add modpost

9 files changed, 3154 insertions, 1 deletions

diff --git a/scripts/Makefile b/scripts/Makefile
index 5ed6548230..cb08458ff9 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -22,7 +22,7 @@ always		:= $(hostprogs-y) $(hostprogs-m)
 hostprogs-y += unifdef
 
 #subdir-$(CONFIG_MODVERSIONS) += genksyms
-#subdir-y                     += mod
+subdir-y                     += mod
 
 # Let clean descend into subdirs
 subdir-	+= basic kconfig
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
new file mode 100644
index 0000000000..0278d29a5f
--- /dev/null
+++ b/scripts/Makefile.modpost
@@ -0,0 +1,132 @@
+# ===========================================================================
+# Module versions
+# ===========================================================================
+#
+# Stage one of module building created the following:
+# a) The individual .o files used for the module
+# b) A <module>.o file which is the .o files above linked together
+# c) A <module>.mod file in $(MODVERDIR)/, listing the name of the
+#    the preliminary <module>.o file, plus all .o files
+
+# Stage 2 is handled by this file and does the following
+# 1) Find all modules from the files listed in $(MODVERDIR)/
+# 2) modpost is then used to
+# 3)  create one <module>.mod.c file pr. module
+# 4)  create one Module.symvers file with CRC for all exported symbols
+# 5) compile all <module>.mod.c files
+# 6) final link of the module to a <module.ko> file
+
+# Step 3 is used to place certain information in the module's ELF
+# section, including information such as:
+#   Version magic (see include/vermagic.h for full details)
+#     - Kernel release
+#     - SMP is CONFIG_SMP
+#     - PREEMPT is CONFIG_PREEMPT
+#     - GCC Version
+#   Module info
+#     - Module version (MODULE_VERSION)
+#     - Module alias'es (MODULE_ALIAS)
+#     - Module license (MODULE_LICENSE)
+#     - See include/linux/module.h for more details
+
+# Step 4 is solely used to allow module versioning in external modules,
+# where the CRC of each module is retrieved from the Module.symers file.
+
+# KBUILD_MODPOST_WARN can be set to avoid error out in case of undefined
+# symbols in the final module linking stage
+# KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules.
+# This is solely usefull to speed up test compiles
+PHONY := _modpost
+_modpost: __modpost
+
+include include/config/auto.conf
+include scripts/Kbuild.include
+include scripts/Makefile.lib
+
+kernelsymfile := $(objtree)/Module.symvers
+modulesymfile := $(firstword $(KBUILD_EXTMOD))/Module.symvers
+
+# Step 1), find all modules listed in $(MODVERDIR)/
+__modules := $(sort $(shell grep -h '\.ko' /dev/null $(wildcard $(MODVERDIR)/*.mod)))
+modules   := $(patsubst %.o,%.ko, $(wildcard $(__modules:.ko=.o)))
+
+# Stop after building .o files if NOFINAL is set. Makes compile tests quicker
+_modpost: $(if $(KBUILD_MODPOST_NOFINAL), $(modules:.ko:.o),$(modules))
+
+
+# Step 2), invoke modpost
+#  Includes step 3,4
+quiet_cmd_modpost = MODPOST $(words $(filter-out uboot FORCE, $^)) modules
+      cmd_modpost = scripts/mod/modpost            \
+        $(if $(CONFIG_MODVERSIONS),-m)             \
+	$(if $(CONFIG_MODULE_SRCVERSION_ALL),-a,)  \
+	$(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile) \
+	$(if $(KBUILD_EXTMOD),-I $(modulesymfile)) \
+	$(if $(KBUILD_EXTMOD),-o $(modulesymfile)) \
+	$(if $(KBUILD_EXTMOD)$(KBUILD_MODPOST_WARN),-w)
+
+PHONY += __modpost
+__modpost: $(modules:.ko=.o) FORCE
+	$(call cmd,modpost) $(wildcard uboot) $(filter-out FORCE,$^)
+
+quiet_cmd_kernel-mod = MODPOST $@
+      cmd_kernel-mod = $(cmd_modpost) $@
+
+PHONY += uboot 
+uboot.o: FORCE
+	$(call cmd,kernel-mod)
+
+# Declare generated files as targets for modpost
+$(symverfile):         __modpost ;
+$(modules:.ko=.mod.c): __modpost ;
+
+
+# Step 5), compile all *.mod.c files
+
+# modname is set to make c_flags define KBUILD_MODNAME
+modname = $(notdir $(@:.mod.o=))
+
+quiet_cmd_cc_o_c = CC      $@
+      cmd_cc_o_c = $(CC) $(c_flags) $(CFLAGS_MODULE)	\
+		   -c -o $@ $<
+
+$(modules:.ko=.mod.o): %.mod.o: %.mod.c FORCE
+	$(call if_changed_dep,cc_o_c)
+
+targets += $(modules:.ko=.mod.o)
+
+# Step 6), final link of the modules
+quiet_cmd_ld_ko_o = LD [M]  $@
+      cmd_ld_ko_o = $(LD) -r $(LDFLAGS) $(LDFLAGS_MODULE) -o $@		\
+			  $(filter-out FORCE,$^)
+
+$(modules): %.ko :%.o %.mod.o FORCE
+	$(call if_changed,ld_ko_o)
+
+targets += $(modules)
+
+
+# Add FORCE to the prequisites of a target to force it to be always rebuilt.
+# ---------------------------------------------------------------------------
+
+PHONY += FORCE
+
+FORCE:
+
+# Read all saved command lines and dependencies for the $(targets) we
+# may be building above, using $(if_changed{,_dep}). As an
+# optimization, we don't need to read them if the target does not
+# exist, we will rebuild anyway in that case.
+
+targets := $(wildcard $(sort $(targets)))
+cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
+
+ifneq ($(cmd_files),)
+  include $(cmd_files)
+endif
+
+
+# Declare the contents of the .PHONY variable as phony.  We keep that
+# information in a variable se we can use it in if_changed and friends.
+
+.PHONY: $(PHONY)
diff --git a/scripts/mod/Makefile b/scripts/mod/Makefile
new file mode 100644
index 0000000000..c5aa348924
--- /dev/null
+++ b/scripts/mod/Makefile
@@ -0,0 +1,16 @@
+hostprogs-y	:= modpost mk_elfconfig
+always		:= $(hostprogs-y) empty.o
+
+modpost-objs	:= modpost.o sumversion.o
+
+# dependencies on generated files need to be listed explicitly
+
+$(obj)/modpost.o $(obj)/file2alias.o $(obj)/sumversion.o: $(obj)/elfconfig.h
+
+quiet_cmd_elfconfig = MKELF   $@
+      cmd_elfconfig = $(obj)/mk_elfconfig $(ARCH) < $< > $@
+
+$(obj)/elfconfig.h: $(obj)/empty.o $(obj)/mk_elfconfig FORCE
+	$(call if_changed,elfconfig)
+
+targets += elfconfig.h
diff --git a/scripts/mod/empty.c b/scripts/mod/empty.c
new file mode 100644
index 0000000000..49839cc4ff
--- /dev/null
+++ b/scripts/mod/empty.c
@@ -0,0 +1 @@
+/* empty file to figure out endianness / word size */
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
new file mode 100644
index 0000000000..f646381dc0
--- /dev/null
+++ b/scripts/mod/file2alias.c
@@ -0,0 +1,598 @@
+/* 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;
+#define BITS_PER_LONG 32
+#else
+typedef Elf64_Addr	kernel_ulong_t;
+#define BITS_PER_LONG 64
+#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)
+
+/**
+ * Check that sizeof(device_id type) are consistent with size of section
+ * in .o file. If in-consistent then userspace and kernel does not agree
+ * on actual size which is a bug.
+ **/
+static void device_id_size_check(const char *modname, const char *device_id,
+				 unsigned long size, unsigned long id_size)
+{
+	if (size % id_size || size < id_size) {
+		fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
+		      "of the size of section __mod_%s_device_table=%lu.\n"
+		      "Fix definition of struct %s_device_id "
+		      "in mod_devicetable.h\n",
+		      modname, device_id, id_size, device_id, size, device_id);
+	}
+}
+
+/* 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);
+
+	device_id_size_check(mod->name, "usb", 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)) {
+		warn("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_MODEL,
+	    id->dev_model);
+	return 1;
+}
+
+/* looks like: "ap:tN" */
+static int do_ap_entry(const char *filename,
+		       struct ap_device_id *id, char *alias)
+{
+	sprintf(alias, "ap:t%02X", id->dev_type);
+	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->match_flags = TO_NATIVE(id->match_flags);
+	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)
+{
+    int len;
+    char *tmp;
+    len = sprintf (alias, "of:N%sT%s",
+                    of->name[0] ? of->name : "*",
+                    of->type[0] ? of->type : "*");
+
+    if (of->compatible[0])
+        sprintf (&alias[len], "%sC%s",
+                     of->type[0] ? "*" : "",
+                     of->compatible);
+
+    /* Replace all whitespace with underscores */
+    for (tmp = alias; tmp && *tmp; tmp++)
+        if (isspace (*tmp))
+            *tmp = '_';
+
+    return 1;
+}
+
+static int do_vio_entry(const char *filename, struct vio_device_id *vio,
+		char *alias)
+{
+	char *tmp;
+
+	sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*",
+			vio->compat[0] ? vio->compat : "*");
+
+	/* Replace all whitespace with underscores */
+	for (tmp = alias; tmp && *tmp; tmp++)
+		if (isspace (*tmp))
+			*tmp = '_';
+
+	return 1;
+}
+
+static int do_i2c_entry(const char *filename, struct i2c_device_id *i2c, char *alias)
+{
+	strcpy(alias, "i2c:");
+	ADD(alias, "id", 1, i2c->id);
+	return 1;
+}
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+static void do_input(char *alias,
+		     kernel_ulong_t *arr, unsigned int min, unsigned int max)
+{
+	unsigned int i;
+
+	for (i = min; i < max; i++)
+		if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
+			sprintf(alias + strlen(alias), "%X,*", i);
+}
+
+/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
+static int do_input_entry(const char *filename, struct input_device_id *id,
+			  char *alias)
+{
+	sprintf(alias, "input:");
+
+	ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype);
+	ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor);
+	ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product);
+	ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version);
+
+	sprintf(alias + strlen(alias), "-e*");
+	if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT)
+		do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX);
+	sprintf(alias + strlen(alias), "k*");
+	if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
+		do_input(alias, id->keybit,
+			 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
+			 INPUT_DEVICE_ID_KEY_MAX);
+	sprintf(alias + strlen(alias), "r*");
+	if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT)
+		do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX);
+	sprintf(alias + strlen(alias), "a*");
+	if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
+		do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
+	sprintf(alias + strlen(alias), "m*");
+	if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT)
