Mercurial > hg > CbC > old > device
annotate mc-code-mips.c @ 196:5f70abd9453d
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| author | kono |
|---|---|
| date | Wed, 07 Apr 2004 21:14:19 +0900 |
| parents | c193120ee2a6 |
| children | 28baf6cd9ad1 |
| rev | line source |
|---|---|
| 131 | 1 /* Micro-C Code Generatation Part for MIPS (PS2Linux) */ |
| 130 | 2 /* $Id$ */ |
| 3 | |
| 4 #define EXTERN extern | |
| 5 #include "mc.h" | |
| 6 #include "mc-code.h" | |
| 7 #include "mc-codegen.h" | |
| 8 | |
| 173 | 9 char *l_include_path[] = { |
| 10 "/usr/include/", | |
| 11 0 | |
| 12 }; | |
| 13 | |
| 130 | 14 #define TEXT_EMIT_MODE 0 |
| 15 #define DATA_EMIT_MODE 1 | |
| 16 #define RODATA_EMIT_MODE 2 | |
| 17 | |
| 18 static void data_mode(char *name); | |
| 163 | 19 static void ld_indexx(int byte, int n, int xreg,int sign); |
| 130 | 20 static void local_table(void); |
| 21 static void shift(char *op, int reg); | |
| 22 static int struct_push(int e4,int t,int arg); | |
| 23 | |
| 24 static int output_mode = TEXT_EMIT_MODE; | |
| 25 static int data_alignment = 0; | |
| 26 | |
| 27 static int code_disp_label; | |
| 152 | 28 static int disp_label; |
| 130 | 29 static int r1_offset_label; |
| 30 static int lvar_offset_label; | |
| 152 | 31 static int cprestore_label; |
| 130 | 32 |
| 33 static int reg_save; | |
| 34 static int freg_save; | |
| 35 | |
| 149 | 36 static int freg,ireg,dreg; |
| 148 | 37 |
| 38 /* mips requires two registers for compare */ | |
| 39 static int cmpreg = -1; | |
| 40 | |
| 130 | 41 int size_of_int = 4; |
| 42 int size_of_float = 4; | |
| 43 int size_of_double = 8; | |
| 44 int size_of_longlong = 8; | |
| 45 int endian = 1; | |
| 46 | |
| 148 | 47 int reg_sp; /* REGister Stack-Pointer */ |
| 48 int reg_stack[MAX_MAX]; /* 実際のレジスタの領域 */ | |
| 49 | |
| 50 /* floating point registers */ | |
| 51 | |
| 52 int freg_sp; /* floating point REGister Stack-Pointer */ | |
| 53 int freg_stack[MAX_MAX]; /* 実際のレジスタの領域 */ | |
| 54 | |
| 55 /* double floating point registers */ | |
| 56 | |
| 57 int dreg_sp; /* floating point REGister Stack-Pointer */ | |
| 58 int dreg_stack[MAX_MAX]; /* 実際のレジスタの領域 */ | |
| 130 | 59 |
| 60 #define REG_fp 1 | |
| 61 #define REG_sp 30 | |
| 62 #define REG_VAR_BASE 29 | |
| 131 | 63 #define REG_VAR_MIN 18 |
| 64 #define MIN_TMP_REG 4 | |
| 65 #define MAX_TMP_REG 11 | |
| 130 | 66 |
| 149 | 67 #define DREG_VAR_BASE 29 |
| 68 #define DREG_VAR_MIN 18 | |
| 69 #define MIN_TMP_DREG 4 | |
| 152 | 70 #define MAX_TMP_DREG 17 |
| 149 | 71 |
| 130 | 72 #define PTRC_REG 3 |
| 73 | |
| 74 #define FREG_VAR_BASE 31 | |
| 131 | 75 #define FREG_VAR_MIN 20 |
| 130 | 76 #define MIN_TMP_FREG 1 |
| 131 | 77 #define MAX_TMP_FREG 14 |
| 130 | 78 |
| 79 #define RET_REGISTER 3 | |
| 148 | 80 #define RET_FREGISTER (1+FREG_OFFSET) |
| 81 #define RET_DREGISTER (1+DREG_OFFSET) | |
| 130 | 82 |
| 148 | 83 int MAX_REGISTER=30; /* PowerPCのレジスタを10個まで使う*/ |
| 130 | 84 int MAX_FREGISTER=31; |
| 148 | 85 int MAX_DREGISTER=16; |
| 86 #define REAL_MAX_REGISTER 32 /* PowerPCのレジスタが32ということ*/ | |
| 87 #define REAL_MAX_FREGISTER 32 /* PowerPCのFレジスタが32ということ*/ | |
| 88 #define REAL_MAX_DREGISTER 31 /* PowerPCのDレジスタ番号が31ということ*/ | |
| 89 | |
| 90 #define FREG_OFFSET REAL_MAX_REGISTER | |
| 91 #define DREG_OFFSET (REAL_MAX_REGISTER+REAL_MAX_FREGISTER ) | |
| 130 | 92 |
| 131 | 93 int MAX_INPUT_REGISTER_VAR = 7-MIN_TMP_REG; |
| 94 int MAX_CODE_INPUT_REGISTER_VAR = 7-MIN_TMP_REG; | |
| 130 | 95 int MAX_INPUT_DREGISTER_VAR = 14-MIN_TMP_FREG; |
| 148 | 96 int MAX_INPUT_FREGISTER_VAR = 14-MIN_TMP_FREG; |
| 130 | 97 int MAX_CODE_INPUT_DREGISTER_VAR = 14-MIN_TMP_FREG; |
| 148 | 98 int MAX_CODE_INPUT_FREGISTER_VAR = 14-MIN_TMP_FREG; |
| 130 | 99 |
| 100 #define CREG_REGISTER MAX_TMP_REG | |
| 148 | 101 #define FREG_FREGISTER (MAX_TMP_FREG+FREG_OFFSET) |
| 149 | 102 #define DREG_DREGISTER (2+DREG_OFFSET) |
| 145 | 103 |
| 149 | 104 int powerpc_regs[REAL_MAX_REGISTER+REAL_MAX_FREGISTER+REAL_MAX_DREGISTER]; |
| 105 int powerpc_regv[REAL_MAX_REGISTER+REAL_MAX_FREGISTER+REAL_MAX_DREGISTER]; | |
| 138 | 106 |
| 151 | 107 int dreg_pair0[REAL_MAX_DREGISTER] = { |
| 148 | 108 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30 |
| 109 }; | |
| 151 | 110 int dreg_pair1[REAL_MAX_DREGISTER] = { |
| 148 | 111 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31 |
| 112 }; | |
| 130 | 113 |
| 148 | 114 int *regv = powerpc_regv; |
| 115 int *regs = powerpc_regs; | |
| 130 | 116 |
| 117 static int max_reg_var, max_freg_var; | |
| 148 | 118 static int cond_reg=-1,cond_freg=-1,cond_dreg=-1; |
| 130 | 119 |
| 120 static char *reg_name[] = { | |
| 131 | 121 "$0","$1","$2","$3","$4","$5","$6","$7","$8","$9", |
| 122 "$10","$11","$12","$13","$14","$15","$16","$17","$18","$19", | |
| 123 "$20","$21","$22","$23","$24","$25","$26","$27","$28","$29", | |
| 148 | 124 "$30","$31", |
| 131 | 125 "$f0","$f1","$f2","$f3","$f4","$f5","$f6","$f7","$f8","$f9", |
| 126 "$f10","$f11","$f12","$f13","$f14","$f15","$f16","$f17","$f18","$f19", | |
| 127 "$f20","$f21","$f22","$f23","$f24","$f25","$f26","$f27","$f28","$f29", | |
