1 | /*
|
---|
2 | * Software MMU support
|
---|
3 | *
|
---|
4 | * Copyright (c) 2003 Fabrice Bellard
|
---|
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
|
---|
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
|
---|
19 | */
|
---|
20 |
|
---|
21 | /*
|
---|
22 | * Sun LGPL Disclaimer: For the avoidance of doubt, except that if any license choice
|
---|
23 | * other than GPL or LGPL is available it will apply instead, Sun elects to use only
|
---|
24 | * the Lesser General Public License version 2.1 (LGPLv2) at this time for any software where
|
---|
25 | * a choice of LGPL license versions is made available with the language indicating
|
---|
26 | * that LGPLv2 or any later version may be used, or where a choice of which version
|
---|
27 | * of the LGPL is applied is otherwise unspecified.
|
---|
28 | */
|
---|
29 | #if DATA_SIZE == 8
|
---|
30 | #define SUFFIX q
|
---|
31 | #define USUFFIX q
|
---|
32 | #define DATA_TYPE uint64_t
|
---|
33 | #elif DATA_SIZE == 4
|
---|
34 | #define SUFFIX l
|
---|
35 | #define USUFFIX l
|
---|
36 | #define DATA_TYPE uint32_t
|
---|
37 | #elif DATA_SIZE == 2
|
---|
38 | #define SUFFIX w
|
---|
39 | #define USUFFIX uw
|
---|
40 | #define DATA_TYPE uint16_t
|
---|
41 | #define DATA_STYPE int16_t
|
---|
42 | #elif DATA_SIZE == 1
|
---|
43 | #define SUFFIX b
|
---|
44 | #define USUFFIX ub
|
---|
45 | #define DATA_TYPE uint8_t
|
---|
46 | #define DATA_STYPE int8_t
|
---|
47 | #else
|
---|
48 | #error unsupported data size
|
---|
49 | #endif
|
---|
50 |
|
---|
51 | #if ACCESS_TYPE == 0
|
---|
52 |
|
---|
53 | #define CPU_MEM_INDEX 0
|
---|
54 | #define MMUSUFFIX _mmu
|
---|
55 |
|
---|
56 | #elif ACCESS_TYPE == 1
|
---|
57 |
|
---|
58 | #define CPU_MEM_INDEX 1
|
---|
59 | #define MMUSUFFIX _mmu
|
---|
60 |
|
---|
61 | #elif ACCESS_TYPE == 2
|
---|
62 |
|
---|
63 | #ifdef TARGET_I386
|
---|
64 | #define CPU_MEM_INDEX ((env->hflags & HF_CPL_MASK) == 3)
|
---|
65 | #elif defined (TARGET_PPC)
|
---|
66 | #define CPU_MEM_INDEX (msr_pr)
|
---|
67 | #elif defined (TARGET_MIPS)
|
---|
68 | #define CPU_MEM_INDEX ((env->hflags & MIPS_HFLAG_MODE) == MIPS_HFLAG_UM)
|
---|
69 | #elif defined (TARGET_SPARC)
|
---|
70 | #define CPU_MEM_INDEX ((env->psrs) == 0)
|
---|
71 | #elif defined (TARGET_ARM)
|
---|
72 | #define CPU_MEM_INDEX ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR)
|
---|
73 | #elif defined (TARGET_SH4)
|
---|
74 | #define CPU_MEM_INDEX ((env->sr & SR_MD) == 0)
|
---|
75 | #else
|
---|
76 | #error unsupported CPU
|
---|
77 | #endif
|
---|
78 | #define MMUSUFFIX _mmu
|
---|
79 |
|
---|
80 | #elif ACCESS_TYPE == 3
|
---|
81 |
|
---|
82 | #ifdef TARGET_I386
|
---|
83 | #define CPU_MEM_INDEX ((env->hflags & HF_CPL_MASK) == 3)
|
---|
84 | #elif defined (TARGET_PPC)
|
---|
85 | #define CPU_MEM_INDEX (msr_pr)
|
---|
86 | #elif defined (TARGET_MIPS)
|
---|
87 | #define CPU_MEM_INDEX ((env->hflags & MIPS_HFLAG_MODE) == MIPS_HFLAG_UM)
|
