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36b2f3aefc
The vdso linker script is preprocessed on demand.
Adding it to 'targets' is enough to include the .cmd file.
This commit applies the previous change to parisc, which added the
vdso support after commit 887af6d7c9 ("arch: vdso: add vdso linker
script to 'targets' instead of extra-y").
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Helge Deller <deller@gmx.de>
67 lines
2.0 KiB
Makefile
67 lines
2.0 KiB
Makefile
# Include the generic Makefile to check the built vdso.
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include $(srctree)/lib/vdso/Makefile
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KCOV_INSTRUMENT := n
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# Disable gcov profiling, ubsan and kasan for VDSO code
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GCOV_PROFILE := n
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UBSAN_SANITIZE := n
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KASAN_SANITIZE := n
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KCSAN_SANITIZE := n
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obj-vdso32 = note.o sigtramp.o restart_syscall.o
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obj-cvdso32 = vdso32_generic.o
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# Build rules
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targets := $(obj-vdso32) $(obj-cvdso32) vdso32.so
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obj-vdso32 := $(addprefix $(obj)/, $(obj-vdso32))
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obj-cvdso32 := $(addprefix $(obj)/, $(obj-cvdso32))
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VDSO_CFLAGS_REMOVE := -pg $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_vdso32_generic.o = $(VDSO_CFLAGS_REMOVE)
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ccflags-y := -shared -fno-common -fbuiltin -mno-fast-indirect-calls -O2 -mno-long-calls
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# -march=1.1 -mschedule=7100LC
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ccflags-y += -nostdlib -Wl,-soname=linux-vdso32.so.1 \
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$(call ld-option, -Wl$(comma)--hash-style=sysv)
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asflags-y := -D__VDSO32__ -s
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KBUILD_AFLAGS += -DBUILD_VDSO
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KBUILD_CFLAGS += -DBUILD_VDSO -DDISABLE_BRANCH_PROFILING
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VDSO_LIBGCC := $(shell $(CROSS32CC) -print-libgcc-file-name)
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obj-y += vdso32_wrapper.o
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targets += vdso32.lds
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CPPFLAGS_vdso32.lds += -P -C # -U$(ARCH)
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$(obj)/vdso32_wrapper.o : $(obj)/vdso32.so FORCE
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# Force dependency (incbin is bad)
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# link rule for the .so file, .lds has to be first
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$(obj)/vdso32.so: $(obj)/vdso32.lds $(obj-vdso32) $(obj-cvdso32) $(VDSO_LIBGCC) FORCE
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$(call if_changed,vdso32ld)
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# assembly rules for the .S files
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$(obj-vdso32): %.o: %.S FORCE
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$(call if_changed_dep,vdso32as)
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$(obj-cvdso32): %.o: %.c FORCE
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$(call if_changed_dep,vdso32cc)
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# actual build commands
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quiet_cmd_vdso32ld = VDSO32L $@
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cmd_vdso32ld = $(CROSS32CC) $(c_flags) -Wl,-T $(filter-out FORCE, $^) -o $@
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quiet_cmd_vdso32as = VDSO32A $@
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cmd_vdso32as = $(CROSS32CC) $(a_flags) -c -o $@ $<
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quiet_cmd_vdso32cc = VDSO32C $@
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cmd_vdso32cc = $(CROSS32CC) $(c_flags) -c -o $@ $<
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# Generate VDSO offsets using helper script
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gen-vdsosym := $(src)/gen_vdso_offsets.sh
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quiet_cmd_vdsosym = VDSOSYM $@
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cmd_vdsosym = $(NM) $< | $(gen-vdsosym) | LC_ALL=C sort > $@
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include/generated/vdso32-offsets.h: $(obj)/vdso32.so FORCE
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$(call if_changed,vdsosym)
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