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make ALIGNMENT_CEILING into a function

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This commit is contained in:
Daniel Micay 2018-10-14 18:20:18 -04:00
parent 118549451b
commit 8b033c5e44
1 changed files with 4 additions and 2 deletions
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6
pages.c
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@ -4,7 +4,9 @@
#include "pages.h"
#include "util.h"
#define ALIGNMENT_CEILING(s, alignment) (((s) + (alignment - 1)) & ((~(alignment)) + 1))
static uintptr_t alignment_ceiling(uintptr_t s, uintptr_t alignment) {
return ((s) + (alignment - 1)) & ((~alignment) + 1);
}
void *allocate_pages(size_t usable_size, size_t guard_size, bool unprotect) {
size_t real_size;
@ -54,7 +56,7 @@ void *allocate_pages_aligned(size_t usable_size, size_t alignment, size_t guard_
void *usable = (char *)real + guard_size;
size_t lead_size = ALIGNMENT_CEILING((uintptr_t)usable, alignment) - (uintptr_t)usable;
size_t lead_size = alignment_ceiling((uintptr_t)usable, alignment) - (uintptr_t)usable;
size_t trail_size = alloc_size - lead_size - usable_size;
void *base = (char *)usable + lead_size;