godot/modules/gdscript/gdscript_disassembler.cpp
George Marques 52ab64db69
GDScript: Add faster call instructions for builtin methods
Methods from builtin types can be called by using the function pointer
when the argument and base types are known at compile time.
2020-11-21 13:24:50 -03:00

743 lines
19 KiB
C++

/*************************************************************************/
/* gdscript_disassembler.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifdef DEBUG_ENABLED
#include "gdscript_function.h"
#include "core/string/string_builder.h"
#include "gdscript.h"
#include "gdscript_functions.h"
static String _get_variant_string(const Variant &p_variant) {
String txt;
if (p_variant.get_type() == Variant::STRING) {
txt = "\"" + String(p_variant) + "\"";
} else if (p_variant.get_type() == Variant::STRING_NAME) {
txt = "&\"" + String(p_variant) + "\"";
} else if (p_variant.get_type() == Variant::NODE_PATH) {
txt = "^\"" + String(p_variant) + "\"";
} else if (p_variant.get_type() == Variant::OBJECT) {
Object *obj = p_variant;
if (!obj) {
txt = "null";
} else {
GDScriptNativeClass *cls = Object::cast_to<GDScriptNativeClass>(obj);
if (cls) {
txt += cls->get_name();
txt += " (class)";
} else {
txt = obj->get_class();
if (obj->get_script_instance()) {
txt += "(" + obj->get_script_instance()->get_script()->get_path() + ")";
}
}
}
} else {
txt = p_variant;
}
return txt;
}
static String _disassemble_address(const GDScript *p_script, const GDScriptFunction &p_function, int p_address) {
int addr = p_address & GDScriptFunction::ADDR_MASK;
switch (p_address >> GDScriptFunction::ADDR_BITS) {
case GDScriptFunction::ADDR_TYPE_SELF: {
return "self";
} break;
case GDScriptFunction::ADDR_TYPE_CLASS: {
return "class";
} break;
case GDScriptFunction::ADDR_TYPE_MEMBER: {
return "member(" + p_script->debug_get_member_by_index(addr) + ")";
} break;
case GDScriptFunction::ADDR_TYPE_CLASS_CONSTANT: {
return "class_const(" + p_function.get_global_name(addr) + ")";
} break;
case GDScriptFunction::ADDR_TYPE_LOCAL_CONSTANT: {
return "const(" + _get_variant_string(p_function.get_constant(addr)) + ")";
} break;
case GDScriptFunction::ADDR_TYPE_STACK: {
return "stack(" + itos(addr) + ")";
} break;
case GDScriptFunction::ADDR_TYPE_STACK_VARIABLE: {
return "var_stack(" + itos(addr) + ")";
} break;
case GDScriptFunction::ADDR_TYPE_GLOBAL: {
return "global(" + _get_variant_string(GDScriptLanguage::get_singleton()->get_global_array()[addr]) + ")";
} break;
case GDScriptFunction::ADDR_TYPE_NAMED_GLOBAL: {
return "named_global(" + p_function.get_global_name(addr) + ")";
} break;
case GDScriptFunction::ADDR_TYPE_NIL: {
return "nil";
} break;
}
return "<err>";
}
void GDScriptFunction::disassemble(const Vector<String> &p_code_lines) const {
#define DADDR(m_ip) (_disassemble_address(_script, *this, _code_ptr[ip + m_ip]))
for (int ip = 0; ip < _code_size;) {
StringBuilder text;
int incr = 0;
text += " ";
text += itos(ip);
text += ": ";
// This makes the compiler complain if some opcode is unchecked in the switch.
