/*------------------------------------------------------------------------- ralloc.h - header file register allocation Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998) PIC port - T. Scott Dattalo scott@dattalo.com (2000) PIC16 port - Martin Dubuc m.dubuc@rogers.com (2002) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. In other words, you are welcome to use, share and improve this program. You are forbidden to forbid anyone else to use, share and improve what you give them. Help stamp out software-hoarding! -------------------------------------------------------------------------*/ #include "SDCCicode.h" #include "SDCCBBlock.h" #ifndef SDCCRALLOC_H #define SDCCRALLOC_H 1 #include "pcoderegs.h" enum { R2_IDX = 0, R3_IDX, R4_IDX, R5_IDX, R6_IDX, R7_IDX, R0_IDX, R1_IDX, X8_IDX, X9_IDX, X10_IDX, X11_IDX, X12_IDX, CND_IDX }; enum { REG_PTR=1, REG_GPR, REG_CND, REG_SFR, REG_STK, REG_TMP }; //#define REG_PTR 0x01 //#define REG_GPR 0x02 //#define REG_CND 0x04 //#define REG_SFR 0x08 //#define REG_STK 0x10 /* Use a register as a psuedo stack */ //#define REG_TMP 0x20 /* definition for the registers */ typedef struct reg_info { short type; /* can have value * REG_GPR, REG_PTR or REG_CND * This like the "meta-type" */ short pc_type; /* pcode type */ short rIdx; /* index into register table */ // short otype; char *name; /* name */ unsigned isFree:1; /* is currently unassigned */ unsigned wasUsed:1; /* becomes true if register has been used */ unsigned isFixed:1; /* True if address can't change */ // unsigned isMapped:1; /* The Register's address has been mapped to physical RAM */ unsigned isBitField:1; /* True if reg is type bit OR is holder for several bits */ unsigned isEmitted:1; /* True if the reg has been written to a .asm file */ unsigned accessBank:1; /* True if the reg is explicit placed in access bank */ unsigned isLocal:1; /* True if the reg is allocated in function's local frame */ unsigned address; /* reg's address if isFixed | isMapped is true */ unsigned size; /* 0 for byte, 1 for int, 4 for long */ unsigned alias; /* Alias mask if register appears in multiple banks */ struct reg_info *reg_alias; /* If more than one register share the same address * then they'll point to each other. (primarily for bits)*/ operand *regop; /* reference to the operand used to create the register */ pCodeRegLives reglives; /* live range mapping */ } reg_info; extern reg_info regspic16[]; extern int pic16_nRegs; extern int pic16_Gstack_base_addr; /* As registers are created, they're added to a set (based on the register type). Here are the sets of registers that are supported in the PIC port: */ extern set *pic16_dynAllocRegs; extern set *pic16_dynStackRegs; extern set *pic16_dynProcessorRegs; extern set *pic16_dynDirectRegs; extern set *pic16_dynDirectBitRegs; extern set *pic16_dynInternalRegs; extern set *pic16_builtin_functions; extern set *pic16_rel_udata; extern set *pic16_fix_udata; extern set *pic16_equ_data; extern set *pic16_int_regs; extern set *pic16_acs_udata; void pic16_assignRegisters(ebbIndex *ebbi); reg_info *pic16_regWithIdx(int); reg_info *pic16_typeRegWithIdx(int, int, int); reg_info *pic16_dirregWithName(const char *name); reg_info *pic16_allocregWithName(const char *name); reg_info *pic16_regWithName(const char *name); void pic16_freeAllRegs(void); void pic16_deallocateAllRegs(void); reg_info *pic16_findFreeReg(short type); reg_info *pic16_findFreeRegNext(short type, reg_info *creg); reg_info *pic16_allocWithIdx(int idx); reg_info *pic16_allocDirReg (operand *op); reg_info *pic16_allocRegByName (const char *name, int size, operand *op); extern char *pic16_decodeOp(unsigned int op); reg_info* newReg(int type, short pc_type, int rIdx, const char *name, unsigned size, int alias, operand *refop); /* Define register address that are constant across PIC16 family */ #define IDX_TMR0 0xfd6 #define IDX_STATUS 0xfd8 #define IDX_INTCON 0xff2 #define IDX_WREG 0xfe8 #define IDX_BSR 0xfe0 #define IDX_PCL 0xff9 #define IDX_PCLATH 0xffa #define IDX_PCLATU 0xffb #define IDX_TOSL 0xffd #define IDX_TOSH 0xffe #define IDX_TOSU 0xfff #define IDX_TBLPTRL 0xff6 #define IDX_TBLPTRH 0xff7 #define IDX_TBLPTRU 0xff8 #define IDX_TABLAT 0xff5 #define IDX_FSR0 0xfe9 #define IDX_FSR0L 0xfe9 #define IDX_FSR0H 0xfea #define IDX_FSR1 0xfe1 #define IDX_FSR1L 0xfe1 #define IDX_FSR1H 0xfe2 #define IDX_FSR2 0xfd9 #define IDX_FSR2L 0xfd9 #define IDX_FSR2H 0xfda #define IDX_INDF0 0xfef #define IDX_POSTINC0 0xfee #define IDX_POSTDEC0 0xfed #define IDX_PREINC0 0xfec #define IDX_PLUSW0 0xfeb #define IDX_INDF1 0xfe7 #define IDX_POSTINC1 0xfe6 #define IDX_POSTDEC1 0xfe5 #define IDX_PREINC1 0xfe4 #define IDX_PLUSW1 0xfe3 #define IDX_INDF2 0xfdf #define IDX_POSTINC2 0xfde #define IDX_POSTDEC2 0xfdd #define IDX_PREINC2 0xfdc #define IDX_PLUSW2 0xfdb #define IDX_PRODL 0xff3 #define IDX_PRODH 0xff4 /* EEPROM registers */ #define IDX_EECON1 0xfa6 #define IDX_EECON2 0xfa7 #define IDX_EEDATA 0xfa8 #define IDX_EEADR 0xfa9 #define IDX_KZ 0x7fff /* Known zero - actually just a general purpose reg. */ #define IDX_WSAVE 0x7ffe #define IDX_SSAVE 0x7ffd #define IDX_GPSIMIO 0xf7f #define IDX_GPSIMIO2 0xf7e #endif