root / softmmu_header.h @ fb6cf1d0
History | View | Annotate | Download (9.5 kB)
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 |
#if DATA_SIZE == 8 |
21 |
#define SUFFIX q
|
22 |
#define USUFFIX q
|
23 |
#define DATA_TYPE uint64_t
|
24 |
#elif DATA_SIZE == 4 |
25 |
#define SUFFIX l
|
26 |
#define USUFFIX l
|
27 |
#define DATA_TYPE uint32_t
|
28 |
#elif DATA_SIZE == 2 |
29 |
#define SUFFIX w
|
30 |
#define USUFFIX uw
|
31 |
#define DATA_TYPE uint16_t
|
32 |
#define DATA_STYPE int16_t
|
33 |
#elif DATA_SIZE == 1 |
34 |
#define SUFFIX b
|
35 |
#define USUFFIX ub
|
36 |
#define DATA_TYPE uint8_t
|
37 |
#define DATA_STYPE int8_t
|
38 |
#else
|
39 |
#error unsupported data size
|
40 |
#endif
|
41 |
|
42 |
#if ACCESS_TYPE == 0 |
43 |
|
44 |
#define CPU_MEM_INDEX 0 |
45 |
#define MMUSUFFIX _mmu
|
46 |
|
47 |
#elif ACCESS_TYPE == 1 |
48 |
|
49 |
#define CPU_MEM_INDEX 1 |
50 |
#define MMUSUFFIX _mmu
|
51 |
|
52 |
#elif ACCESS_TYPE == 2 |
53 |
|
54 |
#ifdef TARGET_I386
|
55 |
#define CPU_MEM_INDEX ((env->hflags & HF_CPL_MASK) == 3) |
56 |
#elif defined (TARGET_PPC)
|
57 |
#define CPU_MEM_INDEX (msr_pr)
|
58 |
#endif
|
59 |
#define MMUSUFFIX _mmu
|
60 |
|
61 |
#elif ACCESS_TYPE == 3 |
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 |
#endif
|
68 |
#define MMUSUFFIX _cmmu
|
69 |
|
70 |
#else
|
71 |
#error invalid ACCESS_TYPE
|
72 |
#endif
|
73 |
|
74 |
#if DATA_SIZE == 8 |
75 |
#define RES_TYPE uint64_t
|
76 |
#else
|
77 |
#define RES_TYPE int |
78 |
#endif
|
79 |
|
80 |
|
81 |
DATA_TYPE REGPARM(1) glue(glue(__ld, SUFFIX), MMUSUFFIX)(unsigned long addr, |
82 |
int is_user);
|
83 |
void REGPARM(2) glue(glue(__st, SUFFIX), MMUSUFFIX)(unsigned long addr, DATA_TYPE v, int is_user); |
84 |
|
85 |
#if (DATA_SIZE <= 4) && defined(__i386__) && (ACCESS_TYPE <= 1) && defined(ASM_SOFTMMU) |
86 |
|
87 |
static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(void *ptr) |
88 |
{ |
89 |
int res;
|
90 |
|
91 |
asm volatile ("movl %1, %%edx\n" |
92 |
"movl %1, %%eax\n"
|
93 |
"shrl %3, %%edx\n"
|
94 |
"andl %4, %%eax\n"
|
95 |
"andl %2, %%edx\n"
|
96 |
"leal %5(%%edx, %%ebp), %%edx\n"
|
97 |
"cmpl (%%edx), %%eax\n"
|
98 |
"movl %1, %%eax\n"
|
99 |
"je 1f\n"
|
100 |
"pushl %6\n"
|
101 |
"call %7\n"
|
102 |
"popl %%edx\n"
|
103 |
"movl %%eax, %0\n"
|
104 |
"jmp 2f\n"
|
105 |
"1:\n"
|
106 |
"addl 4(%%edx), %%eax\n"
|
107 |
#if DATA_SIZE == 1 |
108 |
"movzbl (%%eax), %0\n"
|
109 |
#elif DATA_SIZE == 2 |
110 |
"movzwl (%%eax), %0\n"
|
111 |
#elif DATA_SIZE == 4 |
112 |
"movl (%%eax), %0\n"
|
113 |
#else
|
114 |
#error unsupported size
|
115 |
#endif
|
116 |
"2:\n"
|
117 |
: "=r" (res)
|
118 |
: "r" (ptr),
|
119 |
"i" ((CPU_TLB_SIZE - 1) << 3), |
120 |
"i" (TARGET_PAGE_BITS - 3), |
121 |
"i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)), |
122 |
"m" (*(uint32_t *)offsetof(CPUState, tlb_read[CPU_MEM_INDEX][0].address)), |
123 |
"i" (CPU_MEM_INDEX),
|
124 |
"m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX))
|
125 |
: "%eax", "%ecx", "%edx", "memory", "cc"); |
126 |
return res;
|
127 |
} |
128 |
|
129 |
#if DATA_SIZE <= 2 |
130 |
static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(void *ptr) |
131 |
{ |
132 |
