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 information 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 */
410 typedef struct pCodeOpLit
416 typedef struct pCodeOpLit2
424 typedef struct pCodeOpImmd
427 int offset; /* low,high or upper byte of immediate value */
428 int index; /* add this to the immediate value */
429 unsigned _const:1; /* is in code space */
431 int rIdx; /* If this immd points to a register */
432 struct regs *r; /* then this is the reg. */
436 typedef struct pCodeOpLabel
442 typedef struct pCodeOpReg
444 pCodeOp pcop; // Can be either GPR or SFR
445 int rIdx; // Index into the register table
447 int instance; // byte # of Multi-byte registers
450 pCodeOp *pcop2; // second memory operand (NEEDED IN gen.c:pic16_popGet2p (pCodeOpReg casted into pCodeOpReg2)
453 typedef struct pCodeOpReg2
455 pCodeOp pcop; // used by default to all references
458 int instance; // assume same instance for both operands
461 pCodeOp *pcop2; // second memory operand
464 typedef struct pCodeOpRegBit
466 pCodeOpReg pcor; // The Register containing this bit
467 int bit; // 0-7 bit number.
468 PIC_OPTYPE subtype; // The type of this register.
469 unsigned int inBitSpace: 1; /* True if in bit space, else
470 just a bit of a register */
474 typedef struct pCodeOpWild
478 struct pCodeWildBlock *pcwb;
480 int id; /* index into an array of char *'s that will match
481 * the wild card. The array is in *pcp. */
482 pCodeOp *subtype; /* Pointer to the Operand type into which this wild
483 * card will be expanded */
484 pCodeOp *matched; /* When a wild matches, we'll store a pointer to the
485 * opcode we matched */
487 pCodeOp *pcop2; /* second operand if exists */
492 typedef struct pCodeOpOpt
496 OPT_TYPE type; /* optimization node type */
498 char *key; /* key by which a block is identified */
501 typedef struct pCodeOpLocalReg
508 /*************************************************
511 Here is the basic build block of a PIC instruction.
512 Each pic instruction will get allocated a pCode.
513 A linked list of pCodes makes a program.
515 **************************************************/
521 struct pCode *prev; // The pCode objects are linked together
522 struct pCode *next; // in doubly linked lists.
524 int seq; // sequence number
526 struct pBlock *pb; // The pBlock that contains this pCode.
528 /* "virtual functions"
529 * The pCode structure is like a base class
530 * in C++. The subsequent structures that "inherit"
531 * the pCode structure will initialize these function
532 * pointers to something useful */
533 // void (*analyze) (struct pCode *_this);
534 void (*destruct)(struct pCode *_this);
535 void (*print) (FILE *of,struct pCode *_this);
540 /*************************************************
542 **************************************************/
544 typedef struct pCodeComment
554 /*************************************************
556 **************************************************/
558 typedef struct pCodeCSource
570 /*************************************************
572 **************************************************/
574 /*************************************************
577 The Flow object is used as marker to separate
578 the assembly code into contiguous chunks. In other
579 words, everytime an instruction cause or potentially
580 causes a branch, a Flow object will be inserted into
581 the pCode chain to mark the beginning of the next
584 **************************************************/
585 struct defmap_s; // defined in pcode.c
587 typedef struct pCodeFlow
592 pCode *end; /* Last pCode in this flow. Note that
593 the first pCode is pc.next */
595 /* set **uses; * map the pCode instruction inCond and outCond conditions
596 * in this array of set's. The reason we allocate an
597 * array of pointers instead of declaring each type of
598 * usage is because there are port dependent usage definitions */
599 //int nuses; /* number of uses sets */
601 set *from; /* flow blocks that can send control to this flow block */
602 set *to; /* flow blocks to which this one can send control */
603 struct pCodeFlow *ancestor; /* The most immediate "single" pCodeFlow object that
604 * executes prior to this one. In many cases, this
605 * will be just the previous */
607 int inCond; /* Input conditions - stuff assumed defined at entry */
608 int outCond; /* Output conditions - stuff modified by flow block */
610 int firstBank; /* The first and last bank flags are the first and last */
611 int lastBank; /* register banks used within one flow object */
616 set *registers;/* Registers used in this flow */
618 struct defmap_s *defmap; /* chronologically ordered list of definitions performed
619 in this flow (most recent at the front) */
620 struct defmap_s *in_vals; /* definitions of all symbols reaching this flow
621 * symbols with multiple different definitions are stored
622 * with an assigned value of 0. */
623 struct defmap_s *out_vals; /* definitions valid AFTER thie flow */
627 /*************************************************
630 The Flow Link object is used to record information
631 about how consecutive excutive Flow objects are related.
