]> git.ipfire.org Git - thirdparty/binutils-gdb.git/blame - sim/m68hc11/sim-main.h
2003-08-08 Andrew Cagney <cagney@redhat.com>
[thirdparty/binutils-gdb.git] / sim / m68hc11 / sim-main.h
CommitLineData
81e09ed8 1/* sim-main.h -- Simulator for Motorola 68HC11 & 68HC12
5abb9efa 2 Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
63f36def 3 Written by Stephane Carrez (stcarrez@nerim.fr)
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4
5This file is part of GDB, the GNU debugger.
6
7This program is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2, or (at your option)
10any later version.
11
12This program is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License along
18with this program; if not, write to the Free Software Foundation, Inc.,
1959 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
30typedef 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
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39#include "gdb/callback.h"
40#include "gdb/remote-sim.h"
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41#include "opcode/m68hc11.h"
42#include "sim-types.h"
43
44typedef unsigned8 uint8;
45typedef unsigned16 uint16;
46typedef signed16 int16;
47typedef unsigned32 uint32;
48typedef signed32 int32;
49typedef unsigned64 uint64;
50typedef signed64 int64;
51
52struct _sim_cpu;
53
54#include "interrupts.h"
55#include <setjmp.h>
56
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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). */
60enum m68hc11_map_level
61{
62 M6811_IO_LEVEL,
63 M6811_EEPROM_LEVEL,
64 M6811_NVRAM_LEVEL,
65 M6811_RAM_LEVEL
66};
67
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68enum cpu_type
69{
70 CPU_M6811,
71 CPU_M6812
72};
63348d04 73
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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
63f36def 83#define PAGE_REGNUM 9
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84
85typedef struct m6811_regs {
86 unsigned short d;
87 unsigned short ix;
88 unsigned short iy;
89 unsigned short sp;
90 unsigned short pc;
91 unsigned char ccr;
63f36def 92 unsigned short page;
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93} m6811_regs;
94
95
96/* Description of 68HC11 IO registers. Such description is only provided
97 for the info command to display the current setting of IO registers
98 from GDB. */
99struct io_reg_desc
100{
101 int mask;
102 const char *short_name;
103 const char *long_name;
104};
105typedef struct io_reg_desc io_reg_desc;
106
107extern void print_io_reg_desc (SIM_DESC sd, io_reg_desc *desc, int val,
108 int mode);
109extern void print_io_byte (SIM_DESC sd, const char *name,
110 io_reg_desc *desc, uint8 val, uint16 addr);
111
112
81e09ed8 113/* List of special 68HC11&68HC12 instructions that are not handled by the
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114 'gencode.c' generator. These complex instructions are implemented
115 by 'cpu_special'. */
116enum M6811_Special
117{
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118 /* 68HC11 instructions. */
119 M6811_DAA,
120 M6811_EMUL_SYSCALL,
121 M6811_ILLEGAL,
e0709f50 122 M6811_RTI,
81e09ed8 123 M6811_STOP,
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124 M6811_SWI,
125 M6811_TEST,
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126 M6811_WAI,
127
128 /* 68HC12 instructions. */
129 M6812_BGND,
130 M6812_CALL,
63f36def 131 M6812_CALL_INDIRECT,
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132 M6812_IDIVS,
133 M6812_EDIV,
134 M6812_EDIVS,
135 M6812_EMACS,
136 M6812_EMUL,
137 M6812_EMULS,
138 M6812_ETBL,
139 M6812_MEM,
140 M6812_REV,
141 M6812_REVW,
142 M6812_RTC,
143 M6812_RTI,
144 M6812_WAV
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145};
146
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147#define M6811_MAX_PORTS (0x03f+1)
148#define M6812_MAX_PORTS (0x3ff+1)
149#define MAX_PORTS (M6812_MAX_PORTS)
e0709f50 150
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151struct _sim_cpu;
152
153typedef void (* cpu_interp) (struct _sim_cpu*);
154
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155struct _sim_cpu {
156 /* CPU registers. */
157 struct m6811_regs cpu_regs;
158
159 /* CPU interrupts. */
160 struct interrupts cpu_interrupts;
161
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162 /* Pointer to the interpretor routine. */
163 cpu_interp cpu_interpretor;
164
165 /* Pointer to the architecture currently configured in the simulator. */
166 const struct bfd_arch_info *cpu_configured_arch;
167
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168 /* CPU absolute cycle time. The cycle time is updated after
169 each instruction, by the number of cycles taken by the instruction.
170 It is cleared only when reset occurs. */
171 signed64 cpu_absolute_cycle;
172
173 /* Number of cycles to increment after the current instruction.
