OpenCores
URL https://opencores.org/ocsvn/or1k/or1k/trunk

Subversion Repositories or1k

[/] [or1k/] [trunk/] [gdb-5.0/] [gdb/] [tahoe-tdep.c] - Blame information for rev 1774

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

Line No. Rev Author Line
1 104 markom 
/* OBSOLETE /* Print instructions for Tahoe target machines, for GDB. */
2 
/* OBSOLETE    Copyright 1986, 1989, 1991, 1992, 2000 Free Software Foundation, Inc. */
3 
/* OBSOLETE    Contributed by the State University of New York at Buffalo, by the */
4 
/* OBSOLETE    Distributed Computer Systems Lab, Department of Computer Science, 1991. */
5 
/* OBSOLETE  */
6 
/* OBSOLETE    This file is part of GDB. */
7 
/* OBSOLETE  */
8 
/* OBSOLETE    This program is free software; you can redistribute it and/or modify */
9 
/* OBSOLETE    it under the terms of the GNU General Public License as published by */
10 
/* OBSOLETE    the Free Software Foundation; either version 2 of the License, or */
11 
/* OBSOLETE    (at your option) any later version. */
12 
/* OBSOLETE  */
13 
/* OBSOLETE    This program is distributed in the hope that it will be useful, */
14 
/* OBSOLETE    but WITHOUT ANY WARRANTY; without even the implied warranty of */
15 
/* OBSOLETE    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the */
16 
/* OBSOLETE    GNU General Public License for more details. */
17 
/* OBSOLETE  */
18 
/* OBSOLETE    You should have received a copy of the GNU General Public License */
19 
/* OBSOLETE    along with this program; if not, write to the Free Software */
20 
/* OBSOLETE    Foundation, Inc., 59 Temple Place - Suite 330, */
21 
/* OBSOLETE    Boston, MA 02111-1307, USA.  *x/ */
22 
/* OBSOLETE  */
23 
/* OBSOLETE #include "defs.h" */
24 
/* OBSOLETE #include "symtab.h" */
25 
/* OBSOLETE #include "opcode/tahoe.h" */
26 
/* OBSOLETE  */
27 
/* OBSOLETE /* Tahoe instructions are never longer than this.  *x/ */
28 
/* OBSOLETE #define MAXLEN 62 */
29 
/* OBSOLETE  */
30 
/* OBSOLETE /* Number of elements in the opcode table.  *x/ */
31 
/* OBSOLETE #define NOPCODES (sizeof votstrs / sizeof votstrs[0]) */
32 
/* OBSOLETE  */
33 
/* OBSOLETE static unsigned char *print_insn_arg (); */
34 
/* OBSOLETE  */
35 
/* OBSOLETE /* Advance PC across any function entry prologue instructions */
36 
/* OBSOLETE    to reach some "real" code.  *x/ */
37 
/* OBSOLETE  */
38 
/* OBSOLETE CORE_ADDR */
39 
/* OBSOLETE tahoe_skip_prologue (pc) */
40 
/* OBSOLETE      CORE_ADDR pc; */
41 
/* OBSOLETE { */
42 
/* OBSOLETE   register int op = (unsigned char) read_memory_integer (pc, 1); */
43 
/* OBSOLETE   if (op == 0x11) */
44 
/* OBSOLETE     pc += 2;                        /* skip brb *x/ */
45 
/* OBSOLETE   if (op == 0x13) */
46 
/* OBSOLETE     pc += 3;                        /* skip brw *x/ */
47 
/* OBSOLETE   if (op == 0x2c */
48 
/* OBSOLETE       && ((unsigned char) read_memory_integer (pc + 2, 1)) == 0x5e) */
49 
/* OBSOLETE     pc += 3;                        /* skip subl2 *x/ */
50 
/* OBSOLETE   if (op == 0xe9 */
51 
/* OBSOLETE       && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xae */
52 
/* OBSOLETE       && ((unsigned char) read_memory_integer (pc + 3, 1)) == 0x5e) */
53 
/* OBSOLETE     pc += 4;                        /* skip movab *x/ */
54 
/* OBSOLETE   if (op == 0xe9 */
55 
