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4acb54ba EI |
1 | /* |
2 | * MicroBlaze virtual CPU header | |
3 | * | |
4 | * Copyright (c) 2009 Edgar E. Iglesias | |
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 | * 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/>. |
4acb54ba EI |
18 | */ |
19 | #ifndef CPU_MICROBLAZE_H | |
20 | #define CPU_MICROBLAZE_H | |
21 | ||
22 | #define TARGET_LONG_BITS 32 | |
23 | ||
24 | #define CPUState struct CPUMBState | |
25 | ||
26 | #include "cpu-defs.h" | |
27 | struct CPUMBState; | |
28 | #if !defined(CONFIG_USER_ONLY) | |
29 | #include "mmu.h" | |
30 | #endif | |
31 | ||
32 | #define TARGET_HAS_ICE 1 | |
33 | ||
34 | #define ELF_MACHINE EM_XILINX_MICROBLAZE | |
35 | ||
36 | #define EXCP_NMI 1 | |
37 | #define EXCP_MMU 2 | |
38 | #define EXCP_IRQ 3 | |
39 | #define EXCP_BREAK 4 | |
40 | #define EXCP_HW_BREAK 5 | |
41 | ||
42 | /* Register aliases. R0 - R15 */ | |
43 | #define R_SP 1 | |
44 | #define SR_PC 0 | |
45 | #define SR_MSR 1 | |
46 | #define SR_EAR 3 | |
47 | #define SR_ESR 5 | |
48 | #define SR_FSR 7 | |
49 | #define SR_BTR 0xb | |
50 | #define SR_EDR 0xd | |
51 | ||
52 | /* MSR flags. */ | |
53 | #define MSR_BE (1<<0) /* 0x001 */ | |
54 | #define MSR_IE (1<<1) /* 0x002 */ | |
55 | #define MSR_C (1<<2) /* 0x004 */ | |
56 | #define MSR_BIP (1<<3) /* 0x008 */ | |
57 | #define MSR_FSL (1<<4) /* 0x010 */ | |
58 | #define MSR_ICE (1<<5) /* 0x020 */ | |
59 | #define MSR_DZ (1<<6) /* 0x040 */ | |
60 | #define MSR_DCE (1<<7) /* 0x080 */ | |
61 | #define MSR_EE (1<<8) /* 0x100 */ | |
62 | #define MSR_EIP (1<<9) /* 0x200 */ | |
63 | #define MSR_CC (1<<31) | |
64 | ||
65 | /* Machine State Register (MSR) Fields */ | |
66 | #define MSR_UM (1<<11) /* User Mode */ | |
67 | #define MSR_UMS (1<<12) /* User Mode Save */ | |
68 | #define MSR_VM (1<<13) /* Virtual Mode */ | |
69 | #define MSR_VMS (1<<14) /* Virtual Mode Save */ | |
70 | ||
71 | #define MSR_KERNEL MSR_EE|MSR_VM | |
72 | //#define MSR_USER MSR_KERNEL|MSR_UM|MSR_IE | |
73 | #define MSR_KERNEL_VMS MSR_EE|MSR_VMS | |
74 | //#define MSR_USER_VMS MSR_KERNEL_VMS|MSR_UMS|MSR_IE | |
75 | ||
76 | /* Exception State Register (ESR) Fields */ | |
77 | #define ESR_DIZ (1<<11) /* Zone Protection */ | |
78 | #define ESR_S (1<<10) /* Store instruction */ | |
79 | ||
80 | ||
81 | ||
82 | /* Version reg. */ | |
83 | /* Basic PVR mask */ | |
84 | #define PVR0_PVR_FULL_MASK 0x80000000 | |
85 | #define PVR0_USE_BARREL_MASK 0x40000000 | |
86 | #define PVR0_USE_DIV_MASK 0x20000000 | |
87 | #define PVR0_USE_HW_MUL_MASK 0x10000000 | |
88 | #define PVR0_USE_FPU_MASK 0x08000000 | |
89 | #define PVR0_USE_EXC_MASK 0x04000000 | |
