Mon, 11 Oct 2010 04:18:58 -0700
6829194: JSR 292 needs to support compressed oops
Reviewed-by: kvn, jrose
duke@435 | 1 | /* |
trims@1907 | 2 | * Copyright (c) 1998, 2009, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | # include "incls/_precompiled.incl" |
duke@435 | 26 | # include "incls/_relocInfo_sparc.cpp.incl" |
duke@435 | 27 | |
duke@435 | 28 | void Relocation::pd_set_data_value(address x, intptr_t o) { |
duke@435 | 29 | NativeInstruction* ip = nativeInstruction_at(addr()); |
duke@435 | 30 | jint inst = ip->long_at(0); |
duke@435 | 31 | assert(inst != NativeInstruction::illegal_instruction(), "no breakpoint"); |
duke@435 | 32 | switch (Assembler::inv_op(inst)) { |
duke@435 | 33 | |
duke@435 | 34 | case Assembler::ldst_op: |
duke@435 | 35 | #ifdef ASSERT |
duke@435 | 36 | switch (Assembler::inv_op3(inst)) { |
duke@435 | 37 | case Assembler::lduw_op3: |
duke@435 | 38 | case Assembler::ldub_op3: |
duke@435 | 39 | case Assembler::lduh_op3: |
duke@435 | 40 | case Assembler::ldd_op3: |
duke@435 | 41 | case Assembler::ldsw_op3: |
duke@435 | 42 | case Assembler::ldsb_op3: |
duke@435 | 43 | case Assembler::ldsh_op3: |
duke@435 | 44 | case Assembler::ldx_op3: |
duke@435 | 45 | case Assembler::ldf_op3: |
duke@435 | 46 | case Assembler::lddf_op3: |
duke@435 | 47 | case Assembler::stw_op3: |
duke@435 | 48 | case Assembler::stb_op3: |
duke@435 | 49 | case Assembler::sth_op3: |
duke@435 | 50 | case Assembler::std_op3: |
duke@435 | 51 | case Assembler::stx_op3: |
duke@435 | 52 | case Assembler::stf_op3: |
duke@435 | 53 | case Assembler::stdf_op3: |
duke@435 | 54 | case Assembler::casa_op3: |
duke@435 | 55 | case Assembler::casxa_op3: |
duke@435 | 56 | break; |
duke@435 | 57 | default: |
duke@435 | 58 | ShouldNotReachHere(); |
duke@435 | 59 | } |
duke@435 | 60 | goto do_non_sethi; |
duke@435 | 61 | #endif |
duke@435 | 62 | |
duke@435 | 63 | case Assembler::arith_op: |
duke@435 | 64 | #ifdef ASSERT |
duke@435 | 65 | switch (Assembler::inv_op3(inst)) { |
duke@435 | 66 | case Assembler::or_op3: |
duke@435 | 67 | case Assembler::add_op3: |
duke@435 | 68 | case Assembler::jmpl_op3: |
duke@435 | 69 | break; |
duke@435 | 70 | default: |
duke@435 | 71 | ShouldNotReachHere(); |
duke@435 | 72 | } |
duke@435 | 73 | do_non_sethi:; |
duke@435 | 74 | #endif |
duke@435 | 75 | { |
duke@435 | 76 | guarantee(Assembler::inv_immed(inst), "must have a simm13 field"); |
duke@435 | 77 | int simm13 = Assembler::low10((intptr_t)x) + o; |
duke@435 | 78 | guarantee(Assembler::is_simm13(simm13), "offset can't overflow simm13"); |
duke@435 | 79 | inst &= ~Assembler::simm( -1, 13); |
duke@435 | 80 | inst |= Assembler::simm(simm13, 13); |
duke@435 | 81 | ip->set_long_at(0, inst); |
duke@435 | 82 | } |
duke@435 | 83 | break; |
duke@435 | 84 | |
duke@435 | 85 | case Assembler::branch_op: |
duke@435 | 86 | { |
duke@435 | 87 | #ifdef _LP64 |
duke@435 | 88 | jint inst2; |
duke@435 | 89 | guarantee(Assembler::inv_op2(inst)==Assembler::sethi_op2, "must be sethi"); |
kvn@599 | 90 | if (format() != 0) { |
kvn@599 | 91 | assert(type() == relocInfo::oop_type, "only narrow oops case"); |
kvn@599 | 92 | jint np = oopDesc::encode_heap_oop((oop)x); |
kvn@599 | 93 | inst &= ~Assembler::hi22(-1); |
kvn@599 | 94 | inst |= Assembler::hi22((intptr_t)np); |
kvn@599 | 95 | ip->set_long_at(0, inst); |
kvn@599 | 96 | inst2 = ip->long_at( NativeInstruction::nop_instruction_size ); |
kvn@599 | 97 | guarantee(Assembler::inv_op(inst2)==Assembler::arith_op, "arith op"); |
kvn@599 | 98 | ip->set_long_at(NativeInstruction::nop_instruction_size, ip->set_data32_simm13( inst2, (intptr_t)np)); |
kvn@599 | 99 | break; |
kvn@599 | 100 | } |
duke@435 | 101 | ip->set_data64_sethi( ip->addr_at(0), (intptr_t)x ); |
duke@435 | 102 | #else |
duke@435 | 103 | guarantee(Assembler::inv_op2(inst)==Assembler::sethi_op2, "must be sethi"); |
duke@435 | 104 | inst &= ~Assembler::hi22( -1); |
duke@435 | 105 | inst |= Assembler::hi22((intptr_t)x); |
duke@435 | 106 | // (ignore offset; it doesn't play into the sethi) |
duke@435 | 107 | ip->set_long_at(0, inst); |
duke@435 | 108 | #endif |
duke@435 | 109 | } |
duke@435 | 110 | break; |
duke@435 | 111 | |
duke@435 | 112 | default: |
duke@435 | 113 | guarantee(false, "instruction must perform arithmetic or memory access"); |
duke@435 | 114 | } |
duke@435 | 115 | } |
duke@435 | 116 | |
duke@435 | 117 | |
duke@435 | 118 | address Relocation::pd_call_destination(address orig_addr) { |