---|
88 | #elif defined (TARGET_SPARC)
|
---|
89 | #define CPU_MEM_INDEX ((env->psrs) == 0)
|
---|
90 | #elif defined (TARGET_ARM)
|
---|
91 | #define CPU_MEM_INDEX ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR)
|
---|
92 | #elif defined (TARGET_SH4)
|
---|
93 | #define CPU_MEM_INDEX ((env->sr & SR_MD) == 0)
|
---|
94 | #else
|
---|
95 | #error unsupported CPU
|
---|
96 | #endif
|
---|
97 | #define MMUSUFFIX _cmmu
|
---|
98 |
|
---|
99 | #else
|
---|
100 | #error invalid ACCESS_TYPE
|
---|
101 | #endif
|
---|
102 |
|
---|
103 | #if DATA_SIZE == 8
|
---|
104 | #define RES_TYPE uint64_t
|
---|
105 | #else
|
---|
106 | #define RES_TYPE int
|
---|
107 | #endif
|
---|
108 |
|
---|
109 | #if ACCESS_TYPE == 3
|
---|
110 | #define ADDR_READ addr_code
|
---|
111 | #else
|
---|
112 | #define ADDR_READ addr_read
|
---|
113 | #endif
|
---|
114 |
|
---|
115 | DATA_TYPE REGPARM(1) glue(glue(__ld, SUFFIX), MMUSUFFIX)(target_ulong addr,
|
---|
116 | int is_user);
|
---|
117 | void REGPARM(2) glue(glue(__st, SUFFIX), MMUSUFFIX)(target_ulong addr, DATA_TYPE v, int is_user);
|
---|
118 |
|
---|
119 | #if (DATA_SIZE <= 4) && (TARGET_LONG_BITS == 32) && defined(__i386__) && \
|
---|
120 | (ACCESS_TYPE <= 1) && defined(ASM_SOFTMMU) && (!defined(VBOX) || !defined(REM_PHYS_ADDR_IN_TLB))
|
---|
121 |
|
---|
122 | #define CPU_TLB_ENTRY_BITS 4
|
---|
123 |
|
---|
124 | static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr)
|
---|
125 | {
|
---|
126 | int res;
|
---|
127 |
|
---|
128 | asm volatile ("movl %1, %%edx\n"
|
---|
129 | "movl %1, %%eax\n"
|
---|
130 | "shrl %3, %%edx\n"
|
---|
131 | "andl %4, %%eax\n"
|
---|
132 | "andl %2, %%edx\n"
|
---|
133 | "leal %5(%%edx, %%ebp), %%edx\n"
|
---|
134 | "cmpl (%%edx), %%eax\n"
|
---|
135 | "movl %1, %%eax\n"
|
---|
136 | "je 1f\n"
|
---|
137 | "pushl %6\n"
|
---|
138 | "call %7\n"
|
---|
139 | "popl %%edx\n"
|
---|
140 | "movl %%eax, %0\n"
|
---|
141 | "jmp 2f\n"
|
---|
142 | "1:\n"
|
---|
143 | "addl 12(%%edx), %%eax\n"
|
---|
144 | #if DATA_SIZE == 1
|
---|
145 | "movzbl (%%eax), %0\n"
|
---|
146 | #elif DATA_SIZE == 2
|
---|
147 | "movzwl (%%eax), %0\n"
|
---|
148 | #elif DATA_SIZE == 4
|
---|
149 | "movl (%%eax), %0\n"
|
---|
150 | #else
|
---|
151 | #error unsupported size
|
---|
152 | #endif
|
---|
153 | "2:\n"
|
---|
154 | : "=r" (res)
|
---|
155 | : "r" (ptr),
|
---|
156 | "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS),
|
---|
157 | "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS),
|
---|
158 | "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
|
---|
159 | "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MEM_INDEX][0].addr_read)),
|
---|
160 | "i" (CPU_MEM_INDEX),
|
---|
161 | "m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX))
|
---|
162 | : "%eax", "%ecx", "%edx", "memory", "cc");
|
---|
163 | return res;
|
---|
164 | }
|
---|
165 |
|
---|
166 | #if DATA_SIZE <= 2
|
---|
