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 */
288 /***********************************************************************
289 * PC_TYPE - pCode Types
290 ***********************************************************************/
294 PC_COMMENT=0, /* pCode is a comment */
295 PC_INLINE, /* user's inline code */
296 PC_OPCODE, /* PORT dependent opcode */
297 PC_LABEL, /* assembly label */
298 PC_FLOW, /* flow analysis */
299 PC_FUNCTION, /* Function start or end */
300 PC_WILD, /* wildcard - an opcode place holder used
301 * in the pCode peep hole optimizer */
302 PC_CSOURCE, /* C-Source Line */
303 PC_ASMDIR, /* Assembler directive */
304 PC_BAD, /* Mark the pCode object as being bad */
305 PC_INFO /* pCode informatio node, used primarily in optimizing */
309 /***********************************************************************
310 * INFO_TYPE - information node types
311 ***********************************************************************/
315 INF_OPTIMIZATION, /* structure contains optimization information */
316 INF_LOCALREGS /* structure contains local register information */
321 /***********************************************************************
322 * OPT_TYPE - optimization node types
323 ***********************************************************************/
327 OPT_BEGIN, /* mark beginning of optimization block */
328 OPT_END, /* mark ending of optimization block */
331 /***********************************************************************
332 * LR_TYPE - optimization node types
333 ***********************************************************************/
337 LR_ENTRY_BEGIN, /* mark beginning of optimization block */
338 LR_ENTRY_END, /* mark ending of optimization block */
344 /************************************************/
345 /*************** Structures ********************/
346 /************************************************/
347 /* These are here as forward references - the
348 * full definition of these are below */
350 struct pCodeWildBlock;
351 struct pCodeRegLives;
353 /*************************************************
356 The first step in optimizing pCode is determining
357 the program flow. This information is stored in
358 single-linked lists in the for of 'from' and 'to'
359 objects with in a pcode. For example, most instructions
360 don't involve any branching. So their from branch
361 points to the pCode immediately preceding them and
362 their 'to' branch points to the pcode immediately
363 following them. A skip instruction is an example of
364 a pcode that has multiple (in this case two) elements
365 in the 'to' branch. A 'label' pcode is an where there
366 may be multiple 'from' branches.
367 *************************************************/
369 typedef struct pBranch
371 struct pCode *pc; // Next pCode in a branch
372 struct pBranch *next; /* If more than one branch
373 * the next one is here */
377 /*************************************************
380 pCode Operand structure.
381 For those assembly instructions that have arguments,
382 the pCode will have a pCodeOp in which the argument
383 can be stored. For example
387 'some_register' will be stored/referenced in a pCodeOp
389 *************************************************/
391 typedef struct pCodeOp
399 typedef struct pCodeOpBit
403 unsigned int inBitSpace: 1; /* True if in bit space, else
404 just a bit of a register */
407 typedef struct pCodeOpLit
413 typedef struct pCodeOpLit2
421 typedef struct pCodeOpImmd
424 int offset; /* low,high or upper byte of immediate value */
425 int index; /* add this to the immediate value */
426 unsigned _const:1; /* is in code space */
428 int rIdx; /* If this immd points to a register */
429 struct regs *r; /* then this is the reg. */
433 typedef struct pCodeOpLabel
439 typedef struct pCodeOpReg
441 pCodeOp pcop; // Can be either GPR or SFR
442 int rIdx; // Index into the register table
444 int instance; // byte # of Multi-byte registers
448 typedef struct pCodeOpReg2
450 pCodeOp pcop; // used by default to all references
453 int instance; // assume same instance for both operands
456 pCodeOp *pcop2; // second memory operand
459 typedef struct pCodeOpRegBit
461 pCodeOpReg pcor; // The Register containing this bit
462 int bit; // 0-7 bit number.
