1 /*
2 * Copyright (c) 1998, 2012, 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_CODE_VMREG_HPP
26 #define SHARE_VM_CODE_VMREG_HPP
27
28 #include "memory/allocation.hpp"
29 #include "utilities/globalDefinitions.hpp"
30 #include "asm/register.hpp"
31
32 #ifdef COMPILER2
33 #include "opto/adlcVMDeps.hpp"
34 #include "utilities/ostream.hpp"
35 #ifdef TARGET_ARCH_MODEL_x86_32
36 # include "adfiles/adGlobals_x86_32.hpp"
37 #endif
38 #ifdef TARGET_ARCH_MODEL_x86_64
39 # include "adfiles/adGlobals_x86_64.hpp"
40 #endif
41 #ifdef TARGET_ARCH_MODEL_sparc
42 # include "adfiles/adGlobals_sparc.hpp"
43 #endif
44 #ifdef TARGET_ARCH_MODEL_zero
45 # include "adfiles/adGlobals_zero.hpp"
46 #endif
47 #ifdef TARGET_ARCH_MODEL_arm
48 # include "adfiles/adGlobals_arm.hpp"
49 #endif
50 #ifdef TARGET_ARCH_MODEL_ppc_32
51 # include "adfiles/adGlobals_ppc_32.hpp"
52 #endif
53 #ifdef TARGET_ARCH_MODEL_ppc_64
54 # include "adfiles/adGlobals_ppc_64.hpp"
55 #endif
56 #endif
57
58 //------------------------------VMReg------------------------------------------
59 // The VM uses 'unwarped' stack slots; the compiler uses 'warped' stack slots.
60 // Register numbers below VMRegImpl::stack0 are the same for both. Register
61 // numbers above stack0 are either warped (in the compiler) or unwarped
62 // (in the VM). Unwarped numbers represent stack indices, offsets from
63 // the current stack pointer. Warped numbers are required during compilation
64 // when we do not yet know how big the frame will be.
65
66 class VMRegImpl;
67 typedef VMRegImpl* VMReg;
68
69 class VMRegImpl {
70 // friend class OopMap;
71 friend class VMStructs;
72 friend class OptoReg;
73 // friend class Location;
74 private:
75 enum {
90
91 const char* name() {
92 if (is_reg()) {
93 return regName[value()];
94 } else if (!is_valid()) {
95 return "BAD";
96 } else {
97 // shouldn't really be called with stack
98 return "STACKED REG";
99 }
100 }
101 static VMReg Bad() { return (VMReg) (intptr_t) BAD_REG; }
102 bool is_valid() const { return ((intptr_t) this) != BAD_REG; }
103 bool is_stack() const { return (intptr_t) this >= (intptr_t) stack0; }
104 bool is_reg() const { return is_valid() && !is_stack(); }
105
106 // A concrete register is a value that returns true for is_reg() and is
107 // also a register you could use in the assembler. On machines with
108 // 64bit registers only one half of the VMReg (and OptoReg) is considered
109 // concrete.
110 bool is_concrete();
111
112 // VMRegs are 4 bytes wide on all platforms
113 static const int stack_slot_size;
114 static const int slots_per_word;
115
116
117 // This really ought to check that the register is "real" in the sense that
118 // we don't try and get the VMReg number of a physical register that doesn't
119 // have an expressible part. That would be pd specific code
120 VMReg next() {
121 assert((is_reg() && value() < stack0->value() - 1) || is_stack(), "must be");
122 return (VMReg)(intptr_t)(value() + 1);
123 }
124 VMReg next(int i) {
125 assert((is_reg() && value() < stack0->value() - i) || is_stack(), "must be");
126 return (VMReg)(intptr_t)(value() + i);
127 }
128 VMReg prev() {
129 assert((is_stack() && value() > stack0->value()) || (is_reg() && value() != 0), "must be");
130 return (VMReg)(intptr_t)(value() - 1);
|
1 /*
2 * Copyright (c) 1998, 2014, 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_CODE_VMREG_HPP
26 #define SHARE_VM_CODE_VMREG_HPP
27
28 #include "asm/register.hpp"
29 #include "memory/allocation.hpp"
30 #include "utilities/globalDefinitions.hpp"
31
32 #ifdef COMPILER2
33 #include "opto/adlcVMDeps.hpp"
34 #include "utilities/ostream.hpp"
35 #endif
36
37 //------------------------------VMReg------------------------------------------
38 // The VM uses 'unwarped' stack slots; the compiler uses 'warped' stack slots.
39 // Register numbers below VMRegImpl::stack0 are the same for both. Register
40 // numbers above stack0 are either warped (in the compiler) or unwarped
41 // (in the VM). Unwarped numbers represent stack indices, offsets from
42 // the current stack pointer. Warped numbers are required during compilation
43 // when we do not yet know how big the frame will be.
44
45 class VMRegImpl;
46 typedef VMRegImpl* VMReg;
47
48 class VMRegImpl {
49 // friend class OopMap;
50 friend class VMStructs;
51 friend class OptoReg;
52 // friend class Location;
53 private:
54 enum {
69
70 const char* name() {
71 if (is_reg()) {
72 return regName[value()];
73 } else if (!is_valid()) {
74 return "BAD";
75 } else {
76 // shouldn't really be called with stack
77 return "STACKED REG";
78 }
79 }
80 static VMReg Bad() { return (VMReg) (intptr_t) BAD_REG; }
81 bool is_valid() const { return ((intptr_t) this) != BAD_REG; }
82 bool is_stack() const { return (intptr_t) this >= (intptr_t) stack0; }
83 bool is_reg() const { return is_valid() && !is_stack(); }
84
85 // A concrete register is a value that returns true for is_reg() and is
86 // also a register you could use in the assembler. On machines with
87 // 64bit registers only one half of the VMReg (and OptoReg) is considered
88 // concrete.
89 // bool is_concrete();
90
91 // VMRegs are 4 bytes wide on all platforms
92 static const int stack_slot_size;
93 static const int slots_per_word;
94
95
96 // This really ought to check that the register is "real" in the sense that
97 // we don't try and get the VMReg number of a physical register that doesn't
98 // have an expressible part. That would be pd specific code
99 VMReg next() {
100 assert((is_reg() && value() < stack0->value() - 1) || is_stack(), "must be");
101 return (VMReg)(intptr_t)(value() + 1);
102 }
103 VMReg next(int i) {
104 assert((is_reg() && value() < stack0->value() - i) || is_stack(), "must be");
105 return (VMReg)(intptr_t)(value() + i);
106 }
107 VMReg prev() {
108 assert((is_stack() && value() > stack0->value()) || (is_reg() && value() != 0), "must be");
109 return (VMReg)(intptr_t)(value() - 1);
|