+		do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
+	sprintf(alias + strlen(alias), "l*");
+	if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
+		do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
+	sprintf(alias + strlen(alias), "s*");
+	if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
+		do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
+	sprintf(alias + strlen(alias), "f*");
+	if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT)
+		do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
+	sprintf(alias + strlen(alias), "w*");
+	if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT)
+		do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX);
+	return 1;
+}
+
+static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa,
+		char *alias)
+{
+	if (eisa->sig[0])
+		sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig);
+	return 1;
+}
+
+/* Looks like: parisc:tNhvNrevNsvN */
+static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
+		char *alias)
+{
+	id->hw_type = TO_NATIVE(id->hw_type);
+	id->hversion = TO_NATIVE(id->hversion);
+	id->hversion_rev = TO_NATIVE(id->hversion_rev);
+	id->sversion = TO_NATIVE(id->sversion);
+
+	strcpy(alias, "parisc:");
+	ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type);
+	ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion);
+	ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev);
+	ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion);
+
+	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,
+		     const char *device_id,
+		     void *function,
+		     struct module *mod)
+{
+	unsigned int i;
+	char alias[500];
+	int (*do_entry)(const char *, void *entry, char *alias) = function;
+
+	device_id_size_check(mod->name, device_id, 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), "pci",
+			 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), "ieee1394",
+			 do_ieee1394_entry, mod);
+	else if (sym_is(symname, "__mod_ccw_device_table"))
+		do_table(symval, sym->st_size,
+			 sizeof(struct ccw_device_id), "ccw",
+			 do_ccw_entry, mod);
+	else if (sym_is(symname, "__mod_ap_device_table"))
+		do_table(symval, sym->st_size,
+			 sizeof(struct ap_device_id), "ap",
+			 do_ap_entry, mod);
+	else if (sym_is(symname, "__mod_serio_device_table"))
+		do_table(symval, sym->st_size,
+			 sizeof(struct serio_device_id), "serio",
+			 do_serio_entry, mod);
+	else if (sym_is(symname, "__mod_pnp_device_table"))
+		do_table(symval, sym->st_size,
+			 sizeof(struct pnp_device_id), "pnp",
+			 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), "pnp_card",
+			 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), "pcmcia",
+			 do_pcmcia_entry, mod);
+        else if (sym_is(symname, "__mod_of_device_table"))
+		do_table(symval, sym->st_size,
+			 sizeof(struct of_device_id), "of",
+			 do_of_entry, mod);
+        else if (sym_is(symname, "__mod_vio_device_table"))
+		do_table(symval, sym->st_size,
+			 sizeof(struct vio_device_id), "vio",
+			 do_vio_entry, mod);
+	else if (sym_is(symname, "__mod_i2c_device_table"))
+		do_table(symval, sym->st_size,
+			 sizeof(struct i2c_device_id), "i2c",
+			 do_i2c_entry, mod);
+	else if (sym_is(symname, "__mod_input_device_table"))
+		do_table(symval, sym->st_size,
+			 sizeof(struct input_device_id), "input",
+			 do_input_entry, mod);
+	else if (sym_is(symname, "__mod_eisa_device_table"))
+		do_table(symval, sym->st_size,
+			 sizeof(struct eisa_device_id), "eisa",
+			 do_eisa_entry, mod);
+	else if (sym_is(symname, "__mod_parisc_device_table"))
+		do_table(symval, sym->st_size,
+			 sizeof(struct parisc_device_id), "parisc",
+			 do_parisc_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);
+}
diff --git a/scripts/mod/mk_elfconfig.c b/scripts/mod/mk_elfconfig.c
new file mode 100644
index 0000000000..db3881f14c
--- /dev/null
+++ b/scripts/mod/mk_elfconfig.c
@@ -0,0 +1,66 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <elf.h>
+
+int
+main(int argc, char **argv)
+{
+	unsigned char ei[EI_NIDENT];
+	union { short s; char c[2]; } endian_test;
+
+	if (argc != 2) {
+		fprintf(stderr, "Error: no arch\n");
+	}
+	if (fread(ei, 1, EI_NIDENT, stdin) != EI_NIDENT) {
+		fprintf(stderr, "Error: input truncated\n");
+		return 1;
+	}
+	if (memcmp(ei, ELFMAG, SELFMAG) != 0) {
+		fprintf(stderr, "Error: not ELF\n");
+		return 1;
+	}
+	switch (ei[EI_CLASS]) {
+	case ELFCLASS32:
+		printf("#define KERNEL_ELFCLASS ELFCLASS32\n");
+		break;
+	case ELFCLASS64:
+		printf("#define KERNEL_ELFCLASS ELFCLASS64\n");
+		break;
+	default:
+		exit(1);
+	}
+	switch (ei[EI_DATA]) {
+	case ELFDATA2LSB:
+		printf("#define KERNEL_ELFDATA ELFDATA2LSB\n");
+		break;
+	case ELFDATA2MSB:
+		printf("#define KERNEL_ELFDATA ELFDATA2MSB\n");
+		break;
+	default:
+		exit(1);
+	}
+
+	if (sizeof(unsigned long) == 4) {
+		printf("#define HOST_ELFCLASS ELFCLASS32\n");
+	} else if (sizeof(unsigned long) == 8) {
+		printf("#define HOST_ELFCLASS ELFCLASS64\n");
+	}
+
+	endian_test.s = 0x0102;
+	if (memcmp(endian_test.c, "\x01\x02", 2) == 0)
+		printf("#define HOST_ELFDATA ELFDATA2MSB\n");
+	else if (memcmp(endian_test.c, "\x02\x01", 2) == 0)
+		printf("#define HOST_ELFDATA ELFDATA2LSB\n");
+	else
+		exit(1);
+
+	if ((strcmp(argv[1], "v850") == 0) || (strcmp(argv[1], "h8300") == 0)
+	    || (strcmp(argv[1], "blackfin") == 0))
+		printf("#define MODULE_SYMBOL_PREFIX \"_\"\n");
+	else
+		printf("#define MODULE_SYMBOL_PREFIX \"\"\n");
+
+	return 0;
+}
+
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
new file mode 100644
index 0000000000..88084ea771
--- /dev/null
+++ b/scripts/mod/modpost.c
@@ -0,0 +1,1693 @@
+/* Postprocess module symbol versions
+ *
+ * Copyright 2003       Kai Germaschewski
+ * Copyright 2002-2004  Rusty Russell, IBM Corporation
+ * Copyright 2006       Sam Ravnborg
+ * Based in part on module-init-tools/depmod.c,file2alias
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * Usage: modpost vmlinux module1.o module2.o ...
+ */
+
+#include <ctype.h>
+#include "modpost.h"
+#include "../../include/license.h"
+
+/* Are we using CONFIG_MODVERSIONS? */
+int modversions = 0;
+/* Warn about undefined symbols? (do so if we have vmlinux) */
+int have_vmlinux = 0;
+/* Is CONFIG_MODULE_SRCVERSION_ALL set? */
+static int all_versions = 0;
+/* If we are modposting external module set to 1 */
+static int external_module = 0;
+/* Only warn about unresolved symbols */
+static int warn_unresolved = 0;
+/* How a symbol is exported */
+enum export {
+	export_plain,      export_unused,     export_gpl,
+	export_unused_gpl, export_gpl_future, export_unknown
+};
+
+void fatal(const char *fmt, ...)
+{
+	va_list arglist;
+
+	fprintf(stderr, "FATAL: ");
+
+	va_start(arglist, fmt);
+	vfprintf(stderr, fmt, arglist);
+	va_end(arglist);
+
+	exit(1);
+}
+
+void warn(const char *fmt, ...)
+{
+	va_list arglist;
+
+	fprintf(stderr, "WARNING: ");
+
+	va_start(arglist, fmt);
+	vfprintf(stderr, fmt, arglist);
+	va_end(arglist);
+}
+
+void merror(const char *fmt, ...)
+{
+	va_list arglist;
+
+	fprintf(stderr, "ERROR: ");
+
+	va_start(arglist, fmt);
+	vfprintf(stderr, fmt, arglist);
+	va_end(arglist);
+}
+
+static int is_vmlinux(const char *modname)
+{
+	const char *myname;
+
+	if ((myname = strrchr(modname, '/')))
+		myname++;
+	else
+		myname = modname;
+
+	return (strcmp(myname, "vmlinux") == 0) ||
+	       (strcmp(myname, "vmlinux.o") == 0);
+}
+
+void *do_nofail(void *ptr, const char *expr)
+{
+	if (!ptr) {
+		fatal("modpost: Memory allocation failure: %s.\n", expr);
+	}
+	return ptr;
+}
+
+/* A list of all modules we processed */
+
+static struct module *modules;
+
+static struct module *find_module(char *modname)
+{
+	struct module *mod;
+
+	for (mod = modules; mod; mod = mod->next)
+		if (strcmp(mod->name, modname) == 0)
+			break;
+	return mod;
+}
+
+static struct module *new_module(char *modname)
+{
+	struct module *mod;
+	char *p, *s;
+
+	mod = NOFAIL(malloc(sizeof(*mod)));
+	memset(mod, 0, sizeof(*mod));
+	p = NOFAIL(strdup(modname));
+
+	/* strip trailing .o */
+	if ((s = strrchr(p, '.')) != NULL)
+		if (strcmp(s, ".o") == 0)
+			*s = '\0';
+
+	/* add to list */
+	mod->name = p;
+	mod->gpl_compatible = -1;
+	mod->next = modules;
+	modules = mod;
+
+	return mod;
+}
+
+/* A hash of all exported symbols,
+ * struct symbol is also used for lists of unresolved symbols */
+
+#define SYMBOL_HASH_SIZE 1024
+
+struct symbol {
+	struct symbol *next;
+	struct module *module;
+	unsigned int crc;
+	int crc_valid;
+	unsigned int weak:1;
+	unsigned int vmlinux:1;    /* 1 if symbol is defined in vmlinux */
+	unsigned int kernel:1;     /* 1 if symbol is from kernel
+				    *  (only for external modules) **/
+	unsigned int preloaded:1;  /* 1 if symbol from Module.symvers */
+	enum export  export;       /* Type of export */
+	char name[0];
+};
+
+static struct symbol *symbolhash[SYMBOL_HASH_SIZE];
+
+/* This is based on the hash agorithm from gdbm, via tdb */
+static inline unsigned int tdb_hash(const char *name)
+{
+	unsigned value;	/* Used to compute the hash value.  */
+	unsigned   i;	/* Used to cycle through random values. */
+
+	/* Set the initial value from the key size. */
+	for (value = 0x238F13AF * strlen(name), i=0; name[i]; i++)
+		value = (value + (((unsigned char *)name)[i] << (i*5 % 24)));
+
+	return (1103515243 * value + 12345);
+}
+
+/**
+ * Allocate a new symbols for use in the hash of exported symbols or
+ * the list of unresolved symbols per module
+ **/
+static struct symbol *alloc_symbol(const char *name, unsigned int weak,
+				   struct symbol *next)
+{
+	struct symbol *s = NOFAIL(malloc(sizeof(*s) + strlen(name) + 1));
+
+	memset(s, 0, sizeof(*s));
+	strcpy(s->name, name);
+	s->weak = weak;
+	s->next = next;
+	return s;
+}
+
+/* For the hash of exported symbols */
+static struct symbol *new_symbol(const char *name, struct module *module,
+				 enum export export)
+{
+	unsigned int hash;
+	struct symbol *new;
+
+	hash = tdb_hash(name) % SYMBOL_HASH_SIZE;
+	new = symbolhash[hash] = alloc_symbol(name, 0, symbolhash[hash]);
+	new->module = module;
+	new->export = export;
+	return new;
+}
+
+static struct symbol *find_symbol(const char *name)
+{
+	struct symbol *s;
+
+	/* For our purposes, .foo matches foo.  PPC64 needs this. */
+	if (name[0] == '.')