| 128 "$f30","$f31" | |
| 130 | 129 }; |
| 130 | |
| 148 | 131 |
| 132 #define register_name(i) reg_name0(i) | |
| 133 #define fregister_name(i) reg_name0(i) | |
| 149 | 134 #define dregister_name0(i) reg_name1(i,dreg_pair0) |
| 135 #define dregister_name1(i) reg_name1(i,dreg_pair1) | |
| 148 | 136 |
| 149 | 137 static char * |
| 148 | 138 reg_name0(int i) |
| 139 { | |
| 140 if (i<=REAL_MAX_REGISTER+REAL_MAX_FREGISTER) | |
| 141 return reg_name[i]; | |
| 149 | 142 else { |
| 148 | 143 error(-1); |
| 149 | 144 return reg_name[0]; |
| 145 } | |
| 148 | 146 } |
| 147 | |
| 149 | 148 static char * |
| 151 | 149 reg_name1(int i,int *d) |
| 149 | 150 { |
| 151 if (i<=REAL_MAX_REGISTER+REAL_MAX_FREGISTER) { | |
| 152 error(-1); | |
| 153 return reg_name[0]; | |
| 154 } else | |
| 155 return reg_name[d[i-DREG_OFFSET]]; | |
| 156 } | |
| 157 | |
| 158 | |
| 148 | 159 #define is_int_reg(i) (0<=i&&i<REAL_MAX_REGISTER) |
| 160 #define is_float_reg(i) (REAL_MAX_REGISTER<=i&&i<REAL_MAX_FREGISTER+REAL_MAX_REGISTER) | |
| 149 | 161 #define is_double_reg(i) (REAL_MAX_REGISTER+REAL_MAX_FREGISTER<=i&&i<REAL_MAX_FREGISTER+REAL_MAX_REGISTER+REAL_MAX_DREGISTER) |
| 148 | 162 |
| 130 | 163 |
| 148 | 164 int use_int(int i) { |
| 165 if (!is_int_reg(i)) i = ireg; | |
| 166 if (!regs[i]) regs[i]=1; | |
| 167 return i; | |
| 168 } | |
| 169 | |
| 170 int use_float(int i) { | |
| 171 if (!is_float_reg(i)) i = freg; | |
| 172 if (!regs[i]) regs[i]=1; | |
| 173 return i; | |
| 174 } | |
| 175 | |
| 176 int use_double(int i) { | |
| 177 if (!is_double_reg(i)) i = dreg; | |
| 178 if (!regs[i]) regs[i]=1; | |
| 179 return i; | |
| 180 } | |
| 130 | 181 |
| 195 | 182 int use_longlong(int i) { |
| 183 return i; | |
| 184 } | |
| 185 | |
| 186 #if FLOAT_CODE | |
| 149 | 187 static int code_d1(double d); |
| 188 static int code_d2(double d); | |
| 195 | 189 #endif |
| 149 | 190 |
| 130 | 191 static void code_save_stacks(); |
| 192 static void code_save_input_registers(); | |
| 193 static void set_creg(int,int); | |
| 194 static void set_freg(int,int); | |
| 148 | 195 static void set_dreg(int,int); |
| 130 | 196 |
|
136
069960078249
remove redundant funcall argument for prototyped code in PowerPC case.
kono
parents:
133
diff
changeset
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197 static int mask_label; |
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069960078249
remove redundant funcall argument for prototyped code in PowerPC case.
kono
parents:
133
diff
changeset
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198 static int mask1_label; |
|
069960078249
remove redundant funcall argument for prototyped code in PowerPC case.
kono
parents:
133
diff
changeset
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199 static int fmask_label; |
|
069960078249
remove redundant funcall argument for prototyped code in PowerPC case.
kono
parents:
133
diff
changeset
|
200 static int fmask1_label; |
|
069960078249
remove redundant funcall argument for prototyped code in PowerPC case.
kono
parents:
133
diff
changeset
|
201 |
| 131 | 202 static FILE *asi; |
| 148 | 203 |
| 153 | 204 static int max_func_args; |
| 205 static int max_func_iargs; | |
| 206 static int my_func_args; | |
| 130 | 207 #define ARG_LVAR_OFFSET 0x10000000 |
| 208 | |
| 131 | 209 #define DOT_SIZE 1 |
| 210 | |
| 130 | 211 /* |
| 212 | |
| 152 | 213 Reorder is automatically done in assembler. |
| 214 delayed slot done within .set noreorder. | |
| 215 | |
| 130 | 216 r0 return value etc. |
| 152 | 217 $2,$3 return value. (dpcmp return value on $2) |
| 218 $0 special register | |
| 219 $4-$7 input register | |
| 130 | 220 r22-r29 saved register variable (input register for code segement) |
| 152 | 221 $31 stack pointer |
| 222 $fp frame pointer | |
| 130 | 223 |
| 152 | 224 $f0 return value etc. |
| 225 $f14,$f12 input register | |
| 226 $f20-$f31 saved register variable | |
| 130 | 227 |
| 228 function call stack frame | |
| 229 <------r1_offset------------------------------> | |
| 230 <------------lvar_offset-------> | |
| 231 r+ +------------+---+---------------+----------+--------------+----+ - | |
| 232 callee arg xx register save local caller arg xx | |
| 233 reg_save disp max_func_args*size_of_int | |
| 234 lvar>0 lvar<0 lvar>0x1000 0000 | |
| 235 | |
| 236 code segment stack frame | |
| 237 | |
| 238 * gotoを呼び出した関数のr1 ! r1(goto前のr1) | |
| 239 # * r30 <---r1_offset---------> r1 | |
| 240 r+ +----------+--+----------+----------------+-----------+----------+----+ | |
| 241 cousin arg xx reg save !callee arg !code local caller arg xx | |
| 242 r20-r29 lvar>0 lvar<0 lvar>0x1000 000 | |
| 243 f20-f31 <-my_func_args--><--disp-----><-max_func_arg-> | |
| 244 *size_of_int *size_of_int | |
| 245 | |
| 246 */ | |
| 247 int arg_offset = 24; int arg_offset1 = 24; int disp_offset = -12; | |
| 248 #define func_disp_offset 60 | |
| 249 #define r1_offset func_disp_offset+12 | |
| 250 int code_disp_offset = 0; int jump_offset = 0; | |
| 251 #define CODE_LVAR l+code_disp_offset | |
| 252 #define CODE_CALLER_ARG (l-ARG_LVAR_OFFSET)+arg_offset1 | |
