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

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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:vNpNdNdcNdscNdpNicNiscNipNinN" */
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         ADD(alias, "in",
214             id->match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
215             id->bInterfaceNumber);
216 
217         add_wildcard(alias);
218         buf_printf(&mod->dev_table_buf,
219                    "MODULE_ALIAS(\"%s\");\n", alias);
220 }
221 
222 /* Handles increment/decrement of BCD formatted integers */
223 /* Returns the previous value, so it works like i++ or i-- */
224 static unsigned int incbcd(unsigned int *bcd,
225                            int inc,
226                            unsigned char max,
227                            size_t chars)
228 {
229         unsigned int init = *bcd, i, j;
230         unsigned long long c, dec = 0;
231 
232         /* If bcd is not in BCD format, just increment */
233         if (max > 0x9) {
234                 *bcd += inc;
235                 return init;
236         }
237 
238         /* Convert BCD to Decimal */
239         for (i=0 ; i < chars ; i++) {
240                 c = (*bcd >> (i << 2)) & 0xf;
241                 c = c > 9 ? 9 : c; /* force to bcd just in case */
242                 for (j=0 ; j < i ; j++)
243                         c = c * 10;
244                 dec += c;
245         }
246 
247         /* Do our increment/decrement */
248         dec += inc;
249         *bcd  = 0;
250 
251         /* Convert back to BCD */
252         for (i=0 ; i < chars ; i++) {
253                 for (c=1,j=0 ; j < i ; j++)
254                         c = c * 10;
255                 c = (dec / c) % 10;
256                 *bcd += c << (i << 2);
257         }
258         return init;
259 }
260 
261 static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod)
262 {
263         unsigned int devlo, devhi;
264         unsigned char chi, clo, max;
265         int ndigits;
266 
267         id->match_flags = TO_NATIVE(id->match_flags);
268         id->idVendor = TO_NATIVE(id->idVendor);
269         id->idProduct = TO_NATIVE(id->idProduct);
270 
271         devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
272                 TO_NATIVE(id->bcdDevice_lo) : 0x0U;
273         devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
274                 TO_NATIVE(id->bcdDevice_hi) : ~0x0U;
275 
276         /* Figure out if this entry is in bcd or hex format */
277         max = 0x9; /* Default to decimal format */
278         for (ndigits = 0 ; ndigits < sizeof(id->bcdDevice_lo) * 2 ; ndigits++) {
279                 clo = (devlo >> (ndigits << 2)) & 0xf;
280                 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
281                 if (clo > max || chi > max) {
282                         max = 0xf;
283                         break;
284                 }
285         }
286 
287         /*
288          * Some modules (visor) have empty slots as placeholder for
289          * run-time specification that results in catch-all alias
290          */
291         if (!(id->idVendor | id->idProduct | id->bDeviceClass | id->bInterfaceClass))
292                 return;
293 
294         /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
295         for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
296                 clo = devlo & 0xf;
297                 chi = devhi & 0xf;
298                 if (chi > max)  /* If we are in bcd mode, truncate if necessary */
299                         chi = max;
300                 devlo >>= 4;
301                 devhi >>= 4;
302 
303                 if (devlo == devhi || !ndigits) {
304                         do_usb_entry(id, devlo, ndigits, clo, chi, max, mod);
305                         break;
306                 }
307 
308                 if (clo > 0x0)
309                         do_usb_entry(id,
310                                      incbcd(&devlo, 1, max,
311                                             sizeof(id->bcdDevice_lo) * 2),
312                                      ndigits, clo, max, max, mod);
313 
314                 if (chi < max)
315                         do_usb_entry(id,
316                                      incbcd(&devhi, -1, max,
317                                             sizeof(id->bcdDevice_lo) * 2),
318                                      ndigits, 0x0, chi, max, mod);
319         }
320 }
321 
322 static void do_usb_table(void *symval, unsigned long size,
323                          struct module *mod)
324 {
325         unsigned int i;
326         const unsigned long id_size = sizeof(struct usb_device_id);
327 
328         device_id_check(mod->name, "usb", size, id_size, symval);
329 
330         /* Leave last one: it's the terminator. */
331         size -= id_size;
332 
333         for (i = 0; i < size; i += id_size)
334                 do_usb_entry_multi(symval + i, mod);
335 }
336 
337 /* Looks like: hid:bNvNpN */
