ref: ddd03ea3045bd6d12db62662695479317a44cbe0
dir: /as/as.h/
/* * First 3 bits of flags in segments and symbols are for the * type of segment */ enum symtype { TUNDEF = 0, TABS = 1, TTEXT = 2, TBSS = 3, TDATA = 4, TREG = 5, TMASK = 7, }; enum secflags { SRELOC = 1 << 4, SREAD = 1 << 5, SWRITE = 1 << 6, SFILE = 1 << 7, }; enum symflags { FCOMMON = 1 << 4, FLOCAL = 1 << 5, FEXTERN = 1 << 6, FUNDEF = 1 << 7, }; enum endianess { BIG_ENDIAN = -1, LITTLE_ENDIAN = 1 }; enum common_args { AIMM = 1, ASTR, AREG, AIMM8, AIMM16, AIMM32, AIMM64, AINDIR, AINDEX, ADIRECT, AREG_OFF, AMAX, AREP = 128 }; #define MAXSYM 63 typedef struct reloc Reloc; typedef struct ins Ins; typedef struct op Op; typedef struct section Section; typedef struct symbol Symbol; typedef struct node Node; typedef struct string String; typedef void Format(Op *, Node **); struct string { char *buf; size_t offset; }; struct line { char *label; char *op; char *args; }; struct ins { int begin, end; char *str; }; struct reloc { size_t offset; Symbol *sym; unsigned char flags; unsigned char size; unsigned char nbits; unsigned char shift; }; struct op { unsigned char flags; char size; void (*format)(Op *, Node **); unsigned char *bytes; unsigned char *args; }; struct section { String name; char *mem; unsigned char flags; TUINT base; TUINT max; TUINT curpc; TUINT pc; struct section *next; }; struct symbol { String name; unsigned char flags; unsigned char pass; unsigned char argtype; TUINT value; struct symbol *next; struct symbol *hash; }; struct node { unsigned char op; unsigned char addr; struct symbol *sym; struct node *left; struct node *right; }; /* symbol.c */ extern void isections(void); extern void emit(Section *sec, char *bytes, int nbytes); extern Section *section(char *name); extern Symbol *tmpsym(TUINT val); extern void killtmp(void); extern int toobig(Node *np, int type); extern void dumpstab(char *msg); extern String newstring(char *s); /* main.c */ extern Symbol *lookup(char *name, int type); extern Symbol *deflabel(char *name); /* parser.c */ extern Node **getargs(char *s); extern void error(char *msg, ...); /* Avoid errors in files where stdio is not included */ #ifdef stdin extern int nextline(FILE *fp, struct line *linep); #endif /* expr.c */ extern Node *expr(char **s); extern void deltree(Node *np); /* proc.c */ extern void iarch(void); extern int match(Op *op, Node **args); /* ins.c */ extern char *tobytes(TUINT v, int n, int inc); /* format.c */ extern void writeout(char *name); extern void reloc(Symbol *sym, unsigned flags, unsigned size, unsigned nbits, unsigned shift); /* * Definition of global variables */ extern Section *cursec, *seclist; extern int nr_ins; extern Ins instab[]; extern Op optab[]; extern int pass; extern TUINT maxaddr; extern int endian; extern Symbol *linesym, *symlist; extern char *filename;