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-rw-r--r--tools/perf/util/annotate.c1479
1 files changed, 1479 insertions, 0 deletions
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
new file mode 100644
index 000000000..7f5bdfc9b
--- /dev/null
+++ b/tools/perf/util/annotate.c
@@ -0,0 +1,1479 @@
+/*
+ * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
+ *
+ * Parts came from builtin-annotate.c, see those files for further
+ * copyright notes.
+ *
+ * Released under the GPL v2. (and only v2, not any later version)
+ */
+
+#include "util.h"
+#include "ui/ui.h"
+#include "sort.h"
+#include "build-id.h"
+#include "color.h"
+#include "cache.h"
+#include "symbol.h"
+#include "debug.h"
+#include "annotate.h"
+#include "evsel.h"
+#include <regex.h>
+#include <pthread.h>
+#include <linux/bitops.h>
+
+const char *disassembler_style;
+const char *objdump_path;
+static regex_t file_lineno;
+
+static struct ins *ins__find(const char *name);
+static int disasm_line__parse(char *line, char **namep, char **rawp);
+
+static void ins__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);
+}
+
+static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
+ struct ins_operands *ops)
+{
+ return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
+}
+
+int ins__scnprintf(struct ins *ins, char *bf, size_t size,
+ struct ins_operands *ops)
+{
+ if (ins->ops->scnprintf)
+ return ins->ops->scnprintf(ins, bf, size, ops);
+
+ return ins__raw_scnprintf(ins, bf, size, ops);
+}
+
+static int call__parse(struct ins_operands *ops)
+{
+ char *endptr, *tok, *name;
+
+ ops->target.addr = strtoull(ops->raw, &endptr, 16);
+
+ name = strchr(endptr, '<');
+ if (name == NULL)
+ goto indirect_call;
+
+ name++;
+
+ tok = strchr(name, '>');
+ if (tok == NULL)
+ return -1;
+
+ *tok = '\0';
+ ops->target.name = strdup(name);
+ *tok = '>';
+
+ return ops->target.name == NULL ? -1 : 0;
+
+indirect_call:
+ tok = strchr(endptr, '(');
+ if (tok != NULL) {
+ ops->target.addr = 0;
+ return 0;
+ }
+
+ tok = strchr(endptr, '*');
+ if (tok == NULL)
+ return -1;
+
+ ops->target.addr = strtoull(tok + 1, NULL, 16);
+ return 0;
+}
+
+static int call__scnprintf(struct ins *ins, char *bf, size_t size,
+ struct ins_operands *ops)
+{
+ if (ops->target.name)
+ return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);
+
+ if (ops->target.addr == 0)
+ return ins__raw_scnprintf(ins, bf, size, ops);
+
+ return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
+}
+
+static struct ins_ops call_ops = {
+ .parse = call__parse,
+ .scnprintf = call__scnprintf,
+};
+
+bool ins__is_call(const struct ins *ins)
+{
+ return ins->ops == &call_ops;
+}
+
+static int jump__parse(struct ins_operands *ops)
+{
+ const char *s = strchr(ops->raw, '+');
+
+ ops->target.addr = strtoull(ops->raw, NULL, 16);
+
+ if (s++ != NULL)
+ ops->target.offset = strtoull(s, NULL, 16);
+ else
+ ops->target.offset = UINT64_MAX;
+
+ return 0;
+}
+
+static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
+ struct ins_operands *ops)
+{
+ return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset);
+}
+
+static struct ins_ops jump_ops = {
+ .parse = jump__parse,
+ .scnprintf = jump__scnprintf,
+};
+
+bool ins__is_jump(const struct ins *ins)
+{
+ return ins->ops == &jump_ops;
+}
+
+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);
+ 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(struct ins_operands *ops)
+{
+ char *name;
+
+ ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
+ if (ops->locked.ops == NULL)
+ return 0;
+
+ if (disasm_line__parse(ops->raw, &name, &ops->locked.ops->raw) < 0)
+ goto out_free_ops;
+
+ ops->locked.ins = ins__find(name);
+ free(name);
+
+ if (ops->locked.ins == NULL)
+ goto out_free_ops;
+
+ if (!ops->locked.ins->ops)
+ return 0;
+
+ if (ops->locked.ins->ops->parse &&
+ ops->locked.ins->ops->parse(ops->locked.ops) < 0)
+ goto out_free_ops;
+
+ return 0;
+
+out_free_ops:
+ zfree(&ops->locked.ops);
+ return 0;
+}
+
+static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
+ struct ins_operands *ops)
+{
+ int printed;
+
+ if (ops->locked.ins == NULL)
+ return ins__raw_scnprintf(ins, bf, size, ops);