90 | #define PVR0_USE_ICACHE_MASK 0x02000000 | |
91 | #define PVR0_USE_DCACHE_MASK 0x01000000 | |
92 | #define PVR0_USE_MMU 0x00800000 /* new */ | |
93 | #define PVR0_VERSION_MASK 0x0000FF00 | |
94 | #define PVR0_USER1_MASK 0x000000FF | |
95 | ||
96 | /* User 2 PVR mask */ | |
97 | #define PVR1_USER2_MASK 0xFFFFFFFF | |
98 | ||
99 | /* Configuration PVR masks */ | |
100 | #define PVR2_D_OPB_MASK 0x80000000 | |
101 | #define PVR2_D_LMB_MASK 0x40000000 | |
102 | #define PVR2_I_OPB_MASK 0x20000000 | |
103 | #define PVR2_I_LMB_MASK 0x10000000 | |
104 | #define PVR2_INTERRUPT_IS_EDGE_MASK 0x08000000 | |
105 | #define PVR2_EDGE_IS_POSITIVE_MASK 0x04000000 | |
106 | #define PVR2_D_PLB_MASK 0x02000000 /* new */ | |
107 | #define PVR2_I_PLB_MASK 0x01000000 /* new */ | |
108 | #define PVR2_INTERCONNECT 0x00800000 /* new */ | |
109 | #define PVR2_USE_EXTEND_FSL 0x00080000 /* new */ | |
110 | #define PVR2_USE_FSL_EXC 0x00040000 /* new */ | |
111 | #define PVR2_USE_MSR_INSTR 0x00020000 | |
112 | #define PVR2_USE_PCMP_INSTR 0x00010000 | |
113 | #define PVR2_AREA_OPTIMISED 0x00008000 | |
114 | #define PVR2_USE_BARREL_MASK 0x00004000 | |
115 | #define PVR2_USE_DIV_MASK 0x00002000 | |
116 | #define PVR2_USE_HW_MUL_MASK 0x00001000 | |
117 | #define PVR2_USE_FPU_MASK 0x00000800 | |
118 | #define PVR2_USE_MUL64_MASK 0x00000400 | |
119 | #define PVR2_USE_FPU2_MASK 0x00000200 /* new */ | |
120 | #define PVR2_USE_IPLBEXC 0x00000100 | |
121 | #define PVR2_USE_DPLBEXC 0x00000080 | |
122 | #define PVR2_OPCODE_0x0_ILL_MASK 0x00000040 | |
123 | #define PVR2_UNALIGNED_EXC_MASK 0x00000020 | |
124 | #define PVR2_ILL_OPCODE_EXC_MASK 0x00000010 | |
125 | #define PVR2_IOPB_BUS_EXC_MASK 0x00000008 | |
126 | #define PVR2_DOPB_BUS_EXC_MASK 0x00000004 | |
127 | #define PVR2_DIV_ZERO_EXC_MASK 0x00000002 | |
128 | #define PVR2_FPU_EXC_MASK 0x00000001 | |
129 | ||
130 | /* Debug and exception PVR masks */ | |
131 | #define PVR3_DEBUG_ENABLED_MASK 0x80000000 | |
132 | #define PVR3_NUMBER_OF_PC_BRK_MASK 0x1E000000 | |
133 | #define PVR3_NUMBER_OF_RD_ADDR_BRK_MASK 0x00380000 | |
134 | #define PVR3_NUMBER_OF_WR_ADDR_BRK_MASK 0x0000E000 | |
135 | #define PVR3_FSL_LINKS_MASK 0x00000380 | |
136 | ||
137 | /* ICache config PVR masks */ | |
138 | #define PVR4_USE_ICACHE_MASK 0x80000000 | |
139 | #define PVR4_ICACHE_ADDR_TAG_BITS_MASK 0x7C000000 | |
140 | #define PVR4_ICACHE_USE_FSL_MASK 0x02000000 | |
141 | #define PVR4_ICACHE_ALLOW_WR_MASK 0x01000000 | |
142 | #define PVR4_ICACHE_LINE_LEN_MASK 0x00E00000 | |
143 | #define PVR4_ICACHE_BYTE_SIZE_MASK 0x001F0000 | |
144 | ||
145 | /* DCache config PVR masks */ | |
146 | #define PVR5_USE_DCACHE_MASK 0x80000000 | |
