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TOMOYO Linux Cross Reference
Linux/scripts/mod/file2alias.c

Version: ~ [ linux-5.5-rc6 ] ~ [ linux-5.4.11 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.95 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.164 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.209 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.209 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.81 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
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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 
 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 #include <stdbool.h>
 32 
 33 typedef uint32_t        __u32;
 34 typedef uint16_t        __u16;
 35 typedef unsigned char   __u8;
 36 
 37 /* Big exception to the "don't include kernel headers into userspace, which
 38  * even potentially has different endianness and word sizes, since
 39  * we handle those differences explicitly below */
 40 #include "../../include/linux/mod_devicetable.h"
 41 
 42 /* This array collects all instances that use the generic do_table */
 43 struct devtable {
 44         const char *device_id; /* name of table, __mod_<name>_device_table. */
 45         unsigned long id_size;
 46         void *function;
 47 };
 48 
 49 #define ___cat(a,b) a ## b
 50 #define __cat(a,b) ___cat(a,b)
 51 
 52 /* we need some special handling for this host tool running eventually on
 53  * Darwin. The Mach-O section handling is a bit different than ELF section
 54  * handling. The differnces in detail are:
 55  *  a) we have segments which have sections
 56  *  b) we need a API call to get the respective section symbols */
 57 #if defined(__MACH__)
 58 #include <mach-o/getsect.h>
 59 
 60 #define INIT_SECTION(name)  do {                                        \
 61                 unsigned long name ## _len;                             \
 62                 char *__cat(pstart_,name) = getsectdata("__TEXT",       \
 63                         #name, &__cat(name,_len));                      \
 64                 char *__cat(pstop_,name) = __cat(pstart_,name) +        \
 65                         __cat(name, _len);                              \
 66                 __cat(__start_,name) = (void *)__cat(pstart_,name);     \
 67                 __cat(__stop_,name) = (void *)__cat(pstop_,name);       \
 68         } while (0)
 69 #define SECTION(name)   __attribute__((section("__TEXT, " #name)))
 70 
 71 struct devtable **__start___devtable, **__stop___devtable;
 72 #else
 73 #define INIT_SECTION(name) /* no-op for ELF */
 74 #define SECTION(name)   __attribute__((section(#name)))
 75 
 76 /* We construct a table of pointers in an ELF section (pointers generally
 77  * go unpadded by gcc).  ld creates boundary syms for us. */
 78 extern struct devtable *__start___devtable[], *__stop___devtable[];
 79 #endif /* __MACH__ */
 80 
 81 #if __GNUC__ == 3 && __GNUC_MINOR__ < 3
 82 # define __used                 __attribute__((__unused__))
 83 #else
 84 # define __used                 __attribute__((__used__))
 85 #endif
 86 
 87 /* Add a table entry.  We test function type matches while we're here. */
 88 #define ADD_TO_DEVTABLE(device_id, type, function) \
 89         static struct devtable __cat(devtable,__LINE__) = {     \
 90                 device_id + 0*sizeof((function)((const char *)NULL,     \
 91                                                 (type *)NULL,           \
 92                                                 (char *)NULL)),         \
 93                 sizeof(type), (function) };                             \
 94         static struct devtable *SECTION(__devtable) __used \
 95                 __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__)
 96 
 97 #define ADD(str, sep, cond, field)                              \
 98 do {                                                            \
 99         strcat(str, sep);                                       \
100         if (cond)                                               \
101                 sprintf(str + strlen(str),                      \
102                         sizeof(field) == 1 ? "%02X" :           \
103                         sizeof(field) == 2 ? "%04X" :           \
104                         sizeof(field) == 4 ? "%08X" : "",       \
105                         field);                                 \
106         else                                                    \
107                 sprintf(str + strlen(str), "*");                \
108 } while(0)
109 
110 /* Always end in a wildcard, for future extension */
111 static inline void add_wildcard(char *str)
112 {
113         int len = strlen(str);
114 
115         if (str[len - 1] != '*')
116                 strcat(str + len, "*");
117 }
118 
119 unsigned int cross_build = 0;
120 /**
121  * Check that sizeof(device_id type) are consistent with size of section
122  * in .o file. If in-consistent then userspace and kernel does not agree
123  * on actual size which is a bug.
124  * Also verify that the final entry in the table is all zeros.
125  * Ignore both checks if build host differ from target host and size differs.
