// SPDX-License-Identifier: GPL-2.0-only
#include <ctype.h>
#include <elf.h>
#ifndef EF_CSKY_ABIMASK
#define EF_CSKY_ABIMASK 0XF0000000
#endif
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <libgen.h>
#include <regex.h>
#include <stdlib.h>
#include <unistd.h>

#include <linux/string.h>
#include <subcmd/run-command.h>

#include "annotate.h"
#include "annotate-data.h"
#include "build-id.h"
#include "capstone.h"
#include "debug.h"
#include "disasm.h"
#include "dso.h"
#include "dwarf-regs.h"
#include "env.h"
#include "evsel.h"
#include "libbfd.h"
#include "llvm.h"
#include "map.h"
#include "maps.h"
#include "namespaces.h"
#include "srcline.h"
#include "symbol.h"
#include "thread.h"
#include "util.h"

static regex_t   file_lineno;

/* These can be referred from the arch-dependent code */
const struct ins_ops call_ops;
const struct ins_ops dec_ops;
const struct ins_ops jump_ops;
const struct ins_ops mov_ops;
const struct ins_ops nop_ops;
const struct ins_ops lock_ops;
const struct ins_ops ret_ops;
const struct ins_ops load_store_ops;
const struct ins_ops arithmetic_ops;

static void ins__sort(struct arch *arch);
static int disasm_line__parse(char *line, const char **namep, char **rawp);
static int disasm_line__parse_powerpc(struct disasm_line *dl, struct annotate_args *args);

static __attribute__((constructor)) void symbol__init_regexpr(void)
{
        regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED);
}

static int arch__grow_instructions(struct arch *arch)
{
        struct ins *new_instructions;
        size_t new_nr_allocated;

        if (arch->nr_instructions_allocated == 0 && arch->instructions)
                goto grow_from_non_allocated_table;

        new_nr_allocated = arch->nr_instructions_allocated + 128;
        new_instructions = realloc((void *)arch->instructions,
                                   new_nr_allocated * sizeof(struct ins));
        if (new_instructions == NULL)
                return -1;

out_update_instructions:
        arch->instructions = new_instructions;
        arch->nr_instructions_allocated = new_nr_allocated;
        return 0;

grow_from_non_allocated_table:
        new_nr_allocated = arch->nr_instructions + 128;
        new_instructions = calloc(new_nr_allocated, sizeof(struct ins));
        if (new_instructions == NULL)
                return -1;

        memcpy(new_instructions, arch->instructions, arch->nr_instructions * sizeof(struct ins));
        goto out_update_instructions;
}

int arch__associate_ins_ops(struct arch *arch, const char *name, const struct ins_ops *ops)
{
        struct ins *ins;

        if (arch->nr_instructions == arch->nr_instructions_allocated &&
            arch__grow_instructions(arch))
                return -1;

        ins = (struct ins *)&arch->instructions[arch->nr_instructions];
        ins->name = strdup(name);
        if (!ins->name)
                return -1;

        ins->ops  = ops;
        arch->nr_instructions++;

        ins__sort(arch);
        return 0;
}

static int e_machine_and_eflags__cmp(const struct e_machine_and_e_flags *val1,
                                     const struct e_machine_and_e_flags *val2)
{
        if (val1->e_machine == val2->e_machine) {
                if (val1->e_machine != EM_CSKY)
                        return 0;
                if ((val1->e_flags & EF_CSKY_ABIMASK) < (val2->e_flags & EF_CSKY_ABIMASK))
                        return -1;
                return (val1->e_flags & EF_CSKY_ABIMASK) > (val2->e_flags & EF_CSKY_ABIMASK);
        }
        return val1->e_machine < val2->e_machine ? -1 : 1;
}

static int arch__key_cmp(const void *key, const void *archp)
{
        const struct arch *const *arch = archp;

        return e_machine_and_eflags__cmp(key, &(*arch)->id);
}

static int arch__cmp(const void *a, const void *b)
{
        const struct arch *const *aa = a;
        const struct arch *const *ab = b;

        return e_machine_and_eflags__cmp(&(*aa)->id, &(*ab)->id);
}

const struct arch *arch__find(uint16_t e_machine, uint32_t e_flags, const char *cpuid)
{
        static const struct arch *(*const arch_new_fn[])(const struct e_machine_and_e_flags *id,
                                                         const char *cpuid) = {
                [EM_386]        = arch__new_x86,
                [EM_ARC]        = arch__new_arc,
                [EM_ARM]        = arch__new_arm,
                [EM_AARCH64]    = arch__new_arm64,
                [EM_CSKY]       = arch__new_csky,
                [EM_LOONGARCH]  = arch__new_loongarch,
                [EM_MIPS]       = arch__new_mips,
                [EM_PPC64]      = arch__new_powerpc,
                [EM_PPC]        = arch__new_powerpc,
                [EM_RISCV]      = arch__new_riscv64,
                [EM_S390]       = arch__new_s390,
                [EM_SPARC]      = arch__new_sparc,
                [EM_SPARCV9]    = arch__new_sparc,
                [EM_X86_64]     = arch__new_x86,
        };
        static const struct arch **archs;
        static size_t num_archs;
        struct e_machine_and_e_flags key = {
                .e_machine = e_machine,
                .e_flags = e_flags,
        };
        const struct arch *result = NULL, **tmp;

        if (num_archs > 0) {
                tmp = bsearch(&key, archs, num_archs, sizeof(*archs), arch__key_cmp);
                if (tmp)
                        result = *tmp;
        }

        if (result)
                return result;

        if (e_machine >= ARRAY_SIZE(arch_new_fn) || arch_new_fn[e_machine] == NULL) {
                errno = ENOTSUP;
                return NULL;
        }

        tmp = reallocarray(archs, num_archs + 1, sizeof(*archs));
        if (!tmp)
                return NULL;

