0.3.5/src/cpu_m68k.c

/*
 *  Copyright (C) 2005  Anders Gavare.  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright  
 *     notice, this list of conditions and the following disclaimer in the 
 *     documentation and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 *  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE   
 *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 *  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 *  OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 *  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 *  SUCH DAMAGE.
 *
 *
 *  $Id: cpu_m68k.c,v 1.5 2005/08/15 06:33:21 debug Exp $
 *
 *  Motorola 68K CPU emulation.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

#include "misc.h"


#ifndef ENABLE_M68K


#include "cpu_m68k.h"


/*
 *  m68k_cpu_family_init():
 *
 *  Bogus function.
 */
int m68k_cpu_family_init(struct cpu_family *fp)
{
        return 0;
}


#else   /*  ENABLE_M68K  */


#include "cpu.h"
#include "cpu_m68k.h"
#include "machine.h"
#include "memory.h"
#include "symbol.h"

#define DYNTRANS_32
#define DYNTRANS_VARIABLE_INSTRUCTION_LENGTH
#include "tmp_m68k_head.c"


static char *m68k_aname[] = { "a0", "a1", "a2", "a3", "a4", "a5", "fp", "a7" };


/*
 *  m68k_cpu_new():
 *
 *  Create a new M68K cpu object.
 *
 *  Returns 1 on success, 0 if there was no matching M68K processor with
 *  this cpu_type_name.
 */
int m68k_cpu_new(struct cpu *cpu, struct memory *mem, struct machine *machine,
        int cpu_id, char *cpu_type_name)
{
        if (strcasecmp(cpu_type_name, "68020") != 0)
                return 0;

        cpu->memory_rw = m68k_memory_rw;
        cpu->update_translation_table = m68k_update_translation_table;
        cpu->invalidate_translation_caches_paddr =
            m68k_invalidate_translation_caches_paddr;
        cpu->invalidate_code_translation_caches =
            m68k_invalidate_code_translation_caches;
        cpu->is_32bit = 1;

        cpu->byte_order = EMUL_BIG_ENDIAN;

        /*  Only show name and caches etc for CPU nr 0 (in SMP machines):  */
        if (cpu_id == 0) {
                debug("%s", cpu->name);
        }

        return 1;
}


/*
 *  m68k_cpu_list_available_types():
 *
 *  Print a list of available M68K CPU types.
 */
void m68k_cpu_list_available_types(void)
{
        debug("68020\n");
        /*  TODO  */
}


/*
 *  m68k_cpu_dumpinfo():
 */
void m68k_cpu_dumpinfo(struct cpu *cpu)
{
        /*  TODO  */
        debug("\n");
}


/*
 *  m68k_cpu_register_dump():
 *
 *  Dump cpu registers in a relatively readable format.
 *
 *  gprs: set to non-zero to dump GPRs and some special-purpose registers.
 *  coprocs: set bit 0..3 to dump registers in coproc 0..3.
 */
void m68k_cpu_register_dump(struct cpu *cpu, int gprs, int coprocs)
{
        char *symbol;
        uint64_t offset;
        int x = cpu->cpu_id;

        if (gprs) {
                /*  Special registers (pc, ...) first:  */
                symbol = get_symbol_name(&cpu->machine->symbol_context,
                    cpu->pc, &offset);

                debug("cpu%i: pc  = 0x%08x", x, (int)cpu->pc);
                debug("  <%s>\n", symbol != NULL? symbol : " no symbol ");
        }
}


/*
 *  m68k_cpu_register_match():
 */
void m68k_cpu_register_match(struct machine *m, char *name,
        int writeflag, uint64_t *valuep, int *match_register)
{
        int cpunr = 0;

        /*  CPU number:  */

        /*  TODO  */

        /*  Register name:  */
        if (strcasecmp(name, "pc") == 0) {
                if (writeflag) {
                        m->cpus[cpunr]->pc = *valuep;
                } else
                        *valuep = m->cpus[cpunr]->pc;
                *match_register = 1;
        }
}


/*
 *  m68k_cpu_show_full_statistics():
 *
 *  Show detailed statistics on opcode usage on each cpu.
 */
void m68k_cpu_show_full_statistics(struct machine *m)
{
        fatal("m68k_cpu_show_full_statistics(): TODO\n");
}


/*
 *  m68k_cpu_tlbdump():
 *
 *  Called from the debugger to dump the TLB in a readable format.
 *  x is the cpu number to dump, or -1 to dump all CPUs.
 *
 *  If rawflag is nonzero, then the TLB contents isn't formated nicely,
 *  just dumped.
 */
void m68k_cpu_tlbdump(struct machine *m, int x, int rawflag)
{
        fatal("m68k_cpu_tlbdump(): TODO\n");
}


