2010 lines
47 KiB
C
2010 lines
47 KiB
C
/*
|
|
* 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 <errno.h>
|
|
#include <inttypes.h>
|
|
#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 "block-range.h"
|
|
#include "string2.h"
|
|
#include "arch/common.h"
|
|
#include <regex.h>
|
|
#include <pthread.h>
|
|
#include <linux/bitops.h>
|
|
#include <linux/kernel.h>
|
|
|
|
#include "sane_ctype.h"
|
|
|
|
const char *disassembler_style;
|
|
const char *objdump_path;
|
|
static regex_t file_lineno;
|
|
|
|
static struct ins_ops *ins__find(struct arch *arch, const char *name);
|
|
static void ins__sort(struct arch *arch);
|
|
static int disasm_line__parse(char *line, const char **namep, char **rawp);
|
|
|
|
struct arch {
|
|
const char *name;
|
|
struct ins *instructions;
|
|
size_t nr_instructions;
|
|
size_t nr_instructions_allocated;
|
|
struct ins_ops *(*associate_instruction_ops)(struct arch *arch, const char *name);
|
|
bool sorted_instructions;
|
|
bool initialized;
|
|
void *priv;
|
|
unsigned int model;
|
|
unsigned int family;
|
|
int (*init)(struct arch *arch, char *cpuid);
|
|
bool (*ins_is_fused)(struct arch *arch, const char *ins1,
|
|
const char *ins2);
|
|
struct {
|
|
char comment_char;
|
|
char skip_functions_char;
|
|
} objdump;
|
|
};
|
|
|
|
static struct ins_ops call_ops;
|
|
static struct ins_ops dec_ops;
|
|
static struct ins_ops jump_ops;
|
|
static struct ins_ops mov_ops;
|
|
static struct ins_ops nop_ops;
|
|
static struct ins_ops lock_ops;
|
|
static struct ins_ops ret_ops;
|
|
|
|
static int arch__grow_instructions(struct arch *arch)
|
|
{
|
|
struct ins *new_instructions;
|
|
size_t new_nr_allocated;
|
|
|
|
if (arch->nr_instructions_allocated == 0 && arch->instructions)
|
|
goto grow_from_non_allocated_table;
|
|
|
|
new_nr_allocated = arch->nr_instructions_allocated + 128;
|
|
new_instructions = realloc(arch->instructions, new_nr_allocated * sizeof(struct ins));
|
|
if (new_instructions == NULL)
|
|
return -1;
|
|
|
|
out_update_instructions:
|
|
arch->instructions = new_instructions;
|
|
arch->nr_instructions_allocated = new_nr_allocated;
|
|
return 0;
|
|
|
|
grow_from_non_allocated_table:
|
|
new_nr_allocated = arch->nr_instructions + 128;
|
|
new_instructions = calloc(new_nr_allocated, sizeof(struct ins));
|
|
if (new_instructions == NULL)
|
|
return -1;
|
|
|
|
memcpy(new_instructions, arch->instructions, arch->nr_instructions);
|
|
goto out_update_instructions;
|
|
}
|
|
|
|
static int arch__associate_ins_ops(struct arch* arch, const char *name, struct ins_ops *ops)
|
|
{
|
|
struct ins *ins;
|
|
|
|
if (arch->nr_instructions == arch->nr_instructions_allocated &&
|
|
arch__grow_instructions(arch))
|
|
return -1;
|
|
|
|
ins = &arch->instructions[arch->nr_instructions];
|
|
ins->name = strdup(name);
|
|
if (!ins->name)
|
|
return -1;
|
|
|
|
ins->ops = ops;
|
|
arch->nr_instructions++;
|
|
|
|
ins__sort(arch);
|
|
return 0;
|
|
}
|
|
|
|
#include "arch/arm/annotate/instructions.c"
|
|
#include "arch/arm64/annotate/instructions.c"
|
|
#include "arch/x86/annotate/instructions.c"
|
|
#include "arch/powerpc/annotate/instructions.c"
|
|
#include "arch/s390/annotate/instructions.c"
|
|
|
|
static struct arch architectures[] = {
|
|
{
|
|
.name = "arm",
|
|
.init = arm__annotate_init,
|
|
},
|
|
{
|
|
.name = "arm64",
|
|
.init = arm64__annotate_init,
|
|
},
|
|
{
|
|
.name = "x86",
|
|
.init = x86__annotate_init,
|
|
.instructions = x86__instructions,
|
|
.nr_instructions = ARRAY_SIZE(x86__instructions),
|
|
.ins_is_fused = x86__ins_is_fused,
|
|
.objdump = {
|
|
.comment_char = '#',
|
|
},
|
|
},
|
|
{
|
|
.name = "powerpc",
|
|
.init = powerpc__annotate_init,
|
|
},
|
|
{
|
|
.name = "s390",
|
|
.init = s390__annotate_init,
|
|
.objdump = {
|
|
.comment_char = '#',
|
|
},
|
|
},
|
|
};
|
|
|
|
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, "%-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);
|
|
}
|
|
|
|
bool ins__is_fused(struct arch *arch, const char *ins1, const char *ins2)
|
|
{
|
|
if (!arch || !arch->ins_is_fused)
|
|
return false;
|
|
|
|
return arch->ins_is_fused(arch, ins1, ins2);
|
|
}
|
|
|
|
static int call__parse(struct arch *arch, struct ins_operands *ops, struct map *map)
|
|
{
|
|
char *endptr, *tok, *name;
|
|
|
|
ops->target.addr = strtoull(ops->raw, &endptr, 16);
|
|
|
|
name = strchr(endptr, '<');
|
|
if (name == NULL)
|
|
goto indirect_call;
|
|
|
|
name++;
|
|
|
|
if (arch->objdump.skip_functions_char &&
|
|
strchr(name, arch->objdump.skip_functions_char))
|
|
return -1;
|
|
|
|
tok = strchr(name, '>');
|
|
if (tok == NULL)
|
|
return -1;
|
|
|
|
*tok = '\0';
|
|
ops->target.name = strdup(name);
|
|
*tok = '>';
|
|
|
|
return ops->target.name == NULL ? -1 : 0;
|
|
|
|
indirect_call:
|
|
tok = strchr(endptr, '*');
|
|
if (tok == NULL) {
|
|
struct symbol *sym = map__find_symbol(map, map->map_ip(map, ops->target.addr));
|
|
if (sym != NULL)
|
|
ops->target.name = strdup(sym->name);
|
|
else
|
|
ops->target.addr = 0;
|
|
return 0;
|
|
}
|
|
|
|
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, "%-6s %s", ins->name, ops->target.name);
|
|
|
|
if (ops->target.addr == 0)
|
|
return ins__raw_scnprintf(ins, bf, size, ops);
|
|
|
|
return scnprintf(bf, size, "%-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 arch *arch __maybe_unused, struct ins_operands *ops, struct map *map __maybe_unused)
|
|
{
|
|
const char *s = strchr(ops->raw, '+');
|
|
const char *c = strchr(ops->raw, ',');
|
|
|
|
/*
|
|
* skip over possible up to 2 operands to get to address, e.g.:
|
|
* tbnz w0, #26, ffff0000083cd190 <security_file_permission+0xd0>
|
|
*/
|
|
if (c++ != NULL) {
|
|
ops->target.addr = strtoull(c, NULL, 16);
|
|
if (!ops->target.addr) {
|
|
c = strchr(c, ',');
|
|
if (c++ != NULL)
|
|
ops->target.addr = strtoull(c, NULL, 16);
|
|
}
|
|
} else {
|
|
ops->target.addr = strtoull(ops->raw, NULL, 16);
|
|
}
|
|
|
|
if (s++ != NULL) {
|
|
ops->target.offset = strtoull(s, NULL, 16);