| 253 #define FUNC_LVAR l+disp_offset | |
| 254 #define CALLER_ARG (l-ARG_LVAR_OFFSET)+arg_offset1 | |
| 255 #define CALLEE_ARG l+arg_offset | |
| 256 | |
| 257 void | |
| 258 code_offset_set() | |
| 259 { | |
| 260 #if 0 | |
| 261 int l; | |
| 262 #endif | |
| 263 int lvar_offsetv = -disp+max_func_args*size_of_int+func_disp_offset; | |
| 264 int r1_offsetv = -disp+max_func_args*size_of_int-reg_save+r1_offset; | |
| 153 | 265 printf("L_%d = %d\n",lvar_offset_label,lvar_offsetv); |
| 266 printf("L_%d = %d\n",r1_offset_label,r1_offsetv); | |
| 130 | 267 #if 0 |
| 268 printf("# function %s\n",fnptr->nm); | |
| 269 l = ARG_LVAR_OFFSET; | |
| 270 printf("# offset call0\t%d\n",CALLER_ARG); | |
| 271 l = ARG_LVAR_OFFSET+max_func_args*size_of_int; | |
| 272 printf("# offset calln\t%d %d\n",CALLER_ARG,max_func_args*size_of_int); | |
| 273 l = disp; | |
| 274 printf("# offset lvarn\t%d %d\n",FUNC_LVAR+lvar_offsetv,disp); | |
| 275 l = 0; | |
| 276 printf("# offset lvar0\t%d\n",FUNC_LVAR+lvar_offsetv); | |
| 277 l = -reg_save; | |
| 278 printf("# offset regs\t%d\n",FUNC_LVAR+lvar_offsetv); | |
| 279 printf("# offset r1off\t%d\n",r1_offsetv); | |
| 280 l = 0; | |
| 281 printf("# offset carg0\t%d\n",CALLEE_ARG+r1_offsetv); | |
| 282 l = my_func_args; | |
| 283 printf("# offset cargn\t%d %d\n",CALLEE_ARG+r1_offsetv,my_func_args); | |
| 284 #endif | |
| 285 } | |
| 286 | |
| 287 static void | |
| 131 | 288 lvar(int l) |
| 130 | 289 { |
| 290 if (fnptr->sc==CODE) { | |
| 148 | 291 if (l>=ARG_LVAR_OFFSET) { /* caller's arguments */ |
| 292 printf("%d($fp)\n",CODE_CALLER_ARG); | |
| 293 } else | |
| 294 printf("%d($fp)\n",CODE_LVAR); | |
| 130 | 295 } else if (l<0) { /* local variable */ |
| 148 | 296 printf("%d+L_%d($fp)\n",FUNC_LVAR,lvar_offset_label); |
| 130 | 297 } else if (l>=ARG_LVAR_OFFSET) { /* caller's arguments */ |
| 148 | 298 printf("%d($fp)\n",CALLER_ARG); |
| 130 | 299 } else { /* callee's arguments */ |
| 148 | 300 printf("%d+L_%d($fp)\n",CALLEE_ARG,r1_offset_label); |
| 130 | 301 } |
| 302 } | |
| 303 | |
| 304 static void | |
| 131 | 305 lvar_address(int l,int creg) |
| 130 | 306 { |
| 307 if (fnptr->sc==CODE) { | |
| 148 | 308 if (l>=ARG_LVAR_OFFSET) { /* caller's arguments */ |
| 309 printf("\taddu\t%s,$fp,%d\n",register_name(creg),CODE_CALLER_ARG); | |
| 310 } else | |
| 311 printf("\taddu\t%s,$fp,%d\n",register_name(creg),CODE_LVAR); | |
| 130 | 312 } else if (l<0) { /* local variable */ |
| 148 | 313 printf("\taddu\t%s,$fp,%d+L_%d\n",register_name(creg),FUNC_LVAR,lvar_offset_label); |
| 130 | 314 } else if (l>=ARG_LVAR_OFFSET) { /* caller's arguments */ |
| 148 | 315 printf("\taddu\t%s,$fp,%d\n",register_name(creg),CALLER_ARG); |
| 130 | 316 } else { /* callee's arguments */ |
| 148 | 317 printf("\taddu\t%s,$fp,%d+L_%d\n",register_name(creg),CALLEE_ARG,r1_offset_label); |
| 130 | 318 } |
| 319 } | |
| 320 | |
| 321 void | |
| 322 code_lvar(int e2,int creg) { | |
| 131 | 323 lvar_address(e2,creg); |
| 130 | 324 regv[creg]=1; |
| 325 } | |
| 326 | |
| 327 void | |
| 328 code_init(void) | |
| 329 { | |
| 131 | 330 /* this is called once program call */ |
| 130 | 331 } |
| 332 | |
| 333 void | |
| 334 gexpr_code_init(void){ | |
| 335 regv[creg]=0; | |
| 148 | 336 regv[freg]=0; |
| 130 | 337 } |
| 338 | |
| 137 | 339 void |
| 148 | 340 code_gexpr(int e){ |
| 341 if (is_int_reg(creg) && creg!=ireg) error(-1); | |
| 342 } | |
| 343 | |
| 344 | |
| 345 void | |
| 137 | 346 code_arg_register(NMTBL *fnptr) |
| 347 { | |
| 348 int args = fnptr->dsp; | |
| 349 NMTBL *n; | |
| 350 int reg_var = 0; | |
| 351 int freg_var = 0; | |
| 352 int type; | |
| 353 int reg; | |
| 354 int is_code0 = is_code(fnptr); | |
| 130 | 355 |
| 137 | 356 while (args) { |
| 357 /* process in reverse order */ | |
| 358 n = (NMTBL*)caddr(args); | |
| 359 type = n->ty; | |
| 360 if (scalar(type)) { | |
| 361 if ((reg = get_input_register_var(reg_var,n,is_code0))) { | |
| 362 n->sc = REGISTER; | |
| 363 n->dsp = cadr(reg); | |
| 364 regv[n->dsp]= 1; | |
| 365 regs[n->dsp]= INPUT_REG; | |
| 366 reg_var++; | |
| 367 cadddr(args)=size_of_int; /* why we need this? */ | |
| 368 } | |
| 369 } else if (type==FLOAT) { | |
| 138 | 370 if ((reg = get_input_dregister_var(freg_var,n,is_code0,0))) { |
| 141 | 371 n->sc = FREGISTER; |
| 137 | 372 n->dsp = cadr(reg); |
| 148 | 373 regv[n->dsp]= 1; |
| 374 regs[n->dsp]= INPUT_REG; | |
| 375 freg_var++; | |
| 137 | 376 cadddr(args)=size(type); /* why we need this? */ |
| 377 } | |
| 378 } else if (type==DOUBLE) { | |
| 141 | 379 if ((reg = get_input_dregister_var(reg_var,n,is_code0,1))) { |
| 137 | 380 n->sc = DREGISTER; |
| 381 n->dsp = cadr(reg); | |
| 148 | 382 regv[n->dsp]= 1; |
| 383 regs[n->dsp]= INPUT_REG; | |
| 141 | 384 reg_var+=2; |
| 137 | 385 cadddr(args)=size(type); /* why we need this? */ |
| 386 } | |
| 387 } | |
| 388 args = cadr(args); | |
| 389 } | |
| 130 | 390 if (is_function(fnptr)) |
| 148 | 391 code_save_input_registers(); |
| 130 | 392 } |
| 393 | |
| 394 int | |
| 395 get_register(void) | |
| 396 { /* 使われていないレジスタを調べる */ | |
| 397 int i,reg; | |
