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 */
270 // POC_TRIS , // To be removed
271 POC_TBLRD, // patch 15
272 POC_TBLRD_POSTINC, //
273 POC_TBLRD_POSTDEC, //
276 POC_TBLWT_POSTINC, //
277 POC_TBLWT_POSTDEC, //
278 POC_TBLWT_PREINC, // patch 15
286 /***********************************************************************
287 * PC_TYPE - pCode Types
288 ***********************************************************************/
292 PC_COMMENT=0, /* pCode is a comment */
293 PC_INLINE, /* user's inline code */
294 PC_OPCODE, /* PORT dependent opcode */
295 PC_LABEL, /* assembly label */
296 PC_FLOW, /* flow analysis */
297 PC_FUNCTION, /* Function start or end */
298 PC_WILD, /* wildcard - an opcode place holder used
299 * in the pCode peep hole optimizer */
300 PC_CSOURCE, /* C-Source Line */
301 PC_ASMDIR, /* Assembler directive */
302 PC_BAD /* Mark the pCode object as being bad */
305 /************************************************/
306 /*************** Structures ********************/
307 /************************************************/
308 /* These are here as forward references - the
309 * full definition of these are below */
311 struct pCodeWildBlock;
312 struct pCodeRegLives;
314 /*************************************************
317 The first step in optimizing pCode is determining
318 the program flow. This information is stored in
319 single-linked lists in the for of 'from' and 'to'
320 objects with in a pcode. For example, most instructions
321 don't involve any branching. So their from branch
322 points to the pCode immediately preceding them and
323 their 'to' branch points to the pcode immediately
324 following them. A skip instruction is an example of
325 a pcode that has multiple (in this case two) elements
326 in the 'to' branch. A 'label' pcode is an where there
327 may be multiple 'from' branches.
328 *************************************************/
330 typedef struct pBranch
332 struct pCode *pc; // Next pCode in a branch
333 struct pBranch *next; /* If more than one branch
334 * the next one is here */
338 /*************************************************
341 pCode Operand structure.
342 For those assembly instructions that have arguments,
343 the pCode will have a pCodeOp in which the argument
344 can be stored. For example
348 'some_register' will be stored/referenced in a pCodeOp
350 *************************************************/
352 typedef struct pCodeOp
360 typedef struct pCodeOpBit
364 unsigned int inBitSpace: 1; /* True if in bit space, else
365 just a bit of a register */
368 typedef struct pCodeOpLit
374 typedef struct pCodeOpLit2
382 typedef struct pCodeOpImmd
385 int offset; /* low,high or upper byte of immediate value */
386 int index; /* add this to the immediate value */
387 unsigned _const:1; /* is in code space */
389 int rIdx; /* If this immd points to a register */
390 struct regs *r; /* then this is the reg. */
394 typedef struct pCodeOpLabel
400 typedef struct pCodeOpReg
402 pCodeOp pcop; // Can be either GPR or SFR
403 int rIdx; // Index into the register table
405 int instance; // byte # of Multi-byte registers
409 typedef struct pCodeOpReg2
411 pCodeOp pcop; // used by default to all references
414 int instance; // assume same instance for both operands
417 pCodeOp *pcop2; // second memory operand
420 typedef struct pCodeOpRegBit
422 pCodeOpReg pcor; // The Register containing this bit
423 int bit; // 0-7 bit number.
424 PIC_OPTYPE subtype; // The type of this register.
425 unsigned int inBitSpace: 1; /* True if in bit space, else
426 just a bit of a register */
430 typedef struct pCodeOpWild
434 struct pCodeWildBlock *pcwb;
436 int id; /* index into an array of char *'s that will match
437 * the wild card. The array is in *pcp. */
438 pCodeOp *subtype; /* Pointer to the Operand type into which this wild
439 * card will be expanded */
440 pCodeOp *matched; /* When a wild matches, we'll store a pointer to the
441 * opcode we matched */
446 /*************************************************
449 Here is the basic build block of a PIC instruction.
450 Each pic instruction will get allocated a pCode.
451 A linked list of pCodes makes a program.
453 **************************************************/
459 struct pCode *prev; // The pCode objects are linked together
460 struct pCode *next; // in doubly linked lists.
462 int seq; // sequence number
464 struct pBlock *pb; // The pBlock that contains this pCode.
