Linux-2.6.12-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!
diff --git a/include/asm-ia64/intrinsics.h b/include/asm-ia64/intrinsics.h
new file mode 100644
index 0000000..8089f95
--- /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 */