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, see <http://www.gnu.org/licenses/>.
19 #define DATA_SIZE (1 << SHIFT)
24 #define DATA_TYPE uint64_t
28 #define DATA_TYPE uint32_t
32 #define DATA_TYPE uint16_t
36 #define DATA_TYPE uint8_t
38 #error unsupported data size
41 #ifdef SOFTMMU_CODE_ACCESS
42 #define READ_ACCESS_TYPE 2
43 #define ADDR_READ addr_code
45 #define READ_ACCESS_TYPE 0
46 #define ADDR_READ addr_read
49 static DATA_TYPE glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(target_ulong addr,
52 static inline DATA_TYPE glue(io_read, SUFFIX)(target_phys_addr_t physaddr,
58 index = (physaddr >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
59 physaddr = (physaddr & TARGET_PAGE_MASK) + addr;
60 env->mem_io_pc = (unsigned long)retaddr;
61 if (index > (IO_MEM_NOTDIRTY >> IO_MEM_SHIFT)
63 cpu_io_recompile(env, retaddr);
66 env->mem_io_vaddr = addr;
68 res = io_mem_read[index][SHIFT](io_mem_opaque[index], physaddr);
70 #ifdef TARGET_WORDS_BIGENDIAN
71 res = (uint64_t)io_mem_read[index][2](io_mem_opaque[index], physaddr) << 32;
72 res |= io_mem_read[index][2](io_mem_opaque[index], physaddr + 4);
74 res = io_mem_read[index][2](io_mem_opaque[index], physaddr);
75 res |= (uint64_t)io_mem_read[index][2](io_mem_opaque[index], physaddr + 4) << 32;
77 #endif /* SHIFT > 2 */
81 /* handle all cases except unaligned access which span two pages */
82 DATA_TYPE REGPARM glue(glue(__ld, SUFFIX), MMUSUFFIX)(target_ulong addr,
87 target_ulong tlb_addr;
88 target_phys_addr_t addend;
91 /* test if there is match for unaligned or IO access */
92 /* XXX: could done more in memory macro in a non portable way */
93 index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
95 tlb_addr = env->tlb_table[mmu_idx][index].ADDR_READ;
96 if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
97 if (tlb_addr & ~TARGET_PAGE_MASK) {
99 if ((addr & (DATA_SIZE - 1)) != 0)
100 goto do_unaligned_access;
102 addend = env->iotlb[mmu_idx][index];
103 res = glue(io_read, SUFFIX)(addend, addr, retaddr);
104 } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
105 /* slow unaligned access (it spans two pages or IO) */
109 do_unaligned_access(addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
111 res = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(addr,
114 /* unaligned/aligned access in the same page */
116 if ((addr & (DATA_SIZE - 1)) != 0) {
118 do_unaligned_access(addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
121 addend = env->tlb_table[mmu_idx][index].addend;
122 res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)(long)(addr+addend));
125 /* the page is not in the TLB : fill it */
128 if ((addr & (DATA_SIZE - 1)) != 0)
129 do_unaligned_access(addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
131 tlb_fill(addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
137 /* handle all unaligned cases */
138 static DATA_TYPE glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(target_ulong addr,
142 DATA_TYPE res, res1, res2;
144 target_phys_addr_t addend;
145 target_ulong tlb_addr, addr1, addr2;
147 index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
149 tlb_addr = env->tlb_table[mmu_idx][index].ADDR_READ;
150 if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
151 if (tlb_addr & ~TARGET_PAGE_MASK) {
153 if ((addr & (DATA_SIZE - 1)) != 0)
154 goto do_unaligned_access;
155 addend = env->iotlb[mmu_idx][index];
156 res = glue(io_read, SUFFIX)(addend, addr, retaddr);
157 } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
159 /* slow unaligned access (it spans two pages) */
160 addr1 = addr & ~(DATA_SIZE - 1);
161 addr2 = addr1 + DATA_SIZE;
162 res1 = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(addr1,
164 res2 = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(addr2,
166 shift = (addr & (DATA_SIZE - 1)) * 8;
