1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/cpu/zero/vm/stubGenerator_zero.cpp Tue Oct 13 12:04:21 2009 -0700
1.3 @@ -0,0 +1,251 @@
1.4 +/*
1.5 + * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * Copyright 2007, 2008 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.24 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.25 + * have any questions.
1.26 + *
1.27 + */
1.28 +
1.29 +#include "incls/_precompiled.incl"
1.30 +#include "incls/_stubGenerator_zero.cpp.incl"
1.31 +
1.32 +// Declaration and definition of StubGenerator (no .hpp file).
1.33 +// For a more detailed description of the stub routine structure
1.34 +// see the comment in stubRoutines.hpp
1.35 +
1.36 +class StubGenerator: public StubCodeGenerator {
1.37 + private:
1.38 + // The call stub is used to call Java from C
1.39 + static void call_stub(
1.40 + JavaCallWrapper *call_wrapper,
1.41 + intptr_t* result,
1.42 + BasicType result_type,
1.43 + methodOop method,
1.44 + address entry_point,
1.45 + intptr_t* parameters,
1.46 + int parameter_words,
1.47 + TRAPS) {
1.48 + JavaThread *thread = (JavaThread *) THREAD;
1.49 + ZeroStack *stack = thread->zero_stack();
1.50 +
1.51 + // Make sure we have no pending exceptions
1.52 + assert(!HAS_PENDING_EXCEPTION, "call_stub called with pending exception");
1.53 +
1.54 + // Set up the stack if necessary
1.55 + bool stack_needs_teardown = false;
1.56 + if (stack->needs_setup()) {
1.57 + size_t stack_used = thread->stack_base() - (address) &stack_used;
1.58 + size_t stack_free = thread->stack_size() - stack_used;
1.59 + size_t zero_stack_size = align_size_down(stack_free / 2, wordSize);
1.60 +
1.61 + stack->setup(alloca(zero_stack_size), zero_stack_size);
1.62 + stack_needs_teardown = true;
1.63 + }
1.64 +
1.65 + // Allocate and initialize our frame
1.66 + thread->push_zero_frame(
1.67 + EntryFrame::build(stack, parameters, parameter_words, call_wrapper));
1.68 +
1.69 + // Make the call
1.70 + Interpreter::invoke_method(method, entry_point, THREAD);
1.71 +
1.72 + // Store result depending on type
1.73 + if (!HAS_PENDING_EXCEPTION) {
1.74 + switch (result_type) {
1.75 + case T_INT:
1.76 + *(jint *) result = *(jint *) stack->sp();
1.77 + break;
1.78 + case T_LONG:
1.79 + *(jlong *) result = *(jlong *) stack->sp();
1.80 + break;
1.81 + case T_FLOAT:
1.82 + *(jfloat *) result = *(jfloat *) stack->sp();
1.83 + break;
1.84 + case T_DOUBLE:
1.85 + *(jdouble *) result = *(jdouble *) stack->sp();
1.86 + break;
1.87 + case T_OBJECT:
1.88 + *(oop *) result = *(oop *) stack->sp();
1.89 + break;
1.90 + default:
1.91 + ShouldNotReachHere();
1.92 + }
1.93 + }
1.94 +
1.95 + // Unwind our frame
1.96 + thread->pop_zero_frame();
1.97 +
1.98 + // Tear down the stack if necessary
1.99 + if (stack_needs_teardown)
1.100 + stack->teardown();
1.101 + }
1.102 +
1.103 + // These stubs get called from some dumb test routine.
1.104 + // I'll write them properly when they're called from
1.105 + // something that's actually doing something.
1.106 + static void fake_arraycopy_stub(address src, address dst, int count) {
1.107 + assert(count == 0, "huh?");
1.108 + }
1.109 +
1.110 + void generate_arraycopy_stubs() {
1.111 + // Call the conjoint generation methods immediately after
1.112 + // the disjoint ones so that short branches from the former
1.113 + // to the latter can be generated.
1.114 + StubRoutines::_jbyte_disjoint_arraycopy = (address) fake_arraycopy_stub;
1.115 + StubRoutines::_jbyte_arraycopy = (address) fake_arraycopy_stub;
1.116 +
1.117 + StubRoutines::_jshort_disjoint_arraycopy = (address) fake_arraycopy_stub;
1.118 + StubRoutines::_jshort_arraycopy = (address) fake_arraycopy_stub;
1.119 +
1.120 + StubRoutines::_jint_disjoint_arraycopy = (address) fake_arraycopy_stub;
1.121 + StubRoutines::_jint_arraycopy = (address) fake_arraycopy_stub;
1.122 +
1.123 + StubRoutines::_jlong_disjoint_arraycopy = (address) fake_arraycopy_stub;
1.124 + StubRoutines::_jlong_arraycopy = (address) fake_arraycopy_stub;
1.125 +
1.126 + StubRoutines::_oop_disjoint_arraycopy = ShouldNotCallThisStub();
1.127 + StubRoutines::_oop_arraycopy = ShouldNotCallThisStub();
1.128 +
1.129 + StubRoutines::_checkcast_arraycopy = ShouldNotCallThisStub();
1.130 + StubRoutines::_unsafe_arraycopy = ShouldNotCallThisStub();
1.131 + StubRoutines::_generic_arraycopy = ShouldNotCallThisStub();
1.132 +
1.133 + // We don't generate specialized code for HeapWord-aligned source
1.134 + // arrays, so just use the code we've already generated
1.135 + StubRoutines::_arrayof_jbyte_disjoint_arraycopy =
1.136 + StubRoutines::_jbyte_disjoint_arraycopy;
1.137 + StubRoutines::_arrayof_jbyte_arraycopy =
1.138 + StubRoutines::_jbyte_arraycopy;
1.139 +
1.140 + StubRoutines::_arrayof_jshort_disjoint_arraycopy =
1.141 + StubRoutines::_jshort_disjoint_arraycopy;
1.142 + StubRoutines::_arrayof_jshort_arraycopy =
1.143 + StubRoutines::_jshort_arraycopy;
1.144 +
1.145 + StubRoutines::_arrayof_jint_disjoint_arraycopy =
1.146 + StubRoutines::_jint_disjoint_arraycopy;
1.147 + StubRoutines::_arrayof_jint_arraycopy =
1.148 + StubRoutines::_jint_arraycopy;
1.149 +
1.150 + StubRoutines::_arrayof_jlong_disjoint_arraycopy =
1.151 + StubRoutines::_jlong_disjoint_arraycopy;
1.152 + StubRoutines::_arrayof_jlong_arraycopy =
1.153 + StubRoutines::_jlong_arraycopy;
1.154 +
1.155 + StubRoutines::_arrayof_oop_disjoint_arraycopy =
1.156 + StubRoutines::_oop_disjoint_arraycopy;
1.157 + StubRoutines::_arrayof_oop_arraycopy =
1.158 + StubRoutines::_oop_arraycopy;
1.159 + }
1.160 +
1.161 + void generate_initial() {
1.162 + // Generates all stubs and initializes the entry points
1.163 +
1.164 + // entry points that exist in all platforms Note: This is code
1.165 + // that could be shared among different platforms - however the
1.166 + // benefit seems to be smaller than the disadvantage of having a
1.167 + // much more complicated generator structure. See also comment in
1.168 + // stubRoutines.hpp.