+		name++;
+
+	for (s = symbolhash[tdb_hash(name) % SYMBOL_HASH_SIZE]; s; s=s->next) {
+		if (strcmp(s->name, name) == 0)
+			return s;
+	}
+	return NULL;
+}
+
+static struct {
+	const char *str;
+	enum export export;
+} export_list[] = {
+	{ .str = "EXPORT_SYMBOL",            .export = export_plain },
+	{ .str = "EXPORT_UNUSED_SYMBOL",     .export = export_unused },
+	{ .str = "EXPORT_SYMBOL_GPL",        .export = export_gpl },
+	{ .str = "EXPORT_UNUSED_SYMBOL_GPL", .export = export_unused_gpl },
+	{ .str = "EXPORT_SYMBOL_GPL_FUTURE", .export = export_gpl_future },
+	{ .str = "(unknown)",                .export = export_unknown },
+};
+
+
+static const char *export_str(enum export ex)
+{
+	return export_list[ex].str;
+}
+
+static enum export export_no(const char * s)
+{
+	int i;
+	if (!s)
+		return export_unknown;
+	for (i = 0; export_list[i].export != export_unknown; i++) {
+		if (strcmp(export_list[i].str, s) == 0)
+			return export_list[i].export;
+	}
+	return export_unknown;
+}
+
+static enum export export_from_sec(struct elf_info *elf, Elf_Section sec)
+{
+	if (sec == elf->export_sec)
+		return export_plain;
+	else if (sec == elf->export_unused_sec)
+		return export_unused;
+	else if (sec == elf->export_gpl_sec)
+		return export_gpl;
+	else if (sec == elf->export_unused_gpl_sec)
+		return export_unused_gpl;
+	else if (sec == elf->export_gpl_future_sec)
+		return export_gpl_future;
+	else
+		return export_unknown;
+}
+
+/**
+ * Add an exported symbol - it may have already been added without a
+ * CRC, in this case just update the CRC
+ **/
+static struct symbol *sym_add_exported(const char *name, struct module *mod,
+				       enum export export)
+{
+	struct symbol *s = find_symbol(name);
+
+	if (!s) {
+		s = new_symbol(name, mod, export);
+	} else {
+		if (!s->preloaded) {
+			warn("%s: '%s' exported twice. Previous export "
+			     "was in %s%s\n", mod->name, name,
+			     s->module->name,
+			     is_vmlinux(s->module->name) ?"":".ko");
+		}
+	}
+	s->preloaded = 0;
+	s->vmlinux   = is_vmlinux(mod->name);
+	s->kernel    = 0;
+	s->export    = export;
+	return s;
+}
+
+static void sym_update_crc(const char *name, struct module *mod,
+			   unsigned int crc, enum export export)
+{
+	struct symbol *s = find_symbol(name);
+
+	if (!s)
+		s = new_symbol(name, mod, export);
+	s->crc = crc;
+	s->crc_valid = 1;
+}
+
+void *grab_file(const char *filename, unsigned long *size)
+{
+	struct stat st;
+	void *map;
+	int fd;
+
+	fd = open(filename, O_RDONLY);
+	if (fd < 0 || fstat(fd, &st) != 0)
+		return NULL;
+
+	*size = st.st_size;
+	map = mmap(NULL, *size, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);
+	close(fd);
+
+	if (map == MAP_FAILED)
+		return NULL;
+	return map;
+}
+
+/**
+  * Return a copy of the next line in a mmap'ed file.
+  * spaces in the beginning of the line is trimmed away.
+  * Return a pointer to a static buffer.
+  **/
+char* get_next_line(unsigned long *pos, void *file, unsigned long size)
+{
+	static char line[4096];
+	int skip = 1;
+	size_t len = 0;
+	signed char *p = (signed char *)file + *pos;
+	char *s = line;
+
+	for (; *pos < size ; (*pos)++)
+	{
+		if (skip && isspace(*p)) {
+			p++;
+			continue;
+		}
+		skip = 0;
+		if (*p != '\n' && (*pos < size)) {
+			len++;
+			*s++ = *p++;
+			if (len > 4095)
+				break; /* Too long, stop */
+		} else {
+			/* End of string */
+			*s = '\0';
+			return line;
+		}
+	}
+	/* End of buffer */
+	return NULL;
+}
+
+void release_file(void *file, unsigned long size)
+{
+	munmap(file, size);
+}
+
+static int parse_elf(struct elf_info *info, const char *filename)
+{
+	unsigned int i;
+	Elf_Ehdr *hdr;
+	Elf_Shdr *sechdrs;
+	Elf_Sym  *sym;
+
+	hdr = grab_file(filename, &info->size);
+	if (!hdr) {
+		perror(filename);
+		exit(1);
+	}
+	info->hdr = hdr;
+	if (info->size < sizeof(*hdr)) {
+		/* file too small, assume this is an empty .o file */
+		return 0;
+	}
+	/* Is this a valid ELF file? */
+	if ((hdr->e_ident[EI_MAG0] != ELFMAG0) ||
+	    (hdr->e_ident[EI_MAG1] != ELFMAG1) ||
+	    (hdr->e_ident[EI_MAG2] != ELFMAG2) ||
+	    (hdr->e_ident[EI_MAG3] != ELFMAG3)) {
+		/* Not an ELF file - silently ignore it */
+		return 0;
+	}
+	/* Fix endianness in ELF header */
+	hdr->e_shoff    = TO_NATIVE(hdr->e_shoff);
+	hdr->e_shstrndx = TO_NATIVE(hdr->e_shstrndx);
+	hdr->e_shnum    = TO_NATIVE(hdr->e_shnum);
+	hdr->e_machine  = TO_NATIVE(hdr->e_machine);
+	hdr->e_type     = TO_NATIVE(hdr->e_type);
+	sechdrs = (void *)hdr + hdr->e_shoff;
+	info->sechdrs = sechdrs;
+
+	/* Fix endianness in section headers */
+	for (i = 0; i < hdr->e_shnum; i++) {
+		sechdrs[i].sh_type   = TO_NATIVE(sechdrs[i].sh_type);
+		sechdrs[i].sh_offset = TO_NATIVE(sechdrs[i].sh_offset);
+		sechdrs[i].sh_size   = TO_NATIVE(sechdrs[i].sh_size);
+		sechdrs[i].sh_link   = TO_NATIVE(sechdrs[i].sh_link);
+		sechdrs[i].sh_name   = TO_NATIVE(sechdrs[i].sh_name);
+		sechdrs[i].sh_info   = TO_NATIVE(sechdrs[i].sh_info);
+		sechdrs[i].sh_addr   = TO_NATIVE(sechdrs[i].sh_addr);
+	}
+	/* Find symbol table. */
+	for (i = 1; i < hdr->e_shnum; i++) {
+		const char *secstrings
+			= (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
+		const char *secname;
+
+		if (sechdrs[i].sh_offset > info->size) {
+			fatal("%s is truncated. sechdrs[i].sh_offset=%u > sizeof(*hrd)=%ul\n", filename, (unsigned int)sechdrs[i].sh_offset, sizeof(*hdr));
+			return 0;
+		}
+		secname = secstrings + sechdrs[i].sh_name;
+		if (strcmp(secname, ".modinfo") == 0) {
+			info->modinfo = (void *)hdr + sechdrs[i].sh_offset;
+			info->modinfo_len = sechdrs[i].sh_size;
+		} else if (strcmp(secname, "__ksymtab") == 0)
+			info->export_sec = i;
+		else if (strcmp(secname, "__ksymtab_unused") == 0)
+			info->export_unused_sec = i;
+		else if (strcmp(secname, "__ksymtab_gpl") == 0)
+			info->export_gpl_sec = i;
+		else if (strcmp(secname, "__ksymtab_unused_gpl") == 0)
+			info->export_unused_gpl_sec = i;
+		else if (strcmp(secname, "__ksymtab_gpl_future") == 0)
+			info->export_gpl_future_sec = i;
+
+		if (sechdrs[i].sh_type != SHT_SYMTAB)
+			continue;
+
+		info->symtab_start = (void *)hdr + sechdrs[i].sh_offset;
+		info->symtab_stop  = (void *)hdr + sechdrs[i].sh_offset
+			                         + sechdrs[i].sh_size;
+		info->strtab       = (void *)hdr +
+			             sechdrs[sechdrs[i].sh_link].sh_offset;
+	}
+	if (!info->symtab_start) {
+		fatal("%s has no symtab?\n", filename);
+	}
+	/* Fix endianness in symbols */
+	for (sym = info->symtab_start; sym < info->symtab_stop; sym++) {
+		sym->st_shndx = TO_NATIVE(sym->st_shndx);
+		sym->st_name  = TO_NATIVE(sym->st_name);
+		sym->st_value = TO_NATIVE(sym->st_value);
+		sym->st_size  = TO_NATIVE(sym->st_size);
+	}
+	return 1;
+}
+
+static void parse_elf_finish(struct elf_info *info)
+{
+	release_file(info->hdr, info->size);
+}
+
+#define CRC_PFX     MODULE_SYMBOL_PREFIX "__crc_"
+#define KSYMTAB_PFX MODULE_SYMBOL_PREFIX "__ksymtab_"
+
+static void handle_modversions(struct module *mod, struct elf_info *info,
+			       Elf_Sym *sym, const char *symname)
+{
+	unsigned int crc;
+	enum export export = export_from_sec(info, sym->st_shndx);
+
+	switch (sym->st_shndx) {
+	case SHN_COMMON:
+		warn("\"%s\" [%s] is COMMON symbol\n", symname, mod->name);
+		break;
+	case SHN_ABS:
+		/* CRC'd symbol */
+		if (memcmp(symname, CRC_PFX, strlen(CRC_PFX)) == 0) {
+			crc = (unsigned int) sym->st_value;
+			sym_update_crc(symname + strlen(CRC_PFX), mod, crc,
+					export);
+		}
+		break;
+	case SHN_UNDEF:
+		/* undefined symbol */
+		if (ELF_ST_BIND(sym->st_info) != STB_GLOBAL &&
+		    ELF_ST_BIND(sym->st_info) != STB_WEAK)
+			break;
+		/* ignore global offset table */
+		if (strcmp(symname, "_GLOBAL_OFFSET_TABLE_") == 0)
+			break;
+		/* ignore __this_module, it will be resolved shortly */
+		if (strcmp(symname, MODULE_SYMBOL_PREFIX "__this_module") == 0)
+			break;
+/* cope with newer glibc (2.3.4 or higher) STT_ definition in elf.h */
+#if defined(STT_REGISTER) || defined(STT_SPARC_REGISTER)
+/* add compatibility with older glibc */
+#ifndef STT_SPARC_REGISTER
+#define STT_SPARC_REGISTER STT_REGISTER
+#endif
+		if (info->hdr->e_machine == EM_SPARC ||
+		    info->hdr->e_machine == EM_SPARCV9) {
+			/* Ignore register directives. */
+			if (ELF_ST_TYPE(sym->st_info) == STT_SPARC_REGISTER)
+				break;
+			if (symname[0] == '.') {
+				char *munged = strdup(symname);
+				munged[0] = '_';
+				munged[1] = toupper(munged[1]);
+				symname = munged;
+			}
+		}
+#endif
+
+		if (memcmp(symname, MODULE_SYMBOL_PREFIX,
+			   strlen(MODULE_SYMBOL_PREFIX)) == 0)
+			mod->unres = alloc_symbol(symname +
+						  strlen(MODULE_SYMBOL_PREFIX),
+						  ELF_ST_BIND(sym->st_info) == STB_WEAK,
+						  mod->unres);
+		break;
+	default:
+		/* All exported symbols */
+		if (memcmp(symname, KSYMTAB_PFX, strlen(KSYMTAB_PFX)) == 0) {
+			sym_add_exported(symname + strlen(KSYMTAB_PFX), mod,
+					export);
+		}
+		if (strcmp(symname, MODULE_SYMBOL_PREFIX "init_module") == 0)
+			mod->has_init = 1;
+		if (strcmp(symname, MODULE_SYMBOL_PREFIX "cleanup_module") == 0)
+			mod->has_cleanup = 1;
+		break;
+	}
+}
+
+/**
+ * Parse tag=value strings from .modinfo section
+ **/
+static char *next_string(char *string, unsigned long *secsize)
+{
+	/* Skip non-zero chars */
+	while (string[0]) {
+		string++;
+		if ((*secsize)-- <= 1)
+			return NULL;
+	}
+
+	/* Skip any zero padding. */
+	while (!string[0]) {
+		string++;
+		if ((*secsize)-- <= 1)
+			return NULL;
+	}
+	return string;
+}
+
+static char *get_next_modinfo(void *modinfo, unsigned long modinfo_len,
+			      const char *tag, char *info)
+{
+	char *p;
+	unsigned int taglen = strlen(tag);
+	unsigned long size = modinfo_len;
+
+	if (info) {
+		size -= info - (char *)modinfo;
+		modinfo = next_string(info, &size);
+	}
+
+	for (p = modinfo; p; p = next_string(p, &size)) {
+		if (strncmp(p, tag, taglen) == 0 && p[taglen] == '=')
+			return p + taglen + 1;
+	}
+	return NULL;
+}
+
+static char *get_modinfo(void *modinfo, unsigned long modinfo_len,
+			 const char *tag)
+
+{
+	return get_next_modinfo(modinfo, modinfo_len, tag, NULL);
+}
+
+/**
+ * Test if string s ends in string sub
+ * return 0 if match
+ **/
+static int strrcmp(const char *s, const char *sub)
+{
+        int slen, sublen;
+
+	if (!s || !sub)
+		return 1;
+
+	slen = strlen(s);
+        sublen = strlen(sub);
+
+	if ((slen == 0) || (sublen == 0))
+		return 1;
+
+        if (sublen > slen)
+                return 1;
+
+        return memcmp(s + slen - sublen, sub, sublen);
+}
+
+/**
+ * Whitelist to allow certain references to pass with no warning.
