Some bits of Linux/MIPS host support, still segfaulty.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2771 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 22 insertions, 0 deletions

diff --git a/exec-all.h b/exec-all.h
index cb8936a69..bc118c8a4 100644
--- a/exec-all.h
+++ b/exec-all.h
@@ -481,6 +481,28 @@ static inline int testandset (int *p)
 }
 #endif
 
+#ifdef __mips__
+static inline int testandset (int *p)
+{
+    int ret;
+
+    __asm__ __volatile__ (
+	"	.set push		\n"
+	"	.set noat		\n"
+	"	.set mips2		\n"
+	"1:	li	$1, 1		\n"
+	"	ll	%0, %1		\n"
+	"	sc	$1, %1		\n"
+	"	bnez	$1, 1b		\n"
+	"	.set pop		"
+	: "=r" (ret), "+R" (*p)
+	:
+	: "memory");
+
+    return ret;
+}
+#endif
+
 typedef int spinlock_t;
 
 #define SPIN_LOCK_UNLOCKED 0