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‎headers/command_processor.h‎

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#ifndef APOLLO_COMMAND_PROCESSOR_H
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#define APOLLO_COMMAND_PROCESSOR_H
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#include <stdint.h>
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#include <stdbool.h>
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void command_processor_initialize(void);
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void command_processor_handle_input(uint8_t scan_code);
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bool command_processor_is_initialized(void);
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uint32_t command_processor_get_commands_executed(void);
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const char* command_processor_get_current_user(void);
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// Available commands:
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// File System: ls, dir, cd, pwd, mkdir, rmdir, rm, cp, mv, cat, touch, find, tree, grep
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// System Info: sysinfo, meminfo, df, ps, whoami, date, uptime
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// Utilities: calc, echo, history, clear, edit, palette
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// Control: reboot, shutdown, help
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#endif

‎headers/config.h‎

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#ifndef APOLLO_CONFIG_H
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#define APOLLO_CONFIG_H
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#define APOLLO_VERSION_MAJOR 1
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#define APOLLO_VERSION_MINOR 0
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#define APOLLO_VERSION_PATCH 0
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#define APOLLO_VERSION_STRING "1.0.0"
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#define APOLLO_ARCH_X86_64 1
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#define APOLLO_ARCH_STRING "x86_64"
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#define APOLLO_PAGE_SIZE 4096
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#define APOLLO_KERNEL_HEAP_SIZE (16 * 1024 * 1024) // 16MB
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#define APOLLO_KERNEL_STACK_SIZE (64 * 1024) // 64KB
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#define APOLLO_MEMORY_ALIGNMENT 8
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#define APOLLO_VGA_WIDTH 80
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#define APOLLO_VGA_HEIGHT 25
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#define APOLLO_VGA_COLORS 16
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#define APOLLO_KEYBOARD_BUFFER_SIZE 256
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#define APOLLO_COMMAND_MAX_LENGTH 256
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#define APOLLO_COMMAND_HISTORY_SIZE 32
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#define APOLLO_MAX_COMMAND_ARGS 16
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#define APOLLO_MULTIBOOT2_MAGIC 0xe85250d6
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#define APOLLO_KERNEL_LOAD_ADDRESS 0x100000 // 1MB
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#ifdef DEBUG
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#define APOLLO_DEBUG_ENABLED 1
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#define APOLLO_SERIAL_DEBUG 1
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#else
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#define APOLLO_DEBUG_ENABLED 0
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#define APOLLO_SERIAL_DEBUG 0
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#endif
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#define APOLLO_FEATURE_MEMORY_MANAGER 1
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#define APOLLO_FEATURE_COMMAND_SHELL 1
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#define APOLLO_FEATURE_VGA_GRAPHICS 1
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#define APOLLO_FEATURE_PS2_KEYBOARD 1
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#define APOLLO_FEATURE_RTC_CLOCK 1
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#define APOLLO_COMPILER_NAME "GCC"
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#define APOLLO_BUILD_DATE __DATE__
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#define APOLLO_BUILD_TIME __TIME__
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#define APOLLO_MAX_FILENAME_LENGTH 255
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#define APOLLO_MAX_PATH_LENGTH 1024
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#define APOLLO_MAX_PROCESSES 32
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#define APOLLO_MAX_THREADS 128
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#define APOLLO_ASSERT_ENABLED 1
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#define APOLLO_ERROR_CHECKING 1
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#define APOLLO_CPU_VENDOR_INTEL 0x756e6547 // "Genu"
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#define APOLLO_CPU_VENDOR_AMD 0x68747541 // "Auth"
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#define APOLLO_TIMER_FREQUENCY 1000 // 1000 Hz
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#define APOLLO_SCHEDULER_QUANTUM 10 // 10ms
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#define APOLLO_VGA_CTRL_PORT 0x3D4
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#define APOLLO_VGA_DATA_PORT 0x3D5
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#define APOLLO_KB_DATA_PORT 0x60
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#define APOLLO_KB_STATUS_PORT 0x64
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#define APOLLO_CMOS_ADDRESS_PORT 0x70
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#define APOLLO_CMOS_DATA_PORT 0x71
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#define APOLLO_HEAP_MAGIC 0xDEADBEEF
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#define APOLLO_STACK_MAGIC 0xCAFEBABE
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#define APOLLO_KERNEL_MAGIC 0x41504F4C // "APOL"
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#define APOLLO_DEFAULT_FG_COLOR 7 // Light gray
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#define APOLLO_DEFAULT_BG_COLOR 0 // Black
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#define APOLLO_LOGO_COLOR 14 // Yellow
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#define APOLLO_ACCENT_COLOR 3 // Orange
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#define APOLLO_KB(x) ((x) * 1024)
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#define APOLLO_MB(x) ((x) * 1024 * 1024)
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#define APOLLO_GB(x) ((x) * 1024ULL * 1024 * 1024)
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#define APOLLO_STRINGIFY(x) #x
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#define APOLLO_TOSTRING(x) APOLLO_STRINGIFY(x)
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#if APOLLO_DEBUG_ENABLED
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#define APOLLO_DEBUG_PRINT(fmt, ...) debug_printf(fmt, ##__VA_ARGS__)
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#else
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#define APOLLO_DEBUG_PRINT(fmt, ...) do {} while(0)
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#endif
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#define APOLLO_STATIC_ASSERT(cond, msg) \
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typedef char apollo_static_assert_##msg[(cond) ? 1 : -1]
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APOLLO_STATIC_ASSERT(APOLLO_PAGE_SIZE == 4096, page_size_must_be_4k);
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APOLLO_STATIC_ASSERT(APOLLO_MEMORY_ALIGNMENT >= 8, alignment_must_be_at_least_8);
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APOLLO_STATIC_ASSERT(APOLLO_KEYBOARD_BUFFER_SIZE > 0, keyboard_buffer_must_be_positive);
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#endif

