/* $Id: stack.hh,v 1.2 2008-04-20 16:35:53 sybreon Exp $
|
/* $Id: stack.hh,v 1.3 2008-04-23 14:19:39 sybreon Exp $
|
**
|
**
|
** AEMB2 HI-PERFORMANCE CPU
|
** AEMB2 HI-PERFORMANCE CPU
|
** Copyright (C) 2004-2007 Shawn Tan Ser Ngiap
|
** Copyright (C) 2004-2007 Shawn Tan Ser Ngiap
|
**
|
**
|
** This file is part of AEMB.
|
** This file is part of AEMB.
|
**
|
**
|
** AEMB is free software: you can redistribute it and/or modify it
|
** AEMB is free software: you can redistribute it and/or modify it
|
** under the terms of the GNU Lesser General Public License as
|
** under the terms of the GNU Lesser General Public License as
|
** published by the Free Software Foundation, either version 3 of the
|
** published by the Free Software Foundation, either version 3 of the
|
** License, or (at your option) any later version.
|
** License, or (at your option) any later version.
|
**
|
**
|
** AEMB is distributed in the hope that it will be useful, but WITHOUT
|
** AEMB is distributed in the hope that it will be useful, but WITHOUT
|
** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
** or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
|
** or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
|
** Public License for more details.
|
** Public License for more details.
|
**
|
**
|
** You should have received a copy of the GNU Lesser General Public
|
** You should have received a copy of the GNU Lesser General Public
|
** License along with AEMB. If not, see .
|
** License along with AEMB. If not, see .
|
*/
|
*/
|
|
|
/**
|
/**
|
Basic stack related functions
|
Basic stack related functions
|
@file stack.hh
|
@file stack.hh
|
*/
|
*/
|
|
|
#ifndef AEMB_STACK_HH
|
#ifndef AEMB_STACK_HH
|
#define AEMB_STACK_HH
|
#define AEMB_STACK_HH
|
|
|
#ifdef __cplusplus
|
#ifdef __cplusplus
|
namespace aemb {
|
namespace aemb {
|
#endif
|
#endif
|
|
|
/**
|
/**
|
Reads the size of the memory space allocated for the stack in bytes.
|
Reads the size of the memory space allocated for the stack in bytes.
|
@return size of stack
|
@return size of stack
|
*/
|
*/
|
|
|
inline int getStackSize()
|
inline int getStackSize()
|
{
|
{
|
int tmp;
|
int tmp;
|
asm ("la %0, r0, _STACK_SIZE":"=r"(tmp));
|
asm ("la %0, r0, _STACK_SIZE":"=r"(tmp));
|
return tmp;
|
return tmp;
|
}
|
}
|
|
|
/**
|
/**
|
Reads the end of the memory space allocated for the stack.
|
Reads the end of the memory space allocated for the stack.
|
@return end of stack
|
@return end of stack
|
*/
|
*/
|
|
|
inline int getStackEnd()
|
inline int getStackEnd()
|
{
|
{
|
int tmp;
|
int tmp;
|
asm ("la %0, r0, _stack_end":"=r"(tmp));
|
asm ("la %0, r0, _stack_end":"=r"(tmp));
|
return tmp;
|
return tmp;
|
}
|
}
|
|
|
/**
|
/**
|
Reads the top of the memory space allocated for the stack.
|
Reads the top of the memory space allocated for the stack.
|
@return top of stack
|
@return top of stack
|
*/
|
*/
|
|
|
inline int getStackTop()
|
inline int getStackTop()
|
{
|
{
|
int tmp;
|
int tmp;
|
asm ("la %0, r0, _stack":"=r"(tmp));
|
asm ("la %0, r0, _stack":"=r"(tmp));
|
return tmp;
|
return tmp;
|
}
|
}
|
|
|
/**
|
/**
|
Reads register R1 which is the designated stack pointer.
|
Reads register R1 which is the designated stack pointer.
|
@return stack pointer
|
@return stack pointer
|
*/
|
*/
|
|
|
inline int getStack()
|
inline int getStack()
|
{
|
{
|
int tmp;
|
int tmp;
|
asm ("or %0, r0, r1":"=r"(tmp));
|
asm ("addk %0, r0, r1":"=r"(tmp));
|
return tmp;
|
return tmp;
|
}
|
}
|
|
|
/**
|
/**
|
Sets register R1 to the new stack pointer.
|
Sets register R1 to the new stack pointer.
|
@param stk new stack pointer
|
@param stk new stack pointer
|
*/
|
*/
|
|
|
inline void setStack(int stk)
|
inline void setStack(int stk)
|
{
|
{
|
asm ("or r1, r0, %0"::"r"(stk));
|
asm ("addk r1, r0, %0"::"r"(stk));
|
}
|
}
|
|
|
#ifdef __cplusplus
|
#ifdef __cplusplus
|
}
|
}
|
#endif
|
#endif
|
|
|
#endif
|
#endif
|
|
|
/*
|
/*
|
$Log: not supported by cvs2svn $
|
$Log: not supported by cvs2svn $
|
|
Revision 1.2 2008/04/20 16:35:53 sybreon
|
|
Added C/C++ compatible #ifdef statements
|
|
|
Revision 1.1 2008/04/09 19:48:37 sybreon
|
Revision 1.1 2008/04/09 19:48:37 sybreon
|
Added new C++ files
|
Added new C++ files
|
|
|
*/
|
*/
|
|
|