        result = arch_new_fn[e_machine](&key, cpuid);
        if (!result) {
                pr_err("%s: failed to initialize %s (%u) arch priv area\n",
                        __func__, result->name, e_machine);
                free(tmp);
                return NULL;
        }
        archs = tmp;
        archs[num_archs++] = result;
        qsort(archs, num_archs, sizeof(*archs), arch__cmp);
        return result;
}

bool arch__is_x86(const struct arch *arch)
{
        return arch->id.e_machine == EM_386 || arch->id.e_machine == EM_X86_64;
}

bool arch__is_powerpc(const struct arch *arch)
{
        return arch->id.e_machine == EM_PPC || arch->id.e_machine == EM_PPC64;
}

static void ins_ops__delete(struct ins_operands *ops)
{
        if (ops == NULL)
                return;
        zfree(&ops->source.raw);
        zfree(&ops->source.name);
        zfree(&ops->target.raw);
        zfree(&ops->target.name);
}

int ins__raw_scnprintf(const struct ins *ins, char *bf, size_t size,
                           struct ins_operands *ops, int max_ins_name)
{
        return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->raw);
}

int ins__scnprintf(const struct ins *ins, char *bf, size_t size,
                   struct ins_operands *ops, int max_ins_name)
{
        if (ins->ops->scnprintf)
                return ins->ops->scnprintf(ins, bf, size, ops, max_ins_name);

        return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);
}

bool ins__is_fused(const struct arch *arch, const char *ins1, const char *ins2)
{
        if (!arch || !arch->ins_is_fused)
                return false;

        return arch->ins_is_fused(arch, ins1, ins2);
}

static int call__parse(const struct arch *arch, struct ins_operands *ops, struct map_symbol *ms,
                struct disasm_line *dl __maybe_unused)
{
        char *endptr, *tok, *name;
        struct map *map = ms->map;
        struct addr_map_symbol target;

        ops->target.addr = strtoull(ops->raw, &endptr, 16);

        name = strchr(endptr, '<');
        if (name == NULL)
                goto indirect_call;

        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;
find_target:
        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;

indirect_call:
        tok = strchr(endptr, '*');
        if (tok != NULL) {
                endptr++;

                /* Indirect call can use a non-rip register and offset: callq  *0x8(%rbx).
                 * Do not parse such instruction.  */
                if (strstr(endptr, "(%r") == NULL)
                        ops->target.addr = strtoull(endptr, NULL, 16);
        }
        goto find_target;
}

int call__scnprintf(const struct ins *ins, char *bf, size_t size,
                      struct ins_operands *ops, int max_ins_name)
{
        if (ops->target.sym)
                return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name);

        if (ops->target.addr == 0)
                return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);

        if (ops->target.name)
                return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.name);

        return scnprintf(bf, size, "%-*s *%" PRIx64, max_ins_name, ins->name, ops->target.addr);
}

const struct ins_ops call_ops = {
        .parse     = call__parse,
        .scnprintf = call__scnprintf,
        .is_call   = true,
};

bool ins__is_call(const struct ins *ins)
{
        return ins->ops && ins->ops->is_call;
}

/*
 * Prevents from matching commas in the comment section, e.g.:
 * ffff200008446e70:       b.cs    ffff2000084470f4 <generic_exec_single+0x314>  // b.hs, b.nlast
 *
 * and skip comma as part of function arguments, e.g.:
 * 1d8b4ac <linemap_lookup(line_maps const*, unsigned int)+0xcc>
 */
static inline const char *validate_comma(const char *c, struct ins_operands *ops)
{
        if (ops->jump.raw_comment && c > ops->jump.raw_comment)
                return NULL;

        if (ops->jump.raw_func_start && c > ops->jump.raw_func_start)
                return NULL;

        return c;
}

static int 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, '<');

        c = validate_comma(c, ops);

        /*
         * Examples of lines to parse for the _cpp_lex_token@@Base
         * function:
         *
         * 1159e6c: jne    115aa32 <_cpp_lex_token@@Base+0xf92>
         * 1159e8b: jne    c469be <cpp_named_operator2name@@Base+0xa72>
         *
         * The first is a jump to an offset inside the same function,
         * the second is to another function, i.e. that 0xa72 is an
         * offset in the cpp_named_operator2name@@base function.
         */
        /*
         * skip over possible up to 2 operands to get to address, e.g.:
         * tbnz  w0, #26, ffff0000083cd190 <security_file_permission+0xd0>
         */
        if (c != NULL) {
                c++;
                ops->target.addr = strtoull(c, NULL, 16);
                if (!ops->target.addr) {
                        c = strchr(c, ',');
                        c = validate_comma(c, ops);
                        if (c != NULL) {
                                c++;
                                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;

        /*
         * FIXME: things like this in _cpp_lex_token (gcc's cc1 program):

                cpp_named_operator2name@@Base+0xa72

         * Point to a place that is after the cpp_named_operator2name
         * boundaries, i.e.  in the ELF symbol table for cc1
         * cpp_named_operator2name is marked as being 32-bytes long, but it in
         * fact is much larger than that, so we seem to need a symbols__find()
         * routine that looks for >= current->start and  < next_symbol->start,
         * possibly just for C++ objects?
         *
         * For now lets just make some progress by marking jumps to outside the
         * current function as call like.
         *
         * Actual navigation will come next, with further understanding of how
         * the symbol searching and disassembly should be done.
         */
        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;
}

int jump__scnprintf(const struct ins *ins, char *bf, size_t size,
                      struct ins_operands *ops, int max_ins_name)
{
        const char *c;

        if (!ops->target.addr || ops->target.offset < 0)
                return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);

        if (ops->target.outside && ops->target.sym != NULL)
                return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name, ops->target.sym->name);

        c = strchr(ops->raw, ',');
        c = validate_comma(c, ops);

        if (c != NULL) {
                const char *c2 = strchr(c + 1, ',');

                c2 = validate_comma(c2, ops);
                /* check for 3-op insn */
                if (c2 != NULL)
                        c = c2;
                c++;

