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> |
049a6b3e | 16 | #include <dirent.h> |
4ab30ad4 | 17 | #include <sys/time.h> |
18 | #include <time.h> | |
19 | #include <unistd.h> | |
997b2e4f | 20 | #include <sys/mman.h> |
ca69c3e5 | 21 | #include <errno.h> |
4ab30ad4 | 22 | |
a86e9a3e | 23 | #include "../plat.h" |
049a6b3e | 24 | |
ca69c3e5 | 25 | /* XXX: maybe unhardcode pagesize? */ |
26 | #define HUGETLB_PAGESIZE (2 * 1024 * 1024) | |
27 | #define HUGETLB_THRESHOLD (HUGETLB_PAGESIZE / 2) | |
28 | #ifndef MAP_HUGETLB | |
29 | #define MAP_HUGETLB 0x40000 /* arch specific */ | |
30 | #endif | |
31 | ||
049a6b3e | 32 | |
33 | int plat_is_dir(const char *path) | |
34 | { | |
35 | DIR *dir; | |
36 | if ((dir = opendir(path))) { | |
37 | closedir(dir); | |
38 | return 1; | |
39 | } | |
40 | return 0; | |
41 | } | |
42 | ||
d2f29611 | 43 | int plat_get_root_dir(char *dst, int len) |
44 | { | |
2b9f9c51 | 45 | int j, ret; |
46 | ||
47 | ret = readlink("/proc/self/exe", dst, len - 1); | |
48 | if (ret < 0) { | |
49 | perror("readlink"); | |
50 | ret = 0; | |
51 | } | |
52 | dst[ret] = 0; | |
d2f29611 | 53 | |
d2f29611 | 54 | for (j = strlen(dst); j > 0; j--) |
2b9f9c51 | 55 | if (dst[j] == '/') { |
56 | dst[++j] = 0; | |
57 | break; | |
58 | } | |
d2f29611 | 59 | |
f35e50ef | 60 | return j; |
d2f29611 | 61 | } |
62 | ||
b5bfb864 | 63 | #ifdef __GP2X__ |
64 | /* Wiz has a borked gettimeofday().. */ | |
1eb704b6 | 65 | #define plat_get_ticks_ms plat_get_ticks_ms_good |
66 | #define plat_get_ticks_us plat_get_ticks_us_good | |
b5bfb864 | 67 | #endif |
68 | ||
4ab30ad4 | 69 | unsigned int plat_get_ticks_ms(void) |
70 | { | |
71 | struct timeval tv; | |
72 | unsigned int ret; | |
73 | ||
74 | gettimeofday(&tv, NULL); | |
75 | ||
76 | ret = (unsigned)tv.tv_sec * 1000; | |
b5bfb864 | 77 | /* approximate /= 1000 */ |
4ab30ad4 | 78 | ret += ((unsigned)tv.tv_usec * 4195) >> 22; |
79 | ||
80 | return ret; | |
81 | } | |
82 | ||
b5bfb864 | 83 | unsigned int plat_get_ticks_us(void) |
84 | { | |
85 | struct timeval tv; | |
86 | unsigned int ret; | |
87 | ||
88 | gettimeofday(&tv, NULL); | |
89 | ||
90 | ret = (unsigned)tv.tv_sec * 1000000; | |
91 | ret += (unsigned)tv.tv_usec; | |
92 | ||
93 | return ret; | |
94 | } | |
95 | ||
4ab30ad4 | 96 | void plat_sleep_ms(int ms) |
97 | { | |
98 | usleep(ms * 1000); | |
99 | } | |
100 | ||
101 | int plat_wait_event(int *fds_hnds, int count, int timeout_ms) | |
102 | { | |
103 | struct timeval tv, *timeout = NULL; | |
104 | int i, ret, fdmax = -1; | |
105 | fd_set fdset; | |
106 | ||
107 | if (timeout_ms >= 0) { | |
108 | tv.tv_sec = timeout_ms / 1000; | |
109 | tv.tv_usec = (timeout_ms % 1000) * 1000; | |
110 | timeout = &tv; | |
111 | } | |
112 | ||
113 | FD_ZERO(&fdset); | |
114 | for (i = 0; i < count; i++) { | |
115 | if (fds_hnds[i] > fdmax) fdmax = fds_hnds[i]; | |
116 | FD_SET(fds_hnds[i], &fdset); | |
117 | } | |
118 | ||
119 | ret = select(fdmax + 1, &fdset, NULL, NULL, timeout); | |
120 | if (ret == -1) | |
121 | { | |
122 | perror("plat_wait_event: select failed"); | |
