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 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 class BiasedLockingCounters; 26 27 // <sys/trap.h> promises that the system will not use traps 16-31 28 #define ST_RESERVED_FOR_USER_0 0x10 29 30 /* Written: David Ungar 4/19/97 */ 31 32 // Contains all the definitions needed for sparc assembly code generation. 33 34 // Register aliases for parts of the system: 35 36 // 64 bit values can be kept in g1-g5, o1-o5 and o7 and all 64 bits are safe 37 // across context switches in V8+ ABI. Of course, there are no 64 bit regs 38 // in V8 ABI. All 64 bits are preserved in V9 ABI for all registers. 39 40 // g2-g4 are scratch registers called "application globals". Their 41 // meaning is reserved to the "compilation system"--which means us! 42 // They are are not supposed to be touched by ordinary C code, although 43 // highly-optimized C code might steal them for temps. They are safe 44 // across thread switches, and the ABI requires that they be safe 2483 * jump around any code emitted between the creation of the instance and it's 2484 * automatic destruction at the end of a scope block, depending on the value of 2485 * the flag passed to the constructor, which will be checked at run-time. 2486 */ 2487 class SkipIfEqual : public StackObj { 2488 private: 2489 MacroAssembler* _masm; 2490 Label _label; 2491 2492 public: 2493 // 'temp' is a temp register that this object can use (and trash) 2494 SkipIfEqual(MacroAssembler*, Register temp, 2495 const bool* flag_addr, Assembler::Condition condition); 2496 ~SkipIfEqual(); 2497 }; 2498 2499 #ifdef ASSERT 2500 // On RISC, there's no benefit to verifying instruction boundaries. 2501 inline bool AbstractAssembler::pd_check_instruction_mark() { return false; } 2502 #endif | 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 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef CPU_SPARC_VM_ASSEMBLER_SPARC_HPP 26 #define CPU_SPARC_VM_ASSEMBLER_SPARC_HPP 27 28 class BiasedLockingCounters; 29 30 // <sys/trap.h> promises that the system will not use traps 16-31 31 #define ST_RESERVED_FOR_USER_0 0x10 32 33 /* Written: David Ungar 4/19/97 */ 34 35 // Contains all the definitions needed for sparc assembly code generation. 36 37 // Register aliases for parts of the system: 38 39 // 64 bit values can be kept in g1-g5, o1-o5 and o7 and all 64 bits are safe 40 // across context switches in V8+ ABI. Of course, there are no 64 bit regs 41 // in V8 ABI. All 64 bits are preserved in V9 ABI for all registers. 42 43 // g2-g4 are scratch registers called "application globals". Their 44 // meaning is reserved to the "compilation system"--which means us! 45 // They are are not supposed to be touched by ordinary C code, although 46 // highly-optimized C code might steal them for temps. They are safe 47 // across thread switches, and the ABI requires that they be safe 2486 * jump around any code emitted between the creation of the instance and it's 2487 * automatic destruction at the end of a scope block, depending on the value of 2488 * the flag passed to the constructor, which will be checked at run-time. 2489 */ 2490 class SkipIfEqual : public StackObj { 2491 private: 2492 MacroAssembler* _masm; 2493 Label _label; 2494 2495 public: 2496 // 'temp' is a temp register that this object can use (and trash) 2497 SkipIfEqual(MacroAssembler*, Register temp, 2498 const bool* flag_addr, Assembler::Condition condition); 2499 ~SkipIfEqual(); 2500 }; 2501 2502 #ifdef ASSERT 2503 // On RISC, there's no benefit to verifying instruction boundaries. 2504 inline bool AbstractAssembler::pd_check_instruction_mark() { return false; } 2505 #endif 2506 2507 #endif // CPU_SPARC_VM_ASSEMBLER_SPARC_HPP |