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c906108c SS |
1 | #include <stdio.h> |
2 | #include <ctype.h> | |
3 | #include "ansidecl.h" | |
4 | #include "callback.h" | |
5 | #include "opcode/mn10300.h" | |
6 | #include <limits.h> | |
7 | #include "remote-sim.h" | |
8 | #include "bfd.h" | |
9 | ||
10 | #ifndef INLINE | |
11 | #ifdef __GNUC__ | |
12 | #define INLINE inline | |
13 | #else | |
14 | #define INLINE | |
15 | #endif | |
16 | #endif | |
17 | ||
18 | extern host_callback *mn10300_callback; | |
19 | extern SIM_DESC simulator; | |
20 | ||
21 | #define DEBUG_TRACE 0x00000001 | |
22 | #define DEBUG_VALUES 0x00000002 | |
23 | ||
24 | extern int mn10300_debug; | |
25 | ||
26 | #if UCHAR_MAX == 255 | |
27 | typedef unsigned char uint8; | |
28 | typedef signed char int8; | |
29 | #else | |
30 | #error "Char is not an 8-bit type" | |
31 | #endif | |
32 | ||
33 | #if SHRT_MAX == 32767 | |
34 | typedef unsigned short uint16; | |
35 | typedef signed short int16; | |
36 | #else | |
37 | #error "Short is not a 16-bit type" | |
38 | #endif | |
39 | ||
40 | #if INT_MAX == 2147483647 | |
41 | ||
42 | typedef unsigned int uint32; | |
43 | typedef signed int int32; | |
44 | ||
45 | #else | |
46 | # if LONG_MAX == 2147483647 | |
47 | ||
48 | typedef unsigned long uint32; | |
49 | typedef signed long int32; | |
50 | ||
51 | # else | |
52 | # error "Neither int nor long is a 32-bit type" | |
53 | # endif | |
54 | #endif | |
55 | ||
56 | typedef uint32 reg_t; | |
57 | ||
58 | struct simops | |
59 | { | |
60 | long opcode; | |
61 | long mask; | |
62 | void (*func)(); | |
63 | int length; | |
64 | int format; | |
65 | int numops; | |
66 | int operands[16]; | |
67 | }; | |
68 | ||
69 | /* The current state of the processor; registers, memory, etc. */ | |
70 | ||
71 | struct _state | |
72 | { | |
73 | reg_t regs[32]; /* registers, d0-d3, a0-a3, sp, pc, mdr, psw, | |
74 | lir, lar, mdrq, plus some room for processor | |
75 | specific regs. */ | |
76 | uint8 *mem; /* main memory */ | |
77 | int exception; | |
78 | int exited; | |
79 | ||
80 | /* All internal state modified by signal_exception() that may need to be | |
81 | rolled back for passing moment-of-exception image back to gdb. */ | |
82 | reg_t exc_trigger_regs[32]; | |
83 | reg_t exc_suspend_regs[32]; | |
84 | int exc_suspended; | |
85 | ||
86 | #define SIM_CPU_EXCEPTION_TRIGGER(SD,CPU,CIA) mn10300_cpu_exception_trigger(SD,CPU,CIA) | |
87 | #define SIM_CPU_EXCEPTION_SUSPEND(SD,CPU,EXC) mn10300_cpu_exception_suspend(SD,CPU,EXC) | |
88 | #define SIM_CPU_EXCEPTION_RESUME(SD,CPU,EXC) mn10300_cpu_exception_resume(SD,CPU,EXC) | |
89 | }; | |
90 | ||
91 | extern struct _state State; | |
92 | extern uint32 OP[4]; | |
93 | extern struct simops Simops[]; | |
94 | ||
95 | #define PC (State.regs[REG_PC]) | |
96 | #define SP (State.regs[REG_SP]) | |
97 | ||
98 | #define PSW (State.regs[11]) | |
99 | #define PSW_Z 0x1 | |
100 | #define PSW_N 0x2 | |
101 | #define PSW_C 0x4 | |
102 | #define PSW_V 0x8 | |
