From b23cc71c62747f2e4c3e56138872cf47e1294f8a Mon Sep 17 00:00:00 2001 From: Josh Poimboeuf Date: Fri, 18 Dec 2020 14:19:32 -0600 Subject: objtool: Add 'alt_group' struct Create a new struct associated with each group of alternatives instructions. This will help with the removal of fake jumps, and more importantly with adding support for stack layout changes in alternatives. Signed-off-by: Josh Poimboeuf --- tools/objtool/include/objtool/check.h | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) (limited to 'tools/objtool/include') diff --git a/tools/objtool/include/objtool/check.h b/tools/objtool/include/objtool/check.h index df1e3e8ed204..7893e9783084 100644 --- a/tools/objtool/include/objtool/check.h +++ b/tools/objtool/include/objtool/check.h @@ -19,6 +19,17 @@ struct insn_state { s8 instr; }; +struct alt_group { + /* + * Pointer from a replacement group to the original group. NULL if it + * *is* the original group. + */ + struct alt_group *orig_group; + + /* First and last instructions in the group */ + struct instruction *first_insn, *last_insn; +}; + struct instruction { struct list_head list; struct hlist_node hash; @@ -34,7 +45,7 @@ struct instruction { s8 instr; u8 visited; u8 ret_offset; - int alt_group; + struct alt_group *alt_group; struct symbol *call_dest; struct instruction *jump_dest; struct instruction *first_jump_src; -- cgit v1.2.3