1 #include "../cc/cc.h" 2 #include "../tc/5.out.h" 3 4 /* 5 * 5ct/Thumb 6 * Arm 7500 7 * Thumb 8 */ 9 #define SZ_CHAR 1 10 #define SZ_SHORT 2 11 #define SZ_INT 4 12 #define SZ_LONG 4 13 #define SZ_IND 4 14 #define SZ_FLOAT 4 15 #define SZ_VLONG 8 16 #define SZ_DOUBLE 8 17 #define FNX 100 18 19 typedef struct Adr Adr; 20 typedef struct Prog Prog; 21 typedef struct Case Case; 22 typedef struct C1 C1; 23 typedef struct Multab Multab; 24 typedef struct Hintab Hintab; 25 typedef struct Var Var; 26 typedef struct Reg Reg; 27 typedef struct Rgn Rgn; 28 29 30 #define R0ISZERO 0 31 32 struct Adr 33 { 34 long offset; 35 double dval; 36 char sval[NSNAME]; 37 Ieee ieee; 38 39 Sym* sym; 40 char type; 41 char reg; 42 char name; 43 char etype; 44 }; 45 #define A ((Adr*)0) 46 47 #define INDEXED 9 48 struct Prog 49 { 50 Adr from; 51 Adr to; 52 Prog* link; 53 long lineno; 54 char as; 55 char reg; 56 uchar scond; /* not used in 5ct */ 57 }; 58 #define P ((Prog*)0) 59 60 struct Case 61 { 62 Case* link; 63 long val; 64 long label; 65 char def; 66 }; 67 #define C ((Case*)0) 68 69 struct C1 70 { 71 long val; 72 long label; 73 }; 74 75 struct Multab 76 { 77 long val; 78 char code[20]; 79 }; 80 81 struct Hintab 82 { 83 ushort val; 84 char hint[10]; 85 }; 86 87 struct Var 88 { 89 long offset; 90 Sym* sym; 91 char name; 92 char etype; 93 }; 94 95 struct Reg 96 { 97 long pc; 98 long rpo; /* reverse post ordering */ 99 100 Bits set; 101 Bits use1; 102 Bits use2; 103 104 Bits refbehind; 105 Bits refahead; 106 Bits calbehind; 107 Bits calahead; 108 Bits regdiff; 109 Bits act; 110 111 long regu; 112 long loop; /* could be shorter */ 113 114 115 Reg* log5; 116 long active; 117 118 Reg* p1; 119 Reg* p2; 120 Reg* p2link; 121 Reg* s1; 122 Reg* s2; 123 Reg* link; 124 Prog* prog; 125 }; 126 #define R ((Reg*)0) 127 128 #define NRGN 600 129 struct Rgn 130 { 131 Reg* enter; 132 short cost; 133 short varno; 134 short regno; 135 }; 136 137 EXTERN long breakpc; 138 EXTERN Case* cases; 139 EXTERN Node constnode; 140 EXTERN Node fconstnode; 141 EXTERN long continpc; 142 EXTERN long curarg; 143 EXTERN long cursafe; 144 EXTERN Prog* firstp; 145 EXTERN Prog* lastp; 146 EXTERN long maxargsafe; 147 EXTERN int mnstring; 148 EXTERN Multab multab[20]; 149 EXTERN int retok; 150 EXTERN int hintabsize; 151 EXTERN Node* nodrat; 152 EXTERN Node* nodret; 153 EXTERN Node* nodsafe; 154 EXTERN long nrathole; 155 EXTERN long nstring; 156 EXTERN Prog* p; 157 EXTERN long pc; 158 EXTERN Node regnode; 159 EXTERN char string[NSNAME]; 160 EXTERN Sym* symrathole; 161 EXTERN Node znode; 162 EXTERN Prog zprog; 163 EXTERN char reg[NREG+NFREG]; 164 EXTERN long exregoffset; 165 EXTERN long exfregoffset; 166 EXTERN int suppress; 167 168 #define BLOAD(r) band(bnot(r->refbehind), r->refahead) 169 #define BSTORE(r) band(bnot(r->calbehind), r->calahead) 170 #define LOAD(r) (~r->refbehind.b[z] & r->refahead.b[z]) 171 #define STORE(r) (~r->calbehind.b[z] & r->calahead.b[z]) 172 173 #define bset(a,n) ((a).b[(n)/32]&(1L<<(n)%32)) 174 175 #define CLOAD 4 176 #define CREF 5 177 #define CINF 1000 178 #define LOOP 3 179 180 EXTERN Rgn region[NRGN]; 181 EXTERN Rgn* rgp; 182 EXTERN int nregion; 183 EXTERN int nvar; 184 185 EXTERN Bits externs; 186 EXTERN Bits params; 187 EXTERN Bits consts; 188 EXTERN Bits addrs; 189 190 EXTERN long regbits; 191 EXTERN long exregbits; 192 193 EXTERN int change; 194 195 EXTERN Reg* firstr; 196 EXTERN Reg* lastr; 197 EXTERN Reg zreg; 198 EXTERN Reg* freer; 199 EXTERN Var var[NVAR]; 200 EXTERN long* idom; 201 EXTERN Reg** rpo2r; 202 EXTERN long maxnr; 203 204 extern char* anames[]; 205 extern Hintab hintab[]; 206 