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1/*
2 * SH4 emulation
5fafdf24 3 *
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4 * Copyright (c) 2005 Samuel Tardieu
5 *
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.
10 *
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.
15 *
16 * You should have received a copy of the GNU Lesser General Public
8167ee88 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
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18 */
19#ifndef _CPU_SH4_H
20#define _CPU_SH4_H
21
22#include "config.h"
9a78eead 23#include "qemu-common.h"
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24
25#define TARGET_LONG_BITS 32
26#define TARGET_HAS_ICE 1
27
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28#define ELF_MACHINE EM_SH
29
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30/* CPU Subtypes */
31#define SH_CPU_SH7750 (1 << 0)
32#define SH_CPU_SH7750S (1 << 1)
33#define SH_CPU_SH7750R (1 << 2)
34#define SH_CPU_SH7751 (1 << 3)
35#define SH_CPU_SH7751R (1 << 4)
a9c43f8e 36#define SH_CPU_SH7785 (1 << 5)
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37#define SH_CPU_SH7750_ALL (SH_CPU_SH7750 | SH_CPU_SH7750S | SH_CPU_SH7750R)
38#define SH_CPU_SH7751_ALL (SH_CPU_SH7751 | SH_CPU_SH7751R)
39
9349b4f9 40#define CPUArchState struct CPUSH4State
c2764719 41
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42#include "cpu-defs.h"
43
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44#include "softfloat.h"
45
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46#define TARGET_PAGE_BITS 12 /* 4k XXXXX */
47
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48#define TARGET_PHYS_ADDR_SPACE_BITS 32
49#define TARGET_VIRT_ADDR_SPACE_BITS 32
50
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51#define SR_MD (1 << 30)
52#define SR_RB (1 << 29)
53#define SR_BL (1 << 28)
54#define SR_FD (1 << 15)
55#define SR_M (1 << 9)
56#define SR_Q (1 << 8)
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57#define SR_I3 (1 << 7)
58#define SR_I2 (1 << 6)
59#define SR_I1 (1 << 5)
60#define SR_I0 (1 << 4)
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61#define SR_S (1 << 1)
62#define SR_T (1 << 0)
63
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64#define FPSCR_MASK (0x003fffff)
65#define FPSCR_FR (1 << 21)
66#define FPSCR_SZ (1 << 20)
67#define FPSCR_PR (1 << 19)
68#define FPSCR_DN (1 << 18)
69#define FPSCR_CAUSE_MASK (0x3f << 12)
70#define FPSCR_CAUSE_SHIFT (12)
71#define FPSCR_CAUSE_E (1 << 17)
72#define FPSCR_CAUSE_V (1 << 16)
73#define FPSCR_CAUSE_Z (1 << 15)
74#define FPSCR_CAUSE_O (1 << 14)
75#define FPSCR_CAUSE_U (1 << 13)
76#define FPSCR_CAUSE_I (1 << 12)
77#define FPSCR_ENABLE_MASK (0x1f << 7)
78#define FPSCR_ENABLE_SHIFT (7)
79#define FPSCR_ENABLE_V (1 << 11)
80#define FPSCR_ENABLE_Z (1 << 10)
81#define FPSCR_ENABLE_O (1 << 9)
82#define FPSCR_ENABLE_U (1 << 8)
83#define FPSCR_ENABLE_I (1 << 7)
84#define FPSCR_FLAG_MASK (0x1f << 2)
85#define FPSCR_FLAG_SHIFT (2)
86#define FPSCR_FLAG_V (1 << 6)
87#define FPSCR_FLAG_Z (1 << 5)
88#define FPSCR_FLAG_O (1 << 4)
89#define FPSCR_FLAG_U (1 << 3)
90#define FPSCR_FLAG_I (1 << 2)
91#define FPSCR_RM_MASK (0x03 << 0)
92#define FPSCR_RM_NEAREST (0 << 0)
93#define FPSCR_RM_ZERO (1 << 0)
94
823029f9 95#define DELAY_SLOT (1 << 0)
fdf9b3e8 96#define DELAY_SLOT_CONDITIONAL (1 << 1)
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97#define DELAY_SLOT_TRUE (1 << 2)
98#define DELAY_SLOT_CLEARME (1 << 3)
99/* The dynamic value of the DELAY_SLOT_TRUE flag determines whether the jump
100 * after the delay slot should be taken or not. It is calculated from SR_T.
101 *
102 * It is unclear if it is permitted to modify the SR_T flag in a delay slot.
103 * The use of DELAY_SLOT_TRUE flag makes us accept such SR_T modification.