174 This is also the number of ticks for the generic event scheduler. */
175 uint8 cpu_current_cycle;
176 int cpu_emul_syscall;
177 int cpu_is_initialized;
178 int cpu_running;
179 int cpu_check_memory;
180 int cpu_stop_on_interrupt;
181
182 /* When this is set, start execution of program at address specified
183 in the ELF header. This is used for testing some programs that do not
184 have an interrupt table linked with them. Programs created during the
185 GCC validation are like this. A normal 68HC11 does not behave like
186 this (unless there is some OS or downloadable feature). */
187 int cpu_use_elf_start;
188
189 /* The starting address specified in ELF header. */
190 int cpu_elf_start;
191
192 uint16 cpu_insn_pc;
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193
194 /* CPU frequency. This is the quartz frequency. It is divided by 4 to
195 get the cycle time. This is used for the timer rate and for the baud
196 rate generation. */
197 unsigned long cpu_frequency;
198
199 /* The mode in which the CPU is configured (MODA and MODB pins). */
200 unsigned int cpu_mode;
201
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202 /* The cpu being configured. */
203 enum cpu_type cpu_type;
204
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205 /* Initial value of the CONFIG register. */
206 uint8 cpu_config;
207 uint8 cpu_use_local_config;
208
81e09ed8 209 uint8 ios[MAX_PORTS];
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210
211 struct hw *hw_cpu;
212
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213 /* ... base type ... */
214 sim_cpu_base base;
215};
216
217/* Returns the cpu absolute cycle time (A virtual counter incremented
218 at each 68HC11 E clock). */
219#define cpu_current_cycle(PROC) ((PROC)->cpu_absolute_cycle)
220#define cpu_add_cycles(PROC,T) ((PROC)->cpu_current_cycle += (signed64) (T))
221#define cpu_is_running(PROC) ((PROC)->cpu_running)
222
223/* Get the IO/RAM base addresses depending on the M6811_INIT register. */
224#define cpu_get_io_base(PROC) \
225 (((uint16)(((PROC)->ios[M6811_INIT]) & 0x0F))<<12)
226#define cpu_get_reg_base(PROC) \
227 (((uint16)(((PROC)->ios[M6811_INIT]) & 0xF0))<<8)
228
229/* Returns the different CPU registers. */
230#define cpu_get_ccr(PROC) ((PROC)->cpu_regs.ccr)
231#define cpu_get_pc(PROC) ((PROC)->cpu_regs.pc)
232#define cpu_get_d(PROC) ((PROC)->cpu_regs.d)
233#define cpu_get_x(PROC) ((PROC)->cpu_regs.ix)
234#define cpu_get_y(PROC) ((PROC)->cpu_regs.iy)
235#define cpu_get_sp(PROC) ((PROC)->cpu_regs.sp)
236#define cpu_get_a(PROC) ((PROC->cpu_regs.d >> 8) & 0x0FF)
237#define cpu_get_b(PROC) ((PROC->cpu_regs.d) & 0x0FF)
63f36def 238#define cpu_get_page(PROC) (PROC->cpu_regs.page)
e0709f50 239
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240/* 68HC12 specific and Motorola internal registers. */
241#define cpu_get_tmp3(PROC) (0)
242#define cpu_get_tmp2(PROC) (0)
243
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244#define cpu_set_d(PROC,VAL) (((PROC)->cpu_regs.d) = (VAL))
245#define cpu_set_x(PROC,VAL) (((PROC)->cpu_regs.ix) = (VAL))
246#define cpu_set_y(PROC,VAL) (((PROC)->cpu_regs.iy) = (VAL))
63f36def 247#define cpu_set_page(PROC,VAL) ((PROC->cpu_regs.page) = (VAL))
e0709f50 248
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249/* 68HC12 specific and Motorola internal registers. */
250#define cpu_set_tmp3(PROC,VAL) (0)
63f36def 251#define cpu_set_tmp2(PROC,VAL) (void) (0)
81e09ed8 252
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253#if 0
254/* This is a function in m68hc11_sim.c to keep track of the frame. */
255#define cpu_set_sp(PROC,VAL) (((PROC)->cpu_regs.sp) = (VAL))
256#endif
257
258#define cpu_set_pc(PROC,VAL) (((PROC)->cpu_regs.pc) = (VAL))
259
