inline ExceptionContinuation unwind(STATE, CallFrame* call_frame) {
VMThreadState* th = state->vm()->thread_state();
switch(th->raise_reason()) {
case cException:
if(UnwindSite* unwind_site = call_frame->unwind) {
if(unwind_site->unwind_type() == UnwindSite::eRescue) {
return cExceptionRescue;
} else if(unwind_site->unwind_type() == UnwindSite::eEnsure) {
return cExceptionEnsure;
}
}
call_frame->scope->flush_to_heap(state);
break;
case cBreak:
// If we're trying to break to here, we're done!
if(th->destination_scope() == call_frame->scope->on_heap()) {
stack_push(th->raise_value());
th->clear_break();
// Don't return here, because we want to continue running this method.
return cExceptionBreak;
}
// Fall through.
case cReturn:
case cCatchThrow:
case cThreadKill:
// Nonlocal return, run ensure blocks.
while(UnwindSite* unwind_site = call_frame->unwind) {
if(unwind_site->unwind_type() == UnwindSite::eEnsure) {
return cExceptionEnsure;
} else {
call_frame->pop_unwind();
}
}
// Ok, no ensures to run.
if(th->raise_reason() == cReturn) {
call_frame->scope->flush_to_heap(state);
// If we're trying to return to here, we're done!
if(th->destination_scope() == call_frame->scope->on_heap()) {
stack_push(th->raise_value());
th->clear_return();
return cExceptionReturn;
}
} else { // Not for us!
call_frame->scope->flush_to_heap(state);
}
break;
case cExit:
call_frame->scope->flush_to_heap(state);
break;
case cFiberCancel:
break;
case cNone:
Exception::interpreter_error(state, "no exception available for unwind handler");
break;
} // switch
return cExceptionUnwind;
}
Object* MachineCode::debugger_interpreter_continue(STATE,
MachineCode* const mcode,
CallFrame* const call_frame,
int sp,
InterpreterState& is,
UnwindInfoSet& thread_unwinds)
{
#include "vm/gen/instruction_locations.hpp"
GCTokenImpl gct;
opcode* stream = mcode->opcodes;
Object** stack_ptr = call_frame->stk + sp;
UnwindInfoSet unwinds(thread_unwinds);
continue_to_run:
try {
#undef DISPATCH
#define DISPATCH \
if(Object* bp = call_frame->find_breakpoint(state)) { \
if(!Helpers::yield_debugger(state, gct, call_frame, bp)) goto exception; \
} \
goto *insn_locations[stream[call_frame->inc_ip()]];
#undef next_int
#undef cache_ip
#undef flush_ip
#define next_int ((opcode)(stream[call_frame->inc_ip()]))
#define cache_ip(which)
#define flush_ip()
#include "vm/gen/instruction_implementations.hpp"
} catch(TypeError& e) {
flush_ip();
Exception* exc =
Exception::make_type_error(state, e.type, e.object, e.reason);
exc->locations(state, Location::from_call_stack(state, call_frame));
state->raise_exception(exc);
call_frame->scope->flush_to_heap(state);
return NULL;
} catch(const RubyException& exc) {
exc.exception->locations(state,
Location::from_call_stack(state, call_frame));
state->raise_exception(exc.exception);
return NULL;
}
// No reason to be here!
rubinius::bug("Control flow error in interpreter");
exception:
VMThreadState* th = state->vm()->thread_state();
//
switch(th->raise_reason()) {
case cException:
if(unwinds.has_unwinds()) {
UnwindInfo info = unwinds.pop();
stack_position(info.stack_depth);
call_frame->set_ip(info.target_ip);
cache_ip(info.target_ip);
goto continue_to_run;
} else {
call_frame->scope->flush_to_heap(state);
return NULL;
}
case cBreak:
// If we're trying to break to here, we're done!
if(th->destination_scope() == call_frame->scope->on_heap()) {
stack_push(th->raise_value());
th->clear_break();
goto continue_to_run;
// Don't return here, because we want to loop back to the top
// and keep running this method.
