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cc2.h - scc - simple c99 compiler
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cc2.h (5625B)
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1 enum iflags {
2 BBENTRY = 1, /* basic block entry */
3 };
4
5 enum tflags {
6 SIGNF = 1 << 0, /* Signed type */
7 INTF = 1 << 1, /* integer type */
8 FLOATF = 1 << 2, /* float type */
9 STRF = 1 << 3, /* string */
10 AGGRF = 1 << 4, /* aggregate */
11 FUNF = 1 << 5, /* function */
12 PARF = 1 << 6, /* parameter */
13 INITF = 1 << 7, /* initializer flag */
14 ELLIPS = 1 << 8, /* vararg function */
15 ARRF = 1 << 9, /* array flag */
16 PTRF = 1 << 10, /* pointer flag */
17 };
18
19 enum sclass {
20 SAUTO = 'A',
21 SREG = 'R',
22 SLABEL = 'L',
23 SINDEX = 'I',
24 STMP = 'N',
25 SGLOB = 'G',
26 SEXTRN = 'X',
27 SPRIV = 'Y',
28 SLOCAL = 'T',
29 SMEMB = 'M',
30 SCONST = '#',
31 STRING = '"',
32 SNONE = 0 /* cc2 relies on SNONE being 0 in nextpc() */
33 };
34
35 enum types {
36 ELLIPSIS = 'E',
37 INT8 = 'C',
38 INT16 = 'I',
39 INT32 = 'W',
40 INT64 = 'Q',
41 UINT8 = 'K',
42 UINT16 = 'N',
43 UINT32 = 'Z',
44 UINT64 = 'O',
45 POINTER = 'P',
46 FUNCTION = 'F',
47 VECTOR = 'V',
48 UNION = 'U',
49 STRUCT = 'S',
50 BOOL = 'B',
51 FLOAT = 'J',
52 DOUBLE = 'D',
53 LDOUBLE = 'H',
54 VOID = '0'
55 };
56
57 enum op {
58 /* kind of operand */
59 /* operands */
60 OMEM = 'M',
61 OTMP = 'N',
62 OAUTO = 'A',
63 OREG = 'R',
64 OMREG = 'G',
65 OCONST = '#',
66 OSTRING = '"',
67 OLOAD = 'D',
68 OLABEL = 'L',
69 OADD = '+',
70 OSUB = '-',
71 OMUL = '*',
72 OMOD = '%',
73 ODIV = '/',
74 OSHL = 'l',
75 OSHR = 'r',
76 OLT = '<',
77 OGT = '>',
78 OLE = '[',
79 OGE = ']',
80 OEQ = '=',
81 ONE = '!',
82 OBAND = '&',
83 OBOR = '|',
84 OBXOR = '^',
85 OCPL = '~',
86 OASSIG = ':',
87 OSNEG = '_',
88 OCALL = 'c',
89 OCALLE = 'z',
90 OPAR = 'p',
91 OFIELD = '.',
92 OCOMMA = ',',
93 OASK = '?',
94 OCOLON = ' ',
95 OADDR = '\'',
96 OAND = 'a',
97 OOR = 'o',
98 ONEG = 'n',
99 OPTR = '@',
100 OCAST = 'g',
101 OINC = 'i',
102 ODEC = 'd',
103 OBUILTIN = 'm',
104 /*statements */
105 ONOP = 'q',
106 OJMP = 'j',
107 OBRANCH = 'y',
108 ORET = 'h',
109 OBLOOP = 'b',
110 OELOOP = 'e',
111 OCASE = 'v',
112 ODEFAULT = 'f',
113 OBSWITCH = 's',
114 OESWITCH = 't',
115 OBFUN = 'x',
116 OEFUN = 'k',
117 };
118
119 enum builtins {
120 BVA_START = 's',
121 BVA_END = 'e',
122 BVA_ARG = 'a',
123 BVA_COPY = 'c',
124 };
125
126 enum nerrors {
127 EEOFFUN, /* EOF while parsing function */
128 ENLABEL, /* label without statement */
129 EIDOVER, /* identifier overflow */
130 EOUTPAR, /* out pf params */
131 ESYNTAX, /* syntax error */
132 ESTACKA, /* stack unaligned */
133 ESTACKO, /* stack overflow */
134 ESTACKU, /* stack underflow */
135 ELNLINE, /* line too long */
136 ELNBLNE, /* line without new line */
137 EFERROR, /* error reading from file:%s */
138 EBADID, /* incorrect symbol id */
139 EWTACKO, /* switch stack overflow */
140 EWTACKU, /* switch stack underflow */
141 ENOSWTC, /* Out of switch statement */