                /* mirror arch objdump's space-after-comma style */
                if (*c == ' ')
                        c++;
        }

        return scnprintf(bf, size, "%-*s %.*s%" PRIx64, max_ins_name,
                         ins->name, c ? c - ops->raw : 0, ops->raw,
                         ops->target.offset);
}

static void jump__delete(struct ins_operands *ops __maybe_unused)
{
        /*
         * The ops->jump.raw_comment and ops->jump.raw_func_start belong to the
         * raw string, don't free them.
         */
}

const struct ins_ops jump_ops = {
        .free      = jump__delete,
        .parse     = jump__parse,
        .scnprintf = jump__scnprintf,
        .is_jump   = true,
};

bool ins__is_jump(const struct ins *ins)
{
        return ins->ops && ins->ops->is_jump;
}

static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
{
        char *endptr, *name, *t;

        if (strstr(raw, "(%rip)") == NULL)
                return 0;

        *addrp = strtoull(comment, &endptr, 16);
        if (endptr == comment)
                return 0;
        name = strchr(endptr, '<');
        if (name == NULL)
                return -1;

        name++;

        t = strchr(name, '>');
        if (t == NULL)
                return 0;

        *t = '\0';
        *namep = strdup(name);
        *t = '>';

        return 0;
}

static int lock__parse(const struct arch *arch, struct ins_operands *ops, struct map_symbol *ms,
                struct disasm_line *dl __maybe_unused)
{
        ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
        if (ops->locked.ops == NULL)
                return 0;

        if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0)
                goto out_free_ops;

        ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name, 0);

        if (ops->locked.ins.ops == NULL)
                goto out_free_ops;

        if (ops->locked.ins.ops->parse &&
            ops->locked.ins.ops->parse(arch, ops->locked.ops, ms, NULL) < 0)
                goto out_free_ops;

        return 0;

out_free_ops:
        zfree(&ops->locked.ops);
        return 0;
}

static int lock__scnprintf(const struct ins *ins, char *bf, size_t size,
                           struct ins_operands *ops, int max_ins_name)
{
        int printed;

        if (ops->locked.ins.ops == NULL)
                return ins__raw_scnprintf(ins, bf, size, ops, max_ins_name);

        printed = scnprintf(bf, size, "%-*s ", max_ins_name, ins->name);
        return printed + ins__scnprintf(&ops->locked.ins, bf + printed,
                                        size - printed, ops->locked.ops, max_ins_name);
}

static void lock__delete(struct ins_operands *ops)
{
        struct ins *ins = &ops->locked.ins;

        if (ins->ops && ins->ops->free)
                ins->ops->free(ops->locked.ops);
        else
                ins_ops__delete(ops->locked.ops);

        zfree(&ops->locked.ops);
        zfree(&ops->locked.ins.name);
        zfree(&ops->target.raw);
        zfree(&ops->target.name);
}

const struct ins_ops lock_ops = {
        .free      = lock__delete,
        .parse     = lock__parse,
        .scnprintf = lock__scnprintf,
};

/*
 * Check if the operand has more than one registers like x86 SIB addressing:
 *   0x1234(%rax, %rbx, 8)
 *
 * But it doesn't care segment selectors like %gs:0x5678(%rcx), so just check
 * the input string after 'memory_ref_char' if exists.
 */
static bool check_multi_regs(const struct arch *arch, const char *op)
{
        int count = 0;

        if (arch->objdump.register_char == 0)
                return false;

        if (arch->objdump.memory_ref_char) {
                op = strchr(op, arch->objdump.memory_ref_char);
                if (op == NULL)
                        return false;
        }

        while ((op = strchr(op, arch->objdump.register_char)) != NULL) {
                count++;
                op++;
        }

        return count > 1;
}

static int mov__parse(const struct arch *arch, struct ins_operands *ops,
                      struct map_symbol *ms __maybe_unused,
                      struct disasm_line *dl __maybe_unused)
{
        char *s = strchr(ops->raw, ','), *target, *comment, prev;

        if (s == NULL)
                return -1;

        *s = '\0';

        /*
         * x86 SIB addressing has something like 0x8(%rax, %rcx, 1)
         * then it needs to have the closing parenthesis.
         */
        if (strchr(ops->raw, '(')) {
                *s = ',';
                s = strchr(ops->raw, ')');
                if (s == NULL || s[1] != ',')
                        return -1;
                *++s = '\0';
        }

        ops->source.raw = strdup(ops->raw);
        *s = ',';

        if (ops->source.raw == NULL)
                return -1;

        ops->source.multi_regs = check_multi_regs(arch, ops->source.raw);

        target = skip_spaces(++s);
        comment = strchr(s, arch->objdump.comment_char);

        if (comment != NULL)
                s = comment - 1;
        else
                s = strchr(s, '\0') - 1;

        while (s > target && isspace(s[0]))
                --s;
        s++;
        prev = *s;
        *s = '\0';

        ops->target.raw = strdup(target);
        *s = prev;

        if (ops->target.raw == NULL)
                goto out_free_source;

        ops->target.multi_regs = check_multi_regs(arch, ops->target.raw);

        if (comment == NULL)
                return 0;

        comment = skip_spaces(comment);
        comment__symbol(ops->source.raw, comment + 1, &ops->source.addr, &ops->source.name);
        comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name);

        return 0;

out_free_source:
        zfree(&ops->source.raw);
        return -1;
}

int mov__scnprintf(const struct ins *ins, char *bf, size_t size,
                     struct ins_operands *ops, int max_ins_name)
{
        return scnprintf(bf, size, "%-*s %s,%s", max_ins_name, ins->name,
                         ops->source.name ?: ops->source.raw,
                         ops->target.name ?: ops->target.raw);
}

const struct ins_ops mov_ops = {
        .parse     = mov__parse,
        .scnprintf = mov__scnprintf,
};

