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  • Committer: Bazaar Package Importer
  • Author(s): Bastian Blank
  • Date: 2010-05-06 15:47:38 UTC
  • mto: (1.3.1) (15.1.1 sid) (4.1.1 experimental)
  • mto: This revision was merged to the branch mainline in revision 3.
  • Revision ID: james.westby@ubuntu.com-20100506154738-agoz0rlafrh1fnq7
Tags: upstream-4.0.0
Import upstream version 4.0.0

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tools/firmware/hvmloader/hypercall.h
 
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/******************************************************************************
 
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 * hypercall.h
 
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 * 
 
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 * Copyright (c) 2002-2006, K A Fraser
 
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 * 
 
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 * This program is free software; you can redistribute it and/or
 
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 * modify it under the terms of the GNU General Public License version 2
 
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 * as published by the Free Software Foundation; or, when distributed
 
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 * separately from the Linux kernel or incorporated into other
 
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 * software packages, subject to the following license:
 
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 * 
 
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
 
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 * of this source file (the "Software"), to deal in the Software without
 
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 * restriction, including without limitation the rights to use, copy, modify,
 
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 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
 
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 * and to permit persons to whom the Software is furnished to do so, subject to
 
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 * the following conditions:
 
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 * 
 
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 * The above copyright notice and this permission notice shall be included in
 
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 * all copies or substantial portions of the Software.
 
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 * 
 
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 
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 * IN THE SOFTWARE.
 
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 */
 
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#ifndef __HVMLOADER_HYPERCALL_H__
 
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#define __HVMLOADER_HYPERCALL_H__
 
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#include <stdint.h>
 
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#include <xen/xen.h>
 
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#include "config.h"
 
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/*
 
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 * NB. Hypercall address needs to be relative to a linkage symbol for
 
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 * some version of ld to relocate the relative calls properly.
 
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 */
 
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#define hypercall_pa "_start - " STR(HYPERCALL_PHYSICAL_ADDRESS)
 
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#define _hypercall0(type, name)                                         \
 
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({                                                                      \
 
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        long __res;                                                     \
 
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        asm volatile (                                                  \
 
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                "call "hypercall_pa" + " STR(__HYPERVISOR_##name * 32)  \
 
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                : "=a" (__res)                                          \
 
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                :                                                       \
 
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                : "memory" );                                           \
 
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        (type)__res;                                                    \
 
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})
 
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#define _hypercall1(type, name, a1)                                     \
 
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({                                                                      \
 
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        long __res, __ign1;                                             \
 
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        asm volatile (                                                  \
 
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                "call "hypercall_pa" + " STR(__HYPERVISOR_##name * 32)  \
 
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                : "=a" (__res), "=b" (__ign1)                           \
 
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                : "1" ((long)(a1))                                      \
 
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                : "memory" );                                           \
 
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        (type)__res;                                                    \
 
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})
 
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#define _hypercall2(type, name, a1, a2)                                 \
 
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({                                                                      \
 
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        long __res, __ign1, __ign2;                                     \
 
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        asm volatile (                                                  \
 
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                "call "hypercall_pa" + " STR(__HYPERVISOR_##name * 32)  \
 
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                : "=a" (__res), "=b" (__ign1), "=c" (__ign2)            \
 
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                : "1" ((long)(a1)), "2" ((long)(a2))                    \
 
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                : "memory" );                                           \
 
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        (type)__res;                                                    \
 
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})
 
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#define _hypercall3(type, name, a1, a2, a3)                             \
 
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({                                                                      \
 
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        long __res, __ign1, __ign2, __ign3;                             \
 
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        asm volatile (                                                  \
 
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                "call "hypercall_pa" + " STR(__HYPERVISOR_##name * 32)  \
 
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                : "=a" (__res), "=b" (__ign1), "=c" (__ign2),           \
 
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                "=d" (__ign3)                                           \
 
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                : "1" ((long)(a1)), "2" ((long)(a2)),                   \
 
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                "3" ((long)(a3))                                        \
 
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                : "memory" );                                           \
 
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        (type)__res;                                                    \
 
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})
 
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#define _hypercall4(type, name, a1, a2, a3, a4)                         \
 
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({                                                                      \
 
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        long __res, __ign1, __ign2, __ign3, __ign4;                     \
 
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        asm volatile (                                                  \
 
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                "call "hypercall_pa" + " STR(__HYPERVISOR_##name * 32)  \
 
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                : "=a" (__res), "=b" (__ign1), "=c" (__ign2),           \
 
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                "=d" (__ign3), "=S" (__ign4)                            \
 
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                : "1" ((long)(a1)), "2" ((long)(a2)),                   \
 
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                "3" ((long)(a3)), "4" ((long)(a4))                      \
 
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                : "memory" );                                           \
 
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        (type)__res;                                                    \
 
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})
 
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#define _hypercall5(type, name, a1, a2, a3, a4, a5)                     \
 
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({                                                                      \
 
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        long __res, __ign1, __ign2, __ign3, __ign4, __ign5;             \
 
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        asm volatile (                                                  \
 
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                "call "hypercall_pa" + " STR(__HYPERVISOR_##name * 32)  \
 
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                : "=a" (__res), "=b" (__ign1), "=c" (__ign2),           \
 
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                "=d" (__ign3), "=S" (__ign4), "=D" (__ign5)             \
 
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                : "1" ((long)(a1)), "2" ((long)(a2)),                   \
 
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                "3" ((long)(a3)), "4" ((long)(a4)),                     \
 
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                "5" ((long)(a5))                                        \
 
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                : "memory" );                                           \
 
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        (type)__res;                                                    \
 
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})
 
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117
static inline int
 
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hypercall_sched_op(
 
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        int cmd, void *arg)
 
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{
 
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        return _hypercall2(int, sched_op, cmd, arg);
 
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}
 
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static inline int
 
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hypercall_memory_op(
 
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        unsigned int cmd, void *arg)
 
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{
 
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        return _hypercall2(int, memory_op, cmd, arg);
 
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}
 
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static inline int
 
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hypercall_multicall(
 
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        void *call_list, int nr_calls)
 
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{
 
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        return _hypercall2(int, multicall, call_list, nr_calls);
 
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}
 
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138
static inline int
 
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hypercall_event_channel_op(
 
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        int cmd, void *arg)
 
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{
 
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        return _hypercall2(int, event_channel_op, cmd, arg);
 
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}
 
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static inline int
 
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hypercall_xen_version(
 
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        int cmd, void *arg)
 
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{
 
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        return _hypercall2(int, xen_version, cmd, arg);
 
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}
 
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static inline int
 
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hypercall_console_io(
 
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        int cmd, int count, char *str)
 
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{
 
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        return _hypercall3(int, console_io, cmd, count, str);
 
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}
 
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static inline int
 
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hypercall_vm_assist(
 
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        unsigned int cmd, unsigned int type)
 
162
{
 
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        return _hypercall2(int, vm_assist, cmd, type);
 
164
}
 
165
 
 
166
static inline int
 
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hypercall_vcpu_op(
 
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        int cmd, int vcpuid, void *extra_args)
 
169
{
 
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        return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args);
 
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}
 
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173
static inline int
 
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hypercall_hvm_op(
 
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        int cmd, void *arg)
 
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{
 
177
        return _hypercall2(int, hvm_op, cmd, arg);
 
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}
 
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#endif /* __HVMLOADER_HYPERCALL_H__ */