1 #include "../cc/cc.h" 2 #include "../vc/v.out.h" 3 4 /* 5 * vc/mips 6 * Mips 3000 7 */ 8 #define SZ_CHAR 1 9 #define SZ_SHORT 2 10 #define SZ_INT 4 11 #define SZ_LONG 4 12 #define SZ_IND 4 13 #define SZ_FLOAT 4 14 #define SZ_VLONG 8 15 #define SZ_DOUBLE 8 16 #define FNX 100 17 18 typedef struct Adr Adr; 19 typedef struct Prog Prog; 20 typedef struct Case Case; 21 typedef struct C1 C1; 22 typedef struct Multab Multab; 23 typedef struct Hintab Hintab; 24 typedef struct Var Var; 25 typedef struct Reg Reg; 26 typedef struct Rgn Rgn; 27 28 struct Adr 29 { 30 long offset; 31 double dval; 32 char sval[NSNAME]; 33 Ieee ieee; 34 35 Sym* sym; 36 char type; 37 char reg; 38 char name; 39 char etype; 40 }; 41 #define A ((Adr*)0) 42 43 #define INDEXED 9 44 struct Prog 45 { 46 Adr from; 47 Adr to; 48 Prog* link; 49 long lineno; 50 char as; 51 char reg; 52 }; 53 #define P ((Prog*)0) 54 55 struct Case 56 { 57 Case* link; 58 vlong val; 59 long label; 60 char def; 61 char isv; 62 }; 63 #define C ((Case*)0) 64 65 struct C1 66 { 67 vlong val; 68 long label; 69 }; 70 71 struct Multab 72 { 73 long val; 74 char code[20]; 75 }; 76 77 struct Hintab 78 { 79 ushort val; 80 char hint[10]; 81 }; 82 83 struct Var 84 { 85 long offset; 86 Sym* sym; 87 char name; 88 char etype; 89 }; 90 91 struct Reg 92 { 93 long pc; 94 long rpo; /* reverse post ordering */ 95 96 Bits set; 97 Bits use1; 98 Bits use2; 99 100 Bits refbehind; 101 Bits refahead; 102 Bits calbehind; 103 Bits calahead; 104 Bits regdiff; 105 Bits act; 106 107 long regu; 108 long loop; /* could be shorter */ 109 110 Reg* log5; 111 long active; 112 113 Reg* p1; 114 Reg* p2; 115 Reg* p2link; 116 Reg* s1; 117 Reg* s2; 118 Reg* link; 119 Prog* prog; 120 }; 121 #define R ((Reg*)0) 122 123 #define NRGN 600 124 struct Rgn 125 { 126 Reg* enter; 127 short cost; 128 short varno; 129 short regno; 130 }; 131 132 EXTERN long breakpc; 133 EXTERN long nbreak; 134 EXTERN Case* cases; 135 EXTERN Node constnode; 136 EXTERN Node fconstnode; 137 EXTERN long continpc; 138 EXTERN long curarg; 139 EXTERN long cursafe; 140 EXTERN Prog* firstp; 141 EXTERN Prog* lastp; 142 EXTERN long maxargsafe; 143 EXTERN int mnstring; 144 EXTERN Multab multab[20]; 145 EXTERN int hintabsize; 146 EXTERN Node* nodrat; 147 EXTERN Node* nodret; 148 EXTERN Node* nodsafe; 149 EXTERN long nrathole; 150 EXTERN long nstring; 151 EXTERN Prog* p; 152 EXTERN long pc; 153 EXTERN Node regnode; 154 EXTERN char string[NSNAME]; 155 EXTERN Sym* symrathole; 156 EXTERN Node znode; 157 EXTERN Prog zprog; 158 EXTERN int reg[NREG+NREG]; 159 EXTERN long exregoffset; 160 EXTERN long exfregoffset; 161 162 #define BLOAD(r) band(bnot(r->refbehind), r->refahead) 163 #define BSTORE(r) band(bnot(r->calbehind), r->calahead) 164 #define LOAD(r) (~r->refbehind.b[z] & r->refahead.b[z]) 165 #define STORE(r) (~r->calbehind.b[z] & r->calahead.b[z]) 166 167 #define bset(a,n) ((a).b[(n)/32]&(1L<<(n)%32)) 168 169 #define CLOAD 4 170 #define CREF 5 171 #define CINF 1000 172 #define LOOP 3 173 174 EXTERN Rgn region[NRGN]; 175 EXTERN Rgn* rgp; 176 EXTERN int nregion; 177 EXTERN int nvar; 178 179 EXTERN Bits externs; 180 EXTERN Bits params; 181 EXTERN Bits consts; 182 EXTERN Bits addrs; 183 184 EXTERN long regbits; 185 EXTERN long exregbits; 186 187 EXTERN int change; 188 EXTERN int suppress; 189 190 EXTERN Reg* firstr; 191 EXTERN Reg* lastr; 192 EXTERN Reg zreg; 193 EXTERN Reg* freer; 194 EXTERN Var var[NVAR]; 195 