126  **/
127 static void device_id_check(const char *modname, const char *device_id,
128                             unsigned long size, unsigned long id_size,
129                             void *symval)
130 {
131         int i;
132 
133         if (size % id_size || size < id_size) {
134                 if (cross_build != 0)
135                         return;
136                 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
137                       "of the size of section __mod_%s_device_table=%lu.\n"
138                       "Fix definition of struct %s_device_id "
139                       "in mod_devicetable.h\n",
140                       modname, device_id, id_size, device_id, size, device_id);
141         }
142         /* Verify last one is a terminator */
143         for (i = 0; i < id_size; i++ ) {
144                 if (*(uint8_t*)(symval+size-id_size+i)) {
145                         fprintf(stderr,"%s: struct %s_device_id is %lu bytes.  "
146                                 "The last of %lu is:\n",
147                                 modname, device_id, id_size, size / id_size);
148                         for (i = 0; i < id_size; i++ )
149                                 fprintf(stderr,"0x%02x ",
150                                         *(uint8_t*)(symval+size-id_size+i) );
151                         fprintf(stderr,"\n");
152                         fatal("%s: struct %s_device_id is not terminated "
153                                 "with a NULL entry!\n", modname, device_id);
154                 }
155         }
156 }
157 
158 /* USB is special because the bcdDevice can be matched against a numeric range */
159 /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */
160 static void do_usb_entry(struct usb_device_id *id,
161                          unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
162                          unsigned char range_lo, unsigned char range_hi,
163                          unsigned char max, struct module *mod)
164 {
165         char alias[500];
166         strcpy(alias, "usb:");
167         ADD(alias, "v", id->match_flags&USB_DEVICE_ID_MATCH_VENDOR,
168             id->idVendor);
169         ADD(alias, "p", id->match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
170             id->idProduct);
171 
172         strcat(alias, "d");
173         if (bcdDevice_initial_digits)
174                 sprintf(alias + strlen(alias), "%0*X",
175                         bcdDevice_initial_digits, bcdDevice_initial);
176         if (range_lo == range_hi)
177                 sprintf(alias + strlen(alias), "%X", range_lo);
178         else if (range_lo > 0 || range_hi < max) {
179                 if (range_lo > 0x9 || range_hi < 0xA)
180                         sprintf(alias + strlen(alias),
181                                 "[%X-%X]",
182                                 range_lo,
183                                 range_hi);
184                 else {
185                         sprintf(alias + strlen(alias),
186                                 range_lo < 0x9 ? "[%X-9" : "[%X",
187                                 range_lo);
188                         sprintf(alias + strlen(alias),
189                                 range_hi > 0xA ? "a-%X]" : "%X]",
190                                 range_lo);
191                 }
192         }
193         if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1))
194                 strcat(alias, "*");
195 
196         ADD(alias, "dc", id->match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
197             id->bDeviceClass);
198         ADD(alias, "dsc",
199             id->match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
200             id->bDeviceSubClass);
201         ADD(alias, "dp",
202             id->match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
203             id->bDeviceProtocol);
204         ADD(alias, "ic",
205             id->match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
206             id->bInterfaceClass);
207         ADD(alias, "isc",
208             id->match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
209             id->bInterfaceSubClass);
210         ADD(alias, "ip",
211             id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
212             id->bInterfaceProtocol);
213 
214         add_wildcard(alias);
215         buf_printf(&mod->dev_table_buf,
216                    "MODULE_ALIAS(\"%s\");\n", alias);
217 }
218 
219 /* Handles increment/decrement of BCD formatted integers */
220 /* Returns the previous value, so it works like i++ or i-- */
221 static unsigned int incbcd(unsigned int *bcd,
222                            int inc,
223                            unsigned char max,
224                            size_t chars)
225 {
226         unsigned int init = *bcd, i, j;
227         unsigned long long c, dec = 0;
228 
229         /* If bcd is not in BCD format, just increment */
230         if (max > 0x9) {
231                 *bcd += inc;
232                 return init;
233         }
234 
235         /* Convert BCD to Decimal */
236         for (i=0 ; i < chars ; i++) {
237                 c = (*bcd >> (i << 2)) & 0xf;
238                 c = c > 9 ? 9 : c; /* force to bcd just in case */
239                 for (j=0 ; j < i ; j++)
240                         c = c * 10;
241                 dec += c;
242         }
243 
244         /* Do our increment/decrement */
245         dec += inc;
246         *bcd  = 0;
247 
248         /* Convert back to BCD */
249         for (i=0 ; i < chars ; i++) {
250                 for (c=1,j=0 ; j < i ; j++)
251                         c = c * 10;
252                 c = (dec / c) % 10;
253                 *bcd += c << (i << 2);
254         }
255         return init;
256 }
257 
258 static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod)
259 {
260         unsigned int devlo, devhi;
261         unsigned char chi, clo, max;
262         int ndigits;
263 
