/* $Id: libaemb.h,v 1.3 2007-12-16 03:26:37 sybreon Exp $
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/* $Id: libaemb.h,v 1.3 2007-12-16 03:26:37 sybreon Exp $
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**
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**
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** AEMB2 CUSTOM LIBRARY
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** AEMB2 CUSTOM LIBRARY
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**
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**
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** Copyright (C) 2004-2007 Shawn Tan Ser Ngiap <shawn.tan@aeste.net>
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** Copyright (C) 2004-2007 Shawn Tan Ser Ngiap <shawn.tan@aeste.net>
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**
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**
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** This file is part of AEMB.
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** This file is part of AEMB.
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**
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**
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** AEMB is free software: you can redistribute it and/or modify it
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** AEMB is free software: you can redistribute it and/or modify it
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** under the terms of the GNU Lesser General Public License as
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** under the terms of the GNU Lesser General Public License as
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** published by the Free Software Foundation, either version 3 of the
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** published by the Free Software Foundation, either version 3 of the
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** License, or (at your option) any later version.
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** License, or (at your option) any later version.
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**
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**
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** AEMB is distributed in the hope that it will be useful, but WITHOUT
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** AEMB is distributed in the hope that it will be useful, but WITHOUT
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** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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** or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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** or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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** Public License for more details.
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** Public License for more details.
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**
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**
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** You should have received a copy of the GNU Lesser General Public
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** You should have received a copy of the GNU Lesser General Public
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** License along with AEMB. If not, see <http:**www.gnu.org/licenses/>.
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** License along with AEMB. If not, see <http:**www.gnu.org/licenses/>.
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*/
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*/
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#ifndef LIBAEMB_H
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#ifndef LIBAEMB_H
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#define LIBAEMB_H
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#define LIBAEMB_H
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#define AEMB_TXE 0x0100
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#define AEMB_TXE 0x0100
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#define AEMB_TXP 0x0400
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#define AEMB_TXP 0x0400
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#define AEMB_TX0 0x0300
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#define AEMB_TX0 0x0300
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#define AEMB_TX1 0x0700
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#define AEMB_TX1 0x0700
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#define AEMB_MSK 0x0F00
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#define AEMB_MSK 0x0F00
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#define AEMB_BIP 0x0008
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#define AEMB_BIP 0x0008
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#define AEMB_CCC 0x0004
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#define AEMB_CCC 0x0004
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#define AEMB_ITE 0x0002
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#define AEMB_ITE 0x0002
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#define AEMB_BLE 0x0001
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#define AEMB_BLE 0x0001
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// Linker symbols
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// Linker symbols
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extern void* _STACK_SIZE;
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extern void* _STACK_SIZE;
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extern void* _stack_end;
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extern void* _stack_end;
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void aemb_hook_init () asm ("_program_init");
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void aemb_hook_init () asm ("_program_init");
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void aemb_hook_clean () asm ("_program_clean");
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void aemb_hook_clean () asm ("_program_clean");
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inline void aemb_enable_interrupt ();
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inline void aemb_enable_interrupt ();
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inline void aemb_disable_interrupt ();
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inline void aemb_disable_interrupt ();
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inline int aemb_isthread1();
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inline int aemb_isthread1();
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inline int aemb_isthread0();
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inline int aemb_isthread0();
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inline int aemb_isthreaded();
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inline int aemb_isthreaded();
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/*!
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/*!
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* Assembly macro to enable MSR_IE
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* Assembly macro to enable MSR_IE
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*/
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*/
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void aemb_enable_interrupt ()
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void aemb_enable_interrupt ()
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{
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{
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int msr, tmp;
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int msr, tmp;
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asm volatile ("mfs %0, rmsr;"
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asm volatile ("mfs %0, rmsr;"
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"ori %1, %0, 0x02;"
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"ori %1, %0, 0x02;"
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"mts rmsr, %1;"
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"mts rmsr, %1;"
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: "=r"(msr)
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: "=r"(msr)
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: "r" (tmp)
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: "r" (tmp)
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);
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);
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}
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}
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/*!
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/*!
