From: bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Tue, 29 Apr 2003 21:07:28 +0000 (+0000)
Subject: alpha support
X-Git-Tag: v0.2.0~86
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e026db5893aeff66bbc1153002b5285bc361c0a2;p=thirdparty%2Fqemu.git

alpha support


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@111 c046a42c-6fe2-441c-8c8c-71466251a162
---

diff --git a/exec-i386.c b/exec-i386.c
index b75c6c70a00..508d0688245 100644
--- a/exec-i386.c
+++ b/exec-i386.c
@@ -102,6 +102,25 @@ static inline int testandset (int *p)
 }
 #endif
 
+#ifdef __alpha__
+int testandset (int *p)
+{
+    int ret;
+    unsigned long one;
+
+    __asm__ __volatile__ ("0:	mov 1,%2\n"
+			  "	ldl_l %0,%1\n"
+			  "	stl_c %2,%1\n"
+			  "	beq %2,1f\n"
+			  ".subsection 2\n"
+			  "1:	br 0b\n"
+			  ".previous"
+			  : "=r" (ret), "=m" (*p), "=r" (one)
+			  : "m" (*p));
+    return ret;
+}
+#endif
+
 int global_cpu_lock = 0;
 
 void cpu_lock(void)