1 files changed, 174 insertions, 0 deletions

diff --git a/tools/perf/arch/s390/annotate/instructions.c b/tools/perf/arch/s390/annotate/instructions.c
new file mode 100644
index 000000000..cee4e2f7c
--- /dev/null
+++ b/tools/perf/arch/s390/annotate/instructions.c
@@ -0,0 +1,174 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/compiler.h>
+
+static int s390_call__parse(struct arch *arch, struct ins_operands *ops,
+			    struct map_symbol *ms)
+{
+	char *endptr, *tok, *name;
+	struct map *map = ms->map;
+	struct addr_map_symbol target = {
+		.map = map,
+	};
+
+	tok = strchr(ops->raw, ',');
+	if (!tok)
+		return -1;
+
+	ops->target.addr = strtoull(tok + 1, &endptr, 16);
+
+	name = strchr(endptr, '<');
+	if (name == NULL)
+		return -1;
+
+	name++;
+
+	if (arch->objdump.skip_functions_char &&
+	    strchr(name, arch->objdump.skip_functions_char))
+		return -1;
+
+	tok = strchr(name, '>');
+	if (tok == NULL)
+		return -1;
+
+	*tok = '\0';
+	ops->target.name = strdup(name);
+	*tok = '>';
+
+	if (ops->target.name == NULL)
+		return -1;
+	target.addr = map__objdump_2mem(map, ops->target.addr);
+
+	if (map_groups__find_ams(&target) == 0 &&
+	    map__rip_2objdump(target.map, map->map_ip(target.map, target.addr)) == ops->target.addr)
+		ops->target.sym = target.sym;
+
+	return 0;
+}
+
+static int call__scnprintf(struct ins *ins, char *bf, size_t size,
+			   struct ins_operands *ops);
+
+static struct ins_ops s390_call_ops = {
+	.parse	   = s390_call__parse,
+	.scnprintf = call__scnprintf,
+};
+
+static int s390_mov__parse(struct arch *arch __maybe_unused,
+			   struct ins_operands *ops,
+			   struct map_symbol *ms __maybe_unused)
+{
+	char *s = strchr(ops->raw, ','), *target, *endptr;
+
+	if (s == NULL)
+		return -1;
+
+	*s = '\0';
+	ops->source.raw = strdup(ops->raw);
+	*s = ',';
+
+	if (ops->source.raw == NULL)
+		return -1;
+
+	target = ++s;
+	ops->target.raw = strdup(target);
+	if (ops->target.raw == NULL)
+		goto out_free_source;
+
+	ops->target.addr = strtoull(target, &endptr, 16);
+	if (endptr == target)
+		goto out_free_target;
+
+	s = strchr(endptr, '<');
+	if (s == NULL)
+		goto out_free_target;
+	endptr = strchr(s + 1, '>');
+	if (endptr == NULL)
+		goto out_free_target;
+
+	*endptr = '\0';
+	ops->target.name = strdup(s + 1);
+	*endptr = '>';
+	if (ops->target.name == NULL)
+		goto out_free_target;
+
+	return 0;
+
+out_free_target:
+	zfree(&ops->target.raw);
+out_free_source:
+	zfree(&ops->source.raw);
+	return -1;
+}
+
+static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
+			  struct ins_operands *ops);
+
+static struct ins_ops s390_mov_ops = {
+	.parse	   = s390_mov__parse,
+	.scnprintf = mov__scnprintf,
+};
+
+static struct ins_ops *s390__associate_ins_ops(struct arch *arch, const char *name)
+{
+	struct ins_ops *ops = NULL;
+
+	/* catch all kind of jumps */
+	if (strchr(name, 'j') ||
+	    !strncmp(name, "bct", 3) ||
+	    !strncmp(name, "br", 2))
+		ops = &jump_ops;
+	/* override call/returns */
+	if (!strcmp(name, "bras") ||
+	    !strcmp(name, "brasl") ||
+	    !strcmp(name, "basr"))
+		ops = &s390_call_ops;
+	if (!strcmp(name, "br"))
+		ops = &ret_ops;
+	/* override load/store relative to PC */
+	if (!strcmp(name, "lrl") ||
+	    !strcmp(name, "lgrl") ||
+	    !strcmp(name, "lgfrl") ||
+	    !strcmp(name, "llgfrl") ||
+	    !strcmp(name, "strl") ||
+	    !strcmp(name, "stgrl"))
+		ops = &s390_mov_ops;
+
+	if (ops)
+		arch__associate_ins_ops(arch, name, ops);
+	return ops;
+}
+
+static int s390__cpuid_parse(struct arch *arch, char *cpuid)
+{
+	unsigned int family;
+	char model[16], model_c[16], cpumf_v[16], cpumf_a[16];
+	int ret;
+
+	/*
+	 * cpuid string format:
+	 * "IBM,family,model-capacity,model[,cpum_cf-version,cpum_cf-authorization]"
+	 */
+	ret = sscanf(cpuid, "%*[^,],%u,%[^,],%[^,],%[^,],%s", &family, model_c,
+		     model, cpumf_v, cpumf_a);
+	if (ret >= 2) {
+		arch->family = family;
+		arch->model = 0;
+		return 0;
+	}
+
+	return -1;
+}
+
+static int s390__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
+{
+	int err = 0;
+
+	if (!arch->initialized) {
+		arch->initialized = true;
+		arch->associate_instruction_ops = s390__associate_ins_ops;
+		if (cpuid)
+			err = s390__cpuid_parse(arch, cpuid);
+	}
+
+	return err;
+}