1 /* BFD library support routines for the i960 architecture.
2 Copyright 1990, 1991, 1993, 1994, 1996, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
4 Hacked by Steve Chamberlain of Cygnus Support.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21
22 #include "bfd.h"
23 #include "sysdep.h"
24 #include "libbfd.h"
25
26 static bfd_boolean scan_960_mach
27 PARAMS ((const bfd_arch_info_type *, const char *));
28 static const bfd_arch_info_type *compatible
29 PARAMS ((const bfd_arch_info_type *, const bfd_arch_info_type *));
30
31 /* This routine is provided a string, and tries to work out if it
32 could possibly refer to the i960 machine pointed at in the
33 info_struct pointer */
34
35 static bfd_boolean
scan_960_mach(ap,string)36 scan_960_mach (ap, string)
37 const bfd_arch_info_type *ap;
38 const char *string;
39 {
40 unsigned long machine;
41 int fail_because_not_80960 = FALSE;
42
43 /* Look for the string i960 at the front of the string. */
44 if (strncasecmp ("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 /* Set this 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 (strcasecmp (string, "ka_sa") == 0)
79 machine = bfd_mach_i960_ka_sa;
80 else if (strcasecmp (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 /* This routine is provided two arch_infos and works out the i960
115 machine which would be compatible with both and returns a pointer
116 to its info structure */
117
118 static const bfd_arch_info_type *
compatible(a,b)119 compatible (a,b)
120 const bfd_arch_info_type *a;
121 const bfd_arch_info_type *b;
122 {
123
124 /* The i960 has distinct subspecies which may not interbreed:
125 CORE CA
126 CORE KA KB MC XA
127 CORE HX JX
128 Any architecture on the same line is compatible, the one on
129 the right is the least restrictive.
130
131 We represent this information in an array, each machine to a side */
132
133 #define ERROR 0
134 #define CORE bfd_mach_i960_core /*1*/
135 #define KA bfd_mach_i960_ka_sa /*2*/
136 #define KB bfd_mach_i960_kb_sb /*3*/
137 #define MC bfd_mach_i960_mc /*4*/
138 #define XA bfd_mach_i960_xa /*5*/
139 #define CA bfd_mach_i960_ca /*6*/
140 #define JX bfd_mach_i960_jx /*7*/
141 #define HX bfd_mach_i960_hx /*8*/
142 #define MAX_ARCH ((int)HX)
143
144 static const unsigned long matrix[MAX_ARCH+1][MAX_ARCH+1] =
145 {
146 { ERROR, CORE, KA, KB, MC, XA, CA, JX, HX },
147 { CORE, CORE, KA, KB, MC, XA, CA, JX, HX },
148 { KA, KA, KA, KB, MC, XA, ERROR, ERROR, ERROR},
149 { KB, KB, KB, KB, MC, XA, ERROR, ERROR, ERROR},
150 { MC, MC, MC, MC, MC, XA, ERROR, ERROR, ERROR},
151 { XA, XA, XA, XA, XA, XA, ERROR, ERROR, ERROR},
152 { CA, CA, ERROR, ERROR, ERROR, ERROR, CA, ERROR, ERROR},
153 { JX, JX, ERROR, ERROR, ERROR, ERROR, ERROR, JX, HX },
154 { HX, HX, ERROR, ERROR, ERROR, ERROR, ERROR, HX, HX },
155 };
156
157 if (a->arch != b->arch || matrix[a->mach][b->mach] == ERROR)
158 {
159 return NULL;
160 }
161 else
162 {
163 return (a->mach == matrix[a->mach][b->mach]) ? a : b;
164 }
165 }
166
167 #define N(a,b,d,n) \
168 { 32, 32, 8,bfd_arch_i960,a,"i960",b,3,d,compatible,scan_960_mach,n,}
169
170 static const bfd_arch_info_type arch_info_struct[] =
171 {
172 N(bfd_mach_i960_ka_sa,"i960:ka_sa",FALSE, &arch_info_struct[1]),
173 N(bfd_mach_i960_kb_sb,"i960:kb_sb",FALSE, &arch_info_struct[2]),
174 N(bfd_mach_i960_mc, "i960:mc", FALSE, &arch_info_struct[3]),
175 N(bfd_mach_i960_xa, "i960:xa", FALSE, &arch_info_struct[4]),
176 N(bfd_mach_i960_ca, "i960:ca", FALSE, &arch_info_struct[5]),
177 N(bfd_mach_i960_jx, "i960:jx", FALSE, &arch_info_struct[6]),
178 N(bfd_mach_i960_hx, "i960:hx", FALSE, 0),
179 };
180
181 const bfd_arch_info_type bfd_i960_arch =
182 N(bfd_mach_i960_core, "i960:core", TRUE, &arch_info_struct[0]);
183