1 /*-------------------------------------------------------------------------
3 pcode.h - post code generation
4 Written By - Scott Dattalo scott@dattalo.com
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 -------------------------------------------------------------------------*/
22 #ifndef __PCODEFLOW_H__
23 #define __PCODEFLOW_H__
25 /*************************************************
28 * The "conditions" are bit-mapped flags that describe
29 * input and/or output conditions that are affected by
30 * the instructions. For example:
34 * This instruction depends upon 'SOME_REG'. Consequently
35 * it has the input condition PCC_REGISTER set to true.
37 * In addition, this instruction affects the Z bit in the
38 * status register and affects W. Thus the output conditions
40 * PCC_ZERO_BIT | PCC_W
42 * The conditions are intialized when the pCode for an
43 * instruction is created. They're subsequently used
44 * by the pCode optimizer determine state information
45 * in the program flow.
46 *************************************************/
49 #define PCC_REGISTER (1<<0)
54 #define PCC_EXAMINE_PCOP (1<<5)
55 #define PCC_REG_BANK0 (1<<6)
56 #define PCC_REG_BANK1 (1<<7)
57 #define PCC_REG_BANK2 (1<<8)
58 #define PCC_REG_BANK3 (1<<9)
59 #define PCC_LITERAL (1<<10)
61 /*------------------------------------------------------------*/
63 void BuildFlowAncestry(pBlock *pb);
65 #endif // __PCODEFLOW_H__