87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/*-------------------------------------------------------------------------
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SDCCralloc.h - header file register allocation
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Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
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PIC port - T. Scott Dattalo scott@dattalo.com (2000)
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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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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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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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In other words, you are welcome to use, share and improve this program.
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You are forbidden to forbid anyone else to use, share and improve
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what you give them. Help stamp out software-hoarding!
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-------------------------------------------------------------------------*/
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#include "SDCCicode.h"
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#include "SDCCBBlock.h"
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#ifndef SDCCRALLOC_H
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#define SDCCRALLOC_H 1
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enum
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{
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R2_IDX = 0, R3_IDX, R4_IDX,
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R5_IDX, R6_IDX, R7_IDX,
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R0_IDX, R1_IDX, X8_IDX,
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X9_IDX, X10_IDX, X11_IDX,
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X12_IDX, CND_IDX
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};
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#define REG_PTR 0x01
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#define REG_GPR 0x02
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#define REG_CND 0x04
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#define REG_SFR 0x08
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/* definition for the registers */
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typedef struct regs
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{
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short type; /* can have value
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* REG_GPR, REG_PTR or REG_CND
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* This like the "meta-type" */
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short pc_type; /* pcode type */
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short rIdx; /* index into register table */
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// short otype;
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char *name; /* name */
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char *dname; /* name when direct access needed */
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// char *base ; /* base address */
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short offset; /* offset from the base */
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unsigned isFree:1; /* is currently unassigned */
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unsigned wasUsed:1; /* becomes true if register has been used */
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}
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regs;
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extern regs regspic14[];
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extern int pic14_nRegs;
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regs *pic14_regWithIdx (int);
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void pic14_freeAllRegs ();
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void pic14_deallocateAllRegs ();
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regs *pic14_findFreeReg(void);
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enum PIC_register_types
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{
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PIC_INDF,
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PIC_TMR0,
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PIC_FSR,
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PIC_STATUS,
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PIC_IOPORT,
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PIC_IOTRIS,
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PIC_GPR, /* A general purpose file register */
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PIC_SFR /* A special function register */
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};
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#endif
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