From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 arch/frv/include/asm/processor.h | 127 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 arch/frv/include/asm/processor.h

(limited to 'arch/frv/include/asm/processor.h')

diff --git a/arch/frv/include/asm/processor.h b/arch/frv/include/asm/processor.h
new file mode 100644
index 000000000..ae8d423e7
--- /dev/null
+++ b/arch/frv/include/asm/processor.h
@@ -0,0 +1,127 @@
+/* processor.h: FRV processor definitions
+ *
+ * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#ifndef _ASM_PROCESSOR_H
+#define _ASM_PROCESSOR_H
+
+#include <asm/mem-layout.h>
+
+#ifndef __ASSEMBLY__
+/*
+ * Default implementation of macro that returns current
+ * instruction pointer ("program counter").
+ */
+#define current_text_addr() ({ __label__ _l; _l: &&_l;})
+
+#include <linux/compiler.h>
+#include <linux/linkage.h>
+#include <asm/sections.h>
+#include <asm/segment.h>
+#include <asm/fpu.h>
+#include <asm/registers.h>
+#include <asm/ptrace.h>
+#include <asm/current.h>
+#include <asm/cache.h>
+
+/* Forward declaration, a strange C thing */
+struct task_struct;
+
+/*
+ * Bus types
+ */
+#define EISA_bus 0
+
+struct thread_struct {
+	struct pt_regs		*frame;		/* [GR28] exception frame ptr for this thread */
+	struct task_struct	*curr;		/* [GR29] current pointer for this thread */
+	unsigned long		sp;		/* [GR1 ] kernel stack pointer */
+	unsigned long		fp;		/* [GR2 ] kernel frame pointer */
+	unsigned long		lr;		/* link register */
+	unsigned long		pc;		/* program counter */
+	unsigned long		gr[12];		/* [GR16-GR27] */
+	unsigned long		sched_lr;	/* LR from schedule() */
+
+	union {
+		struct pt_regs		*frame0;	/* top (user) stack frame */
+		struct user_context	*user;		/* userspace context */
+	};
+} __attribute__((aligned(8)));
+
+extern struct pt_regs *__kernel_frame0_ptr;
+extern struct task_struct *__kernel_current_task;
+
+#endif
+
+#ifndef __ASSEMBLY__
+#define INIT_THREAD_FRAME0 \
+	((struct pt_regs *) \
+	(sizeof(init_stack) + (unsigned long) init_stack - sizeof(struct user_context)))
+
+#define INIT_THREAD {				\
+	NULL,					\
+	(struct task_struct *) init_stack,	\
+	0, 0, 0, 0,				\
+	{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	\
+	0,					\
+	{ INIT_THREAD_FRAME0 },			\
+}
+
+/*
+ * do necessary setup to start up a newly executed thread.
+ */
+#define start_thread(_regs, _pc, _usp)			\
+do {							\
+	_regs->pc	= (_pc);			\
+	_regs->psr	&= ~PSR_S;			\
+	_regs->sp	= (_usp);			\
+} while(0)
+
+/* Free all resources held by a thread. */
+static inline void release_thread(struct task_struct *dead_task)
+{
+}
+
+extern asmlinkage void save_user_regs(struct user_context *target);
+extern asmlinkage void *restore_user_regs(const struct user_context *target, ...);
+
+#define copy_segments(tsk, mm)		do { } while (0)
+#define release_segments(mm)		do { } while (0)
+#define forget_segments()		do { } while (0)
+
+/*
+ * Free current thread data structures etc..
+ */
+static inline void exit_thread(void)
+{
+}
+
+/*
+ * Return saved PC of a blocked thread.
+ */
+extern unsigned long thread_saved_pc(struct task_struct *tsk);
+
+unsigned long get_wchan(struct task_struct *p);
+
+#define	KSTK_EIP(tsk)	((tsk)->thread.frame0->pc)
+#define	KSTK_ESP(tsk)	((tsk)->thread.frame0->sp)
+
+#define cpu_relax() barrier()
+#define cpu_relax_lowlatency() cpu_relax()
+
+/* data cache prefetch */
+#define ARCH_HAS_PREFETCH
+static inline void prefetch(const void *x)
+{
+	asm volatile("dcpl %0,gr0,#0" : : "r"(x));
+}
+
+#endif /* __ASSEMBLY__ */
+#endif /* _ASM_PROCESSOR_H */
-- 
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