1 /*-------------------------------------------------------------------------
3 pcode.h - post code generation
4 Written By - Scott Dattalo scott@dattalo.com
5 Ported to PIC16 By - Martin Dubuc m.dubuc@rogers.com
7 This program is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 2, or (at your option) any
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 -------------------------------------------------------------------------*/
29 The post code generation is an assembler optimizer. The assembly code
30 produced by all of the previous steps is fully functional. This step
31 will attempt to analyze the flow of the assembly code and agressively
32 optimize it. The peep hole optimizer attempts to do the same thing.
33 As you may recall, the peep hole optimizer replaces blocks of assembly
34 with more optimal blocks (e.g. removing redundant register loads).
35 However, the peep hole optimizer has to be somewhat conservative since
36 an assembly program has implicit state information that's unavailable
37 when only a few instructions are examined.
38 Consider this example:
44 The movf seems redundant since we know that the W register already
45 contains the same value of t1. So a peep hole optimizer is tempted to
46 remove the "movf". However, this is dangerous since the movf affects
47 the flags in the status register (specifically the Z flag) and subsequent
48 code may depend upon this. Look at these two examples:
52 movf t1,w ; Can't remove this movf
58 movf t1,w ; This movf can be removed
59 xorwf t2,w ; since xorwf will over write Z
69 /***********************************************************************
72 * The DFPRINTF macro will call fprintf if PCODE_DEBUG is defined.
73 * The macro is used like:
75 * DPRINTF(("%s #%d\n","test", 1));
77 * The double parenthesis (()) are necessary
79 ***********************************************************************/
83 #define DFPRINTF(args) (fprintf args)
85 #define DFPRINTF(args) ;
89 /***********************************************************************
90 * PIC status bits - this will move into device dependent headers
91 ***********************************************************************/
97 #define PIC_IRP_BIT 7 /* Indirect register page select */
99 /***********************************************************************
100 * PIC INTCON bits - this will move into device dependent headers
101 ***********************************************************************/
102 #define PIC_RBIF_BIT 0 /* Port B level has changed flag */
103 #define PIC_INTF_BIT 1 /* Port B bit 0 interrupt on edge flag */
104 #define PIC_T0IF_BIT 2 /* TMR0 has overflowed flag */
105 #define PIC_RBIE_BIT 3 /* Port B level has changed - Interrupt Enable */
106 #define PIC_INTE_BIT 4 /* Port B bit 0 interrupt on edge - Int Enable */
107 #define PIC_T0IE_BIT 5 /* TMR0 overflow Interrupt Enable */
108 #define PIC_PIE_BIT 6 /* Peripheral Interrupt Enable */
109 #define PIC_GIE_BIT 7 /* Global Interrupt Enable */
111 /***********************************************************************
112 * PIC bank definitions
113 ***********************************************************************/
114 #define PIC_BANK_FIRST 0
115 #define PIC_BANK_LAST 0xf
118 /***********************************************************************
120 ***********************************************************************/
126 /***********************************************************************
128 * PIC_OPTYPE - Operand types that are specific to the PIC architecture
130 * If a PIC assembly instruction has an operand then here is where we
131 * associate a type to it. For example,
135 * The movf has two operands: 'reg' and the W register. 'reg' is some
136 * arbitrary general purpose register, hence it has the type PO_GPR_REGISTER.
137 * The W register, which is the PIC's accumulator, has the type PO_W.