632 The pCodeFlow objects demarcate the pCodeInstructions
633 into contiguous chunks. The FlowLink records conflicts
634 in the discontinuities. For example, if one Flow object
635 references a register in bank 0 and the next Flow object
636 references a register in bank 1, then there is a discontinuity
637 in the banking registers.
640 typedef struct pCodeFlowLink
642 pCodeFlow *pcflow; /* pointer to linked pCodeFlow object */
644 int bank_conflict; /* records bank conflicts */
648 /*************************************************
651 Here we describe all the facets of a PIC instruction
652 (expansion for the 18cxxx is also provided).
654 **************************************************/
656 typedef struct pCodeInstruction
661 PIC_OPCODE op; // The opcode of the instruction.
663 char const * const mnemonic; // Pointer to mnemonic string
665 char isize; // pCode instruction size
667 pBranch *from; // pCodes that execute before this one
668 pBranch *to; // pCodes that execute after
669 pBranch *label; // pCode instructions that have labels
671 pCodeOp *pcop; /* Operand, if this instruction has one */
672 pCodeFlow *pcflow; /* flow block to which this instruction belongs */
673 pCodeCSource *cline; /* C Source from which this instruction was derived */
675 unsigned int num_ops; /* Number of operands (0,1,2 for mid range pics) */
676 unsigned int isModReg: 1; /* If destination is W or F, then 1==F */
677 unsigned int isBitInst: 1; /* e.g. BCF */
678 unsigned int isBranch: 1; /* True if this is a branching instruction */
679 unsigned int isSkip: 1; /* True if this is a skip instruction */
680 unsigned int isLit: 1; /* True if this instruction has an literal operand */
681 unsigned int isAccess: 1; /* True if this instruction has an access RAM operand */
682 unsigned int isFastCall: 1; /* True if this instruction has a fast call/return mode select operand */
683 unsigned int is2MemOp: 1; /* True is second operand is a memory operand VR - support for MOVFF */
684 unsigned int is2LitOp: 1; /* True if instruction takes 2 literal operands VR - support for LFSR */
686 PIC_OPCODE inverted_op; /* Opcode of instruction that's the opposite of this one */
687 unsigned int inCond; // Input conditions for this instruction
688 unsigned int outCond; // Output conditions for this instruction
690 #define PCI_MAGIC 0x6e12
691 unsigned int pci_magic; // sanity check for pci initialization
696 /*************************************************
698 **************************************************/
700 typedef struct pCodeAsmDir
702 pCodeInstruction pci;
709 /*************************************************
711 **************************************************/
713 typedef struct pCodeLabel
720 int force; /* label cannot be optimized out */
724 /*************************************************
726 **************************************************/
728 typedef struct pCodeFunction
734 char *fname; /* If NULL, then this is the end of
735 a function. Otherwise, it's the
736 start and the name is contained
739 pBranch *from; // pCodes that execute before this one
740 pBranch *to; // pCodes that execute after
741 pBranch *label; // pCode instructions that have labels
743 int ncalled; /* Number of times function is called */
745 int absblock; /* hack to emulate a block pCodes in absolute position
746 but not inside a function */
747 int stackusage; /* stack positions used in function */
752 /*************************************************
754 **************************************************/
756 typedef struct pCodeWild
759 pCodeInstruction pci;
761 int id; /* Index into the wild card array of a peepBlock
762 * - this wild card will get expanded into that pCode
763 * that is stored at this index */
765 /* Conditions on wild pcode instruction */
766 int mustBeBitSkipInst:1;
767 int mustNotBeBitSkipInst:1;
768 int invertBitSkipInst:1;
770 pCodeOp *operand; // Optional operand
771 pCodeOp *label; // Optional label
776 /*************************************************
779 Here are stored generic informaton
780 *************************************************/
781 typedef struct pCodeInfo
783 pCodeInstruction pci;
785 INFO_TYPE type; /* info node type */
787 pCodeOp *oper1; /* info node arguments */
791 /*************************************************
794 Here are PIC program snippets. There's a strong
795 correlation between the eBBlocks and pBlocks.
