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OpenCloudOS-Kernel/tools/perf/ui/browsers/annotate.c

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#include "../../util/util.h"
#include "../browser.h"
#include "../helpline.h"
#include "../libslang.h"
#include "../ui.h"
#include "../util.h"
#include "../../util/annotate.h"
#include "../../util/hist.h"
#include "../../util/sort.h"
#include "../../util/symbol.h"
#include "../../util/evsel.h"
#include <pthread.h>
struct browser_disasm_line {
struct rb_node rb_node;
u32 idx;
int idx_asm;
int jump_sources;
/*
* actual length of this array is saved on the nr_events field
* of the struct annotate_browser
*/
double percent[1];
};
static struct annotate_browser_opt {
bool hide_src_code,
use_offset,
jump_arrows,
show_linenr,
show_nr_jumps;
} annotate_browser__opts = {
.use_offset = true,
.jump_arrows = true,
};
struct annotate_browser {
struct ui_browser b;
struct rb_root entries;
struct rb_node *curr_hot;
struct disasm_line *selection;
struct disasm_line **offsets;
int nr_events;
u64 start;
int nr_asm_entries;
int nr_entries;
int max_jump_sources;
int nr_jumps;
bool searching_backwards;
u8 addr_width;
u8 jumps_width;
u8 target_width;
u8 min_addr_width;
u8 max_addr_width;
char search_bf[128];
};
static inline struct browser_disasm_line *disasm_line__browser(struct disasm_line *dl)
{
return (struct browser_disasm_line *)(dl + 1);
}
static bool disasm_line__filter(struct ui_browser *browser __maybe_unused,
void *entry)
{
if (annotate_browser__opts.hide_src_code) {
struct disasm_line *dl = list_entry(entry, struct disasm_line, node);
return dl->offset == -1;
}
return false;
}
static int annotate_browser__jumps_percent_color(struct annotate_browser *browser,
int nr, bool current)
{
if (current && (!browser->b.use_navkeypressed || browser->b.navkeypressed))
return HE_COLORSET_SELECTED;
if (nr == browser->max_jump_sources)
return HE_COLORSET_TOP;
if (nr > 1)
return HE_COLORSET_MEDIUM;
return HE_COLORSET_NORMAL;
}
static int annotate_browser__set_jumps_percent_color(struct annotate_browser *browser,
int nr, bool current)
{
int color = annotate_browser__jumps_percent_color(browser, nr, current);
return ui_browser__set_color(&browser->b, color);
}
static void annotate_browser__write(struct ui_browser *browser, void *entry, int row)
{
struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
struct disasm_line *dl = list_entry(entry, struct disasm_line, node);
struct browser_disasm_line *bdl = disasm_line__browser(dl);
bool current_entry = ui_browser__is_current_entry(browser, row);
bool change_color = (!annotate_browser__opts.hide_src_code &&
(!current_entry || (browser->use_navkeypressed &&
!browser->navkeypressed)));
int width = browser->width, printed;
int i, pcnt_width = 7 * ab->nr_events;
double percent_max = 0.0;
char bf[256];
for (i = 0; i < ab->nr_events; i++) {
if (bdl->percent[i] > percent_max)
percent_max = bdl->percent[i];
}
if (dl->offset != -1 && percent_max != 0.0) {
for (i = 0; i < ab->nr_events; i++) {
ui_browser__set_percent_color(browser, bdl->percent[i],
current_entry);
slsmg_printf("%6.2f ", bdl->percent[i]);
}
} else {
ui_browser__set_percent_color(browser, 0, current_entry);
slsmg_write_nstring(" ", pcnt_width);
}
SLsmg_write_char(' ');
/* The scroll bar isn't being used */
if (!browser->navkeypressed)
width += 1;
if (!*dl->line)
slsmg_write_nstring(" ", width - pcnt_width);
else if (dl->offset == -1) {
if (dl->line_nr && annotate_browser__opts.show_linenr)
