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preloader: Reserve low memory areas in separate chunks.

This commit is contained in:
Alexandre Julliard 2008-04-14 20:38:17 +02:00
parent 876257a6dc
commit 195ca1e85f
1 changed files with 19 additions and 10 deletions
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29
loader/preloader.c
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@ -108,7 +108,9 @@
static struct wine_preload_info preload_info[] =
{
{ (void *)0x00000000, 0x60000000 }, /* low memory area */
{ (void *)0x00000000, 0x00010000 }, /* low 64k */
{ (void *)0x00010000, 0x00100000 }, /* DOS area */
{ (void *)0x00110000, 0x5fef0000 }, /* low memory area */
{ (void *)0x7f000000, 0x02000000 }, /* top-down allocations + shared heap */
{ 0, 0 }, /* PE exe range set with WINEPRELOADRESERVE */
{ 0, 0 } /* end of list */
@ -919,7 +921,7 @@ static void preload_reserve( const char *str )
const char *p;
unsigned long result = 0;
void *start = NULL, *end = NULL;
int first = 1;
int i, first = 1;
for (p = str; *p; p++)
{
@ -948,15 +950,22 @@ static void preload_reserve( const char *str )
start = end = NULL;
}
/* check for overlap with low memory area */
if ((char *)end <= (char *)preload_info[0].addr + preload_info[0].size)
start = end = NULL;
else if ((char *)start < (char *)preload_info[0].addr + preload_info[0].size)
start = (char *)preload_info[0].addr + preload_info[0].size;
/* check for overlap with low memory areas */
for (i = 0; preload_info[i].size; i++)
{
if ((char *)preload_info[i].addr > (char *)0x00110000) break;
if ((char *)end <= (char *)preload_info[i].addr + preload_info[i].size)
{
start = end = NULL;
break;
}
if ((char *)start < (char *)preload_info[i].addr + preload_info[i].size)
start = (char *)preload_info[i].addr + preload_info[i].size;
}
/* entry 2 is for the PE exe */
preload_info[2].addr = start;
preload_info[2].size = (char *)end - (char *)start;
while (preload_info[i].size) i++;
preload_info[i].addr = start;
preload_info[i].size = (char *)end - (char *)start;
return;
error: