Mercurial > hg > CbC > old > device
annotate mc-code-ia32.c @ 310:5ae5857ded2c struct-partial-init
struct partial init done.
| author | kono |
|---|---|
| date | Fri, 11 Jun 2004 01:21:35 +0900 |
| parents | a86612cf1a19 |
| children | f73b93de216a |
| rev | line source |
|---|---|
| 61 | 1 /* Micro-C Code Generatation Part for intel386 */ |
| 2 /* $Id$ */ | |
| 3 | |
| 4 #define EXTERN extern | |
| 5 #include "mc.h" | |
| 6 #include "mc-codegen.h" | |
| 93 | 7 #include "mc-code.h" |
| 61 | 8 |
| 173 | 9 char *l_include_path[] = { |
| 10 "/usr/include/", | |
| 182 | 11 "/usr/include/linux/", |
| 225 | 12 "/usr/include/diet/", |
| 13 "/usr/lib/gcc-lib/i386-linux/2.95.4/include/", | |
| 183 | 14 "/usr/lib/gcc-lib/i386-redhat-linux/2.96/include/", |
| 246 | 15 "/usr/lib/dietlibc/include/", |
| 173 | 16 0 |
| 17 }; | |
| 18 | |
| 19 | |
| 245 | 20 #define SIZE_OF_INT 4 |
| 21 #define SIZE_OF_SHORT 2 | |
| 22 #define SIZE_OF_FLOAT 4 | |
| 23 #define SIZE_OF_DOUBLE 8 | |
| 24 #define SIZE_OF_LONGLONG 8 | |
| 25 #define ENDIAN 0 | |
| 26 | |
| 254 | 27 int size_of_int = SIZE_OF_INT; |
| 28 int size_of_short = SIZE_OF_SHORT; | |
| 29 int size_of_float = SIZE_OF_FLOAT; | |
| 30 int size_of_double = SIZE_OF_DOUBLE; | |
| 31 int size_of_longlong = SIZE_OF_LONGLONG; | |
| 32 int endian = ENDIAN; | |
| 245 | 33 |
| 94 | 34 #define SAVE_STACKS 1 |
| 35 | |
| 61 | 36 #define TEXT_EMIT_MODE 0 |
| 37 #define DATA_EMIT_MODE 1 | |
| 38 #define RODATA_EMIT_MODE 2 | |
| 39 | |
| 40 static int output_mode = TEXT_EMIT_MODE; | |
| 41 static int data_alignment = 0; | |
| 42 | |
| 224 | 43 static int creg; |
| 239 | 44 static int lreg; |
| 224 | 45 |
| 238 | 46 int code_lassop_p = 0; |
| 47 | |
| 239 | 48 static int MAX_REGISTER=6; /* intel386のレジスタを6つまで使う*/ |
| 119 | 49 #define REAL_MAX_REGISTER 8 /* intel386のレジスタが8つということ*/ |
| 239 | 50 static int MAX_DATA_REG=4; |
| 51 static int MAX_POINTER=3; | |
| 52 // static int MAX_REGISTGER_VAR=2; | |
| 53 // static int MAX_FREGISTER=1; | |
| 119 | 54 |
| 55 #define MAX_FPU_STACK 7 | |
| 239 | 56 #define REG_VAR 3 |
| 119 | 57 |
| 239 | 58 // static int MAX_INPUT_REGISTER_VAR = 0; |
| 59 static int MAX_CODE_INPUT_REGISTER_VAR = 2; | |
| 60 // static int MAX_INPUT_DREGISTER_VAR = 0; | |
| 61 // static int MAX_INPUT_FREGISTER_VAR = 0; | |
| 62 // static int MAX_CODE_INPUT_DREGISTER_VAR = 0; | |
| 61 | 63 |
| 239 | 64 static int reg_sp; /* REGister Stack-Pointer */ |
| 65 static int reg_stack[MAX_MAX]; /* 実際のレジスタの領域 */ | |
| 138 | 66 |
| 67 /* floating point registers */ | |
| 68 | |
| 239 | 69 static int freg_sp; /* floating point REGister Stack-Pointer */ |
| 70 static int freg_stack[MAX_MAX]; /* 実際のレジスタの領域 */ | |
| 71 | |
| 72 static int reg_var; | |
| 73 static int regvar[2]; | |
| 138 | 74 |
| 75 | |
| 61 | 76 /* |
| 128 | 77 -28 -8 local2 |
| 78 -24 -4 local1 | |
| 79 -20 8 arg3 | |
| 80 -16 4 arg2 | |
| 81 -12 0 arg1 | |
| 82 local2 -20 4 -8 (%edi) | |
| 83 local1 <-- -16 0 local variable -4 (%esi) | |
| 61 | 84 %edi -12 <- disp_offset %ebp |
| 85 %esi -8 | |
| 86 %ebx -4 | |
| 87 %ebp = %esp 0 | |
| 88 %eip 4 <- arg_offset | |
| 89 arg1 8 0 | |
| 90 arg2 12 4 | |
| 91 see enter/enter1/leave see code_enter | |
| 92 */ | |
| 244 | 93 // static int arg_offset = 8; |
| 94 // static int disp_offset = -12; | |
| 95 #define func_disp_offset -12 | |
| 96 #define code_disp_offset 0 | |
| 239 | 97 // static int jump_offset = 0; |
| 61 | 98 |
| 119 | 99 static int code_disp_label; |
| 100 static int func_disp_label; | |
| 61 | 101 |
| 263 | 102 |
| 119 | 103 static int |
| 104 lvar(int l) | |
| 105 { | |
| 106 if (is_code(fnptr)) { | |
| 107 return l+code_disp_offset; | |
| 108 } else if (l<0) { | |
| 109 return l+disp_offset; | |
| 110 } else { | |
| 111 return l+arg_offset; | |
| 112 } | |
| 113 } | |
| 99 | 114 |
| 95 | 115 /* |
| 116 creg currrent virtual register | |
| 117 dreg spare virtual register | |
| 118 | |
| 119 rname[creg] currrent real register | |
| 120 rname[dreg] spare real register | |
| 121 | |
| 122 regs[] virtual register usage | |
| 123 regv[] value in virtual register flag | |
| 124 | |
| 125 reg_name[rname[creg]] | |
| 126 | |
| 127 freg current floating point register | |
| 128 fregv calue in floating point register | |
| 129 */ | |
| 130 | |
| 131 static int dreg; /* general temporal register */ | |
| 132 | |
| 239 | 133 #define REAL_MAX_LREGISTER 2 |
| 238 | 134 static int ia32regs[REAL_MAX_REGISTER+REAL_MAX_LREGISTER]; |
| 135 static int ia32regv[REAL_MAX_REGISTER+REAL_MAX_LREGISTER]; | |
| 136 static int ia32rname[REAL_MAX_REGISTER+REAL_MAX_LREGISTER]; | |
| 95 | 137 |
| 205 | 138 static int *regv = ia32regv; |
| 139 static int *regs = ia32regs; | |
| 95 | 140 static int *rname = ia32rname; |
| 141 | |
| 205 | 142 static int ia32fregs[1]; |
| 143 static int ia32fregv[1]; | |
| 95 | 144 |
| 205 | 145 static int freg; |
| 146 static int *fregv = ia32fregv; | |
| 147 static int *fregs = ia32fregs; | |
| 95 | 148 |
| 61 | 149 |
| 150 #define REG_EAX 0 | |
| 151 #define REG_EBX 1 | |
| 152 #define REG_ECX 2 | |
| 153 #define REG_EDX 3 | |
| 154 #define REG_ESI 4 | |
| 155 #define REG_EDI 5 | |
| 156 #define REG_EBP 6 | |
| 157 #define REG_ESP 7 | |
| 239 | 158 #define is_int_reg(reg) (reg<REG_EBP) |
| 159 #define REG_LCREG 8 | |
| 160 #define REG_L 9 | |
| 61 | 161 |
| 162 | |
| 163 #define DATA_REG 0 | |
| 164 #define POINTER_REG 3 | |
| 165 static char *reg_name[8]; | |
| 166 static char *reg_name_l[4]; | |
| 167 static char *reg_name_w[4]; | |
| 168 | |
| 93 | 169 static void use_register(int virt, int real, int move); |
| 170 static int virtual(int real); | |
| 235 | 171 static void shift(char *op, int reg,int creg); |
| 172 static void ld_indexx(int byte, int n, int xreg,int reg,int sign); | |
| 93 | 173 static void data_mode(char *name); |
| 263 | 174 static void text_mode(); |
| 237 | 175 static int edx_setup(int rreg); |
| 93 | 176 static void edx_cleanup(); |
| 177 static void local_table(void); | |
| 195 | 178 #if FLOAT_CODE |
| 93 | 179 static char * fload(int d); |
| 180 static int code_d1(double d); | |
| 181 static int code_d2(double d); | |
| 195 | 182 static void code_save_fstacks(); |
| 183 #endif | |
| 94 | 184 static void code_save_stacks(); |
| 287 | 185 static void jcond(int l, char cond); |
| 82 | 186 |
| 235 | 187 #define use_int(reg) if (reg==-1) reg=use_int0() |
| 242 | 188 static int use_int0() { lreg = 0; if (!is_int_reg(creg)) { creg = virtual(REG_EBX); regs[creg]=1;} return creg; } |
| 239 | 189 |
| 190 #define use_longlong(reg) reg=use_longlong0(reg) | |
| 191 static int | |
| 192 use_longlong0(int reg) | |
| 193 { | |
| 194 int i; | |
| 195 if (reg==USE_CREG) | |
| 196 reg = REG_LCREG; | |
| 197 if (!lreg) { | |
| 198 code_save_stacks(); | |
| 199 // make edx,eax free | |
| 240 | 200 use_register(creg,REG_EBX,regv[creg]); |
| 201 use_register(dreg,REG_ECX,regv[dreg]); | |
| 239 | 202 for(i=0;i<reg_var;i++) |
| 203 use_register(regvar[i],REG_ESI+i,1); | |
| 204 } | |
| 240 | 205 creg = lreg = reg; |
| 239 | 206 return lreg; |
| 207 } | |
| 208 | |
| 209 char * | |
| 210 l_edx(int i) { | |
| 211 return i==REG_L?"%edi":"%edx"; | |
| 212 } | |
| 213 char * | |
| 214 l_eax(int i) { | |
| 215 return i==REG_L?"%esi":"%eax"; | |
| 216 } | |
| 217 | |
| 307 | 218 char *init_src = "\ |
| 219 #define va_list int\n\ | |
| 220 #define va_start(ap,arg) ap=(((int)(&arg))+sizeof(arg))\n\ | |
| 221 #define va_arg(ap,type) (*((type *)ap)++)\n\ | |
| 222 #define va_end\n\ | |
| 223 #define __i386__ 1\n\ | |
| 224 #define __LITTLE_ENDIAN__ 1\n\ | |
| 225 #define __STDC__ 1\n\ | |
| 226 #define size_t int\n\ | |
| 227 #define __externsion__\n\ | |
| 228 #define __flexarr\n\ | |
| 229 #define wchar_t int\n\ | |
| 230 "; | |
| 235 | 231 |
| 61 | 232 void |
| 233 code_init(void) | |
| 234 { | |
| 173 | 235 |
| 61 | 236 arg_offset = 8; |
| 244 | 237 // func_disp_offset = -12; |
| 61 | 238 disp_offset = -12; |
| 239 MAX_REGISTER=6; | |
| 240 MAX_DATA_REG=4; | |
| 241 MAX_POINTER=3; | |
| 242 MAX_REGISTER_VAR=2; | |
| 243 | |
| 244 reg_name[REG_EAX] = "%eax"; | |
| 245 reg_name[REG_EBX] = "%ebx"; | |
| 246 reg_name[REG_ECX] = "%ecx"; | |
| 247 reg_name[REG_EDX] = "%edx"; | |
| 248 reg_name[REG_ESI] = "%esi"; | |
| 249 reg_name[REG_EDI] = "%edi"; | |
| 250 reg_name[REG_EBP] = "%ebp"; | |
| 251 reg_name[REG_ESP] = "%esp"; | |
| 252 reg_name_l[REG_EAX] = "%al"; | |
| 253 reg_name_l[REG_EBX] = "%bl"; | |
| 254 reg_name_l[REG_ECX] = "%cl"; | |
| 255 reg_name_l[REG_EDX] = "%dl"; | |
| 256 reg_name_w[REG_EAX] = "%ax"; | |
| 257 reg_name_w[REG_EBX] = "%bx"; | |
| 258 reg_name_w[REG_ECX] = "%cx"; | |
| 259 reg_name_w[REG_EDX] = "%dx"; | |
| 260 | |
| 261 } | |
| 262 | |
| 263 char * | |
| 264 register_name(int i,int byte) | |
| 265 { | |
| 266 if (i<0) { | |
| 267 error(REG_ERR); | |
| 268 return "%eax"; | |
| 269 } | |
| 165 | 270 if (byte==1 && rname[i] <= REG_EDX) { |
| 61 | 271 return reg_name_l[rname[i]]; |
| 245 | 272 } else if (byte==SIZE_OF_SHORT && rname[i] <= REG_EDX) { |
| 165 | 273 return reg_name_w[rname[i]]; |
| 61 | 274 } else { |
| 168 | 275 return reg_name[rname[i]]; /* 0 or 4 means int */ |
| 61 | 276 } |
| 277 } | |
| 278 | |
| 235 | 279 /* |
| 147 | 280 int use_int(int i) { return i;} |
| 281 int use_float(int i) { return i;} | |
| 282 int use_double(int i) { return i;} | |
| 195 | 283 int use_longlong(int i) { return i; } |
| 235 | 284 */ |
| 195 | 285 |
| 147 | 286 |
| 61 | 287 void |
| 288 gexpr_code_init(void){ | |
| 289 use_register(creg,REG_EAX,0); | |
| 94 | 290 regv[creg]=0; |
| 61 | 291 regv[dreg]=0; |
| 292 } | |
| 293 | |
| 147 | 294 void |
| 295 code_gexpr(int e){ | |
| 296 } | |
| 297 | |
| 89 | 298 int |
| 299 get_register(void) | |
| 300 { /* 使われていないレジスタを調べる */ | |
| 301 int i; | |
| 302 for(i=0;i<MAX_REGISTER;i++) { | |
| 303 if (! regs[i]) { /* 使われていないなら */ | |
| 304 regs[i]=1; /* そのレジスタを使うことを宣言し */ | |
| 305 return i; /* その場所を表す番号を返す */ | |
| 306 } | |
| 307 } | |
| 308 return -1; /* 空いている場所がないなら、それを表す -1 を返す */ | |
| 309 } | |
| 310 | |
| 311 void | |
| 312 free_register(int i) { /* いらなくなったレジスタを開放 */ | |
| 313 regv[i]=regs[i]=0; | |
| 238 | 314 if(i==REAL_MAX_REGISTER) { |
| 239 | 315 regv[virtual(REG_ESI)]=regv[virtual(REG_EDI)]=0; |
| 238 | 316 } |
| 89 | 317 } |
| 318 | |
| 99 | 319 int |
| 126 | 320 get_input_register_var(int i,NMTBL *nptr,int is_code) |
| 99 | 321 { |
| 126 | 322 if (is_code) { |
| 323 if (i>=MAX_CODE_INPUT_REGISTER_VAR) return 0; | |
| 324 i = virtual(i+REG_ESI); | |
| 239 | 325 regs[i]=regv[i]=INPUT_REG; |
| 126 | 326 return list3(REGISTER,i,(int)nptr); |
| 327 } else { | |
| 328 return 0; | |
| 329 } | |
| 99 | 330 } |
| 103 | 331 |
| 99 | 332 int |
| 138 | 333 get_input_dregister_var(int i,NMTBL *nptr,int is_code,int d) |
| 99 | 334 { |
| 126 | 335 return 0; |
| 99 | 336 } |
| 337 | |
| 338 int | |
| 138 | 339 get_dregister(int d) |
| 99 | 340 { |
| 341 return -1; | |
| 342 } | |
| 343 | |
| 195 | 344 int |
| 345 get_lregister_var(NMTBL *n) | |
| 346 { | |
| 238 | 347 int h,l; |
| 348 h = virtual(REG_ESI); | |
| 349 l = virtual(REG_EDI); | |
| 350 if (regv[REAL_MAX_REGISTER]==0&®s[h]==0&®s[l]==0) { | |
| 239 | 351 regs[h]=regs[l]=REG_VAR; |
| 352 regv[h]=regv[l]=REG_VAR; | |
| 238 | 353 regv[REAL_MAX_REGISTER]=1; |
| 239 | 354 reg_var=2; regvar[0]=h; regvar[1]=l; |
| 240 | 355 return list2(LREGISTER,REG_L); |
| 238 | 356 } |
| 245 | 357 return list2(LVAR,new_lvar(SIZE_OF_LONGLONG)); |
| 195 | 358 } |
| 359 | |
| 205 | 360 int |
| 361 get_lregister() | |
| 362 { | |
| 363 return -1; | |
| 364 } | |
| 365 | |
| 366 | |
| 89 | 367 int |
| 368 register_full(void) | |
| 369 { | |
| 370 int i; | |
| 371 for(i=0;i<MAX_REGISTER;i++) { | |
| 372 if (! regs[i]) { | |
| 373 return 0; | |
| 374 } | |
| 375 } | |
| 376 return 1; | |
| 377 } | |
| 378 | |
| 379 int | |
| 137 | 380 free_register_count(int d) |
| 89 | 381 { |
| 382 int i,count; | |
| 383 count = 0; | |
| 384 for(i=0;i<MAX_REGISTER;i++) { | |
| 385 if (! regs[i] && ! regv[i]) count++; | |