338 static int do_hid_entry(const char *filename,
339                              struct hid_device_id *id, char *alias)
340 {
341         id->bus = TO_NATIVE(id->bus);
342         id->group = TO_NATIVE(id->group);
343         id->vendor = TO_NATIVE(id->vendor);
344         id->product = TO_NATIVE(id->product);
345 
346         sprintf(alias, "hid:");
347         ADD(alias, "b", id->bus != HID_BUS_ANY, id->bus);
348         ADD(alias, "g", id->group != HID_GROUP_ANY, id->group);
349         ADD(alias, "v", id->vendor != HID_ANY_ID, id->vendor);
350         ADD(alias, "p", id->product != HID_ANY_ID, id->product);
351 
352         return 1;
353 }
354 ADD_TO_DEVTABLE("hid", struct hid_device_id, do_hid_entry);
355 
356 /* Looks like: ieee1394:venNmoNspNverN */
357 static int do_ieee1394_entry(const char *filename,
358                              struct ieee1394_device_id *id, char *alias)
359 {
360         id->match_flags = TO_NATIVE(id->match_flags);
361         id->vendor_id = TO_NATIVE(id->vendor_id);
362         id->model_id = TO_NATIVE(id->model_id);
363         id->specifier_id = TO_NATIVE(id->specifier_id);
364         id->version = TO_NATIVE(id->version);
365 
366         strcpy(alias, "ieee1394:");
367         ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID,
368             id->vendor_id);
369         ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID,
370             id->model_id);
371         ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID,
372             id->specifier_id);
373         ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION,
374             id->version);
375 
376         add_wildcard(alias);
377         return 1;
378 }
379 ADD_TO_DEVTABLE("ieee1394", struct ieee1394_device_id, do_ieee1394_entry);
380 
381 /* Looks like: pci:vNdNsvNsdNbcNscNiN. */
382 static int do_pci_entry(const char *filename,
383                         struct pci_device_id *id, char *alias)
384 {
385         /* Class field can be divided into these three. */
386         unsigned char baseclass, subclass, interface,
387                 baseclass_mask, subclass_mask, interface_mask;
388 
389         id->vendor = TO_NATIVE(id->vendor);
390         id->device = TO_NATIVE(id->device);
391         id->subvendor = TO_NATIVE(id->subvendor);
392         id->subdevice = TO_NATIVE(id->subdevice);
393         id->class = TO_NATIVE(id->class);
394         id->class_mask = TO_NATIVE(id->class_mask);
395 
396         strcpy(alias, "pci:");
397         ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor);
398         ADD(alias, "d", id->device != PCI_ANY_ID, id->device);
399         ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor);
400         ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice);
401 
402         baseclass = (id->class) >> 16;
403         baseclass_mask = (id->class_mask) >> 16;
404         subclass = (id->class) >> 8;
405         subclass_mask = (id->class_mask) >> 8;
406         interface = id->class;
407         interface_mask = id->class_mask;
408 
409         if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
410             || (subclass_mask != 0 && subclass_mask != 0xFF)
411             || (interface_mask != 0 && interface_mask != 0xFF)) {
412                 warn("Can't handle masks in %s:%04X\n",
413                      filename, id->class_mask);
414                 return 0;
415         }
416 
417         ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
418         ADD(alias, "sc", subclass_mask == 0xFF, subclass);
419         ADD(alias, "i", interface_mask == 0xFF, interface);
420         add_wildcard(alias);
421         return 1;
422 }
423 ADD_TO_DEVTABLE("pci", struct pci_device_id, do_pci_entry);
424 
425 /* looks like: "ccw:tNmNdtNdmN" */
426 static int do_ccw_entry(const char *filename,
427                         struct ccw_device_id *id, char *alias)
428 {
429         id->match_flags = TO_NATIVE(id->match_flags);
430         id->cu_type = TO_NATIVE(id->cu_type);
431         id->cu_model = TO_NATIVE(id->cu_model);
432         id->dev_type = TO_NATIVE(id->dev_type);
433         id->dev_model = TO_NATIVE(id->dev_model);
434 
435         strcpy(alias, "ccw:");
436         ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
437             id->cu_type);
438         ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
439             id->cu_model);
440         ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
441             id->dev_type);
442         ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
443             id->dev_model);
444         add_wildcard(alias);
445         return 1;
446 }
447 ADD_TO_DEVTABLE("ccw", struct ccw_device_id, do_ccw_entry);
448 
449 /* looks like: "ap:tN" */
450 static int do_ap_entry(const char *filename,
451                        struct ap_device_id *id, char *alias)
452 {
453         sprintf(alias, "ap:t%02X*", id->dev_type);
454         return 1;
455 }
456 ADD_TO_DEVTABLE("ap", struct ap_device_id, do_ap_entry);
457 
458 /* looks like: "css:tN" */
