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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2020-02-10 12:32:39 -0600 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-02-11 13:36:01 +0100 |
| commit | a22961409c02b93ffa7ed78f67fb57a1ba6c787d (patch) | |
| tree | af0f2971d5aacf5416cfa9ed167d0f9eadcb70ae /tools/objtool | |
| parent | 644592d328370af4b3e027b7b1ae9f81613782d8 (diff) | |
| download | linux-a22961409c02b93ffa7ed78f67fb57a1ba6c787d.tar.gz linux-a22961409c02b93ffa7ed78f67fb57a1ba6c787d.tar.bz2 linux-a22961409c02b93ffa7ed78f67fb57a1ba6c787d.zip | |
objtool: Add is_static_jump() helper
There are several places where objtool tests for a non-dynamic (aka
direct) jump. Move the check to a helper function.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Julien Thierry <jthierry@redhat.com>
Link: https://lkml.kernel.org/r/9b8b438df918276315e4765c60d2587f3c7ad698.1581359535.git.jpoimboe@redhat.com
Diffstat (limited to 'tools/objtool')
| -rw-r--r-- | tools/objtool/check.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 796f6a172efd..9016ae1c0c55 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -97,14 +97,19 @@ static struct instruction *next_insn_same_func(struct objtool_file *file, for (insn = next_insn_same_sec(file, insn); insn; \ insn = next_insn_same_sec(file, insn)) +static bool is_static_jump(struct instruction *insn) +{ + return insn->type == INSN_JUMP_CONDITIONAL || + insn->type == INSN_JUMP_UNCONDITIONAL; +} + static bool is_sibling_call(struct instruction *insn) { /* An indirect jump is either a sibling call or a jump to a table. */ if (insn->type == INSN_JUMP_DYNAMIC) return list_empty(&insn->alts); - if (insn->type != INSN_JUMP_CONDITIONAL && - insn->type != INSN_JUMP_UNCONDITIONAL) + if (!is_static_jump(insn)) return false; /* add_jump_destinations() sets insn->call_dest for sibling calls. */ @@ -553,8 +558,7 @@ static int add_jump_destinations(struct objtool_file *file) unsigned long dest_off; for_each_insn(file, insn) { - if (insn->type != INSN_JUMP_CONDITIONAL && - insn->type != INSN_JUMP_UNCONDITIONAL) + if (!is_static_jump(insn)) continue; if (insn->ignore || insn->offset == FAKE_JUMP_OFFSET) @@ -764,8 +768,7 @@ static int handle_group_alt(struct objtool_file *file, insn->ignore = orig_insn->ignore_alts; insn->func = orig_insn->func; - if (insn->type != INSN_JUMP_CONDITIONAL && - insn->type != INSN_JUMP_UNCONDITIONAL) + if (!is_static_jump(insn)) continue; if (!insn->immediate) |