| 386 } | |
| 137 | 387 return d?0:count; |
| 89 | 388 } |
| 389 | |
| 390 void | |
| 391 free_all_register(void) | |
| 392 { | |
| 393 int i; | |
| 243 | 394 for(i=0;i<MAX_REGISTER+REAL_MAX_LREGISTER;i++) { |
| 89 | 395 regs[i]=regv[i]=0; |
| 396 } | |
| 397 creg = get_register(); | |
| 398 dreg = get_register(); | |
| 239 | 399 reg_var = 0; |
| 89 | 400 return; |
| 401 } | |
| 402 | |
| 403 | |
| 404 void | |
| 405 register_usage(char *s) | |
| 406 { | |
| 407 int i; | |
| 408 if (chk) return; | |
| 409 printf("# %d: %s:",lineno,s); | |
| 410 printf(" creg=%s dreg=%s ",register_name(creg,0),register_name(dreg,0)); | |
| 411 for(i=0;i<MAX_REGISTER;i++) { | |
| 412 printf("%d",regs[i]); | |
| 413 } | |
| 414 printf(":"); | |
| 415 for(i=0;i<MAX_REGISTER;i++) { | |
| 416 printf("%d",regv[i]); | |
| 417 } | |
| 418 #if 0 | |
| 419 printf(" regs_stack",register_name(creg,0),register_name(dreg,0)); | |
| 420 for(i=reg_sp;i>=0;i--) { | |
| 421 if(reg_stack[i]>=0) | |
| 422 printf(" %s",register_name(reg_stack[i],0)); | |
| 423 } | |
| 424 #endif | |
| 94 | 425 printf(" f:%d",freg_sp); |
| 89 | 426 printf("\n"); |
| 427 } | |
| 428 | |
| 109 | 429 void |
| 137 | 430 code_arg_register(NMTBL *fnptr) |
| 109 | 431 { |
| 137 | 432 int args = fnptr->dsp; |
| 433 NMTBL *n; | |
| 434 int reg_var = 0; | |
| 435 int freg_var = 0; | |
| 436 int type; | |
| 437 int reg; | |
| 438 int is_code0 = is_code(fnptr); | |
| 439 | |
| 440 while (args) { | |
| 441 /* process in reverse order */ | |
| 442 n = (NMTBL*)caddr(args); | |
| 443 type = n->ty; | |
| 444 if (scalar(type)) { | |
| 445 if ((reg = get_input_register_var(reg_var,n,is_code0))) { | |
| 446 n->sc = REGISTER; | |
| 447 n->dsp = cadr(reg); | |
| 448 regv[n->dsp]= 1; | |
| 449 regs[n->dsp]= INPUT_REG; | |
| 450 reg_var++; | |
| 245 | 451 cadddr(args)=SIZE_OF_INT; /* why we need this? */ |
| 137 | 452 } |
| 453 } else if (type==FLOAT||type==DOUBLE) { | |
| 138 | 454 if ((reg = get_input_dregister_var(freg_var,n,is_code0,1))) { |
| 137 | 455 n->sc = DREGISTER; |
| 456 n->dsp = cadr(reg); | |
| 457 fregv[n->dsp]= 1; | |
| 458 fregs[n->dsp]= INPUT_REG; | |
| 459 freg_var++; | |
| 460 cadddr(args)=size(type); /* why we need this? */ | |
| 461 } | |
| 462 } | |
| 463 args = cadr(args); | |
| 464 } | |
| 109 | 465 } |
| 466 | |
| 89 | 467 void |
| 468 gexpr_init(void) | |
| 469 { | |
| 292 | 470 if (reg_sp>0) error(-1); |
| 471 if (freg_sp>0) error(-1); | |
| 472 reg_sp = 0; | |
| 94 | 473 freg_sp = 0; |
| 89 | 474 text_mode(); |
| 475 gexpr_code_init(); | |
| 476 register_usage("gexpr_init"); | |
| 477 } | |
| 478 | |
| 479 | |
| 480 void | |
| 481 emit_init(void) | |
| 482 { | |
| 483 int i; | |
| 484 for(i=0;i<MAX_REGISTER;i++) { regs[i]=0; regv[i]=0;rname[i]=i;} | |
| 485 free_all_register(); | |
| 486 reg_sp = 0; | |
| 94 | 487 freg_sp = 0; |
| 89 | 488 text_mode(); |
| 489 } | |
| 490 | |
| 491 int | |
| 492 virtual(int real) | |
| 493 { | |
| 494 int real_v,i; | |
| 495 real_v = -1; | |
| 496 for(i=0;i<MAX_REGISTER;i++) { | |
| 497 if (rname[i]==real) { | |
| 498 real_v=i; | |
| 499 break; | |
| 500 } | |
| 501 } | |
| 502 return real_v; | |
| 503 } | |
| 504 | |
| 505 int | |
| 506 pop_register(void) | |
| 507 { /* レジスタから値を取り出す */ | |
| 508 return reg_stack[--reg_sp]; | |
| 509 } | |
| 510 | |
| 511 void | |
| 512 emit_pop_free(int xreg) | |
| 513 { | |
| 159 | 514 if (xreg==dreg||xreg==creg) { |
| 89 | 515 regv[dreg]=0; |
| 98 | 516 } else if (xreg>=0) { |
| 89 | 517 free_register(xreg); |
| 518 } | |
| 519 } | |
| 520 | |
| 521 | |
| 61 | 522 int |
| 105 | 523 get_register_var(NMTBL *nptr) |
| 61 | 524 { |
| 525 int i; | |
| 235 | 526 for(i=REG_ESI;i<REG_EBP;i++) { |
| 61 | 527 if (! regs[i]) { /* 使われていないなら */ |
| 239 | 528 regs[i]=REG_VAR; /* そのレジスタを使うことを宣言し */ |
| 61 | 529 regv[i]=0; |
| 239 | 530 regvar[reg_var++]=i; |
| 105 | 531 return list3(REGISTER,i,(int)nptr); /* その場所を表す番号を返す */ |
| 61 | 532 } |
| 533 } | |
| 245 | 534 return list2(LVAR,new_lvar(SIZE_OF_INT)); |
| 104 | 535 } |
| 536 | |
| 537 int | |
| 138 | 538 get_dregister_var(NMTBL *nptr,int d) |
| 104 | 539 { |
| 245 | 540 return list2(LVAR,new_lvar(d?SIZE_OF_DOUBLE:SIZE_OF_FLOAT)); |
| 137 | 541 } |
| 542 | |
| 61 | 543 void |
| 544 use_register(int virt, int real, int move) | |
| 545 { | |
| 546 int real_v; | |
| 547 char *move_op; | |
| 548 if (rname[virt]==real) | |
| 549 return; | |
| 550 real_v = virtual(real); | |
| 551 move_op = regs[real_v]?"\txchg %s,%s\n":"\tmovl %s,%s\n"; | |
| 552 if (move || (regv[real_v])) { | |
| 553 printf(move_op,reg_name[rname[virt]],reg_name[real]); | |
| 554 } | |
| 555 rname[real_v] = rname[virt]; | |
| 556 rname[virt] = real; | |
| 557 } | |
| 558 | |
| 559 void | |
| 560 use_pointer(int virt, int move) | |
| 561 { | |
| 562 int i; | |
| 563 if (rname[virt]>=POINTER_REG) | |
| 564 return; | |
| 565 for(i=POINTER_REG;i<MAX_REGISTER;i++) { | |
| 566 if (!regs[virtual(i)]) { | |
| 567 use_register(virt,i,move); | |
| 568 return; | |
| 569 } | |
| 570 } | |
| 571 /* we prefer EBX */ | |
| 572 use_register(virt,REG_EBX,move); | |
| 573 } | |
| 574 | |
| 575 void | |
| 576 use_data_reg(int virt, int move) | |
| 577 { | |
| 578 int i; | |
| 579 if (rname[virt]<MAX_DATA_REG) | |
| 580 return; | |
| 581 for(i=0;i<MAX_DATA_REG;i++) { | |
| 582 if (!regs[virtual(i)]) { | |
| 583 use_register(virt,i,move); | |
| 584 return; | |
| 585 } | |
| 586 } | |
| 587 /* we prefer EBX */ | |
| 588 use_register(virt,REG_EBX,move); | |
| 589 } | |
| 590 | |
| 591 | |
| 592 void | |
| 107 | 593 emit_push() |
| 61 | 594 { |
| 595 int new_reg; | |
| 596 new_reg = get_register(); | |
| 159 | 597 if (new_reg==creg) error(-1); |
| 61 | 598 if(new_reg<0) { /* もうレジスタがない */ |
| 83 | 599 if (reg_sp>=MAX_MAX) error(-1); |
| 61 | 600 reg_stack[reg_sp++] = -1; |
| 601 printf("\tpushl %s\n",register_name(creg,0)); | |
| 602 /* creg is used soon, don't regv[creg]=0 */ | |
| 603 } else { | |
| 604 reg_stack[reg_sp++] = creg; /* push するかわりにレジスタを使う */ | |
| 605 creg = new_reg; | |
| 606 regv[creg]=1; | |
| 607 } | |
| 608 } | |
| 609 | |
| 610 int | |
| 611 emit_pop(int type) | |
| 612 { | |
| 613 int xreg; | |
| 614 if ((xreg=pop_register())==-1) { | |
| 615 if (type==POINTER_REG) | |
| 616 use_pointer(dreg,0); | |
| 617 else if (type==DATA_REG) | |
| 618 use_data_reg(dreg,0); | |
| 619 if (regv[dreg]) { | |
| 620 printf("# emit_pop dreg conflict\n"); | |
| 94 | 621 error(-1); |
| 61 | 622 } |
| 623 printf("\tpopl %s\n",register_name(dreg,0)); | |
| 94 | 624 regv[dreg]=1; |
| 625 return dreg; | |
| 626 } else if (xreg<= -REG_LVAR_OFFSET) { | |
| 119 | 627 code_rlvar(xreg+REG_LVAR_OFFSET,dreg); |
| 117 | 628 free_lvar(xreg+REG_LVAR_OFFSET); |
| 94 | 629 regv[dreg]=1; |
| 630 return dreg; | |
| 631 } | |
| 61 | 632 return xreg; |
| 633 } | |
| 634 | |
| 186 | 635 int |
| 636 stack_top(int type) | |
| 637 { | |
| 638 int xreg; | |
| 639 if (type==INT) { | |
| 640 xreg = reg_stack[reg_sp]; | |
| 641 if (xreg<= -REG_LVAR_OFFSET) { | |
| 642 return list2(LVAR,REG_LVAR_OFFSET+xreg); | |
| 643 } else { | |
| 644 return list2(REGISTER,xreg); | |
| 645 } | |
| 646 } else { | |
| 647 xreg = freg_stack[freg_sp]; | |
| 648 if (xreg<= -REG_LVAR_OFFSET) { | |
| 649 return list2(LVAR,REG_LVAR_OFFSET+xreg); | |
| 187 | 650 } else { |
| 186 | 651 return list2(DREGISTER,xreg); |
| 652 } | |
| 653 } | |
| 654 return xreg; | |
| 655 } | |
| 656 | |
| 657 | |
| 658 | |
| 92 | 659 void |
| 660 code_label(int labelno) | |
| 661 { | |
| 662 printf("_%d:\n",labelno); | |
| 663 } | |
| 61 | 664 |
| 665 void | |
| 107 | 666 code_gvar(int e1,int creg) { |
| 235 | 667 use_int(creg); |
| 109 | 668 printf("\tmovl $%s,%s\n",((NMTBL*)cadr(e1))->nm,register_name(creg,0)); |
| 107 | 669 regv[creg]=1; |
| 61 | 670 } |
| 671 | |
| 672 | |
| 673 void | |
| 107 | 674 code_rgvar(int e1,int creg) { |
| 235 | 675 use_int(creg); |
| 109 | 676 printf("\tmovl %s,%s\n",((NMTBL*)cadr(e1))->nm,register_name(creg,0)); |
| 107 | 677 regv[creg]=1; |
| 61 | 678 } |
| 235 | 679 |
| 245 | 680 static char *cload(int sign,int sz) { return sz==1?(sign?"movsbl":"movzbl"):sz==SIZE_OF_SHORT?(sign?"movswl":"movzwl"):"movl"; } |
| 235 | 681 |
| 61 | 682 void |
| 165 | 683 code_crgvar(int e1,int creg,int sign,int sz){ |
| 235 | 684 use_int(creg); |
| 165 | 685 printf("\t%s %s,%s\n",cload(sign,sz), |
| 163 | 686 ((NMTBL*)cadr(e1))->nm,register_name(creg,0)); |
| 107 | 687 regv[creg]=1; |
| 61 | 688 } |
| 689 | |
| 690 | |
| 691 void | |
| 107 | 692 code_lvar(int e2,int creg) { |
| 235 | 693 use_int(creg); |
| 119 | 694 printf("\tlea %d(%%ebp),%s\n",lvar(e2),register_name(creg,0)); |
| 107 | 695 regv[creg]=1; |
| 61 | 696 } |
| 697 | |
| 698 | |
| 699 void | |
| 107 | 700 code_register(int e2,int creg) { |
| 235 | 701 use_int(creg); |
| 61 | 702 printf("\tmovl %s,%s\n",register_name(e2,0),register_name(creg,0)); |
| 107 | 703 regv[creg]=1; |
| 61 | 704 } |
| 705 | |
| 706 | |
| 707 void | |
| 94 | 708 code_rlvar(int e2,int reg) { |
| 235 | 709 use_int(reg); |
| 119 | 710 printf("\tmovl %d(%%ebp),%s\n",lvar(e2),register_name(reg,0)); |
| 107 | 711 regv[creg]=1; |
| 61 | 712 } |
| 713 | |
| 714 | |
| 715 void | |
| 165 | 716 code_crlvar(int e2,int reg,int sign,int sz) { |
| 235 | 717 use_int(reg); |
| 165 | 718 printf("\t%s %d(%%ebp),%s\n",cload(sign,sz),lvar(e2),register_name(reg,0)); |
| 107 | 719 regv[creg]=1; |
| 61 | 720 } |
| 721 | |
| 722 | |
| 723 void | |
| 109 | 724 code_fname(NMTBL *n,int creg) { |
| 235 | 725 use_int(creg); |
| 109 | 726 printf("\tmovl $%s,%s\n",n->nm,register_name(creg,0)); |
| 107 | 727 regv[creg]=1; |
| 61 | 728 } |
| 729 | |
| 730 | |
| 731 void | |
| 107 | 732 code_const(int e2,int creg) { |
| 235 | 733 use_int(creg); |
| 61 | 734 printf("\tmovl $%d,%s\n",e2,register_name(creg,0)); |
| 107 | 735 regv[creg]=1; |
| 61 | 736 } |
| 737 | |
| 738 | |
| 739 void | |
| 107 | 740 code_neg(int creg) { |
| 235 | 741 use_int(creg); |
| 61 | 742 printf("\tnegl %s\n", register_name(creg,0)); |
| 743 } | |
| 744 | |
| 745 | |
| 746 void | |
| 107 | 747 code_not(int creg) { |
| 235 | 748 use_int(creg); |
| 61 | 749 printf("\tnotl %s\n", register_name(creg,0)); |
| 750 } | |
| 751 | |
| 752 | |
| 753 void | |
| 107 | 754 code_lnot(int creg) { |
| 61 | 755 char *xrn; |
| 235 | 756 use_int(creg); |
| 61 | 757 use_data_reg(creg,1); |
| 758 xrn = register_name(creg,1); | |
| 759 printf("\tcmpl $0,%s\n", register_name(creg,0)); | |
| 760 printf("\tsete %s\n", xrn); | |
| 761 printf("\tmovzbl %s,%s\n", xrn,register_name(creg,0)); | |
| 762 } | |
| 763 | |
| 764 void | |
| 168 | 765 code_preinc(int e1,int e2,int dir,int sign,int sz,int reg) { |
| 61 | 766 char *xrn; |
| 767 if (car(e2)==REGISTER) { | |
| 235 | 768 use_int(reg); |
| 168 | 769 printf("\taddl $%d,%s\n",dir,register_name(cadr(e2),0)); |
| 107 | 770 printf("\tmovl %s,%s\n",register_name(cadr(e2),0),register_name(reg,0)); |
| 771 regv[reg]=1; | |
| 61 | 772 return; |
| 773 } | |
| 774 g_expr(e2); | |
| 775 xrn = register_name(creg,0); | |
| 235 | 776 use_int(reg); |
| 245 | 777 printf("\t%s $%d,(%s)\n",(sz==1)?"addb":(sz==SIZE_OF_SHORT)?"addw":"addl",dir,xrn); |
| 235 | 778 printf("\t%s (%s),%s\n",cload(sign,sz),xrn,register_name(reg,0)); |
| 61 | 779 } |
| 780 | |
| 781 | |
| 782 void | |
| 168 | 783 code_postinc(int e1,int e2,int dir,int sign,int sz,int reg) { |
| 61 | 784 char *xrn; |
| 785 if (car(e2)==REGISTER) { | |
| 235 | 786 use_int(reg); |
| 107 | 787 printf("\tmovl %s,%s\n",register_name(cadr(e2),0),register_name(reg,0)); |
| 168 | 788 printf("\taddl $%d,%s\n",dir,register_name(cadr(e2),0)); |
| 107 | 789 regv[reg]=1; |
| 61 | 790 return; |
| 791 } | |
| 792 g_expr(e2); | |
| 793 emit_push(); | |
| 794 xrn = register_name((e2=emit_pop(0)),0); | |
| 235 | 795 use_int(reg); |
| 796 printf("\t%s (%s),%s\n",cload(sign,sz),xrn,register_name(reg,0)); | |
| 245 | 797 printf("\t%s $%d,(%s)\n",(sz==1)?"addb":(sz==SIZE_OF_SHORT)?"addw":"addl",dir,xrn); |
| 61 | 798 emit_pop_free(e2); |
| 799 } | |
