| /* |
| * Copyright (c) 2000, 2015, 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 "asm/macroAssembler.hpp" |
| #include "asm/macroAssembler.inline.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/shared/barrierSet.hpp" |
| #include "gc/shared/cardTableModRefBS.hpp" |
| #include "gc/shared/collectedHeap.hpp" |
| #include "nativeInst_x86.hpp" |
| #include "oops/objArrayKlass.hpp" |
| #include "runtime/sharedRuntime.hpp" |
| #include "vmreg_x86.inline.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*)(((intptr_t)adr) & ((intptr_t)(~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], (jlong)UCONST64(0x8000000080000000), (jlong)UCONST64(0x8000000080000000)); |
| static jlong *double_signflip_pool = double_quadword(&fp_signmask_pool[4*2], (jlong)UCONST64(0x8000000000000000), (jlong)UCONST64(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::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(), bang_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 || UseCompressedClassPointers; |
| if (!do_post_padding) { |
| // insert some nops so that the verified entry point is aligned on CodeEntryAlignment |
| __ align(CodeEntryAlignment, __ offset() + ic_cmp_size); |
| } |
| 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, patching_id(info)); |
| __ movoop(reg, o); |
| patching_epilog(patch, lir_patch_normal, reg, info); |
| } |
| |
| void LIR_Assembler::klass2reg_with_patching(Register reg, CodeEmitInfo* info) { |
| Metadata* o = NULL; |
| PatchingStub* patch = new PatchingStub(_masm, PatchingStub::load_klass_id); |
| __ mov_metadata(reg, o); |
| patching_epilog(patch, lir_patch_normal, reg, info); |
| } |
| |
| // This specifies the rsp decrement needed to build the frame |
| int LIR_Assembler::initial_frame_size_in_bytes() const { |
| // 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_from_callee_id))); |
| __ should_not_reach_here(); |
| guarantee(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 |
| Register thread = NOT_LP64(rsi) LP64_ONLY(r15_thread); |
| NOT_LP64(__ get_thread(rsi)); |
| __ movptr(rax, Address(thread, JavaThread::exception_oop_offset())); |
| __ movptr(Address(thread, JavaThread::exception_oop_offset()), (intptr_t)NULL_WORD); |
| __ movptr(Address(thread, JavaThread::exception_pc_offset()), (intptr_t)NULL_WORD); |
| |
| __ bind(_unwind_handler_entry); |
| __ verify_not_null_oop(rax); |
| if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) { |
| __ mov(rbx, rax); // Preserve the exception (rbx is always callee-saved) |
| } |
| |
| // 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, rsi, rax, *stub->entry()); |
| __ bind(*stub->continuation()); |
| } |
| |
| if (compilation()->env()->dtrace_method_probes()) { |
| #ifdef _LP64 |
| __ mov(rdi, r15_thread); |
| __ mov_metadata(rsi, method()->constant_encoding()); |
| #else |
| __ get_thread(rax); |
| __ movptr(Address(rsp, 0), rax); |
| __ mov_metadata(Address(rsp, sizeof(void*)), method()->constant_encoding()); |
| #endif |
| __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit))); |
| } |
| |
| if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) { |
| __ mov(rax, rbx); // 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())); |
| guarantee(code_offset() - offset <= deopt_handler_size, "overflow"); |
| __ end_a_stub(); |
| |
| return offset; |
| } |
| |
| |
| 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()); |
| |
| if (StackReservedPages > 0 && compilation()->has_reserved_stack_access()) { |
| __ reserved_stack_check(); |
| } |
| |
| 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(), relocInfo::poll_return_type); |
| |
