1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/cpu/zero/vm/stubGenerator_zero.cpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,288 @@
1.4 +/*
1.5 + * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * Copyright 2007, 2008, 2010 Red Hat, Inc.
1.7 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.8 + *
1.9 + * This code is free software; you can redistribute it and/or modify it
1.10 + * under the terms of the GNU General Public License version 2 only, as
1.11 + * published by the Free Software Foundation.
1.12 + *
1.13 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.14 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.15 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.16 + * version 2 for more details (a copy is included in the LICENSE file that
1.17 + * accompanied this code).
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License version
1.20 + * 2 along with this work; if not, write to the Free Software Foundation,
1.21 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.22 + *
1.23 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.24 + * or visit www.oracle.com if you need additional information or have any
1.25 + * questions.
1.26 + *
1.27 + */
1.28 +
1.29 +#include "precompiled.hpp"
1.30 +#include "asm/assembler.hpp"
1.31 +#include "assembler_zero.inline.hpp"
1.32 +#include "interpreter/interpreter.hpp"
1.33 +#include "nativeInst_zero.hpp"
1.34 +#include "oops/instanceOop.hpp"
1.35 +#include "oops/method.hpp"
1.36 +#include "oops/objArrayKlass.hpp"
1.37 +#include "oops/oop.inline.hpp"
1.38 +#include "prims/methodHandles.hpp"
1.39 +#include "runtime/frame.inline.hpp"
1.40 +#include "runtime/handles.inline.hpp"
1.41 +#include "runtime/sharedRuntime.hpp"
1.42 +#include "runtime/stubCodeGenerator.hpp"
1.43 +#include "runtime/stubRoutines.hpp"
1.44 +#include "runtime/thread.inline.hpp"
1.45 +#include "stack_zero.inline.hpp"
1.46 +#include "utilities/top.hpp"
1.47 +#ifdef COMPILER2
1.48 +#include "opto/runtime.hpp"
1.49 +#endif
1.50 +
1.51 +// Declaration and definition of StubGenerator (no .hpp file).
1.52 +// For a more detailed description of the stub routine structure
1.53 +// see the comment in stubRoutines.hpp
1.54 +
1.55 +class StubGenerator: public StubCodeGenerator {
1.56 + private:
1.57 + // The call stub is used to call Java from C
1.58 + static void call_stub(
1.59 + JavaCallWrapper *call_wrapper,
1.60 + intptr_t* result,
1.61 + BasicType result_type,
1.62 + Method* method,
1.63 + address entry_point,
1.64 + intptr_t* parameters,
1.65 + int parameter_words,
1.66 + TRAPS) {
1.67 + JavaThread *thread = (JavaThread *) THREAD;
1.68 + ZeroStack *stack = thread->zero_stack();
1.69 +
1.70 + // Make sure we have no pending exceptions
1.71 + assert(!HAS_PENDING_EXCEPTION, "call_stub called with pending exception");
1.72 +
1.73 + // Set up the stack if necessary
1.74 + bool stack_needs_teardown = false;
1.75 + if (stack->needs_setup()) {
1.76 + size_t zero_stack_size = stack->suggest_size(thread);
1.77 + stack->setup(alloca(zero_stack_size), zero_stack_size);
1.78 + stack_needs_teardown = true;
1.79 + }
1.80 +
1.81 + // Allocate and initialize our frame
1.82 + EntryFrame *frame =
1.83 + EntryFrame::build(parameters, parameter_words, call_wrapper, THREAD);
1.84 +
1.85 + if (!HAS_PENDING_EXCEPTION) {
1.86 + // Push the frame
1.87 + thread->push_zero_frame(frame);
1.88 +
1.89 + // Make the call
1.90 + Interpreter::invoke_method(method, entry_point, THREAD);
1.91 +
1.92 + // Store the result
1.93 + if (!HAS_PENDING_EXCEPTION) {
1.94 + switch (result_type) {
1.95 + case T_INT:
1.96 + *(jint *) result = *(jint *) stack->sp();
1.97 + break;
1.98 + case T_LONG:
1.99 + *(jlong *) result = *(jlong *) stack->sp();
1.100 + break;
1.101 + case T_FLOAT:
1.102 + *(jfloat *) result = *(jfloat *) stack->sp();
1.103 + break;
1.104 + case T_DOUBLE:
1.105 + *(jdouble *) result = *(jdouble *) stack->sp();
1.106 + break;
1.107 + case T_OBJECT:
1.108 + *(oop *) result = *(oop *) stack->sp();
1.109 + break;
1.110 + default:
1.111 + ShouldNotReachHere();
1.112 + }
1.113 + }
1.114 +
1.115 + // Unwind the frame
1.116 + thread->pop_zero_frame();
1.117 + }
1.118 +
1.119 + // Tear down the stack if necessary
1.120 + if (stack_needs_teardown)
1.121 + stack->teardown();
1.122 + }
1.123 +
1.124 + // These stubs get called from some dumb test routine.
