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
311 lines
8.7 KiB
C++
311 lines
8.7 KiB
C++
/*
|
|
AngelCode Scripting Library
|
|
Copyright (c) 2003-2013 Andreas Jonsson
|
|
|
|
This software is provided 'as-is', without any express or implied
|
|
warranty. In no event will the authors be held liable for any
|
|
damages arising from the use of this software.
|
|
|
|
Permission is granted to anyone to use this software for any
|
|
purpose, including commercial applications, and to alter it and
|
|
redistribute it freely, subject to the following restrictions:
|
|
|
|
1. The origin of this software must not be misrepresented; you
|
|
must not claim that you wrote the original software. If you use
|
|
this software in a product, an acknowledgment in the product
|
|
documentation would be appreciated but is not required.
|
|
|
|
2. Altered source versions must be plainly marked as such, and
|
|
must not be misrepresented as being the original software.
|
|
|
|
3. This notice may not be removed or altered from any source
|
|
distribution.
|
|
|
|
The original version of this library can be located at:
|
|
http://www.angelcode.com/angelscript/
|
|
|
|
Andreas Jonsson
|
|
andreas@angelcode.com
|
|
*/
|
|
|
|
//
|
|
// This code was adapted from as_callfunc_x64_msvc by _Vicious_ on August 20th, 2011.
|
|
//
|
|
|
|
#include <stdio.h>
|
|
|
|
#include "as_config.h"
|
|
|
|
#ifndef AS_MAX_PORTABILITY
|
|
#ifdef AS_X64_MINGW
|
|
|
|
#include "as_callfunc.h"
|
|
#include "as_scriptengine.h"
|
|
#include "as_texts.h"
|
|
#include "as_context.h"
|
|
|
|
BEGIN_AS_NAMESPACE
|
|
|
|
static asQWORD __attribute__((noinline)) CallX64(const asQWORD *args, const asQWORD *floatArgs, const int paramSize, asQWORD func)
|
|
{
|
|
volatile asQWORD ret = 0;
|
|
|
|
__asm__ __volatile__ (
|
|
"# Move the parameters into registers before the rsp is modified\n"
|
|
"mov %1, %%r10\n" // r10 = args
|
|
"mov %2, %%r11\n" // r11 = floatArgs
|
|
"xor %%r12, %%r12\n"
|
|
"mov %3, %%r12d\n"
|
|
"mov %4, %%r14\n" // r14 = func
|
|
|
|
"# Store the stack pointer in r15 since it is guaranteed not to change over a function call\n"
|
|
"mov %%rsp, %%r15\n"
|
|
|
|
"# Allocate space on the stack for the arguments\n"
|
|
"# Make room for at least 4 arguments even if there are less. When\n"
|
|
"# the compiler does optimizations for speed it may use these for \n"
|
|
"# temporary storage.\n"
|
|
"mov %%r12, %%rdi\n"
|
|
"add $32,%%edi\n"
|
|
|
|
"# Make sure the stack pointer is 16byte aligned so the\n"
|
|
"# whole program optimizations will work properly\n"
|
|
"# TODO: runtime optimize: Can this be optimized with fewer instructions?\n"
|
|
"mov %%rsp,%%rsi\n"
|
|
"sub %%rdi,%%rsi\n"
|
|
"and $0x8,%%rsi\n"
|
|
"add %%rsi,%%rdi\n"
|
|
"sub %%rdi,%%rsp\n"
|
|
|
|
"# Jump straight to calling the function if no parameters\n"
|
|
"cmp $0,%%r12 # Compare paramSize with 0\n"
|
|
"je callfunc # Jump to call funtion if (paramSize == 0)\n"
|
|
|
|
"# Copy arguments from script stack to application stack\n"
|
|
"# Order is (first to last):\n"
|
|
"# rcx, rdx, r8, r9 & everything else goes on stack\n"
|
|
"movq (%%r10),%%rcx\n"
|
|
"movq 8(%%r10),%%rdx\n"
|
|
"movq 16(%%r10),%%r8\n"
|
|
"movq 24(%%r10),%%r9\n"
