1 files changed, 68 insertions, 0 deletions

diff --git a/sys.asm b/sys.asm
new file mode 100644
index 0000000..b9ab190
--- /dev/null
+++ b/sys.asm
@@ -0,0 +1,68 @@
+STDIN equ 0
+STDOUT equ 1
+STDERR equ 2
+
+O_RDONLY equ 0
+O_WRONLY equ 1
+O_RDWR equ 2
+
+macro scall1 v_rax, v_rdi
+{
+  mov rax, v_rax
+  mov rdi, v_rdi
+  syscall
+}
+
+macro scall2 v_rax, v_rdi, v_rsi
+{
+  mov rax, v_rax
+  mov rdi, v_rdi
+  mov rsi, v_rsi
+  syscall
+}
+
+macro scall3 v_rax, v_rdi, v_rsi, v_rdx
+{
+  mov rax, v_rax
+  mov rdi, v_rdi
+  mov rsi, v_rsi
+  mov rdx, v_rdx
+  syscall
+}
+
+macro ls_read fd, buf, count { scall3 0, fd, buf, count }
+
+macro ls_write fd, buf, count { scall3 1, fd, buf, count }
+
+macro ls_open filename, flags, mode { scall3 2, filename, flags, mode }
+
+macro ls_close fd { scall1 3, fd }
+
+;; kernel: arch/x86/include/uapi/asm/stat.h
+;; struc stat
+;; {
+;;   .st_dev rd 1
+;;   .st_ino rd 1
+;;   .st_mode rw 1
+;;   .st_nlink rw 1
+;;   .st_uid rw 1
+;;   .st_gid rw 1
+;;   .st_rdev rd 1
+;;   .st_size rd 1
+;;   .st_blksize rd 1
+;;   .st_blocks rd 1
+;; 
+;;   .st_atime rd 1
+;;   .st_atime_nsec rd 1
+;;   .st_mtime rd 1
+;;   .st_mtime_nsec rd 1
+;;   .st_ctime rd 1
+;;   .st_ctime_nsec rd 1
+;; 
+;;   .__unused4 rd 1
+;;   .__unused5 rd 1
+;; }
+macro ls_stat filename, statbuf { scall2 4, filename, statbuf }
+
+macro ls_exit status { scall1 60, status }
+