Mercurial > hg > truffle
view src/gpu/hsail/vm/gpu_hsail_OopMapHelper.hpp @ 18152:ff694c40bdee
LIRGenerationResult: add buildFrameMap() and getFrameMap().
author | Josef Eisl <josef.eisl@jku.at> |
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date | Wed, 22 Oct 2014 16:54:51 +0200 |
parents | e9998e2be7f5 |
children |
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/* * Copyright (c) 2014, Oracle and/or its affiliates. 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. * */ #ifndef GPU_HSAIL_VM_GPU_HSAIL_OOPMAPHELPER_HPP #define GPU_HSAIL_VM_GPU_HSAIL_OOPMAPHELPER_HPP #include "graal/graalEnv.hpp" #include "code/debugInfo.hpp" #include "code/location.hpp" // Takes the jobject for the array of ints created by the java side // and decodes the information based on pc_offset to find oops class HSAILOopMapHelper : public StackObj { private: jobject _oop_map_array_jobject; typeArrayOop _oop_map_array; int _last_pcoffset; int _last_idx; enum { SAVEAREACOUNTS_OFST=0, SPAN_OFST=1, HEADERSIZE=2 }; int mapPcOffsetToIndex(int pcOffset) { if (pcOffset == _last_pcoffset) { return _last_idx; } int span = _oop_map_array->int_at(SPAN_OFST); for (int idx = HEADERSIZE; idx < _oop_map_array->length(); idx += span) { int ofst = _oop_map_array->int_at(idx); if (ofst == pcOffset) { _last_pcoffset = pcOffset; _last_idx = idx + 1; return _last_idx; } } ShouldNotReachHere(); return -1; } public: HSAILOopMapHelper(jobject oop_map_array_jobject) { _oop_map_array_jobject = oop_map_array_jobject; _last_pcoffset = -1; resolve_arrays(); } void resolve_arrays() { _oop_map_array = (typeArrayOop) JNIHandles::resolve(_oop_map_array_jobject); } static int get_save_area_counts(jobject oop_map_array_jobject) { typeArrayOop oop_map_array_resolved = (typeArrayOop) JNIHandles::resolve(oop_map_array_jobject); return oop_map_array_resolved->int_at(SAVEAREACOUNTS_OFST); } bool is_oop(int pcOffset, int bit){ int bits_int_idx = mapPcOffsetToIndex(pcOffset) + (bit / 32); int bitpos = bit % 32; int bits = _oop_map_array->int_at(bits_int_idx); return ((bits & (1 << bitpos)) != 0); } }; #endif // GPU_HSAIL_VM_GPU_HSAIL_OOPMAPHELPER_HPP