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- added static constant arrays. At the moment they can only be defined inside functions due to lack of dedicated storage inside classes for static data.

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- added new VM instructions to access the constant tables with a variable index.
- refactored VMFunctionBuilder's constant tables so that they are not limited to one entry per value. While this works fine for single values, it makes it impossible to store constant arrays in here.
This commit is contained in:
Christoph Oelckers 2016-11-20 18:00:37 +01:00
parent bb25c5faaa
commit 5951a9449c
11 changed files with 413 additions and 106 deletions
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216
src/scripting/codegeneration/codegen.cpp
View file

@ -5402,7 +5402,13 @@ FxExpression *FxIdentifier::Resolve(FCompileContext& ctx)
FxLocalVariableDeclaration *local = ctx.FindLocalVariable(Identifier);
if (local != nullptr)
{
if (local->ValueType->GetRegType() != REGT_NIL)
if (local->ExprType == EFX_StaticArray)
{
auto x = new FxStaticArrayVariable(local, ScriptPosition);
delete this;
return x->Resolve(ctx);
}
else if (local->ValueType->GetRegType() != REGT_NIL)
{
auto x = new FxLocalVariable(local, ScriptPosition);
delete this;
@ -5693,6 +5699,38 @@ ExpEmit FxLocalVariable::Emit(VMFunctionBuilder *build)
}
//==========================================================================
//
//
//
//==========================================================================
FxStaticArrayVariable::FxStaticArrayVariable(FxLocalVariableDeclaration *var, const FScriptPosition &sc)
: FxExpression(EFX_StaticArrayVariable, sc)
{
Variable = static_cast<FxStaticArray*>(var);
ValueType = Variable->ValueType;
}
FxExpression *FxStaticArrayVariable::Resolve(FCompileContext &ctx)
{
CHECKRESOLVED();
return this;
}
bool FxStaticArrayVariable::RequestAddress(FCompileContext &ctx, bool *writable)
{
AddressRequested = true;
if (writable != nullptr) *writable = false;
return true;
}
ExpEmit FxStaticArrayVariable::Emit(VMFunctionBuilder *build)
{
// returns the first const register for this array
return ExpEmit(Variable->StackOffset, Variable->ElementType->GetRegType(), true, false);
}
//==========================================================================
//
@ -6357,6 +6395,7 @@ ExpEmit FxArrayElement::Emit(VMFunctionBuilder *build)
ExpEmit start = Array->Emit(build);
PArray *const arraytype = static_cast<PArray*>(Array->ValueType);
/* what was this for?
if (start.Konst)
{
ExpEmit tmpstart(build, REGT_POINTER);
@ -6364,16 +6403,17 @@ ExpEmit FxArrayElement::Emit(VMFunctionBuilder *build)
start.Free(build);
start = tmpstart;
}
*/
if (index->isConstant())
{
unsigned indexval = static_cast<FxConstant *>(index)->GetValue().GetInt();
assert(indexval < arraytype->ElementCount && "Array index out of bounds");
indexval *= arraytype->ElementSize;
if (AddressRequested)
{
if (indexval != 0)
{
indexval *= arraytype->ElementSize;
if (!start.Fixed)
{
build->Emit(OP_ADDA_RK, start.RegNum, start.RegNum, build->GetConstantInt(indexval));
@ -6389,61 +6429,90 @@ ExpEmit FxArrayElement::Emit(VMFunctionBuilder *build)
}
return start;
}
else
else if (!start.Konst)
{
start.Free(build);
ExpEmit dest(build, ValueType->GetRegType());
build->Emit(arraytype->ElementType->GetLoadOp(), dest.RegNum, start.RegNum, build->GetConstantInt(indexval));
build->Emit(arraytype->ElementType->GetLoadOp(), dest.RegNum, start.RegNum, build->GetConstantInt(indexval* arraytype->ElementSize));
return dest;
}
else
{
static int LK_Ops[] = { OP_LK, OP_LKF, OP_LKS, OP_LKP };
assert(start.RegType == ValueType->GetRegType());
ExpEmit dest(build, start.RegType);
build->Emit(LK_Ops[start.RegType], dest.RegNum, start.RegNum + indexval);
return dest;
}
}
else
{
ExpEmit indexv(index->Emit(build));
ExpEmit indexwork = indexv.Fixed ? ExpEmit(build, indexv.RegType) : indexv;
build->Emit(OP_BOUND, indexv.RegNum, arraytype->ElementCount);
int shiftbits = 0;
while (1u << shiftbits < arraytype->ElementSize)
{
shiftbits++;
}
if (1u << shiftbits == arraytype->ElementSize)
if (!start.Konst)
{
if (shiftbits > 0)
ExpEmit indexwork = indexv.Fixed ? ExpEmit(build, indexv.RegType) : indexv;
int shiftbits = 0;
while (1u << shiftbits < arraytype->ElementSize)
{
build->Emit(OP_SLL_RI, indexwork.RegNum, indexv.RegNum, shiftbits);
shiftbits++;
}
}
else
{
// A shift won't do, so use a multiplication
