1 |
/* |
2 |
* Copyright (C) 2005-2006 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 1.11 2006/07/20 21:52:59 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->run_instr = i960_run_instr; |
64 |
cpu->memory_rw = i960_memory_rw; |
65 |
cpu->update_translation_table = i960_update_translation_table; |
66 |
cpu->invalidate_translation_caches = |
67 |
i960_invalidate_translation_caches; |
68 |
cpu->invalidate_code_translation = i960_invalidate_code_translation; |
69 |
cpu->is_32bit = 1; |
70 |
|
71 |
cpu->byte_order = EMUL_BIG_ENDIAN; |
72 |
|
73 |
/* Only show name and caches etc for CPU nr 0 (in SMP machines): */ |
74 |
if (cpu_id == 0) { |
75 |
debug("%s", cpu->name); |
76 |
} |
77 |
|
78 |
return 1; |
79 |
} |
80 |
|
81 |
|
82 |
/* |
83 |
* i960_cpu_list_available_types(): |
84 |
* |
85 |
* Print a list of available I960 CPU types. |
86 |
*/ |
87 |
void i960_cpu_list_available_types(void) |
88 |
{ |
89 |
debug("i960\n"); |
90 |
/* TODO */ |
91 |
} |
92 |
|
93 |
|
94 |
/* |
95 |
* i960_cpu_dumpinfo(): |
96 |
*/ |
97 |
void i960_cpu_dumpinfo(struct cpu *cpu) |
98 |
{ |
99 |
/* TODO */ |
100 |
debug("\n"); |
101 |
} |
102 |
|
103 |
|
104 |
/* |
105 |
* i960_cpu_register_dump(): |
106 |
* |
107 |
* Dump cpu registers in a relatively readable format. |
108 |
* |
109 |
* gprs: set to non-zero to dump GPRs and some special-purpose registers. |
110 |
* coprocs: set bit 0..3 to dump registers in coproc 0..3. |
111 |
*/ |
112 |
void i960_cpu_register_dump(struct cpu *cpu, int gprs, int coprocs) |
113 |
{ |
114 |
char *symbol; |
115 |
uint64_t offset; |
116 |
int x = cpu->cpu_id; |
117 |
|
118 |
if (gprs) { |
119 |
/* Special registers (pc, ...) first: */ |
120 |
symbol = get_symbol_name(&cpu->machine->symbol_context, |
121 |
cpu->pc, &offset); |
122 |
|
123 |
debug("cpu%i: pc = 0x%08"PRIx32, x, (uint32_t)cpu->pc); |
124 |
debug(" <%s>\n", symbol != NULL? symbol : " no symbol "); |
125 |
} |
126 |
} |
127 |
|
128 |
|
129 |
/* |
130 |
* i960_cpu_register_match(): |
131 |
*/ |
132 |
void i960_cpu_register_match(struct machine *m, char *name, |
133 |
int writeflag, uint64_t *valuep, int *match_register) |
134 |
{ |
135 |
int cpunr = 0; |
136 |
|
137 |
/* CPU number: */ |
138 |
|
139 |
/* TODO */ |
140 |
|
141 |
/* Register name: */ |
142 |
if (strcasecmp(name, "pc") == 0) { |
143 |
if (writeflag) { |
144 |
m->cpus[cpunr]->pc = *valuep; |
145 |
} else |
146 |
*valuep = m->cpus[cpunr]->pc; |
147 |
*match_register = 1; |
148 |
} |
149 |
} |
150 |
|
151 |
|
152 |
/* |
153 |
* i960_cpu_tlbdump(): |
154 |
* |
155 |
* Called from the debugger to dump the TLB in a readable format. |
156 |
* x is the cpu number to dump, or -1 to dump all CPUs. |
157 |
* |
158 |
* If rawflag is nonzero, then the TLB contents isn't formated nicely, |
159 |
* just dumped. |
160 |
*/ |
161 |
void i960_cpu_tlbdump(struct machine *m, int x, int rawflag) |
162 |
{ |
163 |
} |
164 |
|
165 |
|
166 |
/* |
167 |
* i960_cpu_gdb_stub(): |
168 |
* |
169 |
* Execute a "remote GDB" command. Returns a newly allocated response string |
170 |
* on success, NULL on failure. |
171 |
*/ |
172 |
char *i960_cpu_gdb_stub(struct cpu *cpu, char *cmd) |
173 |
{ |
174 |
fatal("i960_cpu_gdb_stub(): TODO\n"); |
175 |
return NULL; |
176 |
} |
177 |
|
178 |
|
179 |
/* |
180 |
* i960_cpu_interrupt(): |
181 |
*/ |
182 |
int i960_cpu_interrupt(struct cpu *cpu, uint64_t irq_nr) |
183 |
{ |
184 |
fatal("i960_cpu_interrupt(): TODO\n"); |
185 |
return 0; |
186 |
} |
187 |
|
188 |
|
189 |
/* |
190 |
* i960_cpu_interrupt_ack(): |
191 |
*/ |
192 |
int i960_cpu_interrupt_ack(struct cpu *cpu, uint64_t irq_nr) |
193 |
{ |
194 |
/* fatal("i960_cpu_interrupt_ack(): TODO\n"); */ |
195 |
return 0; |
196 |
} |
197 |
|
198 |
|
199 |
/* Helper functions: */ |
200 |
static void print_four(unsigned char *instr, int *len) |
201 |
{ debug(" %02x%02x%02x%02x", instr[*len], instr[*len+1], |
202 |
instr[*len+2], instr[*len+3]); (*len) += 4; } |
203 |
static void print_spaces(int len) { int i; debug(" "); for (i=0; i<16-len/2*5; |
204 |
i++) debug(" "); } |
205 |
|
206 |
|
207 |
/* |
208 |
* i960_cpu_disassemble_instr(): |
209 |
* |
210 |
* Convert an instruction word into human readable format, for instruction |
211 |
* tracing. |
212 |
* |
213 |
* If running is 1, cpu->pc should be the address of the instruction. |
214 |
* |
215 |
* If running is 0, things that depend on the runtime environment (eg. |
216 |
* register contents) will not be shown, and addr will be used instead of |
217 |
* cpu->pc for relative addresses. |
218 |
*/ |
219 |
int i960_cpu_disassemble_instr(struct cpu *cpu, unsigned char *ib, |
220 |
int running, uint64_t dumpaddr) |
221 |
{ |
222 |
uint64_t offset; |
223 |
int len = 0; |
224 |
char *symbol; |
225 |
|
226 |
if (running) |
227 |
dumpaddr = cpu->pc; |
228 |
|
229 |
symbol = get_symbol_name(&cpu->machine->symbol_context, |
230 |
dumpaddr, &offset); |
231 |
if (symbol != NULL && offset==0) |
232 |
debug("<%s>\n", symbol); |
233 |
|
234 |
if (cpu->machine->ncpus > 1 && running) |
235 |
debug("cpu%i: ", cpu->cpu_id); |
236 |
|
237 |
debug("0x%08x: ", (int)dumpaddr); |
238 |
|
239 |
print_four(ib, &len); |
240 |
|
241 |
/* TODO */ |
242 |
print_spaces(len); |
243 |
debug("UNIMPLEMENTED 0x%02x%02x\n", ib[0], ib[1]); |
244 |
|
245 |
return len; |
246 |
} |
247 |
|
248 |
|
249 |
#include "tmp_i960_tail.c" |
250 |
|