[pforth] / csrc / pf_guts.h

/* @(#) pf_guts.h 98/01/28 1.4 */
#ifndef _pf_guts_h
#define _pf_guts_h

/***************************************************************
** Include file for PForth, a Forth based on 'C'
**
** Author: Phil Burk
** Copyright 1994 3DO, Phil Burk, Larry Polansky, David Rosenboom
**
** The pForth software code is dedicated to the public domain,
** and any third party may reproduce, distribute and modify
** the pForth software code or any derivative works thereof
** without any compensation or license.  The pForth software
** code is provided on an "as is" basis without any warranty
** of any kind, including, without limitation, the implied
** warranties of merchantability and fitness for a particular
** purpose and their equivalents under the laws of any jurisdiction.
**
***************************************************************/

/*
** PFORTH_VERSION changes when PForth is modified and released.
** See README file for version info.
*/
#define PFORTH_VERSION "27"

/*
** PFORTH_FILE_VERSION changes when incompatible changes are made
** in the ".dic" file format.
**
** FV3 - 950225 - Use ABS_TO_CODEREL for CodePtr. See file "pf_save.c".
** FV4 - 950309 - Added NameSize and CodeSize to pfSaveForth().
** FV5 - 950316 - Added Floats and reserved words.
** FV6 - 961213 - Added ID_LOCAL_PLUSSTORE, ID_COLON_P, etc.
** FV7 - 971203 - Added ID_FILL, (1LOCAL@),  etc., ran out of reserved, resorted.
** FV8 - 980818 - Added Endian flag.
** FV9 - 20100503 - Added support for 64-bit CELL.
*/
#define PF_FILE_VERSION (9)   /* Bump this whenever primitives added. */
#define PF_EARLIEST_FILE_VERSION (9)  /* earliest one still compatible */

/***************************************************************
** Sizes and other constants
***************************************************************/

#define TIB_SIZE (256)

#ifndef FALSE
    #define FALSE (0)
#endif
#ifndef TRUE
    #define TRUE (1)
#endif

#define FFALSE (0)
#define FTRUE (-1)
#define BLANK (' ')

#define FLAG_PRECEDENCE (0x80)
#define FLAG_IMMEDIATE  (0x40)
#define FLAG_SMUDGE     (0x20)
#define MASK_NAME_SIZE  (0x1F)

/* Debug TRACE flags */
#define TRACE_INNER     (0x0002)
#define TRACE_COMPILE   (0x0004)
#define TRACE_SPECIAL   (0x0008)

/* Numeric types returned by NUMBER? */
#define NUM_TYPE_BAD    (0)
#define NUM_TYPE_SINGLE (1)
#define NUM_TYPE_DOUBLE (2)
#define NUM_TYPE_FLOAT  (3)

#define CREATE_BODY_OFFSET  (3*sizeof(cell_t))

/***************************************************************
** Primitive Token IDS
** Do NOT change the order of these IDs or dictionary files will break!
***************************************************************/
enum cforth_primitive_ids
{
    ID_EXIT = 0,  /* ID_EXIT must always be zero. */
/* Do NOT change the order of these IDs or dictionary files will break! */
    ID_1MINUS,
    ID_1PLUS,
    ID_2DUP,
    ID_2LITERAL,
    ID_2LITERAL_P,
    ID_2MINUS,
    ID_2OVER,
    ID_2PLUS,
    ID_2SWAP,
    ID_2_R_FETCH,
    ID_2_R_FROM,
    ID_2_TO_R,
    ID_ACCEPT_P,
    ID_ALITERAL,
    ID_ALITERAL_P,
    ID_ALLOCATE,
    ID_AND,
    ID_ARSHIFT,
    ID_BAIL,
    ID_BODY_OFFSET,
    ID_BRANCH,
    ID_BYE,
    ID_CALL_C,
    ID_CFETCH,
    ID_CMOVE,
    ID_CMOVE_UP,
    ID_COLON,
    ID_COLON_P,
    ID_COMPARE,
    ID_COMP_EQUAL,
    ID_COMP_GREATERTHAN,
    ID_COMP_LESSTHAN,
    ID_COMP_NOT_EQUAL,
    ID_COMP_U_GREATERTHAN,
    ID_COMP_U_LESSTHAN,
    ID_COMP_ZERO_EQUAL,
    ID_COMP_ZERO_GREATERTHAN,
    ID_COMP_ZERO_LESSTHAN,
    ID_COMP_ZERO_NOT_EQUAL,
    ID_CR,
    ID_CREATE,
    ID_CREATE_P,
    ID_CSTORE,
    ID_DEFER,
    ID_DEFER_P,
    ID_DEPTH,
    ID_DIVIDE,
    ID_DOT,
    ID_DOTS,
    ID_DO_P,
    ID_DROP,
    ID_DUMP,
    ID_DUP,
    ID_D_MINUS,
    ID_D_MTIMES,
    ID_D_MUSMOD,
    ID_D_PLUS,
    ID_D_UMSMOD,
    ID_D_UMTIMES,
    ID_EMIT,
    ID_EMIT_P,
    ID_EOL,
    ID_ERRORQ_P,
    ID_EXECUTE,
    ID_FETCH,
    ID_FILE_CLOSE,
    ID_FILE_CREATE,
    ID_FILE_OPEN,
    ID_FILE_POSITION,
    ID_FILE_READ,
    ID_FILE_REPOSITION,
    ID_FILE_RO,
    ID_FILE_RW,
    ID_FILE_SIZE,
    ID_FILE_WRITE,
    ID_FILL,
    ID_FIND,
    ID_FINDNFA,
    ID_FLUSHEMIT,
    ID_FREE,
    ID_HERE,
    ID_NUMBERQ_P,
    ID_I,
    ID_INCLUDE_FILE,
    ID_J,
    ID_KEY,
    ID_LEAVE_P,
    ID_LITERAL,
    ID_LITERAL_P,
    ID_LOADSYS,
    ID_LOCAL_COMPILER,
    ID_LOCAL_ENTRY,
    ID_LOCAL_EXIT,
    ID_LOCAL_FETCH,
    ID_LOCAL_FETCH_1,
    ID_LOCAL_FETCH_2,
    ID_LOCAL_FETCH_3,
    ID_LOCAL_FETCH_4,
    ID_LOCAL_FETCH_5,
    ID_LOCAL_FETCH_6,
    ID_LOCAL_FETCH_7,
    ID_LOCAL_FETCH_8,
    ID_LOCAL_PLUSSTORE,
    ID_LOCAL_STORE,
    ID_LOCAL_STORE_1,
    ID_LOCAL_STORE_2,
    ID_LOCAL_STORE_3,
    ID_LOCAL_STORE_4,
    ID_LOCAL_STORE_5,
    ID_LOCAL_STORE_6,
    ID_LOCAL_STORE_7,
    ID_LOCAL_STORE_8,
    ID_LOOP_P,
    ID_LSHIFT,
    ID_MAX,
    ID_MIN,
    ID_MINUS,
    ID_NAME_TO_PREVIOUS,
    ID_NAME_TO_TOKEN,
    ID_NOOP,
    ID_NUMBERQ,
    ID_OR,
    ID_OVER,
    ID_PICK,
    ID_PLUS,
    ID_PLUSLOOP_P,
    ID_PLUS_STORE,
    ID_QDO_P,
    ID_QDUP,
    ID_QTERMINAL,
    ID_QUIT_P,
    ID_REFILL,
    ID_RESIZE,
    ID_SOURCE_LINE_NUMBER_FETCH, /* used to be ID_RESTORE_INPUT */
    ID_ROLL,
    ID_ROT,
    ID_RP_FETCH,
    ID_RP_STORE,
    ID_RSHIFT,
    ID_R_DROP,
    ID_R_FETCH,
    ID_R_FROM,
    ID_SAVE_FORTH_P,
    ID_SOURCE_LINE_NUMBER_STORE, /* used to be ID_SAVE_INPUT */
    ID_SCAN,
    ID_SEMICOLON,
    ID_SKIP,
    ID_SOURCE,
    ID_SOURCE_ID,
    ID_SOURCE_ID_POP,
    ID_SOURCE_ID_PUSH,
    ID_SOURCE_SET,
    ID_SP_FETCH,
    ID_SP_STORE,
    ID_STORE,
    ID_SWAP,
    ID_TEST1,
    ID_TEST2,
    ID_TEST3,
    ID_TICK,
    ID_TIMES,
    ID_TO_R,
    ID_TYPE,
    ID_TYPE_P,
    ID_VAR_BASE,
    ID_VAR_CODE_BASE,
    ID_VAR_CODE_LIMIT,
    ID_VAR_CONTEXT,
    ID_VAR_DP,
    ID_VAR_ECHO,
    ID_VAR_HEADERS_BASE,
    ID_VAR_HEADERS_LIMIT,
    ID_VAR_HEADERS_PTR,
    ID_VAR_NUM_TIB,
    ID_VAR_OUT,
    ID_VAR_RETURN_CODE,
    ID_VAR_SOURCE_ID,
    ID_VAR_STATE,
    ID_VAR_TO_IN,
    ID_VAR_TRACE_FLAGS,
    ID_VAR_TRACE_LEVEL,
    ID_VAR_TRACE_STACK,
    ID_VLIST,
    ID_WORD,
    ID_WORD_FETCH,
    ID_WORD_STORE,
    ID_XOR,
    ID_ZERO_BRANCH,
    ID_CATCH,
    ID_THROW,
    ID_INTERPRET,
    ID_FILE_WO,
    ID_FILE_BIN,
    /* Added to support 64 bit operation. */
    ID_CELL,
    ID_CELLS,
    /* DELETE-FILE */
    ID_FILE_DELETE,
    ID_FILE_FLUSH,		/* FLUSH-FILE */
/* If you add a word here, take away one reserved word below. */
#ifdef PF_SUPPORT_FP
/* Only reserve space if we are adding FP so that we can detect
** unsupported primitives when loading dictionary.
*/
    ID_RESERVED01,
    ID_RESERVED02,
    ID_RESERVED03,
    ID_RESERVED04,
    ID_RESERVED05,
    ID_RESERVED06,
    ID_RESERVED07,
    ID_RESERVED08,
    ID_RESERVED09,
    ID_RESERVED10,
    ID_RESERVED11,
    ID_RESERVED12,
    ID_FP_D_TO_F,
    ID_FP_FSTORE,
    ID_FP_FTIMES,
    ID_FP_FPLUS,
    ID_FP_FMINUS,
    ID_FP_FSLASH,
    ID_FP_F_ZERO_LESS_THAN,
    ID_FP_F_ZERO_EQUALS,
    ID_FP_F_LESS_THAN,
    ID_FP_F_TO_D,
    ID_FP_FFETCH,
    ID_FP_FDEPTH,
    ID_FP_FDROP,
    ID_FP_FDUP,
    ID_FP_FLITERAL,
    ID_FP_FLITERAL_P,
    ID_FP_FLOAT_PLUS,
    ID_FP_FLOATS,
    ID_FP_FLOOR,
    ID_FP_FMAX,
    ID_FP_FMIN,
    ID_FP_FNEGATE,
    ID_FP_FOVER,
    ID_FP_FROT,
    ID_FP_FROUND,
    ID_FP_FSWAP,
    ID_FP_FSTAR_STAR,
    ID_FP_FABS,
    ID_FP_FACOS,
    ID_FP_FACOSH,
    ID_FP_FALOG,
    ID_FP_FASIN,
    ID_FP_FASINH,
    ID_FP_FATAN,
    ID_FP_FATAN2,
    ID_FP_FATANH,
    ID_FP_FCOS,
    ID_FP_FCOSH,
    ID_FP_FLN,
    ID_FP_FLNP1,
    ID_FP_FLOG,
    ID_FP_FSIN,
    ID_FP_FSINCOS,
    ID_FP_FSINH,
    ID_FP_FSQRT,
    ID_FP_FTAN,
    ID_FP_FTANH,
    ID_FP_FPICK,
#endif
/* Add new IDs by replacing reserved IDs or extending FP routines. */
/* Do NOT change the order of these IDs or dictionary files will break! */
    NUM_PRIMITIVES     /* This must always be LAST */
};


