Commit 8715ee75 authored by Linus Torvalds's avatar Linus Torvalds

Merge tag 'kbuild-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - improve fixdep to coalesce consecutive slashes in dep-files

 - fix some issues of the maintainer string generation in deb-pkg script

 - remove unused CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX and clean-up
   several tools and linker scripts

 - clean-up modpost

 - allow to enable the dead code/data elimination for PowerPC in EXPERT
   mode

 - improve two coccinelle scripts for better performance

 - pass endianness and machine size flags to sparse for all architecture

 - misc fixes

* tag 'kbuild-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (25 commits)
  kbuild: add machine size to CHECKFLAGS
  kbuild: add endianness flag to CHEKCFLAGS
  kbuild: $(CHECK) doesnt need NOSTDINC_FLAGS twice
  scripts: Fixed printf format mismatch
  scripts/tags.sh: use `find` for $ALLSOURCE_ARCHS generation
  coccinelle: deref_null: improve performance
  coccinelle: mini_lock: improve performance
  powerpc: Allow LD_DEAD_CODE_DATA_ELIMINATION to be selected
  kbuild: Allow LD_DEAD_CODE_DATA_ELIMINATION to be selectable if enabled
  kbuild: LD_DEAD_CODE_DATA_ELIMINATION no -ffunction-sections/-fdata-sections for module build
  kbuild: Fix asm-generic/vmlinux.lds.h for LD_DEAD_CODE_DATA_ELIMINATION
  modpost: constify *modname function argument where possible
  modpost: remove redundant is_vmlinux() test
  modpost: use strstarts() helper more widely
  modpost: pass struct elf_info pointer to get_modinfo()
  checkpatch: remove VMLINUX_SYMBOL() check
  vmlinux.lds.h: remove no-op macro VMLINUX_SYMBOL()
  kbuild: remove CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX
  export.h: remove code for prefixing symbols with underscore
  depmod.sh: remove symbol prefix support
  ...
parents 126f7051 1f2f01b1
......@@ -802,13 +802,12 @@ KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
endif
ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
KBUILD_CFLAGS += $(call cc-option,-ffunction-sections,)
KBUILD_CFLAGS += $(call cc-option,-fdata-sections,)
KBUILD_CFLAGS_KERNEL += $(call cc-option,-ffunction-sections,)
KBUILD_CFLAGS_KERNEL += $(call cc-option,-fdata-sections,)
endif
# arch Makefile may override CC so keep this after arch Makefile is included
NOSTDINC_FLAGS += -nostdinc -isystem $(call shell-cached,$(CC) -print-file-name=include)
CHECKFLAGS += $(NOSTDINC_FLAGS)
# warn about C99 declaration after statement
KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
......@@ -878,6 +877,12 @@ ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
LDFLAGS_vmlinux += $(call ld-option, -X,)
endif
# insure the checker run with the right endianness
CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian)
# the checker needs the correct machine size
CHECKFLAGS += $(if $(CONFIG_64BIT),-m64,-m32)
# Default kernel image to build when no specific target is given.
# KBUILD_IMAGE may be overruled on the command line or
# set in the environment
......@@ -1763,7 +1768,7 @@ quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))
# Run depmod only if we have System.map and depmod is executable
quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
$(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))"
$(KERNELRELEASE)
# Create temporary dir for module support files
# clean it up only when building all modules
......
......@@ -597,21 +597,6 @@ config CC_STACKPROTECTOR_AUTO
endchoice
config LD_DEAD_CODE_DATA_ELIMINATION
bool
help
Select this if the architecture wants to do dead code and
data elimination with the linker by compiling with
-ffunction-sections -fdata-sections and linking with
--gc-sections.
This requires that the arch annotates or otherwise protects
its external entry points from being discarded. Linker scripts
must also merge .text.*, .data.*, and .bss.* correctly into
output sections. Care must be taken not to pull in unrelated
sections (e.g., '.text.init'). Typically '.' in section names
is used to distinguish them from label names / C identifiers.
config HAVE_ARCH_WITHIN_STACK_FRAMES
bool
help
......@@ -687,12 +672,6 @@ config MODULES_USE_ELF_REL
Modules only use ELF REL relocations. Modules with ELF RELA
relocations will give an error.
config HAVE_UNDERSCORE_SYMBOL_PREFIX
bool
help
Some architectures generate an _ in front of C symbols; things like
module loading and assembly files need to know about this.
config HAVE_IRQ_EXIT_ON_IRQ_STACK
bool
help
......
......@@ -11,7 +11,7 @@
NM := $(NM) -B
LDFLAGS_vmlinux := -static -N #-relax
CHECKFLAGS += -D__alpha__ -m64
CHECKFLAGS += -D__alpha__
cflags-y := -pipe -mno-fp-regs -ffixed-8
cflags-y += $(call cc-option, -fno-jump-tables)
......
......@@ -135,7 +135,7 @@ endif
KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
CHECKFLAGS += -D__arm__ -m32
CHECKFLAGS += -D__arm__
#Default value
head-y := arch/arm/kernel/head$(MMUEXT).o
......
......@@ -78,7 +78,7 @@ LDFLAGS += -maarch64linux
UTS_MACHINE := aarch64
endif
CHECKFLAGS += -D__aarch64__ -m64
CHECKFLAGS += -D__aarch64__
ifeq ($(CONFIG_ARM64_MODULE_PLTS),y)
KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/arm64/kernel/module.lds
......
......@@ -18,7 +18,7 @@ READELF := $(CROSS_COMPILE)readelf
export AWK
CHECKFLAGS += -m64 -D__ia64=1 -D__ia64__=1 -D_LP64 -D__LP64__
CHECKFLAGS += -D__ia64=1 -D__ia64__=1 -D_LP64 -D__LP64__
OBJCOPYFLAGS := --strip-all
LDFLAGS_vmlinux := -static
......
......@@ -309,9 +309,6 @@ ifdef CONFIG_MIPS
CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
ifdef CONFIG_64BIT
CHECKFLAGS += -m64
endif
endif
OBJCOPYFLAGS += --remove-section=.reginfo
......
......@@ -25,7 +25,6 @@ LDFLAGS_vmlinux :=
LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
KBUILD_CFLAGS += -pipe -ffixed-r10 -D__linux__
CHECKFLAGS += -mbig-endian
ifeq ($(CONFIG_OPENRISC_HAVE_INST_MUL),y)
KBUILD_CFLAGS += $(call cc-option,-mhard-mul)
......
......@@ -22,13 +22,13 @@ KBUILD_IMAGE := vmlinuz
KBUILD_DEFCONFIG := default_defconfig
NM = sh $(srctree)/arch/parisc/nm
CHECKFLAGS += -D__hppa__=1 -mbig-endian
CHECKFLAGS += -D__hppa__=1
LIBGCC = $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
export LIBGCC
ifdef CONFIG_64BIT
UTS_MACHINE := parisc64
CHECKFLAGS += -D__LP64__=1 -m64
CHECKFLAGS += -D__LP64__=1
CC_ARCHES = hppa64
LD_BFD := elf64-hppa-linux
else # 32-bit
......
......@@ -198,6 +198,7 @@ config PPC
select HAVE_KPROBES
select HAVE_KPROBES_ON_FTRACE
select HAVE_KRETPROBES
select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS
select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
......
