[linux-block.git] / scripts / mod / file2alias.c

/* Simple code to turn various tables in an ELF file into alias definitions.
 * This deals with kernel datastructures where they should be
 * dealt with: in the kernel source.
 *
 * Copyright 2002-2003  Rusty Russell, IBM Corporation
 *           2003       Kai Germaschewski
 *
 *
 * This software may be used and distributed according to the terms
 * of the GNU General Public License, incorporated herein by reference.
 */

#include "modpost.h"

/* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
 * use either stdint.h or inttypes.h for the rest. */
#if KERNEL_ELFCLASS == ELFCLASS32
typedef Elf32_Addr	kernel_ulong_t;
#else
typedef Elf64_Addr	kernel_ulong_t;
#endif
#ifdef __sun__
#include <inttypes.h>
#else
#include <stdint.h>
#endif

#include <ctype.h>

typedef uint32_t	__u32;
typedef uint16_t	__u16;
typedef unsigned char	__u8;

/* Big exception to the "don't include kernel headers into userspace, which
 * even potentially has different endianness and word sizes, since 
 * we handle those differences explicitly below */
#include "../../include/linux/mod_devicetable.h"

#define ADD(str, sep, cond, field)                              \
do {                                                            \
        strcat(str, sep);                                       \
        if (cond)                                               \
                sprintf(str + strlen(str),                      \
                        sizeof(field) == 1 ? "%02X" :           \
                        sizeof(field) == 2 ? "%04X" :           \
                        sizeof(field) == 4 ? "%08X" : "",       \
                        field);                                 \
        else                                                    \
                sprintf(str + strlen(str), "*");                \
} while(0)

/* USB is special because the bcdDevice can be matched against a numeric range */
/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */
static void do_usb_entry(struct usb_device_id *id,
			 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
			 unsigned char range_lo, unsigned char range_hi,
			 struct module *mod)
{
	char alias[500];
	strcpy(alias, "usb:");
	ADD(alias, "v", id->match_flags&USB_DEVICE_ID_MATCH_VENDOR,
	    id->idVendor);
	ADD(alias, "p", id->match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
	    id->idProduct);

	strcat(alias, "d");
	if (bcdDevice_initial_digits)
		sprintf(alias + strlen(alias), "%0*X",
			bcdDevice_initial_digits, bcdDevice_initial);
	if (range_lo == range_hi)
		sprintf(alias + strlen(alias), "%u", range_lo);
	else if (range_lo > 0 || range_hi < 9)
		sprintf(alias + strlen(alias), "[%u-%u]", range_lo, range_hi);
	if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1))
		strcat(alias, "*");

	ADD(alias, "dc", id->match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
	    id->bDeviceClass);
	ADD(alias, "dsc",
	    id->match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
	    id->bDeviceSubClass);
	ADD(alias, "dp",
	    id->match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
	    id->bDeviceProtocol);
	ADD(alias, "ic",
	    id->match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
	    id->bInterfaceClass);
	ADD(alias, "isc",
	    id->match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
	    id->bInterfaceSubClass);
	ADD(alias, "ip",
	    id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
	    id->bInterfaceProtocol);

	/* Always end in a wildcard, for future extension */
	if (alias[strlen(alias)-1] != '*')
		strcat(alias, "*");
	buf_printf(&mod->dev_table_buf,
		   "MODULE_ALIAS(\"%s\");\n", alias);
}

static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod)
{
	unsigned int devlo, devhi;
	unsigned char chi, clo;
	int ndigits;

	id->match_flags = TO_NATIVE(id->match_flags);
	id->idVendor = TO_NATIVE(id->idVendor);
	id->idProduct = TO_NATIVE(id->idProduct);

	devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
		TO_NATIVE(id->bcdDevice_lo) : 0x0U;
	devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
		TO_NATIVE(id->bcdDevice_hi) : ~0x0U;

	/*
	 * Some modules (visor) have empty slots as placeholder for
	 * run-time specification that results in catch-all alias
	 */
	if (!(id->idVendor | id->bDeviceClass | id->bInterfaceClass))
		return;