104 */
fdf9b3e8 105
fdf9b3e8 106typedef struct tlb_t {
fdf9b3e8 107 uint32_t vpn; /* virtual page number */
fdf9b3e8 108 uint32_t ppn; /* physical page number */
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109 uint32_t size; /* mapped page size in bytes */
110 uint8_t asid; /* address space identifier */
111 uint8_t v:1; /* validity */
112 uint8_t sz:2; /* page size */
113 uint8_t sh:1; /* share status */
114 uint8_t c:1; /* cacheability */
115 uint8_t pr:2; /* protection key */
116 uint8_t d:1; /* dirty */
117 uint8_t wt:1; /* write through */
118 uint8_t sa:3; /* space attribute (PCMCIA) */
119 uint8_t tc:1; /* timing control */
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120} tlb_t;
121
122#define UTLB_SIZE 64
123#define ITLB_SIZE 4
124
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125#define NB_MMU_MODES 2
126
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127enum sh_features {
128 SH_FEATURE_SH4A = 1,
c2432a42 129 SH_FEATURE_BCR3_AND_BCR4 = 2,
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130};
131
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132typedef struct memory_content {
133 uint32_t address;
134 uint32_t value;
135 struct memory_content *next;
136} memory_content;
137
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138typedef struct CPUSH4State {
139 uint32_t flags; /* general execution flags */
140 uint32_t gregs[24]; /* general registers */
e04ea3dc 141 float32 fregs[32]; /* floating point registers */
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142 uint32_t sr; /* status register */
143 uint32_t ssr; /* saved status register */
144 uint32_t spc; /* saved program counter */
145 uint32_t gbr; /* global base register */
146 uint32_t vbr; /* vector base register */
147 uint32_t sgr; /* saved global register 15 */
148 uint32_t dbr; /* debug base register */
149 uint32_t pc; /* program counter */
150 uint32_t delayed_pc; /* target of delayed jump */
151 uint32_t mach; /* multiply and accumulate high */
152 uint32_t macl; /* multiply and accumulate low */
153 uint32_t pr; /* procedure register */
154 uint32_t fpscr; /* floating point status/control register */
155 uint32_t fpul; /* floating point communication register */
156
17b086f7 157 /* float point status register */
ea6cf6be 158 float_status fp_status;
eda9b09b 159
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160 /* The features that we should emulate. See sh_features above. */
161 uint32_t features;
162
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163 /* Those belong to the specific unit (SH7750) but are handled here */
164 uint32_t mmucr; /* MMU control register */
165 uint32_t pteh; /* page table entry high register */
166 uint32_t ptel; /* page table entry low register */
167 uint32_t ptea; /* page table entry assistance register */
168 uint32_t ttb; /* tranlation table base register */
169 uint32_t tea; /* TLB exception address register */
170 uint32_t tra; /* TRAPA exception register */
171 uint32_t expevt; /* exception event register */
172 uint32_t intevt; /* interrupt event register */
173
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174 tlb_t itlb[ITLB_SIZE]; /* instruction translation table */
175 tlb_t utlb[UTLB_SIZE]; /* unified translation table */
176
177 uint32_t ldst;
178
179 CPU_COMMON
180
181 int id; /* CPU model */
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182 uint32_t pvr; /* Processor Version Register */
183 uint32_t prr; /* Processor Revision Register */
184 uint32_t cvr; /* Cache Version Register */
185
e96e2044 186 void *intc_handle;
efac4154 187 int in_sleep; /* SR_BL ignored during sleep */
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188 memory_content *movcal_backup;
189 memory_content **movcal_backup_tail;