260#define cpu_set_a(PROC,VAL) \
261 cpu_set_d(PROC,((VAL) << 8) | cpu_get_b(PROC))
262#define cpu_set_b(PROC,VAL) \
263 cpu_set_d(PROC,((cpu_get_a(PROC)) << 8)|(VAL & 0x0FF))
264
265#define cpu_set_ccr(PROC,VAL) ((PROC)->cpu_regs.ccr = (VAL))
266#define cpu_get_ccr_H(PROC) ((cpu_get_ccr(PROC) & M6811_H_BIT) ? 1: 0)
267#define cpu_get_ccr_X(PROC) ((cpu_get_ccr(PROC) & M6811_X_BIT) ? 1: 0)
268#define cpu_get_ccr_S(PROC) ((cpu_get_ccr(PROC) & M6811_S_BIT) ? 1: 0)
269#define cpu_get_ccr_N(PROC) ((cpu_get_ccr(PROC) & M6811_N_BIT) ? 1: 0)
270#define cpu_get_ccr_V(PROC) ((cpu_get_ccr(PROC) & M6811_V_BIT) ? 1: 0)
271#define cpu_get_ccr_C(PROC) ((cpu_get_ccr(PROC) & M6811_C_BIT) ? 1: 0)
272#define cpu_get_ccr_Z(PROC) ((cpu_get_ccr(PROC) & M6811_Z_BIT) ? 1: 0)
273#define cpu_get_ccr_I(PROC) ((cpu_get_ccr(PROC) & M6811_I_BIT) ? 1: 0)
274
275#define cpu_set_ccr_flag(S,B,V) \
276cpu_set_ccr(S,(cpu_get_ccr(S) & ~(B)) | ((V) ? B : 0))
277
278#define cpu_set_ccr_H(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_H_BIT, VAL)
279#define cpu_set_ccr_X(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_X_BIT, VAL)
280#define cpu_set_ccr_S(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_S_BIT, VAL)
281#define cpu_set_ccr_N(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_N_BIT, VAL)
282#define cpu_set_ccr_V(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_V_BIT, VAL)
283#define cpu_set_ccr_C(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_C_BIT, VAL)
284#define cpu_set_ccr_Z(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_Z_BIT, VAL)
285#define cpu_set_ccr_I(PROC,VAL) cpu_set_ccr_flag(PROC, M6811_I_BIT, VAL)
286
287#undef inline
288#define inline static __inline__
289
290extern void cpu_memory_exception (struct _sim_cpu *proc,
291 SIM_SIGNAL excep,
292 uint16 addr,
293 const char *message);
294
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295inline address_word
296phys_to_virt (sim_cpu *cpu, address_word addr)
297{
298 if (addr >= 0x8000 && addr < 0xc000)
299 return ((address_word) (addr) - 0x8000)
300 + (((address_word) cpu->cpu_regs.page) << 14) + 0x01000000;
301 else
302 return (address_word) (addr);
303}
304
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305inline uint8
306memory_read8 (sim_cpu *cpu, uint16 addr)
307{
308 uint8 val;
63f36def 309
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310 if (sim_core_read_buffer (CPU_STATE (cpu), cpu, 0, &val, addr, 1) != 1)
311 {
312 cpu_memory_exception (cpu, SIM_SIGSEGV, addr,
313 "Read error");
314 }
315 return val;
316}
317
318inline void
319memory_write8 (sim_cpu *cpu, uint16 addr, uint8 val)
320{
321 if (sim_core_write_buffer (CPU_STATE (cpu), cpu, 0, &val, addr, 1) != 1)
322 {
323 cpu_memory_exception (cpu, SIM_SIGSEGV, addr,
324 "Write error");
325 }
326}
327
328inline uint16
329memory_read16 (sim_cpu *cpu, uint16 addr)
330{
331 uint8 b[2];
63f36def 332
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333 if (sim_core_read_buffer (CPU_STATE (cpu), cpu, 0, b, addr, 2) != 2)
334 {
335 cpu_memory_exception (cpu, SIM_SIGSEGV, addr,
336 "Read error");
337 }
338 return (((uint16) (b[0])) << 8) | ((uint16) b[1]);
339}
340
341inline void
342memory_write16 (sim_cpu *cpu, uint16 addr, uint16 val)
343{
344 uint8 b[2];
345
346 b[0] = val >> 8;
347 b[1] = val;
348 if (sim_core_write_buffer (CPU_STATE (cpu), cpu, 0, b, addr, 2) != 2)
349 {
350 cpu_memory_exception (cpu, SIM_SIGSEGV, addr,
351 "Write error");
352 }
353}
354extern void
355cpu_ccr_update_tst8 (sim_cpu *proc, uint8 val);
356
357 inline void
358cpu_ccr_update_tst16 (sim_cpu *proc, uint16 val)
359{
360 cpu_set_ccr_V (proc, 0);
361 cpu_set_ccr_N (proc, val & 0x8000 ? 1 : 0);
362 cpu_set_ccr_Z (proc, val == 0 ? 1 : 0);
363}
364
365 inline void
