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 */
329 OPT_JUMPTABLE_BEGIN, /* mark beginning of a jumptable */
330 OPT_JUMPTABLE_END /* mark end of jumptable */
333 /***********************************************************************
334 * LR_TYPE - optimization node types
335 ***********************************************************************/
339 LR_ENTRY_BEGIN, /* mark beginning of optimization block */
340 LR_ENTRY_END, /* mark ending of optimization block */
346 /************************************************/
347 /*************** Structures ********************/
348 /************************************************/
349 /* These are here as forward references - the
350 * full definition of these are below */
352 struct pCodeWildBlock;
353 struct pCodeRegLives;
355 /*************************************************
358 The first step in optimizing pCode is determining
359 the program flow. This information is stored in
360 single-linked lists in the for of 'from' and 'to'
361 objects with in a pcode. For example, most instructions
362 don't involve any branching. So their from branch
363 points to the pCode immediately preceding them and
364 their 'to' branch points to the pcode immediately
365 following them. A skip instruction is an example of
366 a pcode that has multiple (in this case two) elements
367 in the 'to' branch. A 'label' pcode is an where there
368 may be multiple 'from' branches.
369 *************************************************/
371 typedef struct pBranch
373 struct pCode *pc; // Next pCode in a branch
374 struct pBranch *next; /* If more than one branch
375 * the next one is here */
379 /*************************************************
382 pCode Operand structure.
383 For those assembly instructions that have arguments,
384 the pCode will have a pCodeOp in which the argument
385 can be stored. For example
389 'some_register' will be stored/referenced in a pCodeOp
391 *************************************************/
393 typedef struct pCodeOp
401 typedef struct pCodeOpBit
405 unsigned int inBitSpace: 1; /* True if in bit space, else
406 just a bit of a register */
409 typedef struct pCodeOpLit
415 typedef struct pCodeOpLit2
423 typedef struct pCodeOpImmd
426 int offset; /* low,high or upper byte of immediate value */
427 int index; /* add this to the immediate value */
428 unsigned _const:1; /* is in code space */
430 int rIdx; /* If this immd points to a register */
431 struct regs *r; /* then this is the reg. */
435 typedef struct pCodeOpLabel
441 typedef struct pCodeOpReg
443 pCodeOp pcop; // Can be either GPR or SFR
444 int rIdx; // Index into the register table
446 int instance; // byte # of Multi-byte registers
449 pCodeOp *pcop2; // second memory operand (NEEDED IN gen.c:pic16_popGet2p (pCodeOpReg casted into pCodeOpReg2)
452 typedef struct pCodeOpReg2
454 pCodeOp pcop; // used by default to all references
457 int instance; // assume same instance for both operands
460 pCodeOp *pcop2; // second memory operand
463 typedef struct pCodeOpRegBit
465 pCodeOpReg pcor; // The Register containing this bit
466 int bit; // 0-7 bit number.
467 PIC_OPTYPE subtype; // The type of this register.
468 unsigned int inBitSpace: 1; /* True if in bit space, else
469 just a bit of a register */
473 typedef struct pCodeOpWild
477 struct pCodeWildBlock *pcwb;
479 int id; /* index into an array of char *'s that will match
480 * the wild card. The array is in *pcp. */
481 pCodeOp *subtype; /* Pointer to the Operand type into which this wild
482 * card will be expanded */
483 pCodeOp *matched; /* When a wild matches, we'll store a pointer to the
484 * opcode we matched */
486 pCodeOp *pcop2; /* second operand if exists */
491 typedef struct pCodeOpOpt
495 OPT_TYPE type; /* optimization node type */
497 char *key; /* key by which a block is identified */
500 typedef struct pCodeOpLocalReg
507 /*************************************************
510 Here is the basic build block of a PIC instruction.
511 Each pic instruction will get allocated a pCode.
512 A linked list of pCodes makes a program.
514 **************************************************/
520 struct pCode *prev; // The pCode objects are linked together
521 struct pCode *next; // in doubly linked lists.
523 int seq; // sequence number
525 struct pBlock *pb; // The pBlock that contains this pCode.
