1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/cpu/sparc/vm/relocInfo_sparc.cpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,195 @@
1.4 +/*
1.5 + * Copyright 1998-2005 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +# include "incls/_precompiled.incl"
1.29 +# include "incls/_relocInfo_sparc.cpp.incl"
1.30 +
1.31 +void Relocation::pd_set_data_value(address x, intptr_t o) {
1.32 + NativeInstruction* ip = nativeInstruction_at(addr());
1.33 + jint inst = ip->long_at(0);
1.34 + assert(inst != NativeInstruction::illegal_instruction(), "no breakpoint");
1.35 + switch (Assembler::inv_op(inst)) {
1.36 +
1.37 + case Assembler::ldst_op:
1.38 + #ifdef ASSERT
1.39 + switch (Assembler::inv_op3(inst)) {
1.40 + case Assembler::lduw_op3:
1.41 + case Assembler::ldub_op3:
1.42 + case Assembler::lduh_op3:
1.43 + case Assembler::ldd_op3:
1.44 + case Assembler::ldsw_op3:
1.45 + case Assembler::ldsb_op3:
1.46 + case Assembler::ldsh_op3:
1.47 + case Assembler::ldx_op3:
1.48 + case Assembler::ldf_op3:
1.49 + case Assembler::lddf_op3:
1.50 + case Assembler::stw_op3:
1.51 + case Assembler::stb_op3:
1.52 + case Assembler::sth_op3:
1.53 + case Assembler::std_op3:
1.54 + case Assembler::stx_op3:
1.55 + case Assembler::stf_op3:
1.56 + case Assembler::stdf_op3:
1.57 + case Assembler::casa_op3:
1.58 + case Assembler::casxa_op3:
1.59 + break;
1.60 + default:
1.61 + ShouldNotReachHere();
1.62 + }
1.63 + goto do_non_sethi;
1.64 + #endif
1.65 +
1.66 + case Assembler::arith_op:
1.67 + #ifdef ASSERT
1.68 + switch (Assembler::inv_op3(inst)) {
1.69 + case Assembler::or_op3:
1.70 + case Assembler::add_op3:
1.71 + case Assembler::jmpl_op3:
1.72 + break;
1.73 + default:
1.74 + ShouldNotReachHere();
1.75 + }
1.76 + do_non_sethi:;
1.77 + #endif
1.78 + {
1.79 + guarantee(Assembler::inv_immed(inst), "must have a simm13 field");
1.80 + int simm13 = Assembler::low10((intptr_t)x) + o;
1.81 + guarantee(Assembler::is_simm13(simm13), "offset can't overflow simm13");
1.82 + inst &= ~Assembler::simm( -1, 13);
1.83 + inst |= Assembler::simm(simm13, 13);
1.84 + ip->set_long_at(0, inst);
1.85 + }
1.86 + break;
1.87 +
1.88 + case Assembler::branch_op:
1.89 + {
1.90 +#ifdef _LP64
1.91 + jint inst2;
1.92 + guarantee(Assembler::inv_op2(inst)==Assembler::sethi_op2, "must be sethi");
1.93 + ip->set_data64_sethi( ip->addr_at(0), (intptr_t)x );
1.94 +#ifdef COMPILER2
1.95 + // [RGV] Someone must have missed putting in a reloc entry for the
1.96 + // add in compiler2.
1.97 + inst2 = ip->long_at( NativeMovConstReg::add_offset );
1.98 + guarantee(Assembler::inv_op(inst2)==Assembler::arith_op, "arith op");
1.99 + ip->set_long_at(NativeMovConstReg::add_offset,ip->set_data32_simm13( inst2, (intptr_t)x+o));
1.100 +#endif
1.101 +#else
1.102 + guarantee(Assembler::inv_op2(inst)==Assembler::sethi_op2, "must be sethi");
1.103 + inst &= ~Assembler::hi22( -1);
1.104 + inst |= Assembler::hi22((intptr_t)x);
1.105 + // (ignore offset; it doesn't play into the sethi)
1.106 + ip->set_long_at(0, inst);
1.107 +#endif
1.108 + }
1.109 + break;
1.110 +
1.111 + default:
1.112 + guarantee(false, "instruction must perform arithmetic or memory access");
1.113 + }
1.114 +}
1.115 +
1.116 +
1.117 +address Relocation::pd_call_destination(address orig_addr) {
1.118 + intptr_t adj = 0;
1.119 + if (orig_addr != NULL) {
1.120 + // We just moved this call instruction from orig_addr to addr().
