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Revert "kbuild: strip generated symbols from *.ko"

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This reverts commit ad7a953c52.

And commit: ("allow stripping of generated symbols under CONFIG_KALLSYMS_ALL")
            9bb482476c

These stripping patches has caused a set of issues:

1) People have reported compatibility issues with binutils due to
   lack of support for `--strip-unneeded-symbols' with objcopy 2.15.92.0.2
   Reported by: Wenji
2) ccache and distcc no longer works as expeced
   Reported by: Ted, Roland, + others
3) The installed modules increased a lot in size
   Reported by: Ted, Davej + others

Reported-by: Wenji Huang <wenji.huang@oracle.com>
Reported-by: "Theodore Ts'o" <tytso@mit.edu>
Reported-by: Dave Jones <davej@redhat.com>
Reported-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Sam Ravnborg 2009-01-14 21:38:20 +01:00
parent a6525042bf
commit 2ea038917b
12 changed files with 181 additions and 252 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
Makefile
View File

@ -606,25 +606,20 @@ export INSTALL_PATH ?= /boot
MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
export MODLIB export MODLIB
strip-symbols := $(srctree)/scripts/strip-symbols \
$(wildcard $(srctree)/arch/$(ARCH)/scripts/strip-symbols)
# #
# INSTALL_MOD_STRIP, if defined, will cause modules to be stripped while # INSTALL_MOD_STRIP, if defined, will cause modules to be
# they get installed. If INSTALL_MOD_STRIP is '1', then the default # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
# options (see below) will be used. Otherwise, INSTALL_MOD_STRIP will # the default option --strip-debug will be used. Otherwise,
# be used as the option(s) to the objcopy command. # INSTALL_MOD_STRIP will used as the options to the strip command.
ifdef INSTALL_MOD_STRIP ifdef INSTALL_MOD_STRIP
ifeq ($(INSTALL_MOD_STRIP),1) ifeq ($(INSTALL_MOD_STRIP),1)
mod_strip_cmd = $(OBJCOPY) --strip-debug mod_strip_cmd = $(STRIP) --strip-debug
ifeq ($(CONFIG_KALLSYMS_ALL),$(CONFIG_KALLSYMS_STRIP_GENERATED))
mod_strip_cmd += --wildcard $(addprefix --strip-symbols ,$(strip-symbols))
endif
else else
mod_strip_cmd = $(OBJCOPY) $(INSTALL_MOD_STRIP) mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
endif # INSTALL_MOD_STRIP=1 endif # INSTALL_MOD_STRIP=1
else else
mod_strip_cmd = false mod_strip_cmd = true
endif # INSTALL_MOD_STRIP endif # INSTALL_MOD_STRIP
export mod_strip_cmd export mod_strip_cmd
@ -754,7 +749,6 @@ last_kallsyms := 2
endif endif
kallsyms.o := .tmp_kallsyms$(last_kallsyms).o kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
kallsyms.h := $(wildcard include/config/kallsyms/*.h) $(wildcard include/config/kallsyms/*/*.h)
define verify_kallsyms define verify_kallsyms
$(Q)$(if $($(quiet)cmd_sysmap), \ $(Q)$(if $($(quiet)cmd_sysmap), \
@ -779,41 +773,24 @@ endef
# Generate .S file with all kernel symbols # Generate .S file with all kernel symbols
quiet_cmd_kallsyms = KSYM $@ quiet_cmd_kallsyms = KSYM $@
cmd_kallsyms = { test $* -eq 0 || $(NM) -n $<; } \ cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
| $(KALLSYMS) $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) >$@ $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
quiet_cmd_kstrip = STRIP $@ .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
cmd_kstrip = $(OBJCOPY) --wildcard $(addprefix --strip$(if $(CONFIG_RELOCATABLE),-unneeded)-symbols ,$(filter %/scripts/strip-symbols,$^)) $< $@
$(foreach n,0 1 2 3,.tmp_kallsyms$(n).o): KBUILD_AFLAGS += -Wa,--strip-local-absolute
$(foreach n,0 1 2 3,.tmp_kallsyms$(n).o): %.o: %.S scripts FORCE
$(call if_changed_dep,as_o_S) $(call if_changed_dep,as_o_S)
ifeq ($(CONFIG_KALLSYMS_STRIP_GENERATED),y) .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
strip-ext := .stripped
endif
.tmp_kallsyms%.S: .tmp_vmlinux%$(strip-ext) $(KALLSYMS) $(kallsyms.h)
$(call cmd,kallsyms) $(call cmd,kallsyms)
# make -jN seems to have problems with intermediate files, see bug #3330.
.SECONDARY: $(foreach n,1 2 3,.tmp_vmlinux$(n).stripped)
.tmp_vmlinux%.stripped: .tmp_vmlinux% $(strip-symbols) $(kallsyms.h)
$(call cmd,kstrip)
ifneq ($(CONFIG_DEBUG_INFO),y)
.tmp_vmlinux%: LDFLAGS_vmlinux += -S
endif
# .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
.tmp_vmlinux%: $(vmlinux-lds) $(vmlinux-all) FORCE .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
$(if $(filter 1,$*),$(call if_changed_rule,ksym_ld),$(call if_changed,vmlinux__)) $(call if_changed_rule,ksym_ld)
.tmp_vmlinux0$(strip-ext): .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
$(Q)echo "placeholder" >$@ $(call if_changed,vmlinux__)
.tmp_vmlinux1: .tmp_kallsyms0.o .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
.tmp_vmlinux2: .tmp_kallsyms1.o $(call if_changed,vmlinux__)
.tmp_vmlinux3: .tmp_kallsyms2.o
# Needs to visit scripts/ before $(KALLSYMS) can be used. # Needs to visit scripts/ before $(KALLSYMS) can be used.
$(KALLSYMS): scripts ; $(KALLSYMS): scripts ;