103 | #define PSW_IE LSBIT (11) | |
104 | #define PSW_LM LSMASK (10, 8) | |
105 | ||
106 | #define EXTRACT_PSW_LM LSEXTRACTED16 (PSW, 10, 8) | |
107 | #define INSERT_PSW_LM(l) LSINSERTED16 ((l), 10, 8) | |
108 | ||
109 | #define REG_D0 0 | |
110 | #define REG_A0 4 | |
111 | #define REG_SP 8 | |
112 | #define REG_PC 9 | |
113 | #define REG_MDR 10 | |
114 | #define REG_PSW 11 | |
115 | #define REG_LIR 12 | |
116 | #define REG_LAR 13 | |
117 | #define REG_MDRQ 14 | |
c2d11a7d JM |
118 | #define REG_E0 15 |
119 | #define REG_SSP 23 | |
120 | #define REG_MSP 24 | |
121 | #define REG_USP 25 | |
122 | #define REG_MCRH 26 | |
123 | #define REG_MCRL 27 | |
124 | #define REG_MCVF 28 | |
c906108c SS |
125 | |
126 | #if WITH_COMMON | |
127 | /* These definitions conflict with similar macros in common. */ | |
128 | #else | |
129 | #define SEXT3(x) ((((x)&0x7)^(~0x3))+0x4) | |
130 | ||
131 | /* sign-extend a 4-bit number */ | |
132 | #define SEXT4(x) ((((x)&0xf)^(~0x7))+0x8) | |
133 | ||
134 | /* sign-extend a 5-bit number */ | |
135 | #define SEXT5(x) ((((x)&0x1f)^(~0xf))+0x10) | |
136 | ||
137 | /* sign-extend an 8-bit number */ | |
138 | #define SEXT8(x) ((((x)&0xff)^(~0x7f))+0x80) | |
139 | ||
140 | /* sign-extend a 9-bit number */ | |
141 | #define SEXT9(x) ((((x)&0x1ff)^(~0xff))+0x100) | |
142 | ||
143 | /* sign-extend a 16-bit number */ | |
144 | #define SEXT16(x) ((((x)&0xffff)^(~0x7fff))+0x8000) | |
145 | ||
146 | /* sign-extend a 22-bit number */ | |
147 | #define SEXT22(x) ((((x)&0x3fffff)^(~0x1fffff))+0x200000) | |
148 | ||
149 | #define MAX32 0x7fffffffLL | |
150 | #define MIN32 0xff80000000LL | |
151 | #define MASK32 0xffffffffLL | |
152 | #define MASK40 0xffffffffffLL | |
153 | #endif /* not WITH_COMMON */ | |
154 | ||
155 | #ifdef _WIN32 | |
156 | #define SIGTRAP 5 | |
157 | #define SIGQUIT 3 | |
158 | #endif | |
159 | ||
160 | #if WITH_COMMON | |
161 | ||
162 | #define FETCH32(a,b,c,d) \ | |
163 | ((a)+((b)<<8)+((c)<<16)+((d)<<24)) | |
164 | ||
165 | #define FETCH24(a,b,c) \ | |
166 | ((a)+((b)<<8)+((c)<<16)) | |
167 | ||
168 | #define FETCH16(a,b) ((a)+((b)<<8)) | |
169 | ||
170 | #define load_byte(ADDR) \ | |
171 | sim_core_read_unaligned_1 (STATE_CPU (simulator, 0), PC, read_map, (ADDR)) | |
172 | ||
173 | #define load_half(ADDR) \ | |
174 | sim_core_read_unaligned_2 (STATE_CPU (simulator, 0), PC, read_map, (ADDR)) | |
175 | ||
176 | #define load_word(ADDR) \ | |
177 | sim_core_read_unaligned_4 (STATE_CPU (simulator, 0), PC, read_map, (ADDR)) | |
178 | ||
179 | #define store_byte(ADDR, DATA) \ | |
180 | sim_core_write_unaligned_1 (STATE_CPU (simulator, 0), \ | |
181 | PC, write_map, (ADDR), (DATA)) | |
182 | ||
183 | ||
184 | #define store_half(ADDR, DATA) \ | |
185 | sim_core_write_unaligned_2 (STATE_CPU (simulator, 0), \ | |
186 | PC, write_map, (ADDR), (DATA)) | |
187 | ||
188 | ||
189 | #define store_word(ADDR, DATA) \ | |
190 | sim_core_write_unaligned_4 (STATE_CPU (simulator, 0), \ | |
191 | PC, write_map, (ADDR), (DATA)) | |
