Mercurial > hg > truffle
comparison src/cpu/sparc/vm/relocInfo_sparc.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c436414a719e |
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1 /* | |
2 * Copyright 1998-2005 Sun Microsystems, Inc. All Rights Reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_relocInfo_sparc.cpp.incl" | |
27 | |
28 void Relocation::pd_set_data_value(address x, intptr_t o) { | |
29 NativeInstruction* ip = nativeInstruction_at(addr()); | |
30 jint inst = ip->long_at(0); | |
31 assert(inst != NativeInstruction::illegal_instruction(), "no breakpoint"); | |
32 switch (Assembler::inv_op(inst)) { | |
33 | |
34 case Assembler::ldst_op: | |
35 #ifdef ASSERT | |
36 switch (Assembler::inv_op3(inst)) { | |
37 case Assembler::lduw_op3: | |
38 case Assembler::ldub_op3: | |
39 case Assembler::lduh_op3: | |
40 case Assembler::ldd_op3: | |
41 case Assembler::ldsw_op3: | |
42 case Assembler::ldsb_op3: | |
43 case Assembler::ldsh_op3: | |
44 case Assembler::ldx_op3: | |
45 case Assembler::ldf_op3: | |
46 case Assembler::lddf_op3: | |
47 case Assembler::stw_op3: | |
48 case Assembler::stb_op3: | |
49 case Assembler::sth_op3: | |
50 case Assembler::std_op3: | |
51 case Assembler::stx_op3: | |
52 case Assembler::stf_op3: | |
53 case Assembler::stdf_op3: | |
54 case Assembler::casa_op3: | |
55 case Assembler::casxa_op3: | |
56 break; | |
57 default: | |
58 ShouldNotReachHere(); | |
59 } | |
60 goto do_non_sethi; | |
61 #endif | |
62 | |
63 case Assembler::arith_op: | |
64 #ifdef ASSERT | |
65 switch (Assembler::inv_op3(inst)) { | |
66 case Assembler::or_op3: | |
67 case Assembler::add_op3: | |
68 case Assembler::jmpl_op3: | |
69 break; | |
70 default: | |
71 ShouldNotReachHere(); | |
72 } | |
73 do_non_sethi:; | |
74 #endif | |
75 { | |
76 guarantee(Assembler::inv_immed(inst), "must have a simm13 field"); | |
77 int simm13 = Assembler::low10((intptr_t)x) + o; | |
78 guarantee(Assembler::is_simm13(simm13), "offset can't overflow simm13"); | |
79 inst &= ~Assembler::simm( -1, 13); | |
80 inst |= Assembler::simm(simm13, 13); | |
81 ip->set_long_at(0, inst); | |
82 } | |
83 break; | |
84 | |
85 case Assembler::branch_op: | |
86 { | |
87 #ifdef _LP64 | |
88 jint inst2; | |
89 guarantee(Assembler::inv_op2(inst)==Assembler::sethi_op2, "must be sethi"); | |
90 ip->set_data64_sethi( ip->addr_at(0), (intptr_t)x ); | |
91 #ifdef COMPILER2 | |
92 // [RGV] Someone must have missed putting in a reloc entry for the | |
93 // add in compiler2. | |
94 inst2 = ip->long_at( NativeMovConstReg::add_offset ); | |
95 guarantee(Assembler::inv_op(inst2)==Assembler::arith_op, "arith op"); | |
96 ip->set_long_at(NativeMovConstReg::add_offset,ip->set_data32_simm13( inst2, (intptr_t)x+o)); | |
97 #endif | |
98 #else | |
99 guarantee(Assembler::inv_op2(inst)==Assembler::sethi_op2, "must be sethi"); | |
100 inst &= ~Assembler::hi22( -1); | |
101 inst |= Assembler::hi22((intptr_t)x); | |
102 // (ignore offset; it doesn't play into the sethi) | |
103 ip->set_long_at(0, inst); | |
104 #endif | |
105 } | |
106 break; | |
107 | |
108 default: | |
109 guarantee(false, "instruction must perform arithmetic or memory access"); | |
110 } | |
111 } | |
112 | |
113 | |