1
arch/x86/scripts/strip-symbols
View File

@ -1 +0,0 @@
__cpu_vendor_dev_X86_VENDOR_*

7
init/Kconfig
View File

@ -626,13 +626,6 @@ config KALLSYMS_ALL
Say N. Say N.
config KALLSYMS_STRIP_GENERATED
bool "Strip machine generated symbols from kallsyms"
depends on KALLSYMS_ALL
default y
help
Say N if you want kallsyms to retain even machine generated symbols.
config KALLSYMS_EXTRA_PASS config KALLSYMS_EXTRA_PASS
bool "Do an extra kallsyms pass" bool "Do an extra kallsyms pass"
depends on KALLSYMS depends on KALLSYMS

16
kernel/kallsyms.c
View File

@ -30,19 +30,20 @@
#define all_var 0 #define all_var 0
#endif #endif
extern const unsigned long kallsyms_addresses[]; /* These will be re-linked against their real values during the second link stage */
extern const u8 kallsyms_names[]; extern const unsigned long kallsyms_addresses[] __attribute__((weak));
extern const u8 kallsyms_names[] __attribute__((weak));
/* tell the compiler that the count isn't in the small data section if the arch /* tell the compiler that the count isn't in the small data section if the arch
* has one (eg: FRV) * has one (eg: FRV)
*/ */
extern const unsigned long kallsyms_num_syms extern const unsigned long kallsyms_num_syms
__attribute__((__section__(".rodata"))); __attribute__((weak, section(".rodata")));
extern const u8 kallsyms_token_table[]; extern const u8 kallsyms_token_table[] __attribute__((weak));
extern const u16 kallsyms_token_index[]; extern const u16 kallsyms_token_index[] __attribute__((weak));
extern const unsigned long kallsyms_markers[]; extern const unsigned long kallsyms_markers[] __attribute__((weak));
static inline int is_kernel_inittext(unsigned long addr) static inline int is_kernel_inittext(unsigned long addr)
{ {
@ -167,6 +168,9 @@ static unsigned long get_symbol_pos(unsigned long addr,
unsigned long symbol_start = 0, symbol_end = 0; unsigned long symbol_start = 0, symbol_end = 0;
unsigned long i, low, high, mid; unsigned long i, low, high, mid;
/* This kernel should never had been booted. */
BUG_ON(!kallsyms_addresses);
/* do a binary search on the sorted kallsyms_addresses array */ /* do a binary search on the sorted kallsyms_addresses array */
low = 0; low = 0;
high = kallsyms_num_syms; high = kallsyms_num_syms;