	/* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
	for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
		clo = devlo & 0xf;
		chi = devhi & 0xf;
		if (chi > 9)	/* it's bcd not hex */
			chi = 9;
		devlo >>= 4;
		devhi >>= 4;

		if (devlo == devhi || !ndigits) {
			do_usb_entry(id, devlo, ndigits, clo, chi, mod);
			break;
		}

		if (clo > 0)
			do_usb_entry(id, devlo++, ndigits, clo, 9, mod);

		if (chi < 9)
			do_usb_entry(id, devhi--, ndigits, 0, chi, mod);
	}
}

static void do_usb_table(void *symval, unsigned long size,
			 struct module *mod)
{
	unsigned int i;
	const unsigned long id_size = sizeof(struct usb_device_id);

	if (size % id_size || size < id_size) {
		fprintf(stderr, "*** Warning: %s ids %lu bad size "
			"(each on %lu)\n", mod->name, size, id_size);
	}
	/* Leave last one: it's the terminator. */
	size -= id_size;

	for (i = 0; i < size; i += id_size)
		do_usb_entry_multi(symval + i, mod);
}

/* Looks like: ieee1394:venNmoNspNverN */
static int do_ieee1394_entry(const char *filename,
			     struct ieee1394_device_id *id, char *alias)
{
	id->match_flags = TO_NATIVE(id->match_flags);
	id->vendor_id = TO_NATIVE(id->vendor_id);
	id->model_id = TO_NATIVE(id->model_id);
	id->specifier_id = TO_NATIVE(id->specifier_id);
	id->version = TO_NATIVE(id->version);

	strcpy(alias, "ieee1394:");
	ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID,
	    id->vendor_id);
	ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID,
	    id->model_id);
	ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID,
	    id->specifier_id);
	ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION,
	    id->version);

	return 1;
}

/* Looks like: pci:vNdNsvNsdNbcNscNiN. */
static int do_pci_entry(const char *filename,
			struct pci_device_id *id, char *alias)
{
	/* Class field can be divided into these three. */
	unsigned char baseclass, subclass, interface,
		baseclass_mask, subclass_mask, interface_mask;

	id->vendor = TO_NATIVE(id->vendor);
	id->device = TO_NATIVE(id->device);
	id->subvendor = TO_NATIVE(id->subvendor);
	id->subdevice = TO_NATIVE(id->subdevice);
	id->class = TO_NATIVE(id->class);
	id->class_mask = TO_NATIVE(id->class_mask);

	strcpy(alias, "pci:");
	ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor);
	ADD(alias, "d", id->device != PCI_ANY_ID, id->device);
	ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor);
	ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice);

	baseclass = (id->class) >> 16;
	baseclass_mask = (id->class_mask) >> 16;
	subclass = (id->class) >> 8;
	subclass_mask = (id->class_mask) >> 8;
	interface = id->class;
	interface_mask = id->class_mask;

	if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
	    || (subclass_mask != 0 && subclass_mask != 0xFF)
	    || (interface_mask != 0 && interface_mask != 0xFF)) {
		fprintf(stderr,
			"*** Warning: Can't handle masks in %s:%04X\n",
			filename, id->class_mask);
		return 0;
	}

	ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
	ADD(alias, "sc", subclass_mask == 0xFF, subclass);
	ADD(alias, "i", interface_mask == 0xFF, interface);
	return 1;
}

/* looks like: "ccw:tNmNdtNdmN" */ 
static int do_ccw_entry(const char *filename,
			struct ccw_device_id *id, char *alias)
{
	id->match_flags = TO_NATIVE(id->match_flags);
	id->cu_type = TO_NATIVE(id->cu_type);
	id->cu_model = TO_NATIVE(id->cu_model);
	id->dev_type = TO_NATIVE(id->dev_type);
	id->dev_model = TO_NATIVE(id->dev_model);

	strcpy(alias, "ccw:");
	ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
	    id->cu_type);
	ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
	    id->cu_model);
	ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
	    id->dev_type);
	ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
	    id->dev_model);
	return 1;
}

/* Looks like: "serio:tyNprNidNexN" */
static int do_serio_entry(const char *filename,
			  struct serio_device_id *id, char *alias)
{
	id->type = TO_NATIVE(id->type);
	id->proto = TO_NATIVE(id->proto);
	id->id = TO_NATIVE(id->id);
	id->extra = TO_NATIVE(id->extra);

	strcpy(alias, "serio:");
	ADD(alias, "ty", id->type != SERIO_ANY, id->type);
	ADD(alias, "pr", id->proto != SERIO_ANY, id->proto);
	ADD(alias, "id", id->id != SERIO_ANY, id->id);
	ADD(alias, "ex", id->extra != SERIO_ANY, id->extra);

	return 1;
}

/* looks like: "pnp:dD" */
static int do_pnp_entry(const char *filename,
			struct pnp_device_id *id, char *alias)
{
	sprintf(alias, "pnp:d%s", id->id);
	return 1;
}

