Commit | Line | Data |
---|---|---|
957a9eac | 1 | /* |
f89d8471 | 2 | * (C) GraÅžvydas "notaz" Ignotas, 2008-2012 |
957a9eac | 3 | * |
4 | * This work is licensed under the terms of any of these licenses | |
5 | * (at your option): | |
6 | * - GNU GPL, version 2 or later. | |
7 | * - GNU LGPL, version 2.1 or later. | |
f89d8471 | 8 | * - MAME license. |
957a9eac | 9 | * See the COPYING file in the top-level directory. |
10 | */ | |
11 | ||
705bdf63 | 12 | #define _GNU_SOURCE 1 |
4ab30ad4 | 13 | #include <stdio.h> |
d2f29611 | 14 | #include <string.h> |
2b9f9c51 | 15 | #include <stdarg.h> |
b0ce6fa8 | 16 | #include <stdint.h> |
049a6b3e | 17 | #include <dirent.h> |
4ab30ad4 | 18 | #include <sys/time.h> |
19 | #include <time.h> | |
20 | #include <unistd.h> | |
997b2e4f | 21 | #include <sys/mman.h> |
ca69c3e5 | 22 | #include <errno.h> |
c52e6628 | 23 | #include <sys/stat.h> |
4ab30ad4 | 24 | |
a86e9a3e | 25 | #include "../plat.h" |
049a6b3e | 26 | |
ca69c3e5 | 27 | /* XXX: maybe unhardcode pagesize? */ |
28 | #define HUGETLB_PAGESIZE (2 * 1024 * 1024) | |
29 | #define HUGETLB_THRESHOLD (HUGETLB_PAGESIZE / 2) | |
30 | #ifndef MAP_HUGETLB | |
31 | #define MAP_HUGETLB 0x40000 /* arch specific */ | |
32 | #endif | |
33 | ||
049a6b3e | 34 | |
35 | int plat_is_dir(const char *path) | |
36 | { | |
37 | DIR *dir; | |
38 | if ((dir = opendir(path))) { | |
39 | closedir(dir); | |
40 | return 1; | |
41 | } | |
42 | return 0; | |
43 | } | |
44 | ||
a23a278d | 45 | int plat_get_data_dir(char *dst, int len) |
46 | { | |
47 | if (len > 1) | |
48 | strcpy(dst, "/"); | |
49 | else *dst = 0; | |
50 | return strlen(dst); | |
51 | } | |
52 | ||
53 | static int plat_get_exe_dir(char *dst, int len) | |
d2f29611 | 54 | { |
c52e6628 PC |
55 | #ifdef PICO_DATA_DIR |
56 | memcpy(dst, PICO_DATA_DIR, sizeof PICO_DATA_DIR); | |
57 | return sizeof(PICO_DATA_DIR) - 1; | |
58 | #else | |
740c6f25 MG |
59 | int j, ret = readlink( |
60 | #ifdef __FreeBSD__ | |
61 | "/proc/curproc/file", | |
62 | #else | |
63 | "/proc/self/exe", | |
64 | #endif | |
65 | dst, len - 1); | |
2b9f9c51 | 66 | if (ret < 0) { |
67 | perror("readlink"); | |
68 | ret = 0; | |
69 | } | |
70 | dst[ret] = 0; | |
d2f29611 | 71 | |
c52e6628 | 72 | for (j = ret - 1; j > 0; j--) |
2b9f9c51 | 73 | if (dst[j] == '/') { |
74 | dst[++j] = 0; | |
75 | break; | |
76 | } | |
f35e50ef | 77 | return j; |
c52e6628 PC |
78 | #endif |
79 | } | |
80 | ||
81 | int plat_get_skin_dir(char *dst, int len) | |
82 | { | |
a23a278d | 83 | int ret = plat_get_exe_dir(dst, len); |
c52e6628 | 84 | if (ret < 0) |
7a431548 | 85 | ret = 0; |
c52e6628 PC |
86 | |
87 | memcpy(dst + ret, "skin/", sizeof "skin/"); | |
88 | return ret + sizeof("skin/") - 1; | |
89 | } | |
90 | ||
91 | #ifndef PICO_HOME_DIR | |
92 | #define PICO_HOME_DIR "/.picodrive/" | |
93 | #endif | |
94 | int plat_get_root_dir(char *dst, int len) | |
95 | { | |
e50d6e06 | 96 | #if !defined(NO_HOME_DIR) && !defined(__GP2X__) && !defined(PANDORA) |
af7e5006 | 97 | const char *home = getenv("HOME"); |
98 | int ret; | |
c52e6628 | 99 | |
af7e5006 | 100 | if (home != NULL) { |
101 | ret = snprintf(dst, len, "%s%s", home, PICO_HOME_DIR); | |