| if (Assembler::is_polling_page_far()) { |
| __ lea(rscratch1, polling_page); |
| __ relocate(relocInfo::poll_return_type); |
| __ testl(rax, Address(rscratch1, 0)); |
| } else { |
| __ testl(rax, polling_page); |
| } |
| __ ret(0); |
| } |
| |
| |
| int LIR_Assembler::safepoint_poll(LIR_Opr tmp, CodeEmitInfo* info) { |
| AddressLiteral polling_page(os::get_polling_page(), relocInfo::poll_type); |
| guarantee(info != NULL, "Shouldn't be NULL"); |
| int offset = __ offset(); |
| if (Assembler::is_polling_page_far()) { |
| __ lea(rscratch1, polling_page); |
| offset = __ offset(); |
| add_debug_info_for_branch(info); |
| __ relocate(relocInfo::poll_type); |
| __ testl(rax, Address(rscratch1, 0)); |
| } else { |
| add_debug_info_for_branch(info); |
| __ testl(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_METADATA: { |
| if (patch_code != lir_patch_none) { |
| klass2reg_with_patching(dest->as_register(), info); |
| } else { |
| __ mov_metadata(dest->as_register(), c->as_metadata()); |
| } |
| 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 { |
| #ifdef _LP64 |
| __ xorptr(rscratch1, rscratch1); |
| null_check_here = code_offset(); |
| __ movptr(as_Address(addr), rscratch1); |
| #else |
| __ movptr(as_Address(addr), NULL_WORD); |
| #endif |
| } |
| } 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 if (type == T_METADATA) { |
| __ 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); |
| if (patch_code != lir_patch_none) { |
| info->oop_map()->set_narrowoop(compressed_src->as_VMReg()); |
| } |
| } |
| #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_METADATA: |
| // We get here to store a method pointer to the stack to pass to |
| // a dtrace runtime call. This can't work on 64 bit with |
| // compressed klass ptrs: T_METADATA can be a compressed klass |
| // ptr or a 64 bit method pointer. |
| LP64_ONLY(ShouldNotReachHere()); |
| __ 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 if (type == T_METADATA) { |
| __ movptr(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix())); |
| } 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); |
| |
| if (addr->base()->type() == T_OBJECT) { |
| __ verify_oop(addr->base()->as_pointer_register()); |
| } |
| |
| 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: |
| if (UseCompressedClassPointers && addr->disp() == oopDesc::klass_offset_in_bytes()) { |
| __ movl(dest->as_register(), from_addr); |
| } else { |
| __ 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()); |
| } else if (type == T_ADDRESS && addr->disp() == oopDesc::klass_offset_in_bytes()) { |
| #ifdef _LP64 |
| if (UseCompressedClassPointers) { |
| __ decode_klass_not_null(dest->as_register()); |
| } |
| #endif |
| } |
| } |
| |
| |
| 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: |
| #ifdef _LP64 |
| __ movl(dest->as_register(), src->as_register_lo()); |
| #else |
| move_regs(src->as_register_lo(), dest->as_register()); |
| #endif |
| 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()) { |
| __ cmpb(Address(op->klass()->as_register(), |
| InstanceKlass::init_state_offset()), |
| 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) { |
| Register len = op->len()->as_register(); |
| LP64_ONLY( __ movslq(len, len); ) |
| |
| 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 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 = NULL; |
| ciProfileData* data = NULL; |
| |
| 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() && !UseCompressedClassPointers) { |
| 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); |
| |
| __ 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; |
| __ mov_metadata(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); |