192 | #endif /* WITH_COMMON */ | |
193 | ||
194 | #if WITH_COMMON | |
195 | #else | |
196 | #define load_mem_big(addr,len) \ | |
197 | (len == 1 ? *((addr) + State.mem) : \ | |
198 | len == 2 ? ((*((addr) + State.mem) << 8) \ | |
199 | | *(((addr) + 1) + State.mem)) : \ | |
200 | len == 3 ? ((*((addr) + State.mem) << 16) \ | |
201 | | (*(((addr) + 1) + State.mem) << 8) \ | |
202 | | *(((addr) + 2) + State.mem)) : \ | |
203 | ((*((addr) + State.mem) << 24) \ | |
204 | | (*(((addr) + 1) + State.mem) << 16) \ | |
205 | | (*(((addr) + 2) + State.mem) << 8) \ | |
206 | | *(((addr) + 3) + State.mem))) | |
207 | ||
208 | static INLINE uint32 | |
209 | load_byte (addr) | |
210 | SIM_ADDR addr; | |
211 | { | |
212 | uint8 *p = (addr & 0xffffff) + State.mem; | |
213 | ||
214 | #ifdef CHECK_ADDR | |
215 | if ((addr & 0xffffff) > max_mem) | |
216 | abort (); | |
217 | #endif | |
218 | ||
219 | return p[0]; | |
220 | } | |
221 | ||
222 | static INLINE uint32 | |
223 | load_half (addr) | |
224 | SIM_ADDR addr; | |
225 | { | |
226 | uint8 *p = (addr & 0xffffff) + State.mem; | |
227 | ||
228 | #ifdef CHECK_ADDR | |
229 | if ((addr & 0xffffff) > max_mem) | |
230 | abort (); | |
231 | #endif | |
232 | ||
233 | return p[1] << 8 | p[0]; | |
234 | } | |
235 | ||
236 | static INLINE uint32 | |
237 | load_3_byte (addr) | |
238 | SIM_ADDR addr; | |
239 | { | |
240 | uint8 *p = (addr & 0xffffff) + State.mem; | |
241 | ||
242 | #ifdef CHECK_ADDR | |
243 | if ((addr & 0xffffff) > max_mem) | |
244 | abort (); | |
245 | #endif | |
246 | ||
247 | return p[2] << 16 | p[1] << 8 | p[0]; | |
248 | } | |
249 | ||
250 | static INLINE uint32 | |
251 | load_word (addr) | |
252 | SIM_ADDR addr; | |
253 | { | |
254 | uint8 *p = (addr & 0xffffff) + State.mem; | |
255 | ||
256 | #ifdef CHECK_ADDR | |
257 | if ((addr & 0xffffff) > max_mem) | |
258 | abort (); | |
259 | #endif | |
260 | ||
261 | return p[3] << 24 | p[2] << 16 | p[1] << 8 | p[0]; | |
262 | } | |
263 | ||
264 | static INLINE uint32 | |
265 | load_mem (addr, len) | |
266 | SIM_ADDR addr; | |
267 | int len; | |
268 | { | |
269 | uint8 *p = (addr & 0xffffff) + State.mem; | |
270 | ||
271 | #ifdef CHECK_ADDR | |
272 | if ((addr & 0xffffff) > max_mem) | |
273 | abort (); | |
274 | #endif | |
275 | ||
276 | switch (len) | |
277 | { | |
278 | case 1: | |
279 | return p[0]; | |
280 | case 2: | |
281 | return p[1] << 8 | p[0]; | |
282 | case 3: | |
283 | return p[2] << 16 | p[1] << 8 | p[0]; | |
284 | case 4: | |
285 | return p[3] << 24 | p[2] << 16 | p[1] << 8 | p[0]; | |
286 | default: | |
287 | abort (); | |
288 | } | |
289 | } | |
290 | ||
291 | static INLINE void | |
292 | store_byte (addr, data) | |
293 | SIM_ADDR addr; | |
294 | uint32 data; | |
295 | { | |
296 | uint8 *p = (addr & 0xffffff) + State.mem; | |
297 | ||
298 | #ifdef CHECK_ADDR | |
299 | if ((addr & 0xffffff) > max_mem) | |
300 | abort (); | |
301 | #endif | |
302 | ||
303 | p[0] = data; | |
304 | } | |
305 | ||
306 | static INLINE void | |
307 | store_half (addr, data) | |
