jdk

Форк
0
/
interpreterRT_x86_32.cpp 
156 строк · 5.3 Кб
1
/*
2
 * Copyright (c) 1998, 2021, 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
#include "precompiled.hpp"
26
#include "interpreter/interp_masm.hpp"
27
#include "interpreter/interpreter.hpp"
28
#include "interpreter/interpreterRuntime.hpp"
29
#include "memory/allocation.inline.hpp"
30
#include "oops/method.hpp"
31
#include "oops/oop.inline.hpp"
32
#include "runtime/handles.inline.hpp"
33
#include "runtime/icache.hpp"
34
#include "runtime/interfaceSupport.inline.hpp"
35
#include "runtime/signature.hpp"
36

37

38
#define __ _masm->
39

40

41
// Implementation of SignatureHandlerGenerator
42
InterpreterRuntime::SignatureHandlerGenerator::SignatureHandlerGenerator(const methodHandle& method, CodeBuffer* buffer) :
43
    NativeSignatureIterator(method) {
44
  _masm = new MacroAssembler(buffer);
45
#ifdef AMD64
46
#ifdef _WIN64
47
  _num_args = (method->is_static() ? 1 : 0);
48
  _stack_offset = (Argument::n_int_register_parameters_c+1)* wordSize; // don't overwrite return address
49
#else
50
  _num_int_args = (method->is_static() ? 1 : 0);
51
  _num_fp_args = 0;
52
  _stack_offset = wordSize; // don't overwrite return address
53
#endif // _WIN64
54
#endif // AMD64
55
}
56

57
void InterpreterRuntime::SignatureHandlerGenerator::pass_int() {
58
  move(offset(), jni_offset() + 1);
59
}
60

61
void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
62
  move(offset(), jni_offset() + 1);
63
}
64

65
void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
66
   move(offset(), jni_offset() + 2);
67
   move(offset() + 1, jni_offset() + 1);
68
}
69

70
void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
71
  box (offset(), jni_offset() + 1);
72
}
73

74
void InterpreterRuntime::SignatureHandlerGenerator::move(int from_offset, int to_offset) {
75
  __ movl(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));
76
  __ movl(Address(to(), to_offset * wordSize), temp());
77
}
78

79

80
void InterpreterRuntime::SignatureHandlerGenerator::box(int from_offset, int to_offset) {
81
  __ lea(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));
82
  __ cmpptr(Address(from(), Interpreter::local_offset_in_bytes(from_offset)), NULL_WORD); // do not use temp() to avoid AGI
83
  Label L;
84
  __ jcc(Assembler::notZero, L);
85
  __ movptr(temp(), NULL_WORD);
86
  __ bind(L);
87
  __ movptr(Address(to(), to_offset * wordSize), temp());
88
}
89

90

91
void InterpreterRuntime::SignatureHandlerGenerator::generate( uint64_t fingerprint) {
92
  // generate code to handle arguments
93
  iterate(fingerprint);
94
  // return result handler
95
  __ lea(rax,
96
         ExternalAddress((address)Interpreter::result_handler(method()->result_type())));
97
  // return
98
  __ ret(0);
99
  __ flush();
100
}
101

102

103
Register InterpreterRuntime::SignatureHandlerGenerator::from()       { return rdi; }
104
Register InterpreterRuntime::SignatureHandlerGenerator::to()         { return rsp; }
105
Register InterpreterRuntime::SignatureHandlerGenerator::temp()       { return rcx; }
106

107

108
// Implementation of SignatureHandlerLibrary
109

110
void SignatureHandlerLibrary::pd_set_handler(address handler) {}
111

112
class SlowSignatureHandler: public NativeSignatureIterator {
113
 private:
114
  address   _from;
115
  intptr_t* _to;
116

117
  virtual void pass_int() {
118
    *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
119
    _from -= Interpreter::stackElementSize;
120
  }
121

122
  virtual void pass_float() {
123
    *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
124
    _from -= Interpreter::stackElementSize;
125
  }
126

127
  virtual void pass_long() {
128
    _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
129
    _to[1] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0));
130
    _to += 2;
131
    _from -= 2*Interpreter::stackElementSize;
132
  }
133

134
  virtual void pass_object() {
135
    // pass address of from
136
    intptr_t from_addr = (intptr_t)(_from + Interpreter::local_offset_in_bytes(0));
137
    *_to++ = (*(intptr_t*)from_addr == 0) ? NULL_WORD : from_addr;
138
    _from -= Interpreter::stackElementSize;
139
   }
140

141
 public:
142
  SlowSignatureHandler(const methodHandle& method, address from, intptr_t* to) :
143
    NativeSignatureIterator(method) {
144
    _from = from;
145
    _to   = to + (is_static() ? 2 : 1);
146
  }
147
};
148

149
JRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(JavaThread* current, Method* method, intptr_t* from, intptr_t* to))
150
  methodHandle m(current, (Method*)method);
151
  assert(m->is_native(), "sanity check");
152
  // handle arguments
153
  SlowSignatureHandler(m, (address)from, to + 1).iterate((uint64_t)CONST64(-1));
154
  // return result handler
155
  return Interpreter::result_handler(m->result_type());
156
JRT_END
157

Использование cookies

Мы используем файлы cookie в соответствии с Политикой конфиденциальности и Политикой использования cookies.

Нажимая кнопку «Принимаю», Вы даете АО «СберТех» согласие на обработку Ваших персональных данных в целях совершенствования нашего веб-сайта и Сервиса GitVerse, а также повышения удобства их использования.

Запретить использование cookies Вы можете самостоятельно в настройках Вашего браузера.