309 lines
12 KiB
C
309 lines
12 KiB
C
/* =====> SCHMDEFS.H */
|
||
/* TIPC Scheme Data Declarations for Lattice C */
|
||
/* Last Modification: */
|
||
/* tc 2/10/87 modified Page 5 special symbols to reflect */
|
||
/* changes for the R^3 Report. */
|
||
/* */
|
||
|
||
|
||
extern char *rtn_name;
|
||
#define ASSERT(arg) if(!(arg))asrt$(rtn_name,"arg")
|
||
#define ENTER(xyz) static char *rtn_name = "xyz"
|
||
|
||
/* Data conversion macros */
|
||
/* Adjust page number- this macro converts a logical page number to
|
||
the representation which is stored in the interpreter's registers
|
||
and pointers. "CORRPAGE" performs the reverse transformation */
|
||
#define ADJPAGE(x) ((x)<<1)
|
||
/* Correct page number- this macro converts the interpreter's encoding
|
||
of a page number into the logical page number. "ADJPAGE" performs
|
||
the reverse transformation. */
|
||
#define CORRPAGE(x) ((x)>>1)
|
||
|
||
/* Fetch value for Fixnum (immediate) from pointer */
|
||
#define get_fix(pg,ds) (((ds)<<1)>>1)
|
||
/* Fetch value for Character (immediate) from pointer */
|
||
#define get_char(pg,ds) ((ds) & 0x00ff)
|
||
|
||
/* define truth */
|
||
#define TRUE 1
|
||
#define FALSE 0
|
||
#define NULL 0 /* null pointer */
|
||
|
||
/* Position of page/displacement values in "registers" */
|
||
#define C_DISP 0
|
||
#define C_PAGE 1
|
||
|
||
/* Page Management Table Definitions */
|
||
#define NUMPAGES 128 /* maximum number of pages */
|
||
#define DEDPAGES 8 /* Number of dedicated pages */
|
||
|
||
/* MIN_PAGESIZE is defined in either regmem.h, expmem.h, or extmem.h */
|
||
#define PTRMASK MIN_PAGESIZE-1 /* mask to isolate a pointer displacement */
|
||
|
||
#define PAGEINCR 2 /* increment to get to next page */
|
||
#define PAGEMASK 0x00FE /* mask to isolate a page number */
|
||
#define WORDSIZE 16 /* computer's word size (bits/word) */
|
||
#define WORDINCR 2 /* number of address units/word */
|
||
#define HT_SIZE 211 /* the oblist's hash table size */
|
||
#define STKSIZE 900 /* the stack's length (bytes) */
|
||
#define BLK_OVHD 3 /* number of overhead bytes in a block header */
|
||
#define NUM_REGS 64 /* number of registers in the Scheme VM */
|
||
|
||
/* Data Type Equates */
|
||
#define NUMTYPES 15 /* the number of data types */
|
||
#define LISTTYPE 0
|
||
#define FIXTYPE 1
|
||
#define FLOTYPE 2
|
||
#define BIGTYPE 3
|
||
#define SYMTYPE 4
|
||
#define STRTYPE 5
|
||
#define ARYTYPE 6
|
||
#define VECTTYPE ARYTYPE
|
||
#define CONTTYPE 7
|
||
#define CLOSTYPE 8
|
||
#define FREETYPE 9
|
||
#define CODETYPE 10
|
||
#define REFTYPE 11
|
||
#define PORTTYPE 12
|
||
#define CHARTYPE 13
|
||
#define ENVTYPE 14
|
||
|
||
#define EOFERR 1 /* Codes for function ERRMSG */
|
||
#define DOTERR 2
|
||
#define QUOTERR 3
|
||
#define RPARERR 4
|
||
#define OVERERR 5
|
||
#define DIV0ERR 6
|
||
#define SHARPERR 7
|
||
#define FULLERR -1
|
||
#define PORTERR -2
|
||
#define HEAPERR -3
|
||
|
||
#define BUFSIZE 80
|
||
#define SYM_OVHD 7
|
||
|
||
#define PTRSIZE 3
|
||
#define LISTSIZE 6
|
||
#define FIXSIZE 2
|
||
#define FLOSIZE 9
|
||
#define SMALL_SIZE 1024 /* a "small" length for a block */
|
||
|
