/* * Copyright (c) 2000, 2010, Oracle and/or its affiliates. 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 * questions. * */ #include "precompiled.hpp" #include "c1/c1_Compilation.hpp" #include "c1/c1_LIRAssembler.hpp" #include "c1/c1_MacroAssembler.hpp" #include "c1/c1_Runtime1.hpp" #include "c1/c1_ValueStack.hpp" #include "ci/ciArrayKlass.hpp" #include "ci/ciInstance.hpp" #include "gc_interface/collectedHeap.hpp" #include "memory/barrierSet.hpp" #include "memory/cardTableModRefBS.hpp" #include "nativeInst_x86.hpp" #include "oops/objArrayKlass.hpp" #include "runtime/sharedRuntime.hpp" // These masks are used to provide 128-bit aligned bitmasks to the XMM // instructions, to allow sign-masking or sign-bit flipping. They allow // fast versions of NegF/NegD and AbsF/AbsD. // Note: 'double' and 'long long' have 32-bits alignment on x86. static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) { // Use the expression (adr)&(~0xF) to provide 128-bits aligned address // of 128-bits operands for SSE instructions. jlong *operand = (jlong*)(((long)adr)&((long)(~0xF))); // Store the value to a 128-bits operand. operand[0] = lo; operand[1] = hi; return operand; } // Buffer for 128-bits masks used by SSE instructions. static jlong fp_signmask_pool[(4+1)*2]; // 4*128bits(data) + 128bits(alignment) // Static initialization during VM startup. static jlong *float_signmask_pool = double_quadword(&fp_signmask_pool[1*2], CONST64(0x7FFFFFFF7FFFFFFF), CONST64(0x7FFFFFFF7FFFFFFF)); static jlong *double_signmask_pool = double_quadword(&fp_signmask_pool[2*2], CONST64(0x7FFFFFFFFFFFFFFF), CONST64(0x7FFFFFFFFFFFFFFF)); static jlong *float_signflip_pool = double_quadword(&fp_signmask_pool[3*2], CONST64(0x8000000080000000), CONST64(0x8000000080000000)); static jlong *double_signflip_pool = double_quadword(&fp_signmask_pool[4*2], CONST64(0x8000000000000000), CONST64(0x8000000000000000)); NEEDS_CLEANUP // remove this definitions ? const Register IC_Klass = rax; // where the IC klass is cached const Register SYNC_header = rax; // synchronization header const Register SHIFT_count = rcx; // where count for shift operations must be #define __ _masm-> static void select_different_registers(Register preserve, Register extra, Register &tmp1, Register &tmp2) { if (tmp1 == preserve) { assert_different_registers(tmp1, tmp2, extra); tmp1 = extra; } else if (tmp2 == preserve) { assert_different_registers(tmp1, tmp2, extra); tmp2 = extra; } assert_different_registers(preserve, tmp1, tmp2); } static void select_different_registers(Register preserve, Register extra, Register &tmp1, Register &tmp2, Register &tmp3) { if (tmp1 == preserve) { assert_different_registers(tmp1, tmp2, tmp3, extra); tmp1 = extra; } else if (tmp2 == preserve) { assert_different_registers(tmp1, tmp2, tmp3, extra); tmp2 = extra; } else if (tmp3 == preserve) { assert_different_registers(tmp1, tmp2, tmp3, extra); tmp3 = extra; } assert_different_registers(preserve, tmp1, tmp2, tmp3); } bool LIR_Assembler::is_small_constant(LIR_Opr opr) { if (opr->is_constant()) { LIR_Const* constant = opr->as_constant_ptr(); switch (constant->type()) { case T_INT: { return true; } default: return false; } } return false; } LIR_Opr LIR_Assembler::receiverOpr() { return FrameMap::receiver_opr; } LIR_Opr LIR_Assembler::incomingReceiverOpr() { return receiverOpr(); } LIR_Opr LIR_Assembler::osrBufferPointer() { return FrameMap::as_pointer_opr(receiverOpr()->as_register()); } //--------------fpu register translations----------------------- address LIR_Assembler::float_constant(float f) { address const_addr = __ float_constant(f); if (const_addr == NULL) { bailout("const section overflow"); return __ code()->consts()->start(); } else { return const_addr; } } address LIR_Assembler::double_constant(double d) { address const_addr = __ double_constant(d); if (const_addr == NULL) { bailout("const section overflow"); return __ code()->consts()->start(); } else { return const_addr; } } void LIR_Assembler::set_24bit_FPU() { __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_24())); } void LIR_Assembler::reset_FPU() { __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); } void LIR_Assembler::fpop() { __ fpop(); } void LIR_Assembler::fxch(int i) { __ fxch(i); } void LIR_Assembler::fld(int i) { __ fld_s(i); } void LIR_Assembler::ffree(int i) { __ ffree(i); } void LIR_Assembler::breakpoint() { __ int3(); } void LIR_Assembler::push(LIR_Opr opr) { if (opr->is_single_cpu()) { __ push_reg(opr->as_register()); } else if (opr->is_double_cpu()) { NOT_LP64(__ push_reg(opr->as_register_hi())); __ push_reg(opr->as_register_lo()); } else if (opr->is_stack()) { __ push_addr(frame_map()->address_for_slot(opr->single_stack_ix())); } else if (opr->is_constant()) { LIR_Const* const_opr = opr->as_constant_ptr(); if (const_opr->type() == T_OBJECT) { __ push_oop(const_opr->as_jobject()); } else if (const_opr->type() == T_INT) { __ push_jint(const_opr->as_jint()); } else { ShouldNotReachHere(); } } else { ShouldNotReachHere(); } } void LIR_Assembler::pop(LIR_Opr opr) { if (opr->is_single_cpu()) { __ pop_reg(opr->as_register()); } else { ShouldNotReachHere(); } } bool LIR_Assembler::is_literal_address(LIR_Address* addr) { return addr->base()->is_illegal() && addr->index()->is_illegal(); } //------------------------------------------- Address LIR_Assembler::as_Address(LIR_Address* addr) { return as_Address(addr, rscratch1); } Address LIR_Assembler::as_Address(LIR_Address* addr, Register tmp) { if (addr->base()->is_illegal()) { assert(addr->index()->is_illegal(), "must be illegal too"); AddressLiteral laddr((address)addr->disp(), relocInfo::none); if (! __ reachable(laddr)) { __ movptr(tmp, laddr.addr()); Address res(tmp, 0); return res; } else { return __ as_Address(laddr); } } Register base = addr->base()->as_pointer_register(); if (addr->index()->is_illegal()) { return Address( base, addr->disp()); } else if (addr->index()->is_cpu_register()) { Register index = addr->index()->as_pointer_register(); return Address(base, index, (Address::ScaleFactor) addr->scale(), addr->disp()); } else if (addr->index()->is_constant()) { intptr_t addr_offset = (addr->index()->as_constant_ptr()->as_jint() << addr->scale()) + addr->disp(); assert(Assembler::is_simm32(addr_offset), "must be"); return Address(base, addr_offset); } else { Unimplemented(); return Address(); } } Address LIR_Assembler::as_Address_hi(LIR_Address* addr) { Address base = as_Address(addr); return Address(base._base, base._index, base._scale, base._disp + BytesPerWord); } Address LIR_Assembler::as_Address_lo(LIR_Address* addr) { return as_Address(addr); } void LIR_Assembler::osr_entry() { offsets()->set_value(CodeOffsets::OSR_Entry, code_offset()); BlockBegin* osr_entry = compilation()->hir()->osr_entry(); ValueStack* entry_state = osr_entry->state(); int number_of_locks = entry_state->locks_size(); // we jump here if osr happens with the interpreter // state set up to continue at the beginning of the // loop that triggered osr - in particular, we have // the following registers setup: // // rcx: osr buffer // // build frame ciMethod* m = compilation()->method(); __ build_frame(initial_frame_size_in_bytes()); // OSR buffer is // // locals[nlocals-1..0] // monitors[0..number_of_locks] // // locals is a direct copy of the interpreter frame so in the osr buffer // so first slot in the local array is the last local from the interpreter // and last slot is local[0] (receiver) from the interpreter // // Similarly with locks. The first lock slot in the osr buffer is the nth lock // from the interpreter frame, the nth lock slot in the osr buffer is 0th lock // in the interpreter frame (the method lock if a sync method) // Initialize monitors in the compiled activation. // rcx: pointer to osr buffer // // All other registers are dead at this point and the locals will be // copied into place by code emitted in the IR. Register OSR_buf = osrBufferPointer()->as_pointer_register(); { assert(frame::interpreter_frame_monitor_size() == BasicObjectLock::size(), "adjust code below"); int monitor_offset = BytesPerWord * method()->max_locals() + (2 * BytesPerWord) * (number_of_locks - 1); // SharedRuntime::OSR_migration_begin() packs BasicObjectLocks in // the OSR buffer using 2 word entries: first the lock and then // the oop. for (int i = 0; i < number_of_locks; i++) { int slot_offset = monitor_offset - ((i * 2) * BytesPerWord); #ifdef ASSERT // verify the interpreter's monitor has a non-null object { Label L; __ cmpptr(Address(OSR_buf, slot_offset + 1*BytesPerWord), (int32_t)NULL_WORD); __ jcc(Assembler::notZero, L); __ stop("locked object is NULL"); __ bind(L); } #endif __ movptr(rbx, Address(OSR_buf, slot_offset + 0)); __ movptr(frame_map()->address_for_monitor_lock(i), rbx); __ movptr(rbx, Address(OSR_buf, slot_offset + 1*BytesPerWord)); __ movptr(frame_map()->address_for_monitor_object(i), rbx); } } } // inline cache check; done before the frame is built. int LIR_Assembler::check_icache() { Register receiver = FrameMap::receiver_opr->as_register(); Register ic_klass = IC_Klass; const int ic_cmp_size = LP64_ONLY(10) NOT_LP64(9); const bool do_post_padding = VerifyOops || UseCompressedOops; if (!do_post_padding) { // insert some nops so that the verified entry point is aligned on CodeEntryAlignment while ((__ offset() + ic_cmp_size) % CodeEntryAlignment != 0) { __ nop(); } } int offset = __ offset(); __ inline_cache_check(receiver, IC_Klass); assert(__ offset() % CodeEntryAlignment == 0 || do_post_padding, "alignment must be correct"); if (do_post_padding) { // force alignment after the cache check. // It's been verified to be aligned if !VerifyOops __ align(CodeEntryAlignment); } return offset; } void LIR_Assembler::jobject2reg_with_patching(Register reg, CodeEmitInfo* info) { jobject o = NULL; PatchingStub* patch = new PatchingStub(_masm, PatchingStub::load_klass_id); __ movoop(reg, o); patching_epilog(patch, lir_patch_normal, reg, info); } void LIR_Assembler::monitorexit(LIR_Opr obj_opr, LIR_Opr lock_opr, Register new_hdr, int monitor_no, Register exception) { if (exception->is_valid()) { // preserve exception // note: the monitor_exit runtime call is a leaf routine // and cannot block => no GC can happen // The slow case (MonitorAccessStub) uses the first two stack slots // ([esp+0] and [esp+4]), therefore we store the exception at [esp+8] __ movptr (Address(rsp, 2*wordSize), exception); } Register obj_reg = obj_opr->as_register(); Register lock_reg = lock_opr->as_register(); // setup registers (lock_reg must be rax, for lock_object) assert(obj_reg != SYNC_header && lock_reg != SYNC_header, "rax, must be available here"); Register hdr = lock_reg; assert(new_hdr == SYNC_header, "wrong register"); lock_reg = new_hdr; // compute pointer to BasicLock Address lock_addr = frame_map()->address_for_monitor_lock(monitor_no); __ lea(lock_reg, lock_addr); // unlock object MonitorAccessStub* slow_case = new MonitorExitStub(lock_opr, true, monitor_no); // _slow_case_stubs->append(slow_case); // temporary fix: must be created after exceptionhandler, therefore as call stub _slow_case_stubs->append(slow_case); if (UseFastLocking) { // try inlined fast unlocking first, revert to slow locking if it fails // note: lock_reg points to the displaced header since the displaced header offset is 0! assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); __ unlock_object(hdr, obj_reg, lock_reg, *slow_case->entry()); } else { // always do slow unlocking // note: the slow unlocking code could be inlined here, however if we use // slow unlocking, speed doesn't matter anyway and this solution is // simpler and requires less duplicated code - additionally, the // slow unlocking code is the same in either case which simplifies // debugging __ jmp(*slow_case->entry()); } // done __ bind(*slow_case->continuation()); if (exception->is_valid()) { // restore exception __ movptr (exception, Address(rsp, 2 * wordSize)); } } // This specifies the rsp decrement needed to build the frame int LIR_Assembler::initial_frame_size_in_bytes() { // if rounding, must let FrameMap know! // The frame_map records size in slots (32bit word) // subtract two words to account for return address and link return (frame_map()->framesize() - (2*VMRegImpl::slots_per_word)) * VMRegImpl::stack_slot_size; } int LIR_Assembler::emit_exception_handler() { // if the last instruction is a call (typically to do a throw which // is coming at the end after block reordering) the return address // must still point into the code area in order to avoid assertion // failures when searching for the corresponding bci => add a nop // (was bug 5/14/1999 - gri) __ nop(); // generate code for exception handler address handler_base = __ start_a_stub(exception_handler_size); if (handler_base == NULL) { // not enough space left for the handler bailout("exception handler overflow"); return -1; } int offset = code_offset(); // the exception oop and pc are in rax, and rdx // no other registers need to be preserved, so invalidate them __ invalidate_registers(false, true, true, false, true, true); // check that there is really an exception __ verify_not_null_oop(rax); // search an exception handler (rax: exception oop, rdx: throwing pc) __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::handle_exception_nofpu_id))); __ stop("should not reach here"); assert(code_offset() - offset <= exception_handler_size, "overflow"); __ end_a_stub(); return offset; } // Emit the code to remove the frame from the stack in the exception // unwind path. int LIR_Assembler::emit_unwind_handler() { #ifndef PRODUCT if (CommentedAssembly) { _masm->block_comment("Unwind handler"); } #endif int offset = code_offset(); // Fetch the exception from TLS and clear out exception related thread state __ get_thread(rsi); __ movptr(rax, Address(rsi, JavaThread::exception_oop_offset())); __ movptr(Address(rsi, JavaThread::exception_oop_offset()), (int32_t)NULL_WORD); __ movptr(Address(rsi, JavaThread::exception_pc_offset()), (int32_t)NULL_WORD); __ bind(_unwind_handler_entry); __ verify_not_null_oop(rax); if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) { __ mov(rsi, rax); // Preserve the exception } // Preform needed unlocking MonitorExitStub* stub = NULL; if (method()->is_synchronized()) { monitor_address(0, FrameMap::rax_opr); stub = new MonitorExitStub(FrameMap::rax_opr, true, 0); __ unlock_object(rdi, rbx, rax, *stub->entry()); __ bind(*stub->continuation()); } if (compilation()->env()->dtrace_method_probes()) { __ get_thread(rax); __ movptr(Address(rsp, 0), rax); __ movoop(Address(rsp, sizeof(void*)), method()->constant_encoding()); __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit))); } if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) { __ mov(rax, rsi); // Restore the exception } // remove the activation and dispatch to the unwind handler __ remove_frame(initial_frame_size_in_bytes()); __ jump(RuntimeAddress(Runtime1::entry_for(Runtime1::unwind_exception_id))); // Emit the slow path assembly if (stub != NULL) { stub->emit_code(this); } return offset; } int LIR_Assembler::emit_deopt_handler() { // if the last instruction is a call (typically to do a throw which // is coming at the end after block reordering) the return address // must still point into the code area in order to avoid assertion // failures when searching for the corresponding bci => add a nop // (was bug 5/14/1999 - gri) __ nop(); // generate code for exception handler address handler_base = __ start_a_stub(deopt_handler_size); if (handler_base == NULL) { // not enough space left for the handler bailout("deopt handler overflow"); return -1; } int offset = code_offset(); InternalAddress here(__ pc()); __ pushptr(here.addr()); __ jump(RuntimeAddress(SharedRuntime::deopt_blob()->unpack())); assert(code_offset() - offset <= deopt_handler_size, "overflow"); __ end_a_stub(); return offset; } // This is the fast version of java.lang.String.compare; it has not // OSR-entry and therefore, we generate a slow version for OSR's void LIR_Assembler::emit_string_compare(LIR_Opr arg0, LIR_Opr arg1, LIR_Opr dst, CodeEmitInfo* info) { __ movptr (rbx, rcx); // receiver is in rcx __ movptr (rax, arg1->as_register()); // Get addresses of first characters from both Strings __ load_heap_oop(rsi, Address(rax, java_lang_String::value_offset_in_bytes())); __ movptr (rcx, Address(rax, java_lang_String::offset_offset_in_bytes())); __ lea (rsi, Address(rsi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); // rbx, may be NULL add_debug_info_for_null_check_here(info); __ load_heap_oop(rdi, Address(rbx, java_lang_String::value_offset_in_bytes())); __ movptr (rcx, Address(rbx, java_lang_String::offset_offset_in_bytes())); __ lea (rdi, Address(rdi, rcx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR))); // compute minimum length (in rax) and difference of lengths (on top of stack) if (VM_Version::supports_cmov()) { __ movl (rbx, Address(rbx, java_lang_String::count_offset_in_bytes())); __ movl (rax, Address(rax, java_lang_String::count_offset_in_bytes())); __ mov (rcx, rbx); __ subptr (rbx, rax); // subtract lengths __ push (rbx); // result __ cmov (Assembler::lessEqual, rax, rcx); } else { Label L; __ movl (rbx, Address(rbx, java_lang_String::count_offset_in_bytes())); __ movl (rcx, Address(rax, java_lang_String::count_offset_in_bytes())); __ mov (rax, rbx); __ subptr (rbx, rcx); __ push (rbx); __ jcc (Assembler::lessEqual, L); __ mov (rax, rcx); __ bind (L); } // is minimum length 0? Label noLoop, haveResult; __ testptr (rax, rax); __ jcc (Assembler::zero, noLoop); // compare first characters __ load_unsigned_short(rcx, Address(rdi, 0)); __ load_unsigned_short(rbx, Address(rsi, 0)); __ subl(rcx, rbx); __ jcc(Assembler::notZero, haveResult); // starting loop __ decrement(rax); // we already tested index: skip one __ jcc(Assembler::zero, noLoop); // set rsi.edi to the end of the arrays (arrays have same length) // negate the index __ lea(rsi, Address(rsi, rax, Address::times_2, type2aelembytes(T_CHAR))); __ lea(rdi, Address(rdi, rax, Address::times_2, type2aelembytes(T_CHAR))); __ negptr(rax); // compare the strings in a loop Label loop; __ align(wordSize); __ bind(loop); __ load_unsigned_short(rcx, Address(rdi, rax, Address::times_2, 0)); __ load_unsigned_short(rbx, Address(rsi, rax, Address::times_2, 0)); __ subl(rcx, rbx); __ jcc(Assembler::notZero, haveResult); __ increment(rax); __ jcc(Assembler::notZero, loop); // strings are equal up to min length __ bind(noLoop); __ pop(rax); return_op(LIR_OprFact::illegalOpr); __ bind(haveResult); // leave instruction is going to discard the TOS value __ mov (rax, rcx); // result of call is in rax, } void LIR_Assembler::return_op(LIR_Opr result) { assert(result->is_illegal() || !result->is_single_cpu() || result->as_register() == rax, "word returns are in rax,"); if (!result->is_illegal() && result->is_float_kind() && !result->is_xmm_register()) { assert(result->fpu() == 0, "result must already be on TOS"); } // Pop the stack before the safepoint code __ remove_frame(initial_frame_size_in_bytes()); bool result_is_oop = result->is_valid() ? result->is_oop() : false; // Note: we do not need to round double result; float result has the right precision // the poll sets the condition code, but no data registers AddressLiteral polling_page(os::get_polling_page() + (SafepointPollOffset % os::vm_page_size()), relocInfo::poll_return_type); // NOTE: the requires that the polling page be reachable else the reloc // goes to the movq that loads the address and not the faulting instruction // which breaks the signal handler code __ test32(rax, polling_page); __ ret(0); } int LIR_Assembler::safepoint_poll(LIR_Opr tmp, CodeEmitInfo* info) { AddressLiteral polling_page(os::get_polling_page() + (SafepointPollOffset % os::vm_page_size()), relocInfo::poll_type); if (info != NULL) { add_debug_info_for_branch(info); } else { ShouldNotReachHere(); } int offset = __ offset(); // NOTE: the requires that the polling page be reachable else the reloc // goes to the movq that loads the address and not the faulting instruction // which breaks the signal handler code __ test32(rax, polling_page); return offset; } void LIR_Assembler::move_regs(Register from_reg, Register to_reg) { if (from_reg != to_reg) __ mov(to_reg, from_reg); } void LIR_Assembler::swap_reg(Register a, Register b) { __ xchgptr(a, b); } void LIR_Assembler::const2reg(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code, CodeEmitInfo* info) { assert(src->is_constant(), "should not call otherwise"); assert(dest->is_register(), "should not call otherwise"); LIR_Const* c = src->as_constant_ptr(); switch (c->type()) { case T_INT: { assert(patch_code == lir_patch_none, "no patching handled here"); __ movl(dest->as_register(), c->as_jint()); break; } case T_ADDRESS: { assert(patch_code == lir_patch_none, "no patching handled here"); __ movptr(dest->as_register(), c->as_jint()); break; } case T_LONG: { assert(patch_code == lir_patch_none, "no patching handled here"); #ifdef _LP64 __ movptr(dest->as_register_lo(), (intptr_t)c->as_jlong()); #else __ movptr(dest->as_register_lo(), c->as_jint_lo()); __ movptr(dest->as_register_hi(), c->as_jint_hi()); #endif // _LP64 break; } case T_OBJECT: { if (patch_code != lir_patch_none) { jobject2reg_with_patching(dest->as_register(), info); } else { __ movoop(dest->as_register(), c->as_jobject()); } break; } case T_FLOAT: { if (dest->is_single_xmm()) { if (c->is_zero_float()) { __ xorps(dest->as_xmm_float_reg(), dest->as_xmm_float_reg()); } else { __ movflt(dest->as_xmm_float_reg(), InternalAddress(float_constant(c->as_jfloat()))); } } else { assert(dest->is_single_fpu(), "must be"); assert(dest->fpu_regnr() == 0, "dest must be TOS"); if (c->is_zero_float()) { __ fldz(); } else if (c->is_one_float()) { __ fld1(); } else { __ fld_s (InternalAddress(float_constant(c->as_jfloat()))); } } break; } case T_DOUBLE: { if (dest->is_double_xmm()) { if (c->is_zero_double()) { __ xorpd(dest->as_xmm_double_reg(), dest->as_xmm_double_reg()); } else { __ movdbl(dest->as_xmm_double_reg(), InternalAddress(double_constant(c->as_jdouble()))); } } else { assert(dest->is_double_fpu(), "must be"); assert(dest->fpu_regnrLo() == 0, "dest must be TOS"); if (c->is_zero_double()) { __ fldz(); } else if (c->is_one_double()) { __ fld1(); } else { __ fld_d (InternalAddress(double_constant(c->as_jdouble()))); } } break; } default: ShouldNotReachHere(); } } void LIR_Assembler::const2stack(LIR_Opr src, LIR_Opr dest) { assert(src->is_constant(), "should not call otherwise"); assert(dest->is_stack(), "should not call otherwise"); LIR_Const* c = src->as_constant_ptr(); switch (c->type()) { case T_INT: // fall through case T_FLOAT: __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jint_bits()); break; case T_ADDRESS: __ movptr(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jint_bits()); break; case T_OBJECT: __ movoop(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jobject()); break; case T_LONG: // fall through case T_DOUBLE: #ifdef _LP64 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(), lo_word_offset_in_bytes), (intptr_t)c->as_jlong_bits()); #else __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(), lo_word_offset_in_bytes), c->as_jint_lo_bits()); __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(), hi_word_offset_in_bytes), c->as_jint_hi_bits()); #endif // _LP64 break; default: ShouldNotReachHere(); } } void LIR_Assembler::const2mem(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info, bool wide) { assert(src->is_constant(), "should not call otherwise"); assert(dest->is_address(), "should not call otherwise"); LIR_Const* c = src->as_constant_ptr(); LIR_Address* addr = dest->as_address_ptr(); int null_check_here = code_offset(); switch (type) { case T_INT: // fall through case T_FLOAT: __ movl(as_Address(addr), c->as_jint_bits()); break; case T_ADDRESS: __ movptr(as_Address(addr), c->as_jint_bits()); break; case T_OBJECT: // fall through case T_ARRAY: if (c->as_jobject() == NULL) { if (UseCompressedOops && !wide) { __ movl(as_Address(addr), (int32_t)NULL_WORD); } else { __ movptr(as_Address(addr), NULL_WORD); } } else { if (is_literal_address(addr)) { ShouldNotReachHere(); __ movoop(as_Address(addr, noreg), c->as_jobject()); } else { #ifdef _LP64 __ movoop(rscratch1, c->as_jobject()); if (UseCompressedOops && !wide) { __ encode_heap_oop(rscratch1); null_check_here = code_offset(); __ movl(as_Address_lo(addr), rscratch1); } else { null_check_here = code_offset(); __ movptr(as_Address_lo(addr), rscratch1); } #else __ movoop(as_Address(addr), c->as_jobject()); #endif } } break; case T_LONG: // fall through case T_DOUBLE: #ifdef _LP64 if (is_literal_address(addr)) { ShouldNotReachHere(); __ movptr(as_Address(addr, r15_thread), (intptr_t)c->as_jlong_bits()); } else { __ movptr(r10, (intptr_t)c->as_jlong_bits()); null_check_here = code_offset(); __ movptr(as_Address_lo(addr), r10); } #else // Always reachable in 32bit so this doesn't produce useless move literal __ movptr(as_Address_hi(addr), c->as_jint_hi_bits()); __ movptr(as_Address_lo(addr), c->as_jint_lo_bits()); #endif // _LP64 break; case T_BOOLEAN: // fall through case T_BYTE: __ movb(as_Address(addr), c->as_jint() & 0xFF); break; case T_CHAR: // fall through case T_SHORT: __ movw(as_Address(addr), c->as_jint() & 0xFFFF); break; default: ShouldNotReachHere(); }; if (info != NULL) { add_debug_info_for_null_check(null_check_here, info); } } void LIR_Assembler::reg2reg(LIR_Opr src, LIR_Opr dest) { assert(src->is_register(), "should not call otherwise"); assert(dest->is_register(), "should not call otherwise"); // move between cpu-registers if (dest->is_single_cpu()) { #ifdef _LP64 if (src->type() == T_LONG) { // Can do LONG -> OBJECT move_regs(src->as_register_lo(), dest->as_register()); return; } #endif assert(src->is_single_cpu(), "must match"); if (src->type() == T_OBJECT) { __ verify_oop(src->as_register()); } move_regs(src->as_register(), dest->as_register()); } else if (dest->is_double_cpu()) { #ifdef _LP64 if (src->type() == T_OBJECT || src->type() == T_ARRAY) { // Surprising to me but we can see move of a long to t_object __ verify_oop(src->as_register()); move_regs(src->as_register(), dest->as_register_lo()); return; } #endif assert(src->is_double_cpu(), "must match"); Register f_lo = src->as_register_lo(); Register f_hi = src->as_register_hi(); Register t_lo = dest->as_register_lo(); Register t_hi = dest->as_register_hi(); #ifdef _LP64 assert(f_hi == f_lo, "must be same"); assert(t_hi == t_lo, "must be