527 /* "virtual functions"
528 * The pCode structure is like a base class
529 * in C++. The subsequent structures that "inherit"
530 * the pCode structure will initialize these function
531 * pointers to something useful */
532 // void (*analyze) (struct pCode *_this);
533 void (*destruct)(struct pCode *_this);
534 void (*print) (FILE *of,struct pCode *_this);
539 /*************************************************
541 **************************************************/
543 typedef struct pCodeComment
553 /*************************************************
555 **************************************************/
557 typedef struct pCodeCSource
569 /*************************************************
571 **************************************************/
573 /*************************************************
576 The Flow object is used as marker to separate
577 the assembly code into contiguous chunks. In other
578 words, everytime an instruction cause or potentially
579 causes a branch, a Flow object will be inserted into
580 the pCode chain to mark the beginning of the next
583 **************************************************/
585 typedef struct pCodeFlow
590 pCode *end; /* Last pCode in this flow. Note that
591 the first pCode is pc.next */
593 /* set **uses; * map the pCode instruction inCond and outCond conditions
594 * in this array of set's. The reason we allocate an
595 * array of pointers instead of declaring each type of
596 * usage is because there are port dependent usage definitions */
597 //int nuses; /* number of uses sets */
599 set *from; /* flow blocks that can send control to this flow block */
600 set *to; /* flow blocks to which this one can send control */
601 struct pCodeFlow *ancestor; /* The most immediate "single" pCodeFlow object that
602 * executes prior to this one. In many cases, this
603 * will be just the previous */
605 int inCond; /* Input conditions - stuff assumed defined at entry */
606 int outCond; /* Output conditions - stuff modified by flow block */
608 int firstBank; /* The first and last bank flags are the first and last */
609 int lastBank; /* register banks used within one flow object */
614 set *registers;/* Registers used in this flow */
618 /*************************************************
621 The Flow Link object is used to record information
622 about how consecutive excutive Flow objects are related.
623 The pCodeFlow objects demarcate the pCodeInstructions
624 into contiguous chunks. The FlowLink records conflicts
625 in the discontinuities. For example, if one Flow object
626 references a register in bank 0 and the next Flow object
627 references a register in bank 1, then there is a discontinuity
628 in the banking registers.
631 typedef struct pCodeFlowLink
633 pCodeFlow *pcflow; /* pointer to linked pCodeFlow object */
635 int bank_conflict; /* records bank conflicts */
639 /*************************************************
642 Here we describe all the facets of a PIC instruction
643 (expansion for the 18cxxx is also provided).
645 **************************************************/
647 typedef struct pCodeInstruction
652 PIC_OPCODE op; // The opcode of the instruction.
654 char const * const mnemonic; // Pointer to mnemonic string
656 char isize; // pCode instruction size
658 pBranch *from; // pCodes that execute before this one
659 pBranch *to; // pCodes that execute after
660 pBranch *label; // pCode instructions that have labels
662 pCodeOp *pcop; /* Operand, if this instruction has one */
663 pCodeFlow *pcflow; /* flow block to which this instruction belongs */
664 pCodeCSource *cline; /* C Source from which this instruction was derived */
666 unsigned int num_ops; /* Number of operands (0,1,2 for mid range pics) */
667 unsigned int isModReg: 1; /* If destination is W or F, then 1==F */
668 unsigned int isBitInst: 1; /* e.g. BCF */
669 unsigned int isBranch: 1; /* True if this is a branching instruction */
670 unsigned int isSkip: 1; /* True if this is a skip instruction */
671 unsigned int isLit: 1; /* True if this instruction has an literal operand */
672 unsigned int isAccess: 1; /* True if this instruction has an access RAM operand */
673 unsigned int isFastCall: 1; /* True if this instruction has a fast call/return mode select operand */
674 unsigned int is2MemOp: 1; /* True is second operand is a memory operand VR - support for MOVFF */
675 unsigned int is2LitOp: 1; /* True if instruction takes 2 literal operands VR - support for LFSR */
677 PIC_OPCODE inverted_op; /* Opcode of instruction that's the opposite of this one */
678 unsigned int inCond; // Input conditions for this instruction
679 unsigned int outCond; // Output conditions for this instruction
