163 lines
No EOL
3.7 KiB
C
163 lines
No EOL
3.7 KiB
C
#ifndef PLAND_SYSCALL_H
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#define PLAND_SYSCALL_H
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#include <stdint.h>
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#include <stdbool.h>
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typedef uint32_t _file_handle_t;
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typedef uint32_t _task_handle_t;
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typedef uint32_t _drive_number_t;
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typedef uint32_t _pages_t;
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typedef enum {
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_KEY_BACKSPACE = '\b',
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_KEY_RETURN = '\n',
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//etc.
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_KEY_LSHIFT = 0x00000100,
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_KEY_RSHIFT = 0x00000200,
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_KEY_CAPS = 0x00000400,
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_KEY_INSERT = 0x00000800,
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_KEY_NUM = 0x00001000,
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_KEY_SCROLL = 0x00002000,
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_KEY_LALT = 0x00004000,
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_KEY_RALT = 0x00008000,
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_KEY_LCTRL = 0x00010000,
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_KEY_RCTRL = 0x00020000,
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_KEY_LMETA = 0x00040000,
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_KEY_RMETA = 0x00080000,
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_KEY_SHIFT = 0x00000300,
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_KEY_SCAPS = 0x00000700,
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_KEY_ALT = 0x0000c000,
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_KEY_CTRL = 0x00030000,
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_KEY_META = 0x000c0000,
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} _key_code_t;
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enum _scn {
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_SCN_OPEN_FILE,
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_SCN_CLOSE_FILE,
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_SCN_FILE_READ,
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_SCN_FILE_SIZE,
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_SCN_START_TASK,
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_SCN_LOG_STRING,
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_SCN_GET_KEY,
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_SCN_ALLOCATE_RAM,
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_SCN_MEMORY_INFO
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};
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static inline uint32_t _sc0(enum _scn eax) {
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volatile uint32_t out;
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asm (
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"int $0x30"
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: "=a" (out) : "a" (eax) : "ecx", "edx");
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return out;
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}
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static inline uint32_t _sc1(enum _scn eax, uint32_t ebx) {
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volatile uint32_t out;
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asm (
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"int $0x30"
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: "=a" (out) : "a" (eax), "b" (ebx) : "ecx", "edx");
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return out;
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}
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static inline uint32_t _sc2(enum _scn eax, uint32_t ebx, uint32_t ecx) {
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volatile uint32_t out;
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asm (
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"int $0x30"
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: "=a" (out) : "a" (eax), "b" (ebx), "c" (ecx) : "edx");
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return out;
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}
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static inline uint32_t _sc3(enum _scn eax, uint32_t ebx, uint32_t ecx, uint32_t edx) {
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volatile uint32_t out;
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asm (
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"int $0x30"
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: "=a" (out) : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx));
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return out;
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}
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static inline uint32_t _sc4(enum _scn eax, uint32_t ebx, uint32_t ecx, uint32_t edx, uint32_t esi) {
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volatile uint32_t out;
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asm (
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"int $0x30"
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: "=a" (out) : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi));
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return out;
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}
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static inline uint32_t _sc5(enum _scn eax, uint32_t ebx, uint32_t ecx, uint32_t edx, uint32_t esi, uint32_t edi) {
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volatile uint32_t out;
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asm (
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"int $0x30"
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: "=a" (out) : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));
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return out;
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}
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static inline void _yield_task() {
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asm (
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"int $0x39"
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);
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}
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__attribute__ ((noreturn))
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static inline void _exit_task() {
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asm (
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"int $0x38"
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);
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__builtin_unreachable();
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}
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static inline _file_handle_t _open_file(_drive_number_t drive_number, const char *path) {
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return _sc2(_SCN_OPEN_FILE, drive_number, (uint32_t)path);
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}
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static inline void _close_file(_file_handle_t handle) {
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_sc1(_SCN_CLOSE_FILE, handle);
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}
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static inline uint32_t _file_read(_file_handle_t handle, uint32_t file_offset, uint32_t count, void *buffer) {
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return _sc4(_SCN_FILE_READ, handle, file_offset, count, (uint32_t)buffer);
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}
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static inline uint32_t _file_size(_file_handle_t handle) {
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return _sc1(_SCN_FILE_SIZE, handle);
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}
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static inline bool _start_task(_drive_number_t drive_number, const char *path) {
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return (bool)_sc2(_SCN_START_TASK, drive_number, (uint32_t)path);
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}
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static inline void _log_string(const char *sz) {
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_sc1(_SCN_LOG_STRING, (uint32_t)sz);
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}
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static inline _key_code_t _get_key() {
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return _sc0(_SCN_GET_KEY);
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}
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static inline void *_allocate_ram(_pages_t pages) {
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return (void *)_sc1(_SCN_ALLOCATE_RAM, pages);
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}
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static inline _pages_t _kernel_dynamic_area_size() {
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return _sc1(_SCN_MEMORY_INFO, 0x0);
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}
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static inline _pages_t _kernel_dynamic_area_left() {
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return _sc1(_SCN_MEMORY_INFO, 0x1);
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}
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static inline _pages_t _total_userspace_size() {
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return _sc1(_SCN_MEMORY_INFO, 0x2);
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}
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static inline _pages_t _total_userspace_left() {
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return _sc1(_SCN_MEMORY_INFO, 0x3);
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}
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static inline _pages_t _this_process_memory_left() {
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return _sc1(_SCN_MEMORY_INFO, 0x4);
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}
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#endif |