......@@ -89,7 +89,7 @@ SECTIONS
*/
.text BLOCK(0) : AT(ADDR(.text) - LOAD_OFFSET) {
#ifdef CONFIG_LD_HEAD_STUB_CATCH
*(.linker_stub_catch);
KEEP(*(.linker_stub_catch));
. = . ;
#endif
......@@ -98,7 +98,7 @@ SECTIONS
ALIGN_FUNCTION();
#endif
/* careful! __ftr_alt_* sections need to be close to .text */
*(.text.hot .text .text.fixup .text.unlikely .fixup __ftr_alt_* .ref.text);
*(.text.hot TEXT_MAIN .text.fixup .text.unlikely .fixup __ftr_alt_* .ref.text);
SCHED_TEXT
CPUIDLE_TEXT
LOCK_TEXT
......@@ -184,10 +184,10 @@ SECTIONS
.init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
INIT_DATA
__vtop_table_begin = .;
*(.vtop_fixup);
KEEP(*(.vtop_fixup));
__vtop_table_end = .;
__ptov_table_begin = .;
*(.ptov_fixup);
KEEP(*(.ptov_fixup));
__ptov_table_end = .;
}
......@@ -208,26 +208,26 @@ SECTIONS
. = ALIGN(8);
__ftr_fixup : AT(ADDR(__ftr_fixup) - LOAD_OFFSET) {
__start___ftr_fixup = .;
*(__ftr_fixup)
KEEP(*(__ftr_fixup))
__stop___ftr_fixup = .;
}
. = ALIGN(8);
__mmu_ftr_fixup : AT(ADDR(__mmu_ftr_fixup) - LOAD_OFFSET) {
__start___mmu_ftr_fixup = .;
*(__mmu_ftr_fixup)
KEEP(*(__mmu_ftr_fixup))
__stop___mmu_ftr_fixup = .;
}
. = ALIGN(8);
__lwsync_fixup : AT(ADDR(__lwsync_fixup) - LOAD_OFFSET) {
__start___lwsync_fixup = .;
*(__lwsync_fixup)
KEEP(*(__lwsync_fixup))
__stop___lwsync_fixup = .;
}
#ifdef CONFIG_PPC64
. = ALIGN(8);
__fw_ftr_fixup : AT(ADDR(__fw_ftr_fixup) - LOAD_OFFSET) {
__start___fw_ftr_fixup = .;
*(__fw_ftr_fixup)
KEEP(*(__fw_ftr_fixup))
__stop___fw_ftr_fixup = .;
}
#endif
......@@ -240,7 +240,7 @@ SECTIONS
. = ALIGN(8);
.machine.desc : AT(ADDR(.machine.desc) - LOAD_OFFSET) {
__machine_desc_start = . ;
*(.machine.desc)
KEEP(*(.machine.desc))
__machine_desc_end = . ;
}
#ifdef CONFIG_RELOCATABLE
......@@ -288,7 +288,7 @@ SECTIONS
.data : AT(ADDR(.data) - LOAD_OFFSET) {
DATA_DATA
*(.data.rel*)
*(.sdata)
*(SDATA_MAIN)
*(.sdata2)
*(.got.plt) *(.got)
*(.plt)
......@@ -303,7 +303,7 @@ SECTIONS
.opd : AT(ADDR(.opd) - LOAD_OFFSET) {
__start_opd = .;
*(.opd)
KEEP(*(.opd))
__end_opd = .;
}
......
......@@ -18,7 +18,7 @@ KBUILD_CFLAGS += -m64
KBUILD_AFLAGS += -m64
UTS_MACHINE := s390x
STACK_SIZE := 16384
CHECKFLAGS += -D__s390__ -D__s390x__ -mbig-endian
CHECKFLAGS += -D__s390__ -D__s390x__
export LD_BFD
......
......@@ -39,7 +39,7 @@ else
# sparc64
#
CHECKFLAGS += -D__sparc__ -D__sparc_v9__ -D__arch64__ -m64
CHECKFLAGS += -D__sparc__ -D__sparc_v9__ -D__arch64__
LDFLAGS := -m elf64_sparc
export BITS := 64
UTS_MACHINE := sparc64
......
......@@ -94,7 +94,7 @@ ifeq ($(CONFIG_X86_32),y)
else
BITS := 64
UTS_MACHINE := x86_64
CHECKFLAGS += -D__x86_64__ -m64
CHECKFLAGS += -D__x86_64__
biarch := -m64
KBUILD_AFLAGS += -m64
......
......@@ -19,42 +19,32 @@
#define KCRC_ALIGN 4
#endif
#ifdef CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX
#define KSYM(name) _##name
#else
#define KSYM(name) name
#endif
/*
* note on .section use: @progbits vs %progbits nastiness doesn't matter,
* since we immediately emit into those sections anyway.