same"); move_regs(f_lo, t_lo); #else assert(f_lo != f_hi && t_lo != t_hi, "invalid register allocation"); if (f_lo == t_hi && f_hi == t_lo) { swap_reg(f_lo, f_hi); } else if (f_hi == t_lo) { assert(f_lo != t_hi, "overwriting register"); move_regs(f_hi, t_hi); move_regs(f_lo, t_lo); } else { assert(f_hi != t_lo, "overwriting register"); move_regs(f_lo, t_lo); move_regs(f_hi, t_hi); } #endif // LP64 // special moves from fpu-register to xmm-register // necessary for method results } else if (src->is_single_xmm() && !dest->is_single_xmm()) { __ movflt(Address(rsp, 0), src->as_xmm_float_reg()); __ fld_s(Address(rsp, 0)); } else if (src->is_double_xmm() && !dest->is_double_xmm()) { __ movdbl(Address(rsp, 0), src->as_xmm_double_reg()); __ fld_d(Address(rsp, 0)); } else if (dest->is_single_xmm() && !src->is_single_xmm()) { __ fstp_s(Address(rsp, 0)); __ movflt(dest->as_xmm_float_reg(), Address(rsp, 0)); } else if (dest->is_double_xmm() && !src->is_double_xmm()) { __ fstp_d(Address(rsp, 0)); __ movdbl(dest->as_xmm_double_reg(), Address(rsp, 0)); // move between xmm-registers } else if (dest->is_single_xmm()) { assert(src->is_single_xmm(), "must match"); __ movflt(dest->as_xmm_float_reg(), src->as_xmm_float_reg()); } else if (dest->is_double_xmm()) { assert(src->is_double_xmm(), "must match"); __ movdbl(dest->as_xmm_double_reg(), src->as_xmm_double_reg()); // move between fpu-registers (no instruction necessary because of fpu-stack) } else if (dest->is_single_fpu() || dest->is_double_fpu()) { assert(src->is_single_fpu() || src->is_double_fpu(), "must match"); assert(src->fpu() == dest->fpu(), "currently should be nothing to do"); } else { ShouldNotReachHere(); } } void LIR_Assembler::reg2stack(LIR_Opr src, LIR_Opr dest, BasicType type, bool pop_fpu_stack) { assert(src->is_register(), "should not call otherwise"); assert(dest->is_stack(), "should not call otherwise"); if (src->is_single_cpu()) { Address dst = frame_map()->address_for_slot(dest->single_stack_ix()); if (type == T_OBJECT || type == T_ARRAY) { __ verify_oop(src->as_register()); __ movptr (dst, src->as_register()); } else { __ movl (dst, src->as_register()); } } else if (src->is_double_cpu()) { Address dstLO = frame_map()->address_for_slot(dest->double_stack_ix(), lo_word_offset_in_bytes); Address dstHI = frame_map()->address_for_slot(dest->double_stack_ix(), hi_word_offset_in_bytes); __ movptr (dstLO, src->as_register_lo()); NOT_LP64(__ movptr (dstHI, src->as_register_hi())); } else if (src->is_single_xmm()) { Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix()); __ movflt(dst_addr, src->as_xmm_float_reg()); } else if (src->is_double_xmm()) { Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix()); __ movdbl(dst_addr, src->as_xmm_double_reg()); } else if (src->is_single_fpu()) { assert(src->fpu_regnr() == 0, "argument must be on TOS"); Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix()); if (pop_fpu_stack) __ fstp_s (dst_addr); else __ fst_s (dst_addr); } else if (src->is_double_fpu()) { assert(src->fpu_regnrLo() == 0, "argument must be on TOS"); Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix()); if (pop_fpu_stack) __ fstp_d (dst_addr); else __ fst_d (dst_addr); } else { ShouldNotReachHere(); } } void LIR_Assembler::reg2mem(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool pop_fpu_stack, bool wide, bool /* unaligned */) { LIR_Address* to_addr = dest->as_address_ptr(); PatchingStub* patch = NULL; Register compressed_src = rscratch1; if (type == T_ARRAY || type == T_OBJECT) { __ verify_oop(src->as_register()); #ifdef _LP64 if (UseCompressedOops && !wide) { __ movptr(compressed_src, src->as_register()); __ encode_heap_oop(compressed_src); } #endif } if (patch_code != lir_patch_none) { patch = new PatchingStub(_masm, PatchingStub::access_field_id); Address toa = as_Address(to_addr); assert(toa.disp() != 0, "must have"); } int null_check_here = code_offset(); switch (type) { case T_FLOAT: { if (src->is_single_xmm()) { __ movflt(as_Address(to_addr), src->as_xmm_float_reg()); } else { assert(src->is_single_fpu(), "must be"); assert(src->fpu_regnr() == 0, "argument must be on TOS"); if (pop_fpu_stack) __ fstp_s(as_Address(to_addr)); else __ fst_s (as_Address(to_addr)); } break; } case T_DOUBLE: { if (src->is_double_xmm()) { __ movdbl(as_Address(to_addr), src->as_xmm_double_reg()); } else { assert(src->is_double_fpu(), "must be"); assert(src->fpu_regnrLo() == 0, "argument must be on TOS"); if (pop_fpu_stack) __ fstp_d(as_Address(to_addr)); else __ fst_d (as_Address(to_addr)); } break; } case T_ARRAY: // fall through case T_OBJECT: // fall through if (UseCompressedOops && !wide) { __ movl(as_Address(to_addr), compressed_src); } else { __ movptr(as_Address(to_addr), src->as_register()); } break; case T_ADDRESS: __ movptr(as_Address(to_addr), src->as_register()); break; case T_INT: __ movl(as_Address(to_addr), src->as_register()); break; case T_LONG: { Register from_lo = src->as_register_lo(); Register from_hi = src->as_register_hi(); #ifdef _LP64 __ movptr(as_Address_lo(to_addr), from_lo); #else Register base = to_addr->base()->as_register(); Register index = noreg; if (to_addr->index()->is_register()) { index = to_addr->index()->as_register(); } if (base == from_lo || index == from_lo) { assert(base != from_hi, "can't be"); assert(index == noreg || (index != base && index != from_hi), "can't handle this"); __ movl(as_Address_hi(to_addr), from_hi); if (patch != NULL) { patching_epilog(patch, lir_patch_high, base, info); patch = new PatchingStub(_masm, PatchingStub::access_field_id); patch_code = lir_patch_low; } __ movl(as_Address_lo(to_addr), from_lo); } else { assert(index == noreg || (index != base && index != from_lo), "can't handle this"); __ movl(as_Address_lo(to_addr), from_lo); if (patch != NULL) { patching_epilog(patch, lir_patch_low, base, info); patch = new PatchingStub(_masm, PatchingStub::access_field_id); patch_code = lir_patch_high; } __ movl(as_Address_hi(to_addr), from_hi); } #endif // _LP64 break; } case T_BYTE: // fall through case T_BOOLEAN: { Register src_reg = src->as_register(); Address dst_addr = as_Address(to_addr); assert(VM_Version::is_P6() || src_reg->has_byte_register(), "must use byte registers if not P6"); __ movb(dst_addr, src_reg); break; } case T_CHAR: // fall through case T_SHORT: __ movw(as_Address(to_addr), src->as_register()); break; default: ShouldNotReachHere(); } if (info != NULL) { add_debug_info_for_null_check(null_check_here, info); } if (patch_code != lir_patch_none) { patching_epilog(patch, patch_code, to_addr->base()->as_register(), info); } } void LIR_Assembler::stack2reg(LIR_Opr src, LIR_Opr dest, BasicType type) { assert(src->is_stack(), "should not call otherwise"); assert(dest->is_register(), "should not call otherwise"); if (dest->is_single_cpu()) { if (type == T_ARRAY || type == T_OBJECT) { __ movptr(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix())); __ verify_oop(dest->as_register()); } else { __ movl(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix())); } } else if (dest->is_double_cpu()) { Address src_addr_LO = frame_map()->address_for_slot(src->double_stack_ix(), lo_word_offset_in_bytes); Address src_addr_HI = frame_map()->address_for_slot(src->double_stack_ix(), hi_word_offset_in_bytes); __ movptr(dest->as_register_lo(), src_addr_LO); NOT_LP64(__ movptr(dest->as_register_hi(), src_addr_HI)); } else if (dest->is_single_xmm()) { Address src_addr = frame_map()->address_for_slot(src->single_stack_ix()); __ movflt(dest->as_xmm_float_reg(), src_addr); } else if (dest->is_double_xmm()) { Address src_addr = frame_map()->address_for_slot(src->double_stack_ix()); __ movdbl(dest->as_xmm_double_reg(), src_addr); } else if (dest->is_single_fpu()) { assert(dest->fpu_regnr() == 0, "dest must be TOS"); Address src_addr = frame_map()->address_for_slot(src->single_stack_ix()); __ fld_s(src_addr); } else if (dest->is_double_fpu()) { assert(dest->fpu_regnrLo() == 0, "dest must be TOS"); Address src_addr = frame_map()->address_for_slot(src->double_stack_ix()); __ fld_d(src_addr); } else { ShouldNotReachHere(); } } void LIR_Assembler::stack2stack(LIR_Opr src, LIR_Opr dest, BasicType type) { if (src->is_single_stack()) { if (type == T_OBJECT || type == T_ARRAY) { __ pushptr(frame_map()->address_for_slot(src ->single_stack_ix())); __ popptr (frame_map()->address_for_slot(dest->single_stack_ix())); } else { #ifndef _LP64 __ pushl(frame_map()->address_for_slot(src ->single_stack_ix())); __ popl (frame_map()->address_for_slot(dest->single_stack_ix())); #else //no pushl on 64bits __ movl(rscratch1, frame_map()->address_for_slot(src ->single_stack_ix())); __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), rscratch1); #endif } } else if (src->is_double_stack()) { #ifdef _LP64 __ pushptr(frame_map()->address_for_slot(src ->double_stack_ix())); __ popptr (frame_map()->address_for_slot(dest->double_stack_ix())); #else __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 0)); // push and pop the part at src + wordSize, adding wordSize for the previous push __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 2 * wordSize)); __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 2 * wordSize)); __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 0)); #endif // _LP64 } else { ShouldNotReachHere(); } } void LIR_Assembler::mem2reg(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool wide, bool /* unaligned */) { assert(src->is_address(), "should not call otherwise"); assert(dest->is_register(), "should not call otherwise"); LIR_Address* addr = src->as_address_ptr(); Address from_addr = as_Address(addr); switch (type) { case T_BOOLEAN: // fall through case T_BYTE: // fall through case T_CHAR: // fall through case T_SHORT: if (!VM_Version::is_P6() && !from_addr.uses(dest->as_register())) { // on pre P6 processors we may get partial register stalls // so blow away the value of to_rinfo before loading a // partial word into it. Do it here so that it precedes // the potential patch point below. __ xorptr(dest->as_register(), dest->as_register()); } break; } PatchingStub* patch = NULL; if (patch_code != lir_patch_none) { patch = new PatchingStub(_masm, PatchingStub::access_field_id); assert(from_addr.disp() != 0, "must have"); } if (info != NULL) { add_debug_info_for_null_check_here(info); } switch (type) { case T_FLOAT: { if (dest->is_single_xmm()) { __ movflt(dest->as_xmm_float_reg(), from_addr); } else { assert(dest->is_single_fpu(), "must be"); assert(dest->fpu_regnr() == 0, "dest must be TOS"); __ fld_s(from_addr); } break; } case T_DOUBLE: { if (dest->is_double_xmm()) { __ movdbl(dest->as_xmm_double_reg(), from_addr); } else { assert(dest->is_double_fpu(), "must be"); assert(dest->fpu_regnrLo() == 0, "dest must be TOS"); __ fld_d(from_addr); } break; } case T_OBJECT: // fall through case T_ARRAY: // fall through if (UseCompressedOops && !wide) { __ movl(dest->as_register(), from_addr); } else { __ movptr(dest->as_register(), from_addr); } break; case T_ADDRESS: __ movptr(dest->as_register(), from_addr); break; case T_INT: __ movl(dest->as_register(), from_addr); break; case T_LONG: { Register to_lo = dest->as_register_lo(); Register to_hi = dest->as_register_hi(); #ifdef _LP64 __ movptr(to_lo, as_Address_lo(addr)); #else Register base = addr->base()->as_register(); Register index = noreg; if (addr->index()->is_register()) { index = addr->index()->as_register(); } if ((base == to_lo && index == to_hi) || (base == to_hi && index == to_lo)) { // addresses with 2 registers are only formed as a result of // array access so this code will never have to deal with // patches or null checks. assert(info == NULL && patch == NULL, "must be"); __ lea(to_hi, as_Address(addr)); __ movl(to_lo, Address(to_hi, 0)); __ movl(to_hi, Address(to_hi, BytesPerWord)); } else if (base == to_lo || index == to_lo) { assert(base != to_hi, "can't be"); assert(index == noreg || (index != base && index != to_hi), "can't handle this"); __ movl(to_hi, as_Address_hi(addr)); if (patch != NULL) { patching_epilog(patch, lir_patch_high, base, info); patch = new PatchingStub(_masm, PatchingStub::access_field_id); patch_code = lir_patch_low; } __ movl(to_lo, as_Address_lo(addr)); } else { assert(index == noreg || (index != base && index != to_lo), "can't handle this"); __ movl(to_lo, as_Address_lo(addr)); if (patch != NULL) { patching_epilog(patch, lir_patch_low, base, info); patch = new PatchingStub(_masm, PatchingStub::access_field_id); patch_code = lir_patch_high; } __ movl(to_hi, as_Address_hi(addr)); } #endif // _LP64 break; } case T_BOOLEAN: // fall through case T_BYTE: { Register dest_reg = dest->as_register(); assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6"); if (VM_Version::is_P6() || from_addr.uses(dest_reg)) { __ movsbl(dest_reg, from_addr); } else { __ movb(dest_reg, from_addr); __ shll(dest_reg, 24); __ sarl(dest_reg, 24); } break; } case T_CHAR: { Register dest_reg = dest->as_register(); assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6"); if (VM_Version::is_P6() || from_addr.uses(dest_reg)) { __ movzwl(dest_reg, from_addr); } else { __ movw(dest_reg, from_addr); } break; } case T_SHORT: { Register dest_reg = dest->as_register(); if (VM_Version::is_P6() || from_addr.uses(dest_reg)) { __ movswl(dest_reg, from_addr); } else { __ movw(dest_reg, from_addr); __ shll(dest_reg, 16); __ sarl(dest_reg, 16); } break; } default: ShouldNotReachHere(); } if (patch != NULL) { patching_epilog(patch, patch_code, addr->base()->as_register(), info); } if (type == T_ARRAY || type == T_OBJECT) { #ifdef _LP64 if (UseCompressedOops && !wide) { __ decode_heap_oop(dest->as_register()); } #endif __ verify_oop(dest->as_register()); } } void LIR_Assembler::prefetchr(LIR_Opr src) { LIR_Address* addr = src->as_address_ptr(); Address from_addr = as_Address(addr); if (VM_Version::supports_sse()) { switch (ReadPrefetchInstr) { case 0: __ prefetchnta(from_addr); break; case 1: __ prefetcht0(from_addr); break; case 2: __ prefetcht2(from_addr); break; default: ShouldNotReachHere(); break; } } else if (VM_Version::supports_3dnow()) { __ prefetchr(from_addr); } } void LIR_Assembler::prefetchw(LIR_Opr src) { LIR_Address* addr = src->as_address_ptr(); Address from_addr = as_Address(addr); if (VM_Version::supports_sse()) { switch (AllocatePrefetchInstr) { case 0: __ prefetchnta(from_addr); break; case 1: __ prefetcht0(from_addr); break; case 2: __ prefetcht2(from_addr); break; case 3: __ prefetchw(from_addr); break; default: ShouldNotReachHere(); break; } } else if (VM_Version::supports_3dnow()) { __ prefetchw(from_addr); } } NEEDS_CLEANUP; // This could be static? Address::ScaleFactor LIR_Assembler::array_element_size(BasicType type) const { int elem_size = type2aelembytes(type); switch (elem_size) { case 1: return Address::times_1; case 2: return Address::times_2; case 4: return Address::times_4; case 8: return Address::times_8; } ShouldNotReachHere(); return Address::no_scale; } void LIR_Assembler::emit_op3(LIR_Op3* op) { switch (op->code()) { case lir_idiv: case lir_irem: arithmetic_idiv(op->code(), op->in_opr1(), op->in_opr2(), op->in_opr3(), op->result_opr(), op->info()); break; default: ShouldNotReachHere(); break; } } void LIR_Assembler::emit_opBranch(LIR_OpBranch* op) { #ifdef ASSERT assert(op->block() == NULL || op->block()->label() == op->label(), "wrong label"); if (op->block() != NULL) _branch_target_blocks.append(op->block()); if (op->ublock() != NULL) _branch_target_blocks.append(op->ublock()); #endif if (op->cond() == lir_cond_always) { if (op->info() != NULL) add_debug_info_for_branch(op->info()); __ jmp (*(op->label())); } else { Assembler::Condition acond = Assembler::zero; if (op->code() == lir_cond_float_branch) { assert(op->ublock() != NULL, "must have unordered successor"); __ jcc(Assembler::parity, *(op->ublock()->label())); switch(op->cond()) { case lir_cond_equal: acond = Assembler::equal; break; case lir_cond_notEqual: acond = Assembler::notEqual; break; case lir_cond_less: acond = Assembler::below; break; case lir_cond_lessEqual: acond = Assembler::belowEqual; break; case lir_cond_greaterEqual: acond = Assembler::aboveEqual; break; case lir_cond_greater: acond = Assembler::above; break; default: ShouldNotReachHere(); } } else { switch (op->cond()) { case lir_cond_equal: acond = Assembler::equal; break; case lir_cond_notEqual: acond = Assembler::notEqual; break; case lir_cond_less: acond = Assembler::less; break; case lir_cond_lessEqual: acond = Assembler::lessEqual; break; case lir_cond_greaterEqual: acond = Assembler::greaterEqual;break; case lir_cond_greater: acond = Assembler::greater; break; case lir_cond_belowEqual: acond = Assembler::belowEqual; break; case lir_cond_aboveEqual: acond = Assembler::aboveEqual; break; default: ShouldNotReachHere(); } } __ jcc(acond,*(op->label())); } } void LIR_Assembler::emit_opConvert(LIR_OpConvert* op) { LIR_Opr src = op->in_opr(); LIR_Opr dest = op->result_opr(); switch (op->bytecode()) { case Bytecodes::_i2l: #ifdef _LP64 __ movl2ptr(dest->as_register_lo(), src->as_register()); #else move_regs(src->as_register(), dest->as_register_lo()); move_regs(src->as_register(), dest->as_register_hi()); __ sarl(dest->as_register_hi(), 31); #endif // LP64 break; case Bytecodes::_l2i: move_regs(src->as_register_lo(), dest->as_register()); break; case Bytecodes::_i2b: move_regs(src->as_register(), dest->as_register()); __ sign_extend_byte(dest->as_register()); break; case Bytecodes::_i2c: move_regs(src->as_register(), dest->as_register()); __ andl(dest->as_register(), 0xFFFF); break; case Bytecodes::_i2s: move_regs(src->as_register(), dest->as_register()); __ sign_extend_short(dest->as_register()); break; case Bytecodes::_f2d: case Bytecodes::_d2f: if (dest->is_single_xmm()) { __ cvtsd2ss(dest->as_xmm_float_reg(), src->as_xmm_double_reg()); } else if (dest->is_double_xmm()) { __ cvtss2sd(dest->as_xmm_double_reg(), src->as_xmm_float_reg()); } else { assert(src->fpu() == dest->fpu(), "register must be equal"); // do nothing (float result is rounded later through spilling) } break; case Bytecodes::_i2f: case Bytecodes::_i2d: if (dest->is_single_xmm()) { __ cvtsi2ssl(dest->as_xmm_float_reg(), src->as_register()); } else if (dest->is_double_xmm()) { __ cvtsi2sdl(dest->as_xmm_double_reg(), src->as_register()); } else { assert(dest->fpu() == 0, "result must be on TOS"); __ movl(Address(rsp, 0), src->as_register()); __ fild_s(Address(rsp, 0)); } break; case Bytecodes::_f2i: case Bytecodes::_d2i: if (src->is_single_xmm()) { __ cvttss2sil(dest->as_register(), src->as_xmm_float_reg()); } else if (src->is_double_xmm()) { __ cvttsd2sil(dest->as_register(), src->as_xmm_double_reg()); } else { assert(src->fpu() == 0, "input must be on TOS"); __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_trunc())); __ fist_s(Address(rsp, 0)); __ movl(dest->as_register(), Address(rsp, 0)); __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); } // IA32 conversion instructions do not match JLS for overflow, underflow and NaN -> fixup in stub assert(op->stub() != NULL, "stub required"); __ cmpl(dest->as_register(), 0x80000000); __ jcc(Assembler::equal, *op->stub()->entry()); __ bind(*op->stub()->continuation()); break; case Bytecodes::_l2f: case Bytecodes::_l2d: assert(!dest->is_xmm_register(), "result in xmm register not supported (no SSE instruction present)"); assert(dest->fpu() == 0, "result must be on TOS"); __ movptr(Address(rsp, 0), src->as_register_lo()); NOT_LP64(__ movl(Address(rsp, BytesPerWord), src->as_register_hi())); __ fild_d(Address(rsp, 0)); // float result is rounded later through spilling break; case Bytecodes::_f2l: case Bytecodes::_d2l: assert(!src->is_xmm_register(), "input in xmm register not supported (no SSE instruction present)"); assert(src->fpu() == 0, "input must be on TOS"); assert(dest == FrameMap::long0_opr, "runtime stub places result in these registers"); // instruction sequence too long to inline it here { __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::fpu2long_stub_id))); } break; default: ShouldNotReachHere(); } } void LIR_Assembler::emit_alloc_obj(LIR_OpAllocObj* op) { if (op->init_check()) { __ cmpl(Address(op->klass()->as_register(), instanceKlass::init_state_offset_in_bytes() + sizeof(oopDesc)), instanceKlass::fully_initialized); add_debug_info_for_null_check_here(op->stub()->info()); __ jcc(Assembler::notEqual, *op->stub()->entry()); } __ allocate_object(op->obj()->as_register(), op->tmp1()->as_register(), op->tmp2()->as_register(), op->header_size(), op->object_size(), op->klass()->as_register(), *op->stub()->entry()); __ bind(*op->stub()->continuation()); } void LIR_Assembler::emit_alloc_array(LIR_OpAllocArray* op) { if (UseSlowPath || (!UseFastNewObjectArray && (op->type() == T_OBJECT || op->type() == T_ARRAY)) || (!UseFastNewTypeArray && (op->type() != T_OBJECT && op->type() != T_ARRAY))) { __ jmp(*op->stub()->entry()); } else { Register len = op->len()->as_register(); Register tmp1 = op->tmp1()->as_register(); Register tmp2 = op->tmp2()->as_register(); Register tmp3 = op->tmp3()->as_register(); if (len == tmp1) { tmp1 = tmp3; } else if (len == tmp2) { tmp2 = tmp3; } else if (len == tmp3) { // everything is ok } else { __ mov(tmp3, len); } __ allocate_array(op->obj()->as_register(), len, tmp1, tmp2, arrayOopDesc::header_size(op->type()), array_element_size(op->type()), op->klass()->as_register(), *op->stub()->entry()); } __ bind(*op->stub()->continuation()); } void LIR_Assembler::type_profile_helper(Register mdo, ciMethodData *md, ciProfileData *data, Register recv, Label* update_done) { for (uint i = 0; i < ReceiverTypeData::row_limit(); i++) { Label next_test; // See if the receiver is receiver[n]. __ cmpptr(recv, Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i)))); __ jccb(Assembler::notEqual, next_test); Address data_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i))); __ addptr(data_addr, DataLayout::counter_increment); __ jmp(*update_done); __ bind(next_test); } // Didn't find receiver; find next empty slot and fill it in for (uint i = 0; i < ReceiverTypeData::row_limit(); i++) { Label next_test; Address recv_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i))); __ cmpptr(recv_addr, (intptr_t)NULL_WORD); __ jccb(Assembler::notEqual, next_test); __ movptr(recv_addr, recv); __ movptr(Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i))), DataLayout::counter_increment); __ jmp(*update_done); __ bind(next_test); } } void LIR_Assembler::emit_typecheck_helper(LIR_OpTypeCheck *op, Label* success, Label* failure, Label* obj_is_null) { // we always need a stub for the failure case. CodeStub* stub = op->stub(); Register obj = op->object()->as_register(); Register k_RInfo = op->tmp1()->as_register(); Register klass_RInfo = op->tmp2()->as_register(); Register dst = op->result_opr()->as_register(); ciKlass* k = op->klass(); Register Rtmp1 = noreg; // check if it needs to be profiled ciMethodData* md; ciProfileData* data; if (op->should_profile()) { ciMethod* method = op->profiled_method(); assert(method != NULL, "Should have method"); int bci = op->profiled_bci(); md = method->method_data_or_null(); assert(md != NULL, "Sanity"); data = md->bci_to_data(bci); assert(data != NULL, "need data for type check"); assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check"); } Label profile_cast_success, profile_cast_failure; Label *success_target = op->should_profile() ? &profile_cast_success : success; Label *failure_target = op->should_profile() ? &profile_cast_failure : failure; if (obj == k_RInfo) { k_RInfo = dst; } else if (obj == klass_RInfo) { klass_RInfo = dst; } if (k->is_loaded() && !UseCompressedOops) { select_different_registers(obj, dst, k_RInfo, klass_RInfo); } else { Rtmp1 = op->tmp3()->as_register(); select_different_registers(obj, dst, k_RInfo, klass_RInfo, Rtmp1); } assert_different_registers(obj, k_RInfo, klass_RInfo); if (!k->is_loaded()) { jobject2reg_with_patching(k_RInfo, op->info_for_patch()); } else { #ifdef _LP64 __ movoop(k_RInfo, k->constant_encoding()); #endif // _LP64 } assert(obj != k_RInfo, "must be different"); __ cmpptr(obj, (int32_t)NULL_WORD); if (op->should_profile()) { Label not_null; __ jccb(Assembler::notEqual, not_null); // Object is null; update MDO and exit Register mdo = klass_RInfo; __ movoop(mdo, md->constant_encoding()); Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::header_offset())); int header_bits = DataLayout::flag_mask_to_header_mask(BitData::null_seen_byte_constant()); __ orl(data_addr, header_bits); __ jmp(*obj_is_null); __ bind(not_null); } else { __ jcc(Assembler::equal, *obj_is_null); } __ verify_oop(obj); if (op->fast_check()) { // get object class // not a safepoint as obj null check happens earlier #ifdef _LP64 if (UseCompressedOops) { __ load_klass(Rtmp1, obj); __ cmpptr(k_RInfo, Rtmp1); } else { __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); } #else if (k->is_loaded()) { __ cmpoop(Address(obj, oopDesc::klass_offset_in_bytes()), k->constant_encoding()); } else { __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); } #endif __ jcc(Assembler::notEqual, *failure_target); // successful cast, fall through to profile or jump } else { // get object class // not a safepoint as obj null check happens earlier __ load_klass(klass_RInfo, obj); if (k->is_loaded()) { // See if we get an immediate positive hit #ifdef _LP64 __ cmpptr(k_RInfo, Address(klass_RInfo, k->super_check_offset())); #else __ cmpoop(Address(klass_RInfo, k->super_check_offset()), k->constant_encoding()); #endif // _LP64 if (sizeof(oopDesc) + Klass::secondary_super_cache_offset_in_bytes() != k->super_check_offset()) { __ jcc(Assembler::notEqual, *failure_target); // successful cast, fall through to profile or jump } else { // See if we get an immediate positive hit __ jcc(Assembler::equal, *success_target); // check for self #ifdef _LP64 __ cmpptr(klass_RInfo, k_RInfo); #else __ cmpoop(klass_RInfo, k->constant_encoding()); #endif // _LP64 __ jcc(Assembler::equal, *success_target); __ push(klass_RInfo); #ifdef _LP64 __ push(k_RInfo); #else __ pushoop(k->constant_encoding()); #endif // _LP64 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); __ pop(klass_RInfo); __ pop(klass_RInfo); // result is a boolean __ cmpl(klass_RInfo, 0); __ jcc(Assembler::equal, *failure_target); // successful cast, fall through to profile or jump } } else { // perform the fast part of the checking logic __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, success_target, failure_target, NULL); // call out-of-line instance of __ check_klass_subtype_slow_path(...): __ push(klass_RInfo); __ push(k_RInfo); __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); __ pop(klass_RInfo); __ pop(k_RInfo); // result is a boolean __ cmpl(k_RInfo, 0); __ jcc(Assembler::equal, *failure_target); // successful cast, fall through to profile or jump } } if (op->should_profile()) { Register mdo = klass_RInfo, recv = k_RInfo; __ bind(profile_cast_success); __ movoop(mdo, md->constant_encoding()); __ load_klass(recv, obj); Label update_done; type_profile_helper(mdo, md, data, recv, success); __ jmp(*success); __ bind(profile_cast_failure); __ movoop(mdo, md->constant_encoding()); Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset())); __ subptr(counter_addr, DataLayout::counter_increment); __ jmp(*failure); } __ jmp(*success); } void LIR_Assembler::emit_opTypeCheck(LIR_OpTypeCheck* op) { LIR_Code code = op->code(); if (code == lir_store_check) { Register value = op->object()->as_register(); Register array = op->array()->as_register(); Register k_RInfo = op->tmp1()->as_register(); Register klass_RInfo = op->tmp2()->as_register(); Register Rtmp1 = op->tmp3()->as_register(); CodeStub* stub = op->stub(); // check if it needs to be profiled ciMethodData* md; ciProfileData* data; if (op->should_profile()) { ciMethod* method = op->profiled_method(); assert(method != NULL, "Should have method"); int bci = op->profiled_bci(); md = method->method_data_or_null(); assert(md != NULL, "Sanity"); data = md->bci_to_data(bci); assert(data != NULL, "need data for type check"); assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check"); } Label profile_cast_success, profile_cast_failure, done; Label *success_target = op->should_profile() ? &profile_cast_success : &done; Label *failure_target = op->should_profile() ? &profile_cast_failure : stub->entry(); __ cmpptr(value, (int32_t)NULL_WORD); if (op->should_profile()) { Label not_null; __ jccb(Assembler::notEqual, not_null); // Object is null; update MDO and exit Register mdo = klass_RInfo; __ movoop(mdo, md->constant_encoding()); Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::header_offset())); int header_bits = DataLayout::flag_mask_to_header_mask(BitData::null_seen_byte_constant()); __ orl(data_addr, header_bits); __ jmp(done); __ bind(not_null); } else { __ jcc(Assembler::equal, done); } add_debug_info_for_null_check_here(op->info_for_exception()); __ load_klass(k_RInfo, array); __ load_klass(klass_RInfo, value); // get instance klass (it's already uncompressed) __ movptr(k_RInfo, Address(k_RInfo, objArrayKlass::element_klass_offset_in_bytes() + sizeof(oopDesc))); // perform the fast part of the checking logic __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, success_target, failure_target, NULL); // call out-of-line instance of __ check_klass_subtype_slow_path(...): __ push(klass_RInfo); __ push(k_RInfo); __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); __ pop(klass_RInfo); __ pop(k_RInfo); // result is a boolean __ cmpl(k_RInfo, 0); __ jcc(Assembler::equal, *failure_target); // fall through to the success case if (op->should_profile()) { Register mdo = klass_RInfo, recv = k_RInfo; __ bind(profile_cast_success); __ movoop(mdo, md->constant_encoding()); __ load_klass(recv, value); Label update_done; type_profile_helper(mdo, md, data, recv, &done); __ jmpb(done); __ bind(profile_cast_failure); __ movoop(mdo, md->constant_encoding()); Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset())); __ subptr(counter_addr, DataLayout::counter_increment); __ jmp(*stub->entry()); } __ bind(done); } else if (code == lir_checkcast) { Register obj = op->object()->as_register(); Register dst = op->result_opr()->as_register(); Label success; emit_typecheck_helper(op, &success, op->stub()->entry(), &success); __ bind(success); if (dst != obj) { __ mov(dst, obj); } } else if (code == lir_instanceof) { Register obj = op->object()->as_register(); Register dst = op->result_opr()->as_register(); Label success, failure, done; emit_typecheck_helper(op, &success, &failure, &failure); __ bind(failure); __ xorptr(dst, dst); __ jmpb(done); __ bind(success); __ movptr(dst, 1); __ bind(done); } else { ShouldNotReachHere(); } } void LIR_Assembler::emit_compare_and_swap(LIR_OpCompareAndSwap* op) { if (LP64_ONLY(false &&) op->code() == lir_cas_long && VM_Version::supports_cx8()) { assert(op->cmp_value()->as_register_lo() == rax, "wrong register"); assert(op->cmp_value()->as_register_hi() == rdx, "wrong register"); assert(op->new_value()->as_register_lo() == rbx, "wrong register"); assert(op->new_value()->as_register_hi() == rcx, "wrong register"); Register addr = op->addr()->as_register(); if (os::is_MP()) { __ lock(); } NOT_LP64(__ cmpxchg8(Address(addr, 0))); } else if (op->code() == lir_cas_int || op->code() == lir_cas_obj ) { NOT_LP64(assert(op->addr()->is_single_cpu(), "must be single");) Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo()); Register newval = op->new_value()->as_register(); Register cmpval = op->cmp_value()->as_register(); assert(cmpval == rax, "wrong register"); assert(newval != NULL, "new val must be register"); assert(cmpval != newval, "cmp and new values must be in different registers"); assert(cmpval != addr, "cmp and addr must be in different registers"); assert(newval != addr, "new value and addr must be in different registers"); if ( op->code() == lir_cas_obj) { #ifdef _LP64 if (UseCompressedOops) { __ mov(rscratch1, cmpval); __ encode_heap_oop(cmpval); __ mov(rscratch2, newval); __ encode_heap_oop(rscratch2); if (os::is_MP()) { __ lock(); } __ cmpxchgl(rscratch2, Address(addr, 0)); __ mov(cmpval, rscratch1); } else #endif { if (os::is_MP()) { __ lock(); } __ cmpxchgptr(newval, Address(addr, 0)); } } else { assert(op->code() == lir_cas_int, "lir_cas_int expected"); if (os::is_MP()) { __ lock(); } __ cmpxchgl(newval, Address(addr, 0)); } #ifdef _LP64 } else if (op->code() == lir_cas_long) { Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo()); Register newval = op->new_value()->as_register_lo(); Register cmpval = op->cmp_value()->as_register_lo(); assert(cmpval == rax, "wrong register"); assert(newval != NULL, "new val must be register"); assert(cmpval != newval, "cmp and new values must be in different registers"); assert(cmpval != addr, "cmp and addr must be in different registers"); assert(newval != addr, "new value and addr must be in different registers"); if (os::is_MP()) { __ lock(); } __ cmpxchgq(newval, Address(addr, 0)); #endif // _LP64 } else { Unimplemented(); } } void LIR_Assembler::cmove(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result) { Assembler::Condition acond, ncond; switch (condition) { case lir_cond_equal: acond = Assembler::equal; ncond = Assembler::notEqual; break; case lir_cond_notEqual: acond = Assembler::notEqual; ncond = Assembler::equal; break; case lir_cond_less: acond = Assembler::less; ncond = Assembler::greaterEqual; break; case lir_cond_lessEqual: acond = Assembler::lessEqual; ncond = Assembler::greater; break; case lir_cond_greaterEqual: acond = Assembler::greaterEqual; ncond = Assembler::less; break; case lir_cond_greater: acond = Assembler::greater; ncond = Assembler::lessEqual; break; case lir_cond_belowEqual: acond = Assembler::belowEqual; ncond = Assembler::above; break; case lir_cond_aboveEqual: acond = Assembler::aboveEqual; ncond = Assembler::below; break; default: ShouldNotReachHere(); } if (opr1->is_cpu_register()) { reg2reg(opr1, result); } else if (opr1->is_stack()) { stack2reg(opr1, result, result->type()); } else if (opr1->is_constant()) { const2reg(opr1, result, lir_patch_none, NULL); } else { ShouldNotReachHere(); } if (VM_Version::supports_cmov() && !opr2->is_constant()) { // optimized version that does not require a branch if (opr2->is_single_cpu()) { assert(opr2->cpu_regnr() != result->cpu_regnr(), "opr2 already overwritten by previous move"); __ cmov(ncond, result->as_register(), opr2->as_register()); } else if (opr2->is_double_cpu()) { assert(opr2->cpu_regnrLo() != result->cpu_regnrLo() && opr2->cpu_regnrLo() != result->cpu_regnrHi(), "opr2 already overwritten by previous move"); assert(opr2->cpu_regnrHi() != result->cpu_regnrLo() && opr2->cpu_regnrHi() != result->cpu_regnrHi(), "opr2 already overwritten by previous move"); __ cmovptr(ncond, result->as_register_lo(), opr2->as_register_lo()); NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), opr2->as_register_hi());) } else if (opr2->is_single_stack()) { __ cmovl(ncond, result->as_register(), frame_map()->address_for_slot(opr2->single_stack_ix())); } else if (opr2->is_double_stack()) { __ cmovptr(ncond, result->as_register_lo(), frame_map()->address_for_slot(opr2->double_stack_ix(), lo_word_offset_in_bytes)); NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), frame_map()->address_for_slot(opr2->double_stack_ix(), hi_word_offset_in_bytes));) } else { ShouldNotReachHere(); } } else { Label skip; __ jcc (acond, skip); if (opr2->is_cpu_register()) { reg2reg(opr2, result); } else if (opr2->is_stack()) { stack2reg(opr2, result, result->type()); } else if (opr2->is_constant()) { const2reg(opr2, result, lir_patch_none, NULL); } else { ShouldNotReachHere(); } __ bind(skip); } } void LIR_Assembler::arith_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest, CodeEmitInfo* info, bool pop_fpu_stack) { assert(info == NULL, "should never be used, idiv/irem and ldiv/lrem not handled by this method"); if (left->is_single_cpu()) { assert(left == dest, "left and dest must be equal"); Register lreg = left->as_register(); if (right->is_single_cpu()) { // cpu register - cpu register Register rreg = right->as_register(); switch (code) { case lir_add: __ addl (lreg, rreg); break; case lir_sub: __ subl (lreg, rreg); break; case lir_mul: __ imull(lreg, rreg); break; default: ShouldNotReachHere(); } } else if (right->is_stack()) { // cpu register - stack Address raddr = frame_map()->address_for_slot(right->single_stack_ix()); switch (code) { case lir_add: __ addl(lreg, raddr); break; case lir_sub: __ subl(lreg, raddr); break; default: ShouldNotReachHere(); } } else if (right->is_constant()) { // cpu register - constant jint c = right->as_constant_ptr()->as_jint(); switch (code) { case lir_add: { __ incrementl(lreg, c); break; } case lir_sub: { __ decrementl(lreg, c); break; } default: ShouldNotReachHere(); } } else { ShouldNotReachHere(); } } else if (left->is_double_cpu()) { assert(left == dest, "left and dest must be equal"); Register lreg_lo = left->as_register_lo(); Register lreg_hi = left->as_register_hi(); if (right->is_double_cpu()) { // cpu register - cpu register Register rreg_lo = right->as_register_lo(); Register rreg_hi = right->as_register_hi(); NOT_LP64(assert_different_registers(lreg_lo, lreg_hi, rreg_lo, rreg_hi)); LP64_ONLY(assert_different_registers(lreg_lo, rreg_lo)); switch (code) { case lir_add: __ addptr(lreg_lo, rreg_lo); NOT_LP64(__ adcl(lreg_hi, rreg_hi)); break; case lir_sub: __ subptr(lreg_lo, rreg_lo); NOT_LP64(__ sbbl(lreg_hi, rreg_hi)); break; case lir_mul: #ifdef _LP64 __ imulq(lreg_lo, rreg_lo); #else assert(lreg_lo == rax && lreg_hi == rdx, "must be"); __ imull(lreg_hi, rreg_lo); __ imull(rreg_hi, lreg_lo); __ addl (rreg_hi, lreg_hi); __ mull (rreg_lo); __ addl (lreg_hi, rreg_hi); #endif // _LP64 break; default: ShouldNotReachHere(); } } else if (right->is_constant()) { // cpu register - constant #ifdef _LP64 jlong c = right->as_constant_ptr()->as_jlong_bits(); __ movptr(r10, (intptr_t) c); switch (code) { case lir_add: __ addptr(lreg_lo, r10); break; case lir_sub: __ subptr(lreg_lo, r10); break; default: ShouldNotReachHere(); } #else jint c_lo = right->as_constant_ptr()->as_jint_lo(); jint c_hi = right->as_constant_ptr()->as_jint_hi(); switch (code) { case lir_add: __ addptr(lreg_lo, c_lo); __ adcl(lreg_hi, c_hi); break; case lir_sub: __ subptr(lreg_lo, c_lo); __ sbbl(lreg_hi, c_hi); break; default: ShouldNotReachHere(); } #endif // _LP64 } else { ShouldNotReachHere(); } } else if (left->is_single_xmm()) { assert(left == dest, "left and dest must be equal"); XMMRegister lreg = left->as_xmm_float_reg(); if (right->is_single_xmm()) { XMMRegister rreg = right->as_xmm_float_reg(); switch (code) { case lir_add: __ addss(lreg, rreg); break; case lir_sub: __ subss(lreg, rreg); break; case lir_mul_strictfp: // fall through case lir_mul: __ mulss(lreg, rreg); break; case lir_div_strictfp: // fall through case lir_div: __ divss(lreg, rreg); break; default: ShouldNotReachHere(); } } else { Address raddr; if (right->is_single_stack()) { raddr = frame_map()->address_for_slot(right->single_stack_ix()); } else if (right->is_constant()) { // hack for now raddr = __ as_Address(InternalAddress(float_constant(right->as_jfloat()))); } else { ShouldNotReachHere(); } switch (code) { case lir_add: __ addss(lreg, raddr); break; case lir_sub: __ subss(lreg, raddr); break; case lir_mul_strictfp: // fall through case lir_mul: __ mulss(lreg, raddr); break; case lir_div_strictfp: // fall through case lir_div: __ divss(lreg, raddr); break; default: ShouldNotReachHere(); } } } else if (left->is_double_xmm()) { assert(left == dest, "left and dest must be equal"); XMMRegister lreg = left->as_xmm_double_reg(); if (right->is_double_xmm()) { XMMRegister rreg = right->as_xmm_double_reg(); switch (code) { case lir_add: __ addsd(lreg, rreg); break; case lir_sub: __ subsd(lreg, rreg); break; case