4 * Copyright (c) 2005 Samuel Tardieu
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 2.1 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, see <http://www.gnu.org/licenses/>.
24 #include "exec/cpu-defs.h"
25 #include "qemu/cpu-float.h"
28 #define SH_CPU_SH7750 (1 << 0)
29 #define SH_CPU_SH7750S (1 << 1)
30 #define SH_CPU_SH7750R (1 << 2)
31 #define SH_CPU_SH7751 (1 << 3)
32 #define SH_CPU_SH7751R (1 << 4)
33 #define SH_CPU_SH7785 (1 << 5)
34 #define SH_CPU_SH7750_ALL (SH_CPU_SH7750 | SH_CPU_SH7750S | SH_CPU_SH7750R)
35 #define SH_CPU_SH7751_ALL (SH_CPU_SH7751 | SH_CPU_SH7751R)
50 #define FPSCR_MASK (0x003fffff)
51 #define FPSCR_FR (1 << 21)
52 #define FPSCR_SZ (1 << 20)
53 #define FPSCR_PR (1 << 19)
54 #define FPSCR_DN (1 << 18)
55 #define FPSCR_CAUSE_MASK (0x3f << 12)
56 #define FPSCR_CAUSE_SHIFT (12)
57 #define FPSCR_CAUSE_E (1 << 17)
58 #define FPSCR_CAUSE_V (1 << 16)
59 #define FPSCR_CAUSE_Z (1 << 15)
60 #define FPSCR_CAUSE_O (1 << 14)
61 #define FPSCR_CAUSE_U (1 << 13)
62 #define FPSCR_CAUSE_I (1 << 12)
63 #define FPSCR_ENABLE_MASK (0x1f << 7)
64 #define FPSCR_ENABLE_SHIFT (7)
65 #define FPSCR_ENABLE_V (1 << 11)
66 #define FPSCR_ENABLE_Z (1 << 10)
67 #define FPSCR_ENABLE_O (1 << 9)
68 #define FPSCR_ENABLE_U (1 << 8)
69 #define FPSCR_ENABLE_I (1 << 7)
70 #define FPSCR_FLAG_MASK (0x1f << 2)
71 #define FPSCR_FLAG_SHIFT (2)
72 #define FPSCR_FLAG_V (1 << 6)
73 #define FPSCR_FLAG_Z (1 << 5)
74 #define FPSCR_FLAG_O (1 << 4)
75 #define FPSCR_FLAG_U (1 << 3)
76 #define FPSCR_FLAG_I (1 << 2)
77 #define FPSCR_RM_MASK (0x03 << 0)
78 #define FPSCR_RM_NEAREST (0 << 0)
79 #define FPSCR_RM_ZERO (1 << 0)
81 #define TB_FLAG_DELAY_SLOT (1 << 0)
82 #define TB_FLAG_DELAY_SLOT_COND (1 << 1)
83 #define TB_FLAG_DELAY_SLOT_RTE (1 << 2)
84 #define TB_FLAG_PENDING_MOVCA (1 << 3)
85 #define TB_FLAG_GUSA_SHIFT 4 /* [11:4] */
86 #define TB_FLAG_GUSA_EXCLUSIVE (1 << 12)
87 #define TB_FLAG_UNALIGN (1 << 13)
88 #define TB_FLAG_SR_FD (1 << SR_FD) /* 15 */
89 #define TB_FLAG_FPSCR_PR FPSCR_PR /* 19 */
90 #define TB_FLAG_FPSCR_SZ FPSCR_SZ /* 20 */
91 #define TB_FLAG_FPSCR_FR FPSCR_FR /* 21 */
92 #define TB_FLAG_SR_RB (1 << SR_RB) /* 29 */
93 #define TB_FLAG_SR_MD (1 << SR_MD) /* 30 */
95 #define TB_FLAG_DELAY_SLOT_MASK (TB_FLAG_DELAY_SLOT | \
96 TB_FLAG_DELAY_SLOT_COND | \
97 TB_FLAG_DELAY_SLOT_RTE)
98 #define TB_FLAG_GUSA_MASK ((0xff << TB_FLAG_GUSA_SHIFT) | \
99 TB_FLAG_GUSA_EXCLUSIVE)
100 #define TB_FLAG_FPSCR_MASK (TB_FLAG_FPSCR_PR | \
103 #define TB_FLAG_SR_MASK (TB_FLAG_SR_FD | \
106 #define TB_FLAG_ENVFLAGS_MASK (TB_FLAG_DELAY_SLOT_MASK | \
109 typedef struct tlb_t
{
110 uint32_t vpn
; /* virtual page number */
111 uint32_t ppn
; /* physical page number */
112 uint32_t size
; /* mapped page size in bytes */
113 uint8_t asid
; /* address space identifier */
114 uint8_t v
:1; /* validity */
115 uint8_t sz
:2; /* page size */
116 uint8_t sh
:1; /* share status */