167 #ifdef TARGET_WORDS_BIGENDIAN
168 res = (res1 << shift) | (res2 >> ((DATA_SIZE * 8) - shift));
170 res = (res1 >> shift) | (res2 << ((DATA_SIZE * 8) - shift));
172 res = (DATA_TYPE)res;
174 /* unaligned/aligned access in the same page */
175 addend = env->tlb_table[mmu_idx][index].addend;
176 res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)(long)(addr+addend));
179 /* the page is not in the TLB : fill it */
180 tlb_fill(addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
186 #ifndef SOFTMMU_CODE_ACCESS
188 static void glue(glue(slow_st, SUFFIX), MMUSUFFIX)(target_ulong addr,
193 static inline void glue(io_write, SUFFIX)(target_phys_addr_t physaddr,
199 index = (physaddr >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
200 physaddr = (physaddr & TARGET_PAGE_MASK) + addr;
201 if (index > (IO_MEM_NOTDIRTY >> IO_MEM_SHIFT)
202 && !can_do_io(env)) {
203 cpu_io_recompile(env, retaddr);
206 env->mem_io_vaddr = addr;
207 env->mem_io_pc = (unsigned long)retaddr;
209 io_mem_write[index][SHIFT](io_mem_opaque[index], physaddr, val);
211 #ifdef TARGET_WORDS_BIGENDIAN
212 io_mem_write[index][2](io_mem_opaque[index], physaddr, val >> 32);
213 io_mem_write[index][2](io_mem_opaque[index], physaddr + 4, val);
215 io_mem_write[index][2](io_mem_opaque[index], physaddr, val);
216 io_mem_write[index][2](io_mem_opaque[index], physaddr + 4, val >> 32);
218 #endif /* SHIFT > 2 */
221 void REGPARM glue(glue(__st, SUFFIX), MMUSUFFIX)(target_ulong addr,
225 target_phys_addr_t addend;
226 target_ulong tlb_addr;
230 index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
232 tlb_addr = env->tlb_table[mmu_idx][index].addr_write;
233 if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
234 if (tlb_addr & ~TARGET_PAGE_MASK) {
236 if ((addr & (DATA_SIZE - 1)) != 0)
237 goto do_unaligned_access;
239 addend = env->iotlb[mmu_idx][index];
240 glue(io_write, SUFFIX)(addend, val, addr, retaddr);
241 } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
245 do_unaligned_access(addr, 1, mmu_idx, retaddr);
247 glue(glue(slow_st, SUFFIX), MMUSUFFIX)(addr, val,
250 /* aligned/unaligned access in the same page */
252 if ((addr & (DATA_SIZE - 1)) != 0) {
254 do_unaligned_access(addr, 1, mmu_idx, retaddr);
257 addend = env->tlb_table[mmu_idx][index].addend;
258 glue(glue(st, SUFFIX), _raw)((uint8_t *)(long)(addr+addend), val);
261 /* the page is not in the TLB : fill it */
264 if ((addr & (DATA_SIZE - 1)) != 0)
265 do_unaligned_access(addr, 1, mmu_idx, retaddr);
267 tlb_fill(addr, 1, mmu_idx, retaddr);
272 /* handles all unaligned cases */
273 static void glue(glue(slow_st, SUFFIX), MMUSUFFIX)(target_ulong addr,
278 target_phys_addr_t addend;
279 target_ulong tlb_addr;
282 index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
284 tlb_addr = env->tlb_table[mmu_idx][index].addr_write;
285 if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
286 if (tlb_addr & ~TARGET_PAGE_MASK) {
288 if ((addr & (DATA_SIZE - 1)) != 0)
289 goto do_unaligned_access;
290 addend = env->iotlb[mmu_idx][index];
291 glue(io_write, SUFFIX)(addend, val, addr, retaddr);
292 } else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
294 /* XXX: not efficient, but simple */
295 /* Note: relies on the fact that tlb_fill() does not remove the
296 * previous page from the TLB cache. */
297 for(i = DATA_SIZE - 1; i >= 0; i--) {
298 #ifdef TARGET_WORDS_BIGENDIAN
299 glue(slow_stb, MMUSUFFIX)(addr + i, val >> (((DATA_SIZE - 1) * 8) - (i * 8)),
302 glue(slow_stb, MMUSUFFIX)(addr + i, val >> (i * 8),
307 /* aligned/unaligned access in the same page */
308 addend = env->tlb_table[mmu_idx][index].addend;
309 glue(glue(st, SUFFIX), _raw)((uint8_t *)(long)(addr+addend), val);
312 /* the page is not in the TLB : fill it */
313 tlb_fill(addr, 1, mmu_idx, retaddr);
318 #endif /* !defined(SOFTMMU_CODE_ACCESS) */
320 #undef READ_ACCESS_TYPE