Mercurial > hg > CbC > old > device
annotate mc-code-ia32.c @ 243:c311c26e006a
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| author | kono |
|---|---|
| date | Thu, 06 May 2004 00:01:40 +0900 |
| parents | c68f618b71f9 |
| children | 39e28d6cfa56 |
| 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/", |
| 173 | 15 0 |
| 16 }; | |
| 17 | |
| 18 | |
| 94 | 19 #define SAVE_STACKS 1 |
| 20 | |
| 61 | 21 #define TEXT_EMIT_MODE 0 |
| 22 #define DATA_EMIT_MODE 1 | |
| 23 #define RODATA_EMIT_MODE 2 | |
| 24 | |
| 25 static int output_mode = TEXT_EMIT_MODE; | |
| 26 static int data_alignment = 0; | |
| 27 | |
| 224 | 28 static int creg; |
| 239 | 29 static int lreg; |
| 224 | 30 |
| 238 | 31 int code_lassop_p = 0; |
| 32 | |
| 119 | 33 int size_of_int = 4; |
| 165 | 34 int size_of_short = 2; |
| 119 | 35 int size_of_float = 4; |
| 36 int size_of_double = 8; | |
| 37 int size_of_longlong = 8; | |
| 38 int endian = 0; | |
| 239 | 39 static int MAX_REGISTER=6; /* intel386のレジスタを6つまで使う*/ |
| 119 | 40 #define REAL_MAX_REGISTER 8 /* intel386のレジスタが8つということ*/ |
| 239 | 41 static int MAX_DATA_REG=4; |
| 42 static int MAX_POINTER=3; | |
| 43 // static int MAX_REGISTGER_VAR=2; | |
| 44 // static int MAX_FREGISTER=1; | |
| 119 | 45 |
| 46 #define MAX_FPU_STACK 7 | |
| 239 | 47 #define REG_VAR 3 |
| 119 | 48 |
| 239 | 49 // static int MAX_INPUT_REGISTER_VAR = 0; |
| 50 static int MAX_CODE_INPUT_REGISTER_VAR = 2; | |
| 51 // static int MAX_INPUT_DREGISTER_VAR = 0; | |
| 52 // static int MAX_INPUT_FREGISTER_VAR = 0; | |
| 53 // static int MAX_CODE_INPUT_DREGISTER_VAR = 0; | |
| 61 | 54 |
| 239 | 55 static int reg_sp; /* REGister Stack-Pointer */ |
| 56 static int reg_stack[MAX_MAX]; /* 実際のレジスタの領域 */ | |
| 138 | 57 |
| 58 /* floating point registers */ | |
| 59 | |
| 239 | 60 static int freg_sp; /* floating point REGister Stack-Pointer */ |
| 61 static int freg_stack[MAX_MAX]; /* 実際のレジスタの領域 */ | |
| 62 | |
| 63 static int reg_var; | |
| 64 static int regvar[2]; | |
| 138 | 65 |
| 66 | |
| 61 | 67 /* |
| 128 | 68 -28 -8 local2 |
| 69 -24 -4 local1 | |
| 70 -20 8 arg3 | |
| 71 -16 4 arg2 | |
| 72 -12 0 arg1 | |
| 73 local2 -20 4 -8 (%edi) | |
| 74 local1 <-- -16 0 local variable -4 (%esi) | |
| 61 | 75 %edi -12 <- disp_offset %ebp |
| 76 %esi -8 | |
| 77 %ebx -4 | |
| 78 %ebp = %esp 0 | |
| 79 %eip 4 <- arg_offset | |
| 80 arg1 8 0 | |
| 81 arg2 12 4 | |
| 82 see enter/enter1/leave see code_enter | |
| 83 */ | |
| 239 | 84 static int arg_offset = 8; |
| 85 static int disp_offset = -12; | |
| 86 static int func_disp_offset = -12; | |
| 87 static int code_disp_offset = 0; | |
| 88 // static int jump_offset = 0; | |
| 61 | 89 |
| 119 | 90 static int code_disp_label; |
| 91 static int func_disp_label; | |
| 61 | 92 |
| 119 | 93 static int |
| 94 lvar(int l) | |
| 95 { | |
| 96 if (is_code(fnptr)) { | |
| 97 return l+code_disp_offset; | |
| 98 } else if (l<0) { | |
| 99 return l+disp_offset; | |
| 100 } else { | |
| 101 return l+arg_offset; | |
| 102 } | |
| 103 } | |
| 99 | 104 |
| 95 | 105 /* |
| 106 creg currrent virtual register | |
| 107 dreg spare virtual register | |
| 108 | |
| 109 rname[creg] currrent real register | |
| 110 rname[dreg] spare real register | |
| 111 | |
| 112 regs[] virtual register usage | |
| 113 regv[] value in virtual register flag | |
| 114 | |
| 115 reg_name[rname[creg]] | |
| 116 | |
| 117 freg current floating point register | |
| 118 fregv calue in floating point register | |
| 119 */ | |
| 120 | |
| 121 static int dreg; /* general temporal register */ | |
| 122 | |
| 239 | 123 #define REAL_MAX_LREGISTER 2 |
| 238 | 124 static int ia32regs[REAL_MAX_REGISTER+REAL_MAX_LREGISTER]; |
| 125 static int ia32regv[REAL_MAX_REGISTER+REAL_MAX_LREGISTER]; | |
| 126 static int ia32rname[REAL_MAX_REGISTER+REAL_MAX_LREGISTER]; | |
| 95 | 127 |
| 205 | 128 static int *regv = ia32regv; |
| 129 static int *regs = ia32regs; | |
| 95 | 130 static int *rname = ia32rname; |
| 131 | |
| 205 | 132 static int ia32fregs[1]; |
| 133 static int ia32fregv[1]; | |
| 95 | 134 |
| 205 | 135 static int freg; |
| 136 static int *fregv = ia32fregv; | |
| 137 static int *fregs = ia32fregs; | |
| 95 | 138 |
| 61 | 139 |
| 140 #define REG_EAX 0 | |
| 141 #define REG_EBX 1 | |
| 142 #define REG_ECX 2 | |
| 143 #define REG_EDX 3 | |
| 144 #define REG_ESI 4 | |
| 145 #define REG_EDI 5 | |
| 146 #define REG_EBP 6 | |
| 147 #define REG_ESP 7 | |
| 239 | 148 #define is_int_reg(reg) (reg<REG_EBP) |
| 149 #define REG_LCREG 8 | |
| 150 #define REG_L 9 | |
| 61 | 151 |
| 152 | |
| 153 #define DATA_REG 0 | |
| 154 #define POINTER_REG 3 | |
| 155 static char *reg_name[8]; | |
| 156 static char *reg_name_l[4]; | |
| 157 static char *reg_name_w[4]; | |
| 158 | |
| 93 | 159 static void use_register(int virt, int real, int move); |
| 160 static int virtual(int real); | |
| 235 | 161 static void shift(char *op, int reg,int creg); |
| 162 static void ld_indexx(int byte, int n, int xreg,int reg,int sign); | |
| 93 | 163 static void data_mode(char *name); |
| 237 | 164 static int edx_setup(int rreg); |
| 93 | 165 static void edx_cleanup(); |
| 166 static void local_table(void); | |
| 195 | 167 #if FLOAT_CODE |
| 93 | 168 static char * fload(int d); |
| 169 static int code_d1(double d); | |
| 170 static int code_d2(double d); | |
| 195 | 171 static void code_save_fstacks(); |
| 172 #endif | |
| 94 | 173 static void code_save_stacks(); |
| 82 | 174 |
| 235 | 175 #define use_int(reg) if (reg==-1) reg=use_int0() |
| 242 | 176 static int use_int0() { lreg = 0; if (!is_int_reg(creg)) { creg = virtual(REG_EBX); regs[creg]=1;} return creg; } |
| 239 | 177 |
| 178 #define use_longlong(reg) reg=use_longlong0(reg) | |
| 179 static int | |
| 180 use_longlong0(int reg) | |
| 181 { | |
| 182 int i; | |
| 183 if (reg==USE_CREG) | |
| 184 reg = REG_LCREG; | |
| 185 if (!lreg) { | |
| 186 code_save_stacks(); | |
| 187 // make edx,eax free | |
| 240 | 188 use_register(creg,REG_EBX,regv[creg]); |
| 189 use_register(dreg,REG_ECX,regv[dreg]); | |
| 239 | 190 for(i=0;i<reg_var;i++) |
| 191 use_register(regvar[i],REG_ESI+i,1); | |
| 192 } | |
| 240 | 193 creg = lreg = reg; |
| 239 | 194 return lreg; |
| 195 } | |
| 196 | |
| 197 char * | |
| 198 l_edx(int i) { | |
| 199 return i==REG_L?"%edi":"%edx"; | |
| 200 } | |
| 201 char * | |
| 202 l_eax(int i) { | |
| 203 return i==REG_L?"%esi":"%eax"; | |
| 204 } | |
| 205 | |
| 235 | 206 |
| 61 | 207 void |
| 208 code_init(void) | |
| 209 { | |
| 173 | 210 macro_define("__i386__ 1\n"); |
| 182 | 211 macro_define("__LITTLE_ENDIAN__ 1\n"); |
| 212 macro_define("__STDC__ 1\n"); | |
| 213 macro_define("size_t int\n"); | |
| 214 macro_define("__externsion__\n"); | |
| 215 macro_define("__flexarr\n"); | |
| 183 | 216 macro_define("__builtin_va_list int*\n"); |
| 217 macro_define("wchar_t int\n"); | |
| 235 | 218 // macro_define("__THROW\n"); |
| 219 macro_define("__gnuc_va_list int*\n"); | |
| 173 | 220 |
| 61 | 221 arg_offset = 8; |
| 222 func_disp_offset = -12; | |
| 223 disp_offset = -12; | |
| 224 size_of_int = 4; | |
| 225 endian = 0; | |
| 226 MAX_REGISTER=6; | |
| 227 MAX_DATA_REG=4; | |
| 228 MAX_POINTER=3; | |
| 229 MAX_REGISTER_VAR=2; | |
| 230 | |
| 231 reg_name[REG_EAX] = "%eax"; | |
| 232 reg_name[REG_EBX] = "%ebx"; | |
| 233 reg_name[REG_ECX] = "%ecx"; | |
| 234 reg_name[REG_EDX] = "%edx"; | |
| 235 reg_name[REG_ESI] = "%esi"; | |
| 236 reg_name[REG_EDI] = "%edi"; | |
| 237 reg_name[REG_EBP] = "%ebp"; | |
| 238 reg_name[REG_ESP] = "%esp"; | |
| 239 reg_name_l[REG_EAX] = "%al"; | |
| 240 reg_name_l[REG_EBX] = "%bl"; | |
| 241 reg_name_l[REG_ECX] = "%cl"; | |
| 242 reg_name_l[REG_EDX] = "%dl"; | |
| 243 reg_name_w[REG_EAX] = "%ax"; | |
| 244 reg_name_w[REG_EBX] = "%bx"; | |
| 245 reg_name_w[REG_ECX] = "%cx"; | |
| 246 reg_name_w[REG_EDX] = "%dx"; | |
| 247 | |
| 248 } | |
| 249 | |
| 250 char * | |
| 251 register_name(int i,int byte) | |
| 252 { | |
| 253 if (i<0) { | |
| 254 error(REG_ERR); | |
| 255 return "%eax"; | |
| 256 } | |
| 165 | 257 if (byte==1 && rname[i] <= REG_EDX) { |
| 61 | 258 return reg_name_l[rname[i]]; |
| 165 | 259 } else if (byte==size_of_short && rname[i] <= REG_EDX) { |
| 260 return reg_name_w[rname[i]]; | |
| 61 | 261 } else { |
| 168 | 262 return reg_name[rname[i]]; /* 0 or 4 means int */ |
| 61 | 263 } |
| 264 } | |
| 265 | |
| 235 | 266 /* |
| 147 | 267 int use_int(int i) { return i;} |
| 268 int use_float(int i) { return i;} | |
| 269 int use_double(int i) { return i;} | |
| 195 | 270 int use_longlong(int i) { return i; } |
| 235 | 271 */ |
| 195 | 272 |
| 147 | 273 |
| 61 | 274 void |
| 275 gexpr_code_init(void){ | |
| 276 use_register(creg,REG_EAX,0); | |
| 94 | 277 regv[creg]=0; |
| 61 | 278 regv[dreg]=0; |
| 279 } | |
| 280 | |
| 147 | 281 void |
| 282 code_gexpr(int e){ | |
| 283 } | |
| 284 | |
| 89 | 285 int |
| 286 get_register(void) | |
| 287 { /* 使われていないレジスタを調べる */ | |
| 288 int i; | |
| 289 for(i=0;i<MAX_REGISTER;i++) { | |
| 290 if (! regs[i]) { /* 使われていないなら */ | |
| 291 regs[i]=1; /* そのレジスタを使うことを宣言し */ | |
| 292 return i; /* その場所を表す番号を返す */ | |
| 293 } | |
| 294 } | |
| 295 return -1; /* 空いている場所がないなら、それを表す -1 を返す */ | |
| 296 } | |
| 297 | |
| 298 void | |
| 299 free_register(int i) { /* いらなくなったレジスタを開放 */ | |
| 300 regv[i]=regs[i]=0; | |
| 238 | 301 if(i==REAL_MAX_REGISTER) { |
| 239 | 302 regv[virtual(REG_ESI)]=regv[virtual(REG_EDI)]=0; |
| 238 | 303 } |
| 89 | 304 } |
| 305 | |
| 99 | 306 int |
| 126 | 307 get_input_register_var(int i,NMTBL *nptr,int is_code) |
| 99 | 308 { |
| 126 | 309 if (is_code) { |
| 310 if (i>=MAX_CODE_INPUT_REGISTER_VAR) return 0; | |
| 311 i = virtual(i+REG_ESI); | |
| 239 | 312 regs[i]=regv[i]=INPUT_REG; |
| 126 | 313 return list3(REGISTER,i,(int)nptr); |
| 314 } else { | |
| 315 return 0; | |
| 316 } | |
| 99 | 317 } |
| 103 | 318 |
| 99 | 319 int |
| 138 | 320 get_input_dregister_var(int i,NMTBL *nptr,int is_code,int d) |
| 99 | 321 { |
| 126 | 322 return 0; |
| 99 | 323 } |
| 324 | |
| 325 int | |
| 138 | 326 get_dregister(int d) |
| 99 | 327 { |
| 328 return -1; | |
| 329 } | |
| 330 | |
| 195 | 331 int |
| 332 get_lregister_var(NMTBL *n) | |
| 333 { | |
| 238 | 334 int h,l; |
| 335 h = virtual(REG_ESI); | |
| 336 l = virtual(REG_EDI); | |
| 337 if (regv[REAL_MAX_REGISTER]==0&®s[h]==0&®s[l]==0) { | |
| 239 | 338 regs[h]=regs[l]=REG_VAR; |
| 339 regv[h]=regv[l]=REG_VAR; | |
| 238 | 340 regv[REAL_MAX_REGISTER]=1; |
| 239 | 341 reg_var=2; regvar[0]=h; regvar[1]=l; |
| 240 | 342 return list2(LREGISTER,REG_L); |
| 238 | 343 } |
| 204 | 344 return list2(LVAR,new_lvar(size_of_longlong)); |
| 195 | 345 } |
| 346 | |
| 205 | 347 int |
| 348 get_lregister() | |
| 349 { | |
| 350 return -1; | |
| 351 } | |
| 352 | |
| 353 | |
| 89 | 354 int |
| 355 register_full(void) | |