264         id->match_flags = TO_NATIVE(id->match_flags);
265         id->idVendor = TO_NATIVE(id->idVendor);
266         id->idProduct = TO_NATIVE(id->idProduct);
267 
268         devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
269                 TO_NATIVE(id->bcdDevice_lo) : 0x0U;
270         devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
271                 TO_NATIVE(id->bcdDevice_hi) : ~0x0U;
272 
273         /* Figure out if this entry is in bcd or hex format */
274         max = 0x9; /* Default to decimal format */
275         for (ndigits = 0 ; ndigits < sizeof(id->bcdDevice_lo) * 2 ; ndigits++) {
276                 clo = (devlo >> (ndigits << 2)) & 0xf;
277                 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
278                 if (clo > max || chi > max) {
279                         max = 0xf;
280                         break;
281                 }
282         }
283 
284         /*
285          * Some modules (visor) have empty slots as placeholder for
286          * run-time specification that results in catch-all alias
287          */
288         if (!(id->idVendor | id->idProduct | id->bDeviceClass | id->bInterfaceClass))
289                 return;
290 
291         /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
292         for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
293                 clo = devlo & 0xf;
294                 chi = devhi & 0xf;
295                 if (chi > max)  /* If we are in bcd mode, truncate if necessary */
296                         chi = max;
297                 devlo >>= 4;
298                 devhi >>= 4;
299 
300                 if (devlo == devhi || !ndigits) {
301                         do_usb_entry(id, devlo, ndigits, clo, chi, max, mod);
302                         break;
303                 }
304 
305                 if (clo > 0x0)
306                         do_usb_entry(id,
307                                      incbcd(&devlo, 1, max,
308                                             sizeof(id->bcdDevice_lo) * 2),
309                                      ndigits, clo, max, max, mod);
310 
311                 if (chi < max)
312                         do_usb_entry(id,
313                                      incbcd(&devhi, -1, max,
314                                             sizeof(id->bcdDevice_lo) * 2),
315                                      ndigits, 0x0, chi, max, mod);
316         }
317 }
318 
319 static void do_usb_table(void *symval, unsigned long size,
320                          struct module *mod)
321 {
322         unsigned int i;
323         const unsigned long id_size = sizeof(struct usb_device_id);
324 
325         device_id_check(mod->name, "usb", size, id_size, symval);
326 
327         /* Leave last one: it's the terminator. */
328         size -= id_size;
329 
330         for (i = 0; i < size; i += id_size)
331                 do_usb_entry_multi(symval + i, mod);
332 }
333 
334 /* Looks like: hid:bNvNpN */
335 static int do_hid_entry(const char *filename,
336                              struct hid_device_id *id, char *alias)
337 {
338         id->bus = TO_NATIVE(id->bus);
339         id->group = TO_NATIVE(id->group);
340         id->vendor = TO_NATIVE(id->vendor);
341         id->product = TO_NATIVE(id->product);
342 
343         sprintf(alias, "hid:");
344         ADD(alias, "b", id->bus != HID_BUS_ANY, id->bus);
345         ADD(alias, "g", id->group != HID_GROUP_ANY, id->group);
346         ADD(alias, "v", id->vendor != HID_ANY_ID, id->vendor);
347         ADD(alias, "p", id->product != HID_ANY_ID, id->product);
348 
349         return 1;
350 }
351 ADD_TO_DEVTABLE("hid", struct hid_device_id, do_hid_entry);
352 
353 /* Looks like: ieee1394:venNmoNspNverN */
354 static int do_ieee1394_entry(const char *filename,
355                              struct ieee1394_device_id *id, char *alias)
356 {
357         id->match_flags = TO_NATIVE(id->match_flags);
358         id->vendor_id = TO_NATIVE(id->vendor_id);
359         id->model_id = TO_NATIVE(id->model_id);
360         id->specifier_id = TO_NATIVE(id->specifier_id);
361         id->version = TO_NATIVE(id->version);
362 
363         strcpy(alias, "ieee1394:");
364         ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID,
365             id->vendor_id);
366         ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID,
367             id->model_id);
368         ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID,
369             id->specifier_id);
370         ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION,
371             id->version);
372 
373         add_wildcard(alias);
374         return 1;
375 }
376 ADD_TO_DEVTABLE("ieee1394", struct ieee1394_device_id, do_ieee1394_entry);
377 
378 /* Looks like: pci:vNdNsvNsdNbcNscNiN. */
379 static int do_pci_entry(const char *filename,
380                         struct pci_device_id *id, char *alias)
381 {
382         /* Class field can be divided into these three. */
383         unsigned char baseclass, subclass, interface,
384                 baseclass_mask, subclass_mask, interface_mask;
385 
386         id->vendor = TO_NATIVE(id->vendor);
387         id->device = TO_NATIVE(id->device);
388         id->subvendor = TO_NATIVE(id->subvendor);
389         id->subdevice = TO_NATIVE(id->subdevice);
390         id->class = TO_NATIVE(id->class);
391         id->class_mask = TO_NATIVE(id->class_mask);
392 
393         strcpy(alias, "pci:");
394         ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor);
395         ADD(alias, "d", id->device != PCI_ANY_ID, id->device);
396         ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor);
397         ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice);
398 
399         baseclass = (id->class) >> 16;
400         baseclass_mask = (id->class_mask) >> 16;
401         subclass = (id->class) >> 8;
402         subclass_mask = (id->class_mask) >> 8;
403         interface = id->class;
404         interface_mask = id->class_mask;
405 
