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dc5bd18f MC |
1 | /* |
2 | * QEMU RISC-V CPU | |
3 | * | |
4 | * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu | |
5 | * Copyright (c) 2017-2018 SiFive, Inc. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms and conditions of the GNU General Public License, | |
9 | * version 2 or later, as published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope it will be useful, but WITHOUT | |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along with | |
17 | * this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #ifndef RISCV_CPU_H | |
21 | #define RISCV_CPU_H | |
22 | ||
2e5b09fd | 23 | #include "hw/core/cpu.h" |
2b7168fc | 24 | #include "hw/registerfields.h" |
dc5bd18f | 25 | #include "exec/cpu-defs.h" |
135b03cb | 26 | #include "fpu/softfloat-types.h" |
db1015e9 | 27 | #include "qom/object.h" |
e91a7227 | 28 | #include "cpu_bits.h" |
dc5bd18f | 29 | |
74433bf0 RH |
30 | #define TCG_GUEST_DEFAULT_MO 0 |
31 | ||
dc5bd18f MC |
32 | #define TYPE_RISCV_CPU "riscv-cpu" |
33 | ||
34 | #define RISCV_CPU_TYPE_SUFFIX "-" TYPE_RISCV_CPU | |
35 | #define RISCV_CPU_TYPE_NAME(name) (name RISCV_CPU_TYPE_SUFFIX) | |
0dacec87 | 36 | #define CPU_RESOLVING_TYPE TYPE_RISCV_CPU |
dc5bd18f MC |
37 | |
38 | #define TYPE_RISCV_CPU_ANY RISCV_CPU_TYPE_NAME("any") | |
8903bf6e AF |
39 | #define TYPE_RISCV_CPU_BASE32 RISCV_CPU_TYPE_NAME("rv32") |
40 | #define TYPE_RISCV_CPU_BASE64 RISCV_CPU_TYPE_NAME("rv64") | |
36b80ad9 | 41 | #define TYPE_RISCV_CPU_IBEX RISCV_CPU_TYPE_NAME("lowrisc-ibex") |
6ddc7069 | 42 | #define TYPE_RISCV_CPU_SHAKTI_C RISCV_CPU_TYPE_NAME("shakti-c") |
dc5bd18f | 43 | #define TYPE_RISCV_CPU_SIFIVE_E31 RISCV_CPU_TYPE_NAME("sifive-e31") |
d784733b | 44 | #define TYPE_RISCV_CPU_SIFIVE_E34 RISCV_CPU_TYPE_NAME("sifive-e34") |
dc5bd18f MC |
45 | #define TYPE_RISCV_CPU_SIFIVE_E51 RISCV_CPU_TYPE_NAME("sifive-e51") |
46 | #define TYPE_RISCV_CPU_SIFIVE_U34 RISCV_CPU_TYPE_NAME("sifive-u34") | |
47 | #define TYPE_RISCV_CPU_SIFIVE_U54 RISCV_CPU_TYPE_NAME("sifive-u54") | |
48 | ||
c0a635f3 AF |
49 | #if defined(TARGET_RISCV32) |
50 | # define TYPE_RISCV_CPU_BASE TYPE_RISCV_CPU_BASE32 | |
51 | #elif defined(TARGET_RISCV64) | |
52 | # define TYPE_RISCV_CPU_BASE TYPE_RISCV_CPU_BASE64 | |
53 | #endif | |
54 | ||
dc5bd18f MC |
55 | #define RV(x) ((target_ulong)1 << (x - 'A')) |
56 | ||
57 | #define RVI RV('I') | |
79f86934 | 58 | #define RVE RV('E') /* E and I are mutually exclusive */ |
dc5bd18f MC |
59 | #define RVM RV('M') |
60 | #define RVA RV('A') | |
61 | #define RVF RV('F') | |
62 | #define RVD RV('D') | |
ad9e5aa2 | 63 | #define RVV RV('V') |
dc5bd18f MC |
64 | #define RVC RV('C') |
65 | #define RVS RV('S') | |
