Mercurial > hg > graal-jvmci-8
diff src/cpu/zero/vm/stubGenerator_zero.cpp @ 1010:354d3184f6b2
6890308: integrate zero assembler hotspot changes
Reviewed-by: never
Contributed-by: gbenson@redhat.com
author | never |
---|---|
date | Tue, 13 Oct 2009 12:04:21 -0700 |
parents | |
children | f9271ff9d324 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/cpu/zero/vm/stubGenerator_zero.cpp Tue Oct 13 12:04:21 2009 -0700 @@ -0,0 +1,251 @@ +/* + * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved. + * Copyright 2007, 2008 Red Hat, Inc. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +#include "incls/_precompiled.incl" +#include "incls/_stubGenerator_zero.cpp.incl" + +// Declaration and definition of StubGenerator (no .hpp file). +// For a more detailed description of the stub routine structure +// see the comment in stubRoutines.hpp + +class StubGenerator: public StubCodeGenerator { + private: + // The call stub is used to call Java from C + static void call_stub( + JavaCallWrapper *call_wrapper, + intptr_t* result, + BasicType result_type, + methodOop method, + address entry_point, + intptr_t* parameters, + int parameter_words, + TRAPS) { + JavaThread *thread = (JavaThread *) THREAD; + ZeroStack *stack = thread->zero_stack(); + + // Make sure we have no pending exceptions + assert(!HAS_PENDING_EXCEPTION, "call_stub called with pending exception"); + + // Set up the stack if necessary + bool stack_needs_teardown = false; + if (stack->needs_setup()) { + size_t stack_used = thread->stack_base() - (address) &stack_used; + size_t stack_free = thread->stack_size() - stack_used; + size_t zero_stack_size = align_size_down(stack_free / 2, wordSize); + + stack->setup(alloca(zero_stack_size), zero_stack_size); + stack_needs_teardown = true; + } + + // Allocate and initialize our frame + thread->push_zero_frame( + EntryFrame::build(stack, parameters, parameter_words, call_wrapper)); + + // Make the call + Interpreter::invoke_method(method, entry_point, THREAD); + + // Store result depending on type + if (!HAS_PENDING_EXCEPTION) { + switch (result_type) { + case T_INT: + *(jint *) result = *(jint *) stack->sp(); + break; + case T_LONG: + *(jlong *) result = *(jlong *) stack->sp(); + break; + case T_FLOAT: + *(jfloat *) result = *(jfloat *) stack->sp(); + break; + case T_DOUBLE: + *(jdouble *) result = *(jdouble *) stack->sp(); + break; + case T_OBJECT: + *(oop *) result = *(oop *) stack->sp(); + break; + default: + ShouldNotReachHere(); + } + } + + // Unwind our frame + thread->pop_zero_frame(); + + // Tear down the stack if necessary + if (stack_needs_teardown) + stack->teardown(); + } + + // These stubs get called from some dumb test routine. + // I'll write them properly when they're called from + // something that's actually doing something. + static void fake_arraycopy_stub(address src, address dst, int count) { + assert(count == 0, "huh?"); + } + + void generate_arraycopy_stubs() { + // Call the conjoint generation methods immediately after + // the disjoint ones so that short branches from the former + // to the latter can be generated. + StubRoutines::_jbyte_disjoint_arraycopy = (address) fake_arraycopy_stub; + StubRoutines::_jbyte_arraycopy = (address) fake_arraycopy_stub; + + StubRoutines::_jshort_disjoint_arraycopy = (address) fake_arraycopy_stub; + StubRoutines::_jshort_arraycopy = (address) fake_arraycopy_stub; + + StubRoutines::_jint_disjoint_arraycopy = (address) fake_arraycopy_stub; + StubRoutines::_jint_arraycopy = (address) fake_arraycopy_stub; + + StubRoutines::_jlong_disjoint_arraycopy = (address) fake_arraycopy_stub; + StubRoutines::_jlong_arraycopy = (address) fake_arraycopy_stub; + + StubRoutines::_oop_disjoint_arraycopy = ShouldNotCallThisStub(); + StubRoutines::_oop_arraycopy = ShouldNotCallThisStub(); + + StubRoutines::_checkcast_arraycopy = ShouldNotCallThisStub(); + StubRoutines::_unsafe_arraycopy = ShouldNotCallThisStub(); + StubRoutines::_generic_arraycopy = ShouldNotCallThisStub(); + + // We don't generate