406         if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
407             || (subclass_mask != 0 && subclass_mask != 0xFF)
408             || (interface_mask != 0 && interface_mask != 0xFF)) {
409                 warn("Can't handle masks in %s:%04X\n",
410                      filename, id->class_mask);
411                 return 0;
412         }
413 
414         ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
415         ADD(alias, "sc", subclass_mask == 0xFF, subclass);
416         ADD(alias, "i", interface_mask == 0xFF, interface);
417         add_wildcard(alias);
418         return 1;
419 }
420 ADD_TO_DEVTABLE("pci", struct pci_device_id, do_pci_entry);
421 
422 /* looks like: "ccw:tNmNdtNdmN" */
423 static int do_ccw_entry(const char *filename,
424                         struct ccw_device_id *id, char *alias)
425 {
426         id->match_flags = TO_NATIVE(id->match_flags);
427         id->cu_type = TO_NATIVE(id->cu_type);
428         id->cu_model = TO_NATIVE(id->cu_model);
429         id->dev_type = TO_NATIVE(id->dev_type);
430         id->dev_model = TO_NATIVE(id->dev_model);
431 
432         strcpy(alias, "ccw:");
433         ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
434             id->cu_type);
435         ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
436             id->cu_model);
437         ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
438             id->dev_type);
439         ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
440             id->dev_model);
441         add_wildcard(alias);
442         return 1;
443 }
444 ADD_TO_DEVTABLE("ccw", struct ccw_device_id, do_ccw_entry);
445 
446 /* looks like: "ap:tN" */
447 static int do_ap_entry(const char *filename,
448                        struct ap_device_id *id, char *alias)
449 {
450         sprintf(alias, "ap:t%02X*", id->dev_type);
451         return 1;
452 }
453 ADD_TO_DEVTABLE("ap", struct ap_device_id, do_ap_entry);
454 
455 /* looks like: "css:tN" */
456 static int do_css_entry(const char *filename,
457                         struct css_device_id *id, char *alias)
458 {
459         sprintf(alias, "css:t%01X", id->type);
460         return 1;
461 }
462 ADD_TO_DEVTABLE("css", struct css_device_id, do_css_entry);
463 
464 /* Looks like: "serio:tyNprNidNexN" */
465 static int do_serio_entry(const char *filename,
466                           struct serio_device_id *id, char *alias)
467 {
468         id->type = TO_NATIVE(id->type);
469         id->proto = TO_NATIVE(id->proto);
470         id->id = TO_NATIVE(id->id);
471         id->extra = TO_NATIVE(id->extra);
472 
473         strcpy(alias, "serio:");
474         ADD(alias, "ty", id->type != SERIO_ANY, id->type);
475         ADD(alias, "pr", id->proto != SERIO_ANY, id->proto);
476         ADD(alias, "id", id->id != SERIO_ANY, id->id);
477         ADD(alias, "ex", id->extra != SERIO_ANY, id->extra);
478 
479         add_wildcard(alias);
480         return 1;
481 }
482 ADD_TO_DEVTABLE("serio", struct serio_device_id, do_serio_entry);
483 
484 /* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
485 static int do_acpi_entry(const char *filename,
486                         struct acpi_device_id *id, char *alias)
487 {
488         sprintf(alias, "acpi*:%s:*", id->id);
489         return 1;
490 }
491 ADD_TO_DEVTABLE("acpi", struct acpi_device_id, do_acpi_entry);
492 
493 /* looks like: "pnp:dD" */
494 static void do_pnp_device_entry(void *symval, unsigned long size,
495                                 struct module *mod)
496 {
497         const unsigned long id_size = sizeof(struct pnp_device_id);
498         const unsigned int count = (size / id_size)-1;
499         const struct pnp_device_id *devs = symval;
500         unsigned int i;
501 
502         device_id_check(mod->name, "pnp", size, id_size, symval);
503 
504         for (i = 0; i < count; i++) {
505                 const char *id = (char *)devs[i].id;
506                 char acpi_id[sizeof(devs[0].id)];
507                 int j;
508 
509                 buf_printf(&mod->dev_table_buf,
510                            "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
511 
512                 /* fix broken pnp bus lowercasing */
513                 for (j = 0; j < sizeof(acpi_id); j++)
514                         acpi_id[j] = toupper(id[j]);
515                 buf_printf(&mod->dev_table_buf,
516                            "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
517         }
518 }
519 
520 /* looks like: "pnp:dD" for every device of the card */
521 static void do_pnp_card_entries(void *symval, unsigned long size,
522                                 struct module *mod)
523 {
524         const unsigned long id_size = sizeof(struct pnp_card_device_id);
525         const unsigned int count = (size / id_size)-1;
526         const struct pnp_card_device_id *cards = symval;
527         unsigned int i;
528 
529         device_id_check(mod->name, "pnp", size, id_size, symval);
530 
531         for (i = 0; i < count; i++) {
532                 unsigned int j;
533                 const struct pnp_card_device_id *card = &cards[i];
534 
535                 for (j = 0; j < PNP_MAX_DEVICES; j++) {
536                         const char *id = (char *)card->devs[j].id;
537                         int i2, j2;
538                         int dup = 0;
539 
540                         if (!id[0])
541                                 break;
542 
543                         /* find duplicate, already added value */
544                         for (i2 = 0; i2 < i && !dup; i2++) {
545                                 const struct pnp_card_device_id *card2 = &cards[i2];
546 
547                                 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
548                                         const char *id2 = (char *)card2->devs[j2].id;
549 
550                                         if (!id2[0])
551                                                 break;
552 
