tools/perf/util/ui/browsers/map.c

   1 #include "../libslang.h"
   2 #include <elf.h>
   3 #include <sys/ttydefaults.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <linux/bitops.h>
   7 #include "../../debug.h"
   8 #include "../../symbol.h"
   9 #include "../browser.h"
  10 #include "../helpline.h"
  11 #include "map.h"
  12
  13 static int ui_entry__read(const char *title, char *bf, size_t size, int width)
  14 {
  15         struct newtExitStruct es;
  16         newtComponent form, entry;
  17         const char *result;
  18         int err = -1;
  19
  20         newtCenteredWindow(width, 1, title);
  21         form = newtForm(NULL, NULL, 0);
  22         if (form == NULL)
  23                 return -1;
  24
  25         entry = newtEntry(0, 0, "0x", width, &result, NEWT_FLAG_SCROLL);
  26         if (entry == NULL)
  27                 goto out_free_form;
  28
  29         newtFormAddComponent(form, entry);
  30         newtFormAddHotKey(form, NEWT_KEY_ENTER);
  31         newtFormAddHotKey(form, NEWT_KEY_ESCAPE);
  32         newtFormAddHotKey(form, NEWT_KEY_LEFT);
  33         newtFormAddHotKey(form, CTRL('c'));
  34         newtFormRun(form, &es);
  35
  36         if (result != NULL) {
  37                 strncpy(bf, result, size);
  38                 err = 0;
  39         }
  40 out_free_form:
  41         newtPopWindow();
  42         newtFormDestroy(form);
  43         return 0;
  44 }
  45
  46 struct map_browser {
  47         struct ui_browser b;
  48         struct map        *map;
  49         u8                addrlen;
  50 };
  51
  52 static void map_browser__write(struct ui_browser *self, void *nd, int row)
  53 {
  54         struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
  55         struct map_browser *mb = container_of(self, struct map_browser, b);
  56         bool current_entry = ui_browser__is_current_entry(self, row);
  57         int width;
  58
  59         ui_browser__set_percent_color(self, 0, current_entry);
  60         slsmg_printf("%*llx %*llx %c ",
  61                      mb->addrlen, sym->start, mb->addrlen, sym->end,
  62                      sym->binding == STB_GLOBAL ? 'g' :
  63                      sym->binding == STB_LOCAL  ? 'l' : 'w');
  64         width = self->width - ((mb->addrlen * 2) + 4);
  65         if (width > 0)
  66                 slsmg_write_nstring(sym->name, width);
  67 }
  68
  69 /* FIXME uber-kludgy, see comment on cmd_report... */
  70 static u32 *symbol__browser_index(struct symbol *self)
  71 {
  72         return ((void *)self) - sizeof(struct rb_node) - sizeof(u32);
  73 }
  74
  75 static int map_browser__search(struct map_browser *self)
  76 {
  77         char target[512];
  78         struct symbol *sym;
  79         int err = ui_entry__read("Search by name/addr", target, sizeof(target), 40);
  80
  81         if (err)
  82                 return err;
  83
  84         if (target[0] == '0' && tolower(target[1]) == 'x') {
  85                 u64 addr = strtoull(target, NULL, 16);
  86                 sym = map__find_symbol(self->map, addr, NULL);
  87         } else
  88                 sym = map__find_symbol_by_name(self->map, target, NULL);
  89
  90         if (sym != NULL) {
  91                 u32 *idx = symbol__browser_index(sym);
  92
  93                 self->b.top = &sym->rb_node;
  94                 self->b.index = self->b.top_idx = *idx;
  95         } else
  96                 ui_helpline__fpush("%s not found!", target);
  97
  98         return 0;
  99 }
 100
 101 static int map_browser__run(struct map_browser *self)
 102 {
 103         int key;
 104
 105         if (ui_browser__show(&self->b, self->map->dso->long_name,
 106                              "Press <- or ESC to exit, %s / to search",
 107                              verbose ? "" : "restart with -v to use") < 0)
 108                 return -1;
 109
 110         if (verbose)
 111                 ui_browser__add_exit_key(&self->b, '/');
 112
 113         while (1) {
 114                 key = ui_browser__run(&self->b);
 115
 116                 if (verbose && key == '/')
 117                         map_browser__search(self);
 118                 else
 119                         break;
 120         }
 121
 122         ui_browser__hide(&self->b);
 123         return key;
 124 }
 125
 126 int map__browse(struct map *self)
 127 {
 128         struct map_browser mb = {
 129                 .b = {
 130                         .entries = &self->dso->symbols[self->type],
 131                         .refresh = ui_browser__rb_tree_refresh,
 132                         .seek    = ui_browser__rb_tree_seek,
 133                         .write   = map_browser__write,
 134                 },
 135                 .map = self,
 136         };
 137         struct rb_node *nd;
 138         char tmp[BITS_PER_LONG / 4];
 139         u64 maxaddr = 0;
 140
 141         for (nd = rb_first(mb.b.entries); nd; nd = rb_next(nd)) {
 142                 struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
 143
 144                 if (maxaddr < pos->end)
 145                         maxaddr = pos->end;
 146                 if (verbose) {
 147                         u32 *idx = symbol__browser_index(pos);
 148                         *idx = mb.b.nr_entries;
 149                 }
 150                 ++mb.b.nr_entries;
 151         }
 152
 153         mb.addrlen = snprintf(tmp, sizeof(tmp), "%llx", maxaddr);
 154         return map_browser__run(&mb);
 155 }