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Diffstat (limited to 'frontend/linux/plat.c')
| -rw-r--r-- | frontend/linux/plat.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/frontend/linux/plat.c b/frontend/linux/plat.c new file mode 100644 index 0000000..1e107f4 --- /dev/null +++ b/frontend/linux/plat.c @@ -0,0 +1,170 @@ +/* + * (C) GraÅžvydas "notaz" Ignotas, 2008-2010 + * + * This work is licensed under the terms of any of these licenses + * (at your option): + * - GNU GPL, version 2 or later. + * - GNU LGPL, version 2.1 or later. + * See the COPYING file in the top-level directory. + */ + +#define _GNU_SOURCE +#include <stdio.h> +#include <string.h> +#include <stdarg.h> +#include <dirent.h> +#include <sys/time.h> +#include <time.h> +#include <unistd.h> +#include <sys/mman.h> + +#include "../common/plat.h" + + +int plat_is_dir(const char *path) +{ + DIR *dir; + if ((dir = opendir(path))) { + closedir(dir); + return 1; + } + return 0; +} + +int plat_get_root_dir(char *dst, int len) +{ + int j, ret; + + ret = readlink("/proc/self/exe", dst, len - 1); + if (ret < 0) { + perror("readlink"); + ret = 0; + } + dst[ret] = 0; + + for (j = strlen(dst); j > 0; j--) + if (dst[j] == '/') { + dst[++j] = 0; + break; + } + + return 0; +} + +#ifdef __GP2X__ +/* Wiz has a borked gettimeofday().. */ +#define plat_get_ticks_ms plat_get_ticks_ms_good +#define plat_get_ticks_us plat_get_ticks_us_good +#endif + +unsigned int plat_get_ticks_ms(void) +{ + struct timeval tv; + unsigned int ret; + + gettimeofday(&tv, NULL); + + ret = (unsigned)tv.tv_sec * 1000; + /* approximate /= 1000 */ + ret += ((unsigned)tv.tv_usec * 4195) >> 22; + + return ret; +} + +unsigned int plat_get_ticks_us(void) +{ + struct timeval tv; + unsigned int ret; + + gettimeofday(&tv, NULL); + + ret = (unsigned)tv.tv_sec * 1000000; + ret += (unsigned)tv.tv_usec; + + return ret; +} + +void plat_sleep_ms(int ms) +{ + usleep(ms * 1000); +} + +int plat_wait_event(int *fds_hnds, int count, int timeout_ms) +{ + struct timeval tv, *timeout = NULL; + int i, ret, fdmax = -1; + fd_set fdset; + + if (timeout_ms >= 0) { + tv.tv_sec = timeout_ms / 1000; + tv.tv_usec = (timeout_ms % 1000) * 1000; + timeout = &tv; + } + + FD_ZERO(&fdset); + for (i = 0; i < count; i++) { + if (fds_hnds[i] > fdmax) fdmax = fds_hnds[i]; + FD_SET(fds_hnds[i], &fdset); + } + + ret = select(fdmax + 1, &fdset, NULL, NULL, timeout); + if (ret == -1) + { + perror("plat_wait_event: select failed"); + sleep(1); + return -1; + } + + if (ret == 0) + return -1; /* timeout */ + + ret = -1; + for (i = 0; i < count; i++) + if (FD_ISSET(fds_hnds[i], &fdset)) + ret = fds_hnds[i]; + + return ret; +} + +void *plat_mmap(unsigned long addr, size_t size) +{ + void *req, *ret; + + req = (void *)addr; + ret = mmap(req, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); + if (ret == MAP_FAILED) + return NULL; + if (ret != req) + printf("warning: mmaped to %p, requested %p\n", ret, req); + + return ret; +} + +void *plat_mremap(void *ptr, size_t oldsize, size_t newsize) +{ + void *ret; + + ret = mremap(ptr, oldsize, newsize, MREMAP_MAYMOVE); + if (ret == MAP_FAILED) + return NULL; + if (ret != ptr) + printf("warning: mremap moved: %p -> %p\n", ptr, ret); + + return ret; +} + +void plat_munmap(void *ptr, size_t size) +{ + munmap(ptr, size); +} + +/* lprintf */ +void lprintf(const char *fmt, ...) +{ + va_list vl; + + va_start(vl, fmt); + vprintf(fmt, vl); + va_end(vl); +} + |