[Qemu-devel] [6412] linux-user: add qemu_realloc() implementation to unbreak the build ( Gerd Hoffman)

[Anthony Liguori]

Revision: 6412
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6412
Author:   aliguori
Date:     2009-01-23 15:02:20 +0000 (Fri, 23 Jan 2009)

Log Message:
-----------
linux-user: add qemu_realloc() implementation to unbreak the build (Gerd 
Hoffman)

Signed-off-by: Gerd Hoffmann <address@hidden>
Signed-off-by: Anthony Liguori <address@hidden>

Modified Paths:
--------------
    trunk/linux-user/mmap.c

Modified: trunk/linux-user/mmap.c
===================================================================
--- trunk/linux-user/mmap.c     2009-01-22 22:09:55 UTC (rev 6411)
+++ trunk/linux-user/mmap.c     2009-01-23 15:02:20 UTC (rev 6412)
@@ -123,6 +123,19 @@
     munmap(p, *p);
 }
 
+void *qemu_realloc(void *ptr, size_t size)
+{
+    size_t old_size, copy;
+    void *new_ptr;
+
+    old_size = *(size_t *)((char *)ptr - 16);
+    copy = old_size < size ? old_size : size;
+    new_ptr = qemu_malloc(size);
+    memcpy(new_ptr, ptr, copy);
+    qemu_free(ptr);
+    return new_ptr;
+}
+
 /* NOTE: all the constants are the HOST ones, but addresses are target. */
 int target_mprotect(abi_ulong start, abi_ulong len, int prot)
 {