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authorFelix Morgner <felix.morgner@ost.ch>2026-04-16 10:29:30 +0200
committerFelix Morgner <felix.morgner@ost.ch>2026-04-29 09:05:04 +0200
commit1b964278762dde86b0b737bd9a34fec569339f54 (patch)
tree7fe0f4707e05f46461f03744d178f413b7bbca28 /arch/x86_64/src
parentd906d70c94c2a40d5fc6fd26056c7bc57d540002 (diff)
downloadteachos-1b964278762dde86b0b737bd9a34fec569339f54.tar.xz
teachos-1b964278762dde86b0b737bd9a34fec569339f54.zip
x86_64: use p1204 project layout
Diffstat (limited to 'arch/x86_64/src')
-rw-r--r--arch/x86_64/src/boot/boot32.S443
-rw-r--r--arch/x86_64/src/boot/entry64.s62
-rw-r--r--arch/x86_64/src/boot/initialize_runtime.cpp22
-rw-r--r--arch/x86_64/src/boot/multiboot.s33
-rw-r--r--arch/x86_64/src/bus/isa.cpp14
-rw-r--r--arch/x86_64/src/cpu/initialization.cpp164
-rw-r--r--arch/x86_64/src/cpu/interrupt_stubs.S112
-rw-r--r--arch/x86_64/src/cpu/interrupts.cpp203
-rw-r--r--arch/x86_64/src/debug/qemu_output.cpp25
-rw-r--r--arch/x86_64/src/devices/init.cpp76
-rw-r--r--arch/x86_64/src/devices/legacy_pit.cpp60
-rw-r--r--arch/x86_64/src/devices/local_apic.cpp134
-rw-r--r--arch/x86_64/src/memory/higher_half_mapper.cpp119
-rw-r--r--arch/x86_64/src/memory/kernel_mapper.cpp117
-rw-r--r--arch/x86_64/src/memory/mmu.cpp19
-rw-r--r--arch/x86_64/src/memory/page_table.cpp82
-rw-r--r--arch/x86_64/src/memory/region_allocator.cpp165
-rw-r--r--arch/x86_64/src/vga/text/buffer.cpp101
-rw-r--r--arch/x86_64/src/vga/text/device.cpp60
19 files changed, 0 insertions, 2011 deletions
diff --git a/arch/x86_64/src/boot/boot32.S b/arch/x86_64/src/boot/boot32.S
deleted file mode 100644
index e6fcd85..0000000
--- a/arch/x86_64/src/boot/boot32.S
+++ /dev/null
@@ -1,443 +0,0 @@
-#include <arch/boot/boot.hpp>
-
-/**
- * @brief Uninitialized data for the bootstrapping process.
- */
-.section .boot_bss, "aw", @nobits
-
-page_maps_start:
-page_map_level_4: .skip 512 * 8
-page_map_level_3_high: .skip 512 * 8
-page_map_level_3_low: .skip 512 * 8
-page_map_level_2: .skip 512 * 8
-page_maps_end = .
-page_maps_size = page_maps_end - page_maps_start
-
-/**
- * @brief Storage for the multiboot2 information pointer.
- */
-.global multiboot_information_pointer
-multiboot_information_pointer: .skip 8
-
-/**
- * @brief Storage for the bootstrap stack.
- */
-.section .boot_stack, "aw", @nobits
-.align 16
-
-early_stack_bottom: .skip 1 << 8
-early_stack_top:
-early_stack_size = early_stack_top - early_stack_bottom
-
-/**
- * @brief Constants for the bootstrapping process.
- */
-.section .boot_rodata, "a", @progbits
-
-.global global_descriptor_table_data
-
-/**
- * @brief A basic GDT for long mode.
- */
-global_descriptor_table:
-global_descriptor_table_null = . - global_descriptor_table
-.quad 0
-global_descriptor_table_code = . - global_descriptor_table
-.quad GDT_READ_WRITE | GDT_EXECUTABLE | GDT_DESCRIPTOR_TYPE | GDT_PRESENT | GDT_LONG_MODE | (1 << 55)
-global_descriptor_table_data = . - global_descriptor_table
-.quad GDT_READ_WRITE | GDT_DESCRIPTOR_TYPE | GDT_PRESENT | (1 << 54) | (1 << 55)
-global_descriptor_table_end:
-
-message_prefix_panic: .string "Panic: "
-message_not_loaded_by_multiboot2: .string "The operating system was not loaded by a Multiboot 2 loader."