| 398 for(i=MAX_TMP_REG;i>MIN_TMP_REG;i--) { | |
| 399 if (regs[i]) continue; /* 使われている */ | |
| 400 regs[i]=USING_REG; /* そのレジスタを使うことを宣言し */ | |
| 401 return i; /* その場所を表す番号を返す */ | |
| 402 } | |
| 403 /* search register stack */ | |
| 404 for(i=0;i<reg_sp;i++) { | |
| 405 if ((reg=reg_stack[i])>=0) { | |
| 406 code_assign_lvar( | |
| 407 (reg_stack[i]=new_lvar(size_of_int)),reg,0); | |
| 408 reg_stack[i]= reg_stack[i]-REG_LVAR_OFFSET; | |
| 409 return reg; | |
| 410 } | |
| 411 } | |
| 195 | 412 #if FLOAT_CODE |
| 148 | 413 /* search dregister stack */ |
| 414 for(i=0;i<dreg_sp;i++) { | |
| 415 if ((reg=dreg_stack[i])>=0) { | |
| 416 code_dassign_lvar( | |
| 417 (dreg_stack[i]=new_lvar(size_of_double)),reg,1); | |
| 418 dreg_stack[i]= dreg_stack[i]-REG_LVAR_OFFSET; | |
| 149 | 419 free_register(reg); |
| 148 | 420 return get_register(); /* 今度は必ずある */ |
| 421 } | |
| 422 } | |
| 195 | 423 #endif |
| 131 | 424 for(i=0;i<REG_VAR_BASE-REG_VAR_MIN;i++) { |
| 425 reg =REG_VAR_BASE-i; | |
| 426 if (! regs[reg]) { /* 使われていないなら */ | |
| 427 regs[reg]=USING_REG; /* そのレジスタを使うことを宣言し */ | |
| 428 regv[reg]=0; | |
| 429 if (i>max_reg_var) max_reg_var=i; | |
| 430 return reg; | |
| 431 } | |
| 432 } | |
| 130 | 433 /* 空いている場所がないなら、エラー (いったい誰が使ってるの?) */ |
| 148 | 434 error(HPERR); return creg; |
| 130 | 435 } |
| 436 | |
| 437 int | |
| 438 pop_register(void) | |
| 439 { /* レジスタから値を取り出す */ | |
| 440 return reg_stack[--reg_sp]; | |
| 441 } | |
| 442 | |
| 195 | 443 #if FLOAT_CODE |
| 444 | |
| 148 | 445 static int |
| 446 get_dregister1() { | |
| 149 | 447 int i; |
| 151 | 448 for(i=MAX_TMP_DREG+DREG_OFFSET;i>MIN_TMP_DREG+DREG_OFFSET;i--) { |
| 148 | 449 if (regs[i]) continue; /* 使われている */ |
| 450 if (regs[dreg_pair0[i-DREG_OFFSET]]) continue; | |
| 451 if (regs[dreg_pair1[i-DREG_OFFSET]]) continue; | |
| 452 regs[dreg_pair0[i-DREG_OFFSET]]=USING_REG; | |
| 453 regs[dreg_pair1[i-DREG_OFFSET]]=USING_REG; | |
| 454 regs[i]=USING_REG; /* そのレジスタを使うことを宣言し */ | |
| 455 return i; /* その場所を表す番号を返す */ | |
| 456 } | |
| 457 return -1; | |
| 458 } | |
| 459 | |
| 460 static int | |
| 461 get_dregister0() | |
| 462 { | |
| 149 | 463 int reg,i; |
| 148 | 464 /* とりあえず、空き int register pair を探す */ |
| 465 if ((i=get_dregister1())!=-1) { | |
| 466 return i; | |
| 467 } | |
| 468 /* search dregister stack */ | |
| 469 for(i=0;i<dreg_sp;i++) { | |
| 470 if ((reg=dreg_stack[i])>=0) { | |
| 471 code_dassign_lvar( | |
| 472 (dreg_stack[i]=new_lvar(size_of_double)),reg,1); | |
| 473 dreg_stack[i]= dreg_stack[i]-REG_LVAR_OFFSET; | |
| 152 | 474 return reg; |
| 148 | 475 } |
| 476 } | |
| 477 /* clear integer register stack */ | |
| 478 for(i=0;i<reg_sp;i++) { | |
| 479 if ((reg=reg_stack[i])>=0) { | |
| 480 code_assign_lvar( | |
| 481 (reg_stack[i]=new_lvar(size_of_int)),reg,0); | |
| 482 reg_stack[i]= reg_stack[i]-REG_LVAR_OFFSET; | |
| 483 free_register(reg); | |
| 484 } | |
| 485 } | |
| 486 if ((i=get_dregister1())!=-1) { | |
| 487 return i; | |
| 488 } | |
| 489 | |
| 490 error(REG_ERR); return dreg; | |
| 491 } | |
| 492 | |
| 493 static int | |
| 494 get_fregister0() | |
| 130 | 495 { /* 使われていないレジスタを調べる */ |
| 148 | 496 int i,reg; |
| 497 for(i=MAX_TMP_FREG+FREG_OFFSET;i>MIN_TMP_FREG+FREG_OFFSET;i--) { | |
| 498 if (regs[i]) continue; /* 使われている */ | |
| 499 regs[i]=USING_REG; /* そのレジスタを使うことを宣言し */ | |
| 130 | 500 return i; /* その場所を表す番号を返す */ |
| 501 } | |
| 502 /* search register stack */ | |
| 503 for(i=0;i<freg_sp;i++) { | |
| 504 if ((reg=freg_stack[i])>=0) { | |
| 505 code_dassign_lvar( | |
| 153 | 506 (freg_stack[i]=new_lvar(size_of_float)),reg,0); |
| 130 | 507 freg_stack[i]= freg_stack[i]-REG_LVAR_OFFSET; |
| 508 return reg; | |
| 509 } | |
| 510 } | |
| 131 | 511 for(i=0;i<FREG_VAR_BASE-REG_VAR_MIN;i++) { |
| 148 | 512 reg =FREG_VAR_BASE-i+FREG_OFFSET; |
| 513 if (! regs[reg]) { /* 使われていないなら */ | |
| 514 regs[reg]=USING_REG; /* そのレジスタを使うことを宣言し */ | |
| 515 regv[reg]=0; | |
| 131 | 516 if (i>max_freg_var) max_freg_var=i; |
| 517 return reg; | |
| 518 } | |
| 519 } | |
| 130 | 520 /* 空いている場所がないなら、エラー (いったい誰が使ってるの?) */ |
| 521 error(REG_ERR); return freg; | |
| 522 } | |
| 523 | |
| 148 | 524 int |
| 525 get_dregister(int d) | |
| 149 | 526 { |
| 148 | 527 if (d) { |
| 528 return get_dregister0(); | |
| 529 } else { | |
| 530 return get_fregister0(); | |
| 531 } | |
| 532 } | |
| 533 | |
| 130 | 534 int |
| 535 pop_fregister(void) | |
| 536 { /* レジスタから値を取り出す */ | |
| 537 return freg_stack[--freg_sp]; | |
| 538 } | |
| 539 | |
| 148 | 540 int |
| 541 pop_dregister(void) | |
| 542 { /* レジスタから値を取り出す */ | |
| 543 return dreg_stack[--dreg_sp]; | |
| 544 } | |
| 195 | 545 #endif |
| 546 | |
| 547 #if LONGLONG_CODE | |
| 548 int | |
| 549 get_lregister_var(NMTBL *n) | |
| 550 { | |
| 551 return -1; | |
| 552 } | |
| 553 #endif | |
| 554 | |
| 148 | 555 |
| 130 | 556 void |
| 557 emit_pop_free(int xreg) | |
| 558 { | |
| 559 if (xreg>=0) | |
| 560 free_register(xreg); | |
| 561 } | |
| 562 | |
| 563 void | |
| 564 free_register(int i) { /* いらなくなったレジスタを開放 */ | |
| 148 | 565 int i0,i1; |
