fix: setting up stack

1 files changed, 9 insertions, 3 deletions

diff --git a/src/main.zig b/src/main.zig
index 1f7facd..dedcb65 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -17,12 +17,18 @@ export const multiboot align(4) linksection(".multiboot") = MultibootHeader{
     .checksum = -(MAGIC + FLAGS),
 };
 
-export var stack_bytes: [16 * 1024]u8 align(16) linksection(".bss") = undefined;
-const stack_bytes_slice = stack_bytes[0..];
+export var stack: [16 * 1024]u8 align(16) linksection(".bss") = undefined;
+const stack_bytes_slice = stack[0..];
 
 export fn _start() callconv(.Naked) noreturn {
     // @call(.{ .stack = stack_bytes_slice }, kmain, .{});
-    asm volatile ("jmp kmain");
+    asm volatile (
+        \\ mov %[stk], %rsp
+        \\ mov %rsp, %rbp
+        :
+        : [stk] "{rcx}" (@intFromPtr(&stack) + @sizeOf(@TypeOf(stack))),
+    );
+    asm volatile ("call kmain");
 
     while (true) {}
 }