file2alias.c 22 KB

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  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. #include "modpost.h"
  13. /* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
  14. * use either stdint.h or inttypes.h for the rest. */
  15. #if KERNEL_ELFCLASS == ELFCLASS32
  16. typedef Elf32_Addr kernel_ulong_t;
  17. #define BITS_PER_LONG 32
  18. #else
  19. typedef Elf64_Addr kernel_ulong_t;
  20. #define BITS_PER_LONG 64
  21. #endif
  22. #ifdef __sun__
  23. #include <inttypes.h>
  24. #else
  25. #include <stdint.h>
  26. #endif
  27. #include <ctype.h>
  28. typedef uint32_t __u32;
  29. typedef uint16_t __u16;
  30. typedef unsigned char __u8;
  31. /* Big exception to the "don't include kernel headers into userspace, which
  32. * even potentially has different endianness and word sizes, since
  33. * we handle those differences explicitly below */
  34. #include "../../include/linux/mod_devicetable.h"
  35. #define ADD(str, sep, cond, field) \
  36. do { \
  37. strcat(str, sep); \
  38. if (cond) \
  39. sprintf(str + strlen(str), \
  40. sizeof(field) == 1 ? "%02X" : \
  41. sizeof(field) == 2 ? "%04X" : \
  42. sizeof(field) == 4 ? "%08X" : "", \
  43. field); \
  44. else \
  45. sprintf(str + strlen(str), "*"); \
  46. } while(0)
  47. unsigned int cross_build = 0;
  48. /**
  49. * Check that sizeof(device_id type) are consistent with size of section
  50. * in .o file. If in-consistent then userspace and kernel does not agree
  51. * on actual size which is a bug.
  52. * Also verify that the final entry in the table is all zeros.
  53. * Ignore both checks if build host differ from target host and size differs.
  54. **/
  55. static void device_id_check(const char *modname, const char *device_id,
  56. unsigned long size, unsigned long id_size,
  57. void *symval)
  58. {
  59. int i;
  60. if (size % id_size || size < id_size) {
  61. if (cross_build != 0)
  62. return;
  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. /* Verify last one is a terminator */
  70. for (i = 0; i < id_size; i++ ) {
  71. if (*(uint8_t*)(symval+size-id_size+i)) {
  72. fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
  73. "The last of %lu is:\n",
  74. modname, device_id, id_size, size / id_size);
  75. for (i = 0; i < id_size; i++ )
  76. fprintf(stderr,"0x%02x ",
  77. *(uint8_t*)(symval+size-id_size+i) );
  78. fprintf(stderr,"\n");
  79. fatal("%s: struct %s_device_id is not terminated "
  80. "with a NULL entry!\n", modname, device_id);
  81. }
  82. }
  83. }
  84. /* USB is special because the bcdDevice can be matched against a numeric range */
  85. /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */
  86. static void do_usb_entry(struct usb_device_id *id,
  87. unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
  88. unsigned char range_lo, unsigned char range_hi,
  89. struct module *mod)
  90. {
  91. char alias[500];
  92. strcpy(alias, "usb:");
  93. ADD(alias, "v", id->match_flags&USB_DEVICE_ID_MATCH_VENDOR,
  94. id->idVendor);
  95. ADD(alias, "p", id->match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
  96. id->idProduct);
  97. strcat(alias, "d");
  98. if (bcdDevice_initial_digits)
  99. sprintf(alias + strlen(alias), "%0*X",
  100. bcdDevice_initial_digits, bcdDevice_initial);
  101. if (range_lo == range_hi)
  102. sprintf(alias + strlen(alias), "%u", range_lo);
  103. else if (range_lo > 0 || range_hi < 9)
  104. sprintf(alias + strlen(alias), "[%u-%u]", range_lo, range_hi);
  105. if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1))
  106. strcat(alias, "*");
  107. ADD(alias, "dc", id->match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
  108. id->bDeviceClass);
  109. ADD(alias, "dsc",
  110. id->match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
  111. id->bDeviceSubClass);
  112. ADD(alias, "dp",