| 356 { | |
| 357 int i; | |
| 358 for(i=0;i<MAX_REGISTER;i++) { | |
| 359 if (! regs[i]) { | |
| 360 return 0; | |
| 361 } | |
| 362 } | |
| 363 return 1; | |
| 364 } | |
| 365 | |
| 366 int | |
| 137 | 367 free_register_count(int d) |
| 89 | 368 { |
| 369 int i,count; | |
| 370 count = 0; | |
| 371 for(i=0;i<MAX_REGISTER;i++) { | |
| 372 if (! regs[i] && ! regv[i]) count++; | |
| 373 } | |
| 137 | 374 return d?0:count; |
| 89 | 375 } |
| 376 | |
| 377 void | |
| 378 free_all_register(void) | |
| 379 { | |
| 380 int i; | |
| 243 | 381 for(i=0;i<MAX_REGISTER+REAL_MAX_LREGISTER;i++) { |
| 89 | 382 regs[i]=regv[i]=0; |
| 383 } | |
| 384 creg = get_register(); | |
| 385 dreg = get_register(); | |
| 239 | 386 reg_var = 0; |
| 89 | 387 return; |
| 388 } | |
| 389 | |
| 390 | |
| 391 void | |
| 392 register_usage(char *s) | |
| 393 { | |
| 394 int i; | |
| 395 if (chk) return; | |
| 396 printf("# %d: %s:",lineno,s); | |
| 397 printf(" creg=%s dreg=%s ",register_name(creg,0),register_name(dreg,0)); | |
| 398 for(i=0;i<MAX_REGISTER;i++) { | |
| 399 printf("%d",regs[i]); | |
| 400 } | |
| 401 printf(":"); | |
| 402 for(i=0;i<MAX_REGISTER;i++) { | |
| 403 printf("%d",regv[i]); | |
| 404 } | |
| 405 #if 0 | |
| 406 printf(" regs_stack",register_name(creg,0),register_name(dreg,0)); | |
| 407 for(i=reg_sp;i>=0;i--) { | |
| 408 if(reg_stack[i]>=0) | |
| 409 printf(" %s",register_name(reg_stack[i],0)); | |
| 410 } | |
| 411 #endif | |
| 94 | 412 printf(" f:%d",freg_sp); |
| 89 | 413 printf("\n"); |
| 414 } | |
| 415 | |
| 109 | 416 void |
| 137 | 417 code_arg_register(NMTBL *fnptr) |
| 109 | 418 { |
| 137 | 419 int args = fnptr->dsp; |
| 420 NMTBL *n; | |
| 421 int reg_var = 0; | |
| 422 int freg_var = 0; | |
| 423 int type; | |
| 424 int reg; | |
| 425 int is_code0 = is_code(fnptr); | |
| 426 | |
| 427 while (args) { | |
| 428 /* process in reverse order */ | |
| 429 n = (NMTBL*)caddr(args); | |
| 430 type = n->ty; | |
| 431 if (scalar(type)) { | |
| 432 if ((reg = get_input_register_var(reg_var,n,is_code0))) { | |
| 433 n->sc = REGISTER; | |
| 434 n->dsp = cadr(reg); | |
| 435 regv[n->dsp]= 1; | |
| 436 regs[n->dsp]= INPUT_REG; | |
| 437 reg_var++; | |
| 438 cadddr(args)=size_of_int; /* why we need this? */ | |
| 439 } | |
| 440 } else if (type==FLOAT||type==DOUBLE) { | |
| 138 | 441 if ((reg = get_input_dregister_var(freg_var,n,is_code0,1))) { |
| 137 | 442 n->sc = DREGISTER; |
| 443 n->dsp = cadr(reg); | |
| 444 fregv[n->dsp]= 1; | |
| 445 fregs[n->dsp]= INPUT_REG; | |
| 446 freg_var++; | |
| 447 cadddr(args)=size(type); /* why we need this? */ | |
| 448 } | |
| 449 } | |
| 450 args = cadr(args); | |
| 451 } | |
| 109 | 452 } |
| 453 | |
| 89 | 454 void |
| 455 gexpr_init(void) | |
| 456 { | |
| 457 while(reg_sp > 0) { | |
| 94 | 458 if (reg_stack[--reg_sp]>=0) |
| 459 free_register(reg_stack[reg_sp]); | |
| 89 | 460 } |
| 94 | 461 freg_sp = 0; |
| 89 | 462 text_mode(); |
| 463 gexpr_code_init(); | |
| 464 register_usage("gexpr_init"); | |
| 465 } | |
| 466 | |
| 467 | |
| 468 void | |
| 469 emit_init(void) | |
| 470 { | |
| 471 int i; | |
| 472 for(i=0;i<MAX_REGISTER;i++) { regs[i]=0; regv[i]=0;rname[i]=i;} | |
| 473 free_all_register(); | |
| 474 reg_sp = 0; | |
| 94 | 475 freg_sp = 0; |
| 89 | 476 text_mode(); |
| 477 } | |
| 478 | |
| 479 int | |
| 480 virtual(int real) | |
| 481 { | |
| 482 int real_v,i; | |
| 483 real_v = -1; | |
| 484 for(i=0;i<MAX_REGISTER;i++) { | |
| 485 if (rname[i]==real) { | |
| 486 real_v=i; | |
| 487 break; | |
| 488 } | |
| 489 } | |
| 490 return real_v; | |
| 491 } | |
| 492 | |
| 493 int | |
| 494 pop_register(void) | |
| 495 { /* レジスタから値を取り出す */ | |
| 496 return reg_stack[--reg_sp]; | |
| 497 } | |
| 498 | |
| 499 void | |
| 500 emit_pop_free(int xreg) | |
| 501 { | |
| 159 | 502 if (xreg==dreg||xreg==creg) { |
| 89 | 503 regv[dreg]=0; |
| 98 | 504 } else if (xreg>=0) { |
| 89 | 505 free_register(xreg); |
| 506 } | |
| 507 } | |
| 508 | |
| 509 | |
| 61 | 510 int |
| 105 | 511 get_register_var(NMTBL *nptr) |
| 61 | 512 { |
| 513 int i; | |
| 235 | 514 for(i=REG_ESI;i<REG_EBP;i++) { |
| 61 | 515 if (! regs[i]) { /* 使われていないなら */ |
| 239 | 516 regs[i]=REG_VAR; /* そのレジスタを使うことを宣言し */ |
| 61 | 517 regv[i]=0; |
| 239 | 518 regvar[reg_var++]=i; |
| 105 | 519 return list3(REGISTER,i,(int)nptr); /* その場所を表す番号を返す */ |
| 61 | 520 } |
| 521 } | |
| 104 | 522 return list2(LVAR,new_lvar(size_of_int)); |
| 523 } | |
| 524 | |
| 525 int | |
| 138 | 526 get_dregister_var(NMTBL *nptr,int d) |
| 104 | 527 { |
| 138 | 528 return list2(LVAR,new_lvar(d?size_of_double:size_of_float)); |
| 137 | 529 } |
| 530 | |
| 61 | 531 void |
| 532 use_register(int virt, int real, int move) | |
| 533 { | |
| 534 int real_v; | |
| 535 char *move_op; | |
| 536 if (rname[virt]==real) | |
| 537 return; | |
| 538 real_v = virtual(real); | |
| 539 move_op = regs[real_v]?"\txchg %s,%s\n":"\tmovl %s,%s\n"; | |
| 540 if (move || (regv[real_v])) { | |
| 541 printf(move_op,reg_name[rname[virt]],reg_name[real]); | |
| 542 } | |
| 543 rname[real_v] = rname[virt]; | |
| 544 rname[virt] = real; | |
| 545 } | |
| 546 | |
| 547 void | |
| 548 use_pointer(int virt, int move) | |
| 549 { | |
| 550 int i; | |
| 551 if (rname[virt]>=POINTER_REG) | |
| 552 return; | |
| 553 for(i=POINTER_REG;i<MAX_REGISTER;i++) { | |
| 554 if (!regs[virtual(i)]) { | |
| 555 use_register(virt,i,move); | |
| 556 return; | |
| 557 } | |
| 558 } | |
| 559 /* we prefer EBX */ | |
| 560 use_register(virt,REG_EBX,move); | |
| 561 } | |
| 562 | |
| 563 void | |
| 564 use_data_reg(int virt, int move) | |
| 565 { | |
| 566 int i; | |
| 567 if (rname[virt]<MAX_DATA_REG) | |
| 568 return; | |
| 569 for(i=0;i<MAX_DATA_REG;i++) { | |
| 570 if (!regs[virtual(i)]) { | |
| 571 use_register(virt,i,move); | |
| 572 return; | |
| 573 } | |
| 574 } | |
| 575 /* we prefer EBX */ | |
| 576 use_register(virt,REG_EBX,move); | |
| 577 } | |
| 578 | |
| 579 | |
| 580 void | |
| 107 | 581 emit_push() |
| 61 | 582 { |
| 583 int new_reg; | |
| 584 new_reg = get_register(); | |
| 159 | 585 if (new_reg==creg) error(-1); |
| 61 | 586 if(new_reg<0) { /* もうレジスタがない */ |
| 83 | 587 if (reg_sp>=MAX_MAX) error(-1); |
| 61 | 588 reg_stack[reg_sp++] = -1; |
| 589 printf("\tpushl %s\n",register_name(creg,0)); | |
| 590 /* creg is used soon, don't regv[creg]=0 */ | |
| 591 } else { | |
| 592 reg_stack[reg_sp++] = creg; /* push するかわりにレジスタを使う */ | |
| 593 creg = new_reg; | |
| 594 regv[creg]=1; | |
| 595 } | |
| 596 } | |
| 597 | |
| 598 int | |
| 599 emit_pop(int type) | |
| 600 { | |
| 601 int xreg; | |
| 602 if ((xreg=pop_register())==-1) { | |
| 603 if (type==POINTER_REG) | |
| 604 use_pointer(dreg,0); | |
| 605 else if (type==DATA_REG) | |
| 606 use_data_reg(dreg,0); | |
| 607 if (regv[dreg]) { | |
| 608 printf("# emit_pop dreg conflict\n"); | |
| 94 | 609 error(-1); |
| 61 | 610 } |
| 611 printf("\tpopl %s\n",register_name(dreg,0)); | |
| 94 | 612 regv[dreg]=1; |
| 613 return dreg; | |
| 614 } else if (xreg<= -REG_LVAR_OFFSET) { | |
| 119 | 615 code_rlvar(xreg+REG_LVAR_OFFSET,dreg); |
| 117 | 616 free_lvar(xreg+REG_LVAR_OFFSET); |
| 94 | 617 regv[dreg]=1; |
| 618 return dreg; | |
| 619 } | |
| 61 | 620 return xreg; |
| 621 } | |
| 622 | |
| 186 | 623 int |
| 624 stack_top(int type) | |
| 625 { | |
| 626 int xreg; | |
| 627 if (type==INT) { | |
| 628 xreg = reg_stack[reg_sp]; | |
| 629 if (xreg<= -REG_LVAR_OFFSET) { | |
| 630 return list2(LVAR,REG_LVAR_OFFSET+xreg); | |
| 631 } else { | |
| 632 return list2(REGISTER,xreg); | |
| 633 } | |
| 634 } else { | |
| 635 xreg = freg_stack[freg_sp]; | |
| 636 if (xreg<= -REG_LVAR_OFFSET) { | |
| 637 return list2(LVAR,REG_LVAR_OFFSET+xreg); | |
| 187 | 638 } else { |
| 186 | 639 return list2(DREGISTER,xreg); |
| 640 } | |
| 641 } | |
| 642 return xreg; | |
| 643 } | |
| 644 | |
| 645 | |
| 646 | |
| 92 | 647 void |
| 648 code_label(int labelno) | |
| 649 { | |
| 650 printf("_%d:\n",labelno); | |
| 651 } | |
| 61 | 652 |
| 653 void | |
| 107 | 654 code_gvar(int e1,int creg) { |
| 235 | 655 use_int(creg); |
| 109 | 656 printf("\tmovl $%s,%s\n",((NMTBL*)cadr(e1))->nm,register_name(creg,0)); |
| 107 | 657 regv[creg]=1; |
| 61 | 658 } |
| 659 | |
| 660 | |
| 661 void | |
| 107 | 662 code_rgvar(int e1,int creg) { |
| 235 | 663 use_int(creg); |
| 109 | 664 printf("\tmovl %s,%s\n",((NMTBL*)cadr(e1))->nm,register_name(creg,0)); |
| 107 | 665 regv[creg]=1; |
| 61 | 666 } |
| 235 | 667 |
| 166 | 668 static char *cload(int sign,int sz) { return sz==1?(sign?"movsbl":"movzbl"):sz==size_of_short?(sign?"movswl":"movzwl"):"movl"; } |
| 235 | 669 |
| 61 | 670 void |
| 165 | 671 code_crgvar(int e1,int creg,int sign,int sz){ |
| 235 | 672 use_int(creg); |
| 165 | 673 printf("\t%s %s,%s\n",cload(sign,sz), |
| 163 | 674 ((NMTBL*)cadr(e1))->nm,register_name(creg,0)); |
| 107 | 675 regv[creg]=1; |
| 61 | 676 } |
| 677 | |
| 678 | |
| 679 void | |
| 107 | 680 code_lvar(int e2,int creg) { |
| 235 | 681 use_int(creg); |
| 119 | 682 printf("\tlea %d(%%ebp),%s\n",lvar(e2),register_name(creg,0)); |
| 107 | 683 regv[creg]=1; |
| 61 | 684 } |
| 685 | |
| 686 | |
| 687 void | |
| 107 | 688 code_register(int e2,int creg) { |
| 235 | 689 use_int(creg); |
| 61 | 690 printf("\tmovl %s,%s\n",register_name(e2,0),register_name(creg,0)); |
| 107 | 691 regv[creg]=1; |
| 61 | 692 } |
| 693 | |
| 694 | |
| 695 void | |
| 94 | 696 code_rlvar(int e2,int reg) { |
| 235 | 697 use_int(reg); |
| 119 | 698 printf("\tmovl %d(%%ebp),%s\n",lvar(e2),register_name(reg,0)); |
| 107 | 699 regv[creg]=1; |
| 61 | 700 } |
| 701 | |
| 702 | |
| 703 void | |
| 165 | 704 code_crlvar(int e2,int reg,int sign,int sz) { |
| 235 | 705 use_int(reg); |
| 165 | 706 printf("\t%s %d(%%ebp),%s\n",cload(sign,sz),lvar(e2),register_name(reg,0)); |
| 107 | 707 regv[creg]=1; |
| 61 | 708 } |
| 709 | |
| 710 | |
| 711 void | |
| 109 | 712 code_fname(NMTBL *n,int creg) { |
| 235 | 713 use_int(creg); |
| 109 | 714 printf("\tmovl $%s,%s\n",n->nm,register_name(creg,0)); |
| 107 | 715 regv[creg]=1; |
| 61 | 716 } |
| 717 | |
| 718 | |
| 719 void | |
| 107 | 720 code_const(int e2,int creg) { |
| 235 | 721 use_int(creg); |
| 61 | 722 printf("\tmovl $%d,%s\n",e2,register_name(creg,0)); |
| 107 | 723 regv[creg]=1; |
| 61 | 724 } |
| 725 | |
| 726 | |
| 727 void | |
| 107 | 728 code_neg(int creg) { |
| 235 | 729 use_int(creg); |
| 61 | 730 printf("\tnegl %s\n", register_name(creg,0)); |
| 731 } | |
| 732 | |
| 733 | |
| 734 void | |
| 107 | 735 code_not(int creg) { |
| 235 | 736 use_int(creg); |
| 61 | 737 printf("\tnotl %s\n", register_name(creg,0)); |
| 738 } | |
| 739 | |
| 740 | |
| 741 void | |
| 107 | 742 code_lnot(int creg) { |
| 61 | 743 char *xrn; |
| 235 | 744 use_int(creg); |
| 61 | 745 use_data_reg(creg,1); |
