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comparison src/cpu/sparc/vm/interpreterRT_sparc.cpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 1998-2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any 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 ASSERT
47 if (TaggedStackInterpreter) {
48 // check at least one tag is okay
49 Label ok;
50 __ ld_ptr(Llocals, Interpreter::local_tag_offset_in_bytes(offset() + 1), Rtmp);
51 __ cmp(Rtmp, G0);
52 __ brx(Assembler::equal, false, Assembler::pt, ok);
53 __ delayed()->nop();
54 __ stop("Native object has bad tag value");
55 __ bind(ok);
56 }
57 #endif // ASSERT
58
59 #ifdef _LP64
60 __ ldx(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
61 __ store_long_argument(Rtmp, jni_arg);
62 #else
63 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
64 __ store_argument(Rtmp, jni_arg);
65 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset() + 0), Rtmp);
66 Argument successor(jni_arg.successor());
67 __ store_argument(Rtmp, successor);
68 #endif
69 }
70
71
72 #ifdef _LP64
73 void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
74 Argument jni_arg(jni_offset(), false);
75 FloatRegister Rtmp = F0;
76 __ ldf(FloatRegisterImpl::S, Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
77 __ store_float_argument(Rtmp, jni_arg);
78 }
79 #endif
80
81
82 void InterpreterRuntime::SignatureHandlerGenerator::pass_double() {
83 Argument jni_arg(jni_offset(), false);
84 #ifdef _LP64
85 FloatRegister Rtmp = F0;
86 __ ldf(FloatRegisterImpl::D, Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
87 __ store_double_argument(Rtmp, jni_arg);
88 #else
89 Register Rtmp = O0;
90 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
91 __ store_argument(Rtmp, jni_arg);
92 __ ld(Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
93 Argument successor(jni_arg.successor());
94 __ store_argument(Rtmp, successor);
95 #endif
96 }
97
98 void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
99 Argument jni_arg(jni_offset(), false);
100 Argument java_arg( offset(), true);
101 Register Rtmp1 = O0;
102 Register Rtmp2 = jni_arg.is_register() ? jni_arg.as_register() : O0;
103 Register Rtmp3 = G3_scratch;
104
105 // the handle for a receiver will never be null
106 bool do_NULL_check = offset() != 0 || is_static();
107
108 Address h_arg = Address(Llocals, 0, Interpreter::local_offset_in_bytes(offset()));
109 __ ld_ptr(h_arg, Rtmp1);
110 #ifdef ASSERT
111 if (TaggedStackInterpreter) {
112 // check we have the obj and not the tag
113 Label ok;
114 __ mov(frame::TagReference, Rtmp3);
115 __ cmp(Rtmp1, Rtmp3);
116 __ brx(Assembler::notEqual, true, Assembler::pt, ok);
117 __ delayed()->nop();
118 __ stop("Native object passed tag by mistake");
119 __ bind(ok);
120 }
121 #endif // ASSERT
122 if (!do_NULL_check) {
123 __ add(h_arg, Rtmp2);
124 } else {
125 if (Rtmp1 == Rtmp2)
126 __ tst(Rtmp1);
127 else __ addcc(G0, Rtmp1, Rtmp2); // optimize mov/test pair
128 Label L;
129 __ brx(Assembler::notZero, true, Assembler::pt, L);
130 __ delayed()->add(h_arg, Rtmp2);
131 __ bind(L);
132 }
133 __ store_ptr_argument(Rtmp2, jni_arg); // this is often a no-op
134 }
135
136
137 void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) {
138
139 // generate code to handle arguments
140 iterate(fingerprint);
141
142 // return result handler
143 Address result_handler(Lscratch, Interpreter::result_handler(method()->result_type()));
144 __ sethi(result_handler);
145 __ retl();
146 __ delayed()->add(result_handler, result_handler.base());
147
148 __ flush();
149 }
150
151
152 // Implementation of SignatureHandlerLibrary
153
154 void SignatureHandlerLibrary::pd_set_handler(address handler) {}
155
156
157 class SlowSignatureHandler: public NativeSignatureIterator {
158 private:
159 address _from;
160 intptr_t* _to;
161 intptr_t* _RegArgSignature; // Signature of first Arguments to be passed in Registers
162 uint _argcount;
163
164 enum { // We need to differenciate float from non floats in reg args
165 non_float = 0,
166 float_sig = 1,
167 double_sig = 2,
168 long_sig = 3
169 };
170
171 #ifdef ASSERT
172 void verify_tag(frame::Tag t) {
173 assert(!TaggedStackInterpreter ||
174 *(intptr_t*)(_from+Interpreter::local_tag_offset_in_bytes(0)) == t, "wrong tag");
175 }
176 #endif // ASSERT
177
178 virtual void pass_int() {
179 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
180 debug_only(verify_tag(frame::TagValue));
181 _from -= Interpreter::stackElementSize();
182 add_signature( non_float );
183 }
184
185 virtual void pass_object() {
186 // pass address of from
187 intptr_t *from_addr = (intptr_t*)(_from + Interpreter::local_offset_in_bytes(0));
188 *_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
189 debug_only(verify_tag(frame::TagReference));
190 _from -= Interpreter::stackElementSize();
191 add_signature( non_float );
192 }
193
194 #ifdef _LP64
195 virtual void pass_float() {
196 *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
197 debug_only(verify_tag(frame::TagValue));
198 _from -= Interpreter::stackElementSize();
199 add_signature( float_sig );
200 }
201
202 virtual void pass_double() {
203 *_to++ = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
204 debug_only(verify_tag(frame::TagValue));
205 _from -= 2*Interpreter::stackElementSize();
206 add_signature( double_sig );
207 }
208
209 virtual void pass_long() {
210 _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
211 debug_only(verify_tag(frame::TagValue));
212 _to += 1;
213 _from -= 2*Interpreter::stackElementSize();
214 add_signature( long_sig );
215 }
216 #else
217 // pass_double() is pass_long() and pass_float() only _LP64
218 virtual void pass_long() {
219 _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
220 _to[1] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0));
221 debug_only(verify_tag(frame::TagValue));
222 _to += 2;
223 _from -= 2*Interpreter::stackElementSize();
224 add_signature( non_float );
225 }
226 #endif // _LP64
227
228 virtual void add_signature( intptr_t sig_type ) {
229 if ( _argcount < (sizeof (intptr_t))*4 ) {
230 *_RegArgSignature |= (sig_type << (_argcount*2) );
231 _argcount++;
232 }
233 }
234
235
236 public:
237 SlowSignatureHandler(methodHandle method, address from, intptr_t* to, intptr_t *RegArgSig) : NativeSignatureIterator(method) {
238 _from = from;
239 _to = to;
240 _RegArgSignature = RegArgSig;
241 *_RegArgSignature = 0;
242 _argcount = method->is_static() ? 2 : 1;
243 }
244 };
245
246
247 IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(
248 JavaThread* thread,
249 methodOopDesc* method,
250 intptr_t* from,
251 intptr_t* to ))
252 methodHandle m(thread, method);
253 assert(m->is_native(), "sanity check");
254 // handle arguments
255 // Warning: We use reg arg slot 00 temporarily to return the RegArgSignature
256 // back to the code that pops the arguments into the CPU registers
257 SlowSignatureHandler(m, (address)from, m->is_static() ? to+2 : to+1, to).iterate(UCONST64(-1));
258 // return result handler
259 return Interpreter::result_handler(m->result_type());
260 IRT_END