|
|
|
|
"# Negate the 4 params from the size to be copied\n"
|
|
"sub $32,%%r12d\n"
|
|
"js copyfloat # Jump if negative result\n"
|
|
"jz copyfloat # Jump if zero result\n"
|
|
|
|
"# Now copy all remaining params onto stack allowing space for first four\n"
|
|
"# params to be flushed back to the stack if required by the callee.\n"
|
|
"add $32,%%r10 # Position input pointer 4 args ahead\n"
|
|
"mov %%rsp,%%r13 # Put the stack pointer into r13\n"
|
|
"add $32,%%r13 # Leave space for first 4 args on stack\n"
|
|
|
|
"copyoverflow:\n"
|
|
"movq (%%r10),%%rdi # Read param from source stack into rdi\n"
|
|
"movq %%rdi,(%%r13) # Copy param to real stack\n"
|
|
"add $8,%%r13 # Move virtual stack pointer\n"
|
|
"add $8,%%r10 # Move source stack pointer\n"
|
|
"sub $8,%%r12d # Decrement remaining count\n"
|
|
"jnz copyoverflow # Continue if more params\n"
|
|
|
|
"copyfloat:\n"
|
|
"# Any floating point params?\n"
|
|
"cmp $0,%%r11\n"
|
|
"je callfunc\n"
|
|
|
|
"movlpd (%%r11),%%xmm0\n"
|
|
"movlpd 8(%%r11),%%xmm1\n"
|
|
"movlpd 16(%%r11),%%xmm2\n"
|
|
"movlpd 24(%%r11),%%xmm3\n"
|
|
|
|
"callfunc:\n"
|
|
"call *%%r14\n"
|
|
|
|
"# restore stack pointer\n"
|
|
"mov %%r15, %%rsp\n"
|
|
|
|
"lea %0, %%rbx\n" // Load the address of the ret variable into rbx
|
|
"movq %%rax,(%%rbx)\n" // Copy the returned value into the ret variable
|
|
|
|
: // no output
|
|
: "m" (ret), "r" (args), "r" (floatArgs), "r" (paramSize), "r" (func)
|
|
: "rdi", "rsi", "rsp", "rbx", "r10", "r11", "%r12", "r13", "r14", "r15"
|
|
);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static asDWORD GetReturnedFloat()
|
|
{
|
|
volatile asDWORD ret = 0;
|
|
|
|
__asm__ __volatile__ (
|
|
"lea %0, %%rax\n"
|
|
"movss %%xmm0, (%%rax)"
|
|
: /* no output */
|
|
: "m" (ret)
|
|
: "%rax"
|
|
);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static asQWORD GetReturnedDouble()
|
|
{
|
|
volatile asQWORD ret = 0;
|
|
|
|
__asm__ __volatile__ (
|
|
"lea %0, %%rax\n"
|
|
"movlpd %%xmm0, (%%rax)"
|
|
: /* no optput */
|
|
: "m" (ret)
|
|
: "%rax"
|
|
);
|
|
|
|
return ret;
|
|
}
|
|
|
|
asQWORD CallSystemFunctionNative(asCContext *context, asCScriptFunction *descr, void *obj, asDWORD *args, void *retPointer, asQWORD &/*retQW2*/)
|
|
{
|
|
asCScriptEngine *engine = context->m_engine;
|
|
asSSystemFunctionInterface *sysFunc = descr->sysFuncIntf;
|
|
|
|
asQWORD retQW = 0;
|
|
void *func = (void*)sysFunc->func;
|
|
asUINT paramSize = 0; // QWords
|
|
void **vftable;
|
|
|
|
asQWORD allArgBuffer[64];
|
|
asQWORD floatArgBuffer[4];
|
|
|
|
int callConv = sysFunc->callConv;
|
|
|
|
if( sysFunc->hostReturnInMemory )
|
|
{
|
|
// The return is made in memory
|
|
callConv++;
|
|
|
|
// Set the return pointer as the first argument
|
|
allArgBuffer[paramSize++] = (asQWORD)retPointer;
|
|
}
|
|
|
|
if( callConv == ICC_THISCALL ||
|
|
callConv == ICC_THISCALL_RETURNINMEM ||
|
|
callConv == ICC_VIRTUAL_THISCALL ||
|
|
callConv == ICC_VIRTUAL_THISCALL_RETURNINMEM )
|
|
{
|
|
// Add the object pointer as the first parameter
|
|
allArgBuffer[paramSize++] = (asQWORD)obj;
|
|
}
|
|
|
|
if( callConv == ICC_CDECL_OBJFIRST ||
|
|
callConv == ICC_CDECL_OBJFIRST_RETURNINMEM )
|
|
{
|
|