117 uint8_t c
:1; /* cacheability */
118 uint8_t pr
:2; /* protection key */
119 uint8_t d
:1; /* dirty */
120 uint8_t wt
:1; /* write through */
121 uint8_t sa
:3; /* space attribute (PCMCIA) */
122 uint8_t tc
:1; /* timing control */
128 #define TARGET_INSN_START_EXTRA_WORDS 1
132 SH_FEATURE_BCR3_AND_BCR4
= 2,
135 typedef struct memory_content
{
138 struct memory_content
*next
;
141 typedef struct CPUArchState
{
142 uint32_t flags
; /* general execution flags */
143 uint32_t gregs
[24]; /* general registers */
144 float32 fregs
[32]; /* floating point registers */
145 uint32_t sr
; /* status register (with T split out) */
146 uint32_t sr_m
; /* M bit of status register */
147 uint32_t sr_q
; /* Q bit of status register */
148 uint32_t sr_t
; /* T bit of status register */
149 uint32_t ssr
; /* saved status register */
150 uint32_t spc
; /* saved program counter */
151 uint32_t gbr
; /* global base register */
152 uint32_t vbr
; /* vector base register */
153 uint32_t sgr
; /* saved global register 15 */
154 uint32_t dbr
; /* debug base register */
155 uint32_t pc
; /* program counter */
156 uint32_t delayed_pc
; /* target of delayed branch */
157 uint32_t delayed_cond
; /* condition of delayed branch */
158 uint32_t pr
; /* procedure register */
159 uint32_t fpscr
; /* floating point status/control register */
160 uint32_t fpul
; /* floating point communication register */
162 /* multiply and accumulate: high, low and combined. */
174 /* float point status register */
175 float_status fp_status
;
177 /* Those belong to the specific unit (SH7750) but are handled here */
178 uint32_t mmucr
; /* MMU control register */
179 uint32_t pteh
; /* page table entry high register */
180 uint32_t ptel
; /* page table entry low register */
181 uint32_t ptea
; /* page table entry assistance register */
182 uint32_t ttb
; /* translation table base register */
183 uint32_t tea
; /* TLB exception address register */
184 uint32_t tra
; /* TRAPA exception register */
185 uint32_t expevt
; /* exception event register */
186 uint32_t intevt
; /* interrupt event register */
188 tlb_t itlb
[ITLB_SIZE
]; /* instruction translation table */
189 tlb_t utlb
[UTLB_SIZE
]; /* unified translation table */
191 /* LDST = LOCK_ADDR != -1. */
195 /* Fields up to this point are cleared by a CPU reset */
196 struct {} end_reset_fields
;
198 /* Fields from here on are preserved over CPU reset. */
199 int id
; /* CPU model */
201 /* The features that we should emulate. See sh_features above. */
205 int in_sleep
; /* SR_BL ignored during sleep */
206 memory_content
*movcal_backup
;
207 memory_content
**movcal_backup_tail
;
224 * @parent_realize: The parent class' realize handler.
225 * @parent_phases: The parent class' reset phase handlers.
226 * @pvr: Processor Version Register
227 * @prr: Processor Revision Register
228 * @cvr: Cache Version Register
230 * A SuperH CPU model.
