x86_64/cpu: move gdt initialization code

1 files changed, 2 insertions, 111 deletions

diff --git a/arch/x86_64/kapi/system.cpp b/arch/x86_64/kapi/system.cpp
index ca4418e..ffb6a46 100644
--- a/arch/x86_64/kapi/system.cpp
+++ b/arch/x86_64/kapi/system.cpp
@@ -1,122 +1,13 @@
 #include "kapi/system.hpp"
 
-#include "arch/cpu/global_descriptor_table.hpp"
-#include "arch/cpu/segment_descriptor.hpp"
-#include "arch/cpu/task_state_segment.hpp"
-
-#include <kstd/print>
-
-#include <bit>
-#include <cstdint>
+#include "arch/cpu/initialization.hpp"
 
 namespace kapi::system
 {
 
-  namespace
-  {
-    constexpr auto gdt_null_descriptor = arch::cpu::segment_descriptor{};
-
-    constexpr auto gdt_kernel_code_descriptor = arch::cpu::segment_descriptor{
-      .limit_low = 0xffff,
-      .base_low = 0,
-      .accessed = false,
-      .read_write = false,
-      .direction_or_conforming = false,
-      .executable = true,
-      .type = arch::cpu::segment_type::code_or_data,
-      .privilege_level = 0,
-      .present = true,
-      .limit_high = 0xf,
-      .long_mode = true,
-      .protected_mode = false,
-      .granularity = arch::cpu::segment_granularity::page,
-      .base_high = 0,
-    };
-
-    constexpr auto gdt_kernel_data_descriptor = arch::cpu::segment_descriptor{
-      .limit_low = 0xffff,
-      .base_low = 0,
-      .accessed = false,
-      .read_write = true,
-      .direction_or_conforming = false,
-      .executable = false,
-      .type = arch::cpu::segment_type::code_or_data,
-      .privilege_level = 0,
-      .present = true,
-      .limit_high = 0xf,
-      .long_mode = false,
-      .protected_mode = true,
-      .granularity = arch::cpu::segment_granularity::page,
-      .base_high = 0,
-    };
-
-    constexpr auto gdt_user_code_descriptor = arch::cpu::segment_descriptor{
-      .limit_low = 0xffff,
-      .base_low = 0,
-      .accessed = false,
-      .read_write = false,
-      .direction_or_conforming = false,
-      .executable = true,
-      .type = arch::cpu::segment_type::code_or_data,
-      .privilege_level = 3,
-      .present = true,
-      .limit_high = 0xf,
-      .long_mode = true,
-      .protected_mode = false,
-      .granularity = arch::cpu::segment_granularity::page,
-      .base_high = 0,
-    };
-
-    constexpr auto gdt_user_data_descriptor = arch::cpu::segment_descriptor{
-      .limit_low = 0xffff,
-      .base_low = 0,
-      .accessed = false,
-      .read_write = true,
-      .direction_or_conforming = false,
-      .executable = false,
-      .type = arch::cpu::segment_type::code_or_data,
-      .privilege_level = 3,
-      .present = true,
-      .limit_high = 0xf,
-      .long_mode = false,
-      .protected_mode = false,
-      .granularity = arch::cpu::segment_granularity::page,
-      .base_high = 0,
-    };
-  }  // namespace
-
   auto memory_initialized() -> void
   {
-    auto static tss = arch::cpu::task_state_segment{};
-    auto static tss_descriptor = arch::cpu::system_segment_descriptor{
-      {
-       .limit_low = (sizeof(tss) - 1) & 0xffff,                     // NOLINT(readability-magic-numbers)
-        .base_low = std::bit_cast<std::uintptr_t>(&tss) & 0xffffff,  // NOLINT(readability-magic-numbers)
-        .accessed = false,
-       .read_write = false,
-       .direction_or_conforming = false,
-       .executable = false,
-       .type = arch::cpu::segment_type::system,
-       .privilege_level = 0,
-       .present = true,
-       .limit_high = ((sizeof(tss) - 1) >> 16) & 0xf,  // NOLINT(readability-magic-numbers)
-        .long_mode = false,
-       .protected_mode = false,
-       .granularity = arch::cpu::segment_granularity::byte,
-       .base_high = (std::bit_cast<std::uintptr_t>(&tss) >> 24) & 0xff,  // NOLINT(readability-magic-numbers)
-      },
-      (std::bit_cast<std::uintptr_t>(&tss) >> 32) & 0xffff'ffff, // NOLINT(readability-magic-numbers)
-    };
-
-    auto static gdt = arch::cpu::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] TODO: initialize Interrupt Descriptor Table.");
+    arch::cpu::initialize_descriptors();
   }
 
 }  // namespace kapi::system
\ No newline at end of file