1 /*-------------------------------------------------------------------------
3 pcode.h - post code generation
4 Written By - Scott Dattalo scott@dattalo.com
5 PIC16 port - Martin Dubuc m.dubuc@rogers.com
7 This program is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 2, or (at your option) any
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 -------------------------------------------------------------------------*/
23 #ifndef __PCODEFLOW_H__
24 #define __PCODEFLOW_H__
26 /*************************************************
29 * The "conditions" are bit-mapped flags that describe
30 * input and/or output conditions that are affected by
31 * the instructions. For example:
35 * This instruction depends upon 'SOME_REG'. Consequently
36 * it has the input condition PCC_REGISTER set to true.
38 * In addition, this instruction affects the Z bit in the
39 * status register and affects W. Thus the output conditions
41 * PCC_ZERO_BIT | PCC_W
43 * The conditions are intialized when the pCode for an
44 * instruction is created. They're subsequently used
45 * by the pCode optimizer determine state information
46 * in the program flow.
47 *************************************************/
50 #define PCC_REGISTER (1<<0)
51 #define PCC_REGISTER2 (1<<1)
58 #define PCC_EXAMINE_PCOP (1<<8)
59 #define PCC_LITERAL (1<<9)
60 #define PCC_REL_ADDR (1<<10)
62 /*------------------------------------------------------------*/
64 void BuildFlowAncestry(pBlock *pb);
66 #endif // __PCODEFLOW_H__