/* OBSOLETE       && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xce */
56 
/* OBSOLETE       && ((unsigned char) read_memory_integer (pc + 4, 1)) == 0x5e) */
57 
/* OBSOLETE     pc += 5;                        /* skip movab *x/ */
58 
/* OBSOLETE   if (op == 0xe9 */
59 
/* OBSOLETE       && ((unsigned char) read_memory_integer (pc + 1, 1)) == 0xee */
60 
/* OBSOLETE       && ((unsigned char) read_memory_integer (pc + 6, 1)) == 0x5e) */
61 
/* OBSOLETE     pc += 7;                        /* skip movab *x/ */
62 
/* OBSOLETE   return pc; */
63 
/* OBSOLETE } */
64 
/* OBSOLETE  */
65 
/* OBSOLETE /* Return number of args passed to a frame. */
66 
/* OBSOLETE    Can return -1, meaning no way to tell.  *x/ */
67 
/* OBSOLETE  */
68 
/* OBSOLETE int */
69 
/* OBSOLETE tahoe_frame_num_args (fi) */
70 
/* OBSOLETE      struct frame_info *fi; */
71 
/* OBSOLETE { */
72 
/* OBSOLETE   return (((0xffff & read_memory_integer (((fi)->frame - 4), 4)) - 4) >> 2); */
73 
/* OBSOLETE } */
74 
/* OBSOLETE  */
75 
/* OBSOLETE /* Print the Tahoe instruction at address MEMADDR in debugged memory, */
76 
/* OBSOLETE    on STREAM.  Returns length of the instruction, in bytes.  *x/ */
77 
/* OBSOLETE  */
78 
/* OBSOLETE int */
79 
/* OBSOLETE tahoe_print_insn (memaddr, stream) */
80 
/* OBSOLETE      CORE_ADDR memaddr; */
81 
/* OBSOLETE      struct ui_file *stream; */
82 
/* OBSOLETE { */
83 
/* OBSOLETE   unsigned char buffer[MAXLEN]; */
84 
/* OBSOLETE   register int i; */
85 
/* OBSOLETE   register unsigned char *p; */
86 
/* OBSOLETE   register char *d; */
87 
/* OBSOLETE  */
88 
/* OBSOLETE   read_memory (memaddr, buffer, MAXLEN); */
89 
/* OBSOLETE  */
90 
/* OBSOLETE   for (i = 0; i < NOPCODES; i++) */
91 
/* OBSOLETE     if (votstrs[i].detail.code == buffer[0] */
92 
/* OBSOLETE     || votstrs[i].detail.code == *(unsigned short *) buffer) */
93 
/* OBSOLETE       break; */
94 
/* OBSOLETE  */
95 
/* OBSOLETE   /* Handle undefined instructions.  *x/ */
96 
/* OBSOLETE   if (i == NOPCODES) */
97 
/* OBSOLETE     { */
98 
/* OBSOLETE       fprintf_unfiltered (stream, "0%o", buffer[0]); */
99 
/* OBSOLETE       return 1; */
100 
/* OBSOLETE     } */
101 
/* OBSOLETE  */
102 
/* OBSOLETE   fprintf_unfiltered (stream, "%s", votstrs[i].name); */
103 
/* OBSOLETE  */
104 
/* OBSOLETE   /* Point at first byte of argument data, */
105 
/* OBSOLETE      and at descriptor for first argument.  *x/ */
106 
/* OBSOLETE   p = buffer + 1 + (votstrs[i].detail.code >= 0x100); */
107 
/* OBSOLETE   d = votstrs[i].detail.args; */
108 
/* OBSOLETE  */
109 
/* OBSOLETE   if (*d) */
110 
/* OBSOLETE     fputc_unfiltered ('\t', stream); */
111 
/* OBSOLETE  */
112 
/* OBSOLETE   while (*d) */
113 
/* OBSOLETE     { */
114 
/* OBSOLETE       p = print_insn_arg (d, p, memaddr + (p - buffer), stream); */
115 
/* OBSOLETE       d += 2; */
116 
/* OBSOLETE       if (*d) */
117 
/* OBSOLETE     fprintf_unfiltered (stream, ","); */
118 
/* OBSOLETE     } */
119 
/* OBSOLETE   return p - buffer; */
120 
/* OBSOLETE } */
121 
/* OBSOLETE /*******************************************************************x/ */
122 
/* OBSOLETE static unsigned char * */
123 
/* OBSOLETE print_insn_arg (d, p, addr, stream) */
124 
/* OBSOLETE      char *d; */
125 
/* OBSOLETE      register char *p; */
126 
/* OBSOLETE      CORE_ADDR addr; */
127 
/* OBSOLETE      struct ui_file *stream; */
