The third parameter may be a text as in this example, but it may also
be an expanded variable or a macro.
+ cc-fullversion
+ cc-fullversion is useful when the exact version of gcc is needed.
+ One typical use-case is when a specific GCC version is broken.
+ cc-fullversion points out a more specific version than cc-version does.
+
+ Example:
+ #arch/powerpc/Makefile
+ $(Q)if test "$(call cc-fullversion)" = "040200" ; then \
+ echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \
+ false ; \
+ fi
+
+ In this example for a specific GCC version the build will error out explaining
+ to the user why it stops.
=== 4 Host Program support
always := $(offsets-file)
targets := $(offsets-file)
targets += arch/$(ARCH)/kernel/asm-offsets.s
+clean-files := $(addprefix $(objtree)/,$(targets))
# Default sed regexp - multiline due to syntax constraints
define sed-y
include $(srctree)/arch/$(ARCH)/Makefile
ifdef CONFIG_FRAME_POINTER
-CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
+CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
else
CFLAGS += -fomit-frame-pointer
endif
cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
-T $(vmlinux-lds) $(vmlinux-init) \
--start-group $(vmlinux-main) --end-group \
- $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
+ $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^)
# Generate new vmlinux version
quiet_cmd_vmlinux_version = GEN .version
endif # ifdef CONFIG_KALLSYMS
+# Do modpost on a prelinked vmlinux. The finally linked vmlinux has
+# relevant sections renamed as per the linker script.
+quiet_cmd_vmlinux-modpost = LD $@
+ cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \
+ $(vmlinux-init) --start-group $(vmlinux-main) --end-group \
+ $(filter-out $(vmlinux-init) $(vmlinux-main) $(vmlinux-lds) FORCE ,$^)
+define rule_vmlinux-modpost
+ :
+ +$(call cmd,vmlinux-modpost)
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@
+ $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd
+endef
+
# vmlinux image - including updated kernel symbols
-vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
+vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) vmlinux.o FORCE
ifdef CONFIG_HEADERS_CHECK
$(Q)$(MAKE) -f $(srctree)/Makefile headers_check
endif
+ $(call vmlinux-modpost)
$(call if_changed_rule,vmlinux__)
- $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@
$(Q)rm -f .old_version
+vmlinux.o: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE
+ $(call if_changed_rule,vmlinux-modpost)
+
# The actual objects are generated when descending,
# make sure no implicit rule kicks in
$(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
-I __initdata,__exitdata,__acquires,__releases \
-I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
--extra=+f --c-kinds=+px \
- --regex-asm='/ENTRY\(([^)]*)\).*/\1/'; \
+ --regex-asm='/^ENTRY\(([^)]*)\).*/\1/'; \
$(all-kconfigs) | xargs $1 -a \
--langdef=kconfig \
--language-force=kconfig \
___data_start = . ;
__Sdata = . ;
.data : { /* Data */
- *(.data)
+ DATA_DATA
}
__edata = . ; /* End of data section */
_edata = . ;
___data_start = . ;
__Sdata = . ;
.data : { /* Data */
- *(.data)
+ DATA_DATA
}
__edata = . ; /* End of data section. */
_edata = . ;
}
#endif
-struct genapic apic_es7000 = APIC_INIT("es7000", probe_es7000);
+struct genapic __initdata_refok apic_es7000 = APIC_INIT("es7000", probe_es7000);
false; \
fi ; \
fi
+ @if test "$(call cc-fullversion)" = "040200" \
+ && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \
+ echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \
+ echo 'kernel with modules enabled.' ; \
+ echo -n '*** Please use a different GCC version or ' ; \
+ echo 'disable kernel modules' ; \
+ false ; \
+ fi
@if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
echo 'correctly with old versions of binutils.' ; \
}
#else
.data : {
- *(.data .data.rel* .toc1)
+ DATA_DATA
+ *(.data.rel*)
+ *(.toc1)
*(.branch_lt)
}
_fdata = .;
.data :
{
- *(.data) CONSTRUCTORS
+ DATA_DATA
+ CONSTRUCTORS
. = ALIGN(XCHAL_ICACHE_LINESIZE);
*(.data.cacheline_aligned)
}
extern const struct linux_logo logo_superh_clut224;
extern const struct linux_logo logo_m32r_clut224;
-
-const struct linux_logo *fb_find_logo(int depth)
+/* logo's are marked __initdata. Use __init_refok to tell
+ * modpost that it is intended that this function uses data
+ * marked __initdata.