| } |
| |
| if (!k->is_loaded()) { |
| klass2reg_with_patching(k_RInfo, op->info_for_patch()); |
| } else { |
| #ifdef _LP64 |
| __ mov_metadata(k_RInfo, k->constant_encoding()); |
| #endif // _LP64 |
| } |
| __ verify_oop(obj); |
| |
| if (op->fast_check()) { |
| // get object class |
| // not a safepoint as obj null check happens earlier |
| #ifdef _LP64 |
| if (UseCompressedClassPointers) { |
| __ load_klass(Rtmp1, obj); |
| __ cmpptr(k_RInfo, Rtmp1); |
| } else { |
| __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes())); |
| } |
| #else |
| if (k->is_loaded()) { |
| __ cmpklass(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 |
| __ cmpklass(Address(klass_RInfo, k->super_check_offset()), k->constant_encoding()); |
| #endif // _LP64 |
| if ((juint)in_bytes(Klass::secondary_super_cache_offset()) != 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 |
| __ cmpklass(klass_RInfo, k->constant_encoding()); |
| #endif // _LP64 |
| __ jcc(Assembler::equal, *success_target); |
| |
| __ push(klass_RInfo); |
| #ifdef _LP64 |
| __ push(k_RInfo); |
| #else |
| __ pushklass(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); |
| __ mov_metadata(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); |
| __ mov_metadata(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 = NULL; |
| ciProfileData* data = NULL; |
| |
| 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; |
| __ mov_metadata(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())); |
| // 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); |
| __ mov_metadata(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); |
| __ mov_metadata(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) { |
| __ encode_heap_oop(cmpval); |
| __ mov(rscratch1, newval); |
| __ encode_heap_oop(rscratch1); |
| if (os::is_MP()) { |
| __ lock(); |
| } |
| // cmpval (rax) is implicitly used by this instruction |
| __ cmpxchgl(rscratch1, Address(addr, 0)); |
| } 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, BasicType type) { |
| 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: acond = Assembler::equal; ncond = Assembler::notEqual; |
| 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_log10 : __ flog10() ; break; |
| case lir_abs : __ fabs() ; break; |
| case lir_sqrt : __ fsqrt(); 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 { |
| fatal("unexpected type: %s", basictype_to_str(c->type())); |
| } |
| // 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(); |
| } |
| __ align(BytesPerWord, offset); |
| } |
| } |
| |
| |
| 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) { |
| __ ic_call(op->addr()); |
| add_call_info(code_offset(), op->info()); |
| assert(!os::is_MP() || |
| (__ offset() - NativeCall::instruction_size + NativeCall::displacement_offset) % BytesPerWord == 0, |
| "must be aligned"); |
| } |
| |
| |
| /* 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 |
| __ align(BytesPerWord, __ offset() + NativeMovConstReg::instruction_size + NativeCall::displacement_offset); |
| } |
| __ relocate(static_stub_Relocation::spec(call_pc)); |
| __ mov_metadata(rbx, (Metadata*)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); |
| } |
| |
| |
| void LIR_Assembler::store_parameter(Metadata* m, 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"); |
| __ mov_metadata(Address(rsp, offset_from_rsp_in_bytes), m); |
| } |
| |
| |
| // 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, 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 C_entry = CAST_FROM_FN_PTR(address, Runtime1::arraycopy); |
| |
| address copyfunc_addr = StubRoutines::generic_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); |
