mirror of
https://github.com/ZDoom/gzdoom.git
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9ae272d753
- scriptified all Effect functions of Fastprojectile's children - implemented access to class meta data. - added a VM instruction to retrieve the class metadata, to eliminate the overhead of the function call that would otherwise be needed. - made GetClass() a builtin so that it can use the new instruction Important note about this commit: Scriptifying CFlameMissile::Effect revealed a problem with the virtual function interface: In order to work, this needs to be explicitly enabled for each single native class that may be used as a base for a scripted class. Needless to say, this will end up way too much work, as there are over 100 native classes, excluding those which will be scriptified. But in order to fix the problem this partially broken state needs to be committed first.
224 lines
6 KiB
C++
224 lines
6 KiB
C++
/*
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** vmexec.cpp
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**
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**---------------------------------------------------------------------------
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** Copyright -2016 Randy Heit
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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
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** 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
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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#include <math.h>
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#include <v_video.h>
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#include <s_sound.h>
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#include "dobject.h"
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#include "xs_Float.h"
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#include "r_state.h"
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#include "textures/textures.h"
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#include "math/cmath.h"
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#define IMPLEMENT_VMEXEC
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#if !defined(COMPGOTO) && defined(__GNUC__)
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#define COMPGOTO 1
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#endif
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#if COMPGOTO
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#define OP(x) x
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#define NEXTOP do { pc++; unsigned op = pc->op; a = pc->a; goto *ops[op]; } while(0)
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#else
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#define OP(x) case OP_##x
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#define NEXTOP pc++; break
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#endif
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#define luai_nummod(a,b) ((a) - floor((a)/(b))*(b))
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#define A (pc[0].a)
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#define B (pc[0].b)
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#define C (pc[0].c)
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#define Cs (pc[0].cs)
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#define BC (pc[0].i16u)
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#define BCs (pc[0].i16)
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#define ABCs (pc[0].i24)
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#define JMPOFS(x) ((x)->i24)
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#define KC (konstd[C])
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#define RC (reg.d[C])
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#define PA (reg.a[A])
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#define PB (reg.a[B])
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#define ASSERTD(x) assert((unsigned)(x) < f->NumRegD)
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#define ASSERTF(x) assert((unsigned)(x) < f->NumRegF)
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#define ASSERTA(x) assert((unsigned)(x) < f->NumRegA)
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#define ASSERTS(x) assert((unsigned)(x) < f->NumRegS)
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#define ASSERTO(x) assert((unsigned)(x) < f->NumRegA && reg.atag[x] == ATAG_OBJECT)
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#define ASSERTKD(x) assert(sfunc != NULL && (unsigned)(x) < sfunc->NumKonstD)
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#define ASSERTKF(x) assert(sfunc != NULL && (unsigned)(x) < sfunc->NumKonstF)
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#define ASSERTKA(x) assert(sfunc != NULL && (unsigned)(x) < sfunc->NumKonstA)
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#define ASSERTKS(x) assert(sfunc != NULL && (unsigned)(x) < sfunc->NumKonstS)
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#define THROW(x) throw(EVMAbortException(x))
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#define CMPJMP(test) \
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if ((test) == (a & CMP_CHECK)) { \
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assert(pc[1].op == OP_JMP); \
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pc += 1 + JMPOFS(pc+1); \
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} else { \
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pc += 1; \
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}
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#define GETADDR(a,o,x) \
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if (a == NULL) { THROW(x); } \
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ptr = (VM_SBYTE *)a + o
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static const VM_UWORD ZapTable[16] =
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{
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0x00000000, 0x000000FF, 0x0000FF00, 0x0000FFFF,
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0x00FF0000, 0x00FF00FF, 0x00FFFF00, 0x00FFFFFF,
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0xFF000000, 0xFF0000FF, 0xFF00FF00, 0xFF00FFFF,
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0xFFFF0000, 0xFFFF00FF, 0xFFFFFF00, 0xFFFFFFFF
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};
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#ifdef NDEBUG
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#define WAS_NDEBUG 1
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#else
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#define WAS_NDEBUG 0
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#endif
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#if WAS_NDEBUG
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#undef NDEBUG
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#endif
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#undef assert
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#include <assert.h>
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struct VMExec_Checked
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{
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#include "vmexec.h"
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};
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#if WAS_NDEBUG
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#define NDEBUG
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#endif
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#if !WAS_NDEBUG
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#define NDEBUG
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#endif
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#undef assert
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#include <assert.h>
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struct VMExec_Unchecked
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{
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#include "vmexec.h"
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};
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#if !WAS_NDEBUG
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#undef NDEBUG
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#endif
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#undef assert
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#include <assert.h>
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int (*VMExec)(VMFrameStack *stack, const VMOP *pc, VMReturn *ret, int numret) =
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#ifdef NDEBUG
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VMExec_Unchecked::Exec
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#else
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VMExec_Checked::Exec
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#endif
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;
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//===========================================================================
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//
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// VMSelectEngine
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//
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// Selects the VM engine, either checked or unchecked. Default will decide
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// based on the NDEBUG preprocessor definition.
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//
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//===========================================================================
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void VMSelectEngine(EVMEngine engine)
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{
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switch (engine)
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{
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case VMEngine_Default:
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#ifdef NDEBUG
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VMExec = VMExec_Unchecked::Exec;
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#else
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#endif
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VMExec = VMExec_Checked::Exec;
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break;
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case VMEngine_Unchecked:
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VMExec = VMExec_Unchecked::Exec;
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break;
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case VMEngine_Checked:
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VMExec = VMExec_Checked::Exec;
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break;
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}
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}
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//===========================================================================
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//
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// VMFillParams
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//
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// Takes parameters from the parameter stack and stores them in the callee's
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// registers.
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//
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//===========================================================================
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void VMFillParams(VMValue *params, VMFrame *callee, int numparam)
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{
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unsigned int regd, regf, regs, rega;
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VMScriptFunction *calleefunc = static_cast<VMScriptFunction *>(callee->Func);
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const VMRegisters calleereg(callee);
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assert(calleefunc != NULL && !calleefunc->Native);
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assert(numparam == calleefunc->NumArgs || ((int)calleefunc->DefaultArgs.Size() == calleefunc->NumArgs));
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assert(REGT_INT == 0 && REGT_FLOAT == 1 && REGT_STRING == 2 && REGT_POINTER == 3);
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regd = regf = regs = rega = 0;
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for (int i = 0; i < calleefunc->NumArgs; ++i)
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{
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// get all actual parameters and fill the rest from the defaults.
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VMValue &p = i < numparam? params[i] : calleefunc->DefaultArgs[i];
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if (p.Type < REGT_STRING)
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{
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if (p.Type == REGT_INT)
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{
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calleereg.d[regd++] = p.i;
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}
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else // p.Type == REGT_FLOAT
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{
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calleereg.f[regf++] = p.f;
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}
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}
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else if (p.Type == REGT_STRING)
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{
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calleereg.s[regs++] = p.s();
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}
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else
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{
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assert(p.Type == REGT_POINTER);
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calleereg.a[rega] = p.a;
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calleereg.atag[rega++] = p.atag;
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}
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}
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}
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