From: Marc-André Lureau <marcandre.lureau@redhat.com>
Date: Mon, 26 Feb 2018 14:12:11 +0000 (-0500)
Subject: x86: add readq()
X-Git-Tag: rel-1.12.0~34
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=8694c3bc847c12857edfb7dbb4e24e97b1e1861b;p=seabios.git

x86: add readq()

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Tested-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
---

diff --git a/src/x86.h b/src/x86.h
index 4aea65c..c7bb60d 100644
--- a/src/x86.h
+++ b/src/x86.h
@@ -211,6 +211,11 @@ static inline void writeb(void *addr, u8 val) {
     barrier();
     *(volatile u8 *)addr = val;
 }
+static inline u64 readq(const void *addr) {
+    u64 val = *(volatile const u64 *)addr;
+    barrier();
+    return val;
+}
 static inline u32 readl(const void *addr) {
     u32 val = *(volatile const u32 *)addr;
     barrier();