139 ***********************************************************************/
145 PO_NONE=0, // No operand e.g. NOP
146 PO_W, // The working register (as a destination)
147 PO_WREG, // The working register (as a file register)
148 PO_STATUS, // The 'STATUS' register
149 PO_BSR, // The 'BSR' register
150 PO_FSR0, // The "file select register" (in PIC18 family it's one
152 PO_INDF0, // The Indirect register
153 PO_INTCON, // Interrupt Control register
154 PO_GPR_REGISTER, // A general purpose register
155 PO_GPR_BIT, // A bit of a general purpose register
156 PO_GPR_TEMP, // A general purpose temporary register
157 PO_SFR_REGISTER, // A special function register (e.g. PORTA)
158 PO_PCL, // Program counter Low register
159 PO_PCLATH, // Program counter Latch high register
160 PO_PCLATU, // Program counter Latch upper register
161 PO_PRODL, // Product Register Low
162 PO_PRODH, // Product Register High
163 PO_LITERAL, // A constant
164 PO_REL_ADDR, // A relative address
165 PO_IMMEDIATE, // (8051 legacy)
166 PO_DIR, // Direct memory (8051 legacy)
167 PO_CRY, // bit memory (8051 legacy)
168 PO_BIT, // bit operand.
169 PO_STR, // (8051 legacy)
171 PO_WILD // Wild card operand in peep optimizer
175 /***********************************************************************
179 * This is not a list of the PIC's opcodes per se, but instead
180 * an enumeration of all of the different types of pic opcodes.
182 ***********************************************************************/
186 POC_WILD=-1, /* Wild card - used in the pCode peep hole optimizer
187 * to represent ANY pic opcode */
287 /***********************************************************************
288 * PC_TYPE - pCode Types
289 ***********************************************************************/
293 PC_COMMENT=0, /* pCode is a comment */
294 PC_INLINE, /* user's inline code */
295 PC_OPCODE, /* PORT dependent opcode */
296 PC_LABEL, /* assembly label */
297 PC_FLOW, /* flow analysis */
298 PC_FUNCTION, /* Function start or end */
299 PC_WILD, /* wildcard - an opcode place holder used
300 * in the pCode peep hole optimizer */
301 PC_CSOURCE, /* C-Source Line */
302 PC_ASMDIR, /* Assembler directive */
303 PC_BAD /* Mark the pCode object as being bad */
306 /************************************************/
307 /*************** Structures ********************/
308 /************************************************/
309 /* These are here as forward references - the
310 * full definition of these are below */
312 struct pCodeWildBlock;
313 struct pCodeRegLives;
315 /*************************************************
318 The first step in optimizing pCode is determining
319 the program flow. This information is stored in
320 single-linked lists in the for of 'from' and 'to'
321 objects with in a pcode. For example, most instructions
322 don't involve any branching. So their from branch
323 points to the pCode immediately preceding them and
324 their 'to' branch points to the pcode immediately
325 following them. A skip instruction is an example of
326 a pcode that has multiple (in this case two) elements
327 in the 'to' branch. A 'label' pcode is an where there
328 may be multiple 'from' branches.
329 *************************************************/
331 typedef struct pBranch
333 struct pCode *pc; // Next pCode in a branch
334 struct pBranch *next; /* If more than one branch
335 * the next one is here */
339 /*************************************************
342 pCode Operand structure.
343 For those assembly instructions that have arguments,
344 the pCode will have a pCodeOp in which the argument
345 can be stored. For example
349 'some_register' will be stored/referenced in a pCodeOp
351 *************************************************/
353 typedef struct pCodeOp
361 typedef struct pCodeOpBit
365 unsigned int inBitSpace: 1; /* True if in bit space, else
366 just a bit of a register */
369 typedef struct pCodeOpLit
375 typedef struct pCodeOpLit2
383 typedef struct pCodeOpImmd
386 int offset; /* low,high or upper byte of immediate value */
387 int index; /* add this to the immediate value */
388 unsigned _const:1; /* is in code space */
390 int rIdx; /* If this immd points to a register */
391 struct regs *r; /* then this is the reg. */
395 typedef struct pCodeOpLabel
401 typedef struct pCodeOpReg
403 pCodeOp pcop; // Can be either GPR or SFR
404 int rIdx; // Index into the register table
406 int instance; // byte # of Multi-byte registers
410 typedef struct pCodeOpReg2
412 pCodeOp pcop; // used by default to all references
415 int instance; // assume same instance for both operands
418 pCodeOp *pcop2; // second memory operand
421 typedef struct pCodeOpRegBit
423 pCodeOpReg pcor; // The Register containing this bit
424 int bit; // 0-7 bit number.
