| /* |
| * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> |
| * |
| * Parts came from builtin-annotate.c, see those files for further |
| * copyright notes. |
| * |
| * Released under the GPL v2. (and only v2, not any later version) |
| */ |
| |
| #include "util.h" |
| #include "ui/ui.h" |
| #include "sort.h" |
| #include "build-id.h" |
| #include "color.h" |
| #include "cache.h" |
| #include "symbol.h" |
| #include "debug.h" |
| #include "annotate.h" |
| #include "evsel.h" |
| #include "block-range.h" |
| #include "arch/common.h" |
| #include <regex.h> |
| #include <pthread.h> |
| #include <linux/bitops.h> |
| #include <linux/kernel.h> |
| #include <sys/utsname.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; |
| int (*init)(struct arch *arch); |
| 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", |
| .instructions = x86__instructions, |
| .nr_instructions = ARRAY_SIZE(x86__instructions), |
| .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, "%-6.6s %s", ins->name, ops->raw); |
| } |
| |
| int ins__scnprintf(struct ins *ins, char *bf, size_t size, |
| struct ins_operands *ops) |
| { |
| if (ins->ops->scnprintf) |
| return ins->ops->scnprintf(ins, bf, size, ops); |
| |
| return ins__raw_scnprintf(ins, bf, size, ops); |
| } |
| |
| static int call__parse(struct 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, "%-6.6s %s", ins->name, ops->target.name); |
| |
| if (ops->target.addr == 0) |
| return ins__raw_scnprintf(ins, bf, size, ops); |
| |
| return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr); |
| } |
| |
| static struct ins_ops call_ops = { |
| .parse = call__parse, |
| .scnprintf = call__scnprintf, |
| }; |
| |
| bool ins__is_call(const struct ins *ins) |
| { |
| return ins->ops == &call_ops; |
| } |
| |
| static int jump__parse(struct 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, ','); |
| |
| 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) |
| { |
| if (!ops->target.addr || ops->target.offset < 0) |
| return ins__raw_scnprintf(ins, bf, size, ops); |
| |
| return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset); |
| } |
| |
| static struct ins_ops jump_ops = { |
| .parse = jump__parse, |
| .scnprintf = jump__scnprintf, |
| }; |
| |
| bool ins__is_jump(const struct ins *ins) |
| { |
| return ins->ops == &jump_ops; |
| } |
| |
| static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep) |
| { |
| char *endptr, *name, *t; |
| |
| if (strstr(raw, "(%rip)") == NULL) |
| return 0; |
| |
| *addrp = strtoull(comment, &endptr, 16); |
| name = strchr(endptr, '<'); |
| if (name == NULL) |
| return -1; |
| |
| name++; |
| |
| t = strchr(name, '>'); |
| if (t == NULL) |
| return 0; |
| |
| *t = '\0'; |
| *namep = strdup(name); |
| *t = '>'; |
| |
| return 0; |
| } |
| |
| static int lock__parse(struct 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, "%-6.6s ", ins->name); |
| return printed + ins__scnprintf(&ops->locked.ins, bf + printed, |
| size - printed, ops->locked.ops); |
| } |
| |
| static void lock__delete(struct ins_operands *ops) |
| { |
| struct ins *ins = &ops->locked.ins; |
| |
| if (ins->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, &ops->source.addr, &ops->source.name); |
| comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name); |
| |
| return 0; |
| |
| out_free_source: |
| zfree(&ops->source.raw); |
| return -1; |
| } |
| |
| static int mov__scnprintf(struct ins *ins, char *bf, size_t size, |
| struct ins_operands *ops) |
| { |
| return scnprintf(bf, size, "%-6.6s %s,%s", ins->name, |
| ops->source.name ?: ops->source.raw, |
| ops->target.name ?: ops->target.raw); |
| } |
| |
| static struct ins_ops mov_ops = { |
| .parse = mov__parse, |
| .scnprintf = mov__scnprintf, |
| }; |
| |
| static int dec__parse(struct 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, &ops->target.addr, &ops->target.name); |
| |
| return 0; |
| } |
| |
| static int dec__scnprintf(struct ins *ins, char *bf, size_t size, |
| struct ins_operands *ops) |
| { |
| return scnprintf(bf, size, "%-6.6s %s", ins->name, |
| ops->target.name ?: ops->target.raw); |
| } |
| |
| static struct ins_ops dec_ops = { |
| .parse = dec__parse, |
| .scnprintf = dec__scnprintf, |
| }; |
| |
| static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size, |
| struct ins_operands *ops __maybe_unused) |
| { |
| return scnprintf(bf, size, "%-6.6s", "nop"); |
| } |
| |
| static struct ins_ops nop_ops = { |
| .scnprintf = nop__scnprintf, |
| }; |
| |
| static struct ins_ops ret_ops = { |
| .scnprintf = ins__raw_scnprintf, |
| }; |
| |
| bool ins__is_ret(const struct ins *ins) |
| { |
| return ins->ops == &ret_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); |
| const size_t size = symbol__size(sym); |
| size_t sizeof_sym_hist; |
| |
| /* Check for overflow when calculating sizeof_sym_hist */ |
| if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64)) |
| return -1; |
| |
| sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64)); |
| |
| /* Check for overflow in zalloc argument */ |
