[linux-2.6-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

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;
}

/* 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);
}

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