| 566 if (i<0||MAX_FREGISTER+FREG_OFFSET+REAL_MAX_DREGISTER<i) error(-1); | |
| 567 if (is_double_reg(i)) { | |
| 568 i0 = dreg_pair0[i-DREG_OFFSET]; | |
| 569 regv[i0]=regs[i0]=0; | |
| 570 i1 = dreg_pair1[i-DREG_OFFSET]; | |
| 571 regv[i1]=regs[i1]=0; | |
| 572 } | |
| 130 | 573 regv[i]=regs[i]=0; |
| 574 } | |
| 575 | |
| 576 int | |
| 138 | 577 get_input_dregister_var(int i,NMTBL *n,int is_code,int d) |
| 130 | 578 { |
| 148 | 579 if (d) { |
| 580 if (is_code) { | |
| 581 if(!(i<DREG_VAR_BASE-DREG_VAR_MIN)) return 0; | |
| 582 i = DREG_VAR_BASE-i+DREG_OFFSET; | |
| 141 | 583 } else { |
| 148 | 584 if (i<0||i>=MAX_INPUT_DREGISTER_VAR) return 0; |
| 585 i = i+MIN_TMP_DREG+DREG_OFFSET; | |
| 141 | 586 } |
| 148 | 587 return list3(DREGISTER,i,(int)n); |
| 141 | 588 } else { |
| 148 | 589 if (is_code) { |
| 590 if(!(i<FREG_VAR_BASE-FREG_VAR_MIN)) return 0; | |
| 591 i = FREG_VAR_BASE-i+FREG_OFFSET; | |
| 141 | 592 } else { |
| 148 | 593 if (i<0||i>=MAX_INPUT_FREGISTER_VAR) return 0; |
| 594 i = i+MIN_TMP_FREG+FREG_OFFSET; | |
| 141 | 595 } |
| 148 | 596 return list3(FREGISTER,i,(int)n); |
| 141 | 597 } |
| 130 | 598 } |
| 599 | |
| 600 int | |
| 601 get_input_register_var(int i,NMTBL *n,int is_code) | |
| 602 { | |
| 603 if (is_code) { | |
| 131 | 604 if(!(i<REG_VAR_BASE-REG_VAR_MIN)) return 0; |
| 130 | 605 i = REG_VAR_BASE-i; |
| 606 } else { | |
| 148 | 607 if (i<0||i>=MAX_INPUT_REGISTER_VAR) return 0; |
| 608 i = i+MIN_TMP_REG; | |
| 609 } | |
| 610 return list3(REGISTER,i,(int)n); | |
| 611 } | |
| 612 | |
| 613 /* double register case? */ | |
| 614 | |
| 615 int | |
| 616 get_input_register_var_1(int i,NMTBL *n,int is_code) | |
| 617 { | |
| 618 if (is_code) { | |
| 619 if(!(i<REG_VAR_BASE-REG_VAR_MIN)) return 0; | |
| 620 i = REG_VAR_BASE-i; | |
| 621 } else { | |
| 622 if (i<0||i>=MAX_INPUT_REGISTER_VAR+1) return 0; | |
| 130 | 623 i = i+MIN_TMP_REG; |
| 624 } | |
| 625 return list3(REGISTER,i,(int)n); | |
| 626 } | |
| 627 | |
| 628 int | |
| 137 | 629 free_register_count(int d) |
| 130 | 630 { |
| 631 int i,count,fcount; | |
| 632 fcount = count = 0; | |
| 633 for(i=0;i<MAX_REGISTER;i++) { | |
| 634 if (! regs[i] && ! regv[i]) count++; | |
| 635 } | |
| 636 for(i=0;i<MAX_FREGISTER;i++) { | |
| 148 | 637 if (! regs[i+FREG_OFFSET] && ! regv[i+FREG_OFFSET]) fcount++; |
| 130 | 638 } |
| 148 | 639 printf("# free reg %d freg %d\n",count,fcount); |
| 137 | 640 return d?fcount:count; |
| 130 | 641 } |
| 642 | |
| 643 int | |
| 644 register_full(void) | |
| 645 { | |
| 646 int i; | |
| 647 for(i=0;i<MAX_REGISTER;i++) { | |
| 648 if (! regs[i]) { | |
| 649 return 0; | |
| 650 } | |
| 651 } | |
| 652 return 1; | |
| 653 } | |
| 654 | |
| 655 void | |
| 656 free_all_register(void) | |
| 657 { | |
| 658 int i; | |
| 659 for(i=0;i<MAX_REGISTER;i++) { regs[i]=0; regv[i]=0; } | |
| 148 | 660 for(i=0;i<MAX_FREGISTER;i++) { regs[i+FREG_OFFSET]=0; regv[i+FREG_OFFSET]=0; } |
| 661 for(i=0;i<MAX_DREGISTER;i++) { regs[i+DREG_OFFSET]=0; regv[i+DREG_OFFSET]=0; } | |
| 130 | 662 creg = get_register(); |
| 195 | 663 #if FLOAT_CODE |
| 138 | 664 freg = get_dregister(0); |
| 150 | 665 dreg = DREG_DREGISTER; |
| 195 | 666 #endif |
| 130 | 667 set_creg(CREG_REGISTER,0); |
| 668 set_freg(FREG_FREGISTER,0); | |
| 148 | 669 set_dreg(DREG_DREGISTER,0); |
| 130 | 670 return; |
| 671 } | |
| 672 | |
| 673 void | |
| 674 register_usage(char *s) | |
| 675 { | |
| 676 #if 0 | |
| 677 int i; | |
| 678 #endif | |
| 679 if (chk) return; | |
| 680 if (!lsrc) return; | |
| 681 printf("# %d: %s:",lineno,s); | |
| 150 | 682 printf(" creg=%s ireg=%s freg=%s dreg=%s", |
| 683 is_int_reg(creg)?register_name(creg): | |
| 684 is_float_reg(creg)?fregister_name(creg): | |
| 685 is_double_reg(creg)?dregister_name0(creg):"bad", | |
| 686 register_name(ireg),fregister_name(freg),dregister_name0(dreg)); | |
| 130 | 687 #if 0 |
| 688 printf("\n# regs:"); | |
| 689 for(i=0;i<MAX_REGISTER;i++) { printf("%d",regv[i]); } | |
| 690 printf(":"); | |
| 691 for(i=0;i<MAX_REGISTER;i++) { printf("%d",regs[i]); } | |
| 692 printf("\n# freg:"); | |
| 148 | 693 for(i=0;i<MAX_FREGISTER;i++) { printf("%d",regs[i+FREG_OFFSET]); } |
| 130 | 694 for(i=reg_sp;i>=0;i--) { |
| 695 if(reg_stack[i]>=0) | |
| 148 | 696 printf(" %s",register_name(reg_stack[i])); |
| 130 | 697 } |
| 698 #endif | |
| 699 printf("\n"); | |
| 700 } | |
| 701 | |
| 702 void | |
| 703 gexpr_init(void) | |
| 704 { | |
| 705 while(reg_sp > 0) { | |
| 706 free_register(reg_stack[--reg_sp]); | |
| 707 } | |
| 148 | 708 while(freg_sp > 0) { |
| 709 free_register(freg_stack[--freg_sp]); | |
| 710 } | |
| 711 while(dreg_sp > 0) { | |
| 712 free_register(dreg_stack[--dreg_sp]); | |
| 713 } | |
| 130 | 714 if (cond_freg!=-1) { |
| 148 | 715 if(car(cond_freg)==FREGISTER) free_register(cadr(cond_freg)); |
| 130 | 716 cond_freg=-1; |
| 717 } | |
| 148 | 718 if (cond_dreg!=-1) { |
| 719 if(car(cond_dreg)==DREGISTER) free_register(cadr(cond_dreg)); | |
| 720 cond_dreg=-1; | |
| 721 } | |
| 130 | 722 if (cond_reg!=-1) { |
| 723 if(car(cond_reg)==REGISTER) free_register(cadr(cond_reg)); | |
