src/cpus/cpu_i960.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_i960.c,v 1.3 2005/10/22 17:24:20 debug Exp $
 *
 *  Intel i960 CPU emulation.
 */

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

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

#define DYNTRANS_32
#define DYNTRANS_VARIABLE_INSTRUCTION_LENGTH
#include "tmp_i960_head.c"


/*
 *  i960_cpu_new():
 *
 *  Create a new I960 cpu object.
 *
 *  Returns 1 on success, 0 if there was no matching I960 processor with
 *  this cpu_type_name.
 */
int i960_cpu_new(struct cpu *cpu, struct memory *mem, struct machine *machine,
        int cpu_id, char *cpu_type_name)
{
        if (strcasecmp(cpu_type_name, "i960") != 0)
                return 0;

        cpu->memory_rw = i960_memory_rw;
        cpu->update_translation_table = i960_update_translation_table;
        cpu->invalidate_translation_caches =
            i960_invalidate_translation_caches;
        cpu->invalidate_code_translation = i960_invalidate_code_translation;
        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;
}


/*
 *  i960_cpu_list_available_types():
 *
 *  Print a list of available I960 CPU types.
 */
void i960_cpu_list_available_types(void)
{
        debug("i960\n");
        /*  TODO  */
}


/*
 *  i960_cpu_dumpinfo():
 */
void i960_cpu_dumpinfo(struct cpu *cpu)
{
        /*  TODO  */
        debug("\n");
}


/*
 *  i960_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 i960_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 ");
        }
}


/*
 *  i960_cpu_register_match():
 */
void i960_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;
        }
}


/*
 *  i960_cpu_show_full_statistics():
 *
 *  Show detailed statistics on opcode usage on each cpu.
 */
void i960_cpu_show_full_statistics(struct machine *m)
{
        fatal("i960_cpu_show_full_statistics(): TODO\n");
}


/*
 *  i960_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 i960_cpu_tlbdump(struct machine *m, int x, int rawflag)
{
        fatal("i960_cpu_tlbdump(): TODO\n");
}


/*
 *  i960_cpu_interrupt():
 */
int i960_cpu_interrupt(struct cpu *cpu, uint64_t irq_nr)
{
        fatal("i960_cpu_interrupt(): TODO\n");
        return 0;
}


/*
 *  i960_cpu_interrupt_ack():
 */
int i960_cpu_interrupt_ack(struct cpu *cpu, uint64_t irq_nr)
{
        /*  fatal("i960_cpu_interrupt_ack(): TODO\n");  */
        return 0;
}


/*  Helper functions:  */
static void print_four(unsigned char *instr, int *len)
{ debug(" %02x%02x%02x%02x", instr[*len], instr[*len+1],
        instr[*len+2], instr[*len+3]); (*len) += 4; }
static void print_spaces(int len) { int i; debug(" "); for (i=0; i<16-len/2*5;
    i++) debug(" "); }


/*
 *  i960_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 i960_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_four(ib, &len);

        /*  TODO  */
        print_spaces(len);
        debug("UNIMPLEMENTED 0x%02x%02x\n", ib[0], ib[1]);

        return len;
}


#include "tmp_i960_tail.c"

