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1// SPDX-License-Identifier: GPL-2.02#include <linux/compiler.h>3 4static int s390_call__parse(struct arch *arch, struct ins_operands *ops,5			    struct map_symbol *ms, struct disasm_line *dl __maybe_unused)6{7	char *endptr, *tok, *name;8	struct map *map = ms->map;9	struct addr_map_symbol target = {10		.ms = { .map = map, },11	};12 13	tok = strchr(ops->raw, ',');14	if (!tok)15		return -1;16 17	ops->target.addr = strtoull(tok + 1, &endptr, 16);18 19	name = strchr(endptr, '<');20	if (name == NULL)21		return -1;22 23	name++;24 25	if (arch->objdump.skip_functions_char &&26	    strchr(name, arch->objdump.skip_functions_char))27		return -1;28 29	tok = strchr(name, '>');30	if (tok == NULL)31		return -1;32 33	*tok = '\0';34	ops->target.name = strdup(name);35	*tok = '>';36 37	if (ops->target.name == NULL)38		return -1;39	target.addr = map__objdump_2mem(map, ops->target.addr);40 41	if (maps__find_ams(ms->maps, &target) == 0 &&42	    map__rip_2objdump(target.ms.map, map__map_ip(target.ms.map, target.addr)) == ops->target.addr)43		ops->target.sym = target.ms.sym;44 45	return 0;46}47 48static struct ins_ops s390_call_ops = {49	.parse	   = s390_call__parse,50	.scnprintf = call__scnprintf,51};52 53static int s390_mov__parse(struct arch *arch __maybe_unused,54			   struct ins_operands *ops,55			   struct map_symbol *ms __maybe_unused,56			   struct disasm_line *dl __maybe_unused)57{58	char *s = strchr(ops->raw, ','), *target, *endptr;59 60	if (s == NULL)61		return -1;62 63	*s = '\0';64	ops->source.raw = strdup(ops->raw);65	*s = ',';66 67	if (ops->source.raw == NULL)68		return -1;69 70	target = ++s;71	ops->target.raw = strdup(target);72	if (ops->target.raw == NULL)73		goto out_free_source;74 75	ops->target.addr = strtoull(target, &endptr, 16);76	if (endptr == target)77		goto out_free_target;78 79	s = strchr(endptr, '<');80	if (s == NULL)81		goto out_free_target;82	endptr = strchr(s + 1, '>');83	if (endptr == NULL)84		goto out_free_target;85 86	*endptr = '\0';87	ops->target.name = strdup(s + 1);88	*endptr = '>';89	if (ops->target.name == NULL)90		goto out_free_target;91 92	return 0;93 94out_free_target:95	zfree(&ops->target.raw);96out_free_source:97	zfree(&ops->source.raw);98	return -1;99}100 101 102static struct ins_ops s390_mov_ops = {103	.parse	   = s390_mov__parse,104	.scnprintf = mov__scnprintf,105};106 107static struct ins_ops *s390__associate_ins_ops(struct arch *arch, const char *name)108{109	struct ins_ops *ops = NULL;110 111	/* catch all kind of jumps */112	if (strchr(name, 'j') ||113	    !strncmp(name, "bct", 3) ||114	    !strncmp(name, "br", 2))115		ops = &jump_ops;116	/* override call/returns */117	if (!strcmp(name, "bras") ||118	    !strcmp(name, "brasl") ||119	    !strcmp(name, "basr"))120		ops = &s390_call_ops;121	if (!strcmp(name, "br"))122		ops = &ret_ops;123	/* override load/store relative to PC */124	if (!strcmp(name, "lrl") ||125	    !strcmp(name, "lgrl") ||126	    !strcmp(name, "lgfrl") ||127	    !strcmp(name, "llgfrl") ||128	    !strcmp(name, "strl") ||129	    !strcmp(name, "stgrl"))130		ops = &s390_mov_ops;131 132	if (ops)133		arch__associate_ins_ops(arch, name, ops);134	return ops;135}136 137static int s390__cpuid_parse(struct arch *arch, char *cpuid)138{139	unsigned int family;140	char model[16], model_c[16], cpumf_v[16], cpumf_a[16];141	int ret;142 143	/*144	 * cpuid string format:145	 * "IBM,family,model-capacity,model[,cpum_cf-version,cpum_cf-authorization]"146	 */147	ret = sscanf(cpuid, "%*[^,],%u,%[^,],%[^,],%[^,],%s", &family, model_c,148		     model, cpumf_v, cpumf_a);149	if (ret >= 2) {150		arch->family = family;151		arch->model = 0;152		return 0;153	}154 155	return -1;156}157 158static int s390__annotate_init(struct arch *arch, char *cpuid __maybe_unused)159{160	int err = 0;161 162	if (!arch->initialized) {163		arch->initialized = true;164		arch->associate_instruction_ops = s390__associate_ins_ops;165		if (cpuid) {166			if (s390__cpuid_parse(arch, cpuid))167				err = SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING;168		}169	}170 171	return err;172}173