366cpu_ccr_update_shift8 (sim_cpu *proc, uint8 val)
367{
368 cpu_set_ccr_N (proc, val & 0x80 ? 1 : 0);
369 cpu_set_ccr_Z (proc, val == 0 ? 1 : 0);
370 cpu_set_ccr_V (proc, cpu_get_ccr_N (proc) ^ cpu_get_ccr_C (proc));
371}
372
373 inline void
374cpu_ccr_update_shift16 (sim_cpu *proc, uint16 val)
375{
376 cpu_set_ccr_N (proc, val & 0x8000 ? 1 : 0);
377 cpu_set_ccr_Z (proc, val == 0 ? 1 : 0);
378 cpu_set_ccr_V (proc, cpu_get_ccr_N (proc) ^ cpu_get_ccr_C (proc));
379}
380
381inline void
382cpu_ccr_update_add8 (sim_cpu *proc, uint8 r, uint8 a, uint8 b)
383{
384 cpu_set_ccr_C (proc, ((a & b) | (b & ~r) | (a & ~r)) & 0x80 ? 1 : 0);
385 cpu_set_ccr_V (proc, ((a & b & ~r) | (~a & ~b & r)) & 0x80 ? 1 : 0);
386 cpu_set_ccr_Z (proc, r == 0);
387 cpu_set_ccr_N (proc, r & 0x80 ? 1 : 0);
388}
389
390
391inline void
392cpu_ccr_update_sub8 (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
400inline void
401cpu_ccr_update_add16 (sim_cpu *proc, uint16 r, uint16 a, uint16 b)
402{
403 cpu_set_ccr_C (proc, ((a & b) | (b & ~r) | (a & ~r)) & 0x8000 ? 1 : 0);
404 cpu_set_ccr_V (proc, ((a & b & ~r) | (~a & ~b & r)) & 0x8000 ? 1 : 0);
405 cpu_set_ccr_Z (proc, r == 0);
406 cpu_set_ccr_N (proc, r & 0x8000 ? 1 : 0);
407}
408
409inline void
410cpu_ccr_update_sub16 (sim_cpu *proc, uint16 r, uint16 a, uint16 b)
411{
412 cpu_set_ccr_C (proc, ((~a & b) | (b & r) | (~a & r)) & 0x8000 ? 1 : 0);
413 cpu_set_ccr_V (proc, ((a & ~b & ~r) | (~a & b & r)) & 0x8000 ? 1 : 0);
414 cpu_set_ccr_Z (proc, r == 0);
415 cpu_set_ccr_N (proc, r & 0x8000 ? 1 : 0);
416}
417
81e09ed8 418/* Push and pop instructions for 68HC11 (next-available stack mode). */
e0709f50 419inline void
81e09ed8 420cpu_m68hc11_push_uint8 (sim_cpu *proc, uint8 val)
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421{
422 uint16 addr = proc->cpu_regs.sp;
423
424 memory_write8 (proc, addr, val);
425 proc->cpu_regs.sp = addr - 1;
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426}
427
428inline void
81e09ed8 429cpu_m68hc11_push_uint16 (sim_cpu *proc, uint16 val)
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430{
431 uint16 addr = proc->cpu_regs.sp - 1;
432
433 memory_write16 (proc, addr, val);
434 proc->cpu_regs.sp = addr - 1;
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435}
436
437inline uint8
81e09ed8 438cpu_m68hc11_pop_uint8 (sim_cpu *proc)
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439{
440 uint16 addr = proc->cpu_regs.sp;
441 uint8 val;
442
443 val = memory_read8 (proc, addr + 1);
444 proc->cpu_regs.sp = addr + 1;
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445 return val;
446}
447
448inline uint16
81e09ed8 449cpu_m68hc11_pop_uint16 (sim_cpu *proc)
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450{
451 uint16 addr = proc->cpu_regs.sp;
452 uint16 val;
453
454 val = memory_read16 (proc, addr + 1);
455 proc->cpu_regs.sp = addr + 2;
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456 return val;
457}
458
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459/* Push and pop instructions for 68HC12 (last-used stack mode). */
460inline void
461cpu_m68hc12_push_uint8 (sim_cpu *proc, uint8 val)
462{
463 uint16 addr = proc->cpu_regs.sp;
464
465 addr --;
466 memory_write8 (proc, addr, val);
467 proc->cpu_regs.sp = addr;
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468}
469
470inline void
471cpu_m68hc12_push_uint16 (sim_cpu *proc, uint16 val)
472{
473 uint16 addr = proc->cpu_regs.sp;
474
475 addr -= 2;
476 memory_write16 (proc, addr, val);
477 proc->cpu_regs.sp = addr;
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478}
479
480inline uint8
481cpu_m68hc12_pop_uint8 (sim_cpu *proc)
482{
483 uint16 addr = proc->cpu_regs.sp;
484 uint8 val;
485
486 val = memory_read8 (proc, addr);