+ */
+const struct linux_logo * __init_refok fb_find_logo(int depth)
{
const struct linux_logo *logo = NULL;
$(call cc-option,-falign-functions=0,-malign-functions=0))
# cc-version
-# Usage gcc-ver := $(call cc-version,$(CC))
+# Usage gcc-ver := $(call cc-version)
cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh $(CC))
+# cc-fullversion
+# Usage gcc-ver := $(call cc-fullversion)
+cc-fullversion = $(shell $(CONFIG_SHELL) \
+ $(srctree)/scripts/gcc-version.sh -p $(CC))
+
# cc-ifversion
# Usage: EXTRA_CFLAGS += $(call cc-ifversion, -lt, 0402, -O1)
cc-ifversion = $(shell [ $(call cc-version, $(CC)) $(1) $(2) ] && echo $(3))
PHONY := __build
__build:
+# Init all relevant variables used in kbuild files so
+# 1) they have correct type
+# 2) they do not inherit any value from the environment
+obj-y :=
+obj-m :=
+lib-y :=
+lib-m :=
+always :=
+targets :=
+subdir-y :=
+subdir-m :=
+EXTRA_AFLAGS :=
+EXTRA_CFLAGS :=
+EXTRA_CPPFLAGS :=
+EXTRA_LDFLAGS :=
+
# Read .config if it exist, otherwise ignore
-include include/config/auto.conf
# Eliminate the contents of (and inclusions of) compiler.h
HDRSED := sed -e "s/ inline / __inline__ /g" \
- -e "s/[[:space:]]__user[[:space:]]\+/ /g" \
- -e "s/(__user[[:space:]]\+/ (/g" \
- -e "s/[[:space:]]__force[[:space:]]\+/ /g" \
- -e "s/(__force[[:space:]]\+/ (/g" \
- -e "s/[[:space:]]__iomem[[:space:]]\+/ /g" \
- -e "s/(__iomem[[:space:]]\+/ (/g" \
- -e "s/[[:space:]]__attribute_const__[[:space:]]\+/\ /g" \
+ -e "s/[[:space:]]__user[[:space:]]\{1,\}/ /g" \
+ -e "s/(__user[[:space:]]\{1,\}/ (/g" \
+ -e "s/[[:space:]]__force[[:space:]]\{1,\}/ /g" \
+ -e "s/(__force[[:space:]]\{1,\}/ (/g" \
+ -e "s/[[:space:]]__iomem[[:space:]]\{1,\}/ /g" \
+ -e "s/(__iomem[[:space:]]\{1,\}/ (/g" \
+ -e "s/[[:space:]]__attribute_const__[[:space:]]\{1,\}/\ /g" \
-e "s/[[:space:]]__attribute_const__$$//" \
-e "/^\#include <linux\/compiler.h>/d"
$(call cmd,modpost) $(wildcard vmlinux) $(filter-out FORCE,$^)
quiet_cmd_kernel-mod = MODPOST $@
- cmd_kernel-mod = $(cmd_modpost) $(KBUILD_VMLINUX_OBJS)
+ cmd_kernel-mod = $(cmd_modpost) $@
PHONY += vmlinux
-vmlinux: FORCE
+vmlinux.o: FORCE
$(call cmd,kernel-mod)
# Declare generated files as targets for modpost
use bytes;
use File::Basename;
-#
+# Default options
+$max_width = 79;