build->Emit(OP_MUL_RK, indexwork.RegNum, indexv.RegNum, build->GetConstantInt(arraytype->ElementSize));
}
indexwork.Free(build);
if (AddressRequested)
{
if (!start.Fixed)
if (1u << shiftbits == arraytype->ElementSize)
{
build->Emit(OP_ADDA_RR, start.RegNum, start.RegNum, indexwork.RegNum);
if (shiftbits > 0)
{
build->Emit(OP_SLL_RI, indexwork.RegNum, indexv.RegNum, shiftbits);
}
}
else
{
// A shift won't do, so use a multiplication
build->Emit(OP_MUL_RK, indexwork.RegNum, indexv.RegNum, build->GetConstantInt(arraytype->ElementSize));
}
indexwork.Free(build);
if (AddressRequested)
{
if (!start.Fixed)
{
build->Emit(OP_ADDA_RR, start.RegNum, start.RegNum, indexwork.RegNum);
}
else
{
start.Free(build);
// do not clobber local variables.
ExpEmit temp(build, start.RegType);
build->Emit(OP_ADDA_RR, temp.RegNum, start.RegNum, indexwork.RegNum);
start = temp;
}
return start;
}
else
{
start.Free(build);
// do not clobber local variables.
ExpEmit temp(build, start.RegType);
build->Emit(OP_ADDA_RR, temp.RegNum, start.RegNum, indexwork.RegNum);
start = temp;
ExpEmit dest(build, ValueType->GetRegType());
// added 1 to use the *_R version that takes the offset from a register
build->Emit(arraytype->ElementType->GetLoadOp() + 1, dest.RegNum, start.RegNum, indexwork.RegNum);
return dest;
}
return start;
}
else
{
start.Free(build);
ExpEmit dest(build, ValueType->GetRegType());
// added 1 to use the *_R version that takes the offset from a register
build->Emit(arraytype->ElementType->GetLoadOp() + 1, dest.RegNum, start.RegNum, indexwork.RegNum);
static int LKR_Ops[] = { OP_LK_R, OP_LKF_R, OP_LKS_R, OP_LKP_R };
assert(start.RegType == ValueType->GetRegType());
ExpEmit dest(build, start.RegType);
if (start.RegNum <= 255)
{
// Since large constant tables are the exception, the constant component in C is an immediate value here.
build->Emit(LKR_Ops[start.RegType], dest.RegNum, indexv.RegNum, start.RegNum);
}
else
{
build->Emit(OP_ADD_RK, indexv.RegNum, indexv.RegNum, build->GetConstantInt(start.RegNum));
build->Emit(LKR_Ops[start.RegType], dest.RegNum, indexv.RegNum, 0);
}
indexv.Free(build);
return dest;
}
}
@ -9241,3 +9310,82 @@ void FxLocalVariableDeclaration::Release(VMFunctionBuilder *build)
// Stack space will not be released because that would make controlled destruction impossible.
// For that all local stack variables need to live for the entire execution of a function.
}
FxStaticArray::FxStaticArray(PType *type, FName name, FArgumentList &args, const FScriptPosition &pos)
: FxLocalVariableDeclaration(NewArray(type, args.Size()), name, nullptr, VARF_Static|VARF_ReadOnly, pos)
{
ElementType = type;
ExprType = EFX_StaticArray;
values = std::move(args);
}
FxExpression *FxStaticArray::Resolve(FCompileContext &ctx)
{
bool fail = false;
for (unsigned i = 0; i < values.Size(); i++)
{
values[i] = new FxTypeCast(values[i], ElementType, false);
values[i] = values[i]->Resolve(ctx);
if (values[i] == nullptr) fail = true;
else if (!values[i]->isConstant())
{
ScriptPosition.Message(MSG_ERROR, "Initializer must be constant");
fail = true;
}
}
if (fail)
{
delete this;
return nullptr;
}
if (ElementType->GetRegType() == REGT_NIL)
{
ScriptPosition.Message(MSG_ERROR, "Invalid type for constant array");
delete this;
return nullptr;
}
ctx.Block->LocalVars.Push(this);
return this;
}
ExpEmit FxStaticArray::Emit(VMFunctionBuilder *build)
{
switch (ElementType->GetRegType())
{
default:
assert(false && "Invalid register type");
break;
case REGT_INT:
{
TArray<int> cvalues;
for (auto v : values) cvalues.Push(static_cast<FxConstant *>(v)->GetValue().GetInt());
StackOffset = build->AllocConstantsInt(cvalues.Size(), &cvalues[0]);
break;
}
case REGT_FLOAT:
{
TArray<double> cvalues;
for (auto v : values) cvalues.Push(static_cast<FxConstant *>(v)->GetValue().GetFloat());
StackOffset = build->AllocConstantsFloat(cvalues.Size(), &cvalues[0]);
break;
}
case REGT_STRING:
{
TArray<FString> cvalues;
for (auto v : values) cvalues.Push(static_cast<FxConstant *>(v)->GetValue().GetString());
StackOffset = build->AllocConstantsString(cvalues.Size(), &cvalues[0]);
break;
}
case REGT_POINTER:
{
TArray<void*> cvalues;
for (auto v : values) cvalues.Push(static_cast<FxConstant *>(v)->GetValue().GetPointer());
StackOffset = build->AllocConstantsAddress(cvalues.Size(), &cvalues[0], ElementType->GetLoadOp() == OP_LO ? ATAG_OBJECT : ATAG_GENERIC);
break;
}
}
return ExpEmit();
}