147 | #define PVR5_DCACHE_ADDR_TAG_BITS_MASK 0x7C000000 | |
148 | #define PVR5_DCACHE_USE_FSL_MASK 0x02000000 | |
149 | #define PVR5_DCACHE_ALLOW_WR_MASK 0x01000000 | |
150 | #define PVR5_DCACHE_LINE_LEN_MASK 0x00E00000 | |
151 | #define PVR5_DCACHE_BYTE_SIZE_MASK 0x001F0000 | |
152 | ||
153 | /* ICache base address PVR mask */ | |
154 | #define PVR6_ICACHE_BASEADDR_MASK 0xFFFFFFFF | |
155 | ||
156 | /* ICache high address PVR mask */ | |
157 | #define PVR7_ICACHE_HIGHADDR_MASK 0xFFFFFFFF | |
158 | ||
159 | /* DCache base address PVR mask */ | |
160 | #define PVR8_DCACHE_BASEADDR_MASK 0xFFFFFFFF | |
161 | ||
162 | /* DCache high address PVR mask */ | |
163 | #define PVR9_DCACHE_HIGHADDR_MASK 0xFFFFFFFF | |
164 | ||
165 | /* Target family PVR mask */ | |
166 | #define PVR10_TARGET_FAMILY_MASK 0xFF000000 | |
167 | ||
168 | /* MMU descrtiption */ | |
169 | #define PVR11_USE_MMU 0xC0000000 | |
170 | #define PVR11_MMU_ITLB_SIZE 0x38000000 | |
171 | #define PVR11_MMU_DTLB_SIZE 0x07000000 | |
172 | #define PVR11_MMU_TLB_ACCESS 0x00C00000 | |
173 | #define PVR11_MMU_ZONES 0x003C0000 | |
174 | /* MSR Reset value PVR mask */ | |
175 | #define PVR11_MSR_RESET_VALUE_MASK 0x000007FF | |
176 | ||
177 | ||
178 | ||
179 | /* CPU flags. */ | |
180 | ||
181 | /* Condition codes. */ | |
182 | #define CC_GE 5 | |
183 | #define CC_GT 4 | |
184 | #define CC_LE 3 | |
185 | #define CC_LT 2 | |
186 | #define CC_NE 1 | |
187 | #define CC_EQ 0 | |
188 | ||
189 | #define NB_MMU_MODES 3 | |
190 | typedef struct CPUMBState { | |
191 | uint32_t debug; | |
192 | uint32_t btaken; | |
193 | uint32_t btarget; | |
194 | uint32_t bimm; | |
195 | ||
196 | uint32_t imm; | |
197 | uint32_t regs[33]; | |
198 | uint32_t sregs[24]; | |
199 | ||
200 | /* Internal flags. */ | |
201 | #define IMM_FLAG 4 | |
202 | #define DRTI_FLAG (1 << 16) | |
203 | #define DRTE_FLAG (1 << 17) | |
204 | #define DRTB_FLAG (1 << 18) | |
205 | #define D_FLAG (1 << 19) /* Bit in ESR. */ | |
206 | /* TB dependant CPUState. */ | |
207 | #define IFLAGS_TB_MASK (D_FLAG | IMM_FLAG | DRTI_FLAG | DRTE_FLAG | DRTB_FLAG) | |
208 | uint32_t iflags; | |
209 | ||
210 | struct { | |
211 | uint32_t regs[16]; | |
212 | } pvr; | |
213 | ||
214 | #if !defined(CONFIG_USER_ONLY) | |
215 | /* Unified MMU. */ | |
216 | struct microblaze_mmu mmu; | |
217 | #endif | |
218 | ||
219 | CPU_COMMON | |
220 | } CPUMBState; | |
221 | ||
222 | CPUState *cpu_mb_init(const char *cpu_model); | |
223 | int cpu_mb_exec(CPUState *s); | |
224 | void cpu_mb_close(CPUState *s); | |
225 | void do_interrupt(CPUState *env); | |
226 | /* you can call this signal handler from your SIGBUS and SIGSEGV | |
