2 * PPC emulation cpu definitions for qemu.
4 * Copyright (c) 2003 Jocelyn Mayer
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library 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 GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 #if !defined (__CPU_PPC_H__)
23 #define TARGET_LONG_BITS 32
27 //#define USE_OPEN_FIRMWARE
29 /*** Sign extend constants ***/
31 static inline int32_t s_ext8 (uint8_t value)
39 static inline int32_t s_ext16 (uint16_t value)
41 int16_t *tmp = &value;
47 static inline int32_t s_ext24 (uint32_t value)
49 uint16_t utmp = (value >> 8) & 0xFFFF;
52 return (*tmp << 8) | (value & 0xFF);
58 /* Instruction types */
61 PPC_INTEGER = 0x0001, /* CPU has integer operations instructions */
62 PPC_FLOAT = 0x0002, /* CPU has floating point operations instructions */
63 PPC_FLOW = 0x0004, /* CPU has flow control instructions */
64 PPC_MEM = 0x0008, /* CPU has virtual memory instructions */
65 PPC_RES = 0x0010, /* CPU has ld/st with reservation instructions */
66 PPC_CACHE = 0x0020, /* CPU has cache control instructions */
67 PPC_MISC = 0x0040, /* CPU has spr/msr access instructions */
68 PPC_EXTERN = 0x0080, /* CPU has external control instructions */
69 PPC_SEGMENT = 0x0100, /* CPU has memory segment instructions */
70 PPC_CACHE_OPT= 0x0200,
71 PPC_FLOAT_OPT= 0x0400,
75 #define PPC_COMMON (PPC_INTEGER | PPC_FLOAT | PPC_FLOW | PPC_MEM | \
76 PPC_RES | PPC_CACHE | PPC_MISC | PPC_SEGMENT)
77 /* PPC 740/745/750/755 (aka G3) has external access instructions */
78 #define PPC_750 (PPC_INTEGER | PPC_FLOAT | PPC_FLOW | PPC_MEM | \
79 PPC_RES | PPC_CACHE | PPC_MISC | PPC_EXTERN | PPC_SEGMENT)
81 typedef struct ppc_tb_t ppc_tb_t;
83 /* Supervisor mode registers */
84 /* Machine state register */
100 #define msr_pow env->msr[MSR_POW]
101 #define msr_ile env->msr[MSR_ILE]
102 #define msr_ee env->msr[MSR_EE]
103 #define msr_pr env->msr[MSR_PR]
104 #define msr_fp env->msr[MSR_FP]
105 #define msr_me env->msr[MSR_ME]
106 #define msr_fe0 env->msr[MSR_FE0]
107 #define msr_se env->msr[MSR_SE]
108 #define msr_be env->msr[MSR_BE]
109 #define msr_fe1 env->msr[MSR_FE1]
110 #define msr_ip env->msr[MSR_IP]
111 #define msr_ir env->msr[MSR_IR]
112 #define msr_dr env->msr[MSR_DR]
113 #define msr_ri env->msr[MSR_RI]
114 #define msr_le env->msr[MSR_LE]
116 /* Segment registers */
117 typedef struct CPUPPCState {
118 /* general purpose registers */
120 /* floating point registers */
122 /* segment registers */
127 /* Reservation address */
129 /* machine state register */
131 /* condition register */
133 /* floating point status and control register */
136 /* special purpose registers */
145 /* temporary float registers */
149 int interrupt_request;
153 int access_type; /* when a memory exception occurs, the access
154 type is stored here */
155 int user_mode_only; /* user mode only simulation */
156 struct TranslationBlock *current_tb; /* currently executing TB */
157 /* soft mmu support */
158 /* in order to avoid passing too many arguments to the memory