55
scripts/Makefile.build
View File

@ -151,16 +151,16 @@ cmd_cc_i_c = $(CPP) $(c_flags) -o $@ $<
$(obj)/%.i: $(src)/%.c FORCE $(obj)/%.i: $(src)/%.c FORCE
$(call if_changed_dep,cc_i_c) $(call if_changed_dep,cc_i_c)
cmd_genksyms = \ cmd_gensymtypes = \
$(CPP) -D__GENKSYMS__ $(c_flags) $< | \ $(CPP) -D__GENKSYMS__ $(c_flags) $< | \
$(GENKSYMS) -T $@ -A -a $(ARCH) \ $(GENKSYMS) -T $@ -a $(ARCH) \
$(if $(KBUILD_PRESERVE),-p) \ $(if $(KBUILD_PRESERVE),-p) \
$(if $(1),-r $(firstword $(wildcard $(@:.symtypes=.symref) /dev/null))) $(if $(1),-r $(firstword $(wildcard $(@:.symtypes=.symref) /dev/null)))
quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@ quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@
cmd_cc_symtypes_c = \ cmd_cc_symtypes_c = \
set -e; \ set -e; \
$(call cmd_genksyms, true) >/dev/null; \ $(call cmd_gensymtypes, true) >/dev/null; \
test -s $@ || rm -f $@ test -s $@ || rm -f $@
$(obj)/%.symtypes : $(src)/%.c FORCE $(obj)/%.symtypes : $(src)/%.c FORCE
@ -177,38 +177,28 @@ cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
else else
# When module versioning is enabled the following steps are executed: # When module versioning is enabled the following steps are executed:
# o compile a .tmp_<file>.s from <file>.c # o compile a .tmp_<file>.o from <file>.c
# o if .tmp_<file>.s doesn't contain a __ksymtab version, i.e. does # o if .tmp_<file>.o doesn't contain a __ksymtab version, i.e. does
# not export symbols, we just assemble .tmp_<file>.s to <file>.o and # not export symbols, we just rename .tmp_<file>.o to <file>.o and
# are done. # are done.
# o otherwise, we calculate symbol versions using the good old # o otherwise, we calculate symbol versions using the good old
# genksyms on the preprocessed source and postprocess them in a way # genksyms on the preprocessed source and postprocess them in a way
# that they are usable as assembly source # that they are usable as a linker script
# o assemble <file>.o from .tmp_<file>.s forcing inclusion of directives # o generate <file>.o from .tmp_<file>.o using the linker to
# defining the actual values of __crc_*, followed by objcopy-ing them # replace the unresolved symbols __crc_exported_symbol with
# to force these symbols to be local to permit stripping them later. # the actual value of the checksum generated by genksyms
s_file = $(@D)/.tmp_$(@F:.o=.s)
v_file = $(@D)/.tmp_$(@F:.o=.v)
tmp_o_file = $(@D)/.tmp_$(@F)
no_g_c_flags = $(filter-out -g%,$(c_flags))
cmd_cc_o_c = $(CC) $(c_flags) -S -o $(s_file) $<
cmd_cc_o_c = $(CC) $(c_flags) -c -o $(@D)/.tmp_$(@F) $<
cmd_modversions = \ cmd_modversions = \
if grep -q __ksymtab $(s_file); then \ if $(OBJDUMP) -h $(@D)/.tmp_$(@F) | grep -q __ksymtab; then \
if $(call cmd_genksyms, $(KBUILD_SYMTYPES)) > $(v_file) \ $(call cmd_gensymtypes, $(KBUILD_SYMTYPES)) \
&& $(CC) $(no_g_c_flags) -c -Wa,$(v_file) \ > $(@D)/.tmp_$(@F:.o=.ver); \
-o $(tmp_o_file) $(s_file) \ \
&& $(OBJCOPY) -L '__crc_*' -L '___crc_*' -w \ $(LD) $(LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F) \
$(tmp_o_file) $@; \ -T $(@D)/.tmp_$(@F:.o=.ver); \
then \ rm -f $(@D)/.tmp_$(@F) $(@D)/.tmp_$(@F:.o=.ver); \
: ; \
else \
rm -f $@; exit 1; \
fi; \
else \ else \
rm -f $(v_file); \ mv -f $(@D)/.tmp_$(@F) $@; \
$(CC) $(no_g_c_flags) -c -o $@ $(s_file); \
fi; fi;
endif endif
@ -225,12 +215,7 @@ define rule_cc_o_c
$(cmd_record_mcount) \ $(cmd_record_mcount) \
scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' > \ scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' > \
$(dot-target).tmp; \ $(dot-target).tmp; \
if [ -r $(@D)/.tmp_$(@F:.o=.v) ]; then \ rm -f $(depfile); \
echo >> $(dot-target).tmp; \
echo '$@: $(GENKSYMS)' >> $(dot-target).tmp; \
echo '$(GENKSYMS):: ;' >> $(dot-target).tmp; \
fi; \
rm -f $(depfile) $(@D)/.tmp_$(@F:.o=.?); \
mv -f $(dot-target).tmp $(dot-target).cmd mv -f $(dot-target).tmp $(dot-target).cmd
endef endef