| 724 cond_reg=-1; | |
| 725 } | |
| 148 | 726 cmpreg = -1; |
| 130 | 727 text_mode(); |
| 728 gexpr_code_init(); | |
| 729 register_usage("gexpr_init"); | |
| 730 } | |
| 731 | |
| 732 | |
| 733 void | |
| 734 emit_init(void) | |
| 735 { | |
| 736 free_all_register(); | |
| 737 max_reg_var=-1; max_freg_var=-1; | |
| 738 reg_sp = 0; | |
| 739 freg_sp = 0; | |
| 148 | 740 dreg_sp = 0; |
| 130 | 741 text_mode(); |
| 742 } | |
| 743 | |
| 744 int | |
| 745 register_var(int r) { | |
| 746 return r; | |
| 747 } | |
| 748 | |
| 749 | |
| 750 int | |
| 751 get_register_var(NMTBL *n) | |
| 752 { | |
| 753 int i; | |
| 754 for(i=0;i<REG_VAR_BASE-REG_VAR_MIN;i++) { | |
| 148 | 755 if (! regs[REG_VAR_BASE-i]) { /* 使われていないなら */ |
| 756 /* そのレジスタを使うことを宣言し */ | |
| 757 regs[REG_VAR_BASE-i]=USING_REG; | |
| 758 regv[REG_VAR_BASE-i]=0; | |
| 130 | 759 if (i>max_reg_var) max_reg_var=i; |
| 760 /* その場所を表す番号を返す */ | |
| 761 return list3(REGISTER,REG_VAR_BASE-i,(int)n); | |
| 148 | 762 } |
| 130 | 763 } |
| 764 return list2(LVAR,new_lvar(size_of_int)); | |
| 765 } | |
| 766 | |
| 767 int | |
| 768 fregister_var(int r) { | |
| 769 return r; | |
| 770 } | |
| 771 | |
| 772 int | |
| 138 | 773 get_dregister_var(NMTBL *n,int d) |
| 130 | 774 { |
| 148 | 775 int i,j; |
| 776 if (d) { | |
| 777 for(i=0;i<DREG_VAR_BASE-DREG_VAR_MIN;i++) { | |
| 149 | 778 if (! regs[j=(DREG_VAR_BASE-i+DREG_OFFSET)]) { /* 使われていないなら */ |
| 148 | 779 if (regs[dreg_pair0[j]] || regs[dreg_pair1[j]]) continue; |
| 780 regs[DREG_VAR_BASE-i+DREG_OFFSET]=USING_REG; /*そのレジスタを使うことを宣言し*/ | |
| 781 regv[DREG_VAR_BASE-i+DREG_OFFSET]=0; | |
| 782 regs[dreg_pair0[j]] = regs[dreg_pair1[j]] = USING_REG; | |
| 783 regv[dreg_pair0[j]] = regv[dreg_pair1[j]] = 0; | |
| 149 | 784 if (dreg_pair1[j]>max_reg_var) max_reg_var=dreg_pair1[j]; |
| 148 | 785 /* その場所を表す番号を返す */ |
| 786 return list3(DREGISTER,DREG_VAR_BASE-i+DREG_OFFSET,(int)n); | |
| 787 } | |
| 788 } | |
| 789 return list2(LVAR,new_lvar(size_of_double)); | |
| 790 } else { | |
| 791 for(i=0;i<FREG_VAR_BASE-FREG_VAR_MIN;i++) { | |
| 792 if (! regs[FREG_VAR_BASE-i+FREG_OFFSET]) { /* 使われていないなら */ | |
| 793 regs[FREG_VAR_BASE-i+FREG_OFFSET]=USING_REG; /*そのレジスタを使うことを宣言し*/ | |
| 794 regv[FREG_VAR_BASE-i+FREG_OFFSET]=0; | |
| 795 if (i>max_freg_var) max_freg_var=i; | |
| 796 /* その場所を表す番号を返す */ | |
| 797 return list3(FREGISTER,FREG_VAR_BASE-i+FREG_OFFSET,(int)n); | |
| 798 } | |
| 799 } | |
| 800 return list2(LVAR,new_lvar(size_of_float)); | |
| 130 | 801 } |
| 802 } | |
| 803 | |
| 804 void | |
| 805 emit_push() | |
| 806 { | |
| 807 int new_reg; | |
| 808 if (reg_sp>MAX_MAX) error(-1); | |
| 809 new_reg = get_register(); | |
| 810 reg_stack[reg_sp++] = creg; /* push するかわりにレジスタを使う */ | |
| 148 | 811 ireg = creg = new_reg; |
| 130 | 812 regv[creg]=1; |
| 813 } | |
| 814 | |
| 815 int | |
| 816 emit_pop(int type) | |
| 817 { | |
| 818 int xreg,reg; | |
| 819 xreg=pop_register(); | |
| 820 if (xreg<= -REG_LVAR_OFFSET) { | |
| 821 reg = get_register(); | |
| 822 code_rlvar(REG_LVAR_OFFSET+xreg,reg); | |
| 823 free_lvar(REG_LVAR_OFFSET+xreg); | |
| 824 xreg = reg; | |
| 148 | 825 regv[creg]=1; |
| 130 | 826 } |
| 827 return xreg; | |
| 828 } | |
| 829 | |
| 830 void | |
| 831 code_label(int labelno) | |
| 832 { | |
| 833 printf("L_%d:\n",labelno); | |
| 834 } | |
| 835 | |
| 836 void | |
| 837 code_gvar(int e1,int creg) { | |
|
136
069960078249
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133
diff
changeset
|
838 printf("\tla %s,%s\n",register_name(creg),((NMTBL*)cadr(e1))->nm); |
| 130 | 839 regv[creg]=1; |
| 840 } | |
| 841 | |
| 842 void | |
| 843 code_rgvar(int e1,int creg) { | |
|
136
069960078249
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kono
parents:
133
diff
changeset
|
844 printf("\tlw %s,%s\n",register_name(creg),((NMTBL*)cadr(e1))->nm); |
| 130 | 845 regv[creg]=1; |
| 846 } | |
| 167 | 847 char *cload(int sign,int sz) { return sz==1?(sign?"lbu":"lb"):(sz==size_of_short?(sign?"lhu":"lh"):"lw");} |
| 168 | 848 char *cstore(int sz) { return sz==1?"sb":(sz==size_of_short)?"sh":"sw";} |
| 130 | 849 void |
| 167 | 850 code_crgvar(int e1,int creg,int sign,int sz){ |
| 851 printf("\t%s %s,%s\n",cload(sign,sz),register_name(creg),((NMTBL*)cadr(e1))->nm); | |
| 130 | 852 regv[creg]=1; |
| 853 } | |
| 854 | |
| 855 | |
| 856 void | |
| 857 code_register(int e2,int creg) { | |
| 858 if (creg!=e2) | |
| 148 | 859 printf("\tmove %s,%s\n",register_name(creg),register_name(e2)); |
| 130 | 860 regv[creg]=1; |
| 861 } | |
| 862 | |
| 863 | |
| 864 void | |
| 865 code_rlvar(int e2,int reg) { | |
| 131 | 866 printf("\tlw %s,",register_name(reg)); |
| 130 | 867 lvar(e2); |
| 868 regv[creg]=1; | |
| 869 } | |
| 870 | |
| 871 | |
| 872 void | |
| 167 | 873 code_crlvar(int e2,int reg,int sign,int sz) { |
| 874 printf("\t%s %s,",cload(sign,sz),register_name(reg)); | |
| 130 | 875 lvar(e2); |
| 876 regv[reg]=1; | |
| 877 } | |
| 878 | |
| 879 | |
| 880 void | |
| 881 code_fname(NMTBL *n,int creg) { | |
|
136
069960078249
remove redundant funcall argument for prototyped code in PowerPC case.