227 | signal handlers to inform the virtual CPU of exceptions. non zero | |
228 | is returned if the signal was handled by the virtual CPU. */ | |
229 | int cpu_mb_signal_handler(int host_signum, void *pinfo, | |
230 | void *puc); | |
231 | ||
232 | enum { | |
233 | CC_OP_DYNAMIC, /* Use env->cc_op */ | |
234 | CC_OP_FLAGS, | |
235 | CC_OP_CMP, | |
236 | }; | |
237 | ||
238 | /* FIXME: MB uses variable pages down to 1K but linux only uses 4k. */ | |
239 | #define TARGET_PAGE_BITS 12 | |
240 | #define MMAP_SHIFT TARGET_PAGE_BITS | |
241 | ||
242 | #define cpu_init cpu_mb_init | |
243 | #define cpu_exec cpu_mb_exec | |
244 | #define cpu_gen_code cpu_mb_gen_code | |
245 | #define cpu_signal_handler cpu_mb_signal_handler | |
246 | ||
247 | #define CPU_SAVE_VERSION 1 | |
248 | ||
249 | /* MMU modes definitions */ | |
250 | #define MMU_MODE0_SUFFIX _nommu | |
251 | #define MMU_MODE1_SUFFIX _kernel | |
252 | #define MMU_MODE2_SUFFIX _user | |
253 | #define MMU_NOMMU_IDX 0 | |
254 | #define MMU_KERNEL_IDX 1 | |
255 | #define MMU_USER_IDX 2 | |
256 | /* See NB_MMU_MODES further up the file. */ | |
257 | ||
258 | static inline int cpu_mmu_index (CPUState *env) | |
259 | { | |
260 | /* Are we in nommu mode?. */ | |
261 | if (!(env->sregs[SR_MSR] & MSR_VM)) | |
262 | return MMU_NOMMU_IDX; | |
263 | ||
264 | if (env->sregs[SR_MSR] & MSR_UM) | |
265 | return MMU_USER_IDX; | |
266 | return MMU_KERNEL_IDX; | |
267 | } | |
268 | ||
269 | int cpu_mb_handle_mmu_fault(CPUState *env, target_ulong address, int rw, | |
270 | int mmu_idx, int is_softmmu); | |
271 | ||
272 | #if defined(CONFIG_USER_ONLY) | |
273 | static inline void cpu_clone_regs(CPUState *env, target_ulong newsp) | |
274 | { | |
275 | if (newsp) | |
276 | env->regs[R_SP] = newsp; | |
277 | env->regs[3] = 0; | |
278 | } | |
279 | #endif | |
280 | ||
281 | static inline void cpu_set_tls(CPUState *env, target_ulong newtls) | |
282 | { | |
283 | } | |
284 | ||
285 | static inline int cpu_interrupts_enabled(CPUState *env) | |
286 | { | |
287 | return env->sregs[SR_MSR] & MSR_IE; | |
288 | } | |
289 | ||
290 | #include "cpu-all.h" | |
291 | #include "exec-all.h" | |
292 | ||
293 | static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb) | |
294 | { | |
295 | env->sregs[SR_PC] = tb->pc; | |
296 | } | |
297 | ||
298 | static inline target_ulong cpu_get_pc(CPUState *env) | |
299 | { | |
300 | return env->sregs[SR_PC]; | |
301 | } | |
302 | ||
303 | static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc, | |
304 | target_ulong *cs_base, int *flags) | |
305 | { | |
306 | *pc = env->sregs[SR_PC]; | |
307 | *cs_base = 0; | |
308 | *flags = env->iflags & IFLAGS_TB_MASK; | |
309 | } | |
310 | #endif |