diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/include/linux/static_call_types.h | 7 | ||||
| -rw-r--r-- | tools/objtool/check.c | 18 |
2 files changed, 20 insertions, 5 deletions
diff --git a/tools/include/linux/static_call_types.h b/tools/include/linux/static_call_types.h index 408d345d83e1..89135bb35bf7 100644 --- a/tools/include/linux/static_call_types.h +++ b/tools/include/linux/static_call_types.h @@ -17,6 +17,13 @@ #define STATIC_CALL_TRAMP_STR(name) __stringify(STATIC_CALL_TRAMP(name)) /* + * Flags in the low bits of static_call_site::key. + */ +#define STATIC_CALL_SITE_TAIL 1UL /* tail call */ +#define STATIC_CALL_SITE_INIT 2UL /* init section */ +#define STATIC_CALL_SITE_FLAGS 3UL + +/* * The static call site table needs to be created by external tooling (objtool * or a compiler plugin). */ diff --git a/tools/objtool/check.c b/tools/objtool/check.c index f8f7a40c6ef3..75d0cd2f9044 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -516,7 +516,7 @@ static int create_static_call_sections(struct objtool_file *file) } memset(reloc, 0, sizeof(*reloc)); reloc->sym = key_sym; - reloc->addend = 0; + reloc->addend = is_sibling_call(insn) ? STATIC_CALL_SITE_TAIL : 0; reloc->type = R_X86_64_PC32; reloc->offset = idx * sizeof(struct static_call_site) + 4; reloc->sec = reloc_sec; @@ -747,6 +747,10 @@ static int add_jump_destinations(struct objtool_file *file) } else { /* external sibling call */ insn->call_dest = reloc->sym; + if (insn->call_dest->static_call_tramp) { + list_add_tail(&insn->static_call_node, + &file->static_call_list); + } continue; } @@ -798,6 +802,10 @@ static int add_jump_destinations(struct objtool_file *file) /* internal sibling call */ insn->call_dest = insn->jump_dest->func; + if (insn->call_dest->static_call_tramp) { + list_add_tail(&insn->static_call_node, + &file->static_call_list); + } } } } @@ -1684,6 +1692,10 @@ static int decode_sections(struct objtool_file *file) if (ret) return ret; + ret = read_static_call_tramps(file); + if (ret) + return ret; + ret = add_jump_destinations(file); if (ret) return ret; @@ -1716,10 +1728,6 @@ static int decode_sections(struct objtool_file *file) if (ret) return ret; - ret = read_static_call_tramps(file); - if (ret) - return ret; - return 0; } |