+ *
+ * Pattern 0:
+ *   Do not warn if funtion/data are marked with __init_refok/__initdata_refok.
+ *   The pattern is identified by:
+ *   fromsec = .text.init.refok | .data.init.refok
+ *
+ * Pattern 1:
+ *   If a module parameter is declared __initdata and permissions=0
+ *   then this is legal despite the warning generated.
+ *   We cannot see value of permissions here, so just ignore
+ *   this pattern.
+ *   The pattern is identified by:
+ *   tosec   = .init.data
+ *   fromsec = .data*
+ *   atsym   =__param*
+ *
+ * Pattern 2:
+ *   Many drivers utilise a *driver container with references to
+ *   add, remove, probe functions etc.
+ *   These functions may often be marked __init and we do not want to
+ *   warn here.
+ *   the pattern is identified by:
+ *   tosec   = .init.text | .exit.text | .init.data
+ *   fromsec = .data | .data.rel | .data.rel.*
+ *   atsym = *driver, *_template, *_sht, *_ops, *_probe, *probe_one, *_console, *_timer
+ *
+ * Pattern 3:
+ *   Whitelist all refereces from .text.head to .init.data
+ *   Whitelist all refereces from .text.head to .init.text
+ *
+ * Pattern 4:
+ *   Some symbols belong to init section but still it is ok to reference
+ *   these from non-init sections as these symbols don't have any memory
+ *   allocated for them and symbol address and value are same. So even
+ *   if init section is freed, its ok to reference those symbols.
+ *   For ex. symbols marking the init section boundaries.
+ *   This pattern is identified by
+ *   refsymname = __init_begin, _sinittext, _einittext
+ *
+ **/
+static int secref_whitelist(const char *modname, const char *tosec,
+			    const char *fromsec, const char *atsym,
+			    const char *refsymname)
+{
+	int f1 = 1, f2 = 1;
+	const char **s;
+	const char *pat2sym[] = {
+		"driver",
+		"_template", /* scsi uses *_template a lot */
+		"_timer",    /* arm uses ops structures named _timer a lot */
+		"_sht",      /* scsi also used *_sht to some extent */
+		"_ops",
+		"_probe",
+		"_probe_one",
+		"_console",
+		NULL
+	};
+
+	const char *pat3refsym[] = {
+		"__init_begin",
+		"_sinittext",
+		"_einittext",
+		NULL
+	};
+
+	/* Check for pattern 0 */
+	if ((strcmp(fromsec, ".text.init.refok") == 0) ||
+	    (strcmp(fromsec, ".data.init.refok") == 0))
+		return 1;
+
+	/* Check for pattern 1 */
+	if (strcmp(tosec, ".init.data") != 0)
+		f1 = 0;
+	if (strncmp(fromsec, ".data", strlen(".data")) != 0)
+		f1 = 0;
+	if (strncmp(atsym, "__param", strlen("__param")) != 0)
+		f1 = 0;
+
+	if (f1)
+		return f1;
+
+	/* Check for pattern 2 */
+	if ((strcmp(tosec, ".init.text") != 0) &&
+	    (strcmp(tosec, ".exit.text") != 0) &&
+	    (strcmp(tosec, ".init.data") != 0))
+		f2 = 0;
+	if ((strcmp(fromsec, ".data") != 0) &&
+	    (strcmp(fromsec, ".data.rel") != 0) &&
+	    (strncmp(fromsec, ".data.rel.", strlen(".data.rel.")) != 0))
+		f2 = 0;
+
+	for (s = pat2sym; *s; s++)
+		if (strrcmp(atsym, *s) == 0)
+			f1 = 1;
+	if (f1 && f2)
+		return 1;
+
+	/* Check for pattern 3 */
+	if ((strcmp(fromsec, ".text.head") == 0) &&
+		((strcmp(tosec, ".init.data") == 0) ||
+		(strcmp(tosec, ".init.text") == 0)))
+	return 1;
+
+	/* Check for pattern 4 */
+	for (s = pat3refsym; *s; s++)
+		if (strcmp(refsymname, *s) == 0)
+			return 1;
+
+	return 0;
+}
+
+/**
+ * Find symbol based on relocation record info.
+ * In some cases the symbol supplied is a valid symbol so
+ * return refsym. If st_name != 0 we assume this is a valid symbol.
+ * In other cases the symbol needs to be looked up in the symbol table
+ * based on section and address.
+ *  **/
+static Elf_Sym *find_elf_symbol(struct elf_info *elf, Elf_Addr addr,
+				Elf_Sym *relsym)
+{
+	Elf_Sym *sym;
+
+	if (relsym->st_name != 0)
+		return relsym;
+	for (sym = elf->symtab_start; sym < elf->symtab_stop; sym++) {
+		if (sym->st_shndx != relsym->st_shndx)
+			continue;
+		if (ELF_ST_TYPE(sym->st_info) == STT_SECTION)
+			continue;
+		if (sym->st_value == addr)
+			return sym;
+	}
+	return NULL;
+}
+
+static inline int is_arm_mapping_symbol(const char *str)
+{
+	return str[0] == '$' && strchr("atd", str[1])
+	       && (str[2] == '\0' || str[2] == '.');
+}
+
+/*
+ * If there's no name there, ignore it; likewise, ignore it if it's
+ * one of the magic symbols emitted used by current ARM tools.
+ *
+ * Otherwise if find_symbols_between() returns those symbols, they'll
+ * fail the whitelist tests and cause lots of false alarms ... fixable
+ * only by merging __exit and __init sections into __text, bloating
+ * the kernel (which is especially evil on embedded platforms).
+ */
+static inline int is_valid_name(struct elf_info *elf, Elf_Sym *sym)
+{
+	const char *name = elf->strtab + sym->st_name;
+
+	if (!name || !strlen(name))
+		return 0;
+	return !is_arm_mapping_symbol(name);
+}
+
+/*
+ * Find symbols before or equal addr and after addr - in the section sec.
+ * If we find two symbols with equal offset prefer one with a valid name.
+ * The ELF format may have a better way to detect what type of symbol
+ * it is, but this works for now.
+ **/
+static void find_symbols_between(struct elf_info *elf, Elf_Addr addr,
+				 const char *sec,
+			         Elf_Sym **before, Elf_Sym **after)
+{
+	Elf_Sym *sym;
+	Elf_Ehdr *hdr = elf->hdr;
+	Elf_Addr beforediff = ~0;
+	Elf_Addr afterdiff = ~0;
+	const char *secstrings = (void *)hdr +
+				 elf->sechdrs[hdr->e_shstrndx].sh_offset;
+
+	*before = NULL;
+	*after = NULL;
+
+	for (sym = elf->symtab_start; sym < elf->symtab_stop; sym++) {
+		const char *symsec;
+
+		if (sym->st_shndx >= SHN_LORESERVE)
+			continue;
+		symsec = secstrings + elf->sechdrs[sym->st_shndx].sh_name;
+		if (strcmp(symsec, sec) != 0)
+			continue;
+		if (!is_valid_name(elf, sym))
+			continue;
+		if (sym->st_value <= addr) {
+			if ((addr - sym->st_value) < beforediff) {
+				beforediff = addr - sym->st_value;
+				*before = sym;
+			}
+			else if ((addr - sym->st_value) == beforediff) {
+				*before = sym;
+			}
+		}
+		else
+		{
+			if ((sym->st_value - addr) < afterdiff) {
+				afterdiff = sym->st_value - addr;
+				*after = sym;
+			}
+			else if ((sym->st_value - addr) == afterdiff) {
+				*after = sym;
+			}
+		}
+	}
+}
+
+/**
+ * Print a warning about a section mismatch.
+ * Try to find symbols near it so user can find it.
+ * Check whitelist before warning - it may be a false positive.
+ **/
+static void warn_sec_mismatch(const char *modname, const char *fromsec,
+			      struct elf_info *elf, Elf_Sym *sym, Elf_Rela r)
+{
+	const char *refsymname = "";
+	Elf_Sym *before, *after;
+	Elf_Sym *refsym;
+	Elf_Ehdr *hdr = elf->hdr;
+	Elf_Shdr *sechdrs = elf->sechdrs;
+	const char *secstrings = (void *)hdr +
+				 sechdrs[hdr->e_shstrndx].sh_offset;
+	const char *secname = secstrings + sechdrs[sym->st_shndx].sh_name;
+
+	find_symbols_between(elf, r.r_offset, fromsec, &before, &after);
+
+	refsym = find_elf_symbol(elf, r.r_addend, sym);
+	if (refsym && strlen(elf->strtab + refsym->st_name))
+		refsymname = elf->strtab + refsym->st_name;
+
+	/* check whitelist - we may ignore it */
+	if (before &&
+	    secref_whitelist(modname, secname, fromsec,
+			     elf->strtab + before->st_name, refsymname))
+		return;
+
+	if (before && after) {
+		warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s "
+		     "(between '%s' and '%s')\n",
+		     modname, fromsec, (unsigned long long)r.r_offset,
+		     secname, refsymname,
+		     elf->strtab + before->st_name,
+		     elf->strtab + after->st_name);
+	} else if (before) {
+		warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s "
+		     "(after '%s')\n",
+		     modname, fromsec, (unsigned long long)r.r_offset,
+		     secname, refsymname,
+		     elf->strtab + before->st_name);
+	} else if (after) {
+		warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s "
+		     "before '%s' (at offset -0x%llx)\n",
+		     modname, fromsec, (unsigned long long)r.r_offset,
+		     secname, refsymname,
+		     elf->strtab + after->st_name);
+	} else {
+		warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s\n",
+		     modname, fromsec, (unsigned long long)r.r_offset,
+		     secname, refsymname);
+	}
+}
+
+static unsigned int *reloc_location(struct elf_info *elf,
+					   int rsection, Elf_Rela *r)
+{
+	Elf_Shdr *sechdrs = elf->sechdrs;
+	int section = sechdrs[rsection].sh_info;
+
+	return (void *)elf->hdr + sechdrs[section].sh_offset +
+		(r->r_offset - sechdrs[section].sh_addr);
+}
+
+static int addend_386_rel(struct elf_info *elf, int rsection, Elf_Rela *r)
+{
+	unsigned int r_typ = ELF_R_TYPE(r->r_info);
+	unsigned int *location = reloc_location(elf, rsection, r);
+
+	switch (r_typ) {
+	case R_386_32:
+		r->r_addend = TO_NATIVE(*location);
+		break;
+	case R_386_PC32:
+		r->r_addend = TO_NATIVE(*location) + 4;
+		/* For CONFIG_RELOCATABLE=y */
+		if (elf->hdr->e_type == ET_EXEC)
+			r->r_addend += r->r_offset;
+		break;
+	}
+	return 0;
+}
+
+static int addend_arm_rel(struct elf_info *elf, int rsection, Elf_Rela *r)
+{
+	unsigned int r_typ = ELF_R_TYPE(r->r_info);
+
+	switch (r_typ) {
+	case R_ARM_ABS32:
+		/* From ARM ABI: (S + A) | T */
+		r->r_addend = (int)(long)(elf->symtab_start + ELF_R_SYM(r->r_info));
+		break;
+	case R_ARM_PC24:
+		/* From ARM ABI: ((S + A) | T) - P */
+		r->r_addend = (int)(long)(elf->hdr + elf->sechdrs[rsection].sh_offset +
+		                          (r->r_offset - elf->sechdrs[rsection].sh_addr));
+		break;
+	default:
+		return 1;
+	}
+	return 0;
+}
+
+static int addend_mips_rel(struct elf_info *elf, int rsection, Elf_Rela *r)
+{
+	unsigned int r_typ = ELF_R_TYPE(r->r_info);
+	unsigned int *location = reloc_location(elf, rsection, r);
+	unsigned int inst;
+
+	if (r_typ == R_MIPS_HI16)
+		return 1;	/* skip this */
+	inst = TO_NATIVE(*location);
+	switch (r_typ) {
+	case R_MIPS_LO16:
+		r->r_addend = inst & 0xffff;
+		break;
+	case R_MIPS_26:
+		r->r_addend = (inst & 0x03ffffff) << 2;
+		break;
+	case R_MIPS_32:
+		r->r_addend = inst;
+		break;
+	}
+	return 0;
+}
+
+/**
+ * A module includes a number of sections that are discarded
+ * either when loaded or when used as built-in.
