@@ -535,6 +535,11 @@ static struct ins instructions_arm[] = {
{ .name = "retq", .ops = &ret_ops, },
};
+struct instructions_powerpc {
+ struct ins *ins;
+ struct list_head list;
+};
+
static int ins__key_cmp(const void *name, const void *insp)
{
const struct ins *ins = insp;
@@ -550,6 +555,115 @@ static int ins__cmp(const void *a, const void *b)
return strcmp(ia->name, ib->name);
}
+static struct ins *list_add__ins_powerpc(struct instructions_powerpc *head,
+ const char *name, struct ins_ops *ops)
+{
+ struct instructions_powerpc *ins_powerpc;
+ struct ins *ins;
+
+ ins = zalloc(sizeof(struct ins));
+ if (!ins)
+ return NULL;
+
+ ins_powerpc = zalloc(sizeof(struct instructions_powerpc));
+ if (!ins_powerpc)
+ goto out_free_ins;
+
+ ins->name = strdup(name);
+ if (!ins->name)
+ goto out_free_ins_power;
+
+ ins->ops = ops;
+ ins_powerpc->ins = ins;
+ list_add_tail(&(ins_powerpc->list), &(head->list));
+
+ return ins;
+
+out_free_ins_power:
+ zfree(&ins_powerpc);
+out_free_ins:
+ zfree(&ins);
+ return NULL;
+}
+
+static struct ins *list_search__ins_powerpc(struct instructions_powerpc *head,
+ const char *name)
+{
+ struct instructions_powerpc *pos;
+
+ list_for_each_entry(pos, &head->list, list) {
+ if (!strcmp(pos->ins->name, name))
+ return pos->ins;
+ }
+ return NULL;
+}
+
+static struct ins *ins__find_powerpc(const char *name)
+{
+ int i;
+ struct ins *ins;
+ struct ins_ops *ops;
+ static struct instructions_powerpc head;
+ static bool list_initialized;
+
+ /*
+ * - Interested only if instruction starts with 'b'.
+ * - Few start with 'b', but aren't branch instructions.
+ */
+ if (name[0] != 'b' ||
+ !strncmp(name, "bcd", 3) ||
+ !strncmp(name, "brinc", 5) ||
+ !strncmp(name, "bper", 4))
+ return NULL;
+
+ if (!list_initialized) {
+ INIT_LIST_HEAD(&head.list);
+ list_initialized = true;
+ }
+
+ /*
+ * Return if we already have object of 'struct ins' for this instruction
+ */
+ ins = list_search__ins_powerpc(&head, name);
+ if (ins)
+ return ins;
+
+ ops = &jump_ops;
+
+ i = strlen(name) - 1;
+ if (i < 0)
+ return NULL;
+
+ /* ignore optional hints at the end of the instructions */
+ if (name[i] == '+' || name[i] == '-')
+ i--;
+
+ if (name[i] == 'l' || (name[i] == 'a' && name[i-1] == 'l')) {
+ /*
+ * if the instruction ends up with 'l' or 'la', then
+ * those are considered 'calls' since they update LR.
+ * ... except for 'bnl' which is branch if not less than
+ * and the absolute form of the same.
+ */
+ if (strcmp(name, "bnl") && strcmp(name, "bnl+") &&
+ strcmp(name, "bnl-") && strcmp(name, "bnla") &&
+ strcmp(name, "bnla+") && strcmp(name, "bnla-"))
+ ops = &call_ops;
+ }
+ if (name[i] == 'r' && name[i-1] == 'l')
+ /*
+ * instructions ending with 'lr' are considered to be
+ * return instructions
+ */
+ ops = &ret_ops;
+
+ /*
+ * Add instruction to list so next time no need to
+ * allocate memory for it.
+ */
+ return list_add__ins_powerpc(&head, name, ops);
+}
+
static void ins__sort(struct ins *instructions, int nmemb)
{
qsort(instructions, nmemb, sizeof(struct ins), ins__cmp);
@@ -585,6 +699,8 @@ static struct ins *ins__find(const char *name, const char *norm_arch)
} else if (!strcmp(norm_arch, NORM_ARM)) {
instructions = instructions_arm;
nmemb = ARRAY_SIZE(instructions_arm);
+ } else if (!strcmp(norm_arch, NORM_POWERPC)) {
+ return ins__find_powerpc(name);
} else {
pr_err("perf annotate not supported by %s arch\n", norm_arch);
return NULL;