123 | sleep(1); | |
124 | return -1; | |
125 | } | |
126 | ||
127 | if (ret == 0) | |
128 | return -1; /* timeout */ | |
129 | ||
130 | ret = -1; | |
131 | for (i = 0; i < count; i++) | |
132 | if (FD_ISSET(fds_hnds[i], &fdset)) | |
133 | ret = fds_hnds[i]; | |
134 | ||
135 | return ret; | |
136 | } | |
137 | ||
ca69c3e5 | 138 | void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed) |
997b2e4f | 139 | { |
f4750ef3 | 140 | static int hugetlb_warned; |
ca69c3e5 | 141 | int prot = PROT_READ | PROT_WRITE; |
142 | int flags = MAP_PRIVATE | MAP_ANONYMOUS; | |
997b2e4f | 143 | void *req, *ret; |
1ed48049 | 144 | |
997b2e4f | 145 | req = (void *)addr; |
ca69c3e5 | 146 | if (need_exec) |
147 | prot |= PROT_EXEC; | |
148 | if (is_fixed) | |
149 | flags |= MAP_FIXED; | |
f4750ef3 | 150 | if (size >= HUGETLB_THRESHOLD) |
ca69c3e5 | 151 | flags |= MAP_HUGETLB; |
152 | ||
153 | ret = mmap(req, size, prot, flags, -1, 0); | |
154 | if (ret == MAP_FAILED && (flags & MAP_HUGETLB)) { | |
f4750ef3 | 155 | if (!hugetlb_warned) { |
156 | fprintf(stderr, | |
157 | "warning: failed to do hugetlb mmap (%p, %zu): %d\n", | |
158 | req, size, errno); | |
159 | hugetlb_warned = 1; | |
160 | } | |
ca69c3e5 | 161 | flags &= ~MAP_HUGETLB; |
162 | ret = mmap(req, size, prot, flags, -1, 0); | |
163 | } | |
997b2e4f | 164 | if (ret == MAP_FAILED) |
165 | return NULL; | |
ca69c3e5 | 166 | |
167 | if (req != NULL && ret != req) | |
168 | fprintf(stderr, | |
169 | "warning: mmaped to %p, requested %p\n", ret, req); | |
997b2e4f | 170 | |
171 | return ret; | |
172 | } | |
173 | ||
1ed48049 | 174 | void *plat_mremap(void *ptr, size_t oldsize, size_t newsize) |
175 | { | |
176 | void *ret; | |
177 | ||
178 | ret = mremap(ptr, oldsize, newsize, MREMAP_MAYMOVE); | |
179 | if (ret == MAP_FAILED) | |
180 | return NULL; | |
181 | if (ret != ptr) | |
182 | printf("warning: mremap moved: %p -> %p\n", ptr, ret); | |
183 | ||
184 | return ret; | |
185 | } | |
186 | ||
997b2e4f | 187 | void plat_munmap(void *ptr, size_t size) |
188 | { | |
ca69c3e5 | 189 | int ret; |
190 | ||
191 | ret = munmap(ptr, size); | |
192 | if (ret != 0 && (size & (HUGETLB_PAGESIZE - 1))) { | |
193 | // prehaps an autorounded hugetlb mapping? | |
194 | size = (size + HUGETLB_PAGESIZE - 1) & ~(HUGETLB_PAGESIZE - 1); | |
195 | ret = munmap(ptr, size); | |
196 | } | |
197 | if (ret != 0) { | |
198 | fprintf(stderr, | |
199 | "munmap(%p, %zu) failed: %d\n", ptr, size, errno); | |
200 | } | |
997b2e4f | 201 | } |
202 | ||
6282e17e GI |
203 | int plat_mem_set_exec(void *ptr, size_t size) |
204 | { | |
205 | int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC); | |
206 | if (ret != 0) | |
207 | fprintf(stderr, "mprotect(%p, %zd) failed: %d\n", | |
208 | ptr, size, errno); | |
209 | ||
210 | return ret; | |
211 | } | |
212 | ||
2b9f9c51 | 213 | /* lprintf */ |
214 | void lprintf(const char *fmt, ...) | |
215 | { | |
216 | va_list vl; | |
217 | ||
218 | va_start(vl, fmt); | |
219 | vprintf(fmt, vl); | |
220 | va_end(vl); | |
221 | } | |
222 |