466 /* "virtual functions"
467 * The pCode structure is like a base class
468 * in C++. The subsequent structures that "inherit"
469 * the pCode structure will initialize these function
470 * pointers to something useful */
471 // void (*analyze) (struct pCode *_this);
472 void (*destruct)(struct pCode *_this);
473 void (*print) (FILE *of,struct pCode *_this);
478 /*************************************************
480 **************************************************/
482 typedef struct pCodeComment
492 /*************************************************
494 **************************************************/
496 typedef struct pCodeCSource
508 /*************************************************
510 **************************************************/
512 /*************************************************
515 The Flow object is used as marker to separate
516 the assembly code into contiguous chunks. In other
517 words, everytime an instruction cause or potentially
518 causes a branch, a Flow object will be inserted into
519 the pCode chain to mark the beginning of the next
522 **************************************************/
524 typedef struct pCodeFlow
529 pCode *end; /* Last pCode in this flow. Note that
530 the first pCode is pc.next */
532 /* set **uses; * map the pCode instruction inCond and outCond conditions
533 * in this array of set's. The reason we allocate an
534 * array of pointers instead of declaring each type of
535 * usage is because there are port dependent usage definitions */
536 //int nuses; /* number of uses sets */
538 set *from; /* flow blocks that can send control to this flow block */
539 set *to; /* flow blocks to which this one can send control */
540 struct pCodeFlow *ancestor; /* The most immediate "single" pCodeFlow object that
541 * executes prior to this one. In many cases, this
542 * will be just the previous */
544 int inCond; /* Input conditions - stuff assumed defined at entry */
545 int outCond; /* Output conditions - stuff modified by flow block */
547 int firstBank; /* The first and last bank flags are the first and last */
548 int lastBank; /* register banks used within one flow object */
553 set *registers;/* Registers used in this flow */
557 /*************************************************
560 The Flow Link object is used to record information
561 about how consecutive excutive Flow objects are related.
562 The pCodeFlow objects demarcate the pCodeInstructions
563 into contiguous chunks. The FlowLink records conflicts
564 in the discontinuities. For example, if one Flow object
565 references a register in bank 0 and the next Flow object
566 references a register in bank 1, then there is a discontinuity
567 in the banking registers.
570 typedef struct pCodeFlowLink
572 pCodeFlow *pcflow; /* pointer to linked pCodeFlow object */
574 int bank_conflict; /* records bank conflicts */
578 /*************************************************
581 Here we describe all the facets of a PIC instruction
582 (expansion for the 18cxxx is also provided).
584 **************************************************/
586 typedef struct pCodeInstruction
591 PIC_OPCODE op; // The opcode of the instruction.
593 char const * const mnemonic; // Pointer to mnemonic string
595 pBranch *from; // pCodes that execute before this one
596 pBranch *to; // pCodes that execute after
597 pBranch *label; // pCode instructions that have labels
599 pCodeOp *pcop; /* Operand, if this instruction has one */
600 pCodeFlow *pcflow; /* flow block to which this instruction belongs */
601 pCodeCSource *cline; /* C Source from which this instruction was derived */
603 unsigned int num_ops; /* Number of operands (0,1,2 for mid range pics) */
604 unsigned int isModReg: 1; /* If destination is W or F, then 1==F */
605 unsigned int isBitInst: 1; /* e.g. BCF */
606 unsigned int isBranch: 1; /* True if this is a branching instruction */
607 unsigned int isSkip: 1; /* True if this is a skip instruction */
608 unsigned int isLit: 1; /* True if this instruction has an literal operand */
609 unsigned int isAccess: 1; /* True if this instruction has an access RAM operand */
610 unsigned int isFastCall: 1; /* True if this instruction has a fast call/return mode select operand */
611 unsigned int is2MemOp: 1; /* True is second operand is a memory operand VR - support for MOVFF */
612 unsigned int is2LitOp: 1; /* True if instruction takes 2 literal operands VR - support for LFSR */
614 PIC_OPCODE inverted_op; /* Opcode of instruction that's the opposite of this one */
615 unsigned int inCond; // Input conditions for this instruction
616 unsigned int outCond; // Output conditions for this instruction
618 #define PCI_MAGIC 0x6e12
619 unsigned int pci_magic; // sanity check for pci initialization
624 /*************************************************
626 **************************************************/
628 typedef struct pCodeAsmDir
630 pCodeInstruction pci;
637 /*************************************************
639 **************************************************/
641 typedef struct pCodeLabel
651 /*************************************************
653 **************************************************/
655 typedef struct pCodeFunction
661 char *fname; /* If NULL, then this is the end of
662 a function. Otherwise, it's the
663 start and the name is contained
666 pBranch *from; // pCodes that execute before this one
667 pBranch *to; // pCodes that execute after
668 pBranch *label; // pCode instructions that have labels
670 int ncalled; /* Number of times function is called */
675 /*************************************************
677 **************************************************/
679 typedef struct pCodeWild
682 pCodeInstruction pci;
684 int id; /* Index into the wild card array of a peepBlock
685 * - this wild card will get expanded into that pCode
686 * that is stored at this index */
688 /* Conditions on wild pcode instruction */
689 int mustBeBitSkipInst:1;
690 int mustNotBeBitSkipInst:1;
691 int invertBitSkipInst:1;
693 pCodeOp *operand; // Optional operand
694 pCodeOp *label; // Optional label
698 /*************************************************
701 Here are PIC program snippets. There's a strong
702 correlation between the eBBlocks and pBlocks.
