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1 : : /* i386 ABI-specified defaults for DWARF CFI. 2 : : Copyright (C) 2009 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 i386_ 36 : : #include "libebl_CPU.h" 37 : : 38 : : int 39 : 40 : i386_abi_cfi (Ebl *ebl __attribute__ ((unused)), Dwarf_CIE *abi_info) 40 : : { 41 : 40 : static const uint8_t abi_cfi[] = 42 : : { 43 : : /* Call-saved regs. */ 44 : : DW_CFA_same_value, ULEB128_7 (3), /* %ebx */ 45 : : DW_CFA_same_value, ULEB128_7 (5), /* %ebp */ 46 : : DW_CFA_same_value, ULEB128_7 (6), /* %esi */ 47 : : DW_CFA_same_value, ULEB128_7 (7), /* %edi */ 48 : : 49 : : /* The CFA is the SP. */ 50 : : DW_CFA_val_offset, ULEB128_7 (4), ULEB128_7 (0), 51 : : 52 : : /* Segment registers are call-saved if ever used at all. */ 53 : : DW_CFA_same_value, ULEB128_7 (40), /* %es */ 54 : : DW_CFA_same_value, ULEB128_7 (41), /* %cs */ 55 : : DW_CFA_same_value, ULEB128_7 (42), /* %ss */ 56 : : DW_CFA_same_value, ULEB128_7 (43), /* %ds */ 57 : : DW_CFA_same_value, ULEB128_7 (44), /* %fs */ 58 : : DW_CFA_same_value, ULEB128_7 (45), /* %gs */ 59 : : }; 60 : : 61 : 40 : abi_info->initial_instructions = abi_cfi; 62 : 40 : abi_info->initial_instructions_end = &abi_cfi[sizeof abi_cfi]; 63 : 40 : abi_info->data_alignment_factor = 4; 64 : : 65 : 40 : abi_info->return_address_register = 8; /* %eip */ 66 : : 67 : 40 : return 0; 68 : : }