root / exec.c @ 14ce26e7
History | View | Annotate | Download (63.4 kB)
1 | 54936004 | bellard | /*
|
---|---|---|---|
2 | fd6ce8f6 | bellard | * virtual page mapping and translated block handling
|
3 | 54936004 | bellard | *
|
4 | 54936004 | bellard | * Copyright (c) 2003 Fabrice Bellard
|
5 | 54936004 | bellard | *
|
6 | 54936004 | bellard | * This library is free software; you can redistribute it and/or
|
7 | 54936004 | bellard | * modify it under the terms of the GNU Lesser General Public
|
8 | 54936004 | bellard | * License as published by the Free Software Foundation; either
|
9 | 54936004 | bellard | * version 2 of the License, or (at your option) any later version.
|
10 | 54936004 | bellard | *
|
11 | 54936004 | bellard | * This library is distributed in the hope that it will be useful,
|
12 | 54936004 | bellard | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 | 54936004 | bellard | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
14 | 54936004 | bellard | * Lesser General Public License for more details.
|
15 | 54936004 | bellard | *
|
16 | 54936004 | bellard | * You should have received a copy of the GNU Lesser General Public
|
17 | 54936004 | bellard | * License along with this library; if not, write to the Free Software
|
18 | 54936004 | bellard | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
19 | 54936004 | bellard | */
|
20 | 67b915a5 | bellard | #include "config.h" |
21 | d5a8f07c | bellard | #ifdef _WIN32
|
22 | d5a8f07c | bellard | #include <windows.h> |
23 | d5a8f07c | bellard | #else
|
24 | a98d49b1 | bellard | #include <sys/types.h> |
25 | d5a8f07c | bellard | #include <sys/mman.h> |
26 | d5a8f07c | bellard | #endif
|
27 | 54936004 | bellard | #include <stdlib.h> |
28 | 54936004 | bellard | #include <stdio.h> |
29 | 54936004 | bellard | #include <stdarg.h> |
30 | 54936004 | bellard | #include <string.h> |
31 | 54936004 | bellard | #include <errno.h> |
32 | 54936004 | bellard | #include <unistd.h> |
33 | 54936004 | bellard | #include <inttypes.h> |
34 | 54936004 | bellard | |
35 | 6180a181 | bellard | #include "cpu.h" |
36 | 6180a181 | bellard | #include "exec-all.h" |
37 | 54936004 | bellard | |
38 | fd6ce8f6 | bellard | //#define DEBUG_TB_INVALIDATE
|
39 | 66e85a21 | bellard | //#define DEBUG_FLUSH
|
40 | 9fa3e853 | bellard | //#define DEBUG_TLB
|
41 | fd6ce8f6 | bellard | |
42 | fd6ce8f6 | bellard | /* make various TB consistency checks */
|
43 | fd6ce8f6 | bellard | //#define DEBUG_TB_CHECK
|
44 | 98857888 | bellard | //#define DEBUG_TLB_CHECK
|
45 | fd6ce8f6 | bellard | |
46 | fd6ce8f6 | bellard | /* threshold to flush the translated code buffer */
|
47 | fd6ce8f6 | bellard | #define CODE_GEN_BUFFER_MAX_SIZE (CODE_GEN_BUFFER_SIZE - CODE_GEN_MAX_SIZE)
|
48 | fd6ce8f6 | bellard | |
49 | 9fa3e853 | bellard | #define SMC_BITMAP_USE_THRESHOLD 10 |
50 | 9fa3e853 | bellard | |
51 | 9fa3e853 | bellard | #define MMAP_AREA_START 0x00000000 |
52 | 9fa3e853 | bellard | #define MMAP_AREA_END 0xa8000000 |
53 | fd6ce8f6 | bellard | |
54 | fd6ce8f6 | bellard | TranslationBlock tbs[CODE_GEN_MAX_BLOCKS]; |
55 | fd6ce8f6 | bellard | TranslationBlock *tb_hash[CODE_GEN_HASH_SIZE]; |
56 | 9fa3e853 | bellard | TranslationBlock *tb_phys_hash[CODE_GEN_PHYS_HASH_SIZE]; |
57 | fd6ce8f6 | bellard | int nb_tbs;
|
58 | eb51d102 | bellard | /* any access to the tbs or the page table must use this lock */
|
59 | eb51d102 | bellard | spinlock_t tb_lock = SPIN_LOCK_UNLOCKED; |
60 | fd6ce8f6 | bellard | |
61 | fd6ce8f6 | bellard | uint8_t code_gen_buffer[CODE_GEN_BUFFER_SIZE]; |
62 | fd6ce8f6 | bellard | uint8_t *code_gen_ptr; |
63 | fd6ce8f6 | bellard | |
64 | 9fa3e853 | bellard | int phys_ram_size;
|
65 | 9fa3e853 | bellard | int phys_ram_fd;
|
66 | 9fa3e853 | bellard | uint8_t *phys_ram_base; |
67 | 1ccde1cb | bellard | uint8_t *phys_ram_dirty; |
68 | 9fa3e853 | bellard | |
69 | 54936004 | bellard | typedef struct PageDesc { |
70 | 92e873b9 | bellard | /* list of TBs intersecting this ram page */
|
71 | fd6ce8f6 | bellard | TranslationBlock *first_tb; |
72 | 9fa3e853 | bellard | /* in order to optimize self modifying code, we count the number
|
73 | 9fa3e853 | bellard | of lookups we do to a given page to use a bitmap */
|
74 | 9fa3e853 | bellard | unsigned int code_write_count; |
75 | 9fa3e853 | bellard | uint8_t *code_bitmap; |
76 | 9fa3e853 | bellard | #if defined(CONFIG_USER_ONLY)
|
77 | 9fa3e853 | bellard | unsigned long flags; |
78 | 9fa3e853 | bellard | #endif
|
79 | 54936004 | bellard | } PageDesc; |
80 | 54936004 | bellard | |
81 | 92e873b9 | bellard | typedef struct PhysPageDesc { |
82 | 92e873b9 | bellard | /* offset in host memory of the page + io_index in the low 12 bits */
|
83 | 92e873b9 | bellard | unsigned long phys_offset; |
84 | 92e873b9 | bellard | } PhysPageDesc; |
85 | 92e873b9 | bellard | |
86 | 9fa3e853 | bellard | typedef struct VirtPageDesc { |
87 | 9fa3e853 | bellard | /* physical address of code page. It is valid only if 'valid_tag'
|
88 | 9fa3e853 | bellard | matches 'virt_valid_tag' */
|
89 | 9fa3e853 | bellard | target_ulong phys_addr; |
90 | 9fa3e853 | bellard | unsigned int valid_tag; |
91 | 9fa3e853 | bellard | #if !defined(CONFIG_SOFTMMU)
|
92 | 9fa3e853 | bellard | /* original page access rights. It is valid only if 'valid_tag'
|
93 | 9fa3e853 | bellard | matches 'virt_valid_tag' */
|
94 | 9fa3e853 | bellard | unsigned int prot; |
95 | 9fa3e853 | bellard | #endif
|
96 | 9fa3e853 | bellard | } VirtPageDesc; |
97 | 9fa3e853 | bellard | |
98 | 54936004 | bellard | #define L2_BITS 10 |
99 | 54936004 | bellard | #define L1_BITS (32 - L2_BITS - TARGET_PAGE_BITS) |
100 | 54936004 | bellard | |
101 | 54936004 | bellard | #define L1_SIZE (1 << L1_BITS) |
102 | 54936004 | bellard | #define L2_SIZE (1 << L2_BITS) |
103 | 54936004 | bellard | |
104 | 33417e70 | bellard | static void io_mem_init(void); |
105 | fd6ce8f6 | bellard | |
106 | 83fb7adf | bellard | unsigned long qemu_real_host_page_size; |
107 | 83fb7adf | bellard | unsigned long qemu_host_page_bits; |
108 | 83fb7adf | bellard | unsigned long qemu_host_page_size; |
109 | 83fb7adf | bellard | unsigned long qemu_host_page_mask; |
110 | 54936004 | bellard | |
111 | 92e873b9 | bellard | /* XXX: for system emulation, it could just be an array */
|
112 | 54936004 | bellard | static PageDesc *l1_map[L1_SIZE];
|
113 | 92e873b9 | bellard | static PhysPageDesc *l1_phys_map[L1_SIZE];
|
114 | 54936004 | bellard | |
115 | 9fa3e853 | bellard | #if !defined(CONFIG_USER_ONLY)
|
116 | 9fa3e853 | bellard | static VirtPageDesc *l1_virt_map[L1_SIZE];
|
117 | 9fa3e853 | bellard | static unsigned int virt_valid_tag; |
118 | 9fa3e853 | bellard | #endif
|
119 | 9fa3e853 | bellard | |
120 | 33417e70 | bellard | /* io memory support */
|
121 | 33417e70 | bellard | CPUWriteMemoryFunc *io_mem_write[IO_MEM_NB_ENTRIES][4];
|
122 | 33417e70 | bellard | CPUReadMemoryFunc *io_mem_read[IO_MEM_NB_ENTRIES][4];
|
123 | a4193c8a | bellard | void *io_mem_opaque[IO_MEM_NB_ENTRIES];
|
124 | 33417e70 | bellard | static int io_mem_nb; |
125 | 33417e70 | bellard | |
126 | 34865134 | bellard | /* log support */
|
127 | 34865134 | bellard | char *logfilename = "/tmp/qemu.log"; |
128 | 34865134 | bellard | FILE *logfile; |
129 | 34865134 | bellard | int loglevel;
|
130 | 34865134 | bellard | |
131 | b346ff46 | bellard | static void page_init(void) |
132 | 54936004 | bellard | { |
133 | 83fb7adf | bellard | /* NOTE: we can always suppose that qemu_host_page_size >=
|
134 | 54936004 | bellard | TARGET_PAGE_SIZE */
|
135 | 67b915a5 | bellard | #ifdef _WIN32
|
136 | d5a8f07c | bellard | { |
137 | d5a8f07c | bellard | SYSTEM_INFO system_info; |
138 | d5a8f07c | bellard | DWORD old_protect; |
139 | d5a8f07c | bellard | |
140 | d5a8f07c | bellard | GetSystemInfo(&system_info); |
141 | d5a8f07c | bellard | qemu_real_host_page_size = system_info.dwPageSize; |
142 | d5a8f07c | bellard | |
143 | d5a8f07c | bellard | VirtualProtect(code_gen_buffer, sizeof(code_gen_buffer),
|
144 | d5a8f07c | bellard | PAGE_EXECUTE_READWRITE, &old_protect); |
145 | d5a8f07c | bellard | } |
146 | 67b915a5 | bellard | #else
|
147 | 83fb7adf | bellard | qemu_real_host_page_size = getpagesize(); |
148 | d5a8f07c | bellard | { |
149 | d5a8f07c | bellard | unsigned long start, end; |
150 | d5a8f07c | bellard | |
151 | d5a8f07c | bellard | start = (unsigned long)code_gen_buffer; |
152 | d5a8f07c | bellard | start &= ~(qemu_real_host_page_size - 1);
|
153 | d5a8f07c | bellard | |
154 | d5a8f07c | bellard | end = (unsigned long)code_gen_buffer + sizeof(code_gen_buffer); |
155 | d5a8f07c | bellard | end += qemu_real_host_page_size - 1;
|
156 | d5a8f07c | bellard | end &= ~(qemu_real_host_page_size - 1);
|
157 | d5a8f07c | bellard | |
158 | d5a8f07c | bellard | mprotect((void *)start, end - start,
|
159 | d5a8f07c | bellard | PROT_READ | PROT_WRITE | PROT_EXEC); |
160 | d5a8f07c | bellard | } |
161 | 67b915a5 | bellard | #endif
|
162 | d5a8f07c | bellard | |
163 | 83fb7adf | bellard | if (qemu_host_page_size == 0) |
164 | 83fb7adf | bellard | qemu_host_page_size = qemu_real_host_page_size; |
165 | 83fb7adf | bellard | if (qemu_host_page_size < TARGET_PAGE_SIZE)
|
166 | 83fb7adf | bellard | qemu_host_page_size = TARGET_PAGE_SIZE; |
167 | 83fb7adf | bellard | qemu_host_page_bits = 0;
|
168 | 83fb7adf | bellard | while ((1 << qemu_host_page_bits) < qemu_host_page_size) |
169 | 83fb7adf | bellard | qemu_host_page_bits++; |
170 | 83fb7adf | bellard | qemu_host_page_mask = ~(qemu_host_page_size - 1);
|
171 | 9fa3e853 | bellard | #if !defined(CONFIG_USER_ONLY)
|
172 | 9fa3e853 | bellard | virt_valid_tag = 1;
|
173 | 9fa3e853 | bellard | #endif
|
174 | 54936004 | bellard | } |
175 | 54936004 | bellard | |
176 | fd6ce8f6 | bellard | static inline PageDesc *page_find_alloc(unsigned int index) |
177 | 54936004 | bellard | { |
178 | 54936004 | bellard | PageDesc **lp, *p; |
179 | 54936004 | bellard | |
180 | 54936004 | bellard | lp = &l1_map[index >> L2_BITS]; |
181 | 54936004 | bellard | p = *lp; |
182 | 54936004 | bellard | if (!p) {
|
183 | 54936004 | bellard | /* allocate if not found */
|
184 | 59817ccb | bellard | p = qemu_malloc(sizeof(PageDesc) * L2_SIZE);
|
185 | fd6ce8f6 | bellard | memset(p, 0, sizeof(PageDesc) * L2_SIZE); |
186 | 54936004 | bellard | *lp = p; |
187 | 54936004 | bellard | } |
188 | 54936004 | bellard | return p + (index & (L2_SIZE - 1)); |
189 | 54936004 | bellard | } |
190 | 54936004 | bellard | |
191 | fd6ce8f6 | bellard | static inline PageDesc *page_find(unsigned int index) |
192 | 54936004 | bellard | { |
193 | 54936004 | bellard | PageDesc *p; |
194 | 54936004 | bellard | |
195 | 54936004 | bellard | p = l1_map[index >> L2_BITS]; |
196 | 54936004 | bellard | if (!p)
|
197 | 54936004 | bellard | return 0; |
198 | fd6ce8f6 | bellard | return p + (index & (L2_SIZE - 1)); |
199 | fd6ce8f6 | bellard | } |
200 | fd6ce8f6 | bellard | |
201 | 92e873b9 | bellard | static inline PhysPageDesc *phys_page_find_alloc(unsigned int index) |
202 | 92e873b9 | bellard | { |
203 | 92e873b9 | bellard | PhysPageDesc **lp, *p; |
204 | 92e873b9 | bellard | |
205 | 92e873b9 | bellard | lp = &l1_phys_map[index >> L2_BITS]; |
206 | 92e873b9 | bellard | p = *lp; |
207 | 92e873b9 | bellard | if (!p) {
|
208 | 92e873b9 | bellard | /* allocate if not found */
|
209 | 92e873b9 | bellard | p = qemu_malloc(sizeof(PhysPageDesc) * L2_SIZE);
|
210 | 92e873b9 | bellard | memset(p, 0, sizeof(PhysPageDesc) * L2_SIZE); |
211 | 92e873b9 | bellard | *lp = p; |
212 | 92e873b9 | bellard | } |
213 | 92e873b9 | bellard | return p + (index & (L2_SIZE - 1)); |
214 | 92e873b9 | bellard | } |
215 | 92e873b9 | bellard | |
216 | 92e873b9 | bellard | static inline PhysPageDesc *phys_page_find(unsigned int index) |
217 | 92e873b9 | bellard | { |
218 | 92e873b9 | bellard | PhysPageDesc *p; |
219 | 92e873b9 | bellard | |
220 | 92e873b9 | bellard | p = l1_phys_map[index >> L2_BITS]; |
221 | 92e873b9 | bellard | if (!p)
|
222 | 92e873b9 | bellard | return 0; |
223 | 92e873b9 | bellard | return p + (index & (L2_SIZE - 1)); |
224 | 92e873b9 | bellard | } |
225 | 92e873b9 | bellard | |
226 | 9fa3e853 | bellard | #if !defined(CONFIG_USER_ONLY)
|
227 | 4f2ac237 | bellard | static void tlb_protect_code(CPUState *env, target_ulong addr); |
228 | 4f2ac237 | bellard | static void tlb_unprotect_code_phys(CPUState *env, unsigned long phys_addr, target_ulong vaddr); |
229 | 9fa3e853 | bellard | |
230 | 9fa3e853 | bellard | static inline VirtPageDesc *virt_page_find_alloc(unsigned int index) |
231 | fd6ce8f6 | bellard | { |
232 | 9fa3e853 | bellard | VirtPageDesc **lp, *p; |
233 | fd6ce8f6 | bellard | |
234 | c27004ec | bellard | /* XXX: should not truncate for 64 bit addresses */
|
235 | c27004ec | bellard | #if TARGET_LONG_BITS > 32 |
236 | c27004ec | bellard | index &= (L1_SIZE - 1);
|
237 | c27004ec | bellard | #endif
|
238 | 9fa3e853 | bellard | lp = &l1_virt_map[index >> L2_BITS]; |
239 | 9fa3e853 | bellard | p = *lp; |
240 | 9fa3e853 | bellard | if (!p) {
|
241 | 9fa3e853 | bellard | /* allocate if not found */
|
242 | 59817ccb | bellard | p = qemu_malloc(sizeof(VirtPageDesc) * L2_SIZE);
|
243 | 9fa3e853 | bellard | memset(p, 0, sizeof(VirtPageDesc) * L2_SIZE); |
244 | 9fa3e853 | bellard | *lp = p; |
245 | 9fa3e853 | bellard | } |
246 | 9fa3e853 | bellard | return p + (index & (L2_SIZE - 1)); |
247 | 9fa3e853 | bellard | } |
248 | 9fa3e853 | bellard | |
249 | 9fa3e853 | bellard | static inline VirtPageDesc *virt_page_find(unsigned int index) |
250 | 9fa3e853 | bellard | { |
251 | 9fa3e853 | bellard | VirtPageDesc *p; |
252 | 9fa3e853 | bellard | |
253 | 9fa3e853 | bellard | p = l1_virt_map[index >> L2_BITS]; |
254 | fd6ce8f6 | bellard | if (!p)
|
255 | fd6ce8f6 | bellard | return 0; |
256 | 9fa3e853 | bellard | return p + (index & (L2_SIZE - 1)); |
257 | 54936004 | bellard | } |
258 | 54936004 | bellard | |
259 | 9fa3e853 | bellard | static void virt_page_flush(void) |
260 | 54936004 | bellard | { |
261 | 9fa3e853 | bellard | int i, j;
|
262 | 9fa3e853 | bellard | VirtPageDesc *p; |
263 | 9fa3e853 | bellard | |
264 | 9fa3e853 | bellard | virt_valid_tag++; |
265 | 9fa3e853 | bellard | |
266 | 9fa3e853 | bellard | if (virt_valid_tag == 0) { |
267 | 9fa3e853 | bellard | virt_valid_tag = 1;
|
268 | 9fa3e853 | bellard | for(i = 0; i < L1_SIZE; i++) { |
269 | 9fa3e853 | bellard | p = l1_virt_map[i]; |
270 | 9fa3e853 | bellard | if (p) {
|
271 | 9fa3e853 | bellard | for(j = 0; j < L2_SIZE; j++) |
272 | 9fa3e853 | bellard | p[j].valid_tag = 0;
|
273 | 9fa3e853 | bellard | } |
274 | fd6ce8f6 | bellard | } |