44
src/scripting/codegeneration/codegen.h
View file

@ -282,6 +282,8 @@ enum EFxType
EFX_Super,
EFX_StackVariable,
EFX_MultiAssign,
EFX_StaticArray,
EFX_StaticArrayVariable,
EFX_COUNT
};
@ -1308,6 +1310,25 @@ public:
ExpEmit Emit(VMFunctionBuilder *build);
};
//==========================================================================
//
// FxLocalVariable
//
//==========================================================================
class FxStaticArray;
class FxStaticArrayVariable : public FxExpression
{
public:
FxStaticArray *Variable;
bool AddressRequested;
FxStaticArrayVariable(FxLocalVariableDeclaration*, const FScriptPosition&);
FxExpression *Resolve(FCompileContext&);
bool RequestAddress(FCompileContext &ctx, bool *writable);
ExpEmit Emit(VMFunctionBuilder *build);
};
//==========================================================================
//
// FxSelf
@ -1529,6 +1550,7 @@ class FxCompoundStatement : public FxSequence
FxCompoundStatement *Outer = nullptr;
friend class FxLocalVariableDeclaration;
friend class FxStaticArray;
friend class FxMultiAssign;
public:
@ -1841,6 +1863,7 @@ class FxLocalVariableDeclaration : public FxExpression
{
friend class FxCompoundStatement;
friend class FxLocalVariable;
friend class FxStaticArrayVariable;
FName Name;
FxExpression *Init;
@ -1859,4 +1882,25 @@ public:
};
//==========================================================================
//
//
//
//==========================================================================
class FxStaticArray : public FxLocalVariableDeclaration
{
friend class FxStaticArrayVariable;
PType *ElementType;
FArgumentList values;
public:
FxStaticArray(PType *type, FName name, FArgumentList &args, const FScriptPosition &pos);
FxExpression *Resolve(FCompileContext&);
ExpEmit Emit(VMFunctionBuilder *build);
};
#endif

