X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Kernel%2Farch%2Fx86%2Finclude%2Farch.h;h=996f41851e575bf8c89c9cc4e85d55eb8a0ba302;hb=53436af44ded8bc345d4d3d1a9fe25de4d6f23bc;hp=18267576e53f4f9e968e991ac63760dccf2ec784;hpb=d52a53f035af92941c0cafe5f81888fed16d2462;p=tpg%2Facess2.git

diff --git a/Kernel/arch/x86/include/arch.h b/Kernel/arch/x86/include/arch.h
index 18267576..996f4185 100644
--- a/Kernel/arch/x86/include/arch.h
+++ b/Kernel/arch/x86/include/arch.h
@@ -44,6 +44,7 @@
 
 // === MACROS ===
 typedef volatile int	tSpinlock;
+#define IS_LOCKED(lockptr)	(!!(*(tSpinlock*)lockptr))
 #define LOCK(lockptr)	do {int v=1;\
 	while(v)__asm__ __volatile__("lock xchgl %%eax, (%%edi)":"=a"(v):"a"(1),"D"(lockptr));}while(0)
 #define	RELEASE(lockptr)	__asm__ __volatile__("lock andl $0, (%%edi)"::"D"(lockptr));