159 write helpers, we store some rarely used information in the CPU
161 unsigned long mem_write_pc; /* host pc at which the memory was
163 unsigned long mem_write_vaddr; /* target virtual addr at which the
164 memory was written */
165 /* 0 = kernel, 1 = user (may have 2 = kernel code, 3 = user code ?) */
166 CPUTLBEntry tlb_read[2][CPU_TLB_SIZE];
167 CPUTLBEntry tlb_write[2][CPU_TLB_SIZE];
169 /* ice debug support */
170 uint32_t breakpoints[MAX_BREAKPOINTS];
172 int singlestep_enabled; /* XXX: should use CPU single step mode instead */
174 /* Time base and decrementer */
177 /* Power management */
184 CPUPPCState *cpu_ppc_init(void);
185 int cpu_ppc_exec(CPUPPCState *s);
186 void cpu_ppc_close(CPUPPCState *s);
187 /* you can call this signal handler from your SIGBUS and SIGSEGV
188 signal handlers to inform the virtual CPU of exceptions. non zero
189 is returned if the signal was handled by the virtual CPU. */
191 int cpu_ppc_signal_handler(int host_signum, struct siginfo *info,
194 void do_interrupt (CPUPPCState *env);
195 void cpu_loop_exit(void);
197 void cpu_ppc_dump_state(CPUPPCState *env, FILE *f, int flags);
198 void dump_stack (CPUPPCState *env);
200 uint32_t _load_xer (CPUPPCState *env);
201 void _store_xer (CPUPPCState *env, uint32_t value);
202 uint32_t _load_msr (CPUPPCState *env);
203 void _store_msr (CPUPPCState *env, uint32_t value);
205 /* Time-base and decrementer management */
206 #ifndef NO_CPU_IO_DEFS
207 uint32_t cpu_ppc_load_tbl (CPUPPCState *env);
208 uint32_t cpu_ppc_load_tbu (CPUPPCState *env);
209 void cpu_ppc_store_tbu (CPUPPCState *env, uint32_t value);
210 void cpu_ppc_store_tbl (CPUPPCState *env, uint32_t value);
211 uint32_t cpu_ppc_load_decr (CPUPPCState *env);
212 void cpu_ppc_store_decr (CPUPPCState *env, uint32_t value);
215 #define TARGET_PAGE_BITS 12
218 #define ugpr(n) (env->gpr[n])
219 #define fprd(n) (env->fpr[n])
220 #define fprs(n) ((float)env->fpr[n])
221 #define fpru(n) ((uint32_t)env->fpr[n])
222 #define fpri(n) ((int32_t)env->fpr[n])
224 #define SPR_ENCODE(sprn) \
225 (((sprn) >> 5) | (((sprn) & 0x1F) << 5))
228 #define spr(n) env->spr[n]
233 #define xer_so env->xer[3]
234 #define xer_ov env->xer[2]
235 #define xer_ca env->xer[1]
236 #define xer_bc env->xer[0]
238 #define XER SPR_ENCODE(1)
239 #define LR SPR_ENCODE(8)
240 #define CTR SPR_ENCODE(9)
242 #define V_TBL SPR_ENCODE(268)
243 #define V_TBU SPR_ENCODE(269)
244 /* supervisor mode SPR */
245 #define DSISR SPR_ENCODE(18)
246 #define DAR SPR_ENCODE(19)
247 #define DECR SPR_ENCODE(22)
248 #define SDR1 SPR_ENCODE(25)
249 #define SRR0 SPR_ENCODE(26)
250 #define SRR1 SPR_ENCODE(27)
251 #define SPRG0 SPR_ENCODE(272)
252 #define SPRG1 SPR_ENCODE(273)
253 #define SPRG2 SPR_ENCODE(274)
254 #define SPRG3 SPR_ENCODE(275)
255 #define SPRG4 SPR_ENCODE(276)
256 #define SPRG5 SPR_ENCODE(277)
257 #define SPRG6 SPR_ENCODE(278)
258 #define SPRG7 SPR_ENCODE(279)
259 #define ASR SPR_ENCODE(280)
260 #define EAR SPR_ENCODE(282)
261 #define O_TBL SPR_ENCODE(284)
262 #define O_TBU SPR_ENCODE(285)