| 746 xrn = register_name(creg,1); | |
| 747 printf("\tcmpl $0,%s\n", register_name(creg,0)); | |
| 748 printf("\tsete %s\n", xrn); | |
| 749 printf("\tmovzbl %s,%s\n", xrn,register_name(creg,0)); | |
| 750 } | |
| 751 | |
| 752 void | |
| 168 | 753 code_preinc(int e1,int e2,int dir,int sign,int sz,int reg) { |
| 61 | 754 char *xrn; |
| 755 if (car(e2)==REGISTER) { | |
| 235 | 756 use_int(reg); |
| 168 | 757 printf("\taddl $%d,%s\n",dir,register_name(cadr(e2),0)); |
| 107 | 758 printf("\tmovl %s,%s\n",register_name(cadr(e2),0),register_name(reg,0)); |
| 759 regv[reg]=1; | |
| 61 | 760 return; |
| 761 } | |
| 762 g_expr(e2); | |
| 763 xrn = register_name(creg,0); | |
| 235 | 764 use_int(reg); |
| 168 | 765 printf("\t%s $%d,(%s)\n",(sz==1)?"addb":(sz==size_of_short)?"addw":"addl",dir,xrn); |
| 235 | 766 printf("\t%s (%s),%s\n",cload(sign,sz),xrn,register_name(reg,0)); |
| 61 | 767 } |
| 768 | |
| 769 | |
| 770 void | |
| 168 | 771 code_postinc(int e1,int e2,int dir,int sign,int sz,int reg) { |
| 61 | 772 char *xrn; |
| 773 if (car(e2)==REGISTER) { | |
| 235 | 774 use_int(reg); |
| 107 | 775 printf("\tmovl %s,%s\n",register_name(cadr(e2),0),register_name(reg,0)); |
| 168 | 776 printf("\taddl $%d,%s\n",dir,register_name(cadr(e2),0)); |
| 107 | 777 regv[reg]=1; |
| 61 | 778 return; |
| 779 } | |
| 780 g_expr(e2); | |
| 781 emit_push(); | |
| 782 xrn = register_name((e2=emit_pop(0)),0); | |
| 235 | 783 use_int(reg); |
| 784 printf("\t%s (%s),%s\n",cload(sign,sz),xrn,register_name(reg,0)); | |
| 168 | 785 printf("\t%s $%d,(%s)\n",(sz==1)?"addb":(sz==size_of_short)?"addw":"addl",dir,xrn); |
| 61 | 786 emit_pop_free(e2); |
| 787 } | |
| 788 | |
| 789 | |
| 790 | |
| 791 void | |
| 107 | 792 code_return(int creg) { |
| 235 | 793 use_int(creg); |
| 61 | 794 printf("\tleal _%d,%s\n",retcont,register_name(creg,0)); |
| 107 | 795 regv[creg]=1; |
| 61 | 796 } |
| 797 | |
| 798 | |
| 799 void | |
| 107 | 800 code_environment(int creg) { |
| 235 | 801 use_int(creg); |
| 61 | 802 printf("\tmovl %%ebp,%s\n",register_name(creg,0)); |
| 107 | 803 regv[creg]=1; |
| 61 | 804 } |
| 805 | |
| 806 | |
| 807 void | |
| 225 | 808 code_bool(int e1,int reg) { |
| 61 | 809 char *xrn; |
| 810 int e2,e3; | |
| 811 b_expr(e1,1,e2=fwdlabel(),1); /* including > < ... */ | |
| 235 | 812 use_int(reg); |
| 813 xrn = register_name(reg,0); | |
| 61 | 814 printf("\txorl %s,%s\n",xrn,xrn); |
| 815 jmp(e3=fwdlabel()); | |
| 816 fwddef(e2); | |
| 817 printf("\tmovl $1,%s\n",xrn); | |
| 818 fwddef(e3); | |
| 235 | 819 regv[reg]=1; |
| 61 | 820 } |
| 821 | |
| 822 char * | |
| 823 code_gt(int cond) { | |
| 824 return (cond?"g":"le"); | |
| 825 } | |
| 826 | |
| 827 char * | |
| 828 code_ugt(int cond) { | |
| 829 return (cond?"a":"be"); | |
| 830 } | |
| 831 | |
| 832 char * | |
| 833 code_ge(int cond) { | |
| 834 return (cond?"ge":"l"); | |
| 835 } | |
| 836 | |
| 837 char * | |
| 838 code_uge(int cond) { | |
| 839 return (cond?"ae":"b"); | |
| 840 } | |
| 841 | |
| 842 char * | |
| 843 code_eq(int cond) { | |
| 844 return (cond?"e":"ne"); | |
| 845 } | |
| 846 | |
| 847 void | |
| 225 | 848 code_cmp_crgvar(int e1,int reg,int sz) { |
| 235 | 849 use_int(reg); |
| 167 | 850 if (sz==1) |
| 851 printf("\tcmpb $0,%s\n",((NMTBL*)cadr(e1))->nm); | |
| 852 else if (sz==size_of_short) | |
| 853 printf("\tcmpw $0,%s\n",((NMTBL*)cadr(e1))->nm); | |
| 61 | 854 } |
| 855 | |
| 856 | |
| 857 void | |
| 225 | 858 code_cmp_crlvar(int e1,int reg,int sz) { |
| 235 | 859 use_int(reg); |
| 167 | 860 if (sz==1) |
| 861 printf("\tcmpb $0,%d(%%ebp)\n",lvar(e1)); | |
| 862 else if (sz==size_of_short) | |
| 863 printf("\tcmpw $0,%d(%%ebp)\n",lvar(e1)); | |
| 61 | 864 } |
| 865 | |
| 866 | |
| 867 void | |
| 225 | 868 code_cmp_rgvar(int e1,int reg) { |
| 235 | 869 use_int(reg); |
| 109 | 870 printf("\tcmpl $0,%s\n",((NMTBL*)cadr(e1))->nm); |
| 61 | 871 } |
| 872 | |
| 873 | |
| 874 void | |
| 225 | 875 code_cmp_rlvar(int e1,int reg) { |
| 235 | 876 use_int(reg); |
| 119 | 877 printf("\tcmpl $0,%d(%%ebp)\n",lvar(e1)); |
| 61 | 878 } |
| 879 | |
| 880 | |
| 881 void | |
| 882 code_cmp_register(int e2) { | |
| 235 | 883 use_int(e2); |
| 61 | 884 printf("\tcmpl $0,%s\n",register_name(e2,0)); |
| 885 } | |
| 886 | |
| 887 | |
| 888 void | |
| 889 ascii(char *s) | |
| 890 { | |
| 891 printf("\t.string \""); | |
| 892 while(*s) { | |
| 893 if (*s=='\n') | |
| 894 printf("%cn",92); | |
| 895 else if (*s<' ') | |
| 896 printf("%c%03o",92,*s); | |
| 897 else if (*s==34) | |
| 898 printf("%c%c",92,34); | |
| 899 else | |
| 900 printf("%c",*s); | |
| 901 s++; | |
| 902 } | |
| 903 printf("%c\n",34); | |
| 904 } | |
| 905 | |
| 906 void | |
| 107 | 907 code_string(int e1,int creg) |
| 61 | 908 { |
| 909 char *s; | |
| 910 int i,lb; | |
| 911 | |
| 235 | 912 use_int(creg); |
| 61 | 913 if (0) { |
| 914 s=(char *)cadr(e1); | |
| 915 lb=fwdlabel(); | |
| 916 printf("\tjmp _%d\n",lb); | |
| 917 i=backdef(); | |
| 918 ascii(s); | |
| 919 printf("\t.align 2\n"); | |
| 920 fwddef(lb); | |
| 921 printf("\tlea _%d,%s\n",i,register_name(creg,0)); | |
| 922 } else { | |
| 923 s=(char *)cadr(e1); | |
| 924 printf(".section\t.rodata\n"); | |
| 925 lb=fwdlabel(); | |
| 926 printf("_%d:\n",lb); | |
| 927 ascii(s); | |
| 928 if (output_mode==TEXT_EMIT_MODE) { | |
| 929 printf(".text\n"); | |
| 930 } else { | |
| 931 text_mode(); | |
| 932 } | |
| 933 printf("\tlea _%d,%s\n",lb,register_name(creg,0)); | |
| 934 } | |
| 935 } | |
| 936 | |
| 937 #define MAX_COPY_LEN 20 | |
| 938 | |
| 939 void | |
| 940 emit_copy(int from,int to,int length,int offset,int value,int det) | |
| 941 { | |
| 942 int fix = 0; | |
| 943 /* length <0 means upward direction copy */ | |
| 235 | 944 use_int(from); |
| 945 use_int(to); | |
| 61 | 946 switch (length) { |
| 947 case 0: break; | |
| 948 case 1: case -1: | |
| 949 printf("\tmovb %d(%s),%s\n",offset, | |
| 950 register_name(from,0), reg_name_l[rname[dreg]] ); | |
| 951 printf("\tmovb %s,%d(%s)\n",reg_name_l[rname[dreg]] ,offset, | |
| 952 register_name(to,0)); | |
| 953 break; | |
| 954 case 2: case -2: | |
| 955 printf("\tmovw %d(%s),%s\n",offset, | |
| 956 register_name(from,0), reg_name_w[rname[dreg]] ); | |
| 957 printf("\tmovw %s,%d(%s)\n",reg_name_w[rname[dreg]] ,offset, | |
| 958 register_name(to,0)); | |
| 959 break; | |
| 960 case 4: case -4: | |
| 961 printf("\tmovl %d(%s),%s\n",offset, | |
| 962 register_name(from,0), register_name(dreg,0)); | |
| 963 printf("\tmovl %s,%d(%s)\n",register_name(dreg,0), offset, | |
| 964 register_name(to,0)); | |
| 965 break; | |
| 966 default: | |
| 967 if (-MAX_COPY_LEN<length && length <0) { | |
| 968 for(;length<=4;length+=4,offset-=4) | |
| 969 emit_copy(from,to,4,offset,0,det); | |
| 970 for(;length<=2;length+=2,offset-=2) | |
| 971 emit_copy(from,to,2,offset,0,det); | |
| 972 if(length>0) | |
| 973 emit_copy(from,to,length,offset,0,det); | |
| 974 break; | |
| 975 } else if (length <=MAX_COPY_LEN) { | |
| 976 for(;length>=4;length-=4,offset+=4) | |
| 977 emit_copy(from,to,4,offset,0,det); | |
| 978 for(;length>=2;length-=2,offset+=2) | |
| 979 emit_copy(from,to,2,offset,0,det); | |
| 980 if(length>0) | |
| 981 emit_copy(from,to,length,offset,0,det); | |
| 982 break; | |
| 983 } | |
| 984 if (det) { | |
| 985 /* | |
| 986 call bcopy | |
| 987 g_expr(list3(FUNCTION,,); | |
| 988 break; | |
| 989 */ | |
| 990 } | |
| 991 use_register(from,REG_ESI,1); | |
| 992 use_register(to, REG_EDI,1); | |
| 993 use_register(dreg,REG_ECX,0); | |
| 994 if (length<0) { | |
| 995 printf("\tmovl $%d,%%ecx\n",-length/4); | |
| 996 printf("\taddl $%d,%%esi\n",-length); | |
| 997 printf("\taddl $%d,%%edi\n",-length); | |
| 998 printf("\tstd\n\trep\n\tmovsl\n"); | |
| 999 if(length%4) { | |
| 1000 emit_copy(from,to,length,offset+length/4,0,det); | |
| 1001 } | |
| 1002 } else { | |
| 1003 printf("\tmovl $%d,%%ecx\n",length/4); | |
| 1004 fix = (length/4)*4; | |
| 1005 printf("\tcld\n\trep\n\tmovsl\n"); | |
| 1006 if(length%4) { | |
| 1007 emit_copy(from,to,length,offset+length/4,0,det); | |
| 1008 } | |
| 1009 } | |
| 1010 } | |
| 1011 if (value) { | |
| 1012 /* creg must point top of the destination data */ | |
| 1013 /* this code is necessary for the value of assignment or function call */ | |
| 1014 /* otherwise we don't need this */ | |
| 1015 if (fix) printf("\tsubl $%d,%s\n",fix,register_name(to,0)); | |
| 1016 if(creg!=to) { | |
| 1017 if (to==dreg) | |
| 1018 printf("\tmovl %s,%s\n",register_name(to,0),register_name(creg,0)); | |
| 1019 else { | |
| 1020 free_register(creg); creg=to; | |
| 1021 } | |
| 1022 } | |
| 1023 } | |
| 1024 regv[from]=regv[to]=regv[dreg]=0; | |
| 1025 regv[creg]=1; | |
| 1026 } | |
| 1027 | |
| 1028 int | |
| 1029 struct_push(int e4,int t) | |
| 1030 { | |
| 81 | 1031 int length,xreg,save,lreg,count; |
| 61 | 1032 g_expr(e4); |
| 1033 length=size(t); | |
| 1034 if(length%size_of_int) { | |
| 1035 length += size_of_int - (length%size_of_int); | |
| 1036 } | |
| 81 | 1037 for(count=0;length<MAX_COPY_LEN;count++,length-=size_of_int) { |
| 1038 if (length==0) return count; | |
| 1039 else { | |
| 1040 printf("\tpushl %d(%s)\n", | |
| 1041 length-size_of_int,register_name(creg,0)); | |
| 1042 } | |
| 61 | 1043 } |
| 1044 printf("\tsubl $%d,%%esp\n",length); | |
| 1045 if (register_full()) { | |
| 1046 save = 1; | |
| 1047 for(lreg=0;lreg==creg||lreg==dreg;lreg++); | |
| 1048 printf("\tpushl %s\n",register_name(lreg,0)); | |
| 1049 xreg = lreg; regv[xreg]=0; | |
| 1050 } else { | |
| 1051 save=0; | |
| 1052 xreg = get_register(); | |
| 1053 } | |
| 1054 if (save) | |
| 1055 printf("\tlea %d(%%esp),%s\n",size_of_int,register_name(xreg,0)); | |
| 1056 else | |
| 1057 printf("\tmovl %%esp,%s\n",register_name(xreg,0)); | |
| 1058 regv[xreg]=1; | |
| 1059 /* downward direction copy */ | |
| 1060 emit_copy(creg,xreg,length,0,0,1); | |
| 1061 /* we have value in creg, it may be changed */ | |
| 1062 if (save) { | |
| 1063 if(creg==xreg) { | |
| 1064 creg = get_register(); /* creg is freed in emit_copy */ | |
| 1065 } | |
| 1066 printf("\tpopl %s\n",register_name(xreg,0)); | |
| 1067 regv[xreg]=1; | |
| 1068 } else | |
| 1069 free_register(xreg); | |
| 1070 return length/size_of_int; | |
| 1071 } | |
| 1072 | |
| 94 | 1073 int |
| 61 | 1074 function(int e1) |
| 1075 { | |
| 127 | 1076 int e2,e3,e4,nargs,t,ret_type; |
| 1077 NMTBL *n=0; | |
| 61 | 1078 int save,saved; |
|
136
069960078249
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parents:
133
diff
changeset
|
1079 ret_type = cadr(cadddr(e1)); |
|
069960078249
remove redundant funcall argument for prototyped code in PowerPC case.
kono
parents:
133
diff
changeset
|
1080 if (ret_type==CHAR) ret_type=INT; |
|
069960078249
remove redundant funcall argument for prototyped code in PowerPC case.