kono
parents:
133
diff
changeset
|
882 printf("\tla %s,%s\n",register_name(creg),n->nm); |
| 130 | 883 regv[creg]=1; |
| 884 } | |
| 885 | |
| 886 | |
| 887 void | |
| 888 code_const(int e2,int creg) { | |
| 131 | 889 printf("\tli %s,%d\n",register_name(creg),e2); |
| 130 | 890 regv[creg]=1; |
| 891 } | |
| 892 | |
| 893 | |
| 894 void | |
| 895 code_neg(int creg) { | |
| 131 | 896 printf("\tsubu %s,$0,%s\n", register_name(creg), register_name(creg)); |
| 130 | 897 } |
| 898 | |
| 899 | |
| 900 void | |
| 901 code_not(int creg) { | |
| 902 printf("\tnor %s,%s,%s\n", | |
| 148 | 903 register_name(creg), register_name(creg),register_name(creg)); |
| 130 | 904 } |
| 905 | |
| 906 | |
| 907 void | |
| 908 code_lnot(int creg) { | |
| 131 | 909 /* if non zero 1 else 0 */ |
| 910 int dreg = get_register(); | |
| 911 printf("\txori %s,%s,0x0\n", | |
| 148 | 912 register_name(dreg),register_name(creg)); |
| 131 | 913 printf("\tsltu %s,%s,1\n", |
| 148 | 914 register_name(creg),register_name(dreg)); |
| 131 | 915 free_register(dreg); |
| 130 | 916 } |
| 917 | |
| 918 void | |
| 168 | 919 code_preinc(int e1,int e2,int dir,int sign,int sz,int reg) { |
| 130 | 920 char *xrn,*drn; |
| 921 int i,dreg; | |
| 922 if (car(e2)==REGISTER) { | |
| 148 | 923 printf("\taddu %s,%s,%d\n", |
| 168 | 924 register_name(cadr(e2)),register_name(cadr(e2)), dir); |
| 148 | 925 if (cadr(reg)!=e2) |
| 926 printf("\tmove %s,%s\n",register_name(cadr(reg)),register_name(e2)); | |
| 927 regv[reg]=1; | |
| 928 return; | |
| 130 | 929 } |
| 930 g_expr(e2); | |
| 931 xrn = register_name(creg); | |
| 932 dreg=get_register(); if (!dreg) error(-1); | |
| 933 drn = register_name(dreg); | |
| 168 | 934 printf("\t%s %s,0(%s)\n",cload(sign,sz),drn,xrn); |
| 935 printf("\taddu %s,%s,%d\n",drn,drn,dir); | |
| 936 printf("\t%s %s,0(%s)\n",cstore(sz),drn,xrn); | |
| 130 | 937 i=creg;creg=dreg;dreg=i; |
| 150 | 938 regv[creg]=1; ireg=creg; |
| 130 | 939 free_register(dreg); |
| 940 } | |
| 941 | |
| 942 | |
| 943 void | |
| 168 | 944 code_postinc(int e1,int e2,int dir,int sign,int sz,int reg) { |
| 130 | 945 char *xrn,*crn,*nrn; |
| 946 int dreg,nreg,i; | |
| 947 if (car(e2)==REGISTER) { | |
| 148 | 948 printf("\tmove %s,%s\n",register_name(reg),register_name(cadr(e2))); |
| 949 printf("\taddu %s,%s,%d\n", | |
| 168 | 950 register_name(cadr(e2)),register_name(cadr(e2)),dir); |
| 148 | 951 regv[reg]=1; |
| 952 return; | |
| 130 | 953 } |
| 954 g_expr(e2); | |
| 955 crn = register_name(creg); | |
| 956 dreg=get_register(); if (!dreg) error(-1); | |
| 957 xrn = register_name(dreg); | |
| 958 nreg=get_register(); if (!nreg) error(-1); | |
| 959 nrn = register_name(nreg); | |
| 168 | 960 printf("\t%s %s,0(%s)\n",cload(sign,sz),xrn,crn); |
| 961 printf("\taddu %s,%s,%d\n",nrn,xrn,dir); | |
| 962 printf("\t%s %s,0(%s)\n",cstore(sz),nrn,crn); | |
| 963 i=creg;creg=dreg;dreg=i; | |
| 130 | 964 free_register(nreg); |
| 965 free_register(dreg); | |
| 150 | 966 regv[creg]=1; ireg=creg; |
| 130 | 967 } |
| 968 | |
| 969 | |
| 970 | |
| 971 void | |
| 972 code_return(int creg) { | |
| 973 char *crn = register_name(creg); | |
| 131 | 974 printf("\tla %s,L_%d\n",crn,retcont); |
| 130 | 975 } |
| 976 | |
| 977 #define R1SAVE 1 | |
| 978 | |
| 979 void | |
| 980 code_environment(int creg) { | |
| 981 /* save frame pointer */ | |
| 982 #if R1SAVE | |
| 131 | 983 printf("\tlw %s,0($fp)\n",register_name(creg)); |
| 130 | 984 #else |
| 985 int l = 0; | |
| 131 | 986 printf("\taddu %s,",register_name(creg)); |
| 987 printf("$fp,%d+L_%d\n",FUNC_LVAR,lvar_offset_label); | |
| 130 | 988 #endif |
| 989 } | |
| 990 | |
| 991 void | |
| 992 code_bool(int e1) { | |
| 993 char *xrn; | |
| 994 int e2,e3; | |
| 995 b_expr(e1,1,e2=fwdlabel(),1); /* including > < ... */ | |
| 150 | 996 creg = use_int(creg); |
| 130 | 997 xrn = register_name(creg); |
| 998 printf("\tli %s,0\n",xrn); | |
| 999 jmp(e3=fwdlabel()); | |
| 1000 fwddef(e2); | |
| 1001 printf("\tli %s,1\n",xrn); | |
| 1002 fwddef(e3); | |
| 1003 } | |
| 1004 | |
| 1005 char * | |
| 1006 code_gt(int cond) { | |
| 152 | 1007 return (cond?"\tslt %s,%s,%s\n\tbeq %s,$0,L_%d\n": |
| 1008 "\tslt %s,%s,%s\n\tbne %s,$0,L_%d\n"); | |
| 130 | 1009 } |
| 1010 | |
| 1011 char * | |
| 1012 code_ugt(int cond) { | |
| 152 | 1013 return (cond?"\tsltu %s,%s,%s\n\tbeq %s,$0,L_%d\n": |
| 1014 "\tsltu %s,%s,%s\n\tbne %s,$0,L_%d\n"); | |
| 130 | 1015 } |
| 1016 | |
| 1017 char * | |
| 1018 code_ge(int cond) { | |
| 152 | 1019 return (cond?"\tslt %s,%s,%s\n\txori %s,%s,0x1\n\tbeq %s,$0,L_%d\n": |
| 1020 "\tslt %s,%s,%s\n\txori %s,%s,0x1\n\tbne %s,$0,L_%d\n"); | |
| 130 | 1021 } |
| 1022 | |
| 1023 char * | |
| 1024 code_uge(int cond) { | |
| 152 | 1025 return (cond?"\tsltu %s,%s,%s\n\txori %s,%s,0x1\n\tbeq %s,$0,L_%d\n": |
| 1026 "\tsltu %s,%s,%s\n\txori %s,%s,0x1\n\tbne %s,$0,L_%d\n"); | |
| 130 | 1027 } |
| 1028 | |
| 1029 char * | |
| 1030 code_eq(int cond) { | |
| 152 | 1031 return (cond?"\tbeq %s,%s,L_%d\n":"\tbne %s,%s,L_%d\n"); |
| 130 | 1032 } |
| 1033 | |
| 1034 void | |
| 167 | 1035 code_cmp_crgvar(int e1,int sz) { |
| 148 | 1036 if (cmpreg==-1) cmpreg = get_register(); |
| 167 | 1037 code_crgvar(cadr(e1),cmpreg,1,sz); |
| 148 | 1038 regv[cmpreg]=1; |
| 130 | 1039 } |
| 1040 | |
| 1041 | |
| 1042 void | |
| 167 | 1043 code_cmp_crlvar(int e2,int sz) { |
| 148 | 1044 if (cmpreg==-1) cmpreg = get_register(); |
| 167 | 1045 code_crlvar(e2,cmpreg,1,sz); |
| 148 | 1046 regv[cmpreg]=1; |
| 130 | 1047 } |
| 1048 | |
| 1049 | |
| 1050 void | |
| 1051 code_cmp_rgvar(int e1) { | |
| 148 | 1052 if (cmpreg==-1) cmpreg = get_register(); |
| 1053 code_rgvar(e1,cmpreg); | |
| 1054 regv[cmpreg]=1; | |
| 130 | 1055 } |
| 1056 | |
| 1057 | |
| 1058 void | |
| 1059 code_cmp_rlvar(int e2) { | |
| 148 | 1060 if (cmpreg==-1) cmpreg = get_register(); |
| 149 | 1061 code_rlvar(e2,cmpreg); |
| 148 | 1062 regv[cmpreg]=1; |
| 130 | 1063 } |
| 1064 | |
| 1065 | |
| 1066 void | |
| 1067 code_cmp_register(int e2) { | |
