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81e09ed8 SC |
1 | /* sim-main.h -- Simulator for Motorola 68HC11 & 68HC12 |
2 | Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc. | |
e0709f50 AC |
3 | Written by Stephane Carrez (stcarrez@worldnet.fr) |
4 | ||
5 | This file is part of GDB, the GNU debugger. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License along | |
18 | with this program; if not, write to the Free Software Foundation, Inc., | |
19 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #ifndef _SIM_MAIN_H | |
22 | #define _SIM_MAIN_H | |
23 | ||
24 | #define WITH_MODULO_MEMORY 1 | |
25 | #define WITH_WATCHPOINTS 1 | |
26 | #define SIM_HANDLES_LMA 1 | |
27 | ||
28 | #include "sim-basics.h" | |
29 | ||
30 | typedef address_word sim_cia; | |
31 | ||
32 | #include "sim-signal.h" | |
33 | #include "sim-base.h" | |
34 | ||
35 | #include "bfd.h" | |
36 | ||
37 | #include "opcode/m68hc11.h" | |
38 | ||
39 | #include "callback.h" | |
40 | #include "remote-sim.h" | |
41 | #include "opcode/m68hc11.h" | |
42 | #include "sim-types.h" | |
43 | ||
44 | typedef unsigned8 uint8; | |
45 | typedef unsigned16 uint16; | |
46 | typedef signed16 int16; | |
47 | typedef unsigned32 uint32; | |
48 | typedef signed32 int32; | |
49 | typedef unsigned64 uint64; | |
50 | typedef signed64 int64; | |
51 | ||
52 | struct _sim_cpu; | |
53 | ||
54 | #include "interrupts.h" | |
55 | #include <setjmp.h> | |
56 | ||
63348d04 SC |
57 | /* Specifies the level of mapping for the IO, EEprom, nvram and external |
58 | RAM. IO registers are mapped over everything and the external RAM | |
59 | is last (ie, it can be hidden by everything above it in the list). */ | |
60 | enum m68hc11_map_level | |
61 | { | |
62 | M6811_IO_LEVEL, | |
63 | M6811_EEPROM_LEVEL, | |
64 | M6811_NVRAM_LEVEL, | |
65 | M6811_RAM_LEVEL | |
66 | }; | |
67 | ||
81e09ed8 SC |
68 | enum cpu_type |
69 | { | |
70 | CPU_M6811, | |
71 | CPU_M6812 | |
72 | }; | |
63348d04 | 73 | |
e0709f50 AC |
74 | #define X_REGNUM 0 |
75 | #define D_REGNUM 1 | |
76 | #define Y_REGNUM 2 | |
77 | #define SP_REGNUM 3 | |
78 | #define PC_REGNUM 4 | |
79 | #define A_REGNUM 5 | |
80 | #define B_REGNUM 6 | |
81 | #define PSW_REGNUM 7 | |
82 | #define Z_REGNUM 8 | |
e0709f50 AC |
83 | |
84 | typedef struct m6811_regs { | |
85 | unsigned short d; | |
86 | unsigned short ix; | |
87 | unsigned short iy; | |
88 | unsigned short sp; | |
89 | unsigned short pc; | |
90 | unsigned char ccr; | |
91 | } m6811_regs; | |
92 | ||
93 | ||
94 | /* Description of 68HC11 IO registers. Such description is only provided | |
95 | for the info command to display the current setting of IO registers | |
96 | from GDB. */ | |
97 | struct io_reg_desc | |
98 | { | |
99 | int mask; | |
100 | const char *short_name; | |
101 | const char *long_name; | |
102 | }; | |
103 | typedef struct io_reg_desc io_reg_desc; | |
104 | ||
105 | extern void print_io_reg_desc (SIM_DESC sd, io_reg_desc *desc, int val, | |
106 | int mode); | |
107 | extern void print_io_byte (SIM_DESC sd, const char *name, | |
