1 |
dpavlin |
12 |
/* |
2 |
|
|
* Copyright (C) 2005 Anders Gavare. All rights reserved. |
3 |
|
|
* |
4 |
|
|
* Redistribution and use in source and binary forms, with or without |
5 |
|
|
* modification, are permitted provided that the following conditions are met: |
6 |
|
|
* |
7 |
|
|
* 1. Redistributions of source code must retain the above copyright |
8 |
|
|
* notice, this list of conditions and the following disclaimer. |
9 |
|
|
* 2. Redistributions in binary form must reproduce the above copyright |
10 |
|
|
* notice, this list of conditions and the following disclaimer in the |
11 |
|
|
* documentation and/or other materials provided with the distribution. |
12 |
|
|
* 3. The name of the author may not be used to endorse or promote products |
13 |
|
|
* derived from this software without specific prior written permission. |
14 |
|
|
* |
15 |
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
16 |
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
17 |
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
18 |
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
19 |
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
20 |
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
21 |
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
22 |
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
23 |
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
24 |
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
25 |
|
|
* SUCH DAMAGE. |
26 |
|
|
* |
27 |
|
|
* |
28 |
|
|
* $Id: cpu_m68k.c,v 1.5 2005/08/15 06:33:21 debug Exp $ |
29 |
|
|
* |
30 |
|
|
* Motorola 68K CPU emulation. |
31 |
|
|
*/ |
32 |
|
|
|
33 |
|
|
#include <stdio.h> |
34 |
|
|
#include <stdlib.h> |
35 |
|
|
#include <string.h> |
36 |
|
|
#include <ctype.h> |
37 |
|
|
|
38 |
|
|
#include "misc.h" |
39 |
|
|
|
40 |
|
|
|
41 |
|
|
#ifndef ENABLE_M68K |
42 |
|
|
|
43 |
|
|
|
44 |
|
|
#include "cpu_m68k.h" |
45 |
|
|
|
46 |
|
|
|
47 |
|
|
/* |
48 |
|
|
* m68k_cpu_family_init(): |
49 |
|
|
* |
50 |
|
|
* Bogus function. |
51 |
|
|
*/ |
52 |
|
|
int m68k_cpu_family_init(struct cpu_family *fp) |
53 |
|
|
{ |
54 |
|
|
return 0; |
55 |
|
|
} |
56 |
|
|
|
57 |
|
|
|
58 |
|
|
#else /* ENABLE_M68K */ |
59 |
|
|
|
60 |
|
|
|
61 |
|
|
#include "cpu.h" |
62 |
|
|
#include "cpu_m68k.h" |
63 |
|
|
#include "machine.h" |
64 |
|
|
#include "memory.h" |
65 |
|
|
#include "symbol.h" |
66 |
|
|
|
67 |
|
|
#define DYNTRANS_32 |
68 |
|
|
#define DYNTRANS_VARIABLE_INSTRUCTION_LENGTH |
69 |
|
|
#include "tmp_m68k_head.c" |
70 |
|
|
|
71 |
|
|
|
72 |
|
|
static char *m68k_aname[] = { "a0", "a1", "a2", "a3", "a4", "a5", "fp", "a7" }; |
73 |
|
|
|
74 |
|
|
|
75 |
|
|
/* |
76 |
|
|
* m68k_cpu_new(): |
77 |
|
|
* |
78 |
|
|
* Create a new M68K cpu object. |
79 |
|
|
* |
80 |
|
|