kono
parents:
133
diff
changeset
|
1081 |
| 94 | 1082 #ifdef SAVE_STACKS |
| 1083 code_save_stacks(); | |
| 237 | 1084 #if FLOAT_CODE |
| 1085 code_save_fstacks(); | |
| 1086 #endif | |
| 94 | 1087 #endif |
| 137 | 1088 if (free_register_count(0)<1) { |
| 61 | 1089 for(save = 0;save==dreg||save==creg;save++); |
| 1090 printf("\tpushl %s\n",register_name(save,0)); | |
| 1091 saved = 1; | |
| 1092 } else { | |
| 1093 save = get_register(); | |
| 1094 saved = 0; | |
| 1095 } | |
| 1096 regv[save]=0; | |
| 1097 e2 = cadr(e1); | |
| 1098 nargs = 0; | |
| 1099 for (e3 = caddr(e1); e3; e3 = cadr(e3)) { | |
| 1100 t=caddr(e3); | |
| 127 | 1101 e4 = car(e3); |
| 61 | 1102 if(scalar(t)) { |
| 240 | 1103 if (car(e4)==REGISTER) { |
| 1104 printf("\tpushl %s\n",register_name(cadr(e4),0)); | |
| 1105 } else { | |
| 1106 g_expr(e4); | |
| 1107 printf("\tpushl %s\n",register_name(creg,0)); | |
| 1108 } | |
| 237 | 1109 } else if (t==LONGLONG||t==ULONGLONG) { |
| 240 | 1110 if (car(e4)==LREGISTER) { |
| 1111 printf("\tpushl %s\n\tpushl %s\n",l_edx(cadr(e4)),l_eax(cadr(e4))); | |
| 1112 } else { | |
| 1113 g_expr(e4); | |
| 1114 printf("\tpushl %%edx\n\tpushl %%eax\n"); | |
| 1115 } | |
| 241 | 1116 ++nargs; |
| 82 | 1117 } else if (t==DOUBLE) { |
| 1118 g_expr(e4); | |
| 1119 printf("\tleal\t-8(%%esp),%%esp\n\tfstpl\t(%%esp)\n"); | |
| 85 | 1120 nargs += size_of_double/size_of_int; |
| 83 | 1121 fregv[freg]=0; |
| 82 | 1122 continue; |
| 1123 } else if (t==FLOAT) { | |
| 1124 g_expr(e4); | |
| 1125 printf("\tleal\t-4(%%esp),%%esp\n\tfstps\t(%%esp)\n"); | |
| 85 | 1126 nargs += size_of_float/size_of_int; |
| 83 | 1127 fregv[freg]=0; |
| 82 | 1128 continue; |
| 61 | 1129 } else if (car(t)==STRUCT||car(t)==UNION) { |
| 1130 nargs += struct_push(e4,t); | |
| 1131 continue; | |
| 1132 } else { | |
| 1133 error(TYERR); | |
| 1134 } | |
| 1135 ++nargs; | |
| 1136 } | |
| 1137 if (car(e2) == FNAME) { | |
| 1138 n=(NMTBL *)cadr(e2); | |
| 78 | 1139 regv[creg]=0; |
| 1140 use_register(creg,REG_EAX,0); /* will be destroyed */ | |
| 61 | 1141 } else { |
| 1142 g_expr(e2); | |
| 78 | 1143 regv[creg]=1; |
| 1144 use_register(creg,REG_EAX,1); /* will be destroyed */ | |
| 61 | 1145 } |
| 1146 | |
| 1147 /* we don't have to save creg nor dreg */ | |
| 1148 regs[creg]=0; regs[dreg]=0; | |
| 78 | 1149 regv[dreg]= regv[save]= 0; |
| 239 | 1150 use_register(dreg,REG_EBX,0); /* will be destroyed */ |
| 61 | 1151 use_register(save,REG_ECX,0); /* will be destroyed */ |
| 1152 regs[creg]=1; regs[dreg]=1; | |
| 1153 | |
| 1154 if (car(e2) == FNAME) { | |
| 1155 printf("\tcall\t%s\n",n->nm); | |
| 1156 } else { | |
| 1157 printf("\tcall\t*%s\n",register_name(creg,0)); | |
| 1158 } | |
| 1159 if (nargs) printf("\taddl $%d,%%esp\n",size_of_int*nargs); | |
| 1160 if (saved) { | |
| 1161 printf("\tpopl %s\n",register_name(save,0)); | |
| 1162 } else { | |
| 1163 free_register(save); | |
| 1164 } | |
| 1165 regv[save]=0; | |
| 105 | 1166 if (ret_type==DOUBLE||ret_type==FLOAT) { |
| 239 | 1167 } else if (ret_type==LONGLONG||ret_type==ULONGLONG) { |
| 243 | 1168 use_longlong0(USE_CREG); |
| 1169 regv[creg]=1; | |
| 105 | 1170 } else if (ret_type==VOID) { |
| 243 | 1171 regv[freg]=0; regv[creg]=0; |
| 94 | 1172 } else { |
| 243 | 1173 use_register(creg,REG_EAX,0); |
| 94 | 1174 fregv[freg]=0; regv[creg]=1; |
| 1175 } | |
| 105 | 1176 return ret_type; |
| 61 | 1177 } |
| 1178 | |
| 1179 void | |
| 1180 code_frame_pointer(int e3) { | |
| 235 | 1181 use_int(e3); |
| 61 | 1182 printf("\tmovl %s,%%ebp\n",register_name(e3,0)); |
| 1183 } | |
| 1184 | |
| 1185 | |
| 1186 void | |
| 62 | 1187 code_fix_frame_pointer(int disp_offset) { |
| 61 | 1188 printf("\tlea %d(%%ebp),%%ebp\n",disp_offset); |
| 1189 } | |
| 1190 | |
| 1191 | |
| 1192 void | |
| 1193 code_jmp(char *s) { | |
| 1194 printf("\tjmp %s\n",s); | |
| 1195 } | |
| 1196 | |
| 1197 | |
| 1198 void | |
| 1199 code_indirect_jmp(int e2) { | |
| 1200 printf("\tjmp *%s\n",register_name(e2,0)); | |
| 1201 } | |
| 1202 | |
| 94 | 1203 int |
| 225 | 1204 code_rindirect(int e1, int reg,int offset, int us) |
| 196 | 1205 { |
| 1206 char *crn,*op; | |
| 1207 int byte; | |
| 1208 g_expr(e1); | |
| 1209 byte = 0; op="movl"; | |
| 1210 crn = register_name(creg,0); | |
| 235 | 1211 use_int(reg); |
| 1212 printf("\t%s %d(%s),%s\n",op,offset,crn,register_name(reg,0)); | |
| 196 | 1213 return us?UNSIGNED:INT; |
| 1214 } | |
| 1215 | |
| 1216 int | |
| 225 | 1217 code_crindirect(int e1, int reg,int offset, int us) |
| 61 | 1218 { |
| 196 | 1219 char *crn,*op; |
| 1220 int byte; | |
| 1221 g_expr(e1); | |
| 1222 byte = 0; op=us?"movzbl":"movsbl"; | |
| 1223 crn = register_name(creg,0); | |
| 235 | 1224 use_int(reg); |
| 1225 printf("\t%s %d(%s),%s\n",op,offset,crn,register_name(reg,0)); | |
| 196 | 1226 return us?UCHAR:CHAR; |
| 1227 } | |
| 1228 | |
| 1229 int | |
| 225 | 1230 code_srindirect(int e1, int reg,int offset, int us) |
| 196 | 1231 { |
| 1232 char *crn,*op; | |
| 1233 int byte; | |
| 1234 g_expr(e1); | |
| 1235 byte = 0; op=us?"movzwl":"movswl"; | |
| 1236 crn = register_name(creg,0); | |
| 235 | 1237 use_int(reg); |
| 1238 printf("\t%s %d(%s),%s\n",op,offset,crn,register_name(reg,0)); | |
| 196 | 1239 return us?USHORT:SHORT; |
| 1240 } | |
| 1241 | |
| 195 | 1242 #if FLOAT_CODE |
| 196 | 1243 int |
| 225 | 1244 code_drindirect(int e1, int reg,int offset, int d) |
| 196 | 1245 { |
| 1246 g_expr(e1); | |
| 1247 printf("\t%s (%s)\n",fload(d),register_name(creg,0)); | |
| 1248 return DOUBLE; | |
| 1249 } | |
| 195 | 1250 #endif |
| 196 | 1251 |
| 1252 #if LONGLONG_CODE | |
| 237 | 1253 |
| 1254 static void | |
| 239 | 1255 lload(int creg,int offset,int reg) |
| 237 | 1256 { |
| 1257 char *crn = register_name(creg,0); | |
| 239 | 1258 use_longlong(reg); |
| 1259 if((reg==REG_L&&rname[creg]==REG_ESI)||(rname[creg]==REG_EAX)) { | |
| 1260 printf("\tmovl %d(%s),%s\n",offset+size_of_int,crn,l_edx(reg)); | |
| 240 | 1261 printf("\tmovl %d(%s),%s\n",offset,crn,l_eax(reg)); |
| 237 | 1262 } else { |
| 239 | 1263 printf("\tmovl %d(%s),%s\n",offset,crn,l_eax(reg)); |
| 240 | 1264 printf("\tmovl %d(%s),%s\n",offset+size_of_int,crn,l_edx(reg)); |
| 237 | 1265 } |
| 1266 } | |
| 1267 | |
| 196 | 1268 int |
| 225 | 1269 code_lrindirect(int e1, int reg, int offset, int us) |
| 196 | 1270 { |
| 240 | 1271 int reg0; |
| 237 | 1272 g_expr(e1); |
| 240 | 1273 regv[reg0=creg]=1; |
| 237 | 1274 use_longlong(reg); |
| 240 | 1275 lload(reg0,offset,reg); |
| 203 | 1276 return LONGLONG; |
| 61 | 1277 } |
| 196 | 1278 #endif |
| 61 | 1279 |
| 1280 char * | |
| 1281 move(int byte) | |
| 1282 { | |
| 165 | 1283 return byte==1?"movb":byte==size_of_short?"movw":"movl"; |
| 61 | 1284 } |
| 1285 | |
| 1286 void | |
| 103 | 1287 code_assign_gvar(int e2,int creg,int byte) { |
| 235 | 1288 use_int(creg); |
| 61 | 1289 if (byte) use_data_reg(creg,1); |
| 109 | 1290 printf("\t%s %s,%s\n",move(byte),register_name(creg,byte),((NMTBL*)cadr(e2))->nm); |
| 61 | 1291 } |
| 1292 | |
| 1293 void | |
| 103 | 1294 code_assign_lvar(int e2,int creg,int byte) { |
| 235 | 1295 use_int(creg); |
| 61 | 1296 if (byte) use_data_reg(creg,1); |
| 119 | 1297 printf("\t%s %s,%d(%%ebp)\n",move(byte),register_name(creg,byte),lvar(e2)); |
| 61 | 1298 } |
| 1299 | |
| 1300 void | |
| 111 | 1301 code_assign_register(int e2,int byte,int creg) { |
| 235 | 1302 use_int(creg); |
| 61 | 1303 printf("\tmovl %s,%s\n",register_name(creg,0),register_name(e2,0)); |
| 1304 } | |
| 1305 | |
| 1306 void | |
| 118 | 1307 code_assign(int e2,int byte,int creg) { |
| 235 | 1308 use_int(e2); |
| 1309 use_int(creg); | |
| 95 | 1310 if (byte) use_data_reg(creg,1); |
| 61 | 1311 printf("\t%s %s,(%s)\n",move(byte),register_name(creg,byte),register_name(e2,0)); |
| 144 | 1312 regv[creg]=1; |
| 61 | 1313 } |
| 1314 | |
| 1315 void | |
| 225 | 1316 code_register_assop(int e2,int reg0,int op,int byte) { |
| 61 | 1317 int reg; |
| 1318 int xreg = creg; | |
| 1319 creg = reg = e2; | |
| 225 | 1320 tosop(op,reg,xreg); |
| 61 | 1321 creg = xreg; |
| 1322 printf("\tmovl %s,%s\n",register_name(reg,0),register_name(creg,0)); | |
| 159 | 1323 regs[creg]=regv[creg]=1; |
| 61 | 1324 } |
| 1325 | |
| 1326 | |
| 1327 void | |
| 225 | 1328 code_assop(int op,int reg,int byte,int sign) { |
| 61 | 1329 char *xrn; |
| 1330 int xreg; | |
| 237 | 1331 int edx = edx_setup(-1); |
| 235 | 1332 use_int(reg); |
| 61 | 1333 xrn = register_name(xreg = emit_pop(0),0); /* pop e3 value */ |
| 1334 regv[xreg]=regs[xreg]=1; | |
| 235 | 1335 printf("\tmovl %s,%s # assop \n",register_name(reg,0),register_name(edx,0)); |
| 61 | 1336 regv[edx]=1; |
| 235 | 1337 ld_indexx(byte,0,edx,reg,sign); |
| 225 | 1338 tosop(op,reg,xreg); |
| 235 | 1339 printf("\t%s %s,(%s)\n",move(byte),register_name(reg,byte),register_name(edx,0)); |
| 61 | 1340 edx_cleanup(); |
| 1341 emit_pop_free(xreg); | |
| 144 | 1342 regv[creg]=1; |
| 61 | 1343 } |
| 1344 | |
| 1345 | |
| 1346 void | |
| 225 | 1347 tosop(int op,int reg,int oreg) |
| 61 | 1348 { |
| 1349 int dx; | |
| 1350 char *orn,*crn; | |
| 235 | 1351 use_int(reg); |
| 61 | 1352 |
| 1353 switch(op) { | |
| 1354 case LSHIFT: | |
| 1355 case ULSHIFT: | |
| 235 | 1356 shift("sall",oreg,reg); |
| 144 | 1357 regv[creg]=1; |
| 61 | 1358 return; |
| 1359 case RSHIFT: | |
| 235 | 1360 shift("sarl",oreg,reg); |
| 144 | 1361 regv[creg]=1; |
| 61 | 1362 return; |
| 1363 case URSHIFT: | |
| 235 | 1364 shift("shrl",oreg,reg); |
| 144 | 1365 regv[creg]=1; |
| 61 | 1366 return; |
| 1367 } | |
| 1368 if(oreg==-1) { | |
| 1369 printf("\tpopl %s\n",register_name(dreg,0)); | |
| 1370 oreg = dreg; | |
| 1371 regv[dreg]=1; | |
| 94 | 1372 } else if (oreg<= -REG_LVAR_OFFSET) { |
| 119 | 1373 code_rlvar(oreg+REG_LVAR_OFFSET,dreg); |
| 117 | 1374 free_lvar(oreg+REG_LVAR_OFFSET); |
| 94 | 1375 oreg = dreg; |
| 1376 regv[dreg]=1; | |
| 61 | 1377 } |
| 1378 regv[oreg]=1; regs[oreg]=1; | |
| 1379 orn = register_name(oreg,0); | |
| 1380 crn = register_name(creg,0); | |
| 1381 switch(op) { | |
| 1382 case ADD: | |
| 1383 printf("\taddl %s,%s\n",orn,crn); | |
| 1384 break; | |
| 89 | 1385 case SUB: case CMP: |
| 61 | 1386 printf("\tsubl %s,%s\n",orn,crn); |
| 1387 break; | |
| 1388 case BAND: | |
| 1389 printf("\tandl %s,%s\n",orn,crn); | |
| 1390 break; | |
| 1391 case EOR: | |
| 1392 printf("\txorl %s,%s\n",orn,crn); | |
| 1393 break; | |
| 1394 case BOR: | |
| 1395 printf("\torl %s,%s\n",orn,crn); | |
| 1396 break; | |
| 1397 case MUL: | |
| 1398 case UMUL: | |
| 1399 printf("\t%s %s,%s\n","imull",orn,crn); | |
| 1400 break; | |
| 1401 case DIV: | |
| 1402 case UDIV: | |
| 1403 use_register(creg,REG_EAX,1); | |
| 237 | 1404 edx_setup(REG_EDX); |
| 61 | 1405 orn = register_name(oreg,0); |
| 1406 if (op==DIV) | |
| 127 | 1407 printf("\tcltd\n\tidivl %s\n",orn); |
| 61 | 1408 else |
| 127 | 1409 printf("\txor %%edx,%%edx\n\tdivl %s\n",orn); |
| 61 | 1410 edx_cleanup(); |
| 1411 break; | |
| 1412 case MOD: | |
| 1413 case UMOD: | |
