diff options
Diffstat (limited to 'scripts')
28 files changed, 502 insertions, 279 deletions
diff --git a/scripts/Makefile.btf b/scripts/Makefile.btf new file mode 100644 index 000000000000..82377e470aed --- /dev/null +++ b/scripts/Makefile.btf @@ -0,0 +1,19 @@ +# SPDX-License-Identifier: GPL-2.0 + +pahole-ver := $(CONFIG_PAHOLE_VERSION) +pahole-flags-y := + +# pahole 1.18 through 1.21 can't handle zero-sized per-CPU vars +ifeq ($(call test-le, $(pahole-ver), 121),y) +pahole-flags-$(call test-ge, $(pahole-ver), 118) += --skip_encoding_btf_vars +endif + +pahole-flags-$(call test-ge, $(pahole-ver), 121) += --btf_gen_floats + +pahole-flags-$(call test-ge, $(pahole-ver), 122) += -j + +pahole-flags-$(CONFIG_PAHOLE_HAS_LANG_EXCLUDE) += --lang_exclude=rust + +pahole-flags-$(call test-ge, $(pahole-ver), 125) += --skip_encoding_btf_inconsistent_proto --btf_gen_optimized + +export PAHOLE_FLAGS := $(pahole-flags-y) diff --git a/scripts/Makefile.build b/scripts/Makefile.build index da37bfa97211..9a3063735e71 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -425,7 +425,7 @@ $(obj)/lib.a: $(lib-y) FORCE $(call if_changed,ar) quiet_cmd_ld_multi_m = LD [M] $@ - cmd_ld_multi_m = $(LD) $(ld_flags) -r -o $@ @$(patsubst %.o,%.mod,$@) $(cmd_objtool) + cmd_ld_multi_m = $(LD) $(ld_flags) -r -o $@ @$< $(cmd_objtool) define rule_ld_multi_m $(call cmd_and_savecmd,ld_multi_m) diff --git a/scripts/Makefile.host b/scripts/Makefile.host index 8f7f842b54f9..08d83d9db31a 100644 --- a/scripts/Makefile.host +++ b/scripts/Makefile.host @@ -91,6 +91,8 @@ hostcxx_flags = -Wp,-MMD,$(depfile) \ # current working directory, which may be not accessible in the out-of-tree # modules case. hostrust_flags = --out-dir $(dir $@) --emit=dep-info=$(depfile) \ + -Clinker-flavor=gcc -Clinker=$(HOSTCC) \ + -Clink-args='$(call escsq,$(KBUILD_HOSTLDFLAGS))' \ $(KBUILD_HOSTRUSTFLAGS) $(HOST_EXTRARUSTFLAGS) \ $(HOSTRUSTFLAGS_$(target-stem)) diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 68d0134bdbf9..1a965fe68e01 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -487,14 +487,14 @@ UIMAGE_OPTS-y ?= UIMAGE_TYPE ?= kernel UIMAGE_LOADADDR ?= arch_must_set_this UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) -UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)' +UIMAGE_NAME ?= Linux-$(KERNELRELEASE) quiet_cmd_uimage = UIMAGE $@ cmd_uimage = $(BASH) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ -T $(UIMAGE_TYPE) \ -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ - -n $(UIMAGE_NAME) -d $< $@ + -n '$(UIMAGE_NAME)' -d $< $@ # XZ # --------------------------------------------------------------------------- diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal index b3a6aa8fbe8c..8568d256d6fb 100644 --- a/scripts/Makefile.modfinal +++ b/scripts/Makefile.modfinal @@ -28,14 +28,11 @@ quiet_cmd_cc_o_c = CC [M] $@ %.mod.o: %.mod.c FORCE $(call if_changed_dep,cc_o_c) -ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) - quiet_cmd_ld_ko_o = LD [M] $@ cmd_ld_ko_o += \ $(LD) -r $(KBUILD_LDFLAGS) \ $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \ - -T scripts/module.lds -o $@ $(filter %.o, $^); \ - $(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true) + -T scripts/module.lds -o $@ $(filter %.o, $^) quiet_cmd_btf_ko = BTF [M] $@ cmd_btf_ko = \ diff --git a/scripts/Makefile.package b/scripts/Makefile.package index 2bcab02da965..3addd1c0b989 100644 --- a/scripts/Makefile.package +++ b/scripts/Makefile.package @@ -69,9 +69,9 @@ $(linux-tarballs): .tmp_HEAD FORCE # --------------------------------------------------------------------------- quiet_cmd_mkspec = GEN $@ - cmd_mkspec = $(srctree)/scripts/package/mkspec > $@ + cmd_mkspec = $(srctree)/scripts/package/mkspec $@ -kernel.spec: FORCE +rpmbuild/SPECS/kernel.spec: FORCE $(call cmd,mkspec) PHONY += rpm-sources @@ -88,14 +88,12 @@ srcrpm-pkg: private build-type := s binrpm-pkg: private build-type := b rpm-pkg srcrpm-pkg: rpm-sources -rpm-pkg srcrpm-pkg binrpm-pkg: kernel.spec - +$(strip rpmbuild -b$(build-type) kernel.spec \ +rpm-pkg srcrpm-pkg binrpm-pkg: rpmbuild/SPECS/kernel.spec + +$(strip rpmbuild -b$(build-type) rpmbuild/SPECS/kernel.spec \ --define='_topdir $(abspath rpmbuild)' \ $(if $(filter a b, $(build-type)), \ --target $(UTS_MACHINE)-linux --build-in-place --noprep --define='_smp_mflags %{nil}' \ $$(rpm -q rpm >/dev/null 2>&1 || echo --nodeps)) \ - $(if $(filter b, $(build-type)), \ - --without devel) \ $(RPMOPTS)) # deb-pkg srcdeb-pkg bindeb-pkg diff --git a/scripts/Makefile.userprogs b/scripts/Makefile.userprogs index fb415297337a..f3a7e1ef3753 100644 --- a/scripts/Makefile.userprogs +++ b/scripts/Makefile.userprogs @@ -19,19 +19,19 @@ user-cobjs := $(addprefix $(obj)/, $(user-cobjs)) user_ccflags = -Wp,-MMD,$(depfile) $(KBUILD_USERCFLAGS) $(userccflags) \ $($(target-stem)-userccflags) user_ldflags = $(KBUILD_USERLDFLAGS) $(userldflags) $($(target-stem)-userldflags) +user_ldlibs = $(userldlibs) $($(target-stem)-userldlibs) # Create an executable from a single .c file quiet_cmd_user_cc_c = CC [U] $@ cmd_user_cc_c = $(CC) $(user_ccflags) $(user_ldflags) -o $@ $< \ - $($(target-stem)-userldlibs) + $(user_ldlibs) $(user-csingle): $(obj)/%: $(src)/%.c FORCE $(call if_changed_dep,user_cc_c) # Link an executable based on list of .o files quiet_cmd_user_ld = LD [U] $@ cmd_user_ld = $(CC) $(user_ldflags) -o $@ \ - $(addprefix $(obj)/, $($(target-stem)-objs)) \ - $($(target-stem)-userldlibs) + $(addprefix $(obj)/, $($(target-stem)-objs)) $(user_ldlibs) $(user-cmulti): FORCE $(call if_changed,user_ld) $(call multi_depend, $(user-cmulti), , -objs) diff --git a/scripts/Makefile.vdsoinst b/scripts/Makefile.vdsoinst new file mode 100644 index 000000000000..1022d9fdd976 --- /dev/null +++ b/scripts/Makefile.vdsoinst @@ -0,0 +1,45 @@ +# SPDX-License-Identifier: GPL-2.0-only +# ========================================================================== +# Install unstripped copies of vDSO +# ========================================================================== + +PHONY := __default +__default: + @: + +include $(srctree)/scripts/Kbuild.include + +install-dir := $(MODLIB)/vdso + +define gen_install_rules + +src := $$(firstword $$(subst :,$(space),$(1))) +dest := $(install-dir)/$$(or $$(word 2,$$(subst :,$(space),$(1))),$$(patsubst %.dbg,%,$$(notdir $(1)))) + +__default: $$(dest) +$$(dest): $$(src) FORCE + $$(call cmd,install) + +# Some architectures create .build-id symlinks +ifneq ($(filter arm sparc x86, $(SRCARCH)),) +link := $(install-dir)/.build-id/$$(shell $(READELF) -n $$(src) | sed -n 's@^.