1402 lines
33 KiB
C
1402 lines
33 KiB
C
/*
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* Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
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*
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* Parts came from builtin-annotate.c, see those files for further
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* copyright notes.
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*
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* Released under the GPL v2. (and only v2, not any later version)
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*/
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#include "util.h"
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#include "build-id.h"
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#include "color.h"
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#include "cache.h"
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#include "symbol.h"
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#include "debug.h"
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#include "annotate.h"
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#include "evsel.h"
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#include <pthread.h>
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#include <linux/bitops.h>
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const char *disassembler_style;
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const char *objdump_path;
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static struct ins *ins__find(const char *name);
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static int disasm_line__parse(char *line, char **namep, char **rawp);
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static void ins__delete(struct ins_operands *ops)
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{
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zfree(&ops->source.raw);
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zfree(&ops->source.name);
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zfree(&ops->target.raw);
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zfree(&ops->target.name);
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}
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static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
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struct ins_operands *ops)
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{
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return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
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}
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int ins__scnprintf(struct ins *ins, char *bf, size_t size,
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struct ins_operands *ops)
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{
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if (ins->ops->scnprintf)
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return ins->ops->scnprintf(ins, bf, size, ops);
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return ins__raw_scnprintf(ins, bf, size, ops);
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}
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static int call__parse(struct ins_operands *ops)
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{
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char *endptr, *tok, *name;
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ops->target.addr = strtoull(ops->raw, &endptr, 16);
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name = strchr(endptr, '<');
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if (name == NULL)
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goto indirect_call;
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name++;
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tok = strchr(name, '>');
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if (tok == NULL)
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return -1;
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*tok = '\0';
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ops->target.name = strdup(name);
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*tok = '>';
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return ops->target.name == NULL ? -1 : 0;
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indirect_call:
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tok = strchr(endptr, '(');
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if (tok != NULL) {
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ops->target.addr = 0;
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return 0;
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}
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tok = strchr(endptr, '*');
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if (tok == NULL)
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return -1;
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ops->target.addr = strtoull(tok + 1, NULL, 16);
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return 0;
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}
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static int call__scnprintf(struct ins *ins, char *bf, size_t size,
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struct ins_operands *ops)
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{
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if (ops->target.name)
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return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);
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if (ops->target.addr == 0)
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return ins__raw_scnprintf(ins, bf, size, ops);
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return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
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}
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static struct ins_ops call_ops = {
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.parse = call__parse,
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.scnprintf = call__scnprintf,
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};
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bool ins__is_call(const struct ins *ins)
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{
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return ins->ops == &call_ops;
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}
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static int jump__parse(struct ins_operands *ops)
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{
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const char *s = strchr(ops->raw, '+');
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ops->target.addr = strtoull(ops->raw, NULL, 16);
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if (s++ != NULL)
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ops->target.offset = strtoull(s, NULL, 16);
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else
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ops->target.offset = UINT64_MAX;
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return 0;
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}
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static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
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struct ins_operands *ops)
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{
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return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset);
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}
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static struct ins_ops jump_ops = {
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.parse = jump__parse,
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.scnprintf = jump__scnprintf,
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};
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bool ins__is_jump(const struct ins *ins)
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{
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return ins->ops == &jump_ops;
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}
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static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
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{
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char *endptr, *name, *t;
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if (strstr(raw, "(%rip)") == NULL)
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return 0;
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*addrp = strtoull(comment, &endptr, 16);
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name = strchr(endptr, '<');
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if (name == NULL)
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return -1;
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name++;
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t = strchr(name, '>');
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if (t == NULL)
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return 0;
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*t = '\0';
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*namep = strdup(name);
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*t = '>';
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return 0;
