Upload current libxunil, to be used as a submodule

src/syscall.rs

@@ -0,0 +1,77 @@
+pub const READ: usize = 0;
+pub const WRITE: usize = 1;
+pub const OPEN: usize = 2;
+pub const CLOSE: usize = 3;
+pub const STAT: usize = 4;
+pub const LSEEK: usize = 8;
+pub const MMAP: usize = 9;
+pub const MUNMAP: usize = 9;
+pub const BRK: usize = 12;
+pub const GETPID: usize = 39;
+pub const FORK: usize = 57;
+pub const EXECVE: usize = 59;
+pub const EXIT: usize = 60;
+pub const WAIT4: usize = 61;
+pub const KILL: usize = 62;
+pub const CHDIR: usize = 80;
+pub const MKDIR: usize = 83;
+pub const UNLINK: usize = 87;
+pub const GETDENTS64: usize = 217;
+pub const CLOCK_GETTIME: usize = 228;
+pub const EXIT_GROUP: usize = 231;
+pub const SLEEP: usize = 909090; // zzz haha
+pub const DRAW_PIXEL: usize = 5555;
+pub const DRAW_BUFFER: usize = 7777;
+pub const FRAMEBUFFER_SWAP: usize = 6666;
+
+#[inline(always)]
+pub unsafe fn syscall0(num: usize) -> isize {
+    let ret: isize;
+    unsafe {
+        core::arch::asm!(
+            "int 0x80",
+            in("rax") num,
+            lateout("rax") ret,
+            clobber_abi("sysv64"),
+            options(nostack)
+        );
+    }
+
+    ret
+}
+
+#[inline(always)]
+pub unsafe fn syscall1(num: usize, arg0: isize) -> isize {
+    let ret: isize;
+    unsafe {
+        core::arch::asm!(
+            "int 0x80",
+            in("rax") num,
+            in("rdi") arg0,
+            lateout("rax") ret,
+            clobber_abi("sysv64"),
+            options(nostack)
+        );
+    }
+
+    ret
+}
+
+#[inline(always)]
+pub unsafe fn syscall3(num: usize, arg0: isize, arg1: isize, arg2: isize) -> isize {
+    let ret: isize;
+    unsafe {
+        core::arch::asm!(
+            "int 0x80",
+            in("rax") num,
+            in("rdi") arg0,
+            in("rsi") arg1,
+            in("rdx") arg2,
+            lateout("rax") ret,
+            clobber_abi("sysv64"),
+            options(nostack)
+        );
+    }
+
+    ret
+}