duke@435 | 119 | intptr_t adj = 0; |
duke@435 | 120 | if (orig_addr != NULL) { |
duke@435 | 121 | // We just moved this call instruction from orig_addr to addr(). |
duke@435 | 122 | // This means its target will appear to have grown by addr() - orig_addr. |
duke@435 | 123 | adj = -( addr() - orig_addr ); |
duke@435 | 124 | } |
duke@435 | 125 | if (NativeCall::is_call_at(addr())) { |
duke@435 | 126 | NativeCall* call = nativeCall_at(addr()); |
duke@435 | 127 | return call->destination() + adj; |
duke@435 | 128 | } |
duke@435 | 129 | if (NativeFarCall::is_call_at(addr())) { |
duke@435 | 130 | NativeFarCall* call = nativeFarCall_at(addr()); |
duke@435 | 131 | return call->destination() + adj; |
duke@435 | 132 | } |
duke@435 | 133 | // Special case: Patchable branch local to the code cache. |
duke@435 | 134 | // This will break badly if the code cache grows larger than a few Mb. |
duke@435 | 135 | NativeGeneralJump* br = nativeGeneralJump_at(addr()); |
duke@435 | 136 | return br->jump_destination() + adj; |
duke@435 | 137 | } |
duke@435 | 138 | |
duke@435 | 139 | |
duke@435 | 140 | void Relocation::pd_set_call_destination(address x) { |
duke@435 | 141 | if (NativeCall::is_call_at(addr())) { |
duke@435 | 142 | NativeCall* call = nativeCall_at(addr()); |
duke@435 | 143 | call->set_destination(x); |
duke@435 | 144 | return; |
duke@435 | 145 | } |
duke@435 | 146 | if (NativeFarCall::is_call_at(addr())) { |
duke@435 | 147 | NativeFarCall* call = nativeFarCall_at(addr()); |
duke@435 | 148 | call->set_destination(x); |
duke@435 | 149 | return; |
duke@435 | 150 | } |
duke@435 | 151 | // Special case: Patchable branch local to the code cache. |
duke@435 | 152 | // This will break badly if the code cache grows larger than a few Mb. |
duke@435 | 153 | NativeGeneralJump* br = nativeGeneralJump_at(addr()); |
duke@435 | 154 | br->set_jump_destination(x); |
duke@435 | 155 | } |
duke@435 | 156 | |
duke@435 | 157 | |
duke@435 | 158 | address* Relocation::pd_address_in_code() { |
duke@435 | 159 | // SPARC never embeds addresses in code, at present. |
duke@435 | 160 | //assert(type() == relocInfo::oop_type, "only oops are inlined at present"); |
duke@435 | 161 | return (address*)addr(); |
duke@435 | 162 | } |
duke@435 | 163 | |
duke@435 | 164 | |
duke@435 | 165 | address Relocation::pd_get_address_from_code() { |
duke@435 | 166 | // SPARC never embeds addresses in code, at present. |
duke@435 | 167 | //assert(type() == relocInfo::oop_type, "only oops are inlined at present"); |
duke@435 | 168 | return *(address*)addr(); |
duke@435 | 169 | } |
duke@435 | 170 | |
duke@435 | 171 | |
duke@435 | 172 | int Relocation::pd_breakpoint_size() { |
duke@435 | 173 | // minimum breakpoint size, in short words |
duke@435 | 174 | return NativeIllegalInstruction::instruction_size / sizeof(short); |
duke@435 | 175 | } |
duke@435 | 176 | |
duke@435 | 177 | void Relocation::pd_swap_in_breakpoint(address x, short* instrs, int instrlen) { |
duke@435 | 178 | Untested("pd_swap_in_breakpoint"); |
duke@435 | 179 | // %%% probably do not need a general instrlen; just use the trap size |
duke@435 | 180 | if (instrs != NULL) { |
duke@435 | 181 | assert(instrlen * sizeof(short) == NativeIllegalInstruction::instruction_size, "enough instrlen in reloc. data"); |
duke@435 | 182 | for (int i = 0; i < instrlen; i++) { |
duke@435 | 183 | instrs[i] = ((short*)x)[i]; |
duke@435 | 184 | } |
duke@435 | 185 | } |
duke@435 | 186 | NativeIllegalInstruction::insert(x); |
duke@435 | 187 | } |
duke@435 | 188 | |
duke@435 | 189 | |
duke@435 | 190 | void Relocation::pd_swap_out_breakpoint(address x, short* instrs, int instrlen) { |
duke@435 | 191 | Untested("pd_swap_out_breakpoint"); |
duke@435 | 192 | assert(instrlen * sizeof(short) == sizeof(int), "enough buf"); |
duke@435 | 193 | union { int l; short s[1]; } u; |
duke@435 | 194 | for (int i = 0; i < instrlen; i++) { |
duke@435 | 195 | u.s[i] = instrs[i]; |
duke@435 | 196 | } |
duke@435 | 197 | NativeInstruction* ni = nativeInstruction_at(x); |
duke@435 | 198 | ni->set_long_at(0, u.l); |
duke@435 | 199 | } |
never@739 | 200 | |
never@739 | 201 | void poll_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) { |
never@739 | 202 | } |
never@739 | 203 | |
never@739 | 204 | void poll_return_Relocation::fix_relocation_after_move(const CodeBuffer* src, CodeBuffer* dest) { |
never@739 | 205 | } |