cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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map.c (3374B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include <elf.h>
      3#include <inttypes.h>
      4#include <sys/ttydefaults.h>
      5#include <stdlib.h>
      6#include <string.h>
      7#include <linux/bitops.h>
      8#include "../../util/debug.h"
      9#include "../../util/map.h"
     10#include "../../util/dso.h"
     11#include "../../util/symbol.h"
     12#include "../browser.h"
     13#include "../helpline.h"
     14#include "../keysyms.h"
     15#include "map.h"
     16
     17#include <linux/ctype.h>
     18
     19struct map_browser {
     20	struct ui_browser b;
     21	struct map	  *map;
     22	u8		  addrlen;
     23};
     24
     25static void map_browser__write(struct ui_browser *browser, void *nd, int row)
     26{
     27	struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
     28	struct map_browser *mb = container_of(browser, struct map_browser, b);
     29	bool current_entry = ui_browser__is_current_entry(browser, row);
     30	int width;
     31
     32	ui_browser__set_percent_color(browser, 0, current_entry);
     33	ui_browser__printf(browser, "%*" PRIx64 " %*" PRIx64 " %c ",
     34			   mb->addrlen, sym->start, mb->addrlen, sym->end,
     35			   sym->binding == STB_GLOBAL ? 'g' :
     36				sym->binding == STB_LOCAL  ? 'l' : 'w');
     37	width = browser->width - ((mb->addrlen * 2) + 4);
     38	if (width > 0)
     39		ui_browser__write_nstring(browser, sym->name, width);
     40}
     41
     42/* FIXME uber-kludgy, see comment on cmd_report... */
     43static u32 *symbol__browser_index(struct symbol *browser)
     44{
     45	return ((void *)browser) - sizeof(struct rb_node) - sizeof(u32);
     46}
     47
     48static int map_browser__search(struct map_browser *browser)
     49{
     50	char target[512];
     51	struct symbol *sym;
     52	int err = ui_browser__input_window("Search by name/addr",
     53					   "Prefix with 0x to search by address",
     54					   target, "ENTER: OK, ESC: Cancel", 0);
     55	if (err != K_ENTER)
     56		return -1;
     57
     58	if (target[0] == '0' && tolower(target[1]) == 'x') {
     59		u64 addr = strtoull(target, NULL, 16);
     60		sym = map__find_symbol(browser->map, addr);
     61	} else
     62		sym = map__find_symbol_by_name(browser->map, target);
     63
     64	if (sym != NULL) {
     65		u32 *idx = symbol__browser_index(sym);
     66
     67		browser->b.top = &sym->rb_node;
     68		browser->b.index = browser->b.top_idx = *idx;
     69	} else
     70		ui_helpline__fpush("%s not found!", target);
     71
     72	return 0;
     73}
     74
     75static int map_browser__run(struct map_browser *browser)
     76{
     77	int key;
     78
     79	if (ui_browser__show(&browser->b, browser->map->dso->long_name,
     80			     "Press ESC to exit, %s / to search",
     81			     verbose > 0 ? "" : "restart with -v to use") < 0)
     82		return -1;
     83
     84	while (1) {
     85		key = ui_browser__run(&browser->b, 0);
     86
     87		switch (key) {
     88		case '/':
     89			if (verbose > 0)
     90				map_browser__search(browser);
     91		default:
     92			break;
     93                case K_LEFT:
     94                case K_ESC:
     95                case 'q':
     96                case CTRL('c'):
     97                        goto out;
     98		}
     99	}
    100out:
    101	ui_browser__hide(&browser->b);
    102	return key;
    103}
    104
    105int map__browse(struct map *map)
    106{
    107	struct map_browser mb = {
    108		.b = {
    109			.entries = &map->dso->symbols,
    110			.refresh = ui_browser__rb_tree_refresh,
    111			.seek	 = ui_browser__rb_tree_seek,
    112			.write	 = map_browser__write,
    113		},
    114		.map = map,
    115	};
    116	struct rb_node *nd;
    117	char tmp[BITS_PER_LONG / 4];
    118	u64 maxaddr = 0;
    119
    120	for (nd = rb_first(mb.b.entries); nd; nd = rb_next(nd)) {
    121		struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
    122
    123		if (maxaddr < pos->end)
    124			maxaddr = pos->end;
    125		if (verbose > 0) {
    126			u32 *idx = symbol__browser_index(pos);
    127			*idx = mb.b.nr_entries;
    128		}
    129		++mb.b.nr_entries;
    130	}
    131
    132	mb.addrlen = snprintf(tmp, sizeof(tmp), "%" PRIx64, maxaddr);
    133	return map_browser__run(&mb);
    134}