The following commit has been merged into the x86/core branch of tip: Commit-ID: aef0f13e96db08f31be6b96d28e761df46d86ff4 Gitweb: https://git.kernel.org/tip/aef0f13e96db08f31be6b96d28e761df46d86ff4 Author: Peter Zijlstra <pet...@infradead.org> AuthorDate: Fri, 26 Mar 2021 16:12:08 +01:00 Committer: Borislav Petkov <b...@suse.de> CommitterDate: Thu, 01 Apr 2021 13:01:15 +02:00
objtool: Implicitly create reloc sections Have elf_add_reloc() create the relocation section implicitly. Suggested-by: Josh Poimboeuf <jpoim...@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org> Signed-off-by: Borislav Petkov <b...@suse.de> Reviewed-by: Miroslav Benes <mbe...@suse.cz> Link: https://lkml.kernel.org/r/20210326151259.880174...@infradead.org --- tools/objtool/check.c | 6 ------ tools/objtool/elf.c | 9 ++++++++- tools/objtool/include/objtool/elf.h | 1 - tools/objtool/orc_gen.c | 2 -- 4 files changed, 8 insertions(+), 10 deletions(-) diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 61fe29a..600fa67 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -459,9 +459,6 @@ static int create_static_call_sections(struct objtool_file *file) if (!sec) return -1; - if (!elf_create_reloc_section(file->elf, sec, SHT_RELA)) - return -1; - idx = 0; list_for_each_entry(insn, &file->static_call_list, static_call_node) { @@ -547,9 +544,6 @@ static int create_mcount_loc_sections(struct objtool_file *file) if (!sec) return -1; - if (!elf_create_reloc_section(file->elf, sec, SHT_RELA)) - return -1; - idx = 0; list_for_each_entry(insn, &file->mcount_loc_list, mcount_loc_node) { diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c index 0ab52ac..7b65ae3 100644 --- a/tools/objtool/elf.c +++ b/tools/objtool/elf.c @@ -447,11 +447,18 @@ err: return -1; } +static struct section *elf_create_reloc_section(struct elf *elf, + struct section *base, + int reltype); + int elf_add_reloc(struct elf *elf, struct section *sec, unsigned long offset, unsigned int type, struct symbol *sym, int addend) { struct reloc *reloc; + if (!sec->reloc && !elf_create_reloc_section(elf, sec, SHT_RELA)) + return -1; + reloc = malloc(sizeof(*reloc)); if (!reloc) { perror("malloc"); @@ -829,7 +836,7 @@ static struct section *elf_create_rela_reloc_section(struct elf *elf, struct sec return sec; } -struct section *elf_create_reloc_section(struct elf *elf, +static struct section *elf_create_reloc_section(struct elf *elf, struct section *base, int reltype) { diff --git a/tools/objtool/include/objtool/elf.h b/tools/objtool/include/objtool/elf.h index 825ad32..463f329 100644 --- a/tools/objtool/include/objtool/elf.h +++ b/tools/objtool/include/objtool/elf.h @@ -122,7 +122,6 @@ static inline u32 reloc_hash(struct reloc *reloc) struct elf *elf_open_read(const char *name, int flags); struct section *elf_create_section(struct elf *elf, const char *name, unsigned int sh_flags, size_t entsize, int nr); -struct section *elf_create_reloc_section(struct elf *elf, struct section *base, int reltype); int elf_add_reloc(struct elf *elf, struct section *sec, unsigned long offset, unsigned int type, struct symbol *sym, int addend); diff --git a/tools/objtool/orc_gen.c b/tools/objtool/orc_gen.c index 1b57be6..dc9b7dd 100644 --- a/tools/objtool/orc_gen.c +++ b/tools/objtool/orc_gen.c @@ -225,8 +225,6 @@ int orc_create(struct objtool_file *file) sec = elf_create_section(file->elf, ".orc_unwind_ip", 0, sizeof(int), nr); if (!sec) return -1; - if (!elf_create_reloc_section(file->elf, sec, SHT_RELA)) - return -1; /* Write ORC entries to sections: */ list_for_each_entry(entry, &orc_list, list) {