463 PIC_OPTYPE subtype; // The type of this register.
464 unsigned int inBitSpace: 1; /* True if in bit space, else
465 just a bit of a register */
469 typedef struct pCodeOpWild
473 struct pCodeWildBlock *pcwb;
475 int id; /* index into an array of char *'s that will match
476 * the wild card. The array is in *pcp. */
477 pCodeOp *subtype; /* Pointer to the Operand type into which this wild
478 * card will be expanded */
479 pCodeOp *matched; /* When a wild matches, we'll store a pointer to the
480 * opcode we matched */
482 pCodeOp *pcop2; /* second operand if exists */
487 typedef struct pCodeOpOpt
491 OPT_TYPE type; /* optimization node type */
493 char *key; /* key by which a block is identified */
496 typedef struct pCodeOpLocalReg
503 /*************************************************
506 Here is the basic build block of a PIC instruction.
507 Each pic instruction will get allocated a pCode.
508 A linked list of pCodes makes a program.
510 **************************************************/
516 struct pCode *prev; // The pCode objects are linked together
517 struct pCode *next; // in doubly linked lists.
519 int seq; // sequence number
521 struct pBlock *pb; // The pBlock that contains this pCode.
523 /* "virtual functions"
524 * The pCode structure is like a base class
525 * in C++. The subsequent structures that "inherit"
526 * the pCode structure will initialize these function
527 * pointers to something useful */
528 // void (*analyze) (struct pCode *_this);
529 void (*destruct)(struct pCode *_this);
530 void (*print) (FILE *of,struct pCode *_this);
535 /*************************************************
537 **************************************************/
539 typedef struct pCodeComment
549 /*************************************************
551 **************************************************/
553 typedef struct pCodeCSource
565 /*************************************************
567 **************************************************/
569 /*************************************************
572 The Flow object is used as marker to separate
573 the assembly code into contiguous chunks. In other
574 words, everytime an instruction cause or potentially
575 causes a branch, a Flow object will be inserted into
576 the pCode chain to mark the beginning of the next
579 **************************************************/
581 typedef struct pCodeFlow
586 pCode *end; /* Last pCode in this flow. Note that
587 the first pCode is pc.next */
589 /* set **uses; * map the pCode instruction inCond and outCond conditions
590 * in this array of set's. The reason we allocate an
591 * array of pointers instead of declaring each type of
592 * usage is because there are port dependent usage definitions */
593 //int nuses; /* number of uses sets */
595 set *from; /* flow blocks that can send control to this flow block */
596 set *to; /* flow blocks to which this one can send control */
597 struct pCodeFlow *ancestor; /* The most immediate "single" pCodeFlow object that
598 * executes prior to this one. In many cases, this
599 * will be just the previous */
601 int inCond; /* Input conditions - stuff assumed defined at entry */
602 int outCond; /* Output conditions - stuff modified by flow block */
604 int firstBank; /* The first and last bank flags are the first and last */
605 int lastBank; /* register banks used within one flow object */
610 set *registers;/* Registers used in this flow */
614 /*************************************************
617 The Flow Link object is used to record information
618 about how consecutive excutive Flow objects are related.
619 The pCodeFlow objects demarcate the pCodeInstructions
620 into contiguous chunks. The FlowLink records conflicts
621 in the discontinuities. For example, if one Flow object
622 references a register in bank 0 and the next Flow object
623 references a register in bank 1, then there is a discontinuity
624 in the banking registers.
627 typedef struct pCodeFlowLink
629 pCodeFlow *pcflow; /* pointer to linked pCodeFlow object */
631 int bank_conflict; /* records bank conflicts */
635 /*************************************************
638 Here we describe all the facets of a PIC instruction
639 (expansion for the 18cxxx is also provided).
