139f20b39d
Conflicts: CMakeLists.txt sources.cmake src/io/file_manager.cpp src/io/file_manager.hpp src/modes/world.hpp src/tracks/track.hpp src/tracks/track_object_presentation.cpp
441 lines
11 KiB
C++
441 lines
11 KiB
C++
/*
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AngelCode Scripting Library
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Copyright (c) 2003-2013 Andreas Jonsson
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any
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damages arising from the use of this software.
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Permission is granted to anyone to use this software for any
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purpose, including commercial applications, and to alter it and
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redistribute it freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you
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must not claim that you wrote the original software. If you use
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this software in a product, an acknowledgment in the product
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documentation would be appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and
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must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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The original version of this library can be located at:
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http://www.angelcode.com/angelscript/
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Andreas Jonsson
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andreas@angelcode.com
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*/
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//
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// as_callfunc_mips.cpp
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//
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// These functions handle the actual calling of system functions
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//
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// This version is MIPS specific and was originally written
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// by Manu Evans in April, 2006
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//
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#include "as_config.h"
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#ifndef AS_MAX_PORTABILITY
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#ifdef AS_MIPS
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#include "as_callfunc.h"
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#include "as_scriptengine.h"
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#include "as_texts.h"
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#include "as_tokendef.h"
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#include "as_context.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <regdef.h>
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BEGIN_AS_NAMESPACE
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#define AS_MIPS_MAX_ARGS 32
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#define AS_NUM_REG_FLOATS 8
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#define AS_NUM_REG_INTS 8
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// The array used to send values to the correct places.
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// first 0-8 regular values to load into the a0-a3, t0-t3 registers
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// then 0-8 float values to load into the f12-f19 registers
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// then (AS_MIPS_MAX_ARGS - 16) values to load onto the stack
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// the +1 is for when CallThis (object methods) is used
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// extra +1 when returning in memory
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extern "C" {
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// TODO: This array shouldn't be global. It should be a local array in CallSystemFunctionNative
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asDWORD mipsArgs[AS_MIPS_MAX_ARGS + 1 + 1];
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}
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// Loads all data into the correct places and calls the function.
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// intArgSize is the size in bytes for how much data to put in int registers
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// floatArgSize is the size in bytes for how much data to put in float registers
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// stackArgSize is the size in bytes for how much data to put on the callstack
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extern "C" asQWORD mipsFunc(int intArgSize, int floatArgSize, int stackArgSize, asDWORD func);
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// puts the arguments in the correct place in the mipsArgs-array. See comments above.
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// This could be done better.
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inline void splitArgs(const asDWORD *args, int argNum, int &numRegIntArgs, int &numRegFloatArgs, int &numRestArgs, int hostFlags)
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{
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int i;
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int argBit = 1;
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for (i = 0; i < argNum; i++)
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{
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if (hostFlags & argBit)
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{
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if (numRegFloatArgs < AS_NUM_REG_FLOATS)
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{
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// put in float register
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mipsArgs[AS_NUM_REG_INTS + numRegFloatArgs] = args[i];
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numRegFloatArgs++;
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}
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else
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{
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// put in stack
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mipsArgs[AS_NUM_REG_INTS + AS_NUM_REG_FLOATS + numRestArgs] = args[i];
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numRestArgs++;
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}
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}
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else
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{
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if (numRegIntArgs < AS_NUM_REG_INTS)
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{
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// put in int register
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mipsArgs[numRegIntArgs] = args[i];
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numRegIntArgs++;
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}
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else
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{
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// put in stack
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mipsArgs[AS_NUM_REG_INTS + AS_NUM_REG_FLOATS + numRestArgs] = args[i];
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numRestArgs++;
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}
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}
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argBit <<= 1;
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}
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}
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asQWORD CallCDeclFunction(const asDWORD *args, int argSize, asDWORD func, int flags)
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{
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int argNum = argSize >> 2;
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int intArgs = 0;
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int floatArgs = 0;
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int restArgs = 0;
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// put the arguments in the correct places in the mipsArgs array
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if(argNum > 0)
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splitArgs(args, argNum, intArgs, floatArgs, restArgs, flags);
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return mipsFunc(intArgs << 2, floatArgs << 2, restArgs << 2, func);
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}
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// This function is identical to CallCDeclFunction, with the only difference that
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// the value in the first parameter is the object
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asQWORD CallThisCallFunction(const void *obj, const asDWORD *args, int argSize, asDWORD func, int flags)
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{
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int argNum = argSize >> 2;
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int intArgs = 1;
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int floatArgs = 0;
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int restArgs = 0;
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mipsArgs[0] = (asDWORD) obj;
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// put the arguments in the correct places in the mipsArgs array
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if (argNum > 0)