+
+ printed = scnprintf(bf, size, "%-6.6s ", ins->name);
+ return printed + ins__scnprintf(ops->locked.ins, bf + printed,
+ size - printed, ops->locked.ops);
+}
+
+static void lock__delete(struct ins_operands *ops)
+{
+ struct ins *ins = ops->locked.ins;
+
+ if (ins && ins->ops->free)
+ ins->ops->free(ops->locked.ops);
+ else
+ ins__delete(ops->locked.ops);
+
+ zfree(&ops->locked.ops);
+ zfree(&ops->target.raw);
+ zfree(&ops->target.name);
+}
+
+static struct ins_ops lock_ops = {
+ .free = lock__delete,
+ .parse = lock__parse,
+ .scnprintf = lock__scnprintf,
+};
+
+static int mov__parse(struct ins_operands *ops)
+{
+ char *s = strchr(ops->raw, ','), *target, *comment, prev;
+
+ if (s == NULL)
+ return -1;
+
+ *s = '\0';
+ ops->source.raw = strdup(ops->raw);
+ *s = ',';
+
+ if (ops->source.raw == NULL)
+ return -1;
+
+ target = ++s;
+ comment = strchr(s, '#');
+
+ 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;
+
+ if (comment == NULL)
+ return 0;
+
+ while (comment[0] != '\0' && isspace(comment[0]))
+ ++comment;
+
+ comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name);
+ comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
+
+ return 0;
+
+out_free_source:
+ zfree(&ops->source.raw);
+ return -1;
+}
+
+static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
+ struct ins_operands *ops)
+{
+ return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
+ ops->source.name ?: ops->source.raw,
+ ops->target.name ?: ops->target.raw);
+}
+
+static struct ins_ops mov_ops = {
+ .parse = mov__parse,
+ .scnprintf = mov__scnprintf,
+};
+
+static int dec__parse(struct ins_operands *ops)
+{
+ 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, '#');
+ if (comment == NULL)
+ return 0;
+
+ while (comment[0] != '\0' && isspace(comment[0]))
+ ++comment;
+
+ comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
+
+ return 0;
+}
+
+static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
+ struct ins_operands *ops)
+{
+ return scnprintf(bf, size, "%-6.6s %s", ins->name,
+ ops->target.name ?: ops->target.raw);
+}
+
+static struct ins_ops dec_ops = {
+ .parse = dec__parse,
+ .scnprintf = dec__scnprintf,
+};
+
+static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
+ struct ins_operands *ops __maybe_unused)
+{
+ return scnprintf(bf, size, "%-6.6s", "nop");
+}
+
+static struct ins_ops nop_ops = {
+ .scnprintf = nop__scnprintf,
+};
+
+/*
+ * Must be sorted by name!
+ */
+static struct ins instructions[] = {
+ { .name = "add", .ops = &mov_ops, },
+ { .name = "addl", .ops = &mov_ops, },
+ { .name = "addq", .ops = &mov_ops, },
+ { .name = "addw", .ops = &mov_ops, },
+ { .name = "and", .ops = &mov_ops, },
+ { .name = "bts", .ops = &mov_ops, },
+ { .name = "call", .ops = &call_ops, },
+ { .name = "callq", .ops = &call_ops, },
+ { .name = "cmp", .ops = &mov_ops, },
+ { .name = "cmpb", .ops = &mov_ops, },
+ { .name = "cmpl", .ops = &mov_ops, },
+ { .name = "cmpq", .ops = &mov_ops, },
+ { .name = "cmpw", .ops = &mov_ops, },
+ { .name = "cmpxch", .ops = &mov_ops, },
+ { .name = "dec", .ops = &dec_ops, },
+ { .name = "decl", .ops = &dec_ops, },
+ { .name = "imul", .ops = &mov_ops, },
+ { .name = "inc", .ops = &dec_ops, },
+ { .name = "incl", .ops = &dec_ops, },
+ { .name = "ja", .ops = &jump_ops, },
+ { .name = "jae", .ops = &jump_ops, },
+ { .name = "jb", .ops = &jump_ops, },
+ { .name = "jbe", .ops = &jump_ops, },
+ { .name = "jc", .ops = &jump_ops, },
+ { .name = "jcxz", .ops = &jump_ops, },
+ { .name = "je", .ops = &jump_ops, },
+ { .name = "jecxz", .ops = &jump_ops, },
+ { .name = "jg", .ops = &jump_ops, },
+ { .name = "jge", .ops = &jump_ops, },
+ { .name = "jl", .ops = &jump_ops, },
+ { .name = "jle", .ops = &jump_ops, },
+ { .name = "jmp", .ops = &jump_ops, },
+ { .name = "jmpq", .ops = &jump_ops, },
+ { .name = "jna", .ops = &jump_ops, },
+ { .name = "jnae", .ops = &jump_ops, },
+ { .name = "jnb", .ops = &jump_ops, },
+ { .name = "jnbe", .ops = &jump_ops, },
+ { .name = "jnc", .ops = &jump_ops, },
+ { .name = "jne", .ops = &jump_ops, },
+ { .name = "jng", .ops = &jump_ops, },
+ { .name = "jnge", .ops = &jump_ops, },
