Mercurial > hg > truffle
diff src/cpu/sparc/vm/c1_Runtime1_sparc.cpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
---|---|
date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 37f87013dfd8 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/cpu/sparc/vm/c1_Runtime1_sparc.cpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,898 @@ +/* + * Copyright 1999-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +#include "incls/_precompiled.incl" +#include "incls/_c1_Runtime1_sparc.cpp.incl" + +// Implementation of StubAssembler + +int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry_point, int number_of_arguments) { + // for sparc changing the number of arguments doesn't change + // anything about the frame size so we'll always lie and claim that + // we are only passing 1 argument. + set_num_rt_args(1); + + assert_not_delayed(); + // bang stack before going to runtime + set(-os::vm_page_size() + STACK_BIAS, G3_scratch); + st(G0, SP, G3_scratch); + + // debugging support + assert(number_of_arguments >= 0 , "cannot have negative number of arguments"); + + set_last_Java_frame(SP, noreg); + if (VerifyThread) mov(G2_thread, O0); // about to be smashed; pass early + save_thread(L7_thread_cache); + // do the call + call(entry_point, relocInfo::runtime_call_type); + if (!VerifyThread) { + delayed()->mov(G2_thread, O0); // pass thread as first argument + } else { + delayed()->nop(); // (thread already passed) + } + int call_offset = offset(); // offset of return address + restore_thread(L7_thread_cache); + reset_last_Java_frame(); + + // check for pending exceptions + { Label L; + Address exception_addr(G2_thread, 0, in_bytes(Thread::pending_exception_offset())); + ld_ptr(exception_addr, Gtemp); + br_null(Gtemp, false, pt, L); + delayed()->nop(); + Address vm_result_addr(G2_thread, 0, in_bytes(JavaThread::vm_result_offset())); + st_ptr(G0, vm_result_addr); + Address vm_result_addr_2(G2_thread, 0, in_bytes(JavaThread::vm_result_2_offset())); + st_ptr(G0, vm_result_addr_2); + + if (frame_size() == no_frame_size) { + // we use O7 linkage so that forward_exception_entry has the issuing PC + call(StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type); + delayed()->restore(); + } else if (_stub_id == Runtime1::forward_exception_id) { + should_not_reach_here(); + } else { + Address exc(G4, Runtime1::entry_for(Runtime1::forward_exception_id)); + jump_to(exc, 0); + delayed()->nop(); + } + bind(L); + } + + // get oop result if there is one and reset the value in the thread + if (oop_result1->is_valid()) { // get oop result if there is one and reset it in the thread + get_vm_result (oop_result1); + } else { + // be a little paranoid and clear the result + Address vm_result_addr(G2_thread, 0, in_bytes(JavaThread::vm_result_offset())); + st_ptr(G0, vm_result_addr); + } + + if (oop_result2->is_valid()) { + get_vm_result_2(oop_result2); + } else { + // be a little paranoid and clear the result + Address vm_result_addr_2(G2_thread, 0, in_bytes(JavaThread::vm_result_2_offset())); + st_ptr(G0, vm_result_addr_2); + } + + return call_offset; +} + + +int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, Register arg1) { + // O0 is reserved for the thread + mov(arg1, O1); + return call_RT(oop_result1, oop_result2, entry, 1); +} + + +int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, Register arg1, Register arg2) { + // O0 is reserved for the thread + mov(arg1, O1); + mov(arg2, O2); assert(arg2 != O1, "smashed argument"); + return call_RT(oop_result1, oop_result2, entry, 2); +} + + +int StubAssembler::call_RT(Register oop_result1, Register oop_result2, address entry, Register arg1, Register