bugfixes related to mmap usage for ROM

git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@867 be3aeb3a-fb24-0410-a615-afba39da0efa

diff --git a/linux/plat.c b/linux/plat.c
index 492007c..f5742b9 100644 (file)
--- a/linux/plat.c
+++ b/linux/plat.c
@@ -1,3 +1,4 @@
+#define _GNU_SOURCE
 #include <stdio.h>
 #include <string.h>
 #include <dirent.h>
@@ -112,8 +113,9 @@ int plat_wait_event(int *fds_hnds, int count, int timeout_ms)
 void *plat_mmap(unsigned long addr, size_t size)
 {
        void *req, *ret;
+
        req = (void *)addr;
-       ret = mmap(req, size, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS, -1, 0);
+       ret = mmap(req, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
        if (ret == MAP_FAILED)
                return NULL;
        if (ret != req)
@@ -122,6 +124,19 @@ void *plat_mmap(unsigned long addr, size_t size)
        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);