054b9c87e1
This takes literal integers, not expressions, because each machine defines its own valu_t for expressions, but valu_t can be too narrow for an 8-byte integer, and I don't want to change all the machines to use a wider valu_t. Instead, change how the assembler parses literal integers. Remove the NUMBER token and add a NUMBER8 token for an int64_t. The new .data8 pseudo emits all 8 bytes of the int64_t; expressions narrow the int64_t to a valu_t. Don't add any checks for integer overflow; expressions and .data* pseudos continue to ignore overflow when a number is too wide. This commit requires int64_t and uint64_t in the C compiler to build the assembler. The ACK's own C compiler doesn't have these. For the assembler's temporary file, add NUMBER4 to store 4-byte integers. NUMBER4 acts like NUMBER[0-3] and only stores a non-negative integer. Each negative integer now takes 8 bytes (up from 4) in the temporary file. Move the `\fI` and `\fP` in the uni_ass(6) manual, so the square brackets in `thing [, thing]*` are not italic. This looks nicer in my terminal, where italic text is underlined.
166 lines
4.1 KiB
C
166 lines
4.1 KiB
C
/* $Id$ */
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/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*/
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/* @(#)comm1.h 1.5 */
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/*
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* variable declarations
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*/
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#ifdef extern
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#define INIT(x) = x
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#else
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#define INIT(x) /* empty */
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#endif
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extern short pass INIT(PASS_1);
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/* PASS 1, 2 or 3 */
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extern short peekc; /* push back symbol (PASS_1) */
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extern short unresolved; /* number of unresolved references */
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extern long lineno; /* input line number */
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extern short hllino; /* high-level language line number */
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extern short nerrors; /* terminate at end of pass if set */
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extern short sflag INIT(SYM_DEF);
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/* -s option (symbol table info) */
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extern char *progname; /* for error messages */
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extern char *modulename; /* for error messages */
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extern common_t *commons; /* header of commons list */
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#ifdef ASLD
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extern short archmode; /* scanning archives */
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extern long archsize; /* size of individual archive entries */
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#else
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extern short uflag; /* if 1 make undefineds extern */
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/* symbol table index for last S_UND */
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#endif
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#ifdef LISTING
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extern short dflag; /* -d option (list mode) */
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#endif
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#ifdef ASLD
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#ifdef RELOCATION
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extern short rflag; /* -r option (relocation info) */
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#endif /* RELOCATION */
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#else
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#define rflag 1
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extern valu_t relonami;
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#endif /* ASLD */
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#ifdef THREE_PASS
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extern short bflag; /* -b option (no optimizations) */
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#endif
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extern char *aoutpath INIT("a.out");
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extern FILE *input;
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extern FILE *tempfile;
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extern char *stringbuf; /* contains last string value */
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extern int stringlen; /* contains length of last string value */
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extern sect_t sect[SECTMAX];
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/*
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* specials for the location counter
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*/
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extern sect_t *DOTSCT; /* §[DOTTYP-S_MIN] or NULL */
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extern ADDR_T DOTVAL; /* DOTSCT->s_size + DOTSCT->s_base */
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extern short DOTTYP; /* S_MIN..S_MAX or S_UND */
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extern unsigned short nname; /* Counts name table index in PASS_3 */
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extern item_t *hashtab[H_TOTAL];
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extern short hashindex; /* see item_search() */
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extern item_t *fb_ptr[4*FB_SIZE];
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#ifdef THREE_PASS
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#define BITCHUNK (8 * MEMINCR)
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extern int nbits;
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extern int bitindex; /* bitindex * MEMINCR * 8 + nbits gives
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number of decisions so far
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*/
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#endif
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#ifdef LISTING
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extern short listmode; /* -d option for current pass */
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extern short listtemp; /* listmode if .list seen */
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extern short listflag; /* copied from listtemp at '\n' */
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extern short listcolm; /* column on output */
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extern short listeoln INIT(1);
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/* set by endline, tested by emit1 */
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extern FILE *listfile; /* copy of source text */
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#endif
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#ifndef extern
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extern item_t keytab[];
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extern struct outhead outhead;
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#endif
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extern int curr_token;
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/* forward function declarations */
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/* comm2.y */
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int yyparse(void);
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/* comm4.c */
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void stop(void);
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void newmodule(const char *);
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/* comm5.c */
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int yylex(void);
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void putval(int);
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int getval(int);
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int nextchar(void);
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#ifdef ASLD
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char *readident(int);
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#endif
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int hash(const char *);
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item_t *item_search(const char *);
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void item_insert(item_t *, int);
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item_t *item_alloc(int);
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item_t *fb_alloc(int);
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item_t *fb_shift(int);
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/* comm6.c */
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void newequate(item_t *, int);
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void newident(item_t *, int);
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void newlabel(item_t *);
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void newsect(item_t *);
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void newbase(valu_t);
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void newcomm(item_t *, valu_t);
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void switchsect(int);
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void align(valu_t);
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#ifdef RELOCATION
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void newrelo(int, int);
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#endif
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long new_string(const char *);
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void newsymb(const char *, int, int, valu_t);
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/* comm7.c */
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valu_t load(const item_t *);
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int store(item_t *, valu_t);
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char *remember(char *);
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int combine(int, int, int);
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#ifdef LISTING
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int printx(int, valu_t);
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void listline(int);
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#endif
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#ifdef THREE_PASS
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int small(int, int);
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#endif
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void emit1(int);
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void emit2(int);
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void emit4(long);
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void emitx(valu_t, int);
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void emit8(int64_t);
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void emitstr(int);
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void emitf(int size, int negative);
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void yyerror(const char *);
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void nosect(void);
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void fatal(const char *, ...);
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void serror(const char *, ...);
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void warning(const char *, ...);
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void nofit(void);
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/* ========== Machine dependent C declarations ========== */
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#include "mach1.c"
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