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linux-yocto/tools/objtool/Build
Josh Poimboeuf 627fce1480 objtool: Add ORC unwind table generation 
Now that objtool knows the states of all registers on the stack for each
instruction, it's straightforward to generate debuginfo for an unwinder
to use.

Instead of generating DWARF, generate a new format called ORC, which is
more suitable for an in-kernel unwinder.  See
Documentation/x86/orc-unwinder.txt for a more detailed description of
this new debuginfo format and why it's preferable to DWARF.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: live-patching@vger.kernel.org
Link: http://lkml.kernel.org/r/c9b9f01ba6c5ed2bdc9bb0957b78167fdbf9632e.1499786555.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-07-18 10:57:43 +02:00

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objtool-y += arch/$(SRCARCH)/ objtool-y += builtin-check.o objtool-y += builtin-orc.o objtool-y += check.o objtool-y += orc_gen.o objtool-y += orc_dump.o objtool-y += elf.o objtool-y += special.o objtool-y += objtool.o

objtool-y += libstring.o objtool-y += str_error_r.o

CFLAGS += -I$(srctree)/tools/lib

$(OUTPUT)libstring.o: ../lib/string.c FORCE $(call rule_mkdir) $(call if_changed_dep,cc_o_c)

$(OUTPUT)str_error_r.o: ../lib/str_error_r.c FORCE $(call rule_mkdir) $(call if_changed_dep,cc_o_c)