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
|