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c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
3 | Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au> | |
4 | Copyright (C) 1997, Free Software Foundation | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | ||
20 | */ | |
21 | ||
22 | ||
23 | #include <stdarg.h> | |
24 | #include <ctype.h> | |
25 | ||
26 | #include "sim-main.h" | |
27 | #include "sim-options.h" | |
28 | ||
29 | #include "bfd.h" | |
30 | #include "sim-utils.h" | |
31 | ||
32 | #ifdef HAVE_STDLIB_H | |
33 | #include <stdlib.h> | |
34 | #endif | |
35 | ||
36 | static unsigned long extmem_size = 1024*1024*8; /* 8 meg is the maximum listed in the arch. manual */ | |
37 | ||
38 | static const char * get_insn_name (sim_cpu *, int); | |
39 | ||
40 | #define SIM_ADDR unsigned | |
41 | ||
42 | ||
43 | #define OPTION_TRACE_CALL 200 | |
44 | #define OPTION_TRACE_TRAPDUMP 201 | |
45 | #define OPTION_EXTMEM_SIZE 202 | |
46 | ||
47 | static SIM_RC | |
48 | d30v_option_handler (SIM_DESC sd, | |
49 | sim_cpu *cpu, | |
50 | int opt, | |
51 | char *arg, | |
52 | int command_p) | |
53 | { | |
54 | char *suffix; | |
55 | ||
56 | switch (opt) | |
57 | { | |
58 | default: | |
59 | break; | |
60 | ||
61 | case OPTION_TRACE_CALL: | |
62 | if (arg == NULL || strcmp (arg, "yes") == 0 || strcmp (arg, "on") == 0) | |
63 | TRACE_CALL_P = 1; | |
64 | else if (strcmp (arg, "no") == 0 || strcmp (arg, "off") == 0) | |
65 | TRACE_CALL_P = 0; | |
66 | else | |
67 | { | |
68 | sim_io_eprintf (sd, "Unreconized --trace-call option `%s'\n", arg); | |
69 | return SIM_RC_FAIL; | |
70 | } | |
71 | return SIM_RC_OK; | |
72 | ||
73 | case OPTION_TRACE_TRAPDUMP: | |
74 | if (arg == NULL || strcmp (arg, "yes") == 0 || strcmp (arg, "on") == 0) | |
75 | TRACE_TRAP_P = 1; | |
76 | else if (strcmp (arg, "no") == 0 || strcmp (arg, "off") == 0) | |
77 | TRACE_TRAP_P = 0; | |
78 | else | |
79 | { | |
80 | sim_io_eprintf (sd, "Unreconized --trace-call option `%s'\n", arg); | |
81 | return SIM_RC_FAIL; | |
82 | } | |
83 | return SIM_RC_OK; | |
84 | ||
85 | case OPTION_EXTMEM_SIZE: | |
86 | if (arg == NULL || !isdigit (*arg)) | |
87 | { | |
88 | sim_io_eprintf (sd, "Invalid memory size `%s'", arg); | |
89 | return SIM_RC_FAIL; | |
90 | } | |
91 | ||
92 | suffix = arg; | |
93 | extmem_size = strtol (arg, &suffix, 0); | |
94 | if (*suffix == 'm' || *suffix == 'M') | |
95 | extmem_size <<= 20; | |
96 | else if (*suffix == 'k' || *suffix == 'K') | |
97 | extmem_size <<= 10; | |
98 | sim_do_commandf (sd, "memory delete 0x80000000"); | |
99 | sim_do_commandf (sd, "memory region 0x80000000,0x%lx", extmem_size); | |
100 | ||
101 | return SIM_RC_OK; | |
102 | } | |
103 | ||
104 | sim_io_eprintf (sd, "Unknown option (%d)\n", opt); | |
105 | return SIM_RC_FAIL; | |
106 | } | |
107 | ||
108 | static const OPTION d30v_options[] = | |
109 | { | |
110 | { {"trace-call", optional_argument, NULL, OPTION_TRACE_CALL}, | |