147
src/scripting/vm/vmbuilder.cpp
View file

@ -45,10 +45,6 @@
VMFunctionBuilder::VMFunctionBuilder(int numimplicits)
{
NumIntConstants = 0;
NumFloatConstants = 0;
NumAddressConstants = 0;
NumStringConstants = 0;
MaxParam = 0;
ActiveParam = 0;
NumImplicits = numimplicits;
@ -74,25 +70,25 @@ VMFunctionBuilder::~VMFunctionBuilder()
void VMFunctionBuilder::MakeFunction(VMScriptFunction *func)
{
func->Alloc(Code.Size(), NumIntConstants, NumFloatConstants, NumStringConstants, NumAddressConstants);
func->Alloc(Code.Size(), IntConstantList.Size(), FloatConstantList.Size(), StringConstantList.Size(), AddressConstantList.Size());
// Copy code block.
memcpy(func->Code, &Code[0], Code.Size() * sizeof(VMOP));
// Create constant tables.
if (NumIntConstants > 0)
if (IntConstantList.Size() > 0)
{
FillIntConstants(func->KonstD);
}
if (NumFloatConstants > 0)
if (FloatConstantList.Size() > 0)
{
FillFloatConstants(func->KonstF);
}
if (NumAddressConstants > 0)
if (AddressConstantList.Size() > 0)
{
FillAddressConstants(func->KonstA, func->KonstATags());
}
if (NumStringConstants > 0)
if (StringConstantList.Size() > 0)
{
FillStringConstants(func->KonstS);
}
@ -118,13 +114,7 @@ void VMFunctionBuilder::MakeFunction(VMScriptFunction *func)
void VMFunctionBuilder::FillIntConstants(int *konst)
{
TMapIterator<int, int> it(IntConstants);
TMap<int, int>::Pair *pair;
while (it.NextPair(pair))
{
konst[pair->Value] = pair->Key;
}
memcpy(konst, &IntConstantList[0], sizeof(int) * IntConstantList.Size());
}
//==========================================================================
@ -135,13 +125,7 @@ void VMFunctionBuilder::FillIntConstants(int *konst)
void VMFunctionBuilder::FillFloatConstants(double *konst)
{
TMapIterator<double, int> it(FloatConstants);
TMap<double, int>::Pair *pair;
while (it.NextPair(pair))
{
konst[pair->Value] = pair->Key;
}
memcpy(konst, &FloatConstantList[0], sizeof(double) * FloatConstantList.Size());
}
//==========================================================================
@ -152,14 +136,8 @@ void VMFunctionBuilder::FillFloatConstants(double *konst)
void VMFunctionBuilder::FillAddressConstants(FVoidObj *konst, VM_ATAG *tags)
{
TMapIterator<void *, AddrKonst> it(AddressConstants);
TMap<void *, AddrKonst>::Pair *pair;
while (it.NextPair(pair))
{
konst[pair->Value.KonstNum].v = pair->Key;
tags[pair->Value.KonstNum] = pair->Value.Tag;
}
memcpy(konst, &AddressConstantList[0], sizeof(void*) * AddressConstantList.Size());
memcpy(tags, &AtagConstantList[0], sizeof(VM_ATAG) * AtagConstantList.Size());
}
//==========================================================================
@ -170,12 +148,9 @@ void VMFunctionBuilder::FillAddressConstants(FVoidObj *konst, VM_ATAG *tags)
void VMFunctionBuilder::FillStringConstants(FString *konst)
{
TMapIterator<FString, int> it(StringConstants);
TMap<FString, int>::Pair *pair;
while (it.NextPair(pair))
for (auto &s : StringConstantList)
{
konst[pair->Value] = pair->Key;
*konst++ = s;
}
}
@ -183,22 +158,21 @@ void VMFunctionBuilder::FillStringConstants(FString *konst)
//
// VMFunctionBuilder :: GetConstantInt
//
// Returns a constant register initialized with the given value, or -1 if
// there were no more constants free.
// Returns a constant register initialized with the given value.
//
//==========================================================================
int VMFunctionBuilder::GetConstantInt(int val)
unsigned VMFunctionBuilder::GetConstantInt(int val)
{
int *locp = IntConstants.CheckKey(val);
unsigned int *locp = IntConstantMap.CheckKey(val);
if (locp != NULL)
{
return *locp;
}
else
{
int loc = NumIntConstants++;
IntConstants.Insert(val, loc);
unsigned loc = IntConstantList.Push(val);
IntConstantMap.Insert(val, loc);
return loc;
}
}
@ -207,22 +181,21 @@ int VMFunctionBuilder::GetConstantInt(int val)
//
// VMFunctionBuilder :: GetConstantFloat
//
// Returns a constant register initialized with the given value, or -1 if
// there were no more constants free.
// Returns a constant register initialized with the given value.
//
//==========================================================================
int VMFunctionBuilder::GetConstantFloat(double val)
unsigned VMFunctionBuilder::GetConstantFloat(double val)
{
int *locp = FloatConstants.CheckKey(val);
unsigned *locp = FloatConstantMap.CheckKey(val);
if (locp != NULL)
{
return *locp;
}
else
{
int loc = NumFloatConstants++;
FloatConstants.Insert(val, loc);
unsigned loc = FloatConstantList.Push(val);
FloatConstantMap.Insert(val, loc);
return loc;
}
}
@ -231,22 +204,21 @@ int VMFunctionBuilder::GetConstantFloat(double val)
//
// VMFunctionBuilder :: GetConstantString
//
// Returns a constant register initialized with the given value, or -1 if
// there were no more constants free.
// Returns a constant register initialized with the given value.
//
//==========================================================================
int VMFunctionBuilder::GetConstantString(FString val)
unsigned VMFunctionBuilder::GetConstantString(FString val)
{
int *locp = StringConstants.CheckKey(val);
unsigned *locp = StringConstantMap.CheckKey(val);
if (locp != NULL)
{
return *locp;
}
else
{
int loc = NumStringConstants++;
StringConstants.Insert(val, loc);
int loc = StringConstantList.Push(val);
StringConstantMap.Insert(val, loc);
return loc;
}
}
@ -260,13 +232,13 @@ int VMFunctionBuilder::GetConstantString(FString val)
//
//==========================================================================
int VMFunctionBuilder::GetConstantAddress(void *ptr, VM_ATAG tag)
unsigned VMFunctionBuilder::GetConstantAddress(void *ptr, VM_ATAG tag)
{
if (ptr == NULL)
{ // Make all NULL pointers generic. (Or should we allow typed NULLs?)
tag = ATAG_GENERIC;
}
AddrKonst *locp = AddressConstants.CheckKey(ptr);
AddrKonst *locp = AddressConstantMap.CheckKey(ptr);
if (locp != NULL)
{
// There should only be one tag associated with a memory location.
@ -275,12 +247,71 @@ int VMFunctionBuilder::GetConstantAddress(void *ptr, VM_ATAG tag)
}
else
{
AddrKonst loc = { NumAddressConstants++, tag };
AddressConstants.Insert(ptr, loc);
unsigned locc = AddressConstantList.Push(ptr);
AtagConstantList.Push(tag);
AddrKonst loc = { locc, tag };
AddressConstantMap.Insert(ptr, loc);
return loc.KonstNum;
}
}
//==========================================================================
//
// VMFunctionBuilder :: AllocConstants*
//
// Returns a range of constant register initialized with the given values.
//
//==========================================================================
unsigned VMFunctionBuilder::AllocConstantsInt(unsigned count, int *values)
{
unsigned addr = IntConstantList.Reserve(count);
memcpy(&IntConstantList[addr], values, count * sizeof(int));
for (unsigned i = 0; i < count; i++)
{
IntConstantMap.Insert(values[i], addr + i);
}
return addr;
}
unsigned VMFunctionBuilder::AllocConstantsFloat(unsigned count, double *values)
{
unsigned addr = FloatConstantList.Reserve(count);
memcpy(&FloatConstantList[addr], values, count * sizeof(double));
for (unsigned i = 0; i < count; i++)
{
FloatConstantMap.Insert(values[i], addr + i);
}
return addr;
}
unsigned VMFunctionBuilder::AllocConstantsAddress(unsigned count, void **ptrs, VM_ATAG tag)
{
unsigned addr = AddressConstantList.Reserve(count);
AtagConstantList.Reserve(count);
memcpy(&AddressConstantList[addr], ptrs, count * sizeof(void *));
for (unsigned i = 0; i < count; i++)
{
AtagConstantList[addr + i] = tag;
AddrKonst loc = { addr+i, tag };
AddressConstantMap.Insert(ptrs[i], loc);
}
return addr;
}
unsigned VMFunctionBuilder::AllocConstantsString(unsigned count, FString *ptrs)
{
unsigned addr = StringConstantList.Reserve(count);
for (unsigned i = 0; i < count; i++)
{
StringConstantList[addr + i] = ptrs[i];
StringConstantMap.Insert(ptrs[i], addr + i);
}
return addr;
}
//==========================================================================
//
// VMFunctionBuilder :: ParamChange