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* Assembly macro to disable MSR_IE
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* Assembly macro to disable MSR_IE
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*/
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*/
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void aemb_disable_interrupt ()
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void aemb_disable_interrupt ()
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{
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{
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int msr, tmp;
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int msr, tmp;
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asm volatile ("mfs %0, rmsr;"
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asm volatile ("mfs %0, rmsr;"
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"andi %1, %0, 0xFD;"
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"andi %1, %0, 0xFD;"
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"mts rmsr, %1;"
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"mts rmsr, %1;"
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: "=r"(msr)
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: "=r"(msr)
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: "r" (tmp)
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: "r" (tmp)
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);
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);
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}
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}
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/*!
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/*!
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* Bootstrap Hook Override
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* Bootstrap Hook Override
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*/
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*/
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void aemb_hook_init ()
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void aemb_hook_init ()
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{
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{
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int msr, tmp;
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int msr, tmp;
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int stk_end, stk_siz;
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int stk_end, stk_siz;
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/*
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/*
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// Check to see if hardware threads are enabled
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// Check to see if hardware threads are enabled
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if (((msr & AEMB_TXE) != AEMB_TXE) ||
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if (((msr & AEMB_TXE) != AEMB_TXE) ||
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// Check to see if second thread is started
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// Check to see if second thread is started
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((msr & AEMB_TX1) == AEMB_TX1)) return;
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((msr & AEMB_TX1) == AEMB_TX1)) return;
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*/
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*/
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//return;
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//return;
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asm volatile ("mfs %0, rmsr;"
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asm volatile ("mfs %0, rmsr;"
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// Check for BIP
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// Check for BIP
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"andi %1, %0, %5;"
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"andi %1, %0, %5;"
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"xori %1, %1, %5;"
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"xori %1, %1, %5;"
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"beqi %1, 44;"
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"beqi %1, 44;"
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// Check for TXE
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// Check for TXE
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"andi %1, %0, %2;"
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"andi %1, %0, %2;"
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"xori %1, %1, %2;"
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"xori %1, %1, %2;"
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"bnei %1, 36;"
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"bnei %1, 36;"
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// Check for TX1
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// Check for TX1
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"andi %1, %0, %3;"
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"andi %1, %0, %3;"
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"xori %1, %1, %3;"
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"xori %1, %1, %3;"
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"beqi %1, 20;"
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"beqi %1, 20;"
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// reallocate stack pointer for T0
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// reallocate stack pointer for T0
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"ori %1, r0, %4;"
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"ori %1, r0, %4;"
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"sra %1, %1;"
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"sra %1, %1;"
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"rsubk r1, %1, r1;"
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"rsubk r1, %1, r1;"
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// reboot the machine
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// reboot the machine
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//"brki r0, _crtinit;"
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//"brki r0, _crtinit;"
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"brid 0;"
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"brid 0;"
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"nop;"
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"nop;"
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// clear BIP
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// clear BIP
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"andni %1, %0, %5;"
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"andni %1, %0, %5;"
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"mts rmsr, %1;"
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"mts rmsr, %1;"
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:"=r"(msr), "=r"(tmp)
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:"=r"(msr), "=r"(tmp)
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:"i"(AEMB_TXE), "i"(AEMB_TX1), "i"(&_STACK_SIZE), "i"(AEMB_BIP)
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:"i"(AEMB_TXE), "i"(AEMB_TX1), "i"(&_STACK_SIZE), "i"(AEMB_BIP)
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);
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);
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}
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}
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/*!
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/*!