  113. id->match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
  114. id->bDeviceProtocol);
  115. ADD(alias, "ic",
  116. id->match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
  117. id->bInterfaceClass);
  118. ADD(alias, "isc",
  119. id->match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
  120. id->bInterfaceSubClass);
  121. ADD(alias, "ip",
  122. id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
  123. id->bInterfaceProtocol);
  124. /* Always end in a wildcard, for future extension */
  125. if (alias[strlen(alias)-1] != '*')
  126. strcat(alias, "*");
  127. buf_printf(&mod->dev_table_buf,
  128. "MODULE_ALIAS(\"%s\");\n", alias);
  129. }
  130. static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod)
  131. {
  132. unsigned int devlo, devhi;
  133. unsigned char chi, clo;
  134. int ndigits;
  135. id->match_flags = TO_NATIVE(id->match_flags);
  136. id->idVendor = TO_NATIVE(id->idVendor);
  137. id->idProduct = TO_NATIVE(id->idProduct);
  138. devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
  139. TO_NATIVE(id->bcdDevice_lo) : 0x0U;
  140. devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
  141. TO_NATIVE(id->bcdDevice_hi) : ~0x0U;
  142. /*
  143. * Some modules (visor) have empty slots as placeholder for
  144. * run-time specification that results in catch-all alias
  145. */
  146. if (!(id->idVendor | id->idProduct | id->bDeviceClass | id->bInterfaceClass))
  147. return;
  148. /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
  149. for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
  150. clo = devlo & 0xf;
  151. chi = devhi & 0xf;
  152. if (chi > 9) /* it's bcd not hex */
  153. chi = 9;
  154. devlo >>= 4;
  155. devhi >>= 4;
  156. if (devlo == devhi || !ndigits) {
  157. do_usb_entry(id, devlo, ndigits, clo, chi, mod);
  158. break;
  159. }
  160. if (clo > 0)
  161. do_usb_entry(id, devlo++, ndigits, clo, 9, mod);
  162. if (chi < 9)
  163. do_usb_entry(id, devhi--, ndigits, 0, chi, mod);
  164. }
  165. }
  166. static void do_usb_table(void *symval, unsigned long size,
  167. struct module *mod)
  168. {
  169. unsigned int i;
  170. const unsigned long id_size = sizeof(struct usb_device_id);
  171. device_id_check(mod->name, "usb", size, id_size, symval);
  172. /* Leave last one: it's the terminator. */
  173. size -= id_size;
  174. for (i = 0; i < size; i += id_size)
  175. do_usb_entry_multi(symval + i, mod);
  176. }
  177. /* Looks like: ieee1394:venNmoNspNverN */
  178. static int do_ieee1394_entry(const char *filename,
  179. struct ieee1394_device_id *id, char *alias)
  180. {
  181. id->match_flags = TO_NATIVE(id->match_flags);
  182. id->vendor_id = TO_NATIVE(id->vendor_id);
  183. id->model_id = TO_NATIVE(id->model_id);
  184. id->specifier_id = TO_NATIVE(id->specifier_id);
  185. id->version = TO_NATIVE(id->version);
  186. strcpy(alias, "ieee1394:");
  187. ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID,
  188. id->vendor_id);
  189. ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID,
  190. id->model_id);
  191. ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID,
  192. id->specifier_id);
  193. ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION,
  194. id->version);
  195. return 1;
  196. }
  197. /* Looks like: pci:vNdNsvNsdNbcNscNiN. */
  198. static int do_pci_entry(const char *filename,
  199. struct pci_device_id *id, char *alias)
  200. {
  201. /* Class field can be divided into these three. */
  202. unsigned char baseclass, subclass, interface,
  203. baseclass_mask, subclass_mask, interface_mask;
  204. id->vendor = TO_NATIVE(id->vendor);
  205. id->device = TO_NATIVE(id->device);
  206. id->subvendor = TO_NATIVE(id->subvendor);
  207. id->subdevice = TO_NATIVE(id->subdevice);
  208. id->class = TO_NATIVE(id->class);
  209. id->class_mask = TO_NATIVE(id->class_mask);
