a sensible source structure

The idea is that src/kernel/ is only allowed to interface with the
hardware using whatever's defined in src/arch/generic.h. I'll probably
write a small script for checking this later on.

This is a giant commit so I've probably fucked something up. It boots
fine on Bochs and QEMU, so at least there's that.

1 files changed, 25 insertions, 0 deletions

diff --git a/src/arch/i386/boot.s b/src/arch/i386/boot.s
new file mode 100644
index 0000000..74ec312
--- /dev/null
+++ b/src/arch/i386/boot.s
@@ -0,0 +1,25 @@
+/* a lil stack TODO move to linker.ld */
+.section .bss
+.global stack_top
+.type stack_top, @object
+.align 16
+stack_bottom:
+.skip 16384
+stack_top:
+
+
+.section .text
+.global _start
+.type _start, @function
+_start:
+	mov $stack_top, %esp
+	call kmain_early
+
+.global halt_cpu
+.type halt_cpu, @function
+halt_cpu:
+	cli
+1:	hlt
+	jmp 1b
+
+.size _start, . - _start