51 lines
1.2 KiB
C++
51 lines
1.2 KiB
C++
#include <hilbert/kernel/utility.hpp>
|
|
|
|
void *operator new(size_t, void *ptr) {
|
|
return ptr;
|
|
}
|
|
|
|
void operator delete(void *, void *) {}
|
|
|
|
namespace hilbert::kernel::utility {
|
|
|
|
void mark_bitmap_region_zero(
|
|
uint64_t *bitmap, uint64_t start_i, uint64_t end_i) {
|
|
|
|
if (start_i % 64 != 0) {
|
|
uint64_t keep = (1 << (start_i % 64)) - 1;
|
|
bitmap[start_i / 64] &= keep;
|
|
start_i = (start_i / 64 + 1) * 64;
|
|
}
|
|
|
|
if (end_i % 64 != 0) {
|
|
uint64_t replace = (1 << (end_i % 64)) - 1;
|
|
bitmap[end_i / 64] &= ~replace;
|
|
end_i = (end_i / 64) * 64;
|
|
}
|
|
|
|
for (uint64_t i = start_i / 64; i < end_i / 64; ++i)
|
|
bitmap[i] = 0;
|
|
|
|
}
|
|
|
|
void mark_bitmap_region_one(
|
|
uint64_t *bitmap, uint64_t start_i, uint64_t end_i) {
|
|
|
|
if (start_i % 64 != 0) {
|
|
uint64_t keep = (1 << (start_i % 64)) - 1;
|
|
bitmap[start_i / 64] |= ~keep;
|
|
start_i = (start_i / 64 + 1) * 64;
|
|
}
|
|
|
|
if (end_i % 64 != 0) {
|
|
uint64_t replace = (1 << (end_i % 64)) - 1;
|
|
bitmap[end_i / 64] |= replace;
|
|
end_i = (end_i / 64) * 64;
|
|
}
|
|
|
|
for (uint64_t i = start_i / 64; i < end_i / 64; ++i)
|
|
bitmap[i] = 0xffffffffffffffff;
|
|
|
|
}
|
|
|
|
}
|