*Build ID: \(..\)\(.*\)@\1/\2@p') + +__default: $$(link) +$$(link): $$(dest) FORCE + $$(call cmd,symlink) +endif + +endef + +$(foreach x, $(sort $(INSTALL_FILES)), $(eval $(call gen_install_rules,$(x)))) + +quiet_cmd_install = INSTALL $@ + cmd_install = mkdir -p $(dir $@); cp $< $@ + +quiet_cmd_symlink = SYMLINK $@ + cmd_symlink = mkdir -p $(dir $@); ln -sf --relative $< $@ + +PHONY += FORCE +FORCE: + +.PHONY: $(PHONY) diff --git a/scripts/clang-tools/gen_compile_commands.py b/scripts/clang-tools/gen_compile_commands.py index a84cc5737c2c..180952fb91c1 100755 --- a/scripts/clang-tools/gen_compile_commands.py +++ b/scripts/clang-tools/gen_compile_commands.py @@ -19,7 +19,7 @@ _DEFAULT_OUTPUT = 'compile_commands.json' _DEFAULT_LOG_LEVEL = 'WARNING' _FILENAME_PATTERN = r'^\..*\.cmd$' -_LINE_PATTERN = r'^savedcmd_[^ ]*\.o := (.* )([^ ]*\.[cS]) *(;|$)' +_LINE_PATTERN = r'^(saved)?cmd_[^ ]*\.o := (?P<command_prefix>.* )(?P<file_path>[^ ]*\.[cS]) *(;|$)' _VALID_LOG_LEVELS = ['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'] # The tools/ directory adopts a different build system, and produces .cmd # files in a different format. Do not support it. @@ -213,15 +213,15 @@ def main(): result = line_matcher.match(f.readline()) if result: try: - entry = process_line(directory, result.group(1), - result.group(2)) + entry = process_line(directory, result.group('command_prefix'), + result.group('file_path')) compile_commands.append(entry) except ValueError as err: logging.info('Could not add line from %s: %s', cmdfile, err) with open(output, 'wt') as f: - json.dump(compile_commands, f, indent=2, sort_keys=True) + json.dump(sorted(compile_commands, key=lambda x: x["file"]), f, indent=2, sort_keys=True) if __name__ == '__main__': diff --git a/scripts/clang-tools/run-clang-tools.py b/scripts/clang-tools/run-clang-tools.py index 3266708a8658..f31ffd09e1ea 100755 --- a/scripts/clang-tools/run-clang-tools.py +++ b/scripts/clang-tools/run-clang-tools.py @@ -33,6 +33,11 @@ def parse_arguments(): path_help = "Path to the compilation database to parse" parser.add_argument("path", type=str, help=path_help) + checks_help = "Checks to pass to the analysis" + parser.add_argument("-checks", type=str, default=None, help=checks_help) + header_filter_help = "Pass the -header-filter value to the tool" + parser.add_argument("-header-filter", type=str, default=None, help=header_filter_help) + return parser.parse_args() @@ -45,14 +50,27 @@ def init(l, a): def run_analysis(entry): # Disable all checks, then re-enable the ones we want - checks = [] - checks.append("-checks=-*") - if args.type == "clang-tidy": - checks.append("linuxkernel-*") + global args + checks = None + if args.checks: + checks = args.checks.split(',') else: - checks.append("clang-analyzer-*") - checks.append("-clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling") - p = subprocess.run(["clang-tidy", "-p", args.path, ",".join(checks), entry["file"]], + checks = ["-*"] + if args.type == "clang-tidy": + checks.append("linuxkernel-*") + else: + checks.append("clang-analyzer-*") + checks.append("-clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling") + file = entry["file"] + if not file.endswith(".c") and not file.endswith(".cpp"): + with lock: + print(f"Skipping non-C file: '{file}'", file=sys.stderr) + return + pargs = ["clang-tidy", "-p", args.path, "-checks=" + ",".join(checks)] + if args.header_filter: + pargs.append("-header-filter=" + args.header_filter) + pargs.append(file) + p = subprocess.run(pargs, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, cwd=entry["directory"]) diff --git a/scripts/dummy-tools/gcc b/scripts/dummy-tools/gcc index 07f6dc4c5cf6..e6c41427c02f 100755 --- a/scripts/dummy-tools/gcc +++ b/scripts/dummy-tools/gcc @@ -91,6 +91,16 @@ if arg_contain -S "$@"; then fi exit 0 fi + + # For arch/powerpc/tools/gcc-check-fpatchable-function-entry.sh + if arg_contain -m64 "$@" && arg_contain -fpatchable-function-entry=2 "$@"; then + echo "func:" + echo ".section __patchable_function_entries" + echo ".localentry" + echo " nop" + echo " nop" + exit 0 + fi fi # To set GCC_PLUGINS diff --git a/scripts/gcc-plugins/latent_entropy_plugin.c b/scripts/gcc-plugins/latent_entropy_plugin.c index 39e86be60dd2..ff0b192be91f 100644 --- a/scripts/gcc-plugins/latent_entropy_plugin.c +++ b/scripts/gcc-plugins/latent_entropy_plugin.c @@ -17,7 +17,7 @@ * if (argc <= 1) * printf("%s: no command arguments :(\n", *argv); * else - * printf("%s: %d command arguments!\n", *argv, args - 1); + * printf("%s: %d command arguments!\n", *argv, argc - 1); * } * * after: @@ -47,7 +47,7 @@ * // perturb_local_entropy() * } else { * local_entropy ^= 3896280633962944730; - * printf("%s: %d command arguments!\n", *argv, args - 1); + * printf("%s: %d command arguments!