EXTERN long* idom; 196 EXTERN Reg** rpo2r; 197 EXTERN long maxnr; 198 199 extern char* anames[]; 200 extern Hintab hintab[]; 201 202 /* 203 * sgen.c 204 */ 205 void codgen(Node*, Node*); 206 void gen(Node*); 207 void noretval(int); 208 void xcom(Node*); 209 int bcomplex(Node*, Node*); 210 void usedset(Node*, int); 211 212 /* 213 * cgen.c 214 */ 215 void cgen(Node*, Node*); 216 void reglcgen(Node*, Node*, Node*); 217 void lcgen(Node*, Node*); 218 void bcgen(Node*, int); 219 void boolgen(Node*, int, Node*); 220 void sugen(Node*, Node*, long); 221 void layout(Node*, Node*, int, int, Node*); 222 223 /* 224 * txt.c 225 */ 226 void ginit(void); 227 void gclean(void); 228 void nextpc(void); 229 void gargs(Node*, Node*, Node*); 230 void garg1(Node*, Node*, Node*, int, Node**); 231 Node* nodconst(long); 232 Node* nod32const(vlong); 233 Node* nodfconst(double); 234 void nodreg(Node*, Node*, int); 235 void regret(Node*, Node*); 236 void regalloc(Node*, Node*, Node*); 237 void regfree(Node*); 238 void regialloc(Node*, Node*, Node*); 239 void regsalloc(Node*, Node*); 240 void regaalloc1(Node*, Node*); 241 void regaalloc(Node*, Node*); 242 void regind(Node*, Node*); 243 void gprep(Node*, Node*); 244 void raddr(Node*, Prog*); 245 void naddr(Node*, Adr*); 246 void gmove(Node*, Node*); 247 void gins(int a, Node*, Node*); 248 void gopcode(int, Node*, Node*, Node*); 249 int samaddr(Node*, Node*); 250 void gbranch(int); 251 void patch(Prog*, long); 252 int sconst(Node*); 253 int sval(long); 254 void gpseudo(int, Sym*, Node*); 255 256 /* 257 * swt.c 258 */ 259 int swcmp(void*, void*); 260 void doswit(Node*); 261 void swit1(C1*, int, long, Node*); 262 void swit2(C1*, int, long, Node*, Node*); 263 void casf(void); 264 void bitload(Node*, Node*, Node*, Node*, Node*); 265 void bitstore(Node*, Node*, Node*, Node*, Node*); 266 long outstring(char*, long); 267 int mulcon(Node*, Node*); 268 Multab* mulcon0(long); 269 void nullwarn(Node*, Node*); 270 void gextern(Sym*, Node*, long, long); 271 void outcode(void); 272 void ieeedtod(Ieee*, double); 273 274 /* 275 * list 276 */ 277 void listinit(void); 278 int Pconv(Fmt*); 279 int Aconv(Fmt*); 280 int Dconv(Fmt*); 281 int Sconv(Fmt*); 282 int Nconv(Fmt*); 283 int Bconv(Fmt*); 284 285 /* 286 * reg.c 287 */ 288 Reg* rega(void); 289 int rcmp(void*, void*); 290 void regopt(Prog*); 291 void addmove(Reg*, int, int, int); 292 Bits mkvar(Adr*, int); 293 void prop(Reg*, Bits, Bits); 294 void loopit(Reg*, long); 295 void synch(Reg*, Bits); 296 ulong allreg(ulong, Rgn*); 297 void paint1(Reg*, int); 298 ulong paint2(Reg*, int); 299 void paint3(Reg*, int, long, int); 300 void addreg(Adr*, int); 301 302 /* 303 * peep.c 304 */ 305 void peep(void); 306 void excise(Reg*); 307 Reg* uniqp(Reg*); 308 Reg* uniqs(Reg*); 309 int regtyp(Adr*); 310 int regzer(Adr*); 311 int anyvar(Adr*); 312 int subprop(Reg*); 313 int copyprop(Reg*); 314 int copy1(Adr*, Adr*, Reg*, int); 315 int copyu(Prog*, Adr*, Adr*); 316 317 int copyas(Adr*, Adr*); 318 int copyau(Adr*, Adr*); 319 int copyau1(Prog*, Adr*); 320 int copysub(Adr*, Adr*, Adr*, int); 321 int copysub1(Prog*, Adr*, Adr*, int); 322 323 long RtoB(int); 324 long FtoB(int); 325 int BtoR(long); 326 int BtoF(long); 327 328 #pragma varargck type "A" int 329 #pragma varargck type "B" Bits 330 #pragma varargck type "D" Adr* 331 #pragma varargck type "N" Adr* 332 #pragma varargck type "P" Prog* 333 #pragma varargck type "S" char* 334