 |
C-Breeze C Compiler Infrastructure [ Project home page] |
storage_alloc.h
Go to the documentation of this file.00001 // $Id: storage_alloc.h,v 1.9 2003/08/11 17:38:53 abrown Exp $ 00002 // ---------------------------------------------------------------------- 00003 // 00004 // C-Breeze 00005 // C Compiler Framework 00006 // 00007 // Copyright (c) 2002 University of Texas at Austin 00008 // 00009 // Paul Arthur Navratil 00010 // Charles Nevill 00011 // Calvin Lin 00012 // 00013 // Permission is hereby granted, free of charge, to any person 00014 // obtaining a copy of this software and associated documentation 00015 // files (the "Software"), to deal in the Software without 00016 // restriction, including without limitation the rights to use, copy, 00017 // modify, merge, publish, distribute, sublicense, and/or sell copies 00018 // of the Software, and to permit persons to whom the Software is 00019 // furnished to do so, subject to the following conditions: 00020 // 00021 // The above copyright notice and this permission notice shall be 00022 // included in all copies or substantial portions of the Software. 00023 // 00024 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00025 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00026 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00027 // NONINFRINGEMENT. IN NO EVENT SHALL THE UNIVERSITY OF TEXAS AT 00028 // AUSTIN BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 00029 // IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF 00030 // OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 00031 // THE SOFTWARE. 00032 // 00033 // We acknowledge the C-to-C Translator from MIT Laboratory for 00034 // Computer Science for inspiring parts of the C-Breeze design. 00035 // 00036 // ---------------------------------------------------------------------- 00037 00038 #ifndef STORAGE_ALLOC_H 00039 #define STORAGE_ALLOC_H 00040 00041 #include <list> 00042 #include "c_breeze.h" 00043 #include "register.h" 00044 00045 // 00046 // helper class used in initial LIR generation phase to allocate 00047 // registers and stack locations for variables 00048 // 00049 class storage_alloc { 00050 public: 00051 // ctor/dtor 00052 storage_alloc (void); 00053 00054 // reset this thing (should be called before processing a new procedure) 00055 void reset (); 00056 00057 // allocate a temporary variable and a register for it 00058 void get_temp_var (typeNode * intendedType, Register & reg, 00059 declNode * &pDecl); 00060 void get_temp_ptr(Register & reg, declNode *& pDecl); 00061 00062 // allocate storage for the specified declaration 00063 void assign_register(declNode *); 00064 00065 // attempt to obtain a register for argument passing 00066 // returns true if successful 00067 bool assign_arg_register(typeNode *, Register &); 00068 int assign_arg_stack(typeNode *); 00069 00070 private: 00071 // the next local register to be allocated 00072 unsigned int _next_reg; 00073 00074 // the next input register to be allocated 00075 unsigned int _next_reg_formal_fixed; 00076 unsigned int _next_reg_formal_float; 00077 00078 // the next stack location to be allocated to a formal 00079 unsigned int _next_stack_formal; 00080 }; 00081 00082 #endif /* STORAGE_ALLOC_H */