232 struct SuperHCPUClass
{
233 CPUClass parent_class
;
235 DeviceRealize parent_realize
;
236 ResettablePhases parent_phases
;
243 void superh_cpu_dump_state(CPUState
*cpu
, FILE *f
, int flags
);
244 int superh_cpu_gdb_read_register(CPUState
*cpu
, GByteArray
*buf
, int reg
);
245 int superh_cpu_gdb_write_register(CPUState
*cpu
, uint8_t *buf
, int reg
);
246 G_NORETURN
void superh_cpu_do_unaligned_access(CPUState
*cpu
, vaddr addr
,
247 MMUAccessType access_type
, int mmu_idx
,
250 void sh4_translate_init(void);
252 #if !defined(CONFIG_USER_ONLY)
253 hwaddr
superh_cpu_get_phys_page_debug(CPUState
*cpu
, vaddr addr
);
254 bool superh_cpu_tlb_fill(CPUState
*cs
, vaddr address
, int size
,
255 MMUAccessType access_type
, int mmu_idx
,
256 bool probe
, uintptr_t retaddr
);
257 void superh_cpu_do_interrupt(CPUState
*cpu
);
258 bool superh_cpu_exec_interrupt(CPUState
*cpu
, int int_req
);
259 void cpu_sh4_invalidate_tlb(CPUSH4State
*s
);
260 uint32_t cpu_sh4_read_mmaped_itlb_addr(CPUSH4State
*s
,
262 void cpu_sh4_write_mmaped_itlb_addr(CPUSH4State
*s
, hwaddr addr
,
264 uint32_t cpu_sh4_read_mmaped_itlb_data(CPUSH4State
*s
,
266 void cpu_sh4_write_mmaped_itlb_data(CPUSH4State
*s
, hwaddr addr
,
268 uint32_t cpu_sh4_read_mmaped_utlb_addr(CPUSH4State
*s
,
270 void cpu_sh4_write_mmaped_utlb_addr(CPUSH4State
*s
, hwaddr addr
,
272 uint32_t cpu_sh4_read_mmaped_utlb_data(CPUSH4State
*s
,
274 void cpu_sh4_write_mmaped_utlb_data(CPUSH4State
*s
, hwaddr addr
,
278 int cpu_sh4_is_cached(CPUSH4State
* env
, target_ulong addr
);
280 void cpu_load_tlb(CPUSH4State
* env
);
282 #define CPU_RESOLVING_TYPE TYPE_SUPERH_CPU
284 /* MMU modes definitions */
285 #define MMU_USER_IDX 1
287 #include "exec/cpu-all.h"
289 /* MMU control register */
290 #define MMUCR 0x1F000010
291 #define MMUCR_AT (1<<0)
292 #define MMUCR_TI (1<<2)
293 #define MMUCR_SV (1<<8)
294 #define MMUCR_URC_BITS (6)
295 #define MMUCR_URC_OFFSET (10)
296 #define MMUCR_URC_SIZE (1 << MMUCR_URC_BITS)
297 #define MMUCR_URC_MASK (((MMUCR_URC_SIZE) - 1) << MMUCR_URC_OFFSET)
298 static inline int cpu_mmucr_urc (uint32_t mmucr
)
300 return ((mmucr
& MMUCR_URC_MASK
) >> MMUCR_URC_OFFSET
);
303 /* PTEH : Page Translation Entry High register */
304 #define PTEH_ASID_BITS (8)
305 #define PTEH_ASID_SIZE (1 << PTEH_ASID_BITS)
306 #define PTEH_ASID_MASK (PTEH_ASID_SIZE - 1)
307 #define cpu_pteh_asid(pteh) ((pteh) & PTEH_ASID_MASK)
308 #define PTEH_VPN_BITS (22)
309 #define PTEH_VPN_OFFSET (10)
310 #define PTEH_VPN_SIZE (1 << PTEH_VPN_BITS)
311 #define PTEH_VPN_MASK (((PTEH_VPN_SIZE) - 1) << PTEH_VPN_OFFSET)
312 static inline int cpu_pteh_vpn (uint32_t pteh
)