| 800 | |
| 801 | |
| 802 | |
| 803 void | |
| 107 | 804 code_return(int creg) { |
| 235 | 805 use_int(creg); |
| 61 | 806 printf("\tleal _%d,%s\n",retcont,register_name(creg,0)); |
| 107 | 807 regv[creg]=1; |
| 61 | 808 } |
| 809 | |
| 810 | |
| 811 void | |
| 107 | 812 code_environment(int creg) { |
| 235 | 813 use_int(creg); |
| 61 | 814 printf("\tmovl %%ebp,%s\n",register_name(creg,0)); |
| 107 | 815 regv[creg]=1; |
| 61 | 816 } |
| 817 | |
| 291 | 818 static int rexpr_bool(int e1,int reg); |
| 819 static int drexpr_bool(int e1,int reg); | |
| 61 | 820 |
| 821 void | |
| 225 | 822 code_bool(int e1,int reg) { |
| 61 | 823 char *xrn; |
| 824 int e2,e3; | |
| 291 | 825 if (rexpr_bool(e1,reg)) return; |
| 826 #if FLOAT_CODE | |
| 827 if (drexpr_bool(e1,reg)) return; | |
| 828 #endif | |
| 61 | 829 b_expr(e1,1,e2=fwdlabel(),1); /* including > < ... */ |
| 289 | 830 if (use) { |
| 831 use_int(reg); | |
| 832 xrn = register_name(reg,0); | |
| 833 printf("\txorl %s,%s\n",xrn,xrn); | |
| 834 jmp(e3=fwdlabel()); | |
| 835 fwddef(e2); | |
| 836 printf("\tmovl $1,%s\n",xrn); | |
| 837 fwddef(e3); | |
| 838 regv[reg]=1; | |
| 839 } else { | |
| 840 fwddef(e2); | |
| 841 } | |
| 61 | 842 } |
| 843 | |
| 844 char * | |
| 845 code_gt(int cond) { | |
| 846 return (cond?"g":"le"); | |
| 847 } | |
| 848 | |
| 849 char * | |
| 850 code_ugt(int cond) { | |
| 851 return (cond?"a":"be"); | |
| 852 } | |
| 853 | |
| 854 char * | |
| 855 code_ge(int cond) { | |
| 856 return (cond?"ge":"l"); | |
| 857 } | |
| 858 | |
| 859 char * | |
| 860 code_uge(int cond) { | |
| 861 return (cond?"ae":"b"); | |
| 862 } | |
| 863 | |
| 864 char * | |
| 865 code_eq(int cond) { | |
| 866 return (cond?"e":"ne"); | |
| 867 } | |
| 868 | |
| 869 void | |
| 287 | 870 code_cmp_crgvar(int e1,int reg,int sz,int label,int cond) { |
| 235 | 871 use_int(reg); |
| 167 | 872 if (sz==1) |
| 873 printf("\tcmpb $0,%s\n",((NMTBL*)cadr(e1))->nm); | |
| 245 | 874 else if (sz==SIZE_OF_SHORT) |
| 167 | 875 printf("\tcmpw $0,%s\n",((NMTBL*)cadr(e1))->nm); |
| 287 | 876 jcond(label,cond); |
| 61 | 877 } |
| 878 | |
| 879 | |
| 880 void | |
| 287 | 881 code_cmp_crlvar(int e1,int reg,int sz,int label,int cond) { |
| 235 | 882 use_int(reg); |
| 167 | 883 if (sz==1) |
| 884 printf("\tcmpb $0,%d(%%ebp)\n",lvar(e1)); | |
| 245 | 885 else if (sz==SIZE_OF_SHORT) |
| 167 | 886 printf("\tcmpw $0,%d(%%ebp)\n",lvar(e1)); |
| 287 | 887 jcond(label,cond); |
| 61 | 888 } |
| 889 | |
| 890 | |
| 891 void | |
| 287 | 892 code_cmp_rgvar(int e1,int reg,int label,int cond) { |
| 235 | 893 use_int(reg); |
| 109 | 894 printf("\tcmpl $0,%s\n",((NMTBL*)cadr(e1))->nm); |
| 287 | 895 jcond(label,cond); |
| 61 | 896 } |
| 897 | |
| 898 | |
| 899 void | |
| 287 | 900 code_cmp_rlvar(int e1,int reg,int label,int cond) { |
| 235 | 901 use_int(reg); |
| 119 | 902 printf("\tcmpl $0,%d(%%ebp)\n",lvar(e1)); |
| 287 | 903 jcond(label,cond); |
| 61 | 904 } |
| 905 | |
| 906 | |
| 907 void | |
| 287 | 908 code_cmp_register(int e2,int label,int cond) { |
| 235 | 909 use_int(e2); |
| 61 | 910 printf("\tcmpl $0,%s\n",register_name(e2,0)); |
| 287 | 911 jcond(label,cond); |
| 61 | 912 } |
| 913 | |
| 914 | |
| 915 void | |
| 916 ascii(char *s) | |
| 917 { | |
| 918 printf("\t.string \""); | |
| 919 while(*s) { | |
| 920 if (*s=='\n') | |
| 921 printf("%cn",92); | |
| 922 else if (*s<' ') | |
| 923 printf("%c%03o",92,*s); | |
| 924 else if (*s==34) | |
| 925 printf("%c%c",92,34); | |
| 926 else | |
| 927 printf("%c",*s); | |
| 928 s++; | |
| 929 } | |
| 930 printf("%c\n",34); | |
| 931 } | |
| 932 | |
| 933 void | |
| 107 | 934 code_string(int e1,int creg) |
| 61 | 935 { |
| 936 char *s; | |
| 937 int i,lb; | |
| 938 | |
| 235 | 939 use_int(creg); |
| 61 | 940 if (0) { |
| 941 s=(char *)cadr(e1); | |
| 942 lb=fwdlabel(); | |
| 943 printf("\tjmp _%d\n",lb); | |
| 944 i=backdef(); | |
| 945 ascii(s); | |
| 946 printf("\t.align 2\n"); | |
| 947 fwddef(lb); | |
| 948 printf("\tlea _%d,%s\n",i,register_name(creg,0)); | |
| 949 } else { | |
| 950 s=(char *)cadr(e1); | |
| 951 printf(".section\t.rodata\n"); | |
| 952 lb=fwdlabel(); | |
| 953 printf("_%d:\n",lb); | |
| 954 ascii(s); | |
| 955 if (output_mode==TEXT_EMIT_MODE) { | |
| 956 printf(".text\n"); | |
| 957 } else { | |
| 958 text_mode(); | |
| 959 } | |
| 960 printf("\tlea _%d,%s\n",lb,register_name(creg,0)); | |
| 961 } | |
| 962 } | |
| 963 | |
| 964 #define MAX_COPY_LEN 20 | |
| 965 | |
| 966 void | |
| 967 emit_copy(int from,int to,int length,int offset,int value,int det) | |
| 968 { | |
| 969 int fix = 0; | |
| 970 /* length <0 means upward direction copy */ | |
| 235 | 971 use_int(from); |
| 972 use_int(to); | |
| 61 | 973 switch (length) { |
| 974 case 0: break; | |
| 975 case 1: case -1: | |
| 976 printf("\tmovb %d(%s),%s\n",offset, | |
| 977 register_name(from,0), reg_name_l[rname[dreg]] ); | |
| 978 printf("\tmovb %s,%d(%s)\n",reg_name_l[rname[dreg]] ,offset, | |
| 979 register_name(to,0)); | |
| 980 break; | |
| 981 case 2: case -2: | |
| 982 printf("\tmovw %d(%s),%s\n",offset, | |
| 983 register_name(from,0), reg_name_w[rname[dreg]] ); | |
| 984 printf("\tmovw %s,%d(%s)\n",reg_name_w[rname[dreg]] ,offset, | |
| 985 register_name(to,0)); | |
| 986 break; | |
| 987 case 4: case -4: | |
| 988 printf("\tmovl %d(%s),%s\n",offset, | |
| 989 register_name(from,0), register_name(dreg,0)); | |
| 990 printf("\tmovl %s,%d(%s)\n",register_name(dreg,0), offset, | |
| 991 register_name(to,0)); | |
| 992 break; | |
| 993 default: | |
|
258
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Complex function argments. Struct is done. Long long is odd.
kono
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254
diff
changeset
|
994 if (length <0) { |
|
22949117768f
Complex function argments. Struct is done. Long long is odd.
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diff
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|
995 if (length > -MAX_COPY_LEN) { |
|
22949117768f
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diff
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|
996 for(;length<=-4;length+=4,offset-=4) |
|
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diff
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997 emit_copy(from,to,-4,offset-4,0,det); |
|
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diff
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998 for(;length<=-2;length+=2,offset-=2) |
|
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diff
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999 emit_copy(from,to,-2,offset-2,0,det); |
|
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1000 if(length<0) |
|
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diff
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1001 emit_copy(from,to,length,offset-1,0,det); |
|
22949117768f
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1002 break; |
|
22949117768f
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|
1003 } |
|
22949117768f
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diff
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|
1004 } else if (length <=MAX_COPY_LEN) { |
|
22949117768f
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diff
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1005 for(;length>=4;length-=4,offset+=4) |
|
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diff
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1006 emit_copy(from,to,4,offset,0,det); |
|
22949117768f
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diff
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1007 for(;length>=2;length-=2,offset+=2) |
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diff
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1008 emit_copy(from,to,2,offset,0,det); |
|
22949117768f
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diff
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1009 if(length>0) |
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22949117768f
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1010 emit_copy(from,to,length,offset,0,det); |
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1011 break; |
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1012 } |
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1013 /* |
| 61 | 1014 if (det) { |
| 1015 call bcopy | |
| 1016 g_expr(list3(FUNCTION,,); | |
| 1017 break; | |
|
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1018 } |
| 61 | 1019 */ |
| 1020 use_register(from,REG_ESI,1); | |
| 1021 use_register(to, REG_EDI,1); | |
| 1022 use_register(dreg,REG_ECX,0); | |
| 1023 if (length<0) { | |
| 1024 printf("\tmovl $%d,%%ecx\n",-length/4); | |
| 1025 printf("\taddl $%d,%%esi\n",-length); | |
| 1026 printf("\taddl $%d,%%edi\n",-length); | |
| 1027 printf("\tstd\n\trep\n\tmovsl\n"); | |
| 1028 if(length%4) { | |
|
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1029 emit_copy(from,to,length,offset+length/SIZE_OF_INT,0,det); |
| 61 | 1030 } |
| 1031 } else { | |
| 1032 printf("\tmovl $%d,%%ecx\n",length/4); | |
| 1033 fix = (length/4)*4; | |
| 1034 printf("\tcld\n\trep\n\tmovsl\n"); | |
| 1035 if(length%4) { | |
|
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1036 emit_copy(from,to,length,offset+length/SIZE_OF_INT,0,det); |
| 61 | 1037 } |
| 1038 } | |
| 1039 } | |
| 1040 if (value) { | |
| 1041 /* creg must point top of the destination data */ | |
| 1042 /* this code is necessary for the value of assignment or function call */ | |
| 1043 /* otherwise we don't need this */ | |
| 1044 if (fix) printf("\tsubl $%d,%s\n",fix,register_name(to,0)); | |
| 1045 if(creg!=to) { | |
| 1046 if (to==dreg) | |
| 1047 printf("\tmovl %s,%s\n",register_name(to,0),register_name(creg,0)); | |
| 1048 else { | |
| 1049 free_register(creg); creg=to; | |
| 1050 } | |
| 1051 } | |
| 1052 } | |
| 1053 regv[from]=regv[to]=regv[dreg]=0; | |
| 1054 regv[creg]=1; | |
| 1055 } | |
| 1056 | |
| 1057 int | |
| 1058 struct_push(int e4,int t) | |
| 1059 { | |
| 81 | 1060 int length,xreg,save,lreg,count; |
| 61 | 1061 g_expr(e4); |
| 1062 length=size(t); | |
| 245 | 1063 if(length%SIZE_OF_INT) { |
| 1064 length += SIZE_OF_INT - (length%SIZE_OF_INT); | |
| 61 | 1065 } |
| 245 | 1066 for(count=0;length<MAX_COPY_LEN;count++,length-=SIZE_OF_INT) { |
| 81 | 1067 if (length==0) return count; |
| 1068 else { | |
| 1069 printf("\tpushl %d(%s)\n", | |
| 245 | 1070 length-SIZE_OF_INT,register_name(creg,0)); |
| 81 | 1071 } |
| 61 | 1072 } |
| 1073 printf("\tsubl $%d,%%esp\n",length); | |
| 1074 if (register_full()) { | |
| 1075 save = 1; | |
| 1076 for(lreg=0;lreg==creg||lreg==dreg;lreg++); | |
| 1077 printf("\tpushl %s\n",register_name(lreg,0)); | |
| 1078 xreg = lreg; regv[xreg]=0; | |
| 1079 } else { | |
| 1080 save=0; | |
| 1081 xreg = get_register(); | |
| 1082 } | |
| 1083 if (save) | |
| 245 | 1084 printf("\tlea %d(%%esp),%s\n",SIZE_OF_INT,register_name(xreg,0)); |
| 61 | 1085 else |
| 1086 printf("\tmovl %%esp,%s\n",register_name(xreg,0)); | |
| 1087 regv[xreg]=1; | |
| 1088 /* downward direction copy */ | |
| 1089 emit_copy(creg,xreg,length,0,0,1); | |
| 1090 /* we have value in creg, it may be changed */ | |
| 1091 if (save) { | |
| 1092 if(creg==xreg) { | |
| 1093 creg = get_register(); /* creg is freed in emit_copy */ | |
| 1094 } | |
| 1095 printf("\tpopl %s\n",register_name(xreg,0)); | |
| 1096 regv[xreg]=1; | |
| 1097 } else | |
| 1098 free_register(xreg); | |
| 245 | 1099 return length/SIZE_OF_INT; |
| 61 | 1100 } |
| 1101 | |
| 94 | 1102 int |
| 61 | 1103 function(int e1) |
| 1104 { | |
| 127 | 1105 int e2,e3,e4,nargs,t,ret_type; |
| 1106 NMTBL *n=0; | |
| 61 | 1107 int save,saved; |
|
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1108 ret_type = cadr(cadddr(e1)); |
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1109 if (ret_type==CHAR) ret_type=INT; |
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|
1110 |
| 94 | 1111 #ifdef SAVE_STACKS |
