mirror of https://github.com/ksherlock/mpw.git
142 lines
3.3 KiB
C++
142 lines
3.3 KiB
C++
/*
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* Copyright (c) 2015, Kelvin W Sherlock
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY 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 THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <stdlib.h>
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#include <cpu/defs.h>
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#include <cpu/CpuModule.h>
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#include "os.h"
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#include "toolbox.h"
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using ToolBox::Log;
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namespace OS {
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uint16_t SwapInstructionCache()
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{
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// FUNCTION SwapInstructionCache (cacheEnable: Boolean): Boolean;
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// boolean value sent/returned via a0.
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// c.f. mpw DumpObj -m SWAPINSTRUCTIONCACHE Interface.o
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uint16_t cacheEnable = cpuGetAReg(0) & 0xff;
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Log(" SwapInstructionCache(%02x)\n", cacheEnable);
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cpuSetAReg(0, 0);
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return 0;
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}
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uint16_t FlushInstructionCache()
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{
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// PROCEDURE FlushInstructionCache;
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Log(" FlushInstructionCache()\n");
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return 0;
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}
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uint16_t SwapDataCache()
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{
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// FUNCTION SwapDataCache (cacheEnable: Boolean): Boolean;
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// boolean value sent/returned via a0.
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// c.f. mpw DumpObj -m SWAPDATACACHE Interface.o
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uint16_t cacheEnable = cpuGetAReg(0) & 0xff;
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Log(" SwapDataCache(%02x)\n", cacheEnable);
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cpuSetAReg(0, 0);
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return 0;
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}
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uint16_t FlushDataCache()
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{
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// PROCEDURE FlushDataCache;
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Log(" FlushDataCache()\n");
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return 0;
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}
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uint16_t FlushCodeCacheRange()
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{
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// FUNCTION FlushCodeCacheRange (address: UNIV Ptr; count: LongInt): OSErr;
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uint32_t address = cpuGetAReg(0);
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uint32_t count = cpuGetAReg(1);
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Log(" FlushCodeCacheRange(%08x, %08x)\n", address, count);
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return 0;
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}
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uint16_t FlushCodeCache(uint16_t trap)
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{
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// PROCEDURE FlushCodeCache;
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Log("%04x FlushCodeCache()\n", trap);
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return 0;
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}
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uint16_t HWPriv(uint16_t trap)
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{
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uint16_t selector;
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uint16_t d0 = 0;
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selector = cpuGetDReg(0) & 0xffff;
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Log("%04x HWTrap(%04x)\n", trap, selector);
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switch(selector)
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{
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case 0x0000:
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d0 = SwapInstructionCache();
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break;
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case 0x0001:
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d0 = FlushInstructionCache();
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break;
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case 0x0002:
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d0 = SwapDataCache();
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break;
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case 0x0003:
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d0 = FlushDataCache();
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break;
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case 0x0009:
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d0 = FlushCodeCacheRange();
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break;
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default:
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fprintf(stderr, "HWTrap selector %04x not yet supported\n", selector);
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exit(1);
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}
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return d0;
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}
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}
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