275 | 54936004 | bellard | } |
276 | 54936004 | bellard | } |
277 | 9fa3e853 | bellard | #else
|
278 | 9fa3e853 | bellard | static void virt_page_flush(void) |
279 | 9fa3e853 | bellard | { |
280 | 9fa3e853 | bellard | } |
281 | 9fa3e853 | bellard | #endif
|
282 | fd6ce8f6 | bellard | |
283 | b346ff46 | bellard | void cpu_exec_init(void) |
284 | fd6ce8f6 | bellard | { |
285 | fd6ce8f6 | bellard | if (!code_gen_ptr) {
|
286 | fd6ce8f6 | bellard | code_gen_ptr = code_gen_buffer; |
287 | b346ff46 | bellard | page_init(); |
288 | 33417e70 | bellard | io_mem_init(); |
289 | fd6ce8f6 | bellard | } |
290 | fd6ce8f6 | bellard | } |
291 | fd6ce8f6 | bellard | |
292 | 9fa3e853 | bellard | static inline void invalidate_page_bitmap(PageDesc *p) |
293 | 9fa3e853 | bellard | { |
294 | 9fa3e853 | bellard | if (p->code_bitmap) {
|
295 | 59817ccb | bellard | qemu_free(p->code_bitmap); |
296 | 9fa3e853 | bellard | p->code_bitmap = NULL;
|
297 | 9fa3e853 | bellard | } |
298 | 9fa3e853 | bellard | p->code_write_count = 0;
|
299 | 9fa3e853 | bellard | } |
300 | 9fa3e853 | bellard | |
301 | fd6ce8f6 | bellard | /* set to NULL all the 'first_tb' fields in all PageDescs */
|
302 | fd6ce8f6 | bellard | static void page_flush_tb(void) |
303 | fd6ce8f6 | bellard | { |
304 | fd6ce8f6 | bellard | int i, j;
|
305 | fd6ce8f6 | bellard | PageDesc *p; |
306 | fd6ce8f6 | bellard | |
307 | fd6ce8f6 | bellard | for(i = 0; i < L1_SIZE; i++) { |
308 | fd6ce8f6 | bellard | p = l1_map[i]; |
309 | fd6ce8f6 | bellard | if (p) {
|
310 | 9fa3e853 | bellard | for(j = 0; j < L2_SIZE; j++) { |
311 | 9fa3e853 | bellard | p->first_tb = NULL;
|
312 | 9fa3e853 | bellard | invalidate_page_bitmap(p); |
313 | 9fa3e853 | bellard | p++; |
314 | 9fa3e853 | bellard | } |
315 | fd6ce8f6 | bellard | } |
316 | fd6ce8f6 | bellard | } |
317 | fd6ce8f6 | bellard | } |
318 | fd6ce8f6 | bellard | |
319 | fd6ce8f6 | bellard | /* flush all the translation blocks */
|
320 | d4e8164f | bellard | /* XXX: tb_flush is currently not thread safe */
|
321 | 0124311e | bellard | void tb_flush(CPUState *env)
|
322 | fd6ce8f6 | bellard | { |
323 | 0124311e | bellard | #if defined(DEBUG_FLUSH)
|
324 | fd6ce8f6 | bellard | printf("qemu: flush code_size=%d nb_tbs=%d avg_tb_size=%d\n",
|
325 | fd6ce8f6 | bellard | code_gen_ptr - code_gen_buffer, |
326 | fd6ce8f6 | bellard | nb_tbs, |
327 | 0124311e | bellard | nb_tbs > 0 ? (code_gen_ptr - code_gen_buffer) / nb_tbs : 0); |
328 | fd6ce8f6 | bellard | #endif
|
329 | fd6ce8f6 | bellard | nb_tbs = 0;
|
330 | 8a8a608f | bellard | memset (tb_hash, 0, CODE_GEN_HASH_SIZE * sizeof (void *)); |
331 | 9fa3e853 | bellard | virt_page_flush(); |
332 | 9fa3e853 | bellard | |
333 | 8a8a608f | bellard | memset (tb_phys_hash, 0, CODE_GEN_PHYS_HASH_SIZE * sizeof (void *)); |
334 | fd6ce8f6 | bellard | page_flush_tb(); |
335 | 9fa3e853 | bellard | |
336 | fd6ce8f6 | bellard | code_gen_ptr = code_gen_buffer; |
337 | d4e8164f | bellard | /* XXX: flush processor icache at this point if cache flush is
|
338 | d4e8164f | bellard | expensive */
|
339 | fd6ce8f6 | bellard | } |
340 | fd6ce8f6 | bellard | |
341 | fd6ce8f6 | bellard | #ifdef DEBUG_TB_CHECK
|
342 | fd6ce8f6 | bellard | |
343 | fd6ce8f6 | bellard | static void tb_invalidate_check(unsigned long address) |
344 | fd6ce8f6 | bellard | { |
345 | fd6ce8f6 | bellard | TranslationBlock *tb; |
346 | fd6ce8f6 | bellard | int i;
|
347 | fd6ce8f6 | bellard | address &= TARGET_PAGE_MASK; |
348 | fd6ce8f6 | bellard | for(i = 0;i < CODE_GEN_HASH_SIZE; i++) { |
349 | fd6ce8f6 | bellard | for(tb = tb_hash[i]; tb != NULL; tb = tb->hash_next) { |
350 | fd6ce8f6 | bellard | if (!(address + TARGET_PAGE_SIZE <= tb->pc ||
|
351 | fd6ce8f6 | bellard | address >= tb->pc + tb->size)) { |
352 | fd6ce8f6 | bellard | printf("ERROR invalidate: address=%08lx PC=%08lx size=%04x\n",
|
353 | fd6ce8f6 | bellard | address, tb->pc, tb->size); |
354 | fd6ce8f6 | bellard | } |
355 | fd6ce8f6 | bellard | } |
356 | fd6ce8f6 | bellard | } |
357 | fd6ce8f6 | bellard | } |
358 | fd6ce8f6 | bellard | |
359 | fd6ce8f6 | bellard | /* verify that all the pages have correct rights for code */
|
360 | fd6ce8f6 | bellard | static void tb_page_check(void) |
361 | fd6ce8f6 | bellard | { |
362 | fd6ce8f6 | bellard | TranslationBlock *tb; |
363 | fd6ce8f6 | bellard | int i, flags1, flags2;
|
364 | fd6ce8f6 | bellard | |
365 | fd6ce8f6 | bellard | for(i = 0;i < CODE_GEN_HASH_SIZE; i++) { |
366 | fd6ce8f6 | bellard | for(tb = tb_hash[i]; tb != NULL; tb = tb->hash_next) { |
367 | fd6ce8f6 | bellard | flags1 = page_get_flags(tb->pc); |
368 | fd6ce8f6 | bellard | flags2 = page_get_flags(tb->pc + tb->size - 1);
|
369 | fd6ce8f6 | bellard | if ((flags1 & PAGE_WRITE) || (flags2 & PAGE_WRITE)) {
|
370 | fd6ce8f6 | bellard | printf("ERROR page flags: PC=%08lx size=%04x f1=%x f2=%x\n",
|
371 | fd6ce8f6 | bellard | tb->pc, tb->size, flags1, flags2); |
372 | fd6ce8f6 | bellard | } |
373 | fd6ce8f6 | bellard | } |
374 | fd6ce8f6 | bellard | } |
375 | fd6ce8f6 | bellard | } |
376 | fd6ce8f6 | bellard | |
377 | d4e8164f | bellard | void tb_jmp_check(TranslationBlock *tb)
|
378 | d4e8164f | bellard | { |
379 | d4e8164f | bellard | TranslationBlock *tb1; |
380 | d4e8164f | bellard | unsigned int n1; |
381 | d4e8164f | bellard | |
382 | d4e8164f | bellard | /* suppress any remaining jumps to this TB */
|
383 | d4e8164f | bellard | tb1 = tb->jmp_first; |
384 | d4e8164f | bellard | for(;;) {
|
385 | d4e8164f | bellard | n1 = (long)tb1 & 3; |
386 | d4e8164f | bellard | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
387 | d4e8164f | bellard | if (n1 == 2) |
388 | d4e8164f | bellard | break;
|
389 | d4e8164f | bellard | tb1 = tb1->jmp_next[n1]; |
390 | d4e8164f | bellard | } |
391 | d4e8164f | bellard | /* check end of list */
|
392 | d4e8164f | bellard | if (tb1 != tb) {
|
393 | d4e8164f | bellard | printf("ERROR: jmp_list from 0x%08lx\n", (long)tb); |
394 | d4e8164f | bellard | } |
395 | d4e8164f | bellard | } |
396 | d4e8164f | bellard | |
397 | fd6ce8f6 | bellard | #endif
|
398 | fd6ce8f6 | bellard | |
399 | fd6ce8f6 | bellard | /* invalidate one TB */
|
400 | fd6ce8f6 | bellard | static inline void tb_remove(TranslationBlock **ptb, TranslationBlock *tb, |
401 | fd6ce8f6 | bellard | int next_offset)
|
402 | fd6ce8f6 | bellard | { |
403 | fd6ce8f6 | bellard | TranslationBlock *tb1; |
404 | fd6ce8f6 | bellard | for(;;) {
|
405 | fd6ce8f6 | bellard | tb1 = *ptb; |
406 | fd6ce8f6 | bellard | if (tb1 == tb) {
|
407 | fd6ce8f6 | bellard | *ptb = *(TranslationBlock **)((char *)tb1 + next_offset);
|
408 | fd6ce8f6 | bellard | break;
|
409 | fd6ce8f6 | bellard | } |
410 | fd6ce8f6 | bellard | ptb = (TranslationBlock **)((char *)tb1 + next_offset);
|
411 | fd6ce8f6 | bellard | } |
412 | fd6ce8f6 | bellard | } |
413 | fd6ce8f6 | bellard | |
414 | 9fa3e853 | bellard | static inline void tb_page_remove(TranslationBlock **ptb, TranslationBlock *tb) |
415 | 9fa3e853 | bellard | { |
416 | 9fa3e853 | bellard | TranslationBlock *tb1; |
417 | 9fa3e853 | bellard | unsigned int n1; |
418 | 9fa3e853 | bellard | |
419 | 9fa3e853 | bellard | for(;;) {
|
420 | 9fa3e853 | bellard | tb1 = *ptb; |
421 | 9fa3e853 | bellard | n1 = (long)tb1 & 3; |
422 | 9fa3e853 | bellard | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
423 | 9fa3e853 | bellard | if (tb1 == tb) {
|
424 | 9fa3e853 | bellard | *ptb = tb1->page_next[n1]; |
425 | 9fa3e853 | bellard | break;
|
426 | 9fa3e853 | bellard | } |
427 | 9fa3e853 | bellard | ptb = &tb1->page_next[n1]; |
428 | 9fa3e853 | bellard | } |
429 | 9fa3e853 | bellard | } |
430 | 9fa3e853 | bellard | |
431 | d4e8164f | bellard | static inline void tb_jmp_remove(TranslationBlock *tb, int n) |
432 | d4e8164f | bellard | { |
433 | d4e8164f | bellard | TranslationBlock *tb1, **ptb; |
434 | d4e8164f | bellard | unsigned int n1; |
435 | d4e8164f | bellard | |
436 | d4e8164f | bellard | ptb = &tb->jmp_next[n]; |
437 | d4e8164f | bellard | tb1 = *ptb; |
438 | d4e8164f | bellard | if (tb1) {
|
439 | d4e8164f | bellard | /* find tb(n) in circular list */
|
440 | d4e8164f | bellard | for(;;) {
|
441 | d4e8164f | bellard | tb1 = *ptb; |
442 | d4e8164f | bellard | n1 = (long)tb1 & 3; |
443 | d4e8164f | bellard | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
444 | d4e8164f | bellard | if (n1 == n && tb1 == tb)
|
445 | d4e8164f | bellard | break;
|
446 | d4e8164f | bellard | if (n1 == 2) { |
447 | d4e8164f | bellard | ptb = &tb1->jmp_first; |
448 | d4e8164f | bellard | } else {
|
449 | d4e8164f | bellard | ptb = &tb1->jmp_next[n1]; |
450 | d4e8164f | bellard | } |
451 | d4e8164f | bellard | } |
452 | d4e8164f | bellard | /* now we can suppress tb(n) from the list */
|
453 | d4e8164f | bellard | *ptb = tb->jmp_next[n]; |
454 | d4e8164f | bellard | |
455 | d4e8164f | bellard | tb->jmp_next[n] = NULL;
|
456 | d4e8164f | bellard | } |
457 | d4e8164f | bellard | } |
458 | d4e8164f | bellard | |
459 | d4e8164f | bellard | /* reset the jump entry 'n' of a TB so that it is not chained to
|
460 | d4e8164f | bellard | another TB */
|
461 | d4e8164f | bellard | static inline void tb_reset_jump(TranslationBlock *tb, int n) |
462 | d4e8164f | bellard | { |
463 | d4e8164f | bellard | tb_set_jmp_target(tb, n, (unsigned long)(tb->tc_ptr + tb->tb_next_offset[n])); |
464 | d4e8164f | bellard | } |
465 | d4e8164f | bellard | |
466 | 9fa3e853 | bellard | static inline void tb_invalidate(TranslationBlock *tb) |
467 | fd6ce8f6 | bellard | { |
468 | d4e8164f | bellard | unsigned int h, n1; |
469 | 9fa3e853 | bellard | TranslationBlock *tb1, *tb2, **ptb; |
470 | d4e8164f | bellard | |
471 | 36bdbe54 | bellard | tb_invalidated_flag = 1;
|
472 | 59817ccb | bellard | |
473 | fd6ce8f6 | bellard | /* remove the TB from the hash list */
|
474 | fd6ce8f6 | bellard | h = tb_hash_func(tb->pc); |
475 | 9fa3e853 | bellard | ptb = &tb_hash[h]; |
476 | 9fa3e853 | bellard | for(;;) {
|
477 | 9fa3e853 | bellard | tb1 = *ptb; |
478 | 9fa3e853 | bellard | /* NOTE: the TB is not necessarily linked in the hash. It
|
479 | 9fa3e853 | bellard | indicates that it is not currently used */
|
480 | 9fa3e853 | bellard | if (tb1 == NULL) |
481 | 9fa3e853 | bellard | return;
|
482 | 9fa3e853 | bellard | if (tb1 == tb) {
|
483 | 9fa3e853 | bellard | *ptb = tb1->hash_next; |
484 | 9fa3e853 | bellard | break;
|
485 | 9fa3e853 | bellard | } |
486 | 9fa3e853 | bellard | ptb = &tb1->hash_next; |
487 | fd6ce8f6 | bellard | } |
488 | d4e8164f | bellard | |
489 | d4e8164f | bellard | /* suppress this TB from the two jump lists */
|
490 | d4e8164f | bellard | tb_jmp_remove(tb, 0);
|
491 | d4e8164f | bellard | tb_jmp_remove(tb, 1);
|
492 | d4e8164f | bellard | |
493 | d4e8164f | bellard | /* suppress any remaining jumps to this TB */
|
494 | d4e8164f | bellard | tb1 = tb->jmp_first; |
495 | d4e8164f | bellard | for(;;) {
|
496 | d4e8164f | bellard | n1 = (long)tb1 & 3; |
497 | d4e8164f | bellard | if (n1 == 2) |
498 | d4e8164f | bellard | break;
|
499 | d4e8164f | bellard | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
500 | d4e8164f | bellard | tb2 = tb1->jmp_next[n1]; |
501 | d4e8164f | bellard | tb_reset_jump(tb1, n1); |
502 | d4e8164f | bellard | tb1->jmp_next[n1] = NULL;
|
503 | d4e8164f | bellard | tb1 = tb2; |
504 | d4e8164f | bellard | } |
505 | d4e8164f | bellard | tb->jmp_first = (TranslationBlock *)((long)tb | 2); /* fail safe */ |
506 | fd6ce8f6 | bellard | } |
507 | fd6ce8f6 | bellard | |
508 | 9fa3e853 | bellard | static inline void tb_phys_invalidate(TranslationBlock *tb, unsigned int page_addr) |
509 | fd6ce8f6 | bellard | { |
510 | fd6ce8f6 | bellard | PageDesc *p; |
511 | 9fa3e853 | bellard | unsigned int h; |
512 | 9fa3e853 | bellard | target_ulong phys_pc; |
513 | 9fa3e853 | bellard | |
514 | 9fa3e853 | bellard | /* remove the TB from the hash list */
|
515 | 9fa3e853 | bellard | phys_pc = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK);
|
516 | 9fa3e853 | bellard | h = tb_phys_hash_func(phys_pc); |
517 | 9fa3e853 | bellard | tb_remove(&tb_phys_hash[h], tb, |
518 | 9fa3e853 | bellard | offsetof(TranslationBlock, phys_hash_next)); |
519 | 9fa3e853 | bellard | |
520 | 9fa3e853 | bellard | /* remove the TB from the page list */
|
521 | 9fa3e853 | bellard | if (tb->page_addr[0] != page_addr) { |
522 | 9fa3e853 | bellard | p = page_find(tb->page_addr[0] >> TARGET_PAGE_BITS);
|
523 | 9fa3e853 | bellard | tb_page_remove(&p->first_tb, tb); |
524 | 9fa3e853 | bellard | invalidate_page_bitmap(p); |
525 | 9fa3e853 | bellard | } |
526 | 9fa3e853 | bellard | if (tb->page_addr[1] != -1 && tb->page_addr[1] != page_addr) { |
527 | 9fa3e853 | bellard | p = page_find(tb->page_addr[1] >> TARGET_PAGE_BITS);
|
528 | 9fa3e853 | bellard | tb_page_remove(&p->first_tb, tb); |
529 | 9fa3e853 | bellard | invalidate_page_bitmap(p); |
530 | 9fa3e853 | bellard | } |
531 | 9fa3e853 | bellard | |
532 | 9fa3e853 | bellard | tb_invalidate(tb); |
533 | 9fa3e853 | bellard | } |
534 | 9fa3e853 | bellard | |
535 | 9fa3e853 | bellard | static inline void set_bits(uint8_t *tab, int start, int len) |
536 | 9fa3e853 | bellard | { |
537 | 9fa3e853 | bellard | int end, mask, end1;
|
538 | 9fa3e853 | bellard | |
539 | 9fa3e853 | bellard | end = start + len; |
540 | 9fa3e853 | bellard | tab += start >> 3;
|
541 | 9fa3e853 | bellard | mask = 0xff << (start & 7); |
542 | 9fa3e853 | bellard | if ((start & ~7) == (end & ~7)) { |
543 | 9fa3e853 | bellard | if (start < end) {
|
544 | 9fa3e853 | bellard | mask &= ~(0xff << (end & 7)); |
545 | 9fa3e853 | bellard | *tab |= mask; |
546 | 9fa3e853 | bellard | } |
547 | 9fa3e853 | bellard | } else {
|
548 | 9fa3e853 | bellard | *tab++ |= mask; |
549 | 9fa3e853 | bellard | start = (start + 8) & ~7; |
550 | 9fa3e853 | bellard | end1 = end & ~7;
|
551 | 9fa3e853 | bellard | while (start < end1) {
|
552 | 9fa3e853 | bellard | *tab++ = 0xff;
|
553 | 9fa3e853 | bellard | start += 8;
|
554 | 9fa3e853 | bellard | } |
555 | 9fa3e853 | bellard | if (start < end) {
|
556 | 9fa3e853 | bellard | mask = ~(0xff << (end & 7)); |
557 | 9fa3e853 | bellard | *tab |= mask; |
558 | 9fa3e853 | bellard | } |
559 | 9fa3e853 | bellard | } |
560 | 9fa3e853 | bellard | } |
561 | 9fa3e853 | bellard | |
562 | 9fa3e853 | bellard | static void build_page_bitmap(PageDesc *p) |
563 | 9fa3e853 | bellard | { |
564 | 9fa3e853 | bellard | int n, tb_start, tb_end;
|
565 | 9fa3e853 | bellard | TranslationBlock *tb; |
566 | 9fa3e853 | bellard | |
567 | 59817ccb | bellard | p->code_bitmap = qemu_malloc(TARGET_PAGE_SIZE / 8);
|
568 | 9fa3e853 | bellard | if (!p->code_bitmap)
|
569 | 9fa3e853 | bellard | return;
|