167 | static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr)
|
---|
168 | {
|
---|
169 | int res;
|
---|
170 |
|
---|
171 | asm volatile ("movl %1, %%edx\n"
|
---|
172 | "movl %1, %%eax\n"
|
---|
173 | "shrl %3, %%edx\n"
|
---|
174 | "andl %4, %%eax\n"
|
---|
175 | "andl %2, %%edx\n"
|
---|
176 | "leal %5(%%edx, %%ebp), %%edx\n"
|
---|
177 | "cmpl (%%edx), %%eax\n"
|
---|
178 | "movl %1, %%eax\n"
|
---|
179 | "je 1f\n"
|
---|
180 | "pushl %6\n"
|
---|
181 | "call %7\n"
|
---|
182 | "popl %%edx\n"
|
---|
183 | #if DATA_SIZE == 1
|
---|
184 | "movsbl %%al, %0\n"
|
---|
185 | #elif DATA_SIZE == 2
|
---|
186 | "movswl %%ax, %0\n"
|
---|
187 | #else
|
---|
188 | #error unsupported size
|
---|
189 | #endif
|
---|
190 | "jmp 2f\n"
|
---|
191 | "1:\n"
|
---|
192 | "addl 12(%%edx), %%eax\n"
|
---|
193 | #if DATA_SIZE == 1
|
---|
194 | "movsbl (%%eax), %0\n"
|
---|
195 | #elif DATA_SIZE == 2
|
---|
196 | "movswl (%%eax), %0\n"
|
---|
197 | #else
|
---|
198 | #error unsupported size
|
---|
199 | #endif
|
---|
200 | "2:\n"
|
---|
201 | : "=r" (res)
|
---|
202 | : "r" (ptr),
|
---|
203 | "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS),
|
---|
204 | "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS),
|
---|
205 | "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
|
---|
206 | "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MEM_INDEX][0].addr_read)),
|
---|
207 | "i" (CPU_MEM_INDEX),
|
---|
208 | "m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX))
|
---|
209 | : "%eax", "%ecx", "%edx", "memory", "cc");
|
---|
210 | return res;
|
---|
211 | }
|
---|
212 | #endif
|
---|
213 |
|
---|
214 | #ifdef VBOX
|
---|
215 | /* generic store macro */
|
---|
216 |
|
---|
217 | static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v)
|
---|
218 | {
|
---|
219 | int index;
|
---|
220 | target_ulong addr;
|
---|
221 | unsigned long physaddr;
|
---|
222 | int is_user;
|
---|
223 |
|
---|
224 | addr = ptr;
|
---|
225 | index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
---|
226 | is_user = CPU_MEM_INDEX;
|
---|
227 | if (__builtin_expect(env->tlb_table[is_user][index].addr_write !=
|
---|
228 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
|
---|
229 | glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, is_user);
|
---|
230 | } else {
|
---|
231 | physaddr = addr + env->tlb_table[is_user][index].addend;
|
---|
232 | glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v);
|
---|
233 | }
|
---|
234 | }
|
---|
235 |
|
---|
236 | #else /* !VBOX */
|
---|
237 |
|
---|
238 | static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v)
|
---|
239 | {
|
---|
240 | asm volatile ("movl %0, %%edx\n"
|
---|
241 | "movl %0, %%eax\n"
|
---|
242 | "shrl %3, %%edx\n"
|
---|
243 | "andl %4, %%eax\n"
|
---|
244 | "andl %2, %%edx\n"
|
---|
245 | "leal %5(%%edx, %%ebp), %%edx\n"
|
---|
246 | "cmpl (%%edx), %%eax\n"
|
---|
247 | "movl %0, %%eax\n"
|
---|
248 | "je 1f\n"
|
---|
249 | #if DATA_SIZE == 1
