bfd/cpu-i960.c

   1 /* BFD library support routines for the i960 architecture.
   2    Copyright (C) 1990, 91, 92, 93, 94 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21
  22 #include "bfd.h"
  23 #include "sysdep.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 scan_960_mach (ap, string)
  33      const bfd_arch_info_type *ap;
  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,4) == 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   /* start-sanitize-i960xl */
  79   else if (string[0] == 'x' && string[1] == 'l')
  80     machine = bfd_mach_i960_xl;
  81   /* end-sanitize-i960xl */
  82   else if (string[0] == 'h' && string[1] == 'x')
  83     machine = bfd_mach_i960_hx;
  84   else
  85     return false;
  86   if (machine == ap->mach)   return true;
  87   return false;
  88 }
  89
  90
  91
  92 /* This routine is provided two arch_infos and works out the i960
  93    machine which would be compatible with both and returns a pointer
  94    to its info structure */
  95
  96 static const bfd_arch_info_type *
  97 compatible (a,b)
  98      const bfd_arch_info_type *a;
  99      const bfd_arch_info_type *b;
 100 {
 101
 102   /* The i960 has distinct subspecies which may not interbreed:
 103         CORE CA
 104         CORE KA KB MC XA
 105      start-sanitize-i960xl
 106         CORE XL
 107      end-sanitize-i960xl
 108      Any architecture on the same line is compatible, the one on
 109      the right is the least restrictive.
 110
 111      We represent this information in an array, each machine to a side */
 112
 113 #define ERROR   0
 114 #define CORE    bfd_mach_i960_core  /*1*/
 115 #define KA      bfd_mach_i960_ka_sa /*2*/
 116 #define KB      bfd_mach_i960_kb_sb /*3*/
 117 #define MC      bfd_mach_i960_mc    /*4*/
 118 #define XA      bfd_mach_i960_xa    /*5*/
 119 #define CA      bfd_mach_i960_ca    /*6*/
 120 /* start-sanitize-i960xl */
 121 #define XL      bfd_mach_i960_xl    /*7*/
 122 /* end-sanitize-i960xl */
 123 #define HX      bfd_mach_i960_hx    /*8*/
 124 #define MAX_ARCH ((int)HX)
 125
 126   static CONST unsigned long matrix[MAX_ARCH+1][MAX_ARCH+1] =
 127     {
 128       { ERROR,  CORE,   KA,     KB,     MC,     XA,     CA,     7,      HX },
 129       { CORE,   CORE,   KA,     KB,     MC,     XA,     CA,     7,      HX },
 130       { KA,     KA,     KA,     KB,     MC,     XA,     ERROR,  ERROR,  ERROR},
 131       { KB,     KB,     KB,     KB,     MC,     XA,     ERROR,  ERROR,  ERROR},
 132       { MC,     MC,     MC,     MC,     MC,     XA,     ERROR,  ERROR,  ERROR},
 133       { XA,     XA,     XA,     XA,     XA,     XA,     ERROR,  ERROR,  ERROR},
 134       { CA,     CA,     ERROR,  ERROR,  ERROR,  ERROR,  CA,     ERROR,  ERROR},
 135       { 7,      ERROR,  ERROR,  ERROR,  ERROR,  ERROR,  ERROR,  7 },
 136       { HX,     ERROR,  ERROR,  ERROR,  ERROR,  ERROR,  ERROR,  8 },
 137     };
 138
 139
 140   if (a->arch != b->arch || matrix[a->mach][b->mach] == ERROR)
 141     {
 142     return NULL;
 143     }
 144   else
 145     {
 146     return (a->mach  ==  matrix[a->mach][b->mach]) ?  a : b;
 147     }
 148 }
 149
 150
 151
 152 int bfd_default_scan_num_mach();
 153 #define N(a,b,d,n) \
 154 { 32, 32, 8,bfd_arch_i960,a,"i960",b,3,d,compatible,scan_960_mach,n,}
 155
 156 static const bfd_arch_info_type arch_info_struct[] =
 157 {
 158   N(bfd_mach_i960_ka_sa,"i960:ka_sa",false, &arch_info_struct[1]),
 159   N(bfd_mach_i960_kb_sb,"i960:kb_sb",false, &arch_info_struct[2]),
 160   N(bfd_mach_i960_mc,   "i960:mc",   false, &arch_info_struct[3]),
 161   N(bfd_mach_i960_xa,   "i960:xa",   false, &arch_info_struct[4]),
 162   N(bfd_mach_i960_ca,   "i960:ca",   false, &arch_info_struct[5]),
 163   /* start-sanitize-i960xl */
 164   N(bfd_mach_i960_xl,   "i960:xl",   false, &arch_info_struct[6]),
 165   /* end-sanitize-i960xl */
 166   N(bfd_mach_i960_hx,   "i960:hx",   false, 0),
 167 };
 168
 169 const bfd_arch_info_type bfd_i960_arch =
 170   N(bfd_mach_i960_core, "i960:core", true, &arch_info_struct[0]);