|
|
ops->target.offset_avail = true;
|
|
} else {
|
|
ops->target.offset_avail = false;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
|
|
struct ins_operands *ops)
|
|
{
|
|
const char *c = strchr(ops->raw, ',');
|
|
|
|
if (!ops->target.addr || ops->target.offset < 0)
|
|
return ins__raw_scnprintf(ins, bf, size, ops);
|
|
|
|
if (c != NULL) {
|
|
const char *c2 = strchr(c + 1, ',');
|
|
|
|
/* check for 3-op insn */
|
|
if (c2 != NULL)
|
|
c = c2;
|
|
c++;
|
|
|
|
/* mirror arch objdump's space-after-comma style */
|
|
if (*c == ' ')
|
|
c++;
|
|
}
|
|
|
|
return scnprintf(bf, size, "%-6s %.*s%" PRIx64,
|
|
ins->name, c ? c - ops->raw : 0, ops->raw,
|
|
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);
|
|
if (endptr == comment)
|
|
return 0;
|
|
name = strchr(endptr, '<');
|
|
if (name == NULL)
|
|
return -1;
|
|
|
|
name++;
|
|
|
|
t = strchr(name, '>');
|
|
if (t == NULL)
|
|
return 0;
|
|
|
|
*t = '\0';
|
|
*namep = strdup(name);
|
|
*t = '>';
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map *map)
|
|
{
|
|
ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
|
|
if (ops->locked.ops == NULL)
|
|
return 0;
|
|
|
|
if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0)
|
|
goto out_free_ops;
|
|
|
|
ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name);
|
|
|
|
if (ops->locked.ins.ops == NULL)
|
|
goto out_free_ops;
|
|
|
|
if (ops->locked.ins.ops->parse &&
|
|
ops->locked.ins.ops->parse(arch, ops->locked.ops, map) < 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.ops == NULL)
|
|
return ins__raw_scnprintf(ins, bf, size, ops);
|
|
|
|
printed = scnprintf(bf, size, "%-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->ops && 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 arch *arch, struct ins_operands *ops, struct map *map __maybe_unused)
|
|
{
|
|
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, arch->objdump.comment_char);
|
|
|
|
if (comment != NULL)
|
|
s = comment - 1;
|
|
else
|
|
s = strchr(s, '\0') - 1;
|
|
|
|
while (s > target && isspace(s[0]))
|
|
--s;
|
|
s++;
|
|
prev = *s;
|
|
*s = '\0';
|
|
|
|
ops->target.raw = strdup(target);
|
|
*s = prev;
|
|
|
|
if (ops->target.raw == NULL)
|
|
goto out_free_source;
|
|
|
|
if (comment == NULL)
|
|
return 0;
|
|
|
|
comment = ltrim(comment);
|
|
comment__symbol(ops->source.raw, comment + 1, &ops->source.addr, &ops->source.name);
|
|
comment__symbol(ops->target.raw, comment + 1, &ops->target.addr, &ops->target.name);
|
|
|
|
return 0;
|
|
|
|
out_free_source:
|
|
zfree(&ops->source.raw);
|
|
return -1;
|
|
}
|
|
|
|
static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
|
|
struct ins_operands *ops)
|
|
{
|
|
return scnprintf(bf, size, "%-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 arch *arch __maybe_unused, struct ins_operands *ops, struct map *map __maybe_unused)
|
|
{
|
|
char *target, *comment, *s, prev;
|
|
|
|
target = s = ops->raw;
|
|
|
|
while (s[0] != '\0' && !isspace(s[0]))
|
|
++s;
|
|
prev = *s;
|
|
*s = '\0';
|
|
|
|
ops->target.raw = strdup(target);
|
|
*s = prev;
|
|
|
|
if (ops->target.raw == NULL)
|
|
return -1;
|
|
|
|
comment = strchr(s, arch->objdump.comment_char);
|
|
if (comment == NULL)
|
|
return 0;
|
|
|
|
comment = ltrim(comment);
|
|
comment__symbol(ops->target.raw, comment + 1, &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, "%-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, "%-6s", "nop");
|
|
}
|
|
|
|
static struct ins_ops nop_ops = {
|
|
.scnprintf = nop__scnprintf,
|
|
};
|
|
|
|
static struct ins_ops ret_ops = {
|
|
.scnprintf = ins__raw_scnprintf,
|
|
};
|
|
|
|
bool ins__is_ret(const struct ins *ins)
|
|
{
|
|
return ins->ops == &ret_ops;
|
|
}
|
|
|
|
bool ins__is_lock(const struct ins *ins)
|
|
{
|
|
return ins->ops == &lock_ops;
|
|
}
|
|
|
|
static int ins__key_cmp(const void *name, const void *insp)
|
|
{
|
|
const struct ins *ins = insp;
|
|
|
|
return strcmp(name, ins->name);
|
|
}
|
|
|
|
static int ins__cmp(const void *a, const void *b)
|
|
{
|
|
const struct ins *ia = a;
|
|
const struct ins *ib = b;
|
|
|
|
return strcmp(ia->name, ib->name);
|
|
}
|
|
|
|
static void ins__sort(struct arch *arch)
|
|
{
|
|
const int nmemb = arch->nr_instructions;
|
|
|
|
qsort(arch->instructions, nmemb, sizeof(struct ins), ins__cmp);
|
|
}
|
|
|
|
static struct ins_ops *__ins__find(struct arch *arch, const char *name)
|
|
{
|
|
struct ins *ins;
|
|
const int nmemb = arch->nr_instructions;
|
|
|
|
if (!arch->sorted_instructions) {
|
|
ins__sort(arch);
|
|
arch->sorted_instructions = true;
|
|
}
|
|
|
|
ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp);
|
|
return ins ? ins->ops : NULL;
|
|
}
|
|
|
|
static struct ins_ops *ins__find(struct arch *arch, const char *name)
|
|
{
|
|
struct ins_ops *ops = __ins__find(arch, name);
|
|
|
|
if (!ops && arch->associate_instruction_ops)
|
|
ops = arch->associate_instruction_ops(arch, name);
|
|
|
|
return ops;
|
|
}
|
|
|
|
static int arch__key_cmp(const void *name, const void *archp)
|
|
{
|
|
const struct arch *arch = archp;
|
|
|
|
return strcmp(name, arch->name);
|
|
}
|
|
|
|
static int arch__cmp(const void *a, const void *b)
|
|
{
|
|
const struct arch *aa = a;
|
|
const struct arch *ab = b;
|
|
|
|
return strcmp(aa->name, ab->name);
|
|
}
|
|
|
|
static void arch__sort(void)
|
|
{
|
|
const int nmemb = ARRAY_SIZE(architectures);
|
|
|
|
qsort(architectures, nmemb, sizeof(struct arch), arch__cmp);
|
|
}
|
|
|
|
static struct arch *arch__find(const char *name)
|
|
{
|
|
const int nmemb = ARRAY_SIZE(architectures);
|
|
static bool sorted;
|
|
|
|
if (!sorted) {
|
|
arch__sort();
|
|
sorted = true;
|
|
}
|
|
|
|
return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp);
|
|
}
|
|
|
|
int symbol__alloc_hist(struct symbol *sym)
|
|
{
|
|
struct annotation *notes = symbol__annotation(sym);
|
|
size_t size = symbol__size(sym);
|
|
size_t sizeof_sym_hist;
|
|
|
|
/*
|
|
* Add buffer of one element for zero length symbol.
