syscalls.h

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#pragma once
 
#include <kernel/cpu/interrupt.h>
#include <kernel/cpu/stack_pointer.h>
#include <kernel/cpu/syscalls.h>
#include <kernel/mem/space.h>
 
#define SYS_PROCESS_EXIT 0
#define SYS_THREAD_EXIT 1
#define SYS_SPAWN 2
#define SYS_NANOSLEEP 3
#define SYS_ERRNO 4
#define SYS_GETPID 5
#define SYS_GETTID 6
#define SYS_UPTIME 7
#define SYS_UNIX_EPOCH 8
#define SYS_OPEN 9
#define SYS_OPEN2 10
#define SYS_CLOSE 11
#define SYS_READ 12
#define SYS_WRITE 13
#define SYS_SEEK 14
#define SYS_IOCTL 15
#define SYS_CHDIR 16
#define SYS_POLL 17
#define SYS_STAT 18
#define SYS_MMAP 19
#define SYS_MUNMAP 20
#define SYS_MPROTECT 21
#define SYS_GETDENTS 22
#define SYS_THREAD_CREATE 23
#define SYS_YIELD 24
#define SYS_DUP 25
#define SYS_DUP2 26
#define SYS_FUTEX 27
#define SYS_REMOVE 28
#define SYS_LINK 29
#define SYS_SHARE 30
#define SYS_CLAIM 31
#define SYS_BIND 32
 
#define SYS_TOTAL_AMOUNT 33
 
typedef struct
{
    uintptr_t kernelRsp;
    uintptr_t userRsp;
} syscall_ctx_t;
 
typedef struct
{
    uint32_t number;
    void* handler;
} syscall_descriptor_t;
 
extern syscall_descriptor_t _syscallTableStart[];
 
extern syscall_descriptor_t _syscallTableEnd[];
 
#define SYSCALL_DEFINE(num, returnType, ...) \
    returnType syscall_handler_##num(__VA_ARGS__); \
    const syscall_descriptor_t __syscall_##num __attribute__((used, section(".syscall_table"))) = { \
        .number = (num), \
        .handler = (void*)syscall_handler_##num, \
    }; \
    returnType syscall_handler_##num(__VA_ARGS__)
 
extern void syscall_entry(void);
 
void syscall_ctx_init(syscall_ctx_t* ctx, stack_pointer_t* kernelStack);
 
void syscall_ctx_load(syscall_ctx_t* ctx);
 
void syscall_table_init(void);
 
void syscalls_cpu_init(void);
 
uint64_t syscall_handler(uint64_t rdi, uint64_t rsi, uint64_t rdx, uint64_t rcx, uint64_t r8, uint64_t r9,
    uint64_t number);