graal-compiler: src/share/vm/asm/assembler.cpp annotate

annotate src/share/vm/asm/assembler.cpp @ 14909:4ca6dc0799b6

Backout jdk9 merge

author	Gilles Duboscq <duboscq@ssw.jku.at>
date	Tue, 01 Apr 2014 13:57:07 +0200
parents	de6a9e811145
children	89152779163c

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
14909 4ca6dc0799b6 Backout jdk9 merge Gilles Duboscq <duboscq@ssw.jku.at> parents: 14223 diff changeset	2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
0 a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1490 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1490 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1490 diff changeset	21 * questions.
0 a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	25 #include "precompiled.hpp"
7199 cd3d6a6b95d9 8003240: x86: move MacroAssembler into separate file twisti parents: 7198 diff changeset	26 #include "asm/macroAssembler.hpp"
cd3d6a6b95d9 8003240: x86: move MacroAssembler into separate file twisti parents: 7198 diff changeset	27 #include "asm/macroAssembler.inline.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	28 #include "asm/codeBuffer.hpp"
7199 cd3d6a6b95d9 8003240: x86: move MacroAssembler into separate file twisti parents: 7198 diff changeset	29 #include "runtime/atomic.hpp"
cd3d6a6b95d9 8003240: x86: move MacroAssembler into separate file twisti parents: 7198 diff changeset	30 #include "runtime/atomic.inline.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	31 #include "runtime/icache.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	32 #include "runtime/os.hpp"
0 a61af66fc99e Initial load duke parents: diff changeset	33
a61af66fc99e Initial load duke parents: diff changeset	34
a61af66fc99e Initial load duke parents: diff changeset	35 // Implementation of AbstractAssembler
a61af66fc99e Initial load duke parents: diff changeset	36 //
a61af66fc99e Initial load duke parents: diff changeset	37 // The AbstractAssembler is generating code into a CodeBuffer. To make code generation faster,
a61af66fc99e Initial load duke parents: diff changeset	38 // the assembler keeps a copy of the code buffers boundaries & modifies them when
a61af66fc99e Initial load duke parents: diff changeset	39 // emitting bytes rather than using the code buffers accessor functions all the time.
605 98cb887364d3 6810672: Comment typos twisti parents: 380 diff changeset	40 // The code buffer is updated via set_code_end(...) after emitting a whole instruction.
0 a61af66fc99e Initial load duke parents: diff changeset	41
a61af66fc99e Initial load duke parents: diff changeset	42 AbstractAssembler::AbstractAssembler(CodeBuffer* code) {
a61af66fc99e Initial load duke parents: diff changeset	43 if (code == NULL) return;
a61af66fc99e Initial load duke parents: diff changeset	44 CodeSection* cs = code->insts();
a61af66fc99e Initial load duke parents: diff changeset	45 cs->clear_mark(); // new assembler kills old mark
7198 6ab62ad83507 8003195: AbstractAssembler should not store code pointers but use the CodeSection directly twisti parents: 7197 diff changeset	46 if (cs->start() == NULL) {
10161 746b070f5022 8011661: Insufficient memory message says "malloc" when sometimes it should say "mmap" ccheung parents: 8767 diff changeset	47 vm_exit_out_of_memory(0, OOM_MMAP_ERROR, err_msg("CodeCache: no room for %s",
1490 f03d0a26bf83 6888954: argument formatting for assert() and friends jcoomes parents: 844 diff changeset	48 code->name()));
0 a61af66fc99e Initial load duke parents: diff changeset	49 }
7198 6ab62ad83507 8003195: AbstractAssembler should not store code pointers but use the CodeSection directly twisti parents: 7197 diff changeset	50 _code_section = cs;
6ab62ad83507 8003195: AbstractAssembler should not store code pointers but use the CodeSection directly twisti parents: 7197 diff changeset	51 _oop_recorder= code->oop_recorder();
6ab62ad83507 8003195: AbstractAssembler should not store code pointers but use the CodeSection directly twisti parents: 7197 diff changeset	52 DEBUG_ONLY( _short_branch_delta = 0; )
0 a61af66fc99e Initial load duke parents: diff changeset	53 }
a61af66fc99e Initial load duke parents: diff changeset	54
a61af66fc99e Initial load duke parents: diff changeset	55 void AbstractAssembler::set_code_section(CodeSection* cs) {