681 #define PCI_MAGIC 0x6e12
682 unsigned int pci_magic; // sanity check for pci initialization
687 /*************************************************
689 **************************************************/
691 typedef struct pCodeAsmDir
693 pCodeInstruction pci;
700 /*************************************************
702 **************************************************/
704 typedef struct pCodeLabel
711 int force; /* label cannot be optimized out */
715 /*************************************************
717 **************************************************/
719 typedef struct pCodeFunction
725 char *fname; /* If NULL, then this is the end of
726 a function. Otherwise, it's the
727 start and the name is contained
730 pBranch *from; // pCodes that execute before this one
731 pBranch *to; // pCodes that execute after
732 pBranch *label; // pCode instructions that have labels
734 int ncalled; /* Number of times function is called */
736 int absblock; /* hack to emulate a block pCodes in absolute position
737 but not inside a function */
738 int stackusage; /* stack positions used in function */
743 /*************************************************
745 **************************************************/
747 typedef struct pCodeWild
750 pCodeInstruction pci;
752 int id; /* Index into the wild card array of a peepBlock
753 * - this wild card will get expanded into that pCode
754 * that is stored at this index */
756 /* Conditions on wild pcode instruction */
757 int mustBeBitSkipInst:1;
758 int mustNotBeBitSkipInst:1;
759 int invertBitSkipInst:1;
761 pCodeOp *operand; // Optional operand
762 pCodeOp *label; // Optional label
767 /*************************************************
770 Here are stored generic informaton
771 *************************************************/
772 typedef struct pCodeInfo
774 pCodeInstruction pci;
776 INFO_TYPE type; /* info node type */
778 pCodeOp *oper1; /* info node arguments */
782 /*************************************************
785 Here are PIC program snippets. There's a strong
786 correlation between the eBBlocks and pBlocks.
787 SDCC subdivides a C program into managable chunks.
788 Each chunk becomes a eBBlock and ultimately in the
791 **************************************************/
793 typedef struct pBlock
795 memmap *cmemmap; /* The snippet is from this memmap */
796 char dbName; /* if cmemmap is NULL, then dbName will identify the block */
797 pCode *pcHead; /* A pointer to the first pCode in a link list of pCodes */
798 pCode *pcTail; /* A pointer to the last pCode in a link list of pCodes */
800 struct pBlock *next; /* The pBlocks will form a doubly linked list */
803 set *function_entries; /* dll of functions in this pblock */
809 unsigned visited:1; /* set true if traversed in call tree */
811 unsigned seq; /* sequence number of this pBlock */
815 /*************************************************
818 The collection of pBlock program snippets are
819 placed into a linked list that is implemented
820 in the pFile structure.
822 The pcode optimizer will parse the pFile.
824 **************************************************/
828 pBlock *pbHead; /* A pointer to the first pBlock */
829 pBlock *pbTail; /* A pointer to the last pBlock */
831 pBranch *functions; /* A SLL of functions in this pFile */
837 /*************************************************
840 The pCodeWildBlock object keeps track of the wild
841 variables, operands, and opcodes that exist in
843 **************************************************/
844 typedef struct pCodeWildBlock {
846 struct pCodePeep *pcp; // pointer back to ... I don't like this...
848 int nvars; // Number of wildcard registers in target.
849 char **vars; // array of pointers to them
851 int nops; // Number of wildcard operands in target.
852 pCodeOp **wildpCodeOps; // array of pointers to the pCodeOp's.
854 int nwildpCodes; // Number of wildcard pCodes in target/replace
855 pCode **wildpCodes; // array of pointers to the pCode's.
859 /*************************************************
862 The pCodePeep object mimics the peep hole optimizer
863 in the main SDCC src (e.g. SDCCpeeph.c). Essentially
864 there is a target pCode chain and a replacement
865 pCode chain. The target chain is compared to the
866 pCode that is generated by gen.c. If a match is
867 found then the pCode is replaced by the replacement
869 **************************************************/
870 typedef struct pCodePeep {
871 pCodeWildBlock target; // code we'd like to optimize
872 pCodeWildBlock replace; // and this is what we'll optimize it with.
875 //pBlock replace; // and this is what we'll optimize it with.