425 PIC_OPTYPE subtype; // The type of this register.
426 unsigned int inBitSpace: 1; /* True if in bit space, else
427 just a bit of a register */
431 typedef struct pCodeOpWild
435 struct pCodeWildBlock *pcwb;
437 int id; /* index into an array of char *'s that will match
438 * the wild card. The array is in *pcp. */
439 pCodeOp *subtype; /* Pointer to the Operand type into which this wild
440 * card will be expanded */
441 pCodeOp *matched; /* When a wild matches, we'll store a pointer to the
442 * opcode we matched */
444 pCodeOp *pcop2; /* second operand if exists */
449 /*************************************************
452 Here is the basic build block of a PIC instruction.
453 Each pic instruction will get allocated a pCode.
454 A linked list of pCodes makes a program.
456 **************************************************/
462 struct pCode *prev; // The pCode objects are linked together
463 struct pCode *next; // in doubly linked lists.
465 int seq; // sequence number
467 struct pBlock *pb; // The pBlock that contains this pCode.
469 /* "virtual functions"
470 * The pCode structure is like a base class
471 * in C++. The subsequent structures that "inherit"
472 * the pCode structure will initialize these function
473 * pointers to something useful */
474 // void (*analyze) (struct pCode *_this);
475 void (*destruct)(struct pCode *_this);
476 void (*print) (FILE *of,struct pCode *_this);
481 /*************************************************
483 **************************************************/
485 typedef struct pCodeComment
495 /*************************************************
497 **************************************************/
499 typedef struct pCodeCSource
511 /*************************************************
513 **************************************************/
515 /*************************************************
518 The Flow object is used as marker to separate
519 the assembly code into contiguous chunks. In other
520 words, everytime an instruction cause or potentially
521 causes a branch, a Flow object will be inserted into
522 the pCode chain to mark the beginning of the next
525 **************************************************/
527 typedef struct pCodeFlow
532 pCode *end; /* Last pCode in this flow. Note that
533 the first pCode is pc.next */
535 /* set **uses; * map the pCode instruction inCond and outCond conditions
536 * in this array of set's. The reason we allocate an
537 * array of pointers instead of declaring each type of
538 * usage is because there are port dependent usage definitions */
539 //int nuses; /* number of uses sets */
541 set *from; /* flow blocks that can send control to this flow block */
542 set *to; /* flow blocks to which this one can send control */
543 struct pCodeFlow *ancestor; /* The most immediate "single" pCodeFlow object that
544 * executes prior to this one. In many cases, this
545 * will be just the previous */
547 int inCond; /* Input conditions - stuff assumed defined at entry */
548 int outCond; /* Output conditions - stuff modified by flow block */
550 int firstBank; /* The first and last bank flags are the first and last */
551 int lastBank; /* register banks used within one flow object */
556 set *registers;/* Registers used in this flow */
560 /*************************************************
563 The Flow Link object is used to record information
564 about how consecutive excutive Flow objects are related.
565 The pCodeFlow objects demarcate the pCodeInstructions
566 into contiguous chunks. The FlowLink records conflicts
567 in the discontinuities. For example, if one Flow object
568 references a register in bank 0 and the next Flow object
569 references a register in bank 1, then there is a discontinuity
570 in the banking registers.
573 typedef struct pCodeFlowLink
575 pCodeFlow *pcflow; /* pointer to linked pCodeFlow object */
577 int bank_conflict; /* records bank conflicts */
581 /*************************************************
584 Here we describe all the facets of a PIC instruction
585 (expansion for the 18cxxx is also provided).
