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61766fe9 RH |
1 | /* |
2 | * PA-RISC emulation cpu definitions for qemu. | |
3 | * | |
4 | * Copyright (c) 2016 Richard Henderson <rth@twiddle.net> | |
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 | |
d6ea4236 | 9 | * version 2.1 of the License, or (at your option) any later version. |
61766fe9 RH |
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 | |
17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #ifndef HPPA_CPU_H | |
21 | #define HPPA_CPU_H | |
22 | ||
61766fe9 | 23 | #include "cpu-qom.h" |
74433bf0 | 24 | #include "exec/cpu-defs.h" |
69242e7e | 25 | #include "qemu/cpu-float.h" |
66866cc7 | 26 | #include "qemu/interval-tree.h" |
61766fe9 | 27 | |
7b93dab5 RH |
28 | /* PA-RISC 1.x processors have a strong memory model. */ |
29 | /* ??? While we do not yet implement PA-RISC 2.0, those processors have | |
30 | a weak memory model, but with TLB bits that force ordering on a per-page | |
31 | basis. It's probably easier to fall back to a strong memory model. */ | |
32 | #define TCG_GUEST_DEFAULT_MO TCG_MO_ALL | |
33 | ||
bb67ec32 RH |
34 | #define MMU_KERNEL_IDX 7 |
35 | #define MMU_KERNEL_P_IDX 8 | |
36 | #define MMU_PL1_IDX 9 | |
37 | #define MMU_PL1_P_IDX 10 | |
38 | #define MMU_PL2_IDX 11 | |
39 | #define MMU_PL2_P_IDX 12 | |
40 | #define MMU_USER_IDX 13 | |
41 | #define MMU_USER_P_IDX 14 | |
42 | #define MMU_PHYS_IDX 15 | |
43 | ||
44 | #define MMU_IDX_TO_PRIV(MIDX) (((MIDX) - MMU_KERNEL_IDX) / 2) | |
45 | #define MMU_IDX_TO_P(MIDX) (((MIDX) - MMU_KERNEL_IDX) & 1) | |
46 | #define PRIV_P_TO_MMU_IDX(PRIV, P) ((PRIV) * 2 + !!(P) + MMU_KERNEL_IDX) | |
c01e5dfb | 47 | |
61766fe9 RH |
48 | #define TARGET_INSN_START_EXTRA_WORDS 1 |
49 | ||
88b7ad10 HD |
50 | /* No need to flush MMU_PHYS_IDX */ |
51 | #define HPPA_MMU_FLUSH_MASK \ | |
bb67ec32 RH |
52 | (1 << MMU_KERNEL_IDX | 1 << MMU_KERNEL_P_IDX | \ |
53 | 1 << MMU_PL1_IDX | 1 << MMU_PL1_P_IDX | \ | |
54 | 1 << MMU_PL2_IDX | 1 << MMU_PL2_P_IDX | \ | |
55 | 1 << MMU_USER_IDX | 1 << MMU_USER_P_IDX) | |
56 | ||
57 | /* Indicies to flush for access_id changes. */ | |
58 | #define HPPA_MMU_FLUSH_P_MASK \ | |
59 | (1 << MMU_KERNEL_P_IDX | 1 << MMU_PL1_P_IDX | \ | |
60 | 1 << MMU_PL2_P_IDX | 1 << MMU_USER_P_IDX) | |
88b7ad10 | 61 | |
8b81968c | 62 | /* Hardware exceptions, interrupts, faults, and traps. */ |
2986721d RH |
63 | #define EXCP_HPMC 1 /* high priority machine check */ |
64 | #define EXCP_POWER_FAIL 2 | |
65 | #define EXCP_RC 3 /* recovery counter */ | |
66 | #define EXCP_EXT_INTERRUPT 4 /* external interrupt */ | |
67 | #define EXCP_LPMC 5 /* low priority machine check */ | |
68 | #define EXCP_ITLB_MISS 6 /* itlb miss / instruction page fault */ | |