/***************************************************************
** THROW Codes
***************************************************************/
/* ANSI standard definitions needed by pForth */
#define THROW_ABORT            (-1)
#define THROW_ABORT_QUOTE      (-2)
#define THROW_STACK_OVERFLOW   (-3)
#define THROW_STACK_UNDERFLOW  (-4)
#define THROW_UNDEFINED_WORD  (-13)
#define THROW_EXECUTING       (-14)
#define THROW_PAIRS           (-22)
#define THROW_FLOAT_STACK_UNDERFLOW  ( -45)
#define THROW_QUIT            (-56)
#define THROW_FLUSH_FILE      (-68)

/* THROW codes unique to pForth */
#define THROW_BYE            (-256) /* Exit program. */
#define THROW_SEMICOLON      (-257) /* Error detected at ; */
#define THROW_DEFERRED       (-258) /* Not a deferred word. Used in system.fth */

/***************************************************************
** Structures
***************************************************************/

typedef struct pfTaskData_s
{
    cell_t   *td_StackPtr;       /* Primary data stack */
    cell_t   *td_StackBase;
    cell_t   *td_StackLimit;
    cell_t   *td_ReturnPtr;      /* Return stack */
    cell_t   *td_ReturnBase;
    cell_t   *td_ReturnLimit;
#ifdef PF_SUPPORT_FP
    PF_FLOAT  *td_FloatStackPtr;
    PF_FLOAT  *td_FloatStackBase;
    PF_FLOAT  *td_FloatStackLimit;
#endif
    cell_t   *td_InsPtr;          /* Instruction pointer, "PC" */
    FileStream   *td_InputStream;
/* Terminal. */
    char    td_TIB[TIB_SIZE];   /* Buffer for terminal input. */
    cell_t    td_IN;              /* Index into Source */
    cell_t    td_SourceNum;       /* #TIB after REFILL */
    char   *td_SourcePtr;       /* Pointer to TIB or other source. */
    cell_t   td_LineNumber;      /* Incremented on every refill. */
    cell_t    td_OUT;             /* Current output column. */
} pfTaskData_t;

typedef struct pfNode
{
    struct pfNode *n_Next;
    struct pfNode *n_Prev;
} pfNode;

/* Structure of header entry in dictionary. These will be stored in dictionary specific endian format*/
typedef struct cfNameLinks
{
    cell_t       cfnl_PreviousName;   /* name relative address of previous */
    ExecToken  cfnl_ExecToken;      /* Execution token for word. */
/* Followed by variable length name field. */
} cfNameLinks;

#define PF_DICF_ALLOCATED_SEGMENTS  ( 0x0001)
typedef struct pfDictionary_s
{
    pfNode  dic_Node;
    ucell_t  dic_Flags;
/* Headers contain pointers to names and dictionary. */

    ucell_t dic_HeaderBaseUnaligned;

    ucell_t dic_HeaderBase;
    ucell_t dic_HeaderPtr;
    ucell_t dic_HeaderLimit;
/* Code segment contains tokenized code and data. */
    ucell_t dic_CodeBaseUnaligned;
    ucell_t dic_CodeBase;
    union
    {
        cell_t  *Cell;
        uint8_t *Byte;
    } dic_CodePtr;
    ucell_t dic_CodeLimit;
} pfDictionary_t;

/* Save state of include when nesting files. */
typedef struct IncludeFrame
{
    FileStream   *inf_FileID;
    cell_t         inf_LineNumber;
    cell_t         inf_SourceNum;
    cell_t         inf_IN;
    char          inf_SaveTIB[TIB_SIZE];
} IncludeFrame;

#define MAX_INCLUDE_DEPTH (16)

/***************************************************************
** Prototypes
***************************************************************/

#ifdef __cplusplus
extern "C" {
#endif

int pfCatch( ExecToken XT );

#ifdef __cplusplus
}
#endif

/***************************************************************
** External Globals
***************************************************************/
extern pfTaskData_t *gCurrentTask;
extern pfDictionary_t *gCurrentDictionary;
extern char          gScratch[TIB_SIZE];
extern cell_t         gNumPrimitives;

extern ExecToken     gLocalCompiler_XT;      /* CFA of (LOCAL) compiler. */
extern ExecToken     gNumberQ_XT;         /* XT of NUMBER? */
extern ExecToken     gQuitP_XT;           /* XT of (QUIT) */
extern ExecToken     gAcceptP_XT;         /* XT of ACCEPT */

#define DEPTH_AT_COLON_INVALID (-100)
extern cell_t         gDepthAtColon;

/* Global variables. */
extern cell_t        gVarContext;    /* Points to last name field. */
extern cell_t        gVarState;      /* 1 if compiling. */
extern cell_t        gVarBase;       /* Numeric Base. */
extern cell_t        gVarEcho;       /* Echo input from file. */
extern cell_t        gVarEchoAccept; /* Echo input from ACCEPT. */
extern cell_t        gVarTraceLevel;
extern cell_t        gVarTraceStack;
extern cell_t        gVarTraceFlags;
extern cell_t        gVarQuiet;      /* Suppress unnecessary messages, OK, etc. */
extern cell_t        gVarReturnCode; /* Returned to caller of Forth, eg. UNIX shell. */

extern IncludeFrame  gIncludeStack[MAX_INCLUDE_DEPTH];
extern cell_t         gIncludeIndex;
/***************************************************************
** Macros
***************************************************************/


/* Endian specific macros for creating target dictionaries for machines with

** different endian-ness.

*/

#if defined(PF_BIG_ENDIAN_DIC)

#define WRITE_FLOAT_DIC             WriteFloatBigEndian
#define WRITE_CELL_DIC(addr,data)   WriteCellBigEndian((uint8_t *)(addr),(ucell_t)(data))
#define WRITE_SHORT_DIC(addr,data)  Write16BigEndian((uint8_t *)(addr),(uint16_t)(data))
#define READ_FLOAT_DIC              ReadFloatBigEndian
#define READ_CELL_DIC(addr)         ReadCellBigEndian((const uint8_t *)(addr))
#define READ_SHORT_DIC(addr)        Read16BigEndian((const uint8_t *)(addr))

#elif defined(PF_LITTLE_ENDIAN_DIC)

#define WRITE_FLOAT_DIC             WriteFloatLittleEndian
#define WRITE_CELL_DIC(addr,data)   WriteCellLittleEndian((uint8_t *)(addr),(ucell_t)(data))
#define WRITE_SHORT_DIC(addr,data)  Write16LittleEndian((uint8_t *)(addr),(uint16_t)(data))
#define READ_FLOAT_DIC              ReadFloatLittleEndian
#define READ_CELL_DIC(addr)         ReadCellLittleEndian((const uint8_t *)(addr))
#define READ_SHORT_DIC(addr)        Read16LittleEndian((const uint8_t *)(addr))

#else

#define WRITE_FLOAT_DIC(addr,data)  { *((PF_FLOAT *)(addr)) = (PF_FLOAT)(data); }
#define WRITE_CELL_DIC(addr,data)   { *((cell_t *)(addr)) = (cell_t)(data); }
#define WRITE_SHORT_DIC(addr,data)  { *((int16_t *)(addr)) = (int16_t)(data); }
#define READ_FLOAT_DIC(addr)        ( *((PF_FLOAT *)(addr)) )
#define READ_CELL_DIC(addr)         ( *((const ucell_t *)(addr)) )
#define READ_SHORT_DIC(addr)        ( *((const uint16_t *)(addr)) )

#endif


#define HEADER_HERE (gCurrentDictionary->dic_HeaderPtr.Cell)
#define CODE_HERE (gCurrentDictionary->dic_CodePtr.Cell)
#define CODE_COMMA( N ) WRITE_CELL_DIC(CODE_HERE++,(N))
#define NAME_BASE (gCurrentDictionary->dic_HeaderBase)
#define CODE_BASE (gCurrentDictionary->dic_CodeBase)
#define NAME_SIZE (gCurrentDictionary->dic_HeaderLimit - gCurrentDictionary->dic_HeaderBase)
#define CODE_SIZE (gCurrentDictionary->dic_CodeLimit - gCurrentDictionary->dic_CodeBase)

#define IN_CODE_DIC(addr) ( ( ((uint8_t *)(addr)) >= gCurrentDictionary->dic_CodeBase)   && ( ((uint8_t *)(addr)) < gCurrentDictionary->dic_CodeLimit) )

#define IN_NAME_DIC(addr) ( ( ((uint8_t *)(addr)) >= gCurrentDictionary->dic_HeaderBase) && ( ((uint8_t *)(addr)) < gCurrentDictionary->dic_HeaderLimit) )
#define IN_DICS(addr) (IN_CODE_DIC(addr) || IN_NAME_DIC(addr))

/* Address conversion */
#define ABS_TO_NAMEREL( a ) ((cell_t)  (((ucell_t) a) - NAME_BASE ))
#define ABS_TO_CODEREL( a ) ((cell_t)  (((ucell_t) a) - CODE_BASE ))
#define NAMEREL_TO_ABS( a ) ((ucell_t) (((cell_t) a) + NAME_BASE))
#define CODEREL_TO_ABS( a ) ((ucell_t) (((cell_t) a) + CODE_BASE))

/* The check for >0 is only needed for CLONE testing. !!! */
#define IsTokenPrimitive(xt) ((xt<gNumPrimitives) && (xt>=0))

#define FREE_VAR(v) { if (v) { pfFreeMem((void *)(v)); v = 0; } }

#define DATA_STACK_DEPTH (gCurrentTask->td_StackBase - gCurrentTask->td_StackPtr)
#define DROP_DATA_STACK (gCurrentTask->td_StackPtr++)
#define POP_DATA_STACK (*gCurrentTask->td_StackPtr++)
#define PUSH_DATA_STACK(x) {*(--(gCurrentTask->td_StackPtr)) = (cell_t) x; }

/* Force Quad alignment. */
#define QUADUP(x) (((x)+3)&~3)

#define MIN(a,b)  ( ((a)<(b)) ? (a) : (b) )
#define MAX(a,b)  ( ((a)>(b)) ? (a) : (b) )


#ifndef TOUCH
    #define TOUCH(argument) ((void)argument)
#endif

/***************************************************************
** I/O related macros
***************************************************************/

#define EMIT(c)  ioEmit(c)
#define EMIT_CR  EMIT('\n');

#define MSG(cs)   pfMessage(cs)
#define ERR(x)    MSG(x)

#define DBUG(x)  /* PRT(x) */
#define DBUGX(x) /* DBUG(x) */

#define MSG_NUM_D(msg,num) { MSG(msg); ffDot((cell_t) num); EMIT_CR; }
#define MSG_NUM_H(msg,num) { MSG(msg); ffDotHex((cell_t) num); EMIT_CR; }

#define DBUG_NUM_D(msg,num) { pfDebugMessage(msg); pfDebugPrintDecimalNumber((cell_t) num); pfDebugMessage("\n"); }

#endif  /* _pf_guts_h */
Commit	Line	Data
8e9db35f PB	1	/* @(#) pf_guts.h 98/01/28 1.4 */
	2	#ifndef _pf_guts_h
	3	#define _pf_guts_h
	4
	5	/***************************************************************
	6	** Include file for PForth, a Forth based on 'C'
	7	**
	8	** Author: Phil Burk
	9	** Copyright 1994 3DO, Phil Burk, Larry Polansky, David Rosenboom
	10	**
	11	** The pForth software code is dedicated to the public domain,
	12	** and any third party may reproduce, distribute and modify
	13	** the pForth software code or any derivative works thereof
	14	** without any compensation or license. The pForth software
	15	** code is provided on an "as is" basis without any warranty
	16	** of any kind, including, without limitation, the implied
	17	** warranties of merchantability and fitness for a particular
	18	** purpose and their equivalents under the laws of any jurisdiction.
	19	**
	20	***************************************************************/
	21
	22	/*
	23	** PFORTH_VERSION changes when PForth is modified and released.
	24	** See README file for version info.
	25	*/
	26	#define PFORTH_VERSION "27"
	27
	28	/*
	29	** PFORTH_FILE_VERSION changes when incompatible changes are made
	30	** in the ".dic" file format.
	31	**
	32	** FV3 - 950225 - Use ABS_TO_CODEREL for CodePtr. See file "pf_save.c".
	33	** FV4 - 950309 - Added NameSize and CodeSize to pfSaveForth().
	34	** FV5 - 950316 - Added Floats and reserved words.
	35	** FV6 - 961213 - Added ID_LOCAL_PLUSSTORE, ID_COLON_P, etc.
	36	** FV7 - 971203 - Added ID_FILL, (1LOCAL@), etc., ran out of reserved, resorted.
	37	** FV8 - 980818 - Added Endian flag.
	38	** FV9 - 20100503 - Added support for 64-bit CELL.
	39	*/
	40	#define PF_FILE_VERSION (9) /* Bump this whenever primitives added. */
	41	#define PF_EARLIEST_FILE_VERSION (9) /* earliest one still compatible */
	42
	43	/***************************************************************
	44	** Sizes and other constants
	45	***************************************************************/
	46
	47	#define TIB_SIZE (256)
	48
	49	#ifndef FALSE
	50	#define FALSE (0)
	51	#endif
	52	#ifndef TRUE
	53	#define TRUE (1)
	54	#endif
	55
	56	#define FFALSE (0)
	57	#define FTRUE (-1)
	58	#define BLANK (' ')
	59
	60	#define FLAG_PRECEDENCE (0x80)
	61	#define FLAG_IMMEDIATE (0x40)
	62	#define FLAG_SMUDGE (0x20)
	63	#define MASK_NAME_SIZE (0x1F)
	64
65	/* Debug TRACE flags */
66	#define TRACE_INNER (0x0002)
67	#define TRACE_COMPILE (0x0004)
68	#define TRACE_SPECIAL (0x0008)
69
70	/* Numeric types returned by NUMBER? */
71	#define NUM_TYPE_BAD (0)
72	#define NUM_TYPE_SINGLE (1)
73	#define NUM_TYPE_DOUBLE (2)
74	#define NUM_TYPE_FLOAT (3)
75
76	#define CREATE_BODY_OFFSET (3*sizeof(cell_t))
77
78	/***************************************************************
79	** Primitive Token IDS
80	** Do NOT change the order of these IDs or dictionary files will break!
81	***************************************************************/
82	enum cforth_primitive_ids
83	{
84	ID_EXIT = 0, /* ID_EXIT must always be zero. */
85	/* Do NOT change the order of these IDs or dictionary files will break! */
86	ID_1MINUS,
87	ID_1PLUS,
88	ID_2DUP,
89	ID_2LITERAL,
90	ID_2LITERAL_P,
91	ID_2MINUS,
92	ID_2OVER,
93	ID_2PLUS,
94	ID_2SWAP,
95	ID_2_R_FETCH,
96	ID_2_R_FROM,
97	ID_2_TO_R,
98	ID_ACCEPT_P,
99	ID_ALITERAL,
100	ID_ALITERAL_P,
101	ID_ALLOCATE,
102	ID_AND,
103	ID_ARSHIFT,
104	ID_BAIL,
105	ID_BODY_OFFSET,
106	ID_BRANCH,
107	ID_BYE,
108	ID_CALL_C,
109	ID_CFETCH,
110	ID_CMOVE,
111	ID_CMOVE_UP,
112	ID_COLON,
113	ID_COLON_P,
114	ID_COMPARE,
115	ID_COMP_EQUAL,
116	ID_COMP_GREATERTHAN,
117	ID_COMP_LESSTHAN,
118	ID_COMP_NOT_EQUAL,
119	ID_COMP_U_GREATERTHAN,
120	ID_COMP_U_LESSTHAN,
121	ID_COMP_ZERO_EQUAL,
122	ID_COMP_ZERO_GREATERTHAN,
123	ID_COMP_ZERO_LESSTHAN,
124	ID_COMP_ZERO_NOT_EQUAL,
125	ID_CR,
126	ID_CREATE,
127	ID_CREATE_P,
128	ID_CSTORE,
129	ID_DEFER,
130	ID_DEFER_P,
131	ID_DEPTH,
132	ID_DIVIDE,
133	ID_DOT,
134	ID_DOTS,
135	ID_DO_P,
136	ID_DROP,
137	ID_DUMP,
138	ID_DUP,
139	ID_D_MINUS,
140	ID_D_MTIMES,
141	ID_D_MUSMOD,
142	ID_D_PLUS,
143	ID_D_UMSMOD,
144	ID_D_UMTIMES,
145	ID_EMIT,
146	ID_EMIT_P,
147	ID_EOL,
148	ID_ERRORQ_P,
149	ID_EXECUTE,
150	ID_FETCH,
151	ID_FILE_CLOSE,
152	ID_FILE_CREATE,
153	ID_FILE_OPEN,
154	ID_FILE_POSITION,
155	ID_FILE_READ,
156	ID_FILE_REPOSITION,
157	ID_FILE_RO,
158	ID_FILE_RW,
159	ID_FILE_SIZE,
160	ID_FILE_WRITE,
161	ID_FILL,
162	ID_FIND,
163	ID_FINDNFA,
164	ID_FLUSHEMIT,
165	ID_FREE,
166	ID_HERE,
167	ID_NUMBERQ_P,
168	ID_I,
169	ID_INCLUDE_FILE,
170	ID_J,
171	ID_KEY,
172	ID_LEAVE_P,
173	ID_LITERAL,
174	ID_LITERAL_P,
175	ID_LOADSYS,
176	ID_LOCAL_COMPILER,
177	ID_LOCAL_ENTRY,
178	ID_LOCAL_EXIT,
179	ID_LOCAL_FETCH,
180	ID_LOCAL_FETCH_1,
181	ID_LOCAL_FETCH_2,
182	ID_LOCAL_FETCH_3,
183	ID_LOCAL_FETCH_4,
184	ID_LOCAL_FETCH_5,
185	ID_LOCAL_FETCH_6,
186	ID_LOCAL_FETCH_7,
187	ID_LOCAL_FETCH_8,
188	ID_LOCAL_PLUSSTORE,
189	ID_LOCAL_STORE,
190	ID_LOCAL_STORE_1,
191	ID_LOCAL_STORE_2,
192	ID_LOCAL_STORE_3,
193	ID_LOCAL_STORE_4,
194	ID_LOCAL_STORE_5,
195	ID_LOCAL_STORE_6,
196	ID_LOCAL_STORE_7,
197	ID_LOCAL_STORE_8,
198	ID_LOOP_P,
199	ID_LSHIFT,
200	ID_MAX,
201	ID_MIN,
202	ID_MINUS,
203	ID_NAME_TO_PREVIOUS,
204	ID_NAME_TO_TOKEN,
205	ID_NOOP,
206	ID_NUMBERQ,
207	ID_OR,
208	ID_OVER,
209	ID_PICK,
210	ID_PLUS,
211	ID_PLUSLOOP_P,
212	ID_PLUS_STORE,
213	ID_QDO_P,
214	ID_QDUP,
215	ID_QTERMINAL,
216	ID_QUIT_P,
217	ID_REFILL,
218	ID_RESIZE,
08689895	219	ID_SOURCE_LINE_NUMBER_FETCH, /* used to be ID_RESTORE_INPUT */
8e9db35f PB	220	ID_ROLL,
	221	ID_ROT,
	222	ID_RP_FETCH,
	223	ID_RP_STORE,
	224	ID_RSHIFT,
	225	ID_R_DROP,
	226	ID_R_FETCH,
	227	ID_R_FROM,
	228	ID_SAVE_FORTH_P,
08689895	229	ID_SOURCE_LINE_NUMBER_STORE, /* used to be ID_SAVE_INPUT */
8e9db35f PB	230	ID_SCAN,
	231	ID_SEMICOLON,
	232	ID_SKIP,
	233	ID_SOURCE,
	234	ID_SOURCE_ID,
	235	ID_SOURCE_ID_POP,
	236	ID_SOURCE_ID_PUSH,
	237	ID_SOURCE_SET,
	238	ID_SP_FETCH,
	239	ID_SP_STORE,
	240	ID_STORE,
	241	ID_SWAP,
	242	ID_TEST1,
	243	ID_TEST2,
	244	ID_TEST3,
	245	ID_TICK,
	246	ID_TIMES,
	247	ID_TO_R,
	248	ID_TYPE,
	249	ID_TYPE_P,
	250	ID_VAR_BASE,
	251	ID_VAR_CODE_BASE,
	252	ID_VAR_CODE_LIMIT,
	253	ID_VAR_CONTEXT,
	254	ID_VAR_DP,
	255	ID_VAR_ECHO,
	256	ID_VAR_HEADERS_BASE,
	257	ID_VAR_HEADERS_LIMIT,
	258	ID_VAR_HEADERS_PTR,
	259	ID_VAR_NUM_TIB,
	260	ID_VAR_OUT,
	261	ID_VAR_RETURN_CODE,
	262	ID_VAR_SOURCE_ID,
	263	ID_VAR_STATE,
	264	ID_VAR_TO_IN,
	265	ID_VAR_TRACE_FLAGS,
	266	ID_VAR_TRACE_LEVEL,
	267	ID_VAR_TRACE_STACK,
	268	ID_VLIST,
	269	ID_WORD,
	270	ID_WORD_FETCH,
	271	ID_WORD_STORE,
	272	ID_XOR,
	273	ID_ZERO_BRANCH,
	274	ID_CATCH,
	275	ID_THROW,
	276	ID_INTERPRET,
	277	ID_FILE_WO,
	278	ID_FILE_BIN,
	279	/* Added to support 64 bit operation. */
	280	ID_CELL,
	281	ID_CELLS,
	282	/* DELETE-FILE */
	283	ID_FILE_DELETE,
8bf2fe25	284	ID_FILE_FLUSH, /* FLUSH-FILE */
8e9db35f PB	285	/* If you add a word here, take away one reserved word below. */
	286	#ifdef PF_SUPPORT_FP
	287	/* Only reserve space if we are adding FP so that we can detect
	288	** unsupported primitives when loading dictionary.
	289	*/
	290	ID_RESERVED01,
	291	ID_RESERVED02,
	292	ID_RESERVED03,
	293	ID_RESERVED04,
	294	ID_RESERVED05,
	295	ID_RESERVED06,
	296	ID_RESERVED07,
	297	ID_RESERVED08,
	298	ID_RESERVED09,
	299	ID_RESERVED10,
	300	ID_RESERVED11,
	301	ID_RESERVED12,
8e9db35f PB	302	ID_FP_D_TO_F,
	303	ID_FP_FSTORE,
	304	ID_FP_FTIMES,
	305	ID_FP_FPLUS,
	306	ID_FP_FMINUS,
	307	ID_FP_FSLASH,
	308	ID_FP_F_ZERO_LESS_THAN,
	309	ID_FP_F_ZERO_EQUALS,
	310	ID_FP_F_LESS_THAN,
	311	ID_FP_F_TO_D,
	312	ID_FP_FFETCH,
	313	ID_FP_FDEPTH,
	314	ID_FP_FDROP,
	315	ID_FP_FDUP,
	316	ID_FP_FLITERAL,
	317	ID_FP_FLITERAL_P,
	318	ID_FP_FLOAT_PLUS,
	319	ID_FP_FLOATS,
	320	ID_FP_FLOOR,
	321	ID_FP_FMAX,
	322	ID_FP_FMIN,
	323	ID_FP_FNEGATE,
	324	ID_FP_FOVER,
	325	ID_FP_FROT,
	326	ID_FP_FROUND,
	327	ID_FP_FSWAP,
	328	ID_FP_FSTAR_STAR,
	329	ID_FP_FABS,
	330	ID_FP_FACOS,
	331	ID_FP_FACOSH,
	332	ID_FP_FALOG,
	333	ID_FP_FASIN,
	334	ID_FP_FASINH,
	335	ID_FP_FATAN,
	336	ID_FP_FATAN2,
	337	ID_FP_FATANH,
	338	ID_FP_FCOS,
	339	ID_FP_FCOSH,
	340	ID_FP_FLN,
	341	ID_FP_FLNP1,
	342	ID_FP_FLOG,
	343	ID_FP_FSIN,
	344	ID_FP_FSINCOS,
	345	ID_FP_FSINH,
	346	ID_FP_FSQRT,
	347	ID_FP_FTAN,
	348	ID_FP_FTANH,
	349	ID_FP_FPICK,
	350	#endif
	351	/* Add new IDs by replacing reserved IDs or extending FP routines. */
	352	/* Do NOT change the order of these IDs or dictionary files will break! */
	353	NUM_PRIMITIVES /* This must always be LAST */
	354	};
	355
	356
	357
	358	/***************************************************************
	359	** THROW Codes
	360	***************************************************************/
	361	/* ANSI standard definitions needed by pForth */
	362	#define THROW_ABORT (-1)
	363	#define THROW_ABORT_QUOTE (-2)
	364	#define THROW_STACK_OVERFLOW (-3)