796 SDCC subdivides a C program into managable chunks.
797 Each chunk becomes a eBBlock and ultimately in the
800 **************************************************/
802 typedef struct pBlock
804 memmap *cmemmap; /* The snippet is from this memmap */
805 char dbName; /* if cmemmap is NULL, then dbName will identify the block */
806 pCode *pcHead; /* A pointer to the first pCode in a link list of pCodes */
807 pCode *pcTail; /* A pointer to the last pCode in a link list of pCodes */
809 struct pBlock *next; /* The pBlocks will form a doubly linked list */
812 set *function_entries; /* dll of functions in this pblock */
818 unsigned visited:1; /* set true if traversed in call tree */
820 unsigned seq; /* sequence number of this pBlock */
824 /*************************************************
827 The collection of pBlock program snippets are
828 placed into a linked list that is implemented
829 in the pFile structure.
831 The pcode optimizer will parse the pFile.
833 **************************************************/
837 pBlock *pbHead; /* A pointer to the first pBlock */
838 pBlock *pbTail; /* A pointer to the last pBlock */
840 pBranch *functions; /* A SLL of functions in this pFile */
846 /*************************************************
849 The pCodeWildBlock object keeps track of the wild
850 variables, operands, and opcodes that exist in
852 **************************************************/
853 typedef struct pCodeWildBlock {
855 struct pCodePeep *pcp; // pointer back to ... I don't like this...
857 int nvars; // Number of wildcard registers in target.
858 char **vars; // array of pointers to them
860 int nops; // Number of wildcard operands in target.
861 pCodeOp **wildpCodeOps; // array of pointers to the pCodeOp's.
863 int nwildpCodes; // Number of wildcard pCodes in target/replace
864 pCode **wildpCodes; // array of pointers to the pCode's.
868 /*************************************************
871 The pCodePeep object mimics the peep hole optimizer
872 in the main SDCC src (e.g. SDCCpeeph.c). Essentially
873 there is a target pCode chain and a replacement
874 pCode chain. The target chain is compared to the
875 pCode that is generated by gen.c. If a match is
876 found then the pCode is replaced by the replacement
878 **************************************************/
879 typedef struct pCodePeep {
880 pCodeWildBlock target; // code we'd like to optimize
881 pCodeWildBlock replace; // and this is what we'll optimize it with.
884 //pBlock replace; // and this is what we'll optimize it with.
888 /* (Note: a wildcard register is a place holder. Any register
889 * can be replaced by the wildcard when the pcode is being
890 * compared to the target. */
892 /* Post Conditions. A post condition is a condition that
893 * must be either true or false before the peep rule is
894 * accepted. For example, a certain rule may be accepted
895 * if and only if the Z-bit is not used as an input to
896 * the subsequent instructions in a pCode chain.
898 unsigned int postFalseCond;
899 unsigned int postTrueCond;
903 /*************************************************
905 pCode peep command definitions
907 Here are some special commands that control the
908 way the peep hole optimizer behaves
910 **************************************************/
912 enum peepCommandTypes{
919 /*************************************************
920 peepCommand structure stores the peep commands.
