blob: 84086929930e6b1485e8ef513550569a93d40c2a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/* ========================================
Copyright (C) 2024-2025, Amlal El Mahrouss, licensed under the Apache 2.0 license.
======================================== */
#include <KernelKit/DebugOutput.h>
#include <NeKit/Pmm.h>
#if defined(__NE_ARM64__)
#include <HALKit/ARM64/Processor.h>
#endif // defined(__NE_ARM64__)
#if defined(__NE_AMD64__)
#include <HALKit/AMD64/Processor.h>
#endif // defined(__NE_AMD64__)
namespace Kernel {
/***********************************************************************************/
/// @brief Pmm constructor.
/***********************************************************************************/
Pmm::Pmm() : fPageMgr() {
kout << "[PMM] Allocate PageMemoryMgr.\r";
}
Pmm::~Pmm() = default;
/***********************************************************************************/
/// @param If this returns Null pointer, enter emergency mode.
/// @param user is this a user page?
/// @param readWrite is it r/w?
/***********************************************************************************/
Ref<PTEWrapper> Pmm::RequestPage(Boolean user, Boolean readWrite) {
PTEWrapper pt = fPageMgr.Leak().Request(user, readWrite, false, kPageSize, 0);
if (pt.fPresent) {
kout << "[PMM]: Allocation failed.\r";
return {pt};
}
return Ref<PTEWrapper>(pt);
}
Boolean Pmm::FreePage(Ref<PTEWrapper> PageRef) {
if (!PageRef) return false;
PageRef.Leak().fPresent = false;
return true;
}
Boolean Pmm::TogglePresent(Ref<PTEWrapper> PageRef, Boolean Enable) {
if (!PageRef) return false;
PageRef.Leak().fPresent = Enable;
return true;
}
Boolean Pmm::ToggleUser(Ref<PTEWrapper> PageRef, Boolean Enable) {
if (!PageRef) return false;
PageRef.Leak().fRw = Enable;
return true;
}
Boolean Pmm::ToggleRw(Ref<PTEWrapper> PageRef, Boolean Enable) {
if (!PageRef) return false;
PageRef.Leak().fRw = Enable;
return true;
}
Boolean Pmm::ToggleShare(Ref<PTEWrapper> PageRef, Boolean Enable) {
if (!PageRef) return false;
PageRef.Leak().fShareable = Enable;
return true;
}
} // namespace Kernel
|