a61af66fc99e Initial load duke parents: diff changeset	56 assert(cs->outer() == code_section()->outer(), "sanity");
a61af66fc99e Initial load duke parents: diff changeset	57 assert(cs->is_allocated(), "need to pre-allocate this section");
a61af66fc99e Initial load duke parents: diff changeset	58 cs->clear_mark(); // new assembly into this section kills old mark
a61af66fc99e Initial load duke parents: diff changeset	59 _code_section = cs;
a61af66fc99e Initial load duke parents: diff changeset	60 }
a61af66fc99e Initial load duke parents: diff changeset	61
a61af66fc99e Initial load duke parents: diff changeset	62 // Inform CodeBuffer that incoming code and relocation will be for stubs
a61af66fc99e Initial load duke parents: diff changeset	63 address AbstractAssembler::start_a_stub(int required_space) {
a61af66fc99e Initial load duke parents: diff changeset	64 CodeBuffer* cb = code();
a61af66fc99e Initial load duke parents: diff changeset	65 CodeSection* cs = cb->stubs();
a61af66fc99e Initial load duke parents: diff changeset	66 assert(_code_section == cb->insts(), "not in insts?");
a61af66fc99e Initial load duke parents: diff changeset	67 if (cs->maybe_expand_to_ensure_remaining(required_space)
a61af66fc99e Initial load duke parents: diff changeset	68 && cb->blob() == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	69 return NULL;
a61af66fc99e Initial load duke parents: diff changeset	70 }
a61af66fc99e Initial load duke parents: diff changeset	71 set_code_section(cs);
a61af66fc99e Initial load duke parents: diff changeset	72 return pc();
a61af66fc99e Initial load duke parents: diff changeset	73 }
a61af66fc99e Initial load duke parents: diff changeset	74
a61af66fc99e Initial load duke parents: diff changeset	75 // Inform CodeBuffer that incoming code and relocation will be code
a61af66fc99e Initial load duke parents: diff changeset	76 // Should not be called if start_a_stub() returned NULL
a61af66fc99e Initial load duke parents: diff changeset	77 void AbstractAssembler::end_a_stub() {
a61af66fc99e Initial load duke parents: diff changeset	78 assert(_code_section == code()->stubs(), "not in stubs?");
a61af66fc99e Initial load duke parents: diff changeset	79 set_code_section(code()->insts());
a61af66fc99e Initial load duke parents: diff changeset	80 }
a61af66fc99e Initial load duke parents: diff changeset	81
a61af66fc99e Initial load duke parents: diff changeset	82 // Inform CodeBuffer that incoming code and relocation will be for stubs
a61af66fc99e Initial load duke parents: diff changeset	83 address AbstractAssembler::start_a_const(int required_space, int required_align) {
a61af66fc99e Initial load duke parents: diff changeset	84 CodeBuffer* cb = code();
a61af66fc99e Initial load duke parents: diff changeset	85 CodeSection* cs = cb->consts();
7197 1acccb7c0b01 8003850: add support for constants in stub code kvn parents: 6842 diff changeset	86 assert(_code_section == cb->insts() \|\| _code_section == cb->stubs(), "not in insts/stubs?");
0 a61af66fc99e Initial load duke parents: diff changeset	87 address end = cs->end();
a61af66fc99e Initial load duke parents: diff changeset	88 int pad = -(intptr_t)end & (required_align-1);
a61af66fc99e Initial load duke parents: diff changeset	89 if (cs->maybe_expand_to_ensure_remaining(pad + required_space)) {
a61af66fc99e Initial load duke parents: diff changeset	90 if (cb->blob() == NULL) return NULL;
a61af66fc99e Initial load duke parents: diff changeset	91 end = cs->end(); // refresh pointer
a61af66fc99e Initial load duke parents: diff changeset	92 }
a61af66fc99e Initial load duke parents: diff changeset	93 if (pad > 0) {
a61af66fc99e Initial load duke parents: diff changeset	94 while (--pad >= 0) { *end++ = 0; }
a61af66fc99e Initial load duke parents: diff changeset	95 cs->set_end(end);
a61af66fc99e Initial load duke parents: diff changeset	96 }
a61af66fc99e Initial load duke parents: diff changeset	97 set_code_section(cs);
a61af66fc99e Initial load duke parents: diff changeset	98 return end;
a61af66fc99e Initial load duke parents: diff changeset	99 }
a61af66fc99e Initial load duke parents: diff changeset	100
a61af66fc99e Initial load duke parents: diff changeset	101 // Inform CodeBuffer that incoming code and relocation will be code
7197 1acccb7c0b01 8003850: add support for constants in stub code kvn parents: 6842 diff changeset	102 // in section cs (insts or stubs).