69 | #define EXCP_IMP 7 /* instruction memory protection trap */ | |
70 | #define EXCP_ILL 8 /* illegal instruction trap */ | |
71 | #define EXCP_BREAK 9 /* break instruction */ | |
72 | #define EXCP_PRIV_OPR 10 /* privileged operation trap */ | |
73 | #define EXCP_PRIV_REG 11 /* privileged register trap */ | |
74 | #define EXCP_OVERFLOW 12 /* signed overflow trap */ | |
75 | #define EXCP_COND 13 /* trap-on-condition */ | |
76 | #define EXCP_ASSIST 14 /* assist exception trap */ | |
77 | #define EXCP_DTLB_MISS 15 /* dtlb miss / data page fault */ | |
78 | #define EXCP_NA_ITLB_MISS 16 /* non-access itlb miss */ | |
79 | #define EXCP_NA_DTLB_MISS 17 /* non-access dtlb miss */ | |
80 | #define EXCP_DMP 18 /* data memory protection trap */ | |
81 | #define EXCP_DMB 19 /* data memory break trap */ | |
82 | #define EXCP_TLB_DIRTY 20 /* tlb dirty bit trap */ | |
83 | #define EXCP_PAGE_REF 21 /* page reference trap */ | |
84 | #define EXCP_ASSIST_EMU 22 /* assist emulation trap */ | |
85 | #define EXCP_HPT 23 /* high-privilege transfer trap */ | |
86 | #define EXCP_LPT 24 /* low-privilege transfer trap */ | |
87 | #define EXCP_TB 25 /* taken branch trap */ | |
88 | #define EXCP_DMAR 26 /* data memory access rights trap */ | |
89 | #define EXCP_DMPI 27 /* data memory protection id trap */ | |
90 | #define EXCP_UNALIGN 28 /* unaligned data reference trap */ | |
91 | #define EXCP_PER_INTERRUPT 29 /* performance monitor interrupt */ | |
92 | ||
93 | /* Exceptions for linux-user emulation. */ | |
94 | #define EXCP_SYSCALL 30 | |
95 | #define EXCP_SYSCALL_LWS 31 | |
61766fe9 | 96 | |
4a4554c6 HD |
97 | /* Emulated hardware TOC button */ |
98 | #define EXCP_TOC 32 /* TOC = Transfer of control (NMI) */ | |
99 | ||
100 | #define CPU_INTERRUPT_NMI CPU_INTERRUPT_TGT_EXT_3 /* TOC */ | |
101 | ||
fa57e327 RH |
102 | /* Taken from Linux kernel: arch/parisc/include/asm/psw.h */ |
103 | #define PSW_I 0x00000001 | |
104 | #define PSW_D 0x00000002 | |
105 | #define PSW_P 0x00000004 | |
106 | #define PSW_Q 0x00000008 | |
107 | #define PSW_R 0x00000010 | |
108 | #define PSW_F 0x00000020 | |
109 | #define PSW_G 0x00000040 /* PA1.x only */ | |
110 | #define PSW_O 0x00000080 /* PA2.0 only */ | |
111 | #define PSW_CB 0x0000ff00 | |
112 | #define PSW_M 0x00010000 | |
113 | #define PSW_V 0x00020000 | |
114 | #define PSW_C 0x00040000 | |
115 | #define PSW_B 0x00080000 | |
116 | #define PSW_X 0x00100000 | |
117 | #define PSW_N 0x00200000 | |
118 | #define PSW_L 0x00400000 | |
119 | #define PSW_H 0x00800000 | |
120 | #define PSW_T 0x01000000 | |
121 | #define PSW_S 0x02000000 | |
122 | #define PSW_E 0x04000000 | |
123 | #ifdef TARGET_HPPA64 | |
124 | #define PSW_W 0x08000000 /* PA2.0 only */ | |
125 | #else | |
126 | #define PSW_W 0 | |
127 | #endif | |