3
scripts/Makefile.modinst
View File

@ -17,8 +17,7 @@ __modinst: $(modules)
@: @:
quiet_cmd_modules_install = INSTALL $@ quiet_cmd_modules_install = INSTALL $@
cmd_modules_install = mkdir -p $(2); \ cmd_modules_install = mkdir -p $(2); cp $@ $(2) ; $(mod_strip_cmd) $(2)/$(notdir $@)
$(mod_strip_cmd) $@ $(2)/$(notdir $@) || cp $@ $(2)
# Modules built outside the kernel source tree go into extra by default # Modules built outside the kernel source tree go into extra by default
INSTALL_MOD_DIR ?= extra INSTALL_MOD_DIR ?= extra

21
scripts/genksyms/genksyms.c
View File

@ -43,7 +43,7 @@ int cur_line = 1;
char *cur_filename; char *cur_filename;
static int flag_debug, flag_dump_defs, flag_reference, flag_dump_types, static int flag_debug, flag_dump_defs, flag_reference, flag_dump_types,
flag_preserve, flag_warnings, flag_asm; flag_preserve, flag_warnings;
static const char *arch = ""; static const char *arch = "";
static const char *mod_prefix = ""; static const char *mod_prefix = "";
@ -610,11 +610,8 @@ void export_symbol(const char *name)
if (flag_dump_defs) if (flag_dump_defs)
fputs(">\n", debugfile); fputs(">\n", debugfile);
/* Used as assembly source or a linker script. */ /* Used as a linker script. */
printf(flag_asm printf("%s__crc_%s = 0x%08lx ;\n", mod_prefix, name, crc);
? ".equiv %s__crc_%s, %#08lx\n"
: "%s__crc_%s = %#08lx ;\n",
mod_prefix, name, crc);
} }
} }
@ -651,10 +648,9 @@ void error_with_pos(const char *fmt, ...)
static void genksyms_usage(void) static void genksyms_usage(void)
{ {
fputs("Usage:\n" "genksyms [-aAdDTwqhV] > /path/to/.tmp_obj.ver\n" "\n" fputs("Usage:\n" "genksyms [-adDTwqhV] > /path/to/.tmp_obj.ver\n" "\n"
#ifdef __GNU_LIBRARY__ #ifdef __GNU_LIBRARY__
" -a, --arch Select architecture\n" " -a, --arch Select architecture\n"
" -A, --asm Generate assembly rather than linker script\n"
" -d, --debug Increment the debug level (repeatable)\n" " -d, --debug Increment the debug level (repeatable)\n"
" -D, --dump Dump expanded symbol defs (for debugging only)\n" " -D, --dump Dump expanded symbol defs (for debugging only)\n"
" -r, --reference file Read reference symbols from a file\n" " -r, --reference file Read reference symbols from a file\n"
@ -666,7 +662,6 @@ static void genksyms_usage(void)
" -V, --version Print the release version\n" " -V, --version Print the release version\n"
#else /* __GNU_LIBRARY__ */ #else /* __GNU_LIBRARY__ */
" -a Select architecture\n" " -a Select architecture\n"
" -A Generate assembly rather than linker script\n"
" -d Increment the debug level (repeatable)\n" " -d Increment the debug level (repeatable)\n"
" -D Dump expanded symbol defs (for debugging only)\n" " -D Dump expanded symbol defs (for debugging only)\n"
" -r file Read reference symbols from a file\n" " -r file Read reference symbols from a file\n"
@ -688,7 +683,6 @@ int main(int argc, char **argv)
#ifdef __GNU_LIBRARY__ #ifdef __GNU_LIBRARY__
struct option long_opts[] = { struct option long_opts[] = {
{"arch", 1, 0, 'a'}, {"arch", 1, 0, 'a'},
{"asm", 0, 0, 'A'},
{"debug", 0, 0, 'd'}, {"debug", 0, 0, 'd'},
{"warnings", 0, 0, 'w'}, {"warnings", 0, 0, 'w'},
{"quiet", 0, 0, 'q'}, {"quiet", 0, 0, 'q'},
@ -701,10 +695,10 @@ int main(int argc, char **argv)
{0, 0, 0, 0} {0, 0, 0, 0}
}; };
while ((o = getopt_long(argc, argv, "a:dwqVADr:T:ph", while ((o = getopt_long(argc, argv, "a:dwqVDr:T:ph",
&long_opts[0], NULL)) != EOF) &long_opts[0], NULL)) != EOF)
#else /* __GNU_LIBRARY__ */ #else /* __GNU_LIBRARY__ */
while ((o = getopt(argc, argv, "a:dwqVADr:T:ph")) != EOF) while ((o = getopt(argc, argv, "a:dwqVDr:T:ph")) != EOF)
#endif /* __GNU_LIBRARY__ */ #endif /* __GNU_LIBRARY__ */
switch (o) { switch (o) {
case 'a': case 'a':
@ -722,9 +716,6 @@ int main(int argc, char **argv)
case 'V': case 'V':
fputs("genksyms version 2.5.60\n", stderr); fputs("genksyms version 2.5.60\n", stderr);
break; break;
case 'A':
flag_asm = 1;
break;
case 'D': case 'D':
flag_dump_defs = 1; flag_dump_defs = 1;
break; break;

