FM / mod

/usr/src/linux-headers-5.15.0-181/scripts/mod/

/usr/src/linux-headers-5.15.0-181/scripts/mod

Name	Size	Mode	Actions
.gitignore	99	0644	edit dl rm
devicetable-offsets.c	7482	0644	edit dl rm
empty.c	54	0644	edit dl rm
file2alias.c	45996	0644	edit dl rm
Makefile	861	0644	edit dl rm
mk_elfconfig.c	1269	0644	edit dl rm
modpost.c	67199	0644	edit dl rm
modpost.h	5723	0644	edit dl rm
sumversion.c	9885	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/scripts/mod/mk_elfconfig.c (1269B)

// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <elf.h>

int
main(int argc, char **argv)
{
	unsigned char ei[EI_NIDENT];
	union { short s; char c[2]; } endian_test;

if (fread(ei, 1, EI_NIDENT, stdin) != EI_NIDENT) {
		fprintf(stderr, "Error: input truncated\n");
		return 1;
	}
	if (memcmp(ei, ELFMAG, SELFMAG) != 0) {
		fprintf(stderr, "Error: not ELF\n");
		return 1;
	}
	switch (ei[EI_CLASS]) {
	case ELFCLASS32:
		printf("#define KERNEL_ELFCLASS ELFCLASS32\n");
		break;
	case ELFCLASS64:
		printf("#define KERNEL_ELFCLASS ELFCLASS64\n");
		break;
	default:
		exit(1);
	}
	switch (ei[EI_DATA]) {
	case ELFDATA2LSB:
		printf("#define KERNEL_ELFDATA ELFDATA2LSB\n");
		break;
	case ELFDATA2MSB:
		printf("#define KERNEL_ELFDATA ELFDATA2MSB\n");
		break;
	default:
		exit(1);
	}

if (sizeof(unsigned long) == 4) {
		printf("#define HOST_ELFCLASS ELFCLASS32\n");
	} else if (sizeof(unsigned long) == 8) {
		printf("#define HOST_ELFCLASS ELFCLASS64\n");
	}

endian_test.s = 0x0102;
	if (memcmp(endian_test.c, "\x01\x02", 2) == 0)
		printf("#define HOST_ELFDATA ELFDATA2MSB\n");
	else if (memcmp(endian_test.c, "\x02\x01", 2) == 0)
		printf("#define HOST_ELFDATA ELFDATA2LSB\n");
	else
		exit(1);

return 0;
}

// SPDX-License-Identifier: GPL-2.0 #include #include #include #include int main(int argc, char **argv) { unsigned char ei[EI_NIDENT]; union { short s; char c[2]; } endian_test; if (fread(ei, 1, EI_NIDENT, stdin) != EI_NIDENT) { fprintf(stderr, "Error: input truncated\n"); return 1; } if (memcmp(ei, ELFMAG, SELFMAG) != 0) { fprintf(stderr, "Error: not ELF\n"); return 1; } switch (ei[EI_CLASS]) { case ELFCLASS32: printf("#define KERNEL_ELFCLASS ELFCLASS32\n"); break; case ELFCLASS64: printf("#define KERNEL_ELFCLASS ELFCLASS64\n"); break; default: exit(1); } switch (ei[EI_DATA]) { case ELFDATA2LSB: printf("#define KERNEL_ELFDATA ELFDATA2LSB\n"); break; case ELFDATA2MSB: printf("#define KERNEL_ELFDATA ELFDATA2MSB\n"); break; default: exit(1); } if (sizeof(unsigned long) == 4) { printf("#define HOST_ELFCLASS ELFCLASS32\n"); } else if (sizeof(unsigned long) == 8) { printf("#define HOST_ELFCLASS ELFCLASS64\n"); } endian_test.s = 0x0102; if (memcmp(endian_test.c, "\x01\x02", 2) == 0) printf("#define HOST_ELFDATA ELFDATA2MSB\n"); else if (memcmp(endian_test.c, "\x02\x01", 2) == 0) printf("#define HOST_ELFDATA ELFDATA2LSB\n"); else exit(1); return 0; }