587 **************************************************/
589 typedef struct pCodeInstruction
594 PIC_OPCODE op; // The opcode of the instruction.
596 char const * const mnemonic; // Pointer to mnemonic string
598 pBranch *from; // pCodes that execute before this one
599 pBranch *to; // pCodes that execute after
600 pBranch *label; // pCode instructions that have labels
602 pCodeOp *pcop; /* Operand, if this instruction has one */
603 pCodeFlow *pcflow; /* flow block to which this instruction belongs */
604 pCodeCSource *cline; /* C Source from which this instruction was derived */
606 unsigned int num_ops; /* Number of operands (0,1,2 for mid range pics) */
607 unsigned int isModReg: 1; /* If destination is W or F, then 1==F */
608 unsigned int isBitInst: 1; /* e.g. BCF */
609 unsigned int isBranch: 1; /* True if this is a branching instruction */
610 unsigned int isSkip: 1; /* True if this is a skip instruction */
611 unsigned int isLit: 1; /* True if this instruction has an literal operand */
612 unsigned int isAccess: 1; /* True if this instruction has an access RAM operand */
613 unsigned int isFastCall: 1; /* True if this instruction has a fast call/return mode select operand */
614 unsigned int is2MemOp: 1; /* True is second operand is a memory operand VR - support for MOVFF */
615 unsigned int is2LitOp: 1; /* True if instruction takes 2 literal operands VR - support for LFSR */
617 PIC_OPCODE inverted_op; /* Opcode of instruction that's the opposite of this one */
618 unsigned int inCond; // Input conditions for this instruction
619 unsigned int outCond; // Output conditions for this instruction
621 #define PCI_MAGIC 0x6e12
622 unsigned int pci_magic; // sanity check for pci initialization
627 /*************************************************
629 **************************************************/
631 typedef struct pCodeAsmDir
633 pCodeInstruction pci;
640 /*************************************************
642 **************************************************/
644 typedef struct pCodeLabel
651 int force; /* label cannot be optimized out */
655 /*************************************************
657 **************************************************/
659 typedef struct pCodeFunction
665 char *fname; /* If NULL, then this is the end of
666 a function. Otherwise, it's the
667 start and the name is contained
670 pBranch *from; // pCodes that execute before this one
671 pBranch *to; // pCodes that execute after
672 pBranch *label; // pCode instructions that have labels
674 int ncalled; /* Number of times function is called */
676 int absblock; /* hack to emulate a block pCodes in absolute position
677 but not inside a function */
678 int stackusage; /* stack positions used in function */
683 /*************************************************
685 **************************************************/
687 typedef struct pCodeWild
690 pCodeInstruction pci;
692 int id; /* Index into the wild card array of a peepBlock
693 * - this wild card will get expanded into that pCode
694 * that is stored at this index */
696 /* Conditions on wild pcode instruction */
697 int mustBeBitSkipInst:1;
698 int mustNotBeBitSkipInst:1;
699 int invertBitSkipInst:1;
701 pCodeOp *operand; // Optional operand
702 pCodeOp *label; // Optional label
706 /*************************************************
709 Here are PIC program snippets. There's a strong
710 correlation between the eBBlocks and pBlocks.
711 SDCC subdivides a C program into managable chunks.
712 Each chunk becomes a eBBlock and ultimately in the
715 **************************************************/
717 typedef struct pBlock
719 memmap *cmemmap; /* The snippet is from this memmap */
720 char dbName; /* if cmemmap is NULL, then dbName will identify the block */
721 pCode *pcHead; /* A pointer to the first pCode in a link list of pCodes */
722 pCode *pcTail; /* A pointer to the last pCode in a link list of pCodes */
724 struct pBlock *next; /* The pBlocks will form a doubly linked list */
727 set *function_entries; /* dll of functions in this pblock */
733 unsigned visited:1; /* set true if traversed in call tree */
735 unsigned seq; /* sequence number of this pBlock */
739 /*************************************************
742 The collection of pBlock program snippets are
743 placed into a linked list that is implemented
744 in the pFile structure.