+
# Clean up space-tab sequences, either by removing spaces or
# replacing them with tabs.
sub clean_space_tabs($)
return $lo;
}
+# Compute the visual width of a string
+sub strwidth($) {
+ no bytes; # Tab alignment depends on characters
+
+ my($li) = @_;
+ my($c, $i);
+ my $pos = 0;
+ my $mlen = 0;
+
+ for ($i = 0; $i < length($li); $i++) {
+ $c = substr($li,$i,1);
+ if ($c eq "\t") {
+ $pos = ($pos+8) & ~7;
+ } elsif ($c eq "\n") {
+ $mlen = $pos if ($pos > $mlen);
+ $pos = 0;
+ } else {
+ $pos++;
+ }
+ }
+
+ $mlen = $pos if ($pos > $mlen);
+ return $mlen;
+}
+
$name = basename($0);
-foreach $f ( @ARGV ) {
+@files = ();
+
+while (defined($a = shift(@ARGV))) {
+ if ($a =~ /^-/) {
+ if ($a eq '-width' || $a eq '-w') {
+ $max_width = shift(@ARGV)+0;
+ } else {
+ print STDERR "Usage: $name [-width #] files...\n";
+ exit 1;
+ }
+ } else {
+ push(@files, $a);
+ }
+}
+
+foreach $f ( @files ) {
print STDERR "$name: $f\n";
if (! -f $f) {
@blanks = ();
@lines = ();
+ $lineno = 0;
while ( defined($line = <FILE>) ) {
+ $lineno++;
$in_bytes += length($line);
$line =~ s/[ \t\r]*$//; # Remove trailing spaces
$line = clean_space_tabs($line);
@blanks = ();
$blank_bytes = 0;
}
+
+ $l_width = strwidth($line);
+ if ($max_width && $l_width > $max_width) {
+ print STDERR
+ "$f:$lineno: line exceeds $max_width characters ($l_width)\n";
+ }
}
# Any blanks at the end of the file are discarded
use bytes;
use File::Basename;
-#
+# Default options
+$max_width = 79;
+
# Clean up space-tab sequences, either by removing spaces or
# replacing them with tabs.
sub clean_space_tabs($)
return $lo;
}
+# Compute the visual width of a string
+sub strwidth($) {
+ no bytes; # Tab alignment depends on characters
+
+ my($li) = @_;
+ my($c, $i);
+ my $pos = 0;
+ my $mlen = 0;
+
+ for ($i = 0; $i < length($li); $i++) {
+ $c = substr($li,$i,1);
+ if ($c eq "\t") {
+ $pos = ($pos+8) & ~7;
+ } elsif ($c eq "\n") {
+ $mlen = $pos if ($pos > $mlen);
+ $pos = 0;
+ } else {
+ $pos++;
+ }
+ }
+
+ $mlen = $pos if ($pos > $mlen);
+ return $mlen;
+}
+
$name = basename($0);
-foreach $f ( @ARGV ) {
+@files = ();
+
+while (defined($a = shift(@ARGV))) {
+ if ($a =~ /^-/) {
+ if ($a eq '-width' || $a eq '-w') {
+ $max_width = shift(@ARGV)+0;
+ } else {
+ print STDERR "Usage: $name [-width #] files...\n";
+ exit 1;
+ }
+ } else {
+ push(@files, $a);
+ }
+}
+
+foreach $f ( @files ) {
print STDERR "$name: $f\n";
if (! -f $f) {
$in_bytes = 0;
$out_bytes = 0;
+ $lineno = 0;
@lines = ();
$err = 0;
while ( defined($line = <FILE>) ) {
+ $lineno++;
$in_bytes += length($line);
if (!$in_hunk) {
- if ($line =~ /^\@\@\s+\-([0-9]+),([0-9]+)\s+\+([0-9]+),([0-9]+)\s\@\@/) {
+ if ($line =~
+ /^\@\@\s+\-([0-9]+),([0-9]+)\s+\+([0-9]+),([0-9]+)\s\@\@/) {
$minus_lines = $2;
$plus_lines = $4;
if ($minus_lines || $plus_lines) {
$text =~ s/[ \t\r]*$//; # Remove trailing spaces
$text = clean_space_tabs($text);
+ $l_width = strwidth($text);
+ if ($max_width && $l_width > $max_width) {
+ print STDERR
+ "$f:$lineno: adds line exceeds $max_width ",
+ "characters ($l_width)\n";
+ }
+
push(@hunk_lines, '+'.$text);
} elsif ($line =~ /^\-/) {
$minus_lines--;
