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[/] [System09/] [rev_86/] [Tools/] [as09/] [as.h] - Rev 168
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/* * machine independent definitions and global variables */ #define YES 1 #define NO 0 #define ERR (-1) #define MAXBUF 128 #define MAXOP 10 /* longest mnemonic */ #define MAXLAB 16 #define E_LIMIT 32 #define P_LIMIT 64 #define MAXINCFILES 30 /* nestinf levels for INCLUDE files at one time */ /* ver TER_2.0 6/17/89 */ #define MAXIFD 30 /* max nesting levels for IFD/IFND statements */ /* ver TER_2.0 2 Jul 89 */ #define IF_FALSE 0 /* tokens for IfMachine (conditional assembly) */ #define IF_TRUE 1 /* added ver TER_2.0 27Jun89 */ #define IF_ELSE 2 #define IF_ENDIF 3 #define IF_NORMAL 4 #define IF_END 5 #define IF_EOF 6 /* end tokens */ /* Character Constants */ #define NEWLINE '\n' #define CR 0x0D /* <CR> or ^M ver TER_1.1 June 3, 1989 */ #define TAB '\t' #define BLANK ' ' #define EOS '\0' /* Opcode Classes */ #define INH 0 /* Inherent */ #define GEN 1 /* General Addressing */ #define IMM 2 /* Immediate only */ #define REL 3 /* Short Relative */ #define P2REL 4 /* Long Relative */ #define P1REL 5 /* Long Relative (LBRA and LBSR)*/ #define NOIMM 6 /* General except for Immediate */ #define P2GEN 7 /* Page 2 General */ #define P3GEN 8 /* Page 3 General */ #define RTOR 9 /* Register To Register */ #define INDEXED 10 /* Indexed only */ #define RLIST 11 /* Register List */ #define P2NOIMM 12 /* Page 2 No Immediate */ #define P2INH 13 /* Page 2 Inherent */ #define P3INH 14 /* Page 3 Inherent */ #define GRP2 15 /* Group 2 (Read/Modify/Write) */ #define LONGIMM 16 /* Immediate mode takes 2 bytes */ #define BTB 17 /* Bit test and branch */ #define SETCLR 18 /* Bit set or clear */ #define CPD 19 /* compare d 6811 */ #define XLIMM 20 /* LONGIMM for X 6811 */ #define XNOIMM 21 /* NOIMM for X 6811 */ #define YLIMM 22 /* LONGIMM for Y 6811 */ #define YNOIMM 23 /* NOIMM for Y 6811 */ #define FAKE 24 /* convenience mnemonics 6804 */ #define APOST 25 /* A accum after opcode 6804 */ #define BPM 26 /* branch reg plus/minus 6804 */ #define CLRX 27 /* mvi x,0 6804 */ #define CLRY 28 /* mvi y,0 6804 */ #define LDX 29 /* mvi x,expr 6804 */ #define LDY 30 /* mvi y,expr 6804 */ #define MVI 31 /* mvi 6804 */ #define EXT 32 /* extended 6804 */ #define BIT 33 /* bit manipulation 6301 */ #define SYS 34 /* syscalls (really swi) */ #define PSEUDO 35 /* Pseudo ops */ /* global variables */ int Line_num =0; /* current line number */ int Err_count =0; /* total number of errors */ char Line[MAXBUF] = {0}; /* input line buffer */ char Label[MAXLAB] = {0}; /* label on current line */ char Op[MAXOP] = {0}; /* opcode mnemonic on current line */ char Operand[MAXBUF] = {0}; /* remainder of line after op */ /* (up to ';' rel TER_2.0) */ char *Optr =0; /* pointer into current Operand field */ int Result =0; /* result of expression evaluation */ int Force_word =0; /* Result should be a word when set */ int Force_byte =0; /* Result should be a byte when set */ int Pc =0; /* Program Counter */ int Old_pc =0; /* Program Counter at beginning */ int Last_sym =0; /* result of last lookup */ int Pass =0; /* Current pass # */ int N_files =0; /* Number of files to assemble */ FILE *Fd =0; /* Current input file structure */ int Cfn =0; /* Current file number 1...n */ int Ffn =0; /* forward ref file # */ int F_ref =0; /* next line with forward ref */ char **Argv =0; /* pointer to file names */ int E_total =0; /* total # bytes for one line */ int E_bytes[E_LIMIT] = {0}; /* Emitted held bytes */ int E_pc =0; /* Pc at beginning of collection*/ int Lflag = 0; /* listing flag 0=nolist, 1=list*/ int P_force = 0; /* force listing line to include Old_pc */ int P_total =0; /* current number of bytes collected */ int P_bytes[P_LIMIT] = {0}; /* Bytes collected for listing */ int Cflag = 0; /* cycle count flag */ int Cycles = 0; /* # of cycles per instruction */ long Ctotal = 0; /* # of cycles seen so far */ int Sflag = 0; /* symbol table flag, 0=no symbol */ int N_page = 0; /* new page flag */ int Page_num = 2; /* page number */ int CREflag = 0; /* cross reference table flag */ int CRflag = 0; /* flag to add <CR><LF> to S record */ /* added ver TER_1.1 June 3, 1989 */ int nfFlag = 1; /* if=1 number INCLUDE files separate */ /* ver TER_2.0 June 17, 1989 */ int FdCount = 0; /* INCLUDE files "stack" pointer */ /* ver TER_2.0 June 17, 1989 */ char InclFName[MAXBUF]={0}; /* current INCLUDE file name */ int F_total = 0; /* total bytes emitted in S file */ /* ver (TER) 2.02 19 Jun 89 */ int Page_lines = 0; /* total lines this page */ /* ver (TER) 2.02 19 Jun 89 */ int Pflag50 = 0; /* if 1 then form feed every 50 lines */ /* ver (TER) 2.02 19 Jun 89 */ int Pflag75 = 0; /* if 1 then form feed every 75 lines */ /* ver (DWC) 2.10 8 Oct 2001 */ int PC_Save[4] = {0,0,0,0}; /* saved contents of CODE,DATA,BSS,AUTO PCs */ /* ver TER_2.09 25 July 89 */ int PC_ptr = 0; /* index or pointer to current PC */ /* initialized to CODE ver TER_2.09 25 July 89 */ struct link { /* linked list to hold line numbers */ int L_num; /* line number */ struct link *next; /* pointer to next node */ }; struct nlist { /* basic symbol table entry */ char *name; int def; /* value of symbol, assigned by user */ int def2; /* value assign by assembler, e.g. defined this pass? */ /* added ver TER_2.0 4 Jul 89 */ struct nlist *Lnext ; /* left node of the tree leaf */ struct nlist *Rnext; /* right node of the tree leaf */ struct link *L_list; /* pointer to linked list of line numbers */ }; struct oper { /* an entry in the mnemonic table */ char *mnemonic; /* its name */ char class; /* its class */ int opcode; /* its base opcode */ char cycles; /* its base # of cycles */ }; struct nlist *root; /* root node of the tree */ FILE *Objfil =0; /* object file's file descriptor*/ char Obj_name[] = {" "}; struct InclFile { /* The INCLUDE files nesting "stack" */ /* added ver TER_2.0 6/17/89 */ FILE *fp; /* saved file pointer (next level up) */ int line_num; /* saved line number count */ char *name; /* saved file name */ }; struct InclFile InclFiles[MAXINCFILES]; /* the nesting stack itself */ /* defined in doXX.c */ void do_op(int opcode,int class); /* defined in symtab.c */ struct nlist * lookup(char *name); /* defined in util.c */ void pouterror(); void f_record(); void NewPage();
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