+ * For loaded modules all functions marked __init and all data
+ * marked __initdata will be discarded when the module has been intialized.
+ * Likewise for modules used built-in the sections marked __exit
+ * are discarded because __exit marked function are supposed to be called
+ * only when a moduel is unloaded which never happes for built-in modules.
+ * The check_sec_ref() function traverses all relocation records
+ * to find all references to a section that reference a section that will
+ * be discarded and warns about it.
+ **/
+static void check_sec_ref(struct module *mod, const char *modname,
+			  struct elf_info *elf,
+			  int section(const char*),
+			  int section_ref_ok(const char *))
+{
+	int i;
+	Elf_Sym  *sym;
+	Elf_Ehdr *hdr = elf->hdr;
+	Elf_Shdr *sechdrs = elf->sechdrs;
+	const char *secstrings = (void *)hdr +
+				 sechdrs[hdr->e_shstrndx].sh_offset;
+
+	/* Walk through all sections */
+	for (i = 0; i < hdr->e_shnum; i++) {
+		const char *name = secstrings + sechdrs[i].sh_name;
+		const char *secname;
+		Elf_Rela r;
+		unsigned int r_sym;
+		/* We want to process only relocation sections and not .init */
+		if (sechdrs[i].sh_type == SHT_RELA) {
+			Elf_Rela *rela;
+			Elf_Rela *start = (void *)hdr + sechdrs[i].sh_offset;
+			Elf_Rela *stop  = (void*)start + sechdrs[i].sh_size;
+			name += strlen(".rela");
+			if (section_ref_ok(name))
+				continue;
+
+			for (rela = start; rela < stop; rela++) {
+				r.r_offset = TO_NATIVE(rela->r_offset);
+#if KERNEL_ELFCLASS == ELFCLASS64
+				if (hdr->e_machine == EM_MIPS) {
+					unsigned int r_typ;
+					r_sym = ELF64_MIPS_R_SYM(rela->r_info);
+					r_sym = TO_NATIVE(r_sym);
+					r_typ = ELF64_MIPS_R_TYPE(rela->r_info);
+					r.r_info = ELF64_R_INFO(r_sym, r_typ);
+				} else {
+					r.r_info = TO_NATIVE(rela->r_info);
+					r_sym = ELF_R_SYM(r.r_info);
+				}
+#else
+				r.r_info = TO_NATIVE(rela->r_info);
+				r_sym = ELF_R_SYM(r.r_info);
+#endif
+				r.r_addend = TO_NATIVE(rela->r_addend);
+				sym = elf->symtab_start + r_sym;
+				/* Skip special sections */
+				if (sym->st_shndx >= SHN_LORESERVE)
+					continue;
+
+				secname = secstrings +
+					sechdrs[sym->st_shndx].sh_name;
+				if (section(secname))
+					warn_sec_mismatch(modname, name,
+							  elf, sym, r);
+			}
+		} else if (sechdrs[i].sh_type == SHT_REL) {
+			Elf_Rel *rel;
+			Elf_Rel *start = (void *)hdr + sechdrs[i].sh_offset;
+			Elf_Rel *stop  = (void*)start + sechdrs[i].sh_size;
+			name += strlen(".rel");
+			if (section_ref_ok(name))
+				continue;
+
+			for (rel = start; rel < stop; rel++) {
+				r.r_offset = TO_NATIVE(rel->r_offset);
+#if KERNEL_ELFCLASS == ELFCLASS64
+				if (hdr->e_machine == EM_MIPS) {
+					unsigned int r_typ;
+					r_sym = ELF64_MIPS_R_SYM(rel->r_info);
+					r_sym = TO_NATIVE(r_sym);
+					r_typ = ELF64_MIPS_R_TYPE(rel->r_info);
+					r.r_info = ELF64_R_INFO(r_sym, r_typ);
+				} else {
+					r.r_info = TO_NATIVE(rel->r_info);
+					r_sym = ELF_R_SYM(r.r_info);
+				}
+#else
+				r.r_info = TO_NATIVE(rel->r_info);
+				r_sym = ELF_R_SYM(r.r_info);
+#endif
+				r.r_addend = 0;
+				switch (hdr->e_machine) {
+				case EM_386:
+					if (addend_386_rel(elf, i, &r))
+						continue;
+					break;
+				case EM_ARM:
+					if(addend_arm_rel(elf, i, &r))
+						continue;
+					break;
+				case EM_MIPS:
+					if (addend_mips_rel(elf, i, &r))
+						continue;
+					break;
+				}
+				sym = elf->symtab_start + r_sym;
+				/* Skip special sections */
+				if (sym->st_shndx >= SHN_LORESERVE)
+					continue;
+
+				secname = secstrings +
+					sechdrs[sym->st_shndx].sh_name;
+				if (section(secname))
+					warn_sec_mismatch(modname, name,
+							  elf, sym, r);
+			}
+		}
+	}
+}
+
+/*
+ * Identify sections from which references to either a
+ * .init or a .exit section is OK.
+ *
+ * [OPD] Keith Ownes <kaos@sgi.com> commented:
+ * For our future {in}sanity, add a comment that this is the ppc .opd
+ * section, not the ia64 .opd section.
+ * ia64 .opd should not point to discarded sections.
+ * [.rodata] like for .init.text we ignore .rodata references -same reason
+ */
+static int initexit_section_ref_ok(const char *name)
+{
+	const char **s;
+	/* Absolute section names */
+	const char *namelist1[] = {
+		"__bug_table",		/* used by powerpc for BUG() */
+		"__ex_table",
+		".altinstructions",
+		".cranges",		/* used by sh64 */
+		".fixup",
+		".machvec",		/* ia64 + powerpc uses these */
+		".machine.desc",
+		".opd",			/* See comment [OPD] */
+		".parainstructions",
+		".pdr",
+		".plt",			/* seen on ARCH=um build on x86_64. Harmless */
+		".smp_locks",
+		".stab",
+		".m68k_fixup",
+		NULL
+	};
+	/* Start of section names */
+	const char *namelist2[] = {
+		".debug",
+		".eh_frame",
+		".note",		/* ignore ELF notes - may contain anything */
+		".got",			/* powerpc - global offset table */
+		".toc",			/* powerpc - table of contents */
+		NULL
+	};
+	/* part of section name */
+	const char *namelist3 [] = {
+		".unwind",  /* Sample: IA_64.unwind.exit.text */
+		NULL
+	};
+
+	for (s = namelist1; *s; s++)
+		if (strcmp(*s, name) == 0)
+			return 1;
+	for (s = namelist2; *s; s++)
+		if (strncmp(*s, name, strlen(*s)) == 0)
+			return 1;
+	for (s = namelist3; *s; s++)
+		if (strstr(name, *s) != NULL)
+			return 1;
+	return 0;
+}
+
+/**
+ * Functions used only during module init is marked __init and is stored in
+ * a .init.text section. Likewise data is marked __initdata and stored in
+ * a .init.data section.
+ * If this section is one of these sections return 1
+ * See include/linux/init.h for the details
+ **/
+static int init_section(const char *name)
+{
+	if (strcmp(name, ".init") == 0)
+		return 1;
+	if (strncmp(name, ".init.", strlen(".init.")) == 0)
+		return 1;
+	return 0;
+}
+
+/*
+ * Identify sections from which references to a .init section is OK.
+ *
+ * Unfortunately references to read only data that referenced .init
+ * sections had to be excluded. Almost all of these are false
+ * positives, they are created by gcc. The downside of excluding rodata
+ * is that there really are some user references from rodata to
+ * init code, e.g. drivers/video/vgacon.c:
+ *
+ * const struct consw vga_con = {
+ *        con_startup:            vgacon_startup,
+ *
+ * where vgacon_startup is __init.  If you want to wade through the false
+ * positives, take out the check for rodata.
+ */
+static int init_section_ref_ok(const char *name)
+{
+	const char **s;
+	/* Absolute section names */
+	const char *namelist1[] = {
+		"__dbe_table",		/* MIPS generate these */
+		"__ftr_fixup",		/* powerpc cpu feature fixup */
+		"__fw_ftr_fixup",	/* powerpc firmware feature fixup */
+		"__param",
+		".data.rel.ro",		/* used by parisc64 */
+		".init",
+		".text.lock",
+		NULL
+	};
+	/* Start of section names */
+	const char *namelist2[] = {
+		".init.",
+		".pci_fixup",
+		".rodata",
+		NULL
+	};
+
+	if (initexit_section_ref_ok(name))
+		return 1;
+
+	for (s = namelist1; *s; s++)
+		if (strcmp(*s, name) == 0)
+			return 1;
+	for (s = namelist2; *s; s++)
+		if (strncmp(*s, name, strlen(*s)) == 0)
+			return 1;
+
+	/* If section name ends with ".init" we allow references
+	 * as is the case with .initcallN.init, .early_param.init, .taglist.init etc
+	 */
+	if (strrcmp(name, ".init") == 0)
+		return 1;
+	return 0;
+}
+
+/*
+ * Functions used only during module exit is marked __exit and is stored in
+ * a .exit.text section. Likewise data is marked __exitdata and stored in
+ * a .exit.data section.
+ * If this section is one of these sections return 1
+ * See include/linux/init.h for the details
+ **/
+static int exit_section(const char *name)
+{
+	if (strcmp(name, ".exit.text") == 0)
+		return 1;
+	if (strcmp(name, ".exit.data") == 0)
+		return 1;
+	return 0;
+
+}
+
+/*
+ * Identify sections from which references to a .exit section is OK.