Opcode code = Opcode(_code_ptr[ip] & INSTR_MASK);
int instr_var_args = (_code_ptr[ip] & INSTR_ARGS_MASK) >> INSTR_BITS;
switch (code) {
case OPCODE_OPERATOR: {
int operation = _code_ptr[ip + 4];
text += "operator ";
text += DADDR(3);
text += " = ";
text += DADDR(1);
text += " ";
text += Variant::get_operator_name(Variant::Operator(operation));
text += " ";
text += DADDR(2);
incr += 5;
} break;
case OPCODE_OPERATOR_VALIDATED: {
text += "validated operator ";
text += DADDR(3);
text += " = ";
text += DADDR(1);
text += " <operator function> ";
text += DADDR(2);
incr += 5;
} break;
case OPCODE_EXTENDS_TEST: {
text += "is object ";
text += DADDR(3);
text += " = ";
text += DADDR(1);
text += " is ";
text += DADDR(2);
incr += 4;
} break;
case OPCODE_IS_BUILTIN: {
text += "is builtin ";
text += DADDR(2);
text += " = ";
text += DADDR(1);
text += " is ";
text += Variant::get_type_name(Variant::Type(_code_ptr[ip + 3]));
incr += 4;
} break;
case OPCODE_SET_KEYED: {
text += "set keyed ";
text += DADDR(1);
text += "[";
text += DADDR(2);
text += "] = ";
text += DADDR(3);
incr += 4;
} break;
case OPCODE_SET_KEYED_VALIDATED: {
text += "set keyed validated ";
text += DADDR(1);
text += "[";
text += DADDR(2);
text += "] = ";
text += DADDR(3);
incr += 5;
} break;
case OPCODE_SET_INDEXED_VALIDATED: {
text += "set indexed validated ";
text += DADDR(1);
text += "[";
text += DADDR(2);
text += "] = ";
text += DADDR(3);
incr += 5;
} break;
case OPCODE_GET_KEYED: {
text += "get keyed ";
text += DADDR(3);
text += " = ";
text += DADDR(1);
text += "[";
text += DADDR(2);
text += "]";
incr += 4;
} break;
case OPCODE_GET_KEYED_VALIDATED: {
text += "get keyed validated ";
text += DADDR(3);
text += " = ";
text += DADDR(1);
text += "[";
text += DADDR(2);
text += "]";
incr += 5;
} break;
case OPCODE_GET_INDEXED_VALIDATED: {
text += "get indexed validated ";
text += DADDR(3);
text += " = ";
text += DADDR(1);
text += "[";
text += DADDR(2);
text += "]";
incr += 5;
} break;
case OPCODE_SET_NAMED: {
text += "set_named ";
text += DADDR(1);
text += "[\"";
text += _global_names_ptr[_code_ptr[ip + 3]];
text += "\"] = ";
text += DADDR(2);
incr += 4;
} break;
case OPCODE_SET_NAMED_VALIDATED: {
text += "set_named validated ";
text += DADDR(1);
text += "[\"";
text += "<unknown name>";
text += "\"] = ";
text += DADDR(2);
incr += 4;
} break;
case OPCODE_GET_NAMED: {
text += "get_named ";
text += DADDR(2);
text += " = ";
text += DADDR(1);
text += "[\"";
text += _global_names_ptr[_code_ptr[ip + 3]];
text += "\"]";
incr += 4;
} break;
case OPCODE_GET_NAMED_VALIDATED: {
text += "get_named validated ";
text += DADDR(2);
text += " = ";
text += DADDR(1);
text += "[\"";
text += "<unknown name>";
text += "\"]";
incr += 4;
} break;
case OPCODE_SET_MEMBER: {
text += "set_member ";
text += "[\"";
text += _global_names_ptr[_code_ptr[ip + 2]];
text += "\"] = ";
text += DADDR(1);
incr += 3;
} break;
case OPCODE_GET_MEMBER: {
text += "get_member ";
text += DADDR(1);
text += " = ";
text += "[\"";
text += _global_names_ptr[_code_ptr[ip + 2]];
text += "\"]";
incr += 3;
} break;
case OPCODE_ASSIGN: {
text += "assign ";
text += DADDR(1);
text += " = ";
text += DADDR(2);
incr += 3;
} break;
case OPCODE_ASSIGN_TRUE: {
text += "assign ";
text += DADDR(1);
text += " = true";
incr += 2;
} break;
case OPCODE_ASSIGN_FALSE: {
text += "assign ";
text += DADDR(1);
text += " = false";
incr += 2;
} break;
case OPCODE_ASSIGN_TYPED_BUILTIN: {
text += "assign typed builtin (";
text += Variant::get_type_name((Variant::Type)_code_ptr[ip + 3]);
text += ") ";
text += DADDR(1);
text += " = ";
text += DADDR(2);
incr += 4;
} break;
case OPCODE_ASSIGN_TYPED_NATIVE: {
Variant class_name = _constants_ptr[_code_ptr[ip + 3]];
GDScriptNativeClass *nc = Object::cast_to<GDScriptNativeClass>(class_name.operator Object *());
text += "assign typed native (";
text += nc->get_name().operator String();
text += ") ";
text += DADDR(1);
text += " = ";
text += DADDR(2);