printed = scnprintf(bf, sizeof(bf), "%-*d ",
ab->addr_width + 1, dl->line_nr);
else
printed = scnprintf(bf, sizeof(bf), "%*s ",
ab->addr_width, " ");
slsmg_write_nstring(bf, printed);
slsmg_write_nstring(dl->line, width - printed - pcnt_width + 1);
} else {
u64 addr = dl->offset;
int color = -1;
if (!annotate_browser__opts.use_offset)
addr += ab->start;
if (!annotate_browser__opts.use_offset) {
printed = scnprintf(bf, sizeof(bf), "%" PRIx64 ": ", addr);
} else {
if (bdl->jump_sources) {
if (annotate_browser__opts.show_nr_jumps) {
int prev;
printed = scnprintf(bf, sizeof(bf), "%*d ",
ab->jumps_width,
bdl->jump_sources);
prev = annotate_browser__set_jumps_percent_color(ab, bdl->jump_sources,
current_entry);
slsmg_write_nstring(bf, printed);
ui_browser__set_color(browser, prev);
}
printed = scnprintf(bf, sizeof(bf), "%*" PRIx64 ": ",
ab->target_width, addr);
} else {
printed = scnprintf(bf, sizeof(bf), "%*s ",
ab->addr_width, " ");
}
}
if (change_color)
color = ui_browser__set_color(browser, HE_COLORSET_ADDR);
slsmg_write_nstring(bf, printed);
if (change_color)
ui_browser__set_color(browser, color);
if (dl->ins && dl->ins->ops->scnprintf) {
if (ins__is_jump(dl->ins)) {
bool fwd = dl->ops.target.offset > (u64)dl->offset;
ui_browser__write_graph(browser, fwd ? SLSMG_DARROW_CHAR :
SLSMG_UARROW_CHAR);
SLsmg_write_char(' ');
} else if (ins__is_call(dl->ins)) {
ui_browser__write_graph(browser, SLSMG_RARROW_CHAR);
SLsmg_write_char(' ');
} else {
slsmg_write_nstring(" ", 2);
}
} else {
if (strcmp(dl->name, "retq")) {
slsmg_write_nstring(" ", 2);
} else {
ui_browser__write_graph(browser, SLSMG_LARROW_CHAR);
SLsmg_write_char(' ');
}
}
disasm_line__scnprintf(dl, bf, sizeof(bf), !annotate_browser__opts.use_offset);
slsmg_write_nstring(bf, width - pcnt_width - 3 - printed);
}
if (current_entry)
ab->selection = dl;
}
static bool disasm_line__is_valid_jump(struct disasm_line *dl, struct symbol *sym)
{
if (!dl || !dl->ins || !ins__is_jump(dl->ins)
|| !disasm_line__has_offset(dl)
|| dl->ops.target.offset >= symbol__size(sym))
return false;
return true;
}
static void annotate_browser__draw_current_jump(struct ui_browser *browser)
{
struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
struct disasm_line *cursor = ab->selection, *target;
struct browser_disasm_line *btarget, *bcursor;
unsigned int from, to;
struct map_symbol *ms = ab->b.priv;
struct symbol *sym = ms->sym;
u8 pcnt_width = 7;
/* PLT symbols contain external offsets */
if (strstr(sym->name, "@plt"))
return;
if (!disasm_line__is_valid_jump(cursor, sym))
return;
target = ab->offsets[cursor->ops.target.offset];
if (!target)
return;
bcursor = disasm_line__browser(cursor);
btarget = disasm_line__browser(target);
if (annotate_browser__opts.hide_src_code) {
from = bcursor->idx_asm;
to = btarget->idx_asm;
} else {
from = (u64)bcursor->idx;
to = (u64)btarget->idx;
}
pcnt_width *= ab->nr_events;
ui_browser__set_color(browser, HE_COLORSET_CODE);
__ui_browser__line_arrow(browser, pcnt_width + 2 + ab->addr_width,
from, to);
}
static unsigned int annotate_browser__refresh(struct ui_browser *browser)
{
struct annotate_browser *ab = container_of(browser, struct annotate_browser, b);
int ret = ui_browser__list_head_refresh(browser);
int pcnt_width;
pcnt_width = 7 * ab->nr_events;
if (annotate_browser__opts.jump_arrows)
annotate_browser__draw_current_jump(browser);
ui_browser__set_color(browser, HE_COLORSET_NORMAL);