static int dec__parse(const struct arch *arch __maybe_unused, struct ins_operands *ops,
                      struct map_symbol *ms __maybe_unused,
                      struct disasm_line *dl __maybe_unused)
{
        char *target, *comment, *s, prev;

        target = s = ops->raw;

        while (s[0] != '\0' && !isspace(s[0]))
                ++s;
        prev = *s;
        *s = '\0';

        ops->target.raw = strdup(target);
        *s = prev;

        if (ops->target.raw == NULL)
                return -1;

        comment = strchr(s, arch->objdump.comment_char);
        if (comment == NULL)
                return 0;

        comment = skip_spaces(comment);
        comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name);

        return 0;
}

static int dec__scnprintf(const struct ins *ins, char *bf, size_t size,
                           struct ins_operands *ops, int max_ins_name)
{
        return scnprintf(bf, size, "%-*s %s", max_ins_name, ins->name,
                         ops->target.name ?: ops->target.raw);
}

const struct ins_ops dec_ops = {
        .parse     = dec__parse,
        .scnprintf = dec__scnprintf,
};

static int nop__scnprintf(const struct ins *ins __maybe_unused, char *bf, size_t size,
                          struct ins_operands *ops __maybe_unused, int max_ins_name)
{
        return scnprintf(bf, size, "%-*s", max_ins_name, "nop");
}

const struct ins_ops nop_ops = {
        .scnprintf = nop__scnprintf,
};

const struct ins_ops ret_ops = {
        .scnprintf = ins__raw_scnprintf,
};

static bool ins__is_nop(const struct ins *ins)
{
        return ins->ops == &nop_ops;
}

bool ins__is_ret(const struct ins *ins)
{
        return ins->ops == &ret_ops;
}

bool ins__is_lock(const struct ins *ins)
{
        return ins->ops == &lock_ops;
}

static int ins__key_cmp(const void *name, const void *insp)
{
        const struct ins *ins = insp;

        return strcmp(name, ins->name);
}

static int ins__cmp(const void *a, const void *b)
{
        const struct ins *ia = a;
        const struct ins *ib = b;

        return strcmp(ia->name, ib->name);
}

static void ins__sort(struct arch *arch)
{
        const int nmemb = arch->nr_instructions;

        qsort((void *)arch->instructions, nmemb, sizeof(struct ins), ins__cmp);
}

static const struct ins_ops *__ins__find(const struct arch *arch, const char *name,
                                     struct disasm_line *dl)
{
        const struct ins *ins;
        const int nmemb = arch->nr_instructions;

        if (arch__is_powerpc(arch)) {
                /*
                 * For powerpc, identify the instruction ops
                 * from the opcode using raw_insn.
                 */
                const struct ins_ops *ops;

                ops = check_ppc_insn(dl);
                if (ops)
                        return ops;
        }

        if (!arch->sorted_instructions) {
                ins__sort((struct arch *)arch);
                ((struct arch *)arch)->sorted_instructions = true;
        }

        ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp);
        if (ins)
                return ins->ops;

        if (arch->insn_suffix) {
                char tmp[32];
                char suffix;
                size_t len = strlen(name);

                if (len == 0 || len >= sizeof(tmp))
                        return NULL;

                suffix = name[len - 1];
                if (strchr(arch->insn_suffix, suffix) == NULL)
                        return NULL;

                strcpy(tmp, name);
                tmp[len - 1] = '\0'; /* remove the suffix and check again */

                ins = bsearch(tmp, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp);
        }
        return ins ? ins->ops : NULL;
}

const struct ins_ops *ins__find(const struct arch *arch, const char *name, struct disasm_line *dl)
{
        const struct ins_ops *ops = __ins__find(arch, name, dl);

        if (!ops && arch->associate_instruction_ops)
                ops = arch->associate_instruction_ops((struct arch *)arch, name);

        return ops;
}

static void disasm_line__init_ins(struct disasm_line *dl, const struct arch *arch,
                                    struct map_symbol *ms)
{
        dl->ins.ops = ins__find(arch, dl->ins.name, dl);

        if (!dl->ins.ops)
                return;

        if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, ms, dl) < 0)
                dl->ins.ops = NULL;
}

static int disasm_line__parse(char *line, const char **namep, char **rawp)
{
        char tmp, *name = skip_spaces(line);

        if (name[0] == '\0')
                return -1;

        *rawp = name + 1;

        while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
                ++*rawp;

        tmp = (*rawp)[0];
        (*rawp)[0] = '\0';
        *namep = strdup(name);

        if (*namep == NULL)
                goto out;

        (*rawp)[0] = tmp;
        *rawp = strim(*rawp);

        return 0;

out:
        return -1;
}

/*
 * Parses the result captured from symbol__disassemble_*
 * Example, line read from DSO file in powerpc:
 * line:    38 01 81 e8
 * opcode: fetched from arch specific get_opcode_insn
 * rawp_insn: e8810138
 *
 * rawp_insn is used later to extract the reg/offset fields
 */
#define PPC_OP(op)      (((op) >> 26) & 0x3F)
#define RAW_BYTES       11

static int disasm_line__parse_powerpc(struct disasm_line *dl, struct annotate_args *args)
{
        char *line = dl->al.line;
        const char **namep = &dl->ins.name;
        char **rawp = &dl->ops.raw;
        char *tmp_raw_insn, *name_raw_insn = skip_spaces(line);
        char *name = skip_spaces(name_raw_insn + RAW_BYTES);
        int disasm = 0;
        int ret = 0;

        if (args->options->disassembler_used)
                disasm = 1;

        if (name_raw_insn[0] == '\0')
                return -1;

        if (disasm)
                ret = disasm_line__parse(name, namep, rawp);
        else
                *namep = "";

        tmp_raw_insn = strndup(name_raw_insn, 11);
        if (tmp_raw_insn == NULL)
                return -1;

        remove_spaces(tmp_raw_insn);

