From 7199e74aa22e592a3b77bdd81f735edca5470596 Mon Sep 17 00:00:00 2001
From: Benji Dial <benji@benjidial.net>
Date: Sat, 20 Jan 2024 17:59:40 -0500
Subject: update

---
 libraries/euler/syscall.asm | 82 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 libraries/euler/syscall.asm

(limited to 'libraries/euler/syscall.asm')

diff --git a/libraries/euler/syscall.asm b/libraries/euler/syscall.asm
new file mode 100644
index 0000000..f7fe735
--- /dev/null
+++ b/libraries/euler/syscall.asm
@@ -0,0 +1,82 @@
+bits 64
+
+section .text
+
+global _syscall_encode_color
+_syscall_encode_color:
+  xor rax, rax
+  and edi, 0xff
+  and dx, 0xff
+  shl si, 8
+  shl edx, 16
+  or di, si
+  or edi, edx
+  syscall
+  ret
+
+global _syscall_get_framebuffer
+_syscall_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
+  pop rcx
+  shr rdi, 32
+  mov dword [rcx], edi
+  pop rcx
+  mov dword [rcx], esi
+  ret
+
+global _syscall_open_file
+_syscall_open_file:
+  mov rax, 2
+  push rdx
+  syscall
+  pop rdx
+  mov qword [rdx], rdi
+  ret
+
+global _syscall_get_file_length
+_syscall_get_file_length:
+  mov rax, 3
+  push rsi
+  syscall
+  pop rsi
+  mov qword [rsi], rdi
+  ret
+
+global _syscall_read_from_file
+_syscall_read_from_file:
+  mov rax, 4
+  push rcx
+  push rdx
+  push rsi
+  push rdi
+  mov rdi, rsp
+  syscall
+  add rsp, 32
+  ret
+
+global _syscall_end_this_process
+_syscall_end_this_process:
+  mov rax, 5
+  syscall
+  ;does not return
+
+global _syscall_get_new_pages
+_syscall_get_new_pages:
+  mov rax, 6
+  syscall
+  ret
+
+global _syscall_close_file
+_syscall_close_file:
+  mov rax, 7
+  syscall
+  ret
-- 
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