FreeCalypso > hg > freecalypso-tools

diff target-utils/env/crt0.S @ 0:e7502631a0f9

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initial import from freecalypso-sw rev 1033:5ab737ac3ad7
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 11 Jun 2016 00:13:35 +0000
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/target-utils/env/crt0.S	Sat Jun 11 00:13:35 2016 +0000
@@ -0,0 +1,19 @@
+#include "halt.h"
+
+	.text
+	.code	32
+	.global	_entry
+_entry:
+	ldr	sp, =stack_bottom
+@ zero bss
+	ldr	r0, =__bss_start
+	ldr	r2, =__bss_end
+	sub	r1, r2, r0
+	bl	bzero
+@ C code entry
+	bl	main
+	mov	r0, #HALTCODE_MAINEXITED
+	.global	_exit
+_exit:	nop
+1:	nop
+	b	1b