‎headers/filesystem.h‎

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#ifndef APOLLO_FILESYSTEM_H
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#define APOLLO_FILESYSTEM_H
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#include <stdint.h>
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#include <stdbool.h>
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#define FS_MAX_FILENAME_LENGTH 64
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#define FS_MAX_PATH_LENGTH 256
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#define FS_MAX_FILE_SIZE (64 * 1024) // 64KB max file size
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#define FS_MAX_FILES 256
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#define FS_MAX_DIRECTORIES 64
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#define FS_BLOCK_SIZE 512
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#define FS_MAX_BLOCKS 1024
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typedef enum {
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FS_TYPE_FILE = 1,
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FS_TYPE_DIRECTORY = 2
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} fs_file_type_t;
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typedef enum {
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FS_PERM_READ = 0x01,
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FS_PERM_WRITE = 0x02,
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FS_PERM_EXECUTE = 0x04
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} fs_permissions_t;
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typedef struct {
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char name[FS_MAX_FILENAME_LENGTH];
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fs_file_type_t type;
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uint32_t size;
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uint32_t created_time;
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uint32_t modified_time;
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uint8_t permissions;
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uint32_t parent_id;
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uint32_t data_block;
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bool is_valid;
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} fs_file_info_t;
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typedef struct {
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char name[FS_MAX_FILENAME_LENGTH];
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fs_file_type_t type;
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uint32_t size;
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uint8_t permissions;
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} fs_dir_entry_t;
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typedef struct {
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uint32_t file_id;
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uint32_t position;
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bool is_open;
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bool write_mode;
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} fs_file_handle_t;
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void filesystem_initialize(void);
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bool filesystem_create_directory(const char* path);
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bool filesystem_remove_directory(const char* path);
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bool filesystem_change_directory(const char* path);
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bool filesystem_get_current_directory(char* buffer, uint32_t buffer_size);
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uint32_t filesystem_list_directory(const char* path, fs_dir_entry_t* entries, uint32_t max_entries);
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bool filesystem_create_file(const char* path);
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bool filesystem_delete_file(const char* path);
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bool filesystem_copy_file(const char* source, const char* destination);
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bool filesystem_move_file(const char* source, const char* destination);
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bool filesystem_file_exists(const char* path);
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bool filesystem_get_file_info(const char* path, fs_file_info_t* info);
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fs_file_handle_t* filesystem_open_file(const char* path, bool write_mode);
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void filesystem_close_file(fs_file_handle_t* handle);
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uint32_t filesystem_read_file(fs_file_handle_t* handle, void* buffer, uint32_t size);
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uint32_t filesystem_write_file(fs_file_handle_t* handle, const void* buffer, uint32_t size);
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bool filesystem_seek_file(fs_file_handle_t* handle, uint32_t position);
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bool filesystem_resolve_path(const char* path, char* resolved_path, uint32_t buffer_size);
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uint32_t filesystem_get_free_space(void);
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uint32_t filesystem_get_used_space(void);
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void filesystem_format(void);
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typedef struct {
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uint32_t total_files;
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uint32_t total_directories;
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uint32_t free_blocks;
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uint32_t used_blocks;
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uint32_t total_space;
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uint32_t free_space;
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} fs_stats_t;
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bool filesystem_get_stats(fs_stats_t* stats);
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#endif