        sscanf(tmp_raw_insn, "%x", &dl->raw.raw_insn);
        if (disasm)
                dl->raw.raw_insn = be32_to_cpu(dl->raw.raw_insn);

        return ret;
}

static void annotation_line__init(struct annotation_line *al,
                                  struct annotate_args *args,
                                  int nr)
{
        al->offset = args->offset;
        al->line = strdup(args->line);
        al->line_nr = args->line_nr;
        al->fileloc = args->fileloc;
        al->data_nr = nr;
}

static void annotation_line__exit(struct annotation_line *al)
{
        zfree_srcline(&al->path);
        zfree(&al->line);
        zfree(&al->cycles);
        zfree(&al->br_cntr);
}

static size_t disasm_line_size(int nr)
{
        struct annotation_line *al;

        return (sizeof(struct disasm_line) + (sizeof(al->data[0]) * nr));
}

/*
 * Allocating the disasm annotation line data with
 * following structure:
 *
 *    -------------------------------------------
 *    struct disasm_line | struct annotation_line
 *    -------------------------------------------
 *
 * We have 'struct annotation_line' member as last member
 * of 'struct disasm_line' to have an easy access.
 */
struct disasm_line *disasm_line__new(struct annotate_args *args)
{
        struct disasm_line *dl = NULL;
        struct annotation *notes = symbol__annotation(args->ms->sym);
        int nr = notes->src->nr_events;

        dl = zalloc(disasm_line_size(nr));
        if (!dl)
                return NULL;

        annotation_line__init(&dl->al, args, nr);
        if (dl->al.line == NULL)
                goto out_delete;

        if (args->offset != -1) {
                if (arch__is_powerpc(args->arch)) {
                        if (disasm_line__parse_powerpc(dl, args) < 0)
                                goto out_free_line;
                } else if (disasm_line__parse(dl->al.line, &dl->ins.name, &dl->ops.raw) < 0)
                        goto out_free_line;

                disasm_line__init_ins(dl, args->arch, args->ms);
        }

        return dl;

out_free_line:
        zfree(&dl->al.line);
out_delete:
        free(dl);
        return NULL;
}

void disasm_line__free(struct disasm_line *dl)
{
        if (dl->ins.ops && dl->ins.ops->free)
                dl->ins.ops->free(&dl->ops);
        else
                ins_ops__delete(&dl->ops);
        zfree(&dl->ins.name);
        annotation_line__exit(&dl->al);
        free(dl);
}

int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw, int max_ins_name)
{
        if (raw || !dl->ins.ops)
                return scnprintf(bf, size, "%-*s %s", max_ins_name, dl->ins.name, dl->ops.raw);

        return ins__scnprintf(&dl->ins, bf, size, &dl->ops, max_ins_name);
}

/*
 * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw)
 * which looks like following
 *
 *  0000000000415500 <_init>:
 *    415500:       sub    $0x8,%rsp
 *    415504:       mov    0x2f5ad5(%rip),%rax        # 70afe0 <_DYNAMIC+0x2f8>
 *    41550b:       test   %rax,%rax
 *    41550e:       je     415515 <_init+0x15>
 *    415510:       callq  416e70 <__gmon_start__@plt>
 *    415515:       add    $0x8,%rsp
 *    415519:       retq
 *
 * it will be parsed and saved into struct disasm_line as
 *  <offset>       <name>  <ops.raw>
 *
 * The offset will be a relative offset from the start of the symbol and -1
 * means that it's not a disassembly line so should be treated differently.
 * The ops.raw part will be parsed further according to type of the instruction.
 */
static int symbol__parse_objdump_line(struct symbol *sym,
                                      struct annotate_args *args,
                                      char *parsed_line, int *line_nr, char **fileloc)
{
        struct map *map = args->ms->map;
        struct annotation *notes = symbol__annotation(sym);
        struct disasm_line *dl;
        char *tmp;
        s64 line_ip, offset = -1;
        regmatch_t match[2];

        /* /filename:linenr ? Save line number and ignore. */
        if (regexec(&file_lineno, parsed_line, 2, match, 0) == 0) {
                *line_nr = atoi(parsed_line + match[1].rm_so);
                free(*fileloc);
                *fileloc = strdup(parsed_line);
                return 0;
        }

        /* Process hex address followed by ':'. */
        line_ip = strtoull(parsed_line, &tmp, 16);
        if (parsed_line != tmp && tmp[0] == ':' && tmp[1] != '\0') {
                u64 start = map__rip_2objdump(map, sym->start),
                    end = map__rip_2objdump(map, sym->end);

                offset = line_ip - start;
                if ((u64)line_ip < start || (u64)line_ip >= end)
                        offset = -1;
                else
                        parsed_line = tmp + 1;
        }

        args->offset  = offset;
        args->line    = parsed_line;
        args->line_nr = *line_nr;
        args->fileloc = *fileloc;
        args->ms->sym  = sym;

        dl = disasm_line__new(args);
        (*line_nr)++;

        if (dl == NULL)
                return -1;

        if (!disasm_line__has_local_offset(dl)) {
                dl->ops.target.offset = dl->ops.target.addr -
                                        map__rip_2objdump(map, sym->start);
                dl->ops.target.offset_avail = true;
        }

        /* kcore has no symbols, so add the call target symbol */
        if (dl->ins.ops && ins__is_call(&dl->ins) && !dl->ops.target.sym) {
                struct addr_map_symbol target = {
                        .addr = dl->ops.target.addr,
                        .ms = { .map = map__get(map), },
                };

                if (!maps__find_ams(thread__maps(args->ms->thread), &target) &&
                    target.ms.sym->start == target.al_addr)
                        dl->ops.target.sym = target.ms.sym;

                addr_map_symbol__exit(&target);
        }

        annotation_line__add(&dl->al, &notes->src->source);
        return 0;
}

static void delete_last_nop(struct symbol *sym)
{
        struct annotation *notes = symbol__annotation(sym);
        struct list_head *list = &notes->src->source;
        struct disasm_line *dl;

        while (!list_empty(list)) {
                dl = list_entry(list->prev, struct disasm_line, al.node);

                if (dl->ins.ops) {
                        if (!ins__is_nop(&dl->ins))
                                return;
                } else {
                        if (!strstr(dl->al.line, " nop ") &&
                            !strstr(dl->al.line, " nopl ") &&
                            !strstr(dl->al.line, " nopw "))
                                return;
                }

                list_del_init(&dl->al.node);
                disasm_line__free(dl);
        }
}

int symbol__strerror_disassemble(struct map_symbol *ms, int errnum, char *buf, size_t buflen)
{
        struct dso *dso = map__dso(ms->map);