incr += 4;
} break;
case OPCODE_ASSIGN_TYPED_SCRIPT: {
Variant script = _constants_ptr[_code_ptr[ip + 3]];
Script *sc = Object::cast_to<Script>(script.operator Object *());
text += "assign typed script (";
text += sc->get_path();
text += ") ";
text += DADDR(1);
text += " = ";
text += DADDR(2);
incr += 4;
} break;
case OPCODE_CAST_TO_BUILTIN: {
text += "cast builtin ";
text += DADDR(2);
text += " = ";
text += DADDR(1);
text += " as ";
text += Variant::get_type_name(Variant::Type(_code_ptr[ip + 1]));
incr += 4;
} break;
case OPCODE_CAST_TO_NATIVE: {
Variant class_name = _constants_ptr[_code_ptr[ip + 1]];
GDScriptNativeClass *nc = Object::cast_to<GDScriptNativeClass>(class_name.operator Object *());
text += "cast native ";
text += DADDR(2);
text += " = ";
text += DADDR(1);
text += " as ";
text += nc->get_name();
incr += 4;
} break;
case OPCODE_CAST_TO_SCRIPT: {
text += "cast ";
text += DADDR(2);
text += " = ";
text += DADDR(1);
text += " as ";
text += DADDR(3);
incr += 4;
} break;
case OPCODE_CONSTRUCT: {
Variant::Type t = Variant::Type(_code_ptr[ip + 3 + instr_var_args]);
int argc = _code_ptr[ip + 2 + instr_var_args];
text += "construct ";
text += DADDR(1 + argc);
text += " = ";
text += Variant::get_type_name(t) + "(";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(i + 1);
}
text += ")";
incr = 3 + instr_var_args;
} break;
case OPCODE_CONSTRUCT_ARRAY: {
int argc = _code_ptr[ip + 1 + instr_var_args];
text += " make_array ";
text += DADDR(1 + argc);
text += " = [";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i);
}
text += "]";
incr += 3 + argc;
} break;
case OPCODE_CONSTRUCT_DICTIONARY: {
int argc = _code_ptr[ip + 1 + instr_var_args];
text += "make_dict ";
text += DADDR(1 + argc * 2);
text += " = {";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i * 2 + 0);
text += ": ";
text += DADDR(1 + i * 2 + 1);
}
text += "}";
incr += 3 + argc * 2;
} break;
case OPCODE_CALL:
case OPCODE_CALL_RETURN:
case OPCODE_CALL_ASYNC: {
bool ret = (_code_ptr[ip] & INSTR_MASK) == OPCODE_CALL_RETURN;
bool async = (_code_ptr[ip] & INSTR_MASK) == OPCODE_CALL_ASYNC;
if (ret) {
text += "call-ret ";
} else if (async) {
text += "call-async ";
} else {
text += "call ";
}
int argc = _code_ptr[ip + 1 + instr_var_args];
if (ret || async) {
text += DADDR(2 + argc) + " = ";
}
text += DADDR(1 + argc) + ".";
text += String(_global_names_ptr[_code_ptr[ip + 2 + instr_var_args]]);
text += "(";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i);
}
text += ")";
incr = 5 + argc;
} break;
case OPCODE_CALL_METHOD_BIND:
case OPCODE_CALL_METHOD_BIND_RET: {
bool ret = (_code_ptr[ip] & INSTR_MASK) == OPCODE_CALL_METHOD_BIND_RET;
if (ret) {
text += "call-method_bind-ret ";
} else {
text += "call-method_bind ";
}
MethodBind *method = _methods_ptr[_code_ptr[ip + 2 + instr_var_args]];
int argc = _code_ptr[ip + 1 + instr_var_args];
if (ret) {
text += DADDR(2 + argc) + " = ";
}
text += DADDR(1 + argc) + ".";
text += method->get_name();
text += "(";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i);
}
text += ")";
incr = 5 + argc;
} break;
case OPCODE_CALL_PTRCALL_NO_RETURN: {
text += "call-ptrcall (no return) ";
MethodBind *method = _methods_ptr[_code_ptr[ip + 2 + instr_var_args]];
int argc = _code_ptr[ip + 1 + instr_var_args];
text += DADDR(1 + argc) + ".";
text += method->get_name();
text += "(";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i);
}
text += ")";
incr = 5 + argc;
} break;
#define DISASSEMBLE_PTRCALL(m_type) \
case OPCODE_CALL_PTRCALL_##m_type: { \
text += "call-ptrcall (return "; \
text += #m_type; \
text += ") "; \
MethodBind *method = _methods_ptr[_code_ptr[ip + 2 + instr_var_args]]; \
int argc = _code_ptr[ip + 1 + instr_var_args]; \
text += DADDR(2 + argc) + " = "; \
text += DADDR(1 + argc) + "."; \
text += method->get_name(); \
text += "("; \
for (int i = 0; i < argc; i++) { \
if (i > 0) \
text += ", "; \
text += DADDR(1 + i); \
} \
text += ")"; \
incr = 5 + argc; \
} break