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Undo the changes made by programme init
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Undo the changes made by programme init
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*/
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*/
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void aemb_hook_clean ()
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void aemb_hook_clean ()
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{
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{
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int msr, tmp;
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int msr, tmp;
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int stk_end, stk_siz;
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int stk_end, stk_siz;
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/*
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/*
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// Check to see if hardware threads are enabled
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// Check to see if hardware threads are enabled
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if (((msr & AEMB_TXE) != AEMB_TXE) ||
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if (((msr & AEMB_TXE) != AEMB_TXE) ||
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// Check to see if second thread is started
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// Check to see if second thread is started
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((msr & AEMB_TX1) == AEMB_TX1)) return;
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((msr & AEMB_TX1) == AEMB_TX1)) return;
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*/
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*/
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return;
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return;
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asm volatile ("mfs %0, rmsr;"
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asm volatile ("mfs %0, rmsr;"
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"andi %1, %0, %2;"
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"andi %1, %0, %2;"
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"xori %1, %1, %2;"
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"xori %1, %1, %2;"
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"bnei %1, 28;"
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"bnei %1, 28;"
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"andi %1, %0, %3;"
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"andi %1, %0, %3;"
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"xori %1, %1, %3;"
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"xori %1, %1, %3;"
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"beqi %1, 16;"
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"beqi %1, 16;"
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// reallocate stack pointer for T0
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// reallocate stack pointer for T0
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"ori %1, r0, %4;"
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"ori %1, r0, %4;"
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"sra %1, %1;"
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"sra %1, %1;"
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"addk r1, %1, r1;"
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"addk r1, %1, r1;"
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:"=r"(msr), "=r"(tmp)
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:"=r"(msr), "=r"(tmp)
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:"i"(AEMB_TXE), "i"(AEMB_TX1), "i"(&_STACK_SIZE)
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:"i"(AEMB_TXE), "i"(AEMB_TX1), "i"(&_STACK_SIZE)
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);
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);
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}
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}
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/* Checks if it's T1, and returns 0 if true */
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/* Checks if it's T1, and returns 0 if true */
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int aemb_isthread1 ()
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int aemb_isthread1 ()
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{
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{
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int msr, tmp, res;
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int msr, tmp, res;
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asm volatile ("mfs %0, rmsr;"
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asm volatile ("mfs %0, rmsr;"
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"andi %1, %0, %3;"
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"andi %1, %0, %3;"
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"xori %1, %1, %3;"
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"xori %1, %1, %3;"
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:"=r"(msr), "=r"(tmp)
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:"=r"(msr), "=r"(tmp)
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:"i"(AEMB_TXE), "i"(AEMB_TXP)
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:"i"(AEMB_TXE), "i"(AEMB_TXP)
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);
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);
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return tmp;
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return tmp;
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}
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}
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/* Checks if it's T0, and returns 0 if true */
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/* Checks if it's T0, and returns 0 if true */
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int aemb_isthread0 ()
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int aemb_isthread0 ()
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{
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{
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int msr, tmp, res;
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int msr, tmp, res;
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asm volatile ("mfs %0, rmsr;"
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asm volatile ("mfs %0, rmsr;"
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"andi %1, %0, %3;"
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"andi %1, %0, %3;"
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"xori %1, %1, %2;"
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"xori %1, %1, %2;"
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:"=r"(msr), "=r"(tmp)
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:"=r"(msr), "=r"(tmp)
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:"i"(AEMB_TXP), "i"(AEMB_MSK)
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:"i"(AEMB_TXP), "i"(AEMB_MSK)
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);
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);
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return tmp;
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return tmp;
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}
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}
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/* Checks if TXE is available, and returns 0 if true */
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/* Checks if TXE is available, and returns 0 if true */
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int aemb_isthreaded ()
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int aemb_isthreaded ()
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{
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{
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int msr, tmp, res;
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int msr, tmp, res;
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asm volatile ("mfs %0, rmsr;"
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asm volatile ("mfs %0, rmsr;"
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"andi %1, %0, %2;"
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"andi %1, %0, %2;"
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"xori %1, %1, %2;"
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"xori %1, %1, %2;"
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:"=r"(msr), "=r"(tmp)
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:"=r"(msr), "=r"(tmp)
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:"i"(AEMB_TXE), "i"(AEMB_MSK)
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:"i"(AEMB_TXE), "i"(AEMB_MSK)
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);
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);
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return tmp;
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return tmp;
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}
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}
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#endif
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#endif
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/* $Log: not supported by cvs2svn $
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/* $Log: not supported by cvs2svn $
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/* Revision 1.1 2007/12/11 00:44:04 sybreon
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/* Revision 1.1 2007/12/11 00:44:04 sybreon
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/* initial import
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/* initial import
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/* */
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/* */
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