| 1112 code_save_stacks(); | |
| 237 | 1113 #if FLOAT_CODE |
| 1114 code_save_fstacks(); | |
| 1115 #endif | |
| 94 | 1116 #endif |
| 137 | 1117 if (free_register_count(0)<1) { |
| 61 | 1118 for(save = 0;save==dreg||save==creg;save++); |
| 1119 printf("\tpushl %s\n",register_name(save,0)); | |
| 1120 saved = 1; | |
| 1121 } else { | |
| 1122 save = get_register(); | |
| 1123 saved = 0; | |
| 1124 } | |
| 1125 regv[save]=0; | |
| 1126 e2 = cadr(e1); | |
| 1127 nargs = 0; | |
| 1128 for (e3 = caddr(e1); e3; e3 = cadr(e3)) { | |
| 1129 t=caddr(e3); | |
| 127 | 1130 e4 = car(e3); |
| 61 | 1131 if(scalar(t)) { |
| 240 | 1132 if (car(e4)==REGISTER) { |
| 1133 printf("\tpushl %s\n",register_name(cadr(e4),0)); | |
| 1134 } else { | |
| 1135 g_expr(e4); | |
| 1136 printf("\tpushl %s\n",register_name(creg,0)); | |
| 1137 } | |
| 237 | 1138 } else if (t==LONGLONG||t==ULONGLONG) { |
| 240 | 1139 if (car(e4)==LREGISTER) { |
| 1140 printf("\tpushl %s\n\tpushl %s\n",l_edx(cadr(e4)),l_eax(cadr(e4))); | |
| 1141 } else { | |
| 1142 g_expr(e4); | |
| 1143 printf("\tpushl %%edx\n\tpushl %%eax\n"); | |
| 1144 } | |
| 241 | 1145 ++nargs; |
| 82 | 1146 } else if (t==DOUBLE) { |
| 1147 g_expr(e4); | |
| 1148 printf("\tleal\t-8(%%esp),%%esp\n\tfstpl\t(%%esp)\n"); | |
| 245 | 1149 nargs += SIZE_OF_DOUBLE/SIZE_OF_INT; |
| 83 | 1150 fregv[freg]=0; |
| 82 | 1151 continue; |
| 1152 } else if (t==FLOAT) { | |
| 1153 g_expr(e4); | |
| 1154 printf("\tleal\t-4(%%esp),%%esp\n\tfstps\t(%%esp)\n"); | |
| 245 | 1155 nargs += SIZE_OF_FLOAT/SIZE_OF_INT; |
| 83 | 1156 fregv[freg]=0; |
| 82 | 1157 continue; |
| 61 | 1158 } else if (car(t)==STRUCT||car(t)==UNION) { |
| 1159 nargs += struct_push(e4,t); | |
| 1160 continue; | |
| 1161 } else { | |
| 1162 error(TYERR); | |
| 1163 } | |
| 1164 ++nargs; | |
| 1165 } | |
| 1166 if (car(e2) == FNAME) { | |
| 1167 n=(NMTBL *)cadr(e2); | |
| 78 | 1168 regv[creg]=0; |
| 1169 use_register(creg,REG_EAX,0); /* will be destroyed */ | |
| 61 | 1170 } else { |
| 1171 g_expr(e2); | |
| 78 | 1172 regv[creg]=1; |
| 1173 use_register(creg,REG_EAX,1); /* will be destroyed */ | |
| 61 | 1174 } |
| 1175 | |
| 1176 /* we don't have to save creg nor dreg */ | |
| 1177 regs[creg]=0; regs[dreg]=0; | |
| 78 | 1178 regv[dreg]= regv[save]= 0; |
| 239 | 1179 use_register(dreg,REG_EBX,0); /* will be destroyed */ |
| 61 | 1180 use_register(save,REG_ECX,0); /* will be destroyed */ |
| 1181 regs[creg]=1; regs[dreg]=1; | |
| 1182 | |
| 1183 if (car(e2) == FNAME) { | |
| 1184 printf("\tcall\t%s\n",n->nm); | |
| 1185 } else { | |
| 1186 printf("\tcall\t*%s\n",register_name(creg,0)); | |
| 1187 } | |
| 245 | 1188 if (nargs) printf("\taddl $%d,%%esp\n",SIZE_OF_INT*nargs); |
| 61 | 1189 if (saved) { |
| 1190 printf("\tpopl %s\n",register_name(save,0)); | |
| 1191 } else { | |
| 1192 free_register(save); | |
| 1193 } | |
| 1194 regv[save]=0; | |
| 105 | 1195 if (ret_type==DOUBLE||ret_type==FLOAT) { |
| 239 | 1196 } else if (ret_type==LONGLONG||ret_type==ULONGLONG) { |
| 243 | 1197 use_longlong0(USE_CREG); |
| 1198 regv[creg]=1; | |
| 105 | 1199 } else if (ret_type==VOID) { |
| 243 | 1200 regv[freg]=0; regv[creg]=0; |
| 94 | 1201 } else { |
| 243 | 1202 use_register(creg,REG_EAX,0); |
| 94 | 1203 fregv[freg]=0; regv[creg]=1; |
| 1204 } | |
| 105 | 1205 return ret_type; |
| 61 | 1206 } |
| 1207 | |
| 1208 void | |
| 1209 code_frame_pointer(int e3) { | |
| 235 | 1210 use_int(e3); |
| 61 | 1211 printf("\tmovl %s,%%ebp\n",register_name(e3,0)); |
| 1212 } | |
| 1213 | |
| 1214 | |
| 1215 void | |
| 62 | 1216 code_fix_frame_pointer(int disp_offset) { |
| 61 | 1217 printf("\tlea %d(%%ebp),%%ebp\n",disp_offset); |
| 1218 } | |
| 1219 | |
| 1220 | |
| 1221 void | |
| 1222 code_jmp(char *s) { | |
| 1223 printf("\tjmp %s\n",s); | |
| 1224 } | |
| 1225 | |
| 1226 | |
| 1227 void | |
| 1228 code_indirect_jmp(int e2) { | |
| 1229 printf("\tjmp *%s\n",register_name(e2,0)); | |
| 1230 } | |
| 1231 | |
| 94 | 1232 int |
| 245 | 1233 code_rindirect(int e1, int reg,int offset, int sign) |
| 196 | 1234 { |
| 1235 char *crn,*op; | |
| 1236 int byte; | |
| 1237 g_expr(e1); | |
| 1238 byte = 0; op="movl"; | |
| 1239 crn = register_name(creg,0); | |
| 235 | 1240 use_int(reg); |
| 1241 printf("\t%s %d(%s),%s\n",op,offset,crn,register_name(reg,0)); | |
| 246 | 1242 return sign?INT:UNSIGNED; |
| 196 | 1243 } |
| 1244 | |
| 1245 int | |
| 245 | 1246 code_crindirect(int e1, int reg,int offset, int sign) |
| 61 | 1247 { |
| 196 | 1248 char *crn,*op; |
| 1249 int byte; | |
| 1250 g_expr(e1); | |
| 245 | 1251 byte = 0; op=sign?"movsbl":"movzbl"; |
| 196 | 1252 crn = register_name(creg,0); |
| 235 | 1253 use_int(reg); |
| 1254 printf("\t%s %d(%s),%s\n",op,offset,crn,register_name(reg,0)); | |
| 246 | 1255 return sign?CHAR:UCHAR; |
| 196 | 1256 } |
| 1257 | |
| 1258 int | |
| 245 | 1259 code_srindirect(int e1, int reg,int offset, int sign) |
| 196 | 1260 { |
| 1261 char *crn,*op; | |
| 1262 int byte; | |
| 1263 g_expr(e1); | |
| 245 | 1264 byte = 0; op=sign?"movswl":"movzwl"; |
| 196 | 1265 crn = register_name(creg,0); |
| 235 | 1266 use_int(reg); |
| 1267 printf("\t%s %d(%s),%s\n",op,offset,crn,register_name(reg,0)); | |
| 246 | 1268 return sign?SHORT:USHORT; |
| 196 | 1269 } |
| 1270 | |
| 195 | 1271 #if FLOAT_CODE |
| 196 | 1272 int |
| 225 | 1273 code_drindirect(int e1, int reg,int offset, int d) |
| 196 | 1274 { |
| 1275 g_expr(e1); | |
| 1276 printf("\t%s (%s)\n",fload(d),register_name(creg,0)); | |
| 1277 return DOUBLE; | |
| 1278 } | |
| 195 | 1279 #endif |
| 196 | 1280 |
| 1281 #if LONGLONG_CODE | |
| 237 | 1282 |
| 1283 static void | |
| 239 | 1284 lload(int creg,int offset,int reg) |
| 237 | 1285 { |
| 1286 char *crn = register_name(creg,0); | |
| 239 | 1287 use_longlong(reg); |
| 1288 if((reg==REG_L&&rname[creg]==REG_ESI)||(rname[creg]==REG_EAX)) { | |
| 245 | 1289 printf("\tmovl %d(%s),%s\n",offset+SIZE_OF_INT,crn,l_edx(reg)); |
| 240 | 1290 printf("\tmovl %d(%s),%s\n",offset,crn,l_eax(reg)); |
| 237 | 1291 } else { |
| 239 | 1292 printf("\tmovl %d(%s),%s\n",offset,crn,l_eax(reg)); |
| 245 | 1293 printf("\tmovl %d(%s),%s\n",offset+SIZE_OF_INT,crn,l_edx(reg)); |
| 237 | 1294 } |
| 1295 } | |
| 1296 | |
| 196 | 1297 int |
| 225 | 1298 code_lrindirect(int e1, int reg, int offset, int us) |
| 196 | 1299 { |
| 240 | 1300 int reg0; |
| 237 | 1301 g_expr(e1); |
| 240 | 1302 regv[reg0=creg]=1; |
| 237 | 1303 use_longlong(reg); |
| 240 | 1304 lload(reg0,offset,reg); |
| 203 | 1305 return LONGLONG; |
| 61 | 1306 } |
| 196 | 1307 #endif |
| 61 | 1308 |
| 1309 char * | |
| 1310 move(int byte) | |
| 1311 { | |
| 245 | 1312 return byte==1?"movb":byte==SIZE_OF_SHORT?"movw":"movl"; |
| 61 | 1313 } |
| 1314 | |
| 1315 void | |
| 103 | 1316 code_assign_gvar(int e2,int creg,int byte) { |
| 235 | 1317 use_int(creg); |
| 61 | 1318 if (byte) use_data_reg(creg,1); |
| 109 | 1319 printf("\t%s %s,%s\n",move(byte),register_name(creg,byte),((NMTBL*)cadr(e2))->nm); |
| 61 | 1320 } |
| 1321 | |
| 1322 void | |
| 103 | 1323 code_assign_lvar(int e2,int creg,int byte) { |
| 235 | 1324 use_int(creg); |
| 61 | 1325 if (byte) use_data_reg(creg,1); |
| 119 | 1326 printf("\t%s %s,%d(%%ebp)\n",move(byte),register_name(creg,byte),lvar(e2)); |
| 61 | 1327 } |
| 1328 | |
| 1329 void | |
| 111 | 1330 code_assign_register(int e2,int byte,int creg) { |
| 235 | 1331 use_int(creg); |
| 286 | 1332 if (creg!=e2) |
| 1333 printf("\tmovl %s,%s\n",register_name(creg,0),register_name(e2,0)); | |
| 61 | 1334 } |
| 1335 | |
| 1336 void | |
| 118 | 1337 code_assign(int e2,int byte,int creg) { |
| 235 | 1338 use_int(e2); |
| 1339 use_int(creg); | |
| 95 | 1340 if (byte) use_data_reg(creg,1); |
| 61 | 1341 printf("\t%s %s,(%s)\n",move(byte),register_name(creg,byte),register_name(e2,0)); |
| 144 | 1342 regv[creg]=1; |
| 61 | 1343 } |
| 1344 | |
| 1345 void | |
| 225 | 1346 code_register_assop(int e2,int reg0,int op,int byte) { |
| 61 | 1347 int reg; |
| 1348 int xreg = creg; | |
| 1349 creg = reg = e2; | |
| 225 | 1350 tosop(op,reg,xreg); |
| 61 | 1351 creg = xreg; |
| 286 | 1352 // printf("\tmovl %s,%s\n",register_name(reg,0),register_name(creg,0)); |
| 159 | 1353 regs[creg]=regv[creg]=1; |
| 61 | 1354 } |
| 1355 | |
| 1356 | |
| 1357 void | |
| 225 | 1358 code_assop(int op,int reg,int byte,int sign) { |
| 61 | 1359 char *xrn; |
| 1360 int xreg; | |
| 237 | 1361 int edx = edx_setup(-1); |
| 235 | 1362 use_int(reg); |
| 61 | 1363 xrn = register_name(xreg = emit_pop(0),0); /* pop e3 value */ |
| 1364 regv[xreg]=regs[xreg]=1; | |
| 235 | 1365 printf("\tmovl %s,%s # assop \n",register_name(reg,0),register_name(edx,0)); |
| 61 | 1366 regv[edx]=1; |
| 235 | 1367 ld_indexx(byte,0,edx,reg,sign); |
| 225 | 1368 tosop(op,reg,xreg); |
| 235 | 1369 printf("\t%s %s,(%s)\n",move(byte),register_name(reg,byte),register_name(edx,0)); |
| 61 | 1370 edx_cleanup(); |
| 1371 emit_pop_free(xreg); | |
| 144 | 1372 regv[creg]=1; |
| 61 | 1373 } |
| 1374 | |
| 1375 | |
| 1376 void | |
| 225 | 1377 tosop(int op,int reg,int oreg) |
| 61 | 1378 { |
| 1379 int dx; | |
| 1380 char *orn,*crn; | |
| 235 | 1381 use_int(reg); |
| 61 | 1382 |
| 1383 switch(op) { | |
| 1384 case LSHIFT: | |
| 1385 case ULSHIFT: | |
| 235 | 1386 shift("sall",oreg,reg); |
| 144 | 1387 regv[creg]=1; |
| 61 | 1388 return; |
| 1389 case RSHIFT: | |
| 235 | 1390 shift("sarl",oreg,reg); |
| 144 | 1391 regv[creg]=1; |
| 61 | 1392 return; |
| 1393 case URSHIFT: | |
| 235 | 1394 shift("shrl",oreg,reg); |
| 144 | 1395 regv[creg]=1; |
| 61 | 1396 return; |
| 1397 } | |
| 1398 if(oreg==-1) { | |
| 1399 printf("\tpopl %s\n",register_name(dreg,0)); | |
| 1400 oreg = dreg; | |
| 1401 regv[dreg]=1; | |
| 94 | 1402 } else if (oreg<= -REG_LVAR_OFFSET) { |
| 119 | 1403 code_rlvar(oreg+REG_LVAR_OFFSET,dreg); |
| 117 | 1404 free_lvar(oreg+REG_LVAR_OFFSET); |
| 94 | 1405 oreg = dreg; |
| 1406 regv[dreg]=1; | |
| 61 | 1407 } |
| 1408 regv[oreg]=1; regs[oreg]=1; | |
| 1409 orn = register_name(oreg,0); | |
| 1410 crn = register_name(creg,0); | |
| 1411 switch(op) { | |
| 1412 case ADD: | |
| 1413 printf("\taddl %s,%s\n",orn,crn); | |
| 1414 break; | |
| 89 | 1415 case SUB: case CMP: |
| 61 | 1416 printf("\tsubl %s,%s\n",orn,crn); |
| 1417 break; | |
| 1418 case BAND: | |
| 1419 printf("\tandl %s,%s\n",orn,crn); | |
| 1420 break; | |
| 1421 case EOR: | |
| 1422 printf("\txorl %s,%s\n",orn,crn); | |
| 1423 break; | |
| 1424 case BOR: | |
| 1425 printf("\torl %s,%s\n",orn,crn); | |
| 1426 break; | |
| 1427 case MUL: | |
| 1428 case UMUL: | |
| 1429 printf("\t%s %s,%s\n","imull",orn,crn); | |
| 1430 break; | |
| 1431 case DIV: | |
| 1432 case UDIV: | |
| 1433 use_register(creg,REG_EAX,1); | |
| 237 | 1434 edx_setup(REG_EDX); |
| 61 | 1435 orn = register_name(oreg,0); |
| 1436 if (op==DIV) | |
| 127 | 1437 printf("\tcltd\n\tidivl %s\n",orn); |
| 61 | 1438 else |
| 127 | 1439 printf("\txor %%edx,%%edx\n\tdivl %s\n",orn); |
| 61 | 1440 edx_cleanup(); |
| 1441 break; | |
| 1442 case MOD: | |
| 1443 case UMOD: | |
| 1444 use_register(creg,REG_EAX,1); | |
| 237 | 1445 edx_setup(REG_EDX); |
| 61 | 1446 orn = register_name(oreg,0); |
| 235 | 1447 if (op==MOD) |
| 127 | 1448 printf("\tcltd\n\tidivl %s\n",orn); |
| 61 | 1449 else |
| 127 | 1450 printf("\txor %%edx,%%edx\n\tdivl %s\n",orn); |
| 61 | 1451 dx = virtual(REG_EDX); |
| 1452 if (dx!=creg) { | |
| 1453 rname[dx]=rname[creg]; | |
| 1454 rname[creg]=REG_EDX; | |
| 1455 } | |
| 1456 edx_cleanup(); | |
| 1457 break; | |
| 1458 } | |
| 159 | 1459 if (oreg!=dreg&&oreg!=creg&&oreg>=0) |
| 61 | 1460 free_register(oreg); |
| 94 | 1461 else if (oreg==dreg) regv[dreg]=0; |
| 144 | 1462 regv[creg]=1; |
| 61 | 1463 } |
| 1464 | |
| 189 | 1465 int |
| 240 | 1466 code_const_op_p(int op,int e) |
| 189 | 1467 { |
| 240 | 1468 if (car(e)!=CONST) return 0; |
| 190 | 1469 if (op==DIV||op==UDIV||op==MOD||op==UMOD) return 0; |
| 189 | 1470 else return 1; |
| 1471 } | |
| 1472 | |
| 1473 void | |
| 225 | 1474 oprtc(int op,int reg,int orn) |
| 189 | 1475 { |
| 235 | 1476 char *crn; |