*/
.macro ___EXPORT_SYMBOL name,val,sec
#ifdef CONFIG_MODULES
.globl KSYM(__ksymtab_\name)
.globl __ksymtab_\name
.section ___ksymtab\sec+\name,"a"
.balign KSYM_ALIGN
KSYM(__ksymtab_\name):
__put \val, KSYM(__kstrtab_\name)
__ksymtab_\name:
__put \val, __kstrtab_\name
.previous
.section __ksymtab_strings,"a"
KSYM(__kstrtab_\name):
#ifdef CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX
.asciz "_\name"
#else
__kstrtab_\name:
.asciz "\name"
#endif
.previous
#ifdef CONFIG_MODVERSIONS
.section ___kcrctab\sec+\name,"a"
.balign KCRC_ALIGN
KSYM(__kcrctab_\name):
__kcrctab_\name:
#if defined(CONFIG_MODULE_REL_CRCS)
.long KSYM(__crc_\name) - .
.long __crc_\name - .
#else
.long KSYM(__crc_\name)
.long __crc_\name
#endif
.weak KSYM(__crc_\name)
.weak __crc_\name
.previous
#endif
#endif
......@@ -84,12 +74,12 @@ KSYM(__kcrctab_\name):
#endif
#define EXPORT_SYMBOL(name) \
__EXPORT_SYMBOL(name, KSYM_FUNC(KSYM(name)),)
__EXPORT_SYMBOL(name, KSYM_FUNC(name),)
#define EXPORT_SYMBOL_GPL(name) \
__EXPORT_SYMBOL(name, KSYM_FUNC(KSYM(name)), _gpl)
__EXPORT_SYMBOL(name, KSYM_FUNC(name), _gpl)
#define EXPORT_DATA_SYMBOL(name) \
__EXPORT_SYMBOL(name, KSYM(name),)
__EXPORT_SYMBOL(name, name,)
#define EXPORT_DATA_SYMBOL_GPL(name) \
__EXPORT_SYMBOL(name, KSYM(name),_gpl)
__EXPORT_SYMBOL(name, name,_gpl)
#endif
This diff is collapsed.
......@@ -10,14 +10,8 @@
* hackers place grumpy comments in header files.
*/
/* Some toolchains use a `_' prefix for all user symbols. */
#ifdef CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX
#define __VMLINUX_SYMBOL(x) _##x
#define __VMLINUX_SYMBOL_STR(x) "_" #x
#else
#define __VMLINUX_SYMBOL(x) x
#define __VMLINUX_SYMBOL_STR(x) #x
#endif
/* Indirect, so macros are expanded before pasting. */
#define VMLINUX_SYMBOL(x) __VMLINUX_SYMBOL(x)
......@@ -46,14 +40,14 @@ extern struct module __this_module;
#if defined(CONFIG_MODULE_REL_CRCS)
#define __CRC_SYMBOL(sym, sec) \
asm(" .section \"___kcrctab" sec "+" #sym "\", \"a\" \n" \
" .weak " VMLINUX_SYMBOL_STR(__crc_##sym) " \n" \
" .long " VMLINUX_SYMBOL_STR(__crc_##sym) " - . \n" \
" .weak __crc_" #sym " \n" \
" .long __crc_" #sym " - . \n" \
" .previous \n");
#else
#define __CRC_SYMBOL(sym, sec) \
asm(" .section \"___kcrctab" sec "+" #sym "\", \"a\" \n" \
" .weak " VMLINUX_SYMBOL_STR(__crc_##sym) " \n" \
" .long " VMLINUX_SYMBOL_STR(__crc_##sym) " \n" \
" .weak __crc_" #sym " \n" \
" .long __crc_" #sym " \n" \
" .previous \n");
#endif
#else
......@@ -66,7 +60,7 @@ extern struct module __this_module;
__CRC_SYMBOL(sym, sec) \
static const char __kstrtab_##sym[] \
__attribute__((section("__ksymtab_strings"), aligned(1))) \
= VMLINUX_SYMBOL_STR(sym); \
= #sym; \
static const struct kernel_symbol __ksymtab_##sym \
__used \
__attribute__((section("___ksymtab" sec "+" #sym), used)) \
......