int res;
|
133 |
|
134 |
asm volatile ("movl %1, %%edx\n" |
135 |
"movl %1, %%eax\n"
|
136 |
"shrl %3, %%edx\n"
|
137 |
"andl %4, %%eax\n"
|
138 |
"andl %2, %%edx\n"
|
139 |
"leal %5(%%edx, %%ebp), %%edx\n"
|
140 |
"cmpl (%%edx), %%eax\n"
|
141 |
"movl %1, %%eax\n"
|
142 |
"je 1f\n"
|
143 |
"pushl %6\n"
|
144 |
"call %7\n"
|
145 |
"popl %%edx\n"
|
146 |
#if DATA_SIZE == 1 |
147 |
"movsbl %%al, %0\n"
|
148 |
#elif DATA_SIZE == 2 |
149 |
"movswl %%ax, %0\n"
|
150 |
#else
|
151 |
#error unsupported size
|
152 |
#endif
|
153 |
"jmp 2f\n"
|
154 |
"1:\n"
|
155 |
"addl 4(%%edx), %%eax\n"
|
156 |
#if DATA_SIZE == 1 |
157 |
"movsbl (%%eax), %0\n"
|
158 |
#elif DATA_SIZE == 2 |
159 |
"movswl (%%eax), %0\n"
|
160 |
#else
|
161 |
#error unsupported size
|
162 |
#endif
|
163 |
"2:\n"
|
164 |
: "=r" (res)
|
165 |
: "r" (ptr),
|
166 |
"i" ((CPU_TLB_SIZE - 1) << 3), |
167 |
"i" (TARGET_PAGE_BITS - 3), |
168 |
"i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)), |
169 |
"m" (*(uint32_t *)offsetof(CPUState, tlb_read[CPU_MEM_INDEX][0].address)), |
170 |
"i" (CPU_MEM_INDEX),
|
171 |
"m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX))
|
172 |
: "%eax", "%ecx", "%edx", "memory", "cc"); |
173 |
return res;
|
174 |
} |
175 |
#endif
|
176 |
|
177 |
static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(void *ptr, RES_TYPE v) |
178 |
{ |
179 |
asm volatile ("movl %0, %%edx\n" |
180 |
"movl %0, %%eax\n"
|
181 |
"shrl %3, %%edx\n"
|
182 |
"andl %4, %%eax\n"
|
183 |
"andl %2, %%edx\n"
|
184 |
"leal %5(%%edx, %%ebp), %%edx\n"
|
185 |
"cmpl (%%edx), %%eax\n"
|
186 |
"movl %0, %%eax\n"
|
187 |
"je 1f\n"
|
188 |
#if DATA_SIZE == 1 |
189 |
"movzbl %b1, %%edx\n"
|
190 |
#elif DATA_SIZE == 2 |
191 |
"movzwl %w1, %%edx\n"
|
192 |
#elif DATA_SIZE == 4 |
193 |
"movl %1, %%edx\n"
|
194 |
#else
|
195 |
#error unsupported size
|
196 |
#endif
|
197 |
"pushl %6\n"
|
198 |
"call %7\n"
|
199 |
"popl %%eax\n"
|
200 |
"jmp 2f\n"
|
201 |
"1:\n"
|
202 |
"addl 4(%%edx), %%eax\n"
|
203 |
#if DATA_SIZE == 1 |
204 |
"movb %b1, (%%eax)\n"
|
205 |
#elif DATA_SIZE == 2 |
206 |
"movw %w1, (%%eax)\n"
|
207 |
#elif DATA_SIZE == 4 |
208 |
"movl %1, (%%eax)\n"
|
209 |
#else
|
210 |
#error unsupported size
|
211 |
#endif
|
212 |
"2:\n"
|
213 |
: |
214 |
: "r" (ptr),
|
215 |
/* NOTE: 'q' would be needed as constraint, but we could not use it
|
216 |
with T1 ! */
|
217 |
"r" (v),
|
218 |
"i" ((CPU_TLB_SIZE - 1) << 3), |
219 |
"i" (TARGET_PAGE_BITS - 3), |
220 |
"i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)), |
221 |
"m" (*(uint32_t *)offsetof(CPUState, tlb_write[CPU_MEM_INDEX][0].address)), |
222 |
"i" (CPU_MEM_INDEX),
|
223 |
"m" (*(uint8_t *)&glue(glue(__st, SUFFIX), MMUSUFFIX))
|
224 |
: "%eax", "%ecx", "%edx", "memory", "cc"); |
225 |
} |
226 |
|
227 |
#else
|
228 |
|
229 |
/* generic load/store macros */
|
230 |
|
231 |
static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(void *ptr) |
232 |
{ |
233 |
int index;
|
234 |
RES_TYPE res; |
235 |
unsigned long addr, physaddr; |
236 |
int is_user;
|
237 |
|
238 |
addr = (unsigned long)ptr; |
239 |
index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
240 |
is_user = CPU_MEM_INDEX; |
241 |