/* looks like: "pnp:cCdD..." */
static int do_pnp_card_entry(const char *filename,
			struct pnp_card_device_id *id, char *alias)
{
	int i;

	sprintf(alias, "pnp:c%s", id->id);
	for (i = 0; i < PNP_MAX_DEVICES; i++) {
		if (! *id->devs[i].id)
			break;
		sprintf(alias + strlen(alias), "d%s", id->devs[i].id);
	}
	return 1;
}

/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
static int do_pcmcia_entry(const char *filename,
			   struct pcmcia_device_id *id, char *alias)
{
	unsigned int i;

	id->manf_id = TO_NATIVE(id->manf_id);
	id->card_id = TO_NATIVE(id->card_id);
	id->func_id = TO_NATIVE(id->func_id);
	id->function = TO_NATIVE(id->function);
	id->device_no = TO_NATIVE(id->device_no);
	for (i=0; i<4; i++) {
		id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]);
       }

       strcpy(alias, "pcmcia:");
       ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
	   id->manf_id);
       ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
	   id->card_id);
       ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
	   id->func_id);
       ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
	   id->function);
       ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
	   id->device_no);
       ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]);
       ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]);
       ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]);
       ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]);

       return 1;
}


static int do_of_entry (const char *filename, struct of_device_id *of, char *alias)
{
    char *tmp;
    sprintf (alias, "of:N%sT%sC%s",
                    of->name[0] ? of->name : "*",
                    of->type[0] ? of->type : "*",
                    of->compatible[0] ? of->compatible : "*");

    /* Replace all whitespace with underscores */
    for (tmp = alias; tmp && *tmp; tmp++)
        if (isspace (*tmp))
            *tmp = '_';

    return 1;
}

/* Ignore any prefix, eg. v850 prepends _ */
static inline int sym_is(const char *symbol, const char *name)
{
	const char *match;

	match = strstr(symbol, name);
	if (!match)
		return 0;
	return match[strlen(symbol)] == '\0';
}

static void do_table(void *symval, unsigned long size,
		     unsigned long id_size,
		     void *function,
		     struct module *mod)
{
	unsigned int i;
	char alias[500];
	int (*do_entry)(const char *, void *entry, char *alias) = function;

	if (size % id_size || size < id_size) {
		fprintf(stderr, "*** Warning: %s ids %lu bad size "
			"(each on %lu)\n", mod->name, size, id_size);
	}
	/* Leave last one: it's the terminator. */
	size -= id_size;

	for (i = 0; i < size; i += id_size) {
		if (do_entry(mod->name, symval+i, alias)) {
			/* Always end in a wildcard, for future extension */
			if (alias[strlen(alias)-1] != '*')
				strcat(alias, "*");
			buf_printf(&mod->dev_table_buf,
				   "MODULE_ALIAS(\"%s\");\n", alias);
		}
	}
}

/* Create MODULE_ALIAS() statements.
 * At this time, we cannot write the actual output C source yet,
 * so we write into the mod->dev_table_buf buffer. */
void handle_moddevtable(struct module *mod, struct elf_info *info,
			Elf_Sym *sym, const char *symname)
{
	void *symval;

	/* We're looking for a section relative symbol */
	if (!sym->st_shndx || sym->st_shndx >= info->hdr->e_shnum)
		return;

	symval = (void *)info->hdr
		+ info->sechdrs[sym->st_shndx].sh_offset
		+ sym->st_value;