| if (copyfunc_addr == NULL) { // Use C version if stub was not generated |
| __ call(RuntimeAddress(C_entry)); |
| } else { |
| #ifndef PRODUCT |
| if (PrintC1Statistics) { |
| __ incrementl(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt)); |
| } |
| #endif |
| __ call(RuntimeAddress(copyfunc_addr)); |
| } |
| __ addptr(rsp, 6*wordSize); |
| #else |
| __ mov(c_rarg4, j_rarg4); |
| if (copyfunc_addr == NULL) { // Use C version if stub was not generated |
| __ call(RuntimeAddress(C_entry)); |
| } else { |
| #ifndef PRODUCT |
| if (PrintC1Statistics) { |
| __ incrementl(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt)); |
| } |
| #endif |
| __ call(RuntimeAddress(copyfunc_addr)); |
| } |
| #endif // _WIN64 |
| #else |
| __ push(length); |
| __ push(dst_pos); |
| __ push(dst); |
| __ push(src_pos); |
| __ push(src); |
| |
| if (copyfunc_addr == NULL) { // Use C version if stub was not generated |
| __ call_VM_leaf(C_entry, 5); // removes pushed parameter from the stack |
| } else { |
| #ifndef PRODUCT |
| if (PrintC1Statistics) { |
| __ incrementl(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt)); |
| } |
| #endif |
| __ call_VM_leaf(copyfunc_addr, 5); // removes pushed parameter from the stack |
| } |
| |
| #endif // _LP64 |
| |
| __ cmpl(rax, 0); |
| __ jcc(Assembler::equal, *stub->continuation()); |
| |
| if (copyfunc_addr != NULL) { |
| __ mov(tmp, rax); |
| __ xorl(tmp, -1); |
| } |
| |
| // 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)); |
| |
| if (copyfunc_addr != NULL) { |
| __ subl(length, tmp); |
| __ addl(src_pos, tmp); |
| __ addl(dst_pos, tmp); |
| } |
| __ 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); |
| Address::ScaleFactor scale; |
| |
| switch (elem_size) { |
| case 1 : |
| scale = Address::times_1; |
| break; |
| case 2 : |
| scale = Address::times_2; |
| break; |
| case 4 : |
| scale = Address::times_4; |
| break; |
| case 8 : |
| scale = Address::times_8; |
| break; |
| default: |
| scale = Address::no_scale; |
| 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::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::length_positive_check) { |
| __ testl(length, length); |
| __ jcc(Assembler::less, *stub->entry()); |
| __ jcc(Assembler::zero, *stub->continuation()); |
| } |
| |
| #ifdef _LP64 |
| __ movl2ptr(src_pos, src_pos); //higher 32bits must be null |
| __ movl2ptr(dst_pos, dst_pos); //higher 32bits must be null |
| #endif |
| |
| if (flags & LIR_OpArrayCopy::type_check) { |
| // We don't know the array types are compatible |
| if (basic_type != T_OBJECT) { |
| // Simple test for basic type arrays |
| if (UseCompressedClassPointers) { |
| __ 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()); |
| } else { |
| // For object arrays, if src is a sub class of dst then we can |
| // safely do the copy. |
| Label cont, slow; |
| |
| __ push(src); |
| __ push(dst); |
| |
| __ load_klass(src, src); |
| __ load_klass(dst, dst); |
| |
| __ check_klass_subtype_fast_path(src, dst, tmp, &cont, &slow, NULL); |
| |
| __ push(src); |
| __ push(dst); |
| __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id))); |
| __ pop(dst); |
| __ pop(src); |
| |
| __ cmpl(src, 0); |
| __ jcc(Assembler::notEqual, cont); |
| |
| __ bind(slow); |
| __ pop(dst); |
| __ pop(src); |
| |
| address copyfunc_addr = StubRoutines::checkcast_arraycopy(); |
| if (copyfunc_addr != NULL) { // use stub if available |
| // src is not a sub class of dst so we have to do a |
| // per-element check. |
| |
| int mask = LIR_OpArrayCopy::src_objarray|LIR_OpArrayCopy::dst_objarray; |
| if ((flags & mask) != mask) { |