-message_cpuid_instruction_no_supported: .string "The 'cpuid' instruction is not supported on this platform."
-message_long_mode_not_supported: .string "Long mode is not supported by this platform."
-message_return_from_kernel_main: .string "Execution returned from kernel main."
-
-/**
- * @brief Initialized data for the bootstrapping process.
- */
-.section .boot_data, "aw", @progbits
-
-/**
- * @brief A pointer to the current position within the VGA text buffer.
- */
-.global vga_buffer_pointer
-vga_buffer_pointer: .quad 0xb8000
-
-/**
- * @brief Code for the bootstrapping process.
- */
-.section .boot_text, "ax", @progbits
-.align 16
-.code32
-
-.macro pie_base
- push %esi
- call 0f
- 0:
- pop %esi
-.endm
-
-.macro function_start
- push %ebp
- mov %esp, %ebp
-.endm
-
-.macro function_end
- leave
- ret
-.endm
-
-.macro pie_function_start
- function_start
- pie_base
-.endm
-
-.macro pie_function_end
- pop %esi
- function_end
-.endm
-
-/**
- * @brief Prepare the environment and start the kernel.
- *
- * This function performs all necessary checks to ensure the system was loaded
- * by the expected loader and supports all features required to run the kernel.
- * If successful, it prepares the system by setting up memory virtualization
- * and then start the kernel proper.
- *
- * @param %eax The Multiboot 2 magic marker.
- * @param %ebx The Multiboot 2 information pointer.
- * @return void This function does not return.
- */
-.global _start
-_start:
- call 0f
-0:
- pop %esi
-
- lea (early_stack_top - 0b)(%esi), %ecx
-
- mov %ecx, %esp
- mov %esp, %ebp
-
- call _assert_loaded_by_multiboot2_loader
- call _save_multiboot_information_pointer
-
- call _assert_cpuid_instruction_is_supported
- call _assert_cpu_supports_long_mode
-
- push $HUGE_PAGES_TO_MAP
- call _prepare_page_maps
- add $4, %esp
-
- call _enable_paging
- call _enable_sse
- call _reload_gdt
-
- lea (_entry64 - 0b)(%esi), %eax
- pushl $global_descriptor_table_code
- pushl %eax
- lret
-
-/**
- * @brief Halt the system.
- *
- * This function will instruct the CPU to halt. It will try to keep the CPU
- * halted, even if interrupts occur.
- *
- * @return This function never returns.
- */
-_halt:
- function_start
-
-1:
- hlt
- jmp 1b
-
- function_end
-
-/**
- * @brief Print a message via the VGA text buffer.
- *
- * @param ebp+12 The message to print.
- * @param ebp+8 The color to print the message in.
- */
-_print:
- pie_function_start
-
- push %edi
- push %ebx
-
- mov 8(%ebp), %al
- mov 12(%ebp), %edx
- mov $0, %ecx
- lea (vga_buffer_pointer - 0b)(%esi), %edi
- mov (%edi), %edi
-
-1:
- mov (%edx, %ecx), %bl
- test %bl, %bl
- je 2f
- mov %bl, (%edi, %ecx, 2)
- mov %al, 1(%edi, %ecx, 2)
- inc %ecx
- jmp 1b
-
-2:
- shl $1, %ecx
- add %ecx, %edi
- lea (vga_buffer_pointer - 0b)(%esi), %ecx
- mov %edi, (%ecx)
-
- pop %ebx
- pop %edi
-
- pie_function_end
-
-/**
- * @brief Print a given panic message and then halt the machine as if by calling ::halt()
- *
- * @param ebp+4 A message to print.
- * @return This function does not return.
- */
-_panic:
- pie_function_start
-
- lea (message_prefix_panic - 0b)(%esi), %eax
-
- push %eax
- push $0x4f
- call _print
-
- mov 8(%ebp), %eax
- mov %eax, 4(%esp)
- call _print
- add $8, %esp
-
- call _halt
-
- pie_function_end
-
-/**
- * Assert that we were loaded by a Multiboot 2 compliant bootloader.
