/* asdata.c */ /* * (C) Copyright 1989-1995 * All Rights Reserved * * Alan R. Baldwin * 721 Berkeley St. * Kent, Ohio 44240 */ #include #include #include //#include #include "asm.h" /*)Module asdata.c * * The module asdata.c contains the global constants, * structures, and variables used in the assembler. */ int aserr; /* ASxxxx error counter */ jmp_buf jump_env; /* compiler dependent structure * used by setjmp() and longjmp() */ int inpfil; /* count of assembler * input files specified */ int incfil; /* current file handle index * for include files */ int cfile; /* current file handle index * of input assembly files */ int flevel; /* IF-ELSE-ENDIF flag will be non * zero for false conditional case */ int tlevel; /* current conditional level */ int ifcnd[MAXIF+1]; /* array of IF statement condition * values (0 = FALSE) indexed by tlevel */ int iflvl[MAXIF+1]; /* array of IF-ELSE-ENDIF flevel * values indexed by tlevel */ char afn[FILSPC]; /* afile temporary file name */ char srcfn[MAXFIL][FILSPC]; /* array of source file names */ int srcline[MAXFIL]; /* source line number */ char incfn[MAXINC][FILSPC]; /* array of include file names */ int incline[MAXINC]; /* include line number */ int radix; /* current number conversion radix: * 2 (binary), 8 (octal), 10 (decimal), * 16 (hexadecimal) */ int line; /* current assembler source * line number */ int page; /* current page number */ int lop; /* current line number on page */ int pass; /* assembler pass number */ int lflag; /* -l, generate listing flag */ int gflag; /* -g, make undefined symbols global flag */ int aflag; /* -a, make all symbols global flag */ int oflag; /* -o, generate relocatable output flag */ int sflag; /* -s, generate symbol table flag */ int pflag; /* -p, enable listing pagination */ int xflag; /* -x, listing radix flag */ int fflag; /* -f(f), relocations flagged flag */ addr_t laddr; /* address of current assembler line * or value of .if argument */ addr_t fuzz; /* tracks pass to pass changes in the * address of symbols caused by * variable length instruction formats */ int lmode; /* listing mode */ char *ep; /* pointer into error list * array eb[NERR] */ char eb[NERR]; /* array of generated error codes */ char *ip; /* pointer into the assembler-source * text line in ib[] */ char ib[NINPUT]; /* assembler-source text line */ char *cp; /* pointer to assembler output * array cb[] */ char cb[NCODE]; /* array of assembler output values */ int *cpt; /* pointer to assembler relocation type * output array cbt[] */ int cbt[NCODE]; /* array of assembler relocation types * describing the data in cb[] */ char tb[NTITL]; /* Title string buffer */ char stb[NSBTL]; /* Subtitle string buffer */ char symtbl[] = { "Symbol Table" }; char aretbl[] = { "Area Table" }; char module[NCPS]; /* module name string */ /* * The mne structure is a linked list of the assembler * mnemonics and directives. The list of mnemonics and * directives contained in the device dependent file * xxxpst.c are hashed and linked into NHASH lists in * module assym.c by syminit(). The structure contains * the mnemonic/directive name, a subtype which directs * the evaluation of this mnemonic/directive, a flag which * is used to detect the end of the mnemonic/directive * list in xxxpst.c, and a value which is normally * associated with the assembler mnemonic base instruction * value. * * struct mne * { * struct mne *m_mp; Hash link * char m_id[NCPS]; Mnemonic * char m_type; Mnemonic subtype * char m_flag; Mnemonic flags * addr_t m_valu; Value * }; */ struct mne *mnehash[NHASH]; /* * The sym structure is a linked list of symbols defined * in the assembler source files. The first symbol is "." * defined here. The entry 'struct tsym *s_tsym' * links any temporary symbols following this symbol and * preceeding the next normal symbol. The structure also * contains the symbol's name, type (USER or NEW), flag * (global, assigned, and multiply defined), a pointer * to the area structure defining where the symbol is * located, a reference number assigned by outgsd() in * asout.c, and the symbols address relative to the base * address of the area where the symbol is located. * * struct sym * { * struct sym *s_sp; Hash link * struct tsym *s_tsym; Temporary symbol link * char s_id[NCPS]; Symbol * char s_type; Symbol subtype * char s_flag; Symbol flags * struct area *s_area; Area line, 0 if absolute * int s_ref; Ref. number * addr_t s_addr; Address * }; */ struct sym sym[] = { NULL, NULL, ".", S_USER, S_END, NULL, 0, 0 }; struct sym *symp; /* pointer to a symbol structure */ struct sym *symhash[NHASH]; /* array of pointers to NHASH * linked symbol lists */ /* * The area structure contains the parameter values for a * specific program or data section. The area structure * is a linked list of areas. The initial default area * is "_CODE" defined here, the next area structure * will be linked to this structure through the structure * element 'struct area *a_ep'. The structure contains the * area name, area reference number ("_CODE" is 0) determined * by the order of .area directives, area size determined * from the total code and/or data in an area, area fuzz is * an variable used to track pass to pass changes in the * area size caused by variable length instruction formats, * and area flags which specify the area's relocation type. * * struct area * { * struct area *a_ap; Area link * char a_id[NCPS]; Area Name * int a_ref; Reference number * addr_t a_size; Area size * addr_t a_fuzz; Area fuzz * int a_flag; Area flags * }; */ struct area area[] = { NULL, "_CODE", 0, 0, 0, A_CON|A_REL }; struct area *areap; /* pointer to an area structure */ FILE *lfp; /* list output file handle */ FILE *ofp; /* relocation output file handle */ FILE *tfp; /* symbol table output file handle */ FILE *sfp[MAXFIL]; /* array of assembler-source file handles */ FILE *ifp[MAXINC]; /* array of include-file file handles */ /* * array of character types, one per * ASCII character */ unsigned char ctype[128] = { /*NUL*/ ILL, ILL, ILL, ILL, ILL, ILL, ILL, ILL, /*BS*/ ILL, SPACE, ILL, ILL, SPACE, ILL, ILL, ILL, /*DLE*/ ILL, ILL, ILL, ILL, ILL, ILL, ILL, ILL, /*CAN*/ ILL, ILL, ILL, ILL, ILL, ILL, ILL, ILL, /*SPC*/ SPACE, ETC, ETC, ETC, LETTER, BINOP, BINOP, ETC, /*(*/ ETC, ETC, BINOP, BINOP, ETC, BINOP, LETTER, BINOP, /*0*/ DGT2, DGT2, DGT8, DGT8, DGT8, DGT8, DGT8, DGT8, /*8*/ DGT10, DGT10, ETC, ETC, BINOP, ETC, BINOP, ETC, /*@*/ ETC, LTR16, LTR16, LTR16, LTR16, LTR16, LTR16, LETTER, /*H*/ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, /*P*/ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, /*X*/ LETTER, LETTER, LETTER, ETC, ETC, ETC, BINOP, LETTER, /*`*/ ETC, LTR16, LTR16, LTR16, LTR16, LTR16, LTR16, LETTER, /*h*/ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, /*p*/ LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, LETTER, /*x*/ LETTER, LETTER, LETTER, ETC, BINOP, ETC, ETC, ETC }; /* * an array of characters which * perform the case translation function */ #if CASE_SENSITIVE #else char ccase[128] = { /*NUL*/ '\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007', /*BS*/ '\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017', /*DLE*/ '\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027', /*CAN*/ '\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037', /*SPC*/ '\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047', /*(*/ '\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057', /*0*/ '\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067', /*8*/ '\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077', /*@*/ '\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147', /*H*/ '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157', /*P*/ '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167', /*X*/ '\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137', /*`*/ '\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147', /*h*/ '\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157', /*p*/ '\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167', /*x*/ '\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177' }; #endif