1 #include "../cc/cc.h" 2 #include "../ic/i.out.h" 3 4 /* 5 * zc/riscv 6 * RISC-V 32-bit 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 Node vconstnode; 138 EXTERN long continpc; 139 EXTERN long curarg; 140 EXTERN long cursafe; 141 EXTERN Prog* firstp; 142 EXTERN Prog* lastp; 143 EXTERN long maxargsafe; 144 EXTERN int mnstring; 145 EXTERN Multab multab[20]; 146 EXTERN int hintabsize; 147 EXTERN Node* nodrat; 148 EXTERN Node* nodret; 149 EXTERN Node* nodsafe; 150 EXTERN long nrathole; 151 EXTERN long nstring; 152 EXTERN Prog* p; 153 EXTERN long pc; 154 EXTERN Node regnode; 155 EXTERN Node vregnode; 156 EXTERN char string[NSNAME]; 157 EXTERN Sym* symrathole; 158 EXTERN Node znode; 159 EXTERN Prog zprog; 160 EXTERN int reg[NREG+NREG]; 161 EXTERN long exregoffset; 162 EXTERN long exfregoffset; 163 164 #define BLOAD(r) band(bnot(r->refbehind), r->refahead) 165 #define BSTORE(r) band(bnot(r->calbehind), r->calahead) 166 #define LOAD(r) (~r->refbehind.b[z] & r->refahead.b[z]) 167 #define STORE(r) (~r->calbehind.b[z] & r->calahead.b[z]) 168 169 #define bset(a,n) ((a).b[(n)/32]&(1L<<(n)%32)) 170 171 #define CLOAD 4 172 #define CREF 5 173 #define CINF 1000 174 #define LOOP 3 175 176 EXTERN Rgn region[NRGN]; 177 EXTERN Rgn* rgp; 178 EXTERN int nregion; 179 EXTERN int nvar; 180 181 EXTERN Bits externs; 182 EXTERN Bits params; 183 EXTERN Bits consts; 184 EXTERN Bits addrs; 185 186 EXTERN long regbits; 187 EXTERN long exregbits; 188 189 EXTERN int change; 190 EXTERN int suppress; 191 192 EXTERN Reg* firstr; 193 EXTERN Reg* lastr; 194 EXTERN Reg zreg; 195 EXTERN Reg* freer; 196 EXTERN Var var[NVAR]; 197 EXTERN long* idom; 198 EXTERN Reg** rpo2r; 199 EXTERN long maxnr; 200 201 extern char* anames[]; 202 extern Hintab hintab[]; 203 204 /* 205 * sgen.c 206 */ 207 void codgen(Node*, Node*); 208 void gen(Node*); 209 void noretval(int); 210 void xcom(Node*); 211 int bcomplex(Node*, Node*); 212 void usedset(Node*, int); 213 214 /* 215 * cgen.c 216 */ 217 void cgen(Node*, Node*); 218 void reglcgen(Node*, Node*, Node*); 219 void lcgen(Node*, Node*); 220 void bcgen(Node*, int); 221 void boolgen(Node*, int, Node*); 222 void sugen(Node*, Node*, long); 223 void layout(Node*, Node*, int, int, Node*); 224 225 /* 226 * txt.c 227 */ 228 void ginit(void); 229 void gclean(void); 230 void nextpc(void); 231 void gargs(Node*, Node*, Node*); 232 void garg1(Node*, Node*, Node*, int, Node**); 233 Node* nodconst(long); 234 Node* nod32const(vlong); 235 Node* nodfconst(double); 236 Node* nodgconst(vlong, Type*); 237 void nodreg(Node*, Node*, int); 238 void regret(Node*, Node*); 239 void regalloc(Node*, Node*, Node*); 240 void regfree(Node*); 241 void regialloc(Node*, Node*, Node*); 242 void regsalloc(Node*, Node*); 243 void regaalloc1(Node*, Node*); 244 void regaalloc(Node*, Node*); 245 void regind(Node*, Node*); 246 void gprep(Node*, Node*); 247 void raddr(Node*, Prog*); 248 void naddr(Node*, Adr*); 249 void gmove(Node*, Node*); 250 void gins(int a, Node*, Node*); 251 void gopcode(int, Node*, Node*, Node*); 252 int samaddr(Node*, Node*); 253 void gbranch(int); 254 void patch(Prog*, long); 255 int sconst(Node*); 256 int sval(long); 257 void gpseudo(int, Sym*, Node*); 258 259 /* 260 * swt.c 261 */ 262 int swcmp(void*, void*); 263 void doswit(Node*); 264 void swit1(C1*, int, long, Node*); 265 void swit2(C1*, int, long, Node*, Node*); 266 void casf(void); 267 void bitload(Node*, Node*, Node*, Node*, Node*); 268 void bitstore(Node*, Node*, Node*, Node*, Node*); 269 long outstring(char*, long); 270 int mulcon(Node*, Node*); 271 Multab* mulcon0(long); 272 void nullwarn(Node*, Node*); 273 void gextern(Sym*, Node*, long, long); 274 void outcode(void); 275 void ieeedtod(Ieee*, double); 276 277 /* 278 * list 279 */ 280 void listinit(void); 281 int Pconv(Fmt*); 282 int Aconv(Fmt*); 283 int Dconv(Fmt*); 284 int Sconv(Fmt*); 285 int Nconv(Fmt*); 286 int Bconv(Fmt*); 287 288 /* 289 * reg.c 290 */ 291 Reg* rega(void); 292 int rcmp(void*, void*); 293 void regopt(Prog*); 294 void addmove(Reg*, int, int, int); 295 Bits mkvar(Adr*, int); 296 void prop(Reg*, Bits, Bits); 297 void loopit(Reg*, long); 298 void synch(Reg*, Bits); 299 ulong allreg(ulong, Rgn*); 300 void paint1(Reg*, int); 301 ulong paint2(Reg*, int); 302 void paint3(Reg*, int, long, int); 303 void addreg(Adr*, int); 304 305 /* 306 * peep.c 307 */ 308 void peep(void); 309 void excise(Reg*); 310 Reg* uniqp(Reg*); 311 Reg* uniqs(Reg*); 312 int regtyp(Adr*); 313 int regzer(Adr*); 314 int anyvar(Adr*); 315 int subprop(Reg*); 316 int copyprop(Reg*); 317 int copy1(Adr*, Adr*, Reg*, int); 318 int copyu(Prog*, Adr*, Adr*); 319 320 int copyas(Adr*, Adr*); 321 int copyau(Adr*, Adr*); 322 int copyau1(Prog*, Adr*); 323 int copysub(Adr*, Adr*, Adr*, int); 324 int copysub1(Prog*, Adr*, Adr*, int); 325 326 long RtoB(int); 327 long FtoB(int); 328 int BtoR(long); 329 int BtoF(long); 330 331 #pragma varargck type "A" int 332 #pragma varargck type "B" Bits 333 #pragma varargck type "D" Adr* 334 #pragma varargck type "N" Adr* 335 #pragma varargck type "P" Prog* 336 #pragma varargck type "S" char* 337