746 The pcode optimizer will parse the pFile.
748 **************************************************/
752 pBlock *pbHead; /* A pointer to the first pBlock */
753 pBlock *pbTail; /* A pointer to the last pBlock */
755 pBranch *functions; /* A SLL of functions in this pFile */
761 /*************************************************
764 The pCodeWildBlock object keeps track of the wild
765 variables, operands, and opcodes that exist in
767 **************************************************/
768 typedef struct pCodeWildBlock {
770 struct pCodePeep *pcp; // pointer back to ... I don't like this...
772 int nvars; // Number of wildcard registers in target.
773 char **vars; // array of pointers to them
775 int nops; // Number of wildcard operands in target.
776 pCodeOp **wildpCodeOps; // array of pointers to the pCodeOp's.
778 int nwildpCodes; // Number of wildcard pCodes in target/replace
779 pCode **wildpCodes; // array of pointers to the pCode's.
783 /*************************************************
786 The pCodePeep object mimics the peep hole optimizer
787 in the main SDCC src (e.g. SDCCpeeph.c). Essentially
788 there is a target pCode chain and a replacement
789 pCode chain. The target chain is compared to the
790 pCode that is generated by gen.c. If a match is
791 found then the pCode is replaced by the replacement
793 **************************************************/
794 typedef struct pCodePeep {
795 pCodeWildBlock target; // code we'd like to optimize
796 pCodeWildBlock replace; // and this is what we'll optimize it with.
799 //pBlock replace; // and this is what we'll optimize it with.
803 /* (Note: a wildcard register is a place holder. Any register
804 * can be replaced by the wildcard when the pcode is being
805 * compared to the target. */
807 /* Post Conditions. A post condition is a condition that
808 * must be either true or false before the peep rule is
809 * accepted. For example, a certain rule may be accepted
810 * if and only if the Z-bit is not used as an input to
811 * the subsequent instructions in a pCode chain.
813 unsigned int postFalseCond;
814 unsigned int postTrueCond;
818 /*************************************************
820 pCode peep command definitions
822 Here are some special commands that control the
823 way the peep hole optimizer behaves
825 **************************************************/
827 enum peepCommandTypes{
834 /*************************************************
835 peepCommand structure stores the peep commands.
837 **************************************************/
839 typedef struct peepCommand {
844 /*************************************************
847 **************************************************/
848 #define PCODE(x) ((pCode *)(x))
849 #define PCI(x) ((pCodeInstruction *)(x))
850 #define PCL(x) ((pCodeLabel *)(x))
851 #define PCF(x) ((pCodeFunction *)(x))
852 #define PCFL(x) ((pCodeFlow *)(x))
853 #define PCFLINK(x)((pCodeFlowLink *)(x))
854 #define PCW(x) ((pCodeWild *)(x))
855 #define PCCS(x) ((pCodeCSource *)(x))
856 #define PCAD(x) ((pCodeAsmDir *)(x))
858 #define PCOP(x) ((pCodeOp *)(x))
859 //#define PCOB(x) ((pCodeOpBit *)(x))