459 static int do_css_entry(const char *filename,
460                         struct css_device_id *id, char *alias)
461 {
462         sprintf(alias, "css:t%01X", id->type);
463         return 1;
464 }
465 ADD_TO_DEVTABLE("css", struct css_device_id, do_css_entry);
466 
467 /* Looks like: "serio:tyNprNidNexN" */
468 static int do_serio_entry(const char *filename,
469                           struct serio_device_id *id, char *alias)
470 {
471         id->type = TO_NATIVE(id->type);
472         id->proto = TO_NATIVE(id->proto);
473         id->id = TO_NATIVE(id->id);
474         id->extra = TO_NATIVE(id->extra);
475 
476         strcpy(alias, "serio:");
477         ADD(alias, "ty", id->type != SERIO_ANY, id->type);
478         ADD(alias, "pr", id->proto != SERIO_ANY, id->proto);
479         ADD(alias, "id", id->id != SERIO_ANY, id->id);
480         ADD(alias, "ex", id->extra != SERIO_ANY, id->extra);
481 
482         add_wildcard(alias);
483         return 1;
484 }
485 ADD_TO_DEVTABLE("serio", struct serio_device_id, do_serio_entry);
486 
487 /* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
488 static int do_acpi_entry(const char *filename,
489                         struct acpi_device_id *id, char *alias)
490 {
491         sprintf(alias, "acpi*:%s:*", id->id);
492         return 1;
493 }
494 ADD_TO_DEVTABLE("acpi", struct acpi_device_id, do_acpi_entry);
495 
496 /* looks like: "pnp:dD" */
497 static void do_pnp_device_entry(void *symval, unsigned long size,
498                                 struct module *mod)
499 {
500         const unsigned long id_size = sizeof(struct pnp_device_id);
501         const unsigned int count = (size / id_size)-1;
502         const struct pnp_device_id *devs = symval;
503         unsigned int i;
504 
505         device_id_check(mod->name, "pnp", size, id_size, symval);
506 
507         for (i = 0; i < count; i++) {
508                 const char *id = (char *)devs[i].id;
509                 char acpi_id[sizeof(devs[0].id)];
510                 int j;
511 
512                 buf_printf(&mod->dev_table_buf,
513                            "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
514 
515                 /* fix broken pnp bus lowercasing */
516                 for (j = 0; j < sizeof(acpi_id); j++)
517                         acpi_id[j] = toupper(id[j]);
518                 buf_printf(&mod->dev_table_buf,
519                            "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
520         }
521 }
522 
523 /* looks like: "pnp:dD" for every device of the card */
524 static void do_pnp_card_entries(void *symval, unsigned long size,
525                                 struct module *mod)
526 {
527         const unsigned long id_size = sizeof(struct pnp_card_device_id);
528         const unsigned int count = (size / id_size)-1;
529         const struct pnp_card_device_id *cards = symval;
530         unsigned int i;
531 
532         device_id_check(mod->name, "pnp", size, id_size, symval);
533 
534         for (i = 0; i < count; i++) {
535                 unsigned int j;
536                 const struct pnp_card_device_id *card = &cards[i];
537 
538                 for (j = 0; j < PNP_MAX_DEVICES; j++) {
539                         const char *id = (char *)card->devs[j].id;
540                         int i2, j2;
541                         int dup = 0;
542 
543                         if (!id[0])
544                                 break;
545 
546                         /* find duplicate, already added value */
547                         for (i2 = 0; i2 < i && !dup; i2++) {
548                                 const struct pnp_card_device_id *card2 = &cards[i2];
549 
550                                 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
551                                         const char *id2 = (char *)card2->devs[j2].id;
552 
553                                         if (!id2[0])
554                                                 break;
555 
556                                         if (!strcmp(id, id2)) {
557                                                 dup = 1;
558                                                 break;
559                                         }
560                                 }
561                         }
562 
563                         /* add an individual alias for every device entry */
564                         if (!dup) {
565                                 char acpi_id[sizeof(card->devs[0].id)];
566                                 int k;
567 
568                                 buf_printf(&mod->dev_table_buf,
569                                            "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
570 
571                                 /* fix broken pnp bus lowercasing */
572                                 for (k = 0; k < sizeof(acpi_id); k++)
573                                         acpi_id[k] = toupper(id[k]);
574                                 buf_printf(&mod->dev_table_buf,