specialized code for HeapWord-aligned source + // arrays, so just use the code we've already generated + StubRoutines::_arrayof_jbyte_disjoint_arraycopy = + StubRoutines::_jbyte_disjoint_arraycopy; + StubRoutines::_arrayof_jbyte_arraycopy = + StubRoutines::_jbyte_arraycopy; + + StubRoutines::_arrayof_jshort_disjoint_arraycopy = + StubRoutines::_jshort_disjoint_arraycopy; + StubRoutines::_arrayof_jshort_arraycopy = + StubRoutines::_jshort_arraycopy; + + StubRoutines::_arrayof_jint_disjoint_arraycopy = + StubRoutines::_jint_disjoint_arraycopy; + StubRoutines::_arrayof_jint_arraycopy = + StubRoutines::_jint_arraycopy; + + StubRoutines::_arrayof_jlong_disjoint_arraycopy = + StubRoutines::_jlong_disjoint_arraycopy; + StubRoutines::_arrayof_jlong_arraycopy = + StubRoutines::_jlong_arraycopy; + + StubRoutines::_arrayof_oop_disjoint_arraycopy = + StubRoutines::_oop_disjoint_arraycopy; + StubRoutines::_arrayof_oop_arraycopy = + StubRoutines::_oop_arraycopy; + } + + void generate_initial() { + // Generates all stubs and initializes the entry points + + // entry points that exist in all platforms Note: This is code + // that could be shared among different platforms - however the + // benefit seems to be smaller than the disadvantage of having a + // much more complicated generator structure. See also comment in + // stubRoutines.hpp. + + StubRoutines::_forward_exception_entry = ShouldNotCallThisStub(); + StubRoutines::_call_stub_entry = (address) call_stub; + StubRoutines::_catch_exception_entry = ShouldNotCallThisStub(); + + // atomic calls + StubRoutines::_atomic_xchg_entry = ShouldNotCallThisStub(); + StubRoutines::_atomic_xchg_ptr_entry = ShouldNotCallThisStub(); + StubRoutines::_atomic_cmpxchg_entry = ShouldNotCallThisStub(); + StubRoutines::_atomic_cmpxchg_ptr_entry = ShouldNotCallThisStub(); + StubRoutines::_atomic_cmpxchg_long_entry = ShouldNotCallThisStub(); + StubRoutines::_atomic_add_entry = ShouldNotCallThisStub(); + StubRoutines::_atomic_add_ptr_entry = ShouldNotCallThisStub(); + StubRoutines::_fence_entry = ShouldNotCallThisStub(); + + // amd64 does this here, sparc does it in generate_all() + StubRoutines::_handler_for_unsafe_access_entry = + ShouldNotCallThisStub(); + } + + void generate_all() { + // Generates all stubs and initializes the entry points + + // These entry points require SharedInfo::stack0 to be set up in + // non-core builds and need to be relocatable, so they each + // fabricate a RuntimeStub internally. + StubRoutines::_throw_AbstractMethodError_entry = + ShouldNotCallThisStub(); + + StubRoutines::_throw_ArithmeticException_entry = + ShouldNotCallThisStub(); + + StubRoutines::_throw_NullPointerException_entry = + ShouldNotCallThisStub(); + + StubRoutines::_throw_NullPointerException_at_call_entry = + ShouldNotCallThisStub(); + + StubRoutines::_throw_StackOverflowError_entry = + ShouldNotCallThisStub(); + + // support for verify_oop (must happen after universe_init) + StubRoutines::_verify_oop_subroutine_entry = + ShouldNotCallThisStub(); + + // arraycopy stubs used by compilers + generate_arraycopy_stubs(); + } + + public: + StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) { + if (all) { + generate_all(); + } else { + generate_initial(); + } + } +}; + +void StubGenerator_generate(CodeBuffer* code, bool all) { + StubGenerator g(code, all); +} + +EntryFrame *EntryFrame::build(ZeroStack* stack, + const intptr_t* parameters, + int parameter_words, + JavaCallWrapper* call_wrapper) { + if (header_words + parameter_words > stack->available_words()) { + Unimplemented(); + } + + stack->push(0); // next_frame, filled in later + intptr_t *fp = stack->sp(); + assert(fp - stack->sp() == next_frame_off, "should be"); + + stack->push(ENTRY_FRAME); + assert(fp - stack->sp() == frame_type_off, "should be"); + + stack->push((intptr_t) call_wrapper); + assert(fp - stack->sp() == call_wrapper_off, "should be"); + + for (int i = 0; i < parameter_words; i++) + stack->push(parameters[i]); + + return (EntryFrame *) fp; +}