\n", *argv, argc - 1); * } * * // latent_entropy_execute() 4. diff --git a/scripts/gcc-plugins/randomize_layout_plugin.c b/scripts/gcc-plugins/randomize_layout_plugin.c index 366395cab490..910bd21d08f4 100644 --- a/scripts/gcc-plugins/randomize_layout_plugin.c +++ b/scripts/gcc-plugins/randomize_layout_plugin.c @@ -278,8 +278,6 @@ static bool is_flexible_array(const_tree field) { const_tree fieldtype; const_tree typesize; - const_tree elemtype; - const_tree elemsize; fieldtype = TREE_TYPE(field); typesize = TYPE_SIZE(fieldtype); @@ -287,20 +285,12 @@ static bool is_flexible_array(const_tree field) if (TREE_CODE(fieldtype) != ARRAY_TYPE) return false; - elemtype = TREE_TYPE(fieldtype); - elemsize = TYPE_SIZE(elemtype); - /* size of type is represented in bits */ if (typesize == NULL_TREE && TYPE_DOMAIN(fieldtype) != NULL_TREE && TYPE_MAX_VALUE(TYPE_DOMAIN(fieldtype)) == NULL_TREE) return true; - if (typesize != NULL_TREE && - (TREE_CONSTANT(typesize) && (!tree_to_uhwi(typesize) || - tree_to_uhwi(typesize) == tree_to_uhwi(elemsize)))) - return true; - return false; } diff --git a/scripts/gdb/linux/constants.py.in b/scripts/gdb/linux/constants.py.in index e3517d4ab8ec..e810e0c27ff1 100644 --- a/scripts/gdb/linux/constants.py.in +++ b/scripts/gdb/linux/constants.py.in @@ -66,10 +66,11 @@ LX_GDBPARSED(IRQD_LEVEL) LX_GDBPARSED(IRQ_HIDDEN) /* linux/module.h */ -LX_GDBPARSED(MOD_TEXT) -LX_GDBPARSED(MOD_DATA) -LX_GDBPARSED(MOD_RODATA) -LX_GDBPARSED(MOD_RO_AFTER_INIT) +if IS_BUILTIN(CONFIG_MODULES): + LX_GDBPARSED(MOD_TEXT) + LX_GDBPARSED(MOD_DATA) + LX_GDBPARSED(MOD_RODATA) + LX_GDBPARSED(MOD_RO_AFTER_INIT) /* linux/mount.h */ LX_VALUE(MNT_NOSUID) @@ -157,3 +158,4 @@ LX_CONFIG(CONFIG_STACKDEPOT) LX_CONFIG(CONFIG_PAGE_OWNER) LX_CONFIG(CONFIG_SLUB_DEBUG) LX_CONFIG(CONFIG_SLAB_FREELIST_HARDENED) +LX_CONFIG(CONFIG_MMU) diff --git a/scripts/gdb/linux/cpus.py b/scripts/gdb/linux/cpus.py index 255dc18cb9da..cba589e5b57d 100644 --- a/scripts/gdb/linux/cpus.py +++ b/scripts/gdb/linux/cpus.py @@ -179,6 +179,21 @@ def get_current_task(cpu): else: raise gdb.GdbError("Sorry, obtaining the current task is not allowed " "while running in userspace(EL0)") + elif utils.is_target_arch("riscv"): + current_tp = gdb.parse_and_eval("$tp") + scratch_reg = gdb.parse_and_eval("$sscratch") + + # by default tp points to current task + current_task = current_tp.cast(task_ptr_type) + + # scratch register is set 0 in trap handler after entering kernel. + # When hart is in user mode, scratch register is pointing to task_struct. + # and tp is used by user mode. So when scratch register holds larger value + # (negative address as ulong is larger value) than tp, then use scratch register. + if (scratch_reg.cast(utils.get_ulong_type()) > current_tp.cast(utils.get_ulong_type())): + current_task = scratch_reg.cast(task_ptr_type) + + return current_task.dereference() else: raise gdb.GdbError("Sorry, obtaining the current task is not yet " "supported with this arch") diff --git a/scripts/gdb/linux/vmalloc.py b/scripts/gdb/linux/vmalloc.py index 48e4a4fae7bb..d3c8a0274d1e 100644 --- a/scripts/gdb/linux/vmalloc.py +++ b/scripts/gdb/linux/vmalloc.py @@ -10,8 +10,9 @@ import gdb import re from linux import lists, utils, stackdepot, constants, mm -vmap_area_type = utils.CachedType('struct vmap_area') -vmap_area_ptr_type = vmap_area_type.get_type().pointer() +if constants.LX_CONFIG_MMU: + vmap_area_type = utils.CachedType('struct vmap_area') + vmap_area_ptr_type = vmap_area_type.get_type().pointer() def is_vmalloc_addr(x): pg_ops = mm.page_ops().ops @@ -25,6 +26,9 @@ class LxVmallocInfo(gdb.Command): super(LxVmallocInfo, self).__init__("lx-vmallocinfo", gdb.COMMAND_DATA) def invoke(self, arg, from_tty): + if not constants.LX_CONFIG_MMU: + raise gdb.GdbError("Requires MMU support") + vmap_area_list = gdb.parse_and_eval('vmap_area_list') for vmap_area in lists.list_for_each_entry(vmap_area_list, vmap_area_ptr_type, "list"): if not vmap_area['vm']: diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl index ab123b498fd9..16d8ac6005b6 100755 --- a/scripts/get_maintainer.pl +++ b/scripts/get_maintainer.pl @@ -57,6 +57,7 @@ my $subsystem = 0; my $status = 0; my $letters = ""; my $keywords = 1; +my $keywords_in_file = 0; my $sections = 0; my $email_file_emails = 0; my $from_filename = 0; @@ -272,6 +273,7 @@ if (!GetOptions( 'letters=s' => \$letters, 'pattern-depth=i' => \$pattern_depth, 'k|keywords!' => \$keywords, + 'kf|keywords-in-file!' => \$keywords_in_file, 'sections!' => \$sections, 'fe|file-emails!' => \$email_file_emails, 'f|file' => \$from_filename, @@ -318,6 +320,7 @@ if ($sections || $letters ne "") { $subsystem = 0; $web = 0; $keywords = 0; + $keywords_in_file = 0; $interactive = 0; } else { my $selections = $email + $scm + $status + $subsystem + $web; @@ -548,16 +551,14 @@ foreach my $file (@ARGV) { $file =~ s/^\Q${cur_path}\E//; #strip any absolute path $file =~ s/^\Q${lk_path}\E//; #or the path to the lk tree push(@files, $file); - if ($file ne "MAINTAINERS" && -f $file && $keywords) { + if ($file ne "MAINTAINERS" && -f $file && $keywords && $keywords_in_file) { open(my $f, '<', $file) or die "$P: Can't open $file: $!