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splitArgs(args, argNum, intArgs, floatArgs, restArgs, flags);
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return mipsFunc(intArgs << 2, floatArgs << 2, restArgs << 2, func);
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}
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// This function is identical to CallCDeclFunction, with the only difference that
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// the value in the last parameter is the object
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asQWORD CallThisCallFunction_objLast(const void *obj, const asDWORD *args, int argSize, asDWORD func, int flags)
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{
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int argNum = argSize >> 2;
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int intArgs = 0;
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int floatArgs = 0;
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int restArgs = 0;
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// put the arguments in the correct places in the mipsArgs array
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if(argNum > 0)
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splitArgs(args, argNum, intArgs, floatArgs, restArgs, flags);
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if(intArgs < AS_NUM_REG_INTS)
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{
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mipsArgs[intArgs] = (asDWORD) obj;
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intArgs++;
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}
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else
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{
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mipsArgs[AS_NUM_REG_INTS + AS_NUM_REG_FLOATS + restArgs] = (asDWORD) obj;
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restArgs++;
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}
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return mipsFunc(intArgs << 2, floatArgs << 2, restArgs << 2, func);
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}
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asDWORD GetReturnedFloat()
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{
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asDWORD f;
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asm("swc1 $f0, %0\n" : "=m"(f));
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return f;
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}
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/*
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asDWORD GetReturnedFloat();
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asm(
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" .align 4\n"
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" .global GetReturnedFloat\n"
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"GetReturnedFloat:\n"
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" .set noreorder\n"
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" .set nomacro\n"
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" j $ra\n"
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" mfc1 $v0, $f0\n"
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" .set macro\n"
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" .set reorder\n"
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" .end Func\n"
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*/
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// sizeof(double) == 4 with sh-elf-gcc (3.4.0) -m4
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// so this isn't really used...
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asQWORD GetReturnedDouble()
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{
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asQWORD d = 0;
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printf("Broken!!!");
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/*
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asm("sw $v0, %0\n" : "=m"(d));
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*/
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return d;
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}
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asQWORD CallSystemFunctionNative(asCContext *context, asCScriptFunction *descr, void *obj, asDWORD *args, void *retPointer, asQWORD &/*retQW2*/)
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{
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asCScriptEngine *engine = context->m_engine;
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asSSystemFunctionInterface *sysFunc = descr->sysFuncIntf;
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int callConv = sysFunc->callConv;
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asQWORD retQW = 0;
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void *func = (void*)sysFunc->func;
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int paramSize = sysFunc->paramSize;
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asDWORD *vftable;
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if( descr->returnType.IsObject() && !descr->returnType.IsReference() && !descr->returnType.IsObjectHandle() )
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{
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mipsArgs[AS_MIPS_MAX_ARGS+1] = (asDWORD) retPointer;
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}
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asASSERT(descr->parameterTypes.GetLength() <= AS_MIPS_MAX_ARGS);
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// mark all float arguments
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int argBit = 1;
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int hostFlags = 0;
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int intArgs = 0;
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for( size_t a = 0; a < descr->parameterTypes.GetLength(); a++ )
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{
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if (descr->parameterTypes[a].IsFloatType())
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hostFlags |= argBit;
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else
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intArgs++;
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argBit <<= 1;
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}
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asDWORD paramBuffer[64];
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if( sysFunc->takesObjByVal )
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{
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paramSize = 0;
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int spos = 0;
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int dpos = 1;
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for( asUINT n = 0; n < descr->parameterTypes.GetLength(); n++ )
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{
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if( descr->parameterTypes[n].IsObject() && !descr->parameterTypes[n].IsObjectHandle() && !descr->parameterTypes[n].IsReference() )
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{
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#ifdef COMPLEX_OBJS_PASSED_BY_REF
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if( descr->parameterTypes[n].GetObjectType()->flags & COMPLEX_MASK )
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{
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paramBuffer[dpos++] = args[spos++];
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paramSize++;
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}
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else
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#endif
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{
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// Copy the object's memory to the buffer
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memcpy(¶mBuffer[dpos], *(void**)(args+spos), descr->parameterTypes[n].GetSizeInMemoryBytes());
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// Delete the original memory
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engine->CallFree(*(char**)(args+spos));
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spos++;
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dpos += descr->parameterTypes[n].GetSizeInMemoryDWords();
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paramSize += descr->parameterTypes[n].GetSizeInMemoryDWords();
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}
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}
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else
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{
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// Copy the value directly
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paramBuffer[dpos++] = args[spos++];
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if( descr->parameterTypes[n].GetSizeOnStackDWords() > 1 )
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paramBuffer[dpos++] = args[spos++];
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paramSize += descr->parameterTypes[n].GetSizeOnStackDWords();
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}
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}
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// Keep a free location at the beginning
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args = ¶mBuffer[1];
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}
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switch( callConv )
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{
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case ICC_CDECL:
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case ICC_CDECL_RETURNINMEM:
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case ICC_STDCALL:
