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Diffstat (limited to 'tools/objtool/special.c')
-rw-r--r--tools/objtool/special.c53
1 files changed, 20 insertions, 33 deletions
diff --git a/tools/objtool/special.c b/tools/objtool/special.c
index 9c8d827f69af..2a533afbc69a 100644
--- a/tools/objtool/special.c
+++ b/tools/objtool/special.c
@@ -15,7 +15,6 @@
#include <objtool/builtin.h>
#include <objtool/special.h>
#include <objtool/warn.h>
-#include <objtool/endianness.h>
struct special_entry {
const char *sec;
@@ -26,7 +25,7 @@ struct special_entry {
unsigned char key; /* jump_label key */
};
-struct special_entry entries[] = {
+static const struct special_entry entries[] = {
{
.sec = ".altinstructions",
.group = true,
@@ -54,7 +53,7 @@ struct special_entry entries[] = {
{},
};
-void __weak arch_handle_alternative(unsigned short feature, struct special_alt *alt)
+void __weak arch_handle_alternative(struct special_alt *alt)
{
}
@@ -62,10 +61,10 @@ static void reloc_to_sec_off(struct reloc *reloc, struct section **sec,
unsigned long *off)
{
*sec = reloc->sym->sec;
- *off = reloc->sym->offset + reloc->addend;
+ *off = reloc->sym->offset + reloc_addend(reloc);
}
-static int get_alt_entry(struct elf *elf, struct special_entry *entry,
+static int get_alt_entry(struct elf *elf, const struct special_entry *entry,
struct section *sec, int idx,
struct special_alt *alt)
{
@@ -82,31 +81,24 @@ static int get_alt_entry(struct elf *elf, struct special_entry *entry,
entry->orig_len);
alt->new_len = *(unsigned char *)(sec->data->d_buf + offset +
entry->new_len);
- }
-
- if (entry->feature) {
- unsigned short feature;
-
- feature = bswap_if_needed(elf,
- *(unsigned short *)(sec->data->d_buf +
- offset +
- entry->feature));
- arch_handle_alternative(feature, alt);
+ alt->feature = *(unsigned int *)(sec->data->d_buf + offset +
+ entry->feature);
}
orig_reloc = find_reloc_by_dest(elf, sec, offset + entry->orig);
if (!orig_reloc) {
- WARN_FUNC("can't find orig reloc", sec, offset + entry->orig);
+ ERROR_FUNC(sec, offset + entry->orig, "can't find orig reloc");
return -1;
}
reloc_to_sec_off(orig_reloc, &alt->orig_sec, &alt->orig_off);
+ arch_handle_alternative(alt);
+
if (!entry->group || alt->new_len) {
new_reloc = find_reloc_by_dest(elf, sec, offset + entry->new);
if (!new_reloc) {
- WARN_FUNC("can't find new reloc",
- sec, offset + entry->new);
+ ERROR_FUNC(sec, offset + entry->new, "can't find new reloc");
return -1;
}
@@ -122,11 +114,10 @@ static int get_alt_entry(struct elf *elf, struct special_entry *entry,
key_reloc = find_reloc_by_dest(elf, sec, offset + entry->key);
if (!key_reloc) {
- WARN_FUNC("can't find key reloc",
- sec, offset + entry->key);
+ ERROR_FUNC(sec, offset + entry->key, "can't find key reloc");
return -1;
}
- alt->key_addend = key_reloc->addend;
+ alt->key_addend = reloc_addend(key_reloc);
}
return 0;
@@ -139,11 +130,11 @@ static int get_alt_entry(struct elf *elf, struct special_entry *entry,
*/
int special_get_alts(struct elf *elf, struct list_head *alts)
{
- struct special_entry *entry;
+ const struct special_entry *entry;
struct section *sec;
unsigned int nr_entries;
struct special_alt *alt;
- int idx, ret;
+ int idx;
INIT_LIST_HEAD(alts);
@@ -152,27 +143,23 @@ int special_get_alts(struct elf *elf, struct list_head *alts)
if (!sec)
continue;
- if (sec->sh.sh_size % entry->size != 0) {
- WARN("%s size not a multiple of %d",
- sec->name, entry->size);
+ if (sec_size(sec) % entry->size != 0) {
+ ERROR("%s size not a multiple of %d", sec->name, entry->size);
return -1;
}
- nr_entries = sec->sh.sh_size / entry->size;
+ nr_entries = sec_size(sec) / entry->size;
for (idx = 0; idx < nr_entries; idx++) {
alt = malloc(sizeof(*alt));
if (!alt) {
- WARN("malloc failed");
+ ERROR_GLIBC("malloc failed");
return -1;
}
memset(alt, 0, sizeof(*alt));
- ret = get_alt_entry(elf, entry, sec, idx, alt);
- if (ret > 0)
- continue;
- if (ret < 0)
- return ret;
+ if (get_alt_entry(elf, entry, sec, idx, alt))
+ return -1;
list_add_tail(&alt->list, alts);
}