575                                            "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
576                         }
577                 }
578         }
579 }
580 
581 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
582 static int do_pcmcia_entry(const char *filename,
583                            struct pcmcia_device_id *id, char *alias)
584 {
585         unsigned int i;
586 
587         id->match_flags = TO_NATIVE(id->match_flags);
588         id->manf_id = TO_NATIVE(id->manf_id);
589         id->card_id = TO_NATIVE(id->card_id);
590         id->func_id = TO_NATIVE(id->func_id);
591         id->function = TO_NATIVE(id->function);
592         id->device_no = TO_NATIVE(id->device_no);
593 
594         for (i=0; i<4; i++) {
595                 id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]);
596        }
597 
598        strcpy(alias, "pcmcia:");
599        ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
600            id->manf_id);
601        ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
602            id->card_id);
603        ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
604            id->func_id);
605        ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
606            id->function);
607        ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
608            id->device_no);
609        ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]);
610        ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]);
611        ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]);
612        ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]);
613 
614         add_wildcard(alias);
615        return 1;
616 }
617 ADD_TO_DEVTABLE("pcmcia", struct pcmcia_device_id, do_pcmcia_entry);
618 
619 static int do_of_entry (const char *filename, struct of_device_id *of, char *alias)
620 {
621     int len;
622     char *tmp;
623     len = sprintf (alias, "of:N%sT%s",
624                     of->name[0] ? of->name : "*",
625                     of->type[0] ? of->type : "*");
626 
627     if (of->compatible[0])
628         sprintf (&alias[len], "%sC%s",
629                      of->type[0] ? "*" : "",
630                      of->compatible);
631 
632     /* Replace all whitespace with underscores */
633     for (tmp = alias; tmp && *tmp; tmp++)
634         if (isspace (*tmp))
635             *tmp = '_';
636 
637     add_wildcard(alias);
638     return 1;
639 }
640 ADD_TO_DEVTABLE("of", struct of_device_id, do_of_entry);
641 
642 static int do_vio_entry(const char *filename, struct vio_device_id *vio,
643                 char *alias)
644 {
645         char *tmp;
646 
647         sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*",
648                         vio->compat[0] ? vio->compat : "*");
649 
650         /* Replace all whitespace with underscores */
651         for (tmp = alias; tmp && *tmp; tmp++)
652                 if (isspace (*tmp))
653                         *tmp = '_';
654 
655         add_wildcard(alias);
656         return 1;
657 }
658 ADD_TO_DEVTABLE("vio", struct vio_device_id, do_vio_entry);
659 
660 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
661 
662 static void do_input(char *alias,
663                      kernel_ulong_t *arr, unsigned int min, unsigned int max)
664 {
665         unsigned int i;
666 
667         for (i = min; i < max; i++)
668                 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
669                         sprintf(alias + strlen(alias), "%X,*", i);
670 }
671 
672 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
673 static int do_input_entry(const char *filename, struct input_device_id *id,
674                           char *alias)
675 {
676         sprintf(alias, "input:");
677 
678         ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype);
679         ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor);
680         ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product);
681         ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version);
682 
683         sprintf(alias + strlen(alias), "-e*");
684         if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT)
685                 do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX);
686         sprintf(alias + strlen(alias), "k*");
687         if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
688                 do_input(alias, id->keybit,
689                          INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
690                          INPUT_DEVICE_ID_KEY_MAX);
691         sprintf(alias + strlen(alias), "r*");
692         if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT)
693                 do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX);
694         sprintf(alias + strlen(alias), "a*");
695         if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
696                 do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
697         sprintf(alias + strlen(alias), "m*");
698         if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT)
