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, 9 insertions, 0 deletions

diff --git a/src/arch/i386/gdt/farjump.s b/src/arch/i386/gdt/farjump.s
new file mode 100644
index 0000000..85d8ba5
--- /dev/null
+++ b/src/arch/i386/gdt/farjump.s
@@ -0,0 +1,9 @@
+.section .text
+.global gdt_farjump
+.type gdt_farjump, @function
+gdt_farjump:
+	/* retf pops off the return address and code segment off the stack.
+	 * it turns out that in the i386 cdecl calling convention they're in
+	 * the correct place already.
+	 */
+	retf