570 | 9fa3e853 | bellard | memset(p->code_bitmap, 0, TARGET_PAGE_SIZE / 8); |
571 | 9fa3e853 | bellard | |
572 | 9fa3e853 | bellard | tb = p->first_tb; |
573 | 9fa3e853 | bellard | while (tb != NULL) { |
574 | 9fa3e853 | bellard | n = (long)tb & 3; |
575 | 9fa3e853 | bellard | tb = (TranslationBlock *)((long)tb & ~3); |
576 | 9fa3e853 | bellard | /* NOTE: this is subtle as a TB may span two physical pages */
|
577 | 9fa3e853 | bellard | if (n == 0) { |
578 | 9fa3e853 | bellard | /* NOTE: tb_end may be after the end of the page, but
|
579 | 9fa3e853 | bellard | it is not a problem */
|
580 | 9fa3e853 | bellard | tb_start = tb->pc & ~TARGET_PAGE_MASK; |
581 | 9fa3e853 | bellard | tb_end = tb_start + tb->size; |
582 | 9fa3e853 | bellard | if (tb_end > TARGET_PAGE_SIZE)
|
583 | 9fa3e853 | bellard | tb_end = TARGET_PAGE_SIZE; |
584 | 9fa3e853 | bellard | } else {
|
585 | 9fa3e853 | bellard | tb_start = 0;
|
586 | 9fa3e853 | bellard | tb_end = ((tb->pc + tb->size) & ~TARGET_PAGE_MASK); |
587 | 9fa3e853 | bellard | } |
588 | 9fa3e853 | bellard | set_bits(p->code_bitmap, tb_start, tb_end - tb_start); |
589 | 9fa3e853 | bellard | tb = tb->page_next[n]; |
590 | 9fa3e853 | bellard | } |
591 | 9fa3e853 | bellard | } |
592 | 9fa3e853 | bellard | |
593 | d720b93d | bellard | #ifdef TARGET_HAS_PRECISE_SMC
|
594 | d720b93d | bellard | |
595 | d720b93d | bellard | static void tb_gen_code(CPUState *env, |
596 | d720b93d | bellard | target_ulong pc, target_ulong cs_base, int flags,
|
597 | d720b93d | bellard | int cflags)
|
598 | d720b93d | bellard | { |
599 | d720b93d | bellard | TranslationBlock *tb; |
600 | d720b93d | bellard | uint8_t *tc_ptr; |
601 | d720b93d | bellard | target_ulong phys_pc, phys_page2, virt_page2; |
602 | d720b93d | bellard | int code_gen_size;
|
603 | d720b93d | bellard | |
604 | c27004ec | bellard | phys_pc = get_phys_addr_code(env, pc); |
605 | c27004ec | bellard | tb = tb_alloc(pc); |
606 | d720b93d | bellard | if (!tb) {
|
607 | d720b93d | bellard | /* flush must be done */
|
608 | d720b93d | bellard | tb_flush(env); |
609 | d720b93d | bellard | /* cannot fail at this point */
|
610 | c27004ec | bellard | tb = tb_alloc(pc); |
611 | d720b93d | bellard | } |
612 | d720b93d | bellard | tc_ptr = code_gen_ptr; |
613 | d720b93d | bellard | tb->tc_ptr = tc_ptr; |
614 | d720b93d | bellard | tb->cs_base = cs_base; |
615 | d720b93d | bellard | tb->flags = flags; |
616 | d720b93d | bellard | tb->cflags = cflags; |
617 | d720b93d | bellard | cpu_gen_code(env, tb, CODE_GEN_MAX_SIZE, &code_gen_size); |
618 | d720b93d | bellard | code_gen_ptr = (void *)(((unsigned long)code_gen_ptr + code_gen_size + CODE_GEN_ALIGN - 1) & ~(CODE_GEN_ALIGN - 1)); |
619 | d720b93d | bellard | |
620 | d720b93d | bellard | /* check next page if needed */
|
621 | c27004ec | bellard | virt_page2 = (pc + tb->size - 1) & TARGET_PAGE_MASK;
|
622 | d720b93d | bellard | phys_page2 = -1;
|
623 | c27004ec | bellard | if ((pc & TARGET_PAGE_MASK) != virt_page2) {
|
624 | d720b93d | bellard | phys_page2 = get_phys_addr_code(env, virt_page2); |
625 | d720b93d | bellard | } |
626 | d720b93d | bellard | tb_link_phys(tb, phys_pc, phys_page2); |
627 | d720b93d | bellard | } |
628 | d720b93d | bellard | #endif
|
629 | d720b93d | bellard | |
630 | 9fa3e853 | bellard | /* invalidate all TBs which intersect with the target physical page
|
631 | 9fa3e853 | bellard | starting in range [start;end[. NOTE: start and end must refer to
|
632 | d720b93d | bellard | the same physical page. 'is_cpu_write_access' should be true if called
|
633 | d720b93d | bellard | from a real cpu write access: the virtual CPU will exit the current
|
634 | d720b93d | bellard | TB if code is modified inside this TB. */
|
635 | d720b93d | bellard | void tb_invalidate_phys_page_range(target_ulong start, target_ulong end,
|
636 | d720b93d | bellard | int is_cpu_write_access)
|
637 | d720b93d | bellard | { |
638 | d720b93d | bellard | int n, current_tb_modified, current_tb_not_found, current_flags;
|
639 | d720b93d | bellard | CPUState *env = cpu_single_env; |
640 | 9fa3e853 | bellard | PageDesc *p; |
641 | ea1c1802 | bellard | TranslationBlock *tb, *tb_next, *current_tb, *saved_tb; |
642 | 9fa3e853 | bellard | target_ulong tb_start, tb_end; |
643 | d720b93d | bellard | target_ulong current_pc, current_cs_base; |
644 | 9fa3e853 | bellard | |
645 | 9fa3e853 | bellard | p = page_find(start >> TARGET_PAGE_BITS); |
646 | 9fa3e853 | bellard | if (!p)
|
647 | 9fa3e853 | bellard | return;
|
648 | 9fa3e853 | bellard | if (!p->code_bitmap &&
|
649 | d720b93d | bellard | ++p->code_write_count >= SMC_BITMAP_USE_THRESHOLD && |
650 | d720b93d | bellard | is_cpu_write_access) { |
651 | 9fa3e853 | bellard | /* build code bitmap */
|
652 | 9fa3e853 | bellard | build_page_bitmap(p); |
653 | 9fa3e853 | bellard | } |
654 | 9fa3e853 | bellard | |
655 | 9fa3e853 | bellard | /* we remove all the TBs in the range [start, end[ */
|
656 | 9fa3e853 | bellard | /* XXX: see if in some cases it could be faster to invalidate all the code */
|
657 | d720b93d | bellard | current_tb_not_found = is_cpu_write_access; |
658 | d720b93d | bellard | current_tb_modified = 0;
|
659 | d720b93d | bellard | current_tb = NULL; /* avoid warning */ |
660 | d720b93d | bellard | current_pc = 0; /* avoid warning */ |
661 | d720b93d | bellard | current_cs_base = 0; /* avoid warning */ |
662 | d720b93d | bellard | current_flags = 0; /* avoid warning */ |
663 | 9fa3e853 | bellard | tb = p->first_tb; |
664 | 9fa3e853 | bellard | while (tb != NULL) { |
665 | 9fa3e853 | bellard | n = (long)tb & 3; |
666 | 9fa3e853 | bellard | tb = (TranslationBlock *)((long)tb & ~3); |
667 | 9fa3e853 | bellard | tb_next = tb->page_next[n]; |
668 | 9fa3e853 | bellard | /* NOTE: this is subtle as a TB may span two physical pages */
|
669 | 9fa3e853 | bellard | if (n == 0) { |
670 | 9fa3e853 | bellard | /* NOTE: tb_end may be after the end of the page, but
|
671 | 9fa3e853 | bellard | it is not a problem */
|
672 | 9fa3e853 | bellard | tb_start = tb->page_addr[0] + (tb->pc & ~TARGET_PAGE_MASK);
|
673 | 9fa3e853 | bellard | tb_end = tb_start + tb->size; |
674 | 9fa3e853 | bellard | } else {
|
675 | 9fa3e853 | bellard | tb_start = tb->page_addr[1];
|
676 | 9fa3e853 | bellard | tb_end = tb_start + ((tb->pc + tb->size) & ~TARGET_PAGE_MASK); |
677 | 9fa3e853 | bellard | } |
678 | 9fa3e853 | bellard | if (!(tb_end <= start || tb_start >= end)) {
|
679 | d720b93d | bellard | #ifdef TARGET_HAS_PRECISE_SMC
|
680 | d720b93d | bellard | if (current_tb_not_found) {
|
681 | d720b93d | bellard | current_tb_not_found = 0;
|
682 | d720b93d | bellard | current_tb = NULL;
|
683 | d720b93d | bellard | if (env->mem_write_pc) {
|
684 | d720b93d | bellard | /* now we have a real cpu fault */
|
685 | d720b93d | bellard | current_tb = tb_find_pc(env->mem_write_pc); |
686 | d720b93d | bellard | } |
687 | d720b93d | bellard | } |
688 | d720b93d | bellard | if (current_tb == tb &&
|
689 | d720b93d | bellard | !(current_tb->cflags & CF_SINGLE_INSN)) { |
690 | d720b93d | bellard | /* If we are modifying the current TB, we must stop
|
691 | d720b93d | bellard | its execution. We could be more precise by checking
|
692 | d720b93d | bellard | that the modification is after the current PC, but it
|
693 | d720b93d | bellard | would require a specialized function to partially
|
694 | d720b93d | bellard | restore the CPU state */
|
695 | d720b93d | bellard | |
696 | d720b93d | bellard | current_tb_modified = 1;
|
697 | d720b93d | bellard | cpu_restore_state(current_tb, env, |
698 | d720b93d | bellard | env->mem_write_pc, NULL);
|
699 | d720b93d | bellard | #if defined(TARGET_I386)
|
700 | d720b93d | bellard | current_flags = env->hflags; |
701 | d720b93d | bellard | current_flags |= (env->eflags & (IOPL_MASK | TF_MASK | VM_MASK)); |
702 | d720b93d | bellard | current_cs_base = (target_ulong)env->segs[R_CS].base; |
703 | d720b93d | bellard | current_pc = current_cs_base + env->eip; |
704 | d720b93d | bellard | #else
|
705 | d720b93d | bellard | #error unsupported CPU
|
706 | d720b93d | bellard | #endif
|
707 | d720b93d | bellard | } |
708 | d720b93d | bellard | #endif /* TARGET_HAS_PRECISE_SMC */ |
709 | ea1c1802 | bellard | saved_tb = env->current_tb; |
710 | ea1c1802 | bellard | env->current_tb = NULL;
|
711 | 9fa3e853 | bellard | tb_phys_invalidate(tb, -1);
|
712 | ea1c1802 | bellard | env->current_tb = saved_tb; |
713 | ea1c1802 | bellard | if (env->interrupt_request && env->current_tb)
|
714 | ea1c1802 | bellard | cpu_interrupt(env, env->interrupt_request); |
715 | 9fa3e853 | bellard | } |
716 | 9fa3e853 | bellard | tb = tb_next; |
717 | 9fa3e853 | bellard | } |
718 | 9fa3e853 | bellard | #if !defined(CONFIG_USER_ONLY)
|
719 | 9fa3e853 | bellard | /* if no code remaining, no need to continue to use slow writes */
|
720 | 9fa3e853 | bellard | if (!p->first_tb) {
|
721 | 9fa3e853 | bellard | invalidate_page_bitmap(p); |
722 | d720b93d | bellard | if (is_cpu_write_access) {
|
723 | d720b93d | bellard | tlb_unprotect_code_phys(env, start, env->mem_write_vaddr); |
724 | d720b93d | bellard | } |
725 | d720b93d | bellard | } |
726 | d720b93d | bellard | #endif
|
727 | d720b93d | bellard | #ifdef TARGET_HAS_PRECISE_SMC
|
728 | d720b93d | bellard | if (current_tb_modified) {
|
729 | d720b93d | bellard | /* we generate a block containing just the instruction
|
730 | d720b93d | bellard | modifying the memory. It will ensure that it cannot modify
|
731 | d720b93d | bellard | itself */
|
732 | ea1c1802 | bellard | env->current_tb = NULL;
|
733 | d720b93d | bellard | tb_gen_code(env, current_pc, current_cs_base, current_flags, |
734 | d720b93d | bellard | CF_SINGLE_INSN); |
735 | d720b93d | bellard | cpu_resume_from_signal(env, NULL);
|
736 | 9fa3e853 | bellard | } |
737 | fd6ce8f6 | bellard | #endif
|
738 | 9fa3e853 | bellard | } |
739 | fd6ce8f6 | bellard | |
740 | 9fa3e853 | bellard | /* len must be <= 8 and start must be a multiple of len */
|
741 | d720b93d | bellard | static inline void tb_invalidate_phys_page_fast(target_ulong start, int len) |
742 | 9fa3e853 | bellard | { |
743 | 9fa3e853 | bellard | PageDesc *p; |
744 | 9fa3e853 | bellard | int offset, b;
|
745 | 59817ccb | bellard | #if 0
|
746 | a4193c8a | bellard | if (1) {
|
747 | a4193c8a | bellard | if (loglevel) {
|
748 | a4193c8a | bellard | fprintf(logfile, "modifying code at 0x%x size=%d EIP=%x PC=%08x\n",
|
749 | a4193c8a | bellard | cpu_single_env->mem_write_vaddr, len,
|
750 | a4193c8a | bellard | cpu_single_env->eip,
|
751 | a4193c8a | bellard | cpu_single_env->eip + (long)cpu_single_env->segs[R_CS].base);
|
752 | a4193c8a | bellard | }
|
753 | 59817ccb | bellard | }
|
754 | 59817ccb | bellard | #endif
|
755 | 9fa3e853 | bellard | p = page_find(start >> TARGET_PAGE_BITS); |
756 | 9fa3e853 | bellard | if (!p)
|
757 | 9fa3e853 | bellard | return;
|
758 | 9fa3e853 | bellard | if (p->code_bitmap) {
|
759 | 9fa3e853 | bellard | offset = start & ~TARGET_PAGE_MASK; |
760 | 9fa3e853 | bellard | b = p->code_bitmap[offset >> 3] >> (offset & 7); |
761 | 9fa3e853 | bellard | if (b & ((1 << len) - 1)) |
762 | 9fa3e853 | bellard | goto do_invalidate;
|
763 | 9fa3e853 | bellard | } else {
|
764 | 9fa3e853 | bellard | do_invalidate:
|
765 | d720b93d | bellard | tb_invalidate_phys_page_range(start, start + len, 1);
|
766 | 9fa3e853 | bellard | } |
767 | 9fa3e853 | bellard | } |
768 | 9fa3e853 | bellard | |
769 | 9fa3e853 | bellard | #if !defined(CONFIG_SOFTMMU)
|
770 | d720b93d | bellard | static void tb_invalidate_phys_page(target_ulong addr, |
771 | d720b93d | bellard | unsigned long pc, void *puc) |
772 | 9fa3e853 | bellard | { |
773 | d720b93d | bellard | int n, current_flags, current_tb_modified;
|
774 | d720b93d | bellard | target_ulong current_pc, current_cs_base; |
775 | 9fa3e853 | bellard | PageDesc *p; |
776 | d720b93d | bellard | TranslationBlock *tb, *current_tb; |
777 | d720b93d | bellard | #ifdef TARGET_HAS_PRECISE_SMC
|
778 | d720b93d | bellard | CPUState *env = cpu_single_env; |
779 | d720b93d | bellard | #endif
|
780 | 9fa3e853 | bellard | |
781 | 9fa3e853 | bellard | addr &= TARGET_PAGE_MASK; |
782 | 9fa3e853 | bellard | p = page_find(addr >> TARGET_PAGE_BITS); |
783 | 9fa3e853 | bellard | if (!p)
|
784 | 9fa3e853 | bellard | return;
|
785 | 9fa3e853 | bellard | tb = p->first_tb; |
786 | d720b93d | bellard | current_tb_modified = 0;
|
787 | d720b93d | bellard | current_tb = NULL;
|
788 | d720b93d | bellard | current_pc = 0; /* avoid warning */ |
789 | d720b93d | bellard | current_cs_base = 0; /* avoid warning */ |
790 | d720b93d | bellard | current_flags = 0; /* avoid warning */ |
791 | d720b93d | bellard | #ifdef TARGET_HAS_PRECISE_SMC
|
792 | d720b93d | bellard | if (tb && pc != 0) { |
793 | d720b93d | bellard | current_tb = tb_find_pc(pc); |
794 | d720b93d | bellard | } |
795 | d720b93d | bellard | #endif
|
796 | 9fa3e853 | bellard | while (tb != NULL) { |
797 | 9fa3e853 | bellard | n = (long)tb & 3; |
798 | 9fa3e853 | bellard | tb = (TranslationBlock *)((long)tb & ~3); |
799 | d720b93d | bellard | #ifdef TARGET_HAS_PRECISE_SMC
|
800 | d720b93d | bellard | if (current_tb == tb &&
|
801 | d720b93d | bellard | !(current_tb->cflags & CF_SINGLE_INSN)) { |
802 | d720b93d | bellard | /* If we are modifying the current TB, we must stop
|
803 | d720b93d | bellard | its execution. We could be more precise by checking
|
804 | d720b93d | bellard | that the modification is after the current PC, but it
|
805 | d720b93d | bellard | would require a specialized function to partially
|
806 | d720b93d | bellard | restore the CPU state */
|
807 | d720b93d | bellard | |
808 | d720b93d | bellard | current_tb_modified = 1;
|
809 | d720b93d | bellard | cpu_restore_state(current_tb, env, pc, puc); |
810 | d720b93d | bellard | #if defined(TARGET_I386)
|
811 | d720b93d | bellard | current_flags = env->hflags; |
812 | d720b93d | bellard | current_flags |= (env->eflags & (IOPL_MASK | TF_MASK | VM_MASK)); |
813 | d720b93d | bellard | current_cs_base = (target_ulong)env->segs[R_CS].base; |
814 | d720b93d | bellard | current_pc = current_cs_base + env->eip; |
815 | d720b93d | bellard | #else
|
816 | d720b93d | bellard | #error unsupported CPU
|
817 | d720b93d | bellard | #endif
|
818 | d720b93d | bellard | } |
819 | d720b93d | bellard | #endif /* TARGET_HAS_PRECISE_SMC */ |
820 | 9fa3e853 | bellard | tb_phys_invalidate(tb, addr); |
821 | 9fa3e853 | bellard | tb = tb->page_next[n]; |
822 | 9fa3e853 | bellard | } |
823 | fd6ce8f6 | bellard | p->first_tb = NULL;
|
824 | d720b93d | bellard | #ifdef TARGET_HAS_PRECISE_SMC
|
