application loading

2 files changed, 49 insertions, 0 deletions

diff --git a/stdlib/entry.cpp b/stdlib/entry.cpp
new file mode 100644
index 0000000..5557c8a
--- /dev/null
+++ b/stdlib/entry.cpp
@@ -0,0 +1,14 @@
+int main(int argc, char **argv);
+
+extern "C" [[noreturn]] void _entry() {
+  //TODO: get command line via system call and populate argc and argv.
+  int argc = 0;
+  char **argv = 0;
+
+  int result = main(argc, argv);
+
+  //TODO: exit via system call and return result.
+  (void)result;
+  while (1)
+    ;
+}
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