/*
- * (C) Gražvydas "notaz" Ignotas, 2008-2010
+ * (C) Gražvydas "notaz" Ignotas, 2008-2012
*
* 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.
+ * - MAME license.
* See the COPYING file in the top-level directory.
*/
#include <time.h>
#include <unistd.h>
#include <sys/mman.h>
+#include <errno.h>
+#include <sys/stat.h>
-#include "../common/plat.h"
+#include "../plat.h"
+
+/* XXX: maybe unhardcode pagesize? */
+#define HUGETLB_PAGESIZE (2 * 1024 * 1024)
+#define HUGETLB_THRESHOLD (HUGETLB_PAGESIZE / 2)
+#ifndef MAP_HUGETLB
+#define MAP_HUGETLB 0x40000 /* arch specific */
+#endif
int plat_is_dir(const char *path)
return 0;
}
-int plat_get_root_dir(char *dst, int len)
+static int plat_get_data_dir(char *dst, int len)
{
- int j, ret;
-
- ret = readlink("/proc/self/exe", dst, len - 1);
+#ifdef PICO_DATA_DIR
+ memcpy(dst, PICO_DATA_DIR, sizeof PICO_DATA_DIR);
+ return sizeof(PICO_DATA_DIR) - 1;
+#else
+ int j, 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--)
+ for (j = ret - 1; j > 0; j--)
if (dst[j] == '/') {
dst[++j] = 0;
break;
}
-
return j;
+#endif
+}
+
+int plat_get_skin_dir(char *dst, int len)
+{
+ int ret = plat_get_data_dir(dst, len);
+ if (ret < 0)
+ return ret;
+
+ memcpy(dst + ret, "skin/", sizeof "skin/");
+ return ret + sizeof("skin/") - 1;
+}
+
+#ifndef PICO_HOME_DIR
+#define PICO_HOME_DIR "/.picodrive/"
+#endif
+int plat_get_root_dir(char *dst, int len)
+{
+#if defined(__GP2X__) || defined(PANDORA)
+ return plat_get_data_dir(dst, len);
+#else
+ char *home = getenv("HOME");
+ size_t nb = strlen(home);
+
+ memcpy(dst, home, nb);
+ memcpy(dst + nb, PICO_HOME_DIR, sizeof PICO_HOME_DIR);
+ mkdir(dst, 0755);
+ return nb + sizeof(PICO_HOME_DIR) - 1;
+#endif
}
#ifdef __GP2X__
return ret;
}
-void *plat_mmap(unsigned long addr, size_t size)
+void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
{
+ static int hugetlb_warned;
+ int prot = PROT_READ | PROT_WRITE;
+ int flags = MAP_PRIVATE | MAP_ANONYMOUS;
void *req, *ret;
req = (void *)addr;
- ret = mmap(req, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+ if (need_exec)
+ prot |= PROT_EXEC;
+ if (is_fixed)
+ flags |= MAP_FIXED;
+ if (size >= HUGETLB_THRESHOLD)
+ flags |= MAP_HUGETLB;
+
+ ret = mmap(req, size, prot, flags, -1, 0);
+ if (ret == MAP_FAILED && (flags & MAP_HUGETLB)) {
+ if (!hugetlb_warned) {
+ fprintf(stderr,
+ "warning: failed to do hugetlb mmap (%p, %zu): %d\n",
+ req, size, errno);
+ hugetlb_warned = 1;
+ }
+ flags &= ~MAP_HUGETLB;
+ ret = mmap(req, size, prot, flags, -1, 0);
+ }
if (ret == MAP_FAILED)
return NULL;
- if (ret != req)
- printf("warning: mmaped to %p, requested %p\n", ret, req);
+
+ if (req != NULL && ret != req)
+ fprintf(stderr,
+ "warning: mmaped to %p, requested %p\n", ret, req);
return ret;
}
void plat_munmap(void *ptr, size_t size)
{
- munmap(ptr, size);
+ int ret;
+
+ ret = munmap(ptr, size);
+ if (ret != 0 && (size & (HUGETLB_PAGESIZE - 1))) {
+ // prehaps an autorounded hugetlb mapping?
+ size = (size + HUGETLB_PAGESIZE - 1) & ~(HUGETLB_PAGESIZE - 1);
+ ret = munmap(ptr, size);
+ }
+ if (ret != 0) {
+ fprintf(stderr,
+ "munmap(%p, %zu) failed: %d\n", ptr, size, errno);
+ }
+}
+
+int plat_mem_set_exec(void *ptr, size_t size)
+{
+ int ret = mprotect(ptr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
+ if (ret != 0)
+ fprintf(stderr, "mprotect(%p, %zd) failed: %d\n",
+ ptr, size, errno);
+
+ return ret;
}
/* lprintf */