553                                         if (!strcmp(id, id2)) {
554                                                 dup = 1;
555                                                 break;
556                                         }
557                                 }
558                         }
559 
560                         /* add an individual alias for every device entry */
561                         if (!dup) {
562                                 char acpi_id[sizeof(card->devs[0].id)];
563                                 int k;
564 
565                                 buf_printf(&mod->dev_table_buf,
566                                            "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
567 
568                                 /* fix broken pnp bus lowercasing */
569                                 for (k = 0; k < sizeof(acpi_id); k++)
570                                         acpi_id[k] = toupper(id[k]);
571                                 buf_printf(&mod->dev_table_buf,
572                                            "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
573                         }
574                 }
575         }
576 }
577 
578 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
579 static int do_pcmcia_entry(const char *filename,
580                            struct pcmcia_device_id *id, char *alias)
581 {
582         unsigned int i;
583 
584         id->match_flags = TO_NATIVE(id->match_flags);
585         id->manf_id = TO_NATIVE(id->manf_id);
586         id->card_id = TO_NATIVE(id->card_id);
587         id->func_id = TO_NATIVE(id->func_id);
588         id->function = TO_NATIVE(id->function);
589         id->device_no = TO_NATIVE(id->device_no);
590 
591         for (i=0; i<4; i++) {
592                 id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]);
593        }
594 
595        strcpy(alias, "pcmcia:");
596        ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
597            id->manf_id);
598        ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
599            id->card_id);
600        ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
601            id->func_id);
602        ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
603            id->function);
604        ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
605            id->device_no);
606        ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]);
607        ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]);
608        ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]);
609        ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]);
610 
611         add_wildcard(alias);
612        return 1;
613 }
614 ADD_TO_DEVTABLE("pcmcia", struct pcmcia_device_id, do_pcmcia_entry);
615 
616 static int do_of_entry (const char *filename, struct of_device_id *of, char *alias)
617 {
618     int len;
619     char *tmp;
620     len = sprintf (alias, "of:N%sT%s",
621                     of->name[0] ? of->name : "*",
622                     of->type[0] ? of->type : "*");
623 
624     if (of->compatible[0])
625         sprintf (&alias[len], "%sC%s",
626                      of->type[0] ? "*" : "",
627                      of->compatible);
628 
629     /* Replace all whitespace with underscores */
630     for (tmp = alias; tmp && *tmp; tmp++)
631         if (isspace (*tmp))
632             *tmp = '_';
633 
634     add_wildcard(alias);
635     return 1;
636 }
637 ADD_TO_DEVTABLE("of", struct of_device_id, do_of_entry);
638 
639 static int do_vio_entry(const char *filename, struct vio_device_id *vio,
640                 char *alias)
641 {
642         char *tmp;
643 
644         sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*",
645                         vio->compat[0] ? vio->compat : "*");
646 
647         /* Replace all whitespace with underscores */
648         for (tmp = alias; tmp && *tmp; tmp++)
649                 if (isspace (*tmp))
650                         *tmp = '_';
651 
652         add_wildcard(alias);
653         return 1;
654 }
655 ADD_TO_DEVTABLE("vio", struct vio_device_id, do_vio_entry);
656 
657 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
658 
659 static void do_input(char *alias,
660                      kernel_ulong_t *arr, unsigned int min, unsigned int max)
661 {
662         unsigned int i;
663 
664         for (i = min; i < max; i++)
665                 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
666                         sprintf(alias + strlen(alias), "%X,*", i);
667 }
668 
669 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
670 static int do_input_entry(const char *filename, struct input_device_id *id,
671                           char *alias)
672 {
673         sprintf(alias, "input:");
674 
675         ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype);
676         ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor);
677         ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product);
678         ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version);
679 
680         sprintf(alias + strlen(alias), "-e*");
681         if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT)
682                 do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX);
683         sprintf(alias + strlen(alias), "k*");
684         if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
685                 do_input(alias, id->keybit,
686                          INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
687                          INPUT_DEVICE_ID_KEY_MAX);
688         sprintf(alias + strlen(alias), "r*");
689         if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT)
690                 do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX);
691         sprintf(alias + strlen(alias), "a*");
692         if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
693                 do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
694         sprintf(alias + strlen(alias), "m*");
