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vmmethod.hpp
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vmmethod.hpp
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#ifndef RBX_VMMETHOD_HPP
#define RBX_VMMETHOD_HPP
#include <vector>
#include "executor.hpp"
#include "gc/root.hpp"
#include "primitives.hpp"
#include "type_info.hpp"
#include "unwind_info.hpp"
#include "vm/builtin/compiledmethod.hpp"
#include "gc/code_resource.hpp"
#ifdef ENABLE_LLVM
namespace llvm {
class Function;
}
#endif
namespace rubinius {
typedef void* instlocation;
typedef uintptr_t opcode;
typedef uint32_t bpflags;
typedef std::list<Object**> IndirectLiterals;
class CompiledMethod;
class MethodContext;
class SendSite;
class VMMethod;
class InterpreterCallFrame;
class InlineCache;
typedef Object* (*Runner)(STATE, VMMethod* const vmm, CallFrame* const call_frame);
typedef Object* (*InterpreterRunner)(STATE, VMMethod* const vmm,
InterpreterCallFrame* const call_frame);
class VMMethod : public CodeResource {
public:
static void** instructions;
private:
IndirectLiterals indirect_literals_;
VMMethod* parent_;
public:
InterpreterRunner run;
opcode* opcodes;
void** addresses;
std::size_t total;
TypeInfo* type;
native_int total_args;
native_int required_args;
native_int splat_position;
native_int stack_size;
native_int number_of_locals;
native_int call_count;
native_int uncommon_count;
size_t number_of_caches_;
InlineCache* caches;
#ifdef ENABLE_LLVM
private:
llvm::Function* llvm_function_;
size_t jitted_bytes_;
void* jitted_impl_;
#endif
Symbol* name_;
uint64_t method_id_;
public:
uint32_t debugging;
public: // Methods
static void init(STATE);
VMMethod(STATE, CompiledMethod* meth);
virtual ~VMMethod();
virtual void cleanup(CodeManager* cm);
virtual int size();
#ifdef ENABLE_LLVM
bool jitted() {
return jitted_impl_ != 0;
}
void set_jitted(llvm::Function* func, size_t bytes, void* impl) {
llvm_function_ = func;
jitted_impl_ = impl;
jitted_bytes_ = bytes;
}
void* native_function() {
return jitted_impl_;
}
llvm::Function* llvm_function() {
return llvm_function_;
}
void* jitted_impl() {
return jitted_impl_;
}
size_t jitted_bytes() {
return jitted_bytes_;
}
#else
bool jitted() {
return false;
}
#endif
void update_addresses(int index, int operands=0) {
addresses[index] = instructions[opcodes[index]];
switch(operands) {
case 2:
addresses[index + 2] = reinterpret_cast<void*>(opcodes[index + 2]);
// fall through
case 1:
addresses[index + 1] = reinterpret_cast<void*>(opcodes[index + 1]);
}
}
size_t inline_cache_count() {
return number_of_caches_;
}
IndirectLiterals& indirect_literals() {
return indirect_literals_;
}
VMMethod* parent() {
return parent_;
}
void set_parent(VMMethod* parent) {
parent_ = parent;
}
bool for_block() {
return parent_ != 0;
}
Symbol* name() {
return name_;
}
uint64_t method_id() {
return method_id_;
}
void specialize(STATE, CompiledMethod* original, TypeInfo* ti);
void compile(STATE);
static Object* execute(STATE, CallFrame* call_frame, Dispatch& msg, Arguments& args);
template <typename ArgumentHandler>
static Object* execute_specialized(STATE, CallFrame* call_frame, Dispatch& msg, Arguments& args);
struct InterpreterState {
bool allow_private;
int call_flags;
InterpreterState()
: allow_private(false)
, call_flags(0)
{}
};
/**
* Dispatch method on the defined interpreter.
*/
static Object* run_interpreter(STATE, VMMethod* const vmm,
InterpreterCallFrame* const call_frame);
/**
* Interpreting implementation.
*
* @see vm/llvm/instructions.cpp for the code.
*/
static Object* interpreter(STATE, VMMethod* const vmm,
InterpreterCallFrame* const call_frame);
static Object* debugger_interpreter(STATE, VMMethod* const vmm,
InterpreterCallFrame* const call_frame);
static Object* debugger_interpreter_continue(STATE,
VMMethod* const vmm,
CallFrame* const call_frame,
int sp,
InterpreterState& is,
int current_unwind,
UnwindInfo* unwinds);
static Object* uncommon_interpreter(STATE, VMMethod* const vmm,
CallFrame* const call_frame, int32_t entry_ip, native_int sp,
CallFrame* const method_call_frame,
int32_t unwind_count, int32_t* unwinds);
void setup_argument_handler(CompiledMethod* meth);
bool validate_ip(STATE, size_t ip);
void fill_opcodes(STATE, CompiledMethod* original);
void initialize_caches(STATE, CompiledMethod* original, int sends);
void find_super_instructions();
void deoptimize(STATE, CompiledMethod* original);
/*
* Helper class for iterating over an Opcode array. Used to convert a
* VMMethod to an LLVM method.
*/
class Iterator {
public:
opcode* stream_;
size_t position_;
size_t size_;
Iterator(VMMethod* vmm)
: stream_(vmm->opcodes)
, position_(0)
, size_(vmm->total)
{}
Iterator(opcode* stream, size_t size)
: stream_(stream)
, position_(0)
, size_(size)
{}
size_t position() {
return position_;
}
size_t next_position() {
return position_ + width();
}
void inc() {
position_ += width();
}
bool advance() {
size_t next = next_position();
if(next >= size_) return false;
position_ = next;
return true;
}
bool last_instruction() {
return next_position() >= size_;
}
opcode op() {
return stream_[position_] & 0x00ffff;
}
opcode operand1() {
return stream_[position_ + 1];
}
opcode operand2() {
return stream_[position_ + 2];
}
int next_pos() {
return position_ + width();
}
opcode next() {
return stream_[next_pos()];
}
size_t width() {
opcode op = this->op();
#include "gen/instruction_sizes.hpp"
return width;
}
size_t args() {
return width() - 1;
}
bool end() {
return position_ >= size_;
}
};
};
};
#endif