	365	#define THROW_STACK_UNDERFLOW (-4)
366	#define THROW_UNDEFINED_WORD (-13)
367	#define THROW_EXECUTING (-14)
368	#define THROW_PAIRS (-22)
369	#define THROW_FLOAT_STACK_UNDERFLOW ( -45)
370	#define THROW_QUIT (-56)
8bf2fe25	371	#define THROW_FLUSH_FILE (-68)
8e9db35f PB	372
	373	/* THROW codes unique to pForth */
	374	#define THROW_BYE (-256) /* Exit program. */
	375	#define THROW_SEMICOLON (-257) /* Error detected at ; */
	376	#define THROW_DEFERRED (-258) /* Not a deferred word. Used in system.fth */
	377
	378	/***************************************************************
	379	** Structures
	380	***************************************************************/
	381
	382	typedef struct pfTaskData_s
	383	{
	384	cell_t td_StackPtr; / Primary data stack */
	385	cell_t *td_StackBase;
	386	cell_t *td_StackLimit;
	387	cell_t td_ReturnPtr; / Return stack */
	388	cell_t *td_ReturnBase;
	389	cell_t *td_ReturnLimit;
	390	#ifdef PF_SUPPORT_FP
	391	PF_FLOAT *td_FloatStackPtr;
	392	PF_FLOAT *td_FloatStackBase;
	393	PF_FLOAT *td_FloatStackLimit;
	394	#endif
	395	cell_t td_InsPtr; / Instruction pointer, "PC" */
	396	FileStream *td_InputStream;
	397	/* Terminal. */
	398	char td_TIB[TIB_SIZE]; /* Buffer for terminal input. */
	399	cell_t td_IN; /* Index into Source */
	400	cell_t td_SourceNum; /* #TIB after REFILL */
	401	char td_SourcePtr; / Pointer to TIB or other source. */
	402	cell_t td_LineNumber; /* Incremented on every refill. */
	403	cell_t td_OUT; /* Current output column. */
	404	} pfTaskData_t;
	405
	406	typedef struct pfNode
	407	{
	408	struct pfNode *n_Next;
	409	struct pfNode *n_Prev;
	410	} pfNode;
	411
	412	/* Structure of header entry in dictionary. These will be stored in dictionary specific endian format*/
	413	typedef struct cfNameLinks
	414	{
	415	cell_t cfnl_PreviousName; /* name relative address of previous */
	416	ExecToken cfnl_ExecToken; /* Execution token for word. */
	417	/* Followed by variable length name field. */
	418	} cfNameLinks;
	419
	420	#define PF_DICF_ALLOCATED_SEGMENTS ( 0x0001)
	421	typedef struct pfDictionary_s
	422	{
	423	pfNode dic_Node;
	424	ucell_t dic_Flags;
	425	/* Headers contain pointers to names and dictionary. */
	426
	427	ucell_t dic_HeaderBaseUnaligned;
	428
	429	ucell_t dic_HeaderBase;
	430	ucell_t dic_HeaderPtr;
	431	ucell_t dic_HeaderLimit;
	432	/* Code segment contains tokenized code and data. */
	433	ucell_t dic_CodeBaseUnaligned;
	434	ucell_t dic_CodeBase;
	435	union
436	{
437	cell_t *Cell;
438	uint8_t *Byte;
439	} dic_CodePtr;
440	ucell_t dic_CodeLimit;
441	} pfDictionary_t;
442
443	/* Save state of include when nesting files. */
444	typedef struct IncludeFrame
445	{
446	FileStream *inf_FileID;
447	cell_t inf_LineNumber;
448	cell_t inf_SourceNum;
449	cell_t inf_IN;
450	char inf_SaveTIB[TIB_SIZE];
451	} IncludeFrame;
452
453	#define MAX_INCLUDE_DEPTH (16)
454
455	/***************************************************************
456	** Prototypes
457	***************************************************************/
458
459	#ifdef __cplusplus
460	extern "C" {
461	#endif
462
463	int pfCatch( ExecToken XT );
464
465	#ifdef __cplusplus
466	}
467	#endif
468
469	/***************************************************************
470	** External Globals
471	***************************************************************/
472	extern pfTaskData_t *gCurrentTask;
473	extern pfDictionary_t *gCurrentDictionary;
474	extern char gScratch[TIB_SIZE];
475	extern cell_t gNumPrimitives;
476
477	extern ExecToken gLocalCompiler_XT; /* CFA of (LOCAL) compiler. */
478	extern ExecToken gNumberQ_XT; /* XT of NUMBER? */
479	extern ExecToken gQuitP_XT; /* XT of (QUIT) */
480	extern ExecToken gAcceptP_XT; /* XT of ACCEPT */
481
482	#define DEPTH_AT_COLON_INVALID (-100)
483	extern cell_t gDepthAtColon;
484
485	/* Global variables. */
486	extern cell_t gVarContext; /* Points to last name field. */
487	extern cell_t gVarState; /* 1 if compiling. */
488	extern cell_t gVarBase; /* Numeric Base. */
489	extern cell_t gVarEcho; /* Echo input from file. */
490	extern cell_t gVarEchoAccept; /* Echo input from ACCEPT. */
491	extern cell_t gVarTraceLevel;
492	extern cell_t gVarTraceStack;
493	extern cell_t gVarTraceFlags;
494	extern cell_t gVarQuiet; /* Suppress unnecessary messages, OK, etc. */
495	extern cell_t gVarReturnCode; /* Returned to caller of Forth, eg. UNIX shell. */
496
497	extern IncludeFrame gIncludeStack[MAX_INCLUDE_DEPTH];