108 | io_reg_desc *desc, uint8 val, uint16 addr); | |
109 | ||
110 | ||
81e09ed8 | 111 | /* List of special 68HC11&68HC12 instructions that are not handled by the |
e0709f50 AC |
112 | 'gencode.c' generator. These complex instructions are implemented |
113 | by 'cpu_special'. */ | |
114 | enum M6811_Special | |
115 | { | |
81e09ed8 SC |
116 | /* 68HC11 instructions. */ |
117 | M6811_DAA, | |
118 | M6811_EMUL_SYSCALL, | |
119 | M6811_ILLEGAL, | |
e0709f50 | 120 | M6811_RTI, |
81e09ed8 | 121 | M6811_STOP, |
e0709f50 AC |
122 | M6811_SWI, |
123 | M6811_TEST, | |
81e09ed8 SC |
124 | M6811_WAI, |
125 | ||
126 | /* 68HC12 instructions. */ | |
127 | M6812_BGND, | |
128 | M6812_CALL, | |
129 | M6812_IDIVS, | |
130 | M6812_EDIV, | |
131 | M6812_EDIVS, | |
132 | M6812_EMACS, | |
133 | M6812_EMUL, | |
134 | M6812_EMULS, | |
135 | M6812_ETBL, | |
136 | M6812_MEM, | |
137 | M6812_REV, | |
138 | M6812_REVW, | |
139 | M6812_RTC, | |
140 | M6812_RTI, | |
141 | M6812_WAV | |
e0709f50 AC |
142 | }; |
143 | ||
144 | #define CPU_POP 1 | |
145 | #define CPU_PUSH 2 | |
146 | ||
81e09ed8 SC |
147 | #define M6811_MAX_PORTS (0x03f+1) |
148 | #define M6812_MAX_PORTS (0x3ff+1) | |
149 | #define MAX_PORTS (M6812_MAX_PORTS) | |
e0709f50 AC |
150 | |
151 | /* Tentative to keep track of the stack frame. | |
152 | The frame is updated each time a call or a return are made. | |
153 | We also have to take into account changes of stack pointer | |
154 | (either thread switch or longjmp). */ | |
155 | struct cpu_frame | |
156 | { | |
157 | struct cpu_frame *up; | |
158 | uint16 pc; | |
159 | uint16 sp_low; | |
160 | uint16 sp_high; | |
161 | }; | |
162 | ||
163 | /* Represents a list of frames (or a thread). */ | |
164 | struct cpu_frame_list | |
165 | { | |
166 | struct cpu_frame_list *next; | |
167 | struct cpu_frame_list *prev; | |
168 | struct cpu_frame *frame; | |
169 | }; | |
170 | ||
81e09ed8 SC |
171 | struct _sim_cpu; |
172 | ||
173 | typedef void (* cpu_interp) (struct _sim_cpu*); | |
174 | ||
e0709f50 AC |
175 | struct _sim_cpu { |
176 | /* CPU registers. */ | |
177 | struct m6811_regs cpu_regs; | |
178 | ||
179 | /* CPU interrupts. */ | |
180 | struct interrupts cpu_interrupts; | |
181 | ||
182 | struct cpu_frame_list *cpu_frames; | |
183 | struct cpu_frame_list *cpu_current_frame; | |
184 | int cpu_need_update_frame; | |
185 | ||
81e09ed8 SC |
186 | /* Pointer to the interpretor routine. */ |
187 | cpu_interp cpu_interpretor; | |
188 | ||
189 | /* Pointer to the architecture currently configured in the simulator. */ | |
190 | const struct bfd_arch_info *cpu_configured_arch; | |
191 | ||
e0709f50 AC |
192 | /* CPU absolute cycle time. The cycle time is updated after |
193 | each instruction, by the number of cycles taken by the instruction. | |
194 | It is cleared only when reset occurs. */ | |
195 | signed64 cpu_absolute_cycle; | |
196 | ||
197 | /* Number of cycles to increment after the current instruction. | |
198 | This is also the number of ticks for the generic event scheduler. */ | |
199 | uint8 cpu_current_cycle; | |
