pull in more code from PicoDrive

[pcsx_rearmed.git] / frontend / linux / plat.c

diff --git a/frontend/linux/plat.c b/frontend/linux/plat.c
new file mode 100644 (file)
index 0000000..1e107f4
--- /dev/null
+++ b/frontend/linux/plat.c
@@ -0,0 +1,170 @@
+/*
+ * (C) Gražvydas "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);
+}
+