66 | #define RVU RV('U') | |
af1fa003 | 67 | #define RVH RV('H') |
53dcea58 | 68 | #define RVJ RV('J') |
dc5bd18f MC |
69 | |
70 | /* S extension denotes that Supervisor mode exists, however it is possible | |
71 | to have a core that support S mode but does not have an MMU and there | |
72 | is currently no bit in misa to indicate whether an MMU exists or not | |
a88365c1 | 73 | so a cpu features bitfield is required, likewise for optional PMP support */ |
dc5bd18f | 74 | enum { |
a88365c1 | 75 | RISCV_FEATURE_MMU, |
f18637cd | 76 | RISCV_FEATURE_PMP, |
4a345b2a | 77 | RISCV_FEATURE_EPMP, |
f18637cd | 78 | RISCV_FEATURE_MISA |
dc5bd18f MC |
79 | }; |
80 | ||
dc5bd18f | 81 | #define PRIV_VERSION_1_10_0 0x00011000 |
6729dbbd | 82 | #define PRIV_VERSION_1_11_0 0x00011100 |
dc5bd18f | 83 | |
32931383 LZ |
84 | #define VEXT_VERSION_0_07_1 0x00000701 |
85 | ||
33a9a57d YJ |
86 | enum { |
87 | TRANSLATE_SUCCESS, | |
88 | TRANSLATE_FAIL, | |
89 | TRANSLATE_PMP_FAIL, | |
90 | TRANSLATE_G_STAGE_FAIL | |
91 | }; | |
92 | ||
dc5bd18f MC |
93 | #define MMU_USER_IDX 3 |
94 | ||
95 | #define MAX_RISCV_PMPS (16) | |
96 | ||
97 | typedef struct CPURISCVState CPURISCVState; | |
98 | ||
bbf3d1b4 | 99 | #if !defined(CONFIG_USER_ONLY) |
dc5bd18f | 100 | #include "pmp.h" |
bbf3d1b4 | 101 | #endif |
dc5bd18f | 102 | |
6bf91617 | 103 | #define RV_VLEN_MAX 256 |
ad9e5aa2 | 104 | |
2b7168fc LZ |
105 | FIELD(VTYPE, VLMUL, 0, 2) |
106 | FIELD(VTYPE, VSEW, 2, 3) | |
107 | FIELD(VTYPE, VEDIV, 5, 2) | |
108 | FIELD(VTYPE, RESERVED, 7, sizeof(target_ulong) * 8 - 9) | |
fbcbafa2 | 109 | FIELD(VTYPE, VILL, sizeof(target_ulong) * 8 - 1, 1) |
2b7168fc | 110 | |
dc5bd18f MC |
111 | struct CPURISCVState { |
112 | target_ulong gpr[32]; | |
113 | uint64_t fpr[32]; /* assume both F and D extensions */ | |
ad9e5aa2 LZ |
114 | |
115 | /* vector coprocessor state. */ | |
116 | uint64_t vreg[32 * RV_VLEN_MAX / 64] QEMU_ALIGNED(16); | |
117 | target_ulong vxrm; | |
118 | target_ulong vxsat; | |
119 | target_ulong vl; | |
120 | target_ulong vstart; | |
121 | target_ulong vtype; | |
122 | ||
dc5bd18f MC |
123 | target_ulong pc; |
124 | target_ulong load_res; | |
125 | target_ulong load_val; | |
126 | ||
127 | target_ulong frm; | |
128 | ||
129 | target_ulong badaddr; | |
36a18664 | 130 | target_ulong guest_phys_fault_addr; |
dc5bd18f | 131 | |
dc5bd18f | 132 | target_ulong priv_ver; |
d2c1a177 | 133 | target_ulong bext_ver; |
32931383 | 134 | target_ulong vext_ver; |
e91a7227 RH |
135 | |
136 | /* RISCVMXL, but uint32_t for vmstate migration */ | |
137 | uint32_t misa_mxl; /* current mxl */ | |
138 | uint32_t misa_mxl_max; /* max mxl for this cpu */ | |
139 | uint32_t misa_ext; /* current extensions */ | |
140 | uint32_t misa_ext_mask; /* max ext for this cpu */ | |
dc5bd18f MC |
141 | |
142 | uint32_t features; | |
143 | ||
5836c3ec KC |
144 | #ifdef CONFIG_USER_ONLY |
145 | uint32_t elf_flags; | |
146 | #endif | |
147 | ||
dc5bd18f MC |
148 | #ifndef CONFIG_USER_ONLY |
149 | target_ulong priv; | |
ef6bb7b6 AF |
150 | /* This contains QEMU specific information about the virt state. */ |
151 | target_ulong virt; | |
dc5bd18f MC |
152 | target_ulong resetvec; |
153 | ||
154 | target_ulong mhartid; | |
284d697c YJ |
155 | /* |
156 | * For RV32 this is 32-bit mstatus and 32-bit mstatush. | |
157 | * For RV64 this is a 64-bit mstatus. | |
158 | */ | |
159 | uint64_t mstatus; | |
85ba724f | 160 | |
02861613 | 161 | target_ulong mip; |
66e594f2 | 162 | |
e3e7039c | 163 | uint32_t miclaim; |
85ba724f | 164 | |
dc5bd18f MC |
165 | target_ulong mie; |
166 | target_ulong mideleg; | |
167 | ||
dc5bd18f | 168 | target_ulong satp; /* since: priv-1.10.0 */ |
ac12b601 | 169 | target_ulong stval; |
dc5bd18f MC |
170 | target_ulong medeleg; |
171 | ||
172 | target_ulong stvec; | |
173 | target_ulong sepc; | |
174 | target_ulong scause; | |
175 | ||
176 | target_ulong mtvec; | |
177 | target_ulong mepc; | |
178 | target_ulong mcause; | |
179 | target_ulong mtval; /* since: priv-1.10.0 */ | |
180 | ||
bd023ce3 AF |
181 | /* Hypervisor CSRs */ |
182 | target_ulong hstatus; | |
183 | target_ulong hedeleg; | |
184 | target_ulong hideleg; | |
185 | target_ulong hcounteren; | |
186 | target_ulong htval; | |
187 | target_ulong htinst; | |
188 | target_ulong hgatp; | |
c6957248 | 189 | uint64_t htimedelta; |
bd023ce3 AF |
190 | |
191 | /* Virtual CSRs */ | |
284d697c YJ |
192 | /* |
193 | * For RV32 this is 32-bit vsstatus and 32-bit vsstatush. | |
194 | * For RV64 this is a 64-bit vsstatus. | |
195 | */ | |
196 | uint64_t vsstatus; | |
bd023ce3 AF |
197 | target_ulong vstvec; |
198 | target_ulong vsscratch; | |
199 | target_ulong vsepc; | |
200 | target_ulong vscause; | |
201 | target_ulong vstval; | |
202 | target_ulong vsatp; | |
203 | ||
204 | target_ulong mtval2; | |
205 | target_ulong mtinst; | |
206 | ||
66e594f2 AF |
207 | /* HS Backup CSRs */ |
208 | target_ulong stvec_hs; | |
209 | target_ulong sscratch_hs; | |
210 | target_ulong sepc_hs; | |
211 | target_ulong scause_hs; | |
212 | target_ulong stval_hs; | |
213 | target_ulong satp_hs; | |
284d697c | 214 | uint64_t mstatus_hs; |
66e594f2 | 215 | |
ec352d0c GK |
216 | /* Signals whether the current exception occurred with two-stage address |
217 | translation active. */ | |
218 | bool two_stage_lookup; | |
219 | ||
8c59f5c1 MC |
220 | target_ulong scounteren; |
221 | target_ulong mcounteren; | |
dc5bd18f MC |
222 | |
223 | target_ulong sscratch; | |