487 proc->cpu_regs.sp = addr + 1;
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488 return val;
489}
490
491inline uint16
492cpu_m68hc12_pop_uint16 (sim_cpu *proc)
493{
494 uint16 addr = proc->cpu_regs.sp;
495 uint16 val;
496
497 val = memory_read16 (proc, addr);
498 proc->cpu_regs.sp = addr + 2;
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499 return val;
500}
501
502/* Fetch a 8/16 bit value and update the PC. */
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503inline uint8
504cpu_fetch8 (sim_cpu *proc)
505{
506 uint16 addr = proc->cpu_regs.pc;
507 uint8 val;
508
509 val = memory_read8 (proc, addr);
510 proc->cpu_regs.pc = addr + 1;
511 return val;
512}
513
514inline uint16
515cpu_fetch16 (sim_cpu *proc)
516{
517 uint16 addr = proc->cpu_regs.pc;
518 uint16 val;
519
520 val = memory_read16 (proc, addr);
521 proc->cpu_regs.pc = addr + 2;
522 return val;
523}
524
525extern void cpu_call (sim_cpu* proc, uint16 addr);
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526extern void cpu_exg (sim_cpu* proc, uint8 code);
527extern void cpu_dbcc (sim_cpu* proc);
e0709f50 528extern void cpu_special (sim_cpu *proc, enum M6811_Special special);
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529extern void cpu_move8 (sim_cpu *proc, uint8 op);
530extern void cpu_move16 (sim_cpu *proc, uint8 op);
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531
532extern uint16 cpu_fetch_relbranch (sim_cpu *proc);
81e09ed8 533extern uint16 cpu_fetch_relbranch16 (sim_cpu *proc);
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534extern void cpu_push_all (sim_cpu *proc);
535extern void cpu_single_step (sim_cpu *proc);
536
537extern void cpu_info (SIM_DESC sd, sim_cpu *proc);
538
539extern int cpu_initialize (SIM_DESC sd, sim_cpu *cpu);
540
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541/* Returns the address of a 68HC12 indexed operand.
542 Pre and post modifications are handled on the source register. */
543extern uint16 cpu_get_indexed_operand_addr (sim_cpu* cpu, int restrict);
544
545extern void cpu_return (sim_cpu *cpu);
e0709f50 546extern void cpu_set_sp (sim_cpu *cpu, uint16 val);
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547extern int cpu_reset (sim_cpu *cpu);
548extern int cpu_restart (sim_cpu *cpu);
549extern void sim_memory_error (sim_cpu *cpu, SIM_SIGNAL excep,
550 uint16 addr, const char *message, ...);
551extern void emul_os (int op, sim_cpu *cpu);
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552extern void cpu_interp_m6811 (sim_cpu *cpu);
553extern void cpu_interp_m6812 (sim_cpu *cpu);
e0709f50 554
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555extern int m68hc11cpu_set_oscillator (SIM_DESC sd, const char *port,
556 double ton, double toff,
557 signed64 repeat);
558extern int m68hc11cpu_clear_oscillator (SIM_DESC sd, const char *port);
559extern void m68hc11cpu_set_port (struct hw *me, sim_cpu *cpu,
560 unsigned addr, uint8 val);
561
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562/* The current state of the processor; registers, memory, etc. */
563
564#define CIA_GET(CPU) (cpu_get_pc (CPU))
565#define CIA_SET(CPU,VAL) (cpu_set_pc ((CPU), (VAL)))
566
567#if (WITH_SMP)
568#define STATE_CPU(sd,n) (&(sd)->cpu[n])
569#else
570#define STATE_CPU(sd,n) (&(sd)->cpu[0])
571#endif
572
573struct sim_state {
574 sim_cpu cpu[MAX_NR_PROCESSORS];
575 device *devices;
576 sim_state_base base;
577};
578
579extern void sim_set_profile (int n);
580extern void sim_set_profile_size (int n);
581extern void sim_board_reset (SIM_DESC sd);
582
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583extern const char *cycle_to_string (sim_cpu *cpu, signed64 t);
584
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585#endif
586
587