X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=kern%2Fsrc%2Fstartup.asm;fp=kern%2Fsrc%2Fstartup.asm;h=c90cef6d5b65786af79743fb92cc48c93ee040d7;hb=426ed1c5006c82261fee2eea3feafe3282b2b862;hp=0000000000000000000000000000000000000000;hpb=a7e2224fbb33e0662d6fd3fe21e91f5fe185fd4b;p=eightysix

diff --git a/kern/src/startup.asm b/kern/src/startup.asm
new file mode 100644
index 0000000..c90cef6
--- /dev/null
+++ b/kern/src/startup.asm
@@ -0,0 +1,28 @@
+; second stage boot loader C startup
+	cpu 8086
+	bits 16
+	section .startup
+
+extern bootmain
+extern _stage2_start_seg
+extern _bss_start_off
+extern _bss_size
+
+global _start
+_start:
+	; TODO floppy off if necessary
+
+	; zero .bss
+	mov di, _bss_start_off
+	mov cx, _bss_size
+	shr cx, 1
+	rep stosw
+	xor ax, ax
+	mov es, ax
+
+	call bootmain
+
+hang:	hlt
+	jmp hang
+
+; vi:set ts=8 sts=8 sw=8 ft=nasm: