kernel: Refactor AHCI I/O path, enhance memory allocators, and cleanup obsolete script

- Removed unused `build_gcc.sh` script.
- Namespaced CPU feature flags under `NeOS` and transitioned from enum to unnamed enum for scoping.
- Renamed `drv_std_input_output` to `drv_std_input_output_ahci` for clarity.
- Improved AHCI driver documentation and added zeroing for read buffers.
- Added optional `pad` parameter to memory allocators: `mm_alloc_bitmap`, `mm_new_heap`, `PageMgr::Request`, etc.
- Updated bitmap allocator to correctly handle and align with padded sizes.
- Added `fPad` field to memory header block.
- Fixed `ATA-DMA` mode comment, corrected PRD usage and logic.
- Improved code documentation and formatting in `UserProcessScheduler`, `PageMgr`, and related components.
- Enhanced safety in process memory cleanup (e.g., `StackReserve` cleanup).

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/dev/kernel/src/PageMgr.cc b/dev/kernel/src/PageMgr.cc
index eb7c7e03..6a8622ed 100644
--- a/dev/kernel/src/PageMgr.cc
+++ b/dev/kernel/src/PageMgr.cc
@@ -57,10 +57,10 @@ namespace NeOS
 	/// @param User user mode?
 	/// @param ExecDisable disable execution on page?
 	/// @return
-	PTEWrapper PageMgr::Request(Boolean Rw, Boolean User, Boolean ExecDisable, SizeT Sz)
+	PTEWrapper PageMgr::Request(Boolean Rw, Boolean User, Boolean ExecDisable, SizeT Sz, SizeT Pad)
 	{
 		// Store PTE wrapper right after PTE.
-		VoidPtr ptr = NeOS::HAL::mm_alloc_bitmap(Rw, User, Sz, false);
+		VoidPtr ptr = NeOS::HAL::mm_alloc_bitmap(Rw, User, Sz, NO, Pad);
 
 		return PTEWrapper{Rw, User, ExecDisable, reinterpret_cast<UIntPtr>(ptr)};
 	}