1acccb7c0b01 8003850: add support for constants in stub code kvn parents: 6842 diff changeset	103 void AbstractAssembler::end_a_const(CodeSection* cs) {
0 a61af66fc99e Initial load duke parents: diff changeset	104 assert(_code_section == code()->consts(), "not in consts?");
7197 1acccb7c0b01 8003850: add support for constants in stub code kvn parents: 6842 diff changeset	105 set_code_section(cs);
0 a61af66fc99e Initial load duke parents: diff changeset	106 }
a61af66fc99e Initial load duke parents: diff changeset	107
a61af66fc99e Initial load duke parents: diff changeset	108 void AbstractAssembler::flush() {
a61af66fc99e Initial load duke parents: diff changeset	109 ICache::invalidate_range(addr_at(0), offset());
a61af66fc99e Initial load duke parents: diff changeset	110 }
a61af66fc99e Initial load duke parents: diff changeset	111
a61af66fc99e Initial load duke parents: diff changeset	112 void AbstractAssembler::bind(Label& L) {
a61af66fc99e Initial load duke parents: diff changeset	113 if (L.is_bound()) {
a61af66fc99e Initial load duke parents: diff changeset	114 // Assembler can bind a label more than once to the same place.
a61af66fc99e Initial load duke parents: diff changeset	115 guarantee(L.loc() == locator(), "attempt to redefine label");
a61af66fc99e Initial load duke parents: diff changeset	116 return;
a61af66fc99e Initial load duke parents: diff changeset	117 }
a61af66fc99e Initial load duke parents: diff changeset	118 L.bind_loc(locator());
a61af66fc99e Initial load duke parents: diff changeset	119 L.patch_instructions((MacroAssembler*)this);
a61af66fc99e Initial load duke parents: diff changeset	120 }
a61af66fc99e Initial load duke parents: diff changeset	121
a61af66fc99e Initial load duke parents: diff changeset	122 void AbstractAssembler::generate_stack_overflow_check( int frame_size_in_bytes) {
a61af66fc99e Initial load duke parents: diff changeset	123 if (UseStackBanging) {
a61af66fc99e Initial load duke parents: diff changeset	124 // Each code entry causes one stack bang n pages down the stack where n
13047 be525e91f65b 8026775: nsk/jvmti/RedefineClasses/StressRedefine crashes due to EXCEPTION_ACCESS_VIOLATION mikael parents: 10161 diff changeset	125 // is configurable by StackShadowPages. The setting depends on the maximum
0 a61af66fc99e Initial load duke parents: diff changeset	126 // depth of VM call stack or native before going back into java code,
a61af66fc99e Initial load duke parents: diff changeset	127 // since only java code can raise a stack overflow exception using the
a61af66fc99e Initial load duke parents: diff changeset	128 // stack banging mechanism. The VM and native code does not detect stack
a61af66fc99e Initial load duke parents: diff changeset	129 // overflow.
a61af66fc99e Initial load duke parents: diff changeset	130 // The code in JavaCalls::call() checks that there is at least n pages
a61af66fc99e Initial load duke parents: diff changeset	131 // available, so all entry code needs to do is bang once for the end of
a61af66fc99e Initial load duke parents: diff changeset	132 // this shadow zone.
