1 /* s390 ABI-specified defaults for DWARF CFI. 2 Copyright (C) 2012, 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 #include <dwarf.h> 34 35 #define BACKEND s390_ 36 #include "libebl_CPU.h" 37 38 int 39 s390_abi_cfi (Ebl *ebl, Dwarf_CIE *abi_info) 40 { 41 static const uint8_t abi_cfi[] = 42 { 43 /* This instruction is provided in every CIE. It is not repeated here: 44 DW_CFA_def_cfa, ULEB128_7 (15), ULEB128_7 (96) */ 45 /* r14 is not callee-saved but it needs to be preserved as it is pre-set 46 by the caller. */ 47 DW_CFA_same_value, ULEB128_7 (14), /* r14 */ 48 49 /* Callee-saved regs. */ 50 #define SV(n) DW_CFA_same_value, ULEB128_7 (n) 51 SV (6), SV (7), SV (8), SV (9), SV (10), /* r6-r13, r15 */ 52 SV (11), SV (12), SV (13), SV (15), 53 SV (16 + 8), SV (16 + 9), SV (16 + 10), SV (16 + 11), /* f8-f15 */ 54 SV (16 + 12), SV (16 + 13), SV (16 + 14), SV (16 + 15) 55 #undef SV 56 }; 57 58 abi_info->initial_instructions = abi_cfi; 59 abi_info->initial_instructions_end = &abi_cfi[sizeof abi_cfi]; 60 abi_info->data_alignment_factor = ebl->class == ELFCLASS64 ? 8 : 4; 61 62 abi_info->return_address_register = 14; 63 64 return 0; 65 } 66