|
|
* When sample is taken from first instruction of
|
|
* zero length symbol, perf still resolves it and
|
|
* shows symbol name in perf report and allows to
|
|
* annotate it.
|
|
*/
|
|
if (size == 0)
|
|
size = 1;
|
|
|
|
/* Check for overflow when calculating sizeof_sym_hist */
|
|
if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(struct sym_hist_entry))
|
|
return -1;
|
|
|
|
sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(struct sym_hist_entry));
|
|
|
|
/* 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(¬es->src->source);
|
|
return 0;
|
|
}
|
|
|
|
/* The cycles histogram is lazily allocated. */
|
|
static int symbol__alloc_hist_cycles(struct symbol *sym)
|
|
{
|
|
struct annotation *notes = symbol__annotation(sym);
|
|
const size_t size = symbol__size(sym);
|
|
|
|
notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist));
|
|
if (notes->src->cycles_hist == NULL)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
void symbol__annotate_zero_histograms(struct symbol *sym)
|
|
{
|
|
struct annotation *notes = symbol__annotation(sym);
|
|
|
|
pthread_mutex_lock(¬es->lock);
|
|
if (notes->src != NULL) {
|
|
memset(notes->src->histograms, 0,
|
|
notes->src->nr_histograms * notes->src->sizeof_sym_hist);
|
|
if (notes->src->cycles_hist)
|
|
memset(notes->src->cycles_hist, 0,
|
|
symbol__size(sym) * sizeof(struct cyc_hist));
|
|
}
|
|
pthread_mutex_unlock(¬es->lock);
|
|
}
|
|
|
|
static int __symbol__account_cycles(struct annotation *notes,
|
|
u64 start,
|
|
unsigned offset, unsigned cycles,
|
|
unsigned have_start)
|
|
{
|
|
struct cyc_hist *ch;
|
|
|
|
ch = notes->src->cycles_hist;
|
|
/*
|
|
* For now we can only account one basic block per
|
|
* final jump. But multiple could be overlapping.
|
|
* Always account the longest one. So when
|
|
* a shorter one has been already seen throw it away.
|
|
*
|
|
* We separately always account the full cycles.
|
|
*/
|
|
ch[offset].num_aggr++;
|
|
ch[offset].cycles_aggr += cycles;
|
|
|
|
if (!have_start && ch[offset].have_start)
|
|
return 0;
|
|
if (ch[offset].num) {
|
|
if (have_start && (!ch[offset].have_start ||
|
|
ch[offset].start > start)) {
|
|
ch[offset].have_start = 0;
|
|
ch[offset].cycles = 0;
|
|
ch[offset].num = 0;
|
|
if (ch[offset].reset < 0xffff)
|
|
ch[offset].reset++;
|
|
} else if (have_start &&
|
|
ch[offset].start < start)
|
|
return 0;
|
|
}
|
|
ch[offset].have_start = have_start;
|
|
ch[offset].start = start;
|
|
ch[offset].cycles += cycles;
|
|
ch[offset].num++;
|
|
return 0;
|
|
}
|
|
|
|
static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map,
|
|
struct annotation *notes, int evidx, u64 addr,
|
|
struct perf_sample *sample)
|
|
{
|
|
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) &&
|
|
(addr != sym->end || sym->start != sym->end)) {
|
|
pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n",
|
|
__func__, __LINE__, sym->name, sym->start, addr, sym->end);
|
|
return -ERANGE;
|
|
}
|
|
|
|
offset = addr - sym->start;
|
|
h = annotation__histogram(notes, evidx);
|
|
h->nr_samples++;
|
|
h->addr[offset].nr_samples++;
|
|
h->period += sample->period;
|
|
h->addr[offset].period += sample->period;
|
|
|
|
pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
|
|
", evidx=%d] => nr_samples: %" PRIu64 ", period: %" PRIu64 "\n",
|
|
sym->start, sym->name, addr, addr - sym->start, evidx,
|
|
h->addr[offset].nr_samples, h->addr[offset].period);
|
|
return 0;
|
|
}
|
|
|
|
static struct annotation *symbol__get_annotation(struct symbol *sym, bool cycles)
|
|
{
|
|
struct annotation *notes = symbol__annotation(sym);
|
|
|
|
if (notes->src == NULL) {
|
|
if (symbol__alloc_hist(sym) < 0)
|
|
return NULL;
|
|
}
|
|
if (!notes->src->cycles_hist && cycles) {
|
|
if (symbol__alloc_hist_cycles(sym) < 0)
|
|
return NULL;
|
|
}
|
|
return notes;
|
|
}
|
|
|
|
static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
|
|
int evidx, u64 addr,
|
|
struct perf_sample *sample)
|
|
{
|
|
struct annotation *notes;
|
|
|
|
if (sym == NULL)
|
|
return 0;
|
|
notes = symbol__get_annotation(sym, false);
|
|
if (notes == NULL)
|
|
return -ENOMEM;
|
|
return __symbol__inc_addr_samples(sym, map, notes, evidx, addr, sample);
|
|
}
|
|
|
|
static int symbol__account_cycles(u64 addr, u64 start,
|
|
struct symbol *sym, unsigned cycles)
|
|
{
|
|
struct annotation *notes;
|
|
unsigned offset;
|
|
|
|
if (sym == NULL)
|
|
return 0;
|
|
notes = symbol__get_annotation(sym, true);
|
|
if (notes == NULL)
|
|
return -ENOMEM;
|
|
if (addr < sym->start || addr >= sym->end)
|
|
return -ERANGE;
|
|
|
|
if (start) {
|
|
if (start < sym->start || start >= sym->end)
|
|
return -ERANGE;
|
|
if (start >= addr)
|
|
start = 0;
|
|
}
|
|
offset = addr - sym->start;
|
|
return __symbol__account_cycles(notes,
|
|
start ? start - sym->start : 0,
|
|
offset, cycles,
|
|
!!start);
|
|
}
|
|
|
|
int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
|
|
struct addr_map_symbol *start,
|
|
unsigned cycles)
|
|
{
|
|
u64 saddr = 0;
|
|
int err;
|
|
|
|
if (!cycles)
|
|
return 0;
|
|
|
|
/*
|
|
* Only set start when IPC can be computed. We can only
|
|
* compute it when the basic block is completely in a single
|
|
* function.