35
src/scripting/vm/vmbuilder.h
View file

@ -42,10 +42,16 @@ public:
void MakeFunction(VMScriptFunction *func);
// Returns the constant register holding the value.
int GetConstantInt(int val);
int GetConstantFloat(double val);
int GetConstantAddress(void *ptr, VM_ATAG tag);
int GetConstantString(FString str);
unsigned GetConstantInt(int val);
unsigned GetConstantFloat(double val);
unsigned GetConstantAddress(void *ptr, VM_ATAG tag);
unsigned GetConstantString(FString str);
unsigned AllocConstantsInt(unsigned int count, int *values);
unsigned AllocConstantsFloat(unsigned int count, double *values);
unsigned AllocConstantsAddress(unsigned int count, void **ptrs, VM_ATAG tag);
unsigned AllocConstantsString(unsigned int count, FString *ptrs);
// Returns the address of the next instruction to be emitted.
size_t GetAddress();
@ -82,19 +88,20 @@ public:
private:
struct AddrKonst
{
int KonstNum;
unsigned KonstNum;
VM_ATAG Tag;
};
// These map from the constant value to its position in the constant table.
TMap<int, int> IntConstants;
TMap<double, int> FloatConstants;
TMap<void *, AddrKonst> AddressConstants;
TMap<FString, int> StringConstants;
int NumIntConstants;
int NumFloatConstants;
int NumAddressConstants;
int NumStringConstants;
TArray<int> IntConstantList;
TArray<double> FloatConstantList;
TArray<void *> AddressConstantList;
TArray<VM_ATAG> AtagConstantList;
TArray<FString> StringConstantList;
// These map from the constant value to its position in the constant table.
TMap<int, unsigned> IntConstantMap;
TMap<double, unsigned> FloatConstantMap;
TMap<void *, AddrKonst> AddressConstantMap;
TMap<FString, unsigned> StringConstantMap;
int MaxParam;
int ActiveParam;

3
src/scripting/vm/vmdisasm.cpp
View file

@ -97,6 +97,9 @@
#define RIRIRI MODE_AI | MODE_BI | MODE_CI
#define RIRII8 MODE_AI | MODE_BI | MODE_CIMMZ
#define RFRII8 MODE_AF | MODE_BI | MODE_CIMMZ
#define RPRII8 MODE_AP | MODE_BI | MODE_CIMMZ
#define RSRII8 MODE_AS | MODE_BI | MODE_CIMMZ
#define RIRIKI MODE_AI | MODE_BI | MODE_CKI
#define RIKIRI MODE_AI | MODE_BKI | MODE_CI
#define RIKII8 MODE_AI | MODE_BKI | MODE_CIMMZ

20
src/scripting/vm/vmexec.h
View file

@ -84,6 +84,26 @@ begin:
reg.a[a] = konsta[BC].v;
reg.atag[a] = konstatag[BC];
NEXTOP;
OP(LK_R) :
ASSERTD(a); ASSERTD(B);
reg.d[a] = konstd[reg.d[B] + C];
NEXTOP;
OP(LKF_R) :
ASSERTF(a); ASSERTD(B);
reg.f[a] = konstf[reg.d[B] + C];
NEXTOP;
OP(LKS_R) :
ASSERTS(a); ASSERTD(B);
reg.s[a] = konsts[reg.d[B] + C];
NEXTOP;
OP(LKP_R) :
ASSERTA(a); ASSERTD(B);
b = reg.d[B] + C;
reg.a[a] = konsta[b].v;
reg.atag[a] = konstatag[b];
NEXTOP;
OP(LFP):
ASSERTA(a); assert(sfunc != NULL); assert(sfunc->ExtraSpace > 0);
reg.a[a] = f->GetExtra();