200 | int cpu_emul_syscall; | |
201 | int cpu_is_initialized; | |
202 | int cpu_running; | |
203 | int cpu_check_memory; | |
204 | int cpu_stop_on_interrupt; | |
205 | ||
206 | /* When this is set, start execution of program at address specified | |
207 | in the ELF header. This is used for testing some programs that do not | |
208 | have an interrupt table linked with them. Programs created during the | |
209 | GCC validation are like this. A normal 68HC11 does not behave like | |
210 | this (unless there is some OS or downloadable feature). */ | |
211 | int cpu_use_elf_start; | |
212 | ||
213 | /* The starting address specified in ELF header. */ | |
214 | int cpu_elf_start; | |
215 | ||
216 | uint16 cpu_insn_pc; | |
e0709f50 AC |
217 | |
218 | /* CPU frequency. This is the quartz frequency. It is divided by 4 to | |
219 | get the cycle time. This is used for the timer rate and for the baud | |
220 | rate generation. */ | |
221 | unsigned long cpu_frequency; | |
222 | ||
223 | /* The mode in which the CPU is configured (MODA and MODB pins). */ | |
224 | unsigned int cpu_mode; | |
225 | ||
81e09ed8 SC |
226 | /* The cpu being configured. */ |
227 | enum cpu_type cpu_type; | |
228 | ||
e0709f50 AC |
229 | /* Initial value of the CONFIG register. */ |
230 | uint8 cpu_config; | |
231 | uint8 cpu_use_local_config; | |
232 | ||
81e09ed8 | 233 | uint8 ios[MAX_PORTS]; |
e0709f50 AC |
234 | |
235 | /* ... base type ... */ | |
236 | sim_cpu_base base; | |
237 | }; | |
238 | ||
239 | /* Returns the cpu absolute cycle time (A virtual counter incremented | |
240 | at each 68HC11 E clock). */ | |
241 | #define cpu_current_cycle(PROC) ((PROC)->cpu_absolute_cycle) | |
242 | #define cpu_add_cycles(PROC,T) ((PROC)->cpu_current_cycle += (signed64) (T)) | |
243 | #define cpu_is_running(PROC) ((PROC)->cpu_running) | |
244 | ||
245 | /* Get the IO/RAM base addresses depending on the M6811_INIT register. */ | |
246 | #define cpu_get_io_base(PROC) \ | |
247 | (((uint16)(((PROC)->ios[M6811_INIT]) & 0x0F))<<12) | |
248 | #define cpu_get_reg_base(PROC) \ | |
249 | (((uint16)(((PROC)->ios[M6811_INIT]) & 0xF0))<<8) | |
250 | ||
251 | /* Returns the different CPU registers. */ | |
252 | #define cpu_get_ccr(PROC) ((PROC)->cpu_regs.ccr) | |
253 | #define cpu_get_pc(PROC) ((PROC)->cpu_regs.pc) | |
254 | #define cpu_get_d(PROC) ((PROC)->cpu_regs.d) | |
255 | #define cpu_get_x(PROC) ((PROC)->cpu_regs.ix) | |
256 | #define cpu_get_y(PROC) ((PROC)->cpu_regs.iy) | |
257 | #define cpu_get_sp(PROC) ((PROC)->cpu_regs.sp) | |
258 | #define cpu_get_a(PROC) ((PROC->cpu_regs.d >> 8) & 0x0FF) | |
259 | #define cpu_get_b(PROC) ((PROC->cpu_regs.d) & 0x0FF) | |
260 | ||
81e09ed8 SC |
261 | /* 68HC12 specific and Motorola internal registers. */ |
262 | #define cpu_get_tmp3(PROC) (0) | |
263 | #define cpu_get_tmp2(PROC) (0) | |
264 | ||
e0709f50 AC |
265 | #define cpu_set_d(PROC,VAL) (((PROC)->cpu_regs.d) = (VAL)) |
266 | #define cpu_set_x(PROC,VAL) (((PROC)->cpu_regs.ix) = (VAL)) | |
267 | #define cpu_set_y(PROC,VAL) (((PROC)->cpu_regs.iy) = (VAL)) | |