224 | target_ulong mscratch; | |
225 | ||
226 | /* temporary htif regs */ | |
227 | uint64_t mfromhost; | |
228 | uint64_t mtohost; | |
229 | uint64_t timecmp; | |
230 | ||
231 | /* physical memory protection */ | |
232 | pmp_table_t pmp_state; | |
2582a95c | 233 | target_ulong mseccfg; |
753e3fe2 | 234 | |
c6957248 | 235 | /* machine specific rdtime callback */ |
a47ef6e9 BM |
236 | uint64_t (*rdtime_fn)(uint32_t); |
237 | uint32_t rdtime_fn_arg; | |
c6957248 | 238 | |
753e3fe2 JW |
239 | /* True if in debugger mode. */ |
240 | bool debugger; | |
4bbe8033 AB |
241 | |
242 | /* | |
243 | * CSRs for PointerMasking extension | |
244 | */ | |
245 | target_ulong mmte; | |
246 | target_ulong mpmmask; | |
247 | target_ulong mpmbase; | |
248 | target_ulong spmmask; | |
249 | target_ulong spmbase; | |
250 | target_ulong upmmask; | |
251 | target_ulong upmbase; | |
dc5bd18f MC |
252 | #endif |
253 | ||
254 | float_status fp_status; | |
255 | ||
dc5bd18f MC |
256 | /* Fields from here on are preserved across CPU reset. */ |
257 | QEMUTimer *timer; /* Internal timer */ | |
258 | }; | |
259 | ||
c821774a | 260 | OBJECT_DECLARE_TYPE(RISCVCPU, RISCVCPUClass, |
30b5707c | 261 | RISCV_CPU) |
dc5bd18f MC |
262 | |
263 | /** | |
264 | * RISCVCPUClass: | |
265 | * @parent_realize: The parent class' realize handler. | |
266 | * @parent_reset: The parent class' reset handler. | |
267 | * | |
268 | * A RISCV CPU model. | |
269 | */ | |
db1015e9 | 270 | struct RISCVCPUClass { |
dc5bd18f MC |
271 | /*< private >*/ |
272 | CPUClass parent_class; | |
273 | /*< public >*/ | |
274 | DeviceRealize parent_realize; | |
781c67ca | 275 | DeviceReset parent_reset; |
db1015e9 | 276 | }; |
dc5bd18f MC |
277 | |
278 | /** | |
279 | * RISCVCPU: | |
280 | * @env: #CPURISCVState | |
281 | * | |
282 | * A RISCV CPU. | |
283 | */ | |
db1015e9 | 284 | struct RISCVCPU { |
dc5bd18f MC |
285 | /*< private >*/ |
286 | CPUState parent_obj; | |
287 | /*< public >*/ | |
5b146dc7 | 288 | CPUNegativeOffsetState neg; |
dc5bd18f | 289 | CPURISCVState env; |
c4e95030 | 290 | |
b93777e1 BM |
291 | char *dyn_csr_xml; |
292 | ||
c4e95030 AF |
293 | /* Configuration Settings */ |
294 | struct { | |
b55d7d34 AF |
295 | bool ext_i; |
296 | bool ext_e; | |
297 | bool ext_g; | |
298 | bool ext_m; | |
299 | bool ext_a; | |
300 | bool ext_f; | |
301 | bool ext_d; | |
302 | bool ext_c; | |
303 | bool ext_s; | |
304 | bool ext_u; | |
c9eefe05 | 305 | bool ext_h; |
53dcea58 | 306 | bool ext_j; |
6bf91617 | 307 | bool ext_v; |
878dd0e9 PT |
308 | bool ext_zba; |
309 | bool ext_zbb; | |
310 | bool ext_zbc; | |
311 | bool ext_zbs; | |
0a13a5b8 | 312 | bool ext_counters; |
50fba816 | 313 | bool ext_ifencei; |
591bddea | 314 | bool ext_icsr; |