arg2, Register arg3) { + // O0 is reserved for the thread + mov(arg1, O1); + mov(arg2, O2); assert(arg2 != O1, "smashed argument"); + mov(arg3, O3); assert(arg3 != O1 && arg3 != O2, "smashed argument"); + return call_RT(oop_result1, oop_result2, entry, 3); +} + + +// Implementation of Runtime1 + +#define __ sasm-> + +static int cpu_reg_save_offsets[FrameMap::nof_cpu_regs]; +static int fpu_reg_save_offsets[FrameMap::nof_fpu_regs]; +static int reg_save_size_in_words; +static int frame_size_in_bytes = -1; + +static OopMap* generate_oop_map(StubAssembler* sasm, bool save_fpu_registers) { + assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words), + " mismatch in calculation"); + sasm->set_frame_size(frame_size_in_bytes / BytesPerWord); + int frame_size_in_slots = frame_size_in_bytes / sizeof(jint); + OopMap* oop_map = new OopMap(frame_size_in_slots, 0); + + int i; + for (i = 0; i < FrameMap::nof_cpu_regs; i++) { + Register r = as_Register(i); + if (r == G1 || r == G3 || r == G4 || r == G5) { + int sp_offset = cpu_reg_save_offsets[i]; + oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset), + r->as_VMReg()); + } + } + + if (save_fpu_registers) { + for (i = 0; i < FrameMap::nof_fpu_regs; i++) { + FloatRegister r = as_FloatRegister(i); + int sp_offset = fpu_reg_save_offsets[i]; + oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset), + r->as_VMReg()); + } + } + return oop_map; +} + +static OopMap* save_live_registers(StubAssembler* sasm, bool save_fpu_registers = true) { + assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words), + " mismatch in calculation"); + __ save_frame_c1(frame_size_in_bytes); + sasm->set_frame_size(frame_size_in_bytes / BytesPerWord); + + // Record volatile registers as callee-save values in an OopMap so their save locations will be + // propagated to the caller frame's RegisterMap during StackFrameStream construction (needed for + // deoptimization; see compiledVFrame::create_stack_value). The caller's I, L and O registers + // are saved in register windows - I's and L's in the caller's frame and O's in the stub frame + // (as the stub's I's) when the runtime routine called by the stub creates its frame. + // OopMap frame sizes are in c2 stack slot sizes (sizeof(jint)) + + int i; + for (i = 0; i < FrameMap::nof_cpu_regs; i++) { + Register r = as_Register(i); + if (r == G1 || r == G3 || r == G4 || r == G5) { + int sp_offset = cpu_reg_save_offsets[i]; + __ st_ptr(r, SP, (sp_offset * BytesPerWord) + STACK_BIAS); + } + } + + if (save_fpu_registers) { + for (i = 0; i < FrameMap::nof_fpu_regs; i++) { + FloatRegister r = as_FloatRegister(i); + int sp_offset = fpu_reg_save_offsets[i]; + __ stf(FloatRegisterImpl::S, r, SP, (sp_offset * BytesPerWord) + STACK_BIAS); + } + } + + return generate_oop_map(sasm, save_fpu_registers); +} + +static void restore_live_registers(StubAssembler* sasm, bool restore_fpu_registers = true) { + for (int i = 0; i < FrameMap::nof_cpu_regs; i++) { + Register r = as_Register(i); + if (r == G1 || r == G3 || r == G4 || r == G5) { + __ ld_ptr(SP, (cpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r); + } + } + + if (restore_fpu_registers) { + for (int i = 0; i < FrameMap::nof_fpu_regs; i++) { + FloatRegister r = as_FloatRegister(i); + __ ldf(FloatRegisterImpl::S, SP, (fpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r); + } + } +} + + +void Runtime1::initialize_pd() { + // compute word offsets from SP at which live (non-windowed) registers are captured by stub routines + // + // A stub routine will have a frame that is at least large enough to hold + // a register window save area (obviously) and the volatile g registers + // and floating