HWPriv OS Trap

test/makefile

@@ -24,7 +24,8 @@ LDFLAGS = -w -c 'MPS ' -t MPST \
 
 SCFLAGS = -p
 
-TARGETS = test_new_handle test_new_handle_2 test_new_pointer test_volumes test_createresfile
+TARGETS = test_new_handle test_new_handle_2 test_new_pointer test_volumes \
+	test_createresfile test_hwpriv
 
 all : $(TARGETS)
 

test/test_hwpriv.c

@@ -0,0 +1,30 @@
+#include <OSUtils.h>
+#include <stdio.h>
+
+
+int main(int argc, char **argv)
+{
+	(void)argc;
+	(void)argv;
+
+	// these are all nops in mpw.  Just verify it doesn't crash.
+
+	SwapInstructionCache(1);
+	SwapInstructionCache(0);
+
+	FlushInstructionCache();
+
+
+	SwapDataCache(1);
+	SwapDataCache(0);
+
+	FlushDataCache();
+	FlushCodeCache();
+
+	FlushCodeCacheRange(&main, 4);
+
+	// ? selector 6? listed in OSUtils.a, not listed in pascal or c headers.
+	//FlushExternalCache(); 
+
+	return 0;
+}

toolbox/CMakeLists.txt

@@ -10,12 +10,13 @@ set(TOOLBOX_SRC
 	loader.cpp
 	rm.cpp
 	os.cpp
-	os_internal.cpp
-	os_hfs_dispatch.cpp
-	os_highlevel.cpp
 	os_alias.cpp
 	os_fileinfo.cpp
 	os_gestalt.cpp
+	os_hfs_dispatch.cpp
+	os_highlevel.cpp
+	os_hwpriv.cpp
+	os_internal.cpp
 	os_volume.cpp
 	qd.cpp
 	sane.cpp

toolbox/os.h

@@ -110,6 +110,10 @@ namespace OS
 	uint16_t PrimeTime(uint16_t trap);
 	uint16_t RmvTime(uint16_t trap);
 
+	#pragma mark HWPriv
+	uint16_t HWPriv(uint16_t trap);
+	uint16_t FlushCodeCache(uint16_t trap);
+
 }
 
 #endif

toolbox/os_hwpriv.cpp

@@ -0,0 +1,141 @@
+/*
+ * 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;
+
+	}
+
+}

toolbox/toolbox.cpp

@@ -419,6 +419,16 @@ namespace ToolBox {
 				d0 = OS::PrimeTime(trap);
 				break;
 
+
+			case 0xA0BD:
+				d0 = OS::FlushCodeCache(trap);
+				break;
+
+			case 0xA098:
+			case 0xA198: // don't save a0
+				d0 = OS::HWPriv(trap);
+				break;
+
 			// resource manager stuff.
 
 			// Count1Resources (theType: ResType): Integer;