Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 181 insertions, 0 deletions

diff --git a/include/asm-ia64/intrinsics.h b/include/asm-ia64/intrinsics.h
new file mode 100644
index 00000000000..8089f955e5d
--- /dev/null
+++ b/include/asm-ia64/intrinsics.h
@@ -0,0 +1,181 @@
+#ifndef _ASM_IA64_INTRINSICS_H
+#define _ASM_IA64_INTRINSICS_H
+
+/*
+ * Compiler-dependent intrinsics.
+ *
+ * Copyright (C) 2002-2003 Hewlett-Packard Co
+ *	David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+
+#ifndef __ASSEMBLY__
+#include <linux/config.h>
+
+/* include compiler specific intrinsics */
+#include <asm/ia64regs.h>
+#ifdef __INTEL_COMPILER
+# include <asm/intel_intrin.h>
+#else
+# include <asm/gcc_intrin.h>
+#endif
+
+/*
+ * Force an unresolved reference if someone tries to use
+ * ia64_fetch_and_add() with a bad value.
+ */
+extern unsigned long __bad_size_for_ia64_fetch_and_add (void);
+extern unsigned long __bad_increment_for_ia64_fetch_and_add (void);
+
+#define IA64_FETCHADD(tmp,v,n,sz,sem)						\
+({										\
+	switch (sz) {								\
+	      case 4:								\
+	        tmp = ia64_fetchadd4_##sem((unsigned int *) v, n);		\
+		break;								\
+										\
+	      case 8:								\
+	        tmp = ia64_fetchadd8_##sem((unsigned long *) v, n);		\
+		break;								\
+										\
+	      default:								\
+		__bad_size_for_ia64_fetch_and_add();				\
+	}									\
+})
+
+#define ia64_fetchadd(i,v,sem)								\
+({											\
+	__u64 _tmp;									\
+	volatile __typeof__(*(v)) *_v = (v);						\
+	/* Can't use a switch () here: gcc isn't always smart enough for that... */	\
+	if ((i) == -16)									\
+		IA64_FETCHADD(_tmp, _v, -16, sizeof(*(v)), sem);			\
+	else if ((i) == -8)								\
+		IA64_FETCHADD(_tmp, _v, -8, sizeof(*(v)), sem);				\
+	else if ((i) == -4)								\
+		IA64_FETCHADD(_tmp, _v, -4, sizeof(*(v)), sem);				\
+	else if ((i) == -1)								\
+		IA64_FETCHADD(_tmp, _v, -1, sizeof(*(v)), sem);				\
+	else if ((i) == 1)								\
+		IA64_FETCHADD(_tmp, _v, 1, sizeof(*(v)), sem);				\
+	else if ((i) == 4)								\
+		IA64_FETCHADD(_tmp, _v, 4, sizeof(*(v)), sem);				\
+	else if ((i) == 8)								\
+		IA64_FETCHADD(_tmp, _v, 8, sizeof(*(v)), sem);				\
+	else if ((i) == 16)								\
+		IA64_FETCHADD(_tmp, _v, 16, sizeof(*(v)), sem);				\
+	else										\
+		_tmp = __bad_increment_for_ia64_fetch_and_add();			\
+	(__typeof__(*(v))) (_tmp);	/* return old value */				\
+})
+
+#define ia64_fetch_and_add(i,v)	(ia64_fetchadd(i, v, rel) + (i)) /* return new value */
+
+/*
+ * This function doesn't exist, so you'll get a linker error if
+ * something tries to do an invalid xchg().
