Some restructuring.

targets/_any/SConscript

@@ -1,66 +1,18 @@
 Import('env')
 
-def _resource(env, res, symbol):
-    def _generate_s(target, source, env):
-        with open(target[0].abspath, 'w') as f:
-            f.write(f'''
-    .section .rodata
-    .global {symbol}
-    .type {symbol} @object
-
-    .section .rodata
-    .global {symbol}_SIZE
-    .type {symbol}_SIZE @object
-{symbol}:
-    .incbin "{res}"
-{symbol}_END:
-{symbol}_SIZE:
-    .int {symbol}_END - {symbol}
-''')
-        with open(target[1].abspath, 'w') as f:
-            f.write(f'''
-#pragma once
-
-#include <stdint.h>
-
-extern "C"
-{{
-extern const uint8_t {symbol}[];
-extern const unsigned {symbol}_SIZE;
-}}
-
-''')
-    env.Command([f'{res}.s', f'{res}.hpp'.replace('src/', 'include/')], res, action = _generate_s)
-env.AddMethod(_resource, 'Resource')
-
-isr_sources = Split('''
-    src/drivers/pic.cpp
-    src/drivers/ps2.cpp
-    src/os/interrupt.cpp
-''')
 any_target_sources = Split('''
     src/app/main.cpp
 
-    src/drivers/pci.cpp
-    src/drivers/usb.cpp
-
     src/libs/psf.cpp
 
-    src/os/draw.cpp
-    src/os/memory.cpp
-    src/os/panic.cpp
-    src/os/syscall.cpp
-    src/os/tty.cpp
-    src/os/resources/lat9-08.psf.s
-
     src/cstdlib/assert.cpp
     src/cstdlib/stdio.cpp
     src/cstdlib/stdlib.cpp
     src/cstdlib/string.cpp
 ''')
-env.Resource(env.File('src/os/resources/lat9-08.psf').abspath, 'LAT9_08')
 
 env.Append(KERNEL_SOURCES = [env.File(f) for f in any_target_sources])
-env.Append(KERNEL_ISR_SOURCES = [env.File(f) for f in isr_sources])
+
+env = SConscript('kernel/SConscript', exports = 'env')
 
 Return('env')

targets/_any/include/os/interrupt.hpp

@@ -1,47 +0,0 @@
-
-#pragma once
-
-#if !defined(BAD_APPLE_OS_INTERRUPT_HPP_INCLUDED)
-#define BAD_APPLE_OS_INTERRUPT_HPP_INCLUDED
-
-#include <cstdint>
-
-namespace baos
-{
-#if defined(__x86_64__)
-struct InterruptFrame
-{
-    std::uint64_t ip;
-    std::uint64_t cs;
-    std::uint64_t flags;
-    std::uint64_t sp;
-    std::uint64_t ss;
-};
-using interrupt_error_code_t = std::uint64_t;
-#endif
-
-using interrupt_handler_t = __attribute__((interrupt)) void(*)(baos::InterruptFrame*);
-using interrupt_handler_with_error_code_t = __attribute__((interrupt)) void(*)(baos::InterruptFrame*, interrupt_error_code_t);
-
-__attribute__((interrupt))
-void isrDivisionError(InterruptFrame* interruptFrame) noexcept;
-
-__attribute__((interrupt)) void isrOverflow(InterruptFrame* interruptFrame) noexcept;
-__attribute__((interrupt)) void isrBoundRangeExceeded(InterruptFrame* interruptFrame) noexcept;
-__attribute__((interrupt)) void isrInvalidOpCode(InterruptFrame* interruptFrame) noexcept;
-__attribute__((interrupt)) void isrDeviceNotAvailable(InterruptFrame* interruptFrame) noexcept;
-__attribute__((interrupt)) void isrDoubleFault(InterruptFrame* interruptFrame) noexcept;
-__attribute__((interrupt)) void isrInvalidTSS(InterruptFrame* interruptFrame, interrupt_error_code_t errorCode) noexcept;
-__attribute__((interrupt)) void isrSegmentNotPresent(InterruptFrame* interruptFrame, interrupt_error_code_t errorCode) noexcept;
-__attribute__((interrupt)) void isrStackSegmentFault(InterruptFrame* interruptFrame, interrupt_error_code_t errorCode) noexcept;
-__attribute__((interrupt)) void isrGeneralProtectionFault(InterruptFrame* interruptFrame, interrupt_error_code_t errorCode) noexcept;
-__attribute__((interrupt)) void isrPageFault(InterruptFrame* interruptFrame, interrupt_error_code_t errorCode) noexcept;
-__attribute__((interrupt)) void isrX87FPException(InterruptFrame* interruptFrame) noexcept;
-__attribute__((interrupt)) void isrAlignmentCheck(InterruptFrame* interruptFrame, interrupt_error_code_t errorCode) noexcept;
-__attribute__((interrupt)) void isrMachineCheck(InterruptFrame* interruptFrame) noexcept;
-__attribute__((interrupt)) void isrSimdFpException(InterruptFrame* interruptFrame) noexcept;
-__attribute__((interrupt)) void isrVirtualizationException(InterruptFrame* interruptFrame) noexcept;
-__attribute__((interrupt)) void isrControlProtectionException(InterruptFrame* interruptFrame, interrupt_error_code_t errorCode) noexcept;
-}
-
-#endif // !defined(BAD_APPLE_OS_INTERRUPT_HPP_INCLUDED)