825 | d720b93d | bellard | if (current_tb_modified) {
|
826 | d720b93d | bellard | /* we generate a block containing just the instruction
|
827 | d720b93d | bellard | modifying the memory. It will ensure that it cannot modify
|
828 | d720b93d | bellard | itself */
|
829 | ea1c1802 | bellard | env->current_tb = NULL;
|
830 | d720b93d | bellard | tb_gen_code(env, current_pc, current_cs_base, current_flags, |
831 | d720b93d | bellard | CF_SINGLE_INSN); |
832 | d720b93d | bellard | cpu_resume_from_signal(env, puc); |
833 | d720b93d | bellard | } |
834 | d720b93d | bellard | #endif
|
835 | fd6ce8f6 | bellard | } |
836 | 9fa3e853 | bellard | #endif
|
837 | fd6ce8f6 | bellard | |
838 | fd6ce8f6 | bellard | /* add the tb in the target page and protect it if necessary */
|
839 | 9fa3e853 | bellard | static inline void tb_alloc_page(TranslationBlock *tb, |
840 | 9fa3e853 | bellard | unsigned int n, unsigned int page_addr) |
841 | fd6ce8f6 | bellard | { |
842 | fd6ce8f6 | bellard | PageDesc *p; |
843 | 9fa3e853 | bellard | TranslationBlock *last_first_tb; |
844 | 9fa3e853 | bellard | |
845 | 9fa3e853 | bellard | tb->page_addr[n] = page_addr; |
846 | 9fa3e853 | bellard | p = page_find(page_addr >> TARGET_PAGE_BITS); |
847 | 9fa3e853 | bellard | tb->page_next[n] = p->first_tb; |
848 | 9fa3e853 | bellard | last_first_tb = p->first_tb; |
849 | 9fa3e853 | bellard | p->first_tb = (TranslationBlock *)((long)tb | n);
|
850 | 9fa3e853 | bellard | invalidate_page_bitmap(p); |
851 | fd6ce8f6 | bellard | |
852 | 107db443 | bellard | #if defined(TARGET_HAS_SMC) || 1 |
853 | d720b93d | bellard | |
854 | 9fa3e853 | bellard | #if defined(CONFIG_USER_ONLY)
|
855 | fd6ce8f6 | bellard | if (p->flags & PAGE_WRITE) {
|
856 | 9fa3e853 | bellard | unsigned long host_start, host_end, addr; |
857 | 9fa3e853 | bellard | int prot;
|
858 | 9fa3e853 | bellard | |
859 | fd6ce8f6 | bellard | /* force the host page as non writable (writes will have a
|
860 | fd6ce8f6 | bellard | page fault + mprotect overhead) */
|
861 | 83fb7adf | bellard | host_start = page_addr & qemu_host_page_mask; |
862 | 83fb7adf | bellard | host_end = host_start + qemu_host_page_size; |
863 | fd6ce8f6 | bellard | prot = 0;
|
864 | fd6ce8f6 | bellard | for(addr = host_start; addr < host_end; addr += TARGET_PAGE_SIZE)
|
865 | fd6ce8f6 | bellard | prot |= page_get_flags(addr); |
866 | 83fb7adf | bellard | mprotect((void *)host_start, qemu_host_page_size,
|
867 | fd6ce8f6 | bellard | (prot & PAGE_BITS) & ~PAGE_WRITE); |
868 | fd6ce8f6 | bellard | #ifdef DEBUG_TB_INVALIDATE
|
869 | fd6ce8f6 | bellard | printf("protecting code page: 0x%08lx\n",
|
870 | fd6ce8f6 | bellard | host_start); |
871 | fd6ce8f6 | bellard | #endif
|
872 | fd6ce8f6 | bellard | p->flags &= ~PAGE_WRITE; |
873 | fd6ce8f6 | bellard | } |
874 | 9fa3e853 | bellard | #else
|
875 | 9fa3e853 | bellard | /* if some code is already present, then the pages are already
|
876 | 9fa3e853 | bellard | protected. So we handle the case where only the first TB is
|
877 | 9fa3e853 | bellard | allocated in a physical page */
|
878 | 9fa3e853 | bellard | if (!last_first_tb) {
|
879 | 9fa3e853 | bellard | target_ulong virt_addr; |
880 | 9fa3e853 | bellard | |
881 | 9fa3e853 | bellard | virt_addr = (tb->pc & TARGET_PAGE_MASK) + (n << TARGET_PAGE_BITS); |
882 | 9fa3e853 | bellard | tlb_protect_code(cpu_single_env, virt_addr); |
883 | 9fa3e853 | bellard | } |
884 | 9fa3e853 | bellard | #endif
|
885 | d720b93d | bellard | |
886 | d720b93d | bellard | #endif /* TARGET_HAS_SMC */ |
887 | fd6ce8f6 | bellard | } |
888 | fd6ce8f6 | bellard | |
889 | fd6ce8f6 | bellard | /* Allocate a new translation block. Flush the translation buffer if
|
890 | fd6ce8f6 | bellard | too many translation blocks or too much generated code. */
|
891 | c27004ec | bellard | TranslationBlock *tb_alloc(target_ulong pc) |
892 | fd6ce8f6 | bellard | { |
893 | fd6ce8f6 | bellard | TranslationBlock *tb; |
894 | fd6ce8f6 | bellard | |
895 | fd6ce8f6 | bellard | if (nb_tbs >= CODE_GEN_MAX_BLOCKS ||
|
896 | fd6ce8f6 | bellard | (code_gen_ptr - code_gen_buffer) >= CODE_GEN_BUFFER_MAX_SIZE) |
897 | d4e8164f | bellard | return NULL; |
898 | fd6ce8f6 | bellard | tb = &tbs[nb_tbs++]; |
899 | fd6ce8f6 | bellard | tb->pc = pc; |
900 | b448f2f3 | bellard | tb->cflags = 0;
|
901 | d4e8164f | bellard | return tb;
|
902 | d4e8164f | bellard | } |
903 | d4e8164f | bellard | |
904 | 9fa3e853 | bellard | /* add a new TB and link it to the physical page tables. phys_page2 is
|
905 | 9fa3e853 | bellard | (-1) to indicate that only one page contains the TB. */
|
906 | 9fa3e853 | bellard | void tb_link_phys(TranslationBlock *tb,
|
907 | 9fa3e853 | bellard | target_ulong phys_pc, target_ulong phys_page2) |
908 | d4e8164f | bellard | { |
909 | 9fa3e853 | bellard | unsigned int h; |
910 | 9fa3e853 | bellard | TranslationBlock **ptb; |
911 | 9fa3e853 | bellard | |
912 | 9fa3e853 | bellard | /* add in the physical hash table */
|
913 | 9fa3e853 | bellard | h = tb_phys_hash_func(phys_pc); |
914 | 9fa3e853 | bellard | ptb = &tb_phys_hash[h]; |
915 | 9fa3e853 | bellard | tb->phys_hash_next = *ptb; |
916 | 9fa3e853 | bellard | *ptb = tb; |
917 | fd6ce8f6 | bellard | |
918 | fd6ce8f6 | bellard | /* add in the page list */
|
919 | 9fa3e853 | bellard | tb_alloc_page(tb, 0, phys_pc & TARGET_PAGE_MASK);
|
920 | 9fa3e853 | bellard | if (phys_page2 != -1) |
921 | 9fa3e853 | bellard | tb_alloc_page(tb, 1, phys_page2);
|
922 | 9fa3e853 | bellard | else
|
923 | 9fa3e853 | bellard | tb->page_addr[1] = -1; |
924 | 61382a50 | bellard | #ifdef DEBUG_TB_CHECK
|
925 | 61382a50 | bellard | tb_page_check(); |
926 | 61382a50 | bellard | #endif
|
927 | 9fa3e853 | bellard | } |
928 | 9fa3e853 | bellard | |
929 | 9fa3e853 | bellard | /* link the tb with the other TBs */
|
930 | 9fa3e853 | bellard | void tb_link(TranslationBlock *tb)
|
931 | 9fa3e853 | bellard | { |
932 | 9fa3e853 | bellard | #if !defined(CONFIG_USER_ONLY)
|
933 | 9fa3e853 | bellard | { |
934 | 9fa3e853 | bellard | VirtPageDesc *vp; |
935 | 9fa3e853 | bellard | target_ulong addr; |
936 | 9fa3e853 | bellard | |
937 | 9fa3e853 | bellard | /* save the code memory mappings (needed to invalidate the code) */
|
938 | 9fa3e853 | bellard | addr = tb->pc & TARGET_PAGE_MASK; |
939 | 9fa3e853 | bellard | vp = virt_page_find_alloc(addr >> TARGET_PAGE_BITS); |
940 | 98857888 | bellard | #ifdef DEBUG_TLB_CHECK
|
941 | 98857888 | bellard | if (vp->valid_tag == virt_valid_tag &&
|
942 | 98857888 | bellard | vp->phys_addr != tb->page_addr[0]) {
|
943 | 98857888 | bellard | printf("Error tb addr=0x%x phys=0x%x vp->phys_addr=0x%x\n",
|
944 | 98857888 | bellard | addr, tb->page_addr[0], vp->phys_addr);
|
945 | 98857888 | bellard | } |
946 | 98857888 | bellard | #endif
|
947 | 9fa3e853 | bellard | vp->phys_addr = tb->page_addr[0];
|
948 | 59817ccb | bellard | if (vp->valid_tag != virt_valid_tag) {
|
949 | 59817ccb | bellard | vp->valid_tag = virt_valid_tag; |
950 | 59817ccb | bellard | #if !defined(CONFIG_SOFTMMU)
|
951 | 59817ccb | bellard | vp->prot = 0;
|
952 | 59817ccb | bellard | #endif
|
953 | 59817ccb | bellard | } |
954 | 9fa3e853 | bellard | |
955 | 9fa3e853 | bellard | if (tb->page_addr[1] != -1) { |
956 | 9fa3e853 | bellard | addr += TARGET_PAGE_SIZE; |
957 | 9fa3e853 | bellard | vp = virt_page_find_alloc(addr >> TARGET_PAGE_BITS); |
958 | 98857888 | bellard | #ifdef DEBUG_TLB_CHECK
|
959 | 98857888 | bellard | if (vp->valid_tag == virt_valid_tag &&
|
960 | 98857888 | bellard | vp->phys_addr != tb->page_addr[1]) {
|
961 | 98857888 | bellard | printf("Error tb addr=0x%x phys=0x%x vp->phys_addr=0x%x\n",
|
962 | 98857888 | bellard | addr, tb->page_addr[1], vp->phys_addr);
|
963 | 98857888 | bellard | } |
964 | 98857888 | bellard | #endif
|
965 | 9fa3e853 | bellard | vp->phys_addr = tb->page_addr[1];
|
966 | 59817ccb | bellard | if (vp->valid_tag != virt_valid_tag) {
|
967 | 59817ccb | bellard | vp->valid_tag = virt_valid_tag; |
968 | 59817ccb | bellard | #if !defined(CONFIG_SOFTMMU)
|
969 | 59817ccb | bellard | vp->prot = 0;
|
970 | 59817ccb | bellard | #endif
|
971 | 59817ccb | bellard | } |
972 | 9fa3e853 | bellard | } |
973 | 9fa3e853 | bellard | } |
974 | 9fa3e853 | bellard | #endif
|
975 | 9fa3e853 | bellard | |
976 | d4e8164f | bellard | tb->jmp_first = (TranslationBlock *)((long)tb | 2); |
977 | d4e8164f | bellard | tb->jmp_next[0] = NULL; |
978 | d4e8164f | bellard | tb->jmp_next[1] = NULL; |
979 | b448f2f3 | bellard | #ifdef USE_CODE_COPY
|
980 | b448f2f3 | bellard | tb->cflags &= ~CF_FP_USED; |
981 | b448f2f3 | bellard | if (tb->cflags & CF_TB_FP_USED)
|
982 | b448f2f3 | bellard | tb->cflags |= CF_FP_USED; |
983 | b448f2f3 | bellard | #endif
|
984 | d4e8164f | bellard | |
985 | d4e8164f | bellard | /* init original jump addresses */
|
986 | d4e8164f | bellard | if (tb->tb_next_offset[0] != 0xffff) |
987 | d4e8164f | bellard | tb_reset_jump(tb, 0);
|
988 | d4e8164f | bellard | if (tb->tb_next_offset[1] != 0xffff) |
989 | d4e8164f | bellard | tb_reset_jump(tb, 1);
|
990 | fd6ce8f6 | bellard | } |
991 | fd6ce8f6 | bellard | |
992 | 9fa3e853 | bellard | /* find the TB 'tb' such that tb[0].tc_ptr <= tc_ptr <
|
993 | 9fa3e853 | bellard | tb[1].tc_ptr. Return NULL if not found */
|
994 | 9fa3e853 | bellard | TranslationBlock *tb_find_pc(unsigned long tc_ptr) |
995 | fd6ce8f6 | bellard | { |
996 | 9fa3e853 | bellard | int m_min, m_max, m;
|
997 | 9fa3e853 | bellard | unsigned long v; |
998 | 9fa3e853 | bellard | TranslationBlock *tb; |
999 | a513fe19 | bellard | |
1000 | a513fe19 | bellard | if (nb_tbs <= 0) |
1001 | a513fe19 | bellard | return NULL; |
1002 | a513fe19 | bellard | if (tc_ptr < (unsigned long)code_gen_buffer || |
1003 | a513fe19 | bellard | tc_ptr >= (unsigned long)code_gen_ptr) |
1004 | a513fe19 | bellard | return NULL; |
1005 | a513fe19 | bellard | /* binary search (cf Knuth) */
|
1006 | a513fe19 | bellard | m_min = 0;
|
1007 | a513fe19 | bellard | m_max = nb_tbs - 1;
|
1008 | a513fe19 | bellard | while (m_min <= m_max) {
|
1009 | a513fe19 | bellard | m = (m_min + m_max) >> 1;
|
1010 | a513fe19 | bellard | tb = &tbs[m]; |
1011 | a513fe19 | bellard | v = (unsigned long)tb->tc_ptr; |
1012 | a513fe19 | bellard | if (v == tc_ptr)
|
1013 | a513fe19 | bellard | return tb;
|
1014 | a513fe19 | bellard | else if (tc_ptr < v) { |
1015 | a513fe19 | bellard | m_max = m - 1;
|
1016 | a513fe19 | bellard | } else {
|
1017 | a513fe19 | bellard | m_min = m + 1;
|
1018 | a513fe19 | bellard | } |
1019 | a513fe19 | bellard | } |
1020 | a513fe19 | bellard | return &tbs[m_max];
|
1021 | a513fe19 | bellard | } |
1022 | 7501267e | bellard | |
1023 | ea041c0e | bellard | static void tb_reset_jump_recursive(TranslationBlock *tb); |
1024 | ea041c0e | bellard | |
1025 | ea041c0e | bellard | static inline void tb_reset_jump_recursive2(TranslationBlock *tb, int n) |
1026 | ea041c0e | bellard | { |
1027 | ea041c0e | bellard | TranslationBlock *tb1, *tb_next, **ptb; |
1028 | ea041c0e | bellard | unsigned int n1; |
1029 | ea041c0e | bellard | |
1030 | ea041c0e | bellard | tb1 = tb->jmp_next[n]; |
1031 | ea041c0e | bellard | if (tb1 != NULL) { |
1032 | ea041c0e | bellard | /* find head of list */
|
1033 | ea041c0e | bellard | for(;;) {
|
1034 | ea041c0e | bellard | n1 = (long)tb1 & 3; |
1035 | ea041c0e | bellard | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
1036 | ea041c0e | bellard | if (n1 == 2) |
1037 | ea041c0e | bellard | break;
|
1038 | ea041c0e | bellard | tb1 = tb1->jmp_next[n1]; |
1039 | ea041c0e | bellard | } |
1040 | ea041c0e | bellard | /* we are now sure now that tb jumps to tb1 */
|
1041 | ea041c0e | bellard | tb_next = tb1; |
1042 | ea041c0e | bellard | |
1043 | ea041c0e | bellard | /* remove tb from the jmp_first list */
|
1044 | ea041c0e | bellard | ptb = &tb_next->jmp_first; |
1045 | ea041c0e | bellard | for(;;) {
|
1046 | ea041c0e | bellard | tb1 = *ptb; |
1047 | ea041c0e | bellard | n1 = (long)tb1 & 3; |
1048 | ea041c0e | bellard | tb1 = (TranslationBlock *)((long)tb1 & ~3); |
1049 | ea041c0e | bellard | if (n1 == n && tb1 == tb)
|
1050 | ea041c0e | bellard | break;
|
1051 | ea041c0e | bellard | ptb = &tb1->jmp_next[n1]; |
1052 | ea041c0e | bellard | } |
1053 | ea041c0e | bellard | *ptb = tb->jmp_next[n]; |
1054 | ea041c0e | bellard | tb->jmp_next[n] = NULL;
|
1055 | ea041c0e | bellard | |
1056 | ea041c0e | bellard | /* suppress the jump to next tb in generated code */
|
1057 | ea041c0e | bellard | tb_reset_jump(tb, n); |
1058 | ea041c0e | bellard | |
1059 | 0124311e | bellard | /* suppress jumps in the tb on which we could have jumped */
|
1060 | ea041c0e | bellard | tb_reset_jump_recursive(tb_next); |
1061 | ea041c0e | bellard | } |
1062 | ea041c0e | bellard | } |
1063 | ea041c0e | bellard | |
1064 | ea041c0e | bellard | static void tb_reset_jump_recursive(TranslationBlock *tb) |
1065 | ea041c0e | bellard | { |
1066 | ea041c0e | bellard | tb_reset_jump_recursive2(tb, 0);
|
1067 | ea041c0e | bellard | tb_reset_jump_recursive2(tb, 1);
|
1068 | ea041c0e | bellard | } |
1069 | ea041c0e | bellard | |
1070 | c27004ec | bellard | #if defined(TARGET_I386) || defined(TARGET_PPC) || defined(TARGET_SPARC)
|
1071 | d720b93d | bellard | static void breakpoint_invalidate(CPUState *env, target_ulong pc) |
1072 | d720b93d | bellard | { |
1073 | d720b93d | bellard | target_ulong phys_addr; |
1074 | d720b93d | bellard | |
1075 | d720b93d | bellard | phys_addr = cpu_get_phys_page_debug(env, pc); |
1076 | d720b93d | bellard | tb_invalidate_phys_page_range(phys_addr, phys_addr + 1, 0); |
1077 | d720b93d | bellard | } |
1078 | c27004ec | bellard | #endif
|
1079 | d720b93d | bellard | |
1080 | c33a346e | bellard | /* add a breakpoint. EXCP_DEBUG is returned by the CPU loop if a
|
1081 | c33a346e | bellard | breakpoint is reached */
|
1082 | 2e12669a | bellard | int cpu_breakpoint_insert(CPUState *env, target_ulong pc)
|
1083 | 4c3a88a2 | bellard | { |
1084 | e95c8d51 | bellard | #if defined(TARGET_I386) || defined(TARGET_PPC) || defined(TARGET_SPARC)
|
1085 | 4c3a88a2 | bellard | int i;
|
1086 | d720b93d | bellard | |
1087 | 4c3a88a2 | bellard | for(i = 0; i < env->nb_breakpoints; i++) { |
1088 | 4c3a88a2 | bellard | if (env->breakpoints[i] == pc)
|
1089 | 4c3a88a2 | bellard | return 0; |
1090 | 4c3a88a2 | bellard | } |
1091 | 4c3a88a2 | bellard | |
1092 | 4c3a88a2 | bellard | if (env->nb_breakpoints >= MAX_BREAKPOINTS)
|
1093 | 4c3a88a2 | bellard | return -1; |
1094 | 4c3a88a2 | bellard | env->breakpoints[env->nb_breakpoints++] = pc; |
1095 | d720b93d | bellard | |
1096 | d720b93d | bellard | breakpoint_invalidate(env, pc); |
1097 | 4c3a88a2 | bellard | return 0; |