219
scripts/genksyms/keywords.c_shipped
View File

@ -1,4 +1,4 @@
/* ANSI-C code produced by gperf version 3.0.1 */ /* ANSI-C code produced by gperf version 3.0.2 */
/* Command-line: gperf -L ANSI-C -a -C -E -g -H is_reserved_hash -k '1,3,$' -N is_reserved_word -p -t scripts/genksyms/keywords.gperf */ /* Command-line: gperf -L ANSI-C -a -C -E -g -H is_reserved_hash -k '1,3,$' -N is_reserved_word -p -t scripts/genksyms/keywords.gperf */
#if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \ #if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
@ -32,7 +32,7 @@
#line 3 "scripts/genksyms/keywords.gperf" #line 3 "scripts/genksyms/keywords.gperf"
struct resword { const char *name; int token; }; struct resword { const char *name; int token; };
/* maximum key range = 64, duplicates = 0 */ /* maximum key range = 62, duplicates = 0 */
#ifdef __GNUC__ #ifdef __GNUC__
__inline __inline
@ -46,32 +46,32 @@ is_reserved_hash (register const char *str, register unsigned int len)
{ {
static const unsigned char asso_values[] = static const unsigned char asso_values[] =
{ {
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 0, 65, 65, 65, 65, 65, 65, 65, 65, 65, 5,
67, 67, 67, 67, 67, 67, 15, 67, 67, 67, 65, 65, 65, 65, 65, 65, 35, 65, 65, 65,
0, 67, 67, 67, 67, 67, 67, 67, 67, 67, 0, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 0, 67, 0, 67, 5, 65, 65, 65, 65, 65, 0, 65, 0, 65, 5,
25, 20, 15, 30, 67, 15, 67, 67, 10, 0, 20, 15, 10, 30, 65, 15, 65, 65, 20, 0,
10, 40, 20, 67, 10, 5, 0, 10, 15, 67, 10, 35, 20, 65, 10, 5, 0, 10, 5, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67, 67, 67, 67, 67, 65, 65, 65, 65, 65, 65, 65, 65, 65, 65,
67, 67, 67, 67, 67, 67 65, 65, 65, 65, 65, 65
}; };
return len + asso_values[(unsigned char)str[2]] + asso_values[(unsigned char)str[0]] + asso_values[(unsigned char)str[len - 1]]; return len + asso_values[(unsigned char)str[2]] + asso_values[(unsigned char)str[0]] + asso_values[(unsigned char)str[len - 1]];
} }
@ -84,119 +84,116 @@ is_reserved_word (register const char *str, register unsigned int len)
{ {
enum enum
{ {
TOTAL_KEYWORDS = 45, TOTAL_KEYWORDS = 43,
MIN_WORD_LENGTH = 3, MIN_WORD_LENGTH = 3,
MAX_WORD_LENGTH = 24, MAX_WORD_LENGTH = 24,
MIN_HASH_VALUE = 3, MIN_HASH_VALUE = 3,
MAX_HASH_VALUE = 66 MAX_HASH_VALUE = 64
}; };
static const struct resword wordlist[] = static const struct resword wordlist[] =
{ {
{""}, {""}, {""}, {""}, {""}, {""},
#line 28 "scripts/genksyms/keywords.gperf" #line 26 "scripts/genksyms/keywords.gperf"
{"asm", ASM_KEYW}, {"asm", ASM_KEYW},
{""}, {""},
#line 10 "scripts/genksyms/keywords.gperf" #line 8 "scripts/genksyms/keywords.gperf"
{"__asm", ASM_KEYW}, {"__asm", ASM_KEYW},
{""}, {""},
#line 11 "scripts/genksyms/keywords.gperf" #line 9 "scripts/genksyms/keywords.gperf"
{"__asm__", ASM_KEYW}, {"__asm__", ASM_KEYW},
{""}, {""}, {""}, {""},
#line 54 "scripts/genksyms/keywords.gperf" #line 52 "scripts/genksyms/keywords.gperf"
{"__typeof__", TYPEOF_KEYW}, {"__typeof__", TYPEOF_KEYW},