922 **************************************************/
924 typedef struct peepCommand {
929 /*************************************************
932 **************************************************/
933 #define PCODE(x) ((pCode *)(x))
934 #define PCI(x) ((pCodeInstruction *)(x))
935 #define PCL(x) ((pCodeLabel *)(x))
936 #define PCF(x) ((pCodeFunction *)(x))
937 #define PCFL(x) ((pCodeFlow *)(x))
938 #define PCFLINK(x)((pCodeFlowLink *)(x))
939 #define PCW(x) ((pCodeWild *)(x))
940 #define PCCS(x) ((pCodeCSource *)(x))
941 #define PCAD(x) ((pCodeAsmDir *)(x))
942 #define PCINF(x) ((pCodeInfo *)(x))
944 #define PCOP(x) ((pCodeOp *)(x))
945 //#define PCOB(x) ((pCodeOpBit *)(x))
946 #define PCOL(x) ((pCodeOpLit *)(x))
947 #define PCOI(x) ((pCodeOpImmd *)(x))
948 #define PCOLAB(x) ((pCodeOpLabel *)(x))
949 #define PCOR(x) ((pCodeOpReg *)(x))
950 #define PCOR2(x) ((pCodeOpReg2 *)(x))
951 #define PCORB(x) ((pCodeOpRegBit *)(x))
952 #define PCOO(x) ((pCodeOpOpt *)(x))
953 #define PCOLR(x) ((pCodeOpLocalReg *)(x))
954 #define PCOW(x) ((pCodeOpWild *)(x))
955 #define PCOW2(x) (PCOW(PCOW(x)->pcop2))
956 #define PBR(x) ((pBranch *)(x))
958 #define PCWB(x) ((pCodeWildBlock *)(x))
962 macros for checking pCode types
964 #define isPCI(x) ((PCODE(x)->type == PC_OPCODE))
965 #define isPCI_BRANCH(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isBranch)
966 #define isPCI_SKIP(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isSkip)
967 #define isPCI_LIT(x) ((PCODE(x)->type == PC_OPCODE) && PCI(x)->isLit)
968 #define isPCI_BITSKIP(x)((PCODE(x)->type == PC_OPCODE) && PCI(x)->isSkip && PCI(x)->isBitInst)
969 #define isPCFL(x) ((PCODE(x)->type == PC_FLOW))
970 #define isPCF(x) ((PCODE(x)->type == PC_FUNCTION))
971 #define isPCL(x) ((PCODE(x)->type == PC_LABEL))
972 #define isPCW(x) ((PCODE(x)->type == PC_WILD))
973 #define isPCCS(x) ((PCODE(x)->type == PC_CSOURCE))
974 #define isPCAD(x) ((PCODE(x)->type == PC_ASMDIR))
975 #define isPCINFO(x) ((PCODE(x)->type == PC_INFO))
977 #define isCALL(x) ((isPCI(x)) && (PCI(x)->op == POC_CALL))
978 #define isSTATUS_REG(r) ((r)->pc_type == PO_STATUS)
979 #define isBSR_REG(r) ((r)->pc_type == PO_BSR)
980 #define isACCESS_BANK(r) (r->accessBank)
984 #define isPCOLAB(x) ((PCOP(x)->type) == PO_LABEL)
986 /*-----------------------------------------------------------------*
988 *-----------------------------------------------------------------*/
990 pCode *pic16_newpCode (PIC_OPCODE op, pCodeOp *pcop); // Create a new pCode given an operand
991 pCode *pic16_newpCodeCharP(char *cP); // Create a new pCode given a char *
992 pCode *pic16_newpCodeInlineP(char *cP); // Create a new pCode given a char *
993 pCode *pic16_newpCodeFunction(char *g, char *f); // Create a new function
994 pCode *pic16_newpCodeLabel(char *name,int key); // Create a new label given a key
995 pCode *pic16_newpCodeLabelFORCE(char *name, int key); // Same as newpCodeLabel but label cannot be optimized out