| 1477 use_int(reg); | |
| 1478 crn = register_name(reg,0); | |
| 240 | 1479 orn = cadr(orn); |
| 189 | 1480 |
| 1481 switch(op) { | |
| 1482 case LSHIFT: | |
| 1483 case ULSHIFT: | |
| 1484 printf("\tsall $%d,%s\n",orn,crn); | |
| 1485 return; | |
| 1486 case RSHIFT: | |
| 1487 printf("\tsarl $%d,%s\n",orn,crn); | |
| 1488 return; | |
| 1489 case URSHIFT: | |
| 1490 printf("\tshrl $%d,%s\n",orn,crn); | |
| 1491 return; | |
| 1492 case ADD: | |
| 1493 printf("\taddl $%d,%s\n",orn,crn); | |
| 1494 break; | |
| 1495 case SUB: case CMP: | |
| 1496 printf("\tsubl $%d,%s\n",orn,crn); | |
| 1497 break; | |
| 1498 case BAND: | |
| 1499 printf("\tandl $%d,%s\n",orn,crn); | |
| 1500 break; | |
| 1501 case EOR: | |
| 1502 printf("\txorl $%d,%s\n",orn,crn); | |
| 1503 break; | |
| 1504 case BOR: | |
| 1505 printf("\torl $%d,%s\n",orn,crn); | |
| 1506 break; | |
| 1507 case MUL: | |
| 1508 case UMUL: | |
| 1509 printf("\t%s $%d,%s\n","imull",orn,crn); | |
| 1510 break; | |
| 1511 default: | |
| 1512 error(-1); | |
| 1513 } | |
| 1514 } | |
| 1515 | |
| 1516 | |
| 61 | 1517 static int edx_stack=0; |
| 1518 | |
| 1519 int | |
| 237 | 1520 edx_setup(int rreg) |
| 61 | 1521 { |
| 1522 int edx_save; | |
| 302 | 1523 /* make real EDX (or rreg) register empty */ |
| 137 | 1524 if (free_register_count(0)<1) { |
| 61 | 1525 for(edx_save = 0;edx_save==dreg||edx_save==creg;edx_save++); |
| 1526 printf("\tpushl %s\n",register_name(edx_save,0)); | |
| 1527 edx_stack = list3(edx_save,edx_stack,0); | |
| 1528 } else { | |
| 1529 edx_save = get_register(); | |
| 1530 edx_stack = list3(edx_save,edx_stack,1); | |
| 1531 } | |
| 1532 regv[edx_save]=0; | |
| 237 | 1533 if (rreg!=-1) |
| 1534 use_register(edx_save,rreg,0); | |
| 61 | 1535 return edx_save; |
| 1536 } | |
| 1537 | |
| 1538 | |
| 1539 void | |
| 1540 edx_cleanup() | |
| 1541 { | |
| 1542 if (caddr(edx_stack)==0) { | |
| 1543 printf("\tpopl %s\n",register_name(car(edx_stack),0)); | |
| 1544 } else | |
| 1545 free_register(car(edx_stack)); | |
| 1546 edx_stack = cadr(edx_stack); | |
| 1547 } | |
| 1548 | |
| 1549 void | |
| 235 | 1550 shift(char *op, int reg,int creg) |
| 61 | 1551 { |
| 235 | 1552 use_int(creg); |
| 61 | 1553 if (reg>=0) { |
| 1554 use_register(reg,REG_ECX,1); | |
| 103 | 1555 } else if (reg<= -REG_LVAR_OFFSET) { |
| 1556 use_register(dreg,REG_ECX,0); | |
| 119 | 1557 code_rlvar(reg+REG_LVAR_OFFSET,dreg); |
| 103 | 1558 reg = dreg; |
| 1559 regv[dreg]=0; | |
| 61 | 1560 } else { |
| 1561 use_register(dreg,REG_ECX,0); | |
| 1562 printf("\tpopl %%ecx\n"); | |
| 103 | 1563 regv[dreg]=0; |
| 61 | 1564 } |
| 1565 printf("\t%s %%cl,%s\n",op,register_name(creg,0)); | |
| 1566 } | |
| 1567 | |
| 1568 void | |
| 235 | 1569 ld_indexx(int byte, int n, int xreg,int reg,int sign) |
| 61 | 1570 { |
| 1571 char *op; | |
| 1572 | |
| 235 | 1573 use_int(reg); |
| 166 | 1574 op = byte ? (sign?"movsbl":"movzbl") : "movl"; |
| 61 | 1575 if (n) |
| 95 | 1576 printf("\t%s %d(%s),%s\n",op,n, |
| 235 | 1577 register_name(xreg,0),register_name(reg,byte)); |
| 61 | 1578 else |
| 95 | 1579 printf("\t%s (%s),%s\n",op, |
| 235 | 1580 register_name(xreg,0),register_name(reg,byte)); |
| 95 | 1581 } |
| 1582 | |
| 1583 int | |
| 1584 code_csvalue() | |
| 1585 { | |
| 123 | 1586 return rname[creg]; /* for switch value */ |
| 61 | 1587 } |
| 1588 | |
| 1589 void | |
| 287 | 1590 code_cmpdimm(int e, int csreg,int label,int cond) |
| 61 | 1591 { |
| 1592 /* used in dosiwtch() */ | |
| 66 | 1593 if(chk) return; |
| 123 | 1594 use_register(creg,csreg,0); |
| 61 | 1595 printf("\tcmpl $%d,%s\n",e,register_name(creg,0)); |
| 287 | 1596 jcond(label,cond); |
| 61 | 1597 } |
| 1598 | |
| 1599 void | |
| 66 | 1600 code_opening(char *filename) |
| 61 | 1601 { |
| 1602 printf("\t.file \"%s\"\n",filename); | |
| 1603 printf("\t.version\t\"01.01\"\n"); | |
| 66 | 1604 /* printf("gcc2_compiled.:\n"); */ |
| 61 | 1605 printf(".text\n"); |
| 1606 } | |
| 1607 | |
| 1608 void | |
| 66 | 1609 code_closing() |
| 61 | 1610 { |
| 78 | 1611 global_table(); |
| 61 | 1612 printf("\t.ident \"Micro-C compiled\"\n"); |
| 1613 } | |
| 1614 | |
| 291 | 1615 static char * |
| 1616 code_cond(int op,int cond) | |
| 1617 { | |
| 1618 switch(op) { | |
| 1619 case GT: return code_gt(cond); | |
| 1620 case UGT: return code_ugt(cond); | |
| 1621 case GE: return code_ge(cond); | |
| 1622 case UGE: return code_uge(cond); | |
| 1623 case LT: return code_ge(!cond); | |
| 1624 case ULT: return code_uge(!cond); | |
| 1625 case LE: return code_gt(!cond); | |
| 1626 case ULE: return code_ugt(!cond); | |
| 1627 case EQ: return code_eq(cond); | |
| 1628 case NEQ: return code_eq(!cond); | |
| 1629 default: return 0; | |
| 1630 } | |
| 1631 } | |
| 1632 | |
| 1633 static int | |
| 1634 rexpr_bool(int e1,int reg) | |
| 1635 { | |
| 1636 char *s; | |
| 1637 if (!(s=code_cond(car(e1),1))) return 0; | |
| 1638 g_expr(list3(CMP,cadr(e1),caddr(e1))); | |
| 1639 use_int(reg); | |
| 1640 use_data_reg(reg,0); | |
| 1641 printf("\tset%s\t%s\n",s,register_name(reg,1)); | |
| 1642 printf("\tmovzbl %s,%s\n",register_name(reg,1),register_name(reg,0)); | |
| 1643 return 1; | |
| 1644 } | |
| 1645 | |
| 61 | 1646 void |
| 280 | 1647 rexpr(int e1, int l1, int cond,int t) |
| 1648 { | |
| 89 | 1649 g_expr(list3(CMP,cadr(e1),caddr(e1))); |
| 291 | 1650 printf("\tj%s\t_%d\n",code_cond(car(e1),cond),l1); |
| 61 | 1651 } |
| 1652 | |
| 82 | 1653 |
| 287 | 1654 static void |
| 61 | 1655 jcond(int l, char cond) |
| 1656 { | |
| 66 | 1657 if (chk) return; |
| 302 | 1658 printf("\tj%s\t_%d\n",cond==LT?code_ge(0):cond?"ne":"e",l); |
| 61 | 1659 } |
| 1660 | |
| 1661 void | |
| 1662 jmp(int l) | |
| 1663 { | |
| 1664 control=0; | |
| 66 | 1665 if (chk) return; |
| 61 | 1666 printf("\tjmp\t_%d\n",l); |
| 1667 /* align? */ | |
| 1668 /* | |
| 1669 this is not allowed because of ? operator | |
| 1670 regv[creg]=regv[dreg]=0; | |
| 1671 use_register(creg,REG_EAX,0); | |
| 1672 use_register(dreg,REG_EBX,0); | |
| 1673 */ | |
| 1674 } | |
| 1675 | |
| 1676 void | |
| 1677 gen_comment(char *s) | |
| 1678 { | |
| 66 | 1679 if (chk) return; |
| 1680 printf("## %s",s); | |
| 61 | 1681 } |
| 1682 | |
| 1683 | |
| 1684 void | |
| 1685 code_enter(char *name) | |
| 1686 { | |
| 1687 printf("\t.align 4\n"); | |
| 1688 if (stmode!=STATIC) | |
| 1689 printf(".globl %s\n",name); | |
| 1690 printf("\t.type\t%s,@function\n",name); | |
| 1691 printf("%s:\n",name); | |
| 1692 } | |
| 1693 | |
| 77 | 1694 |
| 61 | 1695 void |
| 1696 code_enter1(int args) | |
| 1697 { | |
| 1698 code_disp_label=fwdlabel(); | |
| 1699 printf("\tlea _%d(%%ebp),%%esp\n",code_disp_label); | |
| 1700 | |
| 1701 printf("## args %d disp %d code_arg_offset=%d code_disp_offset=%d\n",args,disp,code_arg_offset,code_disp_offset); | |
| 1702 } | |
| 1703 | |
| 1704 void | |
| 1705 code_leave(char *name) | |
| 1706 { | |
| 245 | 1707 disp &= -SIZE_OF_INT; |
| 61 | 1708 printf("\t.set _%d,%d\n",code_disp_label,disp+code_disp_offset); |
| 1709 printf("_%d:\n",labelno); | |
| 1710 printf("\t.size\t%s,_%d-%s\n",name,labelno,name); | |
| 1711 local_table(); | |
| 1712 labelno++; | |
| 1713 free_all_register(); | |
| 1714 } | |
| 1715 | |
| 1716 void | |
| 1717 enter(char *name) | |
| 1718 { | |
| 1719 printf("\t.align 2\n"); | |
| 1720 if (stmode!=STATIC) | |
| 1721 printf(".globl %s\n",name); | |
| 1722 printf("%s:\n",name); | |
| 1723 printf("\t.type\t%s,@function\n",name); | |
| 1724 printf("\tpushl %%ebp\n"); | |
| 1725 printf("\tmovl %%esp,%%ebp\n"); | |
| 1726 printf("\tpushl %%ebx\n"); | |
| 1727 printf("\tpushl %%esi\n"); | |
| 1728 printf("\tpushl %%edi\n"); | |
| 1729 } | |
| 1730 | |
| 1731 void | |
| 1732 enter1() | |
| 1733 { | |
| 182 | 1734 text_mode(); |
| 61 | 1735 func_disp_label=fwdlabel(); |
| 1736 printf("\tlea _%d(%%ebp),%%esp\n",func_disp_label); | |
| 1737 /* if(disp) printf("\tsubl $%d,%%esp\n",-disp); */ | |
| 1738 } | |
| 1739 | |
| 1740 void | |
| 1741 leave(int control, char *name) | |
| 1742 { | |
| 128 | 1743 int sz; |
| 1744 | |
| 245 | 1745 disp &= -SIZE_OF_INT; |
| 61 | 1746 if (control) |
| 108 | 1747 code_set_return_register(1); |
| 61 | 1748 if (retcont) { |
| 1749 if (control) | |
| 1750 jmp(retlabel); | |
| 1751 fwddef(retcont); | |
| 128 | 1752 if (cadr(fnptr->ty)==FLOAT||cadr(fnptr->ty)==DOUBLE) { |
| 245 | 1753 printf("\tfldl %d(%%ebp)\n",-SIZE_OF_DOUBLE); |
| 128 | 1754 } else if (cadr(fnptr->ty)>0&&( |
| 1755 car(cadr(fnptr->ty))==STRUCT || | |
| 1756 car(cadr(fnptr->ty))==UNION)) { | |
| 1757 sz = size(cadr(fnptr->ty)); | |
| 1758 printf("\tlea %d(%%ebp),%s\n",-sz,register_name(dreg,0)); | |
| 245 | 1759 printf("\tmovl %d(%%ebp),%s\n",disp-SIZE_OF_INT, |
| 128 | 1760 register_name(creg,0)); |
| 1761 emit_copy(dreg,creg,sz,0,1,1); | |
| 1762 } else if (cadr(fnptr->ty)!=VOID) { | |
| 1763 use_register(creg,REG_EAX,0); | |
| 1764 printf("\tmovl %s,%s\n",reg_name[REG_ESI],register_name(creg,0)); | |
| 1765 } | |
| 61 | 1766 } |
| 1767 fwddef(retlabel); | |
| 63 | 1768 |
| 61 | 1769 printf("\tlea %d(%%ebp),%%esp\n",disp_offset); |
| 1770 printf("\tpopl %%edi\n"); | |
| 1771 printf("\tpopl %%esi\n"); | |
| 1772 printf("\tpopl %%ebx\n"); | |
| 1773 printf("\tleave\n"); | |
| 1774 printf("\tret\n"); | |
| 1775 printf("\t.set _%d,%d\n",func_disp_label,disp+disp_offset); | |
| 1776 printf("_%d:\n",labelno); | |
| 1777 printf("\t.size\t%s,_%d-%s\n",name,labelno,name); | |
| 1778 local_table(); | |
| 1779 labelno++; | |
| 1780 free_all_register(); | |
| 1781 } | |
| 1782 | |
| 187 | 1783 int |
| 1784 code_get_fixed_creg(int reg,int type) { | |
| 1785 if (type==FLOAT||type==DOUBLE) { | |
| 1786 return 0; | |
| 239 | 1787 } else if (type==LONGLONG||type==ULONGLONG) { |
| 1788 use_longlong(reg); | |
| 1789 return reg; | |
| 187 | 1790 } else { |
| 236 | 1791 use_int(reg); |
| 187 | 1792 return rname[reg]; |
| 1793 } | |
| 1794 } | |
| 61 | 1795 |
| 1796 void | |
| 187 | 1797 code_set_fixed_creg(int reg,int mode,int type) { |
| 108 | 1798 if (type==FLOAT||type==DOUBLE) { |
| 239 | 1799 } else if (type==LONGLONG||type==ULONGLONG) { |
| 187 | 1800 } else { |
| 1801 use_register(creg,reg,mode); | |
| 1802 } | |
| 61 | 1803 } |
| 1804 | |
| 1805 void | |
| 107 | 1806 code_set_return_register(int mode) { |
| 1807 if (fnptr->ty==DOUBLE||fnptr->ty==FLOAT) { | |
| 239 | 1808 } else if (fnptr->ty==LONGLONG||fnptr->ty==ULONGLONG) { |
| 243 | 1809 use_longlong0(USE_CREG); |
| 107 | 1810 } else { |
| 1811 use_register(creg,REG_EAX,mode); | |
| 1812 } | |
| 1813 } | |
| 1814 | |
| 1815 void | |
| 61 | 1816 gen_gdecl(char *n, int gpc) |
| 1817 { | |
| 1818 /* | |
| 1819 if (stmode!=STATIC) | |
| 1820 printf(".globl %s\n",n); | |
| 1821 */ | |
| 1822 } | |
| 1823 | |
| 1824 void | |
| 1825 align(int t) | |
| 1826 { | |
| 1827 if (t!=CHAR) { | |
| 1828 if (data_alignment & 1) | |
| 1829 printf("\t.align 2\n"); | |
| 1830 data_alignment = 0; | |
| 1831 } | |
| 1832 } | |
| 1833 | |
| 239 | 1834 #if LONGLONG_CODE |
| 1835 static long long ll0 = 1LL; | |
| 1836 | |
| 1837 static int | |
| 1838 code_l1(long long d) | |
| 1839 { | |
| 1840 int *i = (int *)&ll0; int *j = (int *)&d; | |
| 1841 return (i[1] == 1)?j[1]:j[0]; | |
| 1842 } | |
| 1843 | |
| 1844 static int | |
| 1845 code_l2(long long d) | |
| 1846 { | |
| 1847 int *i = (int *)&ll0; int *j = (int *)&d; | |
| 1848 return (i[1] == 1)?j[0]:j[1]; | |
| 1849 } | |
| 1850 #endif | |
| 1851 | |
| 61 | 1852 void |
| 1853 emit_data(int e, int t, NMTBL *n) | |
| 1854 { | |
| 1855 int l; | |
| 195 | 1856 #if FLOAT_CODE |
| 82 | 1857 double d; |
| 1858 float f; | |
| 195 | 1859 #endif |
| 239 | 1860 #if LONGLONG_CODE |
| 1861 long long ll; | |
| 1862 #endif | |
| 61 | 1863 char *name; |
| 1864 name = n->nm; | |
| 156 | 1865 if(mode!=GDECL && mode!=STADECL) { |
| 61 | 1866 error(-1); return; |
| 1867 } | |
| 66 | 1868 if (chk) return; |
| 61 | 1869 if (n->dsp != -1) { |
| 1870 n->dsp = -1; /* initiallized flag */ | |
| 1871 printf(".globl\t%s\n",name); | |
| 1872 data_mode(name); | |
| 1873 align(t); | |