#!/bin/sh
#
-# gcc-version gcc-command
+# gcc-version [-p] gcc-command
#
# Prints the gcc version of `gcc-command' in a canonical 4-digit form
# such as `0295' for gcc-2.95, `0303' for gcc-3.3, etc.
#
+# With the -p option, prints the patchlevel as well, for example `029503' for
+# gcc-2.95.3, `030301' for gcc-3.3.1, etc.
+#
+
+if [ $1 = "-p" ] ; then with_patchlevel=1; shift; fi
compiler="$*"
MAJOR=$(echo __GNUC__ | $compiler -E -xc - | tail -n 1)
MINOR=$(echo __GNUC_MINOR__ | $compiler -E -xc - | tail -n 1)
-printf "%02d%02d\\n" $MAJOR $MINOR
-
+if [ "x$with_patchlevel" != "x" ] ; then
+ PATCHLEVEL=$(echo __GNUC_PATCHLEVEL__ | $compiler -E -xc - | tail -n 1)
+ printf "%02d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
+else
+ printf "%02d%02d\\n" $MAJOR $MINOR
+fi
-o <file> Create gzipped initramfs file named <file> using
gen_init_cpio and gzip
-u <uid> User ID to map to user ID 0 (root).
- <uid> is only meaningful if <cpio_source>
- is a directory.
+ <uid> is only meaningful if <cpio_source> is a
+ directory. "squash" forces all files to uid 0.
-g <gid> Group ID to map to group ID 0 (root).
- <gid> is only meaningful if <cpio_source>
- is a directory.
+ <gid> is only meaningful if <cpio_source> is a
+ directory. "squash" forces all files to gid 0.
<cpio_source> File list or directory for cpio archive.
If <cpio_source> is a .cpio file it will be used
as direct input to initramfs.
local gid="$4"
local ftype=$(filetype "${location}")
# remap uid/gid to 0 if necessary
- [ "$uid" -eq "$root_uid" ] && uid=0
- [ "$gid" -eq "$root_gid" ] && gid=0
+ [ "$root_uid" = "squash" ] && uid=0 || [ "$uid" -eq "$root_uid" ] && uid=0
+ [ "$root_gid" = "squash" ] && gid=0 || [ "$gid" -eq "$root_gid" ] && gid=0
local str="${mode} ${uid} ${gid}"
[ "${ftype}" == "invalid" ] && return 0
*
*/
-#define _GNU_SOURCE
-
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
table_cnt = pos;
}
+static void *find_token(unsigned char *str, int len, unsigned char *token)
+{
+ int i;
+
+ for (i = 0; i < len - 1; i++) {
+ if (str[i] == token[0] && str[i+1] == token[1])
+ return &str[i];
+ }
+ return NULL;
+}
+
/* replace a given token in all the valid symbols. Use the sampled symbols
* to update the counts */
static void compress_symbols(unsigned char *str, int idx)
p1 = table[i].sym;
/* find the token on the symbol */
- p2 = memmem(p1, len, str, 2);
+ p2 = find_token(p1, len, str);
if (!p2) continue;
/* decrease the counts for this symbol's tokens */
if (size < 2) break;
/* find the token on the symbol */
- p2 = memmem(p1, size, str, 2);
+ p2 = find_token(p1, size, str);
} while (p2);
silentoldconfig: $(obj)/conf
$< -s arch/$(ARCH)/Kconfig
+# Create new linux.po file
+# Adjust charset to UTF-8 in .po file to accept UTF-8 in Kconfig files
+# The symlink is used to repair a deficiency in arch/um
update-po-config: $(obj)/kxgettext
- xgettext --default-domain=linux \
- --add-comments --keyword=_ --keyword=N_ \
- --files-from=scripts/kconfig/POTFILES.in \
- --output scripts/kconfig/config.pot
- $(Q)ln -fs Kconfig_i386 arch/um/Kconfig_arch
- $(Q)for i in `ls arch/`; \
- do \
- scripts/kconfig/kxgettext arch/$$i/Kconfig \
- | msguniq -o scripts/kconfig/linux_$${i}.pot; \
- done
- $(Q)msgcat scripts/kconfig/config.pot \
- `find scripts/kconfig/ -type f -name linux_*.pot` \
- --output scripts/kconfig/linux_raw.pot
- $(Q)msguniq --sort-by-file scripts/kconfig/linux_raw.pot \
- --output scripts/kconfig/linux.pot
- $(Q)rm -f arch/um/Kconfig_arch
- $(Q)rm -f scripts/kconfig/linux_*.pot scripts/kconfig/config.pot