695         if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT)
696                 do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
697         sprintf(alias + strlen(alias), "l*");
698         if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
699                 do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
700         sprintf(alias + strlen(alias), "s*");
701         if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
702                 do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
703         sprintf(alias + strlen(alias), "f*");
704         if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT)
705                 do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
706         sprintf(alias + strlen(alias), "w*");
707         if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT)
708                 do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX);
709         return 1;
710 }
711 ADD_TO_DEVTABLE("input", struct input_device_id, do_input_entry);
712 
713 static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa,
714                 char *alias)
715 {
716         if (eisa->sig[0])
717                 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig);
718         else
719                 strcat(alias, "*");
720         return 1;
721 }
722 ADD_TO_DEVTABLE("eisa", struct eisa_device_id, do_eisa_entry);
723 
724 /* Looks like: parisc:tNhvNrevNsvN */
725 static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
726                 char *alias)
727 {
728         id->hw_type = TO_NATIVE(id->hw_type);
729         id->hversion = TO_NATIVE(id->hversion);
730         id->hversion_rev = TO_NATIVE(id->hversion_rev);
731         id->sversion = TO_NATIVE(id->sversion);
732 
733         strcpy(alias, "parisc:");
734         ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type);
735         ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion);
736         ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev);
737         ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion);
738 
739         add_wildcard(alias);
740         return 1;
741 }
742 ADD_TO_DEVTABLE("parisc", struct parisc_device_id, do_parisc_entry);
743 
744 /* Looks like: sdio:cNvNdN. */
745 static int do_sdio_entry(const char *filename,
746                         struct sdio_device_id *id, char *alias)
747 {
748         id->class = TO_NATIVE(id->class);
749         id->vendor = TO_NATIVE(id->vendor);
750         id->device = TO_NATIVE(id->device);
751 
752         strcpy(alias, "sdio:");
753         ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class);
754         ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor);
755         ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device);
756         add_wildcard(alias);
757         return 1;
758 }
759 ADD_TO_DEVTABLE("sdio", struct sdio_device_id, do_sdio_entry);
760 
761 /* Looks like: ssb:vNidNrevN. */
762 static int do_ssb_entry(const char *filename,
763                         struct ssb_device_id *id, char *alias)
764 {
765         id->vendor = TO_NATIVE(id->vendor);
766         id->coreid = TO_NATIVE(id->coreid);
767         id->revision = TO_NATIVE(id->revision);
768 
769         strcpy(alias, "ssb:");
770         ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor);
771         ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid);
772         ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision);
773         add_wildcard(alias);
774         return 1;
775 }
776 ADD_TO_DEVTABLE("ssb", struct ssb_device_id, do_ssb_entry);
777 
778 /* Looks like: bcma:mNidNrevNclN. */
779 static int do_bcma_entry(const char *filename,
780                          struct bcma_device_id *id, char *alias)
781 {
782         id->manuf = TO_NATIVE(id->manuf);
783         id->id = TO_NATIVE(id->id);
784         id->rev = TO_NATIVE(id->rev);
785         id->class = TO_NATIVE(id->class);
786 
787         strcpy(alias, "bcma:");
788         ADD(alias, "m", id->manuf != BCMA_ANY_MANUF, id->manuf);
789         ADD(alias, "id", id->id != BCMA_ANY_ID, id->id);
790         ADD(alias, "rev", id->rev != BCMA_ANY_REV, id->rev);
791         ADD(alias, "cl", id->class != BCMA_ANY_CLASS, id->class);
792         add_wildcard(alias);
793         return 1;
794 }
795 ADD_TO_DEVTABLE("bcma", struct bcma_device_id, do_bcma_entry);
796 
797 /* Looks like: virtio:dNvN */
798 static int do_virtio_entry(const char *filename, struct virtio_device_id *id,
799                            char *alias)
800 {
801         id->device = TO_NATIVE(id->device);
802         id->vendor = TO_NATIVE(id->vendor);
803 
804         strcpy(alias, "virtio:");
805         ADD(alias, "d", id->device != VIRTIO_DEV_ANY_ID, id->device);
806         ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor);
807 
808         add_wildcard(alias);
809         return 1;
810 }
811 ADD_TO_DEVTABLE("virtio", struct virtio_device_id, do_virtio_entry);
812 
813 /*
814  * Looks like: vmbus:guid
815  * Each byte of the guid will be represented by two hex characters
816  * in the name.
817  */
818 
819 static int do_vmbus_entry(const char *filename, struct hv_vmbus_device_id *id,
820                           char *alias)
821 {
822         int i;
823         char guid_name[((sizeof(id->guid) + 1)) * 2];
824 
825         for (i = 0; i < (sizeof(id->guid) * 2); i += 2)
826                 sprintf(&guid_name[i], "%02x", id->guid[i/2]);
827 
828         strcpy(alias, "vmbus:");
829         strcat(alias, guid_name);
830 
831         return 1;
832 }
833 ADD_TO_DEVTABLE("vmbus", struct hv_vmbus_device_id, do_vmbus_entry);
834 
835 /* Looks like: i2c:S */
836 static int do_i2c_entry(const char *filename, struct i2c_device_id *id,
837                         char *alias)
838 {
839         sprintf(alias, I2C_MODULE_PREFIX "%s", id->name);
840 
841         return 1;
842 }
843 ADD_TO_DEVTABLE("i2c", struct i2c_device_id, do_i2c_entry);
844 
845 /* Looks like: spi:S */
