X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Kernel%2Farch%2Fx86_64%2Finclude%2Farch.h;h=e43bd97c427f791c6c5b79b34134938760b4cb32;hb=046980a1afd982af07dc97aaadb186e31eebb340;hp=fd54898739acd1c6ee866e6a54ed86fa47f5a92c;hpb=586a47ab9343a85c944a2cf7b27a74cf459a8423;p=tpg%2Facess2.git

diff --git a/Kernel/arch/x86_64/include/arch.h b/Kernel/arch/x86_64/include/arch.h
index fd548987..e43bd97c 100644
--- a/Kernel/arch/x86_64/include/arch.h
+++ b/Kernel/arch/x86_64/include/arch.h
@@ -10,6 +10,11 @@
 #define KERNEL_BASE	0xFFFFFFFF##80000000
 #define BITS	64
 
+#define STACKED_LOCKS	2	// 0: No, 1: Per-CPU, 2: Per-Thread
+#define LOCK_DISABLE_INTS	0
+
+#define INVLPTR	((void*)0x0FFFFFFFFFFFFFFFULL)
+
 //#define INT_MAX	0x7FFFFFFF
 //#define UINT_MAX	0xFFFFFFFF
 
@@ -34,15 +39,19 @@ typedef Uint64	tPAddr;
 typedef Uint64	tVAddr;
 
 typedef Uint64	size_t;
+typedef char	BOOL;
+
+#define __ASM__	__asm__ __volatile__
 
-typedef volatile int    tSpinlock;
-#define IS_LOCKED(lockptr)      (!!(*(tSpinlock*)lockptr))
-#define LOCK(lockptr)   do {int v=1;\
-	while(v)\
-	__asm__ __volatile__("lock xchgl %0, (%2)":"=r"(v):"r"(1),"r"(lockptr));\
-	}while(0)
-#define RELEASE(lockptr)	__asm__ __volatile__("lock andl $0, (%0)"::"r"(lockptr));
-#define HALT()  __asm__ __volatile__ ("hlt")
+// === MACROS ===
+/**
+ * \brief Halt the CPU
+ */
+#define	HALT()	__asm__ __volatile__ ("sti;\n\thlt")
+/**
+ * \brief Fire a magic breakpoint (bochs)
+ */
+#define	MAGIC_BREAK()	__asm__ __volatile__ ("xchg %bx, %bx")
 
 // Systemcall Registers
 // TODO: Fix this structure
@@ -68,5 +77,29 @@ typedef struct sSyscallRegs
 	Uint	Resvd5[1];      // SS	
 }	tSyscallRegs;
 
+/**
+ * \brief Short Spinlock structure
+ */
+struct sShortSpinlock {
+	#if STACKED_LOCKS == 2
+	volatile void	*Lock;	//!< Lock value
+	#else
+	volatile int	Lock;	//!< Lock value
+	#endif
+	
+	#if LOCK_DISABLE_INTS
+	 int	IF;	//!< Interrupt state on call to SHORTLOCK
+	#endif
+	#if STACKED_LOCKS
+	 int	Depth;
+	#endif
+};
+
+// === FUNCTIONS ===
+extern int	IS_LOCKED(struct sShortSpinlock *Lock);
+extern int	CPU_HAS_LOCK(struct sShortSpinlock *Lock);
+extern void	SHORTLOCK(struct sShortSpinlock *Lock);
+extern void	SHORTREL(struct sShortSpinlock *Lock);
+
 #endif