| if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src)) |
| / symbol_conf.nr_events) |
| return -1; |
| |
| notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist); |
| if (notes->src == NULL) |
| return -1; |
| notes->src->sizeof_sym_hist = sizeof_sym_hist; |
| notes->src->nr_histograms = symbol_conf.nr_events; |
| INIT_LIST_HEAD(¬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) |
| { |
| 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->sum++; |
| h->addr[offset]++; |
| |
| pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64 |
| ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name, |
| addr, addr - sym->start, evidx, h->addr[offset]); |
| return 0; |
| } |
| |
| static 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 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); |
| } |
| |
| 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, int evidx) |
| { |
| return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr); |
| } |
| |
| int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip) |
| { |
| return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip); |
| } |
| |
| static void disasm_line__init_ins(struct disasm_line *dl, 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; |
| } |
| |
| static struct disasm_line *disasm_line__new(s64 offset, char *line, |
| size_t privsize, int line_nr, |
| struct arch *arch, |
| struct map *map) |
| { |
| struct disasm_line *dl = zalloc(sizeof(*dl) + privsize); |
| |
| if (dl != NULL) { |
| dl->offset = offset; |
| dl->line = strdup(line); |
| dl->line_nr = line_nr; |
| if (dl->line == NULL) |
| goto out_delete; |
| |
| if (offset != -1) { |
| if (disasm_line__parse(dl->line, &dl->ins.name, &dl->ops.raw) < 0) |
| goto out_free_line; |
| |
| disasm_line__init_ins(dl, arch, map); |
| } |
| } |
| |
| 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); |
| 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; |
| free(dl); |
| } |
| |
| int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw) |
| { |
| if (raw || !dl->ins.ops) |
| return scnprintf(bf, size, "%-6.6s %s", dl->ins.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, u64 *nr_samples) |
| { |
| struct source_line *src_line = notes->src->lines; |
| double percent = 0.0; |
| *nr_samples = 0; |
| |
| if (src_line) { |
| size_t sizeof_src_line = sizeof(*src_line) + |
| sizeof(src_line->samples) * (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->samples[evidx].percent; |
| *nr_samples += src_line->samples[evidx].nr; |
| offset++; |
| } |
| } else { |
| struct sym_hist *h = annotation__histogram(notes, evidx); |
| unsigned int hits = 0; |
| |
| while (offset < end) |
| hits += h->addr[offset++]; |
| |
| if (h->sum) { |
| *nr_samples = hits; |
| percent = 100.0 * hits / h->sum; |
| } |
| } |
| |
| return percent; |
| } |
| |
| 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, 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; |
| u64 nr_samples; |
| double percent, max_percent = 0.0; |
| double *ppercents = &percent; |
| u64 *psamples = &nr_samples; |
| 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; |
| struct block_range *br; |
| |
| 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)); |
| psamples = calloc(nr_percent, sizeof(u64)); |
| if (ppercents == NULL || psamples == 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, &nr_samples); |
| |
| ppercents[i] = percent; |
| psamples[i] = nr_samples; |
| 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]; |
| nr_samples = psamples[i]; |
| color = get_percent_color(percent); |
| |
| if (symbol_conf.show_total_period) |
| color_fprintf(stdout, color, " %7" PRIu64, |
| nr_samples); |
| else |
| color_fprintf(stdout, color, " %7.2f", percent); |
| } |
| |
| printf(" : "); |
| |
| br = block_range__find(addr); |
| color_fprintf(stdout, annotate__address_color(br), " %" PRIx64 ":", addr); |
| color_fprintf(stdout, annotate__asm_color(br), "%s", dl->line); |
| annotate__branch_printf(br, addr); |
| printf("\n"); |
| |
| if (ppercents != &percent) |
| free(ppercents); |
| |
| if (psamples != &nr_samples) |
| free(psamples); |
| |
| } 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, |
| struct arch *arch, |
| FILE *file, size_t privsize, |
| int *line_nr) |
| { |
| struct annotation *notes = symbol__annotation(sym); |
| struct disasm_line *dl; |
| char *line = NULL, *parsed_line, *tmp, *tmp2; |
| 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; |
| } |
| |
| dl = disasm_line__new(offset, parsed_line, privsize, *line_nr, arch, map); |
| 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); |
| } |
| |
| disasm__add(¬es->src->source, dl); |
| |
| return 0; |
| } |
| |
| static __attribute__((constructor)) void symbol__init_regexpr(void) |
| { |
| regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED); |
| } |
| |
| static void delete_last_nop(struct symbol *sym) |
| { |
| struct annotation *notes = symbol__annotation(sym); |
| struct list_head *list = ¬es->src->source; |
| struct disasm_line *dl; |
| |
| while (!list_empty(list)) { |
| dl = list_entry(list->prev, struct disasm_line, node); |