- *
- * This assertion will panic the system if the magic signature was not found.
- * If we were loaded my an appropriate bootloader, this function also saves
- * the provided MBI pointer to `multiboot_information_pointer`.
- */
-_assert_loaded_by_multiboot2_loader:
- pie_function_start
-
- cmp $MULTIBOOT2_MAGIC, %eax
- je 1f
- lea (message_not_loaded_by_multiboot2 - 0b)(%esi), %eax
- push %eax
- call _panic
-1:
- pie_function_end
-
-/**
- * @brief Store the multiboot 2 information pointer in the global memory.
- *
- * @return void
- */
-_save_multiboot_information_pointer:
- pie_function_start
-
- lea (multiboot_information_pointer - 0b)(%esi), %eax
- mov %ebx, (%eax)
-
- pie_function_end
-
-/**
- * @brief Assert that the CPU supports the CPUID instruction.
- *
- * The primary way to check for support of the instruction is to flip the ID
- * bin in EFLAGS and then check if this changed was accepted. If so, the CPU
- * supports the CPUID instruction, otherwise it most-likely doesn't.
- */
-_assert_cpuid_instruction_is_supported:
- pie_function_start
-
- pushfl
- pop %eax
- mov %eax, %ecx
-
- xor $(1 << 21), %eax /* Flip the ID bit */
- push %eax /* Move the new bitset on the stack for loading */
- popfl /* Load the flags with ID set back into EFLAGS */
- pushfl /* Copy the flags back onto the stack */
- pop %eax /* Load the flags for further checking */
-
- push %ecx
- popfl
-
- cmp %ecx, %eax
- jne 1f
- lea (message_cpuid_instruction_no_supported - 0b)(%esi), %eax
- push %eax
- call _panic
-
-1:
- pie_function_end
-
-/**
- * @brief Assert that the CPU supports going into long mode.
- */
-_assert_cpu_supports_long_mode:
- pie_function_start
-
- mov $0x80000000, %eax
- cpuid
- cmp $0x80000001, %eax
- jb 1f
-
- mov $0x80000001, %eax
- cpuid
- test $(1 << 29), %edx
- jnz 2f
-1:
- lea (message_long_mode_not_supported - 0b)(%esi), %eax
- push %eax
- call _panic
-2:
- pie_function_end
-
-/**
- * @brief Prepare a basic page map hierarchy
- *
- * @param ebp+8 The number of huge pages to map
- * @return void
- */
-_prepare_page_maps:
- pie_function_start
-
- push %edi
-
- call _clear_page_map_memory
-
- lea (page_map_level_4 - 0b)(%esi), %edi
- lea (page_map_level_3_low - 0b)(%esi), %eax
- or $0b11, %eax
- mov %eax, (%edi)
-
- lea (page_map_level_3_high - 0b)(%esi), %eax
- or $0b11, %eax
- mov %eax, (511 * 8)(%edi)
-
- lea (page_map_level_3_low - 0b)(%esi), %edi
- lea (page_map_level_2 - 0b)(%esi), %eax
- or $0b11, %eax
- mov %eax, (%edi)
-
- lea (page_map_level_3_high - 0b)(%esi), %edi
- lea (page_map_level_2 - 0b)(%esi), %eax
- or $0b11, %eax
- mov %eax, (510 * 8)(%edi)
-
- lea (page_map_level_2 - 0b)(%esi), %edi
- mov 8(%ebp), %ecx
-
-1:
- dec %ecx
- mov $(1 << 21), %eax
- mul %ecx
- or $0b10000011, %eax
- mov %eax, (%edi, %ecx, 8)
-
- test %ecx, %ecx
- jnz 1b
-
- pop %edi
-
- pie_function_end
-
-/**
- * @brief Clear all page map memory by filling it with 0s.
- *
- * @return void
- */
-_clear_page_map_memory:
- pie_function_start
-
- push %edi
-
- xor %eax, %eax
- mov $page_maps_size, %ecx
- shr $2, %ecx
- lea (page_maps_start - 0b)(%esi), %edi
- rep stosl
-
- pop %edi
-
- pie_function_end
-
-/**
- * @p Enable memory virtualization via paging.