......@@ -1038,6 +1038,33 @@ config CC_OPTIMIZE_FOR_SIZE
endchoice
config HAVE_LD_DEAD_CODE_DATA_ELIMINATION
bool
help
This requires that the arch annotates or otherwise protects
its external entry points from being discarded. Linker scripts
must also merge .text.*, .data.*, and .bss.* correctly into
output sections. Care must be taken not to pull in unrelated
sections (e.g., '.text.init'). Typically '.' in section names
is used to distinguish them from label names / C identifiers.
config LD_DEAD_CODE_DATA_ELIMINATION
bool "Dead code and data elimination (EXPERIMENTAL)"
depends on HAVE_LD_DEAD_CODE_DATA_ELIMINATION
depends on EXPERT
help
Select this if the architecture wants to do dead code and
data elimination with the linker by compiling with
-ffunction-sections -fdata-sections, and linking with
--gc-sections.
This can reduce on disk and in-memory size of the kernel
code and static data, particularly for small configs and
on small systems. This has the possibility of introducing
silently broken kernel if the required annotations are not
present. This option is not well tested yet, so use at your
own risk.
config SYSCTL
bool
......
......@@ -147,7 +147,6 @@ $(obj)/%.i: $(src)/%.c FORCE
cmd_gensymtypes_c = \
$(CPP) -D__GENKSYMS__ $(c_flags) $< | \
$(GENKSYMS) $(if $(1), -T $(2)) \
$(patsubst y,-s _,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX)) \
$(patsubst y,-R,$(CONFIG_MODULE_REL_CRCS)) \
$(if $(KBUILD_PRESERVE),-p) \
-r $(firstword $(wildcard $(2:.symtypes=.symref) /dev/null))
......@@ -355,7 +354,6 @@ cmd_gensymtypes_S = \
sed 's/.*___EXPORT_SYMBOL[[:space:]]*\([a-zA-Z0-9_]*\)[[:space:]]*,.*/EXPORT_SYMBOL(\1);/' ) | \
$(CPP) -D__GENKSYMS__ $(c_flags) -xc - | \
$(GENKSYMS) $(if $(1), -T $(2)) \
$(patsubst y,-s _,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX)) \
$(patsubst y,-R,$(CONFIG_MODULE_REL_CRCS)) \
$(if $(KBUILD_PRESERVE),-p) \
-r $(firstword $(wildcard $(2:.symtypes=.symref) /dev/null))
......@@ -487,15 +485,10 @@ targets += $(lib-target)
dummy-object = $(obj)/.lib_exports.o
ksyms-lds = $(dot-target).lds
ifdef CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX
ref_prefix = EXTERN(_
else
ref_prefix = EXTERN(
endif
quiet_cmd_export_list = EXPORTS $@
cmd_export_list = $(OBJDUMP) -h $< | \
sed -ne '/___ksymtab/s/.*+\([^ ]*\).*/$(ref_prefix)\1)/p' >$(ksyms-lds);\
sed -ne '/___ksymtab/s/.*+\([^ ]*\).*/EXTERN(\1)/p' >$(ksyms-lds);\
rm -f $(dummy-object);\
echo | $(CC) $(a_flags) -c -o $(dummy-object) -x assembler -;\
$(LD) $(ld_flags) -r -o $@ -T $(ksyms-lds) $(dummy-object);\
......
......@@ -61,9 +61,6 @@ for mod in "$MODVERDIR"/*.mod; do
sed -n -e '3{s/ /\n/g;/^$/!p;}' "$mod"
done | sort -u |
while read sym; do
if [ -n "$CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX" ]; then
sym="${sym#_}"
fi
echo "#define __KSYM_${sym} 1"
done >> "$new_ksyms_file"
......
......@@ -115,7 +115,7 @@ static void usage(void)
*/
static void print_dep(const char *m, int slen, const char *dir)
{
int c, i;
int c, prev_c = '/', i;
printf(" $(wildcard %s/", dir);
for (i = 0; i < slen; i++) {
......@@ -124,7 +124,9 @@ static void print_dep(const char *m, int slen, const char *dir)
c = '/';
else
c = tolower(c);
putchar(c);
if (c != '/' || prev_c != '/')
putchar(c);
prev_c = c;
}
printf(".h) \\\n");
}
......
