edae7bf4df9373e36e127b86ff9ecd41da590628
1 /* mem.c --- memory for M32C simulator.
3 Copyright (C) 2005, 2007 Free Software Foundation, Inc.
4 Contributed by Red Hat, Inc.
6 This file is part of the GNU simulators.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
35 #define L1_LEN (1 << L1_BITS)
36 #define L2_LEN (1 << L2_BITS)
37 #define OFF_LEN (1 << OFF_BITS)
39 static unsigned char **pt
[L1_LEN
];
41 /* [ get=0/put=1 ][ byte size ] */
42 static unsigned int mem_counters
[2][4];
44 #define COUNT(isput,bytes) \
45 if (verbose && enable_counting) mem_counters[isput][bytes]++
52 for (i
= 0; i
< L1_LEN
; i
++)
55 for (j
= 0; j
< L2_LEN
; j
++)
60 memset (pt
, 0, sizeof (pt
));
61 memset (mem_counters
, 0, sizeof (mem_counters
));
64 static unsigned char *
67 int pt1
= (address
>> (L2_BITS
+ OFF_BITS
)) & ((1 << L1_BITS
) - 1);
68 int pt2
= (address
>> OFF_BITS
) & ((1 << L2_BITS
) - 1);
69 int pto
= address
& ((1 << OFF_BITS
) - 1);
73 printf ("NULL pointer dereference\n");
78 pt
[pt1
] = (unsigned char **) calloc (L2_LEN
, sizeof (char **));
79 if (pt
[pt1
][pt2
] == 0)
81 pt
[pt1
][pt2
] = (unsigned char *) malloc (OFF_LEN
);
82 memset (pt
[pt1
][pt2
], 0, OFF_LEN
);
85 return pt
[pt1
][pt2
] + pto
;
89 used (int rstart
, int i
, int j
)
91 int rend
= i
<< (L2_BITS
+ OFF_BITS
);
92 rend
+= j
<< OFF_BITS
;
93 if (rstart
== 0xe0000 && rend
== 0xe1000)
95 printf ("mem: %08x - %08x (%dk bytes)\n", rstart
, rend
- 1,
96 (rend
- rstart
) / 1024);
100 mcs (int isput
, int bytes
)
102 return comma (mem_counters
[isput
][bytes
]);
112 for (i
= 0; i
< L1_LEN
; i
++)
115 for (j
= 0; j
< L2_LEN
; j
++)
121 rstart
= (i
<< (L2_BITS
+ OFF_BITS
)) + (j
<< OFF_BITS
);
138 /* mem foo: 123456789012 123456789012 123456789012 123456789012
140 printf (" byte short pointer long"
142 printf ("mem get: %12s %12s %12s %12s %12s\n", mcs (0, 1), mcs (0, 2),
143 mcs (0, 3), mcs (0, 4), mcs (0, 0));
144 printf ("mem put: %12s %12s %12s %12s\n", mcs (1, 1), mcs (1, 2),
145 mcs (1, 3), mcs (1, 4));
150 s (int address
, char *dir
)
153 printf ("MEM[%0*x] %s", membus_mask
== 0xfffff ? 5 : 6, address
, dir
);
157 #define S(d) if (trace) s(address, d)
168 #define E() if (trace) e()
171 mem_put_byte (int address
, unsigned char value
)
174 address
&= membus_mask
;
175 m
= mem_ptr (address
);
177 printf (" %02x", value
);
183 static int old_led
= -1;
184 static char *led_on
[] =
185 { "\033[31m O ", "\033[32m O ", "\033[34m O " };
186 static char *led_off
[] = { "\033[0m · ", "\033[0m · ", "\033[0m · " };
188 if (old_led
!= value
)
191 for (i
= 0; i
< 3; i
++)
192 if (value
& (1 << i
))
193 fputs (led_off
[i
], stdout
);
195 fputs (led_on
[i
], stdout
);
196 fputs ("\033[0m\r", stdout
);
203 case 0x3aa: /* uart1tx */
205 static int pending_exit
= 0;
210 step_result
= M32C_MAKE_EXITED(value
);
221 m32c_syscall (value
);
229 printf ("SimTrace: %06lx %02x\n", regs
.r_pc
, value
);
233 printf ("SimTrap: %06lx %02x\n", regs
.r_pc
, value
);
239 mem_put_qi (int address
, unsigned char value
)
242 mem_put_byte (address
, value
& 0xff);
248 mem_put_hi (int address
, unsigned short value
)
250 if (address
== 0x402)
252 printf ("SimTrace: %06lx %04x\n", regs
.r_pc
, value
);
256 mem_put_byte (address
, value
& 0xff);
257 mem_put_byte (address
+ 1, value
>> 8);
263 mem_put_psi (int address
, unsigned long value
)
266 mem_put_byte (address
, value
& 0xff);
267 mem_put_byte (address
+ 1, (value
>> 8) & 0xff);
268 mem_put_byte (address
+ 2, value
>> 16);
274 mem_put_si (int address
, unsigned long value
)
277 mem_put_byte (address
, value
& 0xff);
278 mem_put_byte (address
+ 1, (value
>> 8) & 0xff);
279 mem_put_byte (address
+ 2, (value
>> 16) & 0xff);
280 mem_put_byte (address
+ 3, (value
>> 24) & 0xff);
286 mem_put_blk (int address
, void *bufptr
, int nbytes
)
290 mem_counters
[1][1] += nbytes
;
292 mem_put_byte (address
++, *(unsigned char *) bufptr
++);
299 unsigned char *m
= mem_ptr (regs
.r_pc
& membus_mask
);
305 mem_get_byte (int address
)
308 address
&= membus_mask
;
310 m
= mem_ptr (address
);
313 case 0x3ad: /* uart1c1 */
315 return 2; /* transmitter empty */
319 printf (" %02x", *m
);
327 mem_get_qi (int address
)
331 rv
= mem_get_byte (address
);
338 mem_get_hi (int address
)
342 rv
= mem_get_byte (address
);
343 rv
|= mem_get_byte (address
+ 1) * 256;
350 mem_get_psi (int address
)
354 rv
= mem_get_byte (address
);
355 rv
|= mem_get_byte (address
+ 1) * 256;
356 rv
|= mem_get_byte (address
+ 2) * 65536;
363 mem_get_si (int address
)
367 rv
= mem_get_byte (address
);
368 rv
|= mem_get_byte (address
+ 1) << 8;
369 rv
|= mem_get_byte (address
+ 2) << 16;
370 rv
|= mem_get_byte (address
+ 3) << 24;
377 mem_get_blk (int address
, void *bufptr
, int nbytes
)
381 mem_counters
[0][1] += nbytes
;
383 *(char *) bufptr
++ = mem_get_byte (address
++);
388 sign_ext (int v
, int bits
)
392 v
&= (1 << bits
) - 1;
393 if (v
& (1 << (bits
- 1)))
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