a61af66fc99e Initial load duke parents: diff changeset	133 // The entry code may need to bang additional pages if the framesize
a61af66fc99e Initial load duke parents: diff changeset	134 // is greater than a page.
a61af66fc99e Initial load duke parents: diff changeset	135
a61af66fc99e Initial load duke parents: diff changeset	136 const int page_size = os::vm_page_size();
a61af66fc99e Initial load duke parents: diff changeset	137 int bang_end = StackShadowPages*page_size;
a61af66fc99e Initial load duke parents: diff changeset	138
a61af66fc99e Initial load duke parents: diff changeset	139 // This is how far the previous frame's stack banging extended.
a61af66fc99e Initial load duke parents: diff changeset	140 const int bang_end_safe = bang_end;
a61af66fc99e Initial load duke parents: diff changeset	141
a61af66fc99e Initial load duke parents: diff changeset	142 if (frame_size_in_bytes > page_size) {
a61af66fc99e Initial load duke parents: diff changeset	143 bang_end += frame_size_in_bytes;
a61af66fc99e Initial load duke parents: diff changeset	144 }
a61af66fc99e Initial load duke parents: diff changeset	145
a61af66fc99e Initial load duke parents: diff changeset	146 int bang_offset = bang_end_safe;
a61af66fc99e Initial load duke parents: diff changeset	147 while (bang_offset <= bang_end) {
a61af66fc99e Initial load duke parents: diff changeset	148 // Need at least one stack bang at end of shadow zone.
a61af66fc99e Initial load duke parents: diff changeset	149 bang_stack_with_offset(bang_offset);
a61af66fc99e Initial load duke parents: diff changeset	150 bang_offset += page_size;
a61af66fc99e Initial load duke parents: diff changeset	151 }
a61af66fc99e Initial load duke parents: diff changeset	152 } // end (UseStackBanging)
a61af66fc99e Initial load duke parents: diff changeset	153 }
a61af66fc99e Initial load duke parents: diff changeset	154
a61af66fc99e Initial load duke parents: diff changeset	155 void Label::add_patch_at(CodeBuffer* cb, int branch_loc) {
a61af66fc99e Initial load duke parents: diff changeset	156 assert(_loc == -1, "Label is unbound");
a61af66fc99e Initial load duke parents: diff changeset	157 if (_patch_index < PatchCacheSize) {
a61af66fc99e Initial load duke parents: diff changeset	158 _patches[_patch_index] = branch_loc;
a61af66fc99e Initial load duke parents: diff changeset	159 } else {
a61af66fc99e Initial load duke parents: diff changeset	160 if (_patch_overflow == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	161 _patch_overflow = cb->create_patch_overflow();
a61af66fc99e Initial load duke parents: diff changeset	162 }
a61af66fc99e Initial load duke parents: diff changeset	163 _patch_overflow->push(branch_loc);
a61af66fc99e Initial load duke parents: diff changeset	164 }
a61af66fc99e Initial load duke parents: diff changeset	165 ++_patch_index;
a61af66fc99e Initial load duke parents: diff changeset	166 }
a61af66fc99e Initial load duke parents: diff changeset	167
a61af66fc99e Initial load duke parents: diff changeset	168 void Label::patch_instructions(MacroAssembler* masm) {
a61af66fc99e Initial load duke parents: diff changeset	169 assert(is_bound(), "Label is bound");
a61af66fc99e Initial load duke parents: diff changeset	170 CodeBuffer* cb = masm->code();
a61af66fc99e Initial load duke parents: diff changeset	171 int target_sect = CodeBuffer::locator_sect(loc());
a61af66fc99e Initial load duke parents: diff changeset	172 address target = cb->locator_address(loc());
a61af66fc99e Initial load duke parents: diff changeset	173 while (_patch_index > 0) {
a61af66fc99e Initial load duke parents: diff changeset	174 --_patch_index;
a61af66fc99e Initial load duke parents: diff changeset	175 int branch_loc;
a61af66fc99e Initial load duke parents: diff changeset	176 if (_patch_index >= PatchCacheSize) {
a61af66fc99e Initial load duke parents: diff changeset	177 branch_loc = _patch_overflow->pop();
a61af66fc99e Initial load duke parents: diff changeset	178 } else {
a61af66fc99e Initial load duke parents: diff changeset	179 branch_loc = _patches[_patch_index];
a61af66fc99e Initial load duke parents: diff changeset	180 }
a61af66fc99e Initial load duke parents: diff changeset	181 int branch_sect = CodeBuffer::locator_sect(branch_loc);
a61af66fc99e Initial load duke parents: diff changeset	182 address branch = cb->locator_address(branch_loc);
a61af66fc99e Initial load duke parents: diff changeset	183 if (branch_sect == CodeBuffer::SECT_CONSTS) {
a61af66fc99e Initial load duke parents: diff changeset	184 // The thing to patch is a constant word.