\n"; my $text = do { local($/) ; <$f> }; close($f); - if ($keywords) { - foreach my $line (keys %keyword_hash) { - if ($text =~ m/$keyword_hash{$line}/x) { - push(@keyword_tvi, $line); - } + foreach my $line (keys %keyword_hash) { + if ($text =~ m/$keyword_hash{$line}/x) { + push(@keyword_tvi, $line); } } } @@ -919,7 +920,7 @@ sub get_maintainers { } foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) { - add_categories($line); + add_categories($line, ""); if ($sections) { my $i; my $start = find_starting_index($line); @@ -947,7 +948,7 @@ sub get_maintainers { if ($keywords) { @keyword_tvi = sort_and_uniq(@keyword_tvi); foreach my $line (@keyword_tvi) { - add_categories($line); + add_categories($line, ":Keyword:$keyword_hash{$line}"); } } @@ -1076,6 +1077,7 @@ Output type options: Other options: --pattern-depth => Number of pattern directory traversals (default: 0 (all)) --keywords => scan patch for keywords (default: $keywords) + --keywords-in-file => scan file for keywords (default: $keywords_in_file) --sections => print all of the subsystem sections with pattern matches --letters => print all matching 'letter' types from all matching sections --mailmap => use .mailmap file (default: $email_use_mailmap) @@ -1086,7 +1088,7 @@ Other options: Default options: [--email --tree --nogit --git-fallback --m --r --n --l --multiline - --pattern-depth=0 --remove-duplicates --rolestats] + --pattern-depth=0 --remove-duplicates --rolestats --keywords] Notes: Using "-f directory" may give unexpected results: @@ -1312,7 +1314,7 @@ sub get_list_role { } sub add_categories { - my ($index) = @_; + my ($index, $suffix) = @_; my $i; my $start = find_starting_index($index); @@ -1342,7 +1344,7 @@ sub add_categories { if (!$hash_list_to{lc($list_address)}) { $hash_list_to{lc($list_address)} = 1; push(@list_to, [$list_address, - "subscriber list${list_role}"]); + "subscriber list${list_role}" . $suffix]); } } } else { @@ -1352,12 +1354,12 @@ sub add_categories { if ($email_moderated_list) { $hash_list_to{lc($list_address)} = 1; push(@list_to, [$list_address, - "moderated list${list_role}"]); + "moderated list${list_role}" . $suffix]); } } else { $hash_list_to{lc($list_address)} = 1; push(@list_to, [$list_address, - "open list${list_role}"]); + "open list${list_role}" . $suffix]); } } } @@ -1365,19 +1367,19 @@ sub add_categories { } elsif ($ptype eq "M") { if ($email_maintainer) { my $role = get_maintainer_role($i); - push_email_addresses($pvalue, $role); + push_email_addresses($pvalue, $role . $suffix); } } elsif ($ptype eq "R") { if ($email_reviewer) { my $subsystem = get_subsystem_name($i); - push_email_addresses($pvalue, "reviewer:$subsystem"); + push_email_addresses($pvalue, "reviewer:$subsystem" . $suffix); } } elsif ($ptype eq "T") { - push(@scm, $pvalue); + push(@scm, $pvalue . $suffix); } elsif ($ptype eq "W") { - push(@web, $pvalue); + push(@web, $pvalue . $suffix); } elsif ($ptype eq "S") { - push(@status, $pvalue); + push(@status, $pvalue . $suffix); } } } diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c index 0572330bf8a7..a76925b46ce6 100644 --- a/scripts/kconfig/symbol.c +++ b/scripts/kconfig/symbol.c @@ -122,9 +122,9 @@ static long long sym_get_range_val(struct symbol *sym, int base) static void sym_validate_range(struct symbol *sym) { struct property *prop; + struct symbol *range_sym; int base; long long val, val2; - char str[64]; switch (sym->type) { case S_INT: @@ -140,17 +140,15 @@ static void sym_validate_range(struct symbol *sym) if (!prop) return; val = strtoll(sym->curr.val, NULL, base); - val2 = sym_get_range_val(prop->expr->left.sym, base); + range_sym = prop->expr->left.sym; + val2 = sym_get_range_val(range_sym, base); if (val >= val2) { - val2 = sym_get_range_val(prop->expr->right.sym, base); + range_sym = prop->expr->right.sym; + val2 = sym_get_range_val(range_sym, base); if (val <= val2) return; } - if (sym->type == S_INT) - sprintf(str, "%lld", val2); - else - sprintf(str, "0x%llx", val2); - sym->curr.val = xstrdup(str); + sym->curr.val = range_sym->curr.val; } static void sym_set_changed(struct symbol *sym) diff --git a/scripts/mod/Makefile b/scripts/mod/Makefile index c9e38ad937fd..3c54125eb373 100644 --- a/scripts/mod/Makefile +++ b/scripts/mod/Makefile @@ -5,7 +5,7 @@ CFLAGS_REMOVE_empty.o += $(CC_FLAGS_LTO) hostprogs-always-y += modpost mk_elfconfig always-y += empty.o -modpost-objs := modpost.o file2alias.o sumversion.o +modpost-objs := modpost.o file2alias.o sumversion.o symsearch.o devicetable-offsets-file := devicetable-offsets.h @@ -16,7 +16,7 @@ targets += $(devicetable-offsets-file) devicetable-offsets.s # dependencies on generated files need to be listed explicitly -$(obj)/modpost.o $(obj)/file2alias.o $(obj)/sumversion.o: $(obj)/elfconfig.h +$(obj)/modpost.o $(obj)/file2alias.o $(obj)/sumversion.o $(obj)/symsearch.o: $(obj)/elfconfig.h $(obj)/file2alias.o: $(obj)/$(devicetable-offsets-file) quiet_cmd_elfconfig = MKELF $@ diff --git a/scripts/mod/devicetable-offsets.c b/scripts/mod/devicetable-offsets.c index abe65f8968dd..e91a3c38143b 100644 --- a/scripts/mod/devicetable-offsets.c +++ b/scripts/mod/devicetable-offsets.c @@ -265,7 +265,14 @@ int main(void) DEVID(cdx_device_id); DEVID_FIELD(cdx_device_id, vendor); DEVID_FIELD(cdx_device_id, device); + DEVID_FIELD(cdx_device_id, subvendor); + DEVID_FIELD(cdx_device_id, subdevice); + DEVID_FIELD(cdx_device_id, class); + DEVID_FIELD(cdx_device_id, class_mask); DEVID_FIELD(cdx_device_id, override_only); + DEVID(vchiq_device_id); + DEVID_FIELD(vchiq_device_id, name); + return 0; } diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c index 7056751c29b1..4829680a0a6d 100644 --- a/scripts/mod/file2alias.c +++ b/scripts/mod/file2alias.c @@ -1348,13 +1348,13 @@ static int do_typec_entry(const char *filename, void *symval, char *alias) /* Looks like: tee:uuid */ static int do_tee_entry(const char *filename, void *symval, char *alias) { - DEF_FIELD(symval, tee_client_device_id, uuid); + DEF_FIELD_ADDR(symval, tee_client_device_id, uuid); sprintf(alias, "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", - uuid.b[0], uuid.b[1], uuid.b[2], uuid.b[3], uuid.b[4], - uuid.b[5], uuid.b[6], uuid.b[7], uuid.b[8], uuid.b[9], - uuid.b[10], uuid.b[11], uuid.b[12], uuid.b[13], uuid.b[14], - uuid.b[15]); + uuid->b[0], uuid->b[1], uuid->b[2], uuid->b[3], uuid->b[4], + uuid->b[5], uuid->b[6], uuid->b[7], uuid->b[8], uuid->b[9], + uuid->b[10], uuid->b[11], uuid->b[12], uuid->b[13], uuid->b[14], + uuid->b[15]); add_wildcard(alias); return 