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[qemu-kvm/fedora.git] / softmmu_header.h
bloba1b3808493e1375f273cdf1477d57e025bf9f7e3
1 /*
2 * Software MMU support
4 * Copyright (c) 2003 Fabrice Bellard
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.
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.
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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
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
42 #if ACCESS_TYPE < (NB_MMU_MODES)
44 #define CPU_MMU_INDEX ACCESS_TYPE
45 #define MMUSUFFIX _mmu
47 #elif ACCESS_TYPE == (NB_MMU_MODES)
49 #define CPU_MMU_INDEX (cpu_mmu_index(env))
50 #define MMUSUFFIX _mmu
52 #elif ACCESS_TYPE == (NB_MMU_MODES + 1)
54 #define CPU_MMU_INDEX (cpu_mmu_index(env))
55 #define MMUSUFFIX _cmmu
57 #else
58 #error invalid ACCESS_TYPE
59 #endif
61 #if DATA_SIZE == 8
62 #define RES_TYPE uint64_t
63 #else
64 #define RES_TYPE int
65 #endif
67 #if ACCESS_TYPE == (NB_MMU_MODES + 1)
68 #define ADDR_READ addr_code
69 #else
70 #define ADDR_READ addr_read
71 #endif
73 #if (DATA_SIZE <= 4) && (TARGET_LONG_BITS == 32) && defined(__i386__) && \
74 (ACCESS_TYPE < NB_MMU_MODES) && defined(ASM_SOFTMMU)
76 static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr)
78 int res;
80 asm volatile ("movl %1, %%edx\n"
81 "movl %1, %%eax\n"
82 "shrl %3, %%edx\n"
83 "andl %4, %%eax\n"
84 "andl %2, %%edx\n"
85 "leal %5(%%edx, %%ebp), %%edx\n"
86 "cmpl (%%edx), %%eax\n"
87 "movl %1, %%eax\n"
88 "je 1f\n"
89 "movl %6, %%edx\n"
90 "call %7\n"
91 "movl %%eax, %0\n"
92 "jmp 2f\n"
93 "1:\n"
94 "addl 12(%%edx), %%eax\n"
95 #if DATA_SIZE == 1
96 "movzbl (%%eax), %0\n"
97 #elif DATA_SIZE == 2
98 "movzwl (%%eax), %0\n"
99 #elif DATA_SIZE == 4
100 "movl (%%eax), %0\n"
101 #else
102 #error unsupported size
103 #endif
104 "2:\n"
105 : "=r" (res)
106 : "r" (ptr),
107 "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS),
108 "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS),
109 "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
110 "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MMU_INDEX][0].addr_read)),
111 "i" (CPU_MMU_INDEX),
112 "m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX))
113 : "%eax", "%ecx", "%edx", "memory", "cc");
114 return res;
117 #if DATA_SIZE <= 2
118 static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr)
120 int res;
122 asm volatile ("movl %1, %%edx\n"
123 "movl %1, %%eax\n"
124 "shrl %3, %%edx\n"
125 "andl %4, %%eax\n"
126 "andl %2, %%edx\n"
127 "leal %5(%%edx, %%ebp), %%edx\n"
128 "cmpl (%%edx), %%eax\n"
129 "movl %1, %%eax\n"
130 "je 1f\n"
131 "movl %6, %%edx\n"
132 "call %7\n"
133 #if DATA_SIZE == 1
134 "movsbl %%al, %0\n"
135 #elif DATA_SIZE == 2
136 "movswl %%ax, %0\n"
137 #else
138 #error unsupported size
139 #endif
140 "jmp 2f\n"
141 "1:\n"
142 "addl 12(%%edx), %%eax\n"
143 #if DATA_SIZE == 1
144 "movsbl (%%eax), %0\n"
145 #elif DATA_SIZE == 2
146 "movswl (%%eax), %0\n"
147 #else
148 #error unsupported size
149 #endif
150 "2:\n"
151 : "=r" (res)
152 : "r" (ptr),
153 "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS),
154 "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS),
155 "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
156 "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MMU_INDEX][0].addr_read)),
157 "i" (CPU_MMU_INDEX),
158 "m" (*(uint8_t *)&glue(glue(__ld, SUFFIX), MMUSUFFIX))
159 : "%eax", "%ecx", "%edx", "memory", "cc");
160 return res;
162 #endif
164 static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v)
166 asm volatile ("movl %0, %%edx\n"
167 "movl %0, %%eax\n"
168 "shrl %3, %%edx\n"
169 "andl %4, %%eax\n"
170 "andl %2, %%edx\n"
171 "leal %5(%%edx, %%ebp), %%edx\n"
172 "cmpl (%%edx), %%eax\n"
173 "movl %0, %%eax\n"
174 "je 1f\n"
175 #if DATA_SIZE == 1
176 "movzbl %b1, %%edx\n"
177 #elif DATA_SIZE == 2
178 "movzwl %w1, %%edx\n"
179 #elif DATA_SIZE == 4
180 "movl %1, %%edx\n"
181 #else
182 #error unsupported size
183 #endif
