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66 lines
2.1 KiB
66 lines
2.1 KiB
4 months ago
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/* s390 ABI-specified defaults for DWARF CFI.
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Copyright (C) 2012, 2013 Red Hat, Inc.
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This file is part of elfutils.
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This file is free software; you can redistribute it and/or modify
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it under the terms of either
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at
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your option) any later version
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at
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your option) any later version
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or both in parallel, as here.
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elfutils is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see <http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <dwarf.h>
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#define BACKEND s390_
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#include "libebl_CPU.h"
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int
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s390_abi_cfi (Ebl *ebl, Dwarf_CIE *abi_info)
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{
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static const uint8_t abi_cfi[] =
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{
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/* This instruction is provided in every CIE. It is not repeated here:
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DW_CFA_def_cfa, ULEB128_7 (15), ULEB128_7 (96) */
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/* r14 is not callee-saved but it needs to be preserved as it is pre-set
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by the caller. */
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DW_CFA_same_value, ULEB128_7 (14), /* r14 */
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/* Callee-saved regs. */
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#define SV(n) DW_CFA_same_value, ULEB128_7 (n)
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SV (6), SV (7), SV (8), SV (9), SV (10), /* r6-r13, r15 */
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SV (11), SV (12), SV (13), SV (15),
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SV (16 + 8), SV (16 + 9), SV (16 + 10), SV (16 + 11), /* f8-f15 */
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SV (16 + 12), SV (16 + 13), SV (16 + 14), SV (16 + 15)
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#undef SV
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};
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abi_info->initial_instructions = abi_cfi;
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abi_info->initial_instructions_end = &abi_cfi[sizeof abi_cfi];
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abi_info->data_alignment_factor = ebl->class == ELFCLASS64 ? 8 : 4;
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abi_info->return_address_register = 14;
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return 0;
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}
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