123 lines
3.5 KiB
C
123 lines
3.5 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <grub/elf.h>
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#include <grub/module_verifier.h>
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#include <grub/misc.h>
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#include <grub/util/misc.h>
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struct grub_module_verifier_arch archs[] = {
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{ "i386", 4, 0, EM_386, GRUB_MODULE_VERIFY_SUPPORTS_REL, (int[]){
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R_386_32,
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R_386_PC32,
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-1
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} },
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{ "x86_64", 8, 0, EM_X86_64, GRUB_MODULE_VERIFY_SUPPORTS_RELA, (int[]){
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R_X86_64_64,
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R_X86_64_PC64,
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/* R_X86_64_32, R_X86_64_32S, R_X86_64_PC32 are supported but shouldn't be used because of their limited range. */
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-1
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} },
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{ "powerpc", 4, 1, EM_PPC, GRUB_MODULE_VERIFY_SUPPORTS_RELA, (int[]){
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GRUB_ELF_R_PPC_ADDR16_LO,
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GRUB_ELF_R_PPC_REL24, /* It has limited range but GRUB adds trampolines when necessarry. */
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GRUB_ELF_R_PPC_ADDR16_HA,
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GRUB_ELF_R_PPC_ADDR32,
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GRUB_ELF_R_PPC_REL32,
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-1
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} },
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{ "sparc64", 8, 1, EM_SPARCV9, GRUB_MODULE_VERIFY_SUPPORTS_RELA, (int[]){
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R_SPARC_WDISP30, /* It has limited range but GRUB adds trampolines when necessarry. */
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R_SPARC_HH22,
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R_SPARC_HM10,
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R_SPARC_LM22,
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R_SPARC_LO10,
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R_SPARC_64,
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R_SPARC_OLO10,
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/* R_SPARC_32, R_SPARC_HI22 are supported but shouldn't be used because of their limited range. */
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-1
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} },
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{ "ia64", 8, 0, EM_IA_64, GRUB_MODULE_VERIFY_SUPPORTS_RELA, (int[]){
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R_IA64_PCREL21B, /* We should verify that it's pointing either
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to a function or to a section in the same module. */
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R_IA64_SEGREL64LSB,
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R_IA64_FPTR64LSB,
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R_IA64_DIR64LSB,
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R_IA64_PCREL64LSB,
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R_IA64_GPREL22, /* We should verify that it's pointing to a section in the same module. */
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R_IA64_LTOFF22X,
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R_IA64_LTOFF22,
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R_IA64_LTOFF_FPTR22,
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R_IA64_LDXMOV,
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-1
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} },
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{ "mipsel", 4, 0, EM_MIPS, GRUB_MODULE_VERIFY_SUPPORTS_REL | GRUB_MODULE_VERIFY_SUPPORTS_RELA, (int[]){
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R_MIPS_HI16,
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R_MIPS_LO16,
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R_MIPS_32,
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R_MIPS_GPREL32,
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R_MIPS_26,
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R_MIPS_GOT16,
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R_MIPS_CALL16,
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R_MIPS_JALR,
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-1
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} },
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{ "mips", 4, 1, EM_MIPS, GRUB_MODULE_VERIFY_SUPPORTS_REL | GRUB_MODULE_VERIFY_SUPPORTS_RELA, (int[]){
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R_MIPS_HI16,
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R_MIPS_LO16,
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R_MIPS_32,
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R_MIPS_GPREL32,
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R_MIPS_26,
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R_MIPS_GOT16,
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R_MIPS_CALL16,
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R_MIPS_JALR,
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-1
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} },
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{ "arm", 4, 0, EM_ARM, GRUB_MODULE_VERIFY_SUPPORTS_REL, (int[]){
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/* Some relocations are range-limited but trampolines are added when necessarry. */
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R_ARM_ABS32,
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R_ARM_CALL,
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R_ARM_JUMP24,
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R_ARM_THM_CALL,
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R_ARM_THM_JUMP24,
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R_ARM_V4BX,
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R_ARM_THM_MOVW_ABS_NC,
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R_ARM_THM_MOVT_ABS,
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R_ARM_THM_JUMP19,
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-1
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} },
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{ "arm64", 8, 0, EM_AARCH64, GRUB_MODULE_VERIFY_SUPPORTS_REL | GRUB_MODULE_VERIFY_SUPPORTS_RELA, (int[]){
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R_AARCH64_ABS64,
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R_AARCH64_CALL26,
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R_AARCH64_JUMP26,
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-1
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} },
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};
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int
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main (int argc, char **argv)
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{
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size_t module_size;
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unsigned arch;
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char *module_img;
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if (argc != 3) {
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fprintf (stderr, "usage: %s FILE ARCH\n", argv[0]);
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return 1;
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}
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for (arch = 0; arch < ARRAY_SIZE(archs); arch++)
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if (strcmp(archs[arch].name, argv[2]) == 0)
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break;
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if (arch == ARRAY_SIZE(archs))
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grub_util_error("unknown arch: %s", argv[2]);
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module_size = grub_util_get_image_size (argv[1]);
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module_img = grub_util_read_image (argv[1]);
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if (archs[arch].voidp_sizeof == 8)
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grub_module_verify64(module_img, module_size, &archs[arch]);
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else
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grub_module_verify32(module_img, module_size, &archs[arch]);
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return 0;
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}
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