879 /* (Note: a wildcard register is a place holder. Any register
880 * can be replaced by the wildcard when the pcode is being
881 * compared to the target. */
883 /* Post Conditions. A post condition is a condition that
884 * must be either true or false before the peep rule is
885 * accepted. For example, a certain rule may be accepted
886 * if and only if the Z-bit is not used as an input to
887 * the subsequent instructions in a pCode chain.
889 unsigned int postFalseCond;
890 unsigned int postTrueCond;
894 /*************************************************
896 pCode peep command definitions
898 Here are some special commands that control the
899 way the peep hole optimizer behaves
901 **************************************************/
903 enum peepCommandTypes{
910 /*************************************************
911 peepCommand structure stores the peep commands.
913 **************************************************/
915 typedef struct peepCommand {
920 /*************************************************
923 **************************************************/
924 #define PCODE(x) ((pCode *)(x))
925 #define PCI(x) ((pCodeInstruction *)(x))
926 #define PCL(x) ((pCodeLabel *)(x))
927 #define PCF(x) ((pCodeFunction *)(x))
928 #define PCFL(x) ((pCodeFlow *)(x))
929 #define PCFLINK(x)((pCodeFlowLink *)(x))
930 #define PCW(x) ((pCodeWild *)(x))
931 #define PCCS(x) ((pCodeCSource *)(x))
932 #define PCAD(x) ((pCodeAsmDir *)(x))
933 #define PCINF(x) ((pCodeInfo *)(x))
935 #define PCOP(x) ((pCodeOp *)(x))
936 //#define PCOB(x) ((pCodeOpBit *)(x))
937 #define PCOL(x) ((pCodeOpLit *)(x))
938 #define PCOI(x) ((pCodeOpImmd *)(x))
939 #define PCOLAB(x) ((pCodeOpLabel *)(x))
940 #define PCOR(x) ((pCodeOpReg *)(x))
941 #define PCOR2(x) ((pCodeOpReg2 *)(x))
942 #define PCORB(x) ((pCodeOpRegBit *)(x))
943 #define PCOO(x) ((pCodeOpOpt *)(x))
944 #define PCOLR(x) ((pCodeOpLocalReg *)(x))
945 #define PCOW(x) ((pCodeOpWild *)(x))
946 #define PCOW2(x) (PCOW(PCOW(x)->pcop2))
947 #define PBR(x) ((pBranch *)(x))
949 #define PCWB(x) ((pCodeWildBlock *)(x))
953 macros for checking pCode types
955 #define isPCI(x) ((PCODE(x)->type == PC_OPCODE))
956 #define isPCI_BRANCH(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isBranch)
957 #define isPCI_SKIP(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isSkip)
958 #define isPCI_LIT(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isLit)
959 #define isPCI_BITSKIP(x)((PCODE(x)->type == PC_OPCODE) && PCI(x)->isSkip && PCI(x)->isBitInst)
960 #define isPCFL(x) ((PCODE(x)->type == PC_FLOW))
961 #define isPCF(x) ((PCODE(x)->type == PC_FUNCTION))
962 #define isPCL(x) ((PCODE(x)->type == PC_LABEL))
963 #define isPCW(x) ((PCODE(x)->type == PC_WILD))
964 #define isPCCS(x) ((PCODE(x)->type == PC_CSOURCE))
965 #define isPCAD(x) ((PCODE(x)->type == PC_ASMDIR))
967 #define isCALL(x) ((isPCI(x)) && (PCI(x)->op == POC_CALL))
968 #define isSTATUS_REG(r) ((r)->pc_type == PO_STATUS)
969 #define isBSR_REG(r) ((r)->pc_type == PO_BSR)
970 #define isACCESS_BANK(r) (r->accessBank)
974 #define isPCOLAB(x) ((PCOP(x)->type) == PO_LABEL)
