/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_ANNOTATE_H
#define __PERF_ANNOTATE_H

#include <stdbool.h>
#include <stdint.h>
#include <linux/types.h>
#include "symbol.h"
#include "hist.h"
#include "sort.h"
#include <linux/list.h>
#include <linux/rbtree.h>
#include <pthread.h>

struct ins_ops;

struct ins {
        const char     *name;
        struct ins_ops *ops;
};

struct ins_operands {
        char    *raw;
        struct {
                char    *raw;
                char    *name;
                u64     addr;
                s64     offset;
                bool    offset_avail;
        } target;
        union {
                struct {
                        char    *raw;
                        char    *name;
                        u64     addr;
                } source;
                struct {
                        struct ins          ins;
                        struct ins_operands *ops;
                } locked;
        };
};

struct arch;

struct ins_ops {
        void (*free)(struct ins_operands *ops);
        int (*parse)(struct arch *arch, struct ins_operands *ops, struct map *map);
        int (*scnprintf)(struct ins *ins, char *bf, size_t size,
                         struct ins_operands *ops);
};

bool ins__is_jump(const struct ins *ins);
bool ins__is_call(const struct ins *ins);
bool ins__is_ret(const struct ins *ins);
bool ins__is_lock(const struct ins *ins);
int ins__scnprintf(struct ins *ins, char *bf, size_t size, struct ins_operands *ops);
bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2);

struct annotation;

struct sym_hist_entry {
        u64             nr_samples;
        u64             period;
};

struct annotation_data {
        double                   percent;
        double                   percent_sum;
        struct sym_hist_entry    he;
};

struct annotation_line {
        struct list_head         node;
        struct rb_node           rb_node;
        s64                      offset;
        char                    *line;
        int                      line_nr;
        float                    ipc;
        u64                      cycles;
        size_t                   privsize;
        char                    *path;
        int                      samples_nr;
        struct annotation_data   samples[0];
};

struct disasm_line {
        struct ins               ins;
        struct ins_operands      ops;

        /* This needs to be at the end. */
        struct annotation_line   al;
};

static inline struct disasm_line *disasm_line(struct annotation_line *al)
{
        return al ? container_of(al, struct disasm_line, al) : NULL;
}

static inline bool disasm_line__has_offset(const struct disasm_line *dl)
{
        return dl->ops.target.offset_avail;
}

void disasm_line__free(struct disasm_line *dl);
struct annotation_line *
annotation_line__next(struct annotation_line *pos, struct list_head *head);
int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw);
size_t disasm__fprintf(struct list_head *head, FILE *fp);
void symbol__calc_percent(struct symbol *sym, struct perf_evsel *evsel);

struct sym_hist {
        u64                   nr_samples;
        u64                   period;
        struct sym_hist_entry addr[0];
};

struct cyc_hist {
        u64     start;
        u64     cycles;
        u64     cycles_aggr;
        u32     num;
        u32     num_aggr;
        u8      have_start;
        /* 1 byte padding */
        u16     reset;
};

/** struct annotated_source - symbols with hits have this attached as in sannotation
 *
 * @histogram: Array of addr hit histograms per event being monitored
 * @lines: If 'print_lines' is specified, per source code line percentages
 * @source: source parsed from a disassembler like objdump -dS
 * @cyc_hist: Average cycles per basic block
 *
 * lines is allocated, percentages calculated and all sorted by percentage
 * when the annotation is about to be presented, so the percentages are for
 * one of the entries in the histogram array, i.e. for the event/counter being
 * presented. It is deallocated right after symbol__{tui,tty,etc}_annotate
 * returns.
 */
struct annotated_source {
        struct list_head   source;
        int                nr_histograms;
        size_t             sizeof_sym_hist;
        struct cyc_hist    *cycles_hist;
        struct sym_hist    histograms[0];
};

struct annotation {
        pthread_mutex_t         lock;
        u64                     max_coverage;
        struct annotated_source *src;
};

static inline struct sym_hist *annotation__histogram(struct annotation *notes, int idx)
{
        return (((void *)&notes->src->histograms) +
                (notes->src->sizeof_sym_hist * idx));
}

static inline struct annotation *symbol__annotation(struct symbol *sym)
{
        return (void *)sym - symbol_conf.priv_size;
}

int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample,
                                 int evidx);

int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
                                    struct addr_map_symbol *start,
                                    unsigned cycles);

int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample,
                                 int evidx, u64 addr);

int symbol__alloc_hist(struct symbol *sym);
void symbol__annotate_zero_histograms(struct symbol *sym);

int symbol__annotate(struct symbol *sym, struct map *map,
                     struct perf_evsel *evsel, size_t privsize,
                     struct arch **parch);

enum symbol_disassemble_errno {
        SYMBOL_ANNOTATE_ERRNO__SUCCESS          = 0,

        /*
         * Choose an arbitrary negative big number not to clash with standard
         * errno since SUS requires the errno has distinct positive values.
         * See 'Issue 6' in the link below.
         *
         * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
         */
        __SYMBOL_ANNOTATE_ERRNO__START          = -10000,

        SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX       = __SYMBOL_ANNOTATE_ERRNO__START,

        __SYMBOL_ANNOTATE_ERRNO__END,
};

int symbol__strerror_disassemble(struct symbol *sym, struct map *map,
                                 int errnum, char *buf, size_t buflen);

int symbol__annotate_printf(struct symbol *sym, struct map *map,
                            struct perf_evsel *evsel, bool full_paths,
                            int min_pcnt, int max_lines, int context);
void symbol__annotate_zero_histogram(struct symbol *sym, int evidx);
void symbol__annotate_decay_histogram(struct symbol *sym, int evidx);
void annotated_source__purge(struct annotated_source *as);

bool ui__has_annotation(void);

int symbol__tty_annotate(struct symbol *sym, struct map *map,
                         struct perf_evsel *evsel, bool print_lines,
                         bool full_paths, int min_pcnt, int max_lines);

#ifdef HAVE_SLANG_SUPPORT
int symbol__tui_annotate(struct symbol *sym, struct map *map,
                         struct perf_evsel *evsel,
                         struct hist_browser_timer *hbt);
#else
static inline int symbol__tui_annotate(struct symbol *sym __maybe_unused,
                                struct map *map __maybe_unused,
                                struct perf_evsel *evsel  __maybe_unused,
                                struct hist_browser_timer *hbt
                                __maybe_unused)
{
        return 0;
}
#endif

extern const char       *disassembler_style;

#endif  /* __PERF_ANNOTATE_H */