82 lines
2.2 KiB
ArmAsm
82 lines
2.2 KiB
ArmAsm
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/**
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* \file
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* <!--
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* This file is part of BeRTOS.
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*
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* Bertos is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* As a special exception, you may use this file as part of a free software
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* library without restriction. Specifically, if other files instantiate
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* templates or use macros or inline functions from this file, or you compile
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* this file and link it with other files to produce an executable, this
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* file does not by itself cause the resulting executable to be covered by
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* the GNU General Public License. This exception does not however
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* invalidate any other reasons why the executable file might be covered by
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* the GNU General Public License.
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*
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* Copyright 2004 Develer S.r.l. (http://www.develer.com/)
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* Copyright 1999, 2000, 2001 Bernie Innocenti <bernie@codewiz.org>
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* This file is part of DevLib - See devlib/README for information.
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* -->
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*
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* \author Bernie Innocenti <bernie@codewiz.org>
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*
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* \brief i386 context switch for WIN32
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*/
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!!!!!! THIS FILE HAS NOT BEEN REVISED FOR THE NEW SCHEDULER API !!!!!!
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__declspec(naked) void AsmSwitchContext(void * new_sp, void ** save_sp)
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{
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__asm
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{
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push eax
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push ebx
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push ecx
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push edx
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push esi
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push edi
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push ebp
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mov ebp,dword ptr [esp+24h] ; ebp <- save_sp
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mov dword ptr [ebp],esp ; *save_sp = esp
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mov esp,dword ptr [esp+20h] ; new_sp
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pop ebp
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pop edi
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pop esi
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pop edx
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pop ecx
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pop ebx
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pop eax
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ret
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}
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}
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__declspec(naked) void AsmReplaceContext(void * new_sp, void ** dummy)
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{
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__asm
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{
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mov esp,dword ptr [esp + 4] ; new_sp
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pop ebp
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pop edi
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pop esi
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pop edx
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pop ecx
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pop ebx
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pop eax
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ret
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}
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}
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