	if (sym_is(symname, "__mod_pci_device_table"))
		do_table(symval, sym->st_size, sizeof(struct pci_device_id),
			 do_pci_entry, mod);
	else if (sym_is(symname, "__mod_usb_device_table"))
		/* special case to handle bcdDevice ranges */
		do_usb_table(symval, sym->st_size, mod);
	else if (sym_is(symname, "__mod_ieee1394_device_table"))
		do_table(symval, sym->st_size, sizeof(struct ieee1394_device_id),
			 do_ieee1394_entry, mod);
	else if (sym_is(symname, "__mod_ccw_device_table"))
		do_table(symval, sym->st_size, sizeof(struct ccw_device_id),
			 do_ccw_entry, mod);
	else if (sym_is(symname, "__mod_serio_device_table"))
		do_table(symval, sym->st_size, sizeof(struct serio_device_id),
			 do_serio_entry, mod);
	else if (sym_is(symname, "__mod_pnp_device_table"))
		do_table(symval, sym->st_size, sizeof(struct pnp_device_id),
			 do_pnp_entry, mod);
	else if (sym_is(symname, "__mod_pnp_card_device_table"))
		do_table(symval, sym->st_size, sizeof(struct pnp_card_device_id),
			 do_pnp_card_entry, mod);
	else if (sym_is(symname, "__mod_pcmcia_device_table"))
		do_table(symval, sym->st_size, sizeof(struct pcmcia_device_id),
			 do_pcmcia_entry, mod);
        else if (sym_is(symname, "__mod_of_device_table"))
		do_table(symval, sym->st_size, sizeof(struct of_device_id),
			 do_of_entry, mod);

