--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/ppc/vm/relocInfo_ppc.cpp Fri Aug 02 16:46:45 2013 +0200
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2012, 2013 SAP AG. All rights reserved.
+ * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "asm/assembler.inline.hpp"
+#include "assembler_ppc.inline.hpp"
+#include "code/relocInfo.hpp"
+#include "nativeInst_ppc.hpp"
+#include "oops/oop.inline.hpp"
+#include "runtime/safepoint.hpp"
+
+void Relocation::pd_set_data_value(address x, intptr_t o, bool verify_only) {
+ bool copy_back_to_oop_pool = true; // TODO: PPC port
+ // The following comment is from the declaration of DataRelocation:
+ //
+ // "The "o" (displacement) argument is relevant only to split relocations
+ // on RISC machines. In some CPUs (SPARC), the set-hi and set-lo ins'ns
+ // can encode more than 32 bits between them. This allows compilers to
+ // share set-hi instructions between addresses that differ by a small
+ // offset (e.g., different static variables in the same class).
+ // On such machines, the "x" argument to set_value on all set-lo
+ // instructions must be the same as the "x" argument for the
+ // corresponding set-hi instructions. The "o" arguments for the
+ // set-hi instructions are ignored, and must not affect the high-half
+ // immediate constant. The "o" arguments for the set-lo instructions are
+ // added into the low-half immediate constant, and must not overflow it."
+ //
+ // Currently we don't support splitting of relocations, so o must be
+ // zero:
+ assert(o == 0, "tried to split relocations");
+
+ if (!verify_only) {
+ if (format() != 1) {
+ nativeMovConstReg_at(addr())->set_data_plain(((intptr_t)x), code());
+ } else {
+ assert(type() == relocInfo::oop_type || type() == relocInfo::metadata_type,
+ "how to encode else?");
+ narrowOop no = (type() == relocInfo::oop_type) ?
+ oopDesc::encode_heap_oop((oop)x) : oopDesc::encode_klass((Klass*)x);
+ nativeMovConstReg_at(addr())->set_narrow_oop(no, code());
+ }
+ } else {
+ assert((address) (nativeMovConstReg_at(addr())->data()) == x, "data must match");
+ }
+}
+
+address Relocation::pd_call_destination(address orig_addr) {
+ intptr_t adj = 0;
+ address inst_loc = addr();
+
+ if (orig_addr != NULL) {
+ // We just moved this call instruction from orig_addr to addr().
+ // This means its target will appear to have grown by addr() - orig_addr.
+ adj = -(inst_loc - orig_addr);
+ }
+ if (NativeFarCall::is_far_call_at(inst_loc)) {
+ NativeFarCall* call = nativeFarCall_at(inst_loc);
+ return call->destination() + (intptr_t)(call->is_pcrelative() ? adj : 0);
+ } else if (NativeJump::is_jump_at(inst_loc)) {
+ NativeJump* jump = nativeJump_at(inst_loc);
+ return jump->jump_destination() + (intptr_t)(jump->is_pcrelative() ? adj : 0);
+ } else if (NativeConditionalFarBranch::is_conditional_far_branch_at(inst_loc)) {
+ NativeConditionalFarBranch* branch = NativeConditionalFarBranch_at(inst_loc);
+ return branch->branch_destination();
+ } else {
+ // There are two instructions at the beginning of a stub, therefore we
+ // load at orig_addr + 8.
+ orig_addr = nativeCall_at(inst_loc)->get_trampoline();
+ if (orig_addr == NULL) {
+ return (address) -1;
+ } else {
+ return (address) nativeMovConstReg_at(orig_addr + 8)->data();
+ }
+ }
+}
+
+void Relocation::pd_set_call_destination(address x) {
+ address inst_loc = addr();
+
+ if (NativeFarCall::is_far_call_at(inst_loc)) {
+ NativeFarCall* call = nativeFarCall_at(inst_loc);
+ call->set_destination(x);
+ } else if (NativeJump::is_jump_at(inst_loc)) {
+ NativeJump* jump= nativeJump_at(inst_loc);
+ jump->set_jump_destination(x);
+ } else if (NativeConditionalFarBranch::is_conditional_far_branch_at(inst_loc)) {
+ NativeConditionalFarBranch* branch = NativeConditionalFarBranch_at(inst_loc);
+ branch->set_branch_destination(x);
+ } else {
+ NativeCall* call = nativeCall_at(inst_loc);
+ call->set_destination_mt_safe(x, false);
+ }
+}
+
+address* Relocation::pd_address_in_code() {
+ ShouldNotReachHere();
+ return 0;
+}
+
+address Relocation::pd_get_address_from_code() {
+ return (address)(nativeMovConstReg_at(addr())->data());
+}
+
+void poll_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {
+}
+
+void poll_return_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) {
+}
+
+void metadata_Relocation::pd_fix_value(address x) {
+}