{""}, {""},
#line 14 "scripts/genksyms/keywords.gperf"
{"__const", CONST_KEYW},
#line 13 "scripts/genksyms/keywords.gperf"
{"__attribute__", ATTRIBUTE_KEYW},
#line 15 "scripts/genksyms/keywords.gperf"
{"__const__", CONST_KEYW},
#line 20 "scripts/genksyms/keywords.gperf"
{"__signed__", SIGNED_KEYW},
#line 46 "scripts/genksyms/keywords.gperf"
{"static", STATIC_KEYW},
{""},
#line 41 "scripts/genksyms/keywords.gperf"
{"int", INT_KEYW},
#line 34 "scripts/genksyms/keywords.gperf"
{"char", CHAR_KEYW},
#line 35 "scripts/genksyms/keywords.gperf"
{"const", CONST_KEYW},
#line 47 "scripts/genksyms/keywords.gperf"
{"struct", STRUCT_KEYW},
#line 26 "scripts/genksyms/keywords.gperf"
{"__restrict__", RESTRICT_KEYW},
#line 27 "scripts/genksyms/keywords.gperf"
{"restrict", RESTRICT_KEYW},
#line 7 "scripts/genksyms/keywords.gperf"
{"EXPORT_SYMBOL_GPL_FUTURE", EXPORT_SYMBOL_KEYW},
#line 18 "scripts/genksyms/keywords.gperf"
{"__inline__", INLINE_KEYW},
{""},
#line 22 "scripts/genksyms/keywords.gperf"
{"__volatile__", VOLATILE_KEYW},
#line 5 "scripts/genksyms/keywords.gperf"
{"EXPORT_SYMBOL", EXPORT_SYMBOL_KEYW},
#line 25 "scripts/genksyms/keywords.gperf"
{"_restrict", RESTRICT_KEYW},
{""},
#line 12 "scripts/genksyms/keywords.gperf" #line 12 "scripts/genksyms/keywords.gperf"
{"__attribute", ATTRIBUTE_KEYW}, {"__const", CONST_KEYW},
#line 6 "scripts/genksyms/keywords.gperf" #line 11 "scripts/genksyms/keywords.gperf"
{"EXPORT_SYMBOL_GPL", EXPORT_SYMBOL_KEYW}, {"__attribute__", ATTRIBUTE_KEYW},
#line 13 "scripts/genksyms/keywords.gperf"
{"__const__", CONST_KEYW},
#line 18 "scripts/genksyms/keywords.gperf"
{"__signed__", SIGNED_KEYW},
#line 44 "scripts/genksyms/keywords.gperf"
{"static", STATIC_KEYW},
#line 20 "scripts/genksyms/keywords.gperf"
{"__volatile__", VOLATILE_KEYW},
#line 39 "scripts/genksyms/keywords.gperf"
{"int", INT_KEYW},
#line 32 "scripts/genksyms/keywords.gperf"
{"char", CHAR_KEYW},
#line 33 "scripts/genksyms/keywords.gperf"
{"const", CONST_KEYW},
#line 45 "scripts/genksyms/keywords.gperf"
{"struct", STRUCT_KEYW},
#line 24 "scripts/genksyms/keywords.gperf"
{"__restrict__", RESTRICT_KEYW},
#line 25 "scripts/genksyms/keywords.gperf"
{"restrict", RESTRICT_KEYW},
#line 23 "scripts/genksyms/keywords.gperf"
{"_restrict", RESTRICT_KEYW},
#line 16 "scripts/genksyms/keywords.gperf" #line 16 "scripts/genksyms/keywords.gperf"
{"__inline__", INLINE_KEYW},
#line 10 "scripts/genksyms/keywords.gperf"
{"__attribute", ATTRIBUTE_KEYW},
{""},
#line 14 "scripts/genksyms/keywords.gperf"
{"__extension__", EXTENSION_KEYW}, {"__extension__", EXTENSION_KEYW},
#line 37 "scripts/genksyms/keywords.gperf" #line 35 "scripts/genksyms/keywords.gperf"
{"enum", ENUM_KEYW}, {"enum", ENUM_KEYW},
#line 8 "scripts/genksyms/keywords.gperf" #line 19 "scripts/genksyms/keywords.gperf"
{"EXPORT_UNUSED_SYMBOL", EXPORT_SYMBOL_KEYW}, {"__volatile", VOLATILE_KEYW},
#line 38 "scripts/genksyms/keywords.gperf" #line 36 "scripts/genksyms/keywords.gperf"
{"extern", EXTERN_KEYW}, {"extern", EXTERN_KEYW},
