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, 264 insertions, 0 deletions

diff --git a/include/asm-sh/system.h b/include/asm-sh/system.h
new file mode 100644
index 000000000000..28a3c2d8bcd7
--- /dev/null
+++ b/include/asm-sh/system.h
@@ -0,0 +1,264 @@
+#ifndef __ASM_SH_SYSTEM_H
+#define __ASM_SH_SYSTEM_H
+
+/*
+ * Copyright (C) 1999, 2000  Niibe Yutaka  &  Kaz Kojima
+ * Copyright (C) 2002 Paul Mundt
+ */
+
+#include <linux/config.h>
+
+/*
+ *      switch_to() should switch tasks to task nr n, first
+ */
+
+#define switch_to(prev, next, last) do {                                \
+ task_t *__last;                                                        \
+ register unsigned long *__ts1 __asm__ ("r1") = &prev->thread.sp;       \
+ register unsigned long *__ts2 __asm__ ("r2") = &prev->thread.pc;       \
+ register unsigned long *__ts4 __asm__ ("r4") = (unsigned long *)prev;  \
+ register unsigned long *__ts5 __asm__ ("r5") = (unsigned long *)next;  \
+ register unsigned long *__ts6 __asm__ ("r6") = &next->thread.sp;       \
+ register unsigned long __ts7 __asm__ ("r7") = next->thread.pc;         \
+ __asm__ __volatile__ (".balign 4\n\t"                                  \
+                       "stc.l   gbr, @-r15\n\t"                         \
+                       "sts.l   pr, @-r15\n\t"                          \
+                       "mov.l   r8, @-r15\n\t"                          \
+                       "mov.l   r9, @-r15\n\t"                          \
+                       "mov.l   r10, @-r15\n\t"                         \
+                       "mov.l   r11, @-r15\n\t"                         \
+                       "mov.l   r12, @-r15\n\t"                         \
+                       "mov.l   r13, @-r15\n\t"                         \
+                       "mov.l   r14, @-r15\n\t"                         \
+                       "mov.l   r15, @r1        ! save SP\n\t"          \
+                       "mov.l   @r6, r15        ! change to new stack\n\t" \
+                       "mova    1f, %0\n\t"                             \
+                       "mov.l   %0, @r2         ! save PC\n\t"          \
+                       "mov.l   2f, %0\n\t"                             \
+                       "jmp     @%0             ! call __switch_to\n\t" \
+                       " lds    r7, pr          !  with return to new PC\n\t" \
+                       ".balign 4\n"                                    \
+                       "2:\n\t"                                         \
+                       ".long   __switch_to\n"                          \
+                       "1:\n\t"                                         \
+                       "mov.l   @r15+, r14\n\t"                         \
+                       "mov.l   @r15+, r13\n\t"                         \
+                       "mov.l   @r15+, r12\n\t"                         \
+                       "mov.l   @r15+, r11\n\t"                         \
+                       "mov.l   @r15+, r10\n\t"                         \
+                       "mov.l   @r15+, r9\n\t"                          \
+                       "mov.l   @r15+, r8\n\t"                          \
+                       "lds.l   @r15+, pr\n\t"                          \
+                       "ldc.l   @r15+, gbr\n\t"                         \
+                       : "=z" (__last)                                  \
+                       : "r" (__ts1), "r" (__ts2), "r" (__ts4),         \
+                         "r" (__ts5), "r" (__ts6), "r" (__ts7)          \
+                       : "r3", "t");                                    \
+        last = __last;                                                  \
+} while (0)
+
+#define nop() __asm__ __volatile__ ("nop")
+
+
+#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
+
+static __inline__ unsigned long tas(volatile int *m)
+{ /* #define tas(ptr) (xchg((ptr),1)) */
+        unsigned long retval;
+
+        __asm__ __volatile__ ("tas.b    @%1\n\t"
+                              "movt     %0"
+                              : "=r" (retval): "r" (m): "t", "memory");
+        return retval;
+}
+
+extern void __xchg_called_with_bad_pointer(void);
+
+#define mb()    __asm__ __volatile__ ("": : :"memory")
+#define rmb()   mb()
+#define wmb()   __asm__ __volatile__ ("": : :"memory")
+#define read_barrier_depends()  do { } while(0)
+
+#ifdef CONFIG_SMP
+#define smp_mb()        mb()
+#define smp_rmb()       rmb()
+#define smp_wmb()       wmb()
+#define smp_read_barrier_depends()      read_barrier_depends()
+#else
+#define smp_mb()        barrier()
+#define smp_rmb()       barrier()
+#define smp_wmb()       barrier()
+#define smp_read_barrier_depends()      do { } while(0)
+#endif
+
+#define set_mb(var, value) do { xchg(&var, value); } while (0)
+#define set_wmb(var, value) do { var = value; wmb(); } while (0)
+
+/* Interrupt Control */
+static __inline__ void local_irq_enable(void)
+{
+        unsigned long __dummy0, __dummy1;
+
+        __asm__ __volatile__("stc       sr, %0\n\t"
+                             "and       %1, %0\n\t"
+                             "stc       r6_bank, %1\n\t"