* Returns 1 on success, 0 if there was no matching M68K processor with |
81 |
|
|
* this cpu_type_name. |
82 |
|
|
*/ |
83 |
|
|
int m68k_cpu_new(struct cpu *cpu, struct memory *mem, struct machine *machine, |
84 |
|
|
int cpu_id, char *cpu_type_name) |
85 |
|
|
{ |
86 |
|
|
if (strcasecmp(cpu_type_name, "68020") != 0) |
87 |
|
|
return 0; |
88 |
|
|
|
89 |
|
|
cpu->memory_rw = m68k_memory_rw; |
90 |
|
|
cpu->update_translation_table = m68k_update_translation_table; |
91 |
|
|
cpu->invalidate_translation_caches_paddr = |
92 |
|
|
m68k_invalidate_translation_caches_paddr; |
93 |
|
|
cpu->invalidate_code_translation_caches = |
94 |
|
|
m68k_invalidate_code_translation_caches; |
95 |
|
|
cpu->is_32bit = 1; |
96 |
|
|
|
97 |
|
|
cpu->byte_order = EMUL_BIG_ENDIAN; |
98 |
|
|
|
99 |
|
|
/* Only show name and caches etc for CPU nr 0 (in SMP machines): */ |
100 |
|
|
if (cpu_id == 0) { |
101 |
|
|
debug("%s", cpu->name); |
102 |
|
|
} |
103 |
|
|
|
104 |
|
|
return 1; |
105 |
|
|
} |
106 |
|
|
|
107 |
|
|
|
108 |
|
|
/* |
109 |
|
|
* m68k_cpu_list_available_types(): |
110 |
|
|
* |
111 |
|
|
* Print a list of available M68K CPU types. |
112 |
|
|
*/ |
113 |
|
|
void m68k_cpu_list_available_types(void) |
114 |
|
|
{ |
115 |
|
|
debug("68020\n"); |
116 |
|
|
/* TODO */ |
117 |
|
|
} |
118 |
|
|
|
119 |
|
|
|
120 |
|
|
/* |
121 |
|
|
* m68k_cpu_dumpinfo(): |
122 |
|
|
*/ |
123 |
|
|
void m68k_cpu_dumpinfo(struct cpu *cpu) |
124 |
|
|
{ |
125 |
|
|
/* TODO */ |
126 |
|
|
debug("\n"); |
127 |
|
|
} |
128 |
|
|
|
129 |
|
|
|
130 |
|
|
/* |
131 |
|
|
* m68k_cpu_register_dump(): |
132 |
|
|
* |
133 |
|
|
* Dump cpu registers in a relatively readable format. |
134 |
|
|
* |
135 |
|
|
* gprs: set to non-zero to dump GPRs and some special-purpose registers. |
136 |
|
|
* coprocs: set bit 0..3 to dump registers in coproc 0..3. |
137 |
|
|
*/ |
138 |
|
|
void m68k_cpu_register_dump(struct cpu *cpu, int gprs, int coprocs) |
139 |
|
|
{ |
140 |
|
|
char *symbol; |
141 |
|
|
uint64_t offset; |
142 |
|
|
int x = cpu->cpu_id; |
143 |
|
|
|
144 |
|
|
if (gprs) { |
145 |
|
|
/* Special registers (pc, ...) first: */ |
146 |
|
|
symbol = get_symbol_name(&cpu->machine->symbol_context, |
147 |
|
|
cpu->pc, &offset); |
148 |
|
|
|
149 |
|
|
debug("cpu%i: pc = 0x%08x", x, (int)cpu->pc); |
150 |
|
|
debug(" <%s>\n", symbol != NULL? symbol : " no symbol "); |
151 |
|
|
} |
152 |
|
|
} |
153 |
|
|
|
154 |
|
|
|
155 |
|
|
/* |
156 |
|
|
* m68k_cpu_register_match(): |
157 |
|
|
*/ |
158 |
|
|
void m68k_cpu_register_match(struct machine *m, char *name, |
159 |
|
|
int writeflag, uint64_t *valuep, int *match_register) |
160 |
|
|
{ |
161 |
|
|
int cpunr = 0; |
162 |
|
|
|
163 |
|
|
/* CPU number: */ |
164 |
|
|
|
165 |
|
|
/* TODO */ |
166 |
|
|
|
167 |
|
|
/* Register name: */ |
168 |
|