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_i960.c,v 1.3 2005/10/22 17:24:20 debug Exp $
29	*
30	* Intel i960 CPU emulation.
31	*/
32
33	#include <stdio.h>
34	#include <stdlib.h>
35	#include <string.h>
36	#include <ctype.h>
37
38	#include "cpu.h"
39	#include "machine.h"
40	#include "memory.h"
41	#include "misc.h"
42	#include "symbol.h"
43
44	#define DYNTRANS_32
45	#define DYNTRANS_VARIABLE_INSTRUCTION_LENGTH
46	#include "tmp_i960_head.c"
47
48
49	/*
50	* i960_cpu_new():
51	*
52	* Create a new I960 cpu object.
53	*
54	* Returns 1 on success, 0 if there was no matching I960 processor with
55	* this cpu_type_name.
56	*/
57	int i960_cpu_new(struct cpu cpu, struct memory mem, struct machine *machine,
58	int cpu_id, char *cpu_type_name)
59	{
60	if (strcasecmp(cpu_type_name, "i960") != 0)
61	return 0;
62
63	cpu->memory_rw = i960_memory_rw;
64	cpu->update_translation_table = i960_update_translation_table;
65	cpu->invalidate_translation_caches =
66	i960_invalidate_translation_caches;
67	cpu->invalidate_code_translation = i960_invalidate_code_translation;
68	cpu->is_32bit = 1;
69
70	cpu->byte_order = EMUL_BIG_ENDIAN;
71
72	/* Only show name and caches etc for CPU nr 0 (in SMP machines): */
73	if (cpu_id == 0) {
74	debug("%s", cpu->name);
75	}
76
77	return 1;
78	}
79
80
81	/*
82	* i960_cpu_list_available_types():
83	*
84	* Print a list of available I960 CPU types.
85	*/
86	void i960_cpu_list_available_types(void)
87	{
88	debug("i960\n");
89	/* TODO */
90	}
91
92
93	/*
94	* i960_cpu_dumpinfo():
95	*/
96	void i960_cpu_dumpinfo(struct cpu *cpu)
97	{
98	/* TODO */
99	debug("\n");
100	}
101
102
103	/*
104	* i960_cpu_register_dump():
105	*
106	* Dump cpu registers in a relatively readable format.
107	*
108	* gprs: set to non-zero to dump GPRs and some special-purpose registers.
109	* coprocs: set bit 0..3 to dump registers in coproc 0..3.
110	*/
111	void i960_cpu_register_dump(struct cpu *cpu, int gprs, int coprocs)
112	{
113	char *symbol;
114	uint64_t offset;
115	int x = cpu->cpu_id;
116
117	if (gprs) {
118	/* Special registers (pc, ...) first: */
119	symbol = get_symbol_name(&cpu->machine->symbol_context,
120	cpu->pc, &offset);
121
122	debug("cpu%i: pc = 0x%08x", x, (int)cpu->pc);
123	debug(" <%s>\n", symbol != NULL? symbol : " no symbol ");
124	}
125	}
126
127
128	/*
129	* i960_cpu_register_match():
130	*/
131	void i960_cpu_register_match(struct machine m, char name,
132	int writeflag, uint64_t valuep, int match_register)
133	{
134	int cpunr = 0;
135
136	/* CPU number: */
137
138	/* TODO */
139
140	/* Register name: */
141	if (strcasecmp(name, "pc") == 0) {
142	if (writeflag) {
143	m->cpus[cpunr]->pc = *valuep;
144	} else
145	*valuep = m->cpus[cpunr]->pc;
146	*match_register = 1;
147	}
148	}
149
150
151	/*
152	* i960_cpu_show_full_statistics():
153	*
154	* Show detailed statistics on opcode usage on each cpu.
155	*/
156	void i960_cpu_show_full_statistics(struct machine *m)
157	{
158	fatal("i960_cpu_show_full_statistics(): TODO\n");
159	}
160
161
162	/*
163	* i960_cpu_tlbdump():
164	*
165	* Called from the debugger to dump the TLB in a readable format.
166	* x is the cpu number to dump, or -1 to dump all CPUs.
167	*
168	* If rawflag is nonzero, then the TLB contents isn't formated nicely,
169	* just dumped.
170	*/
171	void i960_cpu_tlbdump(struct machine *m, int x, int rawflag)
172	{
173	fatal("i960_cpu_tlbdump(): TODO\n");
174	}
175
176
177	/*
178	* i960_cpu_interrupt():
179	*/
180	int i960_cpu_interrupt(struct cpu *cpu, uint64_t irq_nr)
181	{
182	fatal("i960_cpu_interrupt(): TODO\n");
183	return 0;
184	}
185
186
187	/*
188	* i960_cpu_interrupt_ack():
189	*/
190	int i960_cpu_interrupt_ack(struct cpu *cpu, uint64_t irq_nr)
191	{
192	/* fatal("i960_cpu_interrupt_ack(): TODO\n"); */
193	return 0;
194	}
195
196
197	/* Helper functions: */
198	static void print_four(unsigned char instr, int len)
199	{ debug(" %02x%02x%02x%02x", instr[len], instr[len+1],
200	instr[len+2], instr[len+3]); (*len) += 4; }
201	static void print_spaces(int len) { int i; debug(" "); for (i=0; i<16-len/2*5;
202	i++) debug(" "); }
203
204
205	/*
206	* i960_cpu_disassemble_instr():
207	*
208	* Convert an instruction word into human readable format, for instruction
209	* tracing.
210	*
211	* If running is 1, cpu->pc should be the address of the instruction.
212	*
213	* If running is 0, things that depend on the runtime environment (eg.
214	* register contents) will not be shown, and addr will be used instead of
215	* cpu->pc for relative addresses.
216	*/
217	int i960_cpu_disassemble_instr(struct cpu cpu, unsigned char ib,
218	int running, uint64_t dumpaddr, int bintrans)
219	{
220	uint64_t offset;
221	int len = 0;
222	char *symbol;
223
224	if (running)
225	dumpaddr = cpu->pc;
226
227	symbol = get_symbol_name(&cpu->machine->symbol_context,
228	dumpaddr, &offset);
229	if (symbol != NULL && offset==0)
230	debug("<%s>\n", symbol);
231
232	if (cpu->machine->ncpus > 1 && running)
233	debug("cpu%i: ", cpu->cpu_id);
234
235	debug("0x%08x: ", (int)dumpaddr);
236
237	print_four(ib, &len);
238
239	/* TODO */
240	print_spaces(len);
241	debug("UNIMPLEMENTED 0x%02x%02x\n", ib[0], ib[1]);
242
243	return len;
244	}
245
246
247	#include "tmp_i960_tail.c"
248