Kernel/x86 - Fixing build

[tpg/acess2.git] / Kernel / arch / x86 / lib.c

diff --git a/Kernel/arch/x86/lib.c b/Kernel/arch/x86/lib.c
index 0471deb..3858eff 100644 (file)
--- a/Kernel/arch/x86/lib.c
+++ b/Kernel/arch/x86/lib.c
@@ -82,9 +82,12 @@ void SHORTLOCK(struct sShortSpinlock *Lock)
        __ASM__("cli");
        
        // Wait for another CPU to release
-       while(v) {
-               __ASM__("xchgl %%eax, (%%edi)":"=a"(v):"a"(cpu),"D"(&Lock->Lock));
-       }
+       __ASM__(
+               "1: lock cmpxchgl %2, (%3)\n\t"
+               "jnz 1b"
+               : "=a"(v)
+               : "a"(0), "r"(cpu), "r"(&Lock->Lock)
+               );
        
        Lock->IF = IF;