1098 | 4c3a88a2 | bellard | #else
|
1099 | 4c3a88a2 | bellard | return -1; |
1100 | 4c3a88a2 | bellard | #endif
|
1101 | 4c3a88a2 | bellard | } |
1102 | 4c3a88a2 | bellard | |
1103 | 4c3a88a2 | bellard | /* remove a breakpoint */
|
1104 | 2e12669a | bellard | int cpu_breakpoint_remove(CPUState *env, target_ulong pc)
|
1105 | 4c3a88a2 | bellard | { |
1106 | e95c8d51 | bellard | #if defined(TARGET_I386) || defined(TARGET_PPC) || defined(TARGET_SPARC)
|
1107 | 4c3a88a2 | bellard | int i;
|
1108 | 4c3a88a2 | bellard | for(i = 0; i < env->nb_breakpoints; i++) { |
1109 | 4c3a88a2 | bellard | if (env->breakpoints[i] == pc)
|
1110 | 4c3a88a2 | bellard | goto found;
|
1111 | 4c3a88a2 | bellard | } |
1112 | 4c3a88a2 | bellard | return -1; |
1113 | 4c3a88a2 | bellard | found:
|
1114 | 4c3a88a2 | bellard | memmove(&env->breakpoints[i], &env->breakpoints[i + 1],
|
1115 | 4c3a88a2 | bellard | (env->nb_breakpoints - (i + 1)) * sizeof(env->breakpoints[0])); |
1116 | 4c3a88a2 | bellard | env->nb_breakpoints--; |
1117 | d720b93d | bellard | |
1118 | d720b93d | bellard | breakpoint_invalidate(env, pc); |
1119 | 4c3a88a2 | bellard | return 0; |
1120 | 4c3a88a2 | bellard | #else
|
1121 | 4c3a88a2 | bellard | return -1; |
1122 | 4c3a88a2 | bellard | #endif
|
1123 | 4c3a88a2 | bellard | } |
1124 | 4c3a88a2 | bellard | |
1125 | c33a346e | bellard | /* enable or disable single step mode. EXCP_DEBUG is returned by the
|
1126 | c33a346e | bellard | CPU loop after each instruction */
|
1127 | c33a346e | bellard | void cpu_single_step(CPUState *env, int enabled) |
1128 | c33a346e | bellard | { |
1129 | e95c8d51 | bellard | #if defined(TARGET_I386) || defined(TARGET_PPC) || defined(TARGET_SPARC)
|
1130 | c33a346e | bellard | if (env->singlestep_enabled != enabled) {
|
1131 | c33a346e | bellard | env->singlestep_enabled = enabled; |
1132 | c33a346e | bellard | /* must flush all the translated code to avoid inconsistancies */
|
1133 | 9fa3e853 | bellard | /* XXX: only flush what is necessary */
|
1134 | 0124311e | bellard | tb_flush(env); |
1135 | c33a346e | bellard | } |
1136 | c33a346e | bellard | #endif
|
1137 | c33a346e | bellard | } |
1138 | c33a346e | bellard | |
1139 | 34865134 | bellard | /* enable or disable low levels log */
|
1140 | 34865134 | bellard | void cpu_set_log(int log_flags) |
1141 | 34865134 | bellard | { |
1142 | 34865134 | bellard | loglevel = log_flags; |
1143 | 34865134 | bellard | if (loglevel && !logfile) {
|
1144 | 34865134 | bellard | logfile = fopen(logfilename, "w");
|
1145 | 34865134 | bellard | if (!logfile) {
|
1146 | 34865134 | bellard | perror(logfilename); |
1147 | 34865134 | bellard | _exit(1);
|
1148 | 34865134 | bellard | } |
1149 | 9fa3e853 | bellard | #if !defined(CONFIG_SOFTMMU)
|
1150 | 9fa3e853 | bellard | /* must avoid mmap() usage of glibc by setting a buffer "by hand" */
|
1151 | 9fa3e853 | bellard | { |
1152 | 9fa3e853 | bellard | static uint8_t logfile_buf[4096]; |
1153 | 9fa3e853 | bellard | setvbuf(logfile, logfile_buf, _IOLBF, sizeof(logfile_buf));
|
1154 | 9fa3e853 | bellard | } |
1155 | 9fa3e853 | bellard | #else
|
1156 | 34865134 | bellard | setvbuf(logfile, NULL, _IOLBF, 0); |
1157 | 9fa3e853 | bellard | #endif
|
1158 | 34865134 | bellard | } |
1159 | 34865134 | bellard | } |
1160 | 34865134 | bellard | |
1161 | 34865134 | bellard | void cpu_set_log_filename(const char *filename) |
1162 | 34865134 | bellard | { |
1163 | 34865134 | bellard | logfilename = strdup(filename); |
1164 | 34865134 | bellard | } |
1165 | c33a346e | bellard | |
1166 | 0124311e | bellard | /* mask must never be zero, except for A20 change call */
|
1167 | 68a79315 | bellard | void cpu_interrupt(CPUState *env, int mask) |
1168 | ea041c0e | bellard | { |
1169 | ea041c0e | bellard | TranslationBlock *tb; |
1170 | ee8b7021 | bellard | static int interrupt_lock; |
1171 | 59817ccb | bellard | |
1172 | 68a79315 | bellard | env->interrupt_request |= mask; |
1173 | ea041c0e | bellard | /* if the cpu is currently executing code, we must unlink it and
|
1174 | ea041c0e | bellard | all the potentially executing TB */
|
1175 | ea041c0e | bellard | tb = env->current_tb; |
1176 | ee8b7021 | bellard | if (tb && !testandset(&interrupt_lock)) {
|
1177 | ee8b7021 | bellard | env->current_tb = NULL;
|
1178 | ea041c0e | bellard | tb_reset_jump_recursive(tb); |
1179 | ee8b7021 | bellard | interrupt_lock = 0;
|
1180 | ea041c0e | bellard | } |
1181 | ea041c0e | bellard | } |
1182 | ea041c0e | bellard | |
1183 | b54ad049 | bellard | void cpu_reset_interrupt(CPUState *env, int mask) |
1184 | b54ad049 | bellard | { |
1185 | b54ad049 | bellard | env->interrupt_request &= ~mask; |
1186 | b54ad049 | bellard | } |
1187 | b54ad049 | bellard | |
1188 | f193c797 | bellard | CPULogItem cpu_log_items[] = { |
1189 | f193c797 | bellard | { CPU_LOG_TB_OUT_ASM, "out_asm",
|
1190 | f193c797 | bellard | "show generated host assembly code for each compiled TB" },
|
1191 | f193c797 | bellard | { CPU_LOG_TB_IN_ASM, "in_asm",
|
1192 | f193c797 | bellard | "show target assembly code for each compiled TB" },
|
1193 | f193c797 | bellard | { CPU_LOG_TB_OP, "op",
|
1194 | f193c797 | bellard | "show micro ops for each compiled TB (only usable if 'in_asm' used)" },
|
1195 | f193c797 | bellard | #ifdef TARGET_I386
|
1196 | f193c797 | bellard | { CPU_LOG_TB_OP_OPT, "op_opt",
|
1197 | f193c797 | bellard | "show micro ops after optimization for each compiled TB" },
|
1198 | f193c797 | bellard | #endif
|
1199 | f193c797 | bellard | { CPU_LOG_INT, "int",
|
1200 | f193c797 | bellard | "show interrupts/exceptions in short format" },
|
1201 | f193c797 | bellard | { CPU_LOG_EXEC, "exec",
|
1202 | f193c797 | bellard | "show trace before each executed TB (lots of logs)" },
|
1203 | 9fddaa0c | bellard | { CPU_LOG_TB_CPU, "cpu",
|
1204 | 9fddaa0c | bellard | "show CPU state before bloc translation" },
|
1205 | f193c797 | bellard | #ifdef TARGET_I386
|
1206 | f193c797 | bellard | { CPU_LOG_PCALL, "pcall",
|
1207 | f193c797 | bellard | "show protected mode far calls/returns/exceptions" },
|
1208 | f193c797 | bellard | #endif
|
1209 | 8e3a9fd2 | bellard | #ifdef DEBUG_IOPORT
|
1210 | fd872598 | bellard | { CPU_LOG_IOPORT, "ioport",
|
1211 | fd872598 | bellard | "show all i/o ports accesses" },
|
1212 | 8e3a9fd2 | bellard | #endif
|
1213 | f193c797 | bellard | { 0, NULL, NULL }, |
1214 | f193c797 | bellard | }; |
1215 | f193c797 | bellard | |
1216 | f193c797 | bellard | static int cmp1(const char *s1, int n, const char *s2) |
1217 | f193c797 | bellard | { |
1218 | f193c797 | bellard | if (strlen(s2) != n)
|
1219 | f193c797 | bellard | return 0; |
1220 | f193c797 | bellard | return memcmp(s1, s2, n) == 0; |
1221 | f193c797 | bellard | } |
1222 | f193c797 | bellard | |
1223 | f193c797 | bellard | /* takes a comma separated list of log masks. Return 0 if error. */
|
1224 | f193c797 | bellard | int cpu_str_to_log_mask(const char *str) |
1225 | f193c797 | bellard | { |
1226 | f193c797 | bellard | CPULogItem *item; |
1227 | f193c797 | bellard | int mask;
|
1228 | f193c797 | bellard | const char *p, *p1; |
1229 | f193c797 | bellard | |
1230 | f193c797 | bellard | p = str; |
1231 | f193c797 | bellard | mask = 0;
|
1232 | f193c797 | bellard | for(;;) {
|
1233 | f193c797 | bellard | p1 = strchr(p, ',');
|
1234 | f193c797 | bellard | if (!p1)
|
1235 | f193c797 | bellard | p1 = p + strlen(p); |
1236 | 8e3a9fd2 | bellard | if(cmp1(p,p1-p,"all")) { |
1237 | 8e3a9fd2 | bellard | for(item = cpu_log_items; item->mask != 0; item++) { |
1238 | 8e3a9fd2 | bellard | mask |= item->mask; |
1239 | 8e3a9fd2 | bellard | } |
1240 | 8e3a9fd2 | bellard | } else {
|
1241 | f193c797 | bellard | for(item = cpu_log_items; item->mask != 0; item++) { |
1242 | f193c797 | bellard | if (cmp1(p, p1 - p, item->name))
|
1243 | f193c797 | bellard | goto found;
|
1244 | f193c797 | bellard | } |
1245 | f193c797 | bellard | return 0; |
1246 | 8e3a9fd2 | bellard | } |
1247 | f193c797 | bellard | found:
|
1248 | f193c797 | bellard | mask |= item->mask; |
1249 | f193c797 | bellard | if (*p1 != ',') |
1250 | f193c797 | bellard | break;
|
1251 | f193c797 | bellard | p = p1 + 1;
|
1252 | f193c797 | bellard | } |
1253 | f193c797 | bellard | return mask;
|
1254 | f193c797 | bellard | } |
1255 | ea041c0e | bellard | |
1256 | 7501267e | bellard | void cpu_abort(CPUState *env, const char *fmt, ...) |
1257 | 7501267e | bellard | { |
1258 | 7501267e | bellard | va_list ap; |
1259 | 7501267e | bellard | |
1260 | 7501267e | bellard | va_start(ap, fmt); |
1261 | 7501267e | bellard | fprintf(stderr, "qemu: fatal: ");
|
1262 | 7501267e | bellard | vfprintf(stderr, fmt, ap); |
1263 | 7501267e | bellard | fprintf(stderr, "\n");
|
1264 | 7501267e | bellard | #ifdef TARGET_I386
|
1265 | 7fe48483 | bellard | cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU | X86_DUMP_CCOP); |
1266 | 7fe48483 | bellard | #else
|
1267 | 7fe48483 | bellard | cpu_dump_state(env, stderr, fprintf, 0);
|
1268 | 7501267e | bellard | #endif
|
1269 | 7501267e | bellard | va_end(ap); |
1270 | 7501267e | bellard | abort(); |
1271 | 7501267e | bellard | } |
1272 | 7501267e | bellard | |
1273 | 0124311e | bellard | #if !defined(CONFIG_USER_ONLY)
|
1274 | 0124311e | bellard | |
1275 | ee8b7021 | bellard | /* NOTE: if flush_global is true, also flush global entries (not
|
1276 | ee8b7021 | bellard | implemented yet) */
|
1277 | ee8b7021 | bellard | void tlb_flush(CPUState *env, int flush_global) |
1278 | 33417e70 | bellard | { |
1279 | 33417e70 | bellard | int i;
|
1280 | 0124311e | bellard | |
1281 | 9fa3e853 | bellard | #if defined(DEBUG_TLB)
|
1282 | 9fa3e853 | bellard | printf("tlb_flush:\n");
|
1283 | 9fa3e853 | bellard | #endif
|
1284 | 0124311e | bellard | /* must reset current TB so that interrupts cannot modify the
|
1285 | 0124311e | bellard | links while we are modifying them */
|
1286 | 0124311e | bellard | env->current_tb = NULL;
|
1287 | 0124311e | bellard | |
1288 | 33417e70 | bellard | for(i = 0; i < CPU_TLB_SIZE; i++) { |
1289 | 33417e70 | bellard | env->tlb_read[0][i].address = -1; |
1290 | 33417e70 | bellard | env->tlb_write[0][i].address = -1; |
1291 | 33417e70 | bellard | env->tlb_read[1][i].address = -1; |
1292 | 33417e70 | bellard | env->tlb_write[1][i].address = -1; |
1293 | 33417e70 | bellard | } |
1294 | 9fa3e853 | bellard | |
1295 | 9fa3e853 | bellard | virt_page_flush(); |
1296 | 8a8a608f | bellard | memset (tb_hash, 0, CODE_GEN_HASH_SIZE * sizeof (void *)); |
1297 | 9fa3e853 | bellard | |
1298 | 9fa3e853 | bellard | #if !defined(CONFIG_SOFTMMU)
|
1299 | 9fa3e853 | bellard | munmap((void *)MMAP_AREA_START, MMAP_AREA_END - MMAP_AREA_START);
|
1300 | 9fa3e853 | bellard | #endif
|
1301 | 33417e70 | bellard | } |
1302 | 33417e70 | bellard | |
1303 | 274da6b2 | bellard | static inline void tlb_flush_entry(CPUTLBEntry *tlb_entry, target_ulong addr) |
1304 | 61382a50 | bellard | { |
1305 | 61382a50 | bellard | if (addr == (tlb_entry->address &
|
1306 | 61382a50 | bellard | (TARGET_PAGE_MASK | TLB_INVALID_MASK))) |
1307 | 61382a50 | bellard | tlb_entry->address = -1;
|
1308 | 61382a50 | bellard | } |
1309 | 61382a50 | bellard | |
1310 | 2e12669a | bellard | void tlb_flush_page(CPUState *env, target_ulong addr)
|
1311 | 33417e70 | bellard | { |
1312 | 9fa3e853 | bellard | int i, n;
|
1313 | 9fa3e853 | bellard | VirtPageDesc *vp; |
1314 | 9fa3e853 | bellard | PageDesc *p; |
1315 | 9fa3e853 | bellard | TranslationBlock *tb; |
1316 | 0124311e | bellard | |
1317 | 9fa3e853 | bellard | #if defined(DEBUG_TLB)
|
1318 | 9fa3e853 | bellard | printf("tlb_flush_page: 0x%08x\n", addr);
|
1319 | 9fa3e853 | bellard | #endif
|
1320 | 0124311e | bellard | /* must reset current TB so that interrupts cannot modify the
|
1321 | 0124311e | bellard | links while we are modifying them */
|
1322 | 0124311e | bellard | env->current_tb = NULL;
|
1323 | 61382a50 | bellard | |
1324 | 61382a50 | bellard | addr &= TARGET_PAGE_MASK; |
1325 | 61382a50 | bellard | i = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
1326 | 61382a50 | bellard | tlb_flush_entry(&env->tlb_read[0][i], addr);
|
1327 | 61382a50 | bellard | tlb_flush_entry(&env->tlb_write[0][i], addr);
|
1328 | 61382a50 | bellard | tlb_flush_entry(&env->tlb_read[1][i], addr);
|
1329 | 61382a50 | bellard | tlb_flush_entry(&env->tlb_write[1][i], addr);
|
1330 | 0124311e | bellard | |
1331 | 9fa3e853 | bellard | /* remove from the virtual pc hash table all the TB at this
|
1332 | 9fa3e853 | bellard | virtual address */
|
1333 | 9fa3e853 | bellard | |
1334 | 9fa3e853 | bellard | vp = virt_page_find(addr >> TARGET_PAGE_BITS); |
1335 | 9fa3e853 | bellard | if (vp && vp->valid_tag == virt_valid_tag) {
|
1336 | 9fa3e853 | bellard | p = page_find(vp->phys_addr >> TARGET_PAGE_BITS); |
1337 | 9fa3e853 | bellard | if (p) {
|
1338 | 9fa3e853 | bellard | /* we remove all the links to the TBs in this virtual page */
|
1339 | 9fa3e853 | bellard | tb = p->first_tb; |
1340 | 9fa3e853 | bellard | while (tb != NULL) { |
1341 | 9fa3e853 | bellard | n = (long)tb & 3; |
1342 | 9fa3e853 | bellard | tb = (TranslationBlock *)((long)tb & ~3); |
1343 | 9fa3e853 | bellard | if ((tb->pc & TARGET_PAGE_MASK) == addr ||
|
1344 | 9fa3e853 | bellard | ((tb->pc + tb->size - 1) & TARGET_PAGE_MASK) == addr) {
|
1345 | 9fa3e853 | bellard | tb_invalidate(tb); |
1346 | 9fa3e853 | bellard | } |
1347 | 9fa3e853 | bellard | tb = tb->page_next[n]; |
1348 | 9fa3e853 | bellard | } |
1349 | 9fa3e853 | bellard | } |
1350 | 98857888 | bellard | vp->valid_tag = 0;
|
1351 | 9fa3e853 | bellard | } |
1352 | 9fa3e853 | bellard | |
1353 | 0124311e | bellard | #if !defined(CONFIG_SOFTMMU)
|
1354 | 9fa3e853 | bellard | if (addr < MMAP_AREA_END)
|
1355 | 0124311e | bellard | munmap((void *)addr, TARGET_PAGE_SIZE);
|
1356 | 61382a50 | bellard | #endif
|
1357 | 9fa3e853 | bellard | } |
1358 | 9fa3e853 | bellard | |
1359 | 4f2ac237 | bellard | static inline void tlb_protect_code1(CPUTLBEntry *tlb_entry, target_ulong addr) |
1360 | 9fa3e853 | bellard | { |
1361 | 9fa3e853 | bellard | if (addr == (tlb_entry->address &
|
1362 | 9fa3e853 | bellard | (TARGET_PAGE_MASK | TLB_INVALID_MASK)) && |
1363 | 98857888 | bellard | (tlb_entry->address & ~TARGET_PAGE_MASK) != IO_MEM_CODE && |
1364 | 98857888 | bellard | (tlb_entry->address & ~TARGET_PAGE_MASK) != IO_MEM_ROM) { |
1365 | 1ccde1cb | bellard | tlb_entry->address = (tlb_entry->address & TARGET_PAGE_MASK) | IO_MEM_CODE; |
1366 | 9fa3e853 | bellard | } |
1367 | 9fa3e853 | bellard | } |
1368 | 9fa3e853 | bellard | |
1369 | 9fa3e853 | bellard | /* update the TLBs so that writes to code in the virtual page 'addr'