915f77b2 | 315 | bool ext_zfh; |
b55d7d34 | 316 | |
c4e95030 AF |
317 | char *priv_spec; |
318 | char *user_spec; | |
d2c1a177 | 319 | char *bext_spec; |
6bf91617 | 320 | char *vext_spec; |
32931383 LZ |
321 | uint16_t vlen; |
322 | uint16_t elen; | |
c4e95030 AF |
323 | bool mmu; |
324 | bool pmp; | |
5da9514e | 325 | bool epmp; |
9b4c9b2b | 326 | uint64_t resetvec; |
c4e95030 | 327 | } cfg; |
db1015e9 | 328 | }; |
dc5bd18f | 329 | |
dc5bd18f MC |
330 | static inline int riscv_has_ext(CPURISCVState *env, target_ulong ext) |
331 | { | |
e91a7227 | 332 | return (env->misa_ext & ext) != 0; |
dc5bd18f MC |
333 | } |
334 | ||
335 | static inline bool riscv_feature(CPURISCVState *env, int feature) | |
336 | { | |
337 | return env->features & (1ULL << feature); | |
338 | } | |
339 | ||
340 | #include "cpu_user.h" | |
dc5bd18f MC |
341 | |
342 | extern const char * const riscv_int_regnames[]; | |
343 | extern const char * const riscv_fpr_regnames[]; | |
dc5bd18f | 344 | |
c51a3f5d | 345 | const char *riscv_cpu_get_trap_name(target_ulong cause, bool async); |
dc5bd18f | 346 | void riscv_cpu_do_interrupt(CPUState *cpu); |
43a96588 YJ |
347 | int riscv_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs, |
348 | int cpuid, void *opaque); | |
349 | int riscv_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs, | |
350 | int cpuid, void *opaque); | |
a010bdbe | 351 | int riscv_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg); |
dc5bd18f | 352 | int riscv_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); |
b345b480 | 353 | bool riscv_cpu_fp_enabled(CPURISCVState *env); |
ef6bb7b6 AF |
354 | bool riscv_cpu_virt_enabled(CPURISCVState *env); |
355 | void riscv_cpu_set_virt_enabled(CPURISCVState *env, bool enable); | |
1c1c060a | 356 | bool riscv_cpu_two_stage_lookup(int mmu_idx); |
dc5bd18f MC |
357 | int riscv_cpu_mmu_index(CPURISCVState *env, bool ifetch); |
358 | hwaddr riscv_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr); | |
359 | void riscv_cpu_do_unaligned_access(CPUState *cs, vaddr addr, | |
360 | MMUAccessType access_type, int mmu_idx, | |
fa947a66 | 361 | uintptr_t retaddr) QEMU_NORETURN; |
8a4ca3c1 RH |
362 | bool riscv_cpu_tlb_fill(CPUState *cs, vaddr address, int size, |
363 | MMUAccessType access_type, int mmu_idx, | |
364 | bool probe, uintptr_t retaddr); | |
37207e12 PD |
365 | void riscv_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr, |
366 | vaddr addr, unsigned size, | |
367 | MMUAccessType access_type, | |
368 | int mmu_idx, MemTxAttrs attrs, | |
369 | MemTxResult response, uintptr_t retaddr); | |
dc5bd18f | 370 | char *riscv_isa_string(RISCVCPU *cpu); |
0442428a | 371 | void riscv_cpu_list(void); |
dc5bd18f | 372 | |
dc5bd18f MC |