  210. strcpy(alias, "pci:");
  211. ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor);
  212. ADD(alias, "d", id->device != PCI_ANY_ID, id->device);
  213. ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor);
  214. ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice);
  215. baseclass = (id->class) >> 16;
  216. baseclass_mask = (id->class_mask) >> 16;
  217. subclass = (id->class) >> 8;
  218. subclass_mask = (id->class_mask) >> 8;
  219. interface = id->class;
  220. interface_mask = id->class_mask;
  221. if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
  222. || (subclass_mask != 0 && subclass_mask != 0xFF)
  223. || (interface_mask != 0 && interface_mask != 0xFF)) {
  224. warn("Can't handle masks in %s:%04X\n",
  225. filename, id->class_mask);
  226. return 0;
  227. }
  228. ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
  229. ADD(alias, "sc", subclass_mask == 0xFF, subclass);
  230. ADD(alias, "i", interface_mask == 0xFF, interface);
  231. return 1;
  232. }
  233. /* looks like: "ccw:tNmNdtNdmN" */
  234. static int do_ccw_entry(const char *filename,
  235. struct ccw_device_id *id, char *alias)
  236. {
  237. id->match_flags = TO_NATIVE(id->match_flags);
  238. id->cu_type = TO_NATIVE(id->cu_type);
  239. id->cu_model = TO_NATIVE(id->cu_model);
  240. id->dev_type = TO_NATIVE(id->dev_type);
  241. id->dev_model = TO_NATIVE(id->dev_model);
  242. strcpy(alias, "ccw:");
  243. ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
  244. id->cu_type);
  245. ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
  246. id->cu_model);
  247. ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
  248. id->dev_type);
  249. ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
  250. id->dev_model);
  251. return 1;
  252. }
  253. /* looks like: "ap:tN" */
  254. static int do_ap_entry(const char *filename,
  255. struct ap_device_id *id, char *alias)
  256. {
  257. sprintf(alias, "ap:t%02X", id->dev_type);
  258. return 1;
  259. }
  260. /* Looks like: "serio:tyNprNidNexN" */
  261. static int do_serio_entry(const char *filename,
  262. struct serio_device_id *id, char *alias)
  263. {
  264. id->type = TO_NATIVE(id->type);
  265. id->proto = TO_NATIVE(id->proto);
  266. id->id = TO_NATIVE(id->id);
  267. id->extra = TO_NATIVE(id->extra);
  268. strcpy(alias, "serio:");
  269. ADD(alias, "ty", id->type != SERIO_ANY, id->type);
  270. ADD(alias, "pr", id->proto != SERIO_ANY, id->proto);
  271. ADD(alias, "id", id->id != SERIO_ANY, id->id);
  272. ADD(alias, "ex", id->extra != SERIO_ANY, id->extra);
  273. return 1;
  274. }
  275. /* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
  276. static int do_acpi_entry(const char *filename,
  277. struct acpi_device_id *id, char *alias)
  278. {
  279. sprintf(alias, "acpi*:%s:", id->id);
  280. return 1;
  281. }
  282. /* looks like: "pnp:dD" */
  283. static int do_pnp_entry(const char *filename,
  284. struct pnp_device_id *id, char *alias)
  285. {
  286. sprintf(alias, "pnp:d%s", id->id);
  287. return 1;
  288. }
  289. /* looks like: "pnp:cCdD..." */
  290. static int do_pnp_card_entry(const char *filename,
  291. struct pnp_card_device_id *id, char *alias)
  292. {
  293. int i;
  294. sprintf(alias, "pnp:c%s", id->id);
  295. for (i = 0; i < PNP_MAX_DEVICES; i++) {
  296. if (! *id->devs[i].id)
  297. break;
  298. sprintf(alias + strlen(alias), "d%s", id->devs[i].id);
  299. }
  300. return 1;
  301. }
  302. /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
  303. static int do_pcmcia_entry(const char *filename,
  304. struct pcmcia_device_id *id, char *alias)
  305. {
  306. unsigned int i;
  307. id->match_flags = TO_NATIVE(id->match_flags);
  308. id->manf_id = TO_NATIVE(id->manf_id);
  309. id->card_id = TO_NATIVE(id->card_id);
  310. id->func_id = TO_NATIVE(id->func_id);
  311. id->function = TO_NATIVE(id->function);
