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- #include <efi.h>
- #include <efilib.h>
- #include <elf.h>
- EFI_STATUS _relocate (long ldbase, Elf64_Dyn *dyn,
- EFI_HANDLE image EFI_UNUSED,
- EFI_SYSTEM_TABLE *systab EFI_UNUSED)
- {
- long relsz = 0, relent = 0;
- Elf64_Rela *rel = 0;
- unsigned long *addr;
- int i;
- for (i = 0; dyn[i].d_tag != DT_NULL; ++i) {
- switch (dyn[i].d_tag) {
- case DT_RELA:
- rel = (Elf64_Rela*)
- ((unsigned long)dyn[i].d_un.d_ptr
- + ldbase);
- break;
- case DT_RELASZ:
- relsz = dyn[i].d_un.d_val;
- break;
- case DT_RELAENT:
- relent = dyn[i].d_un.d_val;
- break;
- case DT_PLTGOT:
- addr = (unsigned long *)
- ((unsigned long)dyn[i].d_un.d_ptr
- + ldbase);
- break;
- default:
- break;
- }
- }
- if (!rel && relent == 0)
- return EFI_SUCCESS;
- if (!rel || relent == 0)
- return EFI_LOAD_ERROR;
- while (relsz > 0) {
-
- switch (ELF64_R_TYPE (rel->r_info)) {
- case R_LARCH_NONE:
- break;
- case R_LARCH_RELATIVE:
- addr = (unsigned long *)
- (ldbase + rel->r_offset);
- *addr += ldbase;
- break;
- default:
- break;
- }
- rel = (Elf64_Rela*) ((char *) rel + relent);
- relsz -= relent;
- }
- return EFI_SUCCESS;
- }
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