268 | ||
81e09ed8 SC |
269 | /* 68HC12 specific and Motorola internal registers. */ |
270 | #define cpu_set_tmp3(PROC,VAL) (0) | |
271 | #define cpu_set_tmp2(PROC,VAL) (0) | |
272 | ||
e0709f50 AC |
273 | #if 0 |
274 | /* This is a function in m68hc11_sim.c to keep track of the frame. */ | |
275 | #define cpu_set_sp(PROC,VAL) (((PROC)->cpu_regs.sp) = (VAL)) | |
276 | #endif | |
277 | ||
278 | #define cpu_set_pc(PROC,VAL) (((PROC)->cpu_regs.pc) = (VAL)) | |
279 | ||
280 | #define cpu_set_a(PROC,VAL) \ | |
281 | cpu_set_d(PROC,((VAL) << 8) | cpu_get_b(PROC)) | |
282 | #define cpu_set_b(PROC,VAL) \ | |
283 | cpu_set_d(PROC,((cpu_get_a(PROC)) << 8)|(VAL & 0x0FF)) | |
284 | ||
285 | #define cpu_set_ccr(PROC,VAL) ((PROC)->cpu_regs.ccr = (VAL)) | |
286 | #define cpu_get_ccr_H(PROC) ((cpu_get_ccr(PROC) & M6811_H_BIT) ? 1: 0) | |
287 | #define cpu_get_ccr_X(PROC) ((cpu_get_ccr(PROC) & M6811_X_BIT) ? 1: 0) | |
288 | #define cpu_get_ccr_S(PROC) ((cpu_get_ccr(PROC) & M6811_S_BIT) ? 1: 0) | |
289 | #define cpu_get_ccr_N(PROC) ((cpu_get_ccr(PROC) & M6811_N_BIT) ? 1: 0) | |
290 | #define cpu_get_ccr_V(PROC) ((cpu_get_ccr(PROC) & M6811_V_BIT) ? 1: 0) | |
291 | #define cpu_get_ccr_C(PROC) ((cpu_get_ccr(PROC) & M6811_C_BIT) ? 1: 0) | |
292 | #define cpu_get_ccr_Z(PROC) ((cpu_get_ccr(PROC) & M6811_Z_BIT) ? 1: 0) | |
293 | #define cpu_get_ccr_I(PROC) ((cpu_get_ccr(PROC) & M6811_I_BIT) ? 1: 0) | |
294 | ||
295 | #define cpu_set_ccr_flag(S,B,V) \ | |
296 | cpu_set_ccr(S,(cpu_get_ccr(S) & ~(B)) | ((V) ? B : 0)) | |
297 | ||
298 | #define cpu_set_ccr_H(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_H_BIT, VAL) | |
299 | #define cpu_set_ccr_X(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_X_BIT, VAL) | |
300 | #define cpu_set_ccr_S(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_S_BIT, VAL) | |
301 | #define cpu_set_ccr_N(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_N_BIT, VAL) | |
302 | #define cpu_set_ccr_V(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_V_BIT, VAL) | |
303 | #define cpu_set_ccr_C(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_C_BIT, VAL) | |
304 | #define cpu_set_ccr_Z(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_Z_BIT, VAL) | |
305 | #define cpu_set_ccr_I(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_I_BIT, VAL) | |
306 | ||
307 | #undef inline | |
308 | #define inline static __inline__ | |
309 | ||
310 | extern void cpu_memory_exception (struct _sim_cpu *proc, | |
311 | SIM_SIGNAL excep, | |
312 | uint16 addr, | |
313 | const char *message); | |
314 | ||
315 | inline uint8 | |
316 | memory_read8 (sim_cpu *cpu, uint16 addr) | |
317 | { | |
318 | uint8 val; | |
319 | ||
320 | if (sim_core_read_buffer (CPU_STATE (cpu), cpu, 0, &val, addr, 1) != 1) | |
321 | { | |
322 | cpu_memory_exception (cpu, SIM_SIGSEGV, addr, | |
323 | "Read error"); | |
324 | } | |
325 | return val; | |
326 | } | |
327 | ||
328 | inline void | |
329 | memory_write8 (sim_cpu *cpu, uint16 addr, uint8 val) | |
330 | { | |