641 **************************************************/
643 typedef struct pCodeInstruction
648 PIC_OPCODE op; // The opcode of the instruction.
650 char const * const mnemonic; // Pointer to mnemonic string
652 pBranch *from; // pCodes that execute before this one
653 pBranch *to; // pCodes that execute after
654 pBranch *label; // pCode instructions that have labels
656 pCodeOp *pcop; /* Operand, if this instruction has one */
657 pCodeFlow *pcflow; /* flow block to which this instruction belongs */
658 pCodeCSource *cline; /* C Source from which this instruction was derived */
660 unsigned int num_ops; /* Number of operands (0,1,2 for mid range pics) */
661 unsigned int isModReg: 1; /* If destination is W or F, then 1==F */
662 unsigned int isBitInst: 1; /* e.g. BCF */
663 unsigned int isBranch: 1; /* True if this is a branching instruction */
664 unsigned int isSkip: 1; /* True if this is a skip instruction */
665 unsigned int isLit: 1; /* True if this instruction has an literal operand */
666 unsigned int isAccess: 1; /* True if this instruction has an access RAM operand */
667 unsigned int isFastCall: 1; /* True if this instruction has a fast call/return mode select operand */
668 unsigned int is2MemOp: 1; /* True is second operand is a memory operand VR - support for MOVFF */
669 unsigned int is2LitOp: 1; /* True if instruction takes 2 literal operands VR - support for LFSR */
671 PIC_OPCODE inverted_op; /* Opcode of instruction that's the opposite of this one */
672 unsigned int inCond; // Input conditions for this instruction
673 unsigned int outCond; // Output conditions for this instruction
675 #define PCI_MAGIC 0x6e12
676 unsigned int pci_magic; // sanity check for pci initialization
681 /*************************************************
683 **************************************************/
685 typedef struct pCodeAsmDir
687 pCodeInstruction pci;
694 /*************************************************
696 **************************************************/
698 typedef struct pCodeLabel
705 int force; /* label cannot be optimized out */
709 /*************************************************
711 **************************************************/
713 typedef struct pCodeFunction
719 char *fname; /* If NULL, then this is the end of
720 a function. Otherwise, it's the
721 start and the name is contained
724 pBranch *from; // pCodes that execute before this one
725 pBranch *to; // pCodes that execute after
726 pBranch *label; // pCode instructions that have labels
728 int ncalled; /* Number of times function is called */
730 int absblock; /* hack to emulate a block pCodes in absolute position
731 but not inside a function */
732 int stackusage; /* stack positions used in function */
737 /*************************************************
739 **************************************************/
741 typedef struct pCodeWild
744 pCodeInstruction pci;
746 int id; /* Index into the wild card array of a peepBlock
747 * - this wild card will get expanded into that pCode
748 * that is stored at this index */
750 /* Conditions on wild pcode instruction */
751 int mustBeBitSkipInst:1;
752 int mustNotBeBitSkipInst:1;
753 int invertBitSkipInst:1;
755 pCodeOp *operand; // Optional operand
756 pCodeOp *label; // Optional label
761 /*************************************************
764 Here are stored generic informaton
765 *************************************************/
766 typedef struct pCodeInfo
768 pCodeInstruction pci;
770 INFO_TYPE type; /* info node type */
772 pCodeOp *oper1; /* info node arguments */
776 /*************************************************
779 Here are PIC program snippets. There's a strong
780 correlation between the eBBlocks and pBlocks.
781 SDCC subdivides a C program into managable chunks.
782 Each chunk becomes a eBBlock and ultimately in the
785 **************************************************/
787 typedef struct pBlock
789 memmap *cmemmap; /* The snippet is from this memmap */
790 char dbName; /* if cmemmap is NULL, then dbName will identify the block */
791 pCode *pcHead; /* A pointer to the first pCode in a link list of pCodes */
792 pCode *pcTail; /* A pointer to the last pCode in a link list of pCodes */
794 struct pBlock *next; /* The pBlocks will form a doubly linked list */
797 set *function_entries; /* dll of functions in this pblock */
803 unsigned visited:1; /* set true if traversed in call tree */
805 unsigned seq; /* sequence number of this pBlock */
809 /*************************************************
812 The collection of pBlock program snippets are
813 placed into a linked list that is implemented
814 in the pFile structure.
816 The pcode optimizer will parse the pFile.
818 **************************************************/
822 pBlock *pbHead; /* A pointer to the first pBlock */
823 pBlock *pbTail; /* A pointer to the last pBlock */
825 pBranch *functions; /* A SLL of functions in this pFile */
831 /*************************************************
834 The pCodeWildBlock object keeps track of the wild
835 variables, operands, and opcodes that exist in
837 **************************************************/
838 typedef struct pCodeWildBlock {
840 struct pCodePeep *pcp; // pointer back to ... I don't like this...
842 int nvars; // Number of wildcard registers in target.
843 char **vars; // array of pointers to them
845 int nops; // Number of wildcard operands in target.
846 pCodeOp **wildpCodeOps; // array of pointers to the pCodeOp's.
848 int nwildpCodes; // Number of wildcard pCodes in target/replace
849 pCode **wildpCodes; // array of pointers to the pCode's.
853 /*************************************************
856 The pCodePeep object mimics the peep hole optimizer
857 in the main SDCC src (e.g. SDCCpeeph.c). Essentially
858 there is a target pCode chain and a replacement
859 pCode chain. The target chain is compared to the
860 pCode that is generated by gen.c. If a match is
861 found then the pCode is replaced by the replacement
863 **************************************************/
864 typedef struct pCodePeep {
865 pCodeWildBlock target; // code we'd like to optimize
866 pCodeWildBlock replace; // and this is what we'll optimize it with.
869 //pBlock replace; // and this is what we'll optimize it with.
873 /* (Note: a wildcard register is a place holder. Any register
874 * can be replaced by the wildcard when the pcode is being
875 * compared to the target. */
877 /* Post Conditions. A post condition is a condition that
878 * must be either true or false before the peep rule is
879 * accepted. For example, a certain rule may be accepted
880 * if and only if the Z-bit is not used as an input to
881 * the subsequent instructions in a pCode chain.
883 unsigned int postFalseCond;
884 unsigned int postTrueCond;
888 /*************************************************
890 pCode peep command definitions
892 Here are some special commands that control the
893 way the peep hole optimizer behaves
895 **************************************************/
897 enum peepCommandTypes{
904 /*************************************************
905 peepCommand structure stores the peep commands.
907 **************************************************/
909 typedef struct peepCommand {
914 /*************************************************
917 **************************************************/
918 #define PCODE(x) ((pCode *)(x))
919 #define PCI(x) ((pCodeInstruction *)(x))
920 #define PCL(x) ((pCodeLabel *)(x))
921 #define PCF(x) ((pCodeFunction *)(x))
922 #define PCFL(x) ((pCodeFlow *)(x))
923 #define PCFLINK(x)((pCodeFlowLink *)(x))
924 #define PCW(x) ((pCodeWild *)(x))
925 #define PCCS(x) ((pCodeCSource *)(x))
926 #define PCAD(x) ((pCodeAsmDir *)(x))
927 #define PCINF(x) ((pCodeInfo *)(x))
929 #define PCOP(x) ((pCodeOp *)(x))
930 //#define PCOB(x) ((pCodeOpBit *)(x))
931 #define PCOL(x) ((pCodeOpLit *)(x))
932 #define PCOI(x) ((pCodeOpImmd *)(x))
933 #define PCOLAB(x) ((pCodeOpLabel *)(x))
934 #define PCOR(x) ((pCodeOpReg *)(x))
935 #define PCOR2(x) ((pCodeOpReg2 *)(x))
936 #define PCORB(x) ((pCodeOpRegBit *)(x))
937 #define PCOO(x) ((pCodeOpOpt *)(x))
938 #define PCOLR(x) ((pCodeOpLocalReg *)(x))
939 #define PCOW(x) ((pCodeOpWild *)(x))
940 #define PCOW2(x) (PCOW(PCOW(x)->pcop2))
941 #define PBR(x) ((pBranch *)(x))
943 #define PCWB(x) ((pCodeWildBlock *)(x))
947 macros for checking pCode types
949 #define isPCI(x) ((PCODE(x)->type == PC_OPCODE))
950 #define isPCI_BRANCH(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isBranch)
951 #define isPCI_SKIP(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isSkip)
952 #define isPCI_LIT(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isLit)
953 #define isPCI_BITSKIP(x)((PCODE(x)->type == PC_OPCODE) && PCI(x)->isSkip && PCI(x)->isBitInst)
954 #define isPCFL(x) ((PCODE(x)->type == PC_FLOW))
955 #define isPCF(x) ((PCODE(x)->type == PC_FUNCTION))
956 #define isPCL(x) ((PCODE(x)->type == PC_LABEL))
957 #define isPCW(x) ((PCODE(x)->type == PC_WILD))
958 #define isPCCS(x) ((PCODE(x)->type == PC_CSOURCE))
959 #define isASMDIR(x) ((PCODE(x)->type == PC_ASMDIR))
961 #define isCALL(x) ((isPCI(x)) && (PCI(x)->op == POC_CALL))
962 #define isSTATUS_REG(r) ((r)->pc_type == PO_STATUS)
963 #define isBSR_REG(r) ((r)->pc_type == PO_BSR)
964 #define isACCESS_BANK(r) (r->accessBank)
968 #define isPCOLAB(x) ((PCOP(x)->type) == PO_LABEL)
970 /*-----------------------------------------------------------------*
972 *-----------------------------------------------------------------*/
974 pCode *pic16_newpCode (PIC_OPCODE op, pCodeOp *pcop); // Create a new pCode given an operand
975 pCode *pic16_newpCodeCharP(char *cP); // Create a new pCode given a char *
976 pCode *pic16_newpCodeInlineP(char *cP); // Create a new pCode given a char *
977 pCode *pic16_newpCodeFunction(char *g, char *f); // Create a new function
978 pCode *pic16_newpCodeLabel(char *name,int key); // Create a new label given a key
979 pCode *pic16_newpCodeLabelFORCE(char *name, int key); // Same as newpCodeLabel but label cannot be optimized out
980 pCode *pic16_newpCodeCSource(int ln, char *f, char *l); // Create a new symbol line
981 pBlock *pic16_newpCodeChain(memmap *cm,char c, pCode *pc); // Create a new pBlock
982 void pic16_printpBlock(FILE *of, pBlock *pb); // Write a pBlock to a file
983 void pic16_addpCode2pBlock(pBlock *pb, pCode *pc); // Add a pCode to a pBlock
984 void pic16_addpBlock(pBlock *pb); // Add a pBlock to a pFile
985 void pic16_copypCode(FILE *of, char dbName); // Write all pBlocks with dbName to *of
986 void pic16_movepBlock2Head(char dbName); // move pBlocks around
987 void pic16_AnalyzepCode(char dbName);
988 void pic16_OptimizeLocalRegs(void);
989 void pic16_AssignRegBanks(void);
990 void pic16_printCallTree(FILE *of);
991 void pCodePeepInit(void);
992 void pic16_pBlockConvert2ISR(pBlock *pb);
993 void pic16_pBlockConvert2Absolute(pBlock *pb);
994 void pic16_initDB(void);
995 void pic16_emitDB(char c, char ptype, void *p); // Add DB directives to a pBlock
996 void pic16_emitDS(char *s, char ptype, void *p);
997 void pic16_flushDB(char ptype, void *p); // Add pending DB data to a pBlock
999 pCode *pic16_newpCodeAsmDir(char *asdir, char *argfmt, ...);
1001 pCodeOp *pic16_newpCodeOpLabel(char *name, int key);
1002 pCodeOp *pic16_newpCodeOpImmd(char *name, int offset, int index, int code_space);
1003 pCodeOp *pic16_newpCodeOpLit(int lit);
1004 pCodeOp *pic16_newpCodeOpLit2(int lit, pCodeOp *arg2);
1005 pCodeOp *pic16_newpCodeOpBit(char *name, int bit,int inBitSpace, PIC_OPTYPE subt);
1006 pCodeOp *pic16_newpCodeOpRegFromStr(char *name);
1007 pCodeOp *pic16_newpCodeOp(char *name, PIC_OPTYPE p);
1008 pCodeOp *pic16_pCodeOpCopy(pCodeOp *pcop);
1010 pCode *pic16_newpCodeInfo(INFO_TYPE type, pCodeOp *pcop);
1011 pCodeOp *pic16_newpCodeOpOpt(OPT_TYPE type, char *key);
1012 pCodeOp *pic16_newpCodeOpLocalRegs(LR_TYPE type);
1014 pCode * pic16_findNextInstruction(pCode *pci);
1015 pCode * pic16_findNextpCode(pCode *pc, PC_TYPE pct);
1016 int pic16_isPCinFlow(pCode *pc, pCode *pcflow);
1017 struct regs * pic16_getRegFromInstruction(pCode *pc);
1018 struct regs * pic16_getRegFromInstruction2(pCode *pc);
1020 extern void pic16_pcode_test(void);
1021 extern int pic16_debug_verbose;
1022 extern int pic16_pcode_verbose;
1024 /*-----------------------------------------------------------------*
1026 *-----------------------------------------------------------------*/
1028 extern pCodeOpReg pic16_pc_status;
1029 extern pCodeOpReg pic16_pc_intcon;
1030 extern pCodeOpReg pic16_pc_pcl;
1031 extern pCodeOpReg pic16_pc_pclath;
1032 extern pCodeOpReg pic16_pc_pclatu; // patch 14
1033 extern pCodeOpReg pic16_pc_wreg;
1034 extern pCodeOpReg pic16_pc_tosl; // patch 14
1035 extern pCodeOpReg pic16_pc_tosh; // patch 14
1036 extern pCodeOpReg pic16_pc_tosu; // patch 14
1037 extern pCodeOpReg pic16_pc_tblptrl; // patch 15
1038 extern pCodeOpReg pic16_pc_tblptrh; //
1039 extern pCodeOpReg pic16_pc_tblptru; //
1040 extern pCodeOpReg pic16_pc_tablat; // patch 15
1041 extern pCodeOpReg pic16_pc_bsr;
1042 extern pCodeOpReg pic16_pc_fsr0;
1043 extern pCodeOpReg pic16_pc_fsr0l;
1044 extern pCodeOpReg pic16_pc_fsr0h;
1045 extern pCodeOpReg pic16_pc_fsr1l;
1046 extern pCodeOpReg pic16_pc_fsr1h;
1047 extern pCodeOpReg pic16_pc_fsr2l;
1048 extern pCodeOpReg pic16_pc_fsr2h;
1049 extern pCodeOpReg pic16_pc_indf0;
1050 extern pCodeOpReg pic16_pc_postinc0;
1051 extern pCodeOpReg pic16_pc_postdec0;
1052 extern pCodeOpReg pic16_pc_preinc0;
1053 extern pCodeOpReg pic16_pc_plusw0;
1054 extern pCodeOpReg pic16_pc_indf1;
1055 extern pCodeOpReg pic16_pc_postinc1;
1056 extern pCodeOpReg pic16_pc_postdec1;
1057 extern pCodeOpReg pic16_pc_preinc1;
1058 extern pCodeOpReg pic16_pc_plusw1;
1059 extern pCodeOpReg pic16_pc_indf2;
1060 extern pCodeOpReg pic16_pc_postinc2;
1061 extern pCodeOpReg pic16_pc_postdec2;
1062 extern pCodeOpReg pic16_pc_preinc2;
1063 extern pCodeOpReg pic16_pc_plusw2;
1064 extern pCodeOpReg pic16_pc_prodl;
1065 extern pCodeOpReg pic16_pc_prodh;
1067 extern pCodeOpReg pic16_pc_eecon1;
1068 extern pCodeOpReg pic16_pc_eecon2;
1069 extern pCodeOpReg pic16_pc_eedata;
1070 extern pCodeOpReg pic16_pc_eeadr;
1072 extern pCodeOpReg pic16_pc_kzero;
1073 extern pCodeOpReg pic16_pc_wsave; /* wsave and ssave are used to save W and the Status */
1074 extern pCodeOpReg pic16_pc_ssave; /* registers during an interrupt */
1076 extern pCodeOpReg pic16_pc_gpsimio;
1077 extern pCodeOpReg pic16_pc_gpsimio2;
1079 #endif // __PCODE_H__