targets/_any/kernel/SConscript

@@ -0,0 +1,57 @@
+Import('env')
+
+def _resource(env, res, symbol):
+    def _generate_s(target, source, env):
+        with open(target[0].abspath, 'w') as f:
+            f.write(f'''
+    .section .rodata
+    .global {symbol}
+    .type {symbol} @object
+
+    .section .rodata
+    .global {symbol}_SIZE
+    .type {symbol}_SIZE @object
+{symbol}:
+    .incbin "{res}"
+{symbol}_END:
+{symbol}_SIZE:
+    .int {symbol}_END - {symbol}
+''')
+        with open(target[1].abspath, 'w') as f:
+            f.write(f'''
+#pragma once
+
+#include <stdint.h>
+
+extern "C"
+{{
+extern const uint8_t {symbol}[];
+extern const unsigned {symbol}_SIZE;
+}}
+
+''')
+    env.Command([f'{res}.s', f'{res}.hpp'.replace('src/', 'include/')], res, action = _generate_s)
+env.AddMethod(_resource, 'Resource')
+
+isr_sources = Split('''
+    src/drivers/pic.cpp
+    src/drivers/ps2.cpp
+    src/interrupt.cpp
+''')
+any_target_sources = Split('''
+    src/drivers/pci.cpp
+    src/drivers/usb.cpp
+
+    src/draw.cpp
+    src/memory.cpp
+    src/panic.cpp
+    src/syscall.cpp
+    src/tty.cpp
+    src/resources/lat9-08.psf.s
+''')
+env.Resource(env.File('src/resources/lat9-08.psf').abspath, 'LAT9_08')
+
+env.Append(KERNEL_SOURCES = [env.File(f) for f in any_target_sources])
+env.Append(KERNEL_ISR_SOURCES = [env.File(f) for f in isr_sources])
+
+Return('env')

