/* =====> 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)