1 /*
2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
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 SHARE_VM_RUNTIME_ICACHE_HPP
26 #define SHARE_VM_RUNTIME_ICACHE_HPP
27
28 #include "memory/allocation.hpp"
29 #include "runtime/stubCodeGenerator.hpp"
30
31 // Interface for updating the instruction cache. Whenever the VM modifies
32 // code, part of the processor instruction cache potentially has to be flushed.
33
34 // Default implementation is in icache.cpp, and can be hidden per-platform.
35 // Most platforms must provide only ICacheStubGenerator::generate_icache_flush().
36 // Platforms that don't require icache flushing can just nullify the public
37 // members of AbstractICache in their ICache class. AbstractICache should never
38 // be referenced other than by deriving the ICache class from it.
39 //
40 // The code for the ICache class and for generate_icache_flush() must be in
41 // architecture-specific files, i.e., icache_<arch>.hpp/.cpp
42
43 class AbstractICache : AllStatic {
44 public:
45 // The flush stub signature
46 typedef int (*flush_icache_stub_t)(address addr, int lines, int magic);
47
48 protected:
49 // The flush stub function address
51
52 // Call the flush stub
53 static void call_flush_stub(address start, int lines);
54
55 public:
56 enum {
57 stub_size = 0, // Size of the icache flush stub in bytes
58 line_size = 0, // Icache line size in bytes
59 log2_line_size = 0 // log2(line_size)
60 };
61
62 static void initialize();
63 static void invalidate_word(address addr);
64 static void invalidate_range(address start, int nbytes);
65 };
66
67
68 // Must be included before the definition of ICacheStubGenerator
69 // because ICacheStubGenerator uses ICache definitions.
70
71 #ifdef TARGET_ARCH_x86
72 # include "icache_x86.hpp"
73 #endif
74 #ifdef TARGET_ARCH_sparc
75 # include "icache_sparc.hpp"
76 #endif
77 #ifdef TARGET_ARCH_zero
78 # include "icache_zero.hpp"
79 #endif
80 #ifdef TARGET_ARCH_arm
81 # include "icache_arm.hpp"
82 #endif
83 #ifdef TARGET_ARCH_ppc
84 # include "icache_ppc.hpp"
85 #endif
86 #ifdef TARGET_ARCH_aarch64
87 # include "icache_aarch64.hpp"
88 #endif
89
90
91
92 class ICacheStubGenerator : public StubCodeGenerator {
93 public:
94 ICacheStubGenerator(CodeBuffer *c) : StubCodeGenerator(c) {}
95
96 // Generate the icache flush stub.
97 //
98 // Since we cannot flush the cache when this stub is generated,
99 // it must be generated first, and just to be sure, we do extra
100 // work to allow a check that these instructions got executed.
101 //
102 // The flush stub has three parameters (see flush_icache_stub_t).
103 //
104 // addr - Start address, must be aligned at log2_line_size
105 // lines - Number of line_size icache lines to flush
106 // magic - Magic number copied to result register to make sure
107 // the stub executed properly
108 //
109 // A template for generate_icache_flush is
110 //
|
1 /*
2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
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 SHARE_VM_RUNTIME_ICACHE_HPP
26 #define SHARE_VM_RUNTIME_ICACHE_HPP
27
28 #include "memory/allocation.hpp"
29 #include "runtime/stubCodeGenerator.hpp"
30 #include "utilities/macros.hpp"
31
32 // Interface for updating the instruction cache. Whenever the VM modifies
33 // code, part of the processor instruction cache potentially has to be flushed.
34
35 // Default implementation is in icache.cpp, and can be hidden per-platform.
36 // Most platforms must provide only ICacheStubGenerator::generate_icache_flush().
37 // Platforms that don't require icache flushing can just nullify the public
38 // members of AbstractICache in their ICache class. AbstractICache should never
39 // be referenced other than by deriving the ICache class from it.
40 //
41 // The code for the ICache class and for generate_icache_flush() must be in
42 // architecture-specific files, i.e., icache_<arch>.hpp/.cpp
43
44 class AbstractICache : AllStatic {
45 public:
46 // The flush stub signature
47 typedef int (*flush_icache_stub_t)(address addr, int lines, int magic);
48
49 protected:
50 // The flush stub function address
52
53 // Call the flush stub
54 static void call_flush_stub(address start, int lines);
55
56 public:
57 enum {
58 stub_size = 0, // Size of the icache flush stub in bytes
59 line_size = 0, // Icache line size in bytes
60 log2_line_size = 0 // log2(line_size)
61 };
62
63 static void initialize();
64 static void invalidate_word(address addr);
65 static void invalidate_range(address start, int nbytes);
66 };
67
68
69 // Must be included before the definition of ICacheStubGenerator
70 // because ICacheStubGenerator uses ICache definitions.
71
72 #include CPU_HEADER(icache)
73
74 class ICacheStubGenerator : public StubCodeGenerator {
75 public:
76 ICacheStubGenerator(CodeBuffer *c) : StubCodeGenerator(c) {}
77
78 // Generate the icache flush stub.
79 //
80 // Since we cannot flush the cache when this stub is generated,
81 // it must be generated first, and just to be sure, we do extra
82 // work to allow a check that these instructions got executed.
83 //
84 // The flush stub has three parameters (see flush_icache_stub_t).
85 //
86 // addr - Start address, must be aligned at log2_line_size
87 // lines - Number of line_size icache lines to flush
88 // magic - Magic number copied to result register to make sure
89 // the stub executed properly
90 //
91 // A template for generate_icache_flush is
92 //
|