| 1874 printf("%s:\n",name); | |
| 1875 } else { | |
| 1876 data_mode(0); | |
| 1877 } | |
| 309 | 1878 if (t==EMPTY) { |
| 1879 if(car(e)!=CONST) error(-1); | |
| 1880 printf("\t.space\t%d\n",cadr(e)); | |
| 1881 return; | |
| 1882 } | |
| 61 | 1883 if(car(e)==CONST) { |
| 168 | 1884 if (t==CHAR||t==UCHAR) { |
| 61 | 1885 printf("\t.byte %d\n",cadr(e)); |
| 1886 if (data_alignment>0) | |
| 1887 data_alignment++; | |
| 1888 gpc += 1; | |
| 168 | 1889 } else if (t==SHORT||t==USHORT) { |
| 1890 printf("\t.short %d\n",cadr(e)); | |
| 82 | 1891 if (data_alignment>0) data_alignment++; |
| 245 | 1892 gpc += SIZE_OF_SHORT; |
| 61 | 1893 } else { |
| 1894 printf("\t.long %d\n",cadr(e)); | |
| 245 | 1895 gpc += SIZE_OF_INT; |
| 61 | 1896 } |
| 239 | 1897 #if LONGLONG_CODE |
| 1898 } else if(t==LONGLONG||t==ULONGLONG) { | |
| 1899 ll = lcadr(e); | |
| 243 | 1900 printf("\t.long\t0x%x,0x%x\n",code_l1(ll),code_l2(ll)); |
| 239 | 1901 #endif |
| 195 | 1902 #if FLOAT_CODE |
| 82 | 1903 } else if(t==DOUBLE) { |
| 1904 d = dcadr(e); | |
| 1905 printf("\t.long\t0x%x,0x%x\n",code_d1(d),code_d2(d)); | |
| 1906 } else if(t==FLOAT) { | |
| 1907 f = dcadr(e); | |
| 1908 printf("\t.long\t0x%x\n",*(int *)&f); | |
| 195 | 1909 #endif |
| 61 | 1910 } else if(t!=CHAR) { |
| 245 | 1911 gpc += SIZE_OF_INT; |
| 61 | 1912 if(car(e)==ADDRESS&&car(cadr(e))==GVAR) { |
| 109 | 1913 printf("\t.long %s\n",((NMTBL *)cadr(cadr(e)))->nm); |
| 1914 } else if(car(e)==GVAR) { | |
| 1915 printf("\t.long %s\n",((NMTBL *)cadr(e))->nm); | |
| 61 | 1916 } else if(car(e)==FNAME) { |
| 1917 printf("\t.long %s\n",((NMTBL *)cadr(e))->nm); | |
| 1918 } else if(car(e)==STRING) { | |
| 1919 if (car(n->ty)!=ARRAY || cadr(n->ty)!=CHAR) { | |
| 1920 l = fwdlabel(); | |
| 1921 printf("\t.long _%d\n",l); | |
| 1922 printf(".section\t.rodata\n"); | |
| 1923 printf("_%d:\n",l); | |
| 1924 output_mode = RODATA_EMIT_MODE; | |
| 1925 } | |
| 1926 ascii((char *)cadr(e)); | |
| 1927 } else error(TYERR); | |
| 168 | 1928 } else error(TYERR); |
| 61 | 1929 } |
| 1930 | |
| 1931 void | |
| 1932 emit_data_closing(NMTBL *n) | |
| 1933 { | |
| 1934 int lb; | |
| 66 | 1935 if (chk) return; |
| 61 | 1936 if (mode==GDECL) { |
| 1937 data_mode(0); | |
| 1938 lb=fwdlabel(); | |
| 1939 printf("_%d:\n",lb); | |
| 1940 printf("\t.size\t%s,_%d-%s\n",n->nm,lb,n->nm); | |
| 1941 } | |
| 1942 } | |
| 1943 | |
| 1944 void | |
| 1945 global_table(void) | |
| 1946 { | |
| 1947 NMTBL *n; | |
| 1948 int init; | |
| 1949 init=0; | |
| 1950 for(n=ntable;n < &ntable[GSYMS];n++) { | |
| 117 | 1951 if ((n->sc == GVAR||n->sc == STATIC) && n->dsp != -1) { |
| 61 | 1952 /* n->dsp = -1 means initialized global */ |
| 1953 if (init==0) { | |
| 1954 data_mode(0); | |
| 1955 init=1; | |
| 1956 } | |
| 1957 printf(".comm %s,%d\n",n->nm,size(n->ty)); | |
| 1958 } | |
| 1959 } | |
| 1960 } | |
| 1961 | |
| 1962 void | |
| 1963 local_table(void) | |
| 1964 { | |
| 1965 NMTBL *n; | |
| 1966 int init; | |
| 1967 init=0; | |
| 1968 /* static local variables */ | |
| 1969 for(n=ntable+GSYMS;n < &ntable[GSYMS+LSYMS];n++) { | |
| 1970 if (n->sc == GVAR) { | |
| 1971 if (init==0) { | |
| 1972 data_mode(0); | |
| 1973 init=1; | |
| 1974 } | |
| 156 | 1975 if (n->dsp!= -1) /* -1 means initialized global */ |
| 1976 printf(".lcomm %s,%d\n",n->nm,size(n->ty)); | |
| 61 | 1977 } |
| 1978 } | |
| 1979 } | |
| 1980 | |
| 1981 void | |
| 1982 text_mode(void) | |
| 1983 { | |
| 1984 if (output_mode!=TEXT_EMIT_MODE) { | |
| 1985 printf(".text\n"); | |
| 1986 printf("\t.align 2\n"); | |
| 1987 output_mode = TEXT_EMIT_MODE; | |
| 1988 } | |
| 1989 } | |
| 1990 | |
| 1991 void | |
| 1992 data_mode(char *name) | |
| 1993 { | |
| 1994 if (output_mode!=DATA_EMIT_MODE) { | |
| 1995 printf(".data\n"); | |
| 1996 output_mode = DATA_EMIT_MODE; | |
| 1997 } | |
| 1998 if (name) | |
| 1999 printf("\t.type\t%s,@object\n",name); | |
| 2000 } | |
| 2001 | |
| 195 | 2002 #if FLOAT_CODE |
| 2003 | |
| 81 | 2004 /* floating point */ |
| 2005 | |
| 2006 | |
| 82 | 2007 char * |
| 2008 fstore(int d) | |
| 2009 { | |
| 83 | 2010 return use? |
| 2011 (d?"fstl":"fsts"): | |
| 2012 (d?"fstpl":"fstps") | |
| 2013 ; | |
| 2014 } | |
| 2015 | |
| 2016 char * | |
| 2017 fstore_u(int d) | |
| 2018 { | |
| 82 | 2019 return d?"fstpl":"fstps"; |
| 2020 } | |
| 81 | 2021 |
| 82 | 2022 char * |
| 2023 fload(int d) | |
| 2024 { | |
| 2025 return d?"fldl":"flds"; | |
| 2026 } | |
| 81 | 2027 |
| 2028 | |
| 103 | 2029 void code_dassign_gvar(int e2,int freg,int d) |
| 82 | 2030 { |
| 109 | 2031 printf("\t%s %s\n",fstore(d),((NMTBL*)cadr(e2))->nm); |
| 82 | 2032 } |
| 2033 | |
| 103 | 2034 void code_dassign_lvar(int e2,int freg,int d) |
| 82 | 2035 { |
| 119 | 2036 printf("\t%s %d(%%ebp)\n",fstore(d),lvar(e2)); |
| 82 | 2037 } |
| 2038 | |
| 138 | 2039 void code_dassign_dregister(int e,int d,int freg) |
| 111 | 2040 { |
| 2041 error(-1); | |
| 2042 } | |
| 2043 | |
| 103 | 2044 void code_dassign(int e2,int freg,int d) |
| 82 | 2045 { |
| 2046 printf("\t%s (%s)\n",fstore(d),register_name(e2,0)); | |
| 2047 } | |
| 2048 | |
| 2049 static double d0 = 1.0; | |
| 81 | 2050 |
| 82 | 2051 int |
| 2052 code_d1(double d) | |
| 2053 { | |
| 2054 int *i = (int *)&d0; int *j = (int *)&d; | |
| 2055 return (i[1] == 0x3ff00000)?j[0]:j[1]; | |
| 2056 } | |
| 2057 | |
| 2058 int | |
| 2059 code_d2(double d) | |
| 2060 { | |
| 2061 int *i = (int *)&d0; int *j = (int *)&d; | |
| 2062 return (i[1] == 0x3ff00000)?j[1]:j[0]; | |
| 2063 } | |
| 2064 | |
| 138 | 2065 void code_dconst(int e2,int freg,int d) |
| 82 | 2066 { |
| 2067 int lb; | |
| 138 | 2068 double value = dcadr(e2); |
| 81 | 2069 |
| 138 | 2070 if (value==0.0) { |
| 82 | 2071 printf("\tfldz\n"); return; |
| 2072 } | |
| 138 | 2073 if (value==1.0) { |
| 82 | 2074 printf("\tfld1\n"); return; |
| 2075 } | |
| 2076 printf(" \t.section\t.rodata\n\t.align 8\n"); | |
| 2077 lb=fwdlabel(); | |
| 2078 printf("_%d:\n",lb); | |
| 138 | 2079 printf("\t.long\t0x%x,0x%x\n",code_d1(value),code_d2(value)); |
| 82 | 2080 if (output_mode==TEXT_EMIT_MODE) { |
| 2081 printf(".text\n"); | |
| 2082 } else { | |
| 2083 text_mode(); | |
| 2084 } | |
| 2085 printf("\tfldl _%d\n",lb); | |
| 2086 } | |
| 2087 | |
| 138 | 2088 void code_dneg(int freg,int d) |
| 82 | 2089 { |
| 2090 printf("\tfchs\n"); | |
| 2091 } | |
| 81 | 2092 |
| 239 | 2093 void code_d2i(int reg) |
| 82 | 2094 { |
| 239 | 2095 use_int(reg); |
| 245 | 2096 printf("\tlea -%d(%%esp),%%esp\n",SIZE_OF_INT*2); |
| 82 | 2097 printf("\tfnstcw (%%esp)\n"); |
| 2098 printf("\tmovl (%%esp), %s\n",register_name(creg,0)); | |
| 2099 printf("\tmovb $12, 1(%%esp)\n"); | |
| 2100 printf("\tfldcw (%%esp)\n"); | |
| 245 | 2101 printf("\tfistpl %d(%%esp)\n",SIZE_OF_INT); |
| 127 | 2102 printf("\tmovl %s, (%%esp)\n",register_name(creg,0)); |
| 85 | 2103 printf("\tfldcw (%%esp)\n"); |
| 82 | 2104 printf("\tpopl %s\n",register_name(creg,0)); |
| 2105 printf("\tpopl %s\n",register_name(creg,0)); | |
| 2106 } | |
| 81 | 2107 |
| 239 | 2108 void code_i2d(int reg) |
| 82 | 2109 { |
| 2110 printf("\tpushl %s\n",register_name(creg,0)); | |
| 2111 printf("\tfildl (%%esp)\n"); | |
| 245 | 2112 printf("\tlea %d(%%esp),%%esp\n",SIZE_OF_INT); |
| 82 | 2113 } |
| 2114 | |
| 239 | 2115 void code_d2u(int reg) |
| 85 | 2116 { |
| 239 | 2117 use_int(reg); |
| 245 | 2118 printf("\tlea -%d(%%esp),%%esp\n",SIZE_OF_INT*3); |
| 85 | 2119 printf("\tfnstcw (%%esp)\n"); |
| 239 | 2120 printf("\tmovl (%%esp), %s\n",register_name(reg,0)); |
| 85 | 2121 printf("\tmovb $12, 1(%%esp)\n"); |
| 2122 printf("\tfldcw (%%esp)\n"); | |
| 239 | 2123 printf("\tmovl %s, (%%esp)\n",register_name(reg,0)); |
| 245 | 2124 printf("\tfistpll %d(%%esp)\n",SIZE_OF_INT); |
| 85 | 2125 printf("\tfldcw (%%esp)\n"); |
| 245 | 2126 printf("\tmovl %d(%%esp),%s\n",SIZE_OF_INT,register_name(reg,0)); |
| 2127 printf("\tlea %d(%%esp),%%esp\n",SIZE_OF_INT*3); | |
| 85 | 2128 } |
| 2129 | |
| 239 | 2130 void code_u2d(int reg) |
| 85 | 2131 { |
| 86 | 2132 printf("\tpushl %s\n",register_name(creg,0)); |
| 2133 printf("\tpushl %s\n",register_name(creg,0)); | |
| 245 | 2134 printf("\tmovl $0, %d(%%esp)\n",SIZE_OF_INT); |
| 86 | 2135 printf("\tfildll (%%esp)\n"); |
| 245 | 2136 printf("\tlea %d(%%esp),%%esp\n",SIZE_OF_INT*2); |
| 85 | 2137 } |
| 2138 | |
| 239 | 2139 void code_d2f(int reg) { } |
| 2140 void code_f2d(int reg) { } | |
| 2141 void code_f2i(int reg) { code_d2i(reg); } | |
| 2142 void code_f2u(int reg) { code_d2u(reg); } | |
| 2143 void code_i2f(int reg) { code_i2d(reg); } | |
| 2144 void code_u2f(int reg) { code_u2d(reg); } | |
| 133 | 2145 |
| 107 | 2146 void code_drgvar(int e2,int d,int freg) |
| 82 | 2147 { |
| 109 | 2148 printf("\t%s %s\n",fload(d),((NMTBL*)cadr(e2))->nm); |
| 82 | 2149 } |
| 81 | 2150 |
| 2151 | |
| 107 | 2152 void code_drlvar(int e2,int d,int freg) |
| 82 | 2153 { |
| 119 | 2154 printf("\t%s %d(%%ebp)\n",fload(d),lvar(e2)); |
| 82 | 2155 } |
| 2156 | |
| 287 | 2157 void code_cmp_drgvar(int e2,int reg,int d,int label,int cond) |
| 82 | 2158 { |
| 109 | 2159 printf("\tfcomp %s\n",((NMTBL*)cadr(e2))->nm); |
| 287 | 2160 jcond(label,cond); |
| 82 | 2161 } |
| 2162 | |
| 287 | 2163 void code_cmp_drlvar(int e2,int reg,int d,int label,int cond) |
| 82 | 2164 { |
| 119 | 2165 printf("\tfcomp %d(%%ebp)\n",lvar(e2)); |
| 287 | 2166 jcond(label,cond); |
| 82 | 2167 } |
| 2168 | |
| 225 | 2169 void dtosop(int op,int reg,int e1) |
| 94 | 2170 { |
| 82 | 2171 switch(op) { |
| 133 | 2172 case FADD: |
| 82 | 2173 case DADD: printf("\tfaddp %%st,%%st(1)\n"); break; |
| 133 | 2174 case FSUB: |
| 85 | 2175 case DSUB: printf("\tfsubp %%st,%%st(1)\n"); break; |
| 133 | 2176 case FDIV: |
| 85 | 2177 case DDIV: printf("\tfdivp %%st,%%st(1)\n"); break; |
| 133 | 2178 case FMUL: |
| 82 | 2179 case DMUL: printf("\tfmulp %%st,%%st(1)\n"); break; |
| 133 | 2180 case FCMP: |
| 89 | 2181 case DCMP: |
| 82 | 2182 printf("\tfucompp\n"); |
| 2183 printf("\tfnstsw\t%%ax\n"); | |
| 2184 break; | |
| 2185 } | |
| 2186 } | |
| 81 | 2187 |
| 83 | 2188 void |
| 225 | 2189 code_dassop(int op,int reg,int d) { |
| 83 | 2190 /* we have lvalue in creg, applied floating value is in %st(0) */ |
| 102 | 2191 emit_dpop(d); /* do nothing for 387 */ |
| 83 | 2192 printf("\t%s (%s)\n",fload(d),register_name(creg,0)); |
| 225 | 2193 dtosop(op,reg,0); |
| 83 | 2194 printf("\t%s (%s)\n",fstore(d),register_name(creg,0)); |
| 2195 } | |
| 2196 | |
| 2197 void | |
| 219 | 2198 code_register_dassop(int reg,int op,int d) { |
| 2199 error(-1); | |
| 2200 } | |
| 2201 | |
| 2202 void | |
| 107 | 2203 code_dpreinc(int e1,int e2,int d,int freg) { |
| 83 | 2204 g_expr(e2); |
| 2205 printf("\t%s (%s)\n",fload(d),register_name(creg,0)); | |
| 2206 printf("\tfld1\n"); | |
| 87 | 2207 if (caddr(e1)>0) |
| 83 | 2208 printf("\tfaddp %%st,%%st(1)\n"); |
| 2209 else | |
| 2210 printf("\tfsubrp %%st,%%st(1)\n"); | |
| 2211 printf("\t%s (%s)\n",fstore(d),register_name(creg,0)); | |
| 2212 } | |
| 2213 | |
| 2214 void | |
| 107 | 2215 code_dpostinc(int e1,int e2,int d,int freg) { |
| 83 | 2216 g_expr(e2); |
| 2217 printf("\t%s (%s)\n",fload(d),register_name(creg,0)); | |
| 2218 if (use) | |
| 86 | 2219 printf("\t%s (%s)\n",fload(d),register_name(creg,0)); |
| 83 | 2220 printf("\tfld1\n"); |
| 87 | 2221 if (caddr(e1)>0) |
| 83 | 2222 printf("\tfaddp %%st,%%st(1)\n"); |
| 2223 else | |
| 2224 printf("\tfsubrp %%st,%%st(1)\n"); | |
| 87 | 2225 printf("\t%s (%s)\n",(use?fstore_u(d):fstore(d)),register_name(creg,0)); |
| 83 | 2226 } |
| 2227 | |
| 291 | 2228 #define COND_BRANCH 1 |
| 2229 #define COND_VALUE 2 | |
| 2230 | |
| 2231 int | |
| 2232 drexpr0(int e1, int e2,int l1, int op,int cond,int reg,int mode) | |
| 84 | 2233 { |
| 291 | 2234 char *s; |
| 236 | 2235 if (!cond) { |
| 230 | 2236 switch(op) { |
| 236 | 2237 case FOP+GT: |
| 291 | 2238 return drexpr0(e2,e1,l1,FOP+GE,1,reg,mode); |
| 236 | 2239 case FOP+GE: |
| 291 | 2240 return drexpr0(e2,e1,l1,FOP+GT,1,reg,mode); |
| 236 | 2241 case FOP+EQ: |