- *
- * Note: This routine expects for there to be a valid set of page maps already
- * set up for use.
- *
- * @return void
- */
-_enable_paging:
- pie_function_start
-
- lea (page_map_level_4 - 0b)(%esi), %eax
- mov %eax, %cr3
-
- /* Enable Physical Address Extension */
- mov %cr4, %eax
- or $(1 << 5), %eax
- mov %eax, %cr4
-
- /* Enable long mode support */
- mov $0xC0000080, %ecx
- rdmsr
- or $(1 << 8), %eax
- wrmsr
-
- /* Enable paging */
- mov %cr0, %eax
- or $(1 << 31), %eax
- mov %eax, %cr0
-
- pie_function_end
-
-/**
- * @brief Enable use of SSE instructions.
- */
-_enable_sse:
- function_start
-
- mov %cr0, %eax
- and $0xfffffffb, %eax
- or $0x00000002, %eax
- mov %eax, %cr0
-
- mov %cr4, %eax
- or $(3 << 9), %eax
- mov %eax, %cr4
-
- function_end
-
-/**
- * @brief Prepare a new GTD and load make it active.
- *
- * @return void
- */
-_reload_gdt:
- pie_function_start
-
- sub $10, %esp
- lea (global_descriptor_table - 0b)(%esi), %eax
- movw $(global_descriptor_table_end - global_descriptor_table -1), (%esp)
- mov %eax, 2(%esp)
- movl $0, 6(%esp)
-
- lgdt (%esp)
- add $10, %esp
-
- pie_function_end
diff --git a/arch/x86_64/src/boot/entry64.s b/arch/x86_64/src/boot/entry64.s
deleted file mode 100644
index 29fb778..0000000
--- a/arch/x86_64/src/boot/entry64.s
+++ /dev/null
@@ -1,62 +0,0 @@
-.section .stack, "aw", @nobits
-
-.align 16
-.global stack_top
-stack_bottom: .skip 1 << 20
-stack_top:
-stack_size = stack_top - stack_bottom
-
-.section .bss, "aw", @nobits
-
-//! A structure containing information gathered during the bootstrap process.
-//! Expected layout (as described by teachos::boot::information):
-//!
-//! struct
-//! {
-//! multiboot2::information_view const * mbi;
-//! std::size_t vga_buffer_index;
-//! }
-.global bootstrap_information
-bootstrap_information: .skip 16
-
-.section .boot_text, "ax", @progbits
-.code64
-
-.global _entry64
-_entry64:
- mov $global_descriptor_table_data, %rax
- mov %rax, %ss
- mov %rax, %ds
- mov %rax, %es
- mov %rax, %fs
- mov %rax, %gs
-
- mov $stack_top, %rsp
- mov %rsp, %rbp
-
- mov multiboot_information_pointer, %rax
- or $TEACHOS_VMA, %rax
- mov vga_buffer_pointer, %rdx
- sub $0xb8000, %rdx
- mov %rax, (bootstrap_information)
- mov %rdx, (bootstrap_information + 8)
-
- call invoke_global_constructors
-
- xor %rax, %rax
- mov %rax, %rbp
- mov %rax, %rdx
- mov %rax, %rsi
-
- mov $stack_size, %rcx
- shr $3, %rcx
- lea (stack_bottom), %rdi
- rep stosq
-
- mov %rax, %rdi
-
- call main
-
-1:
- hlt
- jmp 1b
diff --git a/arch/x86_64/src/boot/initialize_runtime.cpp b/arch/x86_64/src/boot/initialize_runtime.cpp
deleted file mode 100644
index b08c13c..0000000
--- a/arch/x86_64/src/boot/initialize_runtime.cpp
+++ /dev/null
@@ -1,22 +0,0 @@
-#include <algorithm>
-#include <functional>
-#include <span>
-
-namespace arch::boot
-{
-
- extern "C"
- {
- using global_initializer = auto (*)() -> void;
-
- extern global_initializer __init_array_start;
- extern global_initializer __init_array_end;
-
- auto invoke_global_constructors() -> void
- {
- auto initializers = std::span{&__init_array_start, &__init_array_end};
- std::ranges::for_each(initializers, [](auto invokable) { std::invoke(invokable); });