+ */
+static int exit_section_ref_ok(const char *name)
+{
+	const char **s;
+	/* Absolute section names */
+	const char *namelist1[] = {
+		".exit.data",
+		".exit.text",
+		".exitcall.exit",
+		".rodata",
+		NULL
+	};
+
+	if (initexit_section_ref_ok(name))
+		return 1;
+
+	for (s = namelist1; *s; s++)
+		if (strcmp(*s, name) == 0)
+			return 1;
+	return 0;
+}
+
+static void read_symbols(char *modname)
+{
+	const char *symname;
+	char *version;
+	char *license;
+	struct module *mod;
+	struct elf_info info = { };
+	Elf_Sym *sym;
+
+	if (!parse_elf(&info, modname))
+		return;
+
+	mod = new_module(modname);
+
+	/* When there's no vmlinux, don't print warnings about
+	 * unresolved symbols (since there'll be too many ;) */
+	if (is_vmlinux(modname)) {
+		have_vmlinux = 1;
+		mod->skip = 1;
+	}
+
+	license = get_modinfo(info.modinfo, info.modinfo_len, "license");
+	while (license) {
+		if (license_is_gpl_compatible(license))
+			mod->gpl_compatible = 1;
+		else {
+			mod->gpl_compatible = 0;
+			break;
+		}
+		license = get_next_modinfo(info.modinfo, info.modinfo_len,
+					   "license", license);
+	}
+#if 0
+	for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {
+		symname = info.strtab + sym->st_name;
+
+		handle_modversions(mod, &info, sym, symname);
+		handle_moddevtable(mod, &info, sym, symname);
+	}
+#endif
+	check_sec_ref(mod, modname, &info, init_section, init_section_ref_ok);
+	check_sec_ref(mod, modname, &info, exit_section, exit_section_ref_ok);
+
+	version = get_modinfo(info.modinfo, info.modinfo_len, "version");
+	if (version)
+		maybe_frob_rcs_version(modname, version, info.modinfo,
+				       version - (char *)info.hdr);
+	if (version || (all_versions && !is_vmlinux(modname)))
+		get_src_version(modname, mod->srcversion,
+				sizeof(mod->srcversion)-1);
+
+	parse_elf_finish(&info);
+
+	/* Our trick to get versioning for struct_module - it's
+	 * never passed as an argument to an exported function, so
+	 * the automatic versioning doesn't pick it up, but it's really
+	 * important anyhow */
+	if (modversions)
+		mod->unres = alloc_symbol("struct_module", 0, mod->unres);
+}
+
+#define SZ 500
+
+/* We first write the generated file into memory using the
+ * following helper, then compare to the file on disk and
+ * only update the later if anything changed */
+
+void __attribute__((format(printf, 2, 3))) buf_printf(struct buffer *buf,
+						      const char *fmt, ...)
+{
+	char tmp[SZ];
+	int len;
+	va_list ap;
+
+	va_start(ap, fmt);
+	len = vsnprintf(tmp, SZ, fmt, ap);
+	buf_write(buf, tmp, len);
+	va_end(ap);
+}
+
+void buf_write(struct buffer *buf, const char *s, int len)
+{
+	if (buf->size - buf->pos < len) {
+		buf->size += len + SZ;
+		buf->p = realloc(buf->p, buf->size);
+	}
+	strncpy(buf->p + buf->pos, s, len);
+	buf->pos += len;
+}
+
+static void check_for_gpl_usage(enum export exp, const char *m, const char *s)
+{
+	const char *e = is_vmlinux(m) ?"":".ko";
+
+	switch (exp) {
+	case export_gpl:
+		fatal("modpost: GPL-incompatible module %s%s "
+		      "uses GPL-only symbol '%s'\n", m, e, s);
+		break;
+	case export_unused_gpl:
+		fatal("modpost: GPL-incompatible module %s%s "
+		      "uses GPL-only symbol marked UNUSED '%s'\n", m, e, s);
+		break;
+	case export_gpl_future:
+		warn("modpost: GPL-incompatible module %s%s "
+		      "uses future GPL-only symbol '%s'\n", m, e, s);
+		break;
+	case export_plain:
+	case export_unused:
+	case export_unknown:
+		/* ignore */
+		break;
+	}
+}
+
+static void check_for_unused(enum export exp, const char* m, const char* s)
+{
+	const char *e = is_vmlinux(m) ?"":".ko";
+
+	switch (exp) {
+	case export_unused:
+	case export_unused_gpl:
+		warn("modpost: module %s%s "
+		      "uses symbol '%s' marked UNUSED\n", m, e, s);
+		break;
+	default:
+		/* ignore */
+		break;
+	}
+}
+
+static void check_exports(struct module *mod)
+{
+	struct symbol *s, *exp;
+
+	for (s = mod->unres; s; s = s->next) {
+		const char *basename;
+		exp = find_symbol(s->name);
+		if (!exp || exp->module == mod)
+			continue;
+		basename = strrchr(mod->name, '/');
+		if (basename)
+			basename++;
+		else
+			basename = mod->name;
+		if (!mod->gpl_compatible)
+			check_for_gpl_usage(exp->export, basename, exp->name);
+		check_for_unused(exp->export, basename, exp->name);
+        }
+}
+
+/**
+ * Header for the generated file
+ **/
+static void add_header(struct buffer *b, struct module *mod)
+{
+	buf_printf(b, "#include <module.h>\n");
+//	buf_printf(b, "#include <linux/vermagic.h>\n");
+	buf_printf(b, "#include <compiler.h>\n");
+	buf_printf(b, "\n");
+//	buf_printf(b, "MODULE_INFO(vermagic, VERMAGIC_STRING);\n");
+	buf_printf(b, "\n");
+	buf_printf(b, "struct module __this_module\n");
+	buf_printf(b, "__attribute__((section(\".gnu.linkonce.this_module\"))) = {\n");
+	buf_printf(b, " .name = KBUILD_MODNAME,\n");
+	if (mod->has_init)
+		buf_printf(b, " .init = init_module,\n");
+	if (mod->has_cleanup)
+		buf_printf(b, "#ifdef CONFIG_MODULE_UNLOAD\n"
+			      " .exit = cleanup_module,\n"
+			      "#endif\n");
+//	buf_printf(b, " .arch = MODULE_ARCH_INIT,\n");
+	buf_printf(b, "};\n");
+}
+
+/**
+ * Record CRCs for unresolved symbols
+ **/
+static int add_versions(struct buffer *b, struct module *mod)
+{
+	struct symbol *s, *exp;
+	int err = 0;
+
+	for (s = mod->unres; s; s = s->next) {
+		exp = find_symbol(s->name);
+		if (!exp || exp->module == mod) {
+			if (have_vmlinux && !s->weak) {
+				if (warn_unresolved) {
+					warn("\"%s\" [%s.ko] undefined!\n",
+					     s->name, mod->name);
+				} else {
+					merror("\"%s\" [%s.ko] undefined!\n",
+					          s->name, mod->name);
+					err = 1;
+				}
+			}
+			continue;
+		}
+		s->module = exp->module;
+		s->crc_valid = exp->crc_valid;
+		s->crc = exp->crc;
+	}
+
+	if (!modversions)
+		return err;
+
+	buf_printf(b, "\n");
+	buf_printf(b, "static const struct modversion_info ____versions[]\n");
+	buf_printf(b, "__used\n");
+	buf_printf(b, "__attribute__((section(\"__versions\"))) = {\n");
+
+	for (s = mod->unres; s; s = s->next) {
+		if (!s->module) {
+			continue;
+		}
+		if (!s->crc_valid) {
+			warn("\"%s\" [%s.ko] has no CRC!\n",
+				s->name, mod->name);
+			continue;
+		}
+		buf_printf(b, "\t{ %#8x, \"%s\" },\n", s->crc, s->name);
+	}
+
+	buf_printf(b, "};\n");
+
+	return err;
+}
+
+static void add_depends(struct buffer *b, struct module *mod,
+			struct module *modules)
+{
+	struct symbol *s;
+	struct module *m;
+	int first = 1;
+
+	for (m = modules; m; m = m->next) {
+		m->seen = is_vmlinux(m->name);
+	}
+
+	buf_printf(b, "\n");
+	buf_printf(b, "static const char __module_depends[]\n");
+	buf_printf(b, "__used\n");
+	buf_printf(b, "__attribute__((section(\".modinfo\"))) =\n");
+	buf_printf(b, "\"depends=");
+	for (s = mod->unres; s; s = s->next) {
+		const char *p;
+		if (!s->module)
+			continue;
+
+		if (s->module->seen)
+			continue;
+
+		s->module->seen = 1;
+		if ((p = strrchr(s->module->name, '/')) != NULL)
+			p++;
+		else
+			p = s->module->name;
+		buf_printf(b, "%s%s", first ? "" : ",", p);
+		first = 0;
+	}
+	buf_printf(b, "\";\n");
+}
+
+static void add_srcversion(struct buffer *b, struct module *mod)
+{
+	if (mod->srcversion[0]) {
+		buf_printf(b, "\n");
+		buf_printf(b, "MODULE_INFO(srcversion, \"%s\");\n",
+			   mod->srcversion);
+	}
+}
+
+static void write_if_changed(struct buffer *b, const char *fname)
+{
+	char *tmp;
+	FILE *file;
+	struct stat st;
+
+	file = fopen(fname, "r");
+	if (!file)
+		goto write;
+
+	if (fstat(fileno(file), &st) < 0)
+		goto close_write;
+
+	if (st.st_size != b->pos)
+		goto close_write;
+
+	tmp = NOFAIL(malloc(b->pos));
+	if (fread(tmp, 1, b->pos, file) != b->pos)
+		goto free_write;
+
+	if (memcmp(tmp, b->p, b->pos) != 0)
+		goto free_write;
+
+	free(tmp);
+	fclose(file);
+	return;
+
+ free_write:
+	free(tmp);
+ close_write:
+	fclose(file);
+ write:
+	file = fopen(fname, "w");
+	if (!file) {
+		perror(fname);
+		exit(1);
+	}
+	if (fwrite(b->p, 1, b->pos, file) != b->pos) {
+		perror(fname);
+		exit(1);
+	}
+	fclose(file);
+}
+
+/* parse Module.symvers file. line format:
+ * 0x12345678<tab>symbol<tab>module[[<tab>export]<tab>something]
+ **/
+static void read_dump(const char *fname, unsigned int kernel)
+{
+	unsigned long size, pos = 0;
+	void *file = grab_file(fname, &size);
+	char *line;
+
+        if (!file)
+		/* No symbol versions, silently ignore */
+		return;
+
+	while ((line = get_next_line(&pos, file, size))) {
+		char *symname, *modname, *d, *export, *end;
+		unsigned int crc;
+		struct module *mod;
+		struct symbol *s;
+
+		if (!(symname = strchr(line, '\t')))
+			goto fail;
+		*symname++ = '\0';
+		if (!(modname = strchr(symname, '\t')))
+			goto fail;
+		*modname++ = '\0';
+		if ((export = strchr(modname, '\t')) != NULL)
+			*export++ = '\0';
+		if (export && ((end = strchr(export, '\t')) != NULL))
+			*end = '\0';
+		crc = strtoul(line, &d, 16);
+		if (*symname == '\0' || *modname == '\0' || *d != '\0')
+			goto fail;
+
+		if (!(mod = find_module(modname))) {
+			if (is_vmlinux(modname)) {
+				have_vmlinux = 1;
+			}
+			mod = new_module(NOFAIL(strdup(modname)));
+			mod->skip = 1;
+		}
+		s = sym_add_exported(symname, mod, export_no(export));
+		s->kernel    = kernel;
+		s->preloaded = 1;
+		sym_update_crc(symname, mod, crc, export_no(export));
+	}
+	return;
+fail:
+	fatal("parse error in symbol dump file\n");
+}
+
+/* For normal builds always dump all symbols.
+ * For external modules only dump symbols
+ * that are not read from kernel Module.symvers.