|
---|
250 | "movzbl %b1, %%edx\n"
|
---|
251 | #elif DATA_SIZE == 2
|
---|
252 | "movzwl %w1, %%edx\n"
|
---|
253 | #elif DATA_SIZE == 4
|
---|
254 | "movl %1, %%edx\n"
|
---|
255 | #else
|
---|
256 | #error unsupported size
|
---|
257 | #endif
|
---|
258 | "pushl %6\n"
|
---|
259 | "call %7\n"
|
---|
260 | "popl %%eax\n"
|
---|
261 | "jmp 2f\n"
|
---|
262 | "1:\n"
|
---|
263 | "addl 8(%%edx), %%eax\n"
|
---|
264 | #if DATA_SIZE == 1
|
---|
265 | "movb %b1, (%%eax)\n"
|
---|
266 | #elif DATA_SIZE == 2
|
---|
267 | "movw %w1, (%%eax)\n"
|
---|
268 | #elif DATA_SIZE == 4
|
---|
269 | "movl %1, (%%eax)\n"
|
---|
270 | #else
|
---|
271 | #error unsupported size
|
---|
272 | #endif
|
---|
273 | "2:\n"
|
---|
274 | :
|
---|
275 | : "r" (ptr),
|
---|
276 | /* NOTE: 'q' would be needed as constraint, but we could not use it
|
---|
277 | with T1 ! */
|
---|
278 | "r" (v),
|
---|
279 | "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS),
|
---|
280 | "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS),
|
---|
281 | "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
|
---|
282 | "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MEM_INDEX][0].addr_write)),
|
---|
283 | "i" (CPU_MEM_INDEX),
|
---|
284 | "m" (*(uint8_t *)&glue(glue(__st, SUFFIX), MMUSUFFIX))
|
---|
285 | : "%eax", "%ecx", "%edx", "memory", "cc");
|
---|
286 | }
|
---|
287 | #endif /* !VBOX */
|
---|
288 |
|
---|
289 | #else
|
---|
290 |
|
---|
291 | /* generic load/store macros */
|
---|
292 |
|
---|
293 | static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr)
|
---|
294 | {
|
---|
295 | int index;
|
---|
296 | RES_TYPE res;
|
---|
297 | target_ulong addr;
|
---|
298 | unsigned long physaddr;
|
---|
299 | int is_user;
|
---|
300 |
|
---|
301 | addr = ptr;
|
---|
302 | index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
---|
303 | is_user = CPU_MEM_INDEX;
|
---|
304 | if (__builtin_expect(env->tlb_table[is_user][index].ADDR_READ !=
|
---|
305 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
|
---|
306 | res = glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user);
|
---|
307 | } else {
|
---|
308 | physaddr = addr + env->tlb_table[is_user][index].addend;
|
---|
309 | res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)physaddr);
|
---|
310 | }
|
---|
311 | return res;
|
---|
312 | }
|
---|
313 |
|
---|
314 | #if DATA_SIZE <= 2
|
---|
315 | static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr)
|
---|
316 | {
|
---|
317 | int res, index;
|
---|
318 | target_ulong addr;
|
---|
319 | unsigned long physaddr;
|
---|
320 | int is_user;
|
---|
321 |
|
---|
322 | addr = ptr;
|
---|
323 | index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
---|
324 | is_user = CPU_MEM_INDEX;
|
---|
325 | if (__builtin_expect(env->tlb_table[is_user][index].ADDR_READ !=
|
---|
326 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
|
---|