128 | #define PSW_Z 0x40000000 /* PA1.x only */ | |
129 | #define PSW_Y 0x80000000 /* PA1.x only */ | |
130 | ||
131 | #define PSW_SM (PSW_W | PSW_E | PSW_O | PSW_G | PSW_F \ | |
132 | | PSW_R | PSW_Q | PSW_P | PSW_D | PSW_I) | |
133 | ||
134 | /* ssm/rsm instructions number PSW_W and PSW_E differently */ | |
135 | #define PSW_SM_I PSW_I /* Enable External Interrupts */ | |
136 | #define PSW_SM_D PSW_D | |
137 | #define PSW_SM_P PSW_P | |
138 | #define PSW_SM_Q PSW_Q /* Enable Interrupt State Collection */ | |
139 | #define PSW_SM_R PSW_R /* Enable Recover Counter Trap */ | |
140 | #ifdef TARGET_HPPA64 | |
141 | #define PSW_SM_E 0x100 | |
142 | #define PSW_SM_W 0x200 /* PA2.0 only : Enable Wide Mode */ | |
143 | #else | |
144 | #define PSW_SM_E 0 | |
145 | #define PSW_SM_W 0 | |
146 | #endif | |
147 | ||
35136a77 | 148 | #define CR_RC 0 |
d5de20bd SS |
149 | #define CR_PID1 8 |
150 | #define CR_PID2 9 | |
151 | #define CR_PID3 12 | |
152 | #define CR_PID4 13 | |
35136a77 RH |
153 | #define CR_SCRCCR 10 |
154 | #define CR_SAR 11 | |
155 | #define CR_IVA 14 | |
156 | #define CR_EIEM 15 | |
157 | #define CR_IT 16 | |
158 | #define CR_IIASQ 17 | |
159 | #define CR_IIAOQ 18 | |
160 | #define CR_IIR 19 | |
161 | #define CR_ISR 20 | |
162 | #define CR_IOR 21 | |
163 | #define CR_IPSW 22 | |
164 | #define CR_EIRR 23 | |
165 | ||
eaa3783b RH |
166 | #if TARGET_REGISTER_BITS == 32 |
167 | typedef uint32_t target_ureg; | |
168 | typedef int32_t target_sreg; | |
169 | #define TREG_FMT_lx "%08"PRIx32 | |
170 | #define TREG_FMT_ld "%"PRId32 | |
171 | #else | |
172 | typedef uint64_t target_ureg; | |
173 | typedef int64_t target_sreg; | |
174 | #define TREG_FMT_lx "%016"PRIx64 | |
175 | #define TREG_FMT_ld "%"PRId64 | |
176 | #endif | |
177 | ||
729cd350 | 178 | typedef struct HPPATLBEntry { |
d7553f35 RH |
179 | union { |
180 | IntervalTreeNode itree; | |
181 | struct HPPATLBEntry *unused_next; | |
182 | }; | |
66866cc7 | 183 | |
650cdb2a | 184 | target_ureg pa; |
f8cda28b RH |
185 | |
186 | unsigned entry_valid : 1; | |
187 | ||
650cdb2a RH |
188 | unsigned u : 1; |
189 | unsigned t : 1; | |
190 | unsigned d : 1; | |
191 | unsigned b : 1; | |
650cdb2a RH |
192 | unsigned ar_type : 3; |
193 | unsigned ar_pl1 : 2; | |
194 | unsigned ar_pl2 : 2; | |
650cdb2a | 195 | unsigned access_id : 16; |
729cd350 | 196 | } HPPATLBEntry; |
650cdb2a | 197 | |
1ea4a06a | 198 | typedef struct CPUArchState { |
f8c0fd98 HD |
199 | target_ureg iaoq_f; /* front */ |
200 | target_ureg iaoq_b; /* back, aka next instruction */ | |
201 | ||
eaa3783b | 202 | target_ureg gr[32]; |
61766fe9 | 203 | uint64_t fr[32]; |
33423472 | 204 | uint64_t sr[8]; /* stored shifted into place for gva */ |
61766fe9 | 205 | |
eaa3783b RH |
206 | target_ureg psw; /* All psw bits except the following: */ |
