/*
* Copyright ( c ) 1999 , 2020 , Oracle and / or its affiliates . All rights reserved .
* Copyright ( c ) 2014 , Red Hat Inc . All rights reserved .
* Copyright ( c ) 2020 , 2022 , Huawei Technologies Co . , Ltd . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
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*
*/
#include "precompiled.hpp"
#include "asm/macroAssembler.inline.hpp"
#include "c1/c1_CodeStubs.hpp"
#include "c1/c1_FrameMap.hpp"
#include "c1/c1_LIRAssembler.hpp"
#include "c1/c1_MacroAssembler.hpp"
#include "c1/c1_Runtime1.hpp"
#include "classfile/javaClasses.hpp"
#include "nativeInst_riscv.hpp"
#include "runtime/sharedRuntime.hpp"
#include "vmreg_riscv.inline.hpp"
#define __ ce->masm()->
void C1SafepointPollStub::emit_code(LIR_Assembler* ce) {
__ bind(_entry);
InternalAddress safepoint_pc(__ pc() - __ offset() + safepoint_offset());
__ relocate(safepoint_pc.rspec(), [&] {
int32_t offset;
__ la_patchable(t0, safepoint_pc.target(), offset);
__ addi(t0, t0, offset);
});
__ sd(t0, Address(xthread, JavaThread::saved_exception_pc_offset()));
assert(SharedRuntime::polling_page_return_handler_blob() != NULL,
"polling page return stub not created yet" );
address stub = SharedRuntime::polling_page_return_handler_blob()->entry_point();
__ far_jump(RuntimeAddress(stub));
}
void CounterOverflowStub::emit_code(LIR_Assembler* ce) {
__ bind(_entry);
Metadata *m = _method->as_constant_ptr()->as_metadata();
__ mov_metadata(t0, m);
ce->store_parameter(t0, 1 );
ce->store_parameter(_bci, 0 );
__ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::counter_overflow_id)));
ce->add_call_info_here(_info);
ce->verify_oop_map(_info);
__ j(_continuation);
}
RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index, LIR_Opr array)
: _index(index), _array(array), _throw_index_out_of_bounds_exception(false ) {
assert(info != NULL, "must have info" );
_info = new CodeEmitInfo(info);
}
RangeCheckStub::RangeCheckStub(CodeEmitInfo* info, LIR_Opr index)
: _index(index), _array(), _throw_index_out_of_bounds_exception(true ) {
assert(info != NULL, "must have info" );
_info = new CodeEmitInfo(info);
}
void RangeCheckStub::emit_code(LIR_Assembler* ce) {
__ bind(_entry);
if (_info->deoptimize_on_exception()) {
address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
__ far_call(RuntimeAddress(a));
ce->add_call_info_here(_info);
ce->verify_oop_map(_info);
debug_only(__ should_not_reach_here());
return ;
}
if (_index->is_cpu_register()) {
__ mv(t0, _index->as_register());
} else {
__ mv(t0, _index->as_jint());
}
Runtime1::StubID stub_id;
if (_throw_index_out_of_bounds_exception) {
stub_id = Runtime1::throw_index_exception_id;
} else {
assert(_array != LIR_Opr::nullOpr(), "sanity" );
__ mv(t1, _array->as_pointer_register());
stub_id = Runtime1::throw_range_check_failed_id;
}
RuntimeAddress target(Runtime1::entry_for(stub_id));
__ relocate(target.rspec(), [&] {
int32_t offset;
__ la_patchable(ra, target, offset);
__ jalr(ra, ra, offset);
});
ce->add_call_info_here(_info);
ce->verify_oop_map(_info);
debug_only(__ should_not_reach_here());
}
PredicateFailedStub::PredicateFailedStub(CodeEmitInfo* info) {
_info = new CodeEmitInfo(info);
}
void PredicateFailedStub::emit_code(LIR_Assembler* ce) {
__ bind(_entry);
address a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
__ far_call(RuntimeAddress(a));
ce->add_call_info_here(_info);
ce->verify_oop_map(_info);
debug_only(__ should_not_reach_here());
}
void DivByZeroStub::emit_code(LIR_Assembler* ce) {
if (_offset != -1 ) {
ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
}
__ bind(_entry);
__ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::throw_div0_exception_id)));
ce->add_call_info_here(_info);