331 | if (sim_core_write_buffer (CPU_STATE (cpu), cpu, 0, &val, addr, 1) != 1) | |
332 | { | |
333 | cpu_memory_exception (cpu, SIM_SIGSEGV, addr, | |
334 | "Write error"); | |
335 | } | |
336 | } | |
337 | ||
338 | inline uint16 | |
339 | memory_read16 (sim_cpu *cpu, uint16 addr) | |
340 | { | |
341 | uint8 b[2]; | |
342 | ||
343 | if (sim_core_read_buffer (CPU_STATE (cpu), cpu, 0, b, addr, 2) != 2) | |
344 | { | |
345 | cpu_memory_exception (cpu, SIM_SIGSEGV, addr, | |
346 | "Read error"); | |
347 | } | |
348 | return (((uint16) (b[0])) << 8) | ((uint16) b[1]); | |
349 | } | |
350 | ||
351 | inline void | |
352 | memory_write16 (sim_cpu *cpu, uint16 addr, uint16 val) | |
353 | { | |
354 | uint8 b[2]; | |
355 | ||
356 | b[0] = val >> 8; | |
357 | b[1] = val; | |
358 | if (sim_core_write_buffer (CPU_STATE (cpu), cpu, 0, b, addr, 2) != 2) | |
359 | { | |
360 | cpu_memory_exception (cpu, SIM_SIGSEGV, addr, | |
361 | "Write error"); | |
362 | } | |
363 | } | |
364 | extern void | |
365 | cpu_ccr_update_tst8 (sim_cpu *proc, uint8 val); | |
366 | ||
367 | inline void | |
368 | cpu_ccr_update_tst16 (sim_cpu *proc, uint16 val) | |
369 | { | |
370 | cpu_set_ccr_V (proc, 0); | |
371 | cpu_set_ccr_N (proc, val & 0x8000 ? 1 : 0); | |
372 | cpu_set_ccr_Z (proc, val == 0 ? 1 : 0); | |
373 | } | |
374 | ||
375 | inline void | |
376 | cpu_ccr_update_shift8 (sim_cpu *proc, uint8 val) | |
377 | { | |
378 | cpu_set_ccr_N (proc, val & 0x80 ? 1 : 0); | |
379 | cpu_set_ccr_Z (proc, val == 0 ? 1 : 0); | |
380 | cpu_set_ccr_V (proc, cpu_get_ccr_N (proc) ^ cpu_get_ccr_C (proc)); | |
381 | } | |
382 | ||
383 | inline void | |
384 | cpu_ccr_update_shift16 (sim_cpu *proc, uint16 val) | |
385 | { | |
386 | cpu_set_ccr_N (proc, val & 0x8000 ? 1 : 0); | |
387 | cpu_set_ccr_Z (proc, val == 0 ? 1 : 0); | |
388 | cpu_set_ccr_V (proc, cpu_get_ccr_N (proc) ^ cpu_get_ccr_C (proc)); | |
389 | } | |
390 | ||
391 | inline void | |
392 | cpu_ccr_update_add8 (sim_cpu *proc, uint8 r, uint8 a, uint8 b) | |
393 | { | |
394 | cpu_set_ccr_C (proc, ((a & b) | (b & ~r) | (a & ~r)) & 0x80 ? 1 : 0); | |
395 | cpu_set_ccr_V (proc, ((a & b & ~r) | (~a & ~b & r)) & 0x80 ? 1 : 0); | |
396 | cpu_set_ccr_Z (proc, r == 0); | |
397 | cpu_set_ccr_N (proc, r & 0x80 ? 1 : 0); | |
398 | } | |
399 | ||
400 | ||
401 | inline void | |
402 | cpu_ccr_update_sub8 (sim_cpu *proc, uint8 r, uint8 a, uint8 b) | |
403 | { | |
404 | cpu_set_ccr_C (proc, ((~a & b) | (b & r) | (~a & r)) & 0x80 ? 1 : 0); | |
405 | cpu_set_ccr_V (proc, ((a & ~b & ~r) | (~a & b & r)) & 0x80 ? 1 : 0); | |
406 | cpu_set_ccr_Z (proc, r == 0); | |
407 | cpu_set_ccr_N (proc, r & 0x80 ? 1 : 0); | |
408 | } | |
409 | ||
410 | inline void | |
411 | cpu_ccr_update_add16 (sim_cpu *proc, uint16 r, uint16 a, uint16 b) | |
412 | { | |
413 | cpu_set_ccr_C (proc, ((a & b) | (b & ~r) | (a & ~r)) & 0x8000 ? 1 : 0); | |
414 | cpu_set_ccr_V (proc, ((a & b & ~r) | (~a & ~b & r)) & 0x8000 ? 1 : 0); | |
415 | cpu_set_ccr_Z (proc, r == 0); | |
416 | cpu_set_ccr_N (proc, r & 0x8000 ? 1 : 0); | |
417 | } | |
418 | ||
419 | inline void | |
