Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / cris / include / asm / processor.h

diff --git a/kernel/arch/cris/include/asm/processor.h b/kernel/arch/cris/include/asm/processor.h
new file mode 100644 (file)
index 0000000..862126b
--- /dev/null
+++ b/kernel/arch/cris/include/asm/processor.h
@@ -0,0 +1,70 @@
+/*
+ * include/asm-cris/processor.h
+ *
+ * Copyright (C) 2000, 2001 Axis Communications AB
+ *
+ * Authors:         Bjorn Wesen        Initial version
+ *
+ */
+
+#ifndef __ASM_CRIS_PROCESSOR_H
+#define __ASM_CRIS_PROCESSOR_H
+
+#include <asm/page.h>
+#include <asm/ptrace.h>
+#include <arch/processor.h>
+#include <arch/system.h>
+
+struct task_struct;
+
+#define STACK_TOP      TASK_SIZE
+#define STACK_TOP_MAX  STACK_TOP
+
+/* This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define TASK_UNMAPPED_BASE      (PAGE_ALIGN(TASK_SIZE / 3))
+
+/* THREAD_SIZE is the size of the thread_info/kernel_stack combo.
+ * normally, the stack is found by doing something like p + THREAD_SIZE
+ * in CRIS, a page is 8192 bytes, which seems like a sane size
+ */
+#define THREAD_SIZE       PAGE_SIZE
+#define THREAD_SIZE_ORDER (0)
+
+/*
+ * At user->kernel entry, the pt_regs struct is stacked on the top of the kernel-stack.
+ * This macro allows us to find those regs for a task.
+ * Notice that subsequent pt_regs stackings, like recursive interrupts occurring while
+ * we're in the kernel, won't affect this - only the first user->kernel transition
+ * registers are reached by this.
+ */
+
+#define user_regs(thread_info) (((struct pt_regs *)((unsigned long)(thread_info) + THREAD_SIZE)) - 1)
+
+/*
+ * Dito but for the currently running task
+ */
+
+#define task_pt_regs(task) user_regs(task_thread_info(task))
+
+unsigned long get_wchan(struct task_struct *p);
+
+#define KSTK_ESP(tsk)   ((tsk) == current ? rdusp() : (tsk)->thread.usp)
+
+extern unsigned long thread_saved_pc(struct task_struct *tsk);
+
+/* Free all resources held by a thread. */
+static inline void release_thread(struct task_struct *dead_task)
+{
+        /* Nothing needs to be done.  */
+}
+
+#define init_stack      (init_thread_union.stack)
+
+#define cpu_relax()     barrier()
+#define cpu_relax_lowlatency() cpu_relax()
+
+void default_idle(void);
+
+#endif /* __ASM_CRIS_PROCESSOR_H */