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   int i;
  38   int fail_because_not_80960 = false;
  39
  40   for (i = 0; i < strlen (string); i ++)
  41     string[i] = tolower (string[i]);
  42
  43   /* Look for the string i960 at the front of the string.  */
  44   if (strncmp ("i960", string, 4) == 0)
  45     {
  46       string += 4;
  47
  48       /* i960 on it's own means core to us.  */
  49       if (* string == 0)
  50         return ap->mach == bfd_mach_i960_core;
  51
  52       /* "i960:*" is valid, anything else is not.  */
  53       if (* string != ':')
  54         return false;
  55
  56       string ++;
  57     }
  58   /* In some bfds the cpu-id is written as "80960KA", "80960KB",
  59      "80960CA" or "80960MC".  */
  60   else if (strncmp ("80960", string, 5) == 0)
  61     {
  62       string += 5;
  63
  64       /* Sett his to true here.  If a correct matching postfix
  65          is detected below it will be reset to false.  */
  66       fail_because_not_80960 = true;
  67     }
  68   /* No match, can't be us.  */
  69   else
  70     return false;
  71
  72   if (* string == '\0')
  73     return false;
  74
  75   if (string[0] == 'c' && string[1] == 'o' && string[2] == 'r' &&
  76       string[3] == 'e' && string[4] == '\0')
  77     machine = bfd_mach_i960_core;
  78   else if (strcmp (string, "ka_sa") == 0)
  79     machine = bfd_mach_i960_ka_sa;
  80   else if (strcmp (string, "kb_sb") == 0)
  81     machine = bfd_mach_i960_kb_sb;
  82   else if (string[1] == '\0' || string[2] != '\0') /* rest are 2-char.  */
  83     return false;
  84   else if (string[0] == 'k' && string[1] == 'b')
  85     { machine = bfd_mach_i960_kb_sb; fail_because_not_80960 = false; }
  86   else if (string[0] == 's' && string[1] == 'b')
  87     machine = bfd_mach_i960_kb_sb;
  88   else if (string[0] == 'm' && string[1] == 'c')
  89     { machine = bfd_mach_i960_mc; fail_because_not_80960 = false; }
  90   else if (string[0] == 'x' && string[1] == 'a')
  91     machine = bfd_mach_i960_xa;
  92   else if (string[0] == 'c' && string[1] == 'a')
  93     { machine = bfd_mach_i960_ca; fail_because_not_80960 = false; }
  94   else if (string[0] == 'k' && string[1] == 'a')
  95     { machine = bfd_mach_i960_ka_sa; fail_because_not_80960 = false; }
  96   else if (string[0] == 's' && string[1] == 'a')
  97     machine = bfd_mach_i960_ka_sa;
  98   else if (string[0] == 'j' && string[1] == 'x')
  99     machine = bfd_mach_i960_jx;
 100   else if (string[0] == 'h' && string[1] == 'x')
 101     machine = bfd_mach_i960_hx;
 102   else
 103     return false;
 104
 105   if (fail_because_not_80960)
 106     return false;
 107
 108   if (machine == ap->mach)
 109     return true;
 110
 111   return false;
 112 }
 113
 114
 115
 116 /* This routine is provided two arch_infos and works out the i960
 117    machine which would be compatible with both and returns a pointer
 118    to its info structure */
 119
 120 static const bfd_arch_info_type *
 121 compatible (a,b)
 122      const bfd_arch_info_type *a;
 123      const bfd_arch_info_type *b;
 124 {
 125
 126   /* The i960 has distinct subspecies which may not interbreed:
 127         CORE CA
 128         CORE KA KB MC XA
 129         CORE HX JX
 130      Any architecture on the same line is compatible, the one on
 131      the right is the least restrictive.
 132
 133      We represent this information in an array, each machine to a side */
 134
 135 #define ERROR   0
 136 #define CORE    bfd_mach_i960_core  /*1*/
 137 #define KA      bfd_mach_i960_ka_sa /*2*/
 138 #define KB      bfd_mach_i960_kb_sb /*3*/
 139 #define MC      bfd_mach_i960_mc    /*4*/
 140 #define XA      bfd_mach_i960_xa    /*5*/
 141 #define CA      bfd_mach_i960_ca    /*6*/
 142 #define JX      bfd_mach_i960_jx    /*7*/
 143 #define HX      bfd_mach_i960_hx    /*8*/
 144 #define MAX_ARCH ((int)HX)
 145
 146   static CONST unsigned long matrix[MAX_ARCH+1][MAX_ARCH+1] =
 147     {
 148       { ERROR,  CORE,   KA,     KB,     MC,     XA,     CA,     JX,     HX },
 149       { CORE,   CORE,   KA,     KB,     MC,     XA,     CA,     JX,     HX },
 150       { KA,     KA,     KA,     KB,     MC,     XA,     ERROR,  ERROR,  ERROR},
 151       { KB,     KB,     KB,     KB,     MC,     XA,     ERROR,  ERROR,  ERROR},
 152       { MC,     MC,     MC,     MC,     MC,     XA,     ERROR,  ERROR,  ERROR},
 153       { XA,     XA,     XA,     XA,     XA,     XA,     ERROR,  ERROR,  ERROR},
 154       { CA,     CA,     ERROR,  ERROR,  ERROR,  ERROR,  CA,     ERROR,  ERROR},
 155       { JX,     JX,     ERROR,  ERROR,  ERROR,  ERROR,  ERROR,  JX,     HX },
 156       { HX,     HX,     ERROR,  ERROR,  ERROR,  ERROR,  ERROR,  HX,     HX },
 157     };
 158
 159
 160   if (a->arch != b->arch || matrix[a->mach][b->mach] == ERROR)
 161     {
 162     return NULL;
 163     }
 164   else
 165     {
 166     return (a->mach  ==  matrix[a->mach][b->mach]) ?  a : b;
 167     }
 168 }
 169
 170
 171
 172 int bfd_default_scan_num_mach();
 173 #define N(a,b,d,n) \
 174 { 32, 32, 8,bfd_arch_i960,a,"i960",b,3,d,compatible,scan_960_mach,n,}
 175
 176 static const bfd_arch_info_type arch_info_struct[] =
 177 {
 178   N(bfd_mach_i960_ka_sa,"i960:ka_sa",false, &arch_info_struct[1]),
 179   N(bfd_mach_i960_kb_sb,"i960:kb_sb",false, &arch_info_struct[2]),
 180   N(bfd_mach_i960_mc,   "i960:mc",   false, &arch_info_struct[3]),
 181   N(bfd_mach_i960_xa,   "i960:xa",   false, &arch_info_struct[4]),
 182   N(bfd_mach_i960_ca,   "i960:ca",   false, &arch_info_struct[5]),
 183   N(bfd_mach_i960_jx,   "i960:jx",   false, &arch_info_struct[6]),
 184   N(bfd_mach_i960_hx,   "i960:hx",   false, 0),
 185 };
 186
 187 const bfd_arch_info_type bfd_i960_arch =
 188   N(bfd_mach_i960_core, "i960:core", true, &arch_info_struct[0]);