cpu-i960.c revision 1.4
1/* BFD library support routines for the i960 architecture. 2 Copyright 1990, 1991, 1993, 1994, 1996, 1999, 2000 3 Free Software Foundation, Inc. 4 Hacked by Steve Chamberlain of Cygnus Support. 5 6This file is part of BFD, the Binary File Descriptor library. 7 8This program is free software; you can redistribute it and/or modify 9it under the terms of the GNU General Public License as published by 10the Free Software Foundation; either version 2 of the License, or 11(at your option) any later version. 12 13This program is distributed in the hope that it will be useful, 14but WITHOUT ANY WARRANTY; without even the implied warranty of 15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16GNU General Public License for more details. 17 18You should have received a copy of the GNU General Public License 19along with this program; if not, write to the Free Software 20Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 21 22#include "bfd.h" 23#include "sysdep.h" 24#include "libbfd.h" 25 26/* This routine is provided a string, and tries to work out if it 27 could possibly refer to the i960 machine pointed at in the 28 info_struct pointer */ 29 30static boolean 31scan_960_mach (ap, string) 32 const bfd_arch_info_type *ap; 33 const char *string; 34{ 35 unsigned long machine; 36 int i; 37 int fail_because_not_80960 = false; 38 39 for (i = 0; i < strlen (string); i ++) 40 string[i] = tolower (string[i]); 41 42 /* Look for the string i960 at the front of the string. */ 43 if (strncmp ("i960", string, 4) == 0) 44 { 45 string += 4; 46 47 /* i960 on it's own means core to us. */ 48 if (* string == 0) 49 return ap->mach == bfd_mach_i960_core; 50 51 /* "i960:*" is valid, anything else is not. */ 52 if (* string != ':') 53 return false; 54 55 string ++; 56 } 57 /* In some bfds the cpu-id is written as "80960KA", "80960KB", 58 "80960CA" or "80960MC". */ 59 else if (strncmp ("80960", string, 5) == 0) 60 { 61 string += 5; 62 63 /* Sett his to true here. If a correct matching postfix 64 is detected below it will be reset to false. */ 65 fail_because_not_80960 = true; 66 } 67 /* No match, can't be us. */ 68 else 69 return false; 70 71 if (* string == '\0') 72 return false; 73 74 if (string[0] == 'c' && string[1] == 'o' && string[2] == 'r' && 75 string[3] == 'e' && string[4] == '\0') 76 machine = bfd_mach_i960_core; 77 else if (strcmp (string, "ka_sa") == 0) 78 machine = bfd_mach_i960_ka_sa; 79 else if (strcmp (string, "kb_sb") == 0) 80 machine = bfd_mach_i960_kb_sb; 81 else if (string[1] == '\0' || string[2] != '\0') /* rest are 2-char. */ 82 return false; 83 else if (string[0] == 'k' && string[1] == 'b') 84 { machine = bfd_mach_i960_kb_sb; fail_because_not_80960 = false; } 85 else if (string[0] == 's' && string[1] == 'b') 86 machine = bfd_mach_i960_kb_sb; 87 else if (string[0] == 'm' && string[1] == 'c') 88 { machine = bfd_mach_i960_mc; fail_because_not_80960 = false; } 89 else if (string[0] == 'x' && string[1] == 'a') 90 machine = bfd_mach_i960_xa; 91 else if (string[0] == 'c' && string[1] == 'a') 92 { machine = bfd_mach_i960_ca; fail_because_not_80960 = false; } 93 else if (string[0] == 'k' && string[1] == 'a') 94 { machine = bfd_mach_i960_ka_sa; fail_because_not_80960 = false; } 95 else if (string[0] == 's' && string[1] == 'a') 96 machine = bfd_mach_i960_ka_sa; 97 else if (string[0] == 'j' && string[1] == 'x') 98 machine = bfd_mach_i960_jx; 99 else if (string[0] == 'h' && string[1] == 'x') 100 machine = bfd_mach_i960_hx; 101 else 102 return false; 103 104 if (fail_because_not_80960) 105 return false; 106 107 if (machine == ap->mach) 108 return true; 109 110 return false; 111} 112 113/* This routine is provided two arch_infos and works out the i960 114 machine which would be compatible with both and returns a pointer 115 to its info structure */ 116 117static const bfd_arch_info_type * 118compatible (a,b) 119 const bfd_arch_info_type *a; 120 const bfd_arch_info_type *b; 121{ 122 123 /* The i960 has distinct subspecies which may not interbreed: 124 CORE CA 125 CORE KA KB MC XA 126 CORE HX JX 127 Any architecture on the same line is compatible, the one on 128 the right is the least restrictive. 129 130 We represent this information in an array, each machine to a side */ 131 132#define ERROR 0 133#define CORE bfd_mach_i960_core /*1*/ 134#define KA bfd_mach_i960_ka_sa /*2*/ 135#define KB bfd_mach_i960_kb_sb /*3*/ 136#define MC bfd_mach_i960_mc /*4*/ 137#define XA bfd_mach_i960_xa /*5*/ 138#define CA bfd_mach_i960_ca /*6*/ 139#define JX bfd_mach_i960_jx /*7*/ 140#define HX bfd_mach_i960_hx /*8*/ 141#define MAX_ARCH ((int)HX) 142 143 static CONST unsigned long matrix[MAX_ARCH+1][MAX_ARCH+1] = 144 { 145 { ERROR, CORE, KA, KB, MC, XA, CA, JX, HX }, 146 { CORE, CORE, KA, KB, MC, XA, CA, JX, HX }, 147 { KA, KA, KA, KB, MC, XA, ERROR, ERROR, ERROR}, 148 { KB, KB, KB, KB, MC, XA, ERROR, ERROR, ERROR}, 149 { MC, MC, MC, MC, MC, XA, ERROR, ERROR, ERROR}, 150 { XA, XA, XA, XA, XA, XA, ERROR, ERROR, ERROR}, 151 { CA, CA, ERROR, ERROR, ERROR, ERROR, CA, ERROR, ERROR}, 152 { JX, JX, ERROR, ERROR, ERROR, ERROR, ERROR, JX, HX }, 153 { HX, HX, ERROR, ERROR, ERROR, ERROR, ERROR, HX, HX }, 154 }; 155 156 if (a->arch != b->arch || matrix[a->mach][b->mach] == ERROR) 157 { 158 return NULL; 159 } 160 else 161 { 162 return (a->mach == matrix[a->mach][b->mach]) ? a : b; 163 } 164} 165 166int bfd_default_scan_num_mach(); 167#define N(a,b,d,n) \ 168{ 32, 32, 8,bfd_arch_i960,a,"i960",b,3,d,compatible,scan_960_mach,n,} 169 170static const bfd_arch_info_type arch_info_struct[] = 171{ 172 N(bfd_mach_i960_ka_sa,"i960:ka_sa",false, &arch_info_struct[1]), 173 N(bfd_mach_i960_kb_sb,"i960:kb_sb",false, &arch_info_struct[2]), 174 N(bfd_mach_i960_mc, "i960:mc", false, &arch_info_struct[3]), 175 N(bfd_mach_i960_xa, "i960:xa", false, &arch_info_struct[4]), 176 N(bfd_mach_i960_ca, "i960:ca", false, &arch_info_struct[5]), 177 N(bfd_mach_i960_jx, "i960:jx", false, &arch_info_struct[6]), 178 N(bfd_mach_i960_hx, "i960:hx", false, 0), 179}; 180 181const bfd_arch_info_type bfd_i960_arch = 182 N(bfd_mach_i960_core, "i960:core", true, &arch_info_struct[0]); 183