699                 do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
700         sprintf(alias + strlen(alias), "l*");
701         if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
702                 do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
703         sprintf(alias + strlen(alias), "s*");
704         if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
705                 do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
706         sprintf(alias + strlen(alias), "f*");
707         if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT)
708                 do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
709         sprintf(alias + strlen(alias), "w*");
710         if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT)
711                 do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX);
712         return 1;
713 }
714 ADD_TO_DEVTABLE("input", struct input_device_id, do_input_entry);
715 
716 static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa,
717                 char *alias)
718 {
719         if (eisa->sig[0])
720                 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig);
721         else
722                 strcat(alias, "*");
723         return 1;
724 }
725 ADD_TO_DEVTABLE("eisa", struct eisa_device_id, do_eisa_entry);
726 
727 /* Looks like: parisc:tNhvNrevNsvN */
728 static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
729                 char *alias)
730 {
731         id->hw_type = TO_NATIVE(id->hw_type);
732         id->hversion = TO_NATIVE(id->hversion);
733         id->hversion_rev = TO_NATIVE(id->hversion_rev);
734         id->sversion = TO_NATIVE(id->sversion);
735 
736         strcpy(alias, "parisc:");
737         ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type);
738         ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion);
739         ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev);
740         ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion);
741 
742         add_wildcard(alias);
743         return 1;
744 }
745 ADD_TO_DEVTABLE("parisc", struct parisc_device_id, do_parisc_entry);
746 
747 /* Looks like: sdio:cNvNdN. */
748 static int do_sdio_entry(const char *filename,
749                         struct sdio_device_id *id, char *alias)
750 {
751         id->class = TO_NATIVE(id->class);
752         id->vendor = TO_NATIVE(id->vendor);
753         id->device = TO_NATIVE(id->device);
754 
755         strcpy(alias, "sdio:");
756         ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class);
757         ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor);
758         ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device);
759         add_wildcard(alias);
760         return 1;
761 }
762 ADD_TO_DEVTABLE("sdio", struct sdio_device_id, do_sdio_entry);
763 
764 /* Looks like: ssb:vNidNrevN. */
765 static int do_ssb_entry(const char *filename,
766                         struct ssb_device_id *id, char *alias)
767 {
768         id->vendor = TO_NATIVE(id->vendor);
769         id->coreid = TO_NATIVE(id->coreid);
770         id->revision = TO_NATIVE(id->revision);
771 
772         strcpy(alias, "ssb:");
773         ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor);
774         ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid);
775         ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision);
776         add_wildcard(alias);
777         return 1;
778 }
779 ADD_TO_DEVTABLE("ssb", struct ssb_device_id, do_ssb_entry);
780 
781 /* Looks like: bcma:mNidNrevNclN. */
782 static int do_bcma_entry(const char *filename,
783                          struct bcma_device_id *id, char *alias)
784 {
785         id->manuf = TO_NATIVE(id->manuf);
786         id->id = TO_NATIVE(id->id);
787         id->rev = TO_NATIVE(id->rev);
788         id->class = TO_NATIVE(id->class);
789 
790         strcpy(alias, "bcma:");
791         ADD(alias, "m", id->manuf != BCMA_ANY_MANUF, id->manuf);
792         ADD(alias, "id", id->id != BCMA_ANY_ID, id->id);
793         ADD(alias, "rev", id->rev != BCMA_ANY_REV, id->rev);
794         ADD(alias, "cl", id->class != BCMA_ANY_CLASS, id->class);
795         add_wildcard(alias);
796         return 1;
797 }
798 ADD_TO_DEVTABLE("bcma", struct bcma_device_id, do_bcma_entry);
799 
800 /* Looks like: virtio:dNvN */
801 static int do_virtio_entry(const char *filename, struct virtio_device_id *id,
802                            char *alias)
803 {
804         id->device = TO_NATIVE(id->device);
805         id->vendor = TO_NATIVE(id->vendor);
806 
807         strcpy(alias, "virtio:");
808         ADD(alias, "d", id->device != VIRTIO_DEV_ANY_ID, id->device);
809         ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor);
810 
811         add_wildcard(alias);
812         return 1;
813 }
814 ADD_TO_DEVTABLE("virtio", struct virtio_device_id, do_virtio_entry);
815 
816 /*
817  * Looks like: vmbus:guid
818  * Each byte of the guid will be represented by two hex characters
819  * in the name.