{""}, {""},
#line 19 "scripts/genksyms/keywords.gperf"
{"__signed", SIGNED_KEYW},
#line 9 "scripts/genksyms/keywords.gperf"
{"EXPORT_UNUSED_SYMBOL_GPL", EXPORT_SYMBOL_KEYW},
#line 49 "scripts/genksyms/keywords.gperf"
{"union", UNION_KEYW},
#line 53 "scripts/genksyms/keywords.gperf"
{"typeof", TYPEOF_KEYW},
#line 48 "scripts/genksyms/keywords.gperf"
{"typedef", TYPEDEF_KEYW},
#line 17 "scripts/genksyms/keywords.gperf" #line 17 "scripts/genksyms/keywords.gperf"
{"__signed", SIGNED_KEYW},
#line 7 "scripts/genksyms/keywords.gperf"
{"EXPORT_SYMBOL_GPL_FUTURE", EXPORT_SYMBOL_KEYW},
{""},
#line 51 "scripts/genksyms/keywords.gperf"
{"typeof", TYPEOF_KEYW},
#line 46 "scripts/genksyms/keywords.gperf"
{"typedef", TYPEDEF_KEYW},
#line 15 "scripts/genksyms/keywords.gperf"
{"__inline", INLINE_KEYW}, {"__inline", INLINE_KEYW},
#line 33 "scripts/genksyms/keywords.gperf" #line 31 "scripts/genksyms/keywords.gperf"
{"auto", AUTO_KEYW}, {"auto", AUTO_KEYW},
#line 21 "scripts/genksyms/keywords.gperf" #line 47 "scripts/genksyms/keywords.gperf"
{"__volatile", VOLATILE_KEYW}, {"union", UNION_KEYW},
{""}, {""},
#line 48 "scripts/genksyms/keywords.gperf"
{"unsigned", UNSIGNED_KEYW},
#line 49 "scripts/genksyms/keywords.gperf"
{"void", VOID_KEYW},
#line 42 "scripts/genksyms/keywords.gperf"
{"short", SHORT_KEYW},
{""}, {""}, {""}, {""},
#line 50 "scripts/genksyms/keywords.gperf" #line 50 "scripts/genksyms/keywords.gperf"
{"unsigned", UNSIGNED_KEYW},
{""},
#line 44 "scripts/genksyms/keywords.gperf"
{"short", SHORT_KEYW},
#line 40 "scripts/genksyms/keywords.gperf"
{"inline", INLINE_KEYW},
{""},
#line 52 "scripts/genksyms/keywords.gperf"
{"volatile", VOLATILE_KEYW}, {"volatile", VOLATILE_KEYW},
#line 42 "scripts/genksyms/keywords.gperf" {""},
{"long", LONG_KEYW}, #line 37 "scripts/genksyms/keywords.gperf"
#line 24 "scripts/genksyms/keywords.gperf"
{"_Bool", BOOL_KEYW},
{""}, {""},
#line 43 "scripts/genksyms/keywords.gperf"
{"register", REGISTER_KEYW},
#line 51 "scripts/genksyms/keywords.gperf"
{"void", VOID_KEYW},
#line 39 "scripts/genksyms/keywords.gperf"
{"float", FLOAT_KEYW}, {"float", FLOAT_KEYW},
#line 36 "scripts/genksyms/keywords.gperf" #line 34 "scripts/genksyms/keywords.gperf"
{"double", DOUBLE_KEYW}, {"double", DOUBLE_KEYW},
{""}, {""}, {""}, {""}, {""},
#line 45 "scripts/genksyms/keywords.gperf" #line 5 "scripts/genksyms/keywords.gperf"
{"signed", SIGNED_KEYW} {"EXPORT_SYMBOL", EXPORT_SYMBOL_KEYW},
{""}, {""},
#line 38 "scripts/genksyms/keywords.gperf"
{"inline", INLINE_KEYW},
#line 6 "scripts/genksyms/keywords.gperf"
{"EXPORT_SYMBOL_GPL", EXPORT_SYMBOL_KEYW},
#line 41 "scripts/genksyms/keywords.gperf"
{"register", REGISTER_KEYW},
{""},
#line 22 "scripts/genksyms/keywords.gperf"
{"_Bool", BOOL_KEYW},
#line 43 "scripts/genksyms/keywords.gperf"
{"signed", SIGNED_KEYW},
{""}, {""},
#line 40 "scripts/genksyms/keywords.gperf"
{"long", LONG_KEYW}
}; };
if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH) if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)