498	extern cell_t gIncludeIndex;
499	/***************************************************************
500	** Macros
501	***************************************************************/
502
503
504	/* Endian specific macros for creating target dictionaries for machines with
505
506	** different endian-ness.
507
508	*/
509
510	#if defined(PF_BIG_ENDIAN_DIC)
511
512	#define WRITE_FLOAT_DIC WriteFloatBigEndian
513	#define WRITE_CELL_DIC(addr,data) WriteCellBigEndian((uint8_t *)(addr),(ucell_t)(data))
514	#define WRITE_SHORT_DIC(addr,data) Write16BigEndian((uint8_t *)(addr),(uint16_t)(data))
515	#define READ_FLOAT_DIC ReadFloatBigEndian
516	#define READ_CELL_DIC(addr) ReadCellBigEndian((const uint8_t *)(addr))
517	#define READ_SHORT_DIC(addr) Read16BigEndian((const uint8_t *)(addr))
518
519	#elif defined(PF_LITTLE_ENDIAN_DIC)
520
521	#define WRITE_FLOAT_DIC WriteFloatLittleEndian
522	#define WRITE_CELL_DIC(addr,data) WriteCellLittleEndian((uint8_t *)(addr),(ucell_t)(data))
523	#define WRITE_SHORT_DIC(addr,data) Write16LittleEndian((uint8_t *)(addr),(uint16_t)(data))
524	#define READ_FLOAT_DIC ReadFloatLittleEndian
525	#define READ_CELL_DIC(addr) ReadCellLittleEndian((const uint8_t *)(addr))
526	#define READ_SHORT_DIC(addr) Read16LittleEndian((const uint8_t *)(addr))
527
528	#else
529
530	#define WRITE_FLOAT_DIC(addr,data) { ((PF_FLOAT )(addr)) = (PF_FLOAT)(data); }
531	#define WRITE_CELL_DIC(addr,data) { ((cell_t )(addr)) = (cell_t)(data); }
532	#define WRITE_SHORT_DIC(addr,data) { ((int16_t )(addr)) = (int16_t)(data); }
533	#define READ_FLOAT_DIC(addr) ( ((PF_FLOAT )(addr)) )
534	#define READ_CELL_DIC(addr) ( ((const ucell_t )(addr)) )
535	#define READ_SHORT_DIC(addr) ( ((const uint16_t )(addr)) )
536
537	#endif
538
539
540	#define HEADER_HERE (gCurrentDictionary->dic_HeaderPtr.Cell)
541	#define CODE_HERE (gCurrentDictionary->dic_CodePtr.Cell)
542	#define CODE_COMMA( N ) WRITE_CELL_DIC(CODE_HERE++,(N))
543	#define NAME_BASE (gCurrentDictionary->dic_HeaderBase)
544	#define CODE_BASE (gCurrentDictionary->dic_CodeBase)
545	#define NAME_SIZE (gCurrentDictionary->dic_HeaderLimit - gCurrentDictionary->dic_HeaderBase)
546	#define CODE_SIZE (gCurrentDictionary->dic_CodeLimit - gCurrentDictionary->dic_CodeBase)
547
548	#define IN_CODE_DIC(addr) ( ( ((uint8_t )(addr)) >= gCurrentDictionary->dic_CodeBase) && ( ((uint8_t )(addr)) < gCurrentDictionary->dic_CodeLimit) )
549
550	#define IN_NAME_DIC(addr) ( ( ((uint8_t )(addr)) >= gCurrentDictionary->dic_HeaderBase) && ( ((uint8_t )(addr)) < gCurrentDictionary->dic_HeaderLimit) )
551	#define IN_DICS(addr) (IN_CODE_DIC(addr) \|\| IN_NAME_DIC(addr))
552
553	/* Address conversion */
554	#define ABS_TO_NAMEREL( a ) ((cell_t) (((ucell_t) a) - NAME_BASE ))
555	#define ABS_TO_CODEREL( a ) ((cell_t) (((ucell_t) a) - CODE_BASE ))
556	#define NAMEREL_TO_ABS( a ) ((ucell_t) (((cell_t) a) + NAME_BASE))
557	#define CODEREL_TO_ABS( a ) ((ucell_t) (((cell_t) a) + CODE_BASE))
558
559	/* The check for >0 is only needed for CLONE testing. !!! */
560	#define IsTokenPrimitive(xt) ((xt<gNumPrimitives) && (xt>=0))
561
562	#define FREE_VAR(v) { if (v) { pfFreeMem((void *)(v)); v = 0; } }
563
564	#define DATA_STACK_DEPTH (gCurrentTask->td_StackBase - gCurrentTask->td_StackPtr)
565	#define DROP_DATA_STACK (gCurrentTask->td_StackPtr++)
566	#define POP_DATA_STACK (*gCurrentTask->td_StackPtr++)
567	#define PUSH_DATA_STACK(x) {*(--(gCurrentTask->td_StackPtr)) = (cell_t) x; }
568
569	/* Force Quad alignment. */
570	#define QUADUP(x) (((x)+3)&~3)
571
572	#define MIN(a,b) ( ((a)<(b)) ? (a) : (b) )
573	#define MAX(a,b) ( ((a)>(b)) ? (a) : (b) )
574
575
576	#ifndef TOUCH
577	#define TOUCH(argument) ((void)argument)
578	#endif
579
580	/***************************************************************
581	** I/O related macros
582	***************************************************************/
583
584	#define EMIT(c) ioEmit(c)
585	#define EMIT_CR EMIT('\n');
586
587	#define MSG(cs) pfMessage(cs)
588	#define ERR(x) MSG(x)
589
590	#define DBUG(x) /* PRT(x) */
591	#define DBUGX(x) /* DBUG(x) */
592
593	#define MSG_NUM_D(msg,num) { MSG(msg); ffDot((cell_t) num); EMIT_CR; }
594	#define MSG_NUM_H(msg,num) { MSG(msg); ffDotHex((cell_t) num); EMIT_CR; }
595
596	#define DBUG_NUM_D(msg,num) { pfDebugMessage(msg); pfDebugPrintDecimalNumber((cell_t) num); pfDebugMessage("\n"); }
597
598	#endif /* _pf_guts_h */