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78 lines
2.6 KiB
78 lines
2.6 KiB
/* ppc 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 ppc_
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#include "libebl_CPU.h"
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int
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ppc_abi_cfi (Ebl *ebl __attribute__ ((unused)), 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 (1), ULEB128_7 (0) */
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/* r1 is assumed to be restored from cfa address,
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r1 acts as a stack frame pointer. */
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DW_CFA_val_offset, ULEB128_7 (1), ULEB128_7 (0),
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/* lr 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 (65), /* lr */
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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 (2), /* r2 is TOC pointer. */
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SV (13), /* Reserved as system thread id (is it for CFI?). */
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/* r14-r31 are non-volatile registers. */
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SV (14), SV (15), SV (16), SV (17), SV (18), SV (19), SV (20), SV (21),
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SV (22), SV (23), SV (24), SV (25), SV (26), SV (27), SV (28), SV (29),
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SV (30), SV (31)
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/* VMX registers v20-v31 and vrsave are non-volatile but they are
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assigned DWARF registers 1144-1156 (v20-v31) which is outside of the
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CFI supported range. */
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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 = 65;
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return 0;
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}
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__typeof (ppc_abi_cfi)
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ppc64_abi_cfi
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__attribute__ ((alias ("ppc_abi_cfi")));
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