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 */
304 PC_INFO /* pCode informatio node, used primarily in optimizing */
308 /***********************************************************************
309 * INFO_TYPE - information node types
310 ***********************************************************************/
314 INF_OPTIMIZATION, /* structure contains optimization information */
319 /***********************************************************************
320 * OPT_TYPE - optimization node types
321 ***********************************************************************/
325 OPT_BEGIN, /* mark beginning of optimization block */
326 OPT_END, /* mark ending of optimization block */
331 /************************************************/
332 /*************** Structures ********************/
333 /************************************************/
334 /* These are here as forward references - the
335 * full definition of these are below */
337 struct pCodeWildBlock;
338 struct pCodeRegLives;
340 /*************************************************
343 The first step in optimizing pCode is determining
344 the program flow. This information is stored in
345 single-linked lists in the for of 'from' and 'to'
346 objects with in a pcode. For example, most instructions
347 don't involve any branching. So their from branch
348 points to the pCode immediately preceding them and
349 their 'to' branch points to the pcode immediately
350 following them. A skip instruction is an example of
351 a pcode that has multiple (in this case two) elements
352 in the 'to' branch. A 'label' pcode is an where there
353 may be multiple 'from' branches.
354 *************************************************/
356 typedef struct pBranch
358 struct pCode *pc; // Next pCode in a branch
359 struct pBranch *next; /* If more than one branch
360 * the next one is here */
364 /*************************************************
367 pCode Operand structure.
368 For those assembly instructions that have arguments,
369 the pCode will have a pCodeOp in which the argument
370 can be stored. For example
374 'some_register' will be stored/referenced in a pCodeOp
376 *************************************************/
378 typedef struct pCodeOp
386 typedef struct pCodeOpBit
390 unsigned int inBitSpace: 1; /* True if in bit space, else
391 just a bit of a register */
394 typedef struct pCodeOpLit
400 typedef struct pCodeOpLit2
408 typedef struct pCodeOpImmd
411 int offset; /* low,high or upper byte of immediate value */
412 int index; /* add this to the immediate value */
413 unsigned _const:1; /* is in code space */
415 int rIdx; /* If this immd points to a register */
416 struct regs *r; /* then this is the reg. */
420 typedef struct pCodeOpLabel
426 typedef struct pCodeOpReg
428 pCodeOp pcop; // Can be either GPR or SFR
429 int rIdx; // Index into the register table
431 int instance; // byte # of Multi-byte registers
435 typedef struct pCodeOpReg2
437 pCodeOp pcop; // used by default to all references
440 int instance; // assume same instance for both operands
443 pCodeOp *pcop2; // second memory operand
446 typedef struct pCodeOpRegBit
448 pCodeOpReg pcor; // The Register containing this bit
449 int bit; // 0-7 bit number.
450 PIC_OPTYPE subtype; // The type of this register.
451 unsigned int inBitSpace: 1; /* True if in bit space, else
452 just a bit of a register */
456 typedef struct pCodeOpWild
460 struct pCodeWildBlock *pcwb;
462 int id; /* index into an array of char *'s that will match
463 * the wild card. The array is in *pcp. */
464 pCodeOp *subtype; /* Pointer to the Operand type into which this wild
465 * card will be expanded */
466 pCodeOp *matched; /* When a wild matches, we'll store a pointer to the
467 * opcode we matched */
469 pCodeOp *pcop2; /* second operand if exists */
474 typedef struct pCodeOpOpt
478 OPT_TYPE type; /* optimization node type */
480 char *key; /* key by which a block is identified */
485 /*************************************************
488 Here is the basic build block of a PIC instruction.
489 Each pic instruction will get allocated a pCode.
490 A linked list of pCodes makes a program.
492 **************************************************/
498 struct pCode *prev; // The pCode objects are linked together
499 struct pCode *next; // in doubly linked lists.
501 int seq; // sequence number
503 struct pBlock *pb; // The pBlock that contains this pCode.
505 /* "virtual functions"
506 * The pCode structure is like a base class
507 * in C++. The subsequent structures that "inherit"
508 * the pCode structure will initialize these function
509 * pointers to something useful */
510 // void (*analyze) (struct pCode *_this);
511 void (*destruct)(struct pCode *_this);
512 void (*print) (FILE *of,struct pCode *_this);
517 /*************************************************
519 **************************************************/
521 typedef struct pCodeComment
531 /*************************************************
533 **************************************************/
535 typedef struct pCodeCSource
547 /*************************************************
549 **************************************************/
551 /*************************************************
554 The Flow object is used as marker to separate
555 the assembly code into contiguous chunks. In other
556 words, everytime an instruction cause or potentially
557 causes a branch, a Flow object will be inserted into
558 the pCode chain to mark the beginning of the next
561 **************************************************/
563 typedef struct pCodeFlow
568 pCode *end; /* Last pCode in this flow. Note that
569 the first pCode is pc.next */
571 /* set **uses; * map the pCode instruction inCond and outCond conditions
572 * in this array of set's. The reason we allocate an
573 * array of pointers instead of declaring each type of
574 * usage is because there are port dependent usage definitions */
575 //int nuses; /* number of uses sets */
577 set *from; /* flow blocks that can send control to this flow block */
578 set *to; /* flow blocks to which this one can send control */
579 struct pCodeFlow *ancestor; /* The most immediate "single" pCodeFlow object that
580 * executes prior to this one. In many cases, this
581 * will be just the previous */
583 int inCond; /* Input conditions - stuff assumed defined at entry */
584 int outCond; /* Output conditions - stuff modified by flow block */
586 int firstBank; /* The first and last bank flags are the first and last */
587 int lastBank; /* register banks used within one flow object */
592 set *registers;/* Registers used in this flow */
596 /*************************************************
599 The Flow Link object is used to record information
600 about how consecutive excutive Flow objects are related.
601 The pCodeFlow objects demarcate the pCodeInstructions
602 into contiguous chunks. The FlowLink records conflicts
603 in the discontinuities. For example, if one Flow object
604 references a register in bank 0 and the next Flow object
605 references a register in bank 1, then there is a discontinuity
606 in the banking registers.
609 typedef struct pCodeFlowLink
611 pCodeFlow *pcflow; /* pointer to linked pCodeFlow object */
613 int bank_conflict; /* records bank conflicts */
617 /*************************************************
620 Here we describe all the facets of a PIC instruction
621 (expansion for the 18cxxx is also provided).
623 **************************************************/
625 typedef struct pCodeInstruction
630 PIC_OPCODE op; // The opcode of the instruction.
632 char const * const mnemonic; // Pointer to mnemonic string
634 pBranch *from; // pCodes that execute before this one
635 pBranch *to; // pCodes that execute after
636 pBranch *label; // pCode instructions that have labels
638 pCodeOp *pcop; /* Operand, if this instruction has one */
639 pCodeFlow *pcflow; /* flow block to which this instruction belongs */
640 pCodeCSource *cline; /* C Source from which this instruction was derived */
642 unsigned int num_ops; /* Number of operands (0,1,2 for mid range pics) */
643 unsigned int isModReg: 1; /* If destination is W or F, then 1==F */
644 unsigned int isBitInst: 1; /* e.g. BCF */
645 unsigned int isBranch: 1; /* True if this is a branching instruction */
646 unsigned int isSkip: 1; /* True if this is a skip instruction */
647 unsigned int isLit: 1; /* True if this instruction has an literal operand */
648 unsigned int isAccess: 1; /* True if this instruction has an access RAM operand */
649 unsigned int isFastCall: 1; /* True if this instruction has a fast call/return mode select operand */
650 unsigned int is2MemOp: 1; /* True is second operand is a memory operand VR - support for MOVFF */
651 unsigned int is2LitOp: 1; /* True if instruction takes 2 literal operands VR - support for LFSR */
653 PIC_OPCODE inverted_op; /* Opcode of instruction that's the opposite of this one */
654 unsigned int inCond; // Input conditions for this instruction
655 unsigned int outCond; // Output conditions for this instruction
657 #define PCI_MAGIC 0x6e12
658 unsigned int pci_magic; // sanity check for pci initialization
663 /*************************************************
665 **************************************************/
667 typedef struct pCodeAsmDir
669 pCodeInstruction pci;
676 /*************************************************
678 **************************************************/
680 typedef struct pCodeLabel
687 int force; /* label cannot be optimized out */
691 /*************************************************
693 **************************************************/
695 typedef struct pCodeFunction
701 char *fname; /* If NULL, then this is the end of
702 a function. Otherwise, it's the
703 start and the name is contained
706 pBranch *from; // pCodes that execute before this one
707 pBranch *to; // pCodes that execute after
708 pBranch *label; // pCode instructions that have labels
710 int ncalled; /* Number of times function is called */
712 int absblock; /* hack to emulate a block pCodes in absolute position
713 but not inside a function */
714 int stackusage; /* stack positions used in function */
719 /*************************************************
721 **************************************************/
723 typedef struct pCodeWild
726 pCodeInstruction pci;
728 int id; /* Index into the wild card array of a peepBlock
729 * - this wild card will get expanded into that pCode
730 * that is stored at this index */
732 /* Conditions on wild pcode instruction */
733 int mustBeBitSkipInst:1;
734 int mustNotBeBitSkipInst:1;
735 int invertBitSkipInst:1;
737 pCodeOp *operand; // Optional operand
738 pCodeOp *label; // Optional label
743 /*************************************************
746 Here are stored generic informaton
747 *************************************************/
752 INFO_TYPE type; /* info node type */
754 pCodeOp *oper1; /* info node arguments */
758 /*************************************************
761 Here are PIC program snippets. There's a strong
762 correlation between the eBBlocks and pBlocks.