|
|
* Special case the case when the jump is elsewhere, but
|
|
* it starts on the function start.
|
|
*/
|
|
if (start &&
|
|
(start->sym == ams->sym ||
|
|
(ams->sym &&
|
|
start->addr == ams->sym->start + ams->map->start)))
|
|
saddr = start->al_addr;
|
|
if (saddr == 0)
|
|
pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n",
|
|
ams->addr,
|
|
start ? start->addr : 0,
|
|
ams->sym ? ams->sym->start + ams->map->start : 0,
|
|
saddr);
|
|
err = symbol__account_cycles(ams->al_addr, saddr, ams->sym, cycles);
|
|
if (err)
|
|
pr_debug2("account_cycles failed %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, struct perf_sample *sample,
|
|
int evidx)
|
|
{
|
|
return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr, sample);
|
|
}
|
|
|
|
int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample,
|
|
int evidx, u64 ip)
|
|
{
|
|
return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip, sample);
|
|
}
|
|
|
|
static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map *map)
|
|
{
|
|
dl->ins.ops = ins__find(arch, dl->ins.name);
|
|
|
|
if (!dl->ins.ops)
|
|
return;
|
|
|
|
if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, map) < 0)
|
|
dl->ins.ops = NULL;
|
|
}
|
|
|
|
static int disasm_line__parse(char *line, const char **namep, char **rawp)
|
|
{
|
|
char tmp, *name = ltrim(line);
|
|
|
|
if (name[0] == '\0')
|
|
return -1;
|
|
|
|
*rawp = name + 1;
|
|
|
|
while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
|
|
++*rawp;
|
|
|
|
tmp = (*rawp)[0];
|
|
(*rawp)[0] = '\0';
|
|
*namep = strdup(name);
|
|
|
|
if (*namep == NULL)
|
|
goto out_free_name;
|
|
|
|
(*rawp)[0] = tmp;
|
|
*rawp = ltrim(*rawp);
|
|
|
|
return 0;
|
|
|
|
out_free_name:
|
|
free((void *)namep);
|
|
*namep = NULL;
|
|
return -1;
|
|
}
|
|
|
|
struct annotate_args {
|
|
size_t privsize;
|
|
struct arch *arch;
|
|
struct map *map;
|
|
struct perf_evsel *evsel;
|
|
s64 offset;
|
|
char *line;
|
|
int line_nr;
|
|
};
|
|
|
|
static void annotation_line__delete(struct annotation_line *al)
|
|
{
|
|
void *ptr = (void *) al - al->privsize;
|
|
|
|
free_srcline(al->path);
|
|
zfree(&al->line);
|
|
free(ptr);
|
|
}
|
|
|
|
/*
|
|
* Allocating the annotation line data with following
|
|
* structure:
|
|
*
|
|
* --------------------------------------
|
|
* private space | struct annotation_line
|
|
* --------------------------------------
|
|
*
|
|
* Size of the private space is stored in 'struct annotation_line'.
|
|
*
|
|
*/
|
|
static struct annotation_line *
|
|
annotation_line__new(struct annotate_args *args, size_t privsize)
|
|
{
|
|
struct annotation_line *al;
|
|
struct perf_evsel *evsel = args->evsel;
|
|
size_t size = privsize + sizeof(*al);
|
|
int nr = 1;
|
|
|
|
if (perf_evsel__is_group_event(evsel))
|
|
nr = evsel->nr_members;
|
|
|
|
size += sizeof(al->samples[0]) * nr;
|
|
|
|
al = zalloc(size);
|
|
if (al) {
|
|
al = (void *) al + privsize;
|
|
al->privsize = privsize;
|
|
al->offset = args->offset;
|
|
al->line = strdup(args->line);
|
|
al->line_nr = args->line_nr;
|
|
al->samples_nr = nr;
|
|
}
|
|
|
|
return al;
|
|
}
|
|
|
|
/*
|
|
* Allocating the disasm annotation line data with
|
|
* following structure:
|
|
*
|
|
* ------------------------------------------------------------
|
|
* privsize space | struct disasm_line | struct annotation_line
|
|
* ------------------------------------------------------------
|
|
*
|
|
* We have 'struct annotation_line' member as last member
|
|
* of 'struct disasm_line' to have an easy access.
