mpw/toolbox/os_hwpriv.cpp
2015-01-23 11:01:57 -05:00

141 lines
3.4 KiB
C++

/*
* Copyright (c) 2015, Kelvin W Sherlock
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <stdlib.h>
#include <cpu/defs.h>
#include <cpu/CpuModule.h>
#include "os.h"
#include "toolbox.h"
using ToolBox::Log;
namespace OS {
uint16_t SwapInstructionCache()
{
// FUNCTION SwapInstructionCache (cacheEnable: Boolean): Boolean;
// boolean value sent/returned via a0.
// c.f. mpw DumpObj -m SWAPINSTRUCTIONCACHE Interface.o
uint16_t cacheEnable = cpuGetAReg(0) & 0xff;
Log(" SwapInstructionCache(%02x)\n", cacheEnable);
cpuSetAReg(0, 0);
return 0;
}
uint16_t FlushInstructionCache()
{
// PROCEDURE FlushInstructionCache;
Log(" FlushInstructionCache()\n");
return 0;
}
uint16_t SwapDataCache()
{
// FUNCTION SwapDataCache (cacheEnable: Boolean): Boolean;
// boolean value sent/returned via a0.
// c.f. mpw DumpObj -m SWAPDATACACHE Interface.o
uint16_t cacheEnable = cpuGetAReg(0) & 0xff;
Log(" SwapDataCache(%02x)\n", cacheEnable);
cpuSetAReg(0, 0);
return 0;
}
uint16_t FlushDataCache()
{
// PROCEDURE FlushDataCache;
Log(" FlushDataCache()\n");
return 0;
}
uint16_t FlushCodeCacheRange()
{
// FUNCTION FlushCodeCacheRange (address: UNIV Ptr; count: LongInt): OSErr;
uint32_t address = cpuGetAReg(0);
uint32_t count = cpuGetAReg(1);
Log(" FlushCodeCacheRange(%08x, %08x)\n", address, count);
return 0;
}
uint16_t FlushCodeCache(uint16_t trap)
{
// PROCEDURE FlushCodeCache;
Log("%04x FlushCodeCache()\n", trap);
return 0;
}
uint16_t HWPriv(uint16_t trap)
{
uint16_t selector;
uint16_t d0 = 0;
selector = cpuGetDReg(0) & 0xffff;
Log("%04x HWTrap(%04x)\n", trap, selector);
switch(selector)
{
case 0x0000:
d0 = SwapInstructionCache();
break;
case 0x0001:
d0 = FlushInstructionCache();
break;
case 0x0002:
d0 = SwapDataCache();
break;
case 0x0003:
d0 = FlushDataCache();
break;
case 0x0009:
d0 = FlushCodeCacheRange();
break;
default:
fprintf(stderr, "HWTrap selector %04x not yet supported\n", selector);
exit(1);
}
return d0;
}
}