a61af66fc99e Initial load duke parents: diff changeset	185 (address)branch = target;
a61af66fc99e Initial load duke parents: diff changeset	186 continue;
a61af66fc99e Initial load duke parents: diff changeset	187 }
a61af66fc99e Initial load duke parents: diff changeset	188
a61af66fc99e Initial load duke parents: diff changeset	189 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	190 // Cross-section branches only work if the
a61af66fc99e Initial load duke parents: diff changeset	191 // intermediate section boundaries are frozen.
a61af66fc99e Initial load duke parents: diff changeset	192 if (target_sect != branch_sect) {
a61af66fc99e Initial load duke parents: diff changeset	193 for (int n = MIN2(target_sect, branch_sect),
a61af66fc99e Initial load duke parents: diff changeset	194 nlimit = (target_sect + branch_sect) - n;
a61af66fc99e Initial load duke parents: diff changeset	195 n < nlimit; n++) {
a61af66fc99e Initial load duke parents: diff changeset	196 CodeSection* cs = cb->code_section(n);
a61af66fc99e Initial load duke parents: diff changeset	197 assert(cs->is_frozen(), "cross-section branch needs stable offsets");
a61af66fc99e Initial load duke parents: diff changeset	198 }
a61af66fc99e Initial load duke parents: diff changeset	199 }
a61af66fc99e Initial load duke parents: diff changeset	200 #endif //ASSERT
a61af66fc99e Initial load duke parents: diff changeset	201
a61af66fc99e Initial load duke parents: diff changeset	202 // Push the target offset into the branch instruction.
a61af66fc99e Initial load duke parents: diff changeset	203 masm->pd_patch_instruction(branch, target);
a61af66fc99e Initial load duke parents: diff changeset	204 }
a61af66fc99e Initial load duke parents: diff changeset	205 }
a61af66fc99e Initial load duke parents: diff changeset	206
622 56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	207 struct DelayedConstant {
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	208 typedef void (*value_fn_t)();
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	209 BasicType type;
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	210 intptr_t value;
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	211 value_fn_t value_fn;
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	212 // This limit of 20 is generous for initial uses.
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	213 // The limit needs to be large enough to store the field offsets
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	214 // into classes which do not have statically fixed layouts.
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	215 // (Initial use is for method handle object offsets.)
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	216 // Look for uses of "delayed_value" in the source code
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	217 // and make sure this number is generous enough to handle all of them.
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	218 enum { DC_LIMIT = 20 };
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	219 static DelayedConstant delayed_constants[DC_LIMIT];
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	220 static DelayedConstant* add(BasicType type, value_fn_t value_fn);
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	221 bool match(BasicType t, value_fn_t cfn) {
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	222 return type == t && value_fn == cfn;
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	223 }
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	224 static void update_all();
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	225 };
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	226
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	227 DelayedConstant DelayedConstant::delayed_constants[DC_LIMIT];
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	228 // Default C structure initialization rules have the following effect here:
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	229 // = { { (BasicType)0, (intptr_t)NULL }, ... };
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	230
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	231 DelayedConstant* DelayedConstant::add(BasicType type,
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	232 DelayedConstant::value_fn_t cfn) {
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	233 for (int i = 0; i < DC_LIMIT; i++) {
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	234 DelayedConstant* dcon = &delayed_constants[i];
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	235 if (dcon->match(type, cfn))
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	236 return dcon;
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	237 if (dcon->value_fn == NULL) {
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	238 // (cmpxchg not because this is multi-threaded but because I'm paranoid)
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	239 if (Atomic::cmpxchg_ptr(CAST_FROM_FN_PTR(void*, cfn), &dcon->value_fn, NULL) == NULL) {
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	240 dcon->type = type;
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	241 return dcon;
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	242 }
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	243 }
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	244 }
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	245 // If this assert is hit (in pre-integration testing!) then re-evaluate
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	246 // the comment on the definition of DC_LIMIT.