420 | cpu_ccr_update_sub16 (sim_cpu *proc, uint16 r, uint16 a, uint16 b) | |
421 | { | |
422 | cpu_set_ccr_C (proc, ((~a & b) | (b & r) | (~a & r)) & 0x8000 ? 1 : 0); | |
423 | cpu_set_ccr_V (proc, ((a & ~b & ~r) | (~a & b & r)) & 0x8000 ? 1 : 0); | |
424 | cpu_set_ccr_Z (proc, r == 0); | |
425 | cpu_set_ccr_N (proc, r & 0x8000 ? 1 : 0); | |
426 | } | |
427 | ||
81e09ed8 | 428 | /* Push and pop instructions for 68HC11 (next-available stack mode). */ |
e0709f50 | 429 | inline void |
81e09ed8 | 430 | cpu_m68hc11_push_uint8 (sim_cpu *proc, uint8 val) |
e0709f50 AC |
431 | { |
432 | uint16 addr = proc->cpu_regs.sp; | |
433 | ||
434 | memory_write8 (proc, addr, val); | |
435 | proc->cpu_regs.sp = addr - 1; | |
436 | proc->cpu_need_update_frame |= CPU_PUSH; | |
437 | } | |
438 | ||
439 | inline void | |
81e09ed8 | 440 | cpu_m68hc11_push_uint16 (sim_cpu *proc, uint16 val) |
e0709f50 AC |
441 | { |
442 | uint16 addr = proc->cpu_regs.sp - 1; | |
443 | ||
444 | memory_write16 (proc, addr, val); | |
445 | proc->cpu_regs.sp = addr - 1; | |
446 | proc->cpu_need_update_frame |= CPU_PUSH; | |
447 | } | |
448 | ||
449 | inline uint8 | |
81e09ed8 | 450 | cpu_m68hc11_pop_uint8 (sim_cpu *proc) |
e0709f50 AC |
451 | { |
452 | uint16 addr = proc->cpu_regs.sp; | |
453 | uint8 val; | |
454 | ||
455 | val = memory_read8 (proc, addr + 1); | |
456 | proc->cpu_regs.sp = addr + 1; | |
457 | proc->cpu_need_update_frame |= CPU_POP; | |
458 | return val; | |
459 | } | |
460 | ||
461 | inline uint16 | |
81e09ed8 | 462 | cpu_m68hc11_pop_uint16 (sim_cpu *proc) |
e0709f50 AC |
463 | { |
464 | uint16 addr = proc->cpu_regs.sp; | |
465 | uint16 val; | |
466 | ||
467 | val = memory_read16 (proc, addr + 1); | |
468 | proc->cpu_regs.sp = addr + 2; | |
469 | proc->cpu_need_update_frame |= CPU_POP; | |
470 | return val; | |
471 | } | |
472 | ||
81e09ed8 SC |
473 | /* Push and pop instructions for 68HC12 (last-used stack mode). */ |
474 | inline void | |
475 | cpu_m68hc12_push_uint8 (sim_cpu *proc, uint8 val) | |
476 | { | |
477 | uint16 addr = proc->cpu_regs.sp; | |
478 | ||
479 | addr --; | |
480 | memory_write8 (proc, addr, val); | |
481 | proc->cpu_regs.sp = addr; | |
482 | proc->cpu_need_update_frame |= CPU_PUSH; | |
483 | } | |
484 | ||
485 | inline void | |
486 | cpu_m68hc12_push_uint16 (sim_cpu *proc, uint16 val) | |
487 | { | |
488 | uint16 addr = proc->cpu_regs.sp; | |
489 | ||
490 | addr -= 2; | |
491 | memory_write16 (proc, addr, val); | |
492 | proc->cpu_regs.sp = addr; | |
493 | proc->cpu_need_update_frame |= CPU_PUSH; | |
494 | } | |
495 | ||
496 | inline uint8 | |
497 | cpu_m68hc12_pop_uint8 (sim_cpu *proc) | |
498 | { | |
499 | uint16 addr = proc->cpu_regs.sp; | |
500 | uint8 val; | |
501 | ||
502 | val = memory_read8 (proc, addr); | |
503 | proc->cpu_regs.sp = addr + 1; | |
504 | proc->cpu_need_update_frame |= CPU_POP; | |
505 | return val; | |
506 | } | |
507 | ||
508 | inline uint16 | |
509 | cpu_m68hc12_pop_uint16 (sim_cpu *proc) | |
510 | { | |
511 | uint16 addr = proc->cpu_regs.sp; | |
512 | uint16 val; | |
513 | ||
