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[RFC,v3,08/22] objtool: Introduce STATIC_CHECK

Message ID 20230202074036.507249-9-madvenka@linux.microsoft.com (mailing list archive)
State New, archived
Headers show
Series arm64: livepatch: Use ORC for dynamic frame pointer validation | expand

Commit Message

Madhavan T. Venkataraman Feb. 2, 2023, 7:40 a.m. UTC 
From: "Madhavan T. Venkataraman" <madvenka@linux.microsoft.com>

Objtool currently implements static stack validation. Another method called
dynamic validation can be supported for other architectures.

Define STATIC_CHECK to select the files required for static validation
in objtool build.

Signed-off-by: Madhavan T. Venkataraman <madvenka@linux.microsoft.com>
---
 tools/objtool/Build    | 6 +++---
 tools/objtool/Makefile | 3 ++-
 2 files changed, 5 insertions(+), 4 deletions(-)
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Patch

diff --git a/tools/objtool/Build b/tools/objtool/Build
index c4666d0b40ba..974290dc4aac 100644
--- a/tools/objtool/Build
+++ b/tools/objtool/Build
@@ -2,13 +2,13 @@  objtool-y += arch/$(SRCARCH)/
 
 objtool-y += weak.o
 
-objtool-y += check.o
-objtool-y += special.o
+objtool-$(STATIC_CHECK) += check.o
+objtool-$(STATIC_CHECK) += special.o
 objtool-y += builtin-check.o
 objtool-y += cfi.o
 objtool-y += insn.o
 objtool-y += decode.o
-objtool-y += unwind_hints.o
+objtool-$(STATIC_CHECK) += unwind_hints.o
 objtool-y += elf.o
 objtool-y += objtool.o
 
diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
index a3a9cc24e0e3..797d1ea02db0 100644
--- a/tools/objtool/Makefile
+++ b/tools/objtool/Makefile
@@ -43,9 +43,10 @@  BUILD_ORC := n
 
 ifeq ($(SRCARCH),x86)
 	BUILD_ORC := y
+	STATIC_CHECK := y
 endif
 
-export BUILD_ORC
+export BUILD_ORC STATIC_CHECK
 export srctree OUTPUT CFLAGS SRCARCH AWK
 include $(srctree)/tools/build/Makefile.include