||
#define SPECCHAR 1 /* special page of characters */
|
||
#define SPECFIX 3 /* special page of fixnums */
|
||
#define SFIXLEN 0 /* length (bytes) of special fixnum page */
|
||
#define SPECFLO 4 /* special page of flonums */
|
||
#define SFLOLEN 24 /* length (bytes) of special flonum page */
|
||
#define SPECSYM 5 /* special page of symbols */
|
||
#define SSYMLEN 0x51 /* length (bytes) of special symbol page */
|
||
#define SPECSTK 6
|
||
#define SPECPOR 6 /* special page of ports */
|
||
#define SPORLEN 92 /* length (bytes) of special port page */
|
||
#define SPECCODE 7 /* code page for the bootstrap loader */
|
||
|
||
#define END_LIST 0x7FFF /* end of linked list marker */
|
||
|
||
#define NIL_PAGE 0 /* Location of "nil" */
|
||
#define NIL_DISP 0
|
||
#define T_PAGE SPECSYM /* Location of "t" (for true) */
|
||
#define T_DISP 0x0000
|
||
#define UN_PAGE SPECSYM /* Location of "#!unassigned" */
|
||
#define UN_DISP 0x0009
|
||
#define NTN_PAGE SPECSYM /* Location of "#!not-a-number" */
|
||
#define NTN_DISP 0x001C
|
||
#define OVR_PAGE SPECSYM /* Location of overflow designator */
|
||
#define OVR_DISP 0x001C /* (same as "not a number" for now) */
|
||
#define DIV0_PAGE SPECSYM /* Location of divide-by-zero designator */
|
||
#define DIV0_DISP 0x001C /* (same as "not a number" for now) */
|
||
#define IN_PAGE SPECPOR /* Location of standard input port */
|
||
#define IN_DISP 0
|
||
#define OUT_PAGE SPECPOR /* Location of standard output port */
|
||
/* #define OUT_DISP 0x011f */
|
||
#define OUT_DISP 0 /* input=output for standard console device */
|
||
#define WHO_PAGE SPECPOR /* Location of "who-line" port */
|
||
#define WHO_DISP 0x0123
|
||
#define EOF_PAGE SPECSYM /* Location of non-interned "**eof**" symbol */
|
||
#define EOF_DISP 0x0031
|
||
#define NPR_PAGE SPECSYM /* Location of "#!unprintable" */
|
||
#define NPR_DISP 0x003D
|
||
|
||
#define ADD_OP 0 /* addition */
|
||
#define SUB_OP 1 /* subtraction */
|
||
#define MUL_OP 2 /* multiplication */
|
||
#define DIV_OP 3 /* divide */
|
||
#define MOD_OP 4 /* modulo */
|
||
#define AND_OP 5 /* bitwise and */
|
||
#define OR_OP 6 /* bitwise or */
|
||
#define MINUS_OP 7 /* minus */
|
||
#define EQ_OP 8 /* equal comparison */
|
||
#define NE_OP 9 /* not equal comparison */
|
||
#define LT_OP 10 /* less than comparison */
|
||
#define GT_OP 11 /* greater than comparison */
|
||
#define LE_OP 12 /* less than or equal comparison */
|
||
#define GE_OP 13 /* greater than or equal comparison */
|
||
#define ABS_OP 14 /* absolute value */
|
||
#define QUOT_OP 15 /* quotient */
|
||
#define TRUNC_OP 16 /* truncate */
|
||
#define FLOOR_OP 17 /* floor */
|
||
#define CEIL_OP 18 /* ceiling */
|
||
#define ROUND_OP 19 /* round */
|
||
#define FLOAT_OP 20 /* float */
|
||
#define ZERO_OP 21 /* zero? */
|
||
#define POS_OP 22 /* positive? */
|
||
#define NEG_OP 23 /* negative? */
|
||
#define XOR_OP 24 /* bitwise xor */
|
||
|
||
/* Numeric Error Codes */
|
||
#define REF_GLOBAL_ERROR 1 /* reference of unbound global variable */
|
||
#define SET_GLOBAL_ERROR 2 /* SET! error-- global not defined */
|
||
#define REF_LEXICAL_ERROR 3 /* reference of unbound lexical variable */