if (__builtin_expect(env->tlb_read[is_user][index].address !=
|
242 |
(addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) { |
243 |
res = glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user); |
244 |
} else {
|
245 |
physaddr = addr + env->tlb_read[is_user][index].addend; |
246 |
res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)physaddr); |
247 |
} |
248 |
return res;
|
249 |
} |
250 |
|
251 |
#if DATA_SIZE <= 2 |
252 |
static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(void *ptr) |
253 |
{ |
254 |
int res, index;
|
255 |
unsigned long addr, physaddr; |
256 |
int is_user;
|
257 |
|
258 |
addr = (unsigned long)ptr; |
259 |
index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
260 |
is_user = CPU_MEM_INDEX; |
261 |
if (__builtin_expect(env->tlb_read[is_user][index].address !=
|
262 |
(addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) { |
263 |
res = (DATA_STYPE)glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, is_user); |
264 |
} else {
|
265 |
physaddr = addr + env->tlb_read[is_user][index].addend; |
266 |
res = glue(glue(lds, SUFFIX), _raw)((uint8_t *)physaddr); |
267 |
} |
268 |
return res;
|
269 |
} |
270 |
#endif
|
271 |
|
272 |
/* generic store macro */
|
273 |
|
274 |
static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(void *ptr, RES_TYPE v) |
275 |
{ |
276 |
int index;
|
277 |
unsigned long addr, physaddr; |
278 |
int is_user;
|
279 |
|
280 |
addr = (unsigned long)ptr; |
281 |
index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
282 |
is_user = CPU_MEM_INDEX; |
283 |
if (__builtin_expect(env->tlb_write[is_user][index].address !=
|
284 |
(addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))), 0)) { |
285 |
glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, is_user); |
286 |
} else {
|
287 |
physaddr = addr + env->tlb_write[is_user][index].addend; |
288 |
glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v); |
289 |
} |
290 |
} |
291 |
|
292 |
#endif
|
293 |
|
294 |
#if DATA_SIZE == 8 |
295 |
static inline double glue(ldfq, MEMSUFFIX)(void *ptr) |
296 |
{ |
297 |
union {
|
298 |
double d;
|
299 |
uint64_t i; |
300 |
} u; |
301 |
u.i = glue(ldq, MEMSUFFIX)(ptr); |
302 |
return u.d;
|
303 |
} |
304 |
|
305 |
static inline void glue(stfq, MEMSUFFIX)(void *ptr, double v) |
306 |
{ |
307 |
union {
|
308 |
double d;
|
309 |
uint64_t i; |
310 |
} u; |
311 |
u.d = v; |
312 |
glue(stq, MEMSUFFIX)(ptr, u.i); |
313 |
} |
314 |
#endif /* DATA_SIZE == 8 */ |
315 |
|
316 |
#if DATA_SIZE == 4 |
317 |
static inline float glue(ldfl, MEMSUFFIX)(void *ptr) |
318 |
{ |
319 |
union {
|
320 |
float f;
|
321 |
uint32_t i; |
322 |
} u; |
323 |
u.i = glue(ldl, MEMSUFFIX)(ptr); |
324 |
return u.f;
|
325 |
} |
326 |
|
327 |
static inline void glue(stfl, MEMSUFFIX)(void *ptr, float v) |
328 |
{ |
329 |
union {
|
330 |
float f;
|
331 |
uint32_t i; |
332 |
} u; |
333 |
u.f = v; |
334 |
glue(stl, MEMSUFFIX)(ptr, u.i); |
335 |
} |
336 |
#endif /* DATA_SIZE == 4 */ |
337 |
|
338 |
#undef RES_TYPE
|
339 |
#undef DATA_TYPE
|
340 |
#undef DATA_STYPE
|
341 |
#undef SUFFIX
|
342 |
#undef USUFFIX
|
343 |
#undef DATA_SIZE
|
344 |
#undef CPU_MEM_INDEX
|
345 |
#undef MMUSUFFIX
|