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/*
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 * Copyright (c) 2005 Ondrej Palkovsky
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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 KERN_amd64_CONTEXT_OFFSET_H_
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#define KERN_amd64_CONTEXT_OFFSET_H_
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#define OFFSET_SP  0x0
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#define OFFSET_PC  0x8
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#define OFFSET_RBX 0x10
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#define OFFSET_RBP 0x18
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#define OFFSET_R12 0x20
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#define OFFSET_R13 0x28
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#define OFFSET_R14 0x30
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#define OFFSET_R15 0x38
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#ifdef KERNEL
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# define OFFSET_IPL 0x40
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#else
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# define OFFSET_TLS 0x40
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#endif
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#ifdef __ASM__
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# ctx: address of the structure with saved context 
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# pc: return address
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.macro CONTEXT_SAVE_ARCH_CORE ctx:req pc:req
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    movq \pc, OFFSET_PC(\ctx)
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    movq %rsp, OFFSET_SP(\ctx)
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    movq %rbx, OFFSET_RBX(\ctx)
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    movq %rbp, OFFSET_RBP(\ctx)
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    movq %r12, OFFSET_R12(\ctx)
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    movq %r13, OFFSET_R13(\ctx)
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    movq %r14, OFFSET_R14(\ctx)
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    movq %r15, OFFSET_R15(\ctx)
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.endm
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# ctx: address of the structure with saved context 
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.macro CONTEXT_RESTORE_ARCH_CORE ctx:req pc:req
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    movq OFFSET_R15(\ctx), %r15
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    movq OFFSET_R14(\ctx), %r14
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    movq OFFSET_R13(\ctx), %r13
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    movq OFFSET_R12(\ctx), %r12
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    movq OFFSET_RBP(\ctx), %rbp
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    movq OFFSET_RBX(\ctx), %rbx
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    movq OFFSET_SP(\ctx), %rsp   # ctx->sp -> %rsp
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    movq OFFSET_PC(\ctx), \pc
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.endm
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#endif
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#endif