lkml.org 
[lkml]   [2022]   [May]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC PATCH v1 2/4] objtool: Add R_REL32 macro
Date
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
\
 
 \ /
  Last update: 2022-05-25 18:01    [W:0.045 / U:0.628 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site