1 /*
2 * Copyright (c) 1998, 2010, 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 "incls/_precompiled.incl"
26 #include "incls/_interpreterRT_sparc.cpp.incl"
27
28
29 #define __ _masm->
30
31
32 // Implementation of SignatureHandlerGenerator
33
34 void InterpreterRuntime::SignatureHandlerGenerator::pass_word(int size_of_arg, int offset_in_arg) {
35 Argument jni_arg(jni_offset() + offset_in_arg, false);
36 Register Rtmp = O0;
37 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
38
39 __ store_argument(Rtmp, jni_arg);
40 }
41
42 void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
43 Argument jni_arg(jni_offset(), false);
44 Register Rtmp = O0;
45
46 #ifdef _LP64
47 __ ldx(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
48 __ store_long_argument(Rtmp, jni_arg);
49 #else
50 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
51 __ store_argument(Rtmp, jni_arg);
52 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset() + 0), Rtmp);
53 Argument successor(jni_arg.successor());
54 __ store_argument(Rtmp, successor);
55 #endif
56 }
57
58
59 void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
60 Argument jni_arg(jni_offset(), false);
61 #ifdef _LP64
62 FloatRegister Rtmp = F0;
63 __ ldf(FloatRegisterImpl::S, Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
64 __ store_float_argument(Rtmp, jni_arg);
65 #else
66 Register Rtmp = O0;
67 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
68 __ store_argument(Rtmp, jni_arg);
69 #endif
70 }
71
72
73 void InterpreterRuntime::SignatureHandlerGenerator::pass_double() {
74 Argument jni_arg(jni_offset(), false);
75 #ifdef _LP64
76 FloatRegister Rtmp = F0;
77 __ ldf(FloatRegisterImpl::D, Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
78 __ store_double_argument(Rtmp, jni_arg);
79 #else
80 Register Rtmp = O0;
81 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
82 __ store_argument(Rtmp, jni_arg);
83 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
84 Argument successor(jni_arg.successor());
85 __ store_argument(Rtmp, successor);
86 #endif
87 }
88
89 void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
90 Argument jni_arg(jni_offset(), false);
91 Argument java_arg( offset(), true);
92 Register Rtmp1 = O0;
93 Register Rtmp2 = jni_arg.is_register() ? jni_arg.as_register() : O0;
94 Register Rtmp3 = G3_scratch;
95
96 // the handle for a receiver will never be null
97 bool do_NULL_check = offset() != 0 || is_static();
98
99 Address h_arg = Address(Llocals, Interpreter::local_offset_in_bytes(offset()));
100 __ ld_ptr(h_arg, Rtmp1);
101 if (!do_NULL_check) {
102 __ add(h_arg.base(), h_arg.disp(), Rtmp2);
103 } else {
104 if (Rtmp1 == Rtmp2)
105 __ tst(Rtmp1);
106 else __ addcc(G0, Rtmp1, Rtmp2); // optimize mov/test pair
107 Label L;
108 __ brx(Assembler::notZero, true, Assembler::pt, L);
109 __ delayed()->add(h_arg.base(), h_arg.disp(), Rtmp2);
110 __ bind(L);
111 }
112 __ store_ptr_argument(Rtmp2, jni_arg); // this is often a no-op
113 }
114
115
116 void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) {
117
118 // generate code to handle arguments
119 iterate(fingerprint);
120
121 // return result handler
122 AddressLiteral result_handler(Interpreter::result_handler(method()->result_type()));
123 __ sethi(result_handler, Lscratch);
124 __ retl();
125 __ delayed()->add(Lscratch, result_handler.low10(), Lscratch);
126
127 __ flush();
128 }
129
130
131 // Implementation of SignatureHandlerLibrary
132
133 void SignatureHandlerLibrary::pd_set_handler(address handler) {}
134
135
136 class SlowSignatureHandler: public NativeSignatureIterator {
137 private:
138 address _from;
139 intptr_t* _to;
140 intptr_t* _RegArgSignature; // Signature of first Arguments to be passed in Registers
141 uint _argcount;
142
143 enum { // We need to differenciate float from non floats in reg args
144 non_float = 0,
145 float_sig = 1,
146 double_sig = 2,
147 long_sig = 3
148 };
149
150 virtual void pass_int() {
151 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
152 _from -= Interpreter::stackElementSize;
153 add_signature( non_float );
154 }
155
156 virtual void pass_object() {
157 // pass address of from
158 intptr_t *from_addr = (intptr_t*)(_from + Interpreter::local_offset_in_bytes(0));
159 *_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
160 _from -= Interpreter::stackElementSize;
161 add_signature( non_float );
162 }
163
164 #ifdef _LP64
165 virtual void pass_float() {
166 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
167 _from -= Interpreter::stackElementSize;
168 add_signature( float_sig );
169 }
170
171 virtual void pass_double() {
172 *_to++ = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
173 _from -= 2*Interpreter::stackElementSize;
174 add_signature( double_sig );
175 }
176
177 virtual void pass_long() {
178 _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
179 _to += 1;
180 _from -= 2*Interpreter::stackElementSize;
181 add_signature( long_sig );
182 }
183 #else
184 // pass_double() is pass_long() and pass_float() only _LP64
185 virtual void pass_long() {
186 _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
187 _to[1] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0));
188 _to += 2;
189 _from -= 2*Interpreter::stackElementSize;
190 add_signature( non_float );
191 }
192
193 virtual void pass_float() {
194 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
195 _from -= Interpreter::stackElementSize;
196 add_signature( non_float );
197 }
198
199 #endif // _LP64
200
201 virtual void add_signature( intptr_t sig_type ) {
202 if ( _argcount < (sizeof (intptr_t))*4 ) {
203 *_RegArgSignature |= (sig_type << (_argcount*2) );
204 _argcount++;
205 }
206 }
207
208
209 public:
210 SlowSignatureHandler(methodHandle method, address from, intptr_t* to, intptr_t *RegArgSig) : NativeSignatureIterator(method) {
211 _from = from;
212 _to = to;
213 _RegArgSignature = RegArgSig;
214 *_RegArgSignature = 0;
215 _argcount = method->is_static() ? 2 : 1;
216 }
217 };
218
219
220 IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(
221 JavaThread* thread,
222 methodOopDesc* method,
223 intptr_t* from,
224 intptr_t* to ))
225 methodHandle m(thread, method);
226 assert(m->is_native(), "sanity check");
227 // handle arguments
228 // Warning: We use reg arg slot 00 temporarily to return the RegArgSignature
229 // back to the code that pops the arguments into the CPU registers
230 SlowSignatureHandler(m, (address)from, m->is_static() ? to+2 : to+1, to).iterate(UCONST64(-1));
231 // return result handler
232 return Interpreter::result_handler(m->result_type());
233 IRT_END