* Makefile.in, configure.in, configure,

[fw/sdcc] / src / pic / ralloc.h

diff --git a/src/pic/ralloc.h b/src/pic/ralloc.h
index 6b3bf841fd3318b23dbf54612cec8922ad4b504f..7835c48fec8d85c84dd0e5169e7472b51840d0cc 100644 (file)
--- a/src/pic/ralloc.h
+++ b/src/pic/ralloc.h
@@ -3,7 +3,7 @@
   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
@@ -23,49 +23,100 @@
    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
 
-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 };
+#include "common.h"
+
+#include "pcoderegs.h"
 
 
-#define REG_PTR 0x01
-#define REG_GPR 0x02
-#define REG_CND 0x04
+enum {
+  REG_PTR=1,
+  REG_GPR,
+  REG_CND,
+  REG_SFR,
+  REG_STK,
+  REG_TMP
+};
+
 /* definition for the registers */
 typedef struct regs
 {
-    short type;          /* can have value 
-                           REG_GPR, REG_PTR or REG_CND */
-    short rIdx ;         /* index into register table */
-  //    short otype;        
-    char *name ;         /* name */
-    char *dname;         /* name when direct access needed */
-    char *base ;         /* base address */
-    short offset;        /* offset from the base */
-    unsigned isFree :1;  /* is currently unassigned  */    
-} 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 */
+  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 Gstack_base_addr;
 
-regs  *pic14_regWithIdx (int);
+/*
+  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;
 
 
-enum PIC_register_types {
-  PIC_INDF,
-  PIC_TMR0,
-  PIC_FSR,
-  PIC_STATUS,
-  PIC_IOPORT,
-  PIC_IOTRIS,
-  PIC_GPR,         /*  A general purpose file register */
-  PIC_SFR          /*  A special function register */
-};
+void initStack(int base_address, int size, int shared);
+regs *pic14_regWithIdx (int);
+regs *dirregWithName (char *name );
+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_TMR0    1
+#define IDX_PCL     2
+#define IDX_STATUS  3
+#define IDX_FSR     4
+#define IDX_PORTA   5
+#define IDX_PORTB   6
+#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