308 | SIM_ADDR addr; | |
309 | uint32 data; | |
310 | { | |
311 | uint8 *p = (addr & 0xffffff) + State.mem; | |
312 | ||
313 | #ifdef CHECK_ADDR | |
314 | if ((addr & 0xffffff) > max_mem) | |
315 | abort (); | |
316 | #endif | |
317 | ||
318 | p[0] = data; | |
319 | p[1] = data >> 8; | |
320 | } | |
321 | ||
322 | static INLINE void | |
323 | store_3_byte (addr, data) | |
324 | SIM_ADDR addr; | |
325 | uint32 data; | |
326 | { | |
327 | uint8 *p = (addr & 0xffffff) + State.mem; | |
328 | ||
329 | #ifdef CHECK_ADDR | |
330 | if ((addr & 0xffffff) > max_mem) | |
331 | abort (); | |
332 | #endif | |
333 | ||
334 | p[0] = data; | |
335 | p[1] = data >> 8; | |
336 | p[2] = data >> 16; | |
337 | } | |
338 | ||
339 | static INLINE void | |
340 | store_word (addr, data) | |
341 | SIM_ADDR addr; | |
342 | uint32 data; | |
343 | { | |
344 | uint8 *p = (addr & 0xffffff) + State.mem; | |
345 | ||
346 | #ifdef CHECK_ADDR | |
347 | if ((addr & 0xffffff) > max_mem) | |
348 | abort (); | |
349 | #endif | |
350 | ||
351 | p[0] = data; | |
352 | p[1] = data >> 8; | |
353 | p[2] = data >> 16; | |
354 | p[3] = data >> 24; | |
355 | } | |
356 | #endif /* not WITH_COMMON */ | |
357 | ||
358 | /* Function declarations. */ | |
359 | ||
360 | uint32 get_word PARAMS ((uint8 *)); | |
361 | uint16 get_half PARAMS ((uint8 *)); | |
362 | uint8 get_byte PARAMS ((uint8 *)); | |
363 | void put_word PARAMS ((uint8 *, uint32)); | |
364 | void put_half PARAMS ((uint8 *, uint16)); | |
365 | void put_byte PARAMS ((uint8 *, uint8)); | |
366 | ||
367 | extern uint8 *map PARAMS ((SIM_ADDR addr)); | |
368 | ||
369 | INLINE_SIM_MAIN (void) genericAdd PARAMS ((unsigned long source, unsigned long destReg)); | |
370 | INLINE_SIM_MAIN (void) genericSub PARAMS ((unsigned long source, unsigned long destReg)); | |
371 | INLINE_SIM_MAIN (void) genericCmp PARAMS ((unsigned long leftOpnd, unsigned long rightOpnd)); | |
372 | INLINE_SIM_MAIN (void) genericOr PARAMS ((unsigned long source, unsigned long destReg)); | |
373 | INLINE_SIM_MAIN (void) genericXor PARAMS ((unsigned long source, unsigned long destReg)); | |
374 | INLINE_SIM_MAIN (void) genericBtst PARAMS ((unsigned long leftOpnd, unsigned long rightOpnd)); | |
375 | INLINE_SIM_MAIN (int) syscall_read_mem PARAMS ((host_callback *cb, | |
376 | struct cb_syscall *sc, | |
377 | unsigned long taddr, | |
378 | char *buf, | |
379 | int bytes)); | |
380 | INLINE_SIM_MAIN (int) syscall_write_mem PARAMS ((host_callback *cb, | |
381 | struct cb_syscall *sc, | |
382 | unsigned long taddr, | |
383 | const char *buf, | |
384 | int bytes)); | |
385 | INLINE_SIM_MAIN (void) do_syscall PARAMS ((void)); | |
386 | void program_interrupt (SIM_DESC sd, sim_cpu *cpu, sim_cia cia, SIM_SIGNAL sig); | |
387 | ||
388 | void mn10300_cpu_exception_trigger(SIM_DESC sd, sim_cpu* cpu, address_word pc); | |
389 | void mn10300_cpu_exception_suspend(SIM_DESC sd, sim_cpu* cpu, int exception); | |
390 | void mn10300_cpu_exception_resume(SIM_DESC sd, sim_cpu* cpu, int exception); |