1 /*-------------------------------------------------------------------------
3 pcode.h - post code generation
5 Written By - Scott Dattalo scott@dattalo.com
6 PIC16 port - Martin Dubuc m.dubuc@rogers.com
8 This program is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 -------------------------------------------------------------------------*/
24 #ifndef __PCODEFLOW_H__
25 #define __PCODEFLOW_H__
27 /*************************************************
30 * The "conditions" are bit-mapped flags that describe
31 * input and/or output conditions that are affected by
32 * the instructions. For example:
36 * This instruction depends upon 'SOME_REG'. Consequently
37 * it has the input condition PCC_REGISTER set to true.
39 * In addition, this instruction affects the Z bit in the
40 * status register and affects W. Thus the output conditions
42 * PCC_ZERO_BIT | PCC_W
44 * The conditions are intialized when the pCode for an
45 * instruction is created. They're subsequently used
46 * by the pCode optimizer determine state information
47 * in the program flow.
48 *************************************************/
51 #define PCC_REGISTER (1<<0)
52 #define PCC_REGISTER2 (1<<1)
59 #define PCC_EXAMINE_PCOP (1<<8)
60 #define PCC_LITERAL (1<<9)
61 #define PCC_REL_ADDR (1<<10)
63 #define PCC_STATUS (PCC_C | PCC_Z | PCC_DC | PCC_OV | PCC_N)
65 /*------------------------------------------------------------*/
67 void BuildFlowAncestry(pBlock *pb);
69 #endif // __PCODEFLOW_H__