703 SDCC subdivides a C program into managable chunks.
704 Each chunk becomes a eBBlock and ultimately in the
707 **************************************************/
709 typedef struct pBlock
711 memmap *cmemmap; /* The snippet is from this memmap */
712 char dbName; /* if cmemmap is NULL, then dbName will identify the block */
713 pCode *pcHead; /* A pointer to the first pCode in a link list of pCodes */
714 pCode *pcTail; /* A pointer to the last pCode in a link list of pCodes */
716 struct pBlock *next; /* The pBlocks will form a doubly linked list */
719 set *function_entries; /* dll of functions in this pblock */
725 unsigned visited:1; /* set true if traversed in call tree */
727 unsigned seq; /* sequence number of this pBlock */
731 /*************************************************
734 The collection of pBlock program snippets are
735 placed into a linked list that is implemented
736 in the pFile structure.
738 The pcode optimizer will parse the pFile.
740 **************************************************/
744 pBlock *pbHead; /* A pointer to the first pBlock */
745 pBlock *pbTail; /* A pointer to the last pBlock */
747 pBranch *functions; /* A SLL of functions in this pFile */
753 /*************************************************
756 The pCodeWildBlock object keeps track of the wild
757 variables, operands, and opcodes that exist in
759 **************************************************/
760 typedef struct pCodeWildBlock {
762 struct pCodePeep *pcp; // pointer back to ... I don't like this...
764 int nvars; // Number of wildcard registers in target.
765 char **vars; // array of pointers to them
767 int nops; // Number of wildcard operands in target.
768 pCodeOp **wildpCodeOps; // array of pointers to the pCodeOp's.
770 int nwildpCodes; // Number of wildcard pCodes in target/replace
771 pCode **wildpCodes; // array of pointers to the pCode's.
775 /*************************************************
778 The pCodePeep object mimics the peep hole optimizer
779 in the main SDCC src (e.g. SDCCpeeph.c). Essentially
780 there is a target pCode chain and a replacement
781 pCode chain. The target chain is compared to the
782 pCode that is generated by gen.c. If a match is
783 found then the pCode is replaced by the replacement
785 **************************************************/
786 typedef struct pCodePeep {
787 pCodeWildBlock target; // code we'd like to optimize
788 pCodeWildBlock replace; // and this is what we'll optimize it with.
791 //pBlock replace; // and this is what we'll optimize it with.
795 /* (Note: a wildcard register is a place holder. Any register
796 * can be replaced by the wildcard when the pcode is being
797 * compared to the target. */
799 /* Post Conditions. A post condition is a condition that
800 * must be either true or false before the peep rule is
801 * accepted. For example, a certain rule may be accepted
802 * if and only if the Z-bit is not used as an input to
803 * the subsequent instructions in a pCode chain.
805 unsigned int postFalseCond;
806 unsigned int postTrueCond;
810 /*************************************************
812 pCode peep command definitions
814 Here are some special commands that control the
815 way the peep hole optimizer behaves
817 **************************************************/
819 enum peepCommandTypes{
826 /*************************************************
827 peepCommand structure stores the peep commands.
