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gbeauche |
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/* |
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* basic-blockinfo.hpp - PowerPC basic block information |
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* |
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* Kheperix (C) 2003 Gwenole Beauchesne |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#ifndef BASIC_BLOCKINFO_H |
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#define BASIC_BLOCKINFO_H |
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struct basic_block_info |
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{ |
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typedef basic_block_info block_info; |
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static const int MAX_TARGETS = 2; |
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struct dependency |
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{ |
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block_info * source; |
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block_info * target; |
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dependency * next; |
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dependency ** prev_p; |
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}; |
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uintptr pc; |
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int32 count; |
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uint32 size; |
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uint32 c1; |
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uint32 c2; |
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// List of blocks we depend on |
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dependency dep[MAX_TARGETS]; |
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// List of blocks that depends on this block |
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dependency * deplist; |
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void init(uintptr start_pc); |
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void remove_dep(dependency *d); |
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void remove_deps(); |
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void create_jmpdep(block_info *tbi, int i); |
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void maybe_create_jmpdep(block_info *tbi); |
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}; |
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inline void |
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basic_block_info::init(uintptr start_pc) |
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{ |
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pc = start_pc; |
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deplist = NULL; |
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for (int i = 0; i < MAX_TARGETS; i++) { |
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dep[i].source = NULL; |
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dep[i].target = NULL; |
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dep[i].next = NULL; |
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dep[i].prev_p = NULL; |
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} |
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} |
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inline void |
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basic_block_info::remove_dep(dependency *d) |
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{ |
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if (d->prev_p) |
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*(d->prev_p) = d->next; |
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if (d->next) |
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d->next->prev_p = d->prev_p; |
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d->prev_p = NULL; |
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d->next = NULL; |
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} |
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inline void |
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basic_block_info::remove_deps() |
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{ |
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for (int i = 0; i < MAX_TARGETS; i++) |
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remove_dep(&dep[i]); |
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} |
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inline void |
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basic_block_info::create_jmpdep(block_info *tbi, int i) |
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{ |
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dep[i].source = this; |
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dep[i].target = tbi; |
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dep[i].next = tbi->deplist; |
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if (dep[i].next) |
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dep[i].next->prev_p = &(dep[i].next); |
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dep[i].prev_p = &(tbi->deplist); |
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tbi->deplist = &(dep[i]); |
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} |
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inline void |
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basic_block_info::maybe_create_jmpdep(block_info *tbi) |
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{ |
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for (int i = 0; i < MAX_TARGETS && dep[i].target != tbi; i++) { |
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if (dep[i].source == NULL) { |
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create_jmpdep(tbi, i); |
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break; |
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} |
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} |
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} |
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#endif /* BASIC_BLOCKINFO_H */ |