lir_mul_strictfp: // fall through case lir_mul: __ mulsd(lreg, rreg); break; case lir_div_strictfp: // fall through case lir_div: __ divsd(lreg, rreg); break; default: ShouldNotReachHere(); } } else { Address raddr; if (right->is_double_stack()) { raddr = frame_map()->address_for_slot(right->double_stack_ix()); } else if (right->is_constant()) { // hack for now raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble()))); } else { ShouldNotReachHere(); } switch (code) { case lir_add: __ addsd(lreg, raddr); break; case lir_sub: __ subsd(lreg, raddr); break; case lir_mul_strictfp: // fall through case lir_mul: __ mulsd(lreg, raddr); break; case lir_div_strictfp: // fall through case lir_div: __ divsd(lreg, raddr); break; default: ShouldNotReachHere(); } } } else if (left->is_single_fpu()) { assert(dest->is_single_fpu(), "fpu stack allocation required"); if (right->is_single_fpu()) { arith_fpu_implementation(code, left->fpu_regnr(), right->fpu_regnr(), dest->fpu_regnr(), pop_fpu_stack); } else { assert(left->fpu_regnr() == 0, "left must be on TOS"); assert(dest->fpu_regnr() == 0, "dest must be on TOS"); Address raddr; if (right->is_single_stack()) { raddr = frame_map()->address_for_slot(right->single_stack_ix()); } else if (right->is_constant()) { address const_addr = float_constant(right->as_jfloat()); assert(const_addr != NULL, "incorrect float/double constant maintainance"); // hack for now raddr = __ as_Address(InternalAddress(const_addr)); } else { ShouldNotReachHere(); } switch (code) { case lir_add: __ fadd_s(raddr); break; case lir_sub: __ fsub_s(raddr); break; case lir_mul_strictfp: // fall through case lir_mul: __ fmul_s(raddr); break; case lir_div_strictfp: // fall through case lir_div: __ fdiv_s(raddr); break; default: ShouldNotReachHere(); } } } else if (left->is_double_fpu()) { assert(dest->is_double_fpu(), "fpu stack allocation required"); if (code == lir_mul_strictfp || code == lir_div_strictfp) { // Double values require special handling for strictfp mul/div on x86 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1())); __ fmulp(left->fpu_regnrLo() + 1); } if (right->is_double_fpu()) { arith_fpu_implementation(code, left->fpu_regnrLo(), right->fpu_regnrLo(), dest->fpu_regnrLo(), pop_fpu_stack); } else { assert(left->fpu_regnrLo() == 0, "left must be on TOS"); assert(dest->fpu_regnrLo() == 0, "dest must be on TOS"); Address raddr; if (right->is_double_stack()) { raddr = frame_map()->address_for_slot(right->double_stack_ix()); } else if (right->is_constant()) { // hack for now raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble()))); } else { ShouldNotReachHere(); } switch (code) { case lir_add: __ fadd_d(raddr); break; case lir_sub: __ fsub_d(raddr); break; case lir_mul_strictfp: // fall through case lir_mul: __ fmul_d(raddr); break; case lir_div_strictfp: // fall through case lir_div: __ fdiv_d(raddr); break; default: ShouldNotReachHere(); } } if (code == lir_mul_strictfp || code == lir_div_strictfp) { // Double values require special handling for strictfp mul/div on x86 __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2())); __ fmulp(dest->fpu_regnrLo() + 1); } } else if (left->is_single_stack() || left->is_address()) { assert(left == dest, "left and dest must be equal"); Address laddr; if (left->is_single_stack()) { laddr = frame_map()->address_for_slot(left->single_stack_ix()); } else if (left->is_address()) { laddr = as_Address(left->as_address_ptr()); } else { ShouldNotReachHere(); } if (right->is_single_cpu()) { Register rreg = right->as_register(); switch (code) { case lir_add: __ addl(laddr, rreg); break; case lir_sub: __ subl(laddr, rreg); break; default: ShouldNotReachHere(); } } else if (right->is_constant()) { jint c = right->as_constant_ptr()->as_jint(); switch (code) { case lir_add: { __ incrementl(laddr, c); break; } case lir_sub: { __ decrementl(laddr, c); break; } default: ShouldNotReachHere(); } } else { ShouldNotReachHere(); } } else { ShouldNotReachHere(); } } void LIR_Assembler::arith_fpu_implementation(LIR_Code code, int left_index, int right_index, int dest_index, bool pop_fpu_stack) { assert(pop_fpu_stack || (left_index == dest_index || right_index == dest_index), "invalid LIR"); assert(!pop_fpu_stack || (left_index - 1 == dest_index || right_index - 1 == dest_index), "invalid LIR"); assert(left_index == 0 || right_index == 0, "either must be on top of stack"); bool left_is_tos = (left_index == 0); bool dest_is_tos = (dest_index == 0); int non_tos_index = (left_is_tos ? right_index : left_index); switch (code) { case lir_add: if (pop_fpu_stack) __ faddp(non_tos_index); else if (dest_is_tos) __ fadd (non_tos_index); else __ fadda(non_tos_index); break; case lir_sub: if (left_is_tos) { if (pop_fpu_stack) __ fsubrp(non_tos_index); else if (dest_is_tos) __ fsub (non_tos_index); else __ fsubra(non_tos_index); } else { if (pop_fpu_stack) __ fsubp (non_tos_index); else if (dest_is_tos) __ fsubr (non_tos_index); else __ fsuba (non_tos_index); } break; case lir_mul_strictfp: // fall through case lir_mul: if (pop_fpu_stack) __ fmulp(non_tos_index); else if (dest_is_tos) __ fmul (non_tos_index); else __ fmula(non_tos_index); break; case lir_div_strictfp: // fall through case lir_div: if (left_is_tos) { if (pop_fpu_stack) __ fdivrp(non_tos_index); else if (dest_is_tos) __ fdiv (non_tos_index); else __ fdivra(non_tos_index); } else { if (pop_fpu_stack) __ fdivp (non_tos_index); else if (dest_is_tos) __ fdivr (non_tos_index); else __ fdiva (non_tos_index); } break; case lir_rem: assert(left_is_tos && dest_is_tos && right_index == 1, "must be guaranteed by FPU stack allocation"); __ fremr(noreg); break; default: ShouldNotReachHere(); } } void LIR_Assembler::intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr unused, LIR_Opr dest, LIR_Op* op) { if (value->is_double_xmm()) { switch(code) { case lir_abs : { if (dest->as_xmm_double_reg() != value->as_xmm_double_reg()) { __ movdbl(dest->as_xmm_double_reg(), value->as_xmm_double_reg()); } __ andpd(dest->as_xmm_double_reg(), ExternalAddress((address)double_signmask_pool)); } break; case lir_sqrt: __ sqrtsd(dest->as_xmm_double_reg(), value->as_xmm_double_reg()); break; // all other intrinsics are not available in the SSE instruction set, so FPU is used default : ShouldNotReachHere(); } } else if (value->is_double_fpu()) { assert(value->fpu_regnrLo() == 0 && dest->fpu_regnrLo() == 0, "both must be on TOS"); switch(code) { case lir_log : __ flog() ; break; case lir_log10 : __ flog10() ; break; case lir_abs : __ fabs() ; break; case lir_sqrt : __ fsqrt(); break; case lir_sin : // Should consider not saving rbx, if not necessary __ trigfunc('s', op->as_Op2()->fpu_stack_size()); break; case lir_cos : // Should consider not saving rbx, if not necessary assert(op->as_Op2()->fpu_stack_size() <= 6, "sin and cos need two free stack slots"); __ trigfunc('c', op->as_Op2()->fpu_stack_size()); break; case lir_tan : // Should consider not saving rbx, if not necessary __ trigfunc('t', op->as_Op2()->fpu_stack_size()); break; default : ShouldNotReachHere(); } } else { Unimplemented(); } } void LIR_Assembler::logic_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst) { // assert(left->destroys_register(), "check"); if (left->is_single_cpu()) { Register reg = left->as_register(); if (right->is_constant()) { int val = right->as_constant_ptr()->as_jint(); switch (code) { case lir_logic_and: __ andl (reg, val); break; case lir_logic_or: __ orl (reg, val); break; case lir_logic_xor: __ xorl (reg, val); break; default: ShouldNotReachHere(); } } else if (right->is_stack()) { // added support for stack operands Address raddr = frame_map()->address_for_slot(right->single_stack_ix()); switch (code) { case lir_logic_and: __ andl (reg, raddr); break; case lir_logic_or: __ orl (reg, raddr); break; case lir_logic_xor: __ xorl (reg, raddr); break; default: ShouldNotReachHere(); } } else { Register rright = right->as_register(); switch (code) { case lir_logic_and: __ andptr (reg, rright); break; case lir_logic_or : __ orptr (reg, rright); break; case lir_logic_xor: __ xorptr (reg, rright); break; default: ShouldNotReachHere(); } } move_regs(reg, dst->as_register()); } else { Register l_lo = left->as_register_lo(); Register l_hi = left->as_register_hi(); if (right->is_constant()) { #ifdef _LP64 __ mov64(rscratch1, right->as_constant_ptr()->as_jlong()); switch (code) { case lir_logic_and: __ andq(l_lo, rscratch1); break; case lir_logic_or: __ orq(l_lo, rscratch1); break; case lir_logic_xor: __ xorq(l_lo, rscratch1); break; default: ShouldNotReachHere(); } #else int r_lo = right->as_constant_ptr()->as_jint_lo(); int r_hi = right->as_constant_ptr()->as_jint_hi(); switch (code) { case lir_logic_and: __ andl(l_lo, r_lo); __ andl(l_hi, r_hi); break; case lir_logic_or: __ orl(l_lo, r_lo); __ orl(l_hi, r_hi); break; case lir_logic_xor: __ xorl(l_lo, r_lo); __ xorl(l_hi, r_hi); break; default: ShouldNotReachHere(); } #endif // _LP64 } else { #ifdef _LP64 Register r_lo; if (right->type() == T_OBJECT || right->type() == T_ARRAY) { r_lo = right->as_register(); } else { r_lo = right->as_register_lo(); } #else Register r_lo = right->as_register_lo(); Register r_hi = right->as_register_hi(); assert(l_lo != r_hi, "overwriting registers"); #endif switch (code) { case lir_logic_and: __ andptr(l_lo, r_lo); NOT_LP64(__ andptr(l_hi, r_hi);) break; case lir_logic_or: __ orptr(l_lo, r_lo); NOT_LP64(__ orptr(l_hi, r_hi);) break; case lir_logic_xor: __ xorptr(l_lo, r_lo); NOT_LP64(__ xorptr(l_hi, r_hi);) break; default: ShouldNotReachHere(); } } Register dst_lo = dst->as_register_lo(); Register dst_hi = dst->as_register_hi(); #ifdef _LP64 move_regs(l_lo, dst_lo); #else if (dst_lo == l_hi) { assert(dst_hi != l_lo, "overwriting registers"); move_regs(l_hi, dst_hi); move_regs(l_lo, dst_lo); } else { assert(dst_lo != l_hi, "overwriting registers"); move_regs(l_lo, dst_lo); move_regs(l_hi, dst_hi); } #endif // _LP64 } } // we assume that rax, and rdx can be overwritten void LIR_Assembler::arithmetic_idiv(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr temp, LIR_Opr result, CodeEmitInfo* info) { assert(left->is_single_cpu(), "left must be register"); assert(right->is_single_cpu() || right->is_constant(), "right must be register or constant"); assert(result->is_single_cpu(), "result must be register"); // assert(left->destroys_register(), "check"); // assert(right->destroys_register(), "check"); Register lreg = left->as_register(); Register dreg = result->as_register(); if (right->is_constant()) { int divisor = right->as_constant_ptr()->as_jint(); assert(divisor > 0 && is_power_of_2(divisor), "must be"); if (code == lir_idiv) { assert(lreg == rax, "must be rax,"); assert(temp->as_register() == rdx, "tmp register must be rdx"); __ cdql(); // sign extend into rdx:rax if (divisor == 2) { __ subl(lreg, rdx); } else { __ andl(rdx, divisor - 1); __ addl(lreg, rdx); } __ sarl(lreg, log2_intptr(divisor)); move_regs(lreg, dreg); } else if (code == lir_irem) { Label done; __ mov(dreg, lreg); __ andl(dreg, 0x80000000 | (divisor - 1)); __ jcc(Assembler::positive, done); __ decrement(dreg); __ orl(dreg, ~(divisor - 1)); __ increment(dreg); __ bind(done); } else { ShouldNotReachHere(); } } else { Register rreg = right->as_register(); assert(lreg == rax, "left register must be rax,"); assert(rreg != rdx, "right register must not be rdx"); assert(temp->as_register() == rdx, "tmp register must be rdx"); move_regs(lreg, rax); int idivl_offset = __ corrected_idivl(rreg); add_debug_info_for_div0(idivl_offset, info); if (code == lir_irem) { move_regs(rdx, dreg); // result is in rdx } else { move_regs(rax, dreg); } } } void LIR_Assembler::comp_op(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Op2* op) { if (opr1->is_single_cpu()) { Register reg1 = opr1->as_register(); if (opr2->is_single_cpu()) { // cpu register - cpu register if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) { __ cmpptr(reg1, opr2->as_register()); } else { assert(opr2->type() != T_OBJECT && opr2->type() != T_ARRAY, "cmp int, oop?"); __ cmpl(reg1, opr2->as_register()); } } else if (opr2->is_stack()) { // cpu register - stack if (opr1->type() == T_OBJECT || opr1->type() == T_ARRAY) { __ cmpptr(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); } else { __ cmpl(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); } } else if (opr2->is_constant()) { // cpu register - constant LIR_Const* c = opr2->as_constant_ptr(); if (c->type() == T_INT) { __ cmpl(reg1, c->as_jint()); } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) { // In 64bit oops are single register jobject o = c->as_jobject(); if (o == NULL) { __ cmpptr(reg1, (int32_t)NULL_WORD); } else { #ifdef _LP64 __ movoop(rscratch1, o); __ cmpptr(reg1, rscratch1); #else __ cmpoop(reg1, c->as_jobject()); #endif // _LP64 } } else { ShouldNotReachHere(); } // cpu register - address } else if (opr2->is_address()) { if (op->info() != NULL) { add_debug_info_for_null_check_here(op->info()); } __ cmpl(reg1, as_Address(opr2->as_address_ptr())); } else { ShouldNotReachHere(); } } else if(opr1->is_double_cpu()) { Register xlo = opr1->as_register_lo(); Register xhi = opr1->as_register_hi(); if (opr2->is_double_cpu()) { #ifdef _LP64 __ cmpptr(xlo, opr2->as_register_lo()); #else // cpu register - cpu