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69 lines
2.1 KiB
69 lines
2.1 KiB
4 months ago
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/* i386 ABI-specified defaults for DWARF CFI.
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Copyright (C) 2009 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 i386_
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#include "libebl_CPU.h"
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int
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i386_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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/* Call-saved regs. */
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DW_CFA_same_value, ULEB128_7 (3), /* %ebx */
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DW_CFA_same_value, ULEB128_7 (5), /* %ebp */
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DW_CFA_same_value, ULEB128_7 (6), /* %esi */
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DW_CFA_same_value, ULEB128_7 (7), /* %edi */
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/* The CFA is the SP. */
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DW_CFA_val_offset, ULEB128_7 (4), ULEB128_7 (0),
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/* Segment registers are call-saved if ever used at all. */
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DW_CFA_same_value, ULEB128_7 (40), /* %es */
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DW_CFA_same_value, ULEB128_7 (41), /* %cs */
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DW_CFA_same_value, ULEB128_7 (42), /* %ss */
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DW_CFA_same_value, ULEB128_7 (43), /* %ds */
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DW_CFA_same_value, ULEB128_7 (44), /* %fs */
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DW_CFA_same_value, ULEB128_7 (45), /* %gs */
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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 = 4;
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abi_info->return_address_register = 8; /* %eip */
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return 0;
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}
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