Merge pull request #61 from nekernel-org/devv0.0.5

NeKernel: v0.0.5 (Arlington)

5 files changed, 63 insertions, 13 deletions

diff --git a/dev/kernel/HALKit/ARM64/HalHandoverStub.s b/dev/kernel/HALKit/ARM64/HalHandoverStub.s
index 0f73cf7b..7c70ebfd 100644
--- a/dev/kernel/HALKit/ARM64/HalHandoverStub.s
+++ b/dev/kernel/HALKit/ARM64/HalHandoverStub.s
@@ -9,7 +9,11 @@
 
 .section .ldr
 
+  ;; MAGIC
 .quad 0xDAB4
+  ;; VERSION (1.0.0)
 .word 100
+  ;; CPU (ARM64)
 .word 0
-.word 122
\ No newline at end of file
+  ;; TYPE (KERNEL)
+.word 122
diff --git a/dev/kernel/KernelKit/CoreProcessScheduler.h b/dev/kernel/KernelKit/CoreProcessScheduler.h
index 56c2bce0..f40ffc81 100644
--- a/dev/kernel/KernelKit/CoreProcessScheduler.h
+++ b/dev/kernel/KernelKit/CoreProcessScheduler.h
@@ -104,6 +104,40 @@ struct PROCESS_FILE_TREE {
   };
 };
 
+using ProcessCtx = UInt32;
+
+template <typename T>
+struct PROCESS_SPECIAL_TREE {
+  static constexpr auto kHeap    = false;
+  static constexpr auto kFile    = false;
+  static constexpr auto kSpecial = true;
+
+  T     Entry{nullptr};
+  SizeT EntrySize{0UL};
+  SizeT EntryPad{0UL};
+
+  /// @brief a context is where the resource comes from.
+  ProcessCtx EntryContext{0UL};  // could be a socket, printer, device...
+
+  UInt32 Color{kBlackTreeKind};
+
+  struct PROCESS_SPECIAL_TREE<T>* Parent {
+    nullptr
+  };
+
+  struct PROCESS_SPECIAL_TREE<T>* Child {
+    nullptr
+  };
+
+  struct PROCESS_SPECIAL_TREE<T>* Prev {
+    nullptr
+  };
+
+  struct PROCESS_SPECIAL_TREE<T>* Next {
+    nullptr
+  };
+};
+
 /***********************************************************************************/
 /// @brief Subsystem enum type.
 /***********************************************************************************/
@@ -113,8 +147,8 @@ enum class ProcessSubsystem : Int32 {
   kProcessSubsystemUser,
   kProcessSubsystemService,
   kProcessSubsystemDriver,
+  kProcessSubsystemCount   = kProcessSubsystemDriver - kProcessSubsystemSecurity + 1,
   kProcessSubsystemInvalid = 0xFFFFFFF,
-  kProcessSubsystemCount   = 4,
 };
 
 /***********************************************************************************/
@@ -127,13 +161,14 @@ enum class ProcessStatusKind : Int32 {
   kKilled,
   kFrozen,
   kFinished,
-  kCount = 6,
+  kCount = kFinished - kStarting + 1,
 };
 
 /***********************************************************************************/
 //! @brief Affinity is the amount of nano-seconds this process is going to run.
 /***********************************************************************************/
 enum class AffinityKind : Int32 {
+  kInvalid      = 0,
   kRealTime     = 100,
   kVeryHigh     = 150,
   kHigh         = 200,
@@ -147,29 +182,29 @@ enum class AffinityKind : Int32 {
 /***********************************************************************************/
 
 inline bool operator<(AffinityKind lhs, AffinityKind rhs) {
-  Int32 lhs_int = static_cast<Int>(lhs);
-  Int32 rhs_int = static_cast<Int>(rhs);
+  Int32 lhs_int = static_cast<Int32>(lhs);
+  Int32 rhs_int = static_cast<Int32>(rhs);
 
   return lhs_int < rhs_int;
 }
 
 inline bool operator>(AffinityKind lhs, AffinityKind rhs) {
-  Int32 lhs_int = static_cast<Int>(lhs);
-  Int32 rhs_int = static_cast<Int>(rhs);
+  Int32 lhs_int = static_cast<Int32>(lhs);
+  Int32 rhs_int = static_cast<Int32>(rhs);
 
