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Fix mremap, based on patch by Kirill A. Shutemov 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6056 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1 2008-12-15 17:58:49 +00:00
parent d445bde7e8
commit 3af72a4d98
1 changed files with 11 additions and 8 deletions
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19
linux-user/mmap.c
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@ -24,6 +24,8 @@
#include <unistd.h>
#include <errno.h>
#include <sys/mman.h>
#include <linux/mman.h>
#include <linux/unistd.h>
#include "qemu.h"
#include "qemu-common.h"
@ -546,10 +548,11 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
mmap_lock();
#if defined(MREMAP_FIXED)
if (flags & MREMAP_FIXED)
host_addr = mremap(g2h(old_addr), old_size, new_size,
flags, new_addr);
host_addr = (void *) syscall(__NR_mremap, g2h(old_addr),
old_size, new_size,
flags,
new_addr);
else if (flags & MREMAP_MAYMOVE) {
abi_ulong mmap_start;
@ -559,11 +562,11 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
errno = ENOMEM;
host_addr = MAP_FAILED;
} else
host_addr = mremap(g2h(old_addr), old_size, new_size,
flags | MREMAP_FIXED, g2h(mmap_start));
} else
#endif
{
host_addr = (void *) syscall(__NR_mremap, g2h(old_addr),
old_size, new_size,
flags | MREMAP_FIXED,
g2h(mmap_start));
} else {
host_addr = mremap(g2h(old_addr), old_size, new_size, flags);
/* Check if address fits target address space */
if ((unsigned long)host_addr + new_size > (abi_ulong)-1) {