bfd/cpu-i960.c

   1 /* BFD library support routines for the i960 architecture.
   2    Copyright (C) 1990, 91, 92, 93, 94, 95, 1996 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 (strcmp (string, "ka_sa") == 0)
  63     machine = bfd_mach_i960_ka_sa;
  64   else if (strcmp (string, "kb_sb") == 0)
  65     machine = bfd_mach_i960_kb_sb;
  66   else if (string[1] == '\0' || string[2] != '\0') /* rest are 2-char */
  67     return false;
  68   else if (string[0] == 'k' && string[1] == 'b')
  69     machine = bfd_mach_i960_kb_sb;
  70   else if (string[0] == 's' && string[1] == 'b')
  71     machine = bfd_mach_i960_kb_sb;
  72   else if (string[0] == 'm' && string[1] == 'c')
  73     machine = bfd_mach_i960_mc;
  74   else if (string[0] == 'x' && string[1] == 'a')
  75     machine = bfd_mach_i960_xa;
  76   else if (string[0] == 'c' && string[1] == 'a')
  77     machine = bfd_mach_i960_ca;
  78   else if (string[0] == 'k' && string[1] == 'a')
  79     machine = bfd_mach_i960_ka_sa;
  80   else if (string[0] == 's' && string[1] == 'a')
  81     machine = bfd_mach_i960_ka_sa;
  82   else if (string[0] == 'j' && string[1] == 'x')
  83     machine = bfd_mach_i960_jx;
  84   else if (string[0] == 'h' && string[1] == 'x')
  85     machine = bfd_mach_i960_hx;
  86   else
  87     return false;
  88   if (machine == ap->mach)   return true;
  89   return false;
  90 }
  91
  92
  93
  94 /* This routine is provided two arch_infos and works out the i960
  95    machine which would be compatible with both and returns a pointer
  96    to its info structure */
  97
  98 static const bfd_arch_info_type *
  99 compatible (a,b)
 100      const bfd_arch_info_type *a;
 101      const bfd_arch_info_type *b;
 102 {
 103
 104   /* The i960 has distinct subspecies which may not interbreed:
 105         CORE CA
 106         CORE KA KB MC XA
 107         CORE HX JX
 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 #define JX      bfd_mach_i960_jx    /*7*/
 121 #define HX      bfd_mach_i960_hx    /*8*/
 122 #define MAX_ARCH ((int)HX)
 123
 124   static CONST unsigned long matrix[MAX_ARCH+1][MAX_ARCH+1] =
 125     {
 126       { ERROR,  CORE,   KA,     KB,     MC,     XA,     CA,     JX,     HX },
 127       { CORE,   CORE,   KA,     KB,     MC,     XA,     CA,     JX,     HX },
 128       { KA,     KA,     KA,     KB,     MC,     XA,     ERROR,  ERROR,  ERROR},
 129       { KB,     KB,     KB,     KB,     MC,     XA,     ERROR,  ERROR,  ERROR},
 130       { MC,     MC,     MC,     MC,     MC,     XA,     ERROR,  ERROR,  ERROR},
 131       { XA,     XA,     XA,     XA,     XA,     XA,     ERROR,  ERROR,  ERROR},
 132       { CA,     CA,     ERROR,  ERROR,  ERROR,  ERROR,  CA,     ERROR,  ERROR},
 133       { JX,     JX,     ERROR,  ERROR,  ERROR,  ERROR,  ERROR,  JX,     HX },
 134       { HX,     HX,     ERROR,  ERROR,  ERROR,  ERROR,  ERROR,  HX,     HX },
 135     };
 136
 137
 138   if (a->arch != b->arch || matrix[a->mach][b->mach] == ERROR)
 139     {
 140     return NULL;
 141     }
 142   else
 143     {
 144     return (a->mach  ==  matrix[a->mach][b->mach]) ?  a : b;
 145     }
 146 }
 147
 148
 149
 150 int bfd_default_scan_num_mach();
 151 #define N(a,b,d,n) \
 152 { 32, 32, 8,bfd_arch_i960,a,"i960",b,3,d,compatible,scan_960_mach,n,}
 153
 154 static const bfd_arch_info_type arch_info_struct[] =
 155 {
 156   N(bfd_mach_i960_ka_sa,"i960:ka_sa",false, &arch_info_struct[1]),
 157   N(bfd_mach_i960_kb_sb,"i960:kb_sb",false, &arch_info_struct[2]),
 158   N(bfd_mach_i960_mc,   "i960:mc",   false, &arch_info_struct[3]),
 159   N(bfd_mach_i960_xa,   "i960:xa",   false, &arch_info_struct[4]),
 160   N(bfd_mach_i960_ca,   "i960:ca",   false, &arch_info_struct[5]),
 161   N(bfd_mach_i960_jx,   "i960:jx",   false, &arch_info_struct[6]),
 162   N(bfd_mach_i960_hx,   "i960:hx",   false, 0),
 163 };
 164
 165 const bfd_arch_info_type bfd_i960_arch =
 166   N(bfd_mach_i960_core, "i960:core", true, &arch_info_struct[0]);