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linux-sg2042
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x86, relocs: Build separate 32/64-bit tools 

Since the ELF structures and access macros change size based on 32 vs
64 bits, build a separate 32-bit relocs tool (for handling realmode
and 32-bit relocations), and a 64-bit relocs tool (for handling 64-bit
kernel relocations).

Signed-off-by: Kees Cook <keescook@chromium.org>
Link: http://lkml.kernel.org/r/1365797627-20874-5-git-send-email-keescook@chromium.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Kees Cook 2013-04-12 13:13:45 -07:00 committed by H. Peter Anvin
parent 946166af95
commit 17c961f770
4 changed files with 22 additions and 5 deletions
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2
arch/x86/boot/compressed/Makefile
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@ -44,7 +44,7 @@ $(obj)/vmlinux.bin: vmlinux FORCE
targets += $(patsubst $(obj)/%,%,$(VMLINUX_OBJS)) vmlinux.bin.all vmlinux.relocs
CMD_RELOCS = arch/x86/tools/relocs
CMD_RELOCS = arch/x86/tools/relocs_$(BITS)
quiet_cmd_relocs = RELOCS $@
cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $<
$(obj)/vmlinux.relocs: vmlinux FORCE

2
arch/x86/realmode/rm/Makefile
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@ -56,7 +56,7 @@ $(obj)/realmode.bin: $(obj)/realmode.elf $(obj)/realmode.relocs
$(call if_changed,objcopy)
quiet_cmd_relocs = RELOCS $@
cmd_relocs = arch/x86/tools/relocs --realmode $< > $@
cmd_relocs = arch/x86/tools/relocs_32 --realmode $< > $@
targets += realmode.relocs
$(obj)/realmode.relocs: $(obj)/realmode.elf FORCE

3
arch/x86/tools/.gitignore vendored
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@ -1 +1,2 @@
relocs
relocs_32*
relocs_64*

20
arch/x86/tools/Makefile
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@ -37,6 +37,22 @@ $(obj)/test_get_len.o: $(srctree)/arch/x86/lib/insn.c $(srctree)/arch/x86/lib/in
$(obj)/insn_sanity.o: $(srctree)/arch/x86/lib/insn.c $(srctree)/arch/x86/lib/inat.c $(srctree)/arch/x86/include/asm/inat_types.h $(srctree)/arch/x86/include/asm/inat.h $(srctree)/arch/x86/include/asm/insn.h $(objtree)/arch/x86/lib/inat-tables.c
HOSTCFLAGS_relocs_32.o += -DELF_BITS=32
HOSTCFLAGS_relocs_64.o += -DELF_BITS=64
quiet_cmd_cp_reloc = GEN $@
cmd_cp_reloc = cp $< $@
$(obj)/relocs_%.c: $(srctree)/arch/x86/tools/relocs.c
$(call cmd,cp_reloc)
HOST_EXTRACFLAGS += -I$(srctree)/tools/include
hostprogs-y += relocs
relocs: $(obj)/relocs
hostprogs-y += relocs_$(BITS)
relocs_binaries = relocs_$(BITS)
ifeq ($(CONFIG_64BIT),y)
hostprogs-y += relocs_32
relocs_binaries += relocs_32
endif
relocs: $(relocs_binaries)
relocs_32: $(obj)/relocs_32
relocs_64: $(obj)/relocs_64