ce->verify_oop_map(_info);
#ifdef ASSERT
__ should_not_reach_here();
#endif
}
// Implementation of NewInstanceStub
NewInstanceStub::NewInstanceStub(LIR_Opr klass_reg, LIR_Opr result, ciInstanceKlass* klass, CodeEmitInfo* info, Runtime1::StubID stub_id) {
_result = result;
_klass = klass;
_klass_reg = klass_reg;
_info = new CodeEmitInfo(info);
assert(stub_id == Runtime1::new_instance_id ||
stub_id == Runtime1::fast_new_instance_id ||
stub_id == Runtime1::fast_new_instance_init_check_id,
"need new_instance id" );
_stub_id = stub_id;
}
void NewInstanceStub::emit_code(LIR_Assembler* ce) {
assert(__ rsp_offset() == 0 , "frame size should be fixed" );
__ bind(_entry);
__ mv(x13, _klass_reg->as_register());
__ far_call(RuntimeAddress(Runtime1::entry_for(_stub_id)));
ce->add_call_info_here(_info);
ce->verify_oop_map(_info);
assert(_result->as_register() == x10, "result must in x10" );
__ j(_continuation);
}
// Implementation of NewTypeArrayStub
NewTypeArrayStub::NewTypeArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
_klass_reg = klass_reg;
_length = length;
_result = result;
_info = new CodeEmitInfo(info);
}
void NewTypeArrayStub::emit_code(LIR_Assembler* ce) {
assert(__ rsp_offset() == 0 , "frame size should be fixed" );
__ bind(_entry);
assert(_length->as_register() == x9, "length must in x9" );
assert(_klass_reg->as_register() == x13, "klass_reg must in x13" );
__ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_type_array_id)));
ce->add_call_info_here(_info);
ce->verify_oop_map(_info);
assert(_result->as_register() == x10, "result must in x10" );
__ j(_continuation);
}
// Implementation of NewObjectArrayStub
NewObjectArrayStub::NewObjectArrayStub(LIR_Opr klass_reg, LIR_Opr length, LIR_Opr result, CodeEmitInfo* info) {
_klass_reg = klass_reg;
_result = result;
_length = length;
_info = new CodeEmitInfo(info);
}
void NewObjectArrayStub::emit_code(LIR_Assembler* ce) {
assert(__ rsp_offset() == 0 , "frame size should be fixed" );
__ bind(_entry);
assert(_length->as_register() == x9, "length must in x9" );
assert(_klass_reg->as_register() == x13, "klass_reg must in x13" );
__ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::new_object_array_id)));
ce->add_call_info_here(_info);
ce->verify_oop_map(_info);
assert(_result->as_register() == x10, "result must in x10" );
__ j(_continuation);
}
// Implementation of MonitorAccessStubs
MonitorEnterStub::MonitorEnterStub(LIR_Opr obj_reg, LIR_Opr lock_reg, CodeEmitInfo* info)
: MonitorAccessStub(obj_reg, lock_reg) {
_info = new CodeEmitInfo(info);
}
void MonitorEnterStub::emit_code(LIR_Assembler* ce) {
assert(__ rsp_offset() == 0 , "frame size should be fixed" );
__ bind(_entry);
ce->store_parameter(_obj_reg->as_register(), 1 );
ce->store_parameter(_lock_reg->as_register(), 0 );
Runtime1::StubID enter_id;
if (ce->compilation()->has_fpu_code()) {
enter_id = Runtime1::monitorenter_id;
} else {
enter_id = Runtime1::monitorenter_nofpu_id;
}
__ far_call(RuntimeAddress(Runtime1::entry_for(enter_id)));
ce->add_call_info_here(_info);
ce->verify_oop_map(_info);
__ j(_continuation);
}
void MonitorExitStub::emit_code(LIR_Assembler* ce) {
__ bind(_entry);
if (_compute_lock) {
// lock_reg was destroyed by fast unlocking attempt => recompute it
ce->monitor_address(_monitor_ix, _lock_reg);
}
ce->store_parameter(_lock_reg->as_register(), 0 );
// note: non-blocking leaf routine => no call info needed
Runtime1::StubID exit_id;
if (ce->compilation()->has_fpu_code()) {
exit_id = Runtime1::monitorexit_id;
} else {
exit_id = Runtime1::monitorexit_nofpu_id;
}