763 SDCC subdivides a C program into managable chunks.
764 Each chunk becomes a eBBlock and ultimately in the
767 **************************************************/
769 typedef struct pBlock
771 memmap *cmemmap; /* The snippet is from this memmap */
772 char dbName; /* if cmemmap is NULL, then dbName will identify the block */
773 pCode *pcHead; /* A pointer to the first pCode in a link list of pCodes */
774 pCode *pcTail; /* A pointer to the last pCode in a link list of pCodes */
776 struct pBlock *next; /* The pBlocks will form a doubly linked list */
779 set *function_entries; /* dll of functions in this pblock */
785 unsigned visited:1; /* set true if traversed in call tree */
787 unsigned seq; /* sequence number of this pBlock */
791 /*************************************************
794 The collection of pBlock program snippets are
795 placed into a linked list that is implemented
796 in the pFile structure.
798 The pcode optimizer will parse the pFile.
800 **************************************************/
804 pBlock *pbHead; /* A pointer to the first pBlock */
805 pBlock *pbTail; /* A pointer to the last pBlock */
807 pBranch *functions; /* A SLL of functions in this pFile */
813 /*************************************************
816 The pCodeWildBlock object keeps track of the wild
817 variables, operands, and opcodes that exist in
819 **************************************************/
820 typedef struct pCodeWildBlock {
822 struct pCodePeep *pcp; // pointer back to ... I don't like this...
824 int nvars; // Number of wildcard registers in target.
825 char **vars; // array of pointers to them
827 int nops; // Number of wildcard operands in target.
828 pCodeOp **wildpCodeOps; // array of pointers to the pCodeOp's.
830 int nwildpCodes; // Number of wildcard pCodes in target/replace
831 pCode **wildpCodes; // array of pointers to the pCode's.
835 /*************************************************
838 The pCodePeep object mimics the peep hole optimizer
839 in the main SDCC src (e.g. SDCCpeeph.c). Essentially
840 there is a target pCode chain and a replacement
841 pCode chain. The target chain is compared to the
842 pCode that is generated by gen.c. If a match is
843 found then the pCode is replaced by the replacement
845 **************************************************/
846 typedef struct pCodePeep {
847 pCodeWildBlock target; // code we'd like to optimize
848 pCodeWildBlock replace; // and this is what we'll optimize it with.
851 //pBlock replace; // and this is what we'll optimize it with.
855 /* (Note: a wildcard register is a place holder. Any register
856 * can be replaced by the wildcard when the pcode is being
857 * compared to the target. */
859 /* Post Conditions. A post condition is a condition that
860 * must be either true or false before the peep rule is
861 * accepted. For example, a certain rule may be accepted
862 * if and only if the Z-bit is not used as an input to
863 * the subsequent instructions in a pCode chain.
865 unsigned int postFalseCond;
866 unsigned int postTrueCond;
870 /*************************************************
872 pCode peep command definitions
874 Here are some special commands that control the
875 way the peep hole optimizer behaves
877 **************************************************/
879 enum peepCommandTypes{
886 /*************************************************
887 peepCommand structure stores the peep commands.