1.125 + // I'll write them properly when they're called from
1.126 + // something that's actually doing something.
1.127 + static void fake_arraycopy_stub(address src, address dst, int count) {
1.128 + assert(count == 0, "huh?");
1.129 + }
1.130 +
1.131 + void generate_arraycopy_stubs() {
1.132 + // Call the conjoint generation methods immediately after
1.133 + // the disjoint ones so that short branches from the former
1.134 + // to the latter can be generated.
1.135 + StubRoutines::_jbyte_disjoint_arraycopy = (address) fake_arraycopy_stub;
1.136 + StubRoutines::_jbyte_arraycopy = (address) fake_arraycopy_stub;
1.137 +
1.138 + StubRoutines::_jshort_disjoint_arraycopy = (address) fake_arraycopy_stub;
1.139 + StubRoutines::_jshort_arraycopy = (address) fake_arraycopy_stub;
1.140 +
1.141 + StubRoutines::_jint_disjoint_arraycopy = (address) fake_arraycopy_stub;
1.142 + StubRoutines::_jint_arraycopy = (address) fake_arraycopy_stub;
1.143 +
1.144 + StubRoutines::_jlong_disjoint_arraycopy = (address) fake_arraycopy_stub;
1.145 + StubRoutines::_jlong_arraycopy = (address) fake_arraycopy_stub;
1.146 +
1.147 + StubRoutines::_oop_disjoint_arraycopy = ShouldNotCallThisStub();
1.148 + StubRoutines::_oop_arraycopy = ShouldNotCallThisStub();
1.149 +
1.150 + StubRoutines::_checkcast_arraycopy = ShouldNotCallThisStub();
1.151 + StubRoutines::_unsafe_arraycopy = ShouldNotCallThisStub();
1.152 + StubRoutines::_generic_arraycopy = ShouldNotCallThisStub();
1.153 +
1.154 + // We don't generate specialized code for HeapWord-aligned source
1.155 + // arrays, so just use the code we've already generated
1.156 + StubRoutines::_arrayof_jbyte_disjoint_arraycopy =
1.157 + StubRoutines::_jbyte_disjoint_arraycopy;
1.158 + StubRoutines::_arrayof_jbyte_arraycopy =
1.159 + StubRoutines::_jbyte_arraycopy;
1.160 +
1.161 + StubRoutines::_arrayof_jshort_disjoint_arraycopy =
1.162 + StubRoutines::_jshort_disjoint_arraycopy;
1.163 + StubRoutines::_arrayof_jshort_arraycopy =
1.164 + StubRoutines::_jshort_arraycopy;
1.165 +
1.166 + StubRoutines::_arrayof_jint_disjoint_arraycopy =
1.167 + StubRoutines::_jint_disjoint_arraycopy;
1.168 + StubRoutines::_arrayof_jint_arraycopy =
1.169 + StubRoutines::_jint_arraycopy;
1.170 +
1.171 + StubRoutines::_arrayof_jlong_disjoint_arraycopy =
1.172 + StubRoutines::_jlong_disjoint_arraycopy;
1.173 + StubRoutines::_arrayof_jlong_arraycopy =
1.174 + StubRoutines::_jlong_arraycopy;
1.175 +
1.176 + StubRoutines::_arrayof_oop_disjoint_arraycopy =
1.177 + StubRoutines::_oop_disjoint_arraycopy;
1.178 + StubRoutines::_arrayof_oop_arraycopy =
1.179 + StubRoutines::_oop_arraycopy;
1.180 + }
1.181 +
1.182 + static int SafeFetch32(int *adr, int errValue) {
1.183 + int value = errValue;
1.184 + value = *adr;
1.185 + return value;
1.186 + }
1.187 +
1.188 + static intptr_t SafeFetchN(intptr_t *adr, intptr_t errValue) {
1.189 + intptr_t value = errValue;
1.190 + value = *adr;
1.191 + return value;
1.192 + }
1.193 +
1.194 +
1.195 + void generate_initial() {
1.196 + // Generates all stubs and initializes the entry points
1.197 +
1.198 + // entry points that exist in all platforms Note: This is code
1.199 + // that could be shared among different platforms - however the
1.200 + // benefit seems to be smaller than the disadvantage of having a
1.201 + // much more complicated generator structure. See also comment in
1.202 + // stubRoutines.hpp.