- }
- }
-
-} // namespace arch::boot \ No newline at end of file
diff --git a/arch/x86_64/src/boot/multiboot.s b/arch/x86_64/src/boot/multiboot.s
deleted file mode 100644
index 37d8afe..0000000
--- a/arch/x86_64/src/boot/multiboot.s
+++ /dev/null
@@ -1,33 +0,0 @@
-.section .boot_mbh, "a"
-.align 8
-
-multiboot_header_start:
-.Lmagic:
- .long 0xe85250d6
-.Larch:
- .long 0
-.Llength:
- .long multiboot_header_end - multiboot_header_start
-.Lchecksum:
- .long 0x100000000 - (0xe85250d6 + 0 + (multiboot_header_end - multiboot_header_start))
-.align 8
-.Lflags_start:
- .word 4
- .word 1
- .long .Lflags_end - .Lflags_start
- .long 3
-.Lflags_end:
-.align 8
-.Linformation_request_start:
- .word 1
- .word 0
- .long .Linformation_request_end - .Linformation_request_start
- .long 3
-.Linformation_request_end:
-.align 8
-.Lend_start:
- .word 0
- .word 0
- .long .Lend_end - .Lend_start
-.Lend_end:
-multiboot_header_end:
diff --git a/arch/x86_64/src/bus/isa.cpp b/arch/x86_64/src/bus/isa.cpp
deleted file mode 100644
index f6cc72d..0000000
--- a/arch/x86_64/src/bus/isa.cpp
+++ /dev/null
@@ -1,14 +0,0 @@
-#include <arch/bus/isa.hpp>
-
-#include <kapi/devices.hpp>
-
-#include <cstddef>
-
-namespace arch::bus
-{
-
- isa::isa(std::size_t major)
- : kapi::devices::bus{major, 0, "isa"}
- {}
-
-} // namespace arch::bus \ No newline at end of file
diff --git a/arch/x86_64/src/cpu/initialization.cpp b/arch/x86_64/src/cpu/initialization.cpp
deleted file mode 100644
index 1be9c82..0000000
--- a/arch/x86_64/src/cpu/initialization.cpp
+++ /dev/null
@@ -1,164 +0,0 @@
-#include <arch/cpu/initialization.hpp>
-
-#include <arch/cpu/global_descriptor_table.hpp>
-#include <arch/cpu/interrupts.hpp>
-#include <arch/cpu/legacy_pic.hpp>
-#include <arch/cpu/segment_descriptor.hpp>
-#include <arch/cpu/task_state_segment.hpp>
-
-#include <kstd/print>
-
-#include <bit>
-#include <cstdint>
-
-namespace arch::cpu
-{
-
- namespace
- {
- constexpr auto gdt_null_descriptor = segment_descriptor{};
-
- constexpr auto gdt_kernel_code_descriptor = segment_descriptor{
- .limit_low = 0xffff,
- .base_low = 0,
- .accessed = false,
- .read_write = false,
- .direction_or_conforming = false,
- .executable = true,
- .type = segment_type::code_or_data,
- .privilege_level = 0,
- .present = true,
- .limit_high = 0xf,
- .long_mode = true,
- .protected_mode = false,
- .granularity = segment_granularity::page,
- .base_high = 0,
- };
-
- constexpr auto gdt_kernel_data_descriptor = segment_descriptor{
- .limit_low = 0xffff,
- .base_low = 0,
- .accessed = false,
- .read_write = true,
- .direction_or_conforming = false,
- .executable = false,
- .type = segment_type::code_or_data,
- .privilege_level = 0,
- .present = true,
- .limit_high = 0xf,
- .long_mode = false,
- .protected_mode = true,
- .granularity = segment_granularity::page,
- .base_high = 0,
- };
-
- constexpr auto gdt_user_code_descriptor = segment_descriptor{
- .limit_low = 0xffff,
- .base_low = 0,
- .accessed = false,
- .read_write = false,
- .direction_or_conforming = false,
- .executable = true,
- .type = segment_type::code_or_data,
- .privilege_level = 3,
- .present = true,