  312. id->device_no = TO_NATIVE(id->device_no);
  313. for (i=0; i<4; i++) {
  314. id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]);
  315. }
  316. strcpy(alias, "pcmcia:");
  317. ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
  318. id->manf_id);
  319. ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
  320. id->card_id);
  321. ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
  322. id->func_id);
  323. ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
  324. id->function);
  325. ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
  326. id->device_no);
  327. ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]);
  328. ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]);
  329. ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]);
  330. ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]);
  331. return 1;
  332. }
  333. static int do_of_entry (const char *filename, struct of_device_id *of, char *alias)
  334. {
  335. int len;
  336. char *tmp;
  337. len = sprintf (alias, "of:N%sT%s",
  338. of->name[0] ? of->name : "*",
  339. of->type[0] ? of->type : "*");
  340. if (of->compatible[0])
  341. sprintf (&alias[len], "%sC%s",
  342. of->type[0] ? "*" : "",
  343. of->compatible);
  344. /* Replace all whitespace with underscores */
  345. for (tmp = alias; tmp && *tmp; tmp++)
  346. if (isspace (*tmp))
  347. *tmp = '_';
  348. return 1;
  349. }
  350. static int do_vio_entry(const char *filename, struct vio_device_id *vio,
  351. char *alias)
  352. {
  353. char *tmp;
  354. sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*",
  355. vio->compat[0] ? vio->compat : "*");
  356. /* Replace all whitespace with underscores */
  357. for (tmp = alias; tmp && *tmp; tmp++)
  358. if (isspace (*tmp))
  359. *tmp = '_';
  360. return 1;
  361. }
  362. #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
  363. static void do_input(char *alias,
  364. kernel_ulong_t *arr, unsigned int min, unsigned int max)
  365. {
  366. unsigned int i;
  367. for (i = min; i < max; i++)
  368. if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
  369. sprintf(alias + strlen(alias), "%X,*", i);
  370. }
  371. /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
  372. static int do_input_entry(const char *filename, struct input_device_id *id,
  373. char *alias)
  374. {
  375. sprintf(alias, "input:");
  376. ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype);
  377. ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor);
  378. ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product);
  379. ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version);
  380. sprintf(alias + strlen(alias), "-e*");
  381. if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT)
  382. do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX);
  383. sprintf(alias + strlen(alias), "k*");
  384. if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
  385. do_input(alias, id->keybit,
  386. INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
  387. INPUT_DEVICE_ID_KEY_MAX);
  388. sprintf(alias + strlen(alias), "r*");
  389. if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT)
  390. do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX);
  391. sprintf(alias + strlen(alias), "a*");
  392. if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
  393. do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
  394. sprintf(alias + strlen(alias), "m*");
  395. if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT)
  396. do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
  397. sprintf(alias + strlen(alias), "l*");
  398. if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
  399. do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
  400. sprintf(alias + strlen(alias), "s*");
  401. if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