}

/* Now add out buffered information to the generated C source */
void add_moddevtable(struct buffer *buf, struct module *mod)
{
	buf_printf(buf, "\n");
	buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
	free(mod->dev_table_buf.p);
}
Commit	Line	Data
1da177e4 LT	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	#else
	20	typedef Elf64_Addr kernel_ulong_t;
	21	#endif
	22	#ifdef __sun__
	23	#include <inttypes.h>
	24	#else
	25	#include <stdint.h>
	26	#endif
	27
5e655772 JM	28	#include <ctype.h>
5e655772 JM	29
1da177e4 LT	30	typedef uint32_t __u32;
	31	typedef uint16_t __u16;
	32	typedef unsigned char __u8;
	33
	34	/* Big exception to the "don't include kernel headers into userspace, which
	35	* even potentially has different endianness and word sizes, since
	36	* we handle those differences explicitly below */
	37	#include "../../include/linux/mod_devicetable.h"
	38
	39	#define ADD(str, sep, cond, field) \
	40	do { \
	41	strcat(str, sep); \
	42	if (cond) \
	43	sprintf(str + strlen(str), \
	44	sizeof(field) == 1 ? "%02X" : \
	45	sizeof(field) == 2 ? "%04X" : \
	46	sizeof(field) == 4 ? "%08X" : "", \
	47	field); \
	48	else \
	49	sprintf(str + strlen(str), "*"); \
	50	} while(0)
	51
b19dcd93 RK	52	/* USB is special because the bcdDevice can be matched against a numeric range */
	53	/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */
	54	static void do_usb_entry(struct usb_device_id *id,
	55	unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
	56	unsigned char range_lo, unsigned char range_hi,
	57	struct module *mod)
1da177e4	58	{
b19dcd93	59	char alias[500];
1da177e4 LT	60	strcpy(alias, "usb:");
	61	ADD(alias, "v", id->match_flags&USB_DEVICE_ID_MATCH_VENDOR,
	62	id->idVendor);
	63	ADD(alias, "p", id->match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
	64	id->idProduct);
b19dcd93 RK	65
	66	strcat(alias, "d");
	67	if (bcdDevice_initial_digits)
	68	sprintf(alias + strlen(alias), "%0*X",
	69	bcdDevice_initial_digits, bcdDevice_initial);
	70	if (range_lo == range_hi)
	71	sprintf(alias + strlen(alias), "%u", range_lo);
	72	else if (range_lo > 0 \|\| range_hi < 9)
	73	sprintf(alias + strlen(alias), "[%u-%u]", range_lo, range_hi);
	74	if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1))
	75	strcat(alias, "*");
	76
1da177e4 LT	77	ADD(alias, "dc", id->match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
	78	id->bDeviceClass);
	79	ADD(alias, "dsc",
	80	id->match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
	81	id->bDeviceSubClass);
	82	ADD(alias, "dp",
	83	id->match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
	84	id->bDeviceProtocol);
	85	ADD(alias, "ic",
	86	id->match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
	87	id->bInterfaceClass);
	88	ADD(alias, "isc",
	89	id->match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
	90	id->bInterfaceSubClass);
	91	ADD(alias, "ip",
	92	id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
	93	id->bInterfaceProtocol);
b19dcd93 RK	94
	95	/* Always end in a wildcard, for future extension */
	96	if (alias[strlen(alias)-1] != '*')
	97	strcat(alias, "*");
	98	buf_printf(&mod->dev_table_buf,
	99	"MODULE_ALIAS(\"%s\");\n", alias);
	100	}
	101
	102	static void do_usb_entry_multi(struct usb_device_id id, struct module mod)
	103	{
	104	unsigned int devlo, devhi;
	105	unsigned char chi, clo;
	106	int ndigits;
	107
	108	id->match_flags = TO_NATIVE(id->match_flags);
	109	id->idVendor = TO_NATIVE(id->idVendor);
	110	id->idProduct = TO_NATIVE(id->idProduct);
	111
	112	devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
	113	TO_NATIVE(id->bcdDevice_lo) : 0x0U;
	114	devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
	115	TO_NATIVE(id->bcdDevice_hi) : ~0x0U;
	116
	117	/*
	118	* Some modules (visor) have empty slots as placeholder for
	119	* run-time specification that results in catch-all alias
	120	*/
	121	if (!(id->idVendor \| id->bDeviceClass \| id->bInterfaceClass))
	122	return;
	123
	124	/* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
	125	for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
	126	clo = devlo & 0xf;
	127	chi = devhi & 0xf;
	128	if (chi > 9) /* it's bcd not hex */
	129	chi = 9;
	130	devlo >>= 4;
	131	devhi >>= 4;
	132
	133	if (devlo == devhi \|\| !ndigits) {
	134	do_usb_entry(id, devlo, ndigits, clo, chi, mod);
	135	break;
	136	}
	137
	138	if (clo > 0)
	139	do_usb_entry(id, devlo++, ndigits, clo, 9, mod);
	140
	141	if (chi < 9)
	142	do_usb_entry(id, devhi--, ndigits, 0, chi, mod);
	143	}
	144	}
	145
	146	static void do_usb_table(void *symval, unsigned long size,
	147	struct module *mod)
	148	{
	149	unsigned int i;
	150	const unsigned long id_size = sizeof(struct usb_device_id);
	151
	152	if (size % id_size \|\| size < id_size) {
	153	fprintf(stderr, "*** Warning: %s ids %lu bad size "
