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Diffstat (limited to 'src/pic14/ralloc.h')
| -rw-r--r-- | src/pic14/ralloc.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/src/pic14/ralloc.h b/src/pic14/ralloc.h new file mode 100644 index 0000000..bcc1704 --- /dev/null +++ b/src/pic14/ralloc.h @@ -0,0 +1,123 @@ +/*------------------------------------------------------------------------- + + SDCCralloc.h - header file register allocation + + Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998) + PIC port - T. Scott Dattalo scott@dattalo.com (2000) + + 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! +-------------------------------------------------------------------------*/ + +#ifndef SDCCRALLOC_H +#define SDCCRALLOC_H 1 + +#include "common.h" + +#include "pcoderegs.h" + + +enum { + REG_PTR=1, + REG_GPR, + REG_CND, + REG_SFR, + REG_STK, + REG_TMP +}; + +/* 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 */ + 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 isPublic:1; /* True if the reg is not static and can be modified in another module (ie a another c or asm file) */ + unsigned isExtern:1; /* True if the reg is in another module */ + 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)*/ + pCodeRegLives reglives; /* live range mapping */ +} +reg_info; +extern reg_info regspic14[]; +extern int 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 *dynAllocRegs; +extern set *dynStackRegs; +extern set *dynProcessorRegs; +extern set *dynDirectRegs; +extern set *dynDirectBitRegs; +extern set *dynInternalRegs; + + +void initStack(int base_address, int size, int shared); +reg_info *pic14_regWithIdx(int); +reg_info *dirregWithName(const char *name); +void pic14_assignRegisters(ebbIndex *ebbi); +reg_info *pic14_findFreeReg(short type); +reg_info *pic14_allocWithIdx (int idx); +reg_info *typeRegWithIdx(int idx, int type, int fixed); +reg_info *regFindWithName(const char *name); + +void pic14_debugLogClose(void); +void writeUsedRegs(FILE *of); + +reg_info *allocDirReg(operand *op ); +reg_info *allocInternalRegister(int rIdx, const char *name, PIC_OPTYPE po_type, int alias); +reg_info *allocProcessorRegister(int rIdx, const char *name, short po_type, int alias); +reg_info *allocRegByName(const char *name, int size ); +reg_info *allocNewDirReg(sym_link *symlnk, const char *name); + +/* Define register address that are constant across PIC family */ +#define IDX_INDF 0 +#define IDX_INDF0 0 +#define IDX_TMR0 1 +#define IDX_PCL 2 +#define IDX_STATUS 3 +#define IDX_FSR 4 +#define IDX_FSR0L 4 +#define IDX_FSR0H 5 +#define IDX_PCLATH 0x0a +#define IDX_INTCON 0x0b + +#define IDX_KZ 0x7fff /* Known zero - actually just a general purpose reg. */ +#define IDX_WSAVE 0x7ffe +#define IDX_SSAVE 0x7ffd +#define IDX_PSAVE 0x7ffc + +#define pic14_nRegs 128 + +#endif |