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-rw-r--r--scripts/Makefile.build17
-rw-r--r--scripts/Makefile.lib8
-rw-r--r--scripts/mod/modpost.c27
3 files changed, 28 insertions, 24 deletions
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index f6152c70f7f4..2e3a10e79ca9 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -258,10 +258,14 @@ ifneq ($(SKIP_STACK_VALIDATION),1)
__objtool_obj := $(objtree)/tools/objtool/objtool
-objtool_args = check
+objtool_args = $(if $(CONFIG_ORC_UNWINDER),orc generate,check)
+
ifndef CONFIG_FRAME_POINTER
objtool_args += --no-fp
endif
+ifdef CONFIG_GCOV_KERNEL
+objtool_args += --no-unreachable
+endif
# 'OBJECT_FILES_NON_STANDARD := y': skip objtool checking for a directory
# 'OBJECT_FILES_NON_STANDARD_foo.o := 'y': skip objtool checking for a file
@@ -276,6 +280,11 @@ objtool_obj = $(if $(patsubst y%,, \
endif # SKIP_STACK_VALIDATION
endif # CONFIG_STACK_VALIDATION
+# Rebuild all objects when objtool changes, or is enabled/disabled.
+objtool_dep = $(objtool_obj) \
+ $(wildcard include/config/orc/unwinder.h \
+ include/config/stack/validation.h)
+
define rule_cc_o_c
$(call echo-cmd,checksrc) $(cmd_checksrc) \
$(call cmd_and_fixdep,cc_o_c) \
@@ -298,13 +307,13 @@ cmd_undef_syms = echo
endif
# Built-in and composite module parts
-$(obj)/%.o: $(src)/%.c $(recordmcount_source) $(objtool_obj) FORCE
+$(obj)/%.o: $(src)/%.c $(recordmcount_source) $(objtool_dep) FORCE
$(call cmd,force_checksrc)
$(call if_changed_rule,cc_o_c)
# Single-part modules are special since we need to mark them in $(MODVERDIR)
-$(single-used-m): $(obj)/%.o: $(src)/%.c $(recordmcount_source) $(objtool_obj) FORCE
+$(single-used-m): $(obj)/%.o: $(src)/%.c $(recordmcount_source) $(objtool_dep) FORCE
$(call cmd,force_checksrc)
$(call if_changed_rule,cc_o_c)
@{ echo $(@:.o=.ko); echo $@; \
@@ -399,7 +408,7 @@ cmd_modversions_S = \
endif
endif
-$(obj)/%.o: $(src)/%.S $(objtool_obj) FORCE
+$(obj)/%.o: $(src)/%.S $(objtool_dep) FORCE
$(call if_changed_rule,as_o_S)
targets += $(real-objs-y) $(real-objs-m) $(lib-y)
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 58c05e5d9870..dcc0d5fdf5a2 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -173,10 +173,10 @@ cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \
ld_flags = $(LDFLAGS) $(ldflags-y)
+DTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes
+
dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \
- -I$(srctree)/arch/$(SRCARCH)/boot/dts \
- -I$(srctree)/scripts/dtc/include-prefixes \
- -I$(srctree)/drivers/of/testcase-data \
+ $(addprefix -I,$(DTC_INCLUDE)) \
-undef -D__DTS__
# Finds the multi-part object the current object will be linked into
@@ -317,7 +317,7 @@ quiet_cmd_dtc = DTC $@
cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
$(DTC) -O dtb -o $@ -b 0 \
- -i $(dir $<) $(DTC_FLAGS) \
+ $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \
-d $(depfile).dtc.tmp $(dtc-tmp) ; \
cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 48397feb08fb..b920d186ad4a 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -261,7 +261,17 @@ static enum export export_no(const char *s)
return export_unknown;
}
-static const char *sec_name(struct elf_info *elf, int secindex);
+static const char *sech_name(struct elf_info *elf, Elf_Shdr *sechdr)
+{
+ return (void *)elf->hdr +
+ elf->sechdrs[elf->secindex_strings].sh_offset +
+ sechdr->sh_name;
+}
+
+static const char *sec_name(struct elf_info *elf, int secindex)
+{
+ return sech_name(elf, &elf->sechdrs[secindex]);
+}
#define strstarts(str, prefix) (strncmp(str, prefix, strlen(prefix)) == 0)
@@ -775,21 +785,6 @@ static const char *sym_name(struct elf_info *elf, Elf_Sym *sym)
return "(unknown)";
}
-static const char *sec_name(struct elf_info *elf, int secindex)
-{
- Elf_Shdr *sechdrs = elf->sechdrs;
- return (void *)elf->hdr +
- elf->sechdrs[elf->secindex_strings].sh_offset +
- sechdrs[secindex].sh_name;
-}
-
-static const char *sech_name(struct elf_info *elf, Elf_Shdr *sechdr)
-{
- return (void *)elf->hdr +
- elf->sechdrs[elf->secindex_strings].sh_offset +
- sechdr->sh_name;
-}
-
/* The pattern is an array of simple patterns.
* "foo" will match an exact string equal to "foo"
* "*foo" will match a string that ends with "foo"
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