	154	"(each on %lu)\n", mod->name, size, id_size);
	155	}
	156	/* Leave last one: it's the terminator. */
	157	size -= id_size;
158
159	for (i = 0; i < size; i += id_size)
160	do_usb_entry_multi(symval + i, mod);
1da177e4 LT	161	}
	162
	163	/* Looks like: ieee1394:venNmoNspNverN */
	164	static int do_ieee1394_entry(const char *filename,
	165	struct ieee1394_device_id id, char alias)
	166	{
	167	id->match_flags = TO_NATIVE(id->match_flags);
	168	id->vendor_id = TO_NATIVE(id->vendor_id);
	169	id->model_id = TO_NATIVE(id->model_id);
	170	id->specifier_id = TO_NATIVE(id->specifier_id);
	171	id->version = TO_NATIVE(id->version);
	172
	173	strcpy(alias, "ieee1394:");
	174	ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID,
	175	id->vendor_id);
	176	ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID,
	177	id->model_id);
	178	ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID,
	179	id->specifier_id);
	180	ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION,
	181	id->version);
	182
	183	return 1;
	184	}
	185
	186	/* Looks like: pci:vNdNsvNsdNbcNscNiN. */
	187	static int do_pci_entry(const char *filename,
	188	struct pci_device_id id, char alias)
	189	{
	190	/* Class field can be divided into these three. */
	191	unsigned char baseclass, subclass, interface,
	192	baseclass_mask, subclass_mask, interface_mask;
	193
	194	id->vendor = TO_NATIVE(id->vendor);
	195	id->device = TO_NATIVE(id->device);
	196	id->subvendor = TO_NATIVE(id->subvendor);
	197	id->subdevice = TO_NATIVE(id->subdevice);
	198	id->class = TO_NATIVE(id->class);
	199	id->class_mask = TO_NATIVE(id->class_mask);
	200
	201	strcpy(alias, "pci:");
	202	ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor);
	203	ADD(alias, "d", id->device != PCI_ANY_ID, id->device);
	204	ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor);
	205	ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice);
	206
	207	baseclass = (id->class) >> 16;
	208	baseclass_mask = (id->class_mask) >> 16;
	209	subclass = (id->class) >> 8;
	210	subclass_mask = (id->class_mask) >> 8;
	211	interface = id->class;
	212	interface_mask = id->class_mask;
	213
	214	if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
	215	\|\| (subclass_mask != 0 && subclass_mask != 0xFF)
	216	\|\| (interface_mask != 0 && interface_mask != 0xFF)) {
	217	fprintf(stderr,
	218	"*** Warning: Can't handle masks in %s:%04X\n",
	219	filename, id->class_mask);
	220	return 0;
	221	}
	222
	223	ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
	224	ADD(alias, "sc", subclass_mask == 0xFF, subclass);
225	ADD(alias, "i", interface_mask == 0xFF, interface);
226	return 1;
227	}
228
229	/* looks like: "ccw:tNmNdtNdmN" */
230	static int do_ccw_entry(const char *filename,
231	struct ccw_device_id id, char alias)
232	{
233	id->match_flags = TO_NATIVE(id->match_flags);
234	id->cu_type = TO_NATIVE(id->cu_type);
235	id->cu_model = TO_NATIVE(id->cu_model);
236	id->dev_type = TO_NATIVE(id->dev_type);
237	id->dev_model = TO_NATIVE(id->dev_model);
238
239	strcpy(alias, "ccw:");
240	ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
241	id->cu_type);
242	ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
243	id->cu_model);
244	ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
245	id->dev_type);
246	ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
247	id->dev_model);
248	return 1;
249	}
250
251	/* Looks like: "serio:tyNprNidNexN" */
252	static int do_serio_entry(const char *filename,
253	struct serio_device_id id, char alias)
254	{
255	id->type = TO_NATIVE(id->type);
256	id->proto = TO_NATIVE(id->proto);
257	id->id = TO_NATIVE(id->id);
258	id->extra = TO_NATIVE(id->extra);
259
260	strcpy(alias, "serio:");
261	ADD(alias, "ty", id->type != SERIO_ANY, id->type);
262	ADD(alias, "pr", id->proto != SERIO_ANY, id->proto);
263	ADD(alias, "id", id->id != SERIO_ANY, id->id);
264	ADD(alias, "ex", id->extra != SERIO_ANY, id->extra);
265
266	return 1;
267	}
268
269	/* looks like: "pnp:dD" */
270	static int do_pnp_entry(const char *filename,
271	struct pnp_device_id id, char alias)
272	{
273	sprintf(alias, "pnp:d%s", id->id);
274	return 1;
275	}
276
277	/* looks like: "pnp:cCdD..." */
278	static int do_pnp_card_entry(const char *filename,
279	struct pnp_card_device_id id, char alias)
280	{
281	int i;
282
283	sprintf(alias, "pnp:c%s", id->id);
284	for (i = 0; i < PNP_MAX_DEVICES; i++) {
285	if (! *id->devs[i].id)
286	break;
287	sprintf(alias + strlen(alias), "d%s", id->devs[i].id);
288	}
289	return 1;
290	}
291
90829cfe DB	292	/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
	293	static int do_pcmcia_entry(const char *filename,
	294	struct pcmcia_device_id id, char alias)
	295	{
	296	unsigned int i;
	297
	298	id->manf_id = TO_NATIVE(id->manf_id);
	299	id->card_id = TO_NATIVE(id->card_id);