| 1414 use_register(creg,REG_EAX,1); | |
| 237 | 1415 edx_setup(REG_EDX); |
| 61 | 1416 orn = register_name(oreg,0); |
| 235 | 1417 if (op==MOD) |
| 127 | 1418 printf("\tcltd\n\tidivl %s\n",orn); |
| 61 | 1419 else |
| 127 | 1420 printf("\txor %%edx,%%edx\n\tdivl %s\n",orn); |
| 61 | 1421 dx = virtual(REG_EDX); |
| 1422 if (dx!=creg) { | |
| 1423 rname[dx]=rname[creg]; | |
| 1424 rname[creg]=REG_EDX; | |
| 1425 } | |
| 1426 edx_cleanup(); | |
| 1427 break; | |
| 1428 } | |
| 159 | 1429 if (oreg!=dreg&&oreg!=creg&&oreg>=0) |
| 61 | 1430 free_register(oreg); |
| 94 | 1431 else if (oreg==dreg) regv[dreg]=0; |
| 144 | 1432 regv[creg]=1; |
| 61 | 1433 } |
| 1434 | |
| 189 | 1435 int |
| 240 | 1436 code_const_op_p(int op,int e) |
| 189 | 1437 { |
| 240 | 1438 if (car(e)!=CONST) return 0; |
| 190 | 1439 if (op==DIV||op==UDIV||op==MOD||op==UMOD) return 0; |
| 189 | 1440 else return 1; |
| 1441 } | |
| 1442 | |
| 1443 void | |
| 225 | 1444 oprtc(int op,int reg,int orn) |
| 189 | 1445 { |
| 235 | 1446 char *crn; |
| 1447 use_int(reg); | |
| 1448 crn = register_name(reg,0); | |
| 240 | 1449 orn = cadr(orn); |
| 189 | 1450 |
| 1451 switch(op) { | |
| 1452 case LSHIFT: | |
| 1453 case ULSHIFT: | |
| 1454 printf("\tsall $%d,%s\n",orn,crn); | |
| 1455 return; | |
| 1456 case RSHIFT: | |
| 1457 printf("\tsarl $%d,%s\n",orn,crn); | |
| 1458 return; | |
| 1459 case URSHIFT: | |
| 1460 printf("\tshrl $%d,%s\n",orn,crn); | |
| 1461 return; | |
| 1462 case ADD: | |
| 1463 printf("\taddl $%d,%s\n",orn,crn); | |
| 1464 break; | |
| 1465 case SUB: case CMP: | |
| 1466 printf("\tsubl $%d,%s\n",orn,crn); | |
| 1467 break; | |
| 1468 case BAND: | |
| 1469 printf("\tandl $%d,%s\n",orn,crn); | |
| 1470 break; | |
| 1471 case EOR: | |
| 1472 printf("\txorl $%d,%s\n",orn,crn); | |
| 1473 break; | |
| 1474 case BOR: | |
| 1475 printf("\torl $%d,%s\n",orn,crn); | |
| 1476 break; | |
| 1477 case MUL: | |
| 1478 case UMUL: | |
| 1479 printf("\t%s $%d,%s\n","imull",orn,crn); | |
| 1480 break; | |
| 1481 default: | |
| 1482 error(-1); | |
| 1483 } | |
| 1484 } | |
| 1485 | |
| 1486 | |
| 61 | 1487 static int edx_stack=0; |
| 1488 | |
| 1489 int | |
| 237 | 1490 edx_setup(int rreg) |
| 61 | 1491 { |
| 1492 int edx_save; | |
| 1493 /* make real EDX register empty */ | |
| 137 | 1494 if (free_register_count(0)<1) { |
| 61 | 1495 for(edx_save = 0;edx_save==dreg||edx_save==creg;edx_save++); |
| 1496 printf("\tpushl %s\n",register_name(edx_save,0)); | |
| 1497 edx_stack = list3(edx_save,edx_stack,0); | |
| 1498 } else { | |
| 1499 edx_save = get_register(); | |
| 1500 edx_stack = list3(edx_save,edx_stack,1); | |
| 1501 } | |
| 1502 regv[edx_save]=0; | |
| 237 | 1503 if (rreg!=-1) |
| 1504 use_register(edx_save,rreg,0); | |
| 61 | 1505 return edx_save; |
| 1506 } | |
| 1507 | |
| 1508 | |
| 1509 void | |
| 1510 edx_cleanup() | |
| 1511 { | |
| 1512 if (caddr(edx_stack)==0) { | |
| 1513 printf("\tpopl %s\n",register_name(car(edx_stack),0)); | |
| 1514 } else | |
| 1515 free_register(car(edx_stack)); | |
| 1516 edx_stack = cadr(edx_stack); | |
| 1517 } | |
| 1518 | |
| 1519 void | |
| 235 | 1520 shift(char *op, int reg,int creg) |
| 61 | 1521 { |
| 235 | 1522 use_int(creg); |
| 61 | 1523 if (reg>=0) { |
| 1524 use_register(reg,REG_ECX,1); | |
| 103 | 1525 } else if (reg<= -REG_LVAR_OFFSET) { |
| 1526 use_register(dreg,REG_ECX,0); | |
| 119 | 1527 code_rlvar(reg+REG_LVAR_OFFSET,dreg); |
| 103 | 1528 reg = dreg; |
| 1529 regv[dreg]=0; | |
| 61 | 1530 } else { |
| 1531 use_register(dreg,REG_ECX,0); | |
| 1532 printf("\tpopl %%ecx\n"); | |
| 103 | 1533 regv[dreg]=0; |
| 61 | 1534 } |
| 1535 printf("\t%s %%cl,%s\n",op,register_name(creg,0)); | |
| 1536 } | |
| 1537 | |
| 1538 void | |
| 235 | 1539 ld_indexx(int byte, int n, int xreg,int reg,int sign) |
| 61 | 1540 { |
| 1541 char *op; | |
| 1542 | |
| 235 | 1543 use_int(reg); |
| 166 | 1544 op = byte ? (sign?"movsbl":"movzbl") : "movl"; |
| 61 | 1545 if (n) |
| 95 | 1546 printf("\t%s %d(%s),%s\n",op,n, |
| 235 | 1547 register_name(xreg,0),register_name(reg,byte)); |
| 61 | 1548 else |
| 95 | 1549 printf("\t%s (%s),%s\n",op, |
| 235 | 1550 register_name(xreg,0),register_name(reg,byte)); |
| 95 | 1551 } |
| 1552 | |
| 1553 int | |
| 1554 code_csvalue() | |
| 1555 { | |
| 123 | 1556 return rname[creg]; /* for switch value */ |
| 61 | 1557 } |
| 1558 | |
| 1559 void | |
| 95 | 1560 code_cmpdimm(int e, int csreg) |
| 61 | 1561 { |
| 1562 /* used in dosiwtch() */ | |
| 66 | 1563 if(chk) return; |
| 123 | 1564 use_register(creg,csreg,0); |
| 61 | 1565 printf("\tcmpl $%d,%s\n",e,register_name(creg,0)); |
| 1566 } | |
| 1567 | |
| 1568 void | |
| 66 | 1569 code_opening(char *filename) |
| 61 | 1570 { |
| 1571 printf("\t.file \"%s\"\n",filename); | |
| 1572 printf("\t.version\t\"01.01\"\n"); | |
| 66 | 1573 /* printf("gcc2_compiled.:\n"); */ |
| 61 | 1574 printf(".text\n"); |
| 1575 } | |
| 1576 | |
| 1577 void | |
| 66 | 1578 code_closing() |
| 61 | 1579 { |
| 78 | 1580 global_table(); |
| 61 | 1581 printf("\t.ident \"Micro-C compiled\"\n"); |
| 1582 } | |
| 1583 | |
| 1584 void | |
| 89 | 1585 rexpr(int e1, int l1, char *s,int t) |
| 61 | 1586 { |
| 89 | 1587 g_expr(list3(CMP,cadr(e1),caddr(e1))); |
| 61 | 1588 printf("\tj%s\t_%d\n",s,l1); |
| 1589 } | |
| 1590 | |
| 82 | 1591 |
| 1592 void | |
| 61 | 1593 jcond(int l, char cond) |
| 1594 { | |
| 66 | 1595 if (chk) return; |
| 61 | 1596 printf("\tj%s\t_%d\n",cond?"ne":"e",l); |
| 1597 } | |
| 1598 | |
| 1599 void | |
| 1600 jmp(int l) | |
| 1601 { | |
| 1602 control=0; | |
| 66 | 1603 if (chk) return; |
| 61 | 1604 printf("\tjmp\t_%d\n",l); |
| 1605 /* align? */ | |
| 1606 /* | |
| 1607 this is not allowed because of ? operator | |
| 1608 regv[creg]=regv[dreg]=0; | |
| 1609 use_register(creg,REG_EAX,0); | |
| 1610 use_register(dreg,REG_EBX,0); | |
| 1611 */ | |
| 1612 } | |
| 1613 | |
| 1614 void | |
| 1615 gen_comment(char *s) | |
| 1616 { | |
| 66 | 1617 if (chk) return; |
| 1618 printf("## %s",s); | |
| 61 | 1619 } |
| 1620 | |
| 1621 | |
| 1622 void | |
| 1623 code_enter(char *name) | |
| 1624 { | |
| 1625 printf("\t.align 4\n"); | |
| 1626 if (stmode!=STATIC) | |
| 1627 printf(".globl %s\n",name); | |
| 1628 printf("\t.type\t%s,@function\n",name); | |
| 1629 printf("%s:\n",name); | |
| 1630 } | |
| 1631 | |
| 77 | 1632 |
| 61 | 1633 void |
| 1634 code_enter1(int args) | |
| 1635 { | |
| 1636 code_disp_label=fwdlabel(); | |
| 1637 printf("\tlea _%d(%%ebp),%%esp\n",code_disp_label); | |
| 1638 | |
| 1639 printf("## args %d disp %d code_arg_offset=%d code_disp_offset=%d\n",args,disp,code_arg_offset,code_disp_offset); | |
| 1640 } | |
| 1641 | |
| 1642 void | |
| 1643 code_leave(char *name) | |
| 1644 { | |
| 242 | 1645 disp &= -size_of_int; |
| 61 | 1646 printf("\t.set _%d,%d\n",code_disp_label,disp+code_disp_offset); |
| 1647 printf("_%d:\n",labelno); | |
| 1648 printf("\t.size\t%s,_%d-%s\n",name,labelno,name); | |
| 1649 local_table(); | |
| 1650 labelno++; | |
| 1651 free_all_register(); | |
| 1652 } | |
| 1653 | |
| 1654 void | |
| 1655 enter(char *name) | |
| 1656 { | |
| 1657 printf("\t.align 2\n"); | |
| 1658 if (stmode!=STATIC) | |
| 1659 printf(".globl %s\n",name); | |
| 1660 printf("%s:\n",name); | |
| 1661 printf("\t.type\t%s,@function\n",name); | |
| 1662 printf("\tpushl %%ebp\n"); | |
| 1663 printf("\tmovl %%esp,%%ebp\n"); | |
| 1664 printf("\tpushl %%ebx\n"); | |
| 1665 printf("\tpushl %%esi\n"); | |
| 1666 printf("\tpushl %%edi\n"); | |
| 1667 } | |
| 1668 | |
| 1669 void | |
| 1670 enter1() | |
| 1671 { | |
| 182 | 1672 text_mode(); |
| 61 | 1673 func_disp_label=fwdlabel(); |
| 1674 printf("\tlea _%d(%%ebp),%%esp\n",func_disp_label); | |
| 1675 /* if(disp) printf("\tsubl $%d,%%esp\n",-disp); */ | |
| 1676 } | |
| 1677 | |
| 1678 void | |
| 1679 leave(int control, char *name) | |
| 1680 { | |
| 128 | 1681 int sz; |
| 1682 | |
| 1683 disp &= -size_of_int; | |
| 61 | 1684 if (control) |
| 108 | 1685 code_set_return_register(1); |
| 61 | 1686 if (retcont) { |
| 1687 if (control) | |
| 1688 jmp(retlabel); | |
| 1689 fwddef(retcont); | |
| 128 | 1690 if (cadr(fnptr->ty)==FLOAT||cadr(fnptr->ty)==DOUBLE) { |
| 1691 printf("\tfldl %d(%%ebp)\n",-size_of_double); | |
| 1692 } else if (cadr(fnptr->ty)>0&&( | |
| 1693 car(cadr(fnptr->ty))==STRUCT || | |
| 1694 car(cadr(fnptr->ty))==UNION)) { | |
| 1695 sz = size(cadr(fnptr->ty)); | |
| 1696 printf("\tlea %d(%%ebp),%s\n",-sz,register_name(dreg,0)); | |
| 1697 printf("\tmovl %d(%%ebp),%s\n",disp-size_of_int, | |
| 1698 register_name(creg,0)); | |
| 1699 emit_copy(dreg,creg,sz,0,1,1); | |
| 1700 } else if (cadr(fnptr->ty)!=VOID) { | |
| 1701 use_register(creg,REG_EAX,0); | |
| 1702 printf("\tmovl %s,%s\n",reg_name[REG_ESI],register_name(creg,0)); | |
| 1703 } | |
| 61 | 1704 } |
| 1705 fwddef(retlabel); | |
| 63 | 1706 |
| 61 | 1707 printf("\tlea %d(%%ebp),%%esp\n",disp_offset); |
| 1708 printf("\tpopl %%edi\n"); | |
| 1709 printf("\tpopl %%esi\n"); | |
| 1710 printf("\tpopl %%ebx\n"); | |
| 1711 printf("\tleave\n"); | |
| 1712 printf("\tret\n"); | |
| 1713 printf("\t.set _%d,%d\n",func_disp_label,disp+disp_offset); | |
| 1714 printf("_%d:\n",labelno); | |
| 1715 printf("\t.size\t%s,_%d-%s\n",name,labelno,name); | |
| 1716 local_table(); | |
| 1717 labelno++; | |
| 1718 free_all_register(); | |
| 1719 } | |
| 1720 | |
| 187 | 1721 int |
| 1722 code_get_fixed_creg(int reg,int type) { | |
| 1723 if (type==FLOAT||type==DOUBLE) { | |
| 1724 return 0; | |
| 239 | 1725 } else if (type==LONGLONG||type==ULONGLONG) { |
| 1726 use_longlong(reg); | |
| 1727 return reg; | |
| 187 | 1728 } else { |
| 236 | 1729 use_int(reg); |
| 187 | 1730 return rname[reg]; |
| 1731 } | |
| 1732 } | |
| 61 | 1733 |
| 1734 void | |
| 187 | 1735 code_set_fixed_creg(int reg,int mode,int type) { |
| 108 | 1736 if (type==FLOAT||type==DOUBLE) { |
| 239 | 1737 } else if (type==LONGLONG||type==ULONGLONG) { |
| 187 | 1738 } else { |
| 1739 use_register(creg,reg,mode); | |
| 1740 } | |
| 61 | 1741 } |
| 1742 | |
| 1743 void | |
| 107 | 1744 code_set_return_register(int mode) { |
| 1745 if (fnptr->ty==DOUBLE||fnptr->ty==FLOAT) { | |
| 239 | 1746 } else if (fnptr->ty==LONGLONG||fnptr->ty==ULONGLONG) { |
| 243 | 1747 use_longlong0(USE_CREG); |
| 107 | 1748 } else { |
| 1749 use_register(creg,REG_EAX,mode); | |
| 1750 } | |
| 1751 } | |
| 1752 | |
| 1753 void | |
| 61 | 1754 gen_gdecl(char *n, int gpc) |
| 1755 { | |
| 1756 /* | |
| 1757 if (stmode!=STATIC) | |
| 1758 printf(".globl %s\n",n); | |
| 1759 */ | |
| 1760 } | |
| 1761 | |
| 1762 void | |
| 1763 align(int t) | |
| 1764 { | |
| 1765 if (t!=CHAR) { | |
| 1766 if (data_alignment & 1) | |
| 1767 printf("\t.align 2\n"); | |
| 1768 data_alignment = 0; | |
| 1769 } | |
| 1770 } | |
| 1771 | |
| 239 | 1772 #if LONGLONG_CODE |
| 1773 static long long ll0 = 1LL; | |
| 1774 | |
| 1775 static int | |
| 1776 code_l1(long long d) | |
| 1777 { | |
| 1778 int *i = (int *)&ll0; int *j = (int *)&d; | |
