application loading

1 files changed, 35 insertions, 0 deletions

diff --git a/stdlib/syscall.asm b/stdlib/syscall.asm
new file mode 100644
index 0000000..eba7ec0
--- /dev/null
+++ b/stdlib/syscall.asm
@@ -0,0 +1,35 @@
+bits 64
+
+global encode_color
+global get_framebuffer
+global draw_framebuffer
+
+section .text
+
+encode_color:
+  mov rax, 0
+  syscall
+  ret
+
+get_framebuffer:
+  push rcx
+  push rdx
+  push rsi
+  push rdi
+  mov rax, 1
+  syscall
+  pop rcx
+  mov qword [rcx], rax
+  pop rcx
+  mov dword [rcx], edi
+  shr rdi, 32
+  pop rcx
+  mov dword [rcx], edi
+  pop rcx
+  mov dword [rcx], esi
+  ret
+
+draw_framebuffer:
+  mov rax, 2
+  syscall
+  ret