+ { .name = "jnl", .ops = &jump_ops, },
+ { .name = "jnle", .ops = &jump_ops, },
+ { .name = "jno", .ops = &jump_ops, },
+ { .name = "jnp", .ops = &jump_ops, },
+ { .name = "jns", .ops = &jump_ops, },
+ { .name = "jnz", .ops = &jump_ops, },
+ { .name = "jo", .ops = &jump_ops, },
+ { .name = "jp", .ops = &jump_ops, },
+ { .name = "jpe", .ops = &jump_ops, },
+ { .name = "jpo", .ops = &jump_ops, },
+ { .name = "jrcxz", .ops = &jump_ops, },
+ { .name = "js", .ops = &jump_ops, },
+ { .name = "jz", .ops = &jump_ops, },
+ { .name = "lea", .ops = &mov_ops, },
+ { .name = "lock", .ops = &lock_ops, },
+ { .name = "mov", .ops = &mov_ops, },
+ { .name = "movb", .ops = &mov_ops, },
+ { .name = "movdqa",.ops = &mov_ops, },
+ { .name = "movl", .ops = &mov_ops, },
+ { .name = "movq", .ops = &mov_ops, },
+ { .name = "movslq", .ops = &mov_ops, },
+ { .name = "movzbl", .ops = &mov_ops, },
+ { .name = "movzwl", .ops = &mov_ops, },
+ { .name = "nop", .ops = &nop_ops, },
+ { .name = "nopl", .ops = &nop_ops, },
+ { .name = "nopw", .ops = &nop_ops, },
+ { .name = "or", .ops = &mov_ops, },
+ { .name = "orl", .ops = &mov_ops, },
+ { .name = "test", .ops = &mov_ops, },
+ { .name = "testb", .ops = &mov_ops, },
+ { .name = "testl", .ops = &mov_ops, },
+ { .name = "xadd", .ops = &mov_ops, },
+ { .name = "xbeginl", .ops = &jump_ops, },
+ { .name = "xbeginq", .ops = &jump_ops, },
+};
+
+static int ins__cmp(const void *name, const void *insp)
+{
+ const struct ins *ins = insp;
+
+ return strcmp(name, ins->name);
+}
+
+static struct ins *ins__find(const char *name)
+{
+ const int nmemb = ARRAY_SIZE(instructions);
+
+ return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__cmp);
+}
+
+int symbol__annotate_init(struct map *map __maybe_unused, struct symbol *sym)
+{
+ struct annotation *notes = symbol__annotation(sym);
+ pthread_mutex_init(&notes->lock, NULL);
+ return 0;
+}
+
+int symbol__alloc_hist(struct symbol *sym)
+{
+ struct annotation *notes = symbol__annotation(sym);
+ const size_t size = symbol__size(sym);
+ size_t sizeof_sym_hist;
+
+ /* Check for overflow when calculating sizeof_sym_hist */
+ if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64))
+ return -1;
+
+ sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64));
+
+ /* Check for overflow in zalloc argument */
+ if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src))
+ / symbol_conf.nr_events)
+ return -1;
+
+ notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist);
+ if (notes->src == NULL)
+ return -1;
+ notes->src->sizeof_sym_hist = sizeof_sym_hist;
+ notes->src->nr_histograms = symbol_conf.nr_events;
+ INIT_LIST_HEAD(&notes->src->source);
+ return 0;
+}
+
+void symbol__annotate_zero_histograms(struct symbol *sym)
+{
+ struct annotation *notes = symbol__annotation(sym);
+
+ pthread_mutex_lock(&notes->lock);
+ if (notes->src != NULL)
+ memset(notes->src->histograms, 0,
+ notes->src->nr_histograms * notes->src->sizeof_sym_hist);
+ pthread_mutex_unlock(&notes->lock);
+}
+
+static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map,
+ struct annotation *notes, int evidx, u64 addr)
+{
+ unsigned offset;
+ struct sym_hist *h;
+
+ pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
+
+ if (addr < sym->start || addr >= sym->end)
+ return -ERANGE;
+
+ offset = addr - sym->start;
+ h = annotation__histogram(notes, evidx);
+ h->sum++;
+ h->addr[offset]++;
+
+ pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
+ ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,
+ addr, addr - sym->start, evidx, h->addr[offset]);
+ return 0;
+}
+
+static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
+ int evidx, u64 addr)
+{
+ struct annotation *notes;
+
+ if (sym == NULL)
+ return 0;
+
+ notes = symbol__annotation(sym);
+ if (notes->src == NULL) {
+ if (symbol__alloc_hist(sym) < 0)
+ return -ENOMEM;
+ }
+
+ return __symbol__inc_addr_samples(sym, map, notes, evidx, addr);
+}
+
+int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx)
+{
+ return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr);
+}
+
+int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip)
+{
