diff options
Diffstat (limited to 'arch/x86_64/include')
8 files changed, 175 insertions, 0 deletions
diff --git a/arch/x86_64/include/arch/boot/pointers.hpp b/arch/x86_64/include/arch/boot/pointers.hpp index fe9c657..2a43f22 100644 --- a/arch/x86_64/include/arch/boot/pointers.hpp +++ b/arch/x86_64/include/arch/boot/pointers.hpp @@ -10,6 +10,11 @@ namespace teachos::arch::boot */ extern "C" size_t const multiboot_information_pointer; + /** + * @brief Address pointing to the start of the multiboot information structure. + */ + extern "C" size_t const segment_register_reload_pointer; + } // namespace teachos::arch::boot #endif // TEACHOS_ARCH_X86_64_BOOT_POINTERS_HPP diff --git a/arch/x86_64/include/arch/context_switching/descriptor_table/gate_descriptor.hpp b/arch/x86_64/include/arch/context_switching/descriptor_table/gate_descriptor.hpp new file mode 100644 index 0000000..f410219 --- /dev/null +++ b/arch/x86_64/include/arch/context_switching/descriptor_table/gate_descriptor.hpp @@ -0,0 +1,15 @@ +#ifndef TEACHOS_ARCH_X86_64_CONTEXT_SWITCHING_DESCRIPTOR_TABLE_GATE_DESCRIPTOR_HPP +#define TEACHOS_ARCH_X86_64_CONTEXT_SWITCHING_DESCRIPTOR_TABLE_GATE_DESCRIPTOR_HPP + +namespace teachos::arch::context_switching::descriptor_table +{ + struct [[gnu::packed]] gate_descriptor + { + /** + * @brief Default Constructor. + */ + gate_descriptor() = default; + }; +} // namespace teachos::arch::context_switching::descriptor_table + +#endif // TEACHOS_ARCH_X86_64_CONTEXT_SWITCHING_DESCRIPTOR_TABLE_GATE_DESCRIPTOR_HPP diff --git a/arch/x86_64/include/arch/context_switching/descriptor_table/initialization.hpp b/arch/x86_64/include/arch/context_switching/descriptor_table/initialization.hpp new file mode 100644 index 0000000..c587000 --- /dev/null +++ b/arch/x86_64/include/arch/context_switching/descriptor_table/initialization.hpp @@ -0,0 +1,23 @@ +#ifndef TEACHOS_ARCH_X86_64_CONTEXT_SWITCHING_DESCRIPTOR_TABLE_HPP +#define TEACHOS_ARCH_X86_64_CONTEXT_SWITCHING_DESCRIPTOR_TABLE_HPP + +#include "arch/context_switching/descriptor_table/global_descriptor_table.hpp" +#include "arch/context_switching/descriptor_table/interrupt_descriptor_table.hpp" + +namespace teachos::arch::context_switching::descriptor_table +{ + /** + * @brief TODO + * + */ + struct descriptor_tables + { + global_descriptor_table & gdt; ///< Reference to the global descriptor table. + interrupt_descriptor_table & idt; ///< Reference to the interrupt descriptor table. + }; + + auto initialize_descriptor_tables() -> descriptor_tables; + +} // namespace teachos::arch::context_switching::descriptor_table + +#endif // TEACHOS_ARCH_X86_64_CONTEXT_SWITCHING_DESCRIPTOR_TABLE_HPP diff --git a/arch/x86_64/include/arch/context_switching/descriptor_table/interrupt_descriptor_table.hpp b/arch/x86_64/include/arch/context_switching/descriptor_table/interrupt_descriptor_table.hpp new file mode 100644 index 0000000..c63932d --- /dev/null +++ b/arch/x86_64/include/arch/context_switching/descriptor_table/interrupt_descriptor_table.hpp @@ -0,0 +1,14 @@ +#ifndef TEACHOS_ARCH_X86_64_CONTEXT_SWITCHING_DESCRIPTOR_TABLE_INTERRUPT_DESCRIPTOR_TABLE_HPP +#define TEACHOS_ARCH_X86_64_CONTEXT_SWITCHING_DESCRIPTOR_TABLE_INTERRUPT_DESCRIPTOR_TABLE_HPP + +namespace teachos::arch::context_switching::descriptor_table +{ + struct interrupt_descriptor_table + { + }; + + auto initialize_interrupt_descriptor_table() -> void; + +} // namespace teachos::arch::context_switching::descriptor_table + +#endif // TEACHOS_ARCH_X86_64_CONTEXT_SWITCHING_DESCRIPTOR_TABLE_INTERRUPT_DESCRIPTOR_TABLE_HPP diff --git a/arch/x86_64/include/arch/context_switching/descriptor_table/interrupt_descriptor_table_pointer.hpp b/arch/x86_64/include/arch/context_switching/descriptor_table/interrupt_descriptor_table_pointer.hpp new file mode 100644 index 0000000..e8935f4 --- /dev/null +++ b/arch/x86_64/include/arch/context_switching/descriptor_table/interrupt_descriptor_table_pointer.hpp @@ -0,0 +1,42 @@ +#ifndef TEACHOS_ARCH_X86_64_CONTEXT_SWITCHING_DESCRIPTOR_TABLE_INTERRUPT_DESCRIPTOR_TABLE_POINTER_HPP +#define TEACHOS_ARCH_X86_64_CONTEXT_SWITCHING_DESCRIPTOR_TABLE_INTERRUPT_DESCRIPTOR_TABLE_POINTER_HPP + +#include "arch/context_switching/descriptor_table/gate_descriptor.hpp" +#include "arch/stl/vector.hpp" + +#include <cstdint> + +namespace teachos::arch::context_switching::descriptor_table +{ + typedef stl::vector<gate_descriptor> interrupt_descriptor_table; + + /** + * @brief Represents a pointer to the Interrupt Descriptor Table (IDT). + * + * This structure is used to store the base address and length of the IDT. + */ + struct [[gnu::packed]] interrupt_descriptor_table_pointer + { + /** + * @brief Default constructor. + */ + interrupt_descriptor_table_pointer() = default; + + /** + * @brief Constructor. + */ + interrupt_descriptor_table_pointer(uint16_t table_length, interrupt_descriptor_table * address); + + /** + * @brief Defaulted three-way comparsion operator. + */ + auto operator<=>(interrupt_descriptor_table_pointer const & other) const -> std::strong_ordering = default; + + private: + uint16_t table_length = {}; ///< The amount of segment descriptor entries in the global descriptor table - 1. + interrupt_descriptor_table address = {}; ///< Non-owning pointer to the IDT base address. + }; + +} // namespace teachos::arch::context_switching::descriptor_table + +#endif // TEACHOS_ARCH_X86_64_CONTEXT_SWITCHING_DESCRIPTOR_TABLE_INTERRUPT_DESCRIPTOR_TABLE_POINTER_HPP diff --git a/arch/x86_64/include/arch/kernel/cpu/idtr.hpp b/arch/x86_64/include/arch/kernel/cpu/idtr.hpp new file mode 100644 index 0000000..724fbdf --- /dev/null +++ b/arch/x86_64/include/arch/kernel/cpu/idtr.hpp @@ -0,0 +1,27 @@ +#ifndef TEACHOS_ARCH_X86_64_KERNEL_CPU_IDTR_HPP +#define TEACHOS_ARCH_X86_64_KERNEL_CPU_IDTR_HPP + +#include "arch/context_switching/descriptor_table/global_descriptor_table_pointer.hpp" + +#include <bitset> +#include <cstdint> + +namespace teachos::arch::kernel::cpu +{ + + /** + * @brief Returns the value in the IDTR register. + * + * @return Value of IDTR register. + */ + auto store_interrupt_descriptor_table() -> context_switching::descriptor_table::interrupt_descriptor_table_pointer; + + /** + * @brief Loads the interrupt_descriptor_table_pointer into the interrupt descriptor table register (IDTR). + */ + auto load_interrupt_descriptor_table( + context_switching::descriptor_table::interrupt_descriptor_table_pointer const & idt_pointer) -> void; + +} // namespace teachos::arch::kernel::cpu + +#endif // TEACHOS_ARCH_X86_64_KERNEL_CPU_IDTR_HPP diff --git a/arch/x86_64/include/arch/kernel/cpu/if.hpp b/arch/x86_64/include/arch/kernel/cpu/if.hpp new file mode 100644 index 0000000..51f5d9a --- /dev/null +++ b/arch/x86_64/include/arch/kernel/cpu/if.hpp @@ -0,0 +1,14 @@ +#ifndef TEACHOS_ARCH_X86_64_KERNEL_CPU_IF_HPP +#define TEACHOS_ARCH_X86_64_KERNEL_CPU_IF_HPP + +namespace teachos::arch::kernel::cpu +{ + /** + * @brief Sets the interrupt flag (IF) in the EFLAGS register. + * This allows the processor to respond to maskable hardware interrupts. + */ + auto set_interrupt_flag() -> void; + +} // namespace teachos::arch::kernel::cpu + +#endif // TEACHOS_ARCH_X86_64_KERNEL_CPU_IF_HPP diff --git a/arch/x86_64/include/arch/kernel/cpu/jmp.hpp b/arch/x86_64/include/arch/kernel/cpu/jmp.hpp new file mode 100644 index 0000000..666174c --- /dev/null +++ b/arch/x86_64/include/arch/kernel/cpu/jmp.hpp @@ -0,0 +1,35 @@ +#ifndef TEACHOS_ARCH_X86_64_KERNEL_CPU_JMP_HPP +#define TEACHOS_ARCH_X86_64_KERNEL_CPU_JMP_HPP + +#include <cstdint> + +namespace teachos::arch::kernel::cpu +{ + /** + * @brief Far jump - A jump to an instruction located in a different segment. + */ + struct [[gnu::packed]] far_pointer + { + uint64_t offset; ///< Selector of the segment in which the jump occurs. + uint16_t segment; ///< Address to jump to within the segment. + }; + + /** + * @brief Near jump - A jump to an instruction within the current code segment. + * + * @param address to jump to. + */ + auto jmp(uint64_t address) -> void; + + /** + * @brief Far jump - A jump to an instruction located in a different segment than the current code segment but at the + * same privilege level. + * + * @param segment in which the jump occurs. + * @param offset to jump to. + */ + auto jmp(uint64_t segment, uint64_t offset) -> void; + +} // namespace teachos::arch::kernel::cpu + +#endif // TEACHOS_ARCH_X86_64_KERNEL_CPU_JMP_HPP |