| |
| if (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__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; |
| |
| 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); |
| 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; |
| |
| 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 const char *annotate__norm_arch(const char *arch_name) |
| { |
| struct utsname uts; |
| |
| if (!arch_name) { /* Assume we are annotating locally. */ |
| if (uname(&uts) < 0) |
| return NULL; |
| arch_name = uts.machine; |
| } |
| return normalize_arch((char *)arch_name); |
| } |
| |
| int symbol__disassemble(struct symbol *sym, struct map *map, const char *arch_name, size_t privsize) |
| { |
| struct dso *dso = map->dso; |
| char command[PATH_MAX * 2]; |
| struct arch *arch = NULL; |
| 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; |
| |
| arch_name = annotate__norm_arch(arch_name); |
| if (!arch_name) |
| return -1; |
| |
| arch = arch__find(arch_name); |
| if (arch == NULL) |
| return -ENOTSUP; |
| |
| if (arch->init) { |
| err = arch->init(arch); |
| if (err) { |
| pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name); |
| 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[PATH_MAX]; |
| struct kmod_path m; |
| int fd; |
| bool ret; |
| |
| if (kmod_path__parse_ext(&m, symfs_filename)) |
| goto out; |
| |
| snprintf(tmp, PATH_MAX, "/tmp/perf-kmod-XXXXXX"); |
| |
| fd = mkstemp(tmp); |
| if (fd < 0) { |
| free(m.ext); |
| goto out; |
| } |
| |
| ret = decompress_to_file(m.ext, symfs_filename, fd); |
| |
| if (ret) |
| pr_err("Cannot decompress %s %s\n", m.ext, symfs_filename); |
| |
| free(m.ext); |
| close(fd); |
| |
| if (!ret) |
| 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, map, arch, file, privsize, |
| &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 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->samples[i].percent_sum += src_line->samples[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->samples[i].percent_sum = src_line->samples[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->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 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->samples) * (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->samples); |
| } |
| |
| 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, nr_samples; |
| double percent_max = 0.0; |
| |
| src_line->nr_pcnt = nr_pcnt; |
| |
| for (k = 0; k < nr_pcnt; k++) { |
| double percent = 0.0; |
| |
| h = annotation__histogram(notes, evidx + k); |
| nr_samples = h->addr[i]; |
| if (h->sum) |
| percent = 100.0 * nr_samples / h->sum; |
| |
| if (percent > percent_max) |
| percent_max = percent; |
| src_line->samples[k].percent = percent; |
| src_line->samples[k].nr = nr_samples; |
| } |
| |
| if (percent_max <= 0.5) |
| goto next; |
| |
| offset = start + i; |
| src_line->path = get_srcline(map->dso, offset, NULL, |
| false, true); |
| 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->samples[i].percent_sum; |
| color = get_percent_color(percent); |
| color_fprintf(stdout, color, " %7.2f", percent); |
| |
| if (percent > percent_max) |
| percent_max = percent; |
| } |
| |
| path = src_line->path; |
| color = get_percent_color(percent_max); |
| color_fprintf(stdout, color, " %s\n", path); |
| |
| node = rb_next(node); |
| } |
| } |
| |
| static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel) |
| { |
| struct annotation *notes = symbol__annotation(sym); |
| struct sym_hist *h = annotation__histogram(notes, evsel->idx); |
| u64 len = symbol__size(sym), offset; |
| |
| for (offset = 0; offset < len; ++offset) |
| if (h->addr[offset] != 0) |
| printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2, |
| sym->start + offset, h->addr[offset]); |
| printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum); |
| } |
| |
| int symbol__annotate_printf(struct symbol *sym, struct map *map, |
| struct perf_evsel *evsel, bool full_paths, |
| int min_pcnt, int max_lines, int context) |
| { |
| struct dso *dso = map->dso; |
| char *filename; |
| const char *d_filename; |
| const char *evsel_name = perf_evsel__name(evsel); |
| struct annotation *notes = symbol__annotation(sym); |
| struct sym_hist *h = annotation__histogram(notes, evsel->idx); |
| 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 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, "Percent", d_filename, evsel_name, h->sum); |
| |
| printf("%-*.*s----\n", |
| graph_dotted_len, graph_dotted_len, graph_dotted_line); |
| |
| if (verbose > 0) |
| 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->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, 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__disassemble(sym, map, perf_evsel__env_arch(evsel), 0) < 0) |
| return -1; |
| |
| len = symbol__size(sym); |
| |
| if (print_lines) { |
| srcline_full_filename = full_paths; |
| 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; |
| } |
| |
| bool ui__has_annotation(void) |
| { |
| return use_browser == 1 && perf_hpp_list.sym; |
| } |