ui/browsers/map.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 #include <elf.h>
0003 #include <inttypes.h>
0004 #include <sys/ttydefaults.h>
0005 #include <stdlib.h>
0006 #include <string.h>
0007 #include <linux/bitops.h>
0008 #include "../../util/debug.h"
0009 #include "../../util/map.h"
0010 #include "../../util/dso.h"
0011 #include "../../util/symbol.h"
0012 #include "../browser.h"
0013 #include "../helpline.h"
0014 #include "../keysyms.h"
0015 #include "map.h"
0016
0017 #include <linux/ctype.h>
0018
0019 struct map_browser {
0020     struct ui_browser b;
0021     struct map    *map;
0022     u8        addrlen;
0023 };
0024
0025 static void map_browser__write(struct ui_browser *browser, void *nd, int row)
0026 {
0027     struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
0028     struct map_browser *mb = container_of(browser, struct map_browser, b);
0029     bool current_entry = ui_browser__is_current_entry(browser, row);
0030     int width;
0031
0032     ui_browser__set_percent_color(browser, 0, current_entry);
0033     ui_browser__printf(browser, "%*" PRIx64 " %*" PRIx64 " %c ",
0034                mb->addrlen, sym->start, mb->addrlen, sym->end,
0035                sym->binding == STB_GLOBAL ? 'g' :
0036                 sym->binding == STB_LOCAL  ? 'l' : 'w');
0037     width = browser->width - ((mb->addrlen * 2) + 4);
0038     if (width > 0)
0039         ui_browser__write_nstring(browser, sym->name, width);
0040 }
0041
0042 /* FIXME uber-kludgy, see comment on cmd_report... */
0043 static u32 *symbol__browser_index(struct symbol *browser)
0044 {
0045     return ((void *)browser) - sizeof(struct rb_node) - sizeof(u32);
0046 }
0047
0048 static int map_browser__search(struct map_browser *browser)
0049 {
0050     char target[512];
0051     struct symbol *sym;
0052     int err = ui_browser__input_window("Search by name/addr",
0053                        "Prefix with 0x to search by address",
0054                        target, "ENTER: OK, ESC: Cancel", 0);
0055     if (err != K_ENTER)
0056         return -1;
0057
0058     if (target[0] == '0' && tolower(target[1]) == 'x') {
0059         u64 addr = strtoull(target, NULL, 16);
0060         sym = map__find_symbol(browser->map, addr);
0061     } else
0062         sym = map__find_symbol_by_name(browser->map, target);
0063
0064     if (sym != NULL) {
0065         u32 *idx = symbol__browser_index(sym);
0066
0067         browser->b.top = &sym->rb_node;
0068         browser->b.index = browser->b.top_idx = *idx;
0069     } else
0070         ui_helpline__fpush("%s not found!", target);
0071
0072     return 0;
0073 }
0074
0075 static int map_browser__run(struct map_browser *browser)
0076 {
0077     int key;
0078
0079     if (ui_browser__show(&browser->b, browser->map->dso->long_name,
0080                  "Press ESC to exit, %s / to search",
0081                  verbose > 0 ? "" : "restart with -v to use") < 0)
0082         return -1;
0083
0084     while (1) {
0085         key = ui_browser__run(&browser->b, 0);
0086
0087         switch (key) {
0088         case '/':
0089             if (verbose > 0)
0090                 map_browser__search(browser);
0091         default:
0092             break;
0093                 case K_LEFT:
0094                 case K_ESC:
0095                 case 'q':
0096                 case CTRL('c'):
0097                         goto out;
0098         }
0099     }
0100 out:
0101     ui_browser__hide(&browser->b);
0102     return key;
0103 }
0104
0105 int map__browse(struct map *map)
0106 {
0107     struct map_browser mb = {
0108         .b = {
0109             .entries = &map->dso->symbols,
0110             .refresh = ui_browser__rb_tree_refresh,
0111             .seek    = ui_browser__rb_tree_seek,
0112             .write   = map_browser__write,
0113         },
0114         .map = map,
0115     };
0116     struct rb_node *nd;
0117     char tmp[BITS_PER_LONG / 4];
0118     u64 maxaddr = 0;
0119
0120     for (nd = rb_first(mb.b.entries); nd; nd = rb_next(nd)) {
0121         struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
0122
0123         if (maxaddr < pos->end)
0124             maxaddr = pos->end;
0125         if (verbose > 0) {
0126             u32 *idx = symbol__browser_index(pos);
0127             *idx = mb.b.nr_entries;
0128         }
0129         ++mb.b.nr_entries;
0130     }
0131
0132     mb.addrlen = snprintf(tmp, sizeof(tmp), "%" PRIx64, maxaddr);
0133     return map_browser__run(&mb);
0134 }