......@@ -5121,16 +5121,6 @@ sub process {
}
}
# make sure symbols are always wrapped with VMLINUX_SYMBOL() ...
# all assignments may have only one of the following with an assignment:
# .
# ALIGN(...)
# VMLINUX_SYMBOL(...)
if ($realfile eq 'vmlinux.lds.h' && $line =~ /(?:(?:^|\s)$Ident\s*=|=\s*$Ident(?:\s|$))/) {
WARN("MISSING_VMLINUX_SYMBOL",
"vmlinux.lds.h needs VMLINUX_SYMBOL() around C-visible symbols\n" . $herecurr);
}
# check for redundant bracing round if etc
if ($line =~ /(^.*)\bif\b/ && $1 !~ /else\s*$/) {
my ($level, $endln, @chunks) =
......
......@@ -67,12 +67,14 @@ identifier lock,unlock;
@@
*lock(E1@p,...);
<+... when != E1
... when != E1
when any
if (...) {
... when != E1
* return@r ...;
}
...+>
... when != E1
when any
*unlock@up(E1,...);
@script:python depends on org@
......
......@@ -14,18 +14,10 @@ virtual context
virtual org
virtual report
@ifm@
expression *E;
statement S1,S2;
position p1;
@@
if@p1 ((E == NULL && ...) || ...) S1 else S2
// The following two rules are separate, because both can match a single
// expression in different ways
@pr1 expression@
expression *ifm.E;
expression E;
identifier f;
position p1;
@@
......@@ -33,7 +25,7 @@ position p1;
(E != NULL && ...) ? <+...E->f@p1...+> : ...
@pr2 expression@
expression *ifm.E;
expression E;
identifier f;
position p2;
@@
......@@ -46,6 +38,14 @@ position p2;
sizeof(<+...E->f@p2...+>)
)
@ifm@
expression *E;
statement S1,S2;
position p1;
@@
if@p1 ((E == NULL && ...) || ...) S1 else S2
// For org and report modes
@r depends on !context && (org || report) exists@
......@@ -212,16 +212,8 @@ else S3
// The following three rules are duplicates of ifm, pr1 and pr2 respectively.
// It is need because the previous rule as already made a "change".
@ifm1 depends on context && !org && !report@
expression *E;
statement S1,S2;
position p1;
@@
if@p1 ((E == NULL && ...) || ...) S1 else S2
@pr11 depends on context && !org && !report expression@
expression *ifm1.E;
expression E;
identifier f;
position p1;
@@
......@@ -229,7 +221,7 @@ position p1;
(E != NULL && ...) ? <+...E->f@p1...+> : ...
@pr12 depends on context && !org && !report expression@
expression *ifm1.E;
expression E;
identifier f;
position p2;
@@
......@@ -242,6 +234,14 @@ position p2;
sizeof(<+...E->f@p2...+>)
)
@ifm1 depends on context && !org && !report@
expression *E;
statement S1,S2;
position p1;
@@
if@p1 ((E == NULL && ...) || ...) S1 else S2
@depends on context && !org && !report exists@
expression subE <= ifm1.E;
expression *ifm1.E;
......
......@@ -3,36 +3,17 @@
#
# A depmod wrapper used by the toplevel Makefile
if test $# -ne 3; then
echo "Usage: $0 /sbin/depmod <kernelrelease> <symbolprefix>" >&2
if test $# -ne 2; then
echo "Usage: $0 /sbin/depmod <kernelrelease>" >&2
exit 1
fi
DEPMOD=$1
KERNELRELEASE=$2
SYMBOL_PREFIX=$3
if ! test -r System.map -a -x "$DEPMOD"; then
exit 0
fi
# older versions of depmod don't support -P <symbol-prefix>
# support was added in module-init-tools 3.13
if test -n "$SYMBOL_PREFIX"; then
release=$("$DEPMOD" --version)
package=$(echo "$release" | cut -d' ' -f 1)
if test "$package" = "module-init-tools"; then
version=$(echo "$release" | cut -d' ' -f 2)
later=$(printf '%s\n' "$version" "3.13" | sort -V | tail -n 1)
if test "$later" != "$version"; then
# module-init-tools < 3.13, drop the symbol prefix
SYMBOL_PREFIX=""
fi
fi
if test -n "$SYMBOL_PREFIX"; then
SYMBOL_PREFIX="-P $SYMBOL_PREFIX"
fi
fi
# older versions of depmod require the version string to start with three
# numbers, so we cheat with a symlink here
depmod_hack_needed=true
......@@ -55,7 +36,7 @@ set -- -ae -F System.map
if test -n "$INSTALL_MOD_PATH"; then
set -- "$@" -b "$INSTALL_MOD_PATH"
fi
"$DEPMOD" "$@" "$KERNELRELEASE" $SYMBOL_PREFIX
"$DEPMOD" "$@" "$KERNELRELEASE"
ret=$?
if $depmod_hack_needed; then
......