829 **************************************************/
831 typedef struct peepCommand {
836 /*************************************************
839 **************************************************/
840 #define PCODE(x) ((pCode *)(x))
841 #define PCI(x) ((pCodeInstruction *)(x))
842 #define PCL(x) ((pCodeLabel *)(x))
843 #define PCF(x) ((pCodeFunction *)(x))
844 #define PCFL(x) ((pCodeFlow *)(x))
845 #define PCFLINK(x)((pCodeFlowLink *)(x))
846 #define PCW(x) ((pCodeWild *)(x))
847 #define PCCS(x) ((pCodeCSource *)(x))
848 #define PCAD(x) ((pCodeAsmDir *)(x))
850 #define PCOP(x) ((pCodeOp *)(x))
851 //#define PCOB(x) ((pCodeOpBit *)(x))
852 #define PCOL(x) ((pCodeOpLit *)(x))
853 #define PCOI(x) ((pCodeOpImmd *)(x))
854 #define PCOLAB(x) ((pCodeOpLabel *)(x))
855 #define PCOR(x) ((pCodeOpReg *)(x))
856 #define PCOR2(x) ((pCodeOpReg2 *)(x))
857 #define PCORB(x) ((pCodeOpRegBit *)(x))
858 #define PCOW(x) ((pCodeOpWild *)(x))
860 #define PBR(x) ((pBranch *)(x))
862 #define PCWB(x) ((pCodeWildBlock *)(x))
866 macros for checking pCode types
868 #define isPCI(x) ((PCODE(x)->type == PC_OPCODE))
869 #define isPCI_BRANCH(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isBranch)
870 #define isPCI_SKIP(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isSkip)
871 #define isPCI_LIT(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isLit)
872 #define isPCI_BITSKIP(x)((PCODE(x)->type == PC_OPCODE) && PCI(x)->isSkip && PCI(x)->isBitInst)
873 #define isPCFL(x) ((PCODE(x)->type == PC_FLOW))
874 #define isPCF(x) ((PCODE(x)->type == PC_FUNCTION))
875 #define isPCL(x) ((PCODE(x)->type == PC_LABEL))
876 #define isPCW(x) ((PCODE(x)->type == PC_WILD))
877 #define isPCCS(x) ((PCODE(x)->type == PC_CSOURCE))
878 #define isASMDIR(x) ((PCODE(x)->type == PC_ASMDIR))
880 #define isCALL(x) ((isPCI(x)) && (PCI(x)->op == POC_CALL))
881 #define isSTATUS_REG(r) ((r)->pc_type == PO_STATUS)
882 #define isBSR_REG(r) ((r)->pc_type == PO_BSR)
883 #define isACCESS_BANK(r) (r->accessBank)
887 #define isPCOLAB(x) ((PCOP(x)->type) == PO_LABEL)
889 /*-----------------------------------------------------------------*
891 *-----------------------------------------------------------------*/
893 pCode *pic16_newpCode (PIC_OPCODE op, pCodeOp *pcop); // Create a new pCode given an operand
894 pCode *pic16_newpCodeCharP(char *cP); // Create a new pCode given a char *
895 pCode *pic16_newpCodeInlineP(char *cP); // Create a new pCode given a char *
896 pCode *pic16_newpCodeFunction(char *g, char *f); // Create a new function
897 pCode *pic16_newpCodeLabel(char *name,int key); // Create a new label given a key
898 pCode *pic16_newpCodeCSource(int ln, char *f, char *l); // Create a new symbol line
899 pBlock *pic16_newpCodeChain(memmap *cm,char c, pCode *pc); // Create a new pBlock
900 void pic16_printpBlock(FILE *of, pBlock *pb); // Write a pBlock to a file
901 void pic16_addpCode2pBlock(pBlock *pb, pCode *pc); // Add a pCode to a pBlock
902 void pic16_addpBlock(pBlock *pb); // Add a pBlock to a pFile
903 void pic16_copypCode(FILE *of, char dbName); // Write all pBlocks with dbName to *of
904 void pic16_movepBlock2Head(char dbName); // move pBlocks around