‎headers/heap_allocator.h‎

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#ifndef APOLLO_HEAP_ALLOCATOR_H
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#define APOLLO_HEAP_ALLOCATOR_H
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#include <stddef.h>
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#include <stdint.h>
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void heap_allocator_initialize(void);
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void* apollo_allocate_memory(size_t size);
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void apollo_free_memory(void* ptr);
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void* apollo_allocate_zeroed_memory(size_t count, size_t element_size);
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void* apollo_reallocate_memory(void* ptr, size_t new_size);
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size_t heap_allocator_get_used_memory(void);
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size_t heap_allocator_get_free_memory(void);
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size_t heap_allocator_get_total_memory(void);
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void heap_allocator_dump_info(void);
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#endif

‎headers/input_manager.h‎

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#ifndef APOLLO_INPUT_MANAGER_H
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#define APOLLO_INPUT_MANAGER_H
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#include <stdint.h>
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#include <stdbool.h>
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#define SCANCODE_UP_ARROW 0x48
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#define SCANCODE_DOWN_ARROW 0x50
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#define SCANCODE_LEFT_ARROW 0x4B
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#define SCANCODE_RIGHT_ARROW 0x4D
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#define SCANCODE_ESCAPE 0x01
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#define SCANCODE_ENTER 0x1C
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#define SCANCODE_BACKSPACE 0x0E
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#define SCANCODE_TAB 0x0F
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#define SCANCODE_SPACE 0x39
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#define SCANCODE_DELETE 0x53
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#define SCANCODE_INSERT 0x52
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#define SCANCODE_HOME 0x47
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#define SCANCODE_END 0x4F
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#define SCANCODE_PAGE_UP 0x49
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#define SCANCODE_PAGE_DOWN 0x51
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#define SCANCODE_F1 0xF1
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#define SCANCODE_F2 0xF2
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#define SCANCODE_F3 0xF3
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#define SCANCODE_F4 0xF4
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#define SCANCODE_F5 0xF5
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#define SCANCODE_F6 0xF6
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#define SCANCODE_F7 0xF7
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#define SCANCODE_F8 0xF8
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#define SCANCODE_F9 0xF9
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#define SCANCODE_F10 0xFA
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#define SCANCODE_F11 0xFB
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#define SCANCODE_F12 0xFC
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void input_manager_initialize(void);
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bool input_manager_has_input(void);
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uint8_t input_manager_read_scancode(void);
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char input_manager_scancode_to_ascii(uint8_t scan_code);
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bool input_manager_is_shift_pressed(void);
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bool input_manager_is_ctrl_pressed(void);
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bool input_manager_is_alt_pressed(void);
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bool input_manager_is_caps_lock_on(void);
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bool input_manager_is_num_lock_on(void);
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bool input_manager_is_scroll_lock_on(void);
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uint8_t input_manager_get_last_scancode(void);
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#endif