+ xgettext --default-domain=linux \
+ --add-comments --keyword=_ --keyword=N_ \
+ --from-code=UTF-8 \
+ --files-from=scripts/kconfig/POTFILES.in \
+ --output $(obj)/config.pot
+ $(Q)sed -i s/CHARSET/UTF-8/ $(obj)/config.pot
+ $(Q)ln -fs Kconfig.i386 arch/um/Kconfig.arch
+ (for i in `ls arch/`; \
+ do \
+ $(obj)/kxgettext arch/$$i/Kconfig; \
+ done ) >> $(obj)/config.pot
+ msguniq --sort-by-file --to-code=UTF-8 $(obj)/config.pot \
+ --output $(obj)/linux.pot
+ $(Q)rm -f arch/um/Kconfig.arch
+ $(Q)rm -f $(obj)/config.pot
PHONY += randconfig allyesconfig allnoconfig allmodconfig defconfig
conf_unsaved++;
/* maybe print value in verbose mode... */
sym_ok:
+ if (!sym_is_choice(sym))
+ continue;
+ /* The choice symbol only has a set value (and thus is not new)
+ * if all its visible childs have values.
+ */
+ prop = sym_get_choice_prop(sym);
+ flags = sym->flags;
+ for (e = prop->expr; e; e = e->left.expr)
+ if (e->right.sym->visible != no)
+ flags &= e->right.sym->flags;
+ sym->flags &= flags | ~SYMBOL_DEF_USER;
+ }
+
+ for_all_symbols(i, sym) {
if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
- if (sym->visible == no)
+ /* Reset values of generates values, so they'll appear
+ * as new, if they should become visible, but that
+ * doesn't quite work if the Kconfig and the saved
+ * configuration disagree.
+ */
+ if (sym->visible == no && !conf_unsaved)
sym->flags &= ~SYMBOL_DEF_USER;
switch (sym->type) {
case S_STRING:
case S_INT:
case S_HEX:
- if (!sym_string_within_range(sym, sym->def[S_DEF_USER].val))
- sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
+ /* Reset a string value if it's out of range */
+ if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
+ break;
+ sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
+ conf_unsaved++;
+ break;
default:
break;
}
}
- if (!sym_is_choice(sym))
- continue;
- prop = sym_get_choice_prop(sym);
- flags = sym->flags;
- for (e = prop->expr; e; e = e->left.expr)
- if (e->right.sym->visible != no)
- flags &= e->right.sym->flags;
- sym->flags &= flags | ~SYMBOL_DEF_USER;
}
sym_add_change_count(conf_warnings || conf_unsaved);
struct message *m = message__list;
while (m != NULL) {
- message__print_gettext_msgid_msgstr(m);
+ /* skip empty lines ("") */
+ if (strlen(m->msg) > sizeof("\"\""))
+ message__print_gettext_msgid_msgstr(m);
m = m->next;
}
}
printf "Usage: $0 [-check compiler options|-header|-library]\n"
}
-if [ $# == 0 ]; then
+if [ $# -eq 0 ]; then
usage
exit 1
fi
{
struct symbol **sym_arr;
struct gstr res;
+ char *dialog_input;
int dres;
again:
dialog_clear();
dres = dialog_inputbox(_("Search Configuration Parameter"),
- _("Enter CONFIG_ (sub)string to search for (omit CONFIG_)"),
+ _("Enter CONFIG_ (sub)string to search for "
+ "(with or without \"CONFIG\")"),
10, 75, "");
switch (dres) {
case 0:
return;
}
- sym_arr = sym_re_search(dialog_input_result);
+ /* strip CONFIG_ if necessary */
+ dialog_input = dialog_input_result;
+ if (strncasecmp(dialog_input_result, "CONFIG_", 7) == 0)
+ dialog_input += 7;
+
+ sym_arr = sym_re_search(dialog_input);
res = get_relations_str(sym_arr);
free(sym_arr);
show_textbox(_("Search Results"), str_get(&res), 0, 0);
else
myname = modname;
- return strcmp(myname, "vmlinux") == 0;
+ return (strcmp(myname, "vmlinux") == 0) ||
+ (strcmp(myname, "vmlinux.o") == 0);
}
void *do_nofail(void *ptr, const char *expr)
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;
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++) {
* warn here.