820  */
821 
822 static int do_vmbus_entry(const char *filename, struct hv_vmbus_device_id *id,
823                           char *alias)
824 {
825         int i;
826         char guid_name[((sizeof(id->guid) + 1)) * 2];
827 
828         for (i = 0; i < (sizeof(id->guid) * 2); i += 2)
829                 sprintf(&guid_name[i], "%02x", id->guid[i/2]);
830 
831         strcpy(alias, "vmbus:");
832         strcat(alias, guid_name);
833 
834         return 1;
835 }
836 ADD_TO_DEVTABLE("vmbus", struct hv_vmbus_device_id, do_vmbus_entry);
837 
838 /* Looks like: i2c:S */
839 static int do_i2c_entry(const char *filename, struct i2c_device_id *id,
840                         char *alias)
841 {
842         sprintf(alias, I2C_MODULE_PREFIX "%s", id->name);
843 
844         return 1;
845 }
846 ADD_TO_DEVTABLE("i2c", struct i2c_device_id, do_i2c_entry);
847 
848 /* Looks like: spi:S */
849 static int do_spi_entry(const char *filename, struct spi_device_id *id,
850                         char *alias)
851 {
852         sprintf(alias, SPI_MODULE_PREFIX "%s", id->name);
853 
854         return 1;
855 }
856 ADD_TO_DEVTABLE("spi", struct spi_device_id, do_spi_entry);
857 
858 static const struct dmifield {
859         const char *prefix;
860         int field;
861 } dmi_fields[] = {
862         { "bvn", DMI_BIOS_VENDOR },
863         { "bvr", DMI_BIOS_VERSION },
864         { "bd",  DMI_BIOS_DATE },
865         { "svn", DMI_SYS_VENDOR },
866         { "pn",  DMI_PRODUCT_NAME },
867         { "pvr", DMI_PRODUCT_VERSION },
868         { "rvn", DMI_BOARD_VENDOR },
869         { "rn",  DMI_BOARD_NAME },
870         { "rvr", DMI_BOARD_VERSION },
871         { "cvn", DMI_CHASSIS_VENDOR },
872         { "ct",  DMI_CHASSIS_TYPE },
873         { "cvr", DMI_CHASSIS_VERSION },
874         { NULL,  DMI_NONE }
875 };
876 
877 static void dmi_ascii_filter(char *d, const char *s)
878 {
879         /* Filter out characters we don't want to see in the modalias string */
880         for (; *s; s++)
881                 if (*s > ' ' && *s < 127 && *s != ':')
882                         *(d++) = *s;
883 
884         *d = 0;
885 }
886 
887 
888 static int do_dmi_entry(const char *filename, struct dmi_system_id *id,
889                         char *alias)
890 {
891         int i, j;
892 
893         sprintf(alias, "dmi*");
894 
895         for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
896                 for (j = 0; j < 4; j++) {
897                         if (id->matches[j].slot &&
898                             id->matches[j].slot == dmi_fields[i].field) {
899                                 sprintf(alias + strlen(alias), ":%s*",
900                                         dmi_fields[i].prefix);
901                                 dmi_ascii_filter(alias + strlen(alias),
902                                                  id->matches[j].substr);
903                                 strcat(alias, "*");
904                         }
905                 }
906         }
907 
908         strcat(alias, ":");
909         return 1;
910 }
911 ADD_TO_DEVTABLE("dmi", struct dmi_system_id, do_dmi_entry);
912 
913 static int do_platform_entry(const char *filename,
914                              struct platform_device_id *id, char *alias)
915 {
916         sprintf(alias, PLATFORM_MODULE_PREFIX "%s", id->name);
917         return 1;
918 }
919 ADD_TO_DEVTABLE("platform", struct platform_device_id, do_platform_entry);
920 
921 static int do_mdio_entry(const char *filename,
922                          struct mdio_device_id *id, char *alias)
923 {
924         int i;
925 
926         alias += sprintf(alias, MDIO_MODULE_PREFIX);
927 
928         for (i = 0; i < 32; i++) {
929                 if (!((id->phy_id_mask >> (31-i)) & 1))
930                         *(alias++) = '?';
931                 else if ((id->phy_id >> (31-i)) & 1)
932                         *(alias++) = '1';
933                 else
934                         *(alias++) = '';
935         }
936 
937         /* Terminate the string */
938         *alias = 0;
939 
940         return 1;
941 }
942 ADD_TO_DEVTABLE("mdio", struct mdio_device_id, do_mdio_entry);
943 
944 /* Looks like: zorro:iN. */
945 static int do_zorro_entry(const char *filename, struct zorro_device_id *id,
946                           char *alias)
947 {
