Initial revision

h/cgg_cg.h

@@ -0,0 +1,154 @@
+/* $Header$ */
+
+/* offsets of interesting fields in EM-pattern */
+
+#define PO_HASH         0
+#define PO_NEXT         1
+#define PO_MATCH        3
+
+#define ILLHASH 0177777
+
+
+/* Commands for codegenerator, in low order 5 bits of byte */
+
+#define DO_NEXTEM       0
+#define DO_MATCH        1
+#define DO_XMATCH	2
+#define DO_XXMATCH	3
+#define DO_REMOVE       4
+#define DO_DEALLOCATE   5
+#define DO_REALLOCATE   6
+#define DO_ALLOCATE     7
+#define DO_MOVE         10
+#define DO_ERASE        11
+#define DO_TOKREPLACE   12
+#define DO_EMREPLACE    13
+#define DO_COST         14
+#define DO_RETURN       15
+#define DO_COERC        16
+#define DO_PRETURN	17
+#define DO_RREMOVE	18
+#define DO_INSTR	19
+#define DO_TEST		20
+#define DO_DLINE	21
+#define DO_SETCC	22
+
+#ifndef MAXATT
+#define MAXATT TOKENSIZE
+#endif
+
+typedef struct instance {
+	short in_which;
+#               define IN_COPY          1
+#		define IN_MEMB		2
+#               define IN_RIDENT        3
+#               define IN_ALLOC         4
+#               define IN_DESCR         5
+#               define IN_S_DESCR       6
+#               define IN_D_DESCR       7
+	short in_info[MAXATT+1];
+} inst_t,*inst_p;
+
+typedef struct set {
+	short set_size;
+	short set_val[SETSIZE];
+} set_t,*set_p;
+
+typedef struct {
+	short m_set1;           /* number of tokenexpr in move: from */
+	short m_expr1;          /* optional expression */
+	short m_set2;           /* number of tokenexpr in move: to */
+	short m_expr2;          /* optional expression */
+	short m_cindex;         /* code index to really do it */
+} move_t, *move_p;
+
+typedef struct {
+	short t_set;		/* number of tokenexpr in test */
+	short t_expr;		/* optional expression */
+	short t_cindex;		/* code index to really do it */
+} test_t, *test_p;
+
+struct exprnode {
+	short ex_operator;
+	short ex_lnode;
+	short ex_rnode;
+};
+typedef struct exprnode node_t;
+typedef struct exprnode *node_p;
+
+/*
+ * contents of .ex_operator
+ */
+
+#define EX_TOKFIELD     0
+#define EX_ARG          1
+#define EX_CON          2
+#define EX_ALLREG       3
+#define EX_SAMESIGN     4
+#define EX_SFIT         5
+#define EX_UFIT         6
+#define EX_ROM          7
+#define EX_NCPEQ        8
+#define EX_SCPEQ        9
+#define EX_RCPEQ        10
+#define EX_NCPNE        11
+#define EX_SCPNE        12
+#define EX_RCPNE        13
+#define EX_NCPGT        14
+#define EX_NCPGE        15
+#define EX_NCPLT        16
+#define EX_NCPLE        17
+#define EX_OR2          18
+#define EX_AND2         19
+#define EX_PLUS         20
+#define EX_CAT          21
+#define EX_MINUS        22
+#define EX_TIMES        23
+#define EX_DIVIDE       24
+#define EX_MOD          25
+#define EX_LSHIFT       26
+#define EX_RSHIFT       27
+#define EX_NOT          28
+#define EX_COMP         29
+#define EX_STRING       31
+#define EX_DEFINED      32
+#define EX_SUBREG       33
+#define EX_TOSTRING     34
+#define EX_UMINUS       35
+#define EX_REG          36
+#define EX_LOWW		37
+#define EX_HIGHW	38
+#define EX_INREG	39
+#define EX_REGVAR	40
+
+
+typedef struct {        /* to stack coercions */
+	short c1_texpno;        /* token expression number */
+	short c1_expr;		/* boolean expression */
+	short c1_prop;		/* property of register needed */
+	short c1_codep;         /* code index */
+} c1_t,*c1_p;
+
+#ifdef MAXSPLIT
+typedef struct {        /* splitting coercions */
+	short c2_texpno;        /* token expression number */
+	short c2_expr;		/* optional boolean expression */
+	short c2_nsplit;        /* split factor */
+	short c2_repl[MAXSPLIT];/* replacement instances */
+	short c2_codep;         /* code index */
+} c2_t,*c2_p;
+#endif MAXSPLIT
+
+typedef struct {        /* one to one coercions */
+	short c3_texpno;        /* token expression number */
+	short c3_expr;		/* boolean expression */
+	short c3_prop;          /* property of register needed */
+	short c3_repl;          /* replacement instance */
+	short c3_codep;         /* code index */
+} c3_t,*c3_p;
+
+
+#define getint(a,b) \
+	if ((a=((*(b)++)&BMASK)) >= 128) {\
+		a = ((a-128)<<BSHIFT) | (*(b)++&BMASK); \
+	}