	300	id->func_id = TO_NATIVE(id->func_id);
	301	id->function = TO_NATIVE(id->function);
	302	id->device_no = TO_NATIVE(id->device_no);
	303	for (i=0; i<4; i++) {
	304	id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]);
	305	}
	306
	307	strcpy(alias, "pcmcia:");
	308	ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
	309	id->manf_id);
	310	ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
	311	id->card_id);
	312	ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
	313	id->func_id);
	314	ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
	315	id->function);
	316	ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
	317	id->device_no);
	318	ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]);
	319	ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]);
	320	ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]);
	321	ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]);
	322
	323	return 1;
	324	}
	325
	326
	327
5e655772 JM	328	static int do_of_entry (const char filename, struct of_device_id of, char *alias)
	329	{
	330	char *tmp;
	331	sprintf (alias, "of:N%sT%sC%s",
	332	of->name[0] ? of->name : "*",
	333	of->type[0] ? of->type : "*",
	334	of->compatible[0] ? of->compatible : "*");
	335
	336	/* Replace all whitespace with underscores */
	337	for (tmp = alias; tmp && *tmp; tmp++)
	338	if (isspace (*tmp))
	339	*tmp = '_';
	340
	341	return 1;
	342	}
	343
1da177e4 LT	344	/* Ignore any prefix, eg. v850 prepends _ */
	345	static inline int sym_is(const char symbol, const char name)
	346	{
	347	const char *match;
	348
	349	match = strstr(symbol, name);
	350	if (!match)
	351	return 0;
	352	return match[strlen(symbol)] == '\0';
	353	}
	354
	355	static void do_table(void *symval, unsigned long size,
	356	unsigned long id_size,
	357	void *function,
	358	struct module *mod)
	359	{
	360	unsigned int i;
	361	char alias[500];
	362	int (do_entry)(const char , void entry, char alias) = function;
	363
	364	if (size % id_size \|\| size < id_size) {
	365	fprintf(stderr, "*** Warning: %s ids %lu bad size "
	366	"(each on %lu)\n", mod->name, size, id_size);
	367	}
	368	/* Leave last one: it's the terminator. */
	369	size -= id_size;
	370
	371	for (i = 0; i < size; i += id_size) {
	372	if (do_entry(mod->name, symval+i, alias)) {
	373	/* Always end in a wildcard, for future extension */
	374	if (alias[strlen(alias)-1] != '*')
	375	strcat(alias, "*");
	376	buf_printf(&mod->dev_table_buf,
	377	"MODULE_ALIAS(\"%s\");\n", alias);
	378	}
	379	}
	380	}
	381
	382	/* Create MODULE_ALIAS() statements.
	383	* At this time, we cannot write the actual output C source yet,
	384	* so we write into the mod->dev_table_buf buffer. */
	385	void handle_moddevtable(struct module mod, struct elf_info info,
	386	Elf_Sym sym, const char symname)
	387	{
	388	void *symval;
	389
	390	/* We're looking for a section relative symbol */
	391	if (!sym->st_shndx \|\| sym->st_shndx >= info->hdr->e_shnum)
	392	return;
	393
	394	symval = (void *)info->hdr
	395	+ info->sechdrs[sym->st_shndx].sh_offset
	396	+ sym->st_value;
	397
	398	if (sym_is(symname, "__mod_pci_device_table"))
	399	do_table(symval, sym->st_size, sizeof(struct pci_device_id),
	400	do_pci_entry, mod);
	401	else if (sym_is(symname, "__mod_usb_device_table"))
b19dcd93 RK	402	/* special case to handle bcdDevice ranges */
b19dcd93 RK	403	do_usb_table(symval, sym->st_size, mod);
1da177e4 LT	404	else if (sym_is(symname, "__mod_ieee1394_device_table"))
	405	do_table(symval, sym->st_size, sizeof(struct ieee1394_device_id),
	406	do_ieee1394_entry, mod);
	407	else if (sym_is(symname, "__mod_ccw_device_table"))
	408	do_table(symval, sym->st_size, sizeof(struct ccw_device_id),
	409	do_ccw_entry, mod);
	410	else if (sym_is(symname, "__mod_serio_device_table"))
	411	do_table(symval, sym->st_size, sizeof(struct serio_device_id),
	412	do_serio_entry, mod);
	413	else if (sym_is(symname, "__mod_pnp_device_table"))
	414	do_table(symval, sym->st_size, sizeof(struct pnp_device_id),
	415	do_pnp_entry, mod);
	416	else if (sym_is(symname, "__mod_pnp_card_device_table"))
	417	do_table(symval, sym->st_size, sizeof(struct pnp_card_device_id),
	418	do_pnp_card_entry, mod);
90829cfe DB	419	else if (sym_is(symname, "__mod_pcmcia_device_table"))
	420	do_table(symval, sym->st_size, sizeof(struct pcmcia_device_id),
	421	do_pcmcia_entry, mod);
5e655772 JM	422	else if (sym_is(symname, "__mod_of_device_table"))
	423	do_table(symval, sym->st_size, sizeof(struct of_device_id),
	424	do_of_entry, mod);
	425
1da177e4 LT	426	}
	427
	428	/* Now add out buffered information to the generated C source */
	429	void add_moddevtable(struct buffer buf, struct module mod)
	430	{
	431	buf_printf(buf, "\n");
	432	buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
	433	free(mod->dev_table_buf.p);
	434	}