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#ifndef PLAND_SYSCALL_H
#define PLAND_SYSCALL_H
#include <stdint.h>
typedef uint32_t _file_handle_t;
typedef uint32_t _task_handle_t;
typedef uint32_t _drive_number_t;
typedef enum {
_KEY_BACKSPACE = '\b',
_KEY_RETURN = '\n',
//etc.
_KEY_LSHIFT = 0x00000100,
_KEY_RSHIFT = 0x00000200,
_KEY_CAPS = 0x00000400,
_KEY_INSERT = 0x00000800,
_KEY_NUM = 0x00001000,
_KEY_SCROLL = 0x00002000,
_KEY_LALT = 0x00004000,
_KEY_RALT = 0x00008000,
_KEY_LCTRL = 0x00010000,
_KEY_RCTRL = 0x00020000,
_KEY_LMETA = 0x00040000,
_KEY_RMETA = 0x00080000,
_KEY_SHIFT = 0x00000300,
_KEY_SCAPS = 0x00000700,
_KEY_ALT = 0x0000c000,
_KEY_CTRL = 0x00030000,
_KEY_META = 0x000c0000,
} _key_code_t;
enum _scn {
_SCN_OPEN_FILE,
_SCN_CLOSE_FILE,
_SCN_FILE_READ,
_SCN_FILE_SIZE,
_SCN_START_TASK,
_SCN_LOG_STRING,
_SCN_GET_KEY,
_SCN_ALLOCATE_RAM
};
static inline uint32_t _sc0(enum _scn eax) {
volatile uint32_t out;
asm (
"int $0x30"
: "=a" (out) : "a" (eax) : "ecx", "edx");
return out;
}
static inline uint32_t _sc1(enum _scn eax, uint32_t ebx) {
volatile uint32_t out;
asm (
"int $0x30"
: "=a" (out) : "a" (eax), "b" (ebx) : "ecx", "edx");
return out;
}
static inline uint32_t _sc2(enum _scn eax, uint32_t ebx, uint32_t ecx) {
volatile uint32_t out;
asm (
"int $0x30"
: "=a" (out) : "a" (eax), "b" (ebx), "c" (ecx) : "edx");
return out;
}
static inline uint32_t _sc3(enum _scn eax, uint32_t ebx, uint32_t ecx, uint32_t edx) {
volatile uint32_t out;
asm (
"int $0x30"
: "=a" (out) : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx));
return out;
}
static inline uint32_t _sc4(enum _scn eax, uint32_t ebx, uint32_t ecx, uint32_t edx, uint32_t esi) {
volatile uint32_t out;
asm (
"int $0x30"
: "=a" (out) : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi));
return out;
}
static inline uint32_t _sc5(enum _scn eax, uint32_t ebx, uint32_t ecx, uint32_t edx, uint32_t esi, uint32_t edi) {
volatile uint32_t out;
asm (
"int $0x30"
: "=a" (out) : "a" (eax), "b" (ebx), "c" (ecx), "d" (edx), "S" (esi), "D" (edi));
return out;
}
static inline void _yield_task() {
asm (
"int $0x39"
);
}
__attribute__ ((noreturn))
static inline void _exit_task() {
asm (
"int $0x38"
);
__builtin_unreachable();
}
static inline _file_handle_t _open_file(_drive_number_t drive_number, const char *path) {
return _sc2(_SCN_OPEN_FILE, drive_number, (uint32_t)path);
}
static inline void _close_file(_file_handle_t handle) {
_sc1(_SCN_CLOSE_FILE, handle);
}
static inline uint32_t _file_read(_file_handle_t handle, uint32_t file_offset, uint32_t count, void *buffer) {
return _sc4(_SCN_FILE_READ, handle, file_offset, count, (uint32_t)buffer);
}
static inline uint32_t _file_size(_file_handle_t handle) {
return _sc1(_SCN_FILE_SIZE, handle);
}
static inline void _start_task(_drive_number_t drive_number, char *path) {
_sc2(_SCN_START_TASK, drive_number, (uint32_t)path);
}
static inline void _log_string(const char *sz) {
_sc1(_SCN_LOG_STRING, (uint32_t)sz);
}
static inline _key_code_t _get_key() {
return _sc0(_SCN_GET_KEY);
}
static inline void *_allocate_ram(uint32_t pages) {
return (void *)_sc1(_SCN_ALLOCATE_RAM, pages);
}
#endif
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