tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2
3#include <inttypes.h>
4#include <stdio.h>
5#include <string.h>
6#include "debug.h"
7#include "symbol.h"
8
9/* On arm64, kernel text segment starts at high memory address,
10 * for example 0xffff 0000 8xxx xxxx. Modules start at a low memory
11 * address, like 0xffff 0000 00ax xxxx. When only small amount of
12 * memory is used by modules, gap between end of module's text segment
13 * and start of kernel text segment may reach 2G.
14 * Therefore do not fill this gap and do not assign it to the kernel dso map.
15 */
16
17#define SYMBOL_LIMIT (1 << 12) /* 4K */
18
19void arch__symbols__fixup_end(struct symbol *p, struct symbol *c)
20{
21 if ((strchr(p->name, '[') && strchr(c->name, '[') == NULL) ||
22 (strchr(p->name, '[') == NULL && strchr(c->name, '[')))
23 /* Limit range of last symbol in module and kernel */
24 p->end += SYMBOL_LIMIT;
25 else
26 p->end = c->start;
27 pr_debug4("%s sym:%s end:%#" PRIx64 "\n", __func__, p->name, p->end);
28}