registers. A user of save_live_registers can have a frame + // that has more scratch area in it (although typically they will use L-regs). + // in that case the frame will look like this (stack growing down) + // + // FP -> | | + // | scratch mem | + // | " " | + // -------------- + // | float regs | + // | " " | + // --------------- + // | G regs | + // | " " | + // --------------- + // | abi reg. | + // | window save | + // | area | + // SP -> --------------- + // + int i; + int sp_offset = round_to(frame::register_save_words, 2); // start doubleword aligned + + // only G int registers are saved explicitly; others are found in register windows + for (i = 0; i < FrameMap::nof_cpu_regs; i++) { + Register r = as_Register(i); + if (r == G1 || r == G3 || r == G4 || r == G5) { + cpu_reg_save_offsets[i] = sp_offset; + sp_offset++; + } + } + + // all float registers are saved explicitly + assert(FrameMap::nof_fpu_regs == 32, "double registers not handled here"); + for (i = 0; i < FrameMap::nof_fpu_regs; i++) { + fpu_reg_save_offsets[i] = sp_offset; + sp_offset++; + } + reg_save_size_in_words = sp_offset - frame::memory_parameter_word_sp_offset; + // this should match assembler::total_frame_size_in_bytes, which + // isn't callable from this context. It's checked by an assert when + // it's used though. + frame_size_in_bytes = align_size_up(sp_offset * wordSize, 8); +} + + +OopMapSet* Runtime1::generate_exception_throw(StubAssembler* sasm, address target, bool has_argument) { + // make a frame and preserve the caller's caller-save registers + OopMap* oop_map = save_live_registers(sasm); + int call_offset; + if (!has_argument) { + call_offset = __ call_RT(noreg, noreg, target); + } else { + call_offset = __ call_RT(noreg, noreg, target, G4); + } + OopMapSet* oop_maps = new OopMapSet(); + oop_maps->add_gc_map(call_offset, oop_map); + + __ should_not_reach_here(); + return oop_maps; +} + + +OopMapSet* Runtime1::generate_stub_call(StubAssembler* sasm, Register result, address target, + Register arg1, Register arg2, Register arg3) { + // make a frame and preserve the caller's caller-save registers + OopMap* oop_map = save_live_registers(sasm); + + int call_offset; + if (arg1 == noreg) { + call_offset = __ call_RT(result, noreg, target); + } else if (arg2 == noreg) { + call_offset = __ call_RT(result, noreg, target, arg1); + } else if (arg3 == noreg) { + call_offset = __ call_RT(result, noreg, target, arg1, arg2); + } else { + call_offset = __ call_RT(result, noreg, target, arg1, arg2, arg3); + } + OopMapSet* oop_maps = NULL; + + oop_maps = new OopMapSet(); + oop_maps->add_gc_map(call_offset, oop_map); + restore_live_registers(sasm); + + __ ret(); + __ delayed()->restore(); + + return oop_maps; +} + + +OopMapSet* Runtime1::generate_patching(StubAssembler* sasm, address target) { + // make a frame and preserve the caller's caller-save registers + OopMap* oop_map = save_live_registers(sasm); + + // call the runtime patching routine, returns non-zero if nmethod got deopted. + int call_offset = __ call_RT(noreg, noreg, target); + OopMapSet* oop_maps = new OopMapSet(); + oop_maps->add_gc_map(call_offset, oop_map); + + // re-execute the patched instruction or, if the nmethod was deoptmized, return to the + // deoptimization handler entry that will cause re-execution of the current bytecode + DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob(); + assert(deopt_blob != NULL, "deoptimization blob must have been created"); + + Label no_deopt; + __ tst(O0); + __ brx(Assembler::equal, false, Assembler::pt, no_deopt); + __ delayed()->nop(); + + // return to the deoptimization handler entry for unpacking and rexecute + // if we simply returned the we'd deopt as if any call we patched had just + // returned. + + restore_live_registers(sasm); + __ restore(); + __ br(Assembler::always, false, Assembler::pt, deopt_blob->unpack_with_reexecution(), relocInfo::runtime_call_type); + __ delayed()->nop(); + + __ bind(no_deopt); + restore_live_registers(sasm); + __ ret(); + __ delayed()->restore(); + + return oop_maps; +} + +OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) { + + OopMapSet* oop_maps = NULL; + // for better readability + const bool must_gc_arguments = true; + const bool dont_gc_arguments = false; + + // stub code & info for the different stubs + switch (id) { + case forward_exception_id: + { + // we're handling an exception in the context of a compiled + // frame. The registers have been saved in the standard + // places. Perform an exception lookup in the caller and + // dispatch to the handler if found. Otherwise unwind and + // dispatch to the callers exception handler. + + oop_maps = new OopMapSet(); + OopMap* oop_map = generate_oop_map(sasm, true); + + // transfer the pending exception to the exception_oop + __ ld_ptr(G2_thread, in_bytes(JavaThread::pending_exception_offset()), Oexception); + __ ld_ptr(Oexception, 0, G0); + __ st_ptr(G0, G2_thread, in_bytes(JavaThread::pending_exception_offset())); + __ add(I7, frame::pc_return_offset, Oissuing_pc); + + generate_handle_exception(sasm, oop_maps, oop_map); + __ should_not_reach_here(); + } + break; + + case new_instance_id: + case fast_new_instance_id: + case fast_new_instance_init_check_id: + { + Register G5_klass = G5; // Incoming + Register O0_obj = O0; // Outgoing + + if (id == new_instance_id) { + __ set_info("new_instance", dont_gc_arguments); + } else if (id == fast_new_instance_id) { + __ set_info("fast new_instance", dont_gc_arguments); + } else { + assert(id == fast_new_instance_init_check_id, "bad StubID"); + __ set_info("fast new_instance init check", dont_gc_arguments); + } + + if ((id == fast_new_instance_id || id == fast_new_instance_init_check_id) && + UseTLAB && FastTLABRefill) { + Label slow_path; + Register G1_obj_size = G1; + Register G3_t1 = G3; + Register G4_t2 = G4; + assert_different_registers(G5_klass, G1_obj_size, G3_t1, G4_t2); + + // Push a frame since we may do dtrace notification for the + // allocation which requires calling out and we don't want + // to stomp the real return address. + __ save_frame(0); + + if (id == fast_new_instance_init_check_id) { + // make sure the klass is initialized + __ ld(G5_klass, instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc), G3_t1); + __ cmp(G3_t1, instanceKlass::fully_initialized); + __ br(Assembler::notEqual, false, Assembler::pn, slow_path); + __ delayed()->nop(); + } +#ifdef ASSERT + // assert object can be fast path allocated + { + Label ok, not_ok; + __ ld(G5_klass, Klass::layout_helper_offset_in_bytes() + sizeof(oopDesc), G1_obj_size); + __ cmp(G1_obj_size, 0); // make sure it's an instance (LH > 0) + __ br(Assembler::lessEqual, false, Assembler::pn, not_ok); + __ delayed()->nop(); + __ btst(Klass::_lh_instance_slow_path_bit, G1_obj_size); + __ br(Assembler::zero, false, Assembler::pn, ok); + __ delayed()->nop(); + __ bind(not_ok); + __ stop("assert(can be fast path allocated)"); + __ should_not_reach_here(); + __ bind(ok); + } +#endif // ASSERT + // if we got here then the TLAB allocation failed, so try + // refilling the TLAB or allocating directly from eden. + Label retry_tlab, try_eden; + __ tlab_refill(retry_tlab, try_eden, slow_path); // preserves G5_klass + + __ bind(retry_tlab); + + // get the instance size + __ ld(G5_klass, klassOopDesc::header_size() * HeapWordSize + Klass::layout_helper_offset_in_bytes(), G1_obj_size); + __ tlab_allocate(O0_obj, G1_obj_size, 0, G3_t1, slow_path); + __ initialize_object(O0_obj, G5_klass, G1_obj_size, 0, G3_t1, G4_t2); + __ verify_oop(O0_obj); + __ mov(O0, I0); + __ ret(); + __ delayed()->restore(); + + __ bind(try_eden); + // get the instance size + __ ld(G5_klass, klassOopDesc::header_size() * HeapWordSize + Klass::layout_helper_offset_in_bytes(), G1_obj_size); + __ eden_allocate(O0_obj, G1_obj_size, 0, G3_t1, G4_t2, slow_path); + __ initialize_object(O0_obj, G5_klass, G1_obj_size, 0, G3_t1, G4_t2); + __ verify_oop(O0_obj); + __ mov(O0, I0); + __ ret(); + __ delayed()->restore(); + + __ bind(slow_path); + + // pop this frame so generate_stub_call can push it's own + __ restore(); + } + + oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_instance), G5_klass); + // I0->O0: new instance + } + + break; + +#ifdef TIERED + case counter_overflow_id: + // G4 contains bci + oop_maps = generate_stub_call(sasm, noreg, CAST_FROM_FN_PTR(address, counter_overflow), G4); + break; +#endif // TIERED + + case new_type_array_id: + case new_object_array_id: + { + Register G5_klass = G5; // Incoming + Register G4_length = G4; // Incoming + Register O0_obj = O0; // Outgoing + + Address klass_lh(G5_klass, 0, ((klassOopDesc::header_size() * HeapWordSize) + + Klass::layout_helper_offset_in_bytes())); + assert(Klass::_lh_header_size_shift % BitsPerByte == 0, "bytewise"); + assert(Klass::_lh_header_size_mask == 0xFF, "bytewise"); + // Use this offset to pick out an individual byte of the layout_helper: + const int klass_lh_header_size_offset = ((BytesPerInt - 1) // 3 - 2 selects byte {0,1,0,0} + - Klass::_lh_header_size_shift / BitsPerByte); + + if (id == new_type_array_id) { + __ set_info("new_type_array", dont_gc_arguments); + } else { + __ set_info("new_object_array", dont_gc_arguments); + } + +#ifdef ASSERT + // assert object type is really an array of the proper kind + { + Label ok; + Register G3_t1 = G3; + __ ld(klass_lh, G3_t1); + __ sra(G3_t1, Klass::_lh_array_tag_shift, G3_t1); + int tag = ((id == new_type_array_id) + ? Klass::_lh_array_tag_type_value + : Klass::_lh_array_tag_obj_value); + __ cmp(G3_t1, tag); + __ brx(Assembler::equal, false, Assembler::pt, ok); + __ delayed()->nop(); + __ stop("assert(is an array klass)"); + __ should_not_reach_here(); + __ bind(ok); + } +#endif // ASSERT + + if (UseTLAB && FastTLABRefill) { + Label slow_path; + Register G1_arr_size = G1; + Register G3_t1 = G3; + Register O1_t2 = O1; + assert_different_registers(G5_klass, G4_length, G1_arr_size, G3_t1, O1_t2); + + // check that array length is small enough for fast path + __ set(C1_MacroAssembler::max_array_allocation_length, G3_t1); + __ cmp(G4_length, G3_t1); + __ br(Assembler::greaterUnsigned, false, Assembler::pn, slow_path); + __ delayed()->nop(); + + // if we got here then the TLAB allocation failed, so try + // refilling the TLAB or allocating directly from eden. + Label retry_tlab, try_eden; + __ tlab_refill(retry_tlab, try_eden, slow_path); // preserves G4_length and G5_klass + + __ bind(retry_tlab); + + // get the allocation size: (length << (layout_helper & 0x1F)) + header_size + __ ld(klass_lh, G3_t1); + __ sll(G4_length, G3_t1, G1_arr_size); + __ srl(G3_t1, Klass::_lh_header_size_shift, G3_t1); + __ and3(G3_t1, Klass::_lh_header_size_mask, G3_t1); + __ add(G1_arr_size, G3_t1, G1_arr_size); + __ add(G1_arr_size, MinObjAlignmentInBytesMask, G1_arr_size); // align up + __ and3(G1_arr_size, ~MinObjAlignmentInBytesMask, G1_arr_size); + + __ tlab_allocate(O0_obj, G1_arr_size, 0, G3_t1, slow_path); // preserves G1_arr_size + + __ initialize_header(O0_obj, G5_klass, G4_length, G3_t1, O1_t2); + __ ldub(klass_lh, G3_t1, klass_lh_header_size_offset); + __ sub(G1_arr_size, G3_t1, O1_t2); // body length + __ add(O0_obj, G3_t1, G3_t1); // body start + __ initialize_body(G3_t1, O1_t2); + __ verify_oop(O0_obj); + __ retl(); + __ delayed()->nop(); + + __ bind(try_eden); + // get the allocation size: (length << (layout_helper & 0x1F)) + header_size + __ ld(klass_lh, G3_t1); + __ sll(G4_length, G3_t1, G1_arr_size); + __ srl(G3_t1, Klass::_lh_header_size_shift, G3_t1); + __ and3(G3_t1, Klass::_lh_header_size_mask, G3_t1); + __ add(G1_arr_size, G3_t1, G1_arr_size); + __ add(G1_arr_size, MinObjAlignmentInBytesMask, G1_arr_size); + __ and3(G1_arr_size, ~MinObjAlignmentInBytesMask, G1_arr_size); + + __ eden_allocate(O0_obj, G1_arr_size, 0, G3_t1, O1_t2, slow_path); // preserves G1_arr_size + + __ initialize_header(O0_obj, G5_klass, G4_length, G3_t1, O1_t2); + __ ldub(klass_lh, G3_t1, klass_lh_header_size_offset); + __ sub(G1_arr_size, G3_t1, O1_t2); // body length + __ add(O0_obj, G3_t1, G3_t1); // body start + __ initialize_body(G3_t1, O1_t2); + __ verify_oop(O0_obj); + __ retl(); + __ delayed()->nop(); + + __ bind(slow_path); + } + + if (id == new_type_array_id) { + oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_type_array), G5_klass, G4_length); + } else { + oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_object_array), G5_klass, G4_length); + } + // I0 -> O0: new array + } + break; + + case new_multi_array_id: + { // O0: klass + // O1: rank + // O2: address of 1st dimension + __ set_info("new_multi_array", dont_gc_arguments); + oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_multi_array), I0, I1, I2); + // I0 -> O0: new multi array + } + break; + + case register_finalizer_id: + { + __ set_info("register_finalizer", dont_gc_arguments); + + // load the klass and check the has finalizer flag + Label register_finalizer; + Register t = O1; + __ ld_ptr(O0, oopDesc::klass_offset_in_bytes(), t); + __ ld(t, Klass::access_flags_offset_in_bytes() + sizeof(oopDesc), t); + __ set(JVM_ACC_HAS_FINALIZER, G3); + __ andcc(G3, t, G0); + __ br(Assembler::notZero, false, Assembler::pt, register_finalizer); + __ delayed()->nop(); + + // do a leaf return + __ retl(); + __ delayed()->nop(); + + __ bind(register_finalizer); + OopMap* oop_map = save_live_registers(sasm); + int call_offset = __ call_RT(noreg, noreg, + CAST_FROM_FN_PTR(address, SharedRuntime::register_finalizer), I0); + oop_maps = new OopMapSet(); + oop_maps->add_gc_map(call_offset, oop_map); + + // Now restore all the live registers + restore_live_registers(sasm); + + __ ret(); + __ delayed()->restore(); + } + break; + + case throw_range_check_failed_id: + { __ set_info("range_check_failed", dont_gc_arguments); // arguments will be discarded + // G4: index + oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_range_check_exception), true); + } + break; + + case throw_index_exception_id: + { __ set_info("index_range_check_failed", dont_gc_arguments); // arguments will be discarded + // G4: index + oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_index_exception), true); + } + break; + + case throw_div0_exception_id: + { __ set_info("throw_div0_exception", dont_gc_arguments); + oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_div0_exception), false); + } + break; + + case throw_null_pointer_exception_id: + { __ set_info("throw_null_pointer_exception", dont_gc_arguments); + oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_null_pointer_exception), false); + } + break; + + case handle_exception_id: + { + __ set_info("handle_exception", dont_gc_arguments); + // make a frame