2005-08-26 17:39:27 +00:00
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typedef struct {
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unsigned char max_unaligned_load;
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Symbol (*rmap)(int);
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void (*blkfetch)(int size, int off, int reg, int tmp);
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void (*blkstore)(int size, int off, int reg, int tmp);
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void (*blkloop)(int dreg, int doff,
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int sreg, int soff,
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int size, int tmps[]);
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void (*_label)(Node);
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int (*_rule)(void*, int);
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short **_nts;
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void (*_kids)(Node, int, Node*);
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char **_string;
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char **_templates;
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char *_isinstruction;
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char **_ntname;
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void (*emit2)(Node);
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void (*doarg)(Node);
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void (*target)(Node);
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void (*clobber)(Node);
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} Xinterface;
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extern int askregvar(Symbol, Symbol);
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extern void blkcopy(int, int, int, int, int, int[]);
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extern int getregnum(Node);
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extern int mayrecalc(Node);
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extern int mkactual(int, int);
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extern void mkauto(Symbol);
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extern Symbol mkreg(char *, int, int, int);
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extern Symbol mkwildcard(Symbol *);
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extern int move(Node);
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extern int notarget(Node);
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extern void parseflags(int, char **);
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extern int range(Node, int, int);
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extern unsigned regloc(Symbol); /* omit */
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extern void rtarget(Node, int, Symbol);
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extern void setreg(Node, Symbol);
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extern void spill(unsigned, int, Node);
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extern int widens(Node);
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extern int argoffset, maxargoffset;
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extern int bflag, dflag;
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extern int dalign, salign;
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extern int framesize;
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extern unsigned freemask[], usedmask[];
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extern int offset, maxoffset;
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extern int swap;
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extern unsigned tmask[], vmask[];
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typedef struct {
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unsigned listed:1;
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unsigned registered:1;
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unsigned emitted:1;
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unsigned copy:1;
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unsigned equatable:1;
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unsigned spills:1;
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unsigned mayrecalc:1;
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void *state;
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short inst;
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Node kids[3];
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Node prev, next;
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Node prevuse;
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short argno;
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} Xnode;
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typedef struct {
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Symbol vbl;
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short set;
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short number;
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unsigned mask;
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} *Regnode;
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enum { IREG=0, FREG=1 };
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typedef struct {
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char *name;
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unsigned int eaddr; /* omit */
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int offset;
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Node lastuse;
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int usecount;
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Regnode regnode;
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Symbol *wildcard;
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} Xsymbol;
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enum { RX=2 };
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typedef struct {
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int offset;
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unsigned freemask[2];
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} Env;
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#define LBURG_MAX SHRT_MAX
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enum { VREG=(44<<4) };
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/* Exported for the front end */
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extern void blockbeg(Env *);
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extern void blockend(Env *);
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extern void emit(Node);
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extern Node gen(Node);
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extern unsigned emitbin(Node, int);
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#ifdef NDEBUG
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#define debug(x) (void)0
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#else
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#define debug(x) (void)(dflag&&((x),0))
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#endif
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