128 
/* OBSOLETE { */
129 
/* OBSOLETE   int temp1 = 0; */
130 
/* OBSOLETE   register int regnum = *p & 0xf; */
131 
/* OBSOLETE   float floatlitbuf; */
132 
/* OBSOLETE  */
133 
/* OBSOLETE   if (*d == 'b') */
134 
/* OBSOLETE     { */
135 
/* OBSOLETE       if (d[1] == 'b') */
136 
/* OBSOLETE     fprintf_unfiltered (stream, "0x%x", addr + *p++ + 1); */
137 
/* OBSOLETE       else */
138 
/* OBSOLETE     { */
139 
/* OBSOLETE  */
140 
/* OBSOLETE       temp1 = *p; */
141 
/* OBSOLETE       temp1 <<= 8; */
142 
/* OBSOLETE       temp1 |= *(p + 1); */
143 
/* OBSOLETE       fprintf_unfiltered (stream, "0x%x", addr + temp1 + 2); */
144 
/* OBSOLETE       p += 2; */
145 
/* OBSOLETE     } */
146 
/* OBSOLETE     } */
147 
/* OBSOLETE   else */
148 
/* OBSOLETE     switch ((*p++ >> 4) & 0xf) */
149 
/* OBSOLETE       { */
150 
/* OBSOLETE       case 0: */
151 
/* OBSOLETE       case 1: */
152 
/* OBSOLETE       case 2: */
153 
/* OBSOLETE       case 3:                       /* Literal (short immediate byte) mode *x/ */
154 
/* OBSOLETE     if (d[1] == 'd' || d[1] == 'f' || d[1] == 'g' || d[1] == 'h') */
155 
/* OBSOLETE       { */
156 
/* OBSOLETE         *(int *) &floatlitbuf = 0x4000 + ((p[-1] & 0x3f) << 4); */
157 
/* OBSOLETE         fprintf_unfiltered (stream, "$%f", floatlitbuf); */
158 
/* OBSOLETE       } */
159 
/* OBSOLETE     else */
160 
/* OBSOLETE       fprintf_unfiltered (stream, "$%d", p[-1] & 0x3f); */
161 
/* OBSOLETE     break; */
162 
/* OBSOLETE  */
163 
/* OBSOLETE       case 4:                       /* Indexed *x/ */
164 
/* OBSOLETE     p = (char *) print_insn_arg (d, p, addr + 1, stream); */
165 
/* OBSOLETE     fprintf_unfiltered (stream, "[%s]", REGISTER_NAME (regnum)); */
166 
/* OBSOLETE     break; */
167 
/* OBSOLETE  */
168 
/* OBSOLETE       case 5:                       /* Register *x/ */
169 
/* OBSOLETE     fprintf_unfiltered (stream, REGISTER_NAME (regnum)); */
170 
/* OBSOLETE     break; */
171 
/* OBSOLETE  */
172 
/* OBSOLETE       case 7:                       /* Autodecrement *x/ */
173 
/* OBSOLETE     fputc_unfiltered ('-', stream); */
174 
/* OBSOLETE       case 6:                       /* Register deferred *x/ */
175 
/* OBSOLETE     fprintf_unfiltered (stream, "(%s)", REGISTER_NAME (regnum)); */
176 
/* OBSOLETE     break; */
177 
/* OBSOLETE  */
178 
/* OBSOLETE       case 9:                       /* Absolute Address & Autoincrement deferred *x/ */
179 
/* OBSOLETE     fputc_unfiltered ('*', stream); */
180 
/* OBSOLETE     if (regnum == PC_REGNUM) */
181 
/* OBSOLETE       { */
182 
/* OBSOLETE         temp1 = *p; */
183 
/* OBSOLETE         temp1 <<= 8; */
184 
/* OBSOLETE         temp1 |= *(p + 1); */
185 
/* OBSOLETE  */
186 
/* OBSOLETE         fputc_unfiltered ('$', stream); */
187 
/* OBSOLETE         print_address (temp1, stream); */
188 
/* OBSOLETE         p += 4; */
189 
/* OBSOLETE         break; */
190 
/* OBSOLETE       } */
191 
/* OBSOLETE       case 8:                       /*Immediate & Autoincrement SP *x/ */
192 
/* OBSOLETE     if (regnum == 8)        /*88 is Immediate Byte Mode *x/ */
193 
/* OBSOLETE       fprintf_unfiltered (stream, "$%d", *p++); */
194 
/* OBSOLETE  */
195 
/* OBSOLETE     else if (regnum == 9)   /*89 is Immediate Word Mode *x/ */
196 
/* OBSOLETE       { */
197 
/* OBSOLETE         temp1 = *p; */