+ return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip);
+}
+
+static void disasm_line__init_ins(struct disasm_line *dl)
+{
+ dl->ins = ins__find(dl->name);
+
+ if (dl->ins == NULL)
+ return;
+
+ if (!dl->ins->ops)
+ return;
+
+ if (dl->ins->ops->parse && dl->ins->ops->parse(&dl->ops) < 0)
+ dl->ins = NULL;
+}
+
+static int disasm_line__parse(char *line, char **namep, char **rawp)
+{
+ char *name = line, tmp;
+
+ while (isspace(name[0]))
+ ++name;
+
+ 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_free_name;
+
+ (*rawp)[0] = tmp;
+
+ if ((*rawp)[0] != '\0') {
+ (*rawp)++;
+ while (isspace((*rawp)[0]))
+ ++(*rawp);
+ }
+
+ return 0;
+
+out_free_name:
+ zfree(namep);
+ return -1;
+}
+
+static struct disasm_line *disasm_line__new(s64 offset, char *line,
+ size_t privsize, int line_nr)
+{
+ struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
+
+ if (dl != NULL) {
+ dl->offset = offset;
+ dl->line = strdup(line);
+ dl->line_nr = line_nr;
+ if (dl->line == NULL)
+ goto out_delete;
+
+ if (offset != -1) {
+ if (disasm_line__parse(dl->line, &dl->name, &dl->ops.raw) < 0)
+ goto out_free_line;
+
+ disasm_line__init_ins(dl);
+ }
+ }
+
+ return dl;
+
+out_free_line:
+ zfree(&dl->line);
+out_delete:
+ free(dl);
+ return NULL;
+}
+
+void disasm_line__free(struct disasm_line *dl)
+{
+ zfree(&dl->line);
+ zfree(&dl->name);
+ if (dl->ins && dl->ins->ops->free)
+ dl->ins->ops->free(&dl->ops);
+ else
+ ins__delete(&dl->ops);
+ free(dl);
+}
+
+int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
+{
+ if (raw || !dl->ins)
+ return scnprintf(bf, size, "%-6.6s %s", dl->name, dl->ops.raw);
+
+ return ins__scnprintf(dl->ins, bf, size, &dl->ops);
+}
+
+static void disasm__add(struct list_head *head, struct disasm_line *line)
+{
+ list_add_tail(&line->node, head);
+}
+
+struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos)
+{
+ list_for_each_entry_continue(pos, head, node)
+ if (pos->offset >= 0)
+ return pos;
+
+ return NULL;
+}
+
+double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
+ s64 end, const char **path)
+{
+ struct source_line *src_line = notes->src->lines;
+ double percent = 0.0;
+
+ if (src_line) {
+ size_t sizeof_src_line = sizeof(*src_line) +
+ sizeof(src_line->p) * (src_line->nr_pcnt - 1);
+
+ while (offset < end) {
+ src_line = (void *)notes->src->lines +
+ (sizeof_src_line * offset);
+
+ if (*path == NULL)
+ *path = src_line->path;
+
+ percent += src_line->p[evidx].percent;
+ offset++;
+ }
+ } else {
+ struct sym_hist *h = annotation__histogram(notes, evidx);
+ unsigned int hits = 0;
+
+ while (offset < end)
+ hits += h->addr[offset++];
+
+ if (h->sum)
+ percent = 100.0 * hits / h->sum;
+ }
+
+ return percent;
+}
+
+static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start,
+ struct perf_evsel *evsel, u64 len, int min_pcnt, int printed,
+ int max_lines, struct disasm_line *queue)
+{
+ static const char *prev_line;
+ static const char *prev_color;
+
+ if (dl->offset != -1) {
+ const char *path = NULL;
+ double percent, max_percent = 0.0;
+ double *ppercents = &percent;
+ int i, nr_percent = 1;
+ const char *color;
+ struct annotation *notes = symbol__annotation(sym);
+ s64 offset = dl->offset;
+ const u64 addr = start + offset;
+ struct disasm_line *next;
+
+ next = disasm__get_next_ip_line(&notes->src->source, dl);
+
+ if (perf_evsel__is_group_event(evsel)) {
+ nr_percent = evsel->nr_members;
+ ppercents = calloc(nr_percent, sizeof(double));
+ if (ppercents == NULL)
+ return -1;
+ }
+
+ for (i = 0; i < nr_percent; i++) {
+ percent = disasm__calc_percent(notes,
+ notes->src->lines ? i : evsel->idx + i,
+ offset,
+ next ? next->offset : (s64) len,
+ &path);
+
+ ppercents[i] = percent;
+ if (percent > max_percent)
+ max_percent = percent;
+ }
+
+ if (max_percent < min_pcnt)
+ return -1;
+
+ if (max_lines && printed >= max_lines)
+ return 1;
+
+ if (queue != NULL) {
+ list_for_each_entry_from(queue, &notes->src->source, node) {
+ if (queue == dl)
+ break;
+ disasm_line__print(queue, sym, start, evsel, len,
+ 0, 0, 1, NULL);
+ }
+ }
+
+ color = get_percent_color(max_percent);
+
+ /*
+ * Also color the filename and line if needed, with
