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-v850/system.h b/include/asm-v850/system.h
new file mode 100644
index 0000000..20f4c738
--- /dev/null
+++ b/include/asm-v850/system.h
@@ -0,0 +1,113 @@
+/*
+ * include/asm-v850/system.h -- Low-level interrupt/thread ops
+ *
+ * Copyright (C) 2001,02,03 NEC Electronics Corporation
+ * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of this
+ * archive for more details.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ */
+
+#ifndef __V850_SYSTEM_H__
+#define __V850_SYSTEM_H__
+
+#include <linux/linkage.h>
+#include <asm/ptrace.h>
+
+
+#define prepare_to_switch() do { } while (0)
+
+/*
+ * switch_to(n) should switch tasks to task ptr, first checking that
+ * ptr isn't the current task, in which case it does nothing.
+ */
+struct thread_struct;
+extern void *switch_thread (struct thread_struct *last,
+ struct thread_struct *next);
+#define switch_to(prev,next,last) \
+ do { \
+ if (prev != next) { \
+ (last) = switch_thread (&prev->thread, &next->thread); \
+ } \
+ } while (0)
+
+
+/* Enable/disable interrupts. */
+#define local_irq_enable() __asm__ __volatile__ ("ei")
+#define local_irq_disable() __asm__ __volatile__ ("di")
+
+#define local_save_flags(flags) \
+ __asm__ __volatile__ ("stsr %1, %0" : "=r" (flags) : "i" (SR_PSW))
+#define local_restore_flags(flags) \
+ __asm__ __volatile__ ("ldsr %0, %1" :: "r" (flags), "i" (SR_PSW))
+
+/* For spinlocks etc */
+#define local_irq_save(flags) \
+ do { local_save_flags (flags); local_irq_disable (); } while (0)
+#define local_irq_restore(flags) \
+ local_restore_flags (flags);
+
+
+static inline int irqs_disabled (void)
+{
+ unsigned flags;
+ local_save_flags (flags);
+ return !!(flags & 0x20);
+}
+
+
+/*
+ * Force strict CPU ordering.
+ * Not really required on v850...
+ */
+#define nop() __asm__ __volatile__ ("nop")
+#define mb() __asm__ __volatile__ ("" ::: "memory")
+#define rmb() mb ()
+#define wmb() mb ()
+#define read_barrier_depends() ((void)0)
+#define set_rmb(var, value) do { xchg (&var, value); } while (0)
+#define set_mb(var, value) set_rmb (var, value)
+#define set_wmb(var, value) do { var = value; wmb (); } while (0)
+
+#define smp_mb() mb ()
+#define smp_rmb() rmb ()
+#define smp_wmb() wmb ()
+#define smp_read_barrier_depends() read_barrier_depends()
+
+#define xchg(ptr, with) \
+ ((__typeof__ (*(ptr)))__xchg ((unsigned long)(with), (ptr), sizeof (*(ptr))))
+#define tas(ptr) (xchg ((ptr), 1))
+
+extern inline unsigned long __xchg (unsigned long with,
+ __volatile__ void *ptr, int size)
+{
+ unsigned long tmp, flags;
+
+ local_irq_save (flags);
+
+ switch (size) {
+ case 1:
+ tmp = *(unsigned char *)ptr;
+ *(unsigned char *)ptr = with;
+ break;
+ case 2:
+ tmp = *(unsigned short *)ptr;
+ *(unsigned short *)ptr = with;
+ break;
+ case 4:
+ tmp = *(unsigned long *)ptr;
+ *(unsigned long *)ptr = with;
+ break;
+ }
+
+ local_irq_restore (flags);
+
+ return tmp;
+}
+
+#define arch_align_stack(x) (x)
+
+#endif /* __V850_SYSTEM_H__ */