889 **************************************************/
891 typedef struct peepCommand {
896 /*************************************************
899 **************************************************/
900 #define PCODE(x) ((pCode *)(x))
901 #define PCI(x) ((pCodeInstruction *)(x))
902 #define PCL(x) ((pCodeLabel *)(x))
903 #define PCF(x) ((pCodeFunction *)(x))
904 #define PCFL(x) ((pCodeFlow *)(x))
905 #define PCFLINK(x)((pCodeFlowLink *)(x))
906 #define PCW(x) ((pCodeWild *)(x))
907 #define PCCS(x) ((pCodeCSource *)(x))
908 #define PCAD(x) ((pCodeAsmDir *)(x))
910 #define PCOP(x) ((pCodeOp *)(x))
911 //#define PCOB(x) ((pCodeOpBit *)(x))
912 #define PCOL(x) ((pCodeOpLit *)(x))
913 #define PCOI(x) ((pCodeOpImmd *)(x))
914 #define PCOLAB(x) ((pCodeOpLabel *)(x))
915 #define PCOR(x) ((pCodeOpReg *)(x))
916 #define PCOR2(x) ((pCodeOpReg2 *)(x))
917 #define PCORB(x) ((pCodeOpRegBit *)(x))
918 #define PCOO(x) ((pCodeOpOpt *)(x))
919 #define PCOW(x) ((pCodeOpWild *)(x))
920 #define PCOW2(x) (PCOW(PCOW(x)->pcop2))
921 #define PBR(x) ((pBranch *)(x))
923 #define PCWB(x) ((pCodeWildBlock *)(x))
927 macros for checking pCode types
929 #define isPCI(x) ((PCODE(x)->type == PC_OPCODE))
930 #define isPCI_BRANCH(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isBranch)
931 #define isPCI_SKIP(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isSkip)
932 #define isPCI_LIT(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isLit)
933 #define isPCI_BITSKIP(x)((PCODE(x)->type == PC_OPCODE) && PCI(x)->isSkip && PCI(x)->isBitInst)
934 #define isPCFL(x) ((PCODE(x)->type == PC_FLOW))
935 #define isPCF(x) ((PCODE(x)->type == PC_FUNCTION))
936 #define isPCL(x) ((PCODE(x)->type == PC_LABEL))
937 #define isPCW(x) ((PCODE(x)->type == PC_WILD))
938 #define isPCCS(x) ((PCODE(x)->type == PC_CSOURCE))
939 #define isASMDIR(x) ((PCODE(x)->type == PC_ASMDIR))
941 #define isCALL(x) ((isPCI(x)) && (PCI(x)->op == POC_CALL))
942 #define isSTATUS_REG(r) ((r)->pc_type == PO_STATUS)
943 #define isBSR_REG(r) ((r)->pc_type == PO_BSR)
944 #define isACCESS_BANK(r) (r->accessBank)
948 #define isPCOLAB(x) ((PCOP(x)->type) == PO_LABEL)
950 /*-----------------------------------------------------------------*
952 *-----------------------------------------------------------------*/
954 pCode *pic16_newpCode (PIC_OPCODE op, pCodeOp *pcop); // Create a new pCode given an operand
955 pCode *pic16_newpCodeCharP(char *cP); // Create a new pCode given a char *
956 pCode *pic16_newpCodeInlineP(char *cP); // Create a new pCode given a char *
957 pCode *pic16_newpCodeFunction(char *g, char *f); // Create a new function
958 pCode *pic16_newpCodeLabel(char *name,int key); // Create a new label given a key
959 pCode *pic16_newpCodeLabelFORCE(char *name, int key); // Same as newpCodeLabel but label cannot be optimized out
960 pCode *pic16_newpCodeCSource(int ln, char *f, char *l); // Create a new symbol line
961 pBlock *pic16_newpCodeChain(memmap *cm,char c, pCode *pc); // Create a new pBlock
962 void pic16_printpBlock(FILE *of, pBlock *pb); // Write a pBlock to a file
963 void pic16_addpCode2pBlock(pBlock *pb, pCode *pc); // Add a pCode to a pBlock
964 void pic16_addpBlock(pBlock *pb); // Add a pBlock to a pFile
965 void pic16_copypCode(FILE *of, char dbName); // Write all pBlocks with dbName to *of
966 void pic16_movepBlock2Head(char dbName); // move pBlocks around
967 void pic16_AnalyzepCode(char dbName);
968 void pic16_AssignRegBanks(void);