4
src/scripting/vm/vmops.h
View file

@ -10,6 +10,10 @@ xx(LK, lk, LKI), // load integer constant
xx(LKF, lk, LKF), // load float constant
xx(LKS, lk, LKS), // load string constant
xx(LKP, lk, LKP), // load pointer constant
xx(LK_R, lk, RIRII8), // load integer constant indexed
xx(LKF_R, lk, RFRII8), // load float constant indexed
xx(LKS_R, lk, RSRII8), // load string constant indexed
xx(LKP_R, lk, RPRII8), // load pointer constant indexed
xx(LFP, lf, LFP), // load frame pointer
// Load from memory. rA = *(rB + rkC)

10
src/scripting/zscript/ast.cpp
View file

@ -595,6 +595,16 @@ static void PrintExprClassCast(FLispString &out, ZCC_TreeNode *node)
out.Close();
}
static void PrintStaticArray(FLispString &out, ZCC_TreeNode *node)
{
ZCC_StaticArrayStatement *enode = (ZCC_StaticArrayStatement *)node;
out.Open("static-array-stmt");
PrintNodes(out, enode->Type, false);
out.AddName(enode->Id);
PrintNodes(out, enode->Values, false);
out.Close();
}
static void PrintExprMemberAccess(FLispString &out, ZCC_TreeNode *node)
{
ZCC_ExprMemberAccess *enode = (ZCC_ExprMemberAccess *)node;

23
src/scripting/zscript/zcc-parse.lemon
View file

@ -1559,6 +1559,29 @@ statement(X) ::= jump_statement(X).
statement(X) ::= assign_statement(A) SEMICOLON. { X = A; /*X-overwrites-A*/ }
statement(X) ::= local_var(A) SEMICOLON. { X = A; /*X-overwrites-A*/ }
statement(X) ::= error SEMICOLON. { X = NULL; }
statement(X) ::= staticarray_statement(A). { X = A; /*X-overwrites-A*/ }
/*----- Static array Statements -----*/
%type staticarray_statement{ZCC_StaticArrayStatement *}
staticarray_statement(X) ::= STATIC CONST type(A) IDENTIFIER(B) LBRACKET RBRACKET EQ LBRACE expr_list(C) RBRACE.
{
NEW_AST_NODE(StaticArrayStatement, stmt, A);
stmt->Type = A;
stmt->Id = ENamedName(B.Int);
stmt->Values = C;
X = stmt;
}
staticarray_statement(X) ::= STATIC CONST type(A) LBRACKET RBRACKET IDENTIFIER(B) EQ LBRACE expr_list(C) RBRACE.
{
NEW_AST_NODE(StaticArrayStatement, stmt, A);
stmt->Type = A;
stmt->Id = ENamedName(B.Int);
stmt->Values = C;
X = stmt;
}
/*----- Jump Statements -----*/

9
src/scripting/zscript/zcc_compile.cpp
View file

@ -2826,6 +2826,15 @@ FxExpression *ZCCCompiler::ConvertNode(ZCC_TreeNode *ast)
return new FxClassPtrCast(cls, ConvertNode(cc->Parameters));
}
case AST_StaticArrayStatement:
{
auto sas = static_cast<ZCC_StaticArrayStatement *>(ast);
PType *ztype = DetermineType(ConvertClass, sas, sas->Id, sas->Type, false, false);
FArgumentList args;
ConvertNodeList(args, sas->Values);
// This has to let the code generator resolve the constants, not the Simplifier, which lacks all the necessary type info.
return new FxStaticArray(ztype, sas->Id, args, *ast);
}
case AST_ExprMemberAccess:
{

8
src/scripting/zscript/zcc_parser.h
View file

@ -103,6 +103,7 @@ enum EZCCTreeNodeType
AST_VectorValue,
AST_DeclFlags,
AST_ClassCast,
AST_StaticArrayStatement,
NUM_AST_NODE_TYPES
};
@ -406,6 +407,13 @@ struct ZCC_Statement : ZCC_TreeNode
{
};
struct ZCC_StaticArrayStatement : ZCC_Statement
{
ZCC_Type *Type;
ENamedName Id;
ZCC_Expression *Values;
};
struct ZCC_CompoundStmt : ZCC_Statement
{
ZCC_Statement *Content;