tools/perf/ui/browsers/map.c

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