[PATCH v4 07/15] objtool: Merge mark_func_jump_tables() and add_func_jump_tables()

From: Christophe Leroy
Date: Tue Jul 11 2023 - 12:11:07 EST


Those two functions loop over the instructions of a function.
Merge the two loops in order to ease enhancement of table end
in a following patch.

Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
---
tools/objtool/check.c | 22 ++++++----------------
1 file changed, 6 insertions(+), 16 deletions(-)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 5a6a87ddbf27..d51f47c4a3bd 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -2097,11 +2097,12 @@ static struct reloc *find_jump_table(struct objtool_file *file,
* First pass: Mark the head of each jump table so that in the next pass,
* we know when a given jump table ends and the next one starts.
*/
-static void mark_func_jump_tables(struct objtool_file *file,
- struct symbol *func)
+static int mark_add_func_jump_tables(struct objtool_file *file,
+ struct symbol *func)
{
- struct instruction *insn, *last = NULL;
+ struct instruction *insn, *last = NULL, *insn_t1 = NULL, *insn_t2;
struct reloc *reloc;
+ int ret = 0;

func_for_each_insn(file, func, insn) {
if (!last)
@@ -2127,17 +2128,7 @@ static void mark_func_jump_tables(struct objtool_file *file,
reloc = find_jump_table(file, func, insn);
if (reloc)
insn->_jump_table = reloc;
- }
-}
-
-static int add_func_jump_tables(struct objtool_file *file,
- struct symbol *func)
-{
- struct instruction *insn, *insn_t1 = NULL, *insn_t2;
- int ret = 0;
-
- func_for_each_insn(file, func, insn) {
- if (!insn_jump_table(insn))
+ else
continue;

if (!insn_t1) {
@@ -2177,8 +2168,7 @@ static int add_jump_table_alts(struct objtool_file *file)
if (func->type != STT_FUNC)
continue;

- mark_func_jump_tables(file, func);
- ret = add_func_jump_tables(file, func);
+ ret = mark_add_func_jump_tables(file, func);
if (ret)
return ret;
}
--
2.41.0