1 /* Initialization of S/390 specific backend library. 2 Copyright (C) 2005, 2006, 2013 Red Hat, Inc. 3 This file is part of elfutils. 4 5 This file is free software; you can redistribute it and/or modify 6 it under the terms of either 7 8 * the GNU Lesser General Public License as published by the Free 9 Software Foundation; either version 3 of the License, or (at 10 your option) any later version 11 12 or 13 14 * the GNU General Public License as published by the Free 15 Software Foundation; either version 2 of the License, or (at 16 your option) any later version 17 18 or both in parallel, as here. 19 20 elfutils is distributed in the hope that it will be useful, but 21 WITHOUT ANY WARRANTY; without even the implied warranty of 22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 23 General Public License for more details. 24 25 You should have received copies of the GNU General Public License and 26 the GNU Lesser General Public License along with this program. If 27 not, see <http://www.gnu.org/licenses/>. */ 28 29 #ifdef HAVE_CONFIG_H 30 # include <config.h> 31 #endif 32 33 #define BACKEND s390_ 34 #define RELOC_PREFIX R_390_ 35 #include "libebl_CPU.h" 36 37 /* This defines the common reloc hooks based on arm_reloc.def. */ 38 #include "common-reloc.c" 39 40 extern __typeof (s390_core_note) s390x_core_note; 41 42 43 const char * 44 s390_init (Elf *elf __attribute__ ((unused)), 45 GElf_Half machine __attribute__ ((unused)), 46 Ebl *eh, 47 size_t ehlen) 48 { 49 /* Check whether the Elf_BH object has a sufficent size. */ 50 if (ehlen < sizeof (Ebl)) 51 return NULL; 52 53 /* We handle it. */ 54 eh->name = "IBM S/390"; 55 s390_init_reloc (eh); 56 HOOK (eh, reloc_simple_type); 57 HOOK (eh, register_info); 58 HOOK (eh, return_value_location); 59 if (eh->class == ELFCLASS64) 60 eh->core_note = s390x_core_note; 61 else 62 HOOK (eh, core_note); 63 HOOK (eh, abi_cfi); 64 /* gcc/config/ #define DWARF_FRAME_REGISTERS 34. 65 But from the gcc/config/s390/s390.h "Register usage." comment it looks as 66 if #32 (Argument pointer) and #33 (Condition code) are not used for 67 unwinding. */ 68 eh->frame_nregs = 32; 69 HOOK (eh, set_initial_registers_tid); 70 if (eh->class == ELFCLASS32) 71 HOOK (eh, normalize_pc); 72 HOOK (eh, unwind); 73 74 /* Only the 64-bit format uses the incorrect hash table entry size. */ 75 if (eh->class == ELFCLASS64) 76 eh->sysvhash_entrysize = sizeof (Elf64_Xword); 77 78 return MODVERSION; 79 } 80
