From 62571fa649ebdff62f4c70f694371223d0f98115 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ciro=20Santilli=20=E5=85=AD=E5=9B=9B=E4=BA=8B=E4=BB=B6=20?=
 =?UTF-8?q?=E6=B3=95=E8=BD=AE=E5=8A=9F?= <ciro.santilli@gmail.com>
Date: Wed, 8 May 2019 00:00:05 +0000
Subject: [PATCH] aarch64: fix ASSERT_EQ_REG tests on gem5

Was doing an 8-byte aligned store, which gem5 dislikes.

But the ARMARM says bad things may happen there, notably a signal:
"D1.8.2 SP alignment checking" so gem5 is not really too wrong,
QEMU just happens to work by chance.
---
 userland/arch/aarch64/common_arch.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/userland/arch/aarch64/common_arch.h b/userland/arch/aarch64/common_arch.h
index 9f70dc4..84c3140 100644
--- a/userland/arch/aarch64/common_arch.h
+++ b/userland/arch/aarch64/common_arch.h
@@ -16,9 +16,9 @@
 ;
 
 #define ASSERT_EQ_REG(reg1, reg2) \
-    str reg2, [sp, -8]!; \
+    str reg2, [sp, -16]!; \
     mov x0, reg1; \
-    ldr x1, [sp], 8; \
+    ldr x1, [sp], 16; \
     ASSERT_EQ_DO(64); \
 ;