__ui_browser__vline(browser, pcnt_width, 0, browser->height - 1);
return ret;
}
static int disasm__cmp(struct browser_disasm_line *a,
struct browser_disasm_line *b, int nr_pcnt)
{
int i;
for (i = 0; i < nr_pcnt; i++) {
if (a->percent[i] == b->percent[i])
continue;
return a->percent[i] < b->percent[i];
}
return 0;
}
static void disasm_rb_tree__insert(struct rb_root *root, struct browser_disasm_line *bdl,
int nr_events)
{
struct rb_node **p = &root->rb_node;
struct rb_node *parent = NULL;
struct browser_disasm_line *l;
while (*p != NULL) {
parent = *p;
l = rb_entry(parent, struct browser_disasm_line, rb_node);
if (disasm__cmp(bdl, l, nr_events))
p = &(*p)->rb_left;
else
p = &(*p)->rb_right;
}
rb_link_node(&bdl->rb_node, parent, p);
rb_insert_color(&bdl->rb_node, root);
}
static void annotate_browser__set_top(struct annotate_browser *browser,
struct disasm_line *pos, u32 idx)
{
unsigned back;
ui_browser__refresh_dimensions(&browser->b);
back = browser->b.height / 2;
browser->b.top_idx = browser->b.index = idx;
while (browser->b.top_idx != 0 && back != 0) {
pos = list_entry(pos->node.prev, struct disasm_line, node);
if (disasm_line__filter(&browser->b, &pos->node))
continue;
--browser->b.top_idx;
--back;
}
browser->b.top = pos;
browser->b.navkeypressed = true;
}
static void annotate_browser__set_rb_top(struct annotate_browser *browser,
struct rb_node *nd)
{
struct browser_disasm_line *bpos;
struct disasm_line *pos;
u32 idx;
bpos = rb_entry(nd, struct browser_disasm_line, rb_node);
pos = ((struct disasm_line *)bpos) - 1;
idx = bpos->idx;
if (annotate_browser__opts.hide_src_code)
idx = bpos->idx_asm;
annotate_browser__set_top(browser, pos, idx);
browser->curr_hot = nd;
}
static void annotate_browser__calc_percent(struct annotate_browser *browser,
struct perf_evsel *evsel)
{
struct map_symbol *ms = browser->b.priv;
struct symbol *sym = ms->sym;
struct annotation *notes = symbol__annotation(sym);
struct disasm_line *pos, *next;
s64 len = symbol__size(sym);
browser->entries = RB_ROOT;
pthread_mutex_lock(&notes->lock);
list_for_each_entry(pos, &notes->src->source, node) {
struct browser_disasm_line *bpos = disasm_line__browser(pos);
const char *path = NULL;
double max_percent = 0.0;
int i;
if (pos->offset == -1) {
RB_CLEAR_NODE(&bpos->rb_node);
continue;
}
next = disasm__get_next_ip_line(&notes->src->source, pos);
for (i = 0; i < browser->nr_events; i++) {
bpos->percent[i] = disasm__calc_percent(notes,
evsel->idx + i,
pos->offset,
next ? next->offset : len,
&path);
if (max_percent < bpos->percent[i])
max_percent = bpos->percent[i];
}
if (max_percent < 0.01) {
RB_CLEAR_NODE(&bpos->rb_node);
continue;
}
disasm_rb_tree__insert(&browser->entries, bpos,
browser->nr_events);
}
pthread_mutex_unlock(&notes->lock);
browser->curr_hot = rb_last(&browser->entries);
}
static bool annotate_browser__toggle_source(struct annotate_browser *browser)
{
struct disasm_line *dl;
struct browser_disasm_line *bdl;
off_t offset = browser->b.index - browser->b.top_idx;
browser->b.seek(&browser->b, offset, SEEK_CUR);
dl = list_entry(browser->b.top, struct disasm_line, node);
bdl = disasm_line__browser(dl);
if (annotate_browser__opts.hide_src_code) {
if (bdl->idx_asm < offset)
offset = bdl->idx;
browser->b.nr_entries = browser->nr_entries;
annotate_browser__opts.hide_src_code = false;
browser->b.seek(&browser->b, -offset, SEEK_CUR);
browser->b.top_idx = bdl->idx - offset;
browser->b.index = bdl->idx;
} else {
if (bdl->idx_asm < 0) {
ui_helpline__puts("Only available for assembly lines.");