|
|
*
|
|
*/
|
|
static struct disasm_line *disasm_line__new(struct annotate_args *args)
|
|
{
|
|
struct disasm_line *dl = NULL;
|
|
struct annotation_line *al;
|
|
size_t privsize = args->privsize + offsetof(struct disasm_line, al);
|
|
|
|
al = annotation_line__new(args, privsize);
|
|
if (al != NULL) {
|
|
dl = disasm_line(al);
|
|
|
|
if (dl->al.line == NULL)
|
|
goto out_delete;
|
|
|
|
if (args->offset != -1) {
|
|
if (disasm_line__parse(dl->al.line, &dl->ins.name, &dl->ops.raw) < 0)
|
|
goto out_free_line;
|
|
|
|
disasm_line__init_ins(dl, args->arch, args->map);
|
|
}
|
|
}
|
|
|
|
return dl;
|
|
|
|
out_free_line:
|
|
zfree(&dl->al.line);
|
|
out_delete:
|
|
free(dl);
|
|
return NULL;
|
|
}
|
|
|
|
void disasm_line__free(struct disasm_line *dl)
|
|
{
|
|
if (dl->ins.ops && dl->ins.ops->free)
|
|
dl->ins.ops->free(&dl->ops);
|
|
else
|
|
ins__delete(&dl->ops);
|
|
free((void *)dl->ins.name);
|
|
dl->ins.name = NULL;
|
|
annotation_line__delete(&dl->al);
|
|
}
|
|
|
|
int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
|
|
{
|
|
if (raw || !dl->ins.ops)
|
|
return scnprintf(bf, size, "%-6s %s", dl->ins.name, dl->ops.raw);
|
|
|
|
return ins__scnprintf(&dl->ins, bf, size, &dl->ops);
|
|
}
|
|
|
|
static void annotation_line__add(struct annotation_line *al, struct list_head *head)
|
|
{
|
|
list_add_tail(&al->node, head);
|
|
}
|
|
|
|
struct annotation_line *
|
|
annotation_line__next(struct annotation_line *pos, struct list_head *head)
|
|
{
|
|
list_for_each_entry_continue(pos, head, node)
|
|
if (pos->offset >= 0)
|
|
return pos;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const char *annotate__address_color(struct block_range *br)
|
|
{
|
|
double cov = block_range__coverage(br);
|
|
|
|
if (cov >= 0) {
|
|
/* mark red for >75% coverage */
|
|
if (cov > 0.75)
|
|
return PERF_COLOR_RED;
|
|
|
|
/* mark dull for <1% coverage */
|
|
if (cov < 0.01)
|
|
return PERF_COLOR_NORMAL;
|
|
}
|
|
|
|
return PERF_COLOR_MAGENTA;
|
|
}
|
|
|
|
static const char *annotate__asm_color(struct block_range *br)
|
|
{
|
|
double cov = block_range__coverage(br);
|
|
|
|
if (cov >= 0) {
|
|
/* mark dull for <1% coverage */
|
|
if (cov < 0.01)
|
|
return PERF_COLOR_NORMAL;
|
|
}
|
|
|
|
return PERF_COLOR_BLUE;
|
|
}
|
|
|
|
static void annotate__branch_printf(struct block_range *br, u64 addr)
|
|
{
|
|
bool emit_comment = true;
|
|
|
|
if (!br)
|
|
return;
|
|
|
|
#if 1
|
|
if (br->is_target && br->start == addr) {
|
|
struct block_range *branch = br;
|
|
double p;
|
|
|
|
/*
|
|
* Find matching branch to our target.
|
|
*/
|
|
while (!branch->is_branch)
|
|
branch = block_range__next(branch);
|
|
|
|
p = 100 *(double)br->entry / branch->coverage;
|
|
|
|
if (p > 0.1) {
|
|
if (emit_comment) {
|
|
emit_comment = false;
|
|
printf("\t#");
|
|
}
|
|
|
|
/*
|
|
* The percentage of coverage joined at this target in relation
|
|
* to the next branch.
|
|
*/
|
|
printf(" +%.2f%%", p);
|
|
}
|
|
}
|
|
#endif
|
|
if (br->is_branch && br->end == addr) {
|
|
double p = 100*(double)br->taken / br->coverage;
|
|
|
|
if (p > 0.1) {
|
|
if (emit_comment) {
|
|
emit_comment = false;
|
|
printf("\t#");
|
|
}
|
|
|
|
/*
|
|
* The percentage of coverage leaving at this branch, and
|
|
* its prediction ratio.
|
|
*/
|
|
printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred / br->taken);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int disasm_line__print(struct disasm_line *dl, u64 start, int addr_fmt_width)
|
|
{
|
|
s64 offset = dl->al.offset;
|
|
const u64 addr = start + offset;
|
|
struct block_range *br;
|
|
|
|
br = block_range__find(addr);
|
|
color_fprintf(stdout, annotate__address_color(br), " %*" PRIx64 ":", addr_fmt_width, addr);
|
|
color_fprintf(stdout, annotate__asm_color(br), "%s", dl->al.line);
|
|
annotate__branch_printf(br, addr);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
annotation_line__print(struct annotation_line *al, struct symbol *sym, u64 start,
|
|
struct perf_evsel *evsel, u64 len, int min_pcnt, int printed,
|
|
int max_lines, struct annotation_line *queue, int addr_fmt_width)
|
|
{
|
|
struct disasm_line *dl = container_of(al, struct disasm_line, al);
|
|
static const char *prev_line;
|
|
static const char *prev_color;
|
|
|
|
if (al->offset != -1) {
|
|
double max_percent = 0.0;
|
|
int i, nr_percent = 1;
|
|
const char *color;
|
|
struct annotation *notes = symbol__annotation(sym);
|
|
|
|
for (i = 0; i < al->samples_nr; i++) {
|
|
struct annotation_data *sample = &al->samples[i];
|
|
|
|
if (sample->percent > max_percent)
|
|
max_percent = sample->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 == al)
|
|
break;
|
|
annotation_line__print(queue, sym, start, evsel, len,
|
|
0, 0, 1, NULL, addr_fmt_width);
|
|
}
|
|
}
|
|
|
|
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 (al->path) {
|
|
if (!prev_line || strcmp(prev_line, al->path)
|
|
|| color != prev_color) {
|
|
color_fprintf(stdout, color, " %s", al->path);
|
|
prev_line = al->path;
|
|
prev_color = color;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < nr_percent; i++) {
|
|
struct annotation_data *sample = &al->samples[i];
|
|
|
|
color = get_percent_color(sample->percent);
|
|
|
|
if (symbol_conf.show_total_period)
|
|
color_fprintf(stdout, color, " %11" PRIu64,
|
|
sample->he.period);
|
|
else if (symbol_conf.show_nr_samples)
|
|
color_fprintf(stdout, color, " %7" PRIu64,
|
|
sample->he.nr_samples);
|
|
else
|
|
color_fprintf(stdout, color, " %7.2f", sample->percent);
|
|
}
|
|
|
|
printf(" : ");
|
|
|
|
disasm_line__print(dl, start, addr_fmt_width);
|
|
printf("\n");
|
|
} else if (max_lines && printed >= max_lines)
|
|
return 1;
|
|
else {
|
|
int width = symbol_conf.show_total_period ? 12 : 8;
|
|
|
|
if (queue)
|
|
return -1;
|
|
|
|
if (perf_evsel__is_group_event(evsel))
|
|
width *= evsel->nr_members;
|
|
|
|
if (!*al->line)
|
|
printf(" %*s:\n", width, " ");
|
|
else
|
|
printf(" %*s: %*s %s\n", width, " ", addr_fmt_width, " ", al->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, FILE *file,
|
|
struct annotate_args *args,
|
|
int *line_nr)
|
|
{
|
|
struct map *map = args->map;
|
|
struct annotation *notes = symbol__annotation(sym);
|
|
struct disasm_line *dl;
|
|
char *line = NULL, *parsed_line, *tmp, *tmp2;
|
|
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;
|
|
|
|
line_ip = -1;
|
|
parsed_line = rtrim(line);
|
|
|
|
/* /filename:linenr ? Save line number and ignore. */
|
|
if (regexec(&file_lineno, parsed_line, 2, match, 0) == 0) {
|
|
*line_nr = atoi(parsed_line + match[1].rm_so);
|
|
return 0;
|
|
}
|
|
|
|
tmp = ltrim(parsed_line);
|
|
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;
|
|
}
|
|
|
|
args->offset = offset;
|
|
args->line = parsed_line;
|
|
args->line_nr = *line_nr;
|
|
|
|
dl = disasm_line__new(args);
|
|
free(line);
|
|
(*line_nr)++;
|
|
|
|
if (dl == NULL)
|
|
return -1;
|
|
|
|
if (!disasm_line__has_offset(dl)) {
|
|
dl->ops.target.offset = dl->ops.target.addr -
|
|
map__rip_2objdump(map, sym->start);
|
|
dl->ops.target.offset_avail = true;
|
|
}
|
|
|
|
/* kcore has no symbols, so add the call target name */
|
|
if (dl->ins.ops && 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) &&
|
|
target.sym->start == target.al_addr)
|
|
dl->ops.target.name = strdup(target.sym->name);
|
|
}
|
|
|
|
annotation_line__add(&dl->al, ¬es->src->source);
|
|
|
|
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 = ¬es->src->source;
|
|
struct disasm_line *dl;
|
|
|
|
while (!list_empty(list)) {
|
|
dl = list_entry(list->prev, struct disasm_line, al.node);
|
|
|
|
if (dl->ins.ops) {
|
|
if (dl->ins.ops != &nop_ops)
|
|
return;
|
|
} else {
|
|
if (!strstr(dl->al.line, " nop ") &&
|
|
!strstr(dl->al.line, " nopl ") &&
|
|
!strstr(dl->al.line, " nopw "))
|
|
return;
|
|
}
|
|
|
|
list_del(&dl->al.node);
|
|
disasm_line__free(dl);
|
|
}
|
|
}
|
|
|
|
int symbol__strerror_disassemble(struct symbol *sym __maybe_unused, struct map *map,
|
|
int errnum, char *buf, size_t buflen)
|
|
{
|
|
struct dso *dso = map->dso;
|
|
|
|
BUG_ON(buflen == 0);
|
|
|
|
if (errnum >= 0) {
|
|
str_error_r(errnum, buf, buflen);
|
|
return 0;
|
|
}
|
|
|
|
switch (errnum) {
|
|
case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: {
|
|
char bf[SBUILD_ID_SIZE + 15] = " with build id ";
|
|
char *build_id_msg = NULL;
|
|
|
|
if (dso->has_build_id) {
|
|
build_id__sprintf(dso->build_id,
|
|
sizeof(dso->build_id), bf + 15);
|
|
build_id_msg = bf;
|
|
}
|
|
scnprintf(buf, buflen,
|
|
"No vmlinux file%s\nwas found in the path.\n\n"
|
|
"Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
|
|
"Please use:\n\n"
|
|
" perf buildid-cache -vu vmlinux\n\n"
|
|
"or:\n\n"
|
|
" --vmlinux vmlinux\n", build_id_msg ?: "");
|
|
}
|
|
break;
|
|
default:
|
|
scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size)
|
|
{
|
|
char linkname[PATH_MAX];
|
|
char *build_id_filename;
|
|
char *build_id_path = NULL;
|
|
char *pos;
|
|
|
|
if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
|
|
!dso__is_kcore(dso))
|
|
return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX;
|
|
|
|
build_id_filename = dso__build_id_filename(dso, NULL, 0, false);
|
|
if (build_id_filename) {
|
|
__symbol__join_symfs(filename, filename_size, build_id_filename);
|
|
free(build_id_filename);
|
|
} else {
|
|
if (dso->has_build_id)
|
|
return ENOMEM;
|
|
goto fallback;
|
|
}
|
|
|
|
build_id_path = strdup(filename);
|
|
if (!build_id_path)
|
|
return -1;
|
|
|
|
/*
|
|
* old style build-id cache has name of XX/XXXXXXX.. while
|
|
* new style has XX/XXXXXXX../{elf,kallsyms,vdso}.
|
|
* extract the build-id part of dirname in the new style only.
|
|
*/
|
|
pos = strrchr(build_id_path, '/');
|
|
if (pos && strlen(pos) < SBUILD_ID_SIZE - 2)
|
|
dirname(build_id_path);
|
|
|
|
if (dso__is_kcore(dso) ||
|
|
readlink(build_id_path, linkname, sizeof(linkname)) < 0 ||
|
|
strstr(linkname, DSO__NAME_KALLSYMS) ||
|
|
access(filename, R_OK)) {
|
|
fallback:
|
|
/*
|
|
* If we don't have build-ids or the build-id file isn't in the
|
|
* cache, or is just a kallsyms file, well, lets hope that this
|
|
* DSO is the same as when 'perf record' ran.
|
|
*/
|
|
__symbol__join_symfs(filename, filename_size, dso->long_name);
|
|
}
|
|
|
|
free(build_id_path);
|
|
return 0;
|
|
}
|
|
|
|
static int symbol__disassemble(struct symbol *sym, struct annotate_args *args)
|
|
{
|
|
struct map *map = args->map;
|
|
struct dso *dso = map->dso;
|
|
char command[PATH_MAX * 2];
|
|
FILE *file;
|
|
char symfs_filename[PATH_MAX];
|
|
struct kcore_extract kce;
|
|
bool delete_extract = false;
|
|
int stdout_fd[2];
|
|
int lineno = 0;
|
|
int nline;
|
|
pid_t pid;
|
|
int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename));
|
|
|
|
if (err)
|
|
return err;
|
|
|
|
pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
|
|
symfs_filename, sym->name, map->unmap_ip(map, sym->start),
|
|
map->unmap_ip(map, sym->end));
|
|
|
|
pr_debug("annotating [%p] %30s : [%p] %30s\n",
|
|
dso, dso->long_name, 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));
|
|
}
|
|
} else if (dso__needs_decompress(dso)) {
|
|
char tmp[KMOD_DECOMP_LEN];
|
|
|
|
if (dso__decompress_kmodule_path(dso, symfs_filename,
|
|
tmp, sizeof(tmp)) < 0)
|
|
goto out;
|
|
|
|
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, symfs_filename);
|
|
|
|
pr_debug("Executing: %s\n", command);
|
|
|
|
err = -1;
|
|
if (pipe(stdout_fd) < 0) {
|
|
pr_err("Failure creating the pipe to run %s\n", command);
|
|
goto out_remove_tmp;
|
|
}
|
|
|
|
pid = fork();
|
|
if (pid < 0) {
|
|
pr_err("Failure forking to run %s\n", command);
|
|
goto out_close_stdout;
|
|
}
|
|
|
|
if (pid == 0) {
|
|
close(stdout_fd[0]);
|
|
dup2(stdout_fd[1], 1);
|
|
close(stdout_fd[1]);
|
|
execl("/bin/sh", "sh", "-c", command, NULL);
|
|
perror(command);
|
|
exit(-1);
|
|
}
|
|
|
|
close(stdout_fd[1]);
|
|
|
|
file = fdopen(stdout_fd[0], "r");
|
|
if (!file) {
|
|
pr_err("Failure creating FILE stream for %s\n", command);
|
|
/*
|
|
* If we were using debug info should retry with
|
|
* original binary.
