compilers/lcc/src/config.h

   1 typedef struct {
   2         unsigned char max_unaligned_load;
   3         Symbol (*rmap)(int);
   4
   5         void (*blkfetch)(int size, int off, int reg, int tmp);
   6         void (*blkstore)(int size, int off, int reg, int tmp);
   7         void (*blkloop)(int dreg, int doff,
   8                          int sreg, int soff,
   9                          int size, int tmps[]);
  10         void (*_label)(Node);
  11         int (*_rule)(void*, int);
  12         short **_nts;
  13         void (*_kids)(Node, int, Node*);
  14         char **_string;
  15         char **_templates;
  16         char *_isinstruction;
  17         char **_ntname;
  18         void (*emit2)(Node);
  19         void (*doarg)(Node);
  20         void (*target)(Node);
  21         void (*clobber)(Node);
  22 } Xinterface;
  23 extern int     askregvar(Symbol, Symbol);
  24 extern void    blkcopy(int, int, int, int, int, int[]);
  25 extern int     getregnum(Node);
  26 extern int     mayrecalc(Node);
  27 extern int     mkactual(int, int);
  28 extern void    mkauto(Symbol);
  29 extern Symbol  mkreg(char *, int, int, int);
  30 extern Symbol  mkwildcard(Symbol *);
  31 extern int     move(Node);
  32 extern int     notarget(Node);
  33 extern void    parseflags(int, char **);
  34 extern int     range(Node, int, int);
  35 extern unsigned regloc(Symbol);  /* omit */
  36 extern void    rtarget(Node, int, Symbol);
  37 extern void    setreg(Node, Symbol);
  38 extern void    spill(unsigned, int, Node);
  39 extern int     widens(Node);
  40
  41 extern int      argoffset, maxargoffset;
  42 extern int      bflag, dflag;
  43 extern int      dalign, salign;
  44 extern int      framesize;
  45 extern unsigned freemask[], usedmask[];
  46 extern int      offset, maxoffset;
  47 extern int      swap;
  48 extern unsigned tmask[], vmask[];
  49 typedef struct {
  50         unsigned listed:1;
  51         unsigned registered:1;
  52         unsigned emitted:1;
  53         unsigned copy:1;
  54         unsigned equatable:1;
  55         unsigned spills:1;
  56         unsigned mayrecalc:1;
  57         void *state;
  58         short inst;
  59         Node kids[3];
  60         Node prev, next;
  61         Node prevuse;
  62         short argno;
  63 } Xnode;
  64 typedef struct {
  65         Symbol vbl;
  66         short set;
  67         short number;
  68         unsigned mask;
  69 } *Regnode;
  70 enum { IREG=0, FREG=1 };
  71 typedef struct {
  72         char *name;
  73         unsigned int eaddr;  /* omit */
  74         int offset;
  75         Node lastuse;
  76         int usecount;
  77         Regnode regnode;
  78         Symbol *wildcard;
  79 } Xsymbol;
  80 enum { RX=2 };
  81 typedef struct {
  82         int offset;
  83         unsigned freemask[2];
  84 } Env;
  85
  86 #define LBURG_MAX SHRT_MAX
  87
  88 enum { VREG=(44<<4) };
  89
  90 /* Exported for the front end */
  91 extern void             blockbeg(Env *);
  92 extern void             blockend(Env *);
  93 extern void             emit(Node);
  94 extern Node             gen(Node);
  95
  96 extern unsigned         emitbin(Node, int);
  97
  98 #ifdef NDEBUG
  99 #define debug(x) (void)0
 100 #else
 101 #define debug(x) (void)(dflag&&((x),0))
 102 #endif