targets/_any/kernel/include/os/interrupt.hpp

@@ -0,0 +1,149 @@
+
+#pragma once
+
+#if !defined(BAD_APPLE_OS_INTERRUPT_HPP_INCLUDED)
+#define BAD_APPLE_OS_INTERRUPT_HPP_INCLUDED
+
+#include <array>
+#include <bit>
+#include <cstdint>
+
+namespace baos
+{
+#if defined(__x86_64__)
+inline constexpr std::uint8_t INTERRUPT_DIVISION_ERROR = 0x00;
+inline constexpr std::uint8_t INTERRUPT_OVERFLOW = 0x04;
+inline constexpr std::uint8_t INTERRUPT_BOUND_RANGE_EXCEEDED = 0x05;
+inline constexpr std::uint8_t INTERRUPT_INVALID_OPCODE = 0x06;
+inline constexpr std::uint8_t INTERRUPT_DEVICE_NOT_AVAILABLE = 0x07;
+inline constexpr std::uint8_t INTERRUPT_DOUBLE_FAULT = 0x08;
+inline constexpr std::uint8_t INTERRUPT_INVALID_TSS = 0x0A;
+inline constexpr std::uint8_t INTERRUPT_SEGMENT_NOT_PRESENT = 0x0B;
+inline constexpr std::uint8_t INTERRUPT_STACK_SEGMENT_FAULT = 0x0C;
+inline constexpr std::uint8_t INTERRUPT_GENERAL_PROTECTION_FAULT = 0x0D;
+inline constexpr std::uint8_t INTERRUPT_PAGE_FAULT = 0x0E;
+inline constexpr std::uint8_t INTERRUPT_X87_FP_EXCEPTION = 0x10;
+inline constexpr std::uint8_t INTERRUPT_ALIGNMENT_CHECK = 0x11;
+inline constexpr std::uint8_t INTERRUPT_MACHINE_CHECK = 0x12;
+inline constexpr std::uint8_t INTERRUPT_SIMD_FP_EXCEPTION = 0x13;
+inline constexpr std::uint8_t INTERRUPT_VIRTUALIZATION_EXCEPTION = 0x14;
+inline constexpr std::uint8_t INTERRUPT_CONTROL_PROTECTION_EXCEPTION = 0x15;
+
+struct InterruptFrame
+{
+    std::uint64_t ip;
+    std::uint64_t cs;
+    std::uint64_t flags;
+    std::uint64_t sp;
+    std::uint64_t ss;
+};
+using interrupt_error_code_t = std::uint64_t;
+
+enum class InterruptGateType
+{
+    NONE = 0,
+    INTERRUPT_GATE = 0xE,
+    TRAP_GATE = 0xF
+};
+
+enum class InterruptSelectorTable
+{
+    GDT = 0,
+    LDT = 1
+};
+
+struct InterruptDescriptor
+{
+    /*  0 */ unsigned offsetLow : 16 = 0;
+    /* 16 */ unsigned selectorPrivilegeLevel : 2 = 0;
+    /* 18 */ InterruptSelectorTable selectorTable : 1 = InterruptSelectorTable::GDT;
+    /* 19 */ unsigned selectorIndex : 13 = 0;
+    /* 32 */ unsigned interruptStackTable : 3 = 0;
+    /* 35 */ unsigned reserved0_ : 5 = 0;
+    /* 40 */ InterruptGateType gateType : 4 = InterruptGateType::NONE;
+    /* 44 */ unsigned reserved1_ : 1 = 0;
+    /* 45 */ unsigned privilegeLevel : 2 = 0;
+    /* 47 */ bool present : 1 = 0;
+    /* 48 */ unsigned long offsetHigh : 48 = 0;
+    /* 96 */ unsigned reserved2_ : 32 = 0;
+} __attribute__((packed));
+
+class InterruptDescriptorTable
+{
+private:
+    alignas(16) std::array<InterruptDescriptor, 256> mDescriptors;
+public:
+    inline void install() const noexcept;
+
+    template<typename THandler>
+    void setupInterrupt(std::uint8_t index, THandler handler) noexcept
+    {
+        const std::uint64_t offset = std::bit_cast<std::uint64_t>(handler);
+        mDescriptors[index] = InterruptDescriptor{
+            .offsetLow = static_cast<unsigned>(offset & 0xFFFF),
+            .selectorPrivilegeLevel = 0,
+            .selectorIndex = 1, // kernel code
+            .interruptStackTable = 0,
+            .gateType = InterruptGateType::INTERRUPT_GATE,
+            .privilegeLevel = 0,
+            .present = true,
+            .offsetHigh = (offset >> 16)
+        };
+    }
+
+    inline void setupErrorInterrupts() noexcept;
+};
+#endif
+
+using interrupt_handler_t = __attribute__((interrupt)) void(*)(baos::InterruptFrame*);