142 EBBUILT, /* Unknown builtin */
143 EOVERFL, /* Numerical overflow */
144 ENUMERR
145 };
146
147 typedef struct node Node;
148 typedef struct type Type;
149 typedef struct symbol Symbol;
150 typedef struct addr Addr;
151 typedef struct inst Inst;
152
153 struct type {
154 unsigned long size;
155 unsigned long align;
156 unsigned short id;
157 short flags;
158 };
159
160 struct symbol {
161 Type type;
162 Type rtype;
163 unsigned short id;
164 unsigned short numid;
165 char *name;
166 char kind;
167 union {
168 unsigned long off;
169 Node *stmt;
170 Inst *inst;
171 } u;
172 Symbol *next, *prev;
173 Symbol *h_next;
174 };
175
176 struct node {
177 char op;
178 Type type;
179 char complex;
180 char address;
181 unsigned char flags;
182 union {
183 TUINT i;
184 TFLOAT f;
185 char reg;
186 char *s;
187 Symbol *sym;
188 char subop;
189 } u;
190 Symbol *label;
191 Node *left, *right;
192 Node *next, *prev;
193 };
194
195 struct addr {
196 char kind;
197 union {
198 char reg;
199 TUINT i;
200 Symbol *sym;
201 } u;
202 };
203
204 struct inst {
205 unsigned char op;
206 unsigned char flags;
207 Symbol *label;
208 Inst *next, *prev;
209 Addr from1, from2, to;
210 };
211
212 /* main.c */
213 extern void error(unsigned nerror, ...);
214
215 /* parse.c */
216 extern void parse(void);
217
218 /* optm.c */
219 extern Node *optm_dep(Node *np), *optm_ind(Node *np);
220
221 /* cgen.c */
222 extern Node *sethi(Node *np);
223 extern Node *cgen(Node *np);
224
225 /* peep.c */
226 extern void peephole(void);
227
228 /* code.c */
229 extern void data(Node *np);
230 extern void writeout(void), endinit(void), newfun(void);
231 extern void code(int op, Node *to, Node *from1, Node *from2);
232 extern void defvar(Symbol *), defpar(Symbol *), defglobal(Symbol *);
233 extern void setlabel(Symbol *sym), getbblocks(void);
234 extern Node *label2node(Node *np, Symbol *sym);
235 extern Node *constnode(Node *np, TUINT n, Type *tp);
236 extern Node *tmpnode(Type *);
237 extern Symbol *newlabel(void);
238 extern void pprint(char *s);
239 extern void deftype(Type *);
240
241 /* node.c */
242 #define SETCUR 1
243 #define KEEPCUR 0
244 extern void apply(Node *(*fun)(Node *));
245 extern void cleannodes(void);
246 extern void delnode(Node *np);
247 extern void deltree(Node *np);
248 extern void prtree(Node *np), prforest(char *msg);
249 extern Node *node(int op);
250 extern Node *addstmt(Node *np, int flags);
251 extern Node *delstmt(void);
252 extern Node *nextstmt(void);
253
254 /* symbol.c */
255 #define TMPSYM 0
256 extern Symbol *getsym(unsigned id);
257 extern void popctx(void);
258 extern void pushctx(void);
259 extern void freesym(Symbol *sym);
260
261 /* globals */
262 extern Symbol *curfun;
263 extern Symbol *locals;
264 extern Inst *pc, *prog;
265
266 /* target */
267 extern Type int8type, int16type, int32type, int64type,
268 uint8type, uint16type, uint32type, uint64type,
269 float32type, float64type, float80type,
270 booltype,
271 ptrtype,
272 voidtype,
273 arg_type;