| 1779 return (i[1] == 1)?j[1]:j[0]; | |
| 1780 } | |
| 1781 | |
| 1782 static int | |
| 1783 code_l2(long long d) | |
| 1784 { | |
| 1785 int *i = (int *)&ll0; int *j = (int *)&d; | |
| 1786 return (i[1] == 1)?j[0]:j[1]; | |
| 1787 } | |
| 1788 #endif | |
| 1789 | |
| 61 | 1790 void |
| 1791 emit_data(int e, int t, NMTBL *n) | |
| 1792 { | |
| 1793 int l; | |
| 195 | 1794 #if FLOAT_CODE |
| 82 | 1795 double d; |
| 1796 float f; | |
| 195 | 1797 #endif |
| 239 | 1798 #if LONGLONG_CODE |
| 1799 long long ll; | |
| 1800 #endif | |
| 61 | 1801 char *name; |
| 1802 name = n->nm; | |
| 156 | 1803 if(mode!=GDECL && mode!=STADECL) { |
| 61 | 1804 error(-1); return; |
| 1805 } | |
| 66 | 1806 if (chk) return; |
| 61 | 1807 if (n->dsp != -1) { |
| 1808 n->dsp = -1; /* initiallized flag */ | |
| 1809 printf(".globl\t%s\n",name); | |
| 1810 data_mode(name); | |
| 1811 align(t); | |
| 1812 printf("%s:\n",name); | |
| 1813 } else { | |
| 1814 data_mode(0); | |
| 1815 } | |
| 1816 if(car(e)==CONST) { | |
| 168 | 1817 if (t==CHAR||t==UCHAR) { |
| 61 | 1818 printf("\t.byte %d\n",cadr(e)); |
| 1819 if (data_alignment>0) | |
| 1820 data_alignment++; | |
| 1821 gpc += 1; | |
| 168 | 1822 } else if (t==SHORT||t==USHORT) { |
| 1823 printf("\t.short %d\n",cadr(e)); | |
| 82 | 1824 if (data_alignment>0) data_alignment++; |
| 168 | 1825 gpc += size_of_short; |
| 61 | 1826 } else { |
| 1827 printf("\t.long %d\n",cadr(e)); | |
| 1828 gpc += size_of_int; | |
| 1829 } | |
| 239 | 1830 #if LONGLONG_CODE |
| 1831 } else if(t==LONGLONG||t==ULONGLONG) { | |
| 1832 ll = lcadr(e); | |
| 243 | 1833 printf("\t.long\t0x%x,0x%x\n",code_l1(ll),code_l2(ll)); |
| 239 | 1834 #endif |
| 195 | 1835 #if FLOAT_CODE |
| 82 | 1836 } else if(t==DOUBLE) { |
| 1837 d = dcadr(e); | |
| 1838 printf("\t.long\t0x%x,0x%x\n",code_d1(d),code_d2(d)); | |
| 1839 } else if(t==FLOAT) { | |
| 1840 f = dcadr(e); | |
| 1841 printf("\t.long\t0x%x\n",*(int *)&f); | |
| 195 | 1842 #endif |
| 61 | 1843 } else if(t!=CHAR) { |
| 1844 gpc += size_of_int; | |
| 1845 if(car(e)==ADDRESS&&car(cadr(e))==GVAR) { | |
| 109 | 1846 printf("\t.long %s\n",((NMTBL *)cadr(cadr(e)))->nm); |
| 1847 } else if(car(e)==GVAR) { | |
| 1848 printf("\t.long %s\n",((NMTBL *)cadr(e))->nm); | |
| 61 | 1849 } else if(car(e)==FNAME) { |
| 1850 printf("\t.long %s\n",((NMTBL *)cadr(e))->nm); | |
| 1851 } else if(car(e)==STRING) { | |
| 1852 if (car(n->ty)!=ARRAY || cadr(n->ty)!=CHAR) { | |
| 1853 l = fwdlabel(); | |
| 1854 printf("\t.long _%d\n",l); | |
| 1855 printf(".section\t.rodata\n"); | |
| 1856 printf("_%d:\n",l); | |
| 1857 output_mode = RODATA_EMIT_MODE; | |
| 1858 } | |
| 1859 ascii((char *)cadr(e)); | |
| 1860 } else error(TYERR); | |
| 168 | 1861 } else error(TYERR); |
| 61 | 1862 } |
| 1863 | |
| 1864 void | |
| 1865 emit_data_closing(NMTBL *n) | |
| 1866 { | |
| 1867 int lb; | |
| 66 | 1868 if (chk) return; |
| 61 | 1869 if (mode==GDECL) { |
| 1870 data_mode(0); | |
| 1871 lb=fwdlabel(); | |
| 1872 printf("_%d:\n",lb); | |
| 1873 printf("\t.size\t%s,_%d-%s\n",n->nm,lb,n->nm); | |
| 1874 } | |
| 1875 } | |
| 1876 | |
| 1877 void | |
| 1878 global_table(void) | |
| 1879 { | |
| 1880 NMTBL *n; | |
| 1881 int init; | |
| 1882 init=0; | |
| 1883 for(n=ntable;n < &ntable[GSYMS];n++) { | |
| 117 | 1884 if ((n->sc == GVAR||n->sc == STATIC) && n->dsp != -1) { |
| 61 | 1885 /* n->dsp = -1 means initialized global */ |
| 1886 if (init==0) { | |
| 1887 data_mode(0); | |
| 1888 init=1; | |
| 1889 } | |
| 1890 printf(".comm %s,%d\n",n->nm,size(n->ty)); | |
| 1891 } | |
| 1892 } | |
| 1893 } | |
| 1894 | |
| 1895 void | |
| 1896 local_table(void) | |
| 1897 { | |
| 1898 NMTBL *n; | |
| 1899 int init; | |
| 1900 init=0; | |
| 1901 /* static local variables */ | |
| 1902 for(n=ntable+GSYMS;n < &ntable[GSYMS+LSYMS];n++) { | |
| 1903 if (n->sc == GVAR) { | |
| 1904 if (init==0) { | |
| 1905 data_mode(0); | |
| 1906 init=1; | |
| 1907 } | |
| 156 | 1908 if (n->dsp!= -1) /* -1 means initialized global */ |
| 1909 printf(".lcomm %s,%d\n",n->nm,size(n->ty)); | |
| 61 | 1910 } |
| 1911 } | |
| 1912 } | |
| 1913 | |
| 1914 void | |
| 1915 text_mode(void) | |
| 1916 { | |
| 1917 if (output_mode!=TEXT_EMIT_MODE) { | |
| 1918 printf(".text\n"); | |
| 1919 printf("\t.align 2\n"); | |
| 1920 output_mode = TEXT_EMIT_MODE; | |
| 1921 } | |
| 1922 } | |
| 1923 | |
| 1924 void | |
| 1925 data_mode(char *name) | |
| 1926 { | |
| 1927 if (output_mode!=DATA_EMIT_MODE) { | |
| 1928 printf(".data\n"); | |
| 1929 output_mode = DATA_EMIT_MODE; | |
| 1930 } | |
| 1931 if (name) | |
| 1932 printf("\t.type\t%s,@object\n",name); | |
| 1933 } | |
| 1934 | |
| 195 | 1935 #if FLOAT_CODE |
| 1936 | |
| 81 | 1937 /* floating point */ |
| 1938 | |
| 1939 | |
| 82 | 1940 char * |
| 1941 fstore(int d) | |
| 1942 { | |
| 83 | 1943 return use? |
| 1944 (d?"fstl":"fsts"): | |
| 1945 (d?"fstpl":"fstps") | |
| 1946 ; | |
| 1947 } | |
| 1948 | |
| 1949 char * | |
| 1950 fstore_u(int d) | |
| 1951 { | |
| 82 | 1952 return d?"fstpl":"fstps"; |
| 1953 } | |
| 81 | 1954 |
| 82 | 1955 char * |
| 1956 fload(int d) | |
| 1957 { | |
| 1958 return d?"fldl":"flds"; | |
| 1959 } | |
| 81 | 1960 |
| 1961 | |
| 103 | 1962 void code_dassign_gvar(int e2,int freg,int d) |
| 82 | 1963 { |
| 109 | 1964 printf("\t%s %s\n",fstore(d),((NMTBL*)cadr(e2))->nm); |
| 82 | 1965 } |
| 1966 | |
| 103 | 1967 void code_dassign_lvar(int e2,int freg,int d) |
| 82 | 1968 { |
| 119 | 1969 printf("\t%s %d(%%ebp)\n",fstore(d),lvar(e2)); |
| 82 | 1970 } |
| 1971 | |
| 138 | 1972 void code_dassign_dregister(int e,int d,int freg) |
| 111 | 1973 { |
| 1974 error(-1); | |
| 1975 } | |
| 1976 | |
| 103 | 1977 void code_dassign(int e2,int freg,int d) |
| 82 | 1978 { |
| 1979 printf("\t%s (%s)\n",fstore(d),register_name(e2,0)); | |
| 1980 } | |
| 1981 | |
| 1982 static double d0 = 1.0; | |
| 81 | 1983 |
| 82 | 1984 int |
| 1985 code_d1(double d) | |
| 1986 { | |
| 1987 int *i = (int *)&d0; int *j = (int *)&d; | |
| 1988 return (i[1] == 0x3ff00000)?j[0]:j[1]; | |
| 1989 } | |
| 1990 | |
| 1991 int | |
| 1992 code_d2(double d) | |
| 1993 { | |
| 1994 int *i = (int *)&d0; int *j = (int *)&d; | |
| 1995 return (i[1] == 0x3ff00000)?j[1]:j[0]; | |
| 1996 } | |
| 1997 | |
| 138 | 1998 void code_dconst(int e2,int freg,int d) |
| 82 | 1999 { |
| 2000 int lb; | |
| 138 | 2001 double value = dcadr(e2); |
| 81 | 2002 |
| 138 | 2003 if (value==0.0) { |
| 82 | 2004 printf("\tfldz\n"); return; |
| 2005 } | |
| 138 | 2006 if (value==1.0) { |
| 82 | 2007 printf("\tfld1\n"); return; |
| 2008 } | |
| 2009 printf(" \t.section\t.rodata\n\t.align 8\n"); | |
| 2010 lb=fwdlabel(); | |
| 2011 printf("_%d:\n",lb); | |
| 138 | 2012 printf("\t.long\t0x%x,0x%x\n",code_d1(value),code_d2(value)); |
| 82 | 2013 if (output_mode==TEXT_EMIT_MODE) { |
| 2014 printf(".text\n"); | |
| 2015 } else { | |
| 2016 text_mode(); | |
| 2017 } | |
| 2018 printf("\tfldl _%d\n",lb); | |
| 2019 } | |
| 2020 | |
| 138 | 2021 void code_dneg(int freg,int d) |
| 82 | 2022 { |
| 2023 printf("\tfchs\n"); | |
| 2024 } | |
| 81 | 2025 |
| 239 | 2026 void code_d2i(int reg) |
| 82 | 2027 { |
| 239 | 2028 use_int(reg); |
| 82 | 2029 printf("\tlea -%d(%%esp),%%esp\n",size_of_int*2); |
| 2030 printf("\tfnstcw (%%esp)\n"); | |
| 2031 printf("\tmovl (%%esp), %s\n",register_name(creg,0)); | |
| 2032 printf("\tmovb $12, 1(%%esp)\n"); | |
| 2033 printf("\tfldcw (%%esp)\n"); | |
| 85 | 2034 printf("\tfistpl %d(%%esp)\n",size_of_int); |
| 127 | 2035 printf("\tmovl %s, (%%esp)\n",register_name(creg,0)); |
| 85 | 2036 printf("\tfldcw (%%esp)\n"); |
| 82 | 2037 printf("\tpopl %s\n",register_name(creg,0)); |
| 2038 printf("\tpopl %s\n",register_name(creg,0)); | |
| 2039 } | |
| 81 | 2040 |
| 239 | 2041 void code_i2d(int reg) |
| 82 | 2042 { |
| 2043 printf("\tpushl %s\n",register_name(creg,0)); | |
| 2044 printf("\tfildl (%%esp)\n"); | |
| 2045 printf("\tlea %d(%%esp),%%esp\n",size_of_int); | |
| 2046 } | |
| 2047 | |
| 239 | 2048 void code_d2u(int reg) |
| 85 | 2049 { |
| 239 | 2050 use_int(reg); |
| 86 | 2051 printf("\tlea -%d(%%esp),%%esp\n",size_of_int*3); |
| 85 | 2052 printf("\tfnstcw (%%esp)\n"); |
| 239 | 2053 printf("\tmovl (%%esp), %s\n",register_name(reg,0)); |
| 85 | 2054 printf("\tmovb $12, 1(%%esp)\n"); |
| 2055 printf("\tfldcw (%%esp)\n"); | |
| 239 | 2056 printf("\tmovl %s, (%%esp)\n",register_name(reg,0)); |
| 86 | 2057 printf("\tfistpll %d(%%esp)\n",size_of_int); |
| 85 | 2058 printf("\tfldcw (%%esp)\n"); |
| 239 | 2059 printf("\tmovl %d(%%esp),%s\n",size_of_int,register_name(reg,0)); |
| 86 | 2060 printf("\tlea %d(%%esp),%%esp\n",size_of_int*3); |
| 85 | 2061 } |
| 2062 | |
| 239 | 2063 void code_u2d(int reg) |
| 85 | 2064 { |
| 86 | 2065 printf("\tpushl %s\n",register_name(creg,0)); |
| 2066 printf("\tpushl %s\n",register_name(creg,0)); | |
| 2067 printf("\tmovl $0, %d(%%esp)\n",size_of_int); | |
| 2068 printf("\tfildll (%%esp)\n"); | |
| 2069 printf("\tlea %d(%%esp),%%esp\n",size_of_int*2); | |
| 85 | 2070 } |
| 2071 | |
| 239 | 2072 void code_d2f(int reg) { } |
| 2073 void code_f2d(int reg) { } | |
| 2074 void code_f2i(int reg) { code_d2i(reg); } | |
| 2075 void code_f2u(int reg) { code_d2u(reg); } | |
| 2076 void code_i2f(int reg) { code_i2d(reg); } | |
| 2077 void code_u2f(int reg) { code_u2d(reg); } | |
| 133 | 2078 |
| 107 | 2079 void code_drgvar(int e2,int d,int freg) |
| 82 | 2080 { |
| 109 | 2081 printf("\t%s %s\n",fload(d),((NMTBL*)cadr(e2))->nm); |
| 82 | 2082 } |
| 81 | 2083 |
| 2084 | |
| 107 | 2085 void code_drlvar(int e2,int d,int freg) |
| 82 | 2086 { |
| 119 | 2087 printf("\t%s %d(%%ebp)\n",fload(d),lvar(e2)); |
| 82 | 2088 } |
| 2089 | |
| 225 | 2090 void code_cmp_drgvar(int e2,int reg,int d) |
| 82 | 2091 { |
| 109 | 2092 printf("\tfcomp %s\n",((NMTBL*)cadr(e2))->nm); |
| 82 | 2093 } |
| 2094 | |
| 225 | 2095 void code_cmp_drlvar(int e2,int reg,int d) |
| 82 | 2096 { |
| 119 | 2097 printf("\tfcomp %d(%%ebp)\n",lvar(e2)); |
| 82 | 2098 } |
| 2099 | |
| 225 | 2100 void dtosop(int op,int reg,int e1) |
| 94 | 2101 { |
| 82 | 2102 switch(op) { |
| 133 | 2103 case FADD: |
| 82 | 2104 case DADD: printf("\tfaddp %%st,%%st(1)\n"); break; |
| 133 | 2105 case FSUB: |
| 85 | 2106 case DSUB: printf("\tfsubp %%st,%%st(1)\n"); break; |
| 133 | 2107 case FDIV: |
| 85 | 2108 case DDIV: printf("\tfdivp %%st,%%st(1)\n"); break; |
| 133 | 2109 case FMUL: |
| 82 | 2110 case DMUL: printf("\tfmulp %%st,%%st(1)\n"); break; |
| 133 | 2111 case FCMP: |
| 89 | 2112 case DCMP: |
| 82 | 2113 printf("\tfucompp\n"); |
| 2114 printf("\tfnstsw\t%%ax\n"); | |
| 2115 break; | |
| 2116 } | |
| 2117 } | |
| 81 | 2118 |
| 83 | 2119 void |
| 225 | 2120 code_dassop(int op,int reg,int d) { |
| 83 | 2121 /* we have lvalue in creg, applied floating value is in %st(0) */ |
| 102 | 2122 emit_dpop(d); /* do nothing for 387 */ |
| 83 | 2123 printf("\t%s (%s)\n",fload(d),register_name(creg,0)); |
| 225 | 2124 dtosop(op,reg,0); |
| 83 | 2125 printf("\t%s (%s)\n",fstore(d),register_name(creg,0)); |