|
1370 | 9fa3e853 | bellard | can be detected */
|
1371 | 4f2ac237 | bellard | static void tlb_protect_code(CPUState *env, target_ulong addr) |
1372 | 9fa3e853 | bellard | { |
1373 | 9fa3e853 | bellard | int i;
|
1374 | 9fa3e853 | bellard | |
1375 | 9fa3e853 | bellard | addr &= TARGET_PAGE_MASK; |
1376 | 9fa3e853 | bellard | i = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
1377 | 9fa3e853 | bellard | tlb_protect_code1(&env->tlb_write[0][i], addr);
|
1378 | 9fa3e853 | bellard | tlb_protect_code1(&env->tlb_write[1][i], addr);
|
1379 | 9fa3e853 | bellard | #if !defined(CONFIG_SOFTMMU)
|
1380 | 9fa3e853 | bellard | /* NOTE: as we generated the code for this page, it is already at
|
1381 | 9fa3e853 | bellard | least readable */
|
1382 | 9fa3e853 | bellard | if (addr < MMAP_AREA_END)
|
1383 | 9fa3e853 | bellard | mprotect((void *)addr, TARGET_PAGE_SIZE, PROT_READ);
|
1384 | 9fa3e853 | bellard | #endif
|
1385 | 9fa3e853 | bellard | } |
1386 | 9fa3e853 | bellard | |
1387 | 9fa3e853 | bellard | static inline void tlb_unprotect_code2(CPUTLBEntry *tlb_entry, |
1388 | 4f2ac237 | bellard | unsigned long phys_addr) |
1389 | 9fa3e853 | bellard | { |
1390 | 9fa3e853 | bellard | if ((tlb_entry->address & ~TARGET_PAGE_MASK) == IO_MEM_CODE &&
|
1391 | 9fa3e853 | bellard | ((tlb_entry->address & TARGET_PAGE_MASK) + tlb_entry->addend) == phys_addr) { |
1392 | 1ccde1cb | bellard | tlb_entry->address = (tlb_entry->address & TARGET_PAGE_MASK) | IO_MEM_NOTDIRTY; |
1393 | 9fa3e853 | bellard | } |
1394 | 9fa3e853 | bellard | } |
1395 | 9fa3e853 | bellard | |
1396 | 9fa3e853 | bellard | /* update the TLB so that writes in physical page 'phys_addr' are no longer
|
1397 | 9fa3e853 | bellard | tested self modifying code */
|
1398 | 4f2ac237 | bellard | static void tlb_unprotect_code_phys(CPUState *env, unsigned long phys_addr, target_ulong vaddr) |
1399 | 9fa3e853 | bellard | { |
1400 | 9fa3e853 | bellard | int i;
|
1401 | 9fa3e853 | bellard | |
1402 | 9fa3e853 | bellard | phys_addr &= TARGET_PAGE_MASK; |
1403 | 1ccde1cb | bellard | phys_addr += (long)phys_ram_base;
|
1404 | 1ccde1cb | bellard | i = (vaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
1405 | 1ccde1cb | bellard | tlb_unprotect_code2(&env->tlb_write[0][i], phys_addr);
|
1406 | 1ccde1cb | bellard | tlb_unprotect_code2(&env->tlb_write[1][i], phys_addr);
|
1407 | 1ccde1cb | bellard | } |
1408 | 1ccde1cb | bellard | |
1409 | 1ccde1cb | bellard | static inline void tlb_reset_dirty_range(CPUTLBEntry *tlb_entry, |
1410 | 1ccde1cb | bellard | unsigned long start, unsigned long length) |
1411 | 1ccde1cb | bellard | { |
1412 | 1ccde1cb | bellard | unsigned long addr; |
1413 | 1ccde1cb | bellard | if ((tlb_entry->address & ~TARGET_PAGE_MASK) == IO_MEM_RAM) {
|
1414 | 1ccde1cb | bellard | addr = (tlb_entry->address & TARGET_PAGE_MASK) + tlb_entry->addend; |
1415 | 1ccde1cb | bellard | if ((addr - start) < length) {
|
1416 | 1ccde1cb | bellard | tlb_entry->address = (tlb_entry->address & TARGET_PAGE_MASK) | IO_MEM_NOTDIRTY; |
1417 | 1ccde1cb | bellard | } |
1418 | 1ccde1cb | bellard | } |
1419 | 1ccde1cb | bellard | } |
1420 | 1ccde1cb | bellard | |
1421 | 1ccde1cb | bellard | void cpu_physical_memory_reset_dirty(target_ulong start, target_ulong end)
|
1422 | 1ccde1cb | bellard | { |
1423 | 1ccde1cb | bellard | CPUState *env; |
1424 | 4f2ac237 | bellard | unsigned long length, start1; |
1425 | 1ccde1cb | bellard | int i;
|
1426 | 1ccde1cb | bellard | |
1427 | 1ccde1cb | bellard | start &= TARGET_PAGE_MASK; |
1428 | 1ccde1cb | bellard | end = TARGET_PAGE_ALIGN(end); |
1429 | 1ccde1cb | bellard | |
1430 | 1ccde1cb | bellard | length = end - start; |
1431 | 1ccde1cb | bellard | if (length == 0) |
1432 | 1ccde1cb | bellard | return;
|
1433 | 1ccde1cb | bellard | memset(phys_ram_dirty + (start >> TARGET_PAGE_BITS), 0, length >> TARGET_PAGE_BITS);
|
1434 | 1ccde1cb | bellard | |
1435 | 1ccde1cb | bellard | env = cpu_single_env; |
1436 | 1ccde1cb | bellard | /* we modify the TLB cache so that the dirty bit will be set again
|
1437 | 1ccde1cb | bellard | when accessing the range */
|
1438 | 59817ccb | bellard | start1 = start + (unsigned long)phys_ram_base; |
1439 | 9fa3e853 | bellard | for(i = 0; i < CPU_TLB_SIZE; i++) |
1440 | 59817ccb | bellard | tlb_reset_dirty_range(&env->tlb_write[0][i], start1, length);
|
1441 | 9fa3e853 | bellard | for(i = 0; i < CPU_TLB_SIZE; i++) |
1442 | 59817ccb | bellard | tlb_reset_dirty_range(&env->tlb_write[1][i], start1, length);
|
1443 | 59817ccb | bellard | |
1444 | 59817ccb | bellard | #if !defined(CONFIG_SOFTMMU)
|
1445 | 59817ccb | bellard | /* XXX: this is expensive */
|
1446 | 59817ccb | bellard | { |
1447 | 59817ccb | bellard | VirtPageDesc *p; |
1448 | 59817ccb | bellard | int j;
|
1449 | 59817ccb | bellard | target_ulong addr; |
1450 | 59817ccb | bellard | |
1451 | 59817ccb | bellard | for(i = 0; i < L1_SIZE; i++) { |
1452 | 59817ccb | bellard | p = l1_virt_map[i]; |
1453 | 59817ccb | bellard | if (p) {
|
1454 | 59817ccb | bellard | addr = i << (TARGET_PAGE_BITS + L2_BITS); |
1455 | 59817ccb | bellard | for(j = 0; j < L2_SIZE; j++) { |
1456 | 59817ccb | bellard | if (p->valid_tag == virt_valid_tag &&
|
1457 | 59817ccb | bellard | p->phys_addr >= start && p->phys_addr < end && |
1458 | 59817ccb | bellard | (p->prot & PROT_WRITE)) { |
1459 | 59817ccb | bellard | if (addr < MMAP_AREA_END) {
|
1460 | 59817ccb | bellard | mprotect((void *)addr, TARGET_PAGE_SIZE,
|
1461 | 59817ccb | bellard | p->prot & ~PROT_WRITE); |
1462 | 59817ccb | bellard | } |
1463 | 59817ccb | bellard | } |
1464 | 59817ccb | bellard | addr += TARGET_PAGE_SIZE; |
1465 | 59817ccb | bellard | p++; |
1466 | 59817ccb | bellard | } |
1467 | 59817ccb | bellard | } |
1468 | 59817ccb | bellard | } |
1469 | 59817ccb | bellard | } |
1470 | 59817ccb | bellard | #endif
|
1471 | 1ccde1cb | bellard | } |
1472 | 1ccde1cb | bellard | |
1473 | 1ccde1cb | bellard | static inline void tlb_set_dirty1(CPUTLBEntry *tlb_entry, |
1474 | 1ccde1cb | bellard | unsigned long start) |
1475 | 1ccde1cb | bellard | { |
1476 | 1ccde1cb | bellard | unsigned long addr; |
1477 | 1ccde1cb | bellard | if ((tlb_entry->address & ~TARGET_PAGE_MASK) == IO_MEM_NOTDIRTY) {
|
1478 | 1ccde1cb | bellard | addr = (tlb_entry->address & TARGET_PAGE_MASK) + tlb_entry->addend; |
1479 | 1ccde1cb | bellard | if (addr == start) {
|
1480 | 1ccde1cb | bellard | tlb_entry->address = (tlb_entry->address & TARGET_PAGE_MASK) | IO_MEM_RAM; |
1481 | 1ccde1cb | bellard | } |
1482 | 1ccde1cb | bellard | } |
1483 | 1ccde1cb | bellard | } |
1484 | 1ccde1cb | bellard | |
1485 | 1ccde1cb | bellard | /* update the TLB corresponding to virtual page vaddr and phys addr
|
1486 | 1ccde1cb | bellard | addr so that it is no longer dirty */
|
1487 | 1ccde1cb | bellard | static inline void tlb_set_dirty(unsigned long addr, target_ulong vaddr) |
1488 | 1ccde1cb | bellard | { |
1489 | 1ccde1cb | bellard | CPUState *env = cpu_single_env; |
1490 | 1ccde1cb | bellard | int i;
|
1491 | 1ccde1cb | bellard | |
1492 | 1ccde1cb | bellard | phys_ram_dirty[(addr - (unsigned long)phys_ram_base) >> TARGET_PAGE_BITS] = 1; |
1493 | 1ccde1cb | bellard | |
1494 | 1ccde1cb | bellard | addr &= TARGET_PAGE_MASK; |
1495 | 1ccde1cb | bellard | i = (vaddr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
1496 | 1ccde1cb | bellard | tlb_set_dirty1(&env->tlb_write[0][i], addr);
|
1497 | 1ccde1cb | bellard | tlb_set_dirty1(&env->tlb_write[1][i], addr);
|
1498 | 9fa3e853 | bellard | } |
1499 | 9fa3e853 | bellard | |
1500 | 59817ccb | bellard | /* add a new TLB entry. At most one entry for a given virtual address
|
1501 | 59817ccb | bellard | is permitted. Return 0 if OK or 2 if the page could not be mapped
|
1502 | 59817ccb | bellard | (can only happen in non SOFTMMU mode for I/O pages or pages
|
1503 | 59817ccb | bellard | conflicting with the host address space). */
|
1504 | 2e12669a | bellard | int tlb_set_page(CPUState *env, target_ulong vaddr,
|
1505 | 2e12669a | bellard | target_phys_addr_t paddr, int prot,
|
1506 | 9fa3e853 | bellard | int is_user, int is_softmmu) |
1507 | 9fa3e853 | bellard | { |
1508 | 92e873b9 | bellard | PhysPageDesc *p; |
1509 | 4f2ac237 | bellard | unsigned long pd; |
1510 | 9fa3e853 | bellard | TranslationBlock *first_tb; |
1511 | 9fa3e853 | bellard | unsigned int index; |
1512 | 4f2ac237 | bellard | target_ulong address; |
1513 | 4f2ac237 | bellard | unsigned long addend; |
1514 | 9fa3e853 | bellard | int ret;
|
1515 | 9fa3e853 | bellard | |
1516 | 92e873b9 | bellard | p = phys_page_find(paddr >> TARGET_PAGE_BITS); |
1517 | 92e873b9 | bellard | first_tb = NULL;
|
1518 | 9fa3e853 | bellard | if (!p) {
|
1519 | 9fa3e853 | bellard | pd = IO_MEM_UNASSIGNED; |
1520 | 9fa3e853 | bellard | } else {
|
1521 | 92e873b9 | bellard | PageDesc *p1; |
1522 | 9fa3e853 | bellard | pd = p->phys_offset; |
1523 | 92e873b9 | bellard | if ((pd & ~TARGET_PAGE_MASK) <= IO_MEM_ROM) {
|
1524 | 92e873b9 | bellard | /* NOTE: we also allocate the page at this stage */
|
1525 | 92e873b9 | bellard | p1 = page_find_alloc(pd >> TARGET_PAGE_BITS); |
1526 | 92e873b9 | bellard | first_tb = p1->first_tb; |
1527 | 92e873b9 | bellard | } |
1528 | 9fa3e853 | bellard | } |
1529 | 9fa3e853 | bellard | #if defined(DEBUG_TLB)
|
1530 | 9fa3e853 | bellard | printf("tlb_set_page: vaddr=0x%08x paddr=0x%08x prot=%x u=%d c=%d smmu=%d pd=0x%08x\n",
|
1531 | 9fa3e853 | bellard | vaddr, paddr, prot, is_user, (first_tb != NULL), is_softmmu, pd);
|
1532 | 9fa3e853 | bellard | #endif
|
1533 | 9fa3e853 | bellard | |
1534 | 9fa3e853 | bellard | ret = 0;
|
1535 | 9fa3e853 | bellard | #if !defined(CONFIG_SOFTMMU)
|
1536 | 9fa3e853 | bellard | if (is_softmmu)
|
1537 | 9fa3e853 | bellard | #endif
|
1538 | 9fa3e853 | bellard | { |
1539 | 9fa3e853 | bellard | if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM) {
|
1540 | 9fa3e853 | bellard | /* IO memory case */
|
1541 | 9fa3e853 | bellard | address = vaddr | pd; |
1542 | 9fa3e853 | bellard | addend = paddr; |
1543 | 9fa3e853 | bellard | } else {
|
1544 | 9fa3e853 | bellard | /* standard memory */
|
1545 | 9fa3e853 | bellard | address = vaddr; |
1546 | 9fa3e853 | bellard | addend = (unsigned long)phys_ram_base + (pd & TARGET_PAGE_MASK); |
1547 | 9fa3e853 | bellard | } |
1548 | 9fa3e853 | bellard | |
1549 | 9fa3e853 | bellard | index = (vaddr >> 12) & (CPU_TLB_SIZE - 1); |
1550 | 9fa3e853 | bellard | addend -= vaddr; |
1551 | 67b915a5 | bellard | if (prot & PAGE_READ) {
|
1552 | 9fa3e853 | bellard | env->tlb_read[is_user][index].address = address; |
1553 | 9fa3e853 | bellard | env->tlb_read[is_user][index].addend = addend; |
1554 | 9fa3e853 | bellard | } else {
|
1555 | 9fa3e853 | bellard | env->tlb_read[is_user][index].address = -1;
|
1556 | 9fa3e853 | bellard | env->tlb_read[is_user][index].addend = -1;
|
1557 | 9fa3e853 | bellard | } |
1558 | 67b915a5 | bellard | if (prot & PAGE_WRITE) {
|
1559 | 9fa3e853 | bellard | if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_ROM) {
|
1560 | 9fa3e853 | bellard | /* ROM: access is ignored (same as unassigned) */
|
1561 | 9fa3e853 | bellard | env->tlb_write[is_user][index].address = vaddr | IO_MEM_ROM; |
1562 | 1ccde1cb | bellard | env->tlb_write[is_user][index].addend = addend; |
1563 | d720b93d | bellard | } else
|
1564 | d720b93d | bellard | /* XXX: the PowerPC code seems not ready to handle
|
1565 | d720b93d | bellard | self modifying code with DCBI */
|
1566 | d720b93d | bellard | #if defined(TARGET_HAS_SMC) || 1 |
1567 | d720b93d | bellard | if (first_tb) {
|
1568 | 9fa3e853 | bellard | /* if code is present, we use a specific memory
|
1569 | 9fa3e853 | bellard | handler. It works only for physical memory access */
|
1570 | 9fa3e853 | bellard | env->tlb_write[is_user][index].address = vaddr | IO_MEM_CODE; |
1571 | 1ccde1cb | bellard | env->tlb_write[is_user][index].addend = addend; |
1572 | d720b93d | bellard | } else
|
1573 | d720b93d | bellard | #endif
|
1574 | d720b93d | bellard | if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_RAM &&
|
1575 | 1ccde1cb | bellard | !cpu_physical_memory_is_dirty(pd)) { |
1576 | 1ccde1cb | bellard | env->tlb_write[is_user][index].address = vaddr | IO_MEM_NOTDIRTY; |
1577 | 1ccde1cb | bellard | env->tlb_write[is_user][index].addend = addend; |
1578 | 9fa3e853 | bellard | } else {
|
1579 | 9fa3e853 | bellard | env->tlb_write[is_user][index].address = address; |
1580 | 9fa3e853 | bellard | env->tlb_write[is_user][index].addend = addend; |
1581 | 9fa3e853 | bellard | } |
1582 | 9fa3e853 | bellard | } else {
|
1583 | 9fa3e853 | bellard | env->tlb_write[is_user][index].address = -1;
|
1584 | 9fa3e853 | bellard | env->tlb_write[is_user][index].addend = -1;
|
1585 | 9fa3e853 | bellard | } |
1586 | 9fa3e853 | bellard | } |
1587 | 9fa3e853 | bellard | #if !defined(CONFIG_SOFTMMU)
|
1588 | 9fa3e853 | bellard | else {
|
1589 | 9fa3e853 | bellard | if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM) {
|
1590 | 9fa3e853 | bellard | /* IO access: no mapping is done as it will be handled by the
|
1591 | 9fa3e853 | bellard | soft MMU */
|
1592 | 9fa3e853 | bellard | if (!(env->hflags & HF_SOFTMMU_MASK))
|
1593 | 9fa3e853 | bellard | ret = 2;
|
1594 | 9fa3e853 | bellard | } else {
|
1595 | 9fa3e853 | bellard | void *map_addr;
|
1596 | 59817ccb | bellard | |
1597 | 59817ccb | bellard | if (vaddr >= MMAP_AREA_END) {
|
1598 | 59817ccb | bellard | ret = 2;
|
1599 | 59817ccb | bellard | } else {
|
1600 | 59817ccb | bellard | if (prot & PROT_WRITE) {
|
1601 | 59817ccb | bellard | if ((pd & ~TARGET_PAGE_MASK) == IO_MEM_ROM ||
|
1602 | d720b93d | bellard | #if defined(TARGET_HAS_SMC) || 1 |
1603 | 59817ccb | bellard | first_tb || |
1604 | d720b93d | bellard | #endif
|
1605 | 59817ccb | bellard | ((pd & ~TARGET_PAGE_MASK) == IO_MEM_RAM && |
1606 | 59817ccb | bellard | !cpu_physical_memory_is_dirty(pd))) { |
1607 | 59817ccb | bellard | /* ROM: we do as if code was inside */
|
1608 | 59817ccb | bellard | /* if code is present, we only map as read only and save the
|
1609 | 59817ccb | bellard | original mapping */
|
1610 | 59817ccb | bellard | VirtPageDesc *vp; |
1611 | 59817ccb | bellard | |
1612 | 59817ccb | bellard | vp = virt_page_find_alloc(vaddr >> TARGET_PAGE_BITS); |
1613 | 59817ccb | bellard | vp->phys_addr = pd; |
1614 | 59817ccb | bellard | vp->prot = prot; |
1615 | 59817ccb | bellard | vp->valid_tag = virt_valid_tag; |
1616 | 59817ccb | bellard | prot &= ~PAGE_WRITE; |
1617 | 59817ccb | bellard | } |
1618 | 59817ccb | bellard | } |
1619 | 59817ccb | bellard | map_addr = mmap((void *)vaddr, TARGET_PAGE_SIZE, prot,
|