314 return ((pteh
& PTEH_VPN_MASK
) >> PTEH_VPN_OFFSET
);
317 /* PTEL : Page Translation Entry Low register */
318 #define PTEL_V (1 << 8)
319 #define cpu_ptel_v(ptel) (((ptel) & PTEL_V) >> 8)
320 #define PTEL_C (1 << 3)
321 #define cpu_ptel_c(ptel) (((ptel) & PTEL_C) >> 3)
322 #define PTEL_D (1 << 2)
323 #define cpu_ptel_d(ptel) (((ptel) & PTEL_D) >> 2)
324 #define PTEL_SH (1 << 1)
325 #define cpu_ptel_sh(ptel)(((ptel) & PTEL_SH) >> 1)
326 #define PTEL_WT (1 << 0)
327 #define cpu_ptel_wt(ptel) ((ptel) & PTEL_WT)
329 #define PTEL_SZ_HIGH_OFFSET (7)
330 #define PTEL_SZ_HIGH (1 << PTEL_SZ_HIGH_OFFSET)
331 #define PTEL_SZ_LOW_OFFSET (4)
332 #define PTEL_SZ_LOW (1 << PTEL_SZ_LOW_OFFSET)
333 static inline int cpu_ptel_sz (uint32_t ptel
)
336 sz
= (ptel
& PTEL_SZ_HIGH
) >> PTEL_SZ_HIGH_OFFSET
;
338 sz
|= (ptel
& PTEL_SZ_LOW
) >> PTEL_SZ_LOW_OFFSET
;
342 #define PTEL_PPN_BITS (19)
343 #define PTEL_PPN_OFFSET (10)
344 #define PTEL_PPN_SIZE (1 << PTEL_PPN_BITS)
345 #define PTEL_PPN_MASK (((PTEL_PPN_SIZE) - 1) << PTEL_PPN_OFFSET)
346 static inline int cpu_ptel_ppn (uint32_t ptel
)
348 return ((ptel
& PTEL_PPN_MASK
) >> PTEL_PPN_OFFSET
);
351 #define PTEL_PR_BITS (2)
352 #define PTEL_PR_OFFSET (5)
353 #define PTEL_PR_SIZE (1 << PTEL_PR_BITS)
354 #define PTEL_PR_MASK (((PTEL_PR_SIZE) - 1) << PTEL_PR_OFFSET)
355 static inline int cpu_ptel_pr (uint32_t ptel
)
357 return ((ptel
& PTEL_PR_MASK
) >> PTEL_PR_OFFSET
);
360 /* PTEA : Page Translation Entry Assistance register */
361 #define PTEA_SA_BITS (3)
362 #define PTEA_SA_SIZE (1 << PTEA_SA_BITS)
363 #define PTEA_SA_MASK (PTEA_SA_SIZE - 1)
364 #define cpu_ptea_sa(ptea) ((ptea) & PTEA_SA_MASK)
365 #define PTEA_TC (1 << 3)
366 #define cpu_ptea_tc(ptea) (((ptea) & PTEA_TC) >> 3)
368 static inline target_ulong
cpu_read_sr(CPUSH4State
*env
)
370 return env
->sr
| (env
->sr_m
<< SR_M
) |
371 (env
->sr_q
<< SR_Q
) |
375 static inline void cpu_write_sr(CPUSH4State
*env
, target_ulong sr
)
377 env
->sr_m
= (sr
>> SR_M
) & 1;
378 env
->sr_q
= (sr
>> SR_Q
) & 1;
379 env
->sr_t
= (sr
>> SR_T
) & 1;
380 env
->sr
= sr
& ~((1u << SR_M
) | (1u << SR_Q
) | (1u << SR_T
));
383 static inline void cpu_get_tb_cpu_state(CPUSH4State
*env
, vaddr
*pc
,
384 uint64_t *cs_base
, uint32_t *flags
)
387 /* For a gUSA region, notice the end of the region. */
388 *cs_base
= env
->flags
& TB_FLAG_GUSA_MASK
? env
->gregs
[0] : 0;
390 | (env
->fpscr
& TB_FLAG_FPSCR_MASK
)
391 | (env
->sr
& TB_FLAG_SR_MASK
)
392 | (env
->movcal_backup
? TB_FLAG_PENDING_MOVCA
: 0); /* Bit 3 */
393 #ifdef CONFIG_USER_ONLY
394 *flags
|= TB_FLAG_UNALIGN
* !env_cpu(env
)->prctl_unalign_sigbus
;
398 #endif /* SH4_CPU_H */