|
if (strcasecmp(name, "pc") == 0) { |
169 |
|
|
if (writeflag) { |
170 |
|
|
m->cpus[cpunr]->pc = *valuep; |
171 |
|
|
} else |
172 |
|
|
*valuep = m->cpus[cpunr]->pc; |
173 |
|
|
*match_register = 1; |
174 |
|
|
} |
175 |
|
|
} |
176 |
|
|
|
177 |
|
|
|
178 |
|
|
/* |
179 |
|
|
* m68k_cpu_show_full_statistics(): |
180 |
|
|
* |
181 |
|
|
* Show detailed statistics on opcode usage on each cpu. |
182 |
|
|
*/ |
183 |
|
|
void m68k_cpu_show_full_statistics(struct machine *m) |
184 |
|
|
{ |
185 |
|
|
fatal("m68k_cpu_show_full_statistics(): TODO\n"); |
186 |
|
|
} |
187 |
|
|
|
188 |
|
|
|
189 |
|
|
/* |
190 |
|
|
* m68k_cpu_tlbdump(): |
191 |
|
|
* |
192 |
|
|
* Called from the debugger to dump the TLB in a readable format. |
193 |
|
|
* x is the cpu number to dump, or -1 to dump all CPUs. |
194 |
|
|
* |
195 |
|
|
* If rawflag is nonzero, then the TLB contents isn't formated nicely, |
196 |
|
|
* just dumped. |
197 |
|
|
*/ |
198 |
|
|
void m68k_cpu_tlbdump(struct machine *m, int x, int rawflag) |
199 |
|
|
{ |
200 |
|
|
fatal("m68k_cpu_tlbdump(): TODO\n"); |
201 |
|
|
} |
202 |
|
|
|
203 |
|
|
|
204 |
|
|
/* |
205 |
|
|
* m68k_cpu_interrupt(): |
206 |
|
|
*/ |
207 |
|
|
int m68k_cpu_interrupt(struct cpu *cpu, uint64_t irq_nr) |
208 |
|
|
{ |
209 |
|
|
fatal("m68k_cpu_interrupt(): TODO\n"); |
210 |
|
|
return 0; |
211 |
|
|
} |
212 |
|
|
|
213 |
|
|
|
214 |
|
|
/* |
215 |
|
|
* m68k_cpu_interrupt_ack(): |
216 |
|
|
*/ |
217 |
|
|
int m68k_cpu_interrupt_ack(struct cpu *cpu, uint64_t irq_nr) |
218 |
|
|
{ |
219 |
|
|
/* fatal("m68k_cpu_interrupt_ack(): TODO\n"); */ |
220 |
|
|
return 0; |
221 |
|
|
} |
222 |
|
|
|
223 |
|
|
|
224 |
|
|
/* Helper functions: */ |
225 |
|
|
void print_two(unsigned char *instr, int *len) |
226 |
|
|
{ debug(" %02x%02x", instr[*len], instr[*len+1]); (*len) += 2; } |
227 |
|
|
void print_spaces(int len) { int i; debug(" "); for (i=0; i<16-len/2*5; |
228 |
|
|
i++) debug(" "); } |
229 |
|
|
|
230 |
|
|
|
231 |
|
|
/* |
232 |
|
|
* m68k_cpu_disassemble_instr(): |
233 |
|
|
* |
234 |
|
|
* Convert an instruction word into human readable format, for instruction |
235 |
|
|
* tracing. |
236 |
|
|
* |
237 |
|
|
* If running is 1, cpu->pc should be the address of the instruction. |
238 |
|
|
* |
239 |
|
|
* If running is 0, things that depend on the runtime environment (eg. |
240 |
|
|
* register contents) will not be shown, and addr will be used instead of |
241 |
|
|
* cpu->pc for relative addresses. |
242 |
|
|
*/ |
243 |
|
|
int m68k_cpu_disassemble_instr(struct cpu *cpu, unsigned char *ib, |
244 |
|
|
int running, uint64_t dumpaddr, int bintrans) |
245 |
|
|
{ |
246 |
|
|
uint64_t offset; |
247 |
|
|
int len = 0; |
248 |
|
|
char *symbol; |
249 |
|
|
|
250 |
|
|
if (running) |
251 |
|
|
dumpaddr = cpu->pc; |
252 |