111 | '\0', "on|off", "Enable tracing of calls and returns, checking saved registers", | |
112 | d30v_option_handler }, | |
113 | { {"trace-trapdump", optional_argument, NULL, OPTION_TRACE_TRAPDUMP}, | |
114 | '\0', "on|off", | |
115 | #if TRAPDUMP | |
116 | "Traps 0..30 dump out all of the registers (defaults on)", | |
117 | #else | |
118 | "Traps 0..30 dump out all of the registers", | |
119 | #endif | |
120 | d30v_option_handler }, | |
121 | { {"extmem-size", required_argument, NULL, OPTION_EXTMEM_SIZE}, | |
122 | '\0', "size", "Change size of external memory, default 8 meg", | |
123 | d30v_option_handler }, | |
124 | { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL } | |
125 | }; | |
126 | ||
127 | /* Return name of an insn, used by insn profiling. */ | |
128 | ||
129 | static const char * | |
130 | get_insn_name (sim_cpu *cpu, int i) | |
131 | { | |
132 | return itable[i].name; | |
133 | } | |
134 | ||
135 | /* Structures used by the simulator, for gdb just have static structures */ | |
136 | ||
137 | SIM_DESC | |
138 | sim_open (SIM_OPEN_KIND kind, | |
139 | host_callback *callback, | |
140 | struct _bfd *abfd, | |
141 | char **argv) | |
142 | { | |
143 | SIM_DESC sd = sim_state_alloc (kind, callback); | |
144 | ||
145 | /* FIXME: watchpoints code shouldn't need this */ | |
146 | STATE_WATCHPOINTS (sd)->pc = &(PC); | |
147 | STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC); | |
148 | STATE_WATCHPOINTS (sd)->interrupt_handler = d30v_interrupt_event; | |
149 | ||
150 | /* Initialize the mechanism for doing insn profiling. */ | |
151 | CPU_INSN_NAME (STATE_CPU (sd, 0)) = get_insn_name; | |
152 | CPU_MAX_INSNS (STATE_CPU (sd, 0)) = nr_itable_entries; | |
153 | ||
154 | #ifdef TRAPDUMP | |
155 | TRACE_TRAP_P = TRAPDUMP; | |
156 | #endif | |
157 | ||
158 | if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) | |
159 | return 0; | |
160 | sim_add_option_table (sd, NULL, d30v_options); | |
161 | ||
162 | /* Memory and EEPROM */ | |
163 | /* internal instruction RAM - fixed */ | |
164 | sim_do_commandf (sd, "memory region 0,0x10000"); | |
165 | /* internal data RAM - fixed */ | |
166 | sim_do_commandf (sd, "memory region 0x20000000,0x8000"); | |
167 | /* control register dummy area */ | |
168 | sim_do_commandf (sd, "memory region 0x40000000,0x10000"); | |
169 | /* external RAM */ | |
170 | sim_do_commandf (sd, "memory region 0x80000000,0x%lx", extmem_size); | |
171 | /* EIT RAM */ | |
172 | sim_do_commandf (sd, "memory region 0xfffff000,0x1000"); | |
173 | ||
174 | /* getopt will print the error message so we just have to exit if this fails. | |
175 | FIXME: Hmmm... in the case of gdb we need getopt to call | |
176 | print_filtered. */ | |
177 | if (sim_parse_args (sd, argv) != SIM_RC_OK) | |
178 | { | |
179 | /* Uninstall the modules to avoid memory leaks, | |
180 | file descriptor leaks, etc. */ | |
181 | sim_module_uninstall (sd); | |
182 | return 0; | |
183 | } | |
184 | ||