+ * the same color than the percentage. Don't print it
+ * twice for close colored addr with the same filename:line
+ */
+ if (path) {
+ if (!prev_line || strcmp(prev_line, path)
+ || color != prev_color) {
+ color_fprintf(stdout, color, " %s", path);
+ prev_line = path;
+ prev_color = color;
+ }
+ }
+
+ for (i = 0; i < nr_percent; i++) {
+ percent = ppercents[i];
+ color = get_percent_color(percent);
+ color_fprintf(stdout, color, " %7.2f", percent);
+ }
+
+ printf(" : ");
+ color_fprintf(stdout, PERF_COLOR_MAGENTA, " %" PRIx64 ":", addr);
+ color_fprintf(stdout, PERF_COLOR_BLUE, "%s\n", dl->line);
+
+ if (ppercents != &percent)
+ free(ppercents);
+
+ } else if (max_lines && printed >= max_lines)
+ return 1;
+ else {
+ int width = 8;
+
+ if (queue)
+ return -1;
+
+ if (perf_evsel__is_group_event(evsel))
+ width *= evsel->nr_members;
+
+ if (!*dl->line)
+ printf(" %*s:\n", width, " ");
+ else
+ printf(" %*s: %s\n", width, " ", dl->line);
+ }
+
+ return 0;
+}
+
+/*
+ * 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 map *map,
+ FILE *file, size_t privsize,
+ int *line_nr)
+{
+ struct annotation *notes = symbol__annotation(sym);
+ struct disasm_line *dl;
+ char *line = NULL, *parsed_line, *tmp, *tmp2, *c;
+ size_t line_len;
+ s64 line_ip, offset = -1;
+ regmatch_t match[2];
+
+ if (getline(&line, &line_len, file) < 0)
+ return -1;
+
+ if (!line)
+ return -1;
+
+ while (line_len != 0 && isspace(line[line_len - 1]))
+ line[--line_len] = '\0';
+
+ c = strchr(line, '\n');
+ if (c)
+ *c = 0;
+
+ line_ip = -1;
+ parsed_line = line;
+
+ /* /filename:linenr ? Save line number and ignore. */
+ if (regexec(&file_lineno, line, 2, match, 0) == 0) {
+ *line_nr = atoi(line + match[1].rm_so);
+ return 0;
+ }
+
+ /*
+ * Strip leading spaces:
+ */
+ tmp = line;
+ while (*tmp) {
+ if (*tmp != ' ')
+ break;
+ tmp++;
+ }
+
+ if (*tmp) {
+ /*
+ * Parse hexa addresses followed by ':'
+ */
+ line_ip = strtoull(tmp, &tmp2, 16);
+ if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
+ line_ip = -1;
+ }
+
+ if (line_ip != -1) {
+ 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 = tmp2 + 1;
+ }
+
+ dl = disasm_line__new(offset, parsed_line, privsize, *line_nr);
+ free(line);
+ (*line_nr)++;
+
+ if (dl == NULL)
+ return -1;
+
+ if (dl->ops.target.offset == UINT64_MAX)
+ dl->ops.target.offset = dl->ops.target.addr -
+ map__rip_2objdump(map, sym->start);
+
+ /* kcore has no symbols, so add the call target name */
+ if (dl->ins && ins__is_call(dl->ins) && !dl->ops.target.name) {
+ struct addr_map_symbol target = {
+ .map = map,
+ .addr = dl->ops.target.addr,
+ };
+
+ if (!map_groups__find_ams(&target, NULL) &&
+ target.sym->start == target.al_addr)
+ dl->ops.target.name = strdup(target.sym->name);
+ }
+
+ disasm__add(&notes->src->source, dl);
+
+ return 0;
+}
+
+static __attribute__((constructor)) void symbol__init_regexpr(void)
+{
+ regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED);
+}
+
+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, node);
+
+ if (dl->ins && dl->ins->ops) {
+ if (dl->ins->ops != &nop_ops)
+ return;
+ } else {
+ if (!strstr(dl->line, " nop ") &&
+ !strstr(dl->line, " nopl ") &&
+ !strstr(dl->line, " nopw "))
+ return;
+ }
+
+ list_del(&dl->node);
+ disasm_line__free(dl);
+ }
+}
+
+int symbol__annotate(struct symbol *sym, struct map *map, size_t privsize)
+{
+ struct dso *dso = map->dso;
+ char *filename = dso__build_id_filename(dso, NULL, 0);
+ bool free_filename = true;
+ char command[PATH_MAX * 2];
+ FILE *file;
+ int err = 0;
+ char symfs_filename[PATH_MAX];
+ struct kcore_extract kce;
+ bool delete_extract = false;
+ int lineno = 0;
+
+ if (filename)
+ symbol__join_symfs(symfs_filename, filename);
+
+ if (filename == NULL) {
+ if (dso->has_build_id) {
+ pr_err("Can't annotate %s: not enough memory\n",
+ sym->name);
+ return -ENOMEM;
+ }
+ goto fallback;
+ } else if (dso__is_kcore(dso)) {
+ goto fallback;
+ } else if (readlink(symfs_filename, command, sizeof(command)) < 0 ||
+ strstr(command, "[kernel.kallsyms]") ||
+ access(symfs_filename, R_OK)) {
+ free(filename);
+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.
