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sandbox: Try to start the RAM buffer at a particular address

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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>
This commit is contained in:
Simon Glass 2018-06-17 08:57:43 -06:00
parent 205dd5afe5
commit bd8b74551b
1 changed files with 6 additions and 1 deletions
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7
arch/sandbox/cpu/os.c
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@ -174,7 +174,12 @@ void *os_malloc(size_t length)
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)