,
564 			 sizeof(struct pci_device_id), "pci",
565 			 do_pci_entry, mod);
566 	else if (sym_is(symname, "__mod_usb_device_table"))
567 		/* special case to handle bcdDevice ranges */
568 		do_usb_table(symval, sym->st_size, mod);
569 	else if (sym_is(symname, "__mod_ieee1394_device_table"))
570 		do_table(symval, sym->st_size,
571 			 sizeof(struct ieee1394_device_id), "ieee1394",
572 			 do_ieee1394_entry, mod);
573 	else if (sym_is(symname, "__mod_ccw_device_table"))
574 		do_table(symval, sym->st_size,
575 			 sizeof(struct ccw_device_id), "ccw",
576 			 do_ccw_entry, mod);
577 	else if (sym_is(symname, "__mod_ap_device_table"))
578 		do_table(symval, sym->st_size,
579 			 sizeof(struct ap_device_id), "ap",
580 			 do_ap_entry, mod);
581 	else if (sym_is(symname, "__mod_serio_device_table"))
582 		do_table(symval, sym->st_size,
583 			 sizeof(struct serio_device_id), "serio",
584 			 do_serio_entry, mod);
585 	else if (sym_is(symname, "__mod_acpi_device_table"))
586 		do_table(symval, sym->st_size,
587 			 sizeof(struct acpi_device_id), "acpi",
588 			 do_acpi_entry, mod);
589 	else if (sym_is(symname, "__mod_pnp_device_table"))
590 		do_table(symval, sym->st_size,
591 			 sizeof(struct pnp_device_id), "pnp",
592 			 do_pnp_entry, mod);
593 	else if (sym_is(symname, "__mod_pnp_card_device_table"))
594 		do_table(symval, sym->st_size,
595 			 sizeof(struct pnp_card_device_id), "pnp_card",
596 			 do_pnp_card_entry, mod);
597 	else if (sym_is(symname, "__mod_pcmcia_device_table"))
598 		do_table(symval, sym->st_size,
599 			 sizeof(struct pcmcia_device_id), "pcmcia",
600 			 do_pcmcia_entry, mod);
601         else if (sym_is(symname, "__mod_of_device_table"))
602 		do_table(symval, sym->st_size,
603 			 sizeof(struct of_device_id), "of",
604 			 do_of_entry, mod);
605         else if (sym_is(symname, "__mod_vio_device_table"))
606 		do_table(symval, sym->st_size,
607 			 sizeof(struct vio_device_id), "vio",
608 			 do_vio_entry, mod);
609 	else if (sym_is(symname, "__mod_input_device_table"))
610 		do_table(symval, sym->st_size,
611 			 sizeof(struct input_device_id), "input",
612 			 do_input_entry, mod);
613 	else if (sym_is(symname, "__mod_eisa_device_table"))
614 		do_table(symval, sym->st_size,
615 			 sizeof(struct eisa_device_id), "eisa",
616 			 do_eisa_entry, mod);
617 	else if (sym_is(symname, "__mod_parisc_device_table"))
618 		do_table(symval, sym->st_size,
619 			 sizeof(struct parisc_device_id), "parisc",
620 			 do_parisc_entry, mod);
621 	else if (sym_is(symname, "__mod_sdio_device_table"))
622 		do_table(symval, sym->st_size,
623 			 sizeof(struct sdio_device_id), "sdio",
624 			 do_sdio_entry, mod);
625 	else if (sym_is(symname, "__mod_ssb_device_table"))
626 		do_table(symval, sym->st_size,
627 			 sizeof(struct ssb_device_id), "ssb",
628 			 do_ssb_entry, mod);
629 }
630 
631 /* Now add out buffered information to the generated C source */
632 void add_moddevtable(struct buffer *buf, struct module *mod)
633 {
634 	buf_printf(buf, "\n");
635 	buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
636 	free(mod->dev_table_buf.p);
637 }
638