sandbox: Try to start the RAM buffer at a particular address
Use a starting address of 256MB which should be available. This helps to
make sandbox RAM buffers pointers more recognisable.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c
index 07e4647..325ded5 100644
--- a/arch/sandbox/cpu/os.c
+++ b/arch/sandbox/cpu/os.c
@@ -174,7 +174,12 @@
struct os_mem_hdr *hdr;
int page_size = getpagesize();
- hdr = mmap(NULL, length + page_size,
+ /*
+ * Use an address that is hopefully available to us so that pointers
+ * to this memory are fairly obvious. If we end up with a different
+ * address, that's fine too.
+ */
+ hdr = mmap((void *)0x10000000, length + page_size,
PROT_READ | PROT_WRITE | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (hdr == MAP_FAILED)