diff options
Diffstat (limited to 'tools/perf/arch/s390/annotate')
| -rw-r--r-- | tools/perf/arch/s390/annotate/instructions.c | 174 |
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..0e1366306 --- /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 = { + .ms = { .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 (maps__find_ams(ms->maps, &target) == 0 && + map__rip_2objdump(target.ms.map, map->map_ip(target.ms.map, target.addr)) == ops->target.addr) + ops->target.sym = target.ms.sym; + + return 0; +} + +static int call__scnprintf(struct ins *ins, char *bf, size_t size, + struct ins_operands *ops, int max_ins_name); + +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 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) { + if (s390__cpuid_parse(arch, cpuid)) + err = SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING; + } + } + + return err; +} |