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	247 guarantee(false, "too many delayed constants");
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	248 return NULL;
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	249 }
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	250
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	251 void DelayedConstant::update_all() {
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	252 for (int i = 0; i < DC_LIMIT; i++) {
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	253 DelayedConstant* dcon = &delayed_constants[i];
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	254 if (dcon->value_fn != NULL && dcon->value == 0) {
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	255 typedef int (*int_fn_t)();
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	256 typedef address (*address_fn_t)();
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	257 switch (dcon->type) {
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	258 case T_INT: dcon->value = (intptr_t) ((int_fn_t) dcon->value_fn)(); break;
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	259 case T_ADDRESS: dcon->value = (intptr_t) ((address_fn_t)dcon->value_fn)(); break;
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	260 }
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	261 }
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	262 }
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	263 }
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	264
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 4766 diff changeset	265 RegisterOrConstant AbstractAssembler::delayed_value(int(*value_fn)(), Register tmp, int offset) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 4766 diff changeset	266 intptr_t val = (intptr_t) (*value_fn)();
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 4766 diff changeset	267 if (val != 0) return val + offset;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 4766 diff changeset	268 return delayed_value_impl(delayed_value_addr(value_fn), tmp, offset);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 4766 diff changeset	269 }
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 4766 diff changeset	270 RegisterOrConstant AbstractAssembler::delayed_value(address(*value_fn)(), Register tmp, int offset) {
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 4766 diff changeset	271 intptr_t val = (intptr_t) (*value_fn)();
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 4766 diff changeset	272 if (val != 0) return val + offset;
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 4766 diff changeset	273 return delayed_value_impl(delayed_value_addr(value_fn), tmp, offset);
1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 4766 diff changeset	274 }
622 56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	275 intptr_t* AbstractAssembler::delayed_value_addr(int(*value_fn)()) {
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	276 DelayedConstant* dcon = DelayedConstant::add(T_INT, (DelayedConstant::value_fn_t) value_fn);
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	277 return &dcon->value;
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	278 }
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	279 intptr_t* AbstractAssembler::delayed_value_addr(address(*value_fn)()) {
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	280 DelayedConstant* dcon = DelayedConstant::add(T_ADDRESS, (DelayedConstant::value_fn_t) value_fn);
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	281 return &dcon->value;
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	282 }
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	283 void AbstractAssembler::update_delayed_values() {
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	284 DelayedConstant::update_all();
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	285 }
56aae7be60d4 6812678: macro assembler needs delayed binding of a few constants (for 6655638) jrose parents: 605 diff changeset	286
0 a61af66fc99e Initial load duke parents: diff changeset	287 void AbstractAssembler::block_comment(const char* comment) {
a61af66fc99e Initial load duke parents: diff changeset	288 if (sect() == CodeBuffer::SECT_INSTS) {