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}
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static int lock__parse(struct ins_operands *ops)
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{
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char *name;
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ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
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if (ops->locked.ops == NULL)
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return 0;
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if (disasm_line__parse(ops->raw, &name, &ops->locked.ops->raw) < 0)
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goto out_free_ops;
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ops->locked.ins = ins__find(name);
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if (ops->locked.ins == NULL)
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goto out_free_ops;
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if (!ops->locked.ins->ops)
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return 0;
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if (ops->locked.ins->ops->parse)
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ops->locked.ins->ops->parse(ops->locked.ops);
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return 0;
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out_free_ops:
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zfree(&ops->locked.ops);
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return 0;
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}
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static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
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struct ins_operands *ops)
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{
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int printed;
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if (ops->locked.ins == NULL)
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return ins__raw_scnprintf(ins, bf, size, ops);
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printed = scnprintf(bf, size, "%-6.6s ", ins->name);
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return printed + ins__scnprintf(ops->locked.ins, bf + printed,
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size - printed, ops->locked.ops);
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}
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static void lock__delete(struct ins_operands *ops)
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{
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zfree(&ops->locked.ops);
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zfree(&ops->target.raw);
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zfree(&ops->target.name);
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}
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static struct ins_ops lock_ops = {
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.free = lock__delete,
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.parse = lock__parse,
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.scnprintf = lock__scnprintf,
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};
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static int mov__parse(struct ins_operands *ops)
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{
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char *s = strchr(ops->raw, ','), *target, *comment, prev;
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if (s == NULL)
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return -1;
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*s = '\0';
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ops->source.raw = strdup(ops->raw);
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*s = ',';
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if (ops->source.raw == NULL)
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return -1;
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target = ++s;
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while (s[0] != '\0' && !isspace(s[0]))
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++s;
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prev = *s;
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*s = '\0';
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ops->target.raw = strdup(target);
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*s = prev;
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if (ops->target.raw == NULL)
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goto out_free_source;
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comment = strchr(s, '#');
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if (comment == NULL)
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return 0;
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while (comment[0] != '\0' && isspace(comment[0]))
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++comment;
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comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name);
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comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
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return 0;
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out_free_source:
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zfree(&ops->source.raw);
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return -1;
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}
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static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
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struct ins_operands *ops)
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{
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return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
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ops->source.name ?: ops->source.raw,
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ops->target.name ?: ops->target.raw);
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}
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static struct ins_ops mov_ops = {
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.parse = mov__parse,
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.scnprintf = mov__scnprintf,
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};
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static int dec__parse(struct ins_operands *ops)
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{
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char *target, *comment, *s, prev;
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target = s = ops->raw;
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while (s[0] != '\0' && !isspace(s[0]))
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++s;
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prev = *s;
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*s = '\0';
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ops->target.raw = strdup(target);
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*s = prev;
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if (ops->target.raw == NULL)
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return -1;
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comment = strchr(s, '#');
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if (comment == NULL)
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return 0;
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while (comment[0] != '\0' && isspace(comment[0]))
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++comment;
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comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);
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return 0;
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}
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static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
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struct ins_operands *ops)
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{
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return scnprintf(bf, size, "%-6.6s %s", ins->name,
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ops->target.name ?: ops->target.raw);
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}
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static struct ins_ops dec_ops = {
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.parse = dec__parse,
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.scnprintf = dec__scnprintf,
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};
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static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
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struct ins_operands *ops __maybe_unused)
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{
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return scnprintf(bf, size, "%-6.6s", "nop");
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}
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static struct ins_ops nop_ops = {
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.scnprintf = nop__scnprintf,
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};
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/*
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* Must be sorted by name!
