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 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
25 #define TARGET_LONG_BITS 32
26 #define TARGET_HAS_ICE 1
28 #define ELF_MACHINE EM_SH
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)
36 #define SH_CPU_SH7785 (1 << 5)
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)
42 #include "softfloat.h"
44 #define TARGET_PAGE_BITS 12 /* 4k XXXXX */
46 #define SR_MD (1 << 30)
47 #define SR_RB (1 << 29)
48 #define SR_BL (1 << 28)
49 #define SR_FD (1 << 15)
52 #define SR_I3 (1 << 7)
53 #define SR_I2 (1 << 6)
54 #define SR_I1 (1 << 5)
55 #define SR_I0 (1 << 4)
59 #define FPSCR_FR (1 << 21)
60 #define FPSCR_SZ (1 << 20)
61 #define FPSCR_PR (1 << 19)
62 #define FPSCR_DN (1 << 18)
63 #define DELAY_SLOT (1 << 0)
64 #define DELAY_SLOT_CONDITIONAL (1 << 1)
65 #define DELAY_SLOT_TRUE (1 << 2)
66 #define DELAY_SLOT_CLEARME (1 << 3)
67 /* The dynamic value of the DELAY_SLOT_TRUE flag determines whether the jump
68 * after the delay slot should be taken or not. It is calculated from SR_T.
70 * It is unclear if it is permitted to modify the SR_T flag in a delay slot.
71 * The use of DELAY_SLOT_TRUE flag makes us accept such SR_T modification.
74 /* XXXXX The structure could be made more compact */
75 typedef struct tlb_t {
76 uint8_t asid; /* address space identifier */
77 uint32_t vpn; /* virtual page number */
78 uint8_t v; /* validity */
79 uint32_t ppn; /* physical page number */
80 uint8_t sz; /* page size */
81 uint32_t size; /* cached page size in bytes */
82 uint8_t sh; /* share status */
83 uint8_t c; /* cacheability */
84 uint8_t pr; /* protection key */
85 uint8_t d; /* dirty */
86 uint8_t wt; /* write through */
87 uint8_t sa; /* space attribute (PCMCIA) */
88 uint8_t tc; /* timing control */
94 #define NB_MMU_MODES 2
100 typedef struct CPUSH4State {
101 int id; /* CPU model */
103 uint32_t flags; /* general execution flags */
104 uint32_t gregs[24]; /* general registers */
105 float32 fregs[32]; /* floating point registers */
106 uint32_t sr; /* status register */
107 uint32_t ssr; /* saved status register */
108 uint32_t spc; /* saved program counter */
109 uint32_t gbr; /* global base register */
110 uint32_t vbr; /* vector base register */
111 uint32_t sgr; /* saved global register 15 */
112 uint32_t dbr; /* debug base register */
113 uint32_t pc; /* program counter */
114 uint32_t delayed_pc; /* target of delayed jump */
115 uint32_t mach; /* multiply and accumulate high */
116 uint32_t macl; /* multiply and accumulate low */
117 uint32_t pr; /* procedure register */
118 uint32_t fpscr; /* floating point status/control register */
119 uint32_t fpul; /* floating point communication register */
121 /* float point status register */
122 float_status fp_status;
124 /* The features that we should emulate. See sh_features above. */
127 /* Those belong to the specific unit (SH7750) but are handled here */
128 uint32_t mmucr; /* MMU control register */
129 uint32_t pteh; /* page table entry high register */
130 uint32_t ptel; /* page table entry low register */
131 uint32_t ptea; /* page table entry assistance register */
132 uint32_t ttb; /* tranlation table base register */
133 uint32_t tea; /* TLB exception address register */
134 uint32_t tra; /* TRAPA exception register */
135 uint32_t expevt; /* exception event register */
136 uint32_t intevt; /* interrupt event register */
138 uint32_t pvr; /* Processor Version Register */
139 uint32_t prr; /* Processor Revision Register */
140 uint32_t cvr; /* Cache Version Register */
142 CPU_COMMON tlb_t utlb[UTLB_SIZE]; /* unified translation table */
143 tlb_t itlb[ITLB_SIZE]; /* instruction translation table */
145 int intr_at_halt; /* SR_BL ignored during sleep */
148 CPUSH4State *cpu_sh4_init(const char *cpu_model);
149 int cpu_sh4_exec(CPUSH4State * s);
150 int cpu_sh4_signal_handler(int host_signum, void *pinfo,
152 int cpu_sh4_handle_mmu_fault(CPUSH4State * env, target_ulong address, int rw,
153 int mmu_idx, int is_softmmu);
154 void do_interrupt(CPUSH4State * env);