184 "movl %6, %%ecx\n"
185 "call %7\n"
186 "jmp 2f\n"
187 "1:\n"
188 "addl 8(%%edx), %%eax\n"
189 #if DATA_SIZE == 1
190 "movb %b1, (%%eax)\n"
191 #elif DATA_SIZE == 2
192 "movw %w1, (%%eax)\n"
193 #elif DATA_SIZE == 4
194 "movl %1, (%%eax)\n"
195 #else
196 #error unsupported size
197 #endif
198 "2:\n"
200 : "r" (ptr),
201 #if DATA_SIZE == 1
202 "q" (v),
203 #else
204 "r" (v),
205 #endif
206 "i" ((CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS),
207 "i" (TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS),
208 "i" (TARGET_PAGE_MASK | (DATA_SIZE - 1)),
209 "m" (*(uint32_t *)offsetof(CPUState, tlb_table[CPU_MMU_INDEX][0].addr_write)),
210 "i" (CPU_MMU_INDEX),
211 "m" (*(uint8_t *)&glue(glue(__st, SUFFIX), MMUSUFFIX))
212 : "%eax", "%ecx", "%edx", "memory", "cc");
215 #else
217 /* generic load/store macros */
219 static inline RES_TYPE glue(glue(ld, USUFFIX), MEMSUFFIX)(target_ulong ptr)
221 int page_index;
222 RES_TYPE res;
223 target_ulong addr;
224 unsigned long physaddr;
225 int mmu_idx;
227 addr = ptr;
228 page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
229 mmu_idx = CPU_MMU_INDEX;
230 if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
231 (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
232 res = glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, mmu_idx);
233 } else {
234 physaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
235 res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)physaddr);
237 return res;
240 #if DATA_SIZE <= 2
241 static inline int glue(glue(lds, SUFFIX), MEMSUFFIX)(target_ulong ptr)
243 int res, page_index;
244 target_ulong addr;
245 unsigned long physaddr;
246 int mmu_idx;
248 addr = ptr;
249 page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
250 mmu_idx = CPU_MMU_INDEX;
251 if (unlikely(env->tlb_table[mmu_idx][page_index].ADDR_READ !=
252 (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
253 res = (DATA_STYPE)glue(glue(__ld, SUFFIX), MMUSUFFIX)(addr, mmu_idx);
254 } else {
255 physaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
256 res = glue(glue(lds, SUFFIX), _raw)((uint8_t *)physaddr);
258 return res;
260 #endif
262 #if ACCESS_TYPE != (NB_MMU_MODES + 1)
264 /* generic store macro */
266 static inline void glue(glue(st, SUFFIX), MEMSUFFIX)(target_ulong ptr, RES_TYPE v)
268 int page_index;
269 target_ulong addr;
270 unsigned long physaddr;
271 int mmu_idx;
273 addr = ptr;
274 page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
275 mmu_idx = CPU_MMU_INDEX;
276 if (unlikely(env->tlb_table[mmu_idx][page_index].addr_write !=
277 (addr & (TARGET_PAGE_MASK | (DATA_SIZE - 1))))) {
278 glue(glue(__st, SUFFIX), MMUSUFFIX)(addr, v, mmu_idx);
279 } else {
280 physaddr = addr + env->tlb_table[mmu_idx][page_index].addend;
281 glue(glue(st, SUFFIX), _raw)((uint8_t *)physaddr, v);
285 #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
287 #endif /* !asm */
289 #if ACCESS_TYPE != (NB_MMU_MODES + 1)
291 #if DATA_SIZE == 8
292 static inline float64 glue(ldfq, MEMSUFFIX)(target_ulong ptr)
294 union {
295 float64 d;
296 uint64_t i;
297 } u;
298 u.i = glue(ldq, MEMSUFFIX)(ptr);
299 return u.d;
302 static inline void glue(stfq, MEMSUFFIX)(target_ulong ptr, float64 v)
304 union {
305 float64 d;
306 uint64_t i;
307 } u;
308 u.d = v;
309 glue(stq, MEMSUFFIX)(ptr, u.i);
311 #endif /* DATA_SIZE == 8 */
313 #if DATA_SIZE == 4
314 static inline float32 glue(ldfl, MEMSUFFIX)(target_ulong ptr)
316 union {
317 float32 f;
318 uint32_t i;
319 } u;
320 u.i = glue(ldl, MEMSUFFIX)(ptr);
321 return u.f;
324 static inline void glue(stfl, MEMSUFFIX)(target_ulong ptr, float32 v)
326 union {
327 float32 f;
328 uint32_t i;
329 } u;
330 u.f = v;
331 glue(stl, MEMSUFFIX)(ptr, u.i);
333 #endif /* DATA_SIZE == 4 */
335 #endif /* ACCESS_TYPE != (NB_MMU_MODES + 1) */
337 #undef RES_TYPE
338 #undef DATA_TYPE
339 #undef DATA_STYPE
340 #undef SUFFIX
341 #undef USUFFIX
342 #undef DATA_SIZE
343 #undef CPU_MMU_INDEX
344 #undef MMUSUFFIX
345 #undef ADDR_READ