514 | val = memory_read16 (proc, addr); | |
515 | proc->cpu_regs.sp = addr + 2; | |
516 | proc->cpu_need_update_frame |= CPU_POP; | |
517 | return val; | |
518 | } | |
519 | ||
520 | /* Fetch a 8/16 bit value and update the PC. */ | |
e0709f50 AC |
521 | inline uint8 |
522 | cpu_fetch8 (sim_cpu *proc) | |
523 | { | |
524 | uint16 addr = proc->cpu_regs.pc; | |
525 | uint8 val; | |
526 | ||
527 | val = memory_read8 (proc, addr); | |
528 | proc->cpu_regs.pc = addr + 1; | |
529 | return val; | |
530 | } | |
531 | ||
532 | inline uint16 | |
533 | cpu_fetch16 (sim_cpu *proc) | |
534 | { | |
535 | uint16 addr = proc->cpu_regs.pc; | |
536 | uint16 val; | |
537 | ||
538 | val = memory_read16 (proc, addr); | |
539 | proc->cpu_regs.pc = addr + 2; | |
540 | return val; | |
541 | } | |
542 | ||
543 | extern void cpu_call (sim_cpu* proc, uint16 addr); | |
81e09ed8 SC |
544 | extern void cpu_exg (sim_cpu* proc, uint8 code); |
545 | extern void cpu_dbcc (sim_cpu* proc); | |
e0709f50 | 546 | extern void cpu_special (sim_cpu *proc, enum M6811_Special special); |
81e09ed8 SC |
547 | extern void cpu_move8 (sim_cpu *proc, uint8 op); |
548 | extern void cpu_move16 (sim_cpu *proc, uint8 op); | |
e0709f50 AC |
549 | |
550 | extern uint16 cpu_fetch_relbranch (sim_cpu *proc); | |
81e09ed8 | 551 | extern uint16 cpu_fetch_relbranch16 (sim_cpu *proc); |
e0709f50 AC |
552 | extern void cpu_push_all (sim_cpu *proc); |
553 | extern void cpu_single_step (sim_cpu *proc); | |
554 | ||
555 | extern void cpu_info (SIM_DESC sd, sim_cpu *proc); | |
556 | ||
557 | extern int cpu_initialize (SIM_DESC sd, sim_cpu *cpu); | |
558 | ||
559 | extern void cpu_print_frame (SIM_DESC sd, sim_cpu *cpu); | |
560 | extern void cpu_set_sp (sim_cpu *cpu, uint16 val); | |
561 | extern uint16 cpu_frame_reg (sim_cpu *cpu, uint16 rn); | |
562 | extern int cpu_reset (sim_cpu *cpu); | |
563 | extern int cpu_restart (sim_cpu *cpu); | |
564 | extern void sim_memory_error (sim_cpu *cpu, SIM_SIGNAL excep, | |
565 | uint16 addr, const char *message, ...); | |
566 | extern void emul_os (int op, sim_cpu *cpu); | |
81e09ed8 SC |
567 | extern void cpu_interp_m6811 (sim_cpu *cpu); |
568 | extern void cpu_interp_m6812 (sim_cpu *cpu); | |
e0709f50 AC |
569 | |
570 | /* The current state of the processor; registers, memory, etc. */ | |
571 | ||
572 | #define CIA_GET(CPU) (cpu_get_pc (CPU)) | |
573 | #define CIA_SET(CPU,VAL) (cpu_set_pc ((CPU), (VAL))) | |
574 | ||
575 | #if (WITH_SMP) | |
576 | #define STATE_CPU(sd,n) (&(sd)->cpu[n]) | |
577 | #else | |
578 | #define STATE_CPU(sd,n) (&(sd)->cpu[0]) | |
579 | #endif | |
580 | ||
581 | struct sim_state { | |
582 | sim_cpu cpu[MAX_NR_PROCESSORS]; | |
583 | device *devices; | |
584 | sim_state_base base; | |
585 | }; | |
586 | ||
587 | extern void sim_set_profile (int n); | |
588 | extern void sim_set_profile_size (int n); | |
589 | extern void sim_board_reset (SIM_DESC sd); | |
590 | ||
2990a9f4 SC |
591 | extern const char *cycle_to_string (sim_cpu *cpu, signed64 t); |
592 | ||
e0709f50 AC |
593 | #endif |
594 | ||
595 |