373 | #define cpu_list riscv_cpu_list |
374 | #define cpu_mmu_index riscv_cpu_mmu_index | |
375 | ||
85ba724f | 376 | #ifndef CONFIG_USER_ONLY |
17b3c353 | 377 | bool riscv_cpu_exec_interrupt(CPUState *cs, int interrupt_request); |
66e594f2 | 378 | void riscv_cpu_swap_hypervisor_regs(CPURISCVState *env); |
e3e7039c | 379 | int riscv_cpu_claim_interrupts(RISCVCPU *cpu, uint32_t interrupts); |
85ba724f MC |
380 | uint32_t riscv_cpu_update_mip(RISCVCPU *cpu, uint32_t mask, uint32_t value); |
381 | #define BOOL_TO_MASK(x) (-!!(x)) /* helper for riscv_cpu_update_mip value */ | |
a47ef6e9 BM |
382 | void riscv_cpu_set_rdtime_fn(CPURISCVState *env, uint64_t (*fn)(uint32_t), |
383 | uint32_t arg); | |
85ba724f | 384 | #endif |
fb738839 | 385 | void riscv_cpu_set_mode(CPURISCVState *env, target_ulong newpriv); |
dc5bd18f MC |
386 | |
387 | void riscv_translate_init(void); | |
fb738839 MC |
388 | void QEMU_NORETURN riscv_raise_exception(CPURISCVState *env, |
389 | uint32_t exception, uintptr_t pc); | |
dc5bd18f | 390 | |
fb738839 MC |
391 | target_ulong riscv_cpu_get_fflags(CPURISCVState *env); |
392 | void riscv_cpu_set_fflags(CPURISCVState *env, target_ulong); | |
dc5bd18f | 393 | |
c445593d AF |
394 | #define TB_FLAGS_PRIV_MMU_MASK 3 |
395 | #define TB_FLAGS_PRIV_HYP_ACCESS_MASK (1 << 2) | |
83a71719 | 396 | #define TB_FLAGS_MSTATUS_FS MSTATUS_FS |
dc5bd18f | 397 | |
2b7168fc LZ |
398 | typedef CPURISCVState CPUArchState; |
399 | typedef RISCVCPU ArchCPU; | |
400 | #include "exec/cpu-all.h" | |
401 | ||
61d56494 FC |
402 | FIELD(TB_FLAGS, MEM_IDX, 0, 3) |
403 | FIELD(TB_FLAGS, VL_EQ_VLMAX, 3, 1) | |
404 | FIELD(TB_FLAGS, LMUL, 4, 2) | |
405 | FIELD(TB_FLAGS, SEW, 6, 3) | |
406 | FIELD(TB_FLAGS, VILL, 9, 1) | |
743077b3 | 407 | /* Is a Hypervisor instruction load/store allowed? */ |
61d56494 FC |
408 | FIELD(TB_FLAGS, HLSX, 10, 1) |
409 | FIELD(TB_FLAGS, MSTATUS_HS_FS, 11, 2) | |
92371bd9 RH |
410 | /* The combination of MXL/SXL/UXL that applies to the current cpu mode. */ |
411 | FIELD(TB_FLAGS, XL, 13, 2) | |
0774a7a1 AP |
412 | /* If PointerMasking should be applied */ |
413 | FIELD(TB_FLAGS, PM_ENABLED, 15, 1) | |
2b7168fc | 414 | |
db23e5d9 RH |
415 | #ifdef TARGET_RISCV32 |
416 | #define riscv_cpu_mxl(env) ((void)(env), MXL_RV32) | |
417 | #else | |
418 | static inline RISCVMXL riscv_cpu_mxl(CPURISCVState *env) | |
419 | { | |
420 | return env->misa_mxl; | |
421 | } | |
422 | #endif | |
51ae0cab | 423 | |
2b7168fc LZ |
424 | /* |
425 | * A simplification for VLMAX | |
426 | * = (1 << LMUL) * VLEN / (8 * (1 << SEW)) | |
427 | * = (VLEN << LMUL) / (8 << SEW) | |
428 | * = (VLEN << LMUL) >> (SEW + 3) | |
429 | * = VLEN >> (SEW + 3 - LMUL) | |
430 | */ | |
