/* 
 * Copyright 2010 Stefan Lankes, Chair for Operating Systems,
 *                               RWTH Aachen University
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * This file is part of MetalSVM.
 */

#ifndef __ARCH_PROCESSOR_H__
#define __ARCH_PROCESSOR_H__

#include <metalsvm/stddef.h>
#ifdef CONFIG_PCI
#include <asm/pci.h>
#endif
#ifdef CONFIG_ROCKCREEK
#include <asm/scc.h>
#endif

#ifdef __cplusplus
extern "C" {
#endif

static inline uint64_t rdtsc()
{
	uint64_t x;
	asm volatile ("rdtsc" : "=A" (x));
	return x;
}

#define get_return_value(ret) 	asm volatile ("movl %%eax, %0" : "=r"(ret))

#define NOP1 	asm  volatile ("nop")
#define NOP2    asm  volatile ("nop;nop")
#define NOP4    asm  volatile ("nop;nop;nop;nop")
#define NOP8    asm  volatile ("nop;nop;nop;nop;nop;nop;nop;nop")

void gdt_install(void);

inline static int system_init(void)
{
#ifdef CONFIG_ROCKCREEK
	scc_init();
#endif
	gdt_install();
#ifdef CONFIG_PCI
	pci_init();
#endif
	return 0;
}

#ifdef __cplusplus
}
#endif

#endif