905 void pic16_AnalyzepCode(char dbName);
906 void pic16_AssignRegBanks(void);
907 void pic16_printCallTree(FILE *of);
908 void pCodePeepInit(void);
909 void pic16_pBlockConvert2ISR(pBlock *pb);
910 void pic16_pBlockConvert2Absolute(pBlock *pb);
911 void pic16_emitDB(pBlock *pb, char c); // Add DB directives to a pBlock
912 void pic16_flushDB(pBlock *pb); // Add pending DB data to a pBlock
914 pCode *pic16_newpCodeAsmDir(char *asdir, char *argfmt, ...);
916 pCodeOp *pic16_newpCodeOpLabel(char *name, int key);
917 pCodeOp *pic16_newpCodeOpImmd(char *name, int offset, int index, int code_space);
918 pCodeOp *pic16_newpCodeOpLit(int lit);
919 pCodeOp *pic16_newpCodeOpLit2(int lit, pCodeOp *arg2);
920 pCodeOp *pic16_newpCodeOpBit(char *name, int bit,int inBitSpace);
921 pCodeOp *pic16_newpCodeOpRegFromStr(char *name);
922 pCodeOp *pic16_newpCodeOp(char *name, PIC_OPTYPE p);
923 pCodeOp *pic16_pCodeOpCopy(pCodeOp *pcop);
925 pCode * pic16_findNextInstruction(pCode *pci);
926 pCode * pic16_findNextpCode(pCode *pc, PC_TYPE pct);
927 int pic16_isPCinFlow(pCode *pc, pCode *pcflow);
928 struct regs * pic16_getRegFromInstruction(pCode *pc);
929 struct regs * pic16_getRegFromInstruction2(pCode *pc);
931 extern void pic16_pcode_test(void);
932 extern int pic16_debug_verbose;
933 /*-----------------------------------------------------------------*
935 *-----------------------------------------------------------------*/
937 extern pCodeOpReg pic16_pc_status;
938 extern pCodeOpReg pic16_pc_intcon;
939 extern pCodeOpReg pic16_pc_pcl;
940 extern pCodeOpReg pic16_pc_pclath;
941 extern pCodeOpReg pic16_pc_pclatu; // patch 14
942 extern pCodeOpReg pic16_pc_wreg;
943 extern pCodeOpReg pic16_pc_tosl; // patch 14
944 extern pCodeOpReg pic16_pc_tosh; // patch 14
945 extern pCodeOpReg pic16_pc_tosu; // patch 14
946 extern pCodeOpReg pic16_pc_tblptrl; // patch 15
947 extern pCodeOpReg pic16_pc_tblptrh; //
948 extern pCodeOpReg pic16_pc_tblptru; //
949 extern pCodeOpReg pic16_pc_tablat; // patch 15
950 extern pCodeOpReg pic16_pc_bsr;
951 extern pCodeOpReg pic16_pc_fsr0;
952 extern pCodeOpReg pic16_pc_fsr0l;
953 extern pCodeOpReg pic16_pc_fsr0h;
954 extern pCodeOpReg pic16_pc_fsr1l;
955 extern pCodeOpReg pic16_pc_fsr1h;
956 extern pCodeOpReg pic16_pc_fsr2l;
957 extern pCodeOpReg pic16_pc_fsr2h;
958 extern pCodeOpReg pic16_pc_indf0;
959 extern pCodeOpReg pic16_pc_postinc0;
960 extern pCodeOpReg pic16_pc_postdec0;
961 extern pCodeOpReg pic16_pc_preinc0;
962 extern pCodeOpReg pic16_pc_plusw0;
963 extern pCodeOpReg pic16_pc_indf1;
964 extern pCodeOpReg pic16_pc_postinc1;
965 extern pCodeOpReg pic16_pc_postdec1;
966 extern pCodeOpReg pic16_pc_preinc1;
967 extern pCodeOpReg pic16_pc_plusw1;
968 extern pCodeOpReg pic16_pc_indf2;
969 extern pCodeOpReg pic16_pc_postinc2;
970 extern pCodeOpReg pic16_pc_postdec2;
971 extern pCodeOpReg pic16_pc_preinc2;
972 extern pCodeOpReg pic16_pc_plusw2;
973 extern pCodeOpReg pic16_pc_prodl;
974 extern pCodeOpReg pic16_pc_prodh;
976 extern pCodeOpReg pic16_pc_kzero;
977 extern pCodeOpReg pic16_pc_wsave; /* wsave and ssave are used to save W and the Status */
978 extern pCodeOpReg pic16_pc_ssave; /* registers during an interrupt */
981 #endif // __PCODE_H__