207 /* 208 * sgen.c 209 */ 210 void codgen(Node*, Node*); 211 void gen(Node*); 212 void noretval(int); 213 void usedset(Node*, int); 214 void xcom(Node*); 215 int bcomplex(Node*, Node*); 216 217 /* 218 * cgen.c 219 */ 220 void cgen(Node*, Node*); 221 void reglcgen(Node*, Node*, Node*); 222 void lcgen(Node*, Node*); 223 void bcgen(Node*, int); 224 void boolgen(Node*, int, Node*); 225 void sugen(Node*, Node*, long); 226 void layout(Node*, Node*, int, int, Node*); 227 228 /* 229 * txt.c 230 */ 231 void ginit(void); 232 void gclean(void); 233 void nextpc(void); 234 void gargs(Node*, Node*, Node*); 235 void garg1(Node*, Node*, Node*, int, Node**); 236 Node* nodconst(long); 237 Node* nod32const(vlong); 238 Node* nodfconst(double); 239 void nodreg(Node*, Node*, int); 240 void regret(Node*, Node*); 241 int tmpreg(void); 242 void regalloc(Node*, Node*, Node*); 243 void regfree(Node*); 244 void regialloc(Node*, Node*, Node*); 245 void regsalloc(Node*, Node*); 246 void regaalloc1(Node*, Node*); 247 void regaalloc(Node*, Node*); 248 void regind(Node*, Node*); 249 void gprep(Node*, Node*); 250 void raddr(Node*, Prog*); 251 void naddr(Node*, Adr*); 252 void gmovm(Node*, Node*); 253 void gmove(Node*, Node*); 254 void gins(int a, Node*, Node*); 255 void gopcode(int, Node*, Node*, Node*); 256 void gopcode2(int, Node*, Node*, Node*); 257 int samaddr(Node*, Node*); 258 void gbranch(int); 259 void patch(Prog*, long); 260 int sconst(Node*); 261 int sval(long); 262 void gpseudo(int, Sym*, Node*); 263 264 /* 265 * swt.c 266 */ 267 int swcmp(const void*, const void*); 268 void doswit(Node*); 269 void swit1(C1*, int, long, Node*); 270 void casf(void); 271 void bitload(Node*, Node*, Node*, Node*, Node*); 272 void bitstore(Node*, Node*, Node*, Node*, Node*); 273 long outstring(char*, long); 274 int mulcon(Node*, Node*); 275 Multab* mulcon0(long); 276 void nullwarn(Node*, Node*); 277 void sextern(Sym*, Node*, long, long); 278 void gextern(Sym*, Node*, long, long); 279 void outcode(void); 280 void ieeedtod(Ieee*, double); 281 282 /* 283 * list 284 */ 285 void listinit(void); 286 int Pconv(Fmt*); 287 int Aconv(Fmt*); 288 int Dconv(Fmt*); 289 int Sconv(Fmt*); 290 int Nconv(Fmt*); 291 int Bconv(Fmt*); 292 int Rconv(Fmt*); 293 294 /* 295 * reg.c 296 */ 297 Reg* rega(void); 298 int rcmp(const void*, const void*); 299 void regopt(Prog*); 300 void addmove(Reg*, int, int, int); 301 Bits mkvar(Adr*, int); 302 void prop(Reg*, Bits, Bits); 303 void loopit(Reg*, long); 304 void synch(Reg*, Bits); 305 ulong allreg(ulong, Rgn*); 306 void paint1(Reg*, int); 307 ulong paint2(Reg*, int); 308 void paint3(Reg*, int, long, int); 309 void addreg(Adr*, int); 310 311 /* 312 * peep.c 313 */ 314 void peep(void); 315 void excise(Reg*); 316 Reg* uniqp(Reg*); 317 Reg* uniqs(Reg*); 318 int regtyp(Adr*); 319 int regzer(Adr*); 320 int anyvar(Adr*); 321 int subprop(Reg*); 322 int copyprop(Reg*); 323 void constprop(Adr*, Adr*, Reg*); 324 int copy1(Adr*, Adr*, Reg*, int); 325 int copyu(Prog*, Adr*, Adr*); 326 327 int copyas(Adr*, Adr*); 328 int copyau(Adr*, Adr*); 329 int copyau1(Prog*, Adr*); 330 int copysub(Adr*, Adr*, Adr*, int); 331 int copysub1(Prog*, Adr*, Adr*, int); 332 333 long RtoB(int); 334 long FtoB(int); 335 int BtoR(long); 336 int BtoF(long); 337 338 void predicate(void); 339 int isbranch(Prog *); 340 int predicable(Prog *p); 341 int modifiescpsr(Prog *p); 342 343 #pragma varargck type "A" int 344 #pragma varargck type "B" Bits 345 #pragma varargck type "D" Adr* 346 #pragma varargck type "N" Adr* 347 #pragma varargck type "R" Adr* 348 #pragma varargck type "P" Prog* 349 #pragma varargck type "S" char* 350