| // Check that at least both of them object arrays. |
| assert(flags & mask, "one of the two should be known to be an object array"); |
| |
| if (!(flags & LIR_OpArrayCopy::src_objarray)) { |
| __ load_klass(tmp, src); |
| } else if (!(flags & LIR_OpArrayCopy::dst_objarray)) { |
| __ load_klass(tmp, dst); |
| } |
| int lh_offset = in_bytes(Klass::layout_helper_offset()); |
| Address klass_lh_addr(tmp, lh_offset); |
| jint objArray_lh = Klass::array_layout_helper(T_OBJECT); |
| __ cmpl(klass_lh_addr, objArray_lh); |
| __ jcc(Assembler::notEqual, *stub->entry()); |
| } |
| |
| // Spill because stubs can use any register they like and it's |
| // easier to restore just those that we care about. |
| store_parameter(dst, 0); |
| store_parameter(dst_pos, 1); |
| store_parameter(length, 2); |
| store_parameter(src_pos, 3); |
| store_parameter(src, 4); |
| |
| #ifndef _LP64 |
| __ movptr(tmp, dst_klass_addr); |
| __ movptr(tmp, Address(tmp, ObjArrayKlass::element_klass_offset())); |
| __ push(tmp); |
| __ movl(tmp, Address(tmp, Klass::super_check_offset_offset())); |
| __ push(tmp); |
| __ push(length); |
| __ lea(tmp, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); |
| __ push(tmp); |
| __ lea(tmp, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); |
| __ push(tmp); |
| |
| __ call_VM_leaf(copyfunc_addr, 5); |
| #else |
| __ movl2ptr(length, length); //higher 32bits must be null |
| |
| __ lea(c_rarg0, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); |
| assert_different_registers(c_rarg0, dst, dst_pos, length); |
| __ lea(c_rarg1, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); |
| assert_different_registers(c_rarg1, dst, length); |
| |
| __ mov(c_rarg2, length); |
| assert_different_registers(c_rarg2, dst); |
| |
| #ifdef _WIN64 |
| // Allocate abi space for args but be sure to keep stack aligned |
| __ subptr(rsp, 6*wordSize); |
| __ load_klass(c_rarg3, dst); |
| __ movptr(c_rarg3, Address(c_rarg3, ObjArrayKlass::element_klass_offset())); |
| store_parameter(c_rarg3, 4); |
| __ movl(c_rarg3, Address(c_rarg3, Klass::super_check_offset_offset())); |
| __ call(RuntimeAddress(copyfunc_addr)); |
| __ addptr(rsp, 6*wordSize); |
| #else |
| __ load_klass(c_rarg4, dst); |
| __ movptr(c_rarg4, Address(c_rarg4, ObjArrayKlass::element_klass_offset())); |
| __ movl(c_rarg3, Address(c_rarg4, Klass::super_check_offset_offset())); |
| __ call(RuntimeAddress(copyfunc_addr)); |
| #endif |
| |
| #endif |
| |
| #ifndef PRODUCT |
| if (PrintC1Statistics) { |
| Label failed; |
| __ testl(rax, rax); |
| __ jcc(Assembler::notZero, failed); |
| __ incrementl(ExternalAddress((address)&Runtime1::_arraycopy_checkcast_cnt)); |
| __ bind(failed); |
| } |
| #endif |
| |
| __ testl(rax, rax); |
| __ jcc(Assembler::zero, *stub->continuation()); |
| |
| #ifndef PRODUCT |
| if (PrintC1Statistics) { |
| __ incrementl(ExternalAddress((address)&Runtime1::_arraycopy_checkcast_attempt_cnt)); |
| } |
| #endif |
| |
| __ mov(tmp, rax); |
| |
| __ xorl(tmp, -1); |
| |
| // Restore previously spilled arguments |
| __ 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)); |
| |
| |
| __ subl(length, tmp); |
| __ addl(src_pos, tmp); |
| __ addl(dst_pos, tmp); |
| } |
| |
| __ jmp(*stub->entry()); |
| |
| __ bind(cont); |
| __ pop(dst); |
| __ pop(src); |
| } |
| } |
| |
| #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; |
| __ mov_metadata(tmp, default_type->constant_encoding()); |
| #ifdef _LP64 |
| if (UseCompressedClassPointers) { |
| __ encode_klass_not_null(tmp); |
| } |
| #endif |
| |
| if (basic_type != T_OBJECT) { |
| |
| if (UseCompressedClassPointers) __ cmpl(tmp, dst_klass_addr); |