__ la(ra, _continuation);
__ far_jump(RuntimeAddress(Runtime1::entry_for(exit_id)));
}
// Implementation of patching:
// - Copy the code at given offset to an inlined buffer (first the bytes, then the number of bytes)
// - Replace original code with a call to the stub
// At Runtime:
// - call to stub, jump to runtime
// - in runtime: preserve all registers (rspecially objects, i.e., source and destination object)
// - in runtime: after initializing class, restore original code, reexecute instruction
int PatchingStub::_patch_info_offset = -NativeGeneralJump::instruction_size;
void PatchingStub::align_patch_site(MacroAssembler* masm) {}
void PatchingStub::emit_code(LIR_Assembler* ce) {
assert(false , "RISCV should not use C1 runtime patching" );
}
void DeoptimizeStub::emit_code(LIR_Assembler* ce) {
__ bind(_entry);
ce->store_parameter(_trap_request, 0 );
__ far_call(RuntimeAddress(Runtime1::entry_for(Runtime1::deoptimize_id)));
ce->add_call_info_here(_info);
DEBUG_ONLY(__ should_not_reach_here());
}
void ImplicitNullCheckStub::emit_code(LIR_Assembler* ce) {
address a = NULL;
if (_info->deoptimize_on_exception()) {
// Deoptimize, do not throw the exception, because it is probably wrong to do it here.
a = Runtime1::entry_for(Runtime1::predicate_failed_trap_id);
} else {
a = Runtime1::entry_for(Runtime1::throw_null_pointer_exception_id);
}
ce->compilation()->implicit_exception_table()->append(_offset, __ offset());
__ bind(_entry);
__ far_call(RuntimeAddress(a));
ce->add_call_info_here(_info);
ce->verify_oop_map(_info);
debug_only(__ should_not_reach_here());
}
void SimpleExceptionStub::emit_code(LIR_Assembler* ce) {
assert(__ rsp_offset() == 0 , "frame size should be fixed" );
__ bind(_entry);
// pass the object in a tmp register because all other registers
// must be preserved
if (_obj->is_cpu_register()) {
__ mv(t0, _obj->as_register());
}
__ far_call(RuntimeAddress(Runtime1::entry_for(_stub)), t1);
ce->add_call_info_here(_info);
debug_only(__ should_not_reach_here());
}
void ArrayCopyStub::emit_code(LIR_Assembler* ce) {
// ---------------slow case: call to native-----------------
__ bind(_entry);
// Figure out where the args should go
// This should really convert the IntrinsicID to the Method* and signature
// but I don't know how to do that.
const int args_num = 5 ;
VMRegPair args[args_num];
BasicType signature[args_num] = { T_OBJECT, T_INT, T_OBJECT, T_INT, T_INT };
SharedRuntime::java_calling_convention(signature, args, args_num);
// push parameters
Register r[args_num];
r[0 ] = src()->as_register();
r[1 ] = src_pos()->as_register();
r[2 ] = dst()->as_register();
r[3 ] = dst_pos()->as_register();
r[4 ] = length()->as_register();
// next registers will get stored on the stack
for (int j = 0 ; j < args_num; j++) {
VMReg r_1 = args[j].first();
if (r_1->is_stack()) {
int st_off = r_1->reg2stack() * wordSize;
__ sd(r[j], Address(sp, st_off));
} else {
assert(r[j] == args[j].first()->as_Register(), "Wrong register for arg" );
}
}
ce->align_call(lir_static_call);
ce->emit_static_call_stub();
if (ce->compilation()->bailed_out()) {
return ; // CodeCache is full
}
Address resolve(SharedRuntime::get_resolve_static_call_stub(),
relocInfo::static_call_type);
address call = __ trampoline_call(resolve);
if (call == NULL) {
ce->bailout("trampoline stub overflow" );
return ;
}
ce->add_call_info_here(info());
#ifndef PRODUCT
if (PrintC1Statistics) {
__ la(t1, ExternalAddress((address)&Runtime1::_arraycopy_slowcase_cnt));
__ incrementw(Address(t1));
}
#endif
__ j(_continuation);
}
#undef __
Messung V0.5 in Prozent C=95 H=94 G=94
¤ Dauer der Verarbeitung: 0.5 Sekunden
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