+ */
+ filename = (char *)dso->long_name;
+ symbol__join_symfs(symfs_filename, filename);
+ free_filename = false;
+ }
+
+ if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
+ !dso__is_kcore(dso)) {
+ char bf[BUILD_ID_SIZE * 2 + 16] = " with build id ";
+ char *build_id_msg = NULL;
+
+ if (dso->annotate_warned)
+ goto out_free_filename;
+
+ if (dso->has_build_id) {
+ build_id__sprintf(dso->build_id,
+ sizeof(dso->build_id), bf + 15);
+ build_id_msg = bf;
+ }
+ err = -ENOENT;
+ dso->annotate_warned = 1;
+ pr_err("Can't annotate %s:\n\n"
+ "No vmlinux file%s\nwas found in the path.\n\n"
+ "Please use:\n\n"
+ " perf buildid-cache -vu vmlinux\n\n"
+ "or:\n\n"
+ " --vmlinux vmlinux\n",
+ sym->name, build_id_msg ?: "");
+ goto out_free_filename;
+ }
+
+ pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
+ 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, sym, sym->name);
+
+ if (dso__is_kcore(dso)) {
+ kce.kcore_filename = symfs_filename;
+ kce.addr = map__rip_2objdump(map, sym->start);
+ kce.offs = sym->start;
+ kce.len = sym->end - sym->start;
+ if (!kcore_extract__create(&kce)) {
+ delete_extract = true;
+ strlcpy(symfs_filename, kce.extract_filename,
+ sizeof(symfs_filename));
+ if (free_filename) {
+ free(filename);
+ free_filename = false;
+ }
+ filename = symfs_filename;
+ }
+ } else if (dso__needs_decompress(dso)) {
+ char tmp[PATH_MAX];
+ struct kmod_path m;
+ int fd;
+ bool ret;
+
+ if (kmod_path__parse_ext(&m, symfs_filename))
+ goto out_free_filename;
+
+ snprintf(tmp, PATH_MAX, "/tmp/perf-kmod-XXXXXX");
+
+ fd = mkstemp(tmp);
+ if (fd < 0) {
+ free(m.ext);
+ goto out_free_filename;
+ }
+
+ ret = decompress_to_file(m.ext, symfs_filename, fd);
+
+ free(m.ext);
+ close(fd);
+
+ if (!ret)
+ goto out_free_filename;
+
+ strcpy(symfs_filename, tmp);
+ }
+
+ snprintf(command, sizeof(command),
+ "%s %s%s --start-address=0x%016" PRIx64
+ " --stop-address=0x%016" PRIx64
+ " -l -d %s %s -C %s 2>/dev/null|grep -v %s|expand",
+ objdump_path ? objdump_path : "objdump",
+ disassembler_style ? "-M " : "",
+ disassembler_style ? disassembler_style : "",
+ map__rip_2objdump(map, sym->start),
+ map__rip_2objdump(map, sym->end),
+ symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
+ symbol_conf.annotate_src ? "-S" : "",
+ symfs_filename, filename);
+
+ pr_debug("Executing: %s\n", command);
+
+ file = popen(command, "r");
+ if (!file)
+ goto out_remove_tmp;
+
+ while (!feof(file))
+ if (symbol__parse_objdump_line(sym, map, file, privsize,
+ &lineno) < 0)
+ break;
+
+ /*
+ * 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);
+
+ pclose(file);
+
+out_remove_tmp:
+ if (dso__needs_decompress(dso))
+ unlink(symfs_filename);
+out_free_filename:
+ if (delete_extract)
+ kcore_extract__delete(&kce);
+ if (free_filename)
+ free(filename);
+ return err;
+}
+
+static void insert_source_line(struct rb_root *root, struct source_line *src_line)
+{
+ struct source_line *iter;
+ struct rb_node **p = &root->rb_node;
+ struct rb_node *parent = NULL;
+ int i, ret;
+
+ while (*p != NULL) {
+ parent = *p;
+ iter = rb_entry(parent, struct source_line, node);
+
+ ret = strcmp(iter->path, src_line->path);
+ if (ret == 0) {
+ for (i = 0; i < src_line->nr_pcnt; i++)
+ iter->p[i].percent_sum += src_line->p[i].percent;
+ return;
+ }
+
+ if (ret < 0)
+ p = &(*p)->rb_left;
+ else
+ p = &(*p)->rb_right;
+ }
+
+ for (i = 0; i < src_line->nr_pcnt; i++)
+ src_line->p[i].percent_sum = src_line->p[i].percent;
+
+ rb_link_node(&src_line->node, parent, p);
+ rb_insert_color(&src_line->node, root);
+}
+
+static int cmp_source_line(struct source_line *a, struct source_line *b)
+{
+ int i;
+
+ for (i = 0; i < a->nr_pcnt; i++) {
+ if (a->p[i].percent_sum == b->p[i].percent_sum)
+ continue;
+ return a->p[i].percent_sum > b->p[i].percent_sum;
+ }
+
+ return 0;
+}
+
+static void __resort_source_line(struct rb_root *root, struct source_line *src_line)
+{
+ struct source_line *iter;
+ struct rb_node **p = &root->rb_node;
+ struct rb_node *parent = NULL;
+
+ while (*p != NULL) {
+ parent = *p;