and preserve the caller's caller-save registers + + oop_maps = new OopMapSet(); + OopMap* oop_map = save_live_registers(sasm); + __ mov(Oexception->after_save(), Oexception); + __ mov(Oissuing_pc->after_save(), Oissuing_pc); + generate_handle_exception(sasm, oop_maps, oop_map); + } + break; + + case unwind_exception_id: + { + // O0: exception + // I7: address of call to this method + + __ set_info("unwind_exception", dont_gc_arguments); + __ mov(Oexception, Oexception->after_save()); + __ add(I7, frame::pc_return_offset, Oissuing_pc->after_save()); + + __ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), + Oissuing_pc->after_save()); + __ verify_not_null_oop(Oexception->after_save()); + __ jmp(O0, 0); + __ delayed()->restore(); + } + break; + + case throw_array_store_exception_id: + { + __ set_info("throw_array_store_exception", dont_gc_arguments); + oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_array_store_exception), false); + } + break; + + case throw_class_cast_exception_id: + { + // G4: object + __ set_info("throw_class_cast_exception", dont_gc_arguments); + oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_class_cast_exception), true); + } + break; + + case throw_incompatible_class_change_error_id: + { + __ set_info("throw_incompatible_class_cast_exception", dont_gc_arguments); + oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_incompatible_class_change_error), false); + } + break; + + case slow_subtype_check_id: + { // Support for uint StubRoutine::partial_subtype_check( Klass sub, Klass super ); + // Arguments : + // + // ret : G3 + // sub : G3, argument, destroyed + // super: G1, argument, not changed + // raddr: O7, blown by call + Label loop, miss; + + __ save_frame(0); // Blow no registers! + + __ ld_ptr( G3, sizeof(oopDesc) + Klass::secondary_supers_offset_in_bytes(), L3 ); + __ lduw(L3,arrayOopDesc::length_offset_in_bytes(),L0); // length in l0 + __ add(L3,arrayOopDesc::base_offset_in_bytes(T_OBJECT),L1); // ptr into array + __ clr(L4); // Index + // Load a little early; will load 1 off the end of the array. + // Ok for now; revisit if we have other uses of this routine. + __ ld_ptr(L1,0,L2); // Will load a little early + + // The scan loop + __ bind(loop); + __ add(L1,wordSize,L1); // Bump by OOP size + __ cmp(L4,L0); + __ br(Assembler::equal,false,Assembler::pn,miss); + __ delayed()->inc(L4); // Bump index + __ subcc(L2,G1,L3); // Check for match; zero in L3 for a hit + __ brx( Assembler::notEqual, false, Assembler::pt, loop ); + __ delayed()->ld_ptr(L1,0,L2); // Will load a little early + + // Got a hit; report success; set cache + __ st_ptr( G1, G3, sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes() ); + + __ mov(1, G3); + __ ret(); // Result in G5 is ok; flags set + __ delayed()->restore(); // free copy or add can go here + + __ bind(miss); + __ mov(0, G3); + __ ret(); // Result in G5 is ok; flags set + __ delayed()->restore(); // free copy or add can go here + } + + case monitorenter_nofpu_id: + case monitorenter_id: + { // G4: object + // G5: lock address + __ set_info("monitorenter", dont_gc_arguments); + + int save_fpu_registers = (id == monitorenter_id); + // make a frame and preserve the caller's caller-save registers + OopMap* oop_map = save_live_registers(sasm, save_fpu_registers); + + int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorenter), G4, G5); + + oop_maps = new OopMapSet(); + oop_maps->add_gc_map(call_offset, oop_map); + restore_live_registers(sasm, save_fpu_registers); + + __ ret(); + __ delayed()->restore(); + } + break; + + case monitorexit_nofpu_id: + case monitorexit_id: + { // G4: lock address + // note: really a leaf