- .limit_high = 0xf,
- .long_mode = true,
- .protected_mode = false,
- .granularity = segment_granularity::page,
- .base_high = 0,
- };
-
- constexpr auto gdt_user_data_descriptor = segment_descriptor{
- .limit_low = 0xffff,
- .base_low = 0,
- .accessed = false,
- .read_write = true,
- .direction_or_conforming = false,
- .executable = false,
- .type = segment_type::code_or_data,
- .privilege_level = 3,
- .present = true,
- .limit_high = 0xf,
- .long_mode = false,
- .protected_mode = false,
- .granularity = segment_granularity::page,
- .base_high = 0,
- };
-
- constexpr auto make_tss_descriptor(task_state_segment const * tss_ptr) -> system_segment_descriptor
- {
- auto const address = std::bit_cast<std::uintptr_t>(tss_ptr);
- auto const limit = sizeof(task_state_segment) - 1;
-
- return system_segment_descriptor{
- {
- .limit_low = limit & 0xffff, // NOLINT(readability-magic-numbers)
- .base_low = address & 0xffffff, // NOLINT(readability-magic-numbers)
- .accessed = false,
- .read_write = false,
- .direction_or_conforming = false,
- .executable = false,
- .type = segment_type::system,
- .privilege_level = 0,
- .present = true,
- .limit_high = (limit >> 16) & 0xf, // NOLINT(readability-magic-numbers)
- .long_mode = false,
- .protected_mode = false,
- .granularity = segment_granularity::byte,
- .base_high = (address >> 24) & 0xff, // NOLINT(readability-magic-numbers)
- },
- (address >> 32) & 0xffff'ffff, // NOLINT(readability-magic-numbers)
- };
- }
- } // namespace
-
- auto initialize_descriptors() -> void
- {
- auto static tss = task_state_segment{};
- auto static tss_descriptor = make_tss_descriptor(&tss);
-
- auto static gdt = global_descriptor_table{
- gdt_null_descriptor, gdt_kernel_code_descriptor, gdt_kernel_data_descriptor,
- gdt_user_code_descriptor, gdt_user_data_descriptor, tss_descriptor,
- };
-
- kstd::println("[x86_64:SYS] Reloading Global Descriptor Table.");
- gdt.load(1, 2);
-
- kstd::println("[x86_64:SYS] Initializing Interrupt Descriptor Table.");
- auto static idt = interrupt_descriptor_table{};
- idt.load();
- }
-
- auto initialize_legacy_interrupts() -> void
- {
- constexpr auto pic_init_command = std::uint8_t{0x11};
- constexpr auto pic_master_offset = std::uint8_t{0x20};
- constexpr auto pic_slave_offset = std::uint8_t{0x28};
- constexpr auto pic_cascade_address = std::uint8_t{0x04};
- constexpr auto pic_cascade_slave_identity = std::uint8_t{0x02};
- constexpr auto pic_use_8086_mode = std::uint8_t{0x01};
- constexpr auto pic_master_mask = std::uint8_t{0x00};
- constexpr auto pic_slave_mask = std::uint8_t{0x00};
-
- pic_master_control_port::write(pic_init_command);
- pic_slave_control_port::write(pic_init_command);
-
- pic_master_data_port::write(pic_master_offset);
- pic_slave_data_port::write(pic_slave_offset);
-
- pic_master_data_port::write(pic_cascade_address);
- pic_slave_data_port::write(pic_cascade_slave_identity);
-
- pic_master_data_port::write(pic_use_8086_mode);
- pic_slave_data_port::write(pic_use_8086_mode);
-
- pic_master_data_port::write(pic_master_mask);
- pic_slave_data_port::write(pic_slave_mask);
-
- pic_master_data_port::write(pic_master_mask);
- pic_slave_data_port::write(pic_slave_mask);
