1 /* i386 ABI-specified defaults for DWARF CFI. 2 Copyright (C) 2009 Red Hat, Inc. 3 This file is part of Red Hat elfutils. 4 5 Red Hat elfutils is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by the 7 Free Software Foundation; version 2 of the License. 8 9 Red Hat elfutils is distributed in the hope that it will be useful, but 10 WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 General Public License for more details. 13 14 You should have received a copy of the GNU General Public License along 15 with Red Hat elfutils; if not, write to the Free Software Foundation, 16 Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. 17 18 Red Hat elfutils is an included package of the Open Invention Network. 19 An included package of the Open Invention Network is a package for which 20 Open Invention Network licensees cross-license their patents. No patent 21 license is granted, either expressly or impliedly, by designation as an 22 included package. Should you wish to participate in the Open Invention 23 Network licensing program, please visit www.openinventionnetwork.com 24 <http://www.openinventionnetwork.com>. */ 25 26 #ifdef HAVE_CONFIG_H 27 # include <config.h> 28 #endif 29 30 #include <dwarf.h> 31 32 #define BACKEND i386_ 33 #include "libebl_CPU.h" 34 35 int 36 i386_abi_cfi (Ebl *ebl __attribute__ ((unused)), Dwarf_CIE *abi_info) 37 { 38 static const uint8_t abi_cfi[] = 39 { 40 /* Call-saved regs. */ 41 DW_CFA_same_value, ULEB128_7 (3), /* %ebx */ 42 DW_CFA_same_value, ULEB128_7 (5), /* %ebp */ 43 DW_CFA_same_value, ULEB128_7 (6), /* %esi */ 44 DW_CFA_same_value, ULEB128_7 (7), /* %edi */ 45 46 /* The CFA is the SP. */ 47 DW_CFA_val_offset, ULEB128_7 (4), ULEB128_7 (0), 48 49 /* Segment registers are call-saved if ever used at all. */ 50 DW_CFA_same_value, ULEB128_7 (40), /* %es */ 51 DW_CFA_same_value, ULEB128_7 (41), /* %cs */ 52 DW_CFA_same_value, ULEB128_7 (42), /* %ss */ 53 DW_CFA_same_value, ULEB128_7 (43), /* %ds */ 54 DW_CFA_same_value, ULEB128_7 (44), /* %fs */ 55 DW_CFA_same_value, ULEB128_7 (45), /* %gs */ 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 = 4; 61 62 abi_info->return_address_register = 8; /* %eip */ 63 64 return 0; 65 } 66
