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Diffstat (limited to 'tools/objtool/builtin-check.c')
-rw-r--r--tools/objtool/builtin-check.c18
1 files changed, 12 insertions, 6 deletions
diff --git a/tools/objtool/builtin-check.c b/tools/objtool/builtin-check.c
index cf1e48dbfa97..bfeee227aaab 100644
--- a/tools/objtool/builtin-check.c
+++ b/tools/objtool/builtin-check.c
@@ -34,6 +34,8 @@
#include "arch.h"
#include "warn.h"
+#include <linux/hashtable.h>
+
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#define STATE_FP_SAVED 0x1
@@ -42,6 +44,7 @@
struct instruction {
struct list_head list;
+ struct hlist_node hash;
struct section *sec;
unsigned long offset;
unsigned int len, state;
@@ -61,7 +64,8 @@ struct alternative {
struct objtool_file {
struct elf *elf;
struct list_head insn_list;
- struct section *rodata;
+ DECLARE_HASHTABLE(insn_hash, 16);
+ struct section *rodata, *whitelist;
};
const char *objname;
@@ -72,7 +76,7 @@ static struct instruction *find_insn(struct objtool_file *file,
{
struct instruction *insn;
- list_for_each_entry(insn, &file->insn_list, list)
+ hash_for_each_possible(file->insn_hash, insn, hash, offset)
if (insn->sec == sec && insn->offset == offset)
return insn;
@@ -111,14 +115,12 @@ static struct instruction *next_insn_same_sec(struct objtool_file *file,
*/
static bool ignore_func(struct objtool_file *file, struct symbol *func)
{
- struct section *macro_sec;
struct rela *rela;
struct instruction *insn;
/* check for STACK_FRAME_NON_STANDARD */
- macro_sec = find_section_by_name(file->elf, "__func_stack_frame_non_standard");
- if (macro_sec && macro_sec->rela)
- list_for_each_entry(rela, &macro_sec->rela->rela_list, list)
+ if (file->whitelist && file->whitelist->rela)
+ list_for_each_entry(rela, &file->whitelist->rela->rela_list, list)
if (rela->sym->sec == func->sec &&
rela->addend == func->offset)
return true;
@@ -276,6 +278,7 @@ static int decode_instructions(struct objtool_file *file)
return -1;
}
+ hash_add(file->insn_hash, &insn->hash, insn->offset);
list_add_tail(&insn->list, &file->insn_list);
}
}
@@ -729,6 +732,7 @@ static int decode_sections(struct objtool_file *file)
{
int ret;
+ file->whitelist = find_section_by_name(file->elf, "__func_stack_frame_non_standard");
file->rodata = find_section_by_name(file->elf, ".rodata");
ret = decode_instructions(file);
@@ -1091,6 +1095,7 @@ static void cleanup(struct objtool_file *file)
free(alt);
}
list_del(&insn->list);
+ hash_del(&insn->hash);
free(insn);
}
elf_close(file->elf);
@@ -1125,6 +1130,7 @@ int cmd_check(int argc, const char **argv)
}
INIT_LIST_HEAD(&file.insn_list);
+ hash_init(file.insn_hash);
ret = decode_sections(&file);
if (ret < 0)