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*/
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static struct ins instructions[] = {
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{ .name = "add", .ops = &mov_ops, },
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{ .name = "addl", .ops = &mov_ops, },
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{ .name = "addq", .ops = &mov_ops, },
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{ .name = "addw", .ops = &mov_ops, },
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{ .name = "and", .ops = &mov_ops, },
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{ .name = "bts", .ops = &mov_ops, },
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{ .name = "call", .ops = &call_ops, },
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{ .name = "callq", .ops = &call_ops, },
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{ .name = "cmp", .ops = &mov_ops, },
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{ .name = "cmpb", .ops = &mov_ops, },
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{ .name = "cmpl", .ops = &mov_ops, },
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{ .name = "cmpq", .ops = &mov_ops, },
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{ .name = "cmpw", .ops = &mov_ops, },
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{ .name = "cmpxch", .ops = &mov_ops, },
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{ .name = "dec", .ops = &dec_ops, },
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{ .name = "decl", .ops = &dec_ops, },
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{ .name = "imul", .ops = &mov_ops, },
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{ .name = "inc", .ops = &dec_ops, },
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{ .name = "incl", .ops = &dec_ops, },
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{ .name = "ja", .ops = &jump_ops, },
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{ .name = "jae", .ops = &jump_ops, },
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{ .name = "jb", .ops = &jump_ops, },
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{ .name = "jbe", .ops = &jump_ops, },
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{ .name = "jc", .ops = &jump_ops, },
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{ .name = "jcxz", .ops = &jump_ops, },
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{ .name = "je", .ops = &jump_ops, },
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{ .name = "jecxz", .ops = &jump_ops, },
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{ .name = "jg", .ops = &jump_ops, },
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{ .name = "jge", .ops = &jump_ops, },
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{ .name = "jl", .ops = &jump_ops, },
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{ .name = "jle", .ops = &jump_ops, },
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{ .name = "jmp", .ops = &jump_ops, },
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{ .name = "jmpq", .ops = &jump_ops, },
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{ .name = "jna", .ops = &jump_ops, },
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{ .name = "jnae", .ops = &jump_ops, },
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{ .name = "jnb", .ops = &jump_ops, },
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{ .name = "jnbe", .ops = &jump_ops, },
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{ .name = "jnc", .ops = &jump_ops, },
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{ .name = "jne", .ops = &jump_ops, },
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{ .name = "jng", .ops = &jump_ops, },
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{ .name = "jnge", .ops = &jump_ops, },
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{ .name = "jnl", .ops = &jump_ops, },
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{ .name = "jnle", .ops = &jump_ops, },
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{ .name = "jno", .ops = &jump_ops, },
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{ .name = "jnp", .ops = &jump_ops, },
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{ .name = "jns", .ops = &jump_ops, },
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{ .name = "jnz", .ops = &jump_ops, },
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{ .name = "jo", .ops = &jump_ops, },
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{ .name = "jp", .ops = &jump_ops, },
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{ .name = "jpe", .ops = &jump_ops, },
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{ .name = "jpo", .ops = &jump_ops, },
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{ .name = "jrcxz", .ops = &jump_ops, },
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{ .name = "js", .ops = &jump_ops, },
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{ .name = "jz", .ops = &jump_ops, },
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{ .name = "lea", .ops = &mov_ops, },
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{ .name = "lock", .ops = &lock_ops, },
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{ .name = "mov", .ops = &mov_ops, },
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{ .name = "movb", .ops = &mov_ops, },
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{ .name = "movdqa",.ops = &mov_ops, },
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{ .name = "movl", .ops = &mov_ops, },
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{ .name = "movq", .ops = &mov_ops, },
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{ .name = "movslq", .ops = &mov_ops, },
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{ .name = "movzbl", .ops = &mov_ops, },
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{ .name = "movzwl", .ops = &mov_ops, },
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{ .name = "nop", .ops = &nop_ops, },
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{ .name = "nopl", .ops = &nop_ops, },
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{ .name = "nopw", .ops = &nop_ops, },
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{ .name = "or", .ops = &mov_ops, },
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{ .name = "orl", .ops = &mov_ops, },
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{ .name = "test", .ops = &mov_ops, },
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{ .name = "testb", .ops = &mov_ops, },
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{ .name = "testl", .ops = &mov_ops, },
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{ .name = "xadd", .ops = &mov_ops, },
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{ .name = "xbeginl", .ops = &jump_ops, },
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{ .name = "xbeginq", .ops = &jump_ops, },
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};
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static int ins__cmp(const void *name, const void *insp)
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{
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const struct ins *ins = insp;
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return strcmp(name, ins->name);
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}
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static struct ins *ins__find(const char *name)
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{
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const int nmemb = ARRAY_SIZE(instructions);
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return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__cmp);
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}
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int symbol__annotate_init(struct map *map __maybe_unused, struct symbol *sym)
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{
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struct annotation *notes = symbol__annotation(sym);
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pthread_mutex_init(¬es->lock, NULL);