996 pCode *pic16_newpCodeCSource(int ln, char *f, char *l); // Create a new symbol line
997 pBlock *pic16_newpCodeChain(memmap *cm,char c, pCode *pc); // Create a new pBlock
998 void pic16_printpBlock(FILE *of, pBlock *pb); // Write a pBlock to a file
999 void pic16_addpCode2pBlock(pBlock *pb, pCode *pc); // Add a pCode to a pBlock
1000 void pic16_addpBlock(pBlock *pb); // Add a pBlock to a pFile
1001 void pic16_copypCode(FILE *of, char dbName); // Write all pBlocks with dbName to *of
1002 void pic16_movepBlock2Head(char dbName); // move pBlocks around
1003 void pic16_AnalyzepCode(char dbName);
1004 void pic16_OptimizeLocalRegs(void);
1005 void pic16_AssignRegBanks(void);
1006 void pic16_printCallTree(FILE *of);
1007 void pCodePeepInit(void);
1008 void pic16_pBlockConvert2ISR(pBlock *pb);
1009 void pic16_pBlockConvert2Absolute(pBlock *pb);
1010 void pic16_initDB(void);
1011 void pic16_emitDB(char c, char ptype, void *p); // Add DB directives to a pBlock
1012 void pic16_emitDS(char *s, char ptype, void *p);
1013 void pic16_flushDB(char ptype, void *p); // Add pending DB data to a pBlock
1015 pCode *pic16_newpCodeAsmDir(char *asdir, char *argfmt, ...);
1017 pCodeOp *pic16_newpCodeOpLabel(char *name, int key);
1018 pCodeOp *pic16_newpCodeOpImmd(char *name, int offset, int index, int code_space);
1019 pCodeOp *pic16_newpCodeOpLit(int lit);
1020 pCodeOp *pic16_newpCodeOpLit2(int lit, pCodeOp *arg2);
1021 pCodeOp *pic16_newpCodeOpBit(char *name, int bit,int inBitSpace, PIC_OPTYPE subt);
1022 pCodeOp *pic16_newpCodeOpBit_simple (struct asmop *op, int offs, int bit);
1023 pCodeOp *pic16_newpCodeOpRegFromStr(char *name);
1024 pCodeOp *pic16_newpCodeOpReg(int rIdx);
1025 pCodeOp *pic16_newpCodeOp(char *name, PIC_OPTYPE p);
1026 pCodeOp *pic16_newpCodeOpRegNotVect(bitVect *bv);
1027 pCodeOp *pic16_pCodeOpCopy(pCodeOp *pcop);
1029 pCode *pic16_newpCodeInfo(INFO_TYPE type, pCodeOp *pcop);
1030 pCodeOp *pic16_newpCodeOpOpt(OPT_TYPE type, char *key);
1031 pCodeOp *pic16_newpCodeOpLocalRegs(LR_TYPE type);
1032 pCodeOp *pic16_newpCodeOpReg(int rIdx);
1034 pCode * pic16_findNextInstruction(pCode *pci);
1035 pCode * pic16_findNextpCode(pCode *pc, PC_TYPE pct);
1036 int pic16_isPCinFlow(pCode *pc, pCode *pcflow);
1037 struct regs * pic16_getRegFromInstruction(pCode *pc);
1038 struct regs * pic16_getRegFromInstruction2(pCode *pc);
1039 char *pic16_get_op(pCodeOp *pcop,char *buffer, size_t size);
1040 char *pic16_get_op2(pCodeOp *pcop,char *buffer, size_t size);
1041 char *dumpPicOptype(PIC_OPTYPE type);
1043 extern void pic16_pcode_test(void);
1044 extern int pic16_debug_verbose;
1045 extern int pic16_pcode_verbose;
1047 extern char *LR_TYPE_STR[];
1051 //#define debugf(frm, rest...) _debugf(__FILE__, __LINE__, frm, rest)
1052 #define debugf(frm, rest) _debugf(__FILE__, __LINE__, frm, rest)