185 | /* check for/establish the a reference program image */ | |
186 | if (sim_analyze_program (sd, | |
187 | (STATE_PROG_ARGV (sd) != NULL | |
188 | ? *STATE_PROG_ARGV (sd) | |
189 | : NULL), | |
190 | abfd) != SIM_RC_OK) | |
191 | { | |
192 | sim_module_uninstall (sd); | |
193 | return 0; | |
194 | } | |
195 | ||
196 | /* establish any remaining configuration options */ | |
197 | if (sim_config (sd) != SIM_RC_OK) | |
198 | { | |
199 | sim_module_uninstall (sd); | |
200 | return 0; | |
201 | } | |
202 | ||
203 | if (sim_post_argv_init (sd) != SIM_RC_OK) | |
204 | { | |
205 | /* Uninstall the modules to avoid memory leaks, | |
206 | file descriptor leaks, etc. */ | |
207 | sim_module_uninstall (sd); | |
208 | return 0; | |
209 | } | |
210 | ||
211 | return sd; | |
212 | } | |
213 | ||
214 | ||
215 | void | |
216 | sim_close (SIM_DESC sd, int quitting) | |
217 | { | |
218 | /* Uninstall the modules to avoid memory leaks, | |
219 | file descriptor leaks, etc. */ | |
220 | sim_module_uninstall (sd); | |
221 | } | |
222 | ||
223 | ||
224 | SIM_RC | |
225 | sim_create_inferior (SIM_DESC sd, | |
226 | struct _bfd *abfd, | |
227 | char **argv, | |
228 | char **envp) | |
229 | { | |
230 | /* clear all registers */ | |
231 | memset (&STATE_CPU (sd, 0)->regs, 0, sizeof (STATE_CPU (sd, 0)->regs)); | |
232 | EIT_VB = EIT_VB_DEFAULT; | |
233 | STATE_CPU (sd, 0)->unit = any_unit; | |
234 | sim_module_init (sd); | |
235 | if (abfd != NULL) | |
236 | PC = bfd_get_start_address (abfd); | |
237 | else | |
238 | PC = 0xfffff000; /* reset value */ | |
239 | return SIM_RC_OK; | |
240 | } | |
241 | ||
242 | void | |
243 | sim_do_command (SIM_DESC sd, char *cmd) | |
244 | { | |
245 | if (sim_args_command (sd, cmd) != SIM_RC_OK) | |
246 | sim_io_printf (sd, "Unknown command `%s'\n", cmd); | |
247 | } | |
248 | ||
249 | /* The following register definitions were ripped off from | |
250 | gdb/config/tm-d30v.h. If any of those defs changes, this table needs to | |
251 | be updated. */ | |
252 | ||
253 | #define NUM_REGS 86 | |
254 | ||
255 | #define R0_REGNUM 0 | |
256 | #define FP_REGNUM 11 | |
257 | #define LR_REGNUM 62 | |
258 | #define SP_REGNUM 63 | |
259 | #define SPI_REGNUM 64 /* Interrupt stack pointer */ | |
260 | #define SPU_REGNUM 65 /* User stack pointer */ | |
261 | #define CREGS_START 66 | |
262 | ||
263 | #define PSW_REGNUM (CREGS_START + 0) /* psw, bpsw, or dpsw??? */ | |
264 | #define PSW_SM 0x80000000 /* Stack mode: 0 == interrupt (SPI), | |
265 | 1 == user (SPU) */ | |
266 | #define BPSW_REGNUM (CREGS_START + 1) /* Backup PSW (on interrupt) */ | |
267 | #define PC_REGNUM (CREGS_START + 2) /* pc, bpc, or dpc??? */ | |
268 | #define BPC_REGNUM (CREGS_START + 3) /* Backup PC (on interrupt) */ | |
269 | #define DPSW_REGNUM (CREGS_START + 4) /* Backup PSW (on debug trap) */ | |
270 | #define DPC_REGNUM (CREGS_START + 5) /* Backup PC (on debug trap) */ | |
271 | #define RPT_C_REGNUM (CREGS_START + 7) /* Loop count */ | |