948         id->id = TO_NATIVE(id->id);
949         strcpy(alias, "zorro:");
950         ADD(alias, "i", id->id != ZORRO_WILDCARD, id->id);
951         return 1;
952 }
953 ADD_TO_DEVTABLE("zorro", struct zorro_device_id, do_zorro_entry);
954 
955 /* looks like: "pnp:dD" */
956 static int do_isapnp_entry(const char *filename,
957                            struct isapnp_device_id *id, char *alias)
958 {
959         sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
960                 'A' + ((id->vendor >> 2) & 0x3f) - 1,
961                 'A' + (((id->vendor & 3) << 3) | ((id->vendor >> 13) & 7)) - 1,
962                 'A' + ((id->vendor >> 8) & 0x1f) - 1,
963                 (id->function >> 4) & 0x0f, id->function & 0x0f,
964                 (id->function >> 12) & 0x0f, (id->function >> 8) & 0x0f);
965         return 1;
966 }
967 ADD_TO_DEVTABLE("isapnp", struct isapnp_device_id, do_isapnp_entry);
968 
969 /* Looks like: "ipack:fNvNdN". */
970 static int do_ipack_entry(const char *filename,
971                           struct ipack_device_id *id, char *alias)
972 {
973         id->vendor = TO_NATIVE(id->vendor);
974         id->device = TO_NATIVE(id->device);
975         strcpy(alias, "ipack:");
976         ADD(alias, "f", id->format != IPACK_ANY_FORMAT, id->format);
977         ADD(alias, "v", id->vendor != IPACK_ANY_ID, id->vendor);
978         ADD(alias, "d", id->device != IPACK_ANY_ID, id->device);
979         add_wildcard(alias);
980         return 1;
981 }
982 ADD_TO_DEVTABLE("ipack", struct ipack_device_id, do_ipack_entry);
983 
984 /*
985  * Append a match expression for a single masked hex digit.
986  * outp points to a pointer to the character at which to append.
987  *      *outp is updated on return to point just after the appended text,
988  *      to facilitate further appending.
989  */
990 static void append_nibble_mask(char **outp,
991                                unsigned int nibble, unsigned int mask)
992 {
993         char *p = *outp;
994         unsigned int i;
995 
996         switch (mask) {
997         case 0:
998                 *p++ = '?';
999                 break;
1000 
1001         case 0xf:
1002                 p += sprintf(p, "%X",  nibble);
1003                 break;
1004 
1005         default:
1006                 /*
1007                  * Dumbly emit a match pattern for all possible matching
1008                  * digits.  This could be improved in some cases using ranges,
1009                  * but it has the advantage of being trivially correct, and is
1010                  * often optimal.
1011                  */
1012                 *p++ = '[';
1013                 for (i = 0; i < 0x10; i++)
1014                         if ((i & mask) == nibble)
1015                                 p += sprintf(p, "%X", i);
1016                 *p++ = ']';
1017         }
1018 
1019         /* Ensure that the string remains NUL-terminated: */
1020         *p = '\0';
1021 
1022         /* Advance the caller's end-of-string pointer: */
1023         *outp = p;
1024 }
1025 
1026 /*
1027  * looks like: "amba:dN"
1028  *
1029  * N is exactly 8 digits, where each is an upper-case hex digit, or
1030  *      a ? or [] pattern matching exactly one digit.
1031  */
1032 static int do_amba_entry(const char *filename,
1033                          struct amba_id *id, char *alias)
1034 {
1035         unsigned int digit;
1036         char *p = alias;
1037 
1038         if ((id->id & id->mask) != id->id)
1039                 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1040                       "id=0x%08X, mask=0x%08X.  Please fix this driver.\n",
1041                       filename, id->id, id->mask);
1042 
1043         p += sprintf(alias, "amba:d");
1044         for (digit = 0; digit < 8; digit++)
1045                 append_nibble_mask(&p,
1046                                    (id->id >> (4 * (7 - digit))) & 0xf,
1047                                    (id->mask >> (4 * (7 - digit))) & 0xf);
1048 
1049         return 1;
1050 }
1051 ADD_TO_DEVTABLE("amba", struct amba_id, do_amba_entry);
1052 
1053 /* LOOKS like x86cpu:vendor:VVVV:family:FFFF:model:MMMM:feature:*,FEAT,*
1054  * All fields are numbers. It would be nicer to use strings for vendor
1055  * and feature, but getting those out of the build system here is too
1056  * complicated.