1; @@ -1401,10 +1401,10 @@ static int do_mhi_ep_entry(const char *filename, void *symval, char *alias) /* Looks like: ishtp:{guid} */ static int do_ishtp_entry(const char *filename, void *symval, char *alias) { - DEF_FIELD(symval, ishtp_device_id, guid); + DEF_FIELD_ADDR(symval, ishtp_device_id, guid); strcpy(alias, ISHTP_MODULE_PREFIX "{"); - add_guid(alias, guid); + add_guid(alias, *guid); strcat(alias, "}"); return 1; @@ -1458,6 +1458,10 @@ static int do_cdx_entry(const char *filename, void *symval, { DEF_FIELD(symval, cdx_device_id, vendor); DEF_FIELD(symval, cdx_device_id, device); + DEF_FIELD(symval, cdx_device_id, subvendor); + DEF_FIELD(symval, cdx_device_id, subdevice); + DEF_FIELD(symval, cdx_device_id, class); + DEF_FIELD(symval, cdx_device_id, class_mask); DEF_FIELD(symval, cdx_device_id, override_only); switch (override_only) { @@ -1475,6 +1479,18 @@ static int do_cdx_entry(const char *filename, void *symval, ADD(alias, "v", vendor != CDX_ANY_ID, vendor); ADD(alias, "d", device != CDX_ANY_ID, device); + ADD(alias, "sv", subvendor != CDX_ANY_ID, subvendor); + ADD(alias, "sd", subdevice != CDX_ANY_ID, subdevice); + ADD(alias, "c", class_mask == 0xFFFFFF, class); + + return 1; +} + +static int do_vchiq_entry(const char *filename, void *symval, char *alias) +{ + DEF_FIELD_ADDR(symval, vchiq_device_id, name); + sprintf(alias, "vchiq:%s", *name); + return 1; } @@ -1558,6 +1574,7 @@ static const struct devtable devtable[] = { {"dfl", SIZE_dfl_device_id, do_dfl_entry}, {"ishtp", SIZE_ishtp_device_id, do_ishtp_entry}, {"cdx", SIZE_cdx_device_id, do_cdx_entry}, + {"vchiq", SIZE_vchiq_device_id, do_vchiq_entry}, }; /* Create MODULE_ALIAS() statements. diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index ea72af229d2b..cb6406f485a9 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -22,7 +22,6 @@ #include <errno.h> #include "modpost.h" #include "../../include/linux/license.h" -#include "../../include/linux/module_symbol.h" static bool module_enabled; /* Are we using CONFIG_MODVERSIONS? */ @@ -577,11 +576,14 @@ static int parse_elf(struct elf_info *info, const char *filename) *p = TO_NATIVE(*p); } + symsearch_init(info); + return 1; } static void parse_elf_finish(struct elf_info *info) { + symsearch_finish(info); release_file(info->hdr, info->size); } @@ -792,24 +794,16 @@ static void check_section(const char *modname, struct elf_info *elf, #define ALL_INIT_DATA_SECTIONS \ ".init.setup", ".init.rodata", ".meminit.rodata", \ ".init.data", ".meminit.data" -#define ALL_EXIT_DATA_SECTIONS \ - ".exit.data", ".memexit.data" - -#define ALL_INIT_TEXT_SECTIONS \ - ".init.text", ".meminit.text" -#define ALL_EXIT_TEXT_SECTIONS \ - ".exit.text", ".memexit.text" #define ALL_PCI_INIT_SECTIONS \ ".pci_fixup_early", ".pci_fixup_header", ".pci_fixup_final", \ ".pci_fixup_enable", ".pci_fixup_resume", \ ".pci_fixup_resume_early", ".pci_fixup_suspend" -#define ALL_XXXINIT_SECTIONS MEM_INIT_SECTIONS -#define ALL_XXXEXIT_SECTIONS MEM_EXIT_SECTIONS +#define ALL_XXXINIT_SECTIONS ".meminit.*" #define ALL_INIT_SECTIONS INIT_SECTIONS, ALL_XXXINIT_SECTIONS -#define ALL_EXIT_SECTIONS EXIT_SECTIONS, ALL_XXXEXIT_SECTIONS +#define ALL_EXIT_SECTIONS ".exit.*" #define DATA_SECTIONS ".data", ".data.rel" #define TEXT_SECTIONS ".text", ".text.*", ".sched.text", \ @@ -819,20 +813,13 @@ static void check_section(const char *modname, struct elf_info *elf, ".coldtext", ".softirqentry.text" #define INIT_SECTIONS ".init.*" -#define MEM_INIT_SECTIONS ".meminit.*" -#define EXIT_SECTIONS ".exit.*" -#define MEM_EXIT_SECTIONS ".memexit.*" - -#define ALL_TEXT_SECTIONS ALL_INIT_TEXT_SECTIONS, ALL_EXIT_TEXT_SECTIONS, \ +#define ALL_TEXT_SECTIONS ".init.text", ".meminit.text", ".exit.text", \ TEXT_SECTIONS, OTHER_TEXT_SECTIONS enum mismatch { - TEXT_TO_ANY_INIT, - DATA_TO_ANY_INIT, - TEXTDATA_TO_ANY_EXIT, + TEXTDATA_TO_ANY_INIT_EXIT, XXXINIT_TO_SOME_INIT, - XXXEXIT_TO_SOME_EXIT, ANY_INIT_TO_ANY_EXIT, ANY_EXIT_TO_ANY_INIT, EXTABLE_TO_NON_TEXT, @@ -863,19 +850,9 @@ static const struct sectioncheck sectioncheck[] = { * normal code and data */ { - .fromsec = { TEXT_SECTIONS, NULL }, - .bad_tosec = { ALL_INIT_SECTIONS, NULL }, - .mismatch = TEXT_TO_ANY_INIT, -}, -{ - .fromsec = { DATA_SECTIONS, NULL }, - .bad_tosec = { ALL_XXXINIT_SECTIONS, INIT_SECTIONS, NULL }, - .mismatch = DATA_TO_ANY_INIT, -}, -{ .fromsec = { TEXT_SECTIONS, DATA_SECTIONS, NULL }, - .bad_tosec = { ALL_EXIT_SECTIONS, NULL }, - .mismatch = TEXTDATA_TO_ANY_EXIT, + .bad_tosec = { ALL_INIT_SECTIONS, ALL_EXIT_SECTIONS, NULL }, + .mismatch = TEXTDATA_TO_ANY_INIT_EXIT, }, /* Do not reference init code/data from meminit code/data */ { @@ -883,12 +860,6 @@ static const struct sectioncheck sectioncheck[] = { .bad_tosec = { INIT_SECTIONS, NULL }, .mismatch = XXXINIT_TO_SOME_INIT, }, -/* Do not reference exit code/data from memexit code/data */ -{ - .fromsec = { ALL_XXXEXIT_SECTIONS, NULL }, - .bad_tosec = { EXIT_SECTIONS, NULL }, - .mismatch = XXXEXIT_TO_SOME_EXIT, -}, /* Do not use exit code/data from init code */ { .fromsec = { ALL_INIT_SECTIONS, NULL }, @@ -1006,19 +977,7 @@ static int secref_whitelist(const char *fromsec, const char *fromsym, /* symbols in data sections that may refer to any init/exit sections */ if (match(fromsec, PATTERNS(DATA_SECTIONS)) && match(tosec, PATTERNS(ALL_INIT_SECTIONS, ALL_EXIT_SECTIONS)) && - match(fromsym, PATTERNS("*_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"))) - return 0; - - /* symbols in data sections that may refer to meminit sections */ - if (match(fromsec, PATTERNS(DATA_SECTIONS)) && - match(tosec, PATTERNS(ALL_XXXINIT_SECTIONS, ALL_XXXEXIT_SECTIONS)) && - match(fromsym, PATTERNS("*driver"))) + match(fromsym, PATTERNS("*_ops", "*_probe", "*_console"))) return 0; /* @@ -1028,7 +987,7 @@ static int secref_whitelist(const char *fromsec, const char *fromsym, */ if (!extra_warn && match(fromsec, PATTERNS(DATA_SECTIONS)) && - match(tosec, PATTERNS(EXIT_SECTIONS)) && + match(tosec, PATTERNS(ALL_EXIT_SECTIONS)) && match(fromsym, PATTERNS("*driver"))) return 0; @@ -1050,71 +1009,10 @@ static int secref_whitelist(const char *fromsec, const char *fromsym, return 1; } -/* - * If there's no name there, ignore it; likewise, ignore it if it's - * one of the magic symbols emitted used by current 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 bool is_valid_name(struct elf_info *elf, Elf_Sym *sym) -{ - const char *name = elf->strtab + sym->st_name; - - if (!name || !strlen(name)) - return false; - return !is_mapping_symbol(name); -} - -/* Look up the nearest symbol based on the section and the address */ -static Elf_Sym *find_nearest_sym(struct elf_info *elf, Elf_Addr addr, - unsigned int secndx, bool allow_negative, - Elf_Addr min_distance) -{ - Elf_Sym *sym; - Elf_Sym *near = NULL; - Elf_Addr sym_addr, distance; - bool is_arm = (elf->hdr->e_machine == EM_ARM); - - for (sym = elf->symtab_start; sym < elf->symtab_stop; sym++) { - if (get_secindex(elf, sym) != secndx) - continue; - if (!is_valid_name(elf, sym)) - continue; - - sym_addr = sym->st_value; - - /* - * For ARM Thumb instruction, the bit 0 of st_value is set - * if the symbol is STT_FUNC type. Mask it to get the address. - */ - if (is_arm && ELF_ST_TYPE(sym->st_info) == STT_FUNC) - sym_addr &= ~1; - - if (addr >= sym_addr) - distance = addr - sym_addr; - else if (allow_negative) - distance = sym_addr - addr; - else - continue; - - if (distance <= min_distance) { - min_distance = distance; - near = sym; - } - - if (min_distance == 0) - break; - } - return near; -} - static Elf_Sym *find_fromsym(struct elf_info *elf, Elf_Addr addr, unsigned int secndx) { - return find_nearest_sym(elf, addr, secndx, false, ~0); + return symsearch_find_nearest(elf, addr, secndx, false, ~0); } static Elf_Sym *find_tosym(struct elf_info *elf, Elf_Addr addr, Elf_Sym *sym) @@ -1127,7 +1025,8 @@ static Elf_Sym *find_tosym(struct elf_info *elf, Elf_Addr addr, Elf_Sym *sym) * Strive to find a better symbol name, but the resulting name may not * match the symbol referenced in the original code. */ - return find_nearest_sym(elf, addr, get_secindex(elf, sym), true, 20); + return symsearch_find_nearest(elf, addr, get_secindex(elf, sym), + true, 20); } static bool is_executable_section(struct elf_info *elf, unsigned int secndx) @@ -1248,10 +1147,10 @@ static void check_export_symbol(struct module *mod, struct elf_info *elf, ELF_ST_TYPE(sym->st_info) == STT_LOPROC) s->is_func = true; - if (match(secname, PATTERNS(INIT_SECTIONS))) + if (match(secname, PATTERNS(ALL_INIT_SECTIONS))) warn("%s: %s: EXPORT_SYMBOL used for init symbol. Remove __init or EXPORT_SYMBOL.\n", mod->name, name); - else if (match(secname, PATTERNS(EXIT_SECTIONS))) + else if (match(secname, PATTERNS(ALL_EXIT_SECTIONS))) warn("%s: %s: EXPORT_SYMBOL used for exit symbol. Remove __exit or EXPORT_SYMBOL.\n", mod->name, name); } @@ -1468,41 +1367,31 @@ static void get_rel_type_and_sym(struct elf_info *elf, uint64_t r_info, return; } - if (is_64bit) { - Elf64_Xword r_info64 = r_info; - - r_info = TO_NATIVE(r_info64); - } else { - Elf32_Word r_info32 = r_info; - - r_info = TO_NATIVE(r_info32); - } + if (is_64bit) + r_info = TO_NATIVE((Elf64_Xword)r_info); + else + r_info = TO_NATIVE((Elf32_Word)r_info); *r_type = ELF_R_TYPE(r_info); *r_sym = ELF_R_SYM(r_info); } static void section_rela(struct module *mod, struct elf_info *elf, - Elf_Shdr *sechdr) + unsigned int fsecndx, const char *fromsec, + const Elf_Rela *start, const Elf_Rela *stop) { - Elf_Rela *rela; - unsigned int fsecndx = sechdr->sh_info; - const char *fromsec = sec_name(elf, fsecndx); - Elf_Rela *start = (void *)elf->hdr + sechdr->sh_offset; - Elf_Rela *stop = (void *)start + sechdr->sh_size; - - /* if from section (name) is know good then skip it */ - if (match(fromsec, section_white_list)) - return; + const Elf_Rela *rela; for (rela = start; rela < stop; rela++) { + Elf_Sym *tsym; Elf_Addr taddr, r_offset; unsigned int r_type, r_sym; r_offset = TO_NATIVE(rela->r_offset); get_rel_type_and_sym(elf, rela->r_info, &r_type, &r_sym); - taddr = TO_NATIVE(rela->r_addend); + tsym = elf->symtab_start + r_sym; + taddr = tsym->st_value + TO_NATIVE(rela->r_addend); switch (elf->hdr->e_machine) { case EM_RISCV: @@ -1517,23 +1406,16 @@ static void section_rela(struct module *mod, struct elf_info *elf, break; } - check_section_mismatch(mod, elf, elf->symtab_start + r_sym, + check_section_mismatch(mod, elf, tsym, fsecndx, fromsec, r_offset, taddr); } } static void section_rel(struct module *mod, struct elf_info *elf, - Elf_Shdr *sechdr) + unsigned int fsecndx, const char *fromsec, + const Elf_Rel *start, const Elf_Rel *stop) { - Elf_Rel *rel; - unsigned int fsecndx = sechdr->sh_info; - const char *fromsec = sec_name(elf, fsecndx); - Elf_Rel *start = (void *)elf->hdr + sechdr->sh_offset; - Elf_Rel *stop = (void *)start + sechdr->sh_size; - - /* if from section (name) is know good then skip it */ - if (match(fromsec, section_white_list)) - return; + const Elf_Rel *rel; for (rel = start; rel < stop; rel++) { Elf_Sym *tsym; @@ -1581,16 +1463,33 @@ static void section_rel(struct module *mod, struct elf_info *elf, static void check_sec_ref(struct module *mod, struct elf_info *elf) { int i; - Elf_Shdr *sechdrs = elf->sechdrs; /* Walk through all sections */ for (i = 0; i < elf->num_sections; i++) { - check_section(mod->name, elf, &elf->sechdrs[i]); + Elf_Shdr *sechdr = &elf->sechdrs[i]; + + check_section(mod->name, elf, sechdr); /* We want to process only relocation sections and not .init */ - if (sechdrs[i].sh_type == SHT_RELA) - section_rela(mod, elf, &elf->sechdrs[i]); - else if (sechdrs[i].sh_type == SHT_REL) - section_rel(mod, elf, &elf->sechdrs[i]); + if (sechdr->sh_type == SHT_REL || sechdr->sh_type == SHT_RELA) { + /* section to which the relocation applies */ + unsigned int secndx = sechdr->sh_info; + const char *secname = sec_name(elf, secndx); + const void *start, *stop; + + /* If the section is known good, skip it */ + if (match(secname, section_white_list)) + continue; + + start = sym_get_data_by_offset(elf, i, 0); + stop = start + sechdr->sh_size; + + if (sechdr->sh_type == SHT_RELA) + section_rela(mod, elf, secndx, secname, + start, stop); + else + section_rel(mod, elf, secndx, secname, + start, stop); + } } } diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h index 5f94c2c9f2d9..69baf014da4f 100644 --- a/scripts/mod/modpost.h +++ b/scripts/mod/modpost.h @@ -1,4 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0 */ +#include <byteswap.h> #include <stdbool.h> #include <stdio.h> #include <stdlib.h> @@ -10,6 +11,7 @@ #include <fcntl.h> #include <unistd.h> #include <elf.h> +#include "../../include/linux/module_symbol.h" #include "list.h" #include "elfconfig.h" @@ -50,21 +52,19 @@ #define ELF_R_TYPE ELF64_R_TYPE #endif -#if KERNEL_ELFDATA != HOST_ELFDATA +#define bswap(x) \ +({ \ + _Static_assert(sizeof(x) == 1 || sizeof(x) == 2 || \ + sizeof(x) == 4 || sizeof(x) == 8, "bug"); \ + (typeof(x))(sizeof(x) == 2 ? bswap_16(x) : \ + sizeof(x) == 4 ? bswap_32(x) : \ + sizeof(x) == 8 ? bswap_64(x) : \ + x); \ +}) -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]; -} +#if KERNEL_ELFDATA != HOST_ELFDATA -#define TO_NATIVE(x) \ -({ \ - typeof(x) __x; \ - __endian(&(x), &(__x), sizeof(__x)); \ - __x; \ -}) +#define TO_NATIVE(x) (bswap(x)) #else /* endianness matches */ @@ -128,6 +128,8 @@ struct elf_info { * take shndx from symtab_shndx_start[N] instead */ Elf32_Word *symtab_shndx_start; Elf32_Word *symtab_shndx_stop; + + struct symsearch *symsearch; }; /* Accessor for sym->st_shndx, hides ugliness of "64k sections" */ @@ -154,6 +156,28 @@ static inline unsigned int get_secindex(const struct elf_info *info, return index; } +/* + * If there's no name there, ignore it; likewise, ignore it if it's + * one of the magic symbols emitted used by current tools. + * + * Internal symbols created by tools should be ignored by modpost. + */ +static inline bool is_valid_name(struct elf_info *elf, Elf_Sym *sym) +{ + const char *name = elf->strtab + sym->st_name; + + if (!name || !strlen(name)) + return false; + return !is_mapping_symbol(name); +} + +/* symsearch.c */ +void symsearch_init(struct elf_info *elf); +void symsearch_finish(struct elf_info *elf); +Elf_Sym *symsearch_find_nearest(struct elf_info *elf, Elf_Addr addr, + unsigned int secndx, bool allow_negative, + Elf_Addr min_distance); + /* file2alias.c */ void handle_moddevtable(struct module *mod, struct elf_info *info, Elf_Sym *sym, const char *symname); diff --git a/scripts/mod/symsearch.c b/scripts/mod/symsearch.c new file mode 100644 index 000000000000..aa4ed51f9960 --- /dev/null +++ b/scripts/mod/symsearch.c @@ -0,0 +1,199 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * Helper functions for finding the symbol in an ELF which is "nearest" + * to a given address. + */ + +#include "modpost.h" + +struct syminfo { + unsigned int symbol_index; + unsigned int section_index; + Elf_Addr addr; +}; + +/* + * Container used to hold an entire binary search table. + * Entries in table are ascending, sorted first by section_index, + * then by addr, and last by symbol_index. The sorting by + * symbol_index is used to ensure predictable behavior when + * multiple symbols are present with the same address; all + * symbols past the first are effectively ignored, by eliding + * them in symsearch_fixup(). + */ +struct symsearch { + unsigned int table_size; + struct syminfo table[]; +}; + +static int syminfo_compare(const void *s1, const void *s2) +{ + const struct syminfo *sym1 = s1; + const struct syminfo *sym2 = s2; + + if (sym1->section_index > sym2->section_index) + return 1; + if (sym1->section_index < sym2->section_index) + return -1; + if (sym1->addr > sym2->addr) + return 1; + if (sym1->addr < sym2->addr) + return -1; + if (sym1->symbol_index > sym2->symbol_index) + return 1; + if (sym1->symbol_index < sym2->symbol_index) + return -1; + return 0; +} + +static unsigned int symbol_count(struct elf_info *elf) +{ + unsigned int result = 0; + + for (Elf_Sym *sym = elf->symtab_start; sym < elf->symtab_stop; sym++) { + if (is_valid_name(elf, sym)) + result++; + } + return result; +} + +/* + * Populate the search array that we just allocated. + * Be slightly paranoid here. The ELF file is mmap'd and could + * conceivably change between symbol_count() and symsearch_populate(). + * If we notice any difference, bail out rather than potentially + * propagating errors or crashing. + */ +static void symsearch_populate(struct elf_info *elf, + struct syminfo *table, + unsigned int table_size) +{ + bool is_arm = (elf->hdr->e_machine == EM_ARM); + + for (Elf_Sym *sym = elf->symtab_start; sym < elf->symtab_stop; sym++) { + if (is_valid_name(elf, sym)) { + if (table_size-- == 0) + fatal("%s: size mismatch\n", __func__); + table->symbol_index = sym - elf->symtab_start; + table->section_index = get_secindex(elf, sym); + table->addr = sym->st_value; + + /* + * For ARM Thumb instruction, the bit 0 of st_value is + * set if the symbol is STT_FUNC