1 files changed, 18 insertions, 0 deletions
diff --git a/asm-tests/i386-pc.S b/asm-tests/i386-pc.S
new file mode 100644
index 0000000..d037744
--- /dev/null
+++ b/asm-tests/i386-pc.S
@@ -0,0 +1,18 @@
+/* on x86 old clang doesn't support .code16
+   newer clang supports it but creates 6-byte jumps instead of 3-byte ones
+   which makes us go over boot sector size.
+   Starting with 3.9 clang emits 3-byte jumps but still creates 8-bytes movl
+   instead of 5-bytes, so code overflows into data.  */
+
+	.code16
+	jmp far
+	.org 4
+	jmp nearer
+	.org 6
+	movl nearer, %ebx
+	.org 11
+	.space 100
+nearer:
+	.space 200
+far:
+	.byte 0