| else __ cmpptr(tmp, dst_klass_addr); |
| __ jcc(Assembler::notEqual, halt); |
| if (UseCompressedClassPointers) __ cmpl(tmp, src_klass_addr); |
| else __ cmpptr(tmp, src_klass_addr); |
| __ jcc(Assembler::equal, known_ok); |
| } else { |
| if (UseCompressedClassPointers) __ 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 |
| |
| #ifndef PRODUCT |
| if (PrintC1Statistics) { |
| __ incrementl(ExternalAddress(Runtime1::arraycopy_count_address(basic_type))); |
| } |
| #endif |
| |
| #ifdef _LP64 |
| assert_different_registers(c_rarg0, dst, dst_pos, length); |
| __ lea(c_rarg0, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type))); |
| assert_different_registers(c_rarg1, length); |
| __ 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 |
| |
| bool disjoint = (flags & LIR_OpArrayCopy::overlapping) == 0; |
| bool aligned = (flags & LIR_OpArrayCopy::unaligned) == 0; |
| const char *name; |
| address entry = StubRoutines::select_arraycopy_function(basic_type, aligned, disjoint, name, false); |
| __ call_VM_leaf(entry, 0); |
| |
| __ bind(*stub->continuation()); |
| } |
| |
| void LIR_Assembler::emit_updatecrc32(LIR_OpUpdateCRC32* op) { |
| assert(op->crc()->is_single_cpu(), "crc must be register"); |
| assert(op->val()->is_single_cpu(), "byte value must be register"); |
| assert(op->result_opr()->is_single_cpu(), "result must be register"); |
| Register crc = op->crc()->as_register(); |
| Register val = op->val()->as_register(); |
| Register res = op->result_opr()->as_register(); |
| |
| assert_different_registers(val, crc, res); |
| |
| __ lea(res, ExternalAddress(StubRoutines::crc_table_addr())); |
| __ notl(crc); // ~crc |
| __ update_byte_crc32(crc, val, res); |
| __ notl(crc); // ~crc |
| __ mov(res, crc); |
| } |
| |
| 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(); |
| ciMethod* callee = op->profiled_callee(); |
| |
| // 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(); |
| __ mov_metadata(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); |
| const bool callee_is_static = callee->is_loaded() && callee->is_static(); |
| // Perform additional virtual call profiling for invokevirtual and |
| // invokeinterface bytecodes |
| if ((bc == Bytecodes::_invokevirtual || bc == Bytecodes::_invokeinterface) && |
| !callee_is_static && // required for optimized MH invokes |
| 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 MethodData* 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))); |
| __ mov_metadata(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_profile_type(LIR_OpProfileType* op) { |
| Register obj = op->obj()->as_register(); |
| Register tmp = op->tmp()->as_pointer_register(); |
| Address mdo_addr = as_Address(op->mdp()->as_address_ptr()); |
| ciKlass* exact_klass = op->exact_klass(); |
| intptr_t current_klass = op->current_klass(); |
| bool not_null = op->not_null(); |
| bool no_conflict = op->no_conflict(); |
| |
| Label update, next, none; |
| |
| bool do_null = !not_null; |
| bool exact_klass_set = exact_klass != NULL && ciTypeEntries::valid_ciklass(current_klass) == exact_klass; |
| bool do_update = !TypeEntries::is_type_unknown(current_klass) && !exact_klass_set; |
| |
| assert(do_null || do_update, "why are we here?"); |
| assert(!TypeEntries::was_null_seen(current_klass) || do_update, "why are we here?"); |
| |
| __ verify_oop(obj); |
| |
| if (tmp != obj) { |
| __ mov(tmp, obj); |
| } |
| if (do_null) { |
| __ testptr(tmp, tmp); |
| __ jccb(Assembler::notZero, update); |
| if (!TypeEntries::was_null_seen(current_klass)) { |
| __ orptr(mdo_addr, TypeEntries::null_seen); |
| } |
| if (do_update) { |