type. Mask it to get + * the address. + */ + if (is_arm && ELF_ST_TYPE(sym->st_info) == STT_FUNC) + table->addr &= ~1; + + table++; + } + } + + if (table_size != 0) + fatal("%s: size mismatch\n", __func__); +} + +/* + * Do any fixups on the table after sorting. + * For now, this just finds adjacent entries which have + * the same section_index and addr, and it propagates + * the first symbol_index over the subsequent entries, + * so that only one symbol_index is seen for any given + * section_index and addr. This ensures that whether + * we're looking at an address from "above" or "below" + * that we see the same symbol_index. + * This does leave some duplicate entries in the table; + * in practice, these are a small fraction of the + * total number of entries, and they are harmless to + * the binary search algorithm other than a few occasional + * unnecessary comparisons. + */ +static void symsearch_fixup(struct syminfo *table, unsigned int table_size) +{ + /* Don't look at index 0, it will never change. */ + for (unsigned int i = 1; i < table_size; i++) { + if (table[i].addr == table[i - 1].addr && + table[i].section_index == table[i - 1].section_index) { + table[i].symbol_index = table[i - 1].symbol_index; + } + } +} + +void symsearch_init(struct elf_info *elf) +{ + unsigned int table_size = symbol_count(elf); + + elf->symsearch = NOFAIL(malloc(sizeof(struct symsearch) + + sizeof(struct syminfo) * table_size)); + elf->symsearch->table_size = table_size; + + symsearch_populate(elf, elf->symsearch->table, table_size); + qsort(elf->symsearch->table, table_size, + sizeof(struct syminfo), syminfo_compare); + + symsearch_fixup(elf->symsearch->table, table_size); +} + +void symsearch_finish(struct elf_info *elf) +{ + free(elf->symsearch); + elf->symsearch = NULL; +} + +/* + * Find the syminfo which is in secndx and "nearest" to addr. + * allow_negative: allow returning a symbol whose address is > addr. + * min_distance: ignore symbols which are further away than this. + * + * Returns a pointer into the symbol table for success. + * Returns NULL if no legal symbol is found within the requested range. + */ +Elf_Sym *symsearch_find_nearest(struct elf_info *elf, Elf_Addr addr, + unsigned int secndx, bool allow_negative, + Elf_Addr min_distance) +{ + unsigned int hi = elf->symsearch->table_size; + unsigned int lo = 0; + struct syminfo *table = elf->symsearch->table; + struct syminfo target; + + target.addr = addr; + target.section_index = secndx; + target.symbol_index = ~0; /* compares greater than any actual index */ + while (hi > lo) { + unsigned int mid = lo + (hi - lo) / 2; /* Avoids overflow */ + + if (syminfo_compare(&table[mid], &target) > 0) + hi = mid; + else + lo = mid + 1; + } + + /* + * table[hi], if it exists, is the first entry in the array which + * lies beyond target. table[hi - 1], if it exists, is the last + * entry in the array which comes before target, including the + * case where it perfectly matches the section and the address. + * + * Note -- if the address we're looking up falls perfectly + * in the middle of two symbols, this is written to always + * prefer the symbol with the lower address. + */ + Elf_Sym *result = NULL; + + if (allow_negative && + hi < elf->symsearch->table_size && + table[hi].section_index == secndx && + table[hi].addr - addr <= min_distance) { + min_distance = table[hi].addr - addr; + result = &elf->symtab_start[table[hi].symbol_index]; + } + if (hi > 0 && + table[hi - 1].section_index == secndx && + addr - table[hi - 1].addr <= min_distance) { + result = &elf->symtab_start[table[hi - 1].symbol_index]; + } + return result; +} diff --git a/scripts/package/mkspec b/scripts/package/mkspec index d41608efb747..ce201bfa8377 100755 --- a/scripts/package/mkspec +++ b/scripts/package/mkspec @@ -9,6 +9,12 @@ # Patched for non-x86 by Opencon (L) 2002 <opencon@rio.skydome.net> # +output=$1 + +mkdir -p "$(dirname "${output}")" + +exec >"${output}" + if grep -q CONFIG_MODULES=y include/config/auto.conf; then echo '%define with_devel %{?_without_devel: 0} %{?!_without_devel: 1}' else diff --git a/scripts/pahole-flags.sh b/scripts/pahole-flags.sh deleted file mode 100755 index 728d55190d97..000000000000 --- a/scripts/pahole-flags.sh +++ /dev/null @@ -1,30 +0,0 @@ -#!/bin/sh -# SPDX-License-Identifier: GPL-2.0 - -extra_paholeopt= - -if ! [ -x "$(command -v ${PAHOLE})" ]; then - exit 0 -fi - -pahole_ver=$($(dirname $0)/pahole-version.sh ${PAHOLE}) - -if [ "${pahole_ver}" -ge "118" ] && [ "${pahole_ver}" -le "121" ]; then - # pahole 1.18 through 1.21 can't handle zero-sized per-CPU vars - extra_paholeopt="${extra_paholeopt} --skip_encoding_btf_vars" -fi -if [ "${pahole_ver}" -ge "121" ]; then - extra_paholeopt="${extra_paholeopt} --btf_gen_floats" -fi -if [ "${pahole_ver}" -ge "122" ]; then - extra_paholeopt="${extra_paholeopt} -j" -fi -if [ "${pahole_ver}" -ge "124" ]; then - # see PAHOLE_HAS_LANG_EXCLUDE - extra_paholeopt="${extra_paholeopt} --lang_exclude=rust" -fi -if [ "${pahole_ver}" -ge "125" ]; then - extra_paholeopt="${extra_paholeopt} --skip_encoding_btf_inconsistent_proto --btf_gen_optimized" -fi - -echo ${extra_paholeopt} diff --git a/scripts/remove-stale-files b/scripts/remove-stale-files index 8b1a636f8543..385610fe3936 100755 --- a/scripts/remove-stale-files +++ b/scripts/remove-stale-files @@ -38,4 +38,4 @@ rm -rf include/ksym find . -name '*.usyms' | xargs rm -f -rm -f binkernel.spec +rm -f *.spec diff --git a/scripts/show_delta b/scripts/show_delta index 28e67e178194..291ad65e3089 100755 --- a/scripts/show_delta +++ b/scripts/show_delta @@ -125,4 +125,5 @@ def main(): for line in lines: print (convert_line(line, base_time),) -main() +if __name__ == "__main__": + main() |