register Register ylo = opr2->as_register_lo(); Register yhi = opr2->as_register_hi(); __ subl(xlo, ylo); __ sbbl(xhi, yhi); if (condition == lir_cond_equal || condition == lir_cond_notEqual) { __ orl(xhi, xlo); } #endif // _LP64 } else if (opr2->is_constant()) { // cpu register - constant 0 assert(opr2->as_jlong() == (jlong)0, "only handles zero"); #ifdef _LP64 __ cmpptr(xlo, (int32_t)opr2->as_jlong()); #else assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "only handles equals case"); __ orl(xhi, xlo); #endif // _LP64 } else { ShouldNotReachHere(); } } else if (opr1->is_single_xmm()) { XMMRegister reg1 = opr1->as_xmm_float_reg(); if (opr2->is_single_xmm()) { // xmm register - xmm register __ ucomiss(reg1, opr2->as_xmm_float_reg()); } else if (opr2->is_stack()) { // xmm register - stack __ ucomiss(reg1, frame_map()->address_for_slot(opr2->single_stack_ix())); } else if (opr2->is_constant()) { // xmm register - constant __ ucomiss(reg1, InternalAddress(float_constant(opr2->as_jfloat()))); } else if (opr2->is_address()) { // xmm register - address if (op->info() != NULL) { add_debug_info_for_null_check_here(op->info()); } __ ucomiss(reg1, as_Address(opr2->as_address_ptr())); } else { ShouldNotReachHere(); } } else if (opr1->is_double_xmm()) { XMMRegister reg1 = opr1->as_xmm_double_reg(); if (opr2->is_double_xmm()) { // xmm register - xmm register __ ucomisd(reg1, opr2->as_xmm_double_reg()); } else if (opr2->is_stack()) { // xmm register - stack __ ucomisd(reg1, frame_map()->address_for_slot(opr2->double_stack_ix())); } else if (opr2->is_constant()) { // xmm register - constant __ ucomisd(reg1, InternalAddress(double_constant(opr2->as_jdouble()))); } else if (opr2->is_address()) { // xmm register - address if (op->info() != NULL) { add_debug_info_for_null_check_here(op->info()); } __ ucomisd(reg1, as_Address(opr2->pointer()->as_address())); } else { ShouldNotReachHere(); } } else if(opr1->is_single_fpu() || opr1->is_double_fpu()) { assert(opr1->is_fpu_register() && opr1->fpu() == 0, "currently left-hand side must be on TOS (relax this restriction)"); assert(opr2->is_fpu_register(), "both must be registers"); __ fcmp(noreg, opr2->fpu(), op->fpu_pop_count() > 0, op->fpu_pop_count() > 1); } else if (opr1->is_address() && opr2->is_constant()) { LIR_Const* c = opr2->as_constant_ptr(); #ifdef _LP64 if (c->type() == T_OBJECT || c->type() == T_ARRAY) { assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "need to reverse"); __ movoop(rscratch1, c->as_jobject()); } #endif // LP64 if (op->info() != NULL) { add_debug_info_for_null_check_here(op->info()); } // special case: address - constant LIR_Address* addr = opr1->as_address_ptr(); if (c->type() == T_INT) { __ cmpl(as_Address(addr), c->as_jint()); } else if (c->type() == T_OBJECT || c->type() == T_ARRAY) { #ifdef _LP64 // %%% Make this explode if addr isn't reachable until we figure out a // better strategy by giving noreg as the temp for as_Address __ cmpptr(rscratch1, as_Address(addr, noreg)); #else __ cmpoop(as_Address(addr), c->as_jobject()); #endif // _LP64 } else { ShouldNotReachHere(); } } else { ShouldNotReachHere(); } } void LIR_Assembler::comp_fl2i(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst, LIR_Op2* op) { if (code == lir_cmp_fd2i || code == lir_ucmp_fd2i) { if (left->is_single_xmm()) { assert(right->is_single_xmm(), "must match"); __ cmpss2int(left->as_xmm_float_reg(), right->as_xmm_float_reg(), dst->as_register(), code == lir_ucmp_fd2i); } else if (left->is_double_xmm()) { assert(right->is_double_xmm(), "must match"); __ cmpsd2int(left->as_xmm_double_reg(), right->as_xmm_double_reg(), dst->as_register(), code == lir_ucmp_fd2i); } else { assert(left->is_single_fpu() || left->is_double_fpu(), "must be"); assert(right->is_single_fpu() || right->is_double_fpu(), "must match"); assert(left->fpu() == 0, "left must be on TOS"); __ fcmp2int(dst->as_register(), code == lir_ucmp_fd2i, right->fpu(), op->fpu_pop_count() > 0, op->fpu_pop_count() > 1); } } else { assert(code == lir_cmp_l2i, "check"); #ifdef _LP64 Label done; Register dest = dst->as_register(); __ cmpptr(left->as_register_lo(), right->as_register_lo()); __ movl(dest, -1); __ jccb(Assembler::less, done); __ set_byte_if_not_zero(dest); __ movzbl(dest, dest); __ bind(done); #else __ lcmp2int(left->as_register_hi(), left->as_register_lo(), right->as_register_hi(), right->as_register_lo()); move_regs(left->as_register_hi(), dst->as_register()); #endif // _LP64 } } void LIR_Assembler::align_call(LIR_Code code) { if (os::is_MP()) { // make sure that the displacement word of the call ends up word aligned int offset = __ offset(); switch (code) { case lir_static_call: case lir_optvirtual_call: case lir_dynamic_call: offset += NativeCall::displacement_offset; break; case lir_icvirtual_call: offset += NativeCall::displacement_offset + NativeMovConstReg::instruction_size; break; case lir_virtual_call: // currently, sparc-specific for niagara default: ShouldNotReachHere(); } while (offset++ % BytesPerWord != 0) { __ nop(); } } } void LIR_Assembler::call(LIR_OpJavaCall* op, relocInfo::relocType rtype) { assert(!os::is_MP() || (__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0, "must be aligned"); __ call(AddressLiteral(op->addr(), rtype)); add_call_info(code_offset(), op->info()); } void LIR_Assembler::ic_call(LIR_OpJavaCall* op) { RelocationHolder rh = virtual_call_Relocation::spec(pc()); __ movoop(IC_Klass, (jobject)Universe::non_oop_word()); assert(!os::is_MP() || (__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0, "must be aligned"); __ call(AddressLiteral(op->addr(), rh)); add_call_info(code_offset(), op->info()); } /* Currently, vtable-dispatch is only enabled for sparc platforms */ void LIR_Assembler::vtable_call(LIR_OpJavaCall* op) { ShouldNotReachHere(); } void LIR_Assembler::emit_static_call_stub() { address call_pc = __ pc(); address stub = __ start_a_stub(call_stub_size); if (stub == NULL) { bailout("static call stub overflow"); return; } int start = __ offset(); if (os::is_MP()) { // make sure that the displacement word of the call ends up word aligned int offset = __ offset() + NativeMovConstReg::instruction_size + NativeCall::displacement_offset; while (offset++ % BytesPerWord != 0) { __ nop(); } } __ relocate(static_stub_Relocation::spec(call_pc)); __ movoop(rbx, (jobject)NULL); // must be set to -1 at code generation time assert(!os::is_MP() || ((__ offset() + 1) % BytesPerWord) == 0, "must be aligned on MP"); // On 64bit this will die since it will take a movq & jmp, must be only a jmp __ jump(RuntimeAddress(__ pc())); assert(__ offset() - start <= call_stub_size, "stub too big"); __ end_a_stub(); } void LIR_Assembler::throw_op(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) { assert(exceptionOop->as_register() == rax, "must match"); assert(exceptionPC->as_register() == rdx, "must match"); // exception object is not added to oop map by LinearScan // (LinearScan assumes that no oops are in fixed registers) info->add_register_oop(exceptionOop); Runtime1::StubID unwind_id; // get current pc information // pc is only needed if the method has an exception handler, the unwind code does not need it. int pc_for_athrow_offset = __ offset(); InternalAddress pc_for_athrow(__ pc()); __ lea(exceptionPC->as_register(), pc_for_athrow); add_call_info(pc_for_athrow_offset, info); // for exception handler __ verify_not_null_oop(rax); // search an exception handler (rax: exception oop, rdx: throwing pc) if (compilation()->has_fpu_code()) { unwind_id = Runtime1::handle_exception_id; } else { unwind_id = Runtime1::handle_exception_nofpu_id; } __ call(RuntimeAddress(Runtime1::entry_for(unwind_id))); // enough room for two byte trap __ nop(); } void LIR_Assembler::unwind_op(LIR_Opr exceptionOop) { assert(exceptionOop->as_register() == rax, "must match"); __ jmp(_unwind_handler_entry); } void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp) { // optimized version for linear scan: // * count must be already in ECX (guaranteed by LinearScan) // * left and dest must be equal // * tmp must be unused assert(count->as_register() == SHIFT_count, "count must be in ECX"); assert(left == dest, "left and dest must be equal"); assert(tmp->is_illegal(), "wasting a register if tmp is allocated"); if (left->is_single_cpu()) { Register value = left->as_register(); assert(value != SHIFT_count, "left cannot be ECX"); switch (code) { case lir_shl: __ shll(value); break; case lir_shr: __ sarl(value); break; case lir_ushr: __ shrl(value); break; default: ShouldNotReachHere(); } } else if (left->is_double_cpu()) { Register lo = left->as_register_lo(); Register hi = left->as_register_hi(); assert(lo != SHIFT_count && hi != SHIFT_count, "left cannot be ECX"); #ifdef _LP64 switch (code) { case lir_shl: __ shlptr(lo); break; case lir_shr: __ sarptr(lo); break; case lir_ushr: __ shrptr(lo); break; default: ShouldNotReachHere(); } #else switch (code) { case lir_shl: __ lshl(hi, lo); break; case lir_shr: __ lshr(hi, lo, true); break; case lir_ushr: __ lshr(hi, lo, false); break; default: ShouldNotReachHere(); } #endif // LP64 } else { ShouldNotReachHere(); } } void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, jint count, LIR_Opr dest) { if (dest->is_single_cpu()) { // first move left into dest so that left is not destroyed by the shift Register value = dest->as_register(); count = count & 0x1F; // Java spec move_regs(left->as_register(), value); switch (code) { case lir_shl: __ shll(value, count); break; case lir_shr: __ sarl(value, count); break; case lir_ushr: __ shrl(value, count); break; default: ShouldNotReachHere(); } } else if (dest->is_double_cpu()) { #ifndef _LP64 Unimplemented(); #else // first move left into dest so that left is not destroyed by the shift Register value = dest->as_register_lo(); count = count & 0x1F; // Java spec move_regs(left->as_register_lo(), value); switch (code) { case lir_shl: __ shlptr(value, count); break; case lir_shr: __ sarptr(value, count); break; case lir_ushr: __ shrptr(value, count); break; default: ShouldNotReachHere(); } #endif // _LP64 } else { ShouldNotReachHere(); } } void LIR_Assembler::store_parameter(Register r, int offset_from_rsp_in_words) { assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); __ movptr (Address(rsp, offset_from_rsp_in_bytes), r); } void LIR_Assembler::store_parameter(jint c, int offset_from_rsp_in_words) { assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); __ movptr (Address(rsp, offset_from_rsp_in_bytes), c); } void LIR_Assembler::store_parameter(jobject o, int offset_from_rsp_in_words) { assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp"); int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord; assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset"); __ movoop (Address(rsp, offset_from_rsp_in_bytes), o); } // This code replaces a call to arraycopy; no exception may // be thrown in this code, they must be thrown in the System.arraycopy // activation frame; we could save some checks if this would not be the case void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) { ciArrayKlass* default_type = op->expected_type(); Register src = op->src()->as_register(); Register dst = op->dst()->as_register(); Register src_pos = op->src_pos()->as_register(); Register dst_pos = op->dst_pos()->as_register(); Register length = op->length()->as_register(); Register tmp = op->tmp()->as_register(); CodeStub* stub = op->stub(); int flags = op->flags(); BasicType basic_type = default_type != NULL ? default_type->element_type()->basic_type() : T_ILLEGAL; if (basic_type == T_ARRAY) basic_type = T_OBJECT; // if we don't know anything or it's an object array, just go through the generic arraycopy if (default_type == NULL) { Label done; // save outgoing arguments on stack in case call to System.arraycopy is needed // HACK ALERT. This code used to push the parameters in a hardwired fashion // for interpreter calling conventions. Now we have to do it in new style conventions. // For the moment until C1 gets the new register allocator I just force all the // args to the right place (except the register args) and then on the back side // reload the register args properly if we go slow path. Yuck // These are proper for the calling convention store_parameter(length, 2); store_parameter(dst_pos, 1); store_parameter(dst, 0); // these are just temporary placements until we need to reload store_parameter(src_pos, 3); store_parameter(src, 4); NOT_LP64(assert(src == rcx && src_pos == rdx, "mismatch in calling convention");) address entry = CAST_FROM_FN_PTR(address, Runtime1::arraycopy); // pass arguments: may push as this is not a safepoint; SP must be fix at each safepoint #ifdef _LP64 // The arguments are in java calling convention so we can trivially shift them to C // convention assert_different_registers(c_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4); __ mov(c_rarg0, j_rarg0); assert_different_registers(c_rarg1, j_rarg2, j_rarg3, j_rarg4); __ mov(c_rarg1, j_rarg1); assert_different_registers(c_rarg2, j_rarg3, j_rarg4); __ mov(c_rarg2, j_rarg2); assert_different_registers(c_rarg3, j_rarg4); __ mov(c_rarg3, j_rarg3); #ifdef _WIN64 // Allocate abi space for args but be sure to keep stack aligned __ subptr(rsp, 6*wordSize); store_parameter(j_rarg4, 