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case ICC_STDCALL_RETURNINMEM:
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retQW = CallCDeclFunction(args, paramSize<<2, (asDWORD)func, hostFlags);
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break;
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case ICC_THISCALL:
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case ICC_THISCALL_RETURNINMEM:
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retQW = CallThisCallFunction(obj, args, paramSize<<2, (asDWORD)func, hostFlags);
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break;
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case ICC_VIRTUAL_THISCALL:
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case ICC_VIRTUAL_THISCALL_RETURNINMEM:
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// Get virtual function table from the object pointer
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vftable = *(asDWORD**)obj;
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retQW = CallThisCallFunction(obj, args, paramSize<<2, vftable[asDWORD(func)>>2], hostFlags);
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break;
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case ICC_CDECL_OBJLAST:
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case ICC_CDECL_OBJLAST_RETURNINMEM:
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retQW = CallThisCallFunction_objLast(obj, args, paramSize<<2, (asDWORD)func, hostFlags);
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break;
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case ICC_CDECL_OBJFIRST:
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case ICC_CDECL_OBJFIRST_RETURNINMEM:
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retQW = CallThisCallFunction(obj, args, paramSize<<2, (asDWORD)func, hostFlags);
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break;
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default:
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context->SetInternalException(TXT_INVALID_CALLING_CONVENTION);
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}
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// If the return is a float value we need to get the value from the FP register
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if( sysFunc->hostReturnFloat )
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{
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if( sysFunc->hostReturnSize == 1 )
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*(asDWORD*)&retQW = GetReturnedFloat();
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else
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retQW = GetReturnedDouble();
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}
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return retQW;
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}
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asm(
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" .text\n"
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//" .align 2\n"
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" .global mipsFunc\n"
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" .ent mipsFunc\n"
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"mipsFunc:\n"
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//" .frame $fp,64,$31 # vars= 0, regs= 0/0, args= 0, gp= 0\n"
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//" .mask 0x00000000,0\n"
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//" .fmask 0x00000000,0\n"
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" .set noreorder\n"
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" .set nomacro\n"
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// align the stack frame to 8 bytes
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" addiu $12, $6, 7\n"
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" li $13, -8\n" // 0xfffffffffffffffc
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" and $12, $12, $13\n" // t4 holds the size of the argument block
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// and add 8 bytes for the return pointer and s0 backup
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" addiu $13, $12, 8\n" // t5 holds the total size of the stack frame (including return pointer)
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// save the s0 register (so we can use it to remember where our return pointer is lives)
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" sw $16, -4($sp)\n" // store the s0 register (so we can use it to remember how big our stack frame is)
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// push the stack
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" subu $sp, $sp, $13\n"
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// find the return address, place in s0
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" addu $16, $sp, $12\n"
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// store the return pointer
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" sw $31, 0($16)\n"
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// backup our function params
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" addiu $2, $7, 0\n"
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" addiu $3, $6, 0\n"
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// get global mipsArgs[] array pointer
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//" lui $15, %hi(mipsArgs)\n"
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//" addiu $15, $15, %lo(mipsArgs)\n"
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// we'll use the macro instead because SN Systems doesnt like %hi/%lo
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".set macro\n"
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" la $15, mipsArgs\n"
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".set nomacro\n"
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// load register params
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" lw $4, 0($15)\n"
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" lw $5, 4($15)\n"
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" lw $6, 8($15)\n"
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" lw $7, 12($15)\n"
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" lw $8, 16($15)\n"
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" lw $9, 20($15)\n"
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" lw $10, 24($15)\n"
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" lw $11, 28($15)\n"
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// load float params
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" lwc1 $f12, 32($15)\n"
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" lwc1 $f13, 36($15)\n"
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" lwc1 $f14, 40($15)\n"
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" lwc1 $f15, 44($15)\n"
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" lwc1 $f16, 48($15)\n"
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" lwc1 $f17, 52($15)\n"
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" lwc1 $f18, 56($15)\n"
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" lwc1 $f19, 60($15)\n"
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// skip stack paramaters if there are none
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" beq $3, $0, andCall\n"
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// push stack paramaters
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" addiu $15, $15, 64\n"
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"pushArgs:\n"
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" addiu $3, -4\n"
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// load from $15 + stack bytes ($3)
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" addu $14, $15, $3\n"
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" lw $14, 0($14)\n"
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// store to $sp + stack bytes ($3)
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" addu $13, $sp, $3\n"
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" sw $14, 0($13)\n"
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// if there are more, loop...
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" bne $3, $0, pushArgs\n"
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" nop\n"
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// and call the function
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"andCall:\n"
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" jal $2\n"
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" nop\n"
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// restore the return pointer
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" lw $31, 0($16)\n"
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// pop the stack pointer (remembering the return pointer was 8 bytes below the top)
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" addiu $sp, $16, 8\n"
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// and return from the function
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" jr $31\n"
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// restore the s0 register (in the branch delay slot)
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" lw $16, -4($sp)\n"
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" .set macro\n"
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" .set reorder\n"
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" .end mipsFunc\n"
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" .size mipsFunc, .-mipsFunc\n"
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);
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END_AS_NAMESPACE
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#endif // AS_MIPS
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#endif // AS_MAX_PORTABILITY
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