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| author | Felix Morgner <felix.morgner@ost.ch> | 2025-07-22 20:48:11 +0000 |
|---|---|---|
| committer | Felix Morgner <felix.morgner@ost.ch> | 2025-07-22 20:51:52 +0000 |
| commit | ce8683e63fc9ef59e1800927afb1753507a42ef6 (patch) | |
| tree | 5bd32b1a291e81615695abe96bf093ad9a8e1692 /arch/x86_64/src/boot | |
| parent | eb22cdcad4c27527a63a6e457e80c752f76821c6 (diff) | |
| download | teachos-ce8683e63fc9ef59e1800927afb1753507a42ef6.tar.xz teachos-ce8683e63fc9ef59e1800927afb1753507a42ef6.zip | |
x86_64: extract constants from bootstrap code
Diffstat (limited to 'arch/x86_64/src/boot')
| -rw-r--r-- | arch/x86_64/src/boot/boot.S (renamed from arch/x86_64/src/boot/boot.s) | 19 |
1 files changed, 5 insertions, 14 deletions
diff --git a/arch/x86_64/src/boot/boot.s b/arch/x86_64/src/boot/boot.S index 7a46795..d65c865 100644 --- a/arch/x86_64/src/boot/boot.s +++ b/arch/x86_64/src/boot/boot.S @@ -1,3 +1,5 @@ +#include "x86_64/boot/boot.hpp" + /** * @brief Uninitialized data for the bootstrapping process. */ @@ -33,18 +35,12 @@ stack_top: * @brief A basic GDT for long mode. */ global_descriptor_table: -.set GDT_ACCESSED, 40 -.set GDT_READ_WRITE, 41 -.set GDT_EXECUTABLE, 43 -.set GDT_DESCRIPTOR_TYPE, 44 -.set GDT_PRESENT, 47 -.set GDT_LONG_MODE, 53 global_descriptor_table_null = . - global_descriptor_table .quad 0 global_descriptor_table_code = . - global_descriptor_table -.quad (1 << GDT_ACCESSED) | (1 << GDT_READ_WRITE) | (1 << GDT_EXECUTABLE) | (1 << GDT_DESCRIPTOR_TYPE) | (1 << GDT_PRESENT) | (1 << GDT_LONG_MODE) +.quad GDT_ACCESSED | GDT_READ_WRITE | GDT_EXECUTABLE | GDT_DESCRIPTOR_TYPE | GDT_PRESENT | GDT_LONG_MODE global_descriptor_table_data = . - global_descriptor_table -.quad (1 << GDT_ACCESSED) | (1 << GDT_READ_WRITE) | (1 << GDT_DESCRIPTOR_TYPE) | (1 << GDT_PRESENT) +.quad GDT_ACCESSED | GDT_READ_WRITE | GDT_DESCRIPTOR_TYPE | GDT_PRESENT global_descriptor_table_end: message_prefix_panic: .string "Panic: " @@ -110,7 +106,6 @@ vga_buffer_pointer: .quad 0xb8000 * @param %ebx The Multiboot 2 information pointer. * @return void This function does not return. */ -.global _start _start: call 0f 0: @@ -145,7 +140,6 @@ _start: * * @return This function never returns. */ -.global halt _halt: function_start @@ -227,7 +221,6 @@ _panic: _assert_loaded_by_multiboot2_loader: pie_function_start - .set MULTIBOOT2_MAGIC, 0x36d76289 cmp $MULTIBOOT2_MAGIC, %eax je 1f lea (message_not_loaded_by_multiboot2 - 0b)(%esi), %eax @@ -316,8 +309,6 @@ _prepare_page_maps: pie_function_start push %ebx - .set HUGE_PAGES_TO_MAP, 16 - /* Map the P4 table recursively */ lea (page_map_level_4 - 0b)(%esi), %eax mov %eax, %ebx @@ -362,7 +353,7 @@ _prepare_page_maps: * set up for use. * * @return void - */For + */ _enable_paging: pie_function_start |