+ **/
+static int dump_sym(struct symbol *sym)
+{
+	if (!external_module)
+		return 1;
+	if (sym->vmlinux || sym->kernel)
+		return 0;
+	return 1;
+}
+
+static void write_dump(const char *fname)
+{
+	struct buffer buf = { };
+	struct symbol *symbol;
+	int n;
+
+	for (n = 0; n < SYMBOL_HASH_SIZE ; n++) {
+		symbol = symbolhash[n];
+		while (symbol) {
+			if (dump_sym(symbol))
+				buf_printf(&buf, "0x%08x\t%s\t%s\t%s\n",
+					symbol->crc, symbol->name,
+					symbol->module->name,
+					export_str(symbol->export));
+			symbol = symbol->next;
+		}
+	}
+	write_if_changed(&buf, fname);
+}
+
+int main(int argc, char **argv)
+{
+	struct module *mod;
+	struct buffer buf = { };
+	char fname[SZ];
+	char *kernel_read = NULL, *module_read = NULL;
+	char *dump_write = NULL;
+	int opt;
+	int err;
+
+	while ((opt = getopt(argc, argv, "i:I:mo:aw")) != -1) {
+		switch(opt) {
+			case 'i':
+				kernel_read = optarg;
+				break;
+			case 'I':
+				module_read = optarg;
+				external_module = 1;
+				break;
+			case 'm':
+				modversions = 1;
+				break;
+			case 'o':
+				dump_write = optarg;
+				break;
+			case 'a':
+				all_versions = 1;
+				break;
+			case 'w':
+				warn_unresolved = 1;
+				break;
+			default:
+				exit(1);
+		}
+	}
+
+	if (kernel_read)
+		read_dump(kernel_read, 1);
+	if (module_read)
+		read_dump(module_read, 0);
+
+	while (optind < argc) {
+		read_symbols(argv[optind++]);
+	}
+
+	for (mod = modules; mod; mod = mod->next) {
+		if (mod->skip)
+			continue;
+		check_exports(mod);
+	}
+
+	err = 0;
+
+	for (mod = modules; mod; mod = mod->next) {
+		if (mod->skip)
+			continue;
+
+		buf.pos = 0;
+
+		add_header(&buf, mod);
+		err |= add_versions(&buf, mod);
+		add_depends(&buf, mod, modules);
+//		add_moddevtable(&buf, mod);
+		add_srcversion(&buf, mod);
+
+		sprintf(fname, "%s.mod.c", mod->name);
+		write_if_changed(&buf, fname);
+	}
+
+	if (dump_write)
+		write_dump(dump_write);
+
+	return err;
+}
diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h
new file mode 100644
index 0000000000..4156dd34c5
--- /dev/null
+++ b/scripts/mod/modpost.h
@@ -0,0 +1,151 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <elf.h>
+
+#include "elfconfig.h"
+
+#if KERNEL_ELFCLASS == ELFCLASS32
+
+#define Elf_Ehdr    Elf32_Ehdr
+#define Elf_Shdr    Elf32_Shdr
+#define Elf_Sym     Elf32_Sym
+#define Elf_Addr    Elf32_Addr
+#define Elf_Section Elf32_Section
+#define ELF_ST_BIND ELF32_ST_BIND
+#define ELF_ST_TYPE ELF32_ST_TYPE
+
+#define Elf_Rel     Elf32_Rel
+#define Elf_Rela    Elf32_Rela
+#define ELF_R_SYM   ELF32_R_SYM
+#define ELF_R_TYPE  ELF32_R_TYPE
+#else
+
+#define Elf_Ehdr    Elf64_Ehdr
+#define Elf_Shdr    Elf64_Shdr
+#define Elf_Sym     Elf64_Sym
+#define Elf_Addr    Elf64_Addr
+#define Elf_Section Elf64_Section
+#define ELF_ST_BIND ELF64_ST_BIND
+#define ELF_ST_TYPE ELF64_ST_TYPE
+
+#define Elf_Rel     Elf64_Rel
+#define Elf_Rela    Elf64_Rela
+#define ELF_R_SYM   ELF64_R_SYM
+#define ELF_R_TYPE  ELF64_R_TYPE
+#endif
+
+/* The 64-bit MIPS ELF ABI uses an unusual reloc format. */
+typedef struct
+{
+	Elf32_Word    r_sym;	/* Symbol index */
+	unsigned char r_ssym;	/* Special symbol for 2nd relocation */
+	unsigned char r_type3;	/* 3rd relocation type */
+	unsigned char r_type2;	/* 2nd relocation type */
+	unsigned char r_type1;	/* 1st relocation type */
+} _Elf64_Mips_R_Info;
+
+typedef union
+{
+	Elf64_Xword		r_info_number;
+	_Elf64_Mips_R_Info	r_info_fields;
+} _Elf64_Mips_R_Info_union;
+
+#define ELF64_MIPS_R_SYM(i) \
+  ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_sym)
+
+#define ELF64_MIPS_R_TYPE(i) \
+  ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_type1)
+
+#if KERNEL_ELFDATA != HOST_ELFDATA
+
+static inline void __endian(const void *src, void *dest, unsigned int size)
+{
+	unsigned int i;
+	for (i = 0; i < size; i++)
+		((unsigned char*)dest)[i] = ((unsigned char*)src)[size - i-1];
+}
+
+#define TO_NATIVE(x)						\
+({								\
+	typeof(x) __x;						\
+	__endian(&(x), &(__x), sizeof(__x));			\
+	__x;							\
+})
+
+#else /* endianness matches */
+
+#define TO_NATIVE(x) (x)
+
+#endif
+
+#define NOFAIL(ptr)   do_nofail((ptr), #ptr)
+void *do_nofail(void *ptr, const char *expr);
+
+struct buffer {
+	char *p;
+	int pos;
+	int size;
+};
+
+void __attribute__((format(printf, 2, 3)))
+buf_printf(struct buffer *buf, const char *fmt, ...);
+
+void
+buf_write(struct buffer *buf, const char *s, int len);
+
+struct module {
+	struct module *next;
+	const char *name;
+	int gpl_compatible;
+	struct symbol *unres;
+	int seen;
+	int skip;
+	int has_init;
+	int has_cleanup;
+	struct buffer dev_table_buf;
+	char	     srcversion[25];
+};
+
+struct elf_info {
+	unsigned long size;
+	Elf_Ehdr     *hdr;
+	Elf_Shdr     *sechdrs;
+	Elf_Sym      *symtab_start;
+	Elf_Sym      *symtab_stop;
+	Elf_Section  export_sec;
+	Elf_Section  export_unused_sec;
+	Elf_Section  export_gpl_sec;
+	Elf_Section  export_unused_gpl_sec;
+	Elf_Section  export_gpl_future_sec;
+	const char   *strtab;
+	char	     *modinfo;
+	unsigned int modinfo_len;
+};
+
+/* file2alias.c */
+void handle_moddevtable(struct module *mod, struct elf_info *info,
+			Elf_Sym *sym, const char *symname);
+void add_moddevtable(struct buffer *buf, struct module *mod);
+
+/* sumversion.c */
+void maybe_frob_rcs_version(const char *modfilename,
+			    char *version,
+			    void *modinfo,
+			    unsigned long modinfo_offset);
+void get_src_version(const char *modname, char sum[], unsigned sumlen);
+
+/* from modpost.c */
+void *grab_file(const char *filename, unsigned long *size);
+char* get_next_line(unsigned long *pos, void *file, unsigned long size);
+void release_file(void *file, unsigned long size);
+
+void fatal(const char *fmt, ...);
+void warn(const char *fmt, ...);
+void merror(const char *fmt, ...);
diff --git a/scripts/mod/sumversion.c b/scripts/mod/sumversion.c
new file mode 100644
index 0000000000..d9cc6901d6
--- /dev/null
+++ b/scripts/mod/sumversion.c
@@ -0,0 +1,496 @@
+#include <netinet/in.h>
+#ifdef __sun__
+#include <inttypes.h>
+#else
+#include <stdint.h>
+#endif
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <limits.h>
+#include "modpost.h"
+
+/*
+ * Stolen form Cryptographic API.
+ *
+ * MD4 Message Digest Algorithm (RFC1320).
+ *
+ * Implementation derived from Andrew Tridgell and Steve French's
+ * CIFS MD4 implementation, and the cryptoapi implementation
+ * originally based on the public domain implementation written
+ * by Colin Plumb in 1993.
+ *
+ * Copyright (c) Andrew Tridgell 1997-1998.
+ * Modified by Steve French (sfrench@us.ibm.com) 2002
+ * Copyright (c) Cryptoapi developers.
+ * Copyright (c) 2002 David S. Miller (davem@redhat.com)
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+#define MD4_DIGEST_SIZE		16
+#define MD4_HMAC_BLOCK_SIZE	64
+#define MD4_BLOCK_WORDS		16
+#define MD4_HASH_WORDS		4
+
+struct md4_ctx {
+	uint32_t hash[MD4_HASH_WORDS];
+	uint32_t block[MD4_BLOCK_WORDS];
+	uint64_t byte_count;
+};
+
+static inline uint32_t lshift(uint32_t x, unsigned int s)
+{
+	x &= 0xFFFFFFFF;
+	return ((x << s) & 0xFFFFFFFF) | (x >> (32 - s));
+}
+
+static inline uint32_t F(uint32_t x, uint32_t y, uint32_t z)
+{
+	return (x & y) | ((~x) & z);
+}
+
+static inline uint32_t G(uint32_t x, uint32_t y, uint32_t z)
+{
+	return (x & y) | (x & z) | (y & z);
+}
+
+static inline uint32_t H(uint32_t x, uint32_t y, uint32_t z)
+{
+	return x ^ y ^ z;
+}
+
+#define ROUND1(a,b,c,d,k,s) (a = lshift(a + F(b,c,d) + k, s))
+#define ROUND2(a,b,c,d,k,s) (a = lshift(a + G(b,c,d) + k + (uint32_t)0x5A827999,s))
+#define ROUND3(a,b,c,d,k,s) (a = lshift(a + H(b,c,d) + k + (uint32_t)0x6ED9EBA1,s))
+
+/* XXX: this stuff can be optimized */
+static inline void le32_to_cpu_array(uint32_t *buf, unsigned int words)
+{
+	while (words--) {
+		*buf = ntohl(*buf);
+		buf++;
+	}
+}
+
+static inline void cpu_to_le32_array(uint32_t *buf, unsigned int words)
+{
+	while (words--) {
+		*buf = htonl(*buf);
+		buf++;
+	}
+}
+
+static void md4_transform(uint32_t *hash, uint32_t const *in)
+{
+	uint32_t a, b, c, d;
+
+	a = hash[0];
+	b = hash[1];
+	c = hash[2];
+	d = hash[3];
+
+	ROUND1(a, b, c, d, in[0], 3);
+	ROUND1(d, a, b, c, in[1], 7);
+	ROUND1(c, d, a, b, in[2], 11);
+	ROUND1(b, c, d, a, in[3], 19);
+	ROUND1(a, b, c, d, in[4], 3);
+	ROUND1(d, a, b, c, in[5], 7);
+	ROUND1(c, d, a, b, in[6], 11);
+	ROUND1(b, c, d, a, in[7], 19);
+	ROUND1(a, b, c, d, in[8], 3);
+	ROUND1(d, a, b, c, in[9], 7);
+	ROUND1(c, d, a, b, in[10], 11);
+	ROUND1(b, c, d, a, in[11], 19);
+	ROUND1(a, b, c, d, in[12], 3);
+	ROUND1(d, a, b, c, in[13], 7);
+	ROUND1(c, d, a, b, in[14], 11);
+	ROUND1(b, c, d, a, in[15], 19);
+
+	ROUND2(a, b, c, d,in[ 0], 3);
+	ROUND2(d, a, b, c, in[4], 5);
+	ROUND2(c, d, a, b, in[8], 9);
+	ROUND2(b, c, d, a, in[12], 13);
+	ROUND2(a, b, c, d, in[1], 3);
+	ROUND2(d, a, b, c, in[5], 5);
+	ROUND2(c, d, a, b, in[9], 9);
+	ROUND2(b, c, d, a, in[13], 13);
+	ROUND2(a, b, c, d, in[2], 3);
+	ROUND2(d, a, b, c, in[6], 5);
