Re: [RFC PATCH v3 00/12] objtool: Enable and implement --mcount option on powerpc
From: Christophe Leroy
Date: Fri Jul 08 2022 - 11:43:07 EST
Le 08/07/2022 à 17:06, Christophe Leroy a écrit :
Le 24/06/2022 à 20:32, Sathvika Vasireddy a écrit :
These patches are rebased on top of objtool/core
branch of the tip tree, and are tested on
ppc64le with ppc64le_defconfig.
Seems like objtool/core has been merged in 5.19. I was able to apply
your series on top of powerpc/merge branch. Only a small conflict with
patch "objtool: Add --mnop as an option to --mcount" because of commit
b42d23065024 ("kbuild: factor out the common objtool arguments")
In order to build, you will also need the following new file:
diff --git a/arch/powerpc/include/asm/asm.h b/arch/powerpc/include/asm/asm.h
new file mode 100644
index 000000000000..86f46b604e9a
--- /dev/null
+++ b/arch/powerpc/include/asm/asm.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_POWERPC_ASM_H
+#define _ASM_POWERPC_ASM_H
+
+#define _ASM_PTR " .long "
+
+#endif /* _ASM_POWERPC_ASM_H */
Christophe Leroy (3):
objtool: Fix SEGFAULT
objtool: Use target file endianness instead of a compiled constant
objtool: Use target file class size instead of a compiled constant
Sathvika Vasireddy(9):
objtool: Add --mnop as an option to --mcount
powerpc: Skip objtool from running on VDSO files
objtool: Read special sections with alts only when specific options
are selected
objtool: Use macros to define arch specific reloc types
objtool: Add arch specific function arch_ftrace_match()
objtool/powerpc: Enable objtool to be built on ppc
objtool/powerpc: Add --mcount specific implementation
powerpc: Remove unreachable() from WARN_ON()
objtool/powerpc: Fix unannotated intra-function call warnings
Makefile | 4 +-
arch/powerpc/Kconfig | 2 +
arch/powerpc/include/asm/bug.h | 1 -
arch/powerpc/kernel/entry_64.S | 2 +
arch/powerpc/kernel/exceptions-64s.S | 7 +-
arch/powerpc/kernel/head_64.S | 7 +-
arch/powerpc/kernel/misc_64.S | 4 +-
arch/powerpc/kernel/vdso/Makefile | 2 +
arch/powerpc/kernel/vector.S | 4 +-
arch/powerpc/kvm/book3s_hv_interrupts.S | 4 +-
arch/powerpc/kvm/book3s_hv_rmhandlers.S | 25 +++--
arch/x86/Kconfig | 1 +
scripts/Makefile.build | 1 +
tools/objtool/arch/powerpc/Build | 2 +
tools/objtool/arch/powerpc/decode.c | 96 +++++++++++++++++++
.../arch/powerpc/include/arch/cfi_regs.h | 11 +++
tools/objtool/arch/powerpc/include/arch/elf.h | 10 ++
.../arch/powerpc/include/arch/special.h | 21 ++++
tools/objtool/arch/powerpc/special.c | 19 ++++
tools/objtool/arch/x86/decode.c | 8 ++
tools/objtool/arch/x86/include/arch/elf.h | 2 +
.../arch/x86/include/arch/endianness.h | 9 --
tools/objtool/builtin-check.c | 14 +++
tools/objtool/check.c | 51 +++++-----
tools/objtool/elf.c | 8 +-
tools/objtool/include/objtool/arch.h | 2 +
tools/objtool/include/objtool/builtin.h | 1 +
tools/objtool/include/objtool/elf.h | 8 ++
tools/objtool/include/objtool/endianness.h | 32 +++----
tools/objtool/orc_dump.c | 11 ++-
tools/objtool/orc_gen.c | 4 +-
tools/objtool/special.c | 3 +-
32 files changed, 305 insertions(+), 71 deletions(-)
create mode 100644 tools/objtool/arch/powerpc/Build
create mode 100644 tools/objtool/arch/powerpc/decode.c
create mode 100644 tools/objtool/arch/powerpc/include/arch/cfi_regs.h
create mode 100644 tools/objtool/arch/powerpc/include/arch/elf.h
create mode 100644 tools/objtool/arch/powerpc/include/arch/special.h
create mode 100644 tools/objtool/arch/powerpc/special.c
delete mode 100644 tools/objtool/arch/x86/include/arch/endianness.h