* the pattern is identified by:
* tosec = .init.text | .exit.text | .init.data
- * fromsec = .data
- * atsym = *driver, *_template, *_sht, *_ops, *_probe, *probe_one, *_console
+ * fromsec = .data | .data.rel | .data.rel.*
+ * atsym = *driver, *_template, *_sht, *_ops, *_probe, *probe_one, *_console, *_timer
*
* Pattern 3:
- * Whitelist all references from .pci_fixup* section to .init.text
- * This is part of the PCI init when built-in
- *
- * Pattern 4:
* Whitelist all refereces from .text.head to .init.data
* Whitelist all refereces from .text.head to .init.text
*
- * Pattern 5:
+ * 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
* This pattern is identified by
* refsymname = __init_begin, _sinittext, _einittext
*
- * Pattern 7:
- * Logos used in drivers/video/logo reside in __initdata but the
- * funtion that references them are EXPORT_SYMBOL() so cannot be
- * marker __init. So we whitelist them here.
- * The pattern is:
- * tosec = .init.data
- * fromsec = .text*
- * refsymname = logo_
- *
- * Pattern 8:
- * Symbols contained in .paravirtprobe may safely reference .init.text.
- * The pattern is:
- * tosec = .init.text
- * fromsec = .paravirtprobe
- *
- * Pattern 10:
- * ia64 has machvec table for each platform and
- * powerpc has a machine desc table for each platform.
- * It is mixture of function pointers of .init.text and .text.
- * fromsec = .machvec | .machine.desc
**/
static int secref_whitelist(const char *modname, const char *tosec,
const char *fromsec, const char *atsym,
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",
- "apic_es7000",
NULL
};
(strcmp(tosec, ".exit.text") != 0) &&
(strcmp(tosec, ".init.data") != 0))
f2 = 0;
- if (strcmp(fromsec, ".data") != 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++)
return 1;
/* Check for pattern 3 */
- if ((strncmp(fromsec, ".pci_fixup", strlen(".pci_fixup")) == 0) &&
- (strcmp(tosec, ".init.text") == 0))
- return 1;
-
- /* Check for pattern 4 */
if ((strcmp(fromsec, ".text.head") == 0) &&
((strcmp(tosec, ".init.data") == 0) ||
(strcmp(tosec, ".init.text") == 0)))
return 1;
- /* Check for pattern 5 */
+ /* Check for pattern 4 */
for (s = pat3refsym; *s; s++)
if (strcmp(refsymname, *s) == 0)
return 1;
- /* Check for pattern 7 */
- if ((strcmp(tosec, ".init.data") == 0) &&
- (strncmp(fromsec, ".text", strlen(".text")) == 0) &&
- (strncmp(refsymname, "logo_", strlen("logo_")) == 0))
- return 1;
-
- /* Check for pattern 8 */
- if ((strcmp(tosec, ".init.text") == 0) &&
- (strcmp(fromsec, ".paravirtprobe") == 0))
- return 1;
-
- /* Check for pattern 10 */
- if ((strcmp(fromsec, ".machvec") == 0) ||
- (strcmp(fromsec, ".machine.desc") == 0))
- return 1;
-
return 0;
}
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;
}
elf->strtab + before->st_name, refsymname))
return;
- /* fromsec whitelist - without a valid 'before'
- * powerpc has a GOT table in .got2 section */
- if (strcmp(fromsec, ".got2") == 0)
- return;
-
if (before && after) {
warn("%s(%s+0x%llx): Section mismatch: reference to %s:%s "
"(between '%s' and '%s')\n",
}
}
+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.
