1 /* Register names and numbers for i386 DWARF. 2 Copyright (C) 2005, 2006, 2007 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 <string.h> 34 #include <dwarf.h> 35 36 #define BACKEND i386_ 37 #include "libebl_CPU.h" 38 39 ssize_t 40 i386_register_info (Ebl *ebl __attribute__ ((unused)), 41 int regno, char *name, size_t namelen, 42 const char **prefix, const char **setname, 43 int *bits, int *type) 44 { 45 if (name == NULL) 46 return 46; 47 48 if (regno < 0 || regno > 45 || namelen < 6) 49 return -1; 50 51 *prefix = "%"; 52 *bits = 32; 53 *type = DW_ATE_unsigned; 54 if (regno < 11) 55 { 56 *setname = "integer"; 57 if (regno < 9) 58 *type = DW_ATE_signed; 59 } 60 else if (regno < 19) 61 { 62 *setname = "x87"; 63 *type = DW_ATE_float; 64 *bits = 80; 65 } 66 else if (regno < 29) 67 { 68 *setname = "SSE"; 69 *bits = 128; 70 } 71 else if (regno < 37) 72 { 73 *setname = "MMX"; 74 *bits = 64; 75 } 76 else if (regno < 40) 77 *setname = "FPU-control"; 78 else 79 { 80 *setname = "segment"; 81 *bits = 16; 82 } 83 84 switch (regno) 85 { 86 static const char baseregs[][2] = 87 { 88 "ax", "cx", "dx", "bx", "sp", "bp", "si", "di", "ip" 89 }; 90 91 case 4: 92 case 5: 93 case 8: 94 *type = DW_ATE_address; 95 case 0 ... 3: 96 case 6 ... 7: 97 name[0] = 'e'; 98 name[1] = baseregs[regno][0]; 99 name[2] = baseregs[regno][1]; 100 namelen = 3; 101 break; 102 103 case 9: 104 return stpcpy (name, "eflags") + 1 - name; 105 case 10: 106 return stpcpy (name, "trapno") + 1 - name; 107 108 case 11 ... 18: 109 name[0] = 's'; 110 name[1] = 't'; 111 name[2] = regno - 11 + '0'; 112 namelen = 3; 113 break; 114 115 case 21 ... 28: 116 name[0] = 'x'; 117 name[1] = 'm'; 118 name[2] = 'm'; 119 name[3] = regno - 21 + '0'; 120 namelen = 4; 121 break; 122 123 case 29 ... 36: 124 name[0] = 'm'; 125 name[1] = 'm'; 126 name[2] = regno - 29 + '0'; 127 namelen = 3; 128 break; 129 130 case 37: 131 *bits = 16; 132 return stpcpy (name, "fctrl") + 1 - name; 133 case 38: 134 *bits = 16; 135 return stpcpy (name, "fstat") + 1 - name; 136 case 39: 137 return stpcpy (name, "mxcsr") + 1 - name; 138 139 case 40 ... 45: 140 name[0] = "ecsdfg"[regno - 40]; 141 name[1] = 's'; 142 namelen = 2; 143 break; 144 145 default: 146 *setname = NULL; 147 return 0; 148 } 149 150 name[namelen++] = '\0'; 151 return namelen; 152 } 153