| 1 | /* BFD library support routines for the i960 architecture. |
| 2 | Copyright (C) 1990-1991 Free Software Foundation, Inc. |
| 3 | Hacked by Steve Chamberlain of Cygnus Support. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 20 | |
| 21 | |
| 22 | #include <sysdep.h> |
| 23 | #include "bfd.h" |
| 24 | #include "libbfd.h" |
| 25 | |
| 26 | |
| 27 | /* This routine is provided a string, and tries to work out if it |
| 28 | could possibly refer to the i960 machine pointed at in the |
| 29 | info_struct pointer */ |
| 30 | |
| 31 | static boolean |
| 32 | DEFUN(scan_960_mach, (ap, string), |
| 33 | CONST bfd_arch_info_struct_type *ap AND |
| 34 | CONST char *string) |
| 35 | { |
| 36 | unsigned long machine; |
| 37 | |
| 38 | /* Look for the string i960, or somesuch at the front of the string */ |
| 39 | |
| 40 | if (strncmp("i960",string) == 0) { |
| 41 | string+=4; |
| 42 | } |
| 43 | else { |
| 44 | /* no match, can be us */ |
| 45 | return false; |
| 46 | } |
| 47 | if (string[0] == 0) { |
| 48 | /* i960 on it's own means core to us*/ |
| 49 | if (ap->mach == bfd_mach_i960_core) return true; |
| 50 | return false; |
| 51 | } |
| 52 | |
| 53 | if (string[0] != ':') { |
| 54 | return false; |
| 55 | } |
| 56 | string++; |
| 57 | if (string[0] == '\0') |
| 58 | return false; |
| 59 | if (string[0] == 'c' && string[1] == 'o' && string[2] == 'r' && |
| 60 | string[3] == 'e' && string[4] == '\0') |
| 61 | machine = bfd_mach_i960_core; |
| 62 | else if (string[1] == '\0' || string[2] != '\0') /* rest are 2-char */ |
| 63 | return false; |
| 64 | else if (string[0] == 'k' && string[1] == 'b') |
| 65 | machine = bfd_mach_i960_kb_sb; |
| 66 | else if (string[0] == 's' && string[1] == 'b') |
| 67 | machine = bfd_mach_i960_kb_sb; |
| 68 | else if (string[0] == 'm' && string[1] == 'c') |
| 69 | machine = bfd_mach_i960_mc; |
| 70 | else if (string[0] == 'x' && string[1] == 'a') |
| 71 | machine = bfd_mach_i960_xa; |
| 72 | else if (string[0] == 'c' && string[1] == 'a') |
| 73 | machine = bfd_mach_i960_ca; |
| 74 | else if (string[0] == 'k' && string[1] == 'a') |
| 75 | machine = bfd_mach_i960_ka_sa; |
| 76 | else if (string[0] == 's' && string[1] == 'a') |
| 77 | machine = bfd_mach_i960_ka_sa; |
| 78 | else |
| 79 | return false; |
| 80 | if (machine == ap->mach) return true; |
| 81 | return false; |
| 82 | } |
| 83 | |
| 84 | |
| 85 | |
| 86 | /* This routine is provided two arch_infos and works out the i960 |
| 87 | machine which would be compatible with both and returns a pointer |
| 88 | to its info structure */ |
| 89 | |
| 90 | CONST bfd_arch_info_struct_type * |
| 91 | DEFUN(compatible,(a,b), |
| 92 | CONST bfd_arch_info_struct_type *a AND |
| 93 | CONST bfd_arch_info_struct_type *b) |
| 94 | { |
| 95 | |
| 96 | /* The i960 has two distinct subspecies which may not interbreed: |
| 97 | CORE CA |
| 98 | CORE KA KB MC XA |
| 99 | Any architecture on the same line is compatible, the one on |
| 100 | the right is the least restrictive. |
| 101 | |
| 102 | We represent this information in an array, each machine to a side */ |
| 103 | |
| 104 | #define ERROR 0 |
| 105 | #define CORE bfd_mach_i960_core /*1*/ |
| 106 | #define KA bfd_mach_i960_ka_sa /*2*/ |
| 107 | #define KB bfd_mach_i960_kb_sb /*3*/ |
| 108 | #define MC bfd_mach_i960_mc /*4*/ |
| 109 | #define XA bfd_mach_i960_xa /*5*/ |
| 110 | #define CA bfd_mach_i960_ca /*6*/ |
| 111 | |
| 112 | |
| 113 | static CONST char matrix[7][7] = |
| 114 | { |
| 115 | ERROR,CORE, KA, KB, MC, XA, CA, |
| 116 | CORE, CORE, KA, KB, MC, XA, CA, |
| 117 | KA, KA, KA, KB, MC, XA, ERROR, |
| 118 | KB, KB, KB, KB, MC, XA, ERROR, |
| 119 | MC, MC, MC, MC, MC, XA, ERROR, |
| 120 | XA, XA, XA, XA, XA, XA, ERROR, |
| 121 | CA, CA, ERROR, ERROR, ERROR, ERROR, CA |
| 122 | }; |
| 123 | |
| 124 | |
| 125 | if (a->arch != b->arch || matrix[a->mach][b->mach] == ERROR) |
| 126 | { |
| 127 | return (bfd_arch_info_struct_type *)NULL; |
| 128 | } |
| 129 | else |
| 130 | { |
| 131 | return (a->mach == matrix[a->mach][b->mach]) ? a : b; |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | |
| 136 | |
| 137 | int bfd_default_scan_num_mach(); |
| 138 | #define N(a,b,d) \ |
| 139 | { 32, 32, 8,bfd_arch_i960,a,"i960",b,d,compatible,scan_960_mach,0,} |
| 140 | |
| 141 | static bfd_arch_info_struct_type arch_info_struct[] = |
| 142 | { |
| 143 | N(bfd_mach_i960_core,"i960:core",true), |
| 144 | N(bfd_mach_i960_ka_sa,"i960:ka_sa",false), |
| 145 | N(bfd_mach_i960_kb_sb,"i960:kb_sb",false), |
| 146 | N(bfd_mach_i960_mc,"i960:mc",false), |
| 147 | N(bfd_mach_i960_xa,"i960:xa",false), |
| 148 | N(bfd_mach_i960_ca,"i960:ca",false) |
| 149 | }; |
| 150 | |
| 151 | |
| 152 | void DEFUN_VOID(bfd_i960_arch) |
| 153 | { |
| 154 | unsigned int i; |
| 155 | for (i = 0; i < 6; i++) { |
| 156 | bfd_arch_linkin(arch_info_struct + i); |
| 157 | } |
| 158 | } |