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190} CPUSH4State;
191
aaed909a 192CPUSH4State *cpu_sh4_init(const char *cpu_model);
fdf9b3e8 193int cpu_sh4_exec(CPUSH4State * s);
5fafdf24 194int cpu_sh4_signal_handler(int host_signum, void *pinfo,
5a7b542b 195 void *puc);
42083220 196int cpu_sh4_handle_mmu_fault(CPUSH4State * env, target_ulong address, int rw,
97b348e7 197 int mmu_idx);
0b5c1ce8 198#define cpu_handle_mmu_fault cpu_sh4_handle_mmu_fault
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199void do_interrupt(CPUSH4State * env);
200
9a78eead 201void sh4_cpu_list(FILE *f, fprintf_function cpu_fprintf);
3c7b48b7 202#if !defined(CONFIG_USER_ONLY)
e0bcb9ca 203void cpu_sh4_invalidate_tlb(CPUSH4State *s);
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204uint32_t cpu_sh4_read_mmaped_itlb_addr(CPUSH4State *s,
205 target_phys_addr_t addr);
c0f809c4 206void cpu_sh4_write_mmaped_itlb_addr(CPUSH4State *s, target_phys_addr_t addr,
9f97309a 207 uint32_t mem_value);
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208uint32_t cpu_sh4_read_mmaped_itlb_data(CPUSH4State *s,
209 target_phys_addr_t addr);
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210void cpu_sh4_write_mmaped_itlb_data(CPUSH4State *s, target_phys_addr_t addr,
211 uint32_t mem_value);
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212uint32_t cpu_sh4_read_mmaped_utlb_addr(CPUSH4State *s,
213 target_phys_addr_t addr);
c227f099 214void cpu_sh4_write_mmaped_utlb_addr(CPUSH4State *s, target_phys_addr_t addr,
9f97309a 215 uint32_t mem_value);
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216uint32_t cpu_sh4_read_mmaped_utlb_data(CPUSH4State *s,
217 target_phys_addr_t addr);
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218void cpu_sh4_write_mmaped_utlb_data(CPUSH4State *s, target_phys_addr_t addr,
219 uint32_t mem_value);
3c7b48b7 220#endif
fdf9b3e8 221
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222int cpu_sh4_is_cached(CPUSH4State * env, target_ulong addr);
223
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224static inline void cpu_set_tls(CPUSH4State *env, target_ulong newtls)
225{
226 env->gbr = newtls;
227}
228
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229void cpu_load_tlb(CPUSH4State * env);
230
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231#include "softfloat.h"
232
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233#define cpu_init cpu_sh4_init
234#define cpu_exec cpu_sh4_exec
235#define cpu_gen_code cpu_sh4_gen_code
236#define cpu_signal_handler cpu_sh4_signal_handler
0fd3ca30 237#define cpu_list sh4_cpu_list
9467d44c 238
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239/* MMU modes definitions */
240#define MMU_MODE0_SUFFIX _kernel
241#define MMU_MODE1_SUFFIX _user
242#define MMU_USER_IDX 1
73e5716c 243static inline int cpu_mmu_index (CPUSH4State *env)
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244{
245 return (env->sr & SR_MD) == 0 ? 1 : 0;
246}
247
6e68e076 248#if defined(CONFIG_USER_ONLY)
73e5716c 249static inline void cpu_clone_regs(CPUSH4State *env, target_ulong newsp)
6e68e076 250{
f8ed7070 251 if (newsp)
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252 env->gregs[15] = newsp;
253 env->gregs[0] = 0;
254}
255#endif
256
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257#include "cpu-all.h"
258
259/* Memory access type */
260enum {
261 /* Privilege */
262 ACCESS_PRIV = 0x01,
263 /* Direction */
264 ACCESS_WRITE = 0x02,
265 /* Type of instruction */
266 ACCESS_CODE = 0x10,
267 ACCESS_INT = 0x20
268};
269
270/* MMU control register */
271#define MMUCR 0x1F000010
272#define MMUCR_AT (1<<0)
e0bcb9ca 273#define MMUCR_TI (1<<2)
fdf9b3e8 274#define MMUCR_SV (1<<8)
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275#define MMUCR_URC_BITS (6)
