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

   1 #include "../libslang.h"
   2 #include <elf.h>
   3 #include <inttypes.h>
   4 #include <sys/ttydefaults.h>
   5 #include <ctype.h>
   6 #include <string.h>
   7 #include <linux/bitops.h>
   8 #include "../../debug.h"
   9 #include "../../symbol.h"
  10 #include "../browser.h"
  11 #include "../helpline.h"
  12 #include "map.h"
  13
  14 static int ui_entry__read(const char *title, char *bf, size_t size, int width)
  15 {
  16         struct newtExitStruct es;
  17         newtComponent form, entry;
  18         const char *result;
  19         int err = -1;
  20
  21         newtCenteredWindow(width, 1, title);
  22         form = newtForm(NULL, NULL, 0);
  23         if (form == NULL)
  24                 return -1;
  25
  26         entry = newtEntry(0, 0, "0x", width, &result, NEWT_FLAG_SCROLL);
  27         if (entry == NULL)
  28                 goto out_free_form;
  29
  30         newtFormAddComponent(form, entry);
  31         newtFormAddHotKey(form, NEWT_KEY_ENTER);
  32         newtFormAddHotKey(form, NEWT_KEY_ESCAPE);
  33         newtFormAddHotKey(form, NEWT_KEY_LEFT);
  34         newtFormAddHotKey(form, CTRL('c'));
  35         newtFormRun(form, &es);
  36
  37         if (result != NULL) {
  38                 strncpy(bf, result, size);
  39                 err = 0;
  40         }
  41 out_free_form:
  42         newtPopWindow();
  43         newtFormDestroy(form);
  44         return err;
  45 }
  46
  47 struct map_browser {
  48         struct ui_browser b;
  49         struct map        *map;
  50         u8                addrlen;
  51 };
  52
  53 static void map_browser__write(struct ui_browser *self, void *nd, int row)
  54 {
  55         struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
  56         struct map_browser *mb = container_of(self, struct map_browser, b);
  57         bool current_entry = ui_browser__is_current_entry(self, row);
  58         int width;
  59
  60         ui_browser__set_percent_color(self, 0, current_entry);
  61         slsmg_printf("%*" PRIx64 " %*" PRIx64 " %c ",
  62                      mb->addrlen, sym->start, mb->addrlen, sym->end,
  63                      sym->binding == STB_GLOBAL ? 'g' :
  64                      sym->binding == STB_LOCAL  ? 'l' : 'w');
  65         width = self->width - ((mb->addrlen * 2) + 4);
  66         if (width > 0)
  67                 slsmg_write_nstring(sym->name, width);
  68 }
  69
  70 /* FIXME uber-kludgy, see comment on cmd_report... */
  71 static u32 *symbol__browser_index(struct symbol *self)
  72 {
  73         return ((void *)self) - sizeof(struct rb_node) - sizeof(u32);
  74 }
  75
  76 static int map_browser__search(struct map_browser *self)
  77 {
  78         char target[512];
  79         struct symbol *sym;
  80         int err = ui_entry__read("Search by name/addr", target, sizeof(target), 40);
  81
  82         if (err)
  83                 return err;
  84
  85         if (target[0] == '0' && tolower(target[1]) == 'x') {
  86                 u64 addr = strtoull(target, NULL, 16);
  87                 sym = map__find_symbol(self->map, addr, NULL);
  88         } else
  89                 sym = map__find_symbol_by_name(self->map, target, NULL);
  90
  91         if (sym != NULL) {
  92                 u32 *idx = symbol__browser_index(sym);
  93
  94                 self->b.top = &sym->rb_node;
  95                 self->b.index = self->b.top_idx = *idx;
  96         } else
  97                 ui_helpline__fpush("%s not found!", target);
  98
  99         return 0;
 100 }
 101
 102 static int map_browser__run(struct map_browser *self)
 103 {
 104         int key;
 105
 106         if (ui_browser__show(&self->b, self->map->dso->long_name,
 107                              "Press <- or ESC to exit, %s / to search",
 108                              verbose ? "" : "restart with -v to use") < 0)
 109                 return -1;
 110
 111         if (verbose)
 112                 ui_browser__add_exit_key(&self->b, '/');
 113
 114         while (1) {
 115                 key = ui_browser__run(&self->b);
 116
 117                 if (verbose && key == '/')
 118                         map_browser__search(self);
 119                 else
 120                         break;
 121         }
 122
 123         ui_browser__hide(&self->b);
 124         return key;
 125 }
 126
 127 int map__browse(struct map *self)
 128 {
 129         struct map_browser mb = {
 130                 .b = {
 131                         .entries = &self->dso->symbols[self->type],
 132                         .refresh = ui_browser__rb_tree_refresh,
 133                         .seek    = ui_browser__rb_tree_seek,
 134                         .write   = map_browser__write,
 135                 },
 136                 .map = self,
 137         };
 138         struct rb_node *nd;
 139         char tmp[BITS_PER_LONG / 4];
 140         u64 maxaddr = 0;
 141
 142         for (nd = rb_first(mb.b.entries); nd; nd = rb_next(nd)) {
 143                 struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
 144
 145                 if (maxaddr < pos->end)
 146                         maxaddr = pos->end;
 147                 if (verbose) {
 148                         u32 *idx = symbol__browser_index(pos);
 149                         *idx = mb.b.nr_entries;
 150                 }
 151                 ++mb.b.nr_entries;
 152         }
 153
 154         mb.addrlen = snprintf(tmp, sizeof(tmp), "%" PRIx64, maxaddr);
 155         return map_browser__run(&mb);
 156 }