272 | #define RPT_S_REGNUM (CREGS_START + 8) /* Loop start address*/ | |
273 | #define RPT_E_REGNUM (CREGS_START + 9) /* Loop end address */ | |
274 | #define MOD_S_REGNUM (CREGS_START + 10) | |
275 | #define MOD_E_REGNUM (CREGS_START + 11) | |
276 | #define IBA_REGNUM (CREGS_START + 14) /* Instruction break address */ | |
277 | #define EIT_VB_REGNUM (CREGS_START + 15) /* Vector base address */ | |
278 | #define INT_S_REGNUM (CREGS_START + 16) /* Interrupt status */ | |
279 | #define INT_M_REGNUM (CREGS_START + 17) /* Interrupt mask */ | |
280 | #define A0_REGNUM 84 | |
281 | #define A1_REGNUM 85 | |
282 | ||
283 | int | |
284 | sim_fetch_register (sd, regno, buf, length) | |
285 | SIM_DESC sd; | |
286 | int regno; | |
287 | unsigned char *buf; | |
288 | int length; | |
289 | { | |
290 | if (regno < A0_REGNUM) | |
291 | { | |
292 | unsigned32 reg; | |
293 | ||
294 | if (regno <= R0_REGNUM + 63) | |
295 | reg = sd->cpu[0].regs.general_purpose[regno]; | |
296 | else if (regno <= SPU_REGNUM) | |
297 | reg = sd->cpu[0].regs.sp[regno - SPI_REGNUM]; | |
298 | else | |
299 | reg = sd->cpu[0].regs.control[regno - CREGS_START]; | |
300 | ||
301 | buf[0] = reg >> 24; | |
302 | buf[1] = reg >> 16; | |
303 | buf[2] = reg >> 8; | |
304 | buf[3] = reg; | |
305 | } | |
306 | else if (regno < NUM_REGS) | |
307 | { | |
308 | unsigned32 reg; | |
309 | ||
310 | reg = sd->cpu[0].regs.accumulator[regno - A0_REGNUM] >> 32; | |
311 | ||
312 | buf[0] = reg >> 24; | |
313 | buf[1] = reg >> 16; | |
314 | buf[2] = reg >> 8; | |
315 | buf[3] = reg; | |
316 | ||
317 | reg = sd->cpu[0].regs.accumulator[regno - A0_REGNUM]; | |
318 | ||
319 | buf[4] = reg >> 24; | |
320 | buf[5] = reg >> 16; | |
321 | buf[6] = reg >> 8; | |
322 | buf[7] = reg; | |
323 | } | |
324 | else | |
325 | abort (); | |
326 | return -1; | |
327 | } | |
328 | ||
329 | int | |
330 | sim_store_register (sd, regno, buf, length) | |
331 | SIM_DESC sd; | |
332 | int regno; | |
333 | unsigned char *buf; | |
334 | int length; | |
335 | { | |
336 | if (regno < A0_REGNUM) | |
337 | { | |
338 | unsigned32 reg; | |
339 | ||
340 | reg = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]; | |
341 | ||
342 | if (regno <= R0_REGNUM + 63) | |
343 | sd->cpu[0].regs.general_purpose[regno] = reg; | |
344 | else if (regno <= SPU_REGNUM) | |
345 | sd->cpu[0].regs.sp[regno - SPI_REGNUM] = reg; | |
346 | else | |
347 | sd->cpu[0].regs.control[regno - CREGS_START] = reg; | |
348 | } | |
349 | else if (regno < NUM_REGS) | |
350 | { | |
351 | unsigned32 reg; | |
352 | ||
353 | reg = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]; | |
354 | ||
355 | sd->cpu[0].regs.accumulator[regno - A0_REGNUM] = (unsigned64)reg << 32; | |
356 | ||
357 | reg = (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7]; | |
358 | ||
359 | sd->cpu[0].regs.accumulator[regno - A0_REGNUM] |= reg; | |
360 | } | |
361 | else | |
362 | abort (); | |
363 | return -1; | |
364 | } |