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Set user address space limit to 0xc0000000.

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This commit is contained in:
Alexandre Julliard 2002-08-03 19:13:55 +00:00
parent 00b088bc25
commit 636cfc5389
1 changed files with 9 additions and 4 deletions
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13
memory/virtual.c
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@ -110,6 +110,8 @@ static UINT page_size;
#endif /* __i386__ */
#define granularity_mask 0xffff /* Allocation granularity (usually 64k) */
#define ADDRESS_SPACE_LIMIT ((void *)0xc0000000) /* top of the user address space */
#define ROUND_ADDR(addr,mask) \
((void *)((UINT_PTR)(addr) & ~(mask)))
@ -998,9 +1000,12 @@ LPVOID WINAPI VirtualAlloc(
else
base = ROUND_ADDR( addr, page_mask );
size = (((UINT_PTR)addr + size + page_mask) & ~page_mask) - (UINT_PTR)base;
if ((base <= (char *)granularity_mask) || (base + size < base))
/* disallow low 64k, wrap-around and kernel space */
if ((base <= (char *)granularity_mask) ||
(base + size < base) ||
(base + size > (char *)ADDRESS_SPACE_LIMIT))
{
/* disallow low 64k and wrap-around */
SetLastError( ERROR_INVALID_PARAMETER );
return NULL;
}
@ -1287,7 +1292,7 @@ DWORD WINAPI VirtualQuery(
char *base, *alloc_base = 0;
UINT size = 0;
if (addr >= (void*)0xc0000000) return 0;
if (addr >= ADDRESS_SPACE_LIMIT) return 0;
base = ROUND_ADDR( addr, page_mask );
@ -1299,7 +1304,7 @@ DWORD WINAPI VirtualQuery(
{
if (!view)
{
size = (char *)0xffff0000 - alloc_base;
size = (char *)ADDRESS_SPACE_LIMIT - alloc_base;
break;
}
if ((char *)view->base > base)