SDCCralloc.h - header file register allocation
Written By - Sandeep Dutta . sandeep.dutta@usa.net (1998)
- PIC port - T. Scott Dattalo scott@dattalo.com (2000)
+ 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
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"
+#include "common.h"
+#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
+ 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 regs
- {
- 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 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 regs *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 */
- }
+{
+ 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 regs *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 */
+}
regs;
extern regs regspic14[];
-extern int pic14_nRegs;
extern int Gstack_base_addr;
/*
extern set *dynInternalRegs;
+void initStack(int base_address, int size, int shared);
regs *pic14_regWithIdx (int);
regs *dirregWithName (char *name );
-void pic14_freeAllRegs ();
-void pic14_deallocateAllRegs ();
+void pic14_assignRegisters (ebbIndex *ebbi);
regs *pic14_findFreeReg(short type);
regs *pic14_allocWithIdx (int idx);
regs *typeRegWithIdx (int idx, int type, int fixed);
+regs *regFindWithName (const char *name);
+
+void pic14_debugLogClose(void);
+void writeUsedRegs(FILE *of);
regs *allocDirReg (operand *op );
+regs *allocInternalRegister(int rIdx, char * name, PIC_OPTYPE po_type, int alias);
+regs *allocProcessorRegister(int rIdx, char * name, short po_type, int alias);
regs *allocRegByName (char *name, int size );
+regs *allocNewDirReg (sym_link *symlnk,const char *name);
/* Define register address that are constant across PIC family */
#define IDX_INDF 0
#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
projects / fw / sdcc / blobdiff