// Add the object pointer as the first parameter
|
|
allArgBuffer[paramSize++] = (asQWORD)obj;
|
|
}
|
|
if( callConv == ICC_VIRTUAL_THISCALL ||
|
|
callConv == ICC_VIRTUAL_THISCALL_RETURNINMEM )
|
|
{
|
|
// Get the true function pointer from the virtual function table
|
|
vftable = *(void***)obj;
|
|
func = vftable[asPWORD(func)>>3];
|
|
}
|
|
|
|
// Move the arguments to the buffer
|
|
asUINT dpos = paramSize;
|
|
asUINT spos = 0;
|
|
for( asUINT n = 0; n < descr->parameterTypes.GetLength(); n++ )
|
|
{
|
|
if( descr->parameterTypes[n].IsObject() && !descr->parameterTypes[n].IsObjectHandle() && !descr->parameterTypes[n].IsReference() )
|
|
{
|
|
if( descr->parameterTypes[n].GetSizeInMemoryDWords() >= AS_LARGE_OBJ_MIN_SIZE ||
|
|
(descr->parameterTypes[n].GetObjectType()->flags & COMPLEX_MASK) )
|
|
{
|
|
allArgBuffer[dpos++] = *(asQWORD*)&args[spos];
|
|
spos += AS_PTR_SIZE;
|
|
paramSize++;
|
|
}
|
|
else
|
|
{
|
|
// Copy the object's memory to the buffer
|
|
memcpy(&allArgBuffer[dpos], *(void**)(args+spos), descr->parameterTypes[n].GetSizeInMemoryBytes());
|
|
|
|
// Delete the original memory
|
|
engine->CallFree(*(char**)(args+spos));
|
|
spos += AS_PTR_SIZE;
|
|
asUINT dwords = descr->parameterTypes[n].GetSizeInMemoryDWords();
|
|
asUINT qwords = (dwords >> 1) + (dwords & 1);
|
|
dpos += qwords;
|
|
paramSize += qwords;
|
|
}
|
|
}
|
|
else if( descr->parameterTypes[n].GetTokenType() == ttQuestion )
|
|
{
|
|
// Copy the reference and the type id
|
|
allArgBuffer[dpos++] = *(asQWORD*)&args[spos];
|
|
spos += 2;
|
|
allArgBuffer[dpos++] = args[spos++];
|
|
paramSize += 2;
|
|
}
|
|
else
|
|
{
|
|
// Copy the value directly
|
|
asUINT dwords = descr->parameterTypes[n].GetSizeOnStackDWords();
|
|
if( dwords > 1 )
|
|
{
|
|
allArgBuffer[dpos] = *(asQWORD*)&args[spos];
|
|
|
|
// Double arguments are moved to a separate buffer in order to be placed in the XMM registers,
|
|
// though this is only done for first 4 arguments, the rest are placed on the stack
|
|
if( paramSize < 4 && descr->parameterTypes[n].IsDoubleType() )
|
|
floatArgBuffer[dpos] = *(asQWORD*)&args[spos];
|
|
|
|
dpos++;
|
|
spos += 2;
|
|
}
|
|
else
|
|
{
|
|
allArgBuffer[dpos] = args[spos];
|
|
|
|
// Float arguments are moved to a separate buffer in order to be placed in the XMM registers,
|
|
// though this is only done for first 4 arguments, the rest are placed on the stack
|
|
if( paramSize < 4 && descr->parameterTypes[n].IsFloatType() )
|
|
floatArgBuffer[dpos] = args[spos];
|
|
|
|
dpos++;
|
|
spos++;
|
|
}
|
|
|
|
paramSize++;
|
|
}
|
|
}
|
|
|
|
if( callConv == ICC_CDECL_OBJLAST ||
|
|
callConv == ICC_CDECL_OBJLAST_RETURNINMEM )
|
|
{
|
|
// Add the object pointer as the last parameter
|
|
allArgBuffer[paramSize++] = (asQWORD)obj;
|
|
}
|
|
|
|
retQW = CallX64(allArgBuffer, floatArgBuffer, paramSize*8, (asPWORD)func);
|
|
|
|
// If the return is a float value we need to get the value from the FP register
|
|
if( sysFunc->hostReturnFloat )
|
|
{
|
|
if( sysFunc->hostReturnSize == 1 )
|
|
*(asDWORD*)&retQW = GetReturnedFloat();
|
|
else
|
|
retQW = GetReturnedDouble();
|
|
}
|
|
|
|
return retQW;
|
|
}
|
|
|
|
END_AS_NAMESPACE
|
|
|
|
#endif // AS_X64_MSVC
|
|
#endif // AS_MAX_PORTABILITY
|
|
|
|
|