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);
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);
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)
}
}
+/*
+ * 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",
+ 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
return 0;
}
-/**
+/*
* Identify sections from which references to a .init section is OK.
*
* Unfortunately references to read only data that referenced .init
*
* 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[] = {
- ".init",
- ".opd", /* see comment [OPD] at exit_section_ref_ok() */
- ".toc1", /* used by ppc64 */
- ".stab",
- ".data.rel.ro", /* used by parisc64 */
- ".parainstructions",
- ".text.lock",
- "__bug_table", /* used by powerpc for BUG() */
- ".pci_fixup_header",
- ".pci_fixup_final",
- ".pdr",
- "__param",
- "__ex_table",
- ".fixup",
- ".smp_locks",
- ".plt", /* seen on ARCH=um build on x86_64. Harmless */
+ "__dbe_table", /* MIPS generate these */
"__ftr_fixup", /* powerpc cpu feature fixup */
"__fw_ftr_fixup", /* powerpc firmware feature fixup */
- ".cranges", /* used by sh64 */
+ "__param",
+ ".data.rel.ro", /* used by parisc64 */
+ ".init",
+ ".text.lock",
NULL
};
/* Start of section names */
const char *namelist2[] = {
".init.",
- ".altinstructions",
- ".eh_frame",
- ".debug",
- ".parainstructions",
+ ".pci_fixup",
".rodata",
NULL
};
- /* part of section name */
- const char *namelist3 [] = {
- ".unwind", /* sample: IA_64.unwind.init.text */
- NULL
- };
+
+ if (initexit_section_ref_ok(name))
+ return 1;
for (s = namelist1; *s; s++)
if (strcmp(*s, name) == 0)
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;
+
+ /* 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;
/*
* Identify sections from which references to 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 exit_section_ref_ok(const char *name)
{
const char **s;
/* Absolute section names */
const char *namelist1[] = {
- ".exit.text",
".exit.data",
- ".init.text",
- ".rodata",
- ".opd", /* See comment [OPD] */
- ".toc1", /* used by ppc64 */
- ".altinstructions",
- ".pdr",
- "__bug_table", /* used by powerpc for BUG() */
+ ".exit.text",
".exitcall.exit",
- ".eh_frame",
- ".parainstructions",
- ".stab",
- "__ex_table",
- ".fixup",
- ".smp_locks",
- ".plt", /* seen on ARCH=um build on x86_64. Harmless */
- ".cranges", /* used by sh64 */
- NULL
- };
- /* Start of section names */
- const char *namelist2[] = {
- ".debug",
- NULL
- };
- /* part of section name */
- const char *namelist3 [] = {
- ".unwind", /* Sample: IA_64.unwind.exit.text */
+ ".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;
- for (s = namelist3; *s; s++)
- if (strstr(name, *s) != NULL)
- return 1;
return 0;
}
#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)
exit(1);
}
- if (! (cpio_list = fopen(argv[1], "r"))) {
+ if (!strcmp(argv[1], "-"))
+ cpio_list = stdin;
+ else if (! (cpio_list = fopen(argv[1], "r"))) {
fprintf(stderr, "ERROR: unable to open '%s': %s\n\n",
argv[1], strerror(errno));
usage(argv[0]);
projects / cascardo / linux.git / commitdiff