431 | static inline uint32_t vext_get_vlmax(RISCVCPU *cpu, target_ulong vtype) | |
432 | { | |
433 | uint8_t sew, lmul; | |
434 | ||
435 | sew = FIELD_EX64(vtype, VTYPE, VSEW); | |
436 | lmul = FIELD_EX64(vtype, VTYPE, VLMUL); | |
437 | return cpu->cfg.vlen >> (sew + 3 - lmul); | |
438 | } | |
439 | ||
53677acf RH |
440 | void cpu_get_tb_cpu_state(CPURISCVState *env, target_ulong *pc, |
441 | target_ulong *cs_base, uint32_t *pflags); | |
dc5bd18f | 442 | |
533c91e8 AF |
443 | RISCVException riscv_csrrw(CPURISCVState *env, int csrno, |
444 | target_ulong *ret_value, | |
445 | target_ulong new_value, target_ulong write_mask); | |
446 | RISCVException riscv_csrrw_debug(CPURISCVState *env, int csrno, | |
447 | target_ulong *ret_value, | |
448 | target_ulong new_value, | |
449 | target_ulong write_mask); | |
c7b95171 | 450 | |
fb738839 MC |
451 | static inline void riscv_csr_write(CPURISCVState *env, int csrno, |
452 | target_ulong val) | |
c7b95171 MC |
453 | { |
454 | riscv_csrrw(env, csrno, NULL, val, MAKE_64BIT_MASK(0, TARGET_LONG_BITS)); | |
455 | } | |
456 | ||
fb738839 | 457 | static inline target_ulong riscv_csr_read(CPURISCVState *env, int csrno) |
c7b95171 MC |
458 | { |
459 | target_ulong val = 0; | |
460 | riscv_csrrw(env, csrno, &val, 0, 0); | |
461 | return val; | |
462 | } | |
463 | ||
0e62f92e AF |
464 | typedef RISCVException (*riscv_csr_predicate_fn)(CPURISCVState *env, |
465 | int csrno); | |
605def6e AF |
466 | typedef RISCVException (*riscv_csr_read_fn)(CPURISCVState *env, int csrno, |
467 | target_ulong *ret_value); | |
468 | typedef RISCVException (*riscv_csr_write_fn)(CPURISCVState *env, int csrno, | |
469 | target_ulong new_value); | |
470 | typedef RISCVException (*riscv_csr_op_fn)(CPURISCVState *env, int csrno, | |
471 | target_ulong *ret_value, | |
472 | target_ulong new_value, | |
473 | target_ulong write_mask); | |
c7b95171 MC |
474 | |
475 | typedef struct { | |
8ceac5dc | 476 | const char *name; |
a88365c1 | 477 | riscv_csr_predicate_fn predicate; |
c7b95171 MC |
478 | riscv_csr_read_fn read; |
479 | riscv_csr_write_fn write; | |
480 | riscv_csr_op_fn op; | |
481 | } riscv_csr_operations; | |
482 | ||
56118ee8 BM |
483 | /* CSR function table constants */ |
484 | enum { | |
485 | CSR_TABLE_SIZE = 0x1000 | |
486 | }; | |
487 | ||
488 | /* CSR function table */ | |
6f03770d | 489 | extern riscv_csr_operations csr_ops[CSR_TABLE_SIZE]; |
56118ee8 | 490 | |
c7b95171 MC |
491 | void riscv_get_csr_ops(int csrno, riscv_csr_operations *ops); |
492 | void riscv_set_csr_ops(int csrno, riscv_csr_operations *ops); | |
dc5bd18f | 493 | |
5371f5cd JW |
494 | void riscv_cpu_register_gdb_regs_for_features(CPUState *cs); |
495 | ||
dc5bd18f | 496 | #endif /* RISCV_CPU_H */ |