OpenCores
URL https://opencores.org/ocsvn/open8_urisc/open8_urisc/trunk

Subversion Repositories open8_urisc

[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [cpu/] [fr30.opc] - Blame information for rev 190

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 161 khays 
/* FR30 opcode support.  -*- C -*-
2 
   Copyright 2011 Free Software Foundation, Inc.
3 
 
4 
   Contributed by Red Hat Inc;
5 
 
6 
   This file is part of the GNU Binutils.
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 3 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., 51 Franklin Street - Fifth Floor, Boston,
21 
   MA 02110-1301, USA.  */
22 
 
23 
/* This file is an addendum to fr30.cpu.  Heavy use of C code isn't
24 
   appropriate in .cpu files, so it resides here.  This especially applies
25 
   to assembly/disassembly where parsing/printing can be quite involved.
26 
   Such things aren't really part of the specification of the cpu, per se,
27 
   so .cpu files provide the general framework and .opc files handle the
28 
   nitty-gritty details as necessary.
29 
 
30 
   Each section is delimited with start and end markers.
31 
 
32 
   -opc.h additions use: "-- opc.h"
33 
   -opc.c additions use: "-- opc.c"
34 
   -asm.c additions use: "-- asm.c"
35 
   -dis.c additions use: "-- dis.c"
36 
   -ibd.h additions use: "-- ibd.h".  */
37 
 
38 
/* -- opc.h */
39 
 
40 
/* ??? This can be improved upon.  */
41 
#undef  CGEN_DIS_HASH_SIZE
42 
#define CGEN_DIS_HASH_SIZE 16
43 
#undef  CGEN_DIS_HASH
44 
#define CGEN_DIS_HASH(buffer, value) (((unsigned char *) (buffer))[0] >> 4)
45 
 
46 
/* -- */
47 
 
48 
/* -- asm.c */
49 
/* Handle register lists for LDMx and STMx.  */
50 
 
51 
static int
52 
parse_register_number (const char **strp)
53 
{
54 
  int regno;
55 
 
56 
  if (**strp < '0' || **strp > '9')
57 
    return -1; /* Error.  */
58 
  regno = **strp - '0';
59 
  ++*strp;
60 
 
61 
  if (**strp >= '0' && **strp <= '9')
62 
    {
63 
      regno = regno * 10 + (**strp - '0');
64 
      ++*strp;
65 
    }
66 
 
67 
  return regno;
68 
}
69 
 
70 
static const char *
71 
parse_register_list (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
72 
                     const char **strp,
73 
                     int opindex ATTRIBUTE_UNUSED,
74 
                     unsigned long *valuep,
75 
                     int high_low,   /* 0 == high, 1 == low.  */
76 
                     int load_store) /* 0 == load, 1 == store.  */
77 
{
78 
  *valuep = 0;
79 
  while (**strp && **strp != ')')
80 
    {
81 
      int regno;
82 
 
83 
      if (**strp != 'R' && **strp != 'r')
84 
        break;
85 
      ++*strp;
86 
 
87 
      regno = parse_register_number (strp);
88 
      if (regno == -1)
89 
        return _("Register number is not valid");
90 
      if (regno > 7 && !high_low)
91 
        return _("Register must be between r0 and r7");
92 
      if (regno < 8 && high_low)
93 
        return _("Register must be between r8 and r15");
94 
 
95 
      if (high_low)
96 
        regno -= 8;
97 
 
98 
      if (load_store) /* Mask is reversed for store.  */
99 
        *valuep |= 0x80 >> regno;
100 
      else
101 
        *valuep |= 1 << regno;
102 
 
103 
      if (**strp == ',')
104 
        {
105 
          if (*(*strp + 1) == ')')
106 
            break;
107 
          ++*strp;
108 
        }
109 
    }
110 
 
111 
  if (!*strp || **strp != ')')
112 
    return _("Register list is not valid");
113 
 
114 
  return NULL;
115 
}
116 
 
117 
static const char *
118 
parse_low_register_list_ld (CGEN_CPU_DESC cd,
119 
                            const char **strp,
120 
                            int opindex,
121 
                            unsigned long *valuep)
122 
{
123 
  return parse_register_list (cd, strp, opindex, valuep,
124 
 
