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// 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 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;
}
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