+using interrupt_handler_with_error_code_t = __attribute__((interrupt)) void(*)(baos::InterruptFrame*, interrupt_error_code_t);
+
+__attribute__((interrupt))
+void isrDivisionError(InterruptFrame* interruptFrame) noexcept;
+
+__attribute__((interrupt)) void isrOverflow(InterruptFrame* interruptFrame) noexcept;
+__attribute__((interrupt)) void isrBoundRangeExceeded(InterruptFrame* interruptFrame) noexcept;
+__attribute__((interrupt)) void isrInvalidOpCode(InterruptFrame* interruptFrame) noexcept;
+__attribute__((interrupt)) void isrDeviceNotAvailable(InterruptFrame* interruptFrame) noexcept;
+__attribute__((interrupt)) void isrDoubleFault(InterruptFrame* interruptFrame) noexcept;
+__attribute__((interrupt)) void isrInvalidTSS(InterruptFrame* interruptFrame, interrupt_error_code_t errorCode) noexcept;
+__attribute__((interrupt)) void isrSegmentNotPresent(InterruptFrame* interruptFrame, interrupt_error_code_t errorCode) noexcept;
+__attribute__((interrupt)) void isrStackSegmentFault(InterruptFrame* interruptFrame, interrupt_error_code_t errorCode) noexcept;
+__attribute__((interrupt)) void isrGeneralProtectionFault(InterruptFrame* interruptFrame, interrupt_error_code_t errorCode) noexcept;
+__attribute__((interrupt)) void isrPageFault(InterruptFrame* interruptFrame, interrupt_error_code_t errorCode) noexcept;
+__attribute__((interrupt)) void isrX87FPException(InterruptFrame* interruptFrame) noexcept;
+__attribute__((interrupt)) void isrAlignmentCheck(InterruptFrame* interruptFrame, interrupt_error_code_t errorCode) noexcept;
+__attribute__((interrupt)) void isrMachineCheck(InterruptFrame* interruptFrame) noexcept;
+__attribute__((interrupt)) void isrSimdFpException(InterruptFrame* interruptFrame) noexcept;
+__attribute__((interrupt)) void isrVirtualizationException(InterruptFrame* interruptFrame) noexcept;
+__attribute__((interrupt)) void isrControlProtectionException(InterruptFrame* interruptFrame, interrupt_error_code_t errorCode) noexcept;
+
+extern "C" void __setIDT(uint16_t limit, const void* base);
+void InterruptDescriptorTable::install() const noexcept
+{
+    __setIDT(sizeof(mDescriptors), &mDescriptors);
+}
+
+void InterruptDescriptorTable::setupErrorInterrupts() noexcept
+{
+    setupInterrupt(INTERRUPT_DIVISION_ERROR, &isrDivisionError);
+    setupInterrupt(INTERRUPT_OVERFLOW, &isrOverflow);
+    setupInterrupt(INTERRUPT_BOUND_RANGE_EXCEEDED, &isrBoundRangeExceeded);
+    setupInterrupt(INTERRUPT_INVALID_OPCODE, &isrInvalidOpCode);
+    setupInterrupt(INTERRUPT_DEVICE_NOT_AVAILABLE, &isrDeviceNotAvailable);
+    setupInterrupt(INTERRUPT_DOUBLE_FAULT, &isrDoubleFault);
+    setupInterrupt(INTERRUPT_INVALID_TSS, &isrInvalidTSS);
+    setupInterrupt(INTERRUPT_SEGMENT_NOT_PRESENT, &isrSegmentNotPresent);
+    setupInterrupt(INTERRUPT_STACK_SEGMENT_FAULT, &isrStackSegmentFault);
+    setupInterrupt(INTERRUPT_GENERAL_PROTECTION_FAULT, &isrGeneralProtectionFault);
+    setupInterrupt(INTERRUPT_PAGE_FAULT, &isrPageFault);
+    setupInterrupt(INTERRUPT_X87_FP_EXCEPTION, &isrX87FPException);
+    setupInterrupt(INTERRUPT_ALIGNMENT_CHECK, &isrAlignmentCheck);
+    setupInterrupt(INTERRUPT_MACHINE_CHECK, &isrMachineCheck);
+    setupInterrupt(INTERRUPT_SIMD_FP_EXCEPTION, &isrSimdFpException);
+    setupInterrupt(INTERRUPT_VIRTUALIZATION_EXCEPTION, &isrVirtualizationException);
+    setupInterrupt(INTERRUPT_CONTROL_PROTECTION_EXCEPTION, &isrControlProtectionException);
+}
+}
+
+#endif // !defined(BAD_APPLE_OS_INTERRUPT_HPP_INCLUDED)