263 #define PVR SPR_ENCODE(287)
264 #define IBAT0U SPR_ENCODE(528)
265 #define IBAT0L SPR_ENCODE(529)
266 #define IBAT1U SPR_ENCODE(530)
267 #define IBAT1L SPR_ENCODE(531)
268 #define IBAT2U SPR_ENCODE(532)
269 #define IBAT2L SPR_ENCODE(533)
270 #define IBAT3U SPR_ENCODE(534)
271 #define IBAT3L SPR_ENCODE(535)
272 #define DBAT0U SPR_ENCODE(536)
273 #define DBAT0L SPR_ENCODE(537)
274 #define DBAT1U SPR_ENCODE(538)
275 #define DBAT1L SPR_ENCODE(539)
276 #define DBAT2U SPR_ENCODE(540)
277 #define DBAT2L SPR_ENCODE(541)
278 #define DBAT3U SPR_ENCODE(542)
279 #define DBAT3L SPR_ENCODE(543)
280 #define IBAT4U SPR_ENCODE(560)
281 #define IBAT4L SPR_ENCODE(561)
282 #define IBAT5U SPR_ENCODE(562)
283 #define IBAT5L SPR_ENCODE(563)
284 #define IBAT6U SPR_ENCODE(564)
285 #define IBAT6L SPR_ENCODE(565)
286 #define IBAT7U SPR_ENCODE(566)
287 #define IBAT7L SPR_ENCODE(567)
288 #define DBAT4U SPR_ENCODE(568)
289 #define DBAT4L SPR_ENCODE(569)
290 #define DBAT5U SPR_ENCODE(570)
291 #define DBAT5L SPR_ENCODE(571)
292 #define DBAT6U SPR_ENCODE(572)
293 #define DBAT6L SPR_ENCODE(573)
294 #define DBAT7U SPR_ENCODE(574)
295 #define DBAT7L SPR_ENCODE(575)
296 #define DABR SPR_ENCODE(1013)
297 #define DABR_MASK 0xFFFFFFF8
298 #define FPECR SPR_ENCODE(1022)
299 #define PIR SPR_ENCODE(1023)
301 #define TARGET_PAGE_BITS 12
304 /* Memory access type :
305 * may be needed for precise access rights control and precise exceptions.
308 /* 1 bit to define user level / supervisor access */
311 /* Type of instruction that generated the access */
312 ACCESS_CODE = 0x10, /* Code fetch access */
313 ACCESS_INT = 0x20, /* Integer load/store access */
314 ACCESS_FLOAT = 0x30, /* floating point load/store access */
315 ACCESS_RES = 0x40, /* load/store with reservation */
316 ACCESS_EXT = 0x50, /* external access */
317 ACCESS_CACHE = 0x60, /* Cache manipulation */
320 /*****************************************************************************/
324 /* PPC hardware exceptions : exception vector / 0x100 */
325 EXCP_RESET = 0x01, /* System reset */
326 EXCP_MACHINE_CHECK = 0x02, /* Machine check exception */
327 EXCP_DSI = 0x03, /* Impossible memory access */
328 EXCP_ISI = 0x04, /* Impossible instruction fetch */
329 EXCP_EXTERNAL = 0x05, /* External interruption */
330 EXCP_ALIGN = 0x06, /* Alignment exception */
331 EXCP_PROGRAM = 0x07, /* Program exception */
332 EXCP_NO_FP = 0x08, /* No floating point */
333 EXCP_DECR = 0x09, /* Decrementer exception */
334 EXCP_RESA = 0x0A, /* Implementation specific */
335 EXCP_RESB = 0x0B, /* Implementation specific */
336 EXCP_SYSCALL = 0x0C, /* System call */
337 EXCP_TRACE = 0x0D, /* Trace exception (optional) */
338 EXCP_FP_ASSIST = 0x0E, /* Floating-point assist (optional) */
339 /* MPC740/745/750 & IBM 750 */
340 EXCP_PERF = 0x0F, /* Performance monitor */
341 EXCP_IABR = 0x13, /* Instruction address breakpoint */
342 EXCP_SMI = 0x14, /* System management interrupt */
343 EXCP_THRM = 0x15, /* Thermal management interrupt */
345 EXCP_TLBMISS = 0x10, /* Instruction TLB miss */