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return 0;
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}
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int symbol__alloc_hist(struct symbol *sym)
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{
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struct annotation *notes = symbol__annotation(sym);
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const size_t size = symbol__size(sym);
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size_t sizeof_sym_hist;
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/* Check for overflow when calculating sizeof_sym_hist */
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if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64))
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return -1;
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sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64));
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|
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/* Check for overflow in zalloc argument */
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if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src))
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/ symbol_conf.nr_events)
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return -1;
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notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist);
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if (notes->src == NULL)
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return -1;
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notes->src->sizeof_sym_hist = sizeof_sym_hist;
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notes->src->nr_histograms = symbol_conf.nr_events;
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INIT_LIST_HEAD(¬es->src->source);
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return 0;
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}
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void symbol__annotate_zero_histograms(struct symbol *sym)
|
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{
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struct annotation *notes = symbol__annotation(sym);
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pthread_mutex_lock(¬es->lock);
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if (notes->src != NULL)
|
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memset(notes->src->histograms, 0,
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notes->src->nr_histograms * notes->src->sizeof_sym_hist);
|
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pthread_mutex_unlock(¬es->lock);
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}
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|
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static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map,
|
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struct annotation *notes, int evidx, u64 addr)
|
|
{
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unsigned offset;
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struct sym_hist *h;
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pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
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if (addr < sym->start || addr > sym->end)
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return -ERANGE;
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offset = addr - sym->start;
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h = annotation__histogram(notes, evidx);
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h->sum++;
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h->addr[offset]++;
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pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
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", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,
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addr, addr - sym->start, evidx, h->addr[offset]);
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return 0;
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}
|
|
|
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static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
|
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int evidx, u64 addr)
|
|
{
|
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struct annotation *notes;
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|
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if (sym == NULL || use_browser != 1 || !sort__has_sym)
|
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return 0;
|
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|
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notes = symbol__annotation(sym);
|
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if (notes->src == NULL) {
|
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if (symbol__alloc_hist(sym) < 0)
|
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return -ENOMEM;
|
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}
|
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|
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return __symbol__inc_addr_samples(sym, map, notes, evidx, addr);
|
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}
|
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|
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int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx)
|
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{
|
|
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);
|
|
}
|
|
|
|
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)
|
|
{
|
|
struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);
|
|
|
|
if (dl != NULL) {
|
|
dl->offset = offset;
|
|
dl->line = strdup(line);
|
|
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(¬es->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, ¬es->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)
|
|
{
|
|
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;
|
|
|
|
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;
|
|
|
|
/*
|
|
* 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);
|
|
free(line);
|
|
|
|
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(¬es->src->source, dl);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void delete_last_nop(struct symbol *sym)
|
|
{
|
|
struct annotation *notes = symbol__annotation(sym);
|
|
struct list_head *list = ¬es->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;
|
|
|
|
if (filename) {
|
|
snprintf(symfs_filename, sizeof(symfs_filename), "%s%s",
|
|
symbol_conf.symfs, 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 (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;
|
|
snprintf(symfs_filename, sizeof(symfs_filename), "%s%s",
|
|
symbol_conf.symfs, 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 + 1 - 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;
|
|
}
|
|
}
|
|
|
|
snprintf(command, sizeof(command),
|
|
"%s %s%s --start-address=0x%016" PRIx64
|
|
" --stop-address=0x%016" PRIx64
|
|
" -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+1),
|
|
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_free_filename;
|
|
|
|
while (!feof(file))
|
|
if (symbol__parse_objdump_line(sym, map, file, privsize) < 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_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(¬es->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);
|
|
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;
|
|
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;
|
|
|
|
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);
|
|
|
|
if (perf_evsel__is_group_event(evsel))
|
|
width *= evsel->nr_members;
|
|
|
|
printf(" %-*.*s| Source code & Disassembly of %s\n",
|
|
width, width, "Percent", d_filename);
|
|
printf("-%-*.*s-------------------------------------\n",
|
|
width+namelen, width+namelen, graph_dotted_line);
|
|
|
|
if (verbose)
|
|
symbol__annotate_hits(sym, evsel);
|
|
|
|
list_for_each_entry(pos, ¬es->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);
|
|
}
|