targets/_any/kernel/src/tty.cpp

@@ -6,7 +6,7 @@
 #include "drivers/ps2.hpp"
 #include "libs/psf.hpp"
 #include "os/draw.hpp"
-#include "os/resources/lat9-08.psf.hpp"
+#include "resources/lat9-08.psf.hpp"
 
 namespace tty
 {

targets/_any/src/cstdlib/stdio.cpp

@@ -3,11 +3,16 @@
 
 #include <algorithm>
 #include <stdarg.h>
-#include "os/syscall.hpp"
 #include "os/tty.hpp"
 #include "os/tools/printf_helper.hpp"
 #include "os/tools/ringbuffer.hpp"
 
+#if defined(__baos_kernel_source__)
+#include "os/serial.hpp"
+#else
+#include "os/syscall.hpp"
+#endif
+
 struct __file
 {
 protected:
@@ -111,9 +116,10 @@ extern "C"
 {
 FILE* __stdin = &gStdin;
 
+// TODO: line-buffering
 int putchar(int chr) noexcept
 {
-#if 0
+#if defined(__baos_kernel_source__)
     tty::putChar(static_cast<char>(chr));
     if (chr == '\n')
     {
@@ -125,17 +131,16 @@ int putchar(int chr) noexcept
         serialWrite(PORT_COM1, static_cast<std::uint8_t>(chr));
     }
     return 0;
-#endif
+#else
     char asChar = static_cast<char>(chr);
     baos::doSyscall(baos::Syscall::FILE_WRITE, 0, &asChar, 1);
     return 0;
+#endif
 }
 
 int puts(const char* str) noexcept
 {
-    baos::doSyscall(baos::Syscall::FILE_WRITE, 0, str, std::strlen(str));
-    return 0;
-#if 0
+#if defined(__baos_kernel_source__)
     while (*str)
     {
         putchar(*str);
@@ -143,6 +148,9 @@ int puts(const char* str) noexcept
     }
     putchar('\n');
     return 0;
+#else
+    baos::doSyscall(baos::Syscall::FILE_WRITE, 0, str, std::strlen(str));
+    return 0;
 #endif
 }
 

targets/x86_64/SConscript

@@ -8,9 +8,10 @@ kernel_env['CXX'] = 'x86_64-elf-g++'
 kernel_env['LD'] = 'x86_64-elf-g++'
 
 kernel_env.Append(CFLAGS = ['-ffreestanding'])
+kernel_env.Append(CPPDEFINES = ['__baos_kernel_source__=1'])
 kernel_env.Append(CXXFLAGS = ['-ffreestanding', '-fno-exceptions', '-fno-rtti', '-std=c++20'])
 kernel_env.Append(LINKFLAGS = ['-T', kernel_env.File('linker.ld').abspath, '-ffreestanding', '-nostdlib', '-mcmodel=large', '-mno-red-zone', '-mno-mmx', '-mno-sse', '-mno-sse2'])
-kernel_env.Append(CPPPATH = ['#targets/_any/include', '#bastl/include', 'include', '/usr/include/efi'])
+kernel_env.Append(CPPPATH = ['#targets/_any/include', '#bastl/include', 'include', '/usr/include/efi', '#targets/_any/kernel/include'])
 
 def get_crt_object(name: str) -> str:
     import subprocess

targets/x86_64/src/kernel/boot.s

@@ -61,7 +61,7 @@ __setGDT:
 