......@@ -45,7 +45,6 @@ int in_source_file;
static int flag_debug, flag_dump_defs, flag_reference, flag_dump_types,
flag_preserve, flag_warnings, flag_rel_crcs;
static const char *mod_prefix = "";
static int errors;
static int nsyms;
......@@ -693,10 +692,10 @@ void export_symbol(const char *name)
fputs(">\n", debugfile);
/* Used as a linker script. */
printf(!flag_rel_crcs ? "%s__crc_%s = 0x%08lx;\n" :
printf(!flag_rel_crcs ? "__crc_%s = 0x%08lx;\n" :
"SECTIONS { .rodata : ALIGN(4) { "
"%s__crc_%s = .; LONG(0x%08lx); } }\n",
mod_prefix, name, crc);
"__crc_%s = .; LONG(0x%08lx); } }\n",
name, crc);
}
}
......@@ -769,7 +768,6 @@ int main(int argc, char **argv)
#ifdef __GNU_LIBRARY__
struct option long_opts[] = {
{"symbol-prefix", 1, 0, 's'},
{"debug", 0, 0, 'd'},
{"warnings", 0, 0, 'w'},
{"quiet", 0, 0, 'q'},
......@@ -789,9 +787,6 @@ int main(int argc, char **argv)
while ((o = getopt(argc, argv, "s:dwqVDr:T:phR")) != EOF)
#endif /* __GNU_LIBRARY__ */
switch (o) {
case 's':
mod_prefix = optarg;
break;
case 'd':
flag_debug++;
break;
......
......@@ -62,7 +62,6 @@ static struct sym_entry *table;
static unsigned int table_size, table_cnt;
static int all_symbols = 0;
static int absolute_percpu = 0;
static char symbol_prefix_char = '\0';
static int base_relative = 0;
int token_profit[0x10000];
......@@ -75,7 +74,6 @@ unsigned char best_table_len[256];
static void usage(void)
{
fprintf(stderr, "Usage: kallsyms [--all-symbols] "
"[--symbol-prefix=<prefix char>] "
"[--base-relative] < in.map > out.S\n");
exit(1);
}
......@@ -113,28 +111,22 @@ static int check_symbol_range(const char *sym, unsigned long long addr,
static int read_symbol(FILE *in, struct sym_entry *s)
{
char str[500];
char *sym, stype;
char sym[500], stype;
int rc;
rc = fscanf(in, "%llx %c %499s\n", &s->addr, &stype, str);
rc = fscanf(in, "%llx %c %499s\n", &s->addr, &stype, sym);
if (rc != 3) {
if (rc != EOF && fgets(str, 500, in) == NULL)
if (rc != EOF && fgets(sym, 500, in) == NULL)
fprintf(stderr, "Read error or end of file.\n");
return -1;
}
if (strlen(str) > KSYM_NAME_LEN) {
if (strlen(sym) > KSYM_NAME_LEN) {
fprintf(stderr, "Symbol %s too long for kallsyms (%zu vs %d).\n"
"Please increase KSYM_NAME_LEN both in kernel and kallsyms.c\n",
str, strlen(str), KSYM_NAME_LEN);
sym, strlen(sym), KSYM_NAME_LEN);
return -1;
}
sym = str;
/* skip prefix char */
if (symbol_prefix_char && str[0] == symbol_prefix_char)
sym++;
/* Ignore most absolute/undefined (?) symbols. */
if (strcmp(sym, "_text") == 0)
_text = s->addr;
......@@ -155,7 +147,7 @@ static int read_symbol(FILE *in, struct sym_entry *s)
is_arm_mapping_symbol(sym))
return -1;
/* exclude also MIPS ELF local symbols ($L123 instead of .L123) */