1.121 + // This means its target will appear to have grown by addr() - orig_addr.
1.122 + adj = -( addr() - orig_addr );
1.123 + }
1.124 + if (NativeCall::is_call_at(addr())) {
1.125 + NativeCall* call = nativeCall_at(addr());
1.126 + return call->destination() + adj;
1.127 + }
1.128 + if (NativeFarCall::is_call_at(addr())) {
1.129 + NativeFarCall* call = nativeFarCall_at(addr());
1.130 + return call->destination() + adj;
1.131 + }
1.132 + // Special case: Patchable branch local to the code cache.
1.133 + // This will break badly if the code cache grows larger than a few Mb.
1.134 + NativeGeneralJump* br = nativeGeneralJump_at(addr());
1.135 + return br->jump_destination() + adj;
1.136 +}
1.137 +
1.138 +
1.139 +void Relocation::pd_set_call_destination(address x) {
1.140 + if (NativeCall::is_call_at(addr())) {
1.141 + NativeCall* call = nativeCall_at(addr());
1.142 + call->set_destination(x);
1.143 + return;
1.144 + }
1.145 + if (NativeFarCall::is_call_at(addr())) {
1.146 + NativeFarCall* call = nativeFarCall_at(addr());
1.147 + call->set_destination(x);
1.148 + return;
1.149 + }
1.150 + // Special case: Patchable branch local to the code cache.
1.151 + // This will break badly if the code cache grows larger than a few Mb.
1.152 + NativeGeneralJump* br = nativeGeneralJump_at(addr());
1.153 + br->set_jump_destination(x);
1.154 +}
1.155 +
1.156 +
1.157 +address* Relocation::pd_address_in_code() {
1.158 + // SPARC never embeds addresses in code, at present.
1.159 + //assert(type() == relocInfo::oop_type, "only oops are inlined at present");
1.160 + return (address*)addr();
1.161 +}
1.162 +
1.163 +
1.164 +address Relocation::pd_get_address_from_code() {
1.165 + // SPARC never embeds addresses in code, at present.
1.166 + //assert(type() == relocInfo::oop_type, "only oops are inlined at present");
1.167 + return *(address*)addr();
1.168 +}
1.169 +
1.170 +
1.171 +int Relocation::pd_breakpoint_size() {
1.172 + // minimum breakpoint size, in short words
1.173 + return NativeIllegalInstruction::instruction_size / sizeof(short);
1.174 +}
1.175 +
1.176 +void Relocation::pd_swap_in_breakpoint(address x, short* instrs, int instrlen) {
1.177 + Untested("pd_swap_in_breakpoint");
1.178 + // %%% probably do not need a general instrlen; just use the trap size
1.179 + if (instrs != NULL) {
1.180 + assert(instrlen * sizeof(short) == NativeIllegalInstruction::instruction_size, "enough instrlen in reloc. data");
1.181 + for (int i = 0; i < instrlen; i++) {
1.182 + instrs[i] = ((short*)x)[i];
1.183 + }
1.184 + }
1.185 + NativeIllegalInstruction::insert(x);
1.186 +}
1.187 +
1.188 +
1.189 +void Relocation::pd_swap_out_breakpoint(address x, short* instrs, int instrlen) {
1.190 + Untested("pd_swap_out_breakpoint");
1.191 + assert(instrlen * sizeof(short) == sizeof(int), "enough buf");
1.192 + union { int l; short s[1]; } u;
1.193 + for (int i = 0; i < instrlen; i++) {
1.194 + u.s[i] = instrs[i];
1.195 + }
1.196 + NativeInstruction* ni = nativeInstruction_at(x);
1.197 + ni->set_long_at(0, u.l);
1.198 +}