| #ifndef ASSERT |
| __ jmpb(next); |
| } |
| #else |
| __ jmp(next); |
| } |
| } else { |
| __ testptr(tmp, tmp); |
| __ jccb(Assembler::notZero, update); |
| __ stop("unexpect null obj"); |
| #endif |
| } |
| |
| __ bind(update); |
| |
| if (do_update) { |
| #ifdef ASSERT |
| if (exact_klass != NULL) { |
| Label ok; |
| __ load_klass(tmp, tmp); |
| __ push(tmp); |
| __ mov_metadata(tmp, exact_klass->constant_encoding()); |
| __ cmpptr(tmp, Address(rsp, 0)); |
| __ jccb(Assembler::equal, ok); |
| __ stop("exact klass and actual klass differ"); |
| __ bind(ok); |
| __ pop(tmp); |
| } |
| #endif |
| if (!no_conflict) { |
| if (exact_klass == NULL || TypeEntries::is_type_none(current_klass)) { |
| if (exact_klass != NULL) { |
| __ mov_metadata(tmp, exact_klass->constant_encoding()); |
| } else { |
| __ load_klass(tmp, tmp); |
| } |
| |
| __ xorptr(tmp, mdo_addr); |
| __ testptr(tmp, TypeEntries::type_klass_mask); |
| // klass seen before, nothing to do. The unknown bit may have been |
| // set already but no need to check. |
| __ jccb(Assembler::zero, next); |
| |
| __ testptr(tmp, TypeEntries::type_unknown); |
| __ jccb(Assembler::notZero, next); // already unknown. Nothing to do anymore. |
| |
| if (TypeEntries::is_type_none(current_klass)) { |
| __ cmpptr(mdo_addr, 0); |
| __ jccb(Assembler::equal, none); |
| __ cmpptr(mdo_addr, TypeEntries::null_seen); |
| __ jccb(Assembler::equal, none); |
| // There is a chance that the checks above (re-reading profiling |
| // data from memory) fail if another thread has just set the |
| // profiling to this obj's klass |
| __ xorptr(tmp, mdo_addr); |
| __ testptr(tmp, TypeEntries::type_klass_mask); |
| __ jccb(Assembler::zero, next); |
| } |
| } else { |
| assert(ciTypeEntries::valid_ciklass(current_klass) != NULL && |
| ciTypeEntries::valid_ciklass(current_klass) != exact_klass, "conflict only"); |
| |
| __ movptr(tmp, mdo_addr); |
| __ testptr(tmp, TypeEntries::type_unknown); |
| __ jccb(Assembler::notZero, next); // already unknown. Nothing to do anymore. |
| } |
| |
| // different than before. Cannot keep accurate profile. |
| __ orptr(mdo_addr, TypeEntries::type_unknown); |
| |
| if (TypeEntries::is_type_none(current_klass)) { |
| __ jmpb(next); |
| |
| __ bind(none); |
| // first time here. Set profile type. |
| __ movptr(mdo_addr, tmp); |
| } |
| } else { |
| // There's a single possible klass at this profile point |
| assert(exact_klass != NULL, "should be"); |
| if (TypeEntries::is_type_none(current_klass)) { |
| __ mov_metadata(tmp, exact_klass->constant_encoding()); |
| __ xorptr(tmp, mdo_addr); |
| __ testptr(tmp, TypeEntries::type_klass_mask); |
| #ifdef ASSERT |
| __ jcc(Assembler::zero, next); |
| |
| { |
| Label ok; |
| __ push(tmp); |
| __ cmpptr(mdo_addr, 0); |
| __ jcc(Assembler::equal, ok); |
| __ cmpptr(mdo_addr, TypeEntries::null_seen); |
| __ jcc(Assembler::equal, ok); |
| // may have been set by another thread |
| __ mov_metadata(tmp, exact_klass->constant_encoding()); |
| __ xorptr(tmp, mdo_addr); |
| __ testptr(tmp, TypeEntries::type_mask); |
| __ jcc(Assembler::zero, ok); |
| |
| __ stop("unexpected profiling mismatch"); |
| __ bind(ok); |
| __ pop(tmp); |
| } |
| #else |
| __ jccb(Assembler::zero, next); |
| #endif |
| // first time here. Set profile type. |
| __ movptr(mdo_addr, tmp); |
| } else { |
| assert(ciTypeEntries::valid_ciklass(current_klass) != NULL && |
| ciTypeEntries::valid_ciklass(current_klass) != exact_klass, "inconsistent"); |
| |
| __ movptr(tmp, mdo_addr); |
| __ testptr(tmp, TypeEntries::type_unknown); |
| __ jccb(Assembler::notZero, next); // already unknown. Nothing to do anymore. |
| |