a61af66fc99e Initial load duke parents: diff changeset	289 code_section()->outer()->block_comment(offset(), comment);
a61af66fc99e Initial load duke parents: diff changeset	290 }
a61af66fc99e Initial load duke parents: diff changeset	291 }
a61af66fc99e Initial load duke parents: diff changeset	292
8767 a5de0cc2f91c 8008555: Debugging code in compiled method sometimes leaks memory roland parents: 7430 diff changeset	293 const char* AbstractAssembler::code_string(const char* str) {
a5de0cc2f91c 8008555: Debugging code in compiled method sometimes leaks memory roland parents: 7430 diff changeset	294 if (sect() == CodeBuffer::SECT_INSTS \|\| sect() == CodeBuffer::SECT_STUBS) {
a5de0cc2f91c 8008555: Debugging code in compiled method sometimes leaks memory roland parents: 7430 diff changeset	295 return code_section()->outer()->code_string(str);
a5de0cc2f91c 8008555: Debugging code in compiled method sometimes leaks memory roland parents: 7430 diff changeset	296 }
a5de0cc2f91c 8008555: Debugging code in compiled method sometimes leaks memory roland parents: 7430 diff changeset	297 return NULL;
a5de0cc2f91c 8008555: Debugging code in compiled method sometimes leaks memory roland parents: 7430 diff changeset	298 }
a5de0cc2f91c 8008555: Debugging code in compiled method sometimes leaks memory roland parents: 7430 diff changeset	299
237 1fdb98a17101 6716785: implicit null checks not triggering with CompressedOops coleenp parents: 0 diff changeset	300 bool MacroAssembler::needs_explicit_null_check(intptr_t offset) {
1fdb98a17101 6716785: implicit null checks not triggering with CompressedOops coleenp parents: 0 diff changeset	301 // Exception handler checks the nmethod's implicit null checks table
1fdb98a17101 6716785: implicit null checks not triggering with CompressedOops coleenp parents: 0 diff changeset	302 // only when this method returns false.
642 660978a2a31a 6791178: Specialize for zero as the compressed oop vm heap base kvn parents: 622 diff changeset	303 #ifdef _LP64
660978a2a31a 6791178: Specialize for zero as the compressed oop vm heap base kvn parents: 622 diff changeset	304 if (UseCompressedOops && Universe::narrow_oop_base() != NULL) {
660978a2a31a 6791178: Specialize for zero as the compressed oop vm heap base kvn parents: 622 diff changeset	305 assert (Universe::heap() != NULL, "java heap should be initialized");
237 1fdb98a17101 6716785: implicit null checks not triggering with CompressedOops coleenp parents: 0 diff changeset	306 // The first page after heap_base is unmapped and
1fdb98a17101 6716785: implicit null checks not triggering with CompressedOops coleenp parents: 0 diff changeset	307 // the 'offset' is equal to [heap_base + offset] for
1fdb98a17101 6716785: implicit null checks not triggering with CompressedOops coleenp parents: 0 diff changeset	308 // narrow oop implicit null checks.
642 660978a2a31a 6791178: Specialize for zero as the compressed oop vm heap base kvn parents: 622 diff changeset	309 uintptr_t base = (uintptr_t)Universe::narrow_oop_base();
660978a2a31a 6791178: Specialize for zero as the compressed oop vm heap base kvn parents: 622 diff changeset	310 if ((uintptr_t)offset >= base) {
237 1fdb98a17101 6716785: implicit null checks not triggering with CompressedOops coleenp parents: 0 diff changeset	311 // Normalize offset for the next check.
642 660978a2a31a 6791178: Specialize for zero as the compressed oop vm heap base kvn parents: 622 diff changeset	312 offset = (intptr_t)(pointer_delta((void)offset, (void)base, 1));
237 1fdb98a17101 6716785: implicit null checks not triggering with CompressedOops coleenp parents: 0 diff changeset	313 }
1fdb98a17101 6716785: implicit null checks not triggering with CompressedOops coleenp parents: 0 diff changeset	314 }
642 660978a2a31a 6791178: Specialize for zero as the compressed oop vm heap base kvn parents: 622 diff changeset	315 #endif
237 1fdb98a17101 6716785: implicit null checks not triggering with CompressedOops coleenp parents: 0 diff changeset	316 return offset < 0 \|\| os::vm_page_size() <= offset;
1fdb98a17101 6716785: implicit null checks not triggering with CompressedOops coleenp parents: 0 diff changeset	317 }

Mercurial > hg > graal-compiler

annotate src/share/vm/asm/assembler.cpp @ 14909:4ca6dc0799b6