|
|
*/
|
|
goto out_remove_tmp;
|
|
}
|
|
|
|
nline = 0;
|
|
while (!feof(file)) {
|
|
/*
|
|
* The source code line number (lineno) needs to be kept in
|
|
* accross calls to symbol__parse_objdump_line(), so that it
|
|
* can associate it with the instructions till the next one.
|
|
* See disasm_line__new() and struct disasm_line::line_nr.
|
|
*/
|
|
if (symbol__parse_objdump_line(sym, file, args, &lineno) < 0)
|
|
break;
|
|
nline++;
|
|
}
|
|
|
|
if (nline == 0)
|
|
pr_err("No output from %s\n", command);
|
|
|
|
/*
|
|
* kallsyms does not have symbol sizes so there may a nop at the end.
|
|
* Remove it.
|
|
*/
|
|
if (dso__is_kcore(dso))
|
|
delete_last_nop(sym);
|
|
|
|
fclose(file);
|
|
err = 0;
|
|
out_remove_tmp:
|
|
close(stdout_fd[0]);
|
|
|
|
if (dso__needs_decompress(dso))
|
|
unlink(symfs_filename);
|
|
|
|
if (delete_extract)
|
|
kcore_extract__delete(&kce);
|
|
out:
|
|
return err;
|
|
|
|
out_close_stdout:
|
|
close(stdout_fd[1]);
|
|
goto out_remove_tmp;
|
|
}
|
|
|
|
static void calc_percent(struct sym_hist *hist,
|
|
struct annotation_data *sample,
|
|
s64 offset, s64 end)
|
|
{
|
|
unsigned int hits = 0;
|
|
u64 period = 0;
|
|
|
|
while (offset < end) {
|
|
hits += hist->addr[offset].nr_samples;
|
|
period += hist->addr[offset].period;
|
|
++offset;
|
|
}
|
|
|
|
if (hist->nr_samples) {
|
|
sample->he.period = period;
|
|
sample->he.nr_samples = hits;
|
|
sample->percent = 100.0 * hits / hist->nr_samples;
|
|
}
|
|
}
|
|
|
|
static void annotation__calc_percent(struct annotation *notes,
|
|
struct perf_evsel *evsel, s64 len)
|
|
{
|
|
struct annotation_line *al, *next;
|
|
|
|
list_for_each_entry(al, ¬es->src->source, node) {
|
|
s64 end;
|
|
int i;
|
|
|
|
if (al->offset == -1)
|
|
continue;
|
|
|
|
next = annotation_line__next(al, ¬es->src->source);
|
|
end = next ? next->offset : len;
|
|
|
|
for (i = 0; i < al->samples_nr; i++) {
|
|
struct annotation_data *sample;
|
|
struct sym_hist *hist;
|
|
|
|
hist = annotation__histogram(notes, evsel->idx + i);
|
|
sample = &al->samples[i];
|
|
|
|
calc_percent(hist, sample, al->offset, end);
|
|
}
|
|
}
|
|
}
|
|
|
|
void symbol__calc_percent(struct symbol *sym, struct perf_evsel *evsel)
|
|
{
|
|
struct annotation *notes = symbol__annotation(sym);
|
|
|
|
annotation__calc_percent(notes, evsel, symbol__size(sym));
|
|
}
|
|
|
|
int symbol__annotate(struct symbol *sym, struct map *map,
|
|
struct perf_evsel *evsel, size_t privsize,
|
|
struct arch **parch)
|
|
{
|
|
struct annotate_args args = {
|
|
.privsize = privsize,
|
|
.map = map,
|
|
.evsel = evsel,
|
|
};
|
|
struct perf_env *env = perf_evsel__env(evsel);
|
|
const char *arch_name = perf_env__arch(env);
|
|
struct arch *arch;
|
|
int err;
|
|
|
|
if (!arch_name)
|
|
return -1;
|
|
|
|
args.arch = arch = arch__find(arch_name);
|
|
if (arch == NULL)
|
|
return -ENOTSUP;
|
|
|
|
if (parch)
|
|
*parch = arch;
|
|
|
|
if (arch->init) {
|
|
err = arch->init(arch, env ? env->cpuid : NULL);
|
|
if (err) {
|
|
pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
return symbol__disassemble(sym, &args);
|
|
}
|
|
|
|
static void insert_source_line(struct rb_root *root, struct annotation_line *al)
|
|
{
|
|
struct annotation_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 annotation_line, rb_node);
|
|
|
|
ret = strcmp(iter->path, al->path);
|
|
if (ret == 0) {
|
|
for (i = 0; i < al->samples_nr; i++)
|
|
iter->samples[i].percent_sum += al->samples[i].percent;
|
|
return;
|
|
}
|
|
|
|
if (ret < 0)
|
|
p = &(*p)->rb_left;
|
|
else
|
|
p = &(*p)->rb_right;
|
|
}
|
|
|
|
for (i = 0; i < al->samples_nr; i++)
|
|
al->samples[i].percent_sum = al->samples[i].percent;
|
|
|
|
rb_link_node(&al->rb_node, parent, p);
|
|
rb_insert_color(&al->rb_node, root);
|
|
}
|
|
|
|
static int cmp_source_line(struct annotation_line *a, struct annotation_line *b)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < a->samples_nr; i++) {
|
|
if (a->samples[i].percent_sum == b->samples[i].percent_sum)
|
|
continue;
|
|
return a->samples[i].percent_sum > b->samples[i].percent_sum;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __resort_source_line(struct rb_root *root, struct annotation_line *al)
|
|
{
|
|
struct annotation_line *iter;
|
|
struct rb_node **p = &root->rb_node;
|
|
struct rb_node *parent = NULL;
|
|
|
|
while (*p != NULL) {
|
|
parent = *p;
|
|
iter = rb_entry(parent, struct annotation_line, rb_node);
|
|
|
|
if (cmp_source_line(al, iter))
|
|
p = &(*p)->rb_left;
|
|
else
|
|
p = &(*p)->rb_right;
|
|
}
|
|
|
|
rb_link_node(&al->rb_node, parent, p);
|
|
rb_insert_color(&al->rb_node, root);
|
|
}
|
|
|
|
static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
|
|
{
|
|
struct annotation_line *al;
|
|
struct rb_node *node;
|
|
|
|
node = rb_first(src_root);
|
|
while (node) {
|
|
struct rb_node *next;
|
|
|
|
al = rb_entry(node, struct annotation_line, rb_node);
|
|
next = rb_next(node);
|
|
rb_erase(node, src_root);
|
|
|
|
__resort_source_line(dest_root, al);
|
|
node = next;
|
|
}
|
