From 4130562b1555cabe441efe9420cebe12e7ed8d39 Mon Sep 17 00:00:00 2001
From: Benji Dial <benji@benjidial.net>
Date: Sat, 13 Jan 2024 16:43:49 -0500
Subject: application loading

---
 stdlib/syscall.asm | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 stdlib/syscall.asm

(limited to 'stdlib/syscall.asm')

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
-- 
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