| 2242 op=FOP+NEQ; break; | |
| 2243 case FOP+NEQ: | |
| 2244 op=FOP+EQ; break; | |
| 2245 case DOP+GT: | |
| 291 | 2246 return drexpr0(e2,e1,l1,DOP+GE,1,reg,mode); |
| 236 | 2247 case DOP+GE: |
| 291 | 2248 return drexpr0(e2,e1,l1,DOP+GT,1,reg,mode); |
| 236 | 2249 case DOP+EQ: |
| 2250 op=DOP+NEQ; break; | |
| 2251 case DOP+NEQ: | |
| 2252 op=DOP+EQ; break; | |
| 291 | 2253 default: return 0; |
| 230 | 2254 } |
| 2255 } | |
| 291 | 2256 s = "e"; |
| 84 | 2257 switch(op) { |
| 2258 case DOP+GE: | |
| 133 | 2259 case FOP+GE: |
| 291 | 2260 g_expr(list3(DCMP,e1,e2)); |
| 84 | 2261 printf("\ttestb\t$5,%%ah\n"); |
| 2262 break; | |
| 2263 case DOP+GT: | |
| 133 | 2264 case FOP+GT: |
| 291 | 2265 g_expr(list3(DCMP,e1,e2)); |
| 84 | 2266 printf("\ttestb\t$69,%%ah\n"); |
| 2267 break; | |
| 2268 case DOP+EQ: | |
| 133 | 2269 case FOP+EQ: |
| 291 | 2270 g_expr(list3(DCMP,e1,e2)); |
| 84 | 2271 printf("\tandb\t$69,%%ah\n"); |
| 2272 printf("\txorb\t$64,%%ah\n"); | |
| 2273 break; | |
| 2274 case DOP+NEQ: | |
| 133 | 2275 case FOP+NEQ: |
| 291 | 2276 g_expr(list3(DCMP,e1,e2)); |
| 84 | 2277 printf("\tandb\t$69,%%ah\n"); |
| 2278 printf("\txorb\t$64,%%ah\n"); | |
| 291 | 2279 s = "ne"; |
| 84 | 2280 break; |
| 291 | 2281 default: |
| 2282 return 0; | |
| 84 | 2283 } |
| 291 | 2284 if (mode==COND_BRANCH) { |
| 2285 printf("\tj%s\t_%d\n",s,l1); | |
| 2286 } else { | |
| 2287 use_int(reg); use_data_reg(reg,0); | |
| 2288 printf("\tset%s\t%s\n",s,register_name(reg,1)); | |
| 2289 printf("\tmovzbl\t%s,%s\n", | |
| 2290 register_name(reg,1),register_name(reg,0)); | |
| 2291 } | |
| 2292 return 1; | |
| 84 | 2293 } |
| 2294 | |
| 291 | 2295 void |
| 2296 drexpr(int e1, int e2,int l1, int op,int cond) | |
| 2297 { | |
| 2298 drexpr0(e1, e2,l1, op,cond,USE_CREG,COND_BRANCH); | |
| 2299 } | |
| 2300 | |
| 2301 static int | |
| 2302 drexpr_bool(int e1, int reg) | |
| 2303 { | |
| 2304 return drexpr0(cadr(e1), caddr(e1),0, car(e1),1,reg,COND_VALUE); | |
| 2305 } | |
| 2306 | |
| 2307 | |
| 94 | 2308 void |
| 138 | 2309 code_dregister(int e2,int freg,int d) |
| 94 | 2310 { |
| 2311 error(-1); | |
| 2312 } | |
| 2313 | |
| 138 | 2314 void |
| 287 | 2315 code_cmp_dregister(int e2,int d,int label,int cond) |
| 94 | 2316 { |
| 235 | 2317 if (e2!=USE_CREG) |
| 2318 error(-1); | |
| 236 | 2319 printf("\tfldz\n"); |
| 235 | 2320 printf("\tfucompp\n"); |
| 2321 printf("\tfnstsw\t%%ax\n"); | |
| 2322 printf("\tandb\t$69,%%ah\n"); | |
| 2323 printf("\txorb\t$64,%%ah\n"); | |
| 287 | 2324 jcond(label,cond); |
| 82 | 2325 } |
| 81 | 2326 |
| 97 | 2327 int pop_fregister() |
| 82 | 2328 { |
| 94 | 2329 if (freg_sp<0) { error(-1); return -1;} |
| 2330 printf("# fpop: %d\n",freg_sp-1); | |
| 2331 return freg_stack[--freg_sp]; | |
| 82 | 2332 } |
| 81 | 2333 |
| 94 | 2334 int |
| 138 | 2335 emit_dpop(int d) |
| 94 | 2336 { |
| 2337 int xreg; | |
| 97 | 2338 if ((xreg=pop_fregister())==-1) { |
| 94 | 2339 } else if (xreg<= -REG_LVAR_OFFSET) { |
| 119 | 2340 code_drlvar(REG_LVAR_OFFSET+xreg,1,freg); |
| 117 | 2341 free_lvar(xreg+REG_LVAR_OFFSET); |
| 94 | 2342 /* pushed order is reversed. We don't need this for comutable |
| 2343 operator, but it is ok to do this. */ | |
| 2344 printf("\tfxch\t%%st(1)\n"); | |
| 2345 } | |
| 2346 return xreg; | |
| 2347 } | |
| 2348 | |
| 2349 | |
| 138 | 2350 void emit_dpop_free(int e1,int d) |
| 82 | 2351 { |
| 2352 } | |
| 81 | 2353 |
| 133 | 2354 void emit_dpush(int type) |
| 82 | 2355 { |
| 119 | 2356 if (freg_sp>=MAX_FPU_STACK) code_save_fstacks(); |
| 94 | 2357 if (freg_sp>MAX_MAX) error(-1); |
| 107 | 2358 freg_stack[freg_sp++]=-1; |
| 94 | 2359 printf("# fpush:%d\n",freg_sp); |
| 2360 } | |
| 2361 | |
| 195 | 2362 #endif |
| 2363 | |
| 94 | 2364 void |
| 2365 code_save_stacks() | |
| 2366 { | |
| 2367 /* temporal registers or stacks in fpu are saved in local variable */ | |
| 2368 int xreg,sp,screg; | |
| 2369 sp=reg_sp; | |
| 2370 while(sp-->0) { | |
| 2371 if ((xreg=reg_stack[sp])>=0) { | |
| 2372 screg=creg; | |
| 2373 if(creg!=xreg) { | |
| 2374 if (xreg!=dreg) free_register(xreg); | |
| 2375 creg = xreg; | |
| 2376 } | |
| 2377 code_assign_lvar( | |
| 245 | 2378 (reg_stack[sp]=new_lvar(SIZE_OF_INT)),creg,0); |
| 94 | 2379 reg_stack[sp]= reg_stack[sp]-REG_LVAR_OFFSET; |
| 2380 regv[xreg]=0; | |
| 2381 creg=screg; | |
| 2382 } | |
| 2383 } | |
| 107 | 2384 } |
| 2385 | |
| 195 | 2386 #if FLOAT_CODE |
| 107 | 2387 void |
| 2388 code_save_fstacks() | |
| 2389 { | |
| 127 | 2390 int xreg,sp,uses; |
| 2391 uses = use; use = 0; | |
| 94 | 2392 sp=freg_sp; |
| 2393 while(sp-->0) { | |
| 2394 if ((xreg=freg_stack[sp])==-1) { | |
| 2395 code_dassign_lvar( | |
| 245 | 2396 (freg_stack[sp]=new_lvar(SIZE_OF_DOUBLE)),freg,1); |
| 94 | 2397 freg_stack[sp]= freg_stack[sp]-REG_LVAR_OFFSET; |
| 2398 } | |
| 2399 } | |
| 127 | 2400 use = uses; |
| 82 | 2401 } |
| 195 | 2402 #endif |
| 2403 | |
| 2404 | |
| 2405 | |
| 2406 #if LONGLONG_CODE | |
| 2407 | |
| 2408 | |
| 2409 /* 64bit int part */ | |
| 2410 | |
| 237 | 2411 static void |
| 2412 pcond(char *s,int l1) | |
| 195 | 2413 { |
| 237 | 2414 printf("\tj%s\t_%d\n",s,l1); |
| 195 | 2415 } |
| 2416 | |
| 240 | 2417 void |
| 2418 lrexpr(int e1, int e2,int l1, int op,int cond) | |
| 195 | 2419 { |
| 280 | 2420 int l2; |
| 2421 code_save_stacks(); | |
| 237 | 2422 g_expr(e1); |
| 2423 emit_lpush(); | |
| 2424 g_expr(e2); | |
| 280 | 2425 // we are sure %ecx,%ebx is free |
| 2426 printf("\tpopl %%ecx\n"); // LSW | |
| 2427 printf("\tpopl %%ebx\n"); // MSW | |
| 2428 printf("\tsubl %%edx,%%ebx\n"); | |
| 2429 l2 = fwdlabel(); | |
| 2430 // cond==0 jump on false condtion ( if(x) => rexpr(.. cond=0 ...) ) | |
| 237 | 2431 switch(op) { |
| 2432 case LOP+GT: | |
| 2433 case LOP+GE: | |
| 280 | 2434 pcond(code_gt(1),cond?l1:l2); |
| 2435 pcond(code_eq(0),cond?l2:l1); | |
| 2436 break; | |
| 2437 case LOP+UGT: | |
| 2438 case LOP+UGE: | |
| 2439 pcond(code_ugt(1),cond?l1:l2); | |
| 2440 pcond(code_eq(0), cond?l2:l1); | |
| 2441 break; | |
| 237 | 2442 case LOP+EQ: |
| 280 | 2443 pcond(code_eq(0),(cond?l2:l1)); |
| 2444 pcond(code_eq(cond),l1); | |
| 2445 break; | |
| 237 | 2446 case LOP+NEQ: |
| 280 | 2447 pcond(code_eq(0),(cond?l1:l2)); |
| 2448 pcond(code_eq(!cond),l1); | |
| 2449 break; | |
| 237 | 2450 default: |
| 2451 error(-1); | |
| 2452 } | |
| 280 | 2453 printf("\tsubl %%eax,%%ecx\n"); |
| 2454 switch(op) { | |
| 2455 case LOP+GT: pcond(code_gt(cond), l1); break; | |
| 2456 case LOP+GE: pcond(code_ge(cond), l1); break; | |
| 2457 case LOP+UGT: pcond(code_ugt(cond), l1); break; | |
| 2458 case LOP+UGE: pcond(code_uge(cond), l1); break; | |
| 2459 } | |
| 2460 fwddef(l2); | |
| 195 | 2461 } |
| 2462 | |
| 2463 int emit_lpop() | |
| 2464 { | |
| 237 | 2465 return 0; |
| 195 | 2466 } |
| 2467 | |
| 2468 void code_lregister(int e2,int reg) | |
| 2469 { | |
| 238 | 2470 use_longlong(reg); |
| 239 | 2471 if (reg!=REG_L) { |
| 240 | 2472 printf("\tmovl %%esi,%s\n",l_eax(reg)); |
| 239 | 2473 printf("\tmovl %%edi,%s\n",l_edx(reg)); |
| 2474 } | |
| 195 | 2475 } |
| 2476 | |
| 287 | 2477 void code_cmp_lregister(int reg,int label,int cond) |
| 195 | 2478 { |
| 238 | 2479 char *crn; |
| 2480 use_int(reg); | |
| 2481 crn = register_name(reg,0); | |
| 239 | 2482 printf("\tmovl %%esi,%s\n",crn); |
| 2483 printf("\torl %%edi,%s\n",crn); | |
| 238 | 2484 printf("\ttestl %s,%s\n",crn,crn); |
| 287 | 2485 jcond(label,cond); |
| 195 | 2486 } |
| 2487 | |
| 287 | 2488 void code_cmp_lrgvar(int e1,int e2,int label,int cond) |
| 195 | 2489 { |
| 237 | 2490 char *n,*crn; |
| 2491 n = ((NMTBL*)cadr(e1))->nm; | |
| 2492 use_int(e2); | |
| 2493 crn = register_name(e2,0); | |
| 2494 printf("\tmovl %s,%s\n",n,crn); | |
| 2495 printf("\torl %s+4,%s\n",n,crn); | |
| 238 | 2496 printf("\ttestl %s,%s\n",crn,crn); |
| 287 | 2497 jcond(label,cond); |
| 195 | 2498 } |
| 2499 | |
| 287 | 2500 void code_cmp_lrlvar(int e1,int e2,int label,int cond) |
| 195 | 2501 { |
| 237 | 2502 char *crn; |
| 2503 use_int(e2); | |
| 2504 crn = register_name(e2,0); | |
| 239 | 2505 printf("\tmovl %d(%%ebp),%s\n",lvar(e1),crn); |
| 2506 printf("\torl %d(%%ebp),%s\n",lvar(e1)+4,crn); | |
| 2507 printf("\ttestl %s,%s\n",crn,crn); | |
| 287 | 2508 jcond(label,cond); |
| 195 | 2509 } |
| 2510 | |
| 2511 void code_lassign(int e1,int e2) | |
| 2512 { | |
| 237 | 2513 char *rn; |
| 2514 // e1 = e2 | |
| 2515 use_longlong(e2); | |
| 239 | 2516 rn = register_name(e1,0); |
| 2517 printf("\tmovl %s,(%s)\n",l_eax(e2),rn); | |
| 2518 printf("\tmovl %s,4(%s)\n",l_edx(e2),rn); | |
| 195 | 2519 } |
| 2520 | |
| 2521 void code_lassign_gvar(int e1,int e2) | |
| 2522 { | |
| 239 | 2523 char *n; |
| 237 | 2524 n = ((NMTBL*)cadr(e1))->nm; |
| 2525 use_longlong(e2); | |
| 239 | 2526 printf("\tmovl %s,%s\n",l_eax(e2),n); |
| 2527 printf("\tmovl %s,%s+4\n",l_edx(e2),n); | |
| 195 | 2528 } |
| 2529 | |
| 2530 void code_lassign_lvar(int e1,int e2) | |
| 2531 { | |
| 237 | 2532 use_longlong(e2); |
| 239 | 2533 printf("\tmovl %s,%d(%%ebp)\n",l_eax(e2),lvar(e1)); |
| 2534 printf("\tmovl %s,%d(%%ebp)\n",l_edx(e2),lvar(e1)+4); | |
| 195 | 2535 } |
| 2536 | |
| 2537 void code_lassign_lregister(int e2,int reg) | |
| 2538 { | |
| 242 | 2539 // e2 = reg |
| 238 | 2540 use_longlong(reg); |
| 239 | 2541 if (e2!=reg) { |
| 242 | 2542 printf("\tmovl %s,%s\n",l_eax(reg),l_eax(e2)); |
| 2543 printf("\tmovl %s,%s\n",l_edx(reg),l_edx(e2)); | |
| 239 | 2544 } |
| 237 | 2545 } |
| 195 | 2546 |
| 237 | 2547 void |
| 2548 code_lconst(int e1,int creg) | |
| 2549 { | |
| 2550 use_longlong(creg); | |
| 239 | 2551 printf("\tmovl $%d,%s\n",code_l1(lcadr(e1)),l_eax(creg)); |
| 2552 printf("\tmovl $%d,%s\n",code_l2(lcadr(e1)),l_edx(creg)); | |
| 195 | 2553 } |
| 2554 | |
| 212 | 2555 void code_lneg(int e1) |
| 195 | 2556 { |
| 239 | 2557 use_longlong(e1); |
| 2558 printf("\tnegl %s\n",l_eax(e1)); | |
| 2559 printf("\tadcl $0,%s\n",l_edx(e1)); | |
| 2560 printf("\tnegl %s\n",l_edx(e1)); | |
| 195 | 2561 } |
| 2562 | |
| 2563 void code_lrgvar(int e1,int e2) | |
| 2564 { | |
| 239 | 2565 char *n; |
| 237 | 2566 n = ((NMTBL*)cadr(e1))->nm; |
| 2567 use_longlong(e2); | |
| 239 | 2568 printf("\tmovl %s,%s\n",n,l_eax(e2)); |
| 2569 printf("\tmovl %s+4,%s\n",n,l_edx(e2)); | |
| 195 | 2570 } |
| 2571 | |
| 2572 void code_lrlvar(int e1,int e2) | |
| 2573 { | |
| 237 | 2574 use_longlong(e2); |
| 239 | 2575 printf("\tmovl %d(%%ebp),%s\n",lvar(e1),l_eax(e2)); |
| 2576 printf("\tmovl %d(%%ebp),%s\n",lvar(e1)+4,l_edx(e2)); | |
| 195 | 2577 } |
| 2578 | |
| 242 | 2579 #define check_lreg(reg) if (reg==REG_L) code_lassign_lregister(reg,REG_LCREG) |
| 239 | 2580 |
| 240 | 2581 void |
| 2582 ltosop(int op,int reg,int e2) | |
| 195 | 2583 { |
| 237 | 2584 char *opl,*oph,*call; |
| 2585 int lb; | |
| 195 | 2586 |
| 239 | 2587 // e2 (operand) is on the top of the stack |
| 237 | 2588 use_longlong(reg); |
| 2589 opl = 0; call=0; | |
| 2590 | |
| 2591 switch(op) { | |
| 2592 case LLSHIFT: | |
| 2593 case LULSHIFT: | |
| 239 | 2594 printf("\tmovl %%ecx,4(%%esp)\n"); |
| 2595 printf("\tpopl %%ecx\n"); | |
| 237 | 2596 printf("\tshldl %%eax,%%edx\n"); |
| 2597 printf("\tsall %%cl,%%eax\n"); | |
| 2598 printf("\ttestb $32,%%cl\n"); | |
| 2599 printf("\tje\t_%d\n",(lb=fwdlabel())); | |
| 2600 printf("\tmovl %%eax,%%edx\n"); | |
| 2601 printf("\txorl %%eax,%%eax\n"); | |
| 2602 fwddef(lb); | |
| 2603 printf("\tpopl %%ecx\n"); | |
| 242 | 2604 check_lreg(reg); |
| 237 | 2605 return; |
| 2606 case LRSHIFT: | |
| 239 | 2607 printf("\tmovl %%ecx,4(%%esp)\n"); |
| 2608 printf("\tpopl %%ecx\n"); | |
| 240 | 2609 printf("\tshrdl %%edx,%%eax\n"); |
| 237 | 2610 printf("\tsarl %%cl,%%eax\n"); |
| 2611 printf("\ttestb $32,%%cl\n"); | |
| 2612 printf("\tje\t_%d\n",(lb=fwdlabel())); | |
| 2613 printf("\tmovl %%edx,%%eax\n"); | |
| 2614 printf("\tsarl $31,%%edx\n"); | |
| 2615 fwddef(lb); | |
| 2616 printf("\tpopl %%ecx\n"); | |
| 242 | 2617 check_lreg(reg); |
| 237 | 2618 return; |
| 2619 case LURSHIFT: | |
| 239 | 2620 printf("\tmovl %%ecx,4(%%esp)\n"); |
