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-rw-r--r--scripts/Makefile.vmlinux_o47
1 files changed, 32 insertions, 15 deletions
diff --git a/scripts/Makefile.vmlinux_o b/scripts/Makefile.vmlinux_o
index 84019814f33f..0edfdb40364b 100644
--- a/scripts/Makefile.vmlinux_o
+++ b/scripts/Makefile.vmlinux_o
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
PHONY := __default
-__default: vmlinux.o
+__default: vmlinux.o modules.builtin.modinfo modules.builtin
include include/config/auto.conf
include $(srctree)/scripts/Kbuild.include
@@ -18,7 +18,7 @@ quiet_cmd_gen_initcalls_lds = GEN $@
$(PERL) $(real-prereqs) > $@
.tmp_initcalls.lds: $(srctree)/scripts/generate_initcall_order.pl \
- $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
+ vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE
$(call if_changed,gen_initcalls_lds)
targets := .tmp_initcalls.lds
@@ -35,18 +35,11 @@ endif
objtool-enabled := $(or $(delay-objtool),$(CONFIG_NOINSTR_VALIDATION))
-# Reuse objtool_args defined in scripts/Makefile.lib if LTO or IBT is enabled.
-#
-# Add some more flags as needed.
-# --no-unreachable and --link might be added twice, but it is fine.
-#
-# Expand objtool_args to a simple variable to avoid circular reference.
+vmlinux-objtool-args-$(delay-objtool) += $(objtool-args-y)
+vmlinux-objtool-args-$(CONFIG_GCOV_KERNEL) += --no-unreachable
+vmlinux-objtool-args-$(CONFIG_NOINSTR_VALIDATION) += --noinstr $(if $(CONFIG_CPU_UNRET_ENTRY), --unret)
-objtool_args := \
- $(if $(delay-objtool),$(objtool_args)) \
- $(if $(CONFIG_NOINSTR_VALIDATION), --noinstr $(if $(CONFIG_CPU_UNRET_ENTRY), --unret)) \
- $(if $(CONFIG_GCOV_KERNEL), --no-unreachable) \
- --link
+objtool-args = $(vmlinux-objtool-args-y) --link
# Link of vmlinux.o used for section mismatch analysis
# ---------------------------------------------------------------------------
@@ -55,7 +48,7 @@ quiet_cmd_ld_vmlinux.o = LD $@
cmd_ld_vmlinux.o = \
$(LD) ${KBUILD_LDFLAGS} -r -o $@ \
$(addprefix -T , $(initcalls-lds)) \
- --whole-archive $(KBUILD_VMLINUX_OBJS) --no-whole-archive \
+ --whole-archive vmlinux.a --no-whole-archive \
--start-group $(KBUILD_VMLINUX_LIBS) --end-group \
$(cmd_objtool)
@@ -64,11 +57,35 @@ define rule_ld_vmlinux.o
$(call cmd,gen_objtooldep)
endef
-vmlinux.o: $(initcalls-lds) $(KBUILD_VMLINUX_OBJS) $(KBUILD_VMLINUX_LIBS) FORCE
+vmlinux.o: $(initcalls-lds) vmlinux.a $(KBUILD_VMLINUX_LIBS) FORCE
$(call if_changed_rule,ld_vmlinux.o)
targets += vmlinux.o
+# module.builtin.modinfo
+# ---------------------------------------------------------------------------
+
+OBJCOPYFLAGS_modules.builtin.modinfo := -j .modinfo -O binary
+
+targets += modules.builtin.modinfo
+modules.builtin.modinfo: vmlinux.o FORCE
+ $(call if_changed,objcopy)
+
+# module.builtin
+# ---------------------------------------------------------------------------
+
+# The second line aids cases where multiple modules share the same object.
+
+quiet_cmd_modules_builtin = GEN $@
+ cmd_modules_builtin = \
+ tr '\0' '\n' < $< | \
+ sed -n 's/^[[:alnum:]:_]*\.file=//p' | \
+ tr ' ' '\n' | uniq | sed -e 's:^:kernel/:' -e 's/$$/.ko/' > $@
+
+targets += modules.builtin
+modules.builtin: modules.builtin.modinfo FORCE
+ $(call if_changed,modules_builtin)
+
# Add FORCE to the prequisites of a target to force it to be always rebuilt.
# ---------------------------------------------------------------------------