‎headers/process_manager.h‎

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#ifndef APOLLO_PROCESS_MANAGER_H
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#define APOLLO_PROCESS_MANAGER_H
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#include <stdint.h>
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#include <stdbool.h>
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typedef enum {
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PROCESS_STATE_RUNNING = 0,
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PROCESS_STATE_READY = 1,
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PROCESS_STATE_BLOCKED = 2,
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PROCESS_STATE_TERMINATED = 3
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} process_state_t;
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typedef enum {
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PROCESS_TYPE_KERNEL = 0,
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PROCESS_TYPE_SYSTEM = 1,
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PROCESS_TYPE_USER = 2
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} process_type_t;
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typedef struct {
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uint32_t pid;
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char name[64];
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process_state_t state;
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process_type_t type;
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uint32_t priority;
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uint32_t cpu_time;
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uint32_t memory_usage;
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uint32_t parent_pid;
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uint32_t start_time;
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void* entry_point;
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bool is_active;
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} process_t;
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typedef struct {
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uint32_t total_processes;
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uint32_t running_processes;
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uint32_t blocked_processes;
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uint32_t total_cpu_time;
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uint32_t context_switches;
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} process_stats_t;
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void process_manager_initialize(void);
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uint32_t process_create(const char* name, process_type_t type, void* entry_point);
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bool process_terminate(uint32_t pid);
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bool process_suspend(uint32_t pid);
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bool process_resume(uint32_t pid);
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bool process_get_info(uint32_t pid, process_t* info);
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uint32_t process_list(process_t* processes, uint32_t max_count);
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bool process_get_stats(process_stats_t* stats);
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uint32_t process_get_current_pid(void);
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void process_yield(void);
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void process_scheduler_tick(void);
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void process_update_memory_usage(uint32_t pid, uint32_t memory_bytes);
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void process_update_cpu_time(uint32_t pid, uint32_t time_slice);
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#endif

‎headers/terminal.h‎

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#ifndef APOLLO_TERMINAL_H
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#define APOLLO_TERMINAL_H
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#include <stdint.h>
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#include <stddef.h>
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typedef enum {
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VGA_COLOR_BLACK = 0,
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VGA_COLOR_BLUE = 1,
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VGA_COLOR_GREEN = 2,
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VGA_COLOR_CYAN = 3,
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VGA_COLOR_RED = 4,
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VGA_COLOR_MAGENTA = 5,
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VGA_COLOR_BROWN = 6,
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VGA_COLOR_LIGHT_GREY = 7,
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VGA_COLOR_DARK_GREY = 8,
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VGA_COLOR_LIGHT_BLUE = 9,
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VGA_COLOR_LIGHT_GREEN = 10,
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VGA_COLOR_LIGHT_CYAN = 11,
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VGA_COLOR_LIGHT_RED = 12,
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VGA_COLOR_PINK = 13,
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VGA_COLOR_YELLOW = 14,
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VGA_COLOR_WHITE = 15,
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} vga_color_t;
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void terminal_initialize(void);
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void terminal_clear(void);
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void terminal_write_char(char c);
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void terminal_write_string(const char* str);
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void terminal_set_color(uint8_t foreground, uint8_t background);
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void terminal_set_custom_color(uint8_t index, uint8_t red, uint8_t green, uint8_t blue);
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void terminal_enable_cursor(void);
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void terminal_disable_cursor(void);
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void terminal_backspace(void);
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void terminal_handle_scroll_input(uint8_t scan_code);
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void terminal_show_scroll_status(void);
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void terminal_write_uint(uint32_t value);
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void terminal_write_int(int32_t value);
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void terminal_write_hex(uintptr_t value);
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#endif

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