1 /* Machine-dependent ELF indirect relocation inline functions. 2 PowerPC64 version. 3 Copyright (C) 2009-2022 Free Software Foundation, Inc. 4 This file is part of the GNU C Library. 5 6 The GNU C Library is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Lesser General Public 8 License as published by the Free Software Foundation; either 9 version 2.1 of the License, or (at your option) any later version. 10 11 The GNU C Library is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with the GNU C Library; if not, see 18 <https://www.gnu.org/licenses/>. */ 19 20 #ifndef _DL_IREL_H 21 #define _DL_IREL_H 22 23 #include <stdio.h> 24 #include <unistd.h> 25 #include <ldsodefs.h> 26 #include <dl-funcdesc.h> 27 28 #define ELF_MACHINE_IRELA 1 29 Elf64_Addr(always_inline)30static inline Elf64_Addr 31 __attribute ((always_inline)) 32 elf_ifunc_invoke (Elf64_Addr addr) 33 { 34 return ((Elf64_Addr (*) (unsigned long int)) (addr)) (GLRO(dl_hwcap)); 35 } 36 37 static inline void 38 __attribute ((always_inline)) elf_irela(const Elf64_Rela * reloc)39elf_irela (const Elf64_Rela *reloc) 40 { 41 unsigned int r_type = ELF64_R_TYPE (reloc->r_info); 42 43 if (__glibc_likely (r_type == R_PPC64_IRELATIVE)) 44 { 45 Elf64_Addr *const reloc_addr = (void *) reloc->r_offset; 46 Elf64_Addr value = elf_ifunc_invoke(reloc->r_addend); 47 *reloc_addr = value; 48 } 49 else if (__glibc_likely (r_type == R_PPC64_JMP_IREL)) 50 { 51 Elf64_Addr *const reloc_addr = (void *) reloc->r_offset; 52 Elf64_Addr value = elf_ifunc_invoke(reloc->r_addend); 53 #if _CALL_ELF != 2 54 *(Elf64_FuncDesc *) reloc_addr = *(Elf64_FuncDesc *) value; 55 #else 56 *reloc_addr = value; 57 #endif 58 } 59 else 60 __libc_fatal ("Unexpected reloc type in static binary.\n"); 61 } 62 63 #endif /* dl-irel.h */ 64