|
||
#define SET_LEXICAL_ERROR 4 /* SET! error-- lexical variable not defined */
|
||
#define REF_FLUID_ERROR 5 /* reference of unbound fluid variable */
|
||
#define SET_FLUID_ERROR 6 /* SET-FLUID! error-- fluid not bound */
|
||
#define VECTOR_OFFSET_ERROR 7 /* vector index out of range */
|
||
#define STRING_OFFSET_ERROR 8 /* string index out of range */
|
||
#define SUBSTRING_RANGE_ERROR 9 /* invalid substring range */
|
||
#define INVALID_OPERAND_ERROR 10 /* invalid operand to VM instruction */
|
||
#define SHIFT_BREAK_CONDITION 11 /* SHFT-BRK key was depressed by user */
|
||
#define NON_PROCEDURE_ERROR 12 /* attempted to call non-procedural object */
|
||
#define TIMEOUT_CONDITION 13 /* timer interrupt */
|
||
#define WINDOW_FAULT_CONDITION 14 /* attempt to do I/O to a de-exposed window */
|
||
#define FLONUM_OVERFLOW_ERROR 15 /* flonum overflow/underflow */
|
||
#define ZERO_DIVIDE_ERROR 16 /* division by zero */
|
||
#define NUMERIC_OPERAND_ERROR 17 /* non-numeric operand */
|
||
#define APPLY_ARG_LIMIT_ERROR 18 /* too many arguments for APPLY to handle */
|
||
#define VECTOR_SIZE_LIMIT_ERROR 19 /* vector too big */
|
||
#define STRING_SIZE_LIMIT_ERROR 20 /* string too big */
|
||
#define IO_ERRORS_START 21 /* Errors from 21 and 84 are DOS I/O errors */
|
||
#define DOS_FATAL_ERROR 21 /* Generic fatal I/O error */
|
||
#define EXTEND_START_ERROR_CODE 1 /* Extended error codes from INT 59h */
|
||
#define EXTEND_END_ERROR_CODE 88
|
||
#define DISK_FULL_ERROR 200 /* Our own home-grown error codes */
|
||
#define LAST_ERROR 200 /* Future errors should start here */
|
||
|
||
|
||
/* Scheme VM Control Flags */
|
||
extern int PC_MAKE; /* variable denoting PC's manufacturer & type */
|
||
extern int VM_debug; /* VM debug mode flag */
|
||
extern int s_break; /* shift-break indicator */
|
||
|
||
extern int QUOTE_PAGE; /* Location of "quote" */
|
||
extern int QUOTE_DISP;
|
||
|
||
extern unsigned PAGESIZE;
|
||
extern unsigned pagetabl[NUMPAGES]; /* Paragraph Address (bases) */
|
||
extern struct {
|
||
unsigned atom:1;
|
||
unsigned listcell:1;
|
||
unsigned fixnums:1;
|
||
unsigned flonums:1;
|
||
unsigned bignums:1;
|
||
unsigned symbols:1;
|
||
unsigned strings:1;
|
||
unsigned arrays:1;
|
||
unsigned nomemory:1;
|
||
unsigned readonly:1;
|
||
unsigned continu:1;
|
||
unsigned closure:1;
|
||
unsigned refs:1;
|
||
unsigned ports:1;
|
||
unsigned code:1;
|
||
unsigned characters:1;
|
||
} attrib[NUMPAGES]; /* Page Attribute Bits */
|
||
extern int w_attrib[NUMPAGES]; /* Re-define attribute bits as integer */
|
||
extern int nextcell[NUMPAGES]; /* Next Available Cell Pointers */
|
||
extern int pagelink[NUMPAGES]; /* Next Page of Same Type */
|
||
extern int ptype[NUMPAGES]; /* Page Type Index */
|
||
extern unsigned psize[NUMPAGES]; /* Page Size Table */
|
||
|
||
extern int pageattr[NUMTYPES]; /* Page attribute initialization table */
|
||
extern int pagelist[NUMTYPES]; /* Page allocation table (by types) */
|
||
|
||
extern int listpage; /* Page for List Cell allocation */
|
||
extern int fixpage; /* Page for Fixnum allocation */
|
||