  402. do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
  403. sprintf(alias + strlen(alias), "f*");
  404. if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT)
  405. do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
  406. sprintf(alias + strlen(alias), "w*");
  407. if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT)
  408. do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX);
  409. return 1;
  410. }
  411. static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa,
  412. char *alias)
  413. {
  414. if (eisa->sig[0])
  415. sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig);
  416. return 1;
  417. }
  418. /* Looks like: parisc:tNhvNrevNsvN */
  419. static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
  420. char *alias)
  421. {
  422. id->hw_type = TO_NATIVE(id->hw_type);
  423. id->hversion = TO_NATIVE(id->hversion);
  424. id->hversion_rev = TO_NATIVE(id->hversion_rev);
  425. id->sversion = TO_NATIVE(id->sversion);
  426. strcpy(alias, "parisc:");
  427. ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type);
  428. ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion);
  429. ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev);
  430. ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion);
  431. return 1;
  432. }
  433. /* Looks like: sdio:cNvNdN. */
  434. static int do_sdio_entry(const char *filename,
  435. struct sdio_device_id *id, char *alias)
  436. {
  437. id->class = TO_NATIVE(id->class);
  438. id->vendor = TO_NATIVE(id->vendor);
  439. id->device = TO_NATIVE(id->device);
  440. strcpy(alias, "sdio:");
  441. ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class);
  442. ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor);
  443. ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device);
  444. return 1;
  445. }
  446. /* Looks like: ssb:vNidNrevN. */
  447. static int do_ssb_entry(const char *filename,
  448. struct ssb_device_id *id, char *alias)
  449. {
  450. id->vendor = TO_NATIVE(id->vendor);
  451. id->coreid = TO_NATIVE(id->coreid);
  452. id->revision = TO_NATIVE(id->revision);
  453. strcpy(alias, "ssb:");
  454. ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor);
  455. ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid);
  456. ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision);
  457. return 1;
  458. }
  459. /* Looks like: virtio:dNvN */
  460. static int do_virtio_entry(const char *filename, struct virtio_device_id *id,
  461. char *alias)
  462. {
  463. id->device = TO_NATIVE(id->device);
  464. id->vendor = TO_NATIVE(id->vendor);
  465. strcpy(alias, "virtio:");
  466. ADD(alias, "d", 1, id->device);
  467. ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor);
  468. return 1;
  469. }
  470. /* Ignore any prefix, eg. v850 prepends _ */
  471. static inline int sym_is(const char *symbol, const char *name)
  472. {
  473. const char *match;
  474. match = strstr(symbol, name);
  475. if (!match)
  476. return 0;
  477. return match[strlen(symbol)] == '\0';
  478. }
  479. static void do_table(void *symval, unsigned long size,
  480. unsigned long id_size,
  481. const char *device_id,
  482. void *function,
  483. struct module *mod)
  484. {
  485. unsigned int i;
  486. char alias[500];
  487. int (*do_entry)(const char *, void *entry, char *alias) = function;
  488. device_id_check(mod->name, device_id, size, id_size, symval);
  489. /* Leave last one: it's the terminator. */
  490. size -= id_size;
  491. for (i = 0; i < size; i += id_size) {
  492. if (do_entry(mod->name, symval+i, alias)) {
  493. /* Always end in a wildcard, for future extension */
  494. if (alias[strlen(alias)-1] != '*')
  495. strcat(alias, "*");
  496. buf_printf(&mod->dev_table_buf,
  497. "MODULE_ALIAS(\"%s\");\n", alias);
  498. }
  499. }
  500. }
  501. /* Create MODULE_ALIAS() statements.