860 #define PCOL(x) ((pCodeOpLit *)(x))
861 #define PCOI(x) ((pCodeOpImmd *)(x))
862 #define PCOLAB(x) ((pCodeOpLabel *)(x))
863 #define PCOR(x) ((pCodeOpReg *)(x))
864 #define PCOR2(x) ((pCodeOpReg2 *)(x))
865 #define PCORB(x) ((pCodeOpRegBit *)(x))
866 #define PCOW(x) ((pCodeOpWild *)(x))
867 #define PCOW2(x) (PCOW(PCOW(x)->pcop2))
868 #define PBR(x) ((pBranch *)(x))
870 #define PCWB(x) ((pCodeWildBlock *)(x))
874 macros for checking pCode types
876 #define isPCI(x) ((PCODE(x)->type == PC_OPCODE))
877 #define isPCI_BRANCH(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isBranch)
878 #define isPCI_SKIP(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isSkip)
879 #define isPCI_LIT(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isLit)
880 #define isPCI_BITSKIP(x)((PCODE(x)->type == PC_OPCODE) && PCI(x)->isSkip && PCI(x)->isBitInst)
881 #define isPCFL(x) ((PCODE(x)->type == PC_FLOW))
882 #define isPCF(x) ((PCODE(x)->type == PC_FUNCTION))
883 #define isPCL(x) ((PCODE(x)->type == PC_LABEL))
884 #define isPCW(x) ((PCODE(x)->type == PC_WILD))
885 #define isPCCS(x) ((PCODE(x)->type == PC_CSOURCE))
886 #define isASMDIR(x) ((PCODE(x)->type == PC_ASMDIR))
888 #define isCALL(x) ((isPCI(x)) && (PCI(x)->op == POC_CALL))
889 #define isSTATUS_REG(r) ((r)->pc_type == PO_STATUS)
890 #define isBSR_REG(r) ((r)->pc_type == PO_BSR)
891 #define isACCESS_BANK(r) (r->accessBank)
895 #define isPCOLAB(x) ((PCOP(x)->type) == PO_LABEL)
897 /*-----------------------------------------------------------------*
899 *-----------------------------------------------------------------*/
901 pCode *pic16_newpCode (PIC_OPCODE op, pCodeOp *pcop); // Create a new pCode given an operand
902 pCode *pic16_newpCodeCharP(char *cP); // Create a new pCode given a char *
903 pCode *pic16_newpCodeInlineP(char *cP); // Create a new pCode given a char *
904 pCode *pic16_newpCodeFunction(char *g, char *f); // Create a new function
905 pCode *pic16_newpCodeLabel(char *name,int key); // Create a new label given a key
906 pCode *pic16_newpCodeLabelFORCE(char *name, int key); // Same as newpCodeLabel but label cannot be optimized out
907 pCode *pic16_newpCodeCSource(int ln, char *f, char *l); // Create a new symbol line
908 pBlock *pic16_newpCodeChain(memmap *cm,char c, pCode *pc); // Create a new pBlock
909 void pic16_printpBlock(FILE *of, pBlock *pb); // Write a pBlock to a file
910 void pic16_addpCode2pBlock(pBlock *pb, pCode *pc); // Add a pCode to a pBlock
911 void pic16_addpBlock(pBlock *pb); // Add a pBlock to a pFile
912 void pic16_copypCode(FILE *of, char dbName); // Write all pBlocks with dbName to *of
913 void pic16_movepBlock2Head(char dbName); // move pBlocks around
914 void pic16_AnalyzepCode(char dbName);
915 void pic16_AssignRegBanks(void);
916 void pic16_printCallTree(FILE *of);
917 void pCodePeepInit(void);
918 void pic16_pBlockConvert2ISR(pBlock *pb);
919 void pic16_pBlockConvert2Absolute(pBlock *pb);
920 void pic16_initDB(void);
921 void pic16_emitDB(char c, char ptype, void *p); // Add DB directives to a pBlock
922 void pic16_emitDS(char *s, char ptype, void *p);