102 | if (ret >= len) | |
103 | ret = len - 1; | |
104 | mkdir(dst, 0755); | |
105 | return ret; | |
106 | } | |
c52e6628 | 107 | #endif |
a23a278d | 108 | return plat_get_exe_dir(dst, len); |
d2f29611 | 109 | } |
110 | ||
b5bfb864 | 111 | #ifdef __GP2X__ |
112 | /* Wiz has a borked gettimeofday().. */ | |
1eb704b6 | 113 | #define plat_get_ticks_ms plat_get_ticks_ms_good |
114 | #define plat_get_ticks_us plat_get_ticks_us_good | |
b5bfb864 | 115 | #endif |
116 | ||
4ab30ad4 | 117 | unsigned int plat_get_ticks_ms(void) |
118 | { | |
119 | struct timeval tv; | |
120 | unsigned int ret; | |
121 | ||
122 | gettimeofday(&tv, NULL); | |
123 | ||
124 | ret = (unsigned)tv.tv_sec * 1000; | |
b5bfb864 | 125 | /* approximate /= 1000 */ |
4ab30ad4 | 126 | ret += ((unsigned)tv.tv_usec * 4195) >> 22; |
127 | ||
128 | return ret; | |
129 | } | |
130 | ||
b5bfb864 | 131 | unsigned int plat_get_ticks_us(void) |
132 | { | |
133 | struct timeval tv; | |
134 | unsigned int ret; | |
135 | ||
136 | gettimeofday(&tv, NULL); | |
137 | ||
138 | ret = (unsigned)tv.tv_sec * 1000000; | |
139 | ret += (unsigned)tv.tv_usec; | |
140 | ||
141 | return ret; | |
142 | } | |
143 | ||
4ab30ad4 | 144 | void plat_sleep_ms(int ms) |
145 | { | |
146 | usleep(ms * 1000); | |
147 | } | |
148 | ||
149 | int plat_wait_event(int *fds_hnds, int count, int timeout_ms) | |
150 | { | |
151 | struct timeval tv, *timeout = NULL; | |
152 | int i, ret, fdmax = -1; | |
153 | fd_set fdset; | |
154 | ||
155 | if (timeout_ms >= 0) { | |
156 | tv.tv_sec = timeout_ms / 1000; | |
157 | tv.tv_usec = (timeout_ms % 1000) * 1000; | |
158 | timeout = &tv; | |
159 | } | |
160 | ||
161 | FD_ZERO(&fdset); | |
162 | for (i = 0; i < count; i++) { | |
163 | if (fds_hnds[i] > fdmax) fdmax = fds_hnds[i]; | |
164 | FD_SET(fds_hnds[i], &fdset); | |
165 | } | |
166 | ||
167 | ret = select(fdmax + 1, &fdset, NULL, NULL, timeout); | |
168 | if (ret == -1) | |
169 | { | |
170 | perror("plat_wait_event: select failed"); | |
171 | sleep(1); | |
172 | return -1; | |
173 | } | |
174 | ||
175 | if (ret == 0) | |
176 | return -1; /* timeout */ | |
177 | ||
178 | ret = -1; | |
179 | for (i = 0; i < count; i++) | |
180 | if (FD_ISSET(fds_hnds[i], &fdset)) | |
181 | ret = fds_hnds[i]; | |
182 | ||
183 | return ret; | |
184 | } | |
185 | ||
ca69c3e5 | 186 | void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed) |
997b2e4f | 187 | { |
f4750ef3 | 188 | static int hugetlb_warned; |
ca69c3e5 | 189 | int prot = PROT_READ | PROT_WRITE; |
190 | int flags = MAP_PRIVATE | MAP_ANONYMOUS; | |
997b2e4f | 191 | void *req, *ret; |
1ed48049 | 192 | |
997b2e4f | 193 | req = (void *)addr; |
ca69c3e5 | 194 | if (need_exec) |
195 | prot |= PROT_EXEC; | |
26ea1817 | 196 | /* avoid MAP_FIXED, it overrides existing mappings.. |
ca69c3e5 | 197 | if (is_fixed) |
198 | flags |= MAP_FIXED; | |
26ea1817 | 199 | */ |
f4750ef3 | 200 | if (size >= HUGETLB_THRESHOLD) |
ca69c3e5 | 201 | flags |= MAP_HUGETLB; |
5d636caa | 202 | #ifdef MAP_JIT |
203 | if (need_exec) | |
204 | flags |= MAP_JIT; | |
205 | #endif | |
ca69c3e5 | 206 | |
207 | ret = mmap(req, size, prot, flags, -1, 0); | |
208 | if (ret == MAP_FAILED && (flags & MAP_HUGETLB)) { | |
f4750ef3 | 209 | if (!hugetlb_warned) { |
210 | fprintf(stderr, | |
211 | "warning: failed to do hugetlb mmap (%p, %zu): %d\n", | |
212 | req, size, errno); | |
213 | hugetlb_warned = 1; | |
214 | } | |
ca69c3e5 | 215 | flags &= ~MAP_HUGETLB; |
216 | ret = mmap(req, size, prot, flags, -1, 0); | |
b0ce6fa8 | 217 | #ifdef MADV_HUGEPAGE |
218 | if (ret != MAP_FAILED && ((uintptr_t)ret & (2*1024*1024 - 1))) { | |
219 | // try to manually realign assuming bottom-to-top alloc | |
220 | munmap(ret, size); | |
221 | ret = (void *)((uintptr_t)ret & ~(2*1024*1024 - 1)); | |
222 | ret = mmap(ret, size, prot, flags, -1, 0); | |
223 | } | |
224 | if (ret != MAP_FAILED) | |
225 | madvise(ret, size, MADV_HUGEPAGE); | |
226 | #endif | |
ca69c3e5 | 227 | } |
997b2e4f | 228 | if (ret == MAP_FAILED) |
229 | return NULL; | |
ca69c3e5 | 230 | |
26ea1817 | 231 | if (req != NULL && ret != req) { |
232 | fprintf(stderr, "%s: mmaped to %p, requested %p\n", | |
233 | is_fixed ? "error" : "warning", ret, req); | |
234 | if (is_fixed) { | |
235 | munmap(ret, size); | |
236 | return NULL; | |
237 | } | |
238 | } | |
997b2e4f | 239 | |
240 | return ret; | |
241 | } | |
242 | ||
1ed48049 | 243 | void *plat_mremap(void *ptr, size_t oldsize, size_t newsize) |
244 | { | |
245 | void *ret; | |
246 | ||
5d636caa | 247 | #ifdef MREMAP_MAYMOVE |
1ed48049 | 248 | ret = mremap(ptr, oldsize, newsize, MREMAP_MAYMOVE); |
5d636caa | 249 | if (ret == MAP_FAILED) |
250 | #endif | |
251 | { | |
448ec62f | 252 | fprintf(stderr, "mremap %p %zd %zd: ", |
253 | ptr, oldsize, newsize); | |
254 | perror(NULL); | |
255 | // might be because huge pages can't be remapped, | |
256 | // just make a new mapping | |
257 | ret = plat_mmap(0, newsize, 0, 0); | |
258 | if (ret == MAP_FAILED) | |
259 | return NULL; | |
260 | memcpy(ret, ptr, oldsize); | |
261 | munmap(ptr, oldsize); | |
262 | } | |
1ed48049 | 263 | if (ret != ptr) |
264 | printf("warning: mremap moved: %p -> %p\n", ptr, ret); | |
265 | ||
266 | return ret; | |
267 | } | |
268 | ||
997b2e4f | 269 | void plat_munmap(void *ptr, size_t size) |
270 | { | |
ca69c3e5 | 271 | int ret; |
272 | ||
273 | ret = munmap(ptr, size); | |
274 | if (ret != 0 && (size & (HUGETLB_PAGESIZE - 1))) { | |
275 | // prehaps an autorounded hugetlb mapping? | |
276 | size = (size + HUGETLB_PAGESIZE - 1) & ~(HUGETLB_PAGESIZE - 1); | |
277 | ret = munmap(ptr, size); | |
278 | } | |
279 | if (ret != 0) { | |
280 | fprintf(stderr, | |
281 | "munmap(%p, %zu) failed: %d\n", ptr, size, errno); | |
282 | } | |
997b2e4f | 283 | } |
284 | ||
6282e17e GI |
285 | int plat_mem_set_exec(void *ptr, size_t size) |
286 | { | |
287 | int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC); | |
288 | if (ret != 0) | |
289 | fprintf(stderr, "mprotect(%p, %zd) failed: %d\n", | |
290 | ptr, size, errno); | |
291 | ||
292 | return ret; | |
293 | } | |
294 | ||
2b9f9c51 | 295 | /* lprintf */ |
296 | void lprintf(const char *fmt, ...) | |
297 | { | |
298 | va_list vl; | |
299 | ||
300 | va_start(vl, fmt); | |
301 | vprintf(fmt, vl); | |
302 | va_end(vl); | |
303 | } | |
304 |