1 /* 2 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. 3 * Copyright 2007, 2008, 2009 Red Hat, Inc. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 21 * CA 95054 USA or visit www.sun.com if you need additional information or 22 * have any questions. 23 * 24 */ 25 26 // In normal, CPU-specific ports of HotSpot these two classes are used 27 // for generating assembly language. We don't do any of this in zero, 28 // of course, but we do sneak entry points around in CodeBuffers so we 29 // generate those here. 30 31 class Assembler : public AbstractAssembler { 32 public: 33 Assembler(CodeBuffer* code) : AbstractAssembler(code) {} 34 35 public: 36 void pd_patch_instruction(address branch, address target); 37 #ifndef PRODUCT 38 static void pd_print_patched_instruction(address branch); 39 #endif // PRODUCT 40 }; 41 42 class MacroAssembler : public Assembler { 43 public: 44 MacroAssembler(CodeBuffer* code) : Assembler(code) {} 45 46 public: 47 void align(int modulus); 48 void bang_stack_with_offset(int offset); 49 bool needs_explicit_null_check(intptr_t offset); 50 RegisterOrConstant delayed_value_impl(intptr_t* delayed_value_addr, 51 Register tmp, int offset); 52 public: 53 void advance(int bytes); 54 void store_oop(jobject obj); 55 }; 56 57 #ifdef ASSERT 58 inline bool AbstractAssembler::pd_check_instruction_mark() { 59 ShouldNotCallThis(); 60 } 61 #endif 62 63 address ShouldNotCallThisStub(); 64 address ShouldNotCallThisEntry();