 .global __setIDT
 .type __setIDT @function
-// void __setIDT(uint16_t limit [%di], void* base [%rsi])
+// void __setIDT(uint16_t limit [%di], const void* base [%rsi])
 __setIDT:
     movw %di, __idt_storage
     movq %rsi, (__idt_storage + 2)

targets/x86_64/src/kernel/startup.cpp

@@ -32,23 +32,6 @@ constexpr std::uint8_t irqToInterrupt(std::uint8_t irq) noexcept
     }
     return SLAVE_PIC_OFFSET + irq;
 }
-inline constexpr std::uint8_t INTERRUPT_DIVISION_ERROR = 0x00;
-inline constexpr std::uint8_t INTERRUPT_OVERFLOW = 0x04;
-inline constexpr std::uint8_t INTERRUPT_BOUND_RANGE_EXCEEDED = 0x05;
-inline constexpr std::uint8_t INTERRUPT_INVALID_OPCODE = 0x06;
-inline constexpr std::uint8_t INTERRUPT_DEVICE_NOT_AVAILABLE = 0x07;
-inline constexpr std::uint8_t INTERRUPT_DOUBLE_FAULT = 0x08;
-inline constexpr std::uint8_t INTERRUPT_INVALID_TSS = 0x0A;
-inline constexpr std::uint8_t INTERRUPT_SEGMENT_NOT_PRESENT = 0x0B;
-inline constexpr std::uint8_t INTERRUPT_STACK_SEGMENT_FAULT = 0x0C;
-inline constexpr std::uint8_t INTERRUPT_GENERAL_PROTECTION_FAULT = 0x0D;
-inline constexpr std::uint8_t INTERRUPT_PAGE_FAULT = 0x0E;
-inline constexpr std::uint8_t INTERRUPT_X87_FP_EXCEPTION = 0x10;
-inline constexpr std::uint8_t INTERRUPT_ALIGNMENT_CHECK = 0x11;
-inline constexpr std::uint8_t INTERRUPT_MACHINE_CHECK = 0x12;
-inline constexpr std::uint8_t INTERRUPT_SIMD_FP_EXCEPTION = 0x13;
-inline constexpr std::uint8_t INTERRUPT_VIRTUALIZATION_EXCEPTION = 0x14;
-inline constexpr std::uint8_t INTERRUPT_CONTROL_PROTECTION_EXCEPTION = 0x15;
 inline constexpr std::uint8_t INTERRUPT_KEYBOARD = irqToInterrupt(1);
 
 TaskStateSegment tss alignas(16);
@@ -63,8 +46,7 @@ constinit std::array GDT alignas(16) = {
     SEGMENT_NULL  // TSS higher
 };
 
-constinit std::array<InterruptDescriptor, 256> IDT alignas(16);
-
+constinit baos::InterruptDescriptorTable gInterruptDescriptorTable;
 
 inline baos::MemoryType mapEfiMemoryType(UINT32 type) noexcept
 {
@@ -145,27 +127,10 @@ void initGlobals()
 }
 
 extern "C" void __setGDT(uint16_t limit, void* base);
-extern "C" void __setIDT(uint16_t limit, void* base);
 extern "C" void __reloadSegments(uint64_t code, uint64_t data);
 extern "C" void __flushTSS(uint16_t segment);
 extern "C" void __enterUsermode(uint16_t codeSegment, uint16_t dataSegment, void* rsp, void (*function)(), void* stackPtr);
 
-template<typename THandler>
-void setupInterrupt(std::uint8_t index, THandler handler) noexcept
-{
-    const std::uint64_t offset = std::bit_cast<std::uint64_t>(handler);
-    IDT[index] = InterruptDescriptor{
-        .offsetLow = static_cast<unsigned>(offset & 0xFFFF),
-        .selectorPrivilegeLevel = 0,
-        .selectorIndex = 1, // kernel code
-        .interruptStackTable = 0,
-        .gateType = InterruptGateType::INTERRUPT_GATE,
-        .privilegeLevel = 0,
-        .present = true,
-        .offsetHigh = (offset >> 16)
-    };
-}
-
 void initializePCIDevice(const baos::pci::Header& header) noexcept
 {
     using namespace baos;
@@ -192,28 +157,12 @@ void kernel_main()
 {
     using namespace baos;
 