846 static int do_spi_entry(const char *filename, struct spi_device_id *id,
847                         char *alias)
848 {
849         sprintf(alias, SPI_MODULE_PREFIX "%s", id->name);
850 
851         return 1;
852 }
853 ADD_TO_DEVTABLE("spi", struct spi_device_id, do_spi_entry);
854 
855 static const struct dmifield {
856         const char *prefix;
857         int field;
858 } dmi_fields[] = {
859         { "bvn", DMI_BIOS_VENDOR },
860         { "bvr", DMI_BIOS_VERSION },
861         { "bd",  DMI_BIOS_DATE },
862         { "svn", DMI_SYS_VENDOR },
863         { "pn",  DMI_PRODUCT_NAME },
864         { "pvr", DMI_PRODUCT_VERSION },
865         { "rvn", DMI_BOARD_VENDOR },
866         { "rn",  DMI_BOARD_NAME },
867         { "rvr", DMI_BOARD_VERSION },
868         { "cvn", DMI_CHASSIS_VENDOR },
869         { "ct",  DMI_CHASSIS_TYPE },
870         { "cvr", DMI_CHASSIS_VERSION },
871         { NULL,  DMI_NONE }
872 };
873 
874 static void dmi_ascii_filter(char *d, const char *s)
875 {
876         /* Filter out characters we don't want to see in the modalias string */
877         for (; *s; s++)
878                 if (*s > ' ' && *s < 127 && *s != ':')
879                         *(d++) = *s;
880 
881         *d = 0;
882 }
883 
884 
885 static int do_dmi_entry(const char *filename, struct dmi_system_id *id,
886                         char *alias)
887 {
888         int i, j;
889 
890         sprintf(alias, "dmi*");
891 
892         for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
893                 for (j = 0; j < 4; j++) {
894                         if (id->matches[j].slot &&
895                             id->matches[j].slot == dmi_fields[i].field) {
896                                 sprintf(alias + strlen(alias), ":%s*",
897                                         dmi_fields[i].prefix);
898                                 dmi_ascii_filter(alias + strlen(alias),
899                                                  id->matches[j].substr);
900                                 strcat(alias, "*");
901                         }
902                 }
903         }
904 
905         strcat(alias, ":");
906         return 1;
907 }
908 ADD_TO_DEVTABLE("dmi", struct dmi_system_id, do_dmi_entry);
909 
910 static int do_platform_entry(const char *filename,
911                              struct platform_device_id *id, char *alias)
912 {
913         sprintf(alias, PLATFORM_MODULE_PREFIX "%s", id->name);
914         return 1;
915 }
916 ADD_TO_DEVTABLE("platform", struct platform_device_id, do_platform_entry);
917 
918 static int do_mdio_entry(const char *filename,
919                          struct mdio_device_id *id, char *alias)
920 {
921         int i;
922 
923         alias += sprintf(alias, MDIO_MODULE_PREFIX);
924 
925         for (i = 0; i < 32; i++) {
926                 if (!((id->phy_id_mask >> (31-i)) & 1))
927                         *(alias++) = '?';
928                 else if ((id->phy_id >> (31-i)) & 1)
929                         *(alias++) = '1';
930                 else
931                         *(alias++) = '';
932         }
933 
934         /* Terminate the string */
935         *alias = 0;
936 
937         return 1;
938 }
939 ADD_TO_DEVTABLE("mdio", struct mdio_device_id, do_mdio_entry);
940 
941 /* Looks like: zorro:iN. */
942 static int do_zorro_entry(const char *filename, struct zorro_device_id *id,
943                           char *alias)
944 {
945         id->id = TO_NATIVE(id->id);
946         strcpy(alias, "zorro:");
947         ADD(alias, "i", id->id != ZORRO_WILDCARD, id->id);
948         return 1;
949 }
950 ADD_TO_DEVTABLE("zorro", struct zorro_device_id, do_zorro_entry);
951 
952 /* looks like: "pnp:dD" */
953 static int do_isapnp_entry(const char *filename,
954                            struct isapnp_device_id *id, char *alias)
955 {
956         sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
957                 'A' + ((id->vendor >> 2) & 0x3f) - 1,
958                 'A' + (((id->vendor & 3) << 3) | ((id->vendor >> 13) & 7)) - 1,
959                 'A' + ((id->vendor >> 8) & 0x1f) - 1,
960                 (id->function >> 4) & 0x0f, id->function & 0x0f,
961                 (id->function >> 12) & 0x0f, (id->function >> 8) & 0x0f);
962         return 1;
963 }
964 ADD_TO_DEVTABLE("isapnp", struct isapnp_device_id, do_isapnp_entry);
965 
966 /*
967  * Append a match expression for a single masked hex digit.
968  * outp points to a pointer to the character at which to append.
969  *      *outp is updated on return to point just after the appended text,
970  *      to facilitate further appending.
971  */
972 static void append_nibble_mask(char **outp,
973                                unsigned int nibble, unsigned int mask)
974 {
975         char *p = *outp;
976         unsigned int i;
977 
978         switch (mask) {
979         case 0:
980                 *p++ = '?';
981                 break;
982 
983         case 0xf:
984                 p += sprintf(p, "%X",  nibble);
985                 break;
986 
987         default:
988                 /*
989                  * Dumbly emit a match pattern for all possible matching
990                  * digits.  This could be improved in some cases using ranges,
991                  * but it has the advantage of being trivially correct, and is
992                  * often optimal.
993                  */
994                 *p++ = '[';
995                 for (i = 0; i < 0x10; i++)
996                         if ((i & mask) == nibble)
997                                 p += sprintf(p, "%X", i);
998                 *p++ = ']';
999         }
1000 
1001         /* Ensure that the string remains NUL-terminated: */
1002         *p = '\0';
1003 
1004         /* Advance the caller's end-of-string pointer: */
1005         *outp = p;
1006 }
1007 
1008 /*
1009  * looks like: "amba:dN"
1010  *
1011  * N is exactly 8 digits, where each is an upper-case hex digit, or
1012  *      a ? or [] pattern matching exactly one digit.