923 void pic16_flushDB(char ptype, void *p); // Add pending DB data to a pBlock
925 pCode *pic16_newpCodeAsmDir(char *asdir, char *argfmt, ...);
927 pCodeOp *pic16_newpCodeOpLabel(char *name, int key);
928 pCodeOp *pic16_newpCodeOpImmd(char *name, int offset, int index, int code_space);
929 pCodeOp *pic16_newpCodeOpLit(int lit);
930 pCodeOp *pic16_newpCodeOpLit2(int lit, pCodeOp *arg2);
931 pCodeOp *pic16_newpCodeOpBit(char *name, int bit,int inBitSpace, PIC_OPTYPE subt);
932 pCodeOp *pic16_newpCodeOpRegFromStr(char *name);
933 pCodeOp *pic16_newpCodeOp(char *name, PIC_OPTYPE p);
934 pCodeOp *pic16_pCodeOpCopy(pCodeOp *pcop);
936 pCode * pic16_findNextInstruction(pCode *pci);
937 pCode * pic16_findNextpCode(pCode *pc, PC_TYPE pct);
938 int pic16_isPCinFlow(pCode *pc, pCode *pcflow);
939 struct regs * pic16_getRegFromInstruction(pCode *pc);
940 struct regs * pic16_getRegFromInstruction2(pCode *pc);
942 extern void pic16_pcode_test(void);
943 extern int pic16_debug_verbose;
944 extern int pic16_pcode_verbose;
946 /*-----------------------------------------------------------------*
948 *-----------------------------------------------------------------*/
950 extern pCodeOpReg pic16_pc_status;
951 extern pCodeOpReg pic16_pc_intcon;
952 extern pCodeOpReg pic16_pc_pcl;
953 extern pCodeOpReg pic16_pc_pclath;
954 extern pCodeOpReg pic16_pc_pclatu; // patch 14
955 extern pCodeOpReg pic16_pc_wreg;
956 extern pCodeOpReg pic16_pc_tosl; // patch 14
957 extern pCodeOpReg pic16_pc_tosh; // patch 14
958 extern pCodeOpReg pic16_pc_tosu; // patch 14
959 extern pCodeOpReg pic16_pc_tblptrl; // patch 15
960 extern pCodeOpReg pic16_pc_tblptrh; //
961 extern pCodeOpReg pic16_pc_tblptru; //
962 extern pCodeOpReg pic16_pc_tablat; // patch 15
963 extern pCodeOpReg pic16_pc_bsr;
964 extern pCodeOpReg pic16_pc_fsr0;
965 extern pCodeOpReg pic16_pc_fsr0l;
966 extern pCodeOpReg pic16_pc_fsr0h;
967 extern pCodeOpReg pic16_pc_fsr1l;
968 extern pCodeOpReg pic16_pc_fsr1h;
969 extern pCodeOpReg pic16_pc_fsr2l;
970 extern pCodeOpReg pic16_pc_fsr2h;
971 extern pCodeOpReg pic16_pc_indf0;
972 extern pCodeOpReg pic16_pc_postinc0;
973 extern pCodeOpReg pic16_pc_postdec0;
974 extern pCodeOpReg pic16_pc_preinc0;
975 extern pCodeOpReg pic16_pc_plusw0;
976 extern pCodeOpReg pic16_pc_indf1;
977 extern pCodeOpReg pic16_pc_postinc1;
978 extern pCodeOpReg pic16_pc_postdec1;
979 extern pCodeOpReg pic16_pc_preinc1;
980 extern pCodeOpReg pic16_pc_plusw1;
981 extern pCodeOpReg pic16_pc_indf2;
982 extern pCodeOpReg pic16_pc_postinc2;
983 extern pCodeOpReg pic16_pc_postdec2;
984 extern pCodeOpReg pic16_pc_preinc2;
985 extern pCodeOpReg pic16_pc_plusw2;
986 extern pCodeOpReg pic16_pc_prodl;
987 extern pCodeOpReg pic16_pc_prodh;
989 extern pCodeOpReg pic16_pc_eecon1;
990 extern pCodeOpReg pic16_pc_eecon2;
991 extern pCodeOpReg pic16_pc_eedata;
992 extern pCodeOpReg pic16_pc_eeadr;
994 extern pCodeOpReg pic16_pc_kzero;
995 extern pCodeOpReg pic16_pc_wsave; /* wsave and ssave are used to save W and the Status */
996 extern pCodeOpReg pic16_pc_ssave; /* registers during an interrupt */
999 #endif // __PCODE_H__
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