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1// SPDX-License-Identifier: GPL-2.02#include <inttypes.h>3#include <unistd.h>4#include <stdio.h>5#include <string.h>6#include <internal/lib.h> // page_size7#include "machine.h"8#include "api/fs/fs.h"9#include "debug.h"10#include "symbol.h"11 12int arch__fix_module_text_start(u64 *start, u64 *size, const char *name)13{14 u64 m_start = *start;15 char path[PATH_MAX];16 17 snprintf(path, PATH_MAX, "module/%.*s/sections/.text",18 (int)strlen(name) - 2, name + 1);19 if (sysfs__read_ull(path, (unsigned long long *)start) < 0) {20 pr_debug2("Using module %s start:%#lx\n", path, m_start);21 *start = m_start;22 } else {23 /* Successful read of the modules segment text start address.24 * Calculate difference between module start address25 * in memory and module text segment start address.26 * For example module load address is 0x3ff8011b00027 * (from /proc/modules) and module text segment start28 * address is 0x3ff8011b870 (from file above).29 *30 * Adjust the module size and subtract the GOT table31 * size located at the beginning of the module.32 */33 *size -= (*start - m_start);34 }35 36 return 0;37}38