969 void pic16_printCallTree(FILE *of);
970 void pCodePeepInit(void);
971 void pic16_pBlockConvert2ISR(pBlock *pb);
972 void pic16_pBlockConvert2Absolute(pBlock *pb);
973 void pic16_initDB(void);
974 void pic16_emitDB(char c, char ptype, void *p); // Add DB directives to a pBlock
975 void pic16_emitDS(char *s, char ptype, void *p);
976 void pic16_flushDB(char ptype, void *p); // Add pending DB data to a pBlock
978 pCode *pic16_newpCodeAsmDir(char *asdir, char *argfmt, ...);
980 pCodeOp *pic16_newpCodeOpLabel(char *name, int key);
981 pCodeOp *pic16_newpCodeOpImmd(char *name, int offset, int index, int code_space);
982 pCodeOp *pic16_newpCodeOpLit(int lit);
983 pCodeOp *pic16_newpCodeOpLit2(int lit, pCodeOp *arg2);
984 pCodeOp *pic16_newpCodeOpBit(char *name, int bit,int inBitSpace, PIC_OPTYPE subt);
985 pCodeOp *pic16_newpCodeOpRegFromStr(char *name);
986 pCodeOp *pic16_newpCodeOp(char *name, PIC_OPTYPE p);
987 pCodeOp *pic16_pCodeOpCopy(pCodeOp *pcop);
989 pCode * pic16_findNextInstruction(pCode *pci);
990 pCode * pic16_findNextpCode(pCode *pc, PC_TYPE pct);
991 int pic16_isPCinFlow(pCode *pc, pCode *pcflow);
992 struct regs * pic16_getRegFromInstruction(pCode *pc);
993 struct regs * pic16_getRegFromInstruction2(pCode *pc);
995 extern void pic16_pcode_test(void);
996 extern int pic16_debug_verbose;
997 extern int pic16_pcode_verbose;
999 /*-----------------------------------------------------------------*
1001 *-----------------------------------------------------------------*/
1003 extern pCodeOpReg pic16_pc_status;
1004 extern pCodeOpReg pic16_pc_intcon;
1005 extern pCodeOpReg pic16_pc_pcl;
1006 extern pCodeOpReg pic16_pc_pclath;
1007 extern pCodeOpReg pic16_pc_pclatu; // patch 14
1008 extern pCodeOpReg pic16_pc_wreg;
1009 extern pCodeOpReg pic16_pc_tosl; // patch 14
1010 extern pCodeOpReg pic16_pc_tosh; // patch 14
1011 extern pCodeOpReg pic16_pc_tosu; // patch 14
1012 extern pCodeOpReg pic16_pc_tblptrl; // patch 15
1013 extern pCodeOpReg pic16_pc_tblptrh; //
1014 extern pCodeOpReg pic16_pc_tblptru; //
1015 extern pCodeOpReg pic16_pc_tablat; // patch 15
1016 extern pCodeOpReg pic16_pc_bsr;
1017 extern pCodeOpReg pic16_pc_fsr0;
1018 extern pCodeOpReg pic16_pc_fsr0l;
1019 extern pCodeOpReg pic16_pc_fsr0h;
1020 extern pCodeOpReg pic16_pc_fsr1l;
1021 extern pCodeOpReg pic16_pc_fsr1h;
1022 extern pCodeOpReg pic16_pc_fsr2l;
1023 extern pCodeOpReg pic16_pc_fsr2h;
1024 extern pCodeOpReg pic16_pc_indf0;
1025 extern pCodeOpReg pic16_pc_postinc0;
1026 extern pCodeOpReg pic16_pc_postdec0;
1027 extern pCodeOpReg pic16_pc_preinc0;
1028 extern pCodeOpReg pic16_pc_plusw0;
1029 extern pCodeOpReg pic16_pc_indf1;
1030 extern pCodeOpReg pic16_pc_postinc1;
1031 extern pCodeOpReg pic16_pc_postdec1;
1032 extern pCodeOpReg pic16_pc_preinc1;
1033 extern pCodeOpReg pic16_pc_plusw1;
1034 extern pCodeOpReg pic16_pc_indf2;
1035 extern pCodeOpReg pic16_pc_postinc2;
1036 extern pCodeOpReg pic16_pc_postdec2;
1037 extern pCodeOpReg pic16_pc_preinc2;
1038 extern pCodeOpReg pic16_pc_plusw2;
1039 extern pCodeOpReg pic16_pc_prodl;
1040 extern pCodeOpReg pic16_pc_prodh;
1042 extern pCodeOpReg pic16_pc_eecon1;
1043 extern pCodeOpReg pic16_pc_eecon2;
1044 extern pCodeOpReg pic16_pc_eedata;
1045 extern pCodeOpReg pic16_pc_eeadr;
1047 extern pCodeOpReg pic16_pc_kzero;
1048 extern pCodeOpReg pic16_pc_wsave; /* wsave and ssave are used to save W and the Status */
1049 extern pCodeOpReg pic16_pc_ssave; /* registers during an interrupt */
1052 #endif // __PCODE_H__