extern int flopage; /* Page for Flonum allocation */
|
||
extern int bigpage; /* Page for Bignum allocation */
|
||
extern int sympage; /* Page for Symbol allocation */
|
||
extern int strpage; /* Page for String allocation */
|
||
extern int arypage; /* Page for Array allocation */
|
||
extern int contpage; /* Page for Continuation allocation */
|
||
extern int clospage; /* Page for Closure allocation */
|
||
extern int freepage; /* Free page allocation list header */
|
||
extern int codepage; /* Page for Code Block allocation */
|
||
extern int refpage; /* Ref cell page allocation list header */
|
||
|
||
extern int nextpage; /* Next Page # for Allocation in Address Space */
|
||
extern int lastpage; /* Last Page # for Allocation in Address Space */
|
||
extern unsigned nextpara; /* Next Paragraph Address for Allocation */
|
||
|
||
/* Scheme's Virtual Registers */
|
||
extern long reg0, regs[NUM_REGS];
|
||
extern int nil_reg[2];
|
||
extern int reg0_page, reg0_disp, tmp_reg[2], tmp_page, tmp_disp;
|
||
extern int tm2_reg[2], tm2_page, tm2_disp;
|
||
extern int FNV_reg[2], GNV_reg[2], CB_reg[2], PREV_reg[2];
|
||
extern int FNV_pag, FNV_dis, GNV_pag, GNV_dis, CB_pag, CB_dis;
|
||
extern int PREV_pag, PREV_dis, FP, BASE;
|
||
extern int CONSOLE_[2], CON_PAGE, CON_DISP;
|
||
extern int TRNS_reg[2], TRNS_pag, TRNS_dis; /* transcript file pointer */
|
||
extern int condcode, S_pc;
|
||
|
||
/* Stack */
|
||
extern int TOS; /* top of stack pointer (displacement in bytes */
|
||
extern char S_stack[STKSIZE]; /* the stack itself */
|
||
|
||
/* Hash Table */
|
||
extern char hash_page[HT_SIZE];
|
||
extern int hash_disp[HT_SIZE];
|
||
|
||
/* Property List Hash Table */
|
||
extern char prop_page[HT_SIZE];
|
||
extern int prop_disp[HT_SIZE];
|
||
|
||
/* State Variables for (reset) and (scheme-reset) */
|
||
extern int FP_save, RST_ent;
|
||
extern int FNV_save[2];
|
||
extern int STL_save[2];
|
||
|
||
/* Port fields */
|
||
#define pt_direc 6
|
||
#define pt_lnlen 20
|
||
#define pt_csrcol 12
|
||
#define dtaoffs 32
|
||
|
||
/* Error message text strings */
|
||
extern char m_error[], m_src[], m_dest[], m_first[], m_second[], m_third[];
|
||
|
||
/* Macros Normally Found in STDIO.H */
|
||
#define abs(x) ((x)<0?-(x):(x))
|
||
#define max(a,b) ((a)>(b)?(a):(b))
|
||
#define min(a,b) ((a)<=(b)?(a):(b))
|
||
|
||
/* Scheme Function Macros */
|
||
#define alloc_sym(dest,len) alloc_block(dest,SYMTYPE,len+PTRSIZE+1)
|
||
|
||
#ifdef PROMEM
|
||
#define outchar(ch) printcha(ch)
|
||
#define outtext(str,len) printtxt(str,len)
|
||
#else
|
||
#define outchar(ch) givechar(ch)
|
||
#define outtext(str,len) printstr(str,len)
|
||
#endif
|
||
|
||
/* International Case Conversion Macros */
|
||
extern char locases[256];
|
||
extern char hicases[256];
|
||
#undef tolower
|
||
#define tolower(c) locases[(c)]
|
||
#undef toupper
|
||
#define toupper(c) hicases[(c)]
|
||
#undef islower
|
||
#define islower(c) ((c)!=hicases[(c)])
|
||
#undef isupper
|
||
#define isupper(c) ((c)!=locases[(c)])
|
||
#undef isspace
|
||
#undef isdigit
|
||
#define isdigit(c) isdig((c),10)
|
||
#undef isxdigit
|
||
#define isxdigit(c) isdig((c),16)
|
||
|