        BUG_ON(buflen == 0);

        if (errnum >= 0) {
                str_error_r(errnum, buf, buflen);
                return 0;
        }

        switch (errnum) {
        case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: {
                char bf[SBUILD_ID_SIZE + 15] = " with build id ";
                char *build_id_msg = NULL;

                if (dso__has_build_id(dso)) {
                        build_id__snprintf(dso__bid(dso), bf + 15, sizeof(bf) - 15);
                        build_id_msg = bf;
                }
                scnprintf(buf, buflen,
                          "No vmlinux file%s\nwas found in the path.\n\n"
                          "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
                          "Please use:\n\n"
                          "  perf buildid-cache -vu vmlinux\n\n"
                          "or:\n\n"
                          "  --vmlinux vmlinux\n", build_id_msg ?: "");
        }
                break;
        case SYMBOL_ANNOTATE_ERRNO__NO_LIBOPCODES_FOR_BPF:
                scnprintf(buf, buflen, "Please link with binutils's libopcode to enable BPF annotation");
                break;
        case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP:
                scnprintf(buf, buflen, "Problems with arch specific instruction name regular expressions.");
                break;
        case SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_CPUID_PARSING:
                scnprintf(buf, buflen, "Problems while parsing the CPUID in the arch specific initialization.");
                break;
        case SYMBOL_ANNOTATE_ERRNO__BPF_INVALID_FILE:
                scnprintf(buf, buflen, "Invalid BPF file: %s.", dso__long_name(dso));
                break;
        case SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF:
                scnprintf(buf, buflen, "The %s BPF file has no BTF section, compile with -g or use pahole -J.",
                          dso__long_name(dso));
                break;
        case SYMBOL_ANNOTATE_ERRNO__COULDNT_DETERMINE_FILE_TYPE:
                scnprintf(buf, buflen, "Couldn't determine the file %s type.", dso__long_name(dso));
                break;
        default:
                scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum);
                break;
        }

        return 0;
}

static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size)
{
        char linkname[PATH_MAX];
        char *build_id_filename;
        char *build_id_path = NULL;
        char *pos;
        int len;

        if (dso__symtab_type(dso) == DSO_BINARY_TYPE__KALLSYMS &&
            !dso__is_kcore(dso))
                return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX;

        build_id_filename = dso__build_id_filename(dso, NULL, 0, false);
        if (build_id_filename) {
                __symbol__join_symfs(filename, filename_size, build_id_filename);
                free(build_id_filename);
        } else {
                if (dso__has_build_id(dso))
                        return ENOMEM;
                goto fallback;
        }

        build_id_path = strdup(filename);
        if (!build_id_path)
                return ENOMEM;

        /*
         * old style build-id cache has name of XX/XXXXXXX.. while
         * new style has XX/XXXXXXX../{elf,kallsyms,vdso}.
         * extract the build-id part of dirname in the new style only.
         */
        pos = strrchr(build_id_path, '/');
        if (pos && strlen(pos) < SBUILD_ID_SIZE - 2)
                dirname(build_id_path);

        if (dso__is_kcore(dso))
                goto fallback;

        len = readlink(build_id_path, linkname, sizeof(linkname) - 1);
        if (len < 0)
                goto fallback;

        linkname[len] = '\0';
        if (strstr(linkname, DSO__NAME_KALLSYMS) ||
                access(filename, R_OK)) {
fallback:
                /*
                 * If we don't have build-ids or the build-id file isn't in the
                 * cache, or is just a kallsyms file, well, lets hope that this
                 * DSO is the same as when 'perf record' ran.
                 */
                if (dso__kernel(dso) && dso__long_name(dso)[0] == '/')
                        snprintf(filename, filename_size, "%s", dso__long_name(dso));
                else
                        __symbol__join_symfs(filename, filename_size, dso__long_name(dso));

                mutex_lock(dso__lock(dso));
                if (access(filename, R_OK) && errno == ENOENT && dso__nsinfo(dso)) {
                        char *new_name = dso__filename_with_chroot(dso, filename);
                        if (new_name) {
                                strlcpy(filename, new_name, filename_size);
                                free(new_name);
                        }
                }
                mutex_unlock(dso__lock(dso));
        } else if (dso__binary_type(dso) == DSO_BINARY_TYPE__NOT_FOUND) {
                dso__set_binary_type(dso, DSO_BINARY_TYPE__BUILD_ID_CACHE);
        }

        free(build_id_path);
        return 0;
}

static int symbol__disassemble_raw(char *filename, struct symbol *sym,
                                        struct annotate_args *args)
{
        struct annotation *notes = symbol__annotation(sym);
        struct map *map = args->ms->map;
        struct dso *dso = map__dso(map);
        u64 start = map__rip_2objdump(map, sym->start);
        u64 end = map__rip_2objdump(map, sym->end);
        u64 len = end - start;
        u64 offset;
        int i, count;
        u8 *buf = NULL;
        char disasm_buf[512];
        struct disasm_line *dl;
        u32 *line;

        /* Return if objdump is specified explicitly */
        if (args->options->objdump_path)
                return -1;

        pr_debug("Reading raw instruction from : %s using dso__data_read_offset\n", filename);

        buf = malloc(len);
        if (buf == NULL)
                goto err;

        count = dso__data_read_offset(dso, NULL, sym->start, buf, len);

        line = (u32 *)buf;

        if ((u64)count != len)
                goto err;