| 2126 } | |
| 2127 | |
| 2128 void | |
| 219 | 2129 code_register_dassop(int reg,int op,int d) { |
| 2130 error(-1); | |
| 2131 } | |
| 2132 | |
| 2133 void | |
| 107 | 2134 code_dpreinc(int e1,int e2,int d,int freg) { |
| 83 | 2135 g_expr(e2); |
| 2136 printf("\t%s (%s)\n",fload(d),register_name(creg,0)); | |
| 2137 printf("\tfld1\n"); | |
| 87 | 2138 if (caddr(e1)>0) |
| 83 | 2139 printf("\tfaddp %%st,%%st(1)\n"); |
| 2140 else | |
| 2141 printf("\tfsubrp %%st,%%st(1)\n"); | |
| 2142 printf("\t%s (%s)\n",fstore(d),register_name(creg,0)); | |
| 2143 } | |
| 2144 | |
| 2145 void | |
| 107 | 2146 code_dpostinc(int e1,int e2,int d,int freg) { |
| 83 | 2147 g_expr(e2); |
| 2148 printf("\t%s (%s)\n",fload(d),register_name(creg,0)); | |
| 2149 if (use) | |
| 86 | 2150 printf("\t%s (%s)\n",fload(d),register_name(creg,0)); |
| 83 | 2151 printf("\tfld1\n"); |
| 87 | 2152 if (caddr(e1)>0) |
| 83 | 2153 printf("\tfaddp %%st,%%st(1)\n"); |
| 2154 else | |
| 2155 printf("\tfsubrp %%st,%%st(1)\n"); | |
| 87 | 2156 printf("\t%s (%s)\n",(use?fstore_u(d):fstore(d)),register_name(creg,0)); |
| 83 | 2157 } |
| 2158 | |
| 84 | 2159 void |
| 230 | 2160 drexpr(int e1, int e2,int l1, int op,int cond) |
| 84 | 2161 { |
| 236 | 2162 if (!cond) { |
| 230 | 2163 switch(op) { |
| 236 | 2164 case FOP+GT: |
| 2165 drexpr(e2,e1,l1,FOP+GE,1); return; | |
| 2166 case FOP+GE: | |
| 2167 drexpr(e2,e1,l1,FOP+GT,1); return; | |
| 2168 case FOP+EQ: | |
| 2169 op=FOP+NEQ; break; | |
| 2170 case FOP+NEQ: | |
| 2171 op=FOP+EQ; break; | |
| 2172 case DOP+GT: | |
| 2173 drexpr(e2,e1,l1,DOP+GE,1); return; | |
| 2174 case DOP+GE: | |
| 2175 drexpr(e2,e1,l1,DOP+GT,1); return; | |
| 2176 case DOP+EQ: | |
| 2177 op=DOP+NEQ; break; | |
| 2178 case DOP+NEQ: | |
| 2179 op=DOP+EQ; break; | |
| 230 | 2180 } |
| 2181 } | |
| 236 | 2182 |
| 89 | 2183 g_expr(list3(DCMP,e1,e2)); |
| 84 | 2184 switch(op) { |
| 2185 case DOP+GE: | |
| 133 | 2186 case FOP+GE: |
| 84 | 2187 printf("\ttestb\t$5,%%ah\n"); |
| 236 | 2188 printf("\tje\t_%d\n",l1); |
| 84 | 2189 break; |
| 2190 case DOP+GT: | |
| 133 | 2191 case FOP+GT: |
| 84 | 2192 printf("\ttestb\t$69,%%ah\n"); |
| 236 | 2193 printf("\tje\t_%d\n",l1); |
| 84 | 2194 break; |
| 2195 case DOP+EQ: | |
| 133 | 2196 case FOP+EQ: |
| 84 | 2197 printf("\tandb\t$69,%%ah\n"); |
| 2198 printf("\txorb\t$64,%%ah\n"); | |
| 236 | 2199 printf("\tje\t_%d\n",l1); |
| 84 | 2200 break; |
| 2201 case DOP+NEQ: | |
| 133 | 2202 case FOP+NEQ: |
| 84 | 2203 printf("\tandb\t$69,%%ah\n"); |
| 2204 printf("\txorb\t$64,%%ah\n"); | |
| 236 | 2205 printf("\tjne\t_%d\n",l1); |
| 84 | 2206 break; |
| 2207 } | |
| 2208 } | |
| 2209 | |
| 94 | 2210 void |
| 138 | 2211 code_dregister(int e2,int freg,int d) |
| 94 | 2212 { |
| 2213 error(-1); | |
| 2214 } | |
| 2215 | |
| 138 | 2216 void |
| 2217 code_cmp_dregister(int e2,int d) | |
| 94 | 2218 { |
| 235 | 2219 if (e2!=USE_CREG) |
| 2220 error(-1); | |
| 236 | 2221 printf("\tfldz\n"); |
| 235 | 2222 printf("\tfucompp\n"); |
| 2223 printf("\tfnstsw\t%%ax\n"); | |
| 2224 printf("\tandb\t$69,%%ah\n"); | |
| 2225 printf("\txorb\t$64,%%ah\n"); | |
| 82 | 2226 } |
| 81 | 2227 |
| 97 | 2228 int pop_fregister() |
| 82 | 2229 { |
| 94 | 2230 if (freg_sp<0) { error(-1); return -1;} |
| 2231 printf("# fpop: %d\n",freg_sp-1); | |
| 2232 return freg_stack[--freg_sp]; | |
| 82 | 2233 } |
| 81 | 2234 |
| 94 | 2235 int |
| 138 | 2236 emit_dpop(int d) |
| 94 | 2237 { |
| 2238 int xreg; | |
| 97 | 2239 if ((xreg=pop_fregister())==-1) { |
| 94 | 2240 } else if (xreg<= -REG_LVAR_OFFSET) { |
| 119 | 2241 code_drlvar(REG_LVAR_OFFSET+xreg,1,freg); |
| 117 | 2242 free_lvar(xreg+REG_LVAR_OFFSET); |
| 94 | 2243 /* pushed order is reversed. We don't need this for comutable |
| 2244 operator, but it is ok to do this. */ | |
| 2245 printf("\tfxch\t%%st(1)\n"); | |
| 2246 } | |
| 2247 return xreg; | |
| 2248 } | |
| 2249 | |
| 2250 | |
| 138 | 2251 void emit_dpop_free(int e1,int d) |
| 82 | 2252 { |
| 2253 } | |
| 81 | 2254 |
| 133 | 2255 void emit_dpush(int type) |
| 82 | 2256 { |
| 119 | 2257 if (freg_sp>=MAX_FPU_STACK) code_save_fstacks(); |
| 94 | 2258 if (freg_sp>MAX_MAX) error(-1); |
| 107 | 2259 freg_stack[freg_sp++]=-1; |
| 94 | 2260 printf("# fpush:%d\n",freg_sp); |
| 2261 } | |
| 2262 | |
| 195 | 2263 #endif |
| 2264 | |
| 94 | 2265 void |
| 2266 code_save_stacks() | |
| 2267 { | |
| 2268 /* temporal registers or stacks in fpu are saved in local variable */ | |
| 2269 int xreg,sp,screg; | |
| 2270 sp=reg_sp; | |
| 2271 while(sp-->0) { | |
| 2272 if ((xreg=reg_stack[sp])>=0) { | |
| 2273 screg=creg; | |
| 2274 if(creg!=xreg) { | |
| 2275 if (xreg!=dreg) free_register(xreg); | |
| 2276 creg = xreg; | |
| 2277 } | |
| 2278 code_assign_lvar( | |
| 119 | 2279 (reg_stack[sp]=new_lvar(size_of_int)),creg,0); |
| 94 | 2280 reg_stack[sp]= reg_stack[sp]-REG_LVAR_OFFSET; |
| 2281 regv[xreg]=0; | |
| 2282 creg=screg; | |
| 2283 } | |
| 2284 } | |
| 107 | 2285 } |
| 2286 | |
| 195 | 2287 #if FLOAT_CODE |
| 107 | 2288 void |
| 2289 code_save_fstacks() | |
| 2290 { | |
| 127 | 2291 int xreg,sp,uses; |
| 2292 uses = use; use = 0; | |
| 94 | 2293 sp=freg_sp; |
| 2294 while(sp-->0) { | |
| 2295 if ((xreg=freg_stack[sp])==-1) { | |
| 2296 code_dassign_lvar( | |
| 119 | 2297 (freg_stack[sp]=new_lvar(size_of_double)),freg,1); |
| 94 | 2298 freg_stack[sp]= freg_stack[sp]-REG_LVAR_OFFSET; |
| 2299 } | |
| 2300 } | |
| 127 | 2301 use = uses; |
| 82 | 2302 } |
| 195 | 2303 #endif |
| 2304 | |
| 2305 | |
| 2306 | |
| 2307 #if LONGLONG_CODE | |
| 2308 | |
| 2309 | |
| 2310 /* 64bit int part */ | |
| 2311 | |
| 237 | 2312 static void |
| 2313 pcond(char *s,int l1) | |
| 195 | 2314 { |
| 237 | 2315 printf("\tj%s\t_%d\n",s,l1); |
| 195 | 2316 } |
| 2317 | |
| 240 | 2318 void |
| 2319 lrexpr(int e1, int e2,int l1, int op,int cond) | |
| 195 | 2320 { |
| 237 | 2321 int e3; |
| 2322 g_expr(e1); | |
| 2323 emit_lpush(); | |
| 2324 g_expr(e2); | |
| 240 | 2325 ltosop(LSUB,USE_CREG,(e3==emit_lpop())); |
| 242 | 2326 // printf("\tpopl %%eax\n\tpopl %%edx\n"); // emit_pop_free |
| 237 | 2327 switch(op) { |
| 2328 case LOP+GT: | |
| 2329 pcond(code_gt(cond),l1); break; | |
| 2330 case LOP+GE: | |
| 2331 pcond(code_ge(cond),l1); break; | |
| 2332 case LOP+EQ: | |
| 2333 pcond(code_eq(cond),l1); break; | |
| 2334 case LOP+NEQ: | |
| 2335 pcond(code_eq(!cond),l1); break; | |
| 2336 case LOP+LT: | |
| 2337 pcond(code_ge(!cond),l1); break; | |
| 2338 case LOP+LE: | |
| 2339 pcond(code_gt(!cond),l1); break; | |
| 2340 case LOP+UGT: | |
| 2341 pcond(code_ugt(cond),l1); break; | |
| 2342 case LOP+UGE: | |
| 2343 pcond(code_uge(cond),l1); break; | |
| 2344 default: | |
| 2345 error(-1); | |
| 2346 } | |
| 195 | 2347 } |
| 2348 | |
| 2349 int emit_lpop() | |
| 2350 { | |
| 237 | 2351 return 0; |
| 195 | 2352 } |
| 2353 | |
| 2354 void code_lregister(int e2,int reg) | |
| 2355 { | |
| 238 | 2356 use_longlong(reg); |
| 239 | 2357 if (reg!=REG_L) { |
| 240 | 2358 printf("\tmovl %%esi,%s\n",l_eax(reg)); |
| 239 | 2359 printf("\tmovl %%edi,%s\n",l_edx(reg)); |
| 2360 } | |
| 195 | 2361 } |
| 2362 | |
| 2363 void code_cmp_lregister(int reg) | |
| 2364 { | |
| 238 | 2365 char *crn; |
| 2366 use_int(reg); | |
| 2367 crn = register_name(reg,0); | |
| 239 | 2368 printf("\tmovl %%esi,%s\n",crn); |
| 2369 printf("\torl %%edi,%s\n",crn); | |
| 238 | 2370 printf("\ttestl %s,%s\n",crn,crn); |
| 195 | 2371 } |
| 2372 | |
| 2373 void code_cmp_lrgvar(int e1,int e2) | |
| 2374 { | |
| 237 | 2375 char *n,*crn; |
| 2376 n = ((NMTBL*)cadr(e1))->nm; | |
| 2377 use_int(e2); | |
| 2378 crn = register_name(e2,0); | |
| 2379 printf("\tmovl %s,%s\n",n,crn); | |
| 2380 printf("\torl %s+4,%s\n",n,crn); | |
| 238 | 2381 printf("\ttestl %s,%s\n",crn,crn); |
| 195 | 2382 } |
| 2383 | |
| 2384 void code_cmp_lrlvar(int e1,int e2) | |
| 2385 { | |
| 237 | 2386 char *crn; |
| 2387 use_int(e2); | |
| 2388 crn = register_name(e2,0); | |
| 239 | 2389 printf("\tmovl %d(%%ebp),%s\n",lvar(e1),crn); |
| 2390 printf("\torl %d(%%ebp),%s\n",lvar(e1)+4,crn); | |
| 2391 printf("\ttestl %s,%s\n",crn,crn); | |
| 195 | 2392 } |
| 2393 | |
| 2394 void code_lassign(int e1,int e2) | |
| 2395 { | |
| 237 | 2396 char *rn; |
| 2397 // e1 = e2 | |
| 2398 use_longlong(e2); | |
| 239 | 2399 rn = register_name(e1,0); |
| 2400 printf("\tmovl %s,(%s)\n",l_eax(e2),rn); | |
| 2401 printf("\tmovl %s,4(%s)\n",l_edx(e2),rn); | |
| 195 | 2402 } |
| 2403 | |
| 2404 void code_lassign_gvar(int e1,int e2) | |
| 2405 { | |
| 239 | 2406 char *n; |
| 237 | 2407 n = ((NMTBL*)cadr(e1))->nm; |
| 2408 use_longlong(e2); | |
| 239 | 2409 printf("\tmovl %s,%s\n",l_eax(e2),n); |
| 2410 printf("\tmovl %s,%s+4\n",l_edx(e2),n); | |
| 195 | 2411 } |
| 2412 | |
| 2413 void code_lassign_lvar(int e1,int e2) | |
| 2414 { | |
| 237 | 2415 use_longlong(e2); |
| 239 | 2416 printf("\tmovl %s,%d(%%ebp)\n",l_eax(e2),lvar(e1)); |
| 2417 printf("\tmovl %s,%d(%%ebp)\n",l_edx(e2),lvar(e1)+4); | |
| 195 | 2418 } |
| 2419 | |
| 2420 void code_lassign_lregister(int e2,int reg) | |
| 2421 { | |
| 242 | 2422 // e2 = reg |
| 238 | 2423 use_longlong(reg); |
| 239 | 2424 if (e2!=reg) { |
| 242 | 2425 printf("\tmovl %s,%s\n",l_eax(reg),l_eax(e2)); |
| 2426 printf("\tmovl %s,%s\n",l_edx(reg),l_edx(e2)); | |
| 239 | 2427 } |
| 237 | 2428 } |
| 195 | 2429 |
| 237 | 2430 void |
| 2431 code_lconst(int e1,int creg) | |
| 2432 { | |
| 2433 use_longlong(creg); | |
| 239 | 2434 printf("\tmovl $%d,%s\n",code_l1(lcadr(e1)),l_eax(creg)); |
| 2435 printf("\tmovl $%d,%s\n",code_l2(lcadr(e1)),l_edx(creg)); | |
| 195 | 2436 } |
| 2437 | |
| 212 | 2438 void code_lneg(int e1) |
| 195 | 2439 { |
| 239 | 2440 use_longlong(e1); |
| 2441 printf("\tnegl %s\n",l_eax(e1)); | |
| 2442 printf("\tadcl $0,%s\n",l_edx(e1)); | |
| 2443 printf("\tnegl %s\n",l_edx(e1)); | |
| 195 | 2444 } |
| 2445 | |
| 2446 void code_lrgvar(int e1,int e2) | |
| 2447 { | |
| 239 | 2448 char *n; |
| 237 | 2449 n = ((NMTBL*)cadr(e1))->nm; |
| 2450 use_longlong(e2); | |
| 239 | 2451 printf("\tmovl %s,%s\n",n,l_eax(e2)); |
| 2452 printf("\tmovl %s+4,%s\n",n,l_edx(e2)); | |
| 195 | 2453 } |
| 2454 | |
| 2455 void code_lrlvar(int e1,int e2) | |
| 2456 { | |
| 237 | 2457 use_longlong(e2); |
| 239 | 2458 printf("\tmovl %d(%%ebp),%s\n",lvar(e1),l_eax(e2)); |
| 2459 printf("\tmovl %d(%%ebp),%s\n",lvar(e1)+4,l_edx(e2)); | |
| 195 | 2460 } |
| 2461 | |
| 242 | 2462 #define check_lreg(reg) if (reg==REG_L) code_lassign_lregister(reg,REG_LCREG) |
| 239 | 2463 |
| 240 | 2464 void |
| 2465 ltosop(int op,int reg,int e2) | |
| 195 | 2466 { |
| 237 | 2467 char *opl,*oph,*call; |
| 2468 int lb; | |
| 195 | 2469 |
| 239 | 2470 // e2 (operand) is on the top of the stack |
| 237 | 2471 use_longlong(reg); |
| 2472 opl = 0; call=0; | |
| 2473 | |
| 2474 switch(op) { | |
| 2475 case LLSHIFT: | |
| 2476 case LULSHIFT: | |
| 239 | 2477 printf("\tmovl %%ecx,4(%%esp)\n"); |
| 2478 printf("\tpopl %%ecx\n"); | |