| 2621 printf("\tpopl %%ecx\n"); | |
| 240 | 2622 printf("\tshrdl %%edx,%%eax\n"); |
| 237 | 2623 printf("\tshrl %%cl,%%eax\n"); |
| 2624 printf("\ttestb $32,%%cl\n"); | |
| 2625 printf("\tje\t_%d\n",(lb=fwdlabel())); | |
| 2626 printf("\tmovl %%edx,%%eax\n"); | |
| 2627 printf("\txorl %%edx,%%edx\n"); | |
| 2628 fwddef(lb); | |
| 2629 printf("\tpopl %%ecx\n"); | |
| 242 | 2630 check_lreg(reg); |
| 237 | 2631 return; |
| 2632 } | |
| 2633 switch(op) { | |
| 239 | 2634 case LADD: opl="addl";oph="adcl"; break; |
| 2635 case LSUB: opl="subl";oph="sbbl"; break; | |
| 237 | 2636 case LBAND: opl=oph="andl"; break; |
| 2637 case LEOR: opl=oph="xorl"; break; | |
| 2638 case LBOR: opl=oph="orl"; break; | |
| 2639 case LMUL: | |
| 2640 case LUMUL: | |
| 239 | 2641 printf("\tpushl %%edx\n"); |
| 2642 printf("\tpushl %%eax\n"); | |
| 2643 printf("\tpushl %%ecx\n"); | |
| 242 | 2644 // 0 saved ecx |
| 237 | 2645 // 4 c_l |
| 2646 // 8 c_h | |
| 2647 // 12 o_l | |
| 2648 // 16 o_h | |
| 2649 printf("\tmull 12(%%esp)\n"); // c_l*o_l -> %edx,%eax | |
| 2650 printf("\tmovl 4(%%esp),%%ecx\n"); // c_l->%ecx | |
| 2651 printf("\timull 16(%%esp),%%ecx\n"); // c_l*o_h->%ecx | |
| 239 | 2652 printf("\taddl %%ecx,%%edx\n"); // %edx+%ecx->%edx |
| 237 | 2653 printf("\tmovl 8(%%esp),%%ecx\n"); // c_h->%ecx |
| 2654 printf("\timull 12(%%esp),%%ecx\n"); // c_h*o_l->%ecx | |
| 239 | 2655 printf("\taddl %%ecx,%%edx\n"); // %edx+%ecx->%edx |
| 237 | 2656 printf("\tpopl %%ecx\n"); |
| 242 | 2657 // printf("\taddl $8,%%esp\n"); |
| 2658 printf("\tlea 16(%%esp),%%esp\n"); | |
| 237 | 2659 return; |
| 2660 case LDIV: call="__divdi3"; break; | |
| 2661 case LUDIV: call="__udivdi3"; break; | |
| 2662 case LMOD: call="__moddi3"; break; | |
| 2663 case LUMOD: call="__umoddi3"; break; | |
| 2664 default: error(-1); | |
| 2665 } | |
| 2666 if (opl) { | |
| 2667 printf("\t%s (%%esp),%%eax\n\t%s 4(%%esp),%%edx\n",opl,oph); | |
| 242 | 2668 printf("\tlea 8(%%esp),%%esp\n"); |
| 2669 check_lreg(reg); | |
| 239 | 2670 } else if (call) { |
| 2671 printf("\tpushl %%edx\n"); | |
| 2672 printf("\tpushl %%eax\n"); | |
| 237 | 2673 printf("\tcall %s\n",call); |
| 242 | 2674 // printf("\taddl $8,%%esp\n"); |
| 2675 printf("\tlea 16(%%esp),%%esp\n"); | |
| 2676 check_lreg(reg); | |
| 239 | 2677 } else { |
| 2678 error(-1); | |
| 237 | 2679 } |
| 195 | 2680 } |
| 2681 | |
| 237 | 2682 int code_lconst_op_p(int op,int e) { |
| 240 | 2683 long long l; |
| 2684 if (car(e)==CONST) l = cadr(e); | |
| 2685 else if (car(e)==LCONST) l = lcadr(e); | |
| 2686 else return 0; | |
| 2687 | |
| 237 | 2688 switch(op) { |
| 2689 case LLSHIFT: | |
| 2690 case LULSHIFT: | |
| 2691 case LRSHIFT: | |
| 2692 case LURSHIFT: | |
| 2693 return (0<=l&&l<=32); | |
| 2694 case LADD: | |
| 2695 case LSUB: | |
| 239 | 2696 case LBAND: |
| 237 | 2697 case LEOR: |
| 2698 case LBOR: | |
| 2699 return 1; | |
| 2700 default: | |
| 2701 return 0; | |
| 2702 } | |
| 2703 } | |
| 2704 | |
| 2705 void loprtc(int op,int reg,int e) { | |
| 2706 char *opl,*oph; | |
| 240 | 2707 int vl; |
| 2708 int vh; | |
| 2709 long long l; | |
| 2710 | |
| 2711 if (car(e)==CONST) l = cadr(e); | |
| 2712 else if (car(e)==LCONST) l = lcadr(e); | |
| 2713 else error(-1); | |
| 2714 | |
| 2715 vl = code_l1(l); | |
| 2716 vh = code_l2(l); | |
| 237 | 2717 |
| 2718 use_longlong(reg); | |
| 2719 opl = 0; | |
| 2720 | |
| 2721 switch(op) { | |
| 2722 case LLSHIFT: | |
| 2723 case LULSHIFT: | |
| 286 | 2724 printf("\tshldl $%d,%s,%s\n",vl,l_eax(reg),l_edx(reg)); |
| 2725 printf("\tsall $%d,%s\n",vl,l_eax(reg)); | |
| 237 | 2726 return; |
| 2727 case LRSHIFT: | |
| 286 | 2728 printf("\tshrdl $%d,%s,%s\n",vl,l_edx(reg),l_eax(reg)); |
| 2729 printf("\tsarl $%d,%s\n",vl,l_edx(reg)); | |
| 237 | 2730 return; |
| 2731 case LURSHIFT: | |
| 286 | 2732 printf("\tshrdl $%d,%s,%s\n",vl,l_edx(reg),l_eax(reg)); |
| 2733 printf("\tshrl $%d,%s\n",vl,l_edx(reg)); | |
| 237 | 2734 return; |
| 2735 } | |
| 2736 switch(op) { | |
| 2737 case LADD: opl="addl";oph="adcl"; break; | |
| 239 | 2738 case LSUB: opl="subl";oph="sbbl"; break; |
| 237 | 2739 case LBAND: opl=oph="andl"; break; |
| 2740 case LEOR: opl=oph="xorl"; break; | |
| 2741 case LBOR: opl=oph="orl"; break; | |
| 2742 default: error(-1); | |
| 2743 } | |
| 286 | 2744 printf("\t%s $%d,%s\n\t%s $%d,%s\n",opl,vl,l_eax(reg),oph,vh,l_edx(reg)); |
| 237 | 2745 } |
| 213 | 2746 |
| 195 | 2747 void emit_lpop_free(int e1) |
| 2748 { | |
| 242 | 2749 // printf("\taddl $8,%%esp\n"); |
| 195 | 2750 } |
| 2751 | |
| 2752 void emit_lpush() | |
| 2753 { | |
| 241 | 2754 printf("\tpushl %%edx\n\tpushl %%eax\n"); |
| 195 | 2755 } |
| 2756 | |
| 239 | 2757 void code_i2ll(int reg) |
| 195 | 2758 { |
| 240 | 2759 int reg0 = USE_CREG; |
| 2760 use_register(creg,REG_EAX,1); | |
| 2761 regv[creg]=0; | |
| 2762 use_longlong(reg0); | |
| 237 | 2763 printf("\tcltd\n"); |
| 242 | 2764 check_lreg(reg); |
| 240 | 2765 lreg = creg = reg0; |
| 195 | 2766 } |
| 2767 | |
| 239 | 2768 void code_i2ull(int reg) |
| 195 | 2769 { |
| 239 | 2770 code_i2ll(reg); |
| 195 | 2771 } |
| 2772 | |
| 239 | 2773 void code_u2ll(int reg) |
| 195 | 2774 { |
| 240 | 2775 int reg0 = USE_CREG; |
| 2776 use_register(creg,REG_EAX,1); | |
| 2777 regv[creg]=0; | |
| 2778 use_longlong(reg0); | |
| 237 | 2779 printf("\txorl %%edx,%%edx\n"); |
| 242 | 2780 check_lreg(reg); |
| 240 | 2781 lreg = creg = reg0; |
| 195 | 2782 } |
| 2783 | |
| 239 | 2784 void code_u2ull(int reg) |
| 195 | 2785 { |
| 239 | 2786 code_u2ll(reg); |
| 195 | 2787 } |
| 2788 | |
| 239 | 2789 void code_ll2i(int reg) |
| 195 | 2790 { |
| 239 | 2791 use_int(reg); |
| 237 | 2792 if (virtual(REG_EAX)!=reg) |
| 2793 printf("\tmovl %%eax,%s\n",register_name(creg,0)); | |
| 195 | 2794 } |
| 2795 | |
| 239 | 2796 void code_ll2u(int reg) |
| 195 | 2797 { |
| 239 | 2798 code_ll2i(reg); |
| 195 | 2799 } |
| 2800 | |
| 239 | 2801 void code_ull2i(int reg) |
| 195 | 2802 { |
| 239 | 2803 code_ll2i(reg); |
| 195 | 2804 } |
| 2805 | |
| 239 | 2806 void code_ull2u(int reg) |
| 195 | 2807 { |
| 239 | 2808 code_ll2i(reg); |
| 195 | 2809 } |
| 2810 | |
| 2811 #if FLOAT_CODE | |
| 239 | 2812 void code_d2ll(int reg) |
| 195 | 2813 { |
| 239 | 2814 use_longlong(reg); |
| 237 | 2815 printf("\tsubl $40,%%esp\n"); |
| 2816 printf("\tfnstcw 2(%%esp)\n"); | |
| 2817 printf("\tmovw 2(%%esp),%%ax\n"); | |
| 2818 printf("\torw $3072,%%ax\n"); | |
| 2819 printf("\tmovw %%ax,0(%%esp)\n"); | |
| 2820 printf("\tfldcw 0(%%esp)\n"); | |
| 2821 printf("\tfistpll 12(%%esp)\n"); | |
| 2822 printf("\tfldcw 2(%%esp)\n"); | |
| 239 | 2823 printf("\tmovl 12(%%esp),%%eax\n"); |
| 2824 printf("\tmovl 16(%%esp),%%edx\n"); | |
| 237 | 2825 printf("\taddl $40,%%esp\n"); |
| 195 | 2826 } |
| 2827 | |
| 239 | 2828 void code_d2ull(int reg) |
| 195 | 2829 { |
| 239 | 2830 use_longlong(reg); |
| 237 | 2831 printf("\tsubl $16,%%esp\n"); |
| 2832 printf("\tfstpl (%%esp)\n"); | |
| 2833 printf("\tcall __fixunsdfdi\n"); | |
| 2834 printf("\taddl $16,%%esp\n"); | |
| 195 | 2835 } |
| 2836 | |
| 239 | 2837 void code_f2ll(int reg) |
| 195 | 2838 { |
| 239 | 2839 code_d2ll(reg); |
| 195 | 2840 } |
| 2841 | |
| 239 | 2842 void code_f2ull(int reg) |
| 195 | 2843 { |
| 239 | 2844 use_longlong(reg); |
| 237 | 2845 printf("\tsubl $16,%%esp\n"); |
| 242 | 2846 printf("\tfstps (%%esp)\n"); |
| 237 | 2847 printf("\tcall __fixunssfdi\n"); |
| 2848 printf("\taddl $16,%%esp\n"); | |
| 195 | 2849 } |
| 2850 | |
| 239 | 2851 void code_ll2d(int reg) |
| 195 | 2852 { |
| 237 | 2853 printf("\tsubl $8,%%esp\n"); |
| 2854 printf("\tmovl %%eax,(%%esp)\n"); | |
| 2855 printf("\tmovl %%edx,4(%%esp)\n"); | |
| 2856 printf("\tfildll (%%esp)\n"); | |
| 2857 printf("\taddl $8,%%esp\n"); | |
| 195 | 2858 } |
| 2859 | |
| 239 | 2860 void code_ll2f(int reg) |
| 195 | 2861 { |
| 239 | 2862 code_ll2d(reg); |
| 195 | 2863 } |
| 2864 | |
| 239 | 2865 void code_ull2d(int reg) |
| 195 | 2866 { |
| 239 | 2867 code_ll2d(reg); |
| 195 | 2868 } |
| 2869 | |
| 239 | 2870 void code_ull2f(int reg) |
| 195 | 2871 { |
| 239 | 2872 code_ll2d(reg); |
| 195 | 2873 } |
| 2874 | |
| 2875 #endif | |
| 2876 | |
| 2877 | |
| 2878 void code_lpreinc(int e1,int e2,int reg) | |
| 2879 { | |
| 238 | 2880 int dir = caddr(e1); |
| 2881 int creg0; | |
| 2882 char *crn; | |
| 2883 if (car(e2)==LREGISTER) { | |
| 2884 use_longlong(reg); | |
| 239 | 2885 printf("\taddl $%d,%%esi\n",dir); |
| 2886 printf("\tadcl $%d,%%edi\n",dir>0?0:-1); | |
| 2887 if (reg!=REG_L) { | |
| 2888 code_lregister(REG_L,reg); | |
| 2889 } | |
| 238 | 2890 return; |
| 2891 } | |
| 2892 g_expr(e2); | |
| 2893 crn = register_name(creg0=creg,0); | |
| 2894 printf("\taddl $%d,(%s)\n",dir,crn); | |
| 239 | 2895 printf("\tadcl $%d,4(%s)\n",dir>0?0:-1,crn); |
| 238 | 2896 use_longlong(reg); |
| 239 | 2897 lload(creg0,0,reg); |
| 195 | 2898 } |
| 2899 | |
| 2900 void code_lpostinc(int e1,int e2,int reg) | |
| 2901 { | |
| 238 | 2902 int dir = caddr(e1); |
| 2903 int creg0; | |
| 2904 char *crn; | |
| 2905 if (car(e2)==LREGISTER) { | |
| 2906 use_longlong(reg); | |
| 239 | 2907 if (reg!=REG_L) { |
| 2908 code_lregister(REG_L,reg); | |
| 2909 } | |
| 2910 printf("\taddl $%d,%%esi\n",dir); | |
| 2911 printf("\tadcl $%d,%%edi\n",dir>0?0:-1); | |
| 238 | 2912 return; |
| 2913 } | |
| 2914 g_expr(e2); | |
| 2915 crn = register_name(creg0=creg,0); | |
| 2916 printf("\taddl $%d,(%s)\n",dir,crn); | |
| 239 | 2917 printf("\tadcl $%d,4(%s)\n",dir>0?0:-1,crn); |
| 238 | 2918 use_longlong(reg); |
| 239 | 2919 lload(creg0,0,reg); |
| 2920 printf("\taddl $%d,%s\n",-dir,l_eax(reg)); | |
| 2921 printf("\tadcl $%d,%s\n",-dir>0?0:-1,l_edx(reg)); | |
| 195 | 2922 } |
| 2923 | |
| 225 | 2924 void code_lassop(int op,int reg) |
| 195 | 2925 { |
| 238 | 2926 error(-1); |
| 195 | 2927 } |
| 2928 | |
| 219 | 2929 void |
| 2930 code_register_lassop(int reg,int op) { | |
| 238 | 2931 error(-1); |
| 219 | 2932 } |
| 2933 | |
| 195 | 2934 |
| 2935 #endif | |
| 81 | 2936 |
| 301 | 2937 |
| 2938 | |
| 2939 | |
| 2940 | |
| 2941 #if CASE_CODE | |
| 2942 | |
| 2943 int | |
| 2944 code_table_jump_p() { return 1; } | |
| 2945 | |
| 2946 void | |
| 302 | 2947 code_table_jump(int l,int csvalue,int delta,int max,int min,int dlabel) |
| 301 | 2948 { |
| 2949 char *crn; | |
| 2950 use_register(creg,csvalue,0); | |
| 2951 crn = register_name(creg,0); | |
| 2952 printf("\tsubl\t$%d,%s\n",min,crn); | |
| 302 | 2953 printf("\tcmpl\t$%d,%s\n",max-min,crn); |
| 2954 printf("\tja\t_%d\n",dlabel); | |
| 2955 if (delta==1) { | |
| 2956 printf("\tjmp\t*_%d(,%s,4)\n",l,crn); | |
| 2957 return; | |
| 2958 } | |
| 2959 use_register(creg,REG_EAX,1); | |
| 2960 edx_setup(-1); | |
| 301 | 2961 switch(delta) { |
| 302 | 2962 case 2: |
| 2963 printf("\tmovl\t$1,%%edx\n"); | |
| 2964 printf("\tandl\t%%edx,%%eax\n"); | |
| 2965 printf("\tjne\t_%d\n",dlabel); | |
| 2966 printf("\tjmp\t*_%d(,%%eax,2)\n",l); break; | |
| 2967 case 4: | |
| 2968 printf("\tmovl\t$3,%%edx\n"); | |
| 2969 printf("\tandl\t%%edx,%%eax\n"); | |
| 2970 printf("\tjne\t_%d\n",dlabel); | |
| 2971 printf("\tjmp\t*_%d(%%eax)\n",l); break; | |
| 301 | 2972 default: |
| 302 | 2973 printf("\tmovl $%d,%%ecx\n",delta); |
| 2974 printf("\txor %%edx,%%edx\n\tdivl %%ecx\n"); | |
| 2975 printf("\tandl\t%%edx,%%edx\n"); | |
| 2976 printf("\tjne\t_%d\n",dlabel); | |
| 2977 printf("\tjmp\t*_%d(,%%eax,4)\n",l); break; | |
| 301 | 2978 } |
| 302 | 2979 edx_cleanup(); |
| 301 | 2980 } |
| 2981 | |
| 2982 void | |
| 2983 code_table_open(int l) | |
| 2984 { | |
| 2985 output_mode=DATA_EMIT_MODE; | |
| 2986 printf(" \t.section\t.rodata\n\t.align 4\n"); | |
| 2987 fwddef(l); | |
| 2988 } | |
| 2989 | |
| 2990 void | |
| 2991 code_table_value(int label,int table_top) | |
| 2992 { | |
| 2993 printf("\t.long _%d\n",label); | |
| 2994 } | |
| 2995 | |
| 2996 void | |
| 2997 code_table_close() | |
| 2998 { | |
| 2999 text_mode(); | |
| 3000 } | |
| 3001 | |
| 3002 #endif | |
| 3003 | |
| 3004 | |
| 61 | 3005 /* end */ |
| 195 | 3006 |