// SPDX-License-Identifier: GPL-2.0-only#ifndef _GNU_SOURCE#define _GNU_SOURCE#endif#include <link.h>#include <stdio.h>#include <stdlib.h> struct Statistics {	unsigned long long load_address;	unsigned long long alignment;}; int ExtractStatistics(struct dl_phdr_info *info, size_t size, void *data){	struct Statistics *stats = (struct Statistics *) data;	int i; 	if (info->dlpi_name != NULL && info->dlpi_name[0] != '\0') {		// Ignore headers from other than the executable.		return 2;	} 	stats->load_address = (unsigned long long) info->dlpi_addr;	stats->alignment = 0; 	for (i = 0; i < info->dlpi_phnum; i++) {		if (info->dlpi_phdr[i].p_type != PT_LOAD)			continue; 		if (info->dlpi_phdr[i].p_align > stats->alignment)			stats->alignment = info->dlpi_phdr[i].p_align;	} 	return 1;  // Terminate dl_iterate_phdr.} int main(int argc, char **argv){	struct Statistics extracted;	unsigned long long misalign;	int ret; 	ret = dl_iterate_phdr(ExtractStatistics, &extracted);	if (ret != 1) {		fprintf(stderr, "FAILED\n");		return 1;	} 	if (extracted.alignment == 0) {		fprintf(stderr, "No alignment found\n");		return 1;	} else if (extracted.alignment & (extracted.alignment - 1)) {		fprintf(stderr, "Alignment is not a power of 2\n");		return 1;	} 	misalign = extracted.load_address & (extracted.alignment - 1);	if (misalign) {		printf("alignment = %llu, load_address = %llu\n",			extracted.alignment, extracted.load_address);		fprintf(stderr, "FAILED\n");		return 1;	} 	fprintf(stderr, "PASS\n");	return 0;}