        /* add the function address and name */
        scnprintf(disasm_buf, sizeof(disasm_buf), "%#"PRIx64" <%s>:",
                  start, sym->name);

        args->offset = -1;
        args->line = disasm_buf;
        args->line_nr = 0;
        args->fileloc = NULL;
        args->ms->sym = sym;

        dl = disasm_line__new(args);
        if (dl == NULL)
                goto err;

        annotation_line__add(&dl->al, &notes->src->source);

        /* Each raw instruction is 4 byte */
        count = len/4;

        for (i = 0, offset = 0; i < count; i++) {
                args->offset = offset;
                sprintf(args->line, "%x", line[i]);
                dl = disasm_line__new(args);
                if (dl == NULL)
                        break;

                annotation_line__add(&dl->al, &notes->src->source);
                offset += 4;
        }

        /* It failed in the middle */
        if (offset != len) {
                struct list_head *list = &notes->src->source;

                /* Discard all lines and fallback to objdump */
                while (!list_empty(list)) {
                        dl = list_first_entry(list, struct disasm_line, al.node);

                        list_del_init(&dl->al.node);
                        disasm_line__free(dl);
                }
                count = -1;
        }

out:
        free(buf);
        return count < 0 ? count : 0;

err:
        count = -1;
        goto out;
}

/*
 * Possibly create a new version of line with tabs expanded. Returns the
 * existing or new line, storage is updated if a new line is allocated. If
 * allocation fails then NULL is returned.
 */
char *expand_tabs(char *line, char **storage, size_t *storage_len)
{
        size_t i, src, dst, len, new_storage_len, num_tabs;
        char *new_line;
        size_t line_len = strlen(line);

        for (num_tabs = 0, i = 0; i < line_len; i++)
                if (line[i] == '\t')
                        num_tabs++;

        if (num_tabs == 0)
                return line;

        /*
         * Space for the line and '\0', less the leading and trailing
         * spaces. Each tab may introduce 7 additional spaces.
         */
        new_storage_len = line_len + 1 + (num_tabs * 7);

        new_line = malloc(new_storage_len);
        if (new_line == NULL) {
                pr_err("Failure allocating memory for tab expansion\n");
                return NULL;
        }

        /*
         * Copy regions starting at src and expand tabs. If there are two
         * adjacent tabs then 'src == i', the memcpy is of size 0 and the spaces
         * are inserted.
         */
        for (i = 0, src = 0, dst = 0; i < line_len && num_tabs; i++) {
                if (line[i] == '\t') {
                        len = i - src;
                        memcpy(&new_line[dst], &line[src], len);
                        dst += len;
                        new_line[dst++] = ' ';
                        while (dst % 8 != 0)
                                new_line[dst++] = ' ';
                        src = i + 1;
                        num_tabs--;
                }
        }

        /* Expand the last region. */
        len = line_len - src;
        memcpy(&new_line[dst], &line[src], len);
        dst += len;
        new_line[dst] = '\0';

        free(*storage);
        *storage = new_line;
        *storage_len = new_storage_len;
        return new_line;
}

static int symbol__disassemble_bpf_image(struct symbol *sym, struct annotate_args *args)
{
        struct annotation *notes = symbol__annotation(sym);
        struct disasm_line *dl;

        args->offset = -1;
        args->line = strdup("to be implemented");
        args->line_nr = 0;
        args->fileloc = NULL;
        dl = disasm_line__new(args);
        if (dl)
                annotation_line__add(&dl->al, &notes->src->source);

        zfree(&args->line);
        return 0;
}

static int symbol__disassemble_objdump(const char *filename, struct symbol *sym,
                                       struct annotate_args *args)
{
        struct annotation_options *opts = &annotate_opts;
        struct map *map = args->ms->map;
        struct dso *dso = map__dso(map);
        char *command;
        FILE *file;
        int lineno = 0;
        char *fileloc = NULL;
        int nline;
        char *line;
        size_t line_len;
        const char *objdump_argv[] = {
                "/bin/sh",
                "-c",
                NULL, /* Will be the objdump command to run. */
                "--",
                NULL, /* Will be the symfs path. */
                NULL,
        };
        struct child_process objdump_process;
        int err;

        if (dso__binary_type(dso) == DSO_BINARY_TYPE__BPF_PROG_INFO)
                return symbol__disassemble_bpf_libbfd(sym, args);

        if (dso__binary_type(dso) == DSO_BINARY_TYPE__BPF_IMAGE)
                return symbol__disassemble_bpf_image(sym, args);

        err = asprintf(&command,
                 "%s %s%s --start-address=0x%016" PRIx64
                 " --stop-address=0x%016" PRIx64
                 " %s -d %s %s %s %c%s%c %s%s -C \"$1\"",
                 opts->objdump_path ?: "objdump",
                 opts->disassembler_style ? "-M " : "",
                 opts->disassembler_style ?: "",
                 map__rip_2objdump(map, sym->start),
                 map__rip_2objdump(map, sym->end),
                 opts->show_linenr ? "-l" : "",
                 opts->show_asm_raw ? "" : "--no-show-raw-insn",
                 opts->annotate_src ? "-S" : "",
                 opts->prefix ? "--prefix " : "",
                 opts->prefix ? '"' : ' ',
                 opts->prefix ?: "",
                 opts->prefix ? '"' : ' ',
                 opts->prefix_strip ? "--prefix-strip=" : "",
                 opts->prefix_strip ?: "");

        if (err < 0) {
                pr_err("Failure allocating memory for the command to run\n");
                return err;
        }

        pr_debug("Executing: %s\n", command);

        objdump_argv[2] = command;
        objdump_argv[4] = filename;