/*
 *  m68k_cpu_interrupt():
 */
int m68k_cpu_interrupt(struct cpu *cpu, uint64_t irq_nr)
{
        fatal("m68k_cpu_interrupt(): TODO\n");
        return 0;
}


/*
 *  m68k_cpu_interrupt_ack():
 */
int m68k_cpu_interrupt_ack(struct cpu *cpu, uint64_t irq_nr)
{
        /*  fatal("m68k_cpu_interrupt_ack(): TODO\n");  */
        return 0;
}


/*  Helper functions:  */
void print_two(unsigned char *instr, int *len)
{ debug(" %02x%02x", instr[*len], instr[*len+1]); (*len) += 2; }
void print_spaces(int len) { int i; debug(" "); for (i=0; i<16-len/2*5;
    i++) debug(" "); }


/*
 *  m68k_cpu_disassemble_instr():
 *
 *  Convert an instruction word into human readable format, for instruction
 *  tracing.
 *
 *  If running is 1, cpu->pc should be the address of the instruction.
 *
 *  If running is 0, things that depend on the runtime environment (eg.
 *  register contents) will not be shown, and addr will be used instead of
 *  cpu->pc for relative addresses.
 */
int m68k_cpu_disassemble_instr(struct cpu *cpu, unsigned char *ib,
        int running, uint64_t dumpaddr, int bintrans)
{
        uint64_t offset;
        int len = 0;
        char *symbol;

        if (running)
                dumpaddr = cpu->pc;

        symbol = get_symbol_name(&cpu->machine->symbol_context,
            dumpaddr, &offset);
        if (symbol != NULL && offset==0)
                debug("<%s>\n", symbol);

        if (cpu->machine->ncpus > 1 && running)
                debug("cpu%i: ", cpu->cpu_id);

        debug("0x%08x: ", (int)dumpaddr);

        print_two(ib, &len);

        if (ib[0] == 0x48) {
                if (ib[1] >= 0x40 && ib[1] <= 0x47) {
                        print_spaces(len);
                        debug("swap\td%i\n", ib[1] & 7);
                } else if (ib[1] >= 0x48 && ib[1] <= 0x4f) {
                        print_spaces(len);
                        debug("bkpt\t#%i\n", ib[1] & 7);
                } else {
                        print_spaces(len);
                        debug("UNIMPLEMENTED 0x%02x%02x\n", ib[0], ib[1]);
                }
        } else if (ib[0] == 0x4a) {
                if (ib[1] == 0xfc) {
                        print_spaces(len);
                        debug("illegal\n");
                } else {
                        print_spaces(len);
                        debug("UNIMPLEMENTED 0x%02x%02x\n", ib[0], ib[1]);
                }
        } else if (ib[0] == 0x4e) {
                if (ib[1] >= 0x40 && ib[1] <= 0x4f) {
                        print_spaces(len);
                        debug("trap\t#%i\n", ib[1] & 15);
                } else if (ib[1] >= 0x50 && ib[1] <= 0x57) {
                        print_two(ib, &len);
                        print_spaces(len);
                        debug("linkw\t%%%s,#%i\n", m68k_aname[ib[1] & 7],
                            ((ib[2] << 8) + ib[3]));
                } else if (ib[1] >= 0x58 && ib[1] <= 0x5f) {
                        print_spaces(len);
                        debug("unlk\t%%%s\n", m68k_aname[ib[1] & 7]);
                } else if (ib[1] == 0x70) {
                        print_spaces(len);
                        debug("reset\n");
                } else if (ib[1] == 0x71) {
                        print_spaces(len);
                        debug("nop\n");
                } else if (ib[1] == 0x72) {
                        print_two(ib, &len);
                        print_spaces(len);
                        debug("stop\t#0x%04x\n", ((ib[2] << 8) + ib[3]));
                } else if (ib[1] == 0x73) {
                        print_spaces(len);
                        debug("rte\n");
                } else if (ib[1] == 0x74) {
                        print_two(ib, &len);
                        print_spaces(len);
                        debug("rtd\t#0x%04x\n", ((ib[2] << 8) + ib[3]));
                } else if (ib[1] == 0x75) {
                        print_spaces(len);
                        debug("rts\n");
                } else {
                        print_spaces(len);
                        debug("UNIMPLEMENTED 0x%02x%02x\n", ib[0], ib[1]);
                }
        } else {
                print_spaces(len);
                debug("UNIMPLEMENTED 0x%02x%02x\n", ib[0], ib[1]);
        }

        return len;
}


#include "tmp_m68k_tail.c"


#endif  /*  ENABLE_M68K  */
1	/*
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 */