976 /*-----------------------------------------------------------------*
978 *-----------------------------------------------------------------*/
980 pCode *pic16_newpCode (PIC_OPCODE op, pCodeOp *pcop); // Create a new pCode given an operand
981 pCode *pic16_newpCodeCharP(char *cP); // Create a new pCode given a char *
982 pCode *pic16_newpCodeInlineP(char *cP); // Create a new pCode given a char *
983 pCode *pic16_newpCodeFunction(char *g, char *f); // Create a new function
984 pCode *pic16_newpCodeLabel(char *name,int key); // Create a new label given a key
985 pCode *pic16_newpCodeLabelFORCE(char *name, int key); // Same as newpCodeLabel but label cannot be optimized out
986 pCode *pic16_newpCodeCSource(int ln, char *f, char *l); // Create a new symbol line
987 pBlock *pic16_newpCodeChain(memmap *cm,char c, pCode *pc); // Create a new pBlock
988 void pic16_printpBlock(FILE *of, pBlock *pb); // Write a pBlock to a file
989 void pic16_addpCode2pBlock(pBlock *pb, pCode *pc); // Add a pCode to a pBlock
990 void pic16_addpBlock(pBlock *pb); // Add a pBlock to a pFile
991 void pic16_copypCode(FILE *of, char dbName); // Write all pBlocks with dbName to *of
992 void pic16_movepBlock2Head(char dbName); // move pBlocks around
993 void pic16_AnalyzepCode(char dbName);
994 void pic16_OptimizeLocalRegs(void);
995 void pic16_AssignRegBanks(void);
996 void pic16_printCallTree(FILE *of);
997 void pCodePeepInit(void);
998 void pic16_pBlockConvert2ISR(pBlock *pb);
999 void pic16_pBlockConvert2Absolute(pBlock *pb);
1000 void pic16_initDB(void);
1001 void pic16_emitDB(char c, char ptype, void *p); // Add DB directives to a pBlock
1002 void pic16_emitDS(char *s, char ptype, void *p);
1003 void pic16_flushDB(char ptype, void *p); // Add pending DB data to a pBlock
1005 pCode *pic16_newpCodeAsmDir(char *asdir, char *argfmt, ...);
1007 pCodeOp *pic16_newpCodeOpLabel(char *name, int key);
1008 pCodeOp *pic16_newpCodeOpImmd(char *name, int offset, int index, int code_space);
1009 pCodeOp *pic16_newpCodeOpLit(int lit);
1010 pCodeOp *pic16_newpCodeOpLit2(int lit, pCodeOp *arg2);
1011 pCodeOp *pic16_newpCodeOpBit(char *name, int bit,int inBitSpace, PIC_OPTYPE subt);
1012 pCodeOp *pic16_newpCodeOpRegFromStr(char *name);
1013 pCodeOp *pic16_newpCodeOp(char *name, PIC_OPTYPE p);
1014 pCodeOp *pic16_pCodeOpCopy(pCodeOp *pcop);
1016 pCode *pic16_newpCodeInfo(INFO_TYPE type, pCodeOp *pcop);
1017 pCodeOp *pic16_newpCodeOpOpt(OPT_TYPE type, char *key);
1018 pCodeOp *pic16_newpCodeOpLocalRegs(LR_TYPE type);
1020 pCode * pic16_findNextInstruction(pCode *pci);
1021 pCode * pic16_findNextpCode(pCode *pc, PC_TYPE pct);
1022 int pic16_isPCinFlow(pCode *pc, pCode *pcflow);
1023 struct regs * pic16_getRegFromInstruction(pCode *pc);
1024 struct regs * pic16_getRegFromInstruction2(pCode *pc);
1025 char *pic16_get_op(pCodeOp *pcop,char *buffer, size_t size);
1026 char *pic16_get_op2(pCodeOp *pcop,char *buffer, size_t size);
1027 char *dumpPicOptype(PIC_OPTYPE type);
1029 extern void pic16_pcode_test(void);
1030 extern int pic16_debug_verbose;