1013  */
1014 static int do_amba_entry(const char *filename,
1015                          struct amba_id *id, char *alias)
1016 {
1017         unsigned int digit;
1018         char *p = alias;
1019 
1020         if ((id->id & id->mask) != id->id)
1021                 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1022                       "id=0x%08X, mask=0x%08X.  Please fix this driver.\n",
1023                       filename, id->id, id->mask);
1024 
1025         p += sprintf(alias, "amba:d");
1026         for (digit = 0; digit < 8; digit++)
1027                 append_nibble_mask(&p,
1028                                    (id->id >> (4 * (7 - digit))) & 0xf,
1029                                    (id->mask >> (4 * (7 - digit))) & 0xf);
1030 
1031         return 1;
1032 }
1033 ADD_TO_DEVTABLE("amba", struct amba_id, do_amba_entry);
1034 
1035 /* LOOKS like x86cpu:vendor:VVVV:family:FFFF:model:MMMM:feature:*,FEAT,*
1036  * All fields are numbers. It would be nicer to use strings for vendor
1037  * and feature, but getting those out of the build system here is too
1038  * complicated.
1039  */
1040 
1041 static int do_x86cpu_entry(const char *filename, struct x86_cpu_id *id,
1042                            char *alias)
1043 {
1044         id->feature = TO_NATIVE(id->feature);
1045         id->family = TO_NATIVE(id->family);
1046         id->model = TO_NATIVE(id->model);
1047         id->vendor = TO_NATIVE(id->vendor);
1048 
1049         strcpy(alias, "x86cpu:");
1050         ADD(alias, "vendor:",  id->vendor != X86_VENDOR_ANY, id->vendor);
1051         ADD(alias, ":family:", id->family != X86_FAMILY_ANY, id->family);
1052         ADD(alias, ":model:",  id->model  != X86_MODEL_ANY,  id->model);
1053         strcat(alias, ":feature:*");
1054         if (id->feature != X86_FEATURE_ANY)
1055                 sprintf(alias + strlen(alias), "%04X*", id->feature);
1056         return 1;
1057 }
1058 ADD_TO_DEVTABLE("x86cpu", struct x86_cpu_id, do_x86cpu_entry);
1059 
1060 /* Does namelen bytes of name exactly match the symbol? */
1061 static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1062 {
1063         if (namelen != strlen(symbol))
1064                 return false;
1065 
1066         return memcmp(name, symbol, namelen) == 0;
1067 }
1068 
1069 static void do_table(void *symval, unsigned long size,
1070                      unsigned long id_size,
1071                      const char *device_id,
1072                      void *function,
1073                      struct module *mod)
1074 {
1075         unsigned int i;
1076         char alias[500];
1077         int (*do_entry)(const char *, void *entry, char *alias) = function;
1078 
1079         device_id_check(mod->name, device_id, size, id_size, symval);
1080         /* Leave last one: it's the terminator. */
1081         size -= id_size;
1082 
1083         for (i = 0; i < size; i += id_size) {
1084                 if (do_entry(mod->name, symval+i, alias)) {
1085                         buf_printf(&mod->dev_table_buf,
1086                                    "MODULE_ALIAS(\"%s\");\n", alias);
1087                 }
1088         }
1089 }
1090 
1091 /* Create MODULE_ALIAS() statements.
1092  * At this time, we cannot write the actual output C source yet,
1093  * so we write into the mod->dev_table_buf buffer. */
1094 void handle_moddevtable(struct module *mod, struct elf_info *info,
1095                         Elf_Sym *sym, const char *symname)
1096 {
1097         void *symval;
1098         char *zeros = NULL;
1099         const char *name;
1100         unsigned int namelen;
1101 
1102         /* We're looking for a section relative symbol */
1103         if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1104                 return;
1105 
1106         /* We're looking for an object */
1107         if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1108                 return;
1109 
1110         /* All our symbols are of form <prefix>__mod_XXX_device_table. */
1111         name = strstr(symname, "__mod_");
1112         if (!name)
1113                 return;
1114         name += strlen("__mod_");
1115         namelen = strlen(name);
1116         if (namelen < strlen("_device_table"))
1117                 return;
1118         if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1119                 return;
1120         namelen -= strlen("_device_table");
1121 
1122         /* Handle all-NULL symbols allocated into .bss */
1123         if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1124                 zeros = calloc(1, sym->st_size);
1125                 symval = zeros;
1126         } else {
1127                 symval = (void *)info->hdr
1128                         + info->sechdrs[get_secindex(info, sym)].sh_offset
1129                         + sym->st_value;
1130         }
1131 
1132         /* First handle the "special" cases */
1133         if (sym_is(name, namelen, "usb"))
1134                 do_usb_table(symval, sym->st_size, mod);
1135         else if (sym_is(name, namelen, "pnp"))
1136                 do_pnp_device_entry(symval, sym->st_size, mod);
1137         else if (sym_is(name, namelen, "pnp_card"))
1138                 do_pnp_card_entries(symval, sym->st_size, mod);
1139         else {
1140                 struct devtable **p;
1141                 INIT_SECTION(__devtable);
1142 
1143                 for (p = __start___devtable; p < __stop___devtable; p++) {
1144                         if (sym_is(name, namelen, (*p)->device_id)) {
1145                                 do_table(symval, sym->st_size, (*p)->id_size,
1146                                          (*p)->device_id, (*p)->function, mod);
1147                                 break;
1148                         }
1149                 }
1150         }
1151         free(zeros);
1152 }
1153 
1154 /* Now add out buffered information to the generated C source */
1155 void add_moddevtable(struct buffer *buf, struct module *mod)
1156 {
1157         buf_printf(buf, "\n");
1158         buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1159         free(mod->dev_table_buf.p);
1160 }
1161 

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