browser->b.seek(&browser->b, -offset, SEEK_CUR);
return false;
}
if (bdl->idx_asm < offset)
offset = bdl->idx_asm;
browser->b.nr_entries = browser->nr_asm_entries;
annotate_browser__opts.hide_src_code = true;
browser->b.seek(&browser->b, -offset, SEEK_CUR);
browser->b.top_idx = bdl->idx_asm - offset;
browser->b.index = bdl->idx_asm;
}
return true;
}
static void annotate_browser__init_asm_mode(struct annotate_browser *browser)
{
ui_browser__reset_index(&browser->b);
browser->b.nr_entries = browser->nr_asm_entries;
}
#define SYM_TITLE_MAX_SIZE (PATH_MAX + 64)
static int sym_title(struct symbol *sym, struct map *map, char *title,
size_t sz)
{
return snprintf(title, sz, "%s %s", sym->name, map->dso->long_name);
}
static bool annotate_browser__callq(struct annotate_browser *browser,
struct perf_evsel *evsel,
struct hist_browser_timer *hbt)
{
struct map_symbol *ms = browser->b.priv;
struct disasm_line *dl = browser->selection;
struct annotation *notes;
struct addr_map_symbol target = {
.map = ms->map,
.addr = map__objdump_2mem(ms->map, dl->ops.target.addr),
};
char title[SYM_TITLE_MAX_SIZE];
if (!ins__is_call(dl->ins))
return false;
if (map_groups__find_ams(&target, NULL) ||
map__rip_2objdump(target.map, target.map->map_ip(target.map,
target.addr)) !=
dl->ops.target.addr) {
ui_helpline__puts("The called function was not found.");
return true;
}
notes = symbol__annotation(target.sym);
pthread_mutex_lock(&notes->lock);
if (notes->src == NULL && symbol__alloc_hist(target.sym) < 0) {
pthread_mutex_unlock(&notes->lock);
ui__warning("Not enough memory for annotating '%s' symbol!\n",
target.sym->name);
return true;
}
pthread_mutex_unlock(&notes->lock);
symbol__tui_annotate(target.sym, target.map, evsel, hbt);
sym_title(ms->sym, ms->map, title, sizeof(title));
ui_browser__show_title(&browser->b, title);
return true;
}
static
struct disasm_line *annotate_browser__find_offset(struct annotate_browser *browser,
s64 offset, s64 *idx)
{
struct map_symbol *ms = browser->b.priv;
struct symbol *sym = ms->sym;
struct annotation *notes = symbol__annotation(sym);
struct disasm_line *pos;
*idx = 0;
list_for_each_entry(pos, &notes->src->source, node) {
if (pos->offset == offset)
return pos;
if (!disasm_line__filter(&browser->b, &pos->node))
++*idx;
}
return NULL;
}
static bool annotate_browser__jump(struct annotate_browser *browser)
{
struct disasm_line *dl = browser->selection;
s64 idx;
if (!ins__is_jump(dl->ins))
return false;
dl = annotate_browser__find_offset(browser, dl->ops.target.offset, &idx);
if (dl == NULL) {
ui_helpline__puts("Invalid jump offset");
return true;
}
annotate_browser__set_top(browser, dl, idx);
return true;
}
static
struct disasm_line *annotate_browser__find_string(struct annotate_browser *browser,
char *s, s64 *idx)
{
struct map_symbol *ms = browser->b.priv;
struct symbol *sym = ms->sym;
struct annotation *notes = symbol__annotation(sym);
struct disasm_line *pos = browser->selection;
*idx = browser->b.index;
list_for_each_entry_continue(pos, &notes->src->source, node) {
if (disasm_line__filter(&browser->b, &pos->node))
continue;
++*idx;
if (pos->line && strstr(pos->line, s) != NULL)
return pos;
}
return NULL;
}
static bool __annotate_browser__search(struct annotate_browser *browser)
{
struct disasm_line *dl;
s64 idx;
dl = annotate_browser__find_string(browser, browser->search_bf, &idx);
if (dl == NULL) {
ui_helpline__puts("String not found!");
return false;
}
annotate_browser__set_top(browser, dl, idx);
browser->searching_backwards = false;
return true;
}
static
struct disasm_line *annotate_browser__find_string_reverse(struct annotate_browser *browser,
char *s, s64 *idx)
{
struct map_symbol *ms = browser->b.priv;
struct symbol *sym = ms->sym;
struct annotation *notes = symbol__annotation(sym);
struct disasm_line *pos = browser->selection;
*idx = browser->b.index;
list_for_each_entry_continue_reverse(pos, &notes->src->source, node) {
if (disasm_line__filter(&browser->b, &pos->node))
continue;
--*idx;
if (pos->line && strstr(pos->line, s) != NULL)
return pos;
}
return NULL;
}
static bool __annotate_browser__search_reverse(struct annotate_browser *browser)
{
struct disasm_line *dl;
s64 idx;
dl = annotate_browser__find_string_reverse(browser, browser->search_bf, &idx);
if (dl == NULL) {
ui_helpline__puts("String not found!");
return false;
}
annotate_browser__set_top(browser, dl, idx);
browser->searching_backwards = true;
return true;
}
static bool annotate_browser__search_window(struct annotate_browser *browser,
int delay_secs)
{
if (ui_browser__input_window("Search", "String: ", browser->search_bf,
"ENTER: OK, ESC: Cancel",
delay_secs * 2) != K_ENTER ||
!*browser->search_bf)
return false;
return true;
}
static bool annotate_browser__search(struct annotate_browser *browser, int delay_secs)
{
if (annotate_browser__search_window(browser, delay_secs))
return __annotate_browser__search(browser);
return false;
}
static bool annotate_browser__continue_search(struct annotate_browser *browser,
int delay_secs)
{
if (!*browser->search_bf)
return annotate_browser__search(browser, delay_secs);
return __annotate_browser__search(browser);
}
static bool annotate_browser__search_reverse(struct annotate_browser *browser,
int delay_secs)
{
if (annotate_browser__search_window(browser, delay_secs))
return __annotate_browser__search_reverse(browser);
return false;
}
static
bool annotate_browser__continue_search_reverse(struct annotate_browser *browser,
int delay_secs)
{
if (!*browser->search_bf)
return annotate_browser__search_reverse(browser, delay_secs);
return __annotate_browser__search_reverse(browser);
}
static void annotate_browser__update_addr_width(struct annotate_browser *browser)
{
if (annotate_browser__opts.use_offset)
browser->target_width = browser->min_addr_width;
else
browser->target_width = browser->max_addr_width;
browser->addr_width = browser->target_width;
if (annotate_browser__opts.show_nr_jumps)
browser->addr_width += browser->jumps_width + 1;
}
static int annotate_browser__run(struct annotate_browser *browser,
struct perf_evsel *evsel,
struct hist_browser_timer *hbt)
{
struct rb_node *nd = NULL;
struct map_symbol *ms = browser->b.priv;
struct symbol *sym = ms->sym;
const char *help = "Press 'h' for help on key bindings";
int delay_secs = hbt ? hbt->refresh : 0;
int key;
char title[SYM_TITLE_MAX_SIZE];
sym_title(sym, ms->map, title, sizeof(title));
if (ui_browser__show(&browser->b, title, help) < 0)
return -1;
annotate_browser__calc_percent(browser, evsel);
if (browser->curr_hot) {
annotate_browser__set_rb_top(browser, browser->curr_hot);
browser->b.navkeypressed = false;
}
nd = browser->curr_hot;
while (1) {
key = ui_browser__run(&browser->b, delay_secs);
if (delay_secs != 0) {
annotate_browser__calc_percent(browser, evsel);
/*
* Current line focus got out of the list of most active
* lines, NULL it so that if TAB|UNTAB is pressed, we
* move to curr_hot (current hottest line).