1053 #define debugf2(frm, arg1, arg2) _debugf(__FILE__, __LINE__, frm, arg1, arg2)
1054 #define debugf3(frm, arg1, arg2, arg3) _debugf(__FILE__, __LINE__, frm, arg1, arg2, arg3)
1058 extern void _debugf(char *f, int l, char *frm, ...);
1061 /*-----------------------------------------------------------------*
1063 *-----------------------------------------------------------------*/
1065 extern pCodeOpReg pic16_pc_status;
1066 extern pCodeOpReg pic16_pc_intcon;
1067 extern pCodeOpReg pic16_pc_pcl;
1068 extern pCodeOpReg pic16_pc_pclath;
1069 extern pCodeOpReg pic16_pc_pclatu;
1070 extern pCodeOpReg pic16_pc_wreg;
1071 extern pCodeOpReg pic16_pc_tosl;
1072 extern pCodeOpReg pic16_pc_tosh;
1073 extern pCodeOpReg pic16_pc_tosu;
1074 extern pCodeOpReg pic16_pc_tblptrl;
1075 extern pCodeOpReg pic16_pc_tblptrh;
1076 extern pCodeOpReg pic16_pc_tblptru;
1077 extern pCodeOpReg pic16_pc_tablat;
1078 extern pCodeOpReg pic16_pc_bsr;
1079 extern pCodeOpReg pic16_pc_fsr0;
1080 extern pCodeOpReg pic16_pc_fsr0l;
1081 extern pCodeOpReg pic16_pc_fsr0h;
1082 extern pCodeOpReg pic16_pc_fsr1l;
1083 extern pCodeOpReg pic16_pc_fsr1h;
1084 extern pCodeOpReg pic16_pc_fsr2l;
1085 extern pCodeOpReg pic16_pc_fsr2h;
1086 extern pCodeOpReg pic16_pc_indf0;
1087 extern pCodeOpReg pic16_pc_postinc0;
1088 extern pCodeOpReg pic16_pc_postdec0;
1089 extern pCodeOpReg pic16_pc_preinc0;
1090 extern pCodeOpReg pic16_pc_plusw0;
1091 extern pCodeOpReg pic16_pc_indf1;
1092 extern pCodeOpReg pic16_pc_postinc1;
1093 extern pCodeOpReg pic16_pc_postdec1;
1094 extern pCodeOpReg pic16_pc_preinc1;
1095 extern pCodeOpReg pic16_pc_plusw1;
1096 extern pCodeOpReg pic16_pc_indf2;
1097 extern pCodeOpReg pic16_pc_postinc2;
1098 extern pCodeOpReg pic16_pc_postdec2;
1099 extern pCodeOpReg pic16_pc_preinc2;
1100 extern pCodeOpReg pic16_pc_plusw2;
1101 extern pCodeOpReg pic16_pc_prodl;
1102 extern pCodeOpReg pic16_pc_prodh;
1104 extern pCodeOpReg pic16_pc_eecon1;
1105 extern pCodeOpReg pic16_pc_eecon2;
1106 extern pCodeOpReg pic16_pc_eedata;
1107 extern pCodeOpReg pic16_pc_eeadr;
1109 extern pCodeOpReg pic16_pc_kzero;
1110 extern pCodeOpReg pic16_pc_wsave; /* wsave and ssave are used to save W and the Status */
1111 extern pCodeOpReg pic16_pc_ssave; /* registers during an interrupt */
1113 extern pCodeOpReg *pic16_stackpnt_lo;
1114 extern pCodeOpReg *pic16_stackpnt_hi;
1115 extern pCodeOpReg *pic16_stack_postinc;
1116 extern pCodeOpReg *pic16_stack_postdec;
1117 extern pCodeOpReg *pic16_stack_preinc;
1118 extern pCodeOpReg *pic16_stack_plusw;
1120 extern pCodeOpReg *pic16_framepnt_lo;
1121 extern pCodeOpReg *pic16_framepnt_hi;
1122 extern pCodeOpReg *pic16_frame_postinc;
1123 extern pCodeOpReg *pic16_frame_postdec;
1124 extern pCodeOpReg *pic16_frame_preinc;
1125 extern pCodeOpReg *pic16_frame_plusw;
1127 extern pCodeOpReg pic16_pc_gpsimio;
1128 extern pCodeOpReg pic16_pc_gpsimio2;
1130 #endif // __PCODE_H__