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authorJosh Poimboeuf <jpoimboe@redhat.com>2017-07-11 18:33:42 +0300
committerIngo Molnar <mingo@kernel.org>2017-07-18 11:57:43 +0300
commit627fce14809ba5610b0cb476cd0186d3fcedecfc (patch)
tree88b2dec0ddbd243b1f9143ebec36948bb1042677 /tools/objtool/Build
parent5a3cf86978a1ac433407704ec280919751aa2699 (diff)
downloadlinux-627fce14809ba5610b0cb476cd0186d3fcedecfc.tar.xz
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>
Diffstat (limited to 'tools/objtool/Build')
-rw-r--r--tools/objtool/Build3
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/objtool/Build b/tools/objtool/Build
index 6f2e1987c4d9..749becdf5b90 100644
--- a/tools/objtool/Build
+++ b/tools/objtool/Build
@@ -1,6 +1,9 @@
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