  502. * At this time, we cannot write the actual output C source yet,
  503. * so we write into the mod->dev_table_buf buffer. */
  504. void handle_moddevtable(struct module *mod, struct elf_info *info,
  505. Elf_Sym *sym, const char *symname)
  506. {
  507. void *symval;
  508. char *zeros = NULL;
  509. /* We're looking for a section relative symbol */
  510. if (!sym->st_shndx || sym->st_shndx >= info->hdr->e_shnum)
  511. return;
  512. /* Handle all-NULL symbols allocated into .bss */
  513. if (info->sechdrs[sym->st_shndx].sh_type & SHT_NOBITS) {
  514. zeros = calloc(1, sym->st_size);
  515. symval = zeros;
  516. } else {
  517. symval = (void *)info->hdr
  518. + info->sechdrs[sym->st_shndx].sh_offset
  519. + sym->st_value;
  520. }
  521. if (sym_is(symname, "__mod_pci_device_table"))
  522. do_table(symval, sym->st_size,
  523. sizeof(struct pci_device_id), "pci",
  524. do_pci_entry, mod);
  525. else if (sym_is(symname, "__mod_usb_device_table"))
  526. /* special case to handle bcdDevice ranges */
  527. do_usb_table(symval, sym->st_size, mod);
  528. else if (sym_is(symname, "__mod_ieee1394_device_table"))
  529. do_table(symval, sym->st_size,
  530. sizeof(struct ieee1394_device_id), "ieee1394",
  531. do_ieee1394_entry, mod);
  532. else if (sym_is(symname, "__mod_ccw_device_table"))
  533. do_table(symval, sym->st_size,
  534. sizeof(struct ccw_device_id), "ccw",
  535. do_ccw_entry, mod);
  536. else if (sym_is(symname, "__mod_ap_device_table"))
  537. do_table(symval, sym->st_size,
  538. sizeof(struct ap_device_id), "ap",
  539. do_ap_entry, mod);
  540. else if (sym_is(symname, "__mod_serio_device_table"))
  541. do_table(symval, sym->st_size,
  542. sizeof(struct serio_device_id), "serio",
  543. do_serio_entry, mod);
  544. else if (sym_is(symname, "__mod_acpi_device_table"))
  545. do_table(symval, sym->st_size,
  546. sizeof(struct acpi_device_id), "acpi",
  547. do_acpi_entry, mod);
  548. else if (sym_is(symname, "__mod_pnp_device_table"))
  549. do_table(symval, sym->st_size,
  550. sizeof(struct pnp_device_id), "pnp",
  551. do_pnp_entry, mod);
  552. else if (sym_is(symname, "__mod_pnp_card_device_table"))
  553. do_table(symval, sym->st_size,
  554. sizeof(struct pnp_card_device_id), "pnp_card",
  555. do_pnp_card_entry, mod);
  556. else if (sym_is(symname, "__mod_pcmcia_device_table"))
  557. do_table(symval, sym->st_size,
  558. sizeof(struct pcmcia_device_id), "pcmcia",
  559. do_pcmcia_entry, mod);
  560. else if (sym_is(symname, "__mod_of_device_table"))
  561. do_table(symval, sym->st_size,
  562. sizeof(struct of_device_id), "of",
  563. do_of_entry, mod);
  564. else if (sym_is(symname, "__mod_vio_device_table"))
  565. do_table(symval, sym->st_size,
  566. sizeof(struct vio_device_id), "vio",
  567. do_vio_entry, mod);
  568. else if (sym_is(symname, "__mod_input_device_table"))
  569. do_table(symval, sym->st_size,
  570. sizeof(struct input_device_id), "input",
  571. do_input_entry, mod);
  572. else if (sym_is(symname, "__mod_eisa_device_table"))
  573. do_table(symval, sym->st_size,
  574. sizeof(struct eisa_device_id), "eisa",
  575. do_eisa_entry, mod);
  576. else if (sym_is(symname, "__mod_parisc_device_table"))
  577. do_table(symval, sym->st_size,
  578. sizeof(struct parisc_device_id), "parisc",
  579. do_parisc_entry, mod);
  580. else if (sym_is(symname, "__mod_sdio_device_table"))
  581. do_table(symval, sym->st_size,
  582. sizeof(struct sdio_device_id), "sdio",
  583. do_sdio_entry, mod);
  584. else if (sym_is(symname, "__mod_ssb_device_table"))
  585. do_table(symval, sym->st_size,
  586. sizeof(struct ssb_device_id), "ssb",
  587. do_ssb_entry, mod);
  588. else if (sym_is(symname, "__mod_virtio_device_table"))
  589. do_table(symval, sym->st_size,
  590. sizeof(struct virtio_device_id), "virtio",
  591. do_virtio_entry, mod);
  592. free(zeros);
  593. }
  594. /* Now add out buffered information to the generated C source */
  595. void add_moddevtable(struct buffer *buf, struct module *mod)
  596. {
  597. buf_printf(buf, "\n");
  598. buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
  599. free(mod->dev_table_buf.p);
  600. }