DISASSEMBLE_PTRCALL(BOOL);
DISASSEMBLE_PTRCALL(INT);
DISASSEMBLE_PTRCALL(FLOAT);
DISASSEMBLE_PTRCALL(STRING);
DISASSEMBLE_PTRCALL(VECTOR2);
DISASSEMBLE_PTRCALL(VECTOR2I);
DISASSEMBLE_PTRCALL(RECT2);
DISASSEMBLE_PTRCALL(RECT2I);
DISASSEMBLE_PTRCALL(VECTOR3);
DISASSEMBLE_PTRCALL(VECTOR3I);
DISASSEMBLE_PTRCALL(TRANSFORM2D);
DISASSEMBLE_PTRCALL(PLANE);
DISASSEMBLE_PTRCALL(AABB);
DISASSEMBLE_PTRCALL(BASIS);
DISASSEMBLE_PTRCALL(TRANSFORM);
DISASSEMBLE_PTRCALL(COLOR);
DISASSEMBLE_PTRCALL(STRING_NAME);
DISASSEMBLE_PTRCALL(NODE_PATH);
DISASSEMBLE_PTRCALL(RID);
DISASSEMBLE_PTRCALL(QUAT);
DISASSEMBLE_PTRCALL(OBJECT);
DISASSEMBLE_PTRCALL(CALLABLE);
DISASSEMBLE_PTRCALL(SIGNAL);
DISASSEMBLE_PTRCALL(DICTIONARY);
DISASSEMBLE_PTRCALL(ARRAY);
DISASSEMBLE_PTRCALL(PACKED_BYTE_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_INT32_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_INT64_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_FLOAT32_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_FLOAT64_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_STRING_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_VECTOR2_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_VECTOR3_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_COLOR_ARRAY);
case OPCODE_CALL_BUILTIN_TYPE_VALIDATED: {
int argc = _code_ptr[ip + 1 + instr_var_args];
text += "call-builtin-method validated ";
text += DADDR(2 + argc) + " = ";
text += DADDR(1) + ".";
text += "<unknown method>";
text += "(";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i);
}
text += ")";
incr = 5 + argc;
} break;
case OPCODE_CALL_BUILT_IN: {
text += "call-built-in ";
int argc = _code_ptr[ip + 1 + instr_var_args];
text += DADDR(1 + argc) + " = ";
text += GDScriptFunctions::get_func_name(GDScriptFunctions::Function(_code_ptr[ip + 2 + instr_var_args]));
text += "(";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i);
}
text += ")";
incr = 4 + argc;
} break;
case OPCODE_CALL_SELF_BASE: {
text += "call-self-base ";
int argc = _code_ptr[ip + 1 + instr_var_args];
text += DADDR(2 + argc) + " = ";
text += _global_names_ptr[_code_ptr[ip + 2 + instr_var_args]];
text += "(";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i);
}
text += ")";
incr = 4 + argc;
} break;
case OPCODE_AWAIT: {
text += "await ";
text += DADDR(1);
incr += 2;
} break;
case OPCODE_AWAIT_RESUME: {
text += "await resume ";
text += DADDR(1);
incr = 2;
} break;
case OPCODE_JUMP: {
text += "jump ";
text += itos(_code_ptr[ip + 1]);
incr = 2;
} break;
case OPCODE_JUMP_IF: {
text += "jump-if ";
text += DADDR(1);
text += " to ";
text += itos(_code_ptr[ip + 2]);
incr = 3;
} break;
case OPCODE_JUMP_IF_NOT: {
text += "jump-if-not ";
text += DADDR(1);
text += " to ";
text += itos(_code_ptr[ip + 2]);
incr = 3;
} break;
case OPCODE_JUMP_TO_DEF_ARGUMENT: {
text += "jump-to-default-argument ";
incr = 1;
} break;
case OPCODE_RETURN: {
text += "return ";
text += DADDR(1);
incr = 2;
} break;
case OPCODE_ITERATE_BEGIN: {
text += "for-init ";
text += DADDR(3);
text += " in ";
text += DADDR(2);
text += " counter ";
text += DADDR(1);
text += " end ";
text += itos(_code_ptr[ip + 4]);
incr += 5;
} break;
case OPCODE_ITERATE: {
text += "for-loop ";
text += DADDR(2);
text += " in ";
text += DADDR(2);
text += " counter ";
text += DADDR(1);
text += " end ";
text += itos(_code_ptr[ip + 4]);
incr += 5;
} break;
case OPCODE_LINE: {
int line = _code_ptr[ip + 1] - 1;
if (line >= 0 && line < p_code_lines.size()) {
text += "line ";
text += itos(line + 1);
text += ": ";
text += p_code_lines[line];
} else {
text += "";
}
incr += 2;
} break;
case OPCODE_ASSERT: {
text += "assert (";
text += DADDR(1);
text += ", ";
text += DADDR(2);
text += ")";
incr += 3;
} break;
case OPCODE_BREAKPOINT: {
text += "breakpoint";
incr += 1;
} break;
case OPCODE_END: {
text += "== END ==";
incr += 1;
} break;
}
ip += incr;
if (text.get_string_length() > 0) {
print_line(text.as_string());
}
}
}
#endif