+ iter = rb_entry(parent, struct source_line, node);
+
+ if (cmp_source_line(src_line, iter))
+ p = &(*p)->rb_left;
+ else
+ p = &(*p)->rb_right;
+ }
+
+ rb_link_node(&src_line->node, parent, p);
+ rb_insert_color(&src_line->node, root);
+}
+
+static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
+{
+ struct source_line *src_line;
+ struct rb_node *node;
+
+ node = rb_first(src_root);
+ while (node) {
+ struct rb_node *next;
+
+ src_line = rb_entry(node, struct source_line, node);
+ next = rb_next(node);
+ rb_erase(node, src_root);
+
+ __resort_source_line(dest_root, src_line);
+ node = next;
+ }
+}
+
+static void symbol__free_source_line(struct symbol *sym, int len)
+{
+ struct annotation *notes = symbol__annotation(sym);
+ struct source_line *src_line = notes->src->lines;
+ size_t sizeof_src_line;
+ int i;
+
+ sizeof_src_line = sizeof(*src_line) +
+ (sizeof(src_line->p) * (src_line->nr_pcnt - 1));
+
+ for (i = 0; i < len; i++) {
+ free_srcline(src_line->path);
+ src_line = (void *)src_line + sizeof_src_line;
+ }
+
+ zfree(&notes->src->lines);
+}
+
+/* Get the filename:line for the colored entries */
+static int symbol__get_source_line(struct symbol *sym, struct map *map,
+ struct perf_evsel *evsel,
+ struct rb_root *root, int len)
+{
+ u64 start;
+ int i, k;
+ int evidx = evsel->idx;
+ struct source_line *src_line;
+ struct annotation *notes = symbol__annotation(sym);
+ struct sym_hist *h = annotation__histogram(notes, evidx);
+ struct rb_root tmp_root = RB_ROOT;
+ int nr_pcnt = 1;
+ u64 h_sum = h->sum;
+ size_t sizeof_src_line = sizeof(struct source_line);
+
+ if (perf_evsel__is_group_event(evsel)) {
+ for (i = 1; i < evsel->nr_members; i++) {
+ h = annotation__histogram(notes, evidx + i);
+ h_sum += h->sum;
+ }
+ nr_pcnt = evsel->nr_members;
+ sizeof_src_line += (nr_pcnt - 1) * sizeof(src_line->p);
+ }
+
+ if (!h_sum)
+ return 0;
+
+ src_line = notes->src->lines = calloc(len, sizeof_src_line);
+ if (!notes->src->lines)
+ return -1;
+
+ start = map__rip_2objdump(map, sym->start);
+
+ for (i = 0; i < len; i++) {
+ u64 offset;
+ double percent_max = 0.0;
+
+ src_line->nr_pcnt = nr_pcnt;
+
+ for (k = 0; k < nr_pcnt; k++) {
+ h = annotation__histogram(notes, evidx + k);
+ src_line->p[k].percent = 100.0 * h->addr[i] / h->sum;
+
+ if (src_line->p[k].percent > percent_max)
+ percent_max = src_line->p[k].percent;
+ }
+
+ if (percent_max <= 0.5)
+ goto next;
+
+ offset = start + i;
+ src_line->path = get_srcline(map->dso, offset, NULL, false);
+ insert_source_line(&tmp_root, src_line);
+
+ next:
+ src_line = (void *)src_line + sizeof_src_line;
+ }
+
+ resort_source_line(root, &tmp_root);
+ return 0;
+}
+
+static void print_summary(struct rb_root *root, const char *filename)
+{
+ struct source_line *src_line;
+ struct rb_node *node;
+
+ printf("\nSorted summary for file %s\n", filename);
+ printf("----------------------------------------------\n\n");
+
+ if (RB_EMPTY_ROOT(root)) {
+ printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
+ return;
+ }
+
+ node = rb_first(root);
+ while (node) {
+ double percent, percent_max = 0.0;
+ const char *color;
+ char *path;
+ int i;
+
+ src_line = rb_entry(node, struct source_line, node);
+ for (i = 0; i < src_line->nr_pcnt; i++) {
+ percent = src_line->p[i].percent_sum;
+ color = get_percent_color(percent);
+ color_fprintf(stdout, color, " %7.2f", percent);
+
+ if (percent > percent_max)
+ percent_max = percent;
+ }
+
+ path = src_line->path;
+ color = get_percent_color(percent_max);
+ color_fprintf(stdout, color, " %s\n", path);
+
+ node = rb_next(node);
+ }
+}
+
+static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel)
+{
+ struct annotation *notes = symbol__annotation(sym);
+ struct sym_hist *h = annotation__histogram(notes, evsel->idx);
+ u64 len = symbol__size(sym), offset;
+
+ for (offset = 0; offset < len; ++offset)
+ if (h->addr[offset] != 0)
+ printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
+ sym->start + offset, h->addr[offset]);
+ printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);
+}
+
