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

   1 #include "../libslang.h"
   2 #include <elf.h>
   3 #include <newt.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 0;
  45 }
  46
  47 struct map_browser {
  48         struct ui_browser b;
  49         struct map        *map;
  50         u16               namelen;
  51         u8                addrlen;
  52 };
  53
  54 static void map_browser__write(struct ui_browser *self, void *nd, int row)
  55 {
  56         struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
  57         struct map_browser *mb = container_of(self, struct map_browser, b);
  58         bool current_entry = ui_browser__is_current_entry(self, row);
  59         int color = ui_browser__percent_color(0, current_entry);
  60
  61         SLsmg_set_color(color);
  62         slsmg_printf("%*llx %*llx %c ",
  63                      mb->addrlen, sym->start, mb->addrlen, sym->end,
  64                      sym->binding == STB_GLOBAL ? 'g' :
  65                      sym->binding == STB_LOCAL  ? 'l' : 'w');
  66         slsmg_write_nstring(sym->name, mb->namelen);
  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, struct newtExitStruct *es)
 102 {
 103         if (ui_browser__show(&self->b, self->map->dso->long_name,
 104                              "Press <- or ESC to exit, %s / to search",
 105                              verbose ? "" : "restart with -v to use") < 0)
 106                 return -1;
 107
 108         newtFormAddHotKey(self->b.form, NEWT_KEY_LEFT);
 109         newtFormAddHotKey(self->b.form, NEWT_KEY_ENTER);
 110         if (verbose)
 111                 newtFormAddHotKey(self->b.form, '/');
 112
 113         while (1) {
 114                 ui_browser__run(&self->b, es);
 115
 116                 if (es->reason != NEWT_EXIT_HOTKEY)
 117                         break;
 118                 if (verbose && es->u.key == '/')
 119                         map_browser__search(self);
 120                 else
 121                         break;
 122         }
 123
 124         ui_browser__hide(&self->b);
 125         return 0;
 126 }
 127
 128 int map__browse(struct map *self)
 129 {
 130         struct map_browser mb = {
 131                 .b = {
 132                         .entries = &self->dso->symbols[self->type],
 133                         .refresh = ui_browser__rb_tree_refresh,
 134                         .seek    = ui_browser__rb_tree_seek,
 135                         .write   = map_browser__write,
 136                 },
 137                 .map = self,
 138         };
 139         struct newtExitStruct es;
 140         struct rb_node *nd;
 141         char tmp[BITS_PER_LONG / 4];
 142         u64 maxaddr = 0;
 143
 144         for (nd = rb_first(mb.b.entries); nd; nd = rb_next(nd)) {
 145                 struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
 146
 147                 if (mb.namelen < pos->namelen)
 148                         mb.namelen = pos->namelen;
 149                 if (maxaddr < pos->end)
 150                         maxaddr = pos->end;
 151                 if (verbose) {
 152                         u32 *idx = symbol__browser_index(pos);
 153                         *idx = mb.b.nr_entries;
 154                 }
 155                 ++mb.b.nr_entries;
 156         }
 157
 158         mb.addrlen = snprintf(tmp, sizeof(tmp), "%llx", maxaddr);
 159         mb.b.width += mb.addrlen * 2 + 4 + mb.namelen;
 160         return map_browser__run(&mb, &es);
 161 }