346 EXCP_TLBMISS_DL = 0x11, /* Data TLB miss for load */
347 EXCP_TLBMISS_DS = 0x12, /* Data TLB miss for store */
350 EXCP_OFCALL = 0x20, /* Call open-firmware emulator */
351 EXCP_RTASCALL = 0x21, /* Call RTAS emulator */
352 /* Special cases where we want to stop translation */
353 EXCP_MTMSR = 0x104, /* mtmsr instruction: */
354 /* may change privilege level */
355 EXCP_BRANCH = 0x108, /* branch instruction */
356 EXCP_RFI = 0x10C, /* return from interrupt */
357 EXCP_SYSCALL_USER = 0x110, /* System call in user mode only */
361 /* Exception subtypes for EXCP_DSI */
362 EXCP_DSI_TRANSLATE = 0x01, /* Data address can't be translated */
363 EXCP_DSI_NOTSUP = 0x02, /* Access type not supported */
364 EXCP_DSI_PROT = 0x03, /* Memory protection violation */
365 EXCP_DSI_EXTERNAL = 0x04, /* External access disabled */
366 EXCP_DSI_DABR = 0x05, /* Data address breakpoint */
367 /* flags for EXCP_DSI */
368 EXCP_DSI_DIRECT = 0x10,
369 EXCP_DSI_STORE = 0x20,
370 EXCP_DSI_ECXW = 0x40,
371 /* Exception subtypes for EXCP_ISI */
372 EXCP_ISI_TRANSLATE = 0x01, /* Code address can't be translated */
373 EXCP_ISI_NOEXEC = 0x02, /* Try to fetch from a data segment */
374 EXCP_ISI_GUARD = 0x03, /* Fetch from guarded memory */
375 EXCP_ISI_PROT = 0x04, /* Memory protection violation */
376 EXCP_ISI_DIRECT = 0x05, /* Trying to fetch from *
377 * a direct store segment */
378 /* Exception subtypes for EXCP_ALIGN */
379 EXCP_ALIGN_FP = 0x01, /* FP alignment exception */
380 EXCP_ALIGN_LST = 0x02, /* Unaligned mult/extern load/store */
381 EXCP_ALIGN_LE = 0x03, /* Multiple little-endian access */
382 EXCP_ALIGN_PROT = 0x04, /* Access cross protection boundary */
383 EXCP_ALIGN_BAT = 0x05, /* Access cross a BAT/seg boundary */
384 EXCP_ALIGN_CACHE = 0x06, /* Impossible dcbz access */
385 /* Exception subtypes for EXCP_PROGRAM */
388 EXCP_FP_OX = 0x01, /* FP overflow */
389 EXCP_FP_UX = 0x02, /* FP underflow */
390 EXCP_FP_ZX = 0x03, /* FP divide by zero */
391 EXCP_FP_XX = 0x04, /* FP inexact */
392 EXCP_FP_VXNAN = 0x05, /* FP invalid SNaN op */
393 EXCP_FP_VXISI = 0x06, /* FP invalid infinite substraction */
394 EXCP_FP_VXIDI = 0x07, /* FP invalid infinite divide */
395 EXCP_FP_VXZDZ = 0x08, /* FP invalid zero divide */
396 EXCP_FP_VXIMZ = 0x09, /* FP invalid infinite * zero */
397 EXCP_FP_VXVC = 0x0A, /* FP invalid compare */
398 EXCP_FP_VXSOFT = 0x0B, /* FP invalid operation */
399 EXCP_FP_VXSQRT = 0x0C, /* FP invalid square root */
400 EXCP_FP_VXCVI = 0x0D, /* FP invalid integer conversion */
401 /* Invalid instruction */
403 EXCP_INVAL_INVAL = 0x01, /* Invalid instruction */
404 EXCP_INVAL_LSWX = 0x02, /* Invalid lswx instruction */
405 EXCP_INVAL_SPR = 0x03, /* Invalid SPR access */
406 EXCP_INVAL_FP = 0x04, /* Unimplemented mandatory fp instr */
407 /* Privileged instruction */
409 EXCP_PRIV_OPC = 0x01,
410 EXCP_PRIV_REG = 0x02,
415 /*****************************************************************************/
417 #endif /* !defined (__CPU_PPC_H__) */