Mercurial > hg > truffle
diff src/cpu/ppc/vm/relocInfo_ppc.cpp @ 14408:ec28f9c041ff
8019972: PPC64 (part 9): platform files for interpreter only VM.
Summary: With this change the HotSpot core build works on Linux/PPC64. The VM succesfully executes simple test programs.
Reviewed-by: kvn
author | goetz |
---|---|
date | Fri, 02 Aug 2013 16:46:45 +0200 |
parents | |
children | 7687c56b6693 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/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) { +}