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[binutils.git] / bfd / cpu-i960.c
blob7fb2c7ebc5c16c96da41a3b1ae64983e9fef903d
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.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
22 #include "bfd.h"
23 #include "sysdep.h"
24 #include "libbfd.h"
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 */
31 static boolean
32 scan_960_mach (ap, string)
33 const bfd_arch_info_type *ap;
34 const char *string;
36 unsigned long machine;
38 /* Look for the string i960, or somesuch at the front of the string */
40 if (strncmp("i960",string,4) == 0) {
41 string+=4;
43 else {
44 /* no match, can be us */
45 return false;
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;
53 if (string[0] != ':') {
54 return false;
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;
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 */
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;
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.
111 We represent this information in an array, each machine to a side */
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)
124 static CONST unsigned long matrix[MAX_ARCH+1][MAX_ARCH+1] =
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 },
138 if (a->arch != b->arch || matrix[a->mach][b->mach] == ERROR)
140 return NULL;
142 else
144 return (a->mach == matrix[a->mach][b->mach]) ? a : b;
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,}
154 static const bfd_arch_info_type arch_info_struct[] =
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),
165 const bfd_arch_info_type bfd_i960_arch =
166 N(bfd_mach_i960_core, "i960:core", true, &arch_info_struct[0]);