diff mbox series

[v3,07/15] objtool: Allow an architecture to disable objtool on ASM files

Message ID 2f3d565c93506ce4ea60258bbebd5150b6d7510e.1687539638.git.christophe.leroy@csgroup.eu (mailing list archive)
State Superseded
Headers show
Series powerpc/objtool: uaccess validation for PPC32 (v3) | expand

Commit Message

Christophe Leroy June 23, 2023, 5:05 p.m. UTC 
Supporting objtool on ASM files requires quite an effort.

Features like UACCESS validation don't require ASM files validation.

In order to allow architectures to enable objtool validation
without spending unnecessary effort on cleaning up ASM files,
provide an option to disable objtool validation on ASM files.

Suggested-by: Naveen N Rao <naveen@kernel.org>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
 arch/Kconfig           | 5 +++++
 scripts/Makefile.build | 4 ++++
 2 files changed, 9 insertions(+)
diff mbox series

Patch

diff --git a/arch/Kconfig b/arch/Kconfig
index 205fd23e0cad..dd66b884bcfb 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -1091,6 +1091,11 @@  config ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
 config HAVE_OBJTOOL
 	bool
 
+config ARCH_OBJTOOL_SKIP_ASM
+	bool
+	help
+	  Architecture doesn't support objtool on ASM files
+
 config HAVE_JUMP_LABEL_HACK
 	bool
 
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 9f94fc83f086..878027cf4faf 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -359,7 +359,11 @@  $(obj)/%.s: $(src)/%.S FORCE
 	$(call if_changed_dep,cpp_s_S)
 
 quiet_cmd_as_o_S = AS $(quiet_modtag)  $@
+ifndef CONFIG_ARCH_OBJTOOL_SKIP_ASM
       cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< $(cmd_objtool)
+else
+      cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
+endif
 
 ifdef CONFIG_ASM_MODVERSIONS