+	ROUND2(c, d, a, b, in[10], 9);
+	ROUND2(b, c, d, a, in[14], 13);
+	ROUND2(a, b, c, d, in[3], 3);
+	ROUND2(d, a, b, c, in[7], 5);
+	ROUND2(c, d, a, b, in[11], 9);
+	ROUND2(b, c, d, a, in[15], 13);
+
+	ROUND3(a, b, c, d,in[ 0], 3);
+	ROUND3(d, a, b, c, in[8], 9);
+	ROUND3(c, d, a, b, in[4], 11);
+	ROUND3(b, c, d, a, in[12], 15);
+	ROUND3(a, b, c, d, in[2], 3);
+	ROUND3(d, a, b, c, in[10], 9);
+	ROUND3(c, d, a, b, in[6], 11);
+	ROUND3(b, c, d, a, in[14], 15);
+	ROUND3(a, b, c, d, in[1], 3);
+	ROUND3(d, a, b, c, in[9], 9);
+	ROUND3(c, d, a, b, in[5], 11);
+	ROUND3(b, c, d, a, in[13], 15);
+	ROUND3(a, b, c, d, in[3], 3);
+	ROUND3(d, a, b, c, in[11], 9);
+	ROUND3(c, d, a, b, in[7], 11);
+	ROUND3(b, c, d, a, in[15], 15);
+
+	hash[0] += a;
+	hash[1] += b;
+	hash[2] += c;
+	hash[3] += d;
+}
+
+static inline void md4_transform_helper(struct md4_ctx *ctx)
+{
+	le32_to_cpu_array(ctx->block, sizeof(ctx->block) / sizeof(uint32_t));
+	md4_transform(ctx->hash, ctx->block);
+}
+
+static void md4_init(struct md4_ctx *mctx)
+{
+	mctx->hash[0] = 0x67452301;
+	mctx->hash[1] = 0xefcdab89;
+	mctx->hash[2] = 0x98badcfe;
+	mctx->hash[3] = 0x10325476;
+	mctx->byte_count = 0;
+}
+
+static void md4_update(struct md4_ctx *mctx,
+		       const unsigned char *data, unsigned int len)
+{
+	const uint32_t avail = sizeof(mctx->block) - (mctx->byte_count & 0x3f);
+
+	mctx->byte_count += len;
+
+	if (avail > len) {
+		memcpy((char *)mctx->block + (sizeof(mctx->block) - avail),
+		       data, len);
+		return;
+	}
+
+	memcpy((char *)mctx->block + (sizeof(mctx->block) - avail),
+	       data, avail);
+
+	md4_transform_helper(mctx);
+	data += avail;
+	len -= avail;
+
+	while (len >= sizeof(mctx->block)) {
+		memcpy(mctx->block, data, sizeof(mctx->block));
+		md4_transform_helper(mctx);
+		data += sizeof(mctx->block);
+		len -= sizeof(mctx->block);
+	}
+
+	memcpy(mctx->block, data, len);
+}
+
+static void md4_final_ascii(struct md4_ctx *mctx, char *out, unsigned int len)
+{
+	const unsigned int offset = mctx->byte_count & 0x3f;
+	char *p = (char *)mctx->block + offset;
+	int padding = 56 - (offset + 1);
+
+	*p++ = 0x80;
+	if (padding < 0) {
+		memset(p, 0x00, padding + sizeof (uint64_t));
+		md4_transform_helper(mctx);
+		p = (char *)mctx->block;
+		padding = 56;
+	}
+
+	memset(p, 0, padding);
+	mctx->block[14] = mctx->byte_count << 3;
+	mctx->block[15] = mctx->byte_count >> 29;
+	le32_to_cpu_array(mctx->block, (sizeof(mctx->block) -
+	                  sizeof(uint64_t)) / sizeof(uint32_t));
+	md4_transform(mctx->hash, mctx->block);
+	cpu_to_le32_array(mctx->hash, sizeof(mctx->hash) / sizeof(uint32_t));
+
+	snprintf(out, len, "%08X%08X%08X%08X",
+		 mctx->hash[0], mctx->hash[1], mctx->hash[2], mctx->hash[3]);
+}
+
+static inline void add_char(unsigned char c, struct md4_ctx *md)
+{
+	md4_update(md, &c, 1);
+}
+
+static int parse_string(const char *file, unsigned long len,
+			struct md4_ctx *md)
+{
+	unsigned long i;
+
+	add_char(file[0], md);
+	for (i = 1; i < len; i++) {
+		add_char(file[i], md);
+		if (file[i] == '"' && file[i-1] != '\\')
+			break;
+	}
+	return i;
+}
+
+static int parse_comment(const char *file, unsigned long len)
+{
+	unsigned long i;
+
+	for (i = 2; i < len; i++) {
+		if (file[i-1] == '*' && file[i] == '/')
+			break;
+	}
+	return i;
+}
+
+/* FIXME: Handle .s files differently (eg. # starts comments) --RR */
+static int parse_file(const char *fname, struct md4_ctx *md)
+{
+	char *file;
+	unsigned long i, len;
+
+	file = grab_file(fname, &len);
+	if (!file)
+		return 0;
+
+	for (i = 0; i < len; i++) {
+		/* Collapse and ignore \ and CR. */
+		if (file[i] == '\\' && (i+1 < len) && file[i+1] == '\n') {
+			i++;
+			continue;
+		}
+
+		/* Ignore whitespace */
+		if (isspace(file[i]))
+			continue;
+
+		/* Handle strings as whole units */
+		if (file[i] == '"') {
+			i += parse_string(file+i, len - i, md);
+			continue;
+		}
+
+		/* Comments: ignore */
+		if (file[i] == '/' && file[i+1] == '*') {
+			i += parse_comment(file+i, len - i);
+			continue;
+		}
+
+		add_char(file[i], md);
+	}
+	release_file(file, len);
+	return 1;
+}
+
+/* We have dir/file.o.  Open dir/.file.o.cmd, look for deps_ line to
+ * figure out source file. */
+static int parse_source_files(const char *objfile, struct md4_ctx *md)
+{
+	char *cmd, *file, *line, *dir;
+	const char *base;
+	unsigned long flen, pos = 0;
+	int dirlen, ret = 0, check_files = 0;
+
+	cmd = NOFAIL(malloc(strlen(objfile) + sizeof("..cmd")));
+
+	base = strrchr(objfile, '/');
+	if (base) {
+		base++;
+		dirlen = base - objfile;
+		sprintf(cmd, "%.*s.%s.cmd", dirlen, objfile, base);
+	} else {
+		dirlen = 0;
+		sprintf(cmd, ".%s.cmd", objfile);
+	}
+	dir = NOFAIL(malloc(dirlen + 1));
+	strncpy(dir, objfile, dirlen);
+	dir[dirlen] = '\0';
+
+	file = grab_file(cmd, &flen);
+	if (!file) {
+		warn("could not find %s for %s\n", cmd, objfile);
+		goto out;
+	}
+
+	/* There will be a line like so:
+		deps_drivers/net/dummy.o := \
+		  drivers/net/dummy.c \
+		    $(wildcard include/config/net/fastroute.h) \
+		  include/linux/config.h \
+		    $(wildcard include/config/h.h) \
+		  include/linux/module.h \
+
+	   Sum all files in the same dir or subdirs.
+	*/
+	while ((line = get_next_line(&pos, file, flen)) != NULL) {
+		char* p = line;
+		if (strncmp(line, "deps_", sizeof("deps_")-1) == 0) {
+			check_files = 1;
+			continue;
+		}
+		if (!check_files)
+			continue;
+
+		/* Continue until line does not end with '\' */
+		if ( *(p + strlen(p)-1) != '\\')
+			break;
+		/* Terminate line at first space, to get rid of final ' \' */
+		while (*p) {
+                       if (isspace(*p)) {
+				*p = '\0';
+				break;
+			}
+			p++;
+		}
+
+		/* Check if this file is in same dir as objfile */
+		if ((strstr(line, dir)+strlen(dir)-1) == strrchr(line, '/')) {
+			if (!parse_file(line, md)) {
+				warn("could not open %s: %s\n",
+				     line, strerror(errno));
+				goto out_file;
+			}
+
+		}
+
+	}
+
+	/* Everyone parsed OK */
+	ret = 1;
+out_file:
+	release_file(file, flen);
+out:
+	free(dir);
+	free(cmd);
+	return ret;
+}
+
+/* Calc and record src checksum. */
+void get_src_version(const char *modname, char sum[], unsigned sumlen)
+{
+	void *file;
+	unsigned long len;
+	struct md4_ctx md;
+	char *sources, *end, *fname;
+	const char *basename;
+	char filelist[PATH_MAX + 1];
+	char *modverdir = getenv("MODVERDIR");
+
+	if (!modverdir)
+		modverdir = ".";
+
+	/* Source files for module are in .tmp_versions/modname.mod,
+	   after the first line. */
+	if (strrchr(modname, '/'))
+		basename = strrchr(modname, '/') + 1;
+	else
+		basename = modname;
+	sprintf(filelist, "%s/%.*s.mod", modverdir,
+		(int) strlen(basename) - 2, basename);
+
+	file = grab_file(filelist, &len);
+	if (!file)
+		/* not a module or .mod file missing - ignore */
+		return;
+
+	sources = strchr(file, '\n');
+	if (!sources) {
+		warn("malformed versions file for %s\n", modname);
+		goto release;
+	}
+
+	sources++;
+	end = strchr(sources, '\n');
+	if (!end) {
+		warn("bad ending versions file for %s\n", modname);
+		goto release;
+	}
+	*end = '\0';
+
+	md4_init(&md);
+	while ((fname = strsep(&sources, " ")) != NULL) {
+		if (!*fname)
+			continue;
+		if (!parse_source_files(fname, &md))
+			goto release;
+	}
+
+	md4_final_ascii(&md, sum, sumlen);
+release:
+	release_file(file, len);
+}
+
+static void write_version(const char *filename, const char *sum,
+			  unsigned long offset)
+{
+	int fd;
+
+	fd = open(filename, O_RDWR);
+	if (fd < 0) {
+		warn("changing sum in %s failed: %s\n",
+			filename, strerror(errno));
+		return;
+	}
+
+	if (lseek(fd, offset, SEEK_SET) == (off_t)-1) {
+		warn("changing sum in %s:%lu failed: %s\n",
+			filename, offset, strerror(errno));
+		goto out;
+	}
+
+	if (write(fd, sum, strlen(sum)+1) != strlen(sum)+1) {
+		warn("writing sum in %s failed: %s\n",
+			filename, strerror(errno));
+		goto out;
+	}
+out:
+	close(fd);
+}
+
+static int strip_rcs_crap(char *version)
+{
+	unsigned int len, full_len;
+
+	if (strncmp(version, "$Revision", strlen("$Revision")) != 0)
+		return 0;
+
+	/* Space for version string follows. */
+	full_len = strlen(version) + strlen(version + strlen(version) + 1) + 2;
+
+	/* Move string to start with version number: prefix will be
+	 * $Revision$ or $Revision: */
+	len = strlen("$Revision");
+	if (version[len] == ':' || version[len] == '$')
+		len++;
+	while (isspace(version[len]))
+		len++;
+	memmove(version, version+len, full_len-len);
+	full_len -= len;
+
+	/* Preserve up to next whitespace. */
+	len = 0;
+	while (version[len] && !isspace(version[len]))
+		len++;
+	memmove(version + len, version + strlen(version),
+		full_len - strlen(version));
+	return 1;
+}
+
+/* Clean up RCS-style version numbers. */
+void maybe_frob_rcs_version(const char *modfilename,
+			    char *version,
+			    void *modinfo,
+			    unsigned long version_offset)
+{
+	if (strip_rcs_crap(version))
+		write_version(modfilename, version, version_offset);
+}