1057  */
1058 
1059 static int do_x86cpu_entry(const char *filename, struct x86_cpu_id *id,
1060                            char *alias)
1061 {
1062         id->feature = TO_NATIVE(id->feature);
1063         id->family = TO_NATIVE(id->family);
1064         id->model = TO_NATIVE(id->model);
1065         id->vendor = TO_NATIVE(id->vendor);
1066 
1067         strcpy(alias, "x86cpu:");
1068         ADD(alias, "vendor:",  id->vendor != X86_VENDOR_ANY, id->vendor);
1069         ADD(alias, ":family:", id->family != X86_FAMILY_ANY, id->family);
1070         ADD(alias, ":model:",  id->model  != X86_MODEL_ANY,  id->model);
1071         strcat(alias, ":feature:*");
1072         if (id->feature != X86_FEATURE_ANY)
1073                 sprintf(alias + strlen(alias), "%04X*", id->feature);
1074         return 1;
1075 }
1076 ADD_TO_DEVTABLE("x86cpu", struct x86_cpu_id, do_x86cpu_entry);
1077 
1078 /* Does namelen bytes of name exactly match the symbol? */
1079 static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1080 {
1081         if (namelen != strlen(symbol))
1082                 return false;
1083 
1084         return memcmp(name, symbol, namelen) == 0;
1085 }
1086 
1087 static void do_table(void *symval, unsigned long size,
1088                      unsigned long id_size,
1089                      const char *device_id,
1090                      void *function,
1091                      struct module *mod)
1092 {
1093         unsigned int i;
1094         char alias[500];
1095         int (*do_entry)(const char *, void *entry, char *alias) = function;
1096 
1097         device_id_check(mod->name, device_id, size, id_size, symval);
1098         /* Leave last one: it's the terminator. */
1099         size -= id_size;
1100 
1101         for (i = 0; i < size; i += id_size) {
1102                 if (do_entry(mod->name, symval+i, alias)) {
1103                         buf_printf(&mod->dev_table_buf,
1104                                    "MODULE_ALIAS(\"%s\");\n", alias);
1105                 }
1106         }
1107 }
1108 
1109 /* Create MODULE_ALIAS() statements.
1110  * At this time, we cannot write the actual output C source yet,
1111  * so we write into the mod->dev_table_buf buffer. */
1112 void handle_moddevtable(struct module *mod, struct elf_info *info,
1113                         Elf_Sym *sym, const char *symname)
1114 {
1115         void *symval;
1116         char *zeros = NULL;
1117         const char *name;
1118         unsigned int namelen;
1119 
1120         /* We're looking for a section relative symbol */
1121         if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1122                 return;
1123 
1124         /* We're looking for an object */
1125         if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1126                 return;
1127 
1128         /* All our symbols are of form <prefix>__mod_XXX_device_table. */
1129         name = strstr(symname, "__mod_");
1130         if (!name)
1131                 return;
1132         name += strlen("__mod_");
1133         namelen = strlen(name);
1134         if (namelen < strlen("_device_table"))
1135                 return;
1136         if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1137                 return;
1138         namelen -= strlen("_device_table");
1139 
1140         /* Handle all-NULL symbols allocated into .bss */
1141         if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1142                 zeros = calloc(1, sym->st_size);
1143                 symval = zeros;
1144         } else {
1145                 symval = (void *)info->hdr
1146                         + info->sechdrs[get_secindex(info, sym)].sh_offset
1147                         + sym->st_value;
1148         }
1149 
1150         /* First handle the "special" cases */
1151         if (sym_is(name, namelen, "usb"))
1152                 do_usb_table(symval, sym->st_size, mod);
1153         else if (sym_is(name, namelen, "pnp"))
1154                 do_pnp_device_entry(symval, sym->st_size, mod);
1155         else if (sym_is(name, namelen, "pnp_card"))
1156                 do_pnp_card_entries(symval, sym->st_size, mod);
1157         else {
1158                 struct devtable **p;
1159                 INIT_SECTION(__devtable);
1160 
1161                 for (p = __start___devtable; p < __stop___devtable; p++) {
1162                         if (sym_is(name, namelen, (*p)->device_id)) {
1163                                 do_table(symval, sym->st_size, (*p)->id_size,
1164                                          (*p)->device_id, (*p)->function, mod);
1165                                 break;
1166                         }
1167                 }
1168         }
1169         free(zeros);
1170 }
1171 
1172 /* Now add out buffered information to the generated C source */
1173 void add_moddevtable(struct buffer *buf, struct module *mod)
1174 {
1175         buf_printf(buf, "\n");
1176         buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1177         free(mod->dev_table_buf.p);
1178 }
1179 

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