2
scripts/genksyms/keywords.gperf
View File

@ -5,8 +5,6 @@ struct resword { const char *name; int token; }
EXPORT_SYMBOL, EXPORT_SYMBOL_KEYW EXPORT_SYMBOL, EXPORT_SYMBOL_KEYW
EXPORT_SYMBOL_GPL, EXPORT_SYMBOL_KEYW EXPORT_SYMBOL_GPL, EXPORT_SYMBOL_KEYW
EXPORT_SYMBOL_GPL_FUTURE, EXPORT_SYMBOL_KEYW EXPORT_SYMBOL_GPL_FUTURE, EXPORT_SYMBOL_KEYW
EXPORT_UNUSED_SYMBOL, EXPORT_SYMBOL_KEYW
EXPORT_UNUSED_SYMBOL_GPL, EXPORT_SYMBOL_KEYW
__asm, ASM_KEYW __asm, ASM_KEYW
__asm__, ASM_KEYW __asm__, ASM_KEYW
__attribute, ATTRIBUTE_KEYW __attribute, ATTRIBUTE_KEYW

21
scripts/kallsyms.c
View File

@ -130,9 +130,18 @@ static int read_symbol(FILE *in, struct sym_entry *s)
static int symbol_valid(struct sym_entry *s) static int symbol_valid(struct sym_entry *s)
{ {
/* Symbols which vary between passes. Passes 1 and 2 must have /* Symbols which vary between passes. Passes 1 and 2 must have
* identical symbol lists. * identical symbol lists. The kallsyms_* symbols below are only added
* after pass 1, they would be included in pass 2 when --all-symbols is
* specified so exclude them to get a stable symbol list.
*/ */
static char *special_symbols[] = { static char *special_symbols[] = {
"kallsyms_addresses",
"kallsyms_num_syms",
"kallsyms_names",
"kallsyms_markers",
"kallsyms_token_table",
"kallsyms_token_index",
/* Exclude linker generated symbols which vary between passes */ /* Exclude linker generated symbols which vary between passes */
"_SDA_BASE_", /* ppc */ "_SDA_BASE_", /* ppc */
"_SDA2_BASE_", /* ppc */ "_SDA2_BASE_", /* ppc */
@ -164,9 +173,7 @@ static int symbol_valid(struct sym_entry *s)
} }
/* Exclude symbols which vary between passes. */ /* Exclude symbols which vary between passes. */
if (strstr((char *)s->sym + offset, "_compiled.") || if (strstr((char *)s->sym + offset, "_compiled."))
strncmp((char*)s->sym + offset, "__compound_literal.", 19) == 0 ||
strncmp((char*)s->sym + offset, "__compound_literal$", 19) == 0)
return 0; return 0;
for (i = 0; special_symbols[i]; i++) for (i = 0; special_symbols[i]; i++)
@ -543,10 +550,8 @@ int main(int argc, char **argv)
usage(); usage();
read_map(stdin); read_map(stdin);
if (table_cnt) { sort_symbols();
sort_symbols(); optimize_token_table();
optimize_token_table();
}
write_src(); write_src();
return 0; return 0;

7
scripts/mksysmap
View File

@ -37,6 +37,9 @@
# readprofile starts reading symbols when _stext is found, and # readprofile starts reading symbols when _stext is found, and
# continue until it finds a symbol which is not either of 'T', 't', # continue until it finds a symbol which is not either of 'T', 't',
# 'W' or 'w'. # 'W' or 'w'. __crc_ are 'A' and placed in the middle
# so we just ignore them to let readprofile continue to work.
# (At least sparc64 has __crc_ in the middle).
$NM -n $1 | grep -v '\( [aNUw] \)\|\(__crc_\)\|\( \$[adt]\)' > $2
$NM -n $1 | grep -v '\( [aNUw] \)\|\( \$[adt]\)' > $2

22
scripts/strip-symbols
View File

@ -1,22 +0,0 @@
<*>
*.h
__compound_literal[$.][0-9]*
__crc_[a-zA-Z_]*
__exitcall_[a-zA-Z_]*
__func__[$.][0-9]*
__FUNCTION__[$.][0-9]*
gcc[0-9]_compiled[$.]
__initcall_[a-zA-Z_]*
__kcrctab_[a-zA-Z_]*
__kstrtab_[a-zA-Z_]*
__ksymtab_[a-zA-Z_]*
__mod_[a-zA-Z_]*[0-9]
__module_depends
__param_[a-zA-Z_]*
__pci_fixup_*PCI_ANY_IDPCI_ANY_ID*
__pci_fixup_*PCI_ANY_IDPCI_DEVICE_ID_*
__pci_fixup_*PCI_VENDOR_ID_*PCI_ANY_ID*
__pci_fixup_*PCI_VENDOR_ID_*PCI_DEVICE_ID_*
__PRETTY_FUNCTION__[$.][0-9]*
__setup_[a-zA-Z_]*
____versions