From: Christophe Leroy <christophe.leroy@csgroup.eu>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
peterz@infradead.org, aik@ozlabs.ru, sv@linux.ibm.com,
rostedt@goodmis.org, jpoimboe@redhat.com,
naveen.n.rao@linux.vnet.ibm.com, mbenes@suse.cz
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [RFC PATCH v1 2/4] objtool: Add R_REL32 macro
Date: Wed, 25 May 2022 17:58:15 +0200 [thread overview]
Message-ID: <35932b18ea948cbc1e7ec9d006e4575641a4daa5.1653494186.git.christophe.leroy@csgroup.eu> (raw)
In-Reply-To: <cover.1653494186.git.christophe.leroy@csgroup.eu>
In order to allow other architectures than x86 to use 32 bits
relative relocations, define a R_REL32 macro that each architecture
will define, in the same way as already done for R_NONE.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
---
tools/objtool/arch/x86/include/arch/elf.h | 1 +
tools/objtool/check.c | 10 +++++-----
tools/objtool/orc_gen.c | 2 +-
3 files changed, 7 insertions(+), 6 deletions(-)
diff --git a/tools/objtool/arch/x86/include/arch/elf.h b/tools/objtool/arch/x86/include/arch/elf.h
index 69cc4264b28a..8aa8c29607da 100644
--- a/tools/objtool/arch/x86/include/arch/elf.h
+++ b/tools/objtool/arch/x86/include/arch/elf.h
@@ -2,5 +2,6 @@
#define _OBJTOOL_ARCH_ELF
#define R_NONE R_X86_64_NONE
+#define R_REL32 R_X86_64_PC32
#endif /* _OBJTOOL_ARCH_ELF */
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 70be5a72e838..1627d14a01c9 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -650,7 +650,7 @@ static int create_static_call_sections(struct objtool_file *file)
/* populate reloc for 'addr' */
if (elf_add_reloc_to_insn(file->elf, sec,
idx * sizeof(struct static_call_site),
- R_X86_64_PC32,
+ R_REL32,
insn->sec, insn->offset))
return -1;
@@ -691,7 +691,7 @@ static int create_static_call_sections(struct objtool_file *file)
/* populate reloc for 'key' */
if (elf_add_reloc(file->elf, sec,
idx * sizeof(struct static_call_site) + 4,
- R_X86_64_PC32, key_sym,
+ R_REL32, key_sym,
is_sibling_call(insn) * STATIC_CALL_SITE_TAIL))
return -1;
@@ -735,7 +735,7 @@ static int create_retpoline_sites_sections(struct objtool_file *file)
if (elf_add_reloc_to_insn(file->elf, sec,
idx * sizeof(int),
- R_X86_64_PC32,
+ R_REL32,
insn->sec, insn->offset)) {
WARN("elf_add_reloc_to_insn: .retpoline_sites");
return -1;
@@ -787,7 +787,7 @@ static int create_ibt_endbr_seal_sections(struct objtool_file *file)
if (elf_add_reloc_to_insn(file->elf, sec,
idx * sizeof(int),
- R_X86_64_PC32,
+ R_REL32,
insn->sec, insn->offset)) {
WARN("elf_add_reloc_to_insn: .ibt_endbr_seal");
return -1;
@@ -3716,7 +3716,7 @@ static int validate_ibt_insn(struct objtool_file *file, struct instruction *insn
continue;
off = reloc->sym->offset;
- if (reloc->type == R_X86_64_PC32 || reloc->type == R_X86_64_PLT32)
+ if (reloc->type == R_REL32 || reloc->type == R_X86_64_PLT32)
off += arch_dest_reloc_offset(reloc->addend);
else
off += reloc->addend;
diff --git a/tools/objtool/orc_gen.c b/tools/objtool/orc_gen.c
index 1f22b7ebae58..49a877b9c879 100644
--- a/tools/objtool/orc_gen.c
+++ b/tools/objtool/orc_gen.c
@@ -101,7 +101,7 @@ static int write_orc_entry(struct elf *elf, struct section *orc_sec,
orc->bp_offset = bswap_if_needed(elf, orc->bp_offset);
/* populate reloc for ip */
- if (elf_add_reloc_to_insn(elf, ip_sec, idx * sizeof(int), R_X86_64_PC32,
+ if (elf_add_reloc_to_insn(elf, ip_sec, idx * sizeof(int), R_REL32,
insn_sec, insn_off))
return -1;
--
2.35.3
next prev parent reply other threads:[~2022-05-25 16:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-25 15:58 [RFC PATCH v1 0/4] Implement inline static calls on PPC32 Christophe Leroy
2022-05-25 15:58 ` [RFC PATCH v1 1/4] Revert "objtool: Enable objtool to run only on files with ftrace enabled" Christophe Leroy
2022-05-25 16:34 ` Peter Zijlstra
2022-05-25 17:03 ` Christophe Leroy
2022-05-25 15:58 ` Christophe Leroy [this message]
2022-05-25 16:40 ` [RFC PATCH v1 2/4] objtool: Add R_REL32 macro Segher Boessenkool
2022-05-25 15:58 ` [RFC PATCH v1 3/4] static_call: Call static_call_init() from start_kernel() Christophe Leroy
2022-05-25 15:58 ` [RFC PATCH v1 4/4] powerpc/static_call: Implement inline static calls Christophe Leroy
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