X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=KernelLand%2FKernel%2Farch%2Fx86_64%2Flib.c;h=977cffd1ee283d36c687ab951c53d17f824ace95;hb=641a3c5a09b61973431c5772333f65eeb76e76c0;hp=cbcf769fc6c84bee1262a517800515d1aaca16af;hpb=50e4e842d87975295f0b4cc9989cca9372a439e8;p=tpg%2Facess2.git

diff --git a/KernelLand/Kernel/arch/x86_64/lib.c b/KernelLand/Kernel/arch/x86_64/lib.c
index cbcf769f..977cffd1 100644
--- a/KernelLand/Kernel/arch/x86_64/lib.c
+++ b/KernelLand/Kernel/arch/x86_64/lib.c
@@ -20,6 +20,7 @@ extern void	*Proc_GetCurThread(void);
 
 // === PROTOTYPEs ===
  int	putDebugChar(char ch);
+void	Debug_SerialIRQHandler(int irq, void *unused);
 
 // === CODE ===
 /**
@@ -145,6 +146,18 @@ void SHORTREL(struct sShortSpinlock *Lock)
 	#endif
 }
 
+void __AtomicTestSetLoop(Uint *Ptr, Uint Value)
+{
+	__ASM__(
+		"1:\n\t"
+		"xor %%eax, %%eax;\n\t"
+		"lock cmpxchg %0, (%1);\n\t"	// if( Ptr==0 ) { ZF=1; Ptr=Value } else { ZF=0; _=Ptr }
+		"jnz 1b;\n\t"
+		:: "r"(Value), "r"(Ptr)
+		: "eax" // EAX clobbered
+		);
+}
+
 // === DEBUG IO ===
 #if USE_GDB_STUB
 void initGdbSerial(void)