X-Git-Url: http://git.joshuawise.com/netwatch.git/blobdiff_plain/f2b87dd63dc50a707ac102db7afb849b1f4f8db0..0889f342f13f65b875e67f78a27ad078f3f55736:/tools/poke-rls-asm.S?ds=sidebyside

diff --git a/tools/poke-rls-asm.S b/tools/poke-rls-asm.S
new file mode 100644
index 0000000..ee44854
--- /dev/null
+++ b/tools/poke-rls-asm.S
@@ -0,0 +1,20 @@
+.global poke
+poke:
+	# Preload registers: $0x1BADD00D
+	mov $0x1BADD00D, %ecx
+
+	# Parameter: I/O port to set bit 2 of
+	mov 4(%esp), %dx
+	inl %dx, %eax
+	or $4, %eax
+	outl %eax, %dx
+
+	# Count down for a while
+	mov $0x10000, %edx
+loop:
+	dec %edx
+	jz loop
+
+	# Maybe SMM poked something?
+	mov %ecx, %eax
+	ret