1031 extern int pic16_pcode_verbose;
1034 //#define debugf(frm, rest...) _debugf(__FILE__, __LINE__, frm, rest)
1035 #define debugf(frm, rest) _debugf(__FILE__, __LINE__, frm, rest)
1036 #define debugf2(frm, arg1, arg2) _debugf(__FILE__, __LINE__, frm, arg1, arg2)
1037 #define debugf3(frm, arg1, arg2, arg3) _debugf(__FILE__, __LINE__, frm, arg1, arg2, arg3)
1041 extern void _debugf(char *f, int l, char *frm, ...);
1044 /*-----------------------------------------------------------------*
1046 *-----------------------------------------------------------------*/
1048 extern pCodeOpReg pic16_pc_status;
1049 extern pCodeOpReg pic16_pc_intcon;
1050 extern pCodeOpReg pic16_pc_pcl;
1051 extern pCodeOpReg pic16_pc_pclath;
1052 extern pCodeOpReg pic16_pc_pclatu;
1053 extern pCodeOpReg pic16_pc_wreg;
1054 extern pCodeOpReg pic16_pc_tosl;
1055 extern pCodeOpReg pic16_pc_tosh;
1056 extern pCodeOpReg pic16_pc_tosu;
1057 extern pCodeOpReg pic16_pc_tblptrl;
1058 extern pCodeOpReg pic16_pc_tblptrh;
1059 extern pCodeOpReg pic16_pc_tblptru;
1060 extern pCodeOpReg pic16_pc_tablat;
1061 extern pCodeOpReg pic16_pc_bsr;
1062 extern pCodeOpReg pic16_pc_fsr0;
1063 extern pCodeOpReg pic16_pc_fsr0l;
1064 extern pCodeOpReg pic16_pc_fsr0h;
1065 extern pCodeOpReg pic16_pc_fsr1l;
1066 extern pCodeOpReg pic16_pc_fsr1h;
1067 extern pCodeOpReg pic16_pc_fsr2l;
1068 extern pCodeOpReg pic16_pc_fsr2h;
1069 extern pCodeOpReg pic16_pc_indf0;
1070 extern pCodeOpReg pic16_pc_postinc0;
1071 extern pCodeOpReg pic16_pc_postdec0;
1072 extern pCodeOpReg pic16_pc_preinc0;
1073 extern pCodeOpReg pic16_pc_plusw0;
1074 extern pCodeOpReg pic16_pc_indf1;
1075 extern pCodeOpReg pic16_pc_postinc1;
1076 extern pCodeOpReg pic16_pc_postdec1;
1077 extern pCodeOpReg pic16_pc_preinc1;
1078 extern pCodeOpReg pic16_pc_plusw1;
1079 extern pCodeOpReg pic16_pc_indf2;
1080 extern pCodeOpReg pic16_pc_postinc2;
1081 extern pCodeOpReg pic16_pc_postdec2;
1082 extern pCodeOpReg pic16_pc_preinc2;
1083 extern pCodeOpReg pic16_pc_plusw2;
1084 extern pCodeOpReg pic16_pc_prodl;
1085 extern pCodeOpReg pic16_pc_prodh;
1087 extern pCodeOpReg pic16_pc_eecon1;
1088 extern pCodeOpReg pic16_pc_eecon2;
1089 extern pCodeOpReg pic16_pc_eedata;
1090 extern pCodeOpReg pic16_pc_eeadr;
1092 extern pCodeOpReg pic16_pc_kzero;
1093 extern pCodeOpReg pic16_pc_wsave; /* wsave and ssave are used to save W and the Status */
1094 extern pCodeOpReg pic16_pc_ssave; /* registers during an interrupt */
1096 extern pCodeOpReg *pic16_stackpnt_lo;
1097 extern pCodeOpReg *pic16_stackpnt_hi;
1098 extern pCodeOpReg *pic16_stack_postinc;
1099 extern pCodeOpReg *pic16_stack_postdec;
1100 extern pCodeOpReg *pic16_stack_preinc;
1101 extern pCodeOpReg *pic16_stack_plusw;
1103 extern pCodeOpReg *pic16_framepnt_lo;
1104 extern pCodeOpReg *pic16_framepnt_hi;
1105 extern pCodeOpReg *pic16_frame_postinc;
1106 extern pCodeOpReg *pic16_frame_postdec;
1107 extern pCodeOpReg *pic16_frame_preinc;
1108 extern pCodeOpReg *pic16_frame_plusw;
1110 extern pCodeOpReg pic16_pc_gpsimio;
1111 extern pCodeOpReg pic16_pc_gpsimio2;
1113 #endif // __PCODE_H__