From f0acad6f3206079d804b2f59aace0dc32dbeb6dc Mon Sep 17 00:00:00 2001 From: Amlal El Mahrouss Date: Thu, 19 Feb 2026 08:14:48 +0100 Subject: kernel: lots of tweaks and improvements, WIP: ASN, FileMgr support for OpenHeFS. Signed-off-by: Amlal El Mahrouss --- .../HALKit/AMD64/HalSchedulerCorePrimitives.cpp | 49 ++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 src/kernel/HALKit/AMD64/HalSchedulerCorePrimitives.cpp (limited to 'src/kernel/HALKit/AMD64/HalSchedulerCorePrimitives.cpp') diff --git a/src/kernel/HALKit/AMD64/HalSchedulerCorePrimitives.cpp b/src/kernel/HALKit/AMD64/HalSchedulerCorePrimitives.cpp new file mode 100644 index 00000000..3571d2af --- /dev/null +++ b/src/kernel/HALKit/AMD64/HalSchedulerCorePrimitives.cpp @@ -0,0 +1,49 @@ +// Copyright 2024-2025, Amlal El Mahrouss (amlal@nekernel.org) +// Licensed under the Apache License, Version 2.0 (see LICENSE file) +// Official repository: https://github.com/nekernel-org/nekernel + +#include +#include + +namespace Kernel { +/***********************************************************************************/ +/// @brief Unimplemented function (crashes by default) +/// @param +/***********************************************************************************/ + +EXTERN_C Void __ne_pure_call(UserProcess* process) { + if (process) process->Crash(); +} + +/***********************************************************************************/ +/// @brief Validate user stack. +/// @param stack_ptr the frame pointer. +/***********************************************************************************/ + +EXTERN_C Bool hal_check_task(HAL::StackFramePtr stack_ptr) { + if (!stack_ptr) return No; + + return stack_ptr->SP > 0 && stack_ptr->IP > 0; +} + +/// @brief Wakes up thread. +/// Wakes up thread from the hang state. +Void mp_wakeup_thread(HAL::StackFrame* stack) { + if (!hal_check_task(stack)) return; + + // RIP is always in R15. R15 is reserved for the RIP. + stack->IP = stack->R15; + + Kernel::UserProcessHelper::StartScheduling(); +} + +/// @brief makes the thread sleep on a loop. +/// hooks and hangs thread to prevent code from executing. +Void mp_hang_thread(HAL::StackFrame* stack) { + if (!hal_check_task(stack)) return; + + // Store IP in R15 + stack->R15 = stack->IP; + stack->IP = 0UL; +} +} // namespace Kernel -- cgit v1.2.3