Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/asm/assembler.hpp
src/share/vm/asm/assembler.hpp
- changeset 1100
- c89f86385056
- parent 1057
- 56aae7be60d4
- child 1907
- c18cbe5936b8
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| 1082:bd441136a5ce | 1100:c89f86385056 |
|---|---|
| 1 /* | 1 /* |
| 2 * Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved. | 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | 4 * |
| 5 * This code is free software; you can redistribute it and/or modify it | 5 * This code is free software; you can redistribute it and/or modify it |
| 6 * under the terms of the GNU General Public License version 2 only, as | 6 * under the terms of the GNU General Public License version 2 only, as |
| 7 * published by the Free Software Foundation. | 7 * published by the Free Software Foundation. |
| 141 }; | 141 }; |
| 142 | 142 |
| 143 // A union type for code which has to assemble both constant and | 143 // A union type for code which has to assemble both constant and |
| 144 // non-constant operands, when the distinction cannot be made | 144 // non-constant operands, when the distinction cannot be made |
| 145 // statically. | 145 // statically. |
| 146 class RegisterConstant VALUE_OBJ_CLASS_SPEC { | 146 class RegisterOrConstant VALUE_OBJ_CLASS_SPEC { |
| 147 private: | 147 private: |
| 148 Register _r; | 148 Register _r; |
| 149 intptr_t _c; | 149 intptr_t _c; |
| 150 | 150 |
| 151 public: | 151 public: |
| 152 RegisterConstant(): _r(noreg), _c(0) {} | 152 RegisterOrConstant(): _r(noreg), _c(0) {} |
| 153 RegisterConstant(Register r): _r(r), _c(0) {} | 153 RegisterOrConstant(Register r): _r(r), _c(0) {} |
| 154 RegisterConstant(intptr_t c): _r(noreg), _c(c) {} | 154 RegisterOrConstant(intptr_t c): _r(noreg), _c(c) {} |
| 155 | 155 |
| 156 Register as_register() const { assert(is_register(),""); return _r; } | 156 Register as_register() const { assert(is_register(),""); return _r; } |
| 157 intptr_t as_constant() const { assert(is_constant(),""); return _c; } | 157 intptr_t as_constant() const { assert(is_constant(),""); return _c; } |
| 158 | 158 |
| 159 Register register_or_noreg() const { return _r; } | 159 Register register_or_noreg() const { return _r; } |
| 308 // Thus, the eventual value of the constant must not be zero. | 308 // Thus, the eventual value of the constant must not be zero. |
| 309 // This is fine, since this is designed for embedding object field | 309 // This is fine, since this is designed for embedding object field |
| 310 // offsets in code which must be generated before the object class is loaded. | 310 // offsets in code which must be generated before the object class is loaded. |
| 311 // Field offsets are never zero, since an object's header (mark word) | 311 // Field offsets are never zero, since an object's header (mark word) |
| 312 // is located at offset zero. | 312 // is located at offset zero. |
| 313 RegisterConstant delayed_value(int(*value_fn)(), Register tmp, int offset = 0) { | 313 RegisterOrConstant delayed_value(int(*value_fn)(), Register tmp, int offset = 0) { |
| 314 return delayed_value(delayed_value_addr(value_fn), tmp, offset); | 314 return delayed_value_impl(delayed_value_addr(value_fn), tmp, offset); |
| 315 } | 315 } |
| 316 RegisterConstant delayed_value(address(*value_fn)(), Register tmp, int offset = 0) { | 316 RegisterOrConstant delayed_value(address(*value_fn)(), Register tmp, int offset = 0) { |
| 317 return delayed_value(delayed_value_addr(value_fn), tmp, offset); | 317 return delayed_value_impl(delayed_value_addr(value_fn), tmp, offset); |
| 318 } | 318 } |
| 319 virtual RegisterConstant delayed_value(intptr_t* delayed_value_addr, Register tmp, int offset) = 0; | 319 virtual RegisterOrConstant delayed_value_impl(intptr_t* delayed_value_addr, Register tmp, int offset) = 0; |
| 320 // Last overloading is platform-dependent; look in assembler_<arch>.cpp. | 320 // Last overloading is platform-dependent; look in assembler_<arch>.cpp. |
| 321 static intptr_t* delayed_value_addr(int(*constant_fn)()); | 321 static intptr_t* delayed_value_addr(int(*constant_fn)()); |
| 322 static intptr_t* delayed_value_addr(address(*constant_fn)()); | 322 static intptr_t* delayed_value_addr(address(*constant_fn)()); |
| 323 static void update_delayed_values(); | 323 static void update_delayed_values(); |
| 324 | 324 |