        /* Create a pipe to read from for stdout */
        memset(&objdump_process, 0, sizeof(objdump_process));
        objdump_process.argv = objdump_argv;
        objdump_process.out = -1;
        objdump_process.err = -1;
        objdump_process.no_stderr = 1;
        if (start_command(&objdump_process)) {
                pr_err("Failure starting to run %s\n", command);
                err = -1;
                goto out_free_command;
        }

        file = fdopen(objdump_process.out, "r");
        if (!file) {
                pr_err("Failure creating FILE stream for %s\n", command);
                /*
                 * If we were using debug info should retry with
                 * original binary.
                 */
                err = -1;
                goto out_close_stdout;
        }

        /* Storage for getline. */
        line = NULL;
        line_len = 0;

        nline = 0;
        while (!feof(file)) {
                const char *match;
                char *expanded_line;

                if (getline(&line, &line_len, file) < 0 || !line)
                        break;

                /* Skip lines containing "filename:" */
                match = strstr(line, filename);
                if (match && match[strlen(filename)] == ':')
                        continue;

                expanded_line = strim(line);
                expanded_line = expand_tabs(expanded_line, &line, &line_len);
                if (!expanded_line)
                        break;

                /*
                 * The source code line number (lineno) needs to be kept in
                 * across calls to symbol__parse_objdump_line(), so that it
                 * can associate it with the instructions till the next one.
                 * See disasm_line__new() and struct disasm_line::line_nr.
                 */
                if (symbol__parse_objdump_line(sym, args, expanded_line,
                                               &lineno, &fileloc) < 0)
                        break;
                nline++;
        }
        free(line);
        free(fileloc);

        err = finish_command(&objdump_process);
        if (err)
                pr_err("Error running %s\n", command);

        if (nline == 0) {
                err = -1;
                pr_err("No output from %s\n", command);
        }

        /*
         * kallsyms does not have symbol sizes so there may a nop at the end.
         * Remove it.
         */
        if (dso__is_kcore(dso))
                delete_last_nop(sym);

        fclose(file);

out_close_stdout:
        close(objdump_process.out);

out_free_command:
        free(command);
        return err;
}

int symbol__disassemble(struct symbol *sym, struct annotate_args *args)
{
        struct annotation_options *options = args->options;
        struct map *map = args->ms->map;
        struct dso *dso = map__dso(map);
        char symfs_filename[PATH_MAX];
        bool delete_extract = false;
        struct kcore_extract kce;
        bool decomp = false;
        int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename));

        if (err)
                return err;

        pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
                 symfs_filename, sym->name, map__unmap_ip(map, sym->start),
                 map__unmap_ip(map, sym->end));

        pr_debug("annotating [%p] %30s : [%p] %30s\n", dso, dso__long_name(dso), sym, sym->name);

        if (dso__binary_type(dso) == DSO_BINARY_TYPE__NOT_FOUND) {
                return SYMBOL_ANNOTATE_ERRNO__COULDNT_DETERMINE_FILE_TYPE;
        } else if (dso__is_kcore(dso)) {
                kce.addr = map__rip_2objdump(map, sym->start);
                kce.kcore_filename = symfs_filename;
                kce.len = sym->end - sym->start;
                kce.offs = sym->start;

                if (!kcore_extract__create(&kce)) {
                        delete_extract = true;
                        strlcpy(symfs_filename, kce.extract_filename, sizeof(symfs_filename));
                }
        } else if (dso__needs_decompress(dso)) {
                char tmp[KMOD_DECOMP_LEN];

                if (dso__decompress_kmodule_path(dso, symfs_filename, tmp, sizeof(tmp)) < 0)
                        return -1;

                decomp = true;
                strcpy(symfs_filename, tmp);
        }

        /*
         * For powerpc data type profiling, use the dso__data_read_offset to
         * read raw instruction directly and interpret the binary code to
         * understand instructions and register fields. For sort keys as type
         * and typeoff, disassemble to mnemonic notation is not required in
         * case of powerpc.
         */
        if (arch__is_powerpc(args->arch)) {
                extern const char *sort_order;

                if (sort_order && !strstr(sort_order, "sym")) {
                        err = symbol__disassemble_raw(symfs_filename, sym, args);
                        if (err == 0)
                                goto out_remove_tmp;

                        err = symbol__disassemble_capstone_powerpc(symfs_filename, sym, args);
                        if (err == 0)
                                goto out_remove_tmp;
                }
        }

        /* FIXME: LLVM and CAPSTONE should support source code */
        if (options->annotate_src && !options->hide_src_code) {
                err = symbol__disassemble_objdump(symfs_filename, sym, args);
                if (err == 0)
                        goto out_remove_tmp;
        }

        err = -1;
        for (u8 i = 0; i < ARRAY_SIZE(options->disassemblers) && err != 0; i++) {
                enum perf_disassembler dis = options->disassemblers[i];

                switch (dis) {
                case PERF_DISASM_LLVM:
                        args->options->disassembler_used = PERF_DISASM_LLVM;
                        err = symbol__disassemble_llvm(symfs_filename, sym, args);
                        break;
                case PERF_DISASM_CAPSTONE:
                        args->options->disassembler_used = PERF_DISASM_CAPSTONE;
                        err = symbol__disassemble_capstone(symfs_filename, sym, args);
                        break;
                case PERF_DISASM_OBJDUMP:
                        args->options->disassembler_used = PERF_DISASM_OBJDUMP;
                        err = symbol__disassemble_objdump(symfs_filename, sym, args);
                        break;
                case PERF_DISASM_UNKNOWN: /* End of disassemblers. */
                default:
                        args->options->disassembler_used = PERF_DISASM_UNKNOWN;
                        goto out_remove_tmp;
                }
                if (err == 0)
                        pr_debug("Disassembled with %s\n", perf_disassembler__strs[dis]);
        }
out_remove_tmp:
        if (decomp)
                unlink(symfs_filename);

        if (delete_extract)
                kcore_extract__delete(&kce);

        return err;
}