}
// Otherwise, fall through and run the unwinds
case cReturn:
case cCatchThrow:
case cThreadKill:
// Otherwise, we're doing a long return/break unwind through
// here. We need to run ensure blocks.
while(unwinds.has_unwinds()) {
UnwindInfo info = unwinds.pop();
if(info.for_ensure()) {
stack_position(info.stack_depth);
call_frame->set_ip(info.target_ip);
cache_ip(info.target_ip);
// Don't reset ep here, we're still handling the return/break.
goto continue_to_run;
}
}
// Ok, no ensures to run.
if(th->raise_reason() == cReturn) {
call_frame->scope->flush_to_heap(state);
// If we're trying to return to here, we're done!
if(th->destination_scope() == call_frame->scope->on_heap()) {
Object* val = th->raise_value();
th->clear_return();
return val;
} else {
// Give control of this exception to the caller.
return NULL;
}
} else { // It's cBreak thats not for us!
call_frame->scope->flush_to_heap(state);
// Give control of this exception to the caller.
return NULL;
}
case cExit:
call_frame->scope->flush_to_heap(state);
return NULL;
default:
break;
} // switch
rubinius::bug("Control flow error in interpreter");
return NULL;
}
Object* MachineCode::interpreter(STATE,
MachineCode* const mcode,
InterpreterCallFrame* const call_frame)
{
#include "vm/gen/instruction_locations.hpp"
if(unlikely(state == 0)) {
MachineCode::instructions = const_cast<void**>(insn_locations);
return NULL;
}
InterpreterState is;
GCTokenImpl gct;
register void** ip_ptr = mcode->addresses;
Object** stack_ptr = call_frame->stk - 1;
UnwindInfoSet unwinds;
continue_to_run:
try {
#undef DISPATCH
#define DISPATCH goto **ip_ptr++
#undef next_int
#define next_int ((opcode)(*ip_ptr++))
#define cache_ip(which) ip_ptr = mcode->addresses + which
#define flush_ip() call_frame->calculate_ip(ip_ptr)
#include "vm/gen/instruction_implementations.hpp"
} catch(TypeError& e) {
flush_ip();
Exception* exc =
Exception::make_type_error(state, e.type, e.object, e.reason);
exc->locations(state, Location::from_call_stack(state, call_frame));
state->raise_exception(exc);
call_frame->scope->flush_to_heap(state);
return NULL;
} catch(const RubyException& exc) {
exc.exception->locations(state,
Location::from_call_stack(state, call_frame));
state->raise_exception(exc.exception);
return NULL;
}
// There is no reason to be here. Either the bytecode loop exits,
// or it jumps to exception;
rubinius::bug("Control flow error in interpreter");
// If control finds it's way down here, there is an exception.
exception:
VMThreadState* th = state->vm()->thread_state();
//
switch(th->raise_reason()) {
case cException:
if(unwinds.has_unwinds()) {
UnwindInfo info = unwinds.pop();
stack_position(info.stack_depth);
call_frame->set_ip(info.target_ip);
cache_ip(info.target_ip);
goto continue_to_run;
} else {
call_frame->scope->flush_to_heap(state);
return NULL;
}
case cBreak:
// If we're trying to break to here, we're done!
if(th->destination_scope() == call_frame->scope->on_heap()) {
stack_push(th->raise_value());
th->clear_break();
goto continue_to_run;
// Don't return here, because we want to loop back to the top
// and keep running this method.
}
// Otherwise, fall through and run the unwinds
case cReturn:
case cCatchThrow:
case cThreadKill:
// Otherwise, we're doing a long return/break unwind through
// here. We need to run ensure blocks.
while(unwinds.has_unwinds()) {
UnwindInfo info = unwinds.pop();
if(info.for_ensure()) {
stack_position(info.stack_depth);
call_frame->set_ip(info.target_ip);
cache_ip(info.target_ip);
// Don't reset ep here, we're still handling the return/break.
goto continue_to_run;
}
}
// Ok, no ensures to run.
if(th->raise_reason() == cReturn) {
call_frame->scope->flush_to_heap(state);
// If we're trying to return to here, we're done!
if(th->destination_scope() == call_frame->scope->on_heap()) {
Object* val = th->raise_value();
th->clear_return();
return val;
} else {
// Give control of this exception to the caller.
return NULL;
}
} else { // Not for us!