+ */
+extern void ia64_xchg_called_with_bad_pointer (void);
+
+#define __xchg(x,ptr,size)						\
+({									\
+	unsigned long __xchg_result;					\
+									\
+	switch (size) {							\
+	      case 1:							\
+		__xchg_result = ia64_xchg1((__u8 *)ptr, x);		\
+		break;							\
+									\
+	      case 2:							\
+		__xchg_result = ia64_xchg2((__u16 *)ptr, x);		\
+		break;							\
+									\
+	      case 4:							\
+		__xchg_result = ia64_xchg4((__u32 *)ptr, x);		\
+		break;							\
+									\
+	      case 8:							\
+		__xchg_result = ia64_xchg8((__u64 *)ptr, x);		\
+		break;							\
+	      default:							\
+		ia64_xchg_called_with_bad_pointer();			\
+	}								\
+	__xchg_result;							\
+})
+
+#define xchg(ptr,x)							     \
+  ((__typeof__(*(ptr))) __xchg ((unsigned long) (x), (ptr), sizeof(*(ptr))))
+
+/*
+ * Atomic compare and exchange.  Compare OLD with MEM, if identical,
+ * store NEW in MEM.  Return the initial value in MEM.  Success is
+ * indicated by comparing RETURN with OLD.
+ */
+
+#define __HAVE_ARCH_CMPXCHG 1
+
+/*
+ * This function doesn't exist, so you'll get a linker error
+ * if something tries to do an invalid cmpxchg().
+ */
+extern long ia64_cmpxchg_called_with_bad_pointer (void);
+
+#define ia64_cmpxchg(sem,ptr,old,new,size)						\
+({											\
+	__u64 _o_, _r_;									\
+											\
+	switch (size) {									\
+	      case 1: _o_ = (__u8 ) (long) (old); break;				\
+	      case 2: _o_ = (__u16) (long) (old); break;				\
+	      case 4: _o_ = (__u32) (long) (old); break;				\
+	      case 8: _o_ = (__u64) (long) (old); break;				\
+	      default: break;								\
+	}										\
+	switch (size) {									\
+	      case 1:									\
+	      	_r_ = ia64_cmpxchg1_##sem((__u8 *) ptr, new, _o_);			\
+		break;									\
+											\
+	      case 2:									\
+	       _r_ = ia64_cmpxchg2_##sem((__u16 *) ptr, new, _o_);			\
+		break;									\
+											\
+	      case 4:									\
+	      	_r_ = ia64_cmpxchg4_##sem((__u32 *) ptr, new, _o_);			\
+		break;									\
+											\
+	      case 8:									\
+		_r_ = ia64_cmpxchg8_##sem((__u64 *) ptr, new, _o_);			\
+		break;									\
+											\
+	      default:									\
+		_r_ = ia64_cmpxchg_called_with_bad_pointer();				\
+		break;									\
+	}										\
+	(__typeof__(old)) _r_;								\
+})
+
+#define cmpxchg_acq(ptr,o,n)	ia64_cmpxchg(acq, (ptr), (o), (n), sizeof(*(ptr)))
+#define cmpxchg_rel(ptr,o,n)	ia64_cmpxchg(rel, (ptr), (o), (n), sizeof(*(ptr)))
+
+/* for compatibility with other platforms: */
+#define cmpxchg(ptr,o,n)	cmpxchg_acq(ptr,o,n)
+
+#ifdef CONFIG_IA64_DEBUG_CMPXCHG
+# define CMPXCHG_BUGCHECK_DECL	int _cmpxchg_bugcheck_count = 128;
+# define CMPXCHG_BUGCHECK(v)							\
+  do {										\
+	if (_cmpxchg_bugcheck_count-- <= 0) {					\
+		void *ip;							\
+		extern int printk(const char *fmt, ...);			\
+		ip = (void *) ia64_getreg(_IA64_REG_IP);			\
+		printk("CMPXCHG_BUGCHECK: stuck at %p on word %p\n", ip, (v));	\
+		break;								\
+	}									\
+  } while (0)
+#else /* !CONFIG_IA64_DEBUG_CMPXCHG */
+# define CMPXCHG_BUGCHECK_DECL
+# define CMPXCHG_BUGCHECK(v)
+#endif /* !CONFIG_IA64_DEBUG_CMPXCHG */
+
+#endif
+#endif /* _ASM_IA64_INTRINSICS_H */