+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)
+{
+ struct dso *dso = map->dso;
+ char *filename;
+ const char *d_filename;
+ const char *evsel_name = perf_evsel__name(evsel);
+ struct annotation *notes = symbol__annotation(sym);
+ struct disasm_line *pos, *queue = NULL;
+ u64 start = map__rip_2objdump(map, sym->start);
+ int printed = 2, queue_len = 0;
+ int more = 0;
+ u64 len;
+ int width = 8;
+ int namelen, evsel_name_len, graph_dotted_len;
+
+ filename = strdup(dso->long_name);
+ if (!filename)
+ return -ENOMEM;
+
+ if (full_paths)
+ d_filename = filename;
+ else
+ d_filename = basename(filename);
+
+ len = symbol__size(sym);
+ namelen = strlen(d_filename);
+ evsel_name_len = strlen(evsel_name);
+
+ if (perf_evsel__is_group_event(evsel))
+ width *= evsel->nr_members;
+
+ printf(" %-*.*s| Source code & Disassembly of %s for %s\n",
+ width, width, "Percent", d_filename, evsel_name);
+
+ graph_dotted_len = width + namelen + evsel_name_len;
+ printf("-%-*.*s-----------------------------------------\n",
+ graph_dotted_len, graph_dotted_len, graph_dotted_line);
+
+ if (verbose)
+ symbol__annotate_hits(sym, evsel);
+
+ list_for_each_entry(pos, &notes->src->source, node) {
+ if (context && queue == NULL) {
+ queue = pos;
+ queue_len = 0;
+ }
+
+ switch (disasm_line__print(pos, sym, start, evsel, len,
+ min_pcnt, printed, max_lines,
+ queue)) {
+ case 0:
+ ++printed;
+ if (context) {
+ printed += queue_len;
+ queue = NULL;
+ queue_len = 0;
+ }
+ break;
+ case 1:
+ /* filtered by max_lines */
+ ++more;
+ break;
+ case -1:
+ default:
+ /*
+ * Filtered by min_pcnt or non IP lines when
+ * context != 0
+ */
+ if (!context)
+ break;
+ if (queue_len == context)
+ queue = list_entry(queue->node.next, typeof(*queue), node);
+ else
+ ++queue_len;
+ break;
+ }
+ }
+
+ free(filename);
+
+ return more;
+}
+
+void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
+{
+ struct annotation *notes = symbol__annotation(sym);
+ struct sym_hist *h = annotation__histogram(notes, evidx);
+
+ memset(h, 0, notes->src->sizeof_sym_hist);
+}
+
+void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
+{
+ struct annotation *notes = symbol__annotation(sym);
+ struct sym_hist *h = annotation__histogram(notes, evidx);
+ int len = symbol__size(sym), offset;
+
+ h->sum = 0;
+ for (offset = 0; offset < len; ++offset) {
+ h->addr[offset] = h->addr[offset] * 7 / 8;
+ h->sum += h->addr[offset];
+ }
+}
+
+void disasm__purge(struct list_head *head)
+{
+ struct disasm_line *pos, *n;
+
+ list_for_each_entry_safe(pos, n, head, node) {
+ list_del(&pos->node);
+ disasm_line__free(pos);
+ }
+}
+
+static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
+{
+ size_t printed;
+
+ if (dl->offset == -1)
+ return fprintf(fp, "%s\n", dl->line);
+
+ printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->name);
+
+ if (dl->ops.raw[0] != '\0') {
+ printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
+ dl->ops.raw);
+ }
+
+ return printed + fprintf(fp, "\n");
+}
+
+size_t disasm__fprintf(struct list_head *head, FILE *fp)
+{
+ struct disasm_line *pos;
+ size_t printed = 0;
+
+ list_for_each_entry(pos, head, node)
+ printed += disasm_line__fprintf(pos, fp);
+
+ return printed;
+}
+
+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)
+{
+ struct dso *dso = map->dso;
+ struct rb_root source_line = RB_ROOT;
+ u64 len;
+
+ if (symbol__annotate(sym, map, 0) < 0)
+ return -1;
+
+ len = symbol__size(sym);
+
+ if (print_lines) {
+ symbol__get_source_line(sym, map, evsel, &source_line, len);
+ print_summary(&source_line, dso->long_name);
+ }
+
+ symbol__annotate_printf(sym, map, evsel, full_paths,
+ min_pcnt, max_lines, 0);
+ if (print_lines)
+ symbol__free_source_line(sym, len);
+
+ disasm__purge(&symbol__annotation(sym)->src->source);
+
+ return 0;
+}
+
+int hist_entry__annotate(struct hist_entry *he, size_t privsize)
+{
+ return symbol__annotate(he->ms.sym, he->ms.map, privsize);
+}
+
+bool ui__has_annotation(void)
+{
+ return use_browser == 1 && sort__has_sym;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-11 19:33:07 +0000