1620 | 59817ccb | bellard | MAP_SHARED | MAP_FIXED, phys_ram_fd, (pd & TARGET_PAGE_MASK)); |
1621 | 59817ccb | bellard | if (map_addr == MAP_FAILED) {
|
1622 | 59817ccb | bellard | cpu_abort(env, "mmap failed when mapped physical address 0x%08x to virtual address 0x%08x\n",
|
1623 | 59817ccb | bellard | paddr, vaddr); |
1624 | 9fa3e853 | bellard | } |
1625 | 9fa3e853 | bellard | } |
1626 | 9fa3e853 | bellard | } |
1627 | 9fa3e853 | bellard | } |
1628 | 9fa3e853 | bellard | #endif
|
1629 | 9fa3e853 | bellard | return ret;
|
1630 | 9fa3e853 | bellard | } |
1631 | 9fa3e853 | bellard | |
1632 | 9fa3e853 | bellard | /* called from signal handler: invalidate the code and unprotect the
|
1633 | 9fa3e853 | bellard | page. Return TRUE if the fault was succesfully handled. */
|
1634 | d720b93d | bellard | int page_unprotect(unsigned long addr, unsigned long pc, void *puc) |
1635 | 9fa3e853 | bellard | { |
1636 | 9fa3e853 | bellard | #if !defined(CONFIG_SOFTMMU)
|
1637 | 9fa3e853 | bellard | VirtPageDesc *vp; |
1638 | 9fa3e853 | bellard | |
1639 | 9fa3e853 | bellard | #if defined(DEBUG_TLB)
|
1640 | 9fa3e853 | bellard | printf("page_unprotect: addr=0x%08x\n", addr);
|
1641 | 9fa3e853 | bellard | #endif
|
1642 | 9fa3e853 | bellard | addr &= TARGET_PAGE_MASK; |
1643 | 59817ccb | bellard | |
1644 | 59817ccb | bellard | /* if it is not mapped, no need to worry here */
|
1645 | 59817ccb | bellard | if (addr >= MMAP_AREA_END)
|
1646 | 59817ccb | bellard | return 0; |
1647 | 9fa3e853 | bellard | vp = virt_page_find(addr >> TARGET_PAGE_BITS); |
1648 | 9fa3e853 | bellard | if (!vp)
|
1649 | 9fa3e853 | bellard | return 0; |
1650 | 9fa3e853 | bellard | /* NOTE: in this case, validate_tag is _not_ tested as it
|
1651 | 9fa3e853 | bellard | validates only the code TLB */
|
1652 | 9fa3e853 | bellard | if (vp->valid_tag != virt_valid_tag)
|
1653 | 9fa3e853 | bellard | return 0; |
1654 | 9fa3e853 | bellard | if (!(vp->prot & PAGE_WRITE))
|
1655 | 9fa3e853 | bellard | return 0; |
1656 | 9fa3e853 | bellard | #if defined(DEBUG_TLB)
|
1657 | 9fa3e853 | bellard | printf("page_unprotect: addr=0x%08x phys_addr=0x%08x prot=%x\n",
|
1658 | 9fa3e853 | bellard | addr, vp->phys_addr, vp->prot); |
1659 | 9fa3e853 | bellard | #endif
|
1660 | 59817ccb | bellard | if (mprotect((void *)addr, TARGET_PAGE_SIZE, vp->prot) < 0) |
1661 | 59817ccb | bellard | cpu_abort(cpu_single_env, "error mprotect addr=0x%lx prot=%d\n",
|
1662 | 59817ccb | bellard | (unsigned long)addr, vp->prot); |
1663 | d720b93d | bellard | /* set the dirty bit */
|
1664 | d720b93d | bellard | phys_ram_dirty[vp->phys_addr >> TARGET_PAGE_BITS] = 1;
|
1665 | d720b93d | bellard | /* flush the code inside */
|
1666 | d720b93d | bellard | tb_invalidate_phys_page(vp->phys_addr, pc, puc); |
1667 | 9fa3e853 | bellard | return 1; |
1668 | 9fa3e853 | bellard | #else
|
1669 | 9fa3e853 | bellard | return 0; |
1670 | 9fa3e853 | bellard | #endif
|
1671 | 33417e70 | bellard | } |
1672 | 33417e70 | bellard | |
1673 | 0124311e | bellard | #else
|
1674 | 0124311e | bellard | |
1675 | ee8b7021 | bellard | void tlb_flush(CPUState *env, int flush_global) |
1676 | 0124311e | bellard | { |
1677 | 0124311e | bellard | } |
1678 | 0124311e | bellard | |
1679 | 2e12669a | bellard | void tlb_flush_page(CPUState *env, target_ulong addr)
|
1680 | 0124311e | bellard | { |
1681 | 0124311e | bellard | } |
1682 | 0124311e | bellard | |
1683 | 2e12669a | bellard | int tlb_set_page(CPUState *env, target_ulong vaddr,
|
1684 | 2e12669a | bellard | target_phys_addr_t paddr, int prot,
|
1685 | 9fa3e853 | bellard | int is_user, int is_softmmu) |
1686 | 9fa3e853 | bellard | { |
1687 | 9fa3e853 | bellard | return 0; |
1688 | 9fa3e853 | bellard | } |
1689 | 0124311e | bellard | |
1690 | 9fa3e853 | bellard | /* dump memory mappings */
|
1691 | 9fa3e853 | bellard | void page_dump(FILE *f)
|
1692 | 33417e70 | bellard | { |
1693 | 9fa3e853 | bellard | unsigned long start, end; |
1694 | 9fa3e853 | bellard | int i, j, prot, prot1;
|
1695 | 9fa3e853 | bellard | PageDesc *p; |
1696 | 33417e70 | bellard | |
1697 | 9fa3e853 | bellard | fprintf(f, "%-8s %-8s %-8s %s\n",
|
1698 | 9fa3e853 | bellard | "start", "end", "size", "prot"); |
1699 | 9fa3e853 | bellard | start = -1;
|
1700 | 9fa3e853 | bellard | end = -1;
|
1701 | 9fa3e853 | bellard | prot = 0;
|
1702 | 9fa3e853 | bellard | for(i = 0; i <= L1_SIZE; i++) { |
1703 | 9fa3e853 | bellard | if (i < L1_SIZE)
|
1704 | 9fa3e853 | bellard | p = l1_map[i]; |
1705 | 9fa3e853 | bellard | else
|
1706 | 9fa3e853 | bellard | p = NULL;
|
1707 | 9fa3e853 | bellard | for(j = 0;j < L2_SIZE; j++) { |
1708 | 9fa3e853 | bellard | if (!p)
|
1709 | 9fa3e853 | bellard | prot1 = 0;
|
1710 | 9fa3e853 | bellard | else
|
1711 | 9fa3e853 | bellard | prot1 = p[j].flags; |
1712 | 9fa3e853 | bellard | if (prot1 != prot) {
|
1713 | 9fa3e853 | bellard | end = (i << (32 - L1_BITS)) | (j << TARGET_PAGE_BITS);
|
1714 | 9fa3e853 | bellard | if (start != -1) { |
1715 | 9fa3e853 | bellard | fprintf(f, "%08lx-%08lx %08lx %c%c%c\n",
|
1716 | 9fa3e853 | bellard | start, end, end - start, |
1717 | 9fa3e853 | bellard | prot & PAGE_READ ? 'r' : '-', |
1718 | 9fa3e853 | bellard | prot & PAGE_WRITE ? 'w' : '-', |
1719 | 9fa3e853 | bellard | prot & PAGE_EXEC ? 'x' : '-'); |
1720 | 9fa3e853 | bellard | } |
1721 | 9fa3e853 | bellard | if (prot1 != 0) |
1722 | 9fa3e853 | bellard | start = end; |
1723 | 9fa3e853 | bellard | else
|
1724 | 9fa3e853 | bellard | start = -1;
|
1725 | 9fa3e853 | bellard | prot = prot1; |
1726 | 9fa3e853 | bellard | } |
1727 | 9fa3e853 | bellard | if (!p)
|
1728 | 9fa3e853 | bellard | break;
|
1729 | 9fa3e853 | bellard | } |
1730 | 33417e70 | bellard | } |
1731 | 33417e70 | bellard | } |
1732 | 33417e70 | bellard | |
1733 | 9fa3e853 | bellard | int page_get_flags(unsigned long address) |
1734 | 33417e70 | bellard | { |
1735 | 9fa3e853 | bellard | PageDesc *p; |
1736 | 9fa3e853 | bellard | |
1737 | 9fa3e853 | bellard | p = page_find(address >> TARGET_PAGE_BITS); |
1738 | 33417e70 | bellard | if (!p)
|
1739 | 9fa3e853 | bellard | return 0; |
1740 | 9fa3e853 | bellard | return p->flags;
|
1741 | 9fa3e853 | bellard | } |
1742 | 9fa3e853 | bellard | |
1743 | 9fa3e853 | bellard | /* modify the flags of a page and invalidate the code if
|
1744 | 9fa3e853 | bellard | necessary. The flag PAGE_WRITE_ORG is positionned automatically
|
1745 | 9fa3e853 | bellard | depending on PAGE_WRITE */
|
1746 | 9fa3e853 | bellard | void page_set_flags(unsigned long start, unsigned long end, int flags) |
1747 | 9fa3e853 | bellard | { |
1748 | 9fa3e853 | bellard | PageDesc *p; |
1749 | 9fa3e853 | bellard | unsigned long addr; |
1750 | 9fa3e853 | bellard | |
1751 | 9fa3e853 | bellard | start = start & TARGET_PAGE_MASK; |
1752 | 9fa3e853 | bellard | end = TARGET_PAGE_ALIGN(end); |
1753 | 9fa3e853 | bellard | if (flags & PAGE_WRITE)
|
1754 | 9fa3e853 | bellard | flags |= PAGE_WRITE_ORG; |
1755 | 9fa3e853 | bellard | spin_lock(&tb_lock); |
1756 | 9fa3e853 | bellard | for(addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
|
1757 | 9fa3e853 | bellard | p = page_find_alloc(addr >> TARGET_PAGE_BITS); |
1758 | 9fa3e853 | bellard | /* if the write protection is set, then we invalidate the code
|
1759 | 9fa3e853 | bellard | inside */
|
1760 | 9fa3e853 | bellard | if (!(p->flags & PAGE_WRITE) &&
|
1761 | 9fa3e853 | bellard | (flags & PAGE_WRITE) && |
1762 | 9fa3e853 | bellard | p->first_tb) { |
1763 | d720b93d | bellard | tb_invalidate_phys_page(addr, 0, NULL); |
1764 | 9fa3e853 | bellard | } |
1765 | 9fa3e853 | bellard | p->flags = flags; |
1766 | 9fa3e853 | bellard | } |
1767 | 9fa3e853 | bellard | spin_unlock(&tb_lock); |
1768 | 33417e70 | bellard | } |
1769 | 33417e70 | bellard | |
1770 | 9fa3e853 | bellard | /* called from signal handler: invalidate the code and unprotect the
|
1771 | 9fa3e853 | bellard | page. Return TRUE if the fault was succesfully handled. */
|
1772 | d720b93d | bellard | int page_unprotect(unsigned long address, unsigned long pc, void *puc) |
1773 | 9fa3e853 | bellard | { |
1774 | 9fa3e853 | bellard | unsigned int page_index, prot, pindex; |
1775 | 9fa3e853 | bellard | PageDesc *p, *p1; |
1776 | 9fa3e853 | bellard | unsigned long host_start, host_end, addr; |
1777 | 9fa3e853 | bellard | |
1778 | 83fb7adf | bellard | host_start = address & qemu_host_page_mask; |
1779 | 9fa3e853 | bellard | page_index = host_start >> TARGET_PAGE_BITS; |
1780 | 9fa3e853 | bellard | p1 = page_find(page_index); |
1781 | 9fa3e853 | bellard | if (!p1)
|
1782 | 9fa3e853 | bellard | return 0; |
1783 | 83fb7adf | bellard | host_end = host_start + qemu_host_page_size; |
1784 | 9fa3e853 | bellard | p = p1; |
1785 | 9fa3e853 | bellard | prot = 0;
|
1786 | 9fa3e853 | bellard | for(addr = host_start;addr < host_end; addr += TARGET_PAGE_SIZE) {
|
1787 | 9fa3e853 | bellard | prot |= p->flags; |
1788 | 9fa3e853 | bellard | p++; |
1789 | 9fa3e853 | bellard | } |
1790 | 9fa3e853 | bellard | /* if the page was really writable, then we change its
|
1791 | 9fa3e853 | bellard | protection back to writable */
|
1792 | 9fa3e853 | bellard | if (prot & PAGE_WRITE_ORG) {
|
1793 | 9fa3e853 | bellard | pindex = (address - host_start) >> TARGET_PAGE_BITS; |
1794 | 9fa3e853 | bellard | if (!(p1[pindex].flags & PAGE_WRITE)) {
|
1795 | 83fb7adf | bellard | mprotect((void *)host_start, qemu_host_page_size,
|
1796 | 9fa3e853 | bellard | (prot & PAGE_BITS) | PAGE_WRITE); |
1797 | 9fa3e853 | bellard | p1[pindex].flags |= PAGE_WRITE; |
1798 | 9fa3e853 | bellard | /* and since the content will be modified, we must invalidate
|
1799 | 9fa3e853 | bellard | the corresponding translated code. */
|
1800 | d720b93d | bellard | tb_invalidate_phys_page(address, pc, puc); |
1801 | 9fa3e853 | bellard | #ifdef DEBUG_TB_CHECK
|
1802 | 9fa3e853 | bellard | tb_invalidate_check(address); |
1803 | 9fa3e853 | bellard | #endif
|
1804 | 9fa3e853 | bellard | return 1; |
1805 | 9fa3e853 | bellard | } |
1806 | 9fa3e853 | bellard | } |
1807 | 9fa3e853 | bellard | return 0; |
1808 | 9fa3e853 | bellard | } |
1809 | 9fa3e853 | bellard | |
1810 | 9fa3e853 | bellard | /* call this function when system calls directly modify a memory area */
|
1811 | 9fa3e853 | bellard | void page_unprotect_range(uint8_t *data, unsigned long data_size) |
1812 | 9fa3e853 | bellard | { |
1813 | 9fa3e853 | bellard | unsigned long start, end, addr; |
1814 | 9fa3e853 | bellard | |
1815 | 9fa3e853 | bellard | start = (unsigned long)data; |
1816 | 9fa3e853 | bellard | end = start + data_size; |
1817 | 9fa3e853 | bellard | start &= TARGET_PAGE_MASK; |
1818 | 9fa3e853 | bellard | end = TARGET_PAGE_ALIGN(end); |
1819 | 9fa3e853 | bellard | for(addr = start; addr < end; addr += TARGET_PAGE_SIZE) {
|
1820 | d720b93d | bellard | page_unprotect(addr, 0, NULL); |
1821 | 9fa3e853 | bellard | } |
1822 | 9fa3e853 | bellard | } |
1823 | 9fa3e853 | bellard | |
1824 | 1ccde1cb | bellard | static inline void tlb_set_dirty(unsigned long addr, target_ulong vaddr) |
1825 | 1ccde1cb | bellard | { |
1826 | 1ccde1cb | bellard | } |
1827 | 9fa3e853 | bellard | #endif /* defined(CONFIG_USER_ONLY) */ |
1828 | 9fa3e853 | bellard | |
1829 | 33417e70 | bellard | /* register physical memory. 'size' must be a multiple of the target
|
1830 | 33417e70 | bellard | page size. If (phys_offset & ~TARGET_PAGE_MASK) != 0, then it is an
|
1831 | 33417e70 | bellard | io memory page */
|
1832 | 2e12669a | bellard | void cpu_register_physical_memory(target_phys_addr_t start_addr,
|
1833 | 2e12669a | bellard | unsigned long size, |
1834 | 2e12669a | bellard | unsigned long phys_offset) |
1835 | 33417e70 | bellard | { |
1836 | 33417e70 | bellard | unsigned long addr, end_addr; |
1837 | 92e873b9 | bellard | PhysPageDesc *p; |
1838 | 33417e70 | bellard | |
1839 | 5fd386f6 | bellard | size = (size + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK;
|
1840 | 33417e70 | bellard | end_addr = start_addr + size; |
1841 | 5fd386f6 | bellard | for(addr = start_addr; addr != end_addr; addr += TARGET_PAGE_SIZE) {
|
1842 | 92e873b9 | bellard | p = phys_page_find_alloc(addr >> TARGET_PAGE_BITS); |
1843 | 9fa3e853 | bellard | p->phys_offset = phys_offset; |
1844 | 9fa3e853 | bellard | if ((phys_offset & ~TARGET_PAGE_MASK) <= IO_MEM_ROM)
|
1845 | 33417e70 | bellard | phys_offset += TARGET_PAGE_SIZE; |
1846 | 33417e70 | bellard | } |
1847 | 33417e70 | bellard | } |
1848 | 33417e70 | bellard | |
1849 | a4193c8a | bellard | static uint32_t unassigned_mem_readb(void *opaque, target_phys_addr_t addr) |
1850 | 33417e70 | bellard | { |
1851 | 33417e70 | bellard | return 0; |
1852 | 33417e70 | bellard | } |
1853 | 33417e70 | bellard | |
1854 | a4193c8a | bellard | static void unassigned_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
1855 | 33417e70 | bellard | { |
1856 | 33417e70 | bellard | } |
1857 | 33417e70 | bellard | |
1858 | 33417e70 | bellard | static CPUReadMemoryFunc *unassigned_mem_read[3] = { |
1859 | 33417e70 | bellard | unassigned_mem_readb, |
1860 | 33417e70 | bellard | unassigned_mem_readb, |
1861 | 33417e70 | bellard | unassigned_mem_readb, |
1862 | 33417e70 | bellard | }; |
1863 | 33417e70 | bellard | |
1864 | 33417e70 | bellard | static CPUWriteMemoryFunc *unassigned_mem_write[3] = { |
1865 | 33417e70 | bellard | unassigned_mem_writeb, |
1866 | 33417e70 | bellard | unassigned_mem_writeb, |
1867 | 33417e70 | bellard | unassigned_mem_writeb, |
1868 | 33417e70 | bellard | }; |
1869 | 33417e70 | bellard | |
1870 | 9fa3e853 | bellard | /* self modifying code support in soft mmu mode : writing to a page
|
1871 | 9fa3e853 | bellard | containing code comes to these functions */
|
1872 | 9fa3e853 | bellard | |
1873 | a4193c8a | bellard | static void code_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
1874 | 9fa3e853 | bellard | { |
1875 | 1ccde1cb | bellard | unsigned long phys_addr; |
1876 | 1ccde1cb | bellard | |
1877 | 274da6b2 | bellard | phys_addr = addr - (unsigned long)phys_ram_base; |
1878 | 9fa3e853 | bellard | #if !defined(CONFIG_USER_ONLY)
|
1879 | d720b93d | bellard | tb_invalidate_phys_page_fast(phys_addr, 1);
|
1880 | 9fa3e853 | bellard | #endif
|
1881 | c27004ec | bellard | stb_p((uint8_t *)(long)addr, val);
|
1882 | 1ccde1cb | bellard | phys_ram_dirty[phys_addr >> TARGET_PAGE_BITS] = 1;
|
1883 | 9fa3e853 | bellard | } |
1884 | 9fa3e853 | bellard | |
1885 | a4193c8a | bellard | static void code_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
1886 | 9fa3e853 | bellard | { |
1887 | 1ccde1cb | bellard | unsigned long phys_addr; |
1888 | 1ccde1cb | bellard | |
1889 | 274da6b2 | bellard | phys_addr = addr - (unsigned long)phys_ram_base; |