| __ orptr(mdo_addr, TypeEntries::type_unknown); |
| } |
| } |
| |
| __ bind(next); |
| } |
| } |
| |
| 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()); |
| } |
| if (UseAVX > 0) { |
| __ vnegatess(dest->as_xmm_float_reg(), dest->as_xmm_float_reg(), |
| ExternalAddress((address)float_signflip_pool)); |
| } else { |
| __ 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()); |
| } |
| if (UseAVX > 0) { |
| __ vnegatesd(dest->as_xmm_double_reg(), dest->as_xmm_double_reg(), |
| ExternalAddress((address)double_signflip_pool)); |
| } else { |
| __ 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(); |
| } |
| } |
| |
| #ifdef ASSERT |
| // emit run-time assertion |
| void LIR_Assembler::emit_assert(LIR_OpAssert* op) { |
| assert(op->code() == lir_assert, "must be"); |
| |
| if (op->in_opr1()->is_valid()) { |
| assert(op->in_opr2()->is_valid(), "both operands must be valid"); |
| comp_op(op->condition(), op->in_opr1(), op->in_opr2(), op); |
| } else { |
| assert(op->in_opr2()->is_illegal(), "both operands must be illegal"); |
| assert(op->condition() == lir_cond_always, "no other conditions allowed"); |
| } |
| |
| Label ok; |
| if (op->condition() != lir_cond_always) { |
| Assembler::Condition acond = Assembler::zero; |
| switch (op->condition()) { |
| 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, ok); |
| } |
| if (op->halt()) { |
| const char* str = __ code_string(op->msg()); |
| __ stop(str); |
| } else { |
| breakpoint(); |
| } |
| __ bind(ok); |
| } |
| #endif |
| |
| 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 |
| } |
| |
| void LIR_Assembler::membar_release() { |
| // No x86 machines currently require store fences |
| } |
| |
| void LIR_Assembler::membar_loadload() { |
| // no-op |
| //__ membar(Assembler::Membar_mask_bits(Assembler::loadload)); |
| } |
| |
| void LIR_Assembler::membar_storestore() { |
| // no-op |
| //__ membar(Assembler::Membar_mask_bits(Assembler::storestore)); |
| } |
| |
| void LIR_Assembler::membar_loadstore() { |
| // no-op |
| //__ membar(Assembler::Membar_mask_bits(Assembler::loadstore)); |
| } |
| |
| void LIR_Assembler::membar_storeload() { |
| __ membar(Assembler::Membar_mask_bits(Assembler::StoreLoad)); |
| } |
| |
| 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 |
| } |
| |
| void LIR_Assembler::atomic_op(LIR_Code code, LIR_Opr src, LIR_Opr data, LIR_Opr dest, LIR_Opr tmp) { |
| assert(data == dest, "xchg/xadd uses only 2 operands"); |
| |
| if (data->type() == T_INT) { |
| if (code == lir_xadd) { |
| if (os::is_MP()) { |
| __ lock(); |
| } |
| __ xaddl(as_Address(src->as_address_ptr()), data->as_register()); |
| } else { |
| __ xchgl(data->as_register(), as_Address(src->as_address_ptr())); |
| } |
| } else if (data->is_oop()) { |
| assert (code == lir_xchg, "xadd for oops"); |
| Register obj = data->as_register(); |
| #ifdef _LP64 |
| if (UseCompressedOops) { |
| __ encode_heap_oop(obj); |
| __ xchgl(obj, as_Address(src->as_address_ptr())); |
| __ decode_heap_oop(obj); |
| } else { |
| __ xchgptr(obj, as_Address(src->as_address_ptr())); |
| } |
| #else |
| __ xchgl(obj, as_Address(src->as_address_ptr())); |
| #endif |
| } else if (data->type() == T_LONG) { |
| #ifdef _LP64 |
| assert(data->as_register_lo() == data->as_register_hi(), "should be a single register"); |
| if (code == lir_xadd) { |
| if (os::is_MP()) { |
| __ lock(); |
| } |
| __ xaddq(as_Address(src->as_address_ptr()), data->as_register_lo()); |
| } else { |
| __ xchgq(data->as_register_lo(), as_Address(src->as_address_ptr())); |
| } |
| #else |
| ShouldNotReachHere(); |
| #endif |
| } else { |
| ShouldNotReachHere(); |
| } |
| } |
| |
| #undef __ |