|
|
|
253 |
|
|
symbol = get_symbol_name(&cpu->machine->symbol_context, |
254 |
|
|
dumpaddr, &offset); |
255 |
|
|
if (symbol != NULL && offset==0) |
256 |
|
|
debug("<%s>\n", symbol); |
257 |
|
|
|
258 |
|
|
if (cpu->machine->ncpus > 1 && running) |
259 |
|
|
debug("cpu%i: ", cpu->cpu_id); |
260 |
|
|
|
261 |
|
|
debug("0x%08x: ", (int)dumpaddr); |
262 |
|
|
|
263 |
|
|
print_two(ib, &len); |
264 |
|
|
|
265 |
|
|
if (ib[0] == 0x48) { |
266 |
|
|
if (ib[1] >= 0x40 && ib[1] <= 0x47) { |
267 |
|
|
print_spaces(len); |
268 |
|
|
debug("swap\td%i\n", ib[1] & 7); |
269 |
|
|
} else if (ib[1] >= 0x48 && ib[1] <= 0x4f) { |
270 |
|
|
print_spaces(len); |
271 |
|
|
debug("bkpt\t#%i\n", ib[1] & 7); |
272 |
|
|
} else { |
273 |
|
|
print_spaces(len); |
274 |
|
|
debug("UNIMPLEMENTED 0x%02x%02x\n", ib[0], ib[1]); |
275 |
|
|
} |
276 |
|
|
} else if (ib[0] == 0x4a) { |
277 |
|
|
if (ib[1] == 0xfc) { |
278 |
|
|
print_spaces(len); |
279 |
|
|
debug("illegal\n"); |
280 |
|
|
} else { |
281 |
|
|
print_spaces(len); |
282 |
|
|
debug("UNIMPLEMENTED 0x%02x%02x\n", ib[0], ib[1]); |
283 |
|
|
} |
284 |
|
|
} else if (ib[0] == 0x4e) { |
285 |
|
|
if (ib[1] >= 0x40 && ib[1] <= 0x4f) { |
286 |
|
|
print_spaces(len); |
287 |
|
|
debug("trap\t#%i\n", ib[1] & 15); |
288 |
|
|
} else if (ib[1] >= 0x50 && ib[1] <= 0x57) { |
289 |
|
|
print_two(ib, &len); |
290 |
|
|
print_spaces(len); |
291 |
|
|
debug("linkw\t%%%s,#%i\n", m68k_aname[ib[1] & 7], |
292 |
|
|
((ib[2] << 8) + ib[3])); |
293 |
|
|
} else if (ib[1] >= 0x58 && ib[1] <= 0x5f) { |
294 |
|
|
print_spaces(len); |
295 |
|
|
debug("unlk\t%%%s\n", m68k_aname[ib[1] & 7]); |
296 |
|
|
} else if (ib[1] == 0x70) { |
297 |
|
|
print_spaces(len); |
298 |
|
|
debug("reset\n"); |
299 |
|
|
} else if (ib[1] == 0x71) { |
300 |
|
|
print_spaces(len); |
301 |
|
|
debug("nop\n"); |
302 |
|
|
} else if (ib[1] == 0x72) { |
303 |
|
|
print_two(ib, &len); |
304 |
|
|
print_spaces(len); |
305 |
|
|
debug("stop\t#0x%04x\n", ((ib[2] << 8) + ib[3])); |
306 |
|
|
} else if (ib[1] == 0x73) { |
307 |
|
|
print_spaces(len); |
308 |
|
|
debug("rte\n"); |
309 |
|
|
} else if (ib[1] == 0x74) { |
310 |
|
|
print_two(ib, &len); |
311 |
|
|
print_spaces(len); |
312 |
|
|
debug("rtd\t#0x%04x\n", ((ib[2] << 8) + ib[3])); |
313 |
|
|
} else if (ib[1] == 0x75) { |
314 |
|
|
print_spaces(len); |
315 |
|
|
debug("rts\n"); |
316 |
|
|
} else { |
317 |
|
|
print_spaces(len); |
318 |
|
|
debug("UNIMPLEMENTED 0x%02x%02x\n", ib[0], ib[1]); |
319 |
|
|
} |
320 |
|
|
} else { |
321 |
|
|
print_spaces(len); |
322 |
|
|
debug("UNIMPLEMENTED 0x%02x%02x\n", ib[0], ib[1]); |
323 |
|
|
} |
324 |
|
|
|
325 |
|
|
return len; |
326 |
|
|
} |
327 |
|
|
|
328 |
|
|
|
329 |
|
|
#include "tmp_m68k_tail.c" |
330 |
|
|
|
331 |
|
|
|
332 |
|
|
#endif /* ENABLE_M68K */ |