276#define MMUCR_URC_OFFSET (10)
277#define MMUCR_URC_SIZE (1 << MMUCR_URC_BITS)
278#define MMUCR_URC_MASK (((MMUCR_URC_SIZE) - 1) << MMUCR_URC_OFFSET)
279static inline int cpu_mmucr_urc (uint32_t mmucr)
280{
281 return ((mmucr & MMUCR_URC_MASK) >> MMUCR_URC_OFFSET);
282}
283
284/* PTEH : Page Translation Entry High register */
285#define PTEH_ASID_BITS (8)
286#define PTEH_ASID_SIZE (1 << PTEH_ASID_BITS)
287#define PTEH_ASID_MASK (PTEH_ASID_SIZE - 1)
288#define cpu_pteh_asid(pteh) ((pteh) & PTEH_ASID_MASK)
289#define PTEH_VPN_BITS (22)
290#define PTEH_VPN_OFFSET (10)
291#define PTEH_VPN_SIZE (1 << PTEH_VPN_BITS)
292#define PTEH_VPN_MASK (((PTEH_VPN_SIZE) - 1) << PTEH_VPN_OFFSET)
293static inline int cpu_pteh_vpn (uint32_t pteh)
294{
295 return ((pteh & PTEH_VPN_MASK) >> PTEH_VPN_OFFSET);
296}
297
298/* PTEL : Page Translation Entry Low register */
299#define PTEL_V (1 << 8)
300#define cpu_ptel_v(ptel) (((ptel) & PTEL_V) >> 8)
301#define PTEL_C (1 << 3)
302#define cpu_ptel_c(ptel) (((ptel) & PTEL_C) >> 3)
303#define PTEL_D (1 << 2)
304#define cpu_ptel_d(ptel) (((ptel) & PTEL_D) >> 2)
305#define PTEL_SH (1 << 1)
306#define cpu_ptel_sh(ptel)(((ptel) & PTEL_SH) >> 1)
307#define PTEL_WT (1 << 0)
308#define cpu_ptel_wt(ptel) ((ptel) & PTEL_WT)
309
310#define PTEL_SZ_HIGH_OFFSET (7)
311#define PTEL_SZ_HIGH (1 << PTEL_SZ_HIGH_OFFSET)
312#define PTEL_SZ_LOW_OFFSET (4)
313#define PTEL_SZ_LOW (1 << PTEL_SZ_LOW_OFFSET)
314static inline int cpu_ptel_sz (uint32_t ptel)
315{
316 int sz;
317 sz = (ptel & PTEL_SZ_HIGH) >> PTEL_SZ_HIGH_OFFSET;
318 sz <<= 1;
319 sz |= (ptel & PTEL_SZ_LOW) >> PTEL_SZ_LOW_OFFSET;
320 return sz;
321}
322
323#define PTEL_PPN_BITS (19)
324#define PTEL_PPN_OFFSET (10)
325#define PTEL_PPN_SIZE (1 << PTEL_PPN_BITS)
326#define PTEL_PPN_MASK (((PTEL_PPN_SIZE) - 1) << PTEL_PPN_OFFSET)
327static inline int cpu_ptel_ppn (uint32_t ptel)
328{
329 return ((ptel & PTEL_PPN_MASK) >> PTEL_PPN_OFFSET);
330}
331
332#define PTEL_PR_BITS (2)
333#define PTEL_PR_OFFSET (5)
334#define PTEL_PR_SIZE (1 << PTEL_PR_BITS)
335#define PTEL_PR_MASK (((PTEL_PR_SIZE) - 1) << PTEL_PR_OFFSET)
336static inline int cpu_ptel_pr (uint32_t ptel)
337{
338 return ((ptel & PTEL_PR_MASK) >> PTEL_PR_OFFSET);
339}
340
341/* PTEA : Page Translation Entry Assistance register */
342#define PTEA_SA_BITS (3)
343#define PTEA_SA_SIZE (1 << PTEA_SA_BITS)
344#define PTEA_SA_MASK (PTEA_SA_SIZE - 1)
345#define cpu_ptea_sa(ptea) ((ptea) & PTEA_SA_MASK)
346#define PTEA_TC (1 << 3)
347#define cpu_ptea_tc(ptea) (((ptea) & PTEA_TC) >> 3)
fdf9b3e8 348
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349#define TB_FLAG_PENDING_MOVCA (1 << 4)
350
73e5716c 351static inline void cpu_get_tb_cpu_state(CPUSH4State *env, target_ulong *pc,
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352 target_ulong *cs_base, int *flags)
353{
354 *pc = env->pc;
355 *cs_base = 0;
356 *flags = (env->flags & (DELAY_SLOT | DELAY_SLOT_CONDITIONAL
357 | DELAY_SLOT_TRUE | DELAY_SLOT_CLEARME)) /* Bits 0- 3 */
358 | (env->fpscr & (FPSCR_FR | FPSCR_SZ | FPSCR_PR)) /* Bits 19-21 */
d8299bcc 359 | (env->sr & (SR_MD | SR_RB)) /* Bits 29-30 */
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360 | (env->sr & SR_FD) /* Bit 15 */
361 | (env->movcal_backup ? TB_FLAG_PENDING_MOVCA : 0); /* Bit 4 */
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362}
363
73e5716c 364static inline bool cpu_has_work(CPUSH4State *env)
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365{
366 return env->interrupt_request & CPU_INTERRUPT_HARD;
367}
368
369#include "exec-all.h"
370
73e5716c 371static inline void cpu_pc_from_tb(CPUSH4State *env, TranslationBlock *tb)
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372{
373 env->pc = tb->pc;
374 env->flags = tb->flags;
375}
376
fdf9b3e8 377#endif /* _CPU_SH4_H */