1890 | 9fa3e853 | bellard | #if !defined(CONFIG_USER_ONLY)
|
1891 | d720b93d | bellard | tb_invalidate_phys_page_fast(phys_addr, 2);
|
1892 | 9fa3e853 | bellard | #endif
|
1893 | c27004ec | bellard | stw_p((uint8_t *)(long)addr, val);
|
1894 | 1ccde1cb | bellard | phys_ram_dirty[phys_addr >> TARGET_PAGE_BITS] = 1;
|
1895 | 9fa3e853 | bellard | } |
1896 | 9fa3e853 | bellard | |
1897 | a4193c8a | bellard | static void code_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
1898 | 9fa3e853 | bellard | { |
1899 | 1ccde1cb | bellard | unsigned long phys_addr; |
1900 | 1ccde1cb | bellard | |
1901 | 274da6b2 | bellard | phys_addr = addr - (unsigned long)phys_ram_base; |
1902 | 9fa3e853 | bellard | #if !defined(CONFIG_USER_ONLY)
|
1903 | d720b93d | bellard | tb_invalidate_phys_page_fast(phys_addr, 4);
|
1904 | 9fa3e853 | bellard | #endif
|
1905 | c27004ec | bellard | stl_p((uint8_t *)(long)addr, val);
|
1906 | 1ccde1cb | bellard | phys_ram_dirty[phys_addr >> TARGET_PAGE_BITS] = 1;
|
1907 | 9fa3e853 | bellard | } |
1908 | 9fa3e853 | bellard | |
1909 | 9fa3e853 | bellard | static CPUReadMemoryFunc *code_mem_read[3] = { |
1910 | 9fa3e853 | bellard | NULL, /* never used */ |
1911 | 9fa3e853 | bellard | NULL, /* never used */ |
1912 | 9fa3e853 | bellard | NULL, /* never used */ |
1913 | 9fa3e853 | bellard | }; |
1914 | 9fa3e853 | bellard | |
1915 | 9fa3e853 | bellard | static CPUWriteMemoryFunc *code_mem_write[3] = { |
1916 | 9fa3e853 | bellard | code_mem_writeb, |
1917 | 9fa3e853 | bellard | code_mem_writew, |
1918 | 9fa3e853 | bellard | code_mem_writel, |
1919 | 9fa3e853 | bellard | }; |
1920 | 33417e70 | bellard | |
1921 | a4193c8a | bellard | static void notdirty_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
1922 | 1ccde1cb | bellard | { |
1923 | c27004ec | bellard | stb_p((uint8_t *)(long)addr, val);
|
1924 | d720b93d | bellard | tlb_set_dirty(addr, cpu_single_env->mem_write_vaddr); |
1925 | 1ccde1cb | bellard | } |
1926 | 1ccde1cb | bellard | |
1927 | a4193c8a | bellard | static void notdirty_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
1928 | 1ccde1cb | bellard | { |
1929 | c27004ec | bellard | stw_p((uint8_t *)(long)addr, val);
|
1930 | d720b93d | bellard | tlb_set_dirty(addr, cpu_single_env->mem_write_vaddr); |
1931 | 1ccde1cb | bellard | } |
1932 | 1ccde1cb | bellard | |
1933 | a4193c8a | bellard | static void notdirty_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
1934 | 1ccde1cb | bellard | { |
1935 | c27004ec | bellard | stl_p((uint8_t *)(long)addr, val);
|
1936 | d720b93d | bellard | tlb_set_dirty(addr, cpu_single_env->mem_write_vaddr); |
1937 | 1ccde1cb | bellard | } |
1938 | 1ccde1cb | bellard | |
1939 | 1ccde1cb | bellard | static CPUWriteMemoryFunc *notdirty_mem_write[3] = { |
1940 | 1ccde1cb | bellard | notdirty_mem_writeb, |
1941 | 1ccde1cb | bellard | notdirty_mem_writew, |
1942 | 1ccde1cb | bellard | notdirty_mem_writel, |
1943 | 1ccde1cb | bellard | }; |
1944 | 1ccde1cb | bellard | |
1945 | 33417e70 | bellard | static void io_mem_init(void) |
1946 | 33417e70 | bellard | { |
1947 | a4193c8a | bellard | cpu_register_io_memory(IO_MEM_ROM >> IO_MEM_SHIFT, code_mem_read, unassigned_mem_write, NULL);
|
1948 | a4193c8a | bellard | cpu_register_io_memory(IO_MEM_UNASSIGNED >> IO_MEM_SHIFT, unassigned_mem_read, unassigned_mem_write, NULL);
|
1949 | a4193c8a | bellard | cpu_register_io_memory(IO_MEM_CODE >> IO_MEM_SHIFT, code_mem_read, code_mem_write, NULL);
|
1950 | a4193c8a | bellard | cpu_register_io_memory(IO_MEM_NOTDIRTY >> IO_MEM_SHIFT, code_mem_read, notdirty_mem_write, NULL);
|
1951 | 1ccde1cb | bellard | io_mem_nb = 5;
|
1952 | 1ccde1cb | bellard | |
1953 | 1ccde1cb | bellard | /* alloc dirty bits array */
|
1954 | 59817ccb | bellard | phys_ram_dirty = qemu_malloc(phys_ram_size >> TARGET_PAGE_BITS); |
1955 | 33417e70 | bellard | } |
1956 | 33417e70 | bellard | |
1957 | 33417e70 | bellard | /* mem_read and mem_write are arrays of functions containing the
|
1958 | 33417e70 | bellard | function to access byte (index 0), word (index 1) and dword (index
|
1959 | 33417e70 | bellard | 2). All functions must be supplied. If io_index is non zero, the
|
1960 | 33417e70 | bellard | corresponding io zone is modified. If it is zero, a new io zone is
|
1961 | 33417e70 | bellard | allocated. The return value can be used with
|
1962 | 33417e70 | bellard | cpu_register_physical_memory(). (-1) is returned if error. */
|
1963 | 33417e70 | bellard | int cpu_register_io_memory(int io_index, |
1964 | 33417e70 | bellard | CPUReadMemoryFunc **mem_read, |
1965 | a4193c8a | bellard | CPUWriteMemoryFunc **mem_write, |
1966 | a4193c8a | bellard | void *opaque)
|
1967 | 33417e70 | bellard | { |
1968 | 33417e70 | bellard | int i;
|
1969 | 33417e70 | bellard | |
1970 | 33417e70 | bellard | if (io_index <= 0) { |
1971 | 33417e70 | bellard | if (io_index >= IO_MEM_NB_ENTRIES)
|
1972 | 33417e70 | bellard | return -1; |
1973 | 33417e70 | bellard | io_index = io_mem_nb++; |
1974 | 33417e70 | bellard | } else {
|
1975 | 33417e70 | bellard | if (io_index >= IO_MEM_NB_ENTRIES)
|
1976 | 33417e70 | bellard | return -1; |
1977 | 33417e70 | bellard | } |
1978 | 33417e70 | bellard | |
1979 | 33417e70 | bellard | for(i = 0;i < 3; i++) { |
1980 | 33417e70 | bellard | io_mem_read[io_index][i] = mem_read[i]; |
1981 | 33417e70 | bellard | io_mem_write[io_index][i] = mem_write[i]; |
1982 | 33417e70 | bellard | } |
1983 | a4193c8a | bellard | io_mem_opaque[io_index] = opaque; |
1984 | 33417e70 | bellard | return io_index << IO_MEM_SHIFT;
|
1985 | 33417e70 | bellard | } |
1986 | 61382a50 | bellard | |
1987 | 8926b517 | bellard | CPUWriteMemoryFunc **cpu_get_io_memory_write(int io_index)
|
1988 | 8926b517 | bellard | { |
1989 | 8926b517 | bellard | return io_mem_write[io_index >> IO_MEM_SHIFT];
|
1990 | 8926b517 | bellard | } |
1991 | 8926b517 | bellard | |
1992 | 8926b517 | bellard | CPUReadMemoryFunc **cpu_get_io_memory_read(int io_index)
|
1993 | 8926b517 | bellard | { |
1994 | 8926b517 | bellard | return io_mem_read[io_index >> IO_MEM_SHIFT];
|
1995 | 8926b517 | bellard | } |
1996 | 8926b517 | bellard | |
1997 | 13eb76e0 | bellard | /* physical memory access (slow version, mainly for debug) */
|
1998 | 13eb76e0 | bellard | #if defined(CONFIG_USER_ONLY)
|
1999 | 2e12669a | bellard | void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
|
2000 | 13eb76e0 | bellard | int len, int is_write) |
2001 | 13eb76e0 | bellard | { |
2002 | 13eb76e0 | bellard | int l, flags;
|
2003 | 13eb76e0 | bellard | target_ulong page; |
2004 | 13eb76e0 | bellard | |
2005 | 13eb76e0 | bellard | while (len > 0) { |
2006 | 13eb76e0 | bellard | page = addr & TARGET_PAGE_MASK; |
2007 | 13eb76e0 | bellard | l = (page + TARGET_PAGE_SIZE) - addr; |
2008 | 13eb76e0 | bellard | if (l > len)
|
2009 | 13eb76e0 | bellard | l = len; |
2010 | 13eb76e0 | bellard | flags = page_get_flags(page); |
2011 | 13eb76e0 | bellard | if (!(flags & PAGE_VALID))
|
2012 | 13eb76e0 | bellard | return;
|
2013 | 13eb76e0 | bellard | if (is_write) {
|
2014 | 13eb76e0 | bellard | if (!(flags & PAGE_WRITE))
|
2015 | 13eb76e0 | bellard | return;
|
2016 | 13eb76e0 | bellard | memcpy((uint8_t *)addr, buf, len); |
2017 | 13eb76e0 | bellard | } else {
|
2018 | 13eb76e0 | bellard | if (!(flags & PAGE_READ))
|
2019 | 13eb76e0 | bellard | return;
|
2020 | 13eb76e0 | bellard | memcpy(buf, (uint8_t *)addr, len); |
2021 | 13eb76e0 | bellard | } |
2022 | 13eb76e0 | bellard | len -= l; |
2023 | 13eb76e0 | bellard | buf += l; |
2024 | 13eb76e0 | bellard | addr += l; |
2025 | 13eb76e0 | bellard | } |
2026 | 13eb76e0 | bellard | } |
2027 | 13eb76e0 | bellard | #else
|
2028 | 2e12669a | bellard | void cpu_physical_memory_rw(target_phys_addr_t addr, uint8_t *buf,
|
2029 | 13eb76e0 | bellard | int len, int is_write) |
2030 | 13eb76e0 | bellard | { |
2031 | 13eb76e0 | bellard | int l, io_index;
|
2032 | 13eb76e0 | bellard | uint8_t *ptr; |
2033 | 13eb76e0 | bellard | uint32_t val; |
2034 | 2e12669a | bellard | target_phys_addr_t page; |
2035 | 2e12669a | bellard | unsigned long pd; |
2036 | 92e873b9 | bellard | PhysPageDesc *p; |
2037 | 13eb76e0 | bellard | |
2038 | 13eb76e0 | bellard | while (len > 0) { |
2039 | 13eb76e0 | bellard | page = addr & TARGET_PAGE_MASK; |
2040 | 13eb76e0 | bellard | l = (page + TARGET_PAGE_SIZE) - addr; |
2041 | 13eb76e0 | bellard | if (l > len)
|
2042 | 13eb76e0 | bellard | l = len; |
2043 | 92e873b9 | bellard | p = phys_page_find(page >> TARGET_PAGE_BITS); |
2044 | 13eb76e0 | bellard | if (!p) {
|
2045 | 13eb76e0 | bellard | pd = IO_MEM_UNASSIGNED; |
2046 | 13eb76e0 | bellard | } else {
|
2047 | 13eb76e0 | bellard | pd = p->phys_offset; |
2048 | 13eb76e0 | bellard | } |
2049 | 13eb76e0 | bellard | |
2050 | 13eb76e0 | bellard | if (is_write) {
|
2051 | 13eb76e0 | bellard | if ((pd & ~TARGET_PAGE_MASK) != 0) { |
2052 | 13eb76e0 | bellard | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
|
2053 | 13eb76e0 | bellard | if (l >= 4 && ((addr & 3) == 0)) { |
2054 | 13eb76e0 | bellard | /* 32 bit read access */
|
2055 | c27004ec | bellard | val = ldl_p(buf); |
2056 | a4193c8a | bellard | io_mem_write[io_index][2](io_mem_opaque[io_index], addr, val);
|
2057 | 13eb76e0 | bellard | l = 4;
|
2058 | 13eb76e0 | bellard | } else if (l >= 2 && ((addr & 1) == 0)) { |
2059 | 13eb76e0 | bellard | /* 16 bit read access */
|
2060 | c27004ec | bellard | val = lduw_p(buf); |
2061 | a4193c8a | bellard | io_mem_write[io_index][1](io_mem_opaque[io_index], addr, val);
|
2062 | 13eb76e0 | bellard | l = 2;
|
2063 | 13eb76e0 | bellard | } else {
|
2064 | 13eb76e0 | bellard | /* 8 bit access */
|
2065 | c27004ec | bellard | val = ldub_p(buf); |
2066 | a4193c8a | bellard | io_mem_write[io_index][0](io_mem_opaque[io_index], addr, val);
|
2067 | 13eb76e0 | bellard | l = 1;
|
2068 | 13eb76e0 | bellard | } |
2069 | 13eb76e0 | bellard | } else {
|
2070 | b448f2f3 | bellard | unsigned long addr1; |
2071 | b448f2f3 | bellard | addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK); |
2072 | 13eb76e0 | bellard | /* RAM case */
|
2073 | b448f2f3 | bellard | ptr = phys_ram_base + addr1; |
2074 | 13eb76e0 | bellard | memcpy(ptr, buf, l); |
2075 | b448f2f3 | bellard | /* invalidate code */
|
2076 | b448f2f3 | bellard | tb_invalidate_phys_page_range(addr1, addr1 + l, 0);
|
2077 | b448f2f3 | bellard | /* set dirty bit */
|
2078 | b448f2f3 | bellard | phys_ram_dirty[page >> TARGET_PAGE_BITS] = 1;
|
2079 | 13eb76e0 | bellard | } |
2080 | 13eb76e0 | bellard | } else {
|
2081 | 13eb76e0 | bellard | if ((pd & ~TARGET_PAGE_MASK) > IO_MEM_ROM &&
|
2082 | 13eb76e0 | bellard | (pd & ~TARGET_PAGE_MASK) != IO_MEM_CODE) { |
2083 | 13eb76e0 | bellard | /* I/O case */
|
2084 | 13eb76e0 | bellard | io_index = (pd >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
|
2085 | 13eb76e0 | bellard | if (l >= 4 && ((addr & 3) == 0)) { |
2086 | 13eb76e0 | bellard | /* 32 bit read access */
|
2087 | a4193c8a | bellard | val = io_mem_read[io_index][2](io_mem_opaque[io_index], addr);
|
2088 | c27004ec | bellard | stl_p(buf, val); |
2089 | 13eb76e0 | bellard | l = 4;
|
2090 | 13eb76e0 | bellard | } else if (l >= 2 && ((addr & 1) == 0)) { |
2091 | 13eb76e0 | bellard | /* 16 bit read access */
|
2092 | a4193c8a | bellard | val = io_mem_read[io_index][1](io_mem_opaque[io_index], addr);
|
2093 | c27004ec | bellard | stw_p(buf, val); |
2094 | 13eb76e0 | bellard | l = 2;
|
2095 | 13eb76e0 | bellard | } else {
|
2096 | 13eb76e0 | bellard | /* 8 bit access */
|
2097 | a4193c8a | bellard | val = io_mem_read[io_index][0](io_mem_opaque[io_index], addr);
|
2098 | c27004ec | bellard | stb_p(buf, val); |
2099 | 13eb76e0 | bellard | l = 1;
|
2100 | 13eb76e0 | bellard | } |
2101 | 13eb76e0 | bellard | } else {
|
2102 | 13eb76e0 | bellard | /* RAM case */
|
2103 | 13eb76e0 | bellard | ptr = phys_ram_base + (pd & TARGET_PAGE_MASK) + |
2104 | 13eb76e0 | bellard | (addr & ~TARGET_PAGE_MASK); |
2105 | 13eb76e0 | bellard | memcpy(buf, ptr, l); |
2106 | 13eb76e0 | bellard | } |
2107 | 13eb76e0 | bellard | } |
2108 | 13eb76e0 | bellard | len -= l; |
2109 | 13eb76e0 | bellard | buf += l; |
2110 | 13eb76e0 | bellard | addr += l; |
2111 | 13eb76e0 | bellard | } |
2112 | 13eb76e0 | bellard | } |
2113 | 13eb76e0 | bellard | #endif
|
2114 | 13eb76e0 | bellard | |
2115 | 13eb76e0 | bellard | /* virtual memory access for debug */
|
2116 | b448f2f3 | bellard | int cpu_memory_rw_debug(CPUState *env, target_ulong addr,
|
2117 | b448f2f3 | bellard | uint8_t *buf, int len, int is_write) |
2118 | 13eb76e0 | bellard | { |
2119 | 13eb76e0 | bellard | int l;
|
2120 | 13eb76e0 | bellard | target_ulong page, phys_addr; |
2121 | 13eb76e0 | bellard | |
2122 | 13eb76e0 | bellard | while (len > 0) { |
2123 | 13eb76e0 | bellard | page = addr & TARGET_PAGE_MASK; |
2124 | 13eb76e0 | bellard | phys_addr = cpu_get_phys_page_debug(env, page); |
2125 | 13eb76e0 | bellard | /* if no physical page mapped, return an error */
|
2126 | 13eb76e0 | bellard | if (phys_addr == -1) |
2127 | 13eb76e0 | bellard | return -1; |
2128 | 13eb76e0 | bellard | l = (page + TARGET_PAGE_SIZE) - addr; |
2129 | 13eb76e0 | bellard | if (l > len)
|
2130 | 13eb76e0 | bellard | l = len; |
2131 | b448f2f3 | bellard | cpu_physical_memory_rw(phys_addr + (addr & ~TARGET_PAGE_MASK), |
2132 | b448f2f3 | bellard | buf, l, is_write); |
2133 | 13eb76e0 | bellard | len -= l; |
2134 | 13eb76e0 | bellard | buf += l; |
2135 | 13eb76e0 | bellard | addr += l; |
2136 | 13eb76e0 | bellard | } |
2137 | 13eb76e0 | bellard | return 0; |
2138 | 13eb76e0 | bellard | } |
2139 | 13eb76e0 | bellard | |
2140 | 61382a50 | bellard | #if !defined(CONFIG_USER_ONLY)
|
2141 | 61382a50 | bellard | |
2142 | 61382a50 | bellard | #define MMUSUFFIX _cmmu
|
2143 | 61382a50 | bellard | #define GETPC() NULL |
2144 | 61382a50 | bellard | #define env cpu_single_env
|
2145 | b769d8fe | bellard | #define SOFTMMU_CODE_ACCESS
|
2146 | 61382a50 | bellard | |
2147 | 61382a50 | bellard | #define SHIFT 0 |
2148 | 61382a50 | bellard | #include "softmmu_template.h" |
2149 | 61382a50 | bellard | |
2150 | 61382a50 | bellard | #define SHIFT 1 |
2151 | 61382a50 | bellard | #include "softmmu_template.h" |
2152 | 61382a50 | bellard | |
2153 | 61382a50 | bellard | #define SHIFT 2 |
2154 | 61382a50 | bellard | #include "softmmu_template.h" |
2155 | 61382a50 | bellard | |
2156 | 61382a50 | bellard | #define SHIFT 3 |
2157 | 61382a50 | bellard | #include "softmmu_template.h" |
2158 | 61382a50 | bellard | |
2159 | 61382a50 | bellard | #undef env
|
2160 | 61382a50 | bellard | |
2161 | 61382a50 | bellard | #endif |