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173 jermar 1 
/*
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 * Copyright (C) 2005 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#ifndef __ia64_ASM_H__
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#define __ia64_ASM_H__
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#include <arch/types.h>
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#include <config.h>
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/** Return base address of current stack
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 *
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 * Return the base address of the current stack.
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 * The stack is assumed to be STACK_SIZE long.
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 * The stack must start on page boundary.
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 */
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static inline __address get_stack_base(void)
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{
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    __u64 v;
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    __asm__ volatile ("and %0 = %1, r12" : "=r" (v) : "r" (~(STACK_SIZE-1)));
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    return v;
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}
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/** Read IVR (External Interrupt Vector Register)
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 *
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 * @return Highest priority, pending, unmasked external interrupt vector.
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 */
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static inline __u8 read_ivr(void)
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{
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    __u64 v;
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    __asm__ volatile ("mov %0 = cr65\n" : "=r" (v));
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    return (__u8) (v & 0xf);
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}
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void cpu_sleep(void);
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void asm_delay_loop(__u32 t);
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#define set_shadow_register(reg,val) {__u64 v = val; __asm__  volatile("mov r15 = %0;;\n""bsw.0;;\n""mov "   #reg   " = r15;;\n""bsw.1;;\n" : : "r" (v) : "r15" ); }
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#define get_shadow_register(reg,val) {__u64 v ; __asm__  volatile("bsw.0;;\n" "mov r15 = r" #reg ";;\n" "bsw.1;;\n" "mov %0 = r15;;\n" : "=r" (v) : : "r15" ); val=v; }
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#define get_control_register(reg,val) {__u64 v ; __asm__  volatile("mov r15 = cr" #reg ";;\n" "mov %0 = r15;;\n" : "=r" (v) : : "r15" ); val=v; }
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#define get_aplication_register(reg,val) {__u64 v ; __asm__  volatile("mov r15 = ar" #reg ";;\n" "mov %0 = r15;;\n" : "=r" (v) : : "r15" ); val=v; }
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#define get_psr(val) {__u64 v ; __asm__  volatile("mov r15 = psr;;\n" "mov %0 = r15;;\n" : "=r" (v) : : "r15" ); val=v; }
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void cpu_halt(void);
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#endif