- }
-
-} // namespace arch::cpu
diff --git a/arch/x86_64/src/cpu/interrupt_stubs.S b/arch/x86_64/src/cpu/interrupt_stubs.S
deleted file mode 100644
index e59bdd2..0000000
--- a/arch/x86_64/src/cpu/interrupt_stubs.S
+++ /dev/null
@@ -1,112 +0,0 @@
-.altmacro
-
-.macro ISR_WITHOUT_ERROR_CODE vector
- .global isr\vector
- isr\vector:
- pushq $0
- pushq $\vector
- jmp common_interrupt_handler
-.endm
-
-.macro ISR_WITH_ERROR_CODE vector
- .global isr\vector
- isr\vector:
- pushq $\vector
- jmp common_interrupt_handler
-.endm
-
-.macro ISR_TABLE_ENTRY vector
- .quad isr\vector
-.endm
-
-.section .rodata
-.global isr_stub_table
-.align 16
-
-isr_stub_table:
-.set i, 0
-.rept 256
- ISR_TABLE_ENTRY %i
- .set i, i + 1
-.endr
-
-
-.section .text
-
-common_interrupt_handler:
- push %rax
- push %rbx
- push %rcx
- push %rdx
- push %rbp
- push %rsi
- push %rdi
- push %r8
- push %r9
- push %r10
- push %r11
- push %r12
- push %r13
- push %r14
- push %r15
-
- mov %rsp, %rdi
- call interrupt_dispatch
-
- pop %r15
- pop %r14
- pop %r13
- pop %r12
- pop %r11
- pop %r10
- pop %r9
- pop %r8
- pop %rdi
- pop %rsi
- pop %rbp
- pop %rdx
- pop %rcx
- pop %rbx
- pop %rax
-
- add $16, %rsp
- iretq
-
-ISR_WITHOUT_ERROR_CODE 0
-ISR_WITHOUT_ERROR_CODE 1
-ISR_WITHOUT_ERROR_CODE 2
-ISR_WITHOUT_ERROR_CODE 3
-ISR_WITHOUT_ERROR_CODE 4
-ISR_WITHOUT_ERROR_CODE 5
-ISR_WITHOUT_ERROR_CODE 6
-ISR_WITHOUT_ERROR_CODE 7
-ISR_WITH_ERROR_CODE 8
-ISR_WITHOUT_ERROR_CODE 9
-ISR_WITH_ERROR_CODE 10
-ISR_WITH_ERROR_CODE 11
-ISR_WITH_ERROR_CODE 12
-ISR_WITH_ERROR_CODE 13
-ISR_WITH_ERROR_CODE 14
-ISR_WITHOUT_ERROR_CODE 15
-ISR_WITHOUT_ERROR_CODE 16
-ISR_WITH_ERROR_CODE 17
-ISR_WITHOUT_ERROR_CODE 18
-ISR_WITHOUT_ERROR_CODE 19
-ISR_WITHOUT_ERROR_CODE 20
-ISR_WITH_ERROR_CODE 21
-ISR_WITHOUT_ERROR_CODE 22
-ISR_WITHOUT_ERROR_CODE 23
-ISR_WITHOUT_ERROR_CODE 24
-ISR_WITHOUT_ERROR_CODE 25
-ISR_WITHOUT_ERROR_CODE 26
-ISR_WITHOUT_ERROR_CODE 27
-ISR_WITHOUT_ERROR_CODE 28
-ISR_WITH_ERROR_CODE 29
-ISR_WITH_ERROR_CODE 30
-ISR_WITHOUT_ERROR_CODE 31
-
-.set i, 32
-.rept 256 - 32
- ISR_WITHOUT_ERROR_CODE %i
- .set i, i + 1
-.endr
diff --git a/arch/x86_64/src/cpu/interrupts.cpp b/arch/x86_64/src/cpu/interrupts.cpp
deleted file mode 100644
index f40422f..0000000
--- a/arch/x86_64/src/cpu/interrupts.cpp
+++ /dev/null
@@ -1,203 +0,0 @@
-#include <arch/cpu/interrupts.hpp>
-
-#include <arch/cpu/legacy_pic.hpp>
-#include <arch/cpu/segment_selector.hpp>
-
-#include <kapi/cpu.hpp>
-#include <kapi/interrupts.hpp>
-#include <kapi/memory.hpp>
-
-#include <kstd/print>
-
-#include <cstdint>
-
-namespace arch::cpu
-{
-
- namespace
- {
- enum struct exception
- {
- divide_error,
- debug_exception,
- non_maskable_interrupt,
- breakpoint,
- overflow,
- bound_range_exceeded,
- invalid_opcode,
- device_not_available,
- double_fault,
- coprocessor_segment_overrun,
- invalid_tss,
- segment_not_present,
- stack_segment_fault,
- general_protection_fault,
- page_fault,
- x87_fpu_floating_point_error = 16,
- alignment_check,
- machine_check,
- simd_floating_point_error,
- virtualization_exception,
- control_protection_exception,
- hypervisor_injection_exception = 28,
- vmm_communication_exception,