| 237 | 2479 printf("\tshldl %%eax,%%edx\n"); |
| 2480 printf("\tsall %%cl,%%eax\n"); | |
| 2481 printf("\ttestb $32,%%cl\n"); | |
| 2482 printf("\tje\t_%d\n",(lb=fwdlabel())); | |
| 2483 printf("\tmovl %%eax,%%edx\n"); | |
| 2484 printf("\txorl %%eax,%%eax\n"); | |
| 2485 fwddef(lb); | |
| 2486 printf("\tpopl %%ecx\n"); | |
| 242 | 2487 check_lreg(reg); |
| 237 | 2488 return; |
| 2489 case LRSHIFT: | |
| 239 | 2490 printf("\tmovl %%ecx,4(%%esp)\n"); |
| 2491 printf("\tpopl %%ecx\n"); | |
| 240 | 2492 printf("\tshrdl %%edx,%%eax\n"); |
| 237 | 2493 printf("\tsarl %%cl,%%eax\n"); |
| 2494 printf("\ttestb $32,%%cl\n"); | |
| 2495 printf("\tje\t_%d\n",(lb=fwdlabel())); | |
| 2496 printf("\tmovl %%edx,%%eax\n"); | |
| 2497 printf("\tsarl $31,%%edx\n"); | |
| 2498 fwddef(lb); | |
| 2499 printf("\tpopl %%ecx\n"); | |
| 242 | 2500 check_lreg(reg); |
| 237 | 2501 return; |
| 2502 case LURSHIFT: | |
| 239 | 2503 printf("\tmovl %%ecx,4(%%esp)\n"); |
| 2504 printf("\tpopl %%ecx\n"); | |
| 240 | 2505 printf("\tshrdl %%edx,%%eax\n"); |
| 237 | 2506 printf("\tshrl %%cl,%%eax\n"); |
| 2507 printf("\ttestb $32,%%cl\n"); | |
| 2508 printf("\tje\t_%d\n",(lb=fwdlabel())); | |
| 2509 printf("\tmovl %%edx,%%eax\n"); | |
| 2510 printf("\txorl %%edx,%%edx\n"); | |
| 2511 fwddef(lb); | |
| 2512 printf("\tpopl %%ecx\n"); | |
| 242 | 2513 check_lreg(reg); |
| 237 | 2514 return; |
| 2515 } | |
| 2516 switch(op) { | |
| 239 | 2517 case LADD: opl="addl";oph="adcl"; break; |
| 2518 case LSUB: opl="subl";oph="sbbl"; break; | |
| 237 | 2519 case LBAND: opl=oph="andl"; break; |
| 2520 case LEOR: opl=oph="xorl"; break; | |
| 2521 case LBOR: opl=oph="orl"; break; | |
| 2522 case LMUL: | |
| 2523 case LUMUL: | |
| 239 | 2524 printf("\tpushl %%edx\n"); |
| 2525 printf("\tpushl %%eax\n"); | |
| 2526 printf("\tpushl %%ecx\n"); | |
| 242 | 2527 // 0 saved ecx |
| 237 | 2528 // 4 c_l |
| 2529 // 8 c_h | |
| 2530 // 12 o_l | |
| 2531 // 16 o_h | |
| 2532 printf("\tmull 12(%%esp)\n"); // c_l*o_l -> %edx,%eax | |
| 2533 printf("\tmovl 4(%%esp),%%ecx\n"); // c_l->%ecx | |
| 2534 printf("\timull 16(%%esp),%%ecx\n"); // c_l*o_h->%ecx | |
| 239 | 2535 printf("\taddl %%ecx,%%edx\n"); // %edx+%ecx->%edx |
| 237 | 2536 printf("\tmovl 8(%%esp),%%ecx\n"); // c_h->%ecx |
| 2537 printf("\timull 12(%%esp),%%ecx\n"); // c_h*o_l->%ecx | |
| 239 | 2538 printf("\taddl %%ecx,%%edx\n"); // %edx+%ecx->%edx |
| 237 | 2539 printf("\tpopl %%ecx\n"); |
| 242 | 2540 // printf("\taddl $8,%%esp\n"); |
| 2541 printf("\tlea 16(%%esp),%%esp\n"); | |
| 237 | 2542 return; |
| 2543 case LDIV: call="__divdi3"; break; | |
| 2544 case LUDIV: call="__udivdi3"; break; | |
| 2545 case LMOD: call="__moddi3"; break; | |
| 2546 case LUMOD: call="__umoddi3"; break; | |
| 2547 default: error(-1); | |
| 2548 } | |
| 2549 if (opl) { | |
| 2550 printf("\t%s (%%esp),%%eax\n\t%s 4(%%esp),%%edx\n",opl,oph); | |
| 242 | 2551 printf("\tlea 8(%%esp),%%esp\n"); |
| 2552 check_lreg(reg); | |
| 239 | 2553 } else if (call) { |
| 2554 printf("\tpushl %%edx\n"); | |
| 2555 printf("\tpushl %%eax\n"); | |
| 237 | 2556 printf("\tcall %s\n",call); |
| 242 | 2557 // printf("\taddl $8,%%esp\n"); |
| 2558 printf("\tlea 16(%%esp),%%esp\n"); | |
| 2559 check_lreg(reg); | |
| 239 | 2560 } else { |
| 2561 error(-1); | |
| 237 | 2562 } |
| 195 | 2563 } |
| 2564 | |
| 237 | 2565 int code_lconst_op_p(int op,int e) { |
| 240 | 2566 long long l; |
| 2567 if (car(e)==CONST) l = cadr(e); | |
| 2568 else if (car(e)==LCONST) l = lcadr(e); | |
| 2569 else return 0; | |
| 2570 | |
| 237 | 2571 switch(op) { |
| 2572 case LLSHIFT: | |
| 2573 case LULSHIFT: | |
| 2574 case LRSHIFT: | |
| 2575 case LURSHIFT: | |
| 2576 return (0<=l&&l<=32); | |
| 2577 case LADD: | |
| 2578 case LSUB: | |
| 239 | 2579 case LBAND: |
| 237 | 2580 case LEOR: |
| 2581 case LBOR: | |
| 2582 return 1; | |
| 2583 default: | |
| 2584 return 0; | |
| 2585 } | |
| 2586 } | |
| 2587 | |
| 2588 void loprtc(int op,int reg,int e) { | |
| 2589 char *opl,*oph; | |
| 240 | 2590 int vl; |
| 2591 int vh; | |
| 2592 long long l; | |
| 2593 | |
| 2594 if (car(e)==CONST) l = cadr(e); | |
| 2595 else if (car(e)==LCONST) l = lcadr(e); | |
| 2596 else error(-1); | |
| 2597 | |
| 2598 vl = code_l1(l); | |
| 2599 vh = code_l2(l); | |
| 237 | 2600 |
| 2601 use_longlong(reg); | |
| 2602 opl = 0; | |
| 2603 | |
| 2604 switch(op) { | |
| 2605 case LLSHIFT: | |
| 2606 case LULSHIFT: | |
| 2607 printf("\tshldl $%d,%%eax,%%edx\n",vl); | |
| 2608 printf("\tsall $%d,%%eax\n",vl); | |
| 242 | 2609 check_lreg(reg); |
| 237 | 2610 return; |
| 2611 case LRSHIFT: | |
| 242 | 2612 printf("\tshrdl $%d,%%edx,%%eax\n",vl); |
| 2613 printf("\tsarl $%d,%%edx\n",vl); | |
| 2614 check_lreg(reg); | |
| 237 | 2615 return; |
| 2616 case LURSHIFT: | |
| 242 | 2617 printf("\tshrdl $%d,%%edx,%%eax\n",vl); |
| 2618 printf("\tshrl $%d,%%edx\n",vl); | |
| 2619 check_lreg(reg); | |
| 237 | 2620 return; |
| 2621 } | |
| 2622 switch(op) { | |
| 2623 case LADD: opl="addl";oph="adcl"; break; | |
| 239 | 2624 case LSUB: opl="subl";oph="sbbl"; break; |
| 237 | 2625 case LBAND: opl=oph="andl"; break; |
| 2626 case LEOR: opl=oph="xorl"; break; | |
| 2627 case LBOR: opl=oph="orl"; break; | |
| 2628 default: error(-1); | |
| 2629 } | |
| 239 | 2630 printf("\t%s $%d,%%eax\n\t%s $%d,%%edx\n",opl,vl,oph,vh); |
| 242 | 2631 check_lreg(reg); |
| 237 | 2632 } |
| 213 | 2633 |
| 195 | 2634 void emit_lpop_free(int e1) |
| 2635 { | |
| 242 | 2636 // printf("\taddl $8,%%esp\n"); |
| 195 | 2637 } |
| 2638 | |
| 2639 void emit_lpush() | |
| 2640 { | |
| 241 | 2641 printf("\tpushl %%edx\n\tpushl %%eax\n"); |
| 195 | 2642 } |
| 2643 | |
| 239 | 2644 void code_i2ll(int reg) |
| 195 | 2645 { |
| 240 | 2646 int reg0 = USE_CREG; |
| 2647 use_register(creg,REG_EAX,1); | |
| 2648 regv[creg]=0; | |
| 2649 use_longlong(reg0); | |
| 237 | 2650 printf("\tcltd\n"); |
| 242 | 2651 check_lreg(reg); |
| 240 | 2652 lreg = creg = reg0; |
| 195 | 2653 } |
| 2654 | |
| 239 | 2655 void code_i2ull(int reg) |
| 195 | 2656 { |
| 239 | 2657 code_i2ll(reg); |
| 195 | 2658 } |
| 2659 | |
| 239 | 2660 void code_u2ll(int reg) |
| 195 | 2661 { |
| 240 | 2662 int reg0 = USE_CREG; |
| 2663 use_register(creg,REG_EAX,1); | |
| 2664 regv[creg]=0; | |
| 2665 use_longlong(reg0); | |
| 237 | 2666 printf("\txorl %%edx,%%edx\n"); |
| 242 | 2667 check_lreg(reg); |
| 240 | 2668 lreg = creg = reg0; |
| 195 | 2669 } |
| 2670 | |
| 239 | 2671 void code_u2ull(int reg) |
| 195 | 2672 { |
| 239 | 2673 code_u2ll(reg); |
| 195 | 2674 } |
| 2675 | |
| 239 | 2676 void code_ll2i(int reg) |
| 195 | 2677 { |
| 239 | 2678 use_int(reg); |
| 237 | 2679 if (virtual(REG_EAX)!=reg) |
| 2680 printf("\tmovl %%eax,%s\n",register_name(creg,0)); | |
| 195 | 2681 } |
| 2682 | |
| 239 | 2683 void code_ll2u(int reg) |
| 195 | 2684 { |
| 239 | 2685 code_ll2i(reg); |
| 195 | 2686 } |
| 2687 | |
| 239 | 2688 void code_ull2i(int reg) |
| 195 | 2689 { |
| 239 | 2690 code_ll2i(reg); |
| 195 | 2691 } |
| 2692 | |
| 239 | 2693 void code_ull2u(int reg) |
| 195 | 2694 { |
| 239 | 2695 code_ll2i(reg); |
| 195 | 2696 } |
| 2697 | |
| 2698 #if FLOAT_CODE | |
| 239 | 2699 void code_d2ll(int reg) |
| 195 | 2700 { |
| 239 | 2701 use_longlong(reg); |
| 237 | 2702 printf("\tsubl $40,%%esp\n"); |
| 2703 printf("\tfnstcw 2(%%esp)\n"); | |
| 2704 printf("\tmovw 2(%%esp),%%ax\n"); | |
| 2705 printf("\torw $3072,%%ax\n"); | |
| 2706 printf("\tmovw %%ax,0(%%esp)\n"); | |
| 2707 printf("\tfldcw 0(%%esp)\n"); | |
| 2708 printf("\tfistpll 12(%%esp)\n"); | |
| 2709 printf("\tfldcw 2(%%esp)\n"); | |
| 239 | 2710 printf("\tmovl 12(%%esp),%%eax\n"); |
| 2711 printf("\tmovl 16(%%esp),%%edx\n"); | |
| 237 | 2712 printf("\taddl $40,%%esp\n"); |
| 195 | 2713 } |
| 2714 | |
| 239 | 2715 void code_d2ull(int reg) |
| 195 | 2716 { |
| 239 | 2717 use_longlong(reg); |
| 237 | 2718 printf("\tsubl $16,%%esp\n"); |
| 2719 printf("\tfstpl (%%esp)\n"); | |
| 2720 printf("\tcall __fixunsdfdi\n"); | |
| 2721 printf("\taddl $16,%%esp\n"); | |
| 195 | 2722 } |
| 2723 | |
| 239 | 2724 void code_f2ll(int reg) |
| 195 | 2725 { |
| 239 | 2726 code_d2ll(reg); |
| 195 | 2727 } |
| 2728 | |
| 239 | 2729 void code_f2ull(int reg) |
| 195 | 2730 { |
| 239 | 2731 use_longlong(reg); |
| 237 | 2732 printf("\tsubl $16,%%esp\n"); |
| 242 | 2733 printf("\tfstps (%%esp)\n"); |
| 237 | 2734 printf("\tcall __fixunssfdi\n"); |
| 2735 printf("\taddl $16,%%esp\n"); | |
| 195 | 2736 } |
| 2737 | |
| 239 | 2738 void code_ll2d(int reg) |
| 195 | 2739 { |
| 237 | 2740 printf("\tsubl $8,%%esp\n"); |
| 2741 printf("\tmovl %%eax,(%%esp)\n"); | |
| 2742 printf("\tmovl %%edx,4(%%esp)\n"); | |
| 2743 printf("\tfildll (%%esp)\n"); | |
| 2744 printf("\taddl $8,%%esp\n"); | |
| 195 | 2745 } |
| 2746 | |
| 239 | 2747 void code_ll2f(int reg) |
| 195 | 2748 { |
| 239 | 2749 code_ll2d(reg); |
| 195 | 2750 } |
| 2751 | |
| 239 | 2752 void code_ull2d(int reg) |
| 195 | 2753 { |
| 239 | 2754 code_ll2d(reg); |
| 195 | 2755 } |
| 2756 | |
| 239 | 2757 void code_ull2f(int reg) |
| 195 | 2758 { |
| 239 | 2759 code_ll2d(reg); |
| 195 | 2760 } |
| 2761 | |
| 2762 #endif | |
| 2763 | |
| 2764 | |
| 2765 void code_lpreinc(int e1,int e2,int reg) | |
| 2766 { | |
| 238 | 2767 int dir = caddr(e1); |
| 2768 int creg0; | |
| 2769 char *crn; | |
| 2770 if (car(e2)==LREGISTER) { | |
| 2771 use_longlong(reg); | |
| 239 | 2772 printf("\taddl $%d,%%esi\n",dir); |
| 2773 printf("\tadcl $%d,%%edi\n",dir>0?0:-1); | |
| 2774 if (reg!=REG_L) { | |
| 2775 code_lregister(REG_L,reg); | |
| 2776 } | |
| 238 | 2777 return; |
| 2778 } | |
| 2779 g_expr(e2); | |
| 2780 crn = register_name(creg0=creg,0); | |
| 2781 printf("\taddl $%d,(%s)\n",dir,crn); | |
| 239 | 2782 printf("\tadcl $%d,4(%s)\n",dir>0?0:-1,crn); |
| 238 | 2783 use_longlong(reg); |
| 239 | 2784 lload(creg0,0,reg); |
| 195 | 2785 } |
| 2786 | |
| 2787 void code_lpostinc(int e1,int e2,int reg) | |
| 2788 { | |
| 238 | 2789 int dir = caddr(e1); |
| 2790 int creg0; | |
| 2791 char *crn; | |
| 2792 if (car(e2)==LREGISTER) { | |
| 2793 use_longlong(reg); | |
| 239 | 2794 if (reg!=REG_L) { |
| 2795 code_lregister(REG_L,reg); | |
| 2796 } | |
| 2797 printf("\taddl $%d,%%esi\n",dir); | |
| 2798 printf("\tadcl $%d,%%edi\n",dir>0?0:-1); | |
| 238 | 2799 return; |
| 2800 } | |
| 2801 g_expr(e2); | |
| 2802 crn = register_name(creg0=creg,0); | |
| 2803 printf("\taddl $%d,(%s)\n",dir,crn); | |
| 239 | 2804 printf("\tadcl $%d,4(%s)\n",dir>0?0:-1,crn); |
| 238 | 2805 use_longlong(reg); |
| 239 | 2806 lload(creg0,0,reg); |
| 2807 printf("\taddl $%d,%s\n",-dir,l_eax(reg)); | |
| 2808 printf("\tadcl $%d,%s\n",-dir>0?0:-1,l_edx(reg)); | |
| 195 | 2809 } |
| 2810 | |
| 225 | 2811 void code_lassop(int op,int reg) |
| 195 | 2812 { |
| 238 | 2813 error(-1); |
| 195 | 2814 } |
| 2815 | |
| 219 | 2816 void |
| 2817 code_register_lassop(int reg,int op) { | |
| 238 | 2818 error(-1); |
| 219 | 2819 } |
| 2820 | |
| 195 | 2821 |
| 2822 #endif | |
| 81 | 2823 |
| 61 | 2824 /* end */ |
| 195 | 2825 |