156 void sh4_cpu_list(FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...));
157 void cpu_sh4_write_mmaped_utlb_addr(CPUSH4State *s, target_phys_addr_t addr,
160 static inline void cpu_set_tls(CPUSH4State *env, target_ulong newtls)
165 #include "softfloat.h"
167 #define CPUState CPUSH4State
168 #define cpu_init cpu_sh4_init
169 #define cpu_exec cpu_sh4_exec
170 #define cpu_gen_code cpu_sh4_gen_code
171 #define cpu_signal_handler cpu_sh4_signal_handler
172 #define cpu_list sh4_cpu_list
174 /* MMU modes definitions */
175 #define MMU_MODE0_SUFFIX _kernel
176 #define MMU_MODE1_SUFFIX _user
177 #define MMU_USER_IDX 1
178 static inline int cpu_mmu_index (CPUState *env)
180 return (env->sr & SR_MD) == 0 ? 1 : 0;
183 #if defined(CONFIG_USER_ONLY)
184 static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
187 env->gregs[15] = newsp;
193 #include "exec-all.h"
195 /* Memory access type */
201 /* Type of instruction */
206 /* MMU control register */
207 #define MMUCR 0x1F000010
208 #define MMUCR_AT (1<<0)
209 #define MMUCR_SV (1<<8)
210 #define MMUCR_URC_BITS (6)
211 #define MMUCR_URC_OFFSET (10)
212 #define MMUCR_URC_SIZE (1 << MMUCR_URC_BITS)
213 #define MMUCR_URC_MASK (((MMUCR_URC_SIZE) - 1) << MMUCR_URC_OFFSET)
214 static inline int cpu_mmucr_urc (uint32_t mmucr)
216 return ((mmucr & MMUCR_URC_MASK) >> MMUCR_URC_OFFSET);
219 /* PTEH : Page Translation Entry High register */
220 #define PTEH_ASID_BITS (8)
221 #define PTEH_ASID_SIZE (1 << PTEH_ASID_BITS)
222 #define PTEH_ASID_MASK (PTEH_ASID_SIZE - 1)
223 #define cpu_pteh_asid(pteh) ((pteh) & PTEH_ASID_MASK)
224 #define PTEH_VPN_BITS (22)
225 #define PTEH_VPN_OFFSET (10)
226 #define PTEH_VPN_SIZE (1 << PTEH_VPN_BITS)
227 #define PTEH_VPN_MASK (((PTEH_VPN_SIZE) - 1) << PTEH_VPN_OFFSET)
228 static inline int cpu_pteh_vpn (uint32_t pteh)
230 return ((pteh & PTEH_VPN_MASK) >> PTEH_VPN_OFFSET);
233 /* PTEL : Page Translation Entry Low register */
234 #define PTEL_V (1 << 8)
235 #define cpu_ptel_v(ptel) (((ptel) & PTEL_V) >> 8)
236 #define PTEL_C (1 << 3)
237 #define cpu_ptel_c(ptel) (((ptel) & PTEL_C) >> 3)
238 #define PTEL_D (1 << 2)
239 #define cpu_ptel_d(ptel) (((ptel) & PTEL_D) >> 2)
240 #define PTEL_SH (1 << 1)
241 #define cpu_ptel_sh(ptel)(((ptel) & PTEL_SH) >> 1)
242 #define PTEL_WT (1 << 0)
243 #define cpu_ptel_wt(ptel) ((ptel) & PTEL_WT)
245 #define PTEL_SZ_HIGH_OFFSET (7)
246 #define PTEL_SZ_HIGH (1 << PTEL_SZ_HIGH_OFFSET)
247 #define PTEL_SZ_LOW_OFFSET (4)
248 #define PTEL_SZ_LOW (1 << PTEL_SZ_LOW_OFFSET)
249 static inline int cpu_ptel_sz (uint32_t ptel)
252 sz = (ptel & PTEL_SZ_HIGH) >> PTEL_SZ_HIGH_OFFSET;
254 sz |= (ptel & PTEL_SZ_LOW) >> PTEL_SZ_LOW_OFFSET;
258 #define PTEL_PPN_BITS (19)
259 #define PTEL_PPN_OFFSET (10)
260 #define PTEL_PPN_SIZE (1 << PTEL_PPN_BITS)
261 #define PTEL_PPN_MASK (((PTEL_PPN_SIZE) - 1) << PTEL_PPN_OFFSET)
262 static inline int cpu_ptel_ppn (uint32_t ptel)
264 return ((ptel & PTEL_PPN_MASK) >> PTEL_PPN_OFFSET);
267 #define PTEL_PR_BITS (2)
268 #define PTEL_PR_OFFSET (5)
269 #define PTEL_PR_SIZE (1 << PTEL_PR_BITS)
270 #define PTEL_PR_MASK (((PTEL_PR_SIZE) - 1) << PTEL_PR_OFFSET)
271 static inline int cpu_ptel_pr (uint32_t ptel)
273 return ((ptel & PTEL_PR_MASK) >> PTEL_PR_OFFSET);
276 /* PTEA : Page Translation Entry Assistance register */
277 #define PTEA_SA_BITS (3)
278 #define PTEA_SA_SIZE (1 << PTEA_SA_BITS)
279 #define PTEA_SA_MASK (PTEA_SA_SIZE - 1)
280 #define cpu_ptea_sa(ptea) ((ptea) & PTEA_SA_MASK)
281 #define PTEA_TC (1 << 3)
282 #define cpu_ptea_tc(ptea) (((ptea) & PTEA_TC) >> 3)
284 static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
287 env->flags = tb->flags;
290 static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
291 target_ulong *cs_base, int *flags)
295 *flags = (env->flags & (DELAY_SLOT | DELAY_SLOT_CONDITIONAL
296 | DELAY_SLOT_TRUE | DELAY_SLOT_CLEARME)) /* Bits 0- 3 */
297 | (env->fpscr & (FPSCR_FR | FPSCR_SZ | FPSCR_PR)) /* Bits 19-21 */
298 | (env->sr & (SR_MD | SR_RB)) /* Bits 29-30 */
299 | (env->sr & SR_FD); /* Bit 15 */
302 #endif /* _CPU_SH4_H */