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// SPDX-License-Identifier: GPL-2.0
/*
* Perf annotate functions.
*
* Copyright (C) 2020-2023 Loongson Technology Corporation Limited
*/
#include <stdlib.h>
#include <string.h>
#include <linux/compiler.h>
#include <linux/zalloc.h>
#include "../disasm.h"
#include "../map.h"
#include "../maps.h"
#include "../symbol.h"
#include "../thread.h"
static int loongarch_call__parse(const struct arch *arch, struct ins_operands *ops,
struct map_symbol *ms,
struct disasm_line *dl __maybe_unused)
{
char *c, *endptr, *tok, *name;
struct map *map = ms->map;
struct addr_map_symbol target;
c = strchr(ops->raw, '#');
if (c++ == NULL)
return -1;
ops->target.addr = strtoull(c, &endptr, 16);
name = strchr(endptr, '<');
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 = (struct addr_map_symbol) {
.ms = { .map = map__get(map), },
.addr = map__objdump_2mem(map, ops->target.addr),
};
if (maps__find_ams(thread__maps(ms->thread), &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;
addr_map_symbol__exit(&target);
return 0;
}
static const struct ins_ops loongarch_call_ops = {
.parse = loongarch_call__parse,
.scnprintf = call__scnprintf,
.is_call = true,
};
static int loongarch_jump__parse(const struct arch *arch, struct ins_operands *ops,
struct map_symbol *ms,
struct disasm_line *dl __maybe_unused)
{
struct map *map = ms->map;
struct symbol *sym = ms->sym;
struct addr_map_symbol target = {
.ms = { .map = map__get(map), },
};
const char *c = strchr(ops->raw, '#');
u64 start, end;
ops->jump.raw_comment = strchr(ops->raw, arch->objdump.comment_char);
ops->jump.raw_func_start = strchr(ops->raw, '<');
if (ops->jump.raw_func_start && c > ops->jump.raw_func_start)
c = NULL;
if (c++ != NULL)
ops->target.addr = strtoull(c, NULL, 16);
else
ops->target.addr = strtoull(ops->raw, NULL, 16);
target.addr = map__objdump_2mem(map, ops->target.addr);
start = map__unmap_ip(map, sym->start);
end = map__unmap_ip(map, sym->end);
ops->target.outside = target.addr < start || target.addr > end;
if (maps__find_ams(thread__maps(ms->thread), &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;
if (!ops->target.outside) {
ops->target.offset = target.addr - start;
ops->target.offset_avail = true;
} else {
ops->target.offset_avail = false;
}
addr_map_symbol__exit(&target);
return 0;
}
static const struct ins_ops loongarch_jump_ops = {
.parse = loongarch_jump__parse,
.scnprintf = jump__scnprintf,
.is_jump = true,
};
static
const struct ins_ops *loongarch__associate_ins_ops(struct arch *arch, const char *name)
{
const struct ins_ops *ops = NULL;
if (!strcmp(name, "bl"))
ops = &loongarch_call_ops;
else if (!strcmp(name, "jirl"))
ops = &ret_ops;
else if (!strcmp(name, "b") ||
!strncmp(name, "beq", 3) ||
!strncmp(name, "bne", 3) ||
!strncmp(name, "blt", 3) ||
!strncmp(name, "bge", 3) ||
!strncmp(name, "bltu", 4) ||
!strncmp(name, "bgeu", 4))
ops = &loongarch_jump_ops;
else
return NULL;
arch__associate_ins_ops(arch, name, ops);
return ops;
}
const struct arch *arch__new_loongarch(const struct e_machine_and_e_flags *id,
const char *cpuid __maybe_unused)
{
struct arch *arch = zalloc(sizeof(*arch));
if (!arch)
return NULL;
arch->name = "loongarch";
arch->id = *id;
arch->associate_instruction_ops = loongarch__associate_ins_ops;
arch->objdump.comment_char = '#';
return arch;
}
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