-    setupInterrupt(INTERRUPT_DIVISION_ERROR, &baos::isrDivisionError);
-    setupInterrupt(INTERRUPT_OVERFLOW, &baos::isrOverflow);
-    setupInterrupt(INTERRUPT_BOUND_RANGE_EXCEEDED, &baos::isrBoundRangeExceeded);
-    setupInterrupt(INTERRUPT_INVALID_OPCODE, &baos::isrInvalidOpCode);
-    setupInterrupt(INTERRUPT_DEVICE_NOT_AVAILABLE, &baos::isrDeviceNotAvailable);
-    setupInterrupt(INTERRUPT_DOUBLE_FAULT, &baos::isrDoubleFault);
-    setupInterrupt(INTERRUPT_INVALID_TSS, &baos::isrInvalidTSS);
-    setupInterrupt(INTERRUPT_SEGMENT_NOT_PRESENT, &baos::isrSegmentNotPresent);
-    setupInterrupt(INTERRUPT_STACK_SEGMENT_FAULT, &baos::isrStackSegmentFault);
-    setupInterrupt(INTERRUPT_GENERAL_PROTECTION_FAULT, &baos::isrGeneralProtectionFault);
-    setupInterrupt(INTERRUPT_PAGE_FAULT, &baos::isrPageFault);
-    setupInterrupt(INTERRUPT_X87_FP_EXCEPTION, &baos::isrX87FPException);
-    setupInterrupt(INTERRUPT_ALIGNMENT_CHECK, &baos::isrAlignmentCheck);
-    setupInterrupt(INTERRUPT_MACHINE_CHECK, &baos::isrMachineCheck);
-    setupInterrupt(INTERRUPT_SIMD_FP_EXCEPTION, &baos::isrSimdFpException);
-    setupInterrupt(INTERRUPT_VIRTUALIZATION_EXCEPTION, &baos::isrVirtualizationException);
-    setupInterrupt(INTERRUPT_CONTROL_PROTECTION_EXCEPTION, &baos::isrControlProtectionException);
-    setupInterrupt(INTERRUPT_KEYBOARD, &ps2::isrKeyboard);
+    gInterruptDescriptorTable.setupErrorInterrupts();
+    gInterruptDescriptorTable.setupInterrupt(INTERRUPT_KEYBOARD, &ps2::isrKeyboard);
 
     makeTSSSegment(&tss, &GDT[5]);
     __setGDT(sizeof(GDT), &GDT);
-    __setIDT(sizeof(IDT), &IDT);
+    gInterruptDescriptorTable.install();
     __reloadSegments(SEGIDX_KERNEL_CODE, SEGIDX_KERNEL_DATA);
     __flushTSS(SEGIDX_TSS);
 

targets/x86_64/src/kernel/x86_64.hpp

@@ -171,35 +171,6 @@ inline constexpr const SegmentDescriptor SEGMENT_USER_DATA = {
 
 // --- Interrupts --- //
 
-enum class InterruptGateType
-{
-    NONE = 0,
-    INTERRUPT_GATE = 0xE,
-    TRAP_GATE = 0xF
-};
-
-enum class InterruptSelectorTable
-{
-    GDT = 0,
-    LDT = 1
-};
-
-struct InterruptDescriptor
-{
-    /*  0 */ unsigned offsetLow : 16 = 0;
-    /* 16 */ unsigned selectorPrivilegeLevel : 2 = 0;
-    /* 18 */ InterruptSelectorTable selectorTable : 1 = InterruptSelectorTable::GDT;
-    /* 19 */ unsigned selectorIndex : 13 = 0;
-    /* 32 */ unsigned interruptStackTable : 3 = 0;
-    /* 35 */ unsigned reserved0_ : 5 = 0;
-    /* 40 */ InterruptGateType gateType : 4 = InterruptGateType::NONE;
-    /* 44 */ unsigned reserved1_ : 1 = 0;
-    /* 45 */ unsigned privilegeLevel : 2 = 0;
-    /* 47 */ bool present : 1 = 0;
-    /* 48 */ unsigned long offsetHigh : 48 = 0;
-    /* 96 */ unsigned reserved2_ : 32 = 0;
-} __attribute__((packed));
-
 struct TaskStateSegment
 {
     /*   0 */ std::uint32_t reserved0 = 0;