call_frame->scope->flush_to_heap(state);
// Give control of this exception to the caller.
return NULL;
}
case cExit:
call_frame->scope->flush_to_heap(state);
return NULL;
default:
break;
} // switch
rubinius::bug("Control flow error in interpreter");
return NULL;
}
Object* MachineCode::uncommon_interpreter(STATE,
MachineCode* const mcode,
CallFrame* const call_frame,
int32_t entry_ip,
native_int sp,
CallFrame* const method_call_frame,
jit::RuntimeDataHolder* rd,
UnwindInfoSet& thread_unwinds)
{
MachineCode* mc = method_call_frame->compiled_code->machine_code();
if(++mc->uncommon_count > state->shared().config.jit_deoptimize_threshold) {
if(state->shared().config.jit_uncommon_print) {
std::cerr << "[[[ Deoptimizing uncommon method ]]]\n";
call_frame->print_backtrace(state);
std::cerr << "Method Call Frame:\n";
method_call_frame->print_backtrace(state);
}
mc->uncommon_count = 0;
mc->deoptimize(state, method_call_frame->compiled_code, rd);
}
#include "vm/gen/instruction_locations.hpp"
opcode* stream = mcode->opcodes;
InterpreterState is;
GCTokenImpl gct;
Object** stack_ptr = call_frame->stk + sp;
UnwindInfoSet unwinds(thread_unwinds);
continue_to_run:
try {
#undef DISPATCH
#define DISPATCH goto *insn_locations[stream[call_frame->inc_ip()]];
#undef next_int
#undef cache_ip
#undef flush_ip
#define next_int ((opcode)(stream[call_frame->inc_ip()]))
#define cache_ip(which)
#define flush_ip()
#include "vm/gen/instruction_implementations.hpp"
} catch(TypeError& e) {
flush_ip();
Exception* exc =
Exception::make_type_error(state, e.type, e.object, e.reason);
exc->locations(state, Location::from_call_stack(state, call_frame));
state->raise_exception(exc);
call_frame->scope->flush_to_heap(state);
return NULL;
} catch(const RubyException& exc) {
exc.exception->locations(state,
Location::from_call_stack(state, call_frame));
state->raise_exception(exc.exception);
return NULL;
}
// No reason to be here!
rubinius::bug("Control flow error in interpreter");
exception:
VMThreadState* th = state->vm()->thread_state();
//
switch(th->raise_reason()) {
case cException:
if(unwinds.has_unwinds()) {
UnwindInfo info = unwinds.pop();
stack_position(info.stack_depth);
call_frame->set_ip(info.target_ip);
cache_ip(info.target_ip);
goto continue_to_run;
} else {
call_frame->scope->flush_to_heap(state);
return NULL;
}
case cBreak:
// If we're trying to break to here, we're done!
if(th->destination_scope() == call_frame->scope->on_heap()) {
stack_push(th->raise_value());
th->clear_break();
goto continue_to_run;
// Don't return here, because we want to loop back to the top
// and keep running this method.
}
// Otherwise, fall through and run the unwinds
case cReturn:
case cCatchThrow:
case cThreadKill:
// Otherwise, we're doing a long return/break unwind through
// here. We need to run ensure blocks.
while(unwinds.has_unwinds()) {
UnwindInfo info = unwinds.pop();
if(info.for_ensure()) {
stack_position(info.stack_depth);
call_frame->set_ip(info.target_ip);
cache_ip(info.target_ip);
// Don't reset ep here, we're still handling the return/break.
goto continue_to_run;
}
}
// Ok, no ensures to run.
if(th->raise_reason() == cReturn) {
call_frame->scope->flush_to_heap(state);
// If we're trying to return to here, we're done!
if(th->destination_scope() == call_frame->scope->on_heap()) {
Object* val = th->raise_value();
th->clear_return();
return val;
} else {
// Give control of this exception to the caller.
return NULL;
}
} else { // It's cBreak thats not for us!
call_frame->scope->flush_to_heap(state);
// Give control of this exception to the caller.
return NULL;
}
case cExit:
call_frame->scope->flush_to_heap(state);
return NULL;
default:
break;
} // switch
rubinius::bug("Control flow error in interpreter");
return NULL;
}