4); __ call(RuntimeAddress(entry)); __ addptr(rsp, 6*wordSize); #else __ mov(c_rarg4, j_rarg4); __ call(RuntimeAddress(entry)); #endif // _WIN64 #else __ push(length); __ push(dst_pos); __ push(dst); __ push(src_pos); __ push(src); __ call_VM_leaf(entry, 5); // removes pushed parameter from the stack #endif // _LP64 __ cmpl(rax, 0); __ jcc(Assembler::equal, *stub->continuation()); // Reload values from the stack so they are where the stub // expects them. __ movptr (dst, Address(rsp, 0*BytesPerWord)); __ movptr (dst_pos, Address(rsp, 1*BytesPerWord)); __ movptr (length, Address(rsp, 2*BytesPerWord)); __ movptr (src_pos, Address(rsp, 3*BytesPerWord)); __ movptr (src, Address(rsp, 4*BytesPerWord)); __ jmp(*stub->entry()); __ bind(*stub->continuation()); return; } assert(default_type != NULL && default_type->is_array_klass() && default_type->is_loaded(), "must be true at this point"); int elem_size = type2aelembytes(basic_type); int shift_amount; Address::ScaleFactor scale; switch (elem_size) { case 1 : shift_amount = 0; scale = Address::times_1; break; case 2 : shift_amount = 1; scale = Address::times_2; break; case 4 : shift_amount = 2; scale = Address::times_4; break; case 8 : shift_amount = 3; scale = Address::times_8; break; default: ShouldNotReachHere(); } Address src_length_addr = Address(src, arrayOopDesc::length_offset_in_bytes()); Address dst_length_addr = Address(dst, arrayOopDesc::length_offset_in_bytes()); Address src_klass_addr = Address(src, oopDesc::klass_offset_in_bytes()); Address dst_klass_addr = Address(dst, oopDesc::klass_offset_in_bytes()); // length and pos's are all sign extended at this point on 64bit // test for NULL if (flags & LIR_OpArrayCopy::src_null_check) { __ testptr(src, src); __ jcc(Assembler::zero, *stub->entry()); } if (flags & LIR_OpArrayCopy::dst_null_check) { __ testptr(dst, dst); __ jcc(Assembler::zero, *stub->entry()); } // check if negative if (flags & LIR_OpArrayCopy::src_pos_positive_check) { __ testl(src_pos, src_pos); __ jcc(Assembler::less, *stub->entry()); } if (flags & LIR_OpArrayCopy::dst_pos_positive_check) { __ testl(dst_pos, dst_pos); __ jcc(Assembler::less, *stub->entry()); } if (flags & LIR_OpArrayCopy::length_positive_check) { __ testl(length, length); __ jcc(Assembler::less, *stub->entry()); } if (flags & LIR_OpArrayCopy::src_range_check) { __ lea(tmp, Address(src_pos, length, Address::times_1, 0)); __ cmpl(tmp, src_length_addr); __ jcc(Assembler::above, *stub->entry()); } if (flags & LIR_OpArrayCopy::dst_range_check) { __ lea(tmp, Address(dst_pos, length, Address::times_1, 0)); __ cmpl(tmp, dst_length_addr); __ jcc(Assembler::above, *stub->entry()); } if (flags & LIR_OpArrayCopy::type_check) { if (UseCompressedOops) { __ movl(tmp, src_klass_addr); __ cmpl(tmp, dst_klass_addr); } else { __ movptr(tmp, src_klass_addr); __ cmpptr(tmp, dst_klass_addr); } __ jcc(Assembler::notEqual, *stub->entry()); } #ifdef ASSERT if (basic_type != T_OBJECT || !(flags & LIR_OpArrayCopy::type_check)) { // Sanity check the known type with the incoming class. For the // primitive case the types must match exactly with src.klass and // dst.klass each exactly matching the default type. For the // object array case, if no type check is needed then either the // dst type is exactly the expected type and the src type is a // subtype which we can't check or src is the same array as dst // but not necessarily exactly of type default_type. Label known_ok, halt; __ movoop(tmp, default_type->constant_encoding()); #ifdef _LP64 if (UseCompressedOops) { __ encode_heap_oop(tmp); } #endif if (basic_type != T_OBJECT) { if (UseCompressedOops) __ cmpl(tmp, dst_klass_addr); else __ cmpptr(tmp, dst_klass_addr); __ jcc(Assembler::notEqual, halt); if (UseCompressedOops) __ cmpl(tmp, src_klass_addr); else __ cmpptr(tmp, src_klass_addr); __ jcc(Assembler::equal, known_ok); } else { if (UseCompressedOops) __ cmpl(tmp, dst_klass_addr); else __ cmpptr(tmp, dst_klass_addr); __ jcc(Assembler::equal, known_ok); __ cmpptr(src, dst); __ jcc(Assembler::equal, known_ok); } __ bind(halt); __ stop("incorrect type information in arraycopy"); __ bind(known_ok); } #endif if (shift_amount > 0 && basic_type != T_OBJECT) { __ shlptr(length, shift_amount); } #ifdef _LP64 assert_different_registers(c_rarg0, dst, dst_pos, length); __ movl2ptr(src_pos, src_pos); //higher 32bits must be null __ lea(c_rarg0, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); assert_different_registers(c_rarg1, length); __ movl2ptr(dst_pos, dst_pos); //higher 32bits must be null __ lea(c_rarg1, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); __ mov(c_rarg2, length); #else __ lea(tmp, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); store_parameter(tmp, 0); __ lea(tmp, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); store_parameter(tmp, 1); store_parameter(length, 2); #endif // _LP64 if (basic_type == T_OBJECT) { __ call_VM_leaf(CAST_FROM_FN_PTR(address, Runtime1::oop_arraycopy), 0); } else { __ call_VM_leaf(CAST_FROM_FN_PTR(address, Runtime1::primitive_arraycopy), 0); } __ bind(*stub->continuation()); } void LIR_Assembler::emit_lock(LIR_OpLock* op) { Register obj = op->obj_opr()->as_register(); // may not be an oop Register hdr = op->hdr_opr()->as_register(); Register lock = op->lock_opr()->as_register(); if (!UseFastLocking) { __ jmp(*op->stub()->entry()); } else if (op->code() == lir_lock) { Register scratch = noreg; if (UseBiasedLocking) { scratch = op->scratch_opr()->as_register(); } assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); // add debug info for NullPointerException only if one is possible int null_check_offset = __ lock_object(hdr, obj, lock, scratch, *op->stub()->entry()); if (op->info() != NULL) { add_debug_info_for_null_check(null_check_offset, op->info()); } // done } else if (op->code() == lir_unlock) { assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header"); __ unlock_object(hdr, obj, lock, *op->stub()->entry()); } else { Unimplemented(); } __ bind(*op->stub()->continuation()); } void LIR_Assembler::emit_profile_call(LIR_OpProfileCall* op) { ciMethod* method = op->profiled_method(); int bci = op->profiled_bci(); // Update counter for all call types ciMethodData* md = method->method_data_or_null(); assert(md != NULL, "Sanity"); ciProfileData* data = md->bci_to_data(bci); assert(data->is_CounterData(), "need CounterData for calls"); assert(op->mdo()->is_single_cpu(), "mdo must be allocated"); Register mdo = op->mdo()->as_register(); __ movoop(mdo, md->constant_encoding()); Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset())); Bytecodes::Code bc = method->java_code_at_bci(bci); // Perform additional virtual call profiling for invokevirtual and // invokeinterface bytecodes if ((bc == Bytecodes::_invokevirtual || bc == Bytecodes::_invokeinterface) && C1ProfileVirtualCalls) { assert(op->recv()->is_single_cpu(), "recv must be allocated"); Register recv = op->recv()->as_register(); assert_different_registers(mdo, recv); assert(data->is_VirtualCallData(), "need VirtualCallData for virtual calls"); ciKlass* known_klass = op->known_holder(); if (C1OptimizeVirtualCallProfiling && known_klass != NULL) { // We know the type that will be seen at this call site; we can // statically update the methodDataOop rather than needing to do // dynamic tests on the receiver type // NOTE: we should probably put a lock around this search to // avoid collisions by concurrent compilations ciVirtualCallData* vc_data = (ciVirtualCallData*) data; uint i; for (i = 0; i < VirtualCallData::row_limit(); i++) { ciKlass* receiver = vc_data->receiver(i); if (known_klass->equals(receiver)) { Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))); __ addptr(data_addr, DataLayout::counter_increment); return; } } // Receiver type not found in profile data; select an empty slot // Note that this is less efficient than it should be because it // always does a write to the receiver part of the // VirtualCallData rather than just the first time for (i = 0; i < VirtualCallData::row_limit(); i++) { ciKlass* receiver = vc_data->receiver(i); if (receiver == NULL) { Address recv_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i))); __ movoop(recv_addr, known_klass->constant_encoding()); Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i))); __ addptr(data_addr, DataLayout::counter_increment); return; } } } else { __ load_klass(recv, recv); Label update_done; type_profile_helper(mdo, md, data, recv, &update_done); // Receiver did not match any saved receiver and there is no empty row for it. // Increment total counter to indicate polymorphic case. __ addptr(counter_addr, DataLayout::counter_increment); __ bind(update_done); } } else { // Static call __ addptr(counter_addr, DataLayout::counter_increment); } } void LIR_Assembler::emit_delay(LIR_OpDelay*) { Unimplemented(); } void LIR_Assembler::monitor_address(int monitor_no, LIR_Opr dst) { __ lea(dst->as_register(), frame_map()->address_for_monitor_lock(monitor_no)); } void LIR_Assembler::align_backward_branch_target() { __ align(BytesPerWord); } void LIR_Assembler::negate(LIR_Opr left, LIR_Opr dest) { if (left->is_single_cpu()) { __ negl(left->as_register()); move_regs(left->as_register(), dest->as_register()); } else if (left->is_double_cpu()) { Register lo = left->as_register_lo(); #ifdef _LP64 Register dst = dest->as_register_lo(); __ movptr(dst, lo); __ negptr(dst); #else Register hi = left->as_register_hi(); __ lneg(hi, lo); if (dest->as_register_lo() == hi) { assert(dest->as_register_hi() != lo, "destroying register"); move_regs(hi, dest->as_register_hi()); move_regs(lo, dest->as_register_lo()); } else { move_regs(lo, dest->as_register_lo()); move_regs(hi, dest->as_register_hi()); } #endif // _LP64 } else if (dest->is_single_xmm()) { if (left->as_xmm_float_reg() != dest->as_xmm_float_reg()) { __ movflt(dest->as_xmm_float_reg(), left->as_xmm_float_reg()); } __ xorps(dest->as_xmm_float_reg(), ExternalAddress((address)float_signflip_pool)); } else if (dest->is_double_xmm()) { if (left->as_xmm_double_reg() != dest->as_xmm_double_reg()) { __ movdbl(dest->as_xmm_double_reg(), left->as_xmm_double_reg()); } __ xorpd(dest->as_xmm_double_reg(), ExternalAddress((address)double_signflip_pool)); } else if (left->is_single_fpu() || left->is_double_fpu()) { assert(left->fpu() == 0, "arg must be on TOS"); assert(dest->fpu() == 0, "dest must be TOS"); __ fchs(); } else { ShouldNotReachHere(); } } void LIR_Assembler::leal(LIR_Opr addr, LIR_Opr dest) { assert(addr->is_address() && dest->is_register(), "check"); Register reg; reg = dest->as_pointer_register(); __ lea(reg, as_Address(addr->as_address_ptr())); } void LIR_Assembler::rt_call(LIR_Opr result, address dest, const LIR_OprList* args, LIR_Opr tmp, CodeEmitInfo* info) { assert(!tmp->is_valid(), "don't need temporary"); __ call(RuntimeAddress(dest)); if (info != NULL) { add_call_info_here(info); } } void LIR_Assembler::volatile_move_op(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info) { assert(type == T_LONG, "only for volatile long fields"); if (info != NULL) { add_debug_info_for_null_check_here(info); } if (src->is_double_xmm()) { if (dest->is_double_cpu()) { #ifdef _LP64 __ movdq(dest->as_register_lo(), src->as_xmm_double_reg()); #else __ movdl(dest->as_register_lo(), src->as_xmm_double_reg()); __ psrlq(src->as_xmm_double_reg(), 32); __ movdl(dest->as_register_hi(), src->as_xmm_double_reg()); #endif // _LP64 } else if (dest->is_double_stack()) { __ movdbl(frame_map()->address_for_slot(dest->double_stack_ix()), src->as_xmm_double_reg()); } else if (dest->is_address()) { __ movdbl(as_Address(dest->as_address_ptr()), src->as_xmm_double_reg()); } else { ShouldNotReachHere(); } } else if (dest->is_double_xmm()) { if (src->is_double_stack()) { __ movdbl(dest->as_xmm_double_reg(), frame_map()->address_for_slot(src->double_stack_ix())); } else if (src->is_address()) { __ movdbl(dest->as_xmm_double_reg(), as_Address(src->as_address_ptr())); } else { ShouldNotReachHere(); } } else if (src->is_double_fpu()) { assert(src->fpu_regnrLo() == 0, "must be TOS"); if (dest->is_double_stack()) { __ fistp_d(frame_map()->address_for_slot(dest->double_stack_ix())); } else if (dest->is_address()) { __ fistp_d(as_Address(dest->as_address_ptr())); } else { ShouldNotReachHere(); } } else if (dest->is_double_fpu()) { assert(dest->fpu_regnrLo() == 0, "must be TOS"); if (src->is_double_stack()) { __ fild_d(frame_map()->address_for_slot(src->double_stack_ix())); } else if (src->is_address()) { __ fild_d(as_Address(src->as_address_ptr())); } else { ShouldNotReachHere(); } } else { ShouldNotReachHere(); } } void LIR_Assembler::membar() { // QQQ sparc TSO uses this, __ membar( Assembler::Membar_mask_bits(Assembler::StoreLoad)); } void LIR_Assembler::membar_acquire() { // No x86 machines currently require load fences // __ load_fence(); } void LIR_Assembler::membar_release() { // No x86 machines currently require store fences // __ store_fence(); } void LIR_Assembler::get_thread(LIR_Opr result_reg) { assert(result_reg->is_register(), "check"); #ifdef _LP64 // __ get_thread(result_reg->as_register_lo()); __ mov(result_reg->as_register(), r15_thread); #else __ get_thread(result_reg->as_register()); #endif // _LP64 } void LIR_Assembler::peephole(LIR_List*) { // do nothing for now } #undef __