   return lhs_int > rhs_int;
 }
 
 inline bool operator<=(AffinityKind lhs, AffinityKind rhs) {
   Int32 lhs_int = static_cast<Int>(lhs);
-  Int32 rhs_int = static_cast<Int>(rhs);
+  Int32 rhs_int = static_cast<Int32>(rhs);
 
   return lhs_int <= rhs_int;
 }
 
 inline bool operator>=(AffinityKind lhs, AffinityKind rhs) {
-  Int32 lhs_int = static_cast<Int>(lhs);
-  Int32 rhs_int = static_cast<Int>(rhs);
+  Int32 lhs_int = static_cast<Int32>(lhs);
+  Int32 rhs_int = static_cast<Int32>(rhs);
 
   return lhs_int >= rhs_int;
 }
@@ -178,7 +213,7 @@ using PTime       = UInt64;
 using ProcessTime = PTime;
 
 /***********************************************************************************/
-//! @brief Local Process identifier.
+//! @brief Local Process Identifier type.
 /***********************************************************************************/
 using ProcessID = Int64;
 
diff --git a/dev/kernel/KernelKit/ZXD.h b/dev/kernel/KernelKit/ZXD.h
index f1c99a21..966c54c7 100644
--- a/dev/kernel/KernelKit/ZXD.h
+++ b/dev/kernel/KernelKit/ZXD.h
@@ -15,6 +15,12 @@ namespace Kernel {
 struct ZXD_EXEC_HEADER;
 struct ZXD_STUB_HEADER;
 
+enum ZXD_FLAGS {
+  kZXDFlagsInvalid,
+  kZXDFlagsDriver,
+  kZXDFlagsCount,
+};
+
 /// @brief ZXD executable header
 /// @details This header is used to identify ZXD executable files.
 struct PACKED ZXD_EXEC_HEADER {
@@ -41,4 +47,7 @@ struct PACKED ZXD_STUB_HEADER {
   UInt32 fStubOffset;
   UInt32 fStubCRC32;
 };
+
+using ZXD_EXEC_HEADER_PTR = ZXD_EXEC_HEADER*;
+using ZXD_STUB_HEADER_PTR = ZXD_STUB_HEADER*;
 }  // namespace Kernel
diff --git a/dev/kernel/src/FS/HeFS+FileSystemParser.cc b/dev/kernel/src/FS/HeFS+FileSystemParser.cc
index f1531b4c..86f929c0 100644
--- a/dev/kernel/src/FS/HeFS+FileSystemParser.cc
+++ b/dev/kernel/src/FS/HeFS+FileSystemParser.cc
@@ -88,7 +88,8 @@ namespace Detail {
   /// @brief Simple algorithm to hash directory entries for INDs.
   /// @param path the directory path.
   /// @return The hashed path.
-  STATIC UInt64 hefsi_hash_64(const Utf8Char* path) {
+  template <typename CharT = Utf8Char>
+  STATIC UInt64 hefsi_hash_64(const CharT* path) {
     if (!path || *path == 0) return 0;
 
     const UInt64 kFnvBaseOffset  = 0xcbf29ce484222325ULL;
@@ -97,7 +98,7 @@ namespace Detail {
     UInt64 hash = kFnvBaseOffset;
 
     while (*path) {
-      hash ^= (Utf8Char) (*path++);
+      hash ^= (CharT) (*path++);
       hash *= kFnvPrimeNumber;
     }
 
diff --git a/dev/kernel/src/UserProcessScheduler.cc b/dev/kernel/src/UserProcessScheduler.cc
index 15da4431..174862a4 100644
--- a/dev/kernel/src/UserProcessScheduler.cc
+++ b/dev/kernel/src/UserProcessScheduler.cc
@@ -587,6 +587,7 @@ ErrorOr<ProcessID> UserProcessHelper::TheCurrentPID() {
 /// @retval false cannot be schedulded.
 Bool UserProcessHelper::CanBeScheduled(const USER_PROCESS& process) {
   if (process.Status != ProcessStatusKind::kRunning) return No;
+  if (process.Affinity == AffinityKind::kInvalid) return No;
   if (process.StackSize > kSchedMaxStackSz) return No;
   if (!process.Name[0]) return No;