207 | target_ureg psw_n; /* boolean */ | |
208 | target_sreg psw_v; /* in most significant bit */ | |
61766fe9 RH |
209 | |
210 | /* Splitting the carry-borrow field into the MSB and "the rest", allows | |
211 | * for "the rest" to be deleted when it is unused, but the MSB is in use. | |
212 | * In addition, it's easier to compute carry-in for bit B+1 than it is to | |
213 | * compute carry-out for bit B (3 vs 4 insns for addition, assuming the | |
214 | * host has the appropriate add-with-carry insn to compute the msb). | |
215 | * Therefore the carry bits are stored as: cb_msb : cb & 0x11111110. | |
216 | */ | |
eaa3783b RH |
217 | target_ureg psw_cb; /* in least significant bit of next nibble */ |
218 | target_ureg psw_cb_msb; /* boolean */ | |
61766fe9 | 219 | |
c301f34e RH |
220 | uint64_t iasq_f; |
221 | uint64_t iasq_b; | |
61766fe9 | 222 | |
61766fe9 RH |
223 | uint32_t fr0_shadow; /* flags, c, ca/cq, rm, d, enables */ |
224 | float_status fp_status; | |
225 | ||
35136a77 RH |
226 | target_ureg cr[32]; /* control registers */ |
227 | target_ureg cr_back[2]; /* back of cr17/cr18 */ | |
f49b3537 | 228 | target_ureg shadow[7]; /* shadow registers */ |
35136a77 | 229 | |
650cdb2a | 230 | /* ??? The number of entries isn't specified by the architecture. */ |
711212ac HD |
231 | #ifdef TARGET_HPPA64 |
232 | #define HPPA_BTLB_FIXED 0 /* BTLBs are not supported in 64-bit machines */ | |
233 | #else | |
234 | #define HPPA_BTLB_FIXED 16 | |
235 | #endif | |
236 | #define HPPA_BTLB_VARIABLE 0 | |
df5c6a50 | 237 | #define HPPA_TLB_ENTRIES 256 |
711212ac | 238 | #define HPPA_BTLB_ENTRIES (HPPA_BTLB_FIXED + HPPA_BTLB_VARIABLE) |
df5c6a50 | 239 | |
d7553f35 | 240 | /* Index for round-robin tlb eviction. */ |
650cdb2a | 241 | uint32_t tlb_last; |
d7553f35 RH |
242 | |
243 | /* | |
244 | * For pa1.x, the partial initialized, still invalid tlb entry | |
245 | * which has had ITLBA performed, but not yet ITLBP. | |
246 | */ | |
247 | HPPATLBEntry *tlb_partial; | |
248 | ||
249 | /* Linked list of all invalid (unused) tlb entries. */ | |
250 | HPPATLBEntry *tlb_unused; | |
251 | ||
252 | /* Root of the search tree for all valid tlb entries. */ | |
253 | IntervalTreeRoot tlb_root; | |
254 | ||
255 | HPPATLBEntry tlb[HPPA_TLB_ENTRIES]; | |
1ea4a06a | 256 | } CPUHPPAState; |
61766fe9 RH |
257 | |
258 | /** | |
259 | * HPPACPU: | |
260 | * @env: #CPUHPPAState | |
261 | * | |
262 | * An HPPA CPU. | |
263 | */ | |
b36e239e | 264 | struct ArchCPU { |
61766fe9 RH |
265 | /*< private >*/ |
266 | CPUState parent_obj; | |
267 | /*< public >*/ | |
268 | ||
269 | CPUHPPAState env; | |
49c29d6c | 270 | QEMUTimer *alarm_timer; |
61766fe9 RH |
271 | }; |
272 | ||
61766fe9 RH |
273 | #include "exec/cpu-all.h" |
274 | ||
bd6243a3 RH |
275 | static inline bool hppa_is_pa20(CPUHPPAState *env) |
276 | { | |
277 | return object_dynamic_cast(OBJECT(env_cpu(env)), TYPE_HPPA64_CPU) != NULL; | |
278 | } | |
279 | ||
61766fe9 RH |
280 | static inline int cpu_mmu_index(CPUHPPAState *env, bool ifetch) |
281 | { | |
3d68ee7b RH |
282 | #ifdef CONFIG_USER_ONLY |
283 | return MMU_USER_IDX; | |
284 | #else | |
285 | if (env->psw & (ifetch ? PSW_C : PSW_D)) { | |
bb67ec32 | 286 | return PRIV_P_TO_MMU_IDX(env->iaoq_f & 3, env->psw & PSW_P); |
3d68ee7b RH |
287 | } |
288 | return MMU_PHYS_IDX; /* mmu disabled */ | |
289 | #endif | |
61766fe9 RH |
290 | } |
291 | ||
292 | void hppa_translate_init(void); | |
293 | ||
0dacec87 | 294 | #define CPU_RESOLVING_TYPE TYPE_HPPA_CPU |
61766fe9 | 295 | |
c301f34e RH |
296 | static inline target_ulong hppa_form_gva_psw(target_ureg psw, uint64_t spc, |
297 | target_ureg off) | |
298 | { | |
299 | #ifdef CONFIG_USER_ONLY | |
300 | return off; | |
301 | #else | |
302 | off &= (psw & PSW_W ? 0x3fffffffffffffffull : 0xffffffffull); | |
303 | return spc | off; | |
304 | #endif | |
305 | } | |
306 | ||
307 | static inline target_ulong hppa_form_gva(CPUHPPAState *env, uint64_t spc, | |
308 | target_ureg off) | |
309 | { | |
310 | return hppa_form_gva_psw(env->psw, spc, off); | |
311 | } | |
312 | ||
217d1a5e RH |
313 | /* |
314 | * Since PSW_{I,CB} will never need to be in tb->flags, reuse them. | |
494737b7 RH |
315 | * TB_FLAG_SR_SAME indicates that SR4 through SR7 all contain the |
316 | * same value. | |
317 | */ | |
318 | #define TB_FLAG_SR_SAME PSW_I | |
c301f34e | 319 | #define TB_FLAG_PRIV_SHIFT 8 |
217d1a5e | 320 | #define TB_FLAG_UNALIGN 0x400 |
c301f34e | 321 | |
bb5de525 AJ |
322 | static inline void cpu_get_tb_cpu_state(CPUHPPAState *env, vaddr *pc, |
323 | uint64_t *cs_base, uint32_t *pflags) | |
61766fe9 | 324 | { |
c301f34e RH |
325 | uint32_t flags = env->psw_n * PSW_N; |
326 | ||
327 | /* TB lookup assumes that PC contains the complete virtual address. | |
328 | If we leave space+offset separate, we'll get ITLB misses to an | |
329 | incomplete virtual address. This also means that we must separate | |
8b81968c | 330 | out current cpu privilege from the low bits of IAOQ_F. */ |
c301f34e | 331 | #ifdef CONFIG_USER_ONLY |
ebd0e151 RH |
332 | *pc = env->iaoq_f & -4; |
333 | *cs_base = env->iaoq_b & -4; | |
217d1a5e | 334 | flags |= TB_FLAG_UNALIGN * !env_cpu(env)->prctl_unalign_sigbus; |
c301f34e | 335 | #else |
bb67ec32 RH |
336 | /* ??? E, T, H, L, B bits need to be here, when implemented. */ |
337 | flags |= env->psw & (PSW_W | PSW_C | PSW_D | PSW_P); | |
c301f34e RH |
338 | flags |= (env->iaoq_f & 3) << TB_FLAG_PRIV_SHIFT; |
339 | ||
340 | *pc = (env->psw & PSW_C | |