+                             "or        %1, %0\n\t"
+                             "ldc       %0, sr"
+                             : "=&r" (__dummy0), "=r" (__dummy1)
+                             : "1" (~0x000000f0)
+                             : "memory");
+}
+
+static __inline__ void local_irq_disable(void)
+{
+        unsigned long __dummy;
+        __asm__ __volatile__("stc       sr, %0\n\t"
+                             "or        #0xf0, %0\n\t"
+                             "ldc       %0, sr"
+                             : "=&z" (__dummy)
+                             : /* no inputs */
+                             : "memory");
+}
+
+#define local_save_flags(x) \
+        __asm__("stc sr, %0; and #0xf0, %0" : "=&z" (x) :/**/: "memory" )
+
+#define irqs_disabled()                 \
+({                                      \
+        unsigned long flags;            \
+        local_save_flags(flags);        \
+        (flags != 0);                   \
+})
+
+static __inline__ unsigned long local_irq_save(void)
+{
+        unsigned long flags, __dummy;
+
+        __asm__ __volatile__("stc       sr, %1\n\t"
+                             "mov       %1, %0\n\t"
+                             "or        #0xf0, %0\n\t"
+                             "ldc       %0, sr\n\t"
+                             "mov       %1, %0\n\t"
+                             "and       #0xf0, %0"
+                             : "=&z" (flags), "=&r" (__dummy)
+                             :/**/
+                             : "memory" );
+        return flags;
+}
+
+#ifdef DEBUG_CLI_STI
+static __inline__ void  local_irq_restore(unsigned long x)
+{
+        if ((x & 0x000000f0) != 0x000000f0)
+                local_irq_enable();
+        else {
+                unsigned long flags;
+                local_save_flags(flags);
+
+                if (flags == 0) {
+                        extern void dump_stack(void);
+                        printk(KERN_ERR "BUG!\n");
+                        dump_stack();
+                        local_irq_disable();
+                }
+        }
+}
+#else
+#define local_irq_restore(x) do {                       \
+        if ((x & 0x000000f0) != 0x000000f0)             \
+                local_irq_enable();                             \
+} while (0)
+#endif
+
+#define really_restore_flags(x) do {                    \
+        if ((x & 0x000000f0) != 0x000000f0)             \
+                local_irq_enable();                             \
+        else                                            \
+                local_irq_disable();                            \
+} while (0)
+
+/*
+ * Jump to P2 area.
+ * When handling TLB or caches, we need to do it from P2 area.
+ */
+#define jump_to_P2()                    \
+do {                                    \
+        unsigned long __dummy;          \
+        __asm__ __volatile__(           \
+                "mov.l  1f, %0\n\t"     \
+                "or     %1, %0\n\t"     \
+                "jmp    @%0\n\t"        \
+                " nop\n\t"              \
+                ".balign 4\n"           \
+                "1:     .long 2f\n"     \
+                "2:"                    \
+                : "=&r" (__dummy)       \
+                : "r" (0x20000000));    \
+} while (0)
+
+/*
+ * Back to P1 area.
+ */
+#define back_to_P1()                                    \
+do {                                                    \
+        unsigned long __dummy;                          \
+        __asm__ __volatile__(                           \
+                "nop;nop;nop;nop;nop;nop;nop\n\t"       \
+                "mov.l  1f, %0\n\t"                     \
+                "jmp    @%0\n\t"                        \
+                " nop\n\t"                              \
+                ".balign 4\n"                           \
+                "1:     .long 2f\n"                     \
+                "2:"                                    \
+                : "=&r" (__dummy));                     \
+} while (0)
+
+/* For spinlocks etc */
+#define local_irq_save(x)       x = local_irq_save()
+
+static __inline__ unsigned long xchg_u32(volatile int * m, unsigned long val)
+{
+        unsigned long flags, retval;
+
+        local_irq_save(flags);
+        retval = *m;
+        *m = val;
+        local_irq_restore(flags);
+        return retval;
+}
+
+static __inline__ unsigned long xchg_u8(volatile unsigned char * m, unsigned long val)
+{
+        unsigned long flags, retval;
+
+        local_irq_save(flags);
+        retval = *m;
+        *m = val & 0xff;
+        local_irq_restore(flags);
+        return retval;
+}
+
+static __inline__ unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
+{
+        switch (size) {
+        case 4:
+                return xchg_u32(ptr, x);
+                break;
+        case 1:
+                return xchg_u8(ptr, x);
+                break;
+        }
+        __xchg_called_with_bad_pointer();
+        return x;
+}
+
+/* XXX
+ * disable hlt during certain critical i/o operations
+ */
+#define HAVE_DISABLE_HLT
+void disable_hlt(void);
+void enable_hlt(void);
+
+#define arch_align_stack(x) (x)
+
+#endif