114 address Relocation::pd_call_destination(address orig_addr) { | |
115 intptr_t adj = 0; | |
116 if (orig_addr != NULL) { | |
117 // We just moved this call instruction from orig_addr to addr(). | |
118 // This means its target will appear to have grown by addr() - orig_addr. | |
119 adj = -( addr() - orig_addr ); | |
120 } | |
121 if (NativeCall::is_call_at(addr())) { | |
122 NativeCall* call = nativeCall_at(addr()); | |
123 return call->destination() + adj; | |
124 } | |
125 if (NativeFarCall::is_call_at(addr())) { | |
126 NativeFarCall* call = nativeFarCall_at(addr()); | |
127 return call->destination() + adj; | |
128 } | |
129 // Special case: Patchable branch local to the code cache. | |
130 // This will break badly if the code cache grows larger than a few Mb. | |
131 NativeGeneralJump* br = nativeGeneralJump_at(addr()); | |
132 return br->jump_destination() + adj; | |
133 } | |
134 | |
135 | |
136 void Relocation::pd_set_call_destination(address x) { | |
137 if (NativeCall::is_call_at(addr())) { | |
138 NativeCall* call = nativeCall_at(addr()); | |
139 call->set_destination(x); | |
140 return; | |
141 } | |
142 if (NativeFarCall::is_call_at(addr())) { | |
143 NativeFarCall* call = nativeFarCall_at(addr()); | |
144 call->set_destination(x); | |
145 return; | |
146 } | |
147 // Special case: Patchable branch local to the code cache. | |
148 // This will break badly if the code cache grows larger than a few Mb. | |
149 NativeGeneralJump* br = nativeGeneralJump_at(addr()); | |
150 br->set_jump_destination(x); | |
151 } | |
152 | |
153 | |
154 address* Relocation::pd_address_in_code() { | |
155 // SPARC never embeds addresses in code, at present. | |
156 //assert(type() == relocInfo::oop_type, "only oops are inlined at present"); | |
157 return (address*)addr(); | |
158 } | |
159 | |
160 | |
161 address Relocation::pd_get_address_from_code() { | |
162 // SPARC never embeds addresses in code, at present. | |
163 //assert(type() == relocInfo::oop_type, "only oops are inlined at present"); | |
164 return *(address*)addr(); | |
165 } | |
166 | |
167 | |
168 int Relocation::pd_breakpoint_size() { | |
169 // minimum breakpoint size, in short words | |
170 return NativeIllegalInstruction::instruction_size / sizeof(short); | |
171 } | |
172 | |
173 void Relocation::pd_swap_in_breakpoint(address x, short* instrs, int instrlen) { | |
174 Untested("pd_swap_in_breakpoint"); | |
175 // %%% probably do not need a general instrlen; just use the trap size | |
176 if (instrs != NULL) { | |
177 assert(instrlen * sizeof(short) == NativeIllegalInstruction::instruction_size, "enough instrlen in reloc. data"); | |
178 for (int i = 0; i < instrlen; i++) { | |
179 instrs[i] = ((short*)x)[i]; | |
180 } | |
181 } | |
182 NativeIllegalInstruction::insert(x); | |
183 } | |
184 | |
185 | |
186 void Relocation::pd_swap_out_breakpoint(address x, short* instrs, int instrlen) { | |
187 Untested("pd_swap_out_breakpoint"); | |
188 assert(instrlen * sizeof(short) == sizeof(int), "enough buf"); | |
189 union { int l; short s[1]; } u; | |
190 for (int i = 0; i < instrlen; i++) { | |
191 u.s[i] = instrs[i]; | |
192 } | |
193 NativeInstruction* ni = nativeInstruction_at(x); | |
194 ni->set_long_at(0, u.l); | |
195 } |