- security_exception,
- };
-
- constexpr auto number_of_exception_vectors = 32u;
-
- constexpr auto pic_master_irq_start = 0x20;
- constexpr auto pic_master_irq_end = pic_master_irq_start + 8;
- constexpr auto pic_slave_irq_start = pic_master_irq_end;
-
- constexpr auto to_exception_type(exception e)
- {
- switch (e)
- {
- case exception::divide_error:
- case exception::x87_fpu_floating_point_error:
- case exception::simd_floating_point_error:
- return kapi::cpu::exception::type::arithmetic_error;
- case exception::breakpoint:
- return kapi::cpu::exception::type::breakpoint;
- case exception::invalid_opcode:
- return kapi::cpu::exception::type::illegal_instruction;
- case exception::stack_segment_fault:
- return kapi::cpu::exception::type::memory_access_fault;
- case exception::general_protection_fault:
- return kapi::cpu::exception::type::privilege_violation;
- case exception::page_fault:
- return kapi::cpu::exception::type::page_fault;
- case exception::alignment_check:
- return kapi::cpu::exception::type::alignment_fault;
- default:
- return kapi::cpu::exception::type::unknown;
- }
- }
-
- constexpr auto has_error_code(exception e)
- {
- switch (e)
- {
- case exception::double_fault:
- case exception::invalid_tss:
- case exception::segment_not_present:
- case exception::stack_segment_fault:
- case exception::general_protection_fault:
- case exception::page_fault:
- case exception::alignment_check:
- case exception::control_protection_exception:
- case exception::security_exception:
- return true;
- default:
- return false;
- }
- }
-
- auto dispatch_exception(interrupt_frame * frame) -> bool
- {
- auto type = to_exception_type(static_cast<exception>(frame->interrupt.number));
- auto fault_address = kapi::memory::linear_address{};
- auto instruction_pointer = frame->cpu_saved.rip;
-
- switch (type)
- {
- case kapi::cpu::exception::type::page_fault:
- {
- asm volatile("mov %%cr2, %0" : "=r"(fault_address));
- auto present = (frame->interrupt.error_code & 0x1) != 0;
- auto write = (frame->interrupt.error_code & 0x2) != 0;
- auto user = (frame->interrupt.error_code & 0x4) != 0;
-
- return kapi::cpu::dispatch({type, instruction_pointer, fault_address, present, write, user});
- }
- default:
- return kapi::cpu::dispatch({type, instruction_pointer});
- }
- }
-
- auto acknowledge_pic_interrupt(interrupt_frame * frame) -> void
- {
- if (frame->interrupt.number >= pic_slave_irq_start)
- {
- pic_slave_control_port::write(pic_end_of_interrupt);
- }
- pic_master_control_port::write(pic_end_of_interrupt);
- }
- } // namespace
-
- extern "C"
- {
- extern std::uintptr_t const isr_stub_table[256];
-
- auto interrupt_dispatch(interrupt_frame * frame) -> void
- {
- auto [number, code] = frame->interrupt;
-
- if (number < number_of_exception_vectors)
- {
- if (!dispatch_exception(frame))
- {
- if (has_error_code(static_cast<exception>(number)))
- {
- kstd::println(kstd::print_sink::stderr,
- "[x86_64:CPU] Unhandled exception number {:#04x} received with code {:#04x}", number, code);
- }
- else
- {
- kstd::println(kstd::print_sink::stderr, "[x86_64:CPU] Unhandled exception number {:#04x} received", number);
- }
-