1.169 +
1.170 + StubRoutines::_forward_exception_entry = ShouldNotCallThisStub();
1.171 + StubRoutines::_call_stub_entry = (address) call_stub;
1.172 + StubRoutines::_catch_exception_entry = ShouldNotCallThisStub();
1.173 +
1.174 + // atomic calls
1.175 + StubRoutines::_atomic_xchg_entry = ShouldNotCallThisStub();
1.176 + StubRoutines::_atomic_xchg_ptr_entry = ShouldNotCallThisStub();
1.177 + StubRoutines::_atomic_cmpxchg_entry = ShouldNotCallThisStub();
1.178 + StubRoutines::_atomic_cmpxchg_ptr_entry = ShouldNotCallThisStub();
1.179 + StubRoutines::_atomic_cmpxchg_long_entry = ShouldNotCallThisStub();
1.180 + StubRoutines::_atomic_add_entry = ShouldNotCallThisStub();
1.181 + StubRoutines::_atomic_add_ptr_entry = ShouldNotCallThisStub();
1.182 + StubRoutines::_fence_entry = ShouldNotCallThisStub();
1.183 +
1.184 + // amd64 does this here, sparc does it in generate_all()
1.185 + StubRoutines::_handler_for_unsafe_access_entry =
1.186 + ShouldNotCallThisStub();
1.187 + }
1.188 +
1.189 + void generate_all() {
1.190 + // Generates all stubs and initializes the entry points
1.191 +
1.192 + // These entry points require SharedInfo::stack0 to be set up in
1.193 + // non-core builds and need to be relocatable, so they each
1.194 + // fabricate a RuntimeStub internally.
1.195 + StubRoutines::_throw_AbstractMethodError_entry =
1.196 + ShouldNotCallThisStub();
1.197 +
1.198 + StubRoutines::_throw_ArithmeticException_entry =
1.199 + ShouldNotCallThisStub();
1.200 +
1.201 + StubRoutines::_throw_NullPointerException_entry =
1.202 + ShouldNotCallThisStub();
1.203 +
1.204 + StubRoutines::_throw_NullPointerException_at_call_entry =
1.205 + ShouldNotCallThisStub();
1.206 +
1.207 + StubRoutines::_throw_StackOverflowError_entry =
1.208 + ShouldNotCallThisStub();
1.209 +
1.210 + // support for verify_oop (must happen after universe_init)
1.211 + StubRoutines::_verify_oop_subroutine_entry =
1.212 + ShouldNotCallThisStub();
1.213 +
1.214 + // arraycopy stubs used by compilers
1.215 + generate_arraycopy_stubs();
1.216 + }
1.217 +
1.218 + public:
1.219 + StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) {
1.220 + if (all) {
1.221 + generate_all();
1.222 + } else {
1.223 + generate_initial();
1.224 + }
1.225 + }
1.226 +};
1.227 +
1.228 +void StubGenerator_generate(CodeBuffer* code, bool all) {
1.229 + StubGenerator g(code, all);
1.230 +}
1.231 +
1.232 +EntryFrame *EntryFrame::build(ZeroStack* stack,
1.233 + const intptr_t* parameters,
1.234 + int parameter_words,
1.235 + JavaCallWrapper* call_wrapper) {
1.236 + if (header_words + parameter_words > stack->available_words()) {
1.237 + Unimplemented();
1.238 + }
1.239 +
1.240 + stack->push(0); // next_frame, filled in later
1.241 + intptr_t *fp = stack->sp();
1.242 + assert(fp - stack->sp() == next_frame_off, "should be");
1.243 +
1.244 + stack->push(ENTRY_FRAME);
1.245 + assert(fp - stack->sp() == frame_type_off, "should be");
1.246 +
1.247 + stack->push((intptr_t) call_wrapper);
1.248 + assert(fp - stack->sp() == call_wrapper_off, "should be");
1.249 +
1.250 + for (int i = 0; i < parameter_words; i++)
1.251 + stack->push(parameters[i]);
1.252 +
1.253 + return (EntryFrame *) fp;
1.254 +}