341 | ? hppa_form_gva_psw(env->psw, env->iasq_f, env->iaoq_f & -4) | |
342 | : env->iaoq_f & -4); | |
343 | *cs_base = env->iasq_f; | |
344 | ||
345 | /* Insert a difference between IAOQ_B and IAOQ_F within the otherwise zero | |
346 | low 32-bits of CS_BASE. This will succeed for all direct branches, | |
347 | which is the primary case we care about -- using goto_tb within a page. | |
348 | Failure is indicated by a zero difference. */ | |
349 | if (env->iasq_f == env->iasq_b) { | |
350 | target_sreg diff = env->iaoq_b - env->iaoq_f; | |
351 | if (TARGET_REGISTER_BITS == 32 || diff == (int32_t)diff) { | |
352 | *cs_base |= (uint32_t)diff; | |
353 | } | |
354 | } | |
494737b7 RH |
355 | if ((env->sr[4] == env->sr[5]) |
356 | & (env->sr[4] == env->sr[6]) | |
357 | & (env->sr[4] == env->sr[7])) { | |
358 | flags |= TB_FLAG_SR_SAME; | |
359 | } | |
c301f34e RH |
360 | #endif |
361 | ||
362 | *pflags = flags; | |
61766fe9 RH |
363 | } |
364 | ||
eaa3783b RH |
365 | target_ureg cpu_hppa_get_psw(CPUHPPAState *env); |
366 | void cpu_hppa_put_psw(CPUHPPAState *env, target_ureg); | |
61766fe9 RH |
367 | void cpu_hppa_loaded_fr0(CPUHPPAState *env); |
368 | ||
d5de20bd SS |
369 | #ifdef CONFIG_USER_ONLY |
370 | static inline void cpu_hppa_change_prot_id(CPUHPPAState *env) { } | |
371 | #else | |
372 | void cpu_hppa_change_prot_id(CPUHPPAState *env); | |
373 | #endif | |
374 | ||
a010bdbe | 375 | int hppa_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg); |
61766fe9 | 376 | int hppa_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); |
90c84c56 | 377 | void hppa_cpu_dump_state(CPUState *cs, FILE *f, int); |
860e0b96 | 378 | #ifndef CONFIG_USER_ONLY |
d7553f35 | 379 | void hppa_ptlbe(CPUHPPAState *env); |
6d2d454a | 380 | hwaddr hppa_cpu_get_phys_page_debug(CPUState *cs, vaddr addr); |
3c7bef03 RH |
381 | bool hppa_cpu_tlb_fill(CPUState *cs, vaddr address, int size, |
382 | MMUAccessType access_type, int mmu_idx, | |
383 | bool probe, uintptr_t retaddr); | |
68fa1780 PMD |
384 | void hppa_cpu_do_interrupt(CPUState *cpu); |
385 | bool hppa_cpu_exec_interrupt(CPUState *cpu, int int_req); | |
650cdb2a | 386 | int hppa_get_physical_address(CPUHPPAState *env, vaddr addr, int mmu_idx, |
fa824d99 | 387 | int type, hwaddr *pphys, int *pprot, |
729cd350 | 388 | HPPATLBEntry **tlb_entry); |
4f5f2548 | 389 | extern const MemoryRegionOps hppa_io_eir_ops; |
8a9358cc | 390 | extern const VMStateDescription vmstate_hppa_cpu; |
49c29d6c | 391 | void hppa_cpu_alarm_timer(void *); |
43e05652 | 392 | int hppa_artype_for_page(CPUHPPAState *env, target_ulong vaddr); |
650cdb2a | 393 | #endif |
8905770b | 394 | G_NORETURN void hppa_dynamic_excp(CPUHPPAState *env, int excp, uintptr_t ra); |
61766fe9 RH |
395 | |
396 | #endif /* HPPA_CPU_H */ |