|
}
|
|
|
|
static void print_summary(struct rb_root *root, const char *filename)
|
|
{
|
|
struct annotation_line *al;
|
|
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;
|
|
|
|
al = rb_entry(node, struct annotation_line, rb_node);
|
|
for (i = 0; i < al->samples_nr; i++) {
|
|
percent = al->samples[i].percent_sum;
|
|
color = get_percent_color(percent);
|
|
color_fprintf(stdout, color, " %7.2f", percent);
|
|
|
|
if (percent > percent_max)
|
|
percent_max = percent;
|
|
}
|
|
|
|
path = al->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].nr_samples != 0)
|
|
printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
|
|
sym->start + offset, h->addr[offset].nr_samples);
|
|
printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->nr_samples", h->nr_samples);
|
|
}
|
|
|
|
static int annotated_source__addr_fmt_width(struct list_head *lines, u64 start)
|
|
{
|
|
char bf[32];
|
|
struct annotation_line *line;
|
|
|
|
list_for_each_entry_reverse(line, lines, node) {
|
|
if (line->offset != -1)
|
|
return scnprintf(bf, sizeof(bf), "%" PRIx64, start + line->offset);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
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 sym_hist *h = annotation__histogram(notes, evsel->idx);
|
|
struct annotation_line *pos, *queue = NULL;
|
|
u64 start = map__rip_2objdump(map, sym->start);
|
|
int printed = 2, queue_len = 0, addr_fmt_width;
|
|
int more = 0;
|
|
u64 len;
|
|
int width = symbol_conf.show_total_period ? 12 : 8;
|
|
int 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);
|
|
|
|
if (perf_evsel__is_group_event(evsel))
|
|
width *= evsel->nr_members;
|
|
|
|
graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s (%" PRIu64 " samples)\n",
|
|
width, width, symbol_conf.show_total_period ? "Period" :
|
|
symbol_conf.show_nr_samples ? "Samples" : "Percent",
|
|
d_filename, evsel_name, h->nr_samples);
|
|
|
|
printf("%-*.*s----\n",
|
|
graph_dotted_len, graph_dotted_len, graph_dotted_line);
|
|
|
|
if (verbose > 0)
|
|
symbol__annotate_hits(sym, evsel);
|
|
|
|
addr_fmt_width = annotated_source__addr_fmt_width(¬es->src->source, start);
|
|
|
|
list_for_each_entry(pos, ¬es->src->source, node) {
|
|
int err;
|
|
|
|
if (context && queue == NULL) {
|
|
queue = pos;
|
|
queue_len = 0;
|
|
}
|
|
|
|
err = annotation_line__print(pos, sym, start, evsel, len,
|
|
min_pcnt, printed, max_lines,
|
|
queue, addr_fmt_width);
|
|
|
|
switch (err) {
|
|
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->nr_samples = 0;
|
|
for (offset = 0; offset < len; ++offset) {
|
|
h->addr[offset].nr_samples = h->addr[offset].nr_samples * 7 / 8;
|
|
h->nr_samples += h->addr[offset].nr_samples;
|
|
}
|
|
}
|
|
|
|
void annotated_source__purge(struct annotated_source *as)
|
|
{
|
|
struct annotation_line *al, *n;
|
|
|
|
list_for_each_entry_safe(al, n, &as->source, node) {
|
|
list_del(&al->node);
|
|
disasm_line__free(disasm_line(al));
|
|
}
|
|
}
|
|
|
|
static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
|
|
{
|
|
size_t printed;
|
|
|
|
if (dl->al.offset == -1)
|
|
return fprintf(fp, "%s\n", dl->al.line);
|
|
|
|
printed = fprintf(fp, "%#" PRIx64 " %s", dl->al.offset, dl->ins.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, al.node)
|
|
printed += disasm_line__fprintf(pos, fp);
|
|
|
|
return printed;
|
|
}
|
|
|
|
static void annotation__calc_lines(struct annotation *notes, struct map *map,
|
|
struct rb_root *root, u64 start)
|
|
{
|
|
struct annotation_line *al;
|
|
struct rb_root tmp_root = RB_ROOT;
|
|
|
|
list_for_each_entry(al, ¬es->src->source, node) {
|
|
double percent_max = 0.0;
|
|
int i;
|
|
|
|
for (i = 0; i < al->samples_nr; i++) {
|
|
struct annotation_data *sample;
|
|
|
|
sample = &al->samples[i];
|
|
|
|
if (sample->percent > percent_max)
|
|
percent_max = sample->percent;
|
|
}
|
|
|
|
if (percent_max <= 0.5)
|
|
continue;
|
|
|
|
al->path = get_srcline(map->dso, start + al->offset, NULL,
|
|
false, true, start + al->offset);
|
|
insert_source_line(&tmp_root, al);
|
|
}
|
|
|
|
resort_source_line(root, &tmp_root);
|
|
}
|
|
|
|
static void symbol__calc_lines(struct symbol *sym, struct map *map,
|
|
struct rb_root *root)
|
|
{
|
|
struct annotation *notes = symbol__annotation(sym);
|
|
u64 start = map__rip_2objdump(map, sym->start);
|
|
|
|
annotation__calc_lines(notes, map, root, start);
|
|
}
|
|
|
|
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;
|
|
|
|
if (symbol__annotate(sym, map, evsel, 0, NULL) < 0)
|
|
return -1;
|
|
|
|
symbol__calc_percent(sym, evsel);
|
|
|
|
if (print_lines) {
|
|
srcline_full_filename = full_paths;
|
|
symbol__calc_lines(sym, map, &source_line);
|
|
print_summary(&source_line, dso->long_name);
|
|
}
|
|
|
|
symbol__annotate_printf(sym, map, evsel, full_paths,
|
|
min_pcnt, max_lines, 0);
|
|
|
|
annotated_source__purge(symbol__annotation(sym)->src);
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool ui__has_annotation(void)
|
|
{
|
|
return use_browser == 1 && perf_hpp_list.sym;
|
|
}
|