Use alloc_area.limit field to limit the search in reserved areas to the
desired memory range, or call find_free_area to get a pointer to a free
memory region which matches the zero_bits constraint, then mmap it with
MAP_FIXED flag.
Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Only the leading zeroes are taken into account, so 0x1aaaaaaa zero_bits
behaves as 0x1fffffff
Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
The todo_wine_if made the tests not really test anything, and one test
was succeeding when it shouldn't. Now we can actually remove the todo
when 1 zero_bits handling is implemented.
Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
It can be a pointer mask, eventually 64bit, and ULONG_PTR is what can be
found in several documentation of these functions.
Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This parameter was misinterpreted as an alignment parameter for the
lower bits of the allocated memory region, although it is a constraint
on the higher bits.
Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
The zero_bits parameter doesn't behave as expected, and some 64bit code
use it to allocate memory in the lower 32bit address space.
The expected full behaviour is:
* zero_bits == 0: no constraint on address range
* 0 < zero_bits <= 15: returned address should have as many upper bits
set to 0, starting at bit 31. In 64bit mode,
upper 32bits should all be 0 as well.
* 15 < zero_bits <= 31: unsure, but probably same as zero_bits == 15.
* zero_bits > 31: (64bit/WoW64 only) zero_bits behaves as a bitmask, as
if it was set to the number of leading 0 in the
bitmask, works in the whole 64bit range.
Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
Rémi Bernon