*/
if (nd != NULL && RB_EMPTY_NODE(nd))
nd = NULL;
}
switch (key) {
case K_TIMER:
if (hbt)
hbt->timer(hbt->arg);
if (delay_secs != 0)
symbol__annotate_decay_histogram(sym, evsel->idx);
continue;
case K_TAB:
if (nd != NULL) {
nd = rb_prev(nd);
if (nd == NULL)
nd = rb_last(&browser->entries);
} else
nd = browser->curr_hot;
break;
case K_UNTAB:
if (nd != NULL)
nd = rb_next(nd);
if (nd == NULL)
nd = rb_first(&browser->entries);
else
nd = browser->curr_hot;
break;
case K_F1:
case 'h':
ui_browser__help_window(&browser->b,
"UP/DOWN/PGUP\n"
"PGDN/SPACE Navigate\n"
"q/ESC/CTRL+C Exit\n\n"
"-> Go to target\n"
"<- Exit\n"
"H Cycle thru hottest instructions\n"
"j Toggle showing jump to target arrows\n"
"J Toggle showing number of jump sources on targets\n"
"n Search next string\n"
"o Toggle disassembler output/simplified view\n"
"s Toggle source code view\n"
"/ Search string\n"
"k Toggle line numbers\n"
"r Run available scripts\n"
"? Search string backwards\n");
continue;
case 'r':
{
script_browse(NULL);
continue;
}
case 'k':
annotate_browser__opts.show_linenr =
!annotate_browser__opts.show_linenr;
break;
case 'H':
nd = browser->curr_hot;
break;
case 's':
if (annotate_browser__toggle_source(browser))
ui_helpline__puts(help);
continue;
case 'o':
annotate_browser__opts.use_offset = !annotate_browser__opts.use_offset;
annotate_browser__update_addr_width(browser);
continue;
case 'j':
annotate_browser__opts.jump_arrows = !annotate_browser__opts.jump_arrows;
continue;
case 'J':
annotate_browser__opts.show_nr_jumps = !annotate_browser__opts.show_nr_jumps;
annotate_browser__update_addr_width(browser);
continue;
case '/':
if (annotate_browser__search(browser, delay_secs)) {
show_help:
ui_helpline__puts(help);
}
continue;
case 'n':
if (browser->searching_backwards ?
annotate_browser__continue_search_reverse(browser, delay_secs) :
annotate_browser__continue_search(browser, delay_secs))
goto show_help;
continue;
case '?':
if (annotate_browser__search_reverse(browser, delay_secs))
goto show_help;
continue;
case 'D': {
static int seq;
ui_helpline__pop();
ui_helpline__fpush("%d: nr_ent=%d, height=%d, idx=%d, top_idx=%d, nr_asm_entries=%d",
seq++, browser->b.nr_entries,
browser->b.height,
browser->b.index,
browser->b.top_idx,
browser->nr_asm_entries);
}
continue;
case K_ENTER:
case K_RIGHT:
if (browser->selection == NULL)
ui_helpline__puts("Huh? No selection. Report to linux-kernel@vger.kernel.org");
else if (browser->selection->offset == -1)
ui_helpline__puts("Actions are only available for assembly lines.");
else if (!browser->selection->ins) {
if (strcmp(browser->selection->name, "retq"))
goto show_sup_ins;
goto out;
} else if (!(annotate_browser__jump(browser) ||
annotate_browser__callq(browser, evsel, hbt))) {
show_sup_ins:
ui_helpline__puts("Actions are only available for 'callq', 'retq' & jump instructions.");
}
continue;
case K_LEFT:
case K_ESC:
case 'q':
case CTRL('c'):
goto out;
default:
continue;
}
if (nd != NULL)
annotate_browser__set_rb_top(browser, nd);
}
out:
ui_browser__hide(&browser->b);
return key;
}
int hist_entry__tui_annotate(struct hist_entry *he, struct perf_evsel *evsel,
struct hist_browser_timer *hbt)
{
return symbol__tui_annotate(he->ms.sym, he->ms.map, evsel, hbt);
}
static void annotate_browser__mark_jump_targets(struct annotate_browser *browser,
size_t size)
{
u64 offset;
struct map_symbol *ms = browser->b.priv;
struct symbol *sym = ms->sym;
/* PLT symbols contain external offsets */
if (strstr(sym->name, "@plt"))
return;
for (offset = 0; offset < size; ++offset) {
struct disasm_line *dl = browser->offsets[offset], *dlt;
struct browser_disasm_line *bdlt;
if (!disasm_line__is_valid_jump(dl, sym))
continue;
dlt = browser->offsets[dl->ops.target.offset];
/*
* FIXME: Oops, no jump target? Buggy disassembler? Or do we
* have to adjust to the previous offset?
*/
if (dlt == NULL)
continue;
bdlt = disasm_line__browser(dlt);
if (++bdlt->jump_sources > browser->max_jump_sources)
browser->max_jump_sources = bdlt->jump_sources;
++browser->nr_jumps;
}
}
static inline int width_jumps(int n)
{
if (n >= 100)
return 5;
if (n / 10)
return 2;
return 1;
}
int symbol__tui_annotate(struct symbol *sym, struct map *map,
struct perf_evsel *evsel,
struct hist_browser_timer *hbt)
{
struct disasm_line *pos, *n;
struct annotation *notes;
size_t size;
struct map_symbol ms = {
.map = map,
.sym = sym,
};
struct annotate_browser browser = {
.b = {
.refresh = annotate_browser__refresh,
.seek = ui_browser__list_head_seek,
.write = annotate_browser__write,
.filter = disasm_line__filter,
.priv = &ms,
.use_navkeypressed = true,
},
};
int ret = -1;
int nr_pcnt = 1;
size_t sizeof_bdl = sizeof(struct browser_disasm_line);
if (sym == NULL)
return -1;
size = symbol__size(sym);
if (map->dso->annotate_warned)
return -1;
browser.offsets = zalloc(size * sizeof(struct disasm_line *));
if (browser.offsets == NULL) {
ui__error("Not enough memory!");
return -1;
}
if (perf_evsel__is_group_event(evsel)) {
nr_pcnt = evsel->nr_members;
sizeof_bdl += sizeof(double) * (nr_pcnt - 1);
}
if (symbol__annotate(sym, map, sizeof_bdl) < 0) {
ui__error("%s", ui_helpline__last_msg);
goto out_free_offsets;
}
ui_helpline__push("Press <- or ESC to exit");
notes = symbol__annotation(sym);
browser.start = map__rip_2objdump(map, sym->start);
list_for_each_entry(pos, &notes->src->source, node) {
struct browser_disasm_line *bpos;
size_t line_len = strlen(pos->line);
if (browser.b.width < line_len)
browser.b.width = line_len;
bpos = disasm_line__browser(pos);
bpos->idx = browser.nr_entries++;
if (pos->offset != -1) {
bpos->idx_asm = browser.nr_asm_entries++;
/*
* FIXME: short term bandaid to cope with assembly
* routines that comes with labels in the same column
* as the address in objdump, sigh.
*
* E.g. copy_user_generic_unrolled
*/
if (pos->offset < (s64)size)
browser.offsets[pos->offset] = pos;
} else
bpos->idx_asm = -1;
}
annotate_browser__mark_jump_targets(&browser, size);
browser.addr_width = browser.target_width = browser.min_addr_width = hex_width(size);
browser.max_addr_width = hex_width(sym->end);
browser.jumps_width = width_jumps(browser.max_jump_sources);
browser.nr_events = nr_pcnt;
browser.b.nr_entries = browser.nr_entries;
browser.b.entries = &notes->src->source,
browser.b.width += 18; /* Percentage */
if (annotate_browser__opts.hide_src_code)
annotate_browser__init_asm_mode(&browser);
annotate_browser__update_addr_width(&browser);
ret = annotate_browser__run(&browser, evsel, hbt);
list_for_each_entry_safe(pos, n, &notes->src->source, node) {
list_del(&pos->node);
disasm_line__free(pos);
}
out_free_offsets:
free(browser.offsets);
return ret;
}
#define ANNOTATE_CFG(n) \
{ .name = #n, .value = &annotate_browser__opts.n, }
/*
* Keep the entries sorted, they are bsearch'ed
*/
static struct annotate_config {
const char *name;
bool *value;
} annotate__configs[] = {
ANNOTATE_CFG(hide_src_code),
ANNOTATE_CFG(jump_arrows),
ANNOTATE_CFG(show_linenr),
ANNOTATE_CFG(show_nr_jumps),
ANNOTATE_CFG(use_offset),
};
#undef ANNOTATE_CFG
static int annotate_config__cmp(const void *name, const void *cfgp)
{
const struct annotate_config *cfg = cfgp;
return strcmp(name, cfg->name);
}
static int annotate__config(const char *var, const char *value,
void *data __maybe_unused)
{
struct annotate_config *cfg;
const char *name;
if (prefixcmp(var, "annotate.") != 0)
return 0;
name = var + 9;
cfg = bsearch(name, annotate__configs, ARRAY_SIZE(annotate__configs),
sizeof(struct annotate_config), annotate_config__cmp);
if (cfg == NULL)
return -1;
*cfg->value = perf_config_bool(name, value);
return 0;
}
void annotate_browser__init(void)
{
perf_config(annotate__config, NULL);
}
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