125 
}
126 
 
127 
static const char *
128 
parse_hi_register_list_ld (CGEN_CPU_DESC cd,
129 
                           const char **strp,
130 
                           int opindex,
131 
                           unsigned long *valuep)
132 
{
133 
  return parse_register_list (cd, strp, opindex, valuep,
134 
                              1 /* High.  */, 0 /* Load.  */);
135 
}
136 
 
137 
static const char *
138 
parse_low_register_list_st (CGEN_CPU_DESC cd,
139 
                            const char **strp,
140 
                            int opindex,
141 
                            unsigned long *valuep)
142 
{
143 
  return parse_register_list (cd, strp, opindex, valuep,
144 
 
145 
}
146 
 
147 
static const char *
148 
parse_hi_register_list_st (CGEN_CPU_DESC cd,
149 
                           const char **strp,
150 
                           int opindex,
151 
                           unsigned long *valuep)
152 
{
153 
  return parse_register_list (cd, strp, opindex, valuep,
154 
                              1 /* High.  */, 1 /* Store.  */);
155 
}
156 
 
157 
/* -- */
158 
 
159 
/* -- dis.c */
160 
static void
161 
print_register_list (void * dis_info,
162 
                     long value,
163 
                     long offset,
164 
                     int load_store) /* 0 == load, 1 == store.  */
165 
{
166 
  disassemble_info *info = dis_info;
167 
  int mask;
168 
  int reg_index = 0;
169 
  char * comma = "";
170 
 
171 
  if (load_store)
172 
    mask = 0x80;
173 
  else
174 
    mask = 1;
175 
 
176 
  if (value & mask)
177 
    {
178 
      (*info->fprintf_func) (info->stream, "r%li", reg_index + offset);
179 
      comma = ",";
180 
    }
181 
 
182 
  for (reg_index = 1; reg_index <= 7; ++reg_index)
183 
    {
184 
      if (load_store)
185 
        mask >>= 1;
186 
      else
187 
        mask <<= 1;
188 
 
189 
      if (value & mask)
190 
        {
191 
          (*info->fprintf_func) (info->stream, "%sr%li", comma, reg_index + offset);
192 
          comma = ",";
193 
        }
194 
    }
195 
}
196 
 
197 
static void
198 
print_hi_register_list_ld (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
199 
                           void * dis_info,
200 
                           long value,
201 
                           unsigned int attrs ATTRIBUTE_UNUSED,
202 
                           bfd_vma pc ATTRIBUTE_UNUSED,
203 
                           int length ATTRIBUTE_UNUSED)
204 
{
205 
  print_register_list (dis_info, value, 8, 0 /* Load.  */);
206 
}
207 
 
208 
static void
209 
print_low_register_list_ld (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
210 
                            void * dis_info,
211 
                            long value,
212 
                            unsigned int attrs ATTRIBUTE_UNUSED,
213 
                            bfd_vma pc ATTRIBUTE_UNUSED,
214 
                            int length ATTRIBUTE_UNUSED)
215 
{
216 
  print_register_list (dis_info, value, 0, 0 /* Load.  */);
217 
}
218 
 
219 
static void
220 
print_hi_register_list_st (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
221 
                           void * dis_info,
222 
                           long value,
223 
                           unsigned int attrs ATTRIBUTE_UNUSED,
224 
                           bfd_vma pc ATTRIBUTE_UNUSED,
225 
                           int length ATTRIBUTE_UNUSED)
226 
{
227 
  print_register_list (dis_info, value, 8, 1 /* Store.  */);
228 
}
229 
 
230 
static void
231 
print_low_register_list_st (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
232 
                            void * dis_info,
233 
                            long value,
234 
                            unsigned int attrs ATTRIBUTE_UNUSED,
235 
                            bfd_vma pc ATTRIBUTE_UNUSED,
236 
                            int length ATTRIBUTE_UNUSED)
237 
{
238 
  print_register_list (dis_info, value, 0, 1 /* Store.  */);
239 
}
240 
 
241 
static void
242 
print_m4 (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
243 
          void * dis_info,
244 
          long value,
245 
          unsigned int attrs ATTRIBUTE_UNUSED,
246 
          bfd_vma pc ATTRIBUTE_UNUSED,
247 
          int length ATTRIBUTE_UNUSED)
248 
{
249 
  disassemble_info *info = (disassemble_info *) dis_info;
250 
 
251 
  (*info->fprintf_func) (info->stream, "%ld", value);
252 
}
253 
/* -- */

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.