198 
/* OBSOLETE         temp1 <<= 8; */
199 
/* OBSOLETE         temp1 |= *(p + 1); */
200 
/* OBSOLETE         fprintf_unfiltered (stream, "$%d", temp1); */
201 
/* OBSOLETE         p += 2; */
202 
/* OBSOLETE       } */
203 
/* OBSOLETE  */
204 
/* OBSOLETE     else if (regnum == PC_REGNUM)   /*8F is Immediate Long Mode *x/ */
205 
/* OBSOLETE       { */
206 
/* OBSOLETE         temp1 = *p; */
207 
/* OBSOLETE         temp1 <<= 8; */
208 
/* OBSOLETE         temp1 |= *(p + 1); */
209 
/* OBSOLETE         temp1 <<= 8; */
210 
/* OBSOLETE         temp1 |= *(p + 2); */
211 
/* OBSOLETE         temp1 <<= 8; */
212 
/* OBSOLETE         temp1 |= *(p + 3); */
213 
/* OBSOLETE         fprintf_unfiltered (stream, "$%d", temp1); */
214 
/* OBSOLETE         p += 4; */
215 
/* OBSOLETE       } */
216 
/* OBSOLETE  */
217 
/* OBSOLETE     else                    /*8E is Autoincrement SP Mode *x/ */
218 
/* OBSOLETE       fprintf_unfiltered (stream, "(%s)+", REGISTER_NAME (regnum)); */
219 
/* OBSOLETE     break; */
220 
/* OBSOLETE  */
221 
/* OBSOLETE       case 11:                      /* Register + Byte Displacement Deferred Mode *x/ */
222 
/* OBSOLETE     fputc_unfiltered ('*', stream); */
223 
/* OBSOLETE       case 10:                      /* Register + Byte Displacement Mode *x/ */
224 
/* OBSOLETE     if (regnum == PC_REGNUM) */
225 
/* OBSOLETE       print_address (addr + *p + 2, stream); */
226 
/* OBSOLETE     else */
227 
/* OBSOLETE       fprintf_unfiltered (stream, "%d(%s)", *p, REGISTER_NAME (regnum)); */
228 
/* OBSOLETE     p += 1; */
229 
/* OBSOLETE     break; */
230 
/* OBSOLETE  */
231 
/* OBSOLETE       case 13:                      /* Register + Word Displacement Deferred Mode *x/ */
232 
/* OBSOLETE     fputc_unfiltered ('*', stream); */
233 
/* OBSOLETE       case 12:                      /* Register + Word Displacement Mode *x/ */
234 
/* OBSOLETE     temp1 = *p; */
235 
/* OBSOLETE     temp1 <<= 8; */
236 
/* OBSOLETE     temp1 |= *(p + 1); */
237 
/* OBSOLETE     if (regnum == PC_REGNUM) */
238 
/* OBSOLETE       print_address (addr + temp1 + 3, stream); */
239 
/* OBSOLETE     else */
240 
/* OBSOLETE       fprintf_unfiltered (stream, "%d(%s)", temp1, REGISTER_NAME (regnum)); */
241 
/* OBSOLETE     p += 2; */
242 
/* OBSOLETE     break; */
243 
/* OBSOLETE  */
244 
/* OBSOLETE       case 15:                      /* Register + Long Displacement Deferred Mode *x/ */
245 
/* OBSOLETE     fputc_unfiltered ('*', stream); */
246 
/* OBSOLETE       case 14:                      /* Register + Long Displacement Mode *x/ */
247 
/* OBSOLETE     temp1 = *p; */
248 
/* OBSOLETE     temp1 <<= 8; */
249 
/* OBSOLETE     temp1 |= *(p + 1); */
250 
/* OBSOLETE     temp1 <<= 8; */
251 
/* OBSOLETE     temp1 |= *(p + 2); */
252 
/* OBSOLETE     temp1 <<= 8; */
253 
/* OBSOLETE     temp1 |= *(p + 3); */
254 
/* OBSOLETE     if (regnum == PC_REGNUM) */
255 
/* OBSOLETE       print_address (addr + temp1 + 5, stream); */
256 
/* OBSOLETE     else */
257 
/* OBSOLETE       fprintf_unfiltered (stream, "%d(%s)", temp1, REGISTER_NAME (regnum)); */
258 
/* OBSOLETE     p += 4; */
259 
/* OBSOLETE       } */
260 
/* OBSOLETE  */
261 
/* OBSOLETE   return (unsigned char *) p; */
262 
/* OBSOLETE } */

powered by: WebSVN 2.1.0

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