327 | res = (DATA_STYPE)glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user);
|
---|
328 | } else {
|
---|
329 | physaddr = addr + env->tlb_table[is_user][index].addend;
|
---|
330 | res = glue(glue(lds, SUFFIX), _raw)((uint8_t *)physaddr);
|
---|
331 | }
|
---|
332 | return res;
|
---|
333 | }
|
---|
334 | #endif
|
---|
335 |
|
---|
336 | #if ACCESS_TYPE != 3
|
---|
337 |
|
---|
338 | /* generic store macro */
|
---|
339 |
|
---|
340 | static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v)
|
---|
341 | {
|
---|
342 | int index;
|
---|
343 | target_ulong addr;
|
---|
344 | unsigned long physaddr;
|
---|
345 | int is_user;
|
---|
346 |
|
---|
347 | addr = ptr;
|
---|
348 | index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
---|
349 | is_user = CPU_MEM_INDEX;
|
---|
350 | if (__builtin_expect(env->tlb_table[is_user][index].addr_write !=
|
---|
351 | (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) {
|
---|
352 | glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, is_user);
|
---|
353 | } else {
|
---|
354 | physaddr = addr + env->tlb_table[is_user][index].addend;
|
---|
355 | glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v);
|
---|
356 | }
|
---|
357 | }
|
---|
358 |
|
---|
359 | #endif /* ACCESS_TYPE != 3 */
|
---|
360 |
|
---|
361 | #endif /* !asm */
|
---|
362 |
|
---|
363 | #if ACCESS_TYPE != 3
|
---|
364 |
|
---|
365 | #if DATA_SIZE == 8
|
---|
366 | static inline float64 glue(ldfq, MEMSUFFIX)(target_ulong ptr)
|
---|
367 | {
|
---|
368 | union {
|
---|
369 | float64 d;
|
---|
370 | uint64_t i;
|
---|
371 | } u;
|
---|
372 | u.i = glue(ldq, MEMSUFFIX)(ptr);
|
---|
373 | return u.d;
|
---|
374 | }
|
---|
375 |
|
---|
376 | static inline void glue(stfq, MEMSUFFIX)(target_ulong ptr, float64 v)
|
---|
377 | {
|
---|
378 | union {
|
---|
379 | float64 d;
|
---|
380 | uint64_t i;
|
---|
381 | } u;
|
---|
382 | u.d = v;
|
---|
383 | glue(stq, MEMSUFFIX)(ptr, u.i);
|
---|
384 | }
|
---|
385 | #endif /* DATA_SIZE == 8 */
|
---|
386 |
|
---|
387 | #if DATA_SIZE == 4
|
---|
388 | static inline float32 glue(ldfl, MEMSUFFIX)(target_ulong ptr)
|
---|
389 | {
|
---|
390 | union {
|
---|
391 | float32 f;
|
---|
392 | uint32_t i;
|
---|
393 | } u;
|
---|
394 | u.i = glue(ldl, MEMSUFFIX)(ptr);
|
---|
395 | return u.f;
|
---|
396 | }
|
---|
397 |
|
---|
398 | static inline void glue(stfl, MEMSUFFIX)(target_ulong ptr, float32 v)
|
---|
399 | {
|
---|
400 | union {
|
---|
401 | float32 f;
|
---|
402 | uint32_t i;
|
---|
403 | } u;
|
---|
404 | u.f = v;
|
---|
405 | glue(stl, MEMSUFFIX)(ptr, u.i);
|
---|
406 | }
|
---|
407 | #endif /* DATA_SIZE == 4 */
|
---|
408 |
|
---|
409 | #endif /* ACCESS_TYPE != 3 */
|
---|
410 |
|
---|
411 | #undef RES_TYPE
|
---|
412 | #undef DATA_TYPE
|
---|
413 | #undef DATA_STYPE
|
---|
414 | #undef SUFFIX
|
---|
415 | #undef USUFFIX
|
---|
416 | #undef DATA_SIZE
|
---|
417 | #undef CPU_MEM_INDEX
|
---|
418 | #undef MMUSUFFIX
|
---|
419 | #undef ADDR_READ
|
---|