routine but must setup last java sp + // => use call_RT for now (speed can be improved by + // doing last java sp setup manually) + __ set_info("monitorexit", dont_gc_arguments); + + int save_fpu_registers = (id == monitorexit_id); + // make a frame and preserve the caller's caller-save registers + OopMap* oop_map = save_live_registers(sasm, save_fpu_registers); + + int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorexit), G4); + + oop_maps = new OopMapSet(); + oop_maps->add_gc_map(call_offset, oop_map); + restore_live_registers(sasm, save_fpu_registers); + + __ ret(); + __ delayed()->restore(); + + } + break; + + case access_field_patching_id: + { __ set_info("access_field_patching", dont_gc_arguments); + oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, access_field_patching)); + } + break; + + case load_klass_patching_id: + { __ set_info("load_klass_patching", dont_gc_arguments); + oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_klass_patching)); + } + break; + + case jvmti_exception_throw_id: + { // Oexception : exception + __ set_info("jvmti_exception_throw", dont_gc_arguments); + oop_maps = generate_stub_call(sasm, noreg, CAST_FROM_FN_PTR(address, Runtime1::post_jvmti_exception_throw), I0); + } + break; + + case dtrace_object_alloc_id: + { // O0: object + __ set_info("dtrace_object_alloc", dont_gc_arguments); + // we can't gc here so skip the oopmap but make sure that all + // the live registers get saved. + save_live_registers(sasm); + + __ save_thread(L7_thread_cache); + __ call(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), + relocInfo::runtime_call_type); + __ delayed()->mov(I0, O0); + __ restore_thread(L7_thread_cache); + + restore_live_registers(sasm); + __ ret(); + __ delayed()->restore(); + } + break; + + default: + { __ set_info("unimplemented entry", dont_gc_arguments); + __ save_frame(0); + __ set((int)id, O1); + __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), O1); + __ should_not_reach_here(); + } + break; + } + return oop_maps; +} + + +void Runtime1::generate_handle_exception(StubAssembler* sasm, OopMapSet* oop_maps, OopMap* oop_map, bool) { + Label no_deopt; + Label no_handler; + + __ verify_not_null_oop(Oexception); + + // save the exception and issuing pc in the thread + __ st_ptr(Oexception, G2_thread, in_bytes(JavaThread::exception_oop_offset())); + __ st_ptr(Oissuing_pc, G2_thread, in_bytes(JavaThread::exception_pc_offset())); + + // save the real return address and use the throwing pc as the return address to lookup (has bci & oop map) + __ mov(I7, L0); + __ mov(Oissuing_pc, I7); + __ sub(I7, frame::pc_return_offset, I7); + int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, exception_handler_for_pc)); + + // Note: if nmethod has been deoptimized then regardless of + // whether it had a handler or not we will deoptimize + // by entering the deopt blob with a pending exception. + + __ tst(O0); + __ br(Assembler::zero, false, Assembler::pn, no_handler); + __ delayed()->nop(); + + // restore the registers that were saved at the beginning and jump to the exception handler. + restore_live_registers(sasm); + + __ jmp(O0, 0); + __ delayed()->restore(); + + __ bind(no_handler); + __ mov(L0, I7); // restore return address + + // restore exception oop + __ ld_ptr(G2_thread, in_bytes(JavaThread::exception_oop_offset()), Oexception->after_save()); + __ st_ptr(G0, G2_thread, in_bytes(JavaThread::exception_oop_offset())); + + __ restore(); + + Address exc(G4, Runtime1::entry_for(Runtime1::unwind_exception_id)); + __ jump_to(exc, 0); + __ delayed()->nop(); + + + oop_maps->add_gc_map(call_offset, oop_map); +} + + +#undef __ + +#define __ masm->