Mercurial > hg > truffle
annotate src/cpu/sparc/vm/stubRoutines_sparc.hpp @ 1846:d55217dc206f
6829194: JSR 292 needs to support compressed oops
Reviewed-by: kvn, jrose
author | twisti |
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date | Mon, 11 Oct 2010 04:18:58 -0700 |
parents | d257356e35f0 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 // This file holds the platform specific parts of the StubRoutines | |
26 // definition. See stubRoutines.hpp for a description on how to | |
27 // extend it. | |
28 | |
29 | |
30 // So unfortunately c2 will call with a pc from a frame object | |
31 // (already adjusted) and a raw pc (unadjusted), so we need to check both. | |
32 // It didn't use to be like this before adapter removal. | |
33 static bool returns_to_call_stub(address return_pc) { | |
34 return ((return_pc + frame::pc_return_offset) == _call_stub_return_address) || | |
35 (return_pc == _call_stub_return_address ); | |
36 } | |
37 | |
38 enum /* platform_dependent_constants */ { | |
39 // %%%%%%%% May be able to shrink this a lot | |
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40 code_size1 = 20000, // simply increase if too small (assembler will crash if too small) |
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41 code_size2 = 20000 // simply increase if too small (assembler will crash if too small) |
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42 }; |
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43 |
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44 // MethodHandles adapters |
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45 enum method_handles_platform_dependent_constants { |
1846 | 46 method_handles_adapters_code_size = 15000 |
0 | 47 }; |
48 | |
49 class Sparc { | |
50 friend class StubGenerator; | |
51 | |
52 public: | |
53 enum { nof_instance_allocators = 10 }; | |
54 | |
55 // allocator lock values | |
56 enum { | |
57 unlocked = 0, | |
58 locked = 1 | |
59 }; | |
60 | |
61 enum { | |
62 v8_oop_lock_ignore_bits = 2, | |
63 v8_oop_lock_bits = 4, | |
64 nof_v8_oop_lock_cache_entries = 1 << (v8_oop_lock_bits+v8_oop_lock_ignore_bits), | |
65 v8_oop_lock_mask = right_n_bits(v8_oop_lock_bits), | |
66 v8_oop_lock_mask_in_place = v8_oop_lock_mask << v8_oop_lock_ignore_bits | |
67 }; | |
68 | |
69 static int _v8_oop_lock_cache[nof_v8_oop_lock_cache_entries]; | |
70 | |
71 private: | |
72 static address _test_stop_entry; | |
73 static address _stop_subroutine_entry; | |
74 static address _flush_callers_register_windows_entry; | |
75 | |
76 static int _atomic_memory_operation_lock; | |
77 | |
78 static address _partial_subtype_check; | |
79 | |
80 public: | |
81 // %%% global lock for everyone who needs to use atomic_compare_and_exchange | |
82 // %%% or atomic_increment -- should probably use more locks for more | |
83 // %%% scalability-- for instance one for each eden space or group of | |
84 | |
85 // address of the lock for atomic_compare_and_exchange | |
86 static int* atomic_memory_operation_lock_addr() { return &_atomic_memory_operation_lock; } | |
87 | |
88 // accessor and mutator for _atomic_memory_operation_lock | |
89 static int atomic_memory_operation_lock() { return _atomic_memory_operation_lock; } | |
90 static void set_atomic_memory_operation_lock(int value) { _atomic_memory_operation_lock = value; } | |
91 | |
92 // test assembler stop routine by setting registers | |
93 static void (*test_stop_entry()) () { return CAST_TO_FN_PTR(void (*)(void), _test_stop_entry); } | |
94 | |
95 // a subroutine for debugging assembler code | |
96 static address stop_subroutine_entry_address() { return (address)&_stop_subroutine_entry; } | |
97 | |
98 // flushes (all but current) register window | |
99 static intptr_t* (*flush_callers_register_windows_func())() { return CAST_TO_FN_PTR(intptr_t* (*)(void), _flush_callers_register_windows_entry); } | |
100 | |
101 static address partial_subtype_check() { return _partial_subtype_check; } | |
102 }; |