1.203 +
1.204 + StubRoutines::_forward_exception_entry = ShouldNotCallThisStub();
1.205 + StubRoutines::_call_stub_entry = (address) call_stub;
1.206 + StubRoutines::_catch_exception_entry = ShouldNotCallThisStub();
1.207 +
1.208 + // atomic calls
1.209 + StubRoutines::_atomic_xchg_entry = ShouldNotCallThisStub();
1.210 + StubRoutines::_atomic_xchg_ptr_entry = ShouldNotCallThisStub();
1.211 + StubRoutines::_atomic_cmpxchg_entry = ShouldNotCallThisStub();
1.212 + StubRoutines::_atomic_cmpxchg_ptr_entry = ShouldNotCallThisStub();
1.213 + StubRoutines::_atomic_cmpxchg_long_entry = ShouldNotCallThisStub();
1.214 + StubRoutines::_atomic_add_entry = ShouldNotCallThisStub();
1.215 + StubRoutines::_atomic_add_ptr_entry = ShouldNotCallThisStub();
1.216 + StubRoutines::_fence_entry = ShouldNotCallThisStub();
1.217 +
1.218 + // amd64 does this here, sparc does it in generate_all()
1.219 + StubRoutines::_handler_for_unsafe_access_entry =
1.220 + ShouldNotCallThisStub();
1.221 + }
1.222 +
1.223 + void generate_all() {
1.224 + // Generates all stubs and initializes the entry points
1.225 +
1.226 + // These entry points require SharedInfo::stack0 to be set up in
1.227 + // non-core builds and need to be relocatable, so they each
1.228 + // fabricate a RuntimeStub internally.
1.229 + StubRoutines::_throw_AbstractMethodError_entry =
1.230 + ShouldNotCallThisStub();
1.231 +
1.232 + StubRoutines::_throw_NullPointerException_at_call_entry =
1.233 + ShouldNotCallThisStub();
1.234 +
1.235 + StubRoutines::_throw_StackOverflowError_entry =
1.236 + ShouldNotCallThisStub();
1.237 +
1.238 + // support for verify_oop (must happen after universe_init)
1.239 + StubRoutines::_verify_oop_subroutine_entry =
1.240 + ShouldNotCallThisStub();
1.241 +
1.242 + // arraycopy stubs used by compilers
1.243 + generate_arraycopy_stubs();
1.244 +
1.245 + // Safefetch stubs.
1.246 + StubRoutines::_safefetch32_entry = CAST_FROM_FN_PTR(address, StubGenerator::SafeFetch32);
1.247 + StubRoutines::_safefetch32_fault_pc = NULL;
1.248 + StubRoutines::_safefetch32_continuation_pc = NULL;
1.249 +
1.250 + StubRoutines::_safefetchN_entry = CAST_FROM_FN_PTR(address, StubGenerator::SafeFetchN);
1.251 + StubRoutines::_safefetchN_fault_pc = NULL;
1.252 + StubRoutines::_safefetchN_continuation_pc = NULL;
1.253 + }
1.254 +
1.255 + public:
1.256 + StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) {
1.257 + if (all) {
1.258 + generate_all();
1.259 + } else {
1.260 + generate_initial();
1.261 + }
1.262 + }
1.263 +};
1.264 +
1.265 +void StubGenerator_generate(CodeBuffer* code, bool all) {
1.266 + StubGenerator g(code, all);
1.267 +}
1.268 +
1.269 +EntryFrame *EntryFrame::build(const intptr_t* parameters,
1.270 + int parameter_words,
1.271 + JavaCallWrapper* call_wrapper,
1.272 + TRAPS) {
1.273 +
1.274 + ZeroStack *stack = ((JavaThread *) THREAD)->zero_stack();
1.275 + stack->overflow_check(header_words + parameter_words, CHECK_NULL);
1.276 +
1.277 + stack->push(0); // next_frame, filled in later
1.278 + intptr_t *fp = stack->sp();
1.279 + assert(fp - stack->sp() == next_frame_off, "should be");
1.280 +
1.281 + stack->push(ENTRY_FRAME);
1.282 + assert(fp - stack->sp() == frame_type_off, "should be");
1.283 +
1.284 + stack->push((intptr_t) call_wrapper);
1.285 + assert(fp - stack->sp() == call_wrapper_off, "should be");
1.286 +
1.287 + for (int i = 0; i < parameter_words; i++)
1.288 + stack->push(parameters[i]);
1.289 +
1.290 + return (EntryFrame *) fp;
1.291 +}