| 148 | 1068 cmpreg = e2; |
| 1069 /* prevent cmpreg freeing */ | |
| 1070 regv[cmpreg]=2; | |
| 130 | 1071 } |
| 1072 | |
| 1073 | |
| 1074 void | |
| 1075 ascii(char *s) | |
| 1076 { | |
| 1077 printf("\t.ascii \""); | |
| 1078 while(*s) { | |
| 1079 if (*s=='\n') | |
| 1080 printf("%cn",92); | |
| 1081 else if (*s<' ') | |
| 1082 printf("%c%03o",92,*s); | |
| 1083 else if (*s=='\\') | |
| 1084 printf("\\\\"); | |
| 1085 else if (*s==34) | |
| 1086 printf("%c%c",92,34); | |
| 1087 else | |
| 1088 printf("%c",*s); | |
| 1089 s++; | |
| 1090 } | |
| 148 | 1091 printf("\\0%c\n\t.align 2\n",34); |
| 130 | 1092 } |
| 1093 | |
| 1094 void | |
| 1095 code_string(int e1,int creg) | |
| 1096 { | |
| 1097 char *s,*crn; | |
| 1098 int lb; | |
| 1099 crn=register_name(creg); | |
| 1100 | |
| 1101 s=(char *)cadr(e1); | |
| 131 | 1102 printf("\t.rdata\n\t.align 2\n"); |
| 130 | 1103 lb=fwdlabel(); |
| 1104 printf("L_%d:\n",lb); | |
| 1105 ascii(s); | |
| 1106 if (output_mode==TEXT_EMIT_MODE) { | |
| 148 | 1107 printf(".text\n"); |
| 130 | 1108 } else { |
| 148 | 1109 text_mode(); |
| 130 | 1110 } |
| 131 | 1111 printf("\tla %s,L_%d\n",crn,lb); |
| 130 | 1112 } |
| 1113 | |
| 1114 #define MAX_COPY_LEN 20 | |
| 1115 | |
| 1116 void | |
| 1117 emit_copy(int from,int to,int length,int offset,int value,int det) | |
| 1118 { | |
| 1119 char *frn = register_name(from); | |
| 1120 char *trn = register_name(to); | |
| 1121 char *drn; | |
| 1122 int fix = 0; | |
| 1123 char *memmove = "memmove"; | |
| 1124 int dreg = get_register(); if (!dreg) error(-1); | |
| 1125 drn = register_name(dreg); | |
| 1126 | |
| 1127 /* length <0 means upward direction copy */ | |
| 1128 switch (length) { | |
| 148 | 1129 case 0: break; |
| 130 | 1130 case 1: case -1: |
| 148 | 1131 printf("\tlb %s,%d(%s)\n",drn,offset,frn); |
| 1132 printf("\tsb %s,%d(%s)\n",drn,offset,trn); | |
| 1133 break; | |
| 130 | 1134 case 2: case -2: |
| 148 | 1135 printf("\tlh %s,%d(%s)\n",drn,offset,frn); |
| 1136 printf("\tsh %s,%d(%s)\n",drn,offset,trn); | |
| 1137 break; | |
| 130 | 1138 case 4: case -4: |
| 148 | 1139 printf("\tlw %s,%d(%s)\n",drn,offset,frn); |
| 1140 printf("\tsw %s,%d(%s)\n",drn,offset,trn); | |
| 1141 break; | |
| 130 | 1142 default: |
| 148 | 1143 if (-MAX_COPY_LEN<length && length <0) { |
| 1144 for(;length<=4;length+=4,offset-=4) | |
| 1145 emit_copy(from,to,4,offset,0,det); | |
| 1146 for(;length<=2;length+=2,offset-=2) | |
| 1147 emit_copy(from,to,2,offset,0,det); | |
| 1148 if(length>0) | |
| 1149 emit_copy(from,to,length,offset,0,det); | |
| 1150 break; | |
| 1151 } else if (length <=MAX_COPY_LEN) { | |
| 1152 for(;length>=4;length-=4,offset+=4) | |
| 1153 emit_copy(from,to,4,offset,0,det); | |
| 1154 for(;length>=2;length-=2,offset+=2) | |
| 1155 emit_copy(from,to,2,offset,0,det); | |
| 1156 if(length>0) | |
| 1157 emit_copy(from,to,length,offset,0,det); | |
| 1158 break; | |
| 1159 } | |
| 1160 code_save_stacks(); | |
| 1161 printf("\tli $6,%d\n",length); | |
| 1162 printf("\tmr $5,%s\n",frn); | |
| 1163 printf("\tmr $4,%s\n",trn); | |
| 130 | 1164 /* overrap must be allowed */ |
| 148 | 1165 printf("\tbl L_%s$stub\n",memmove); |
| 130 | 1166 fix=0; |
| 148 | 1167 set_creg(RET_REGISTER,0); |
| 1168 if (creg!=to) { | |
| 1169 free_register(to); to = creg; | |
| 1170 } | |
| 1171 break; | |
| 130 | 1172 } |
| 149 | 1173 if (value) { |
| 130 | 1174 /* creg must point top of the destination data */ |
| 1175 /* this code is necessary for the value of assignment or function call */ | |
| 1176 /* otherwise we don't need this */ | |
| 148 | 1177 if (fix) printf("\taddi %s,%s,%d\n",trn,trn,fix); |
| 1178 if(creg!=to) { | |
| 1179 free_register(creg); creg=to; | |
| 1180 } | |
| 130 | 1181 } |
| 1182 free_register(dreg); | |
| 1183 regv[from]=regv[to]=regv[dreg]=0; | |
| 1184 regv[creg]=1; | |
| 1185 } | |
| 1186 | |
| 1187 int | |
| 1188 struct_push(int e4,int t,int arg) | |
| 1189 { | |
| 1190 int length,count; | |
| 1191 int dreg,sreg; char *drn,*crn,*srn; | |
| 1192 g_expr(e4); | |
| 1193 length=size(t); | |
| 1194 if(length%size_of_int) { | |
| 1195 length += size_of_int - (length%size_of_int); | |
| 1196 } | |
| 1197 dreg = get_register(); if (!dreg) error(-1); | |
| 1198 drn = register_name(dreg); | |
| 1199 crn = register_name(creg); | |
| 1200 if (length<MAX_COPY_LEN) { | |
| 1201 sreg = get_register(); if (!sreg) error(-1); | |
| 1202 srn = register_name(sreg); | |
| 1203 code_lvar(cadr(arg),sreg); | |
| 1204 for(count=0;length<MAX_COPY_LEN;count++,length-=size_of_int) { | |
| 1205 if (length==0) { | |
| 1206 free_register(sreg); | |
| 1207 free_register(dreg); | |
| 1208 return count; | |
| 1209 } else { | |
| 148 | 1210 printf("\tlw %s,%d(%s)\n",drn,length-size_of_int,crn); |
| 1211 printf("\tsw %s,%d(%s)\n",drn,length-size_of_int,srn); | |
| 130 | 1212 } |
| 1213 } | |
| 1214 } | |
| 1215 code_lvar(cadr(arg),dreg); | |
| 1216 /* downward direction copy */ | |
| 1217 emit_copy(creg,dreg,length,0,0,1); | |
| 1218 if (dreg) free_register(dreg); | |
| 1219 return length/size_of_int; | |
| 1220 } | |
| 1221 | |
| 1222 void | |
| 1223 set_creg(int reg,int mode) | |
| 1224 { | |
| 148 | 1225 if (!is_int_reg(reg)) error(-1); |
| 130 | 1226 if (reg!=creg) { |
| 148 | 1227 if (reg!=ireg && mode) |
| 150 | 1228 printf("\tmove %s,%s\n",register_name(reg),register_name(ireg)); |
| 130 | 1229 free_register(creg); |
| 148 | 1230 creg = ireg = reg; |
| 130 | 1231 regs[creg]=1; |
| 1232 } | |
| 1233 } | |
| 1234 | |
| 1235 void | |
| 1236 set_freg(int reg,int mode) | |
| 1237 { | |
| 148 | 1238 if (!is_float_reg(reg)) error(-1); |
| 1239 if (reg!=creg) { | |
| 1240 if (reg!=freg && mode) { | |
| 1241 printf("\tfmove %s,%s\n",fregister_name(reg),fregister_name(freg)); | |
| 1242 } | |
| 1243 free_register(creg); | |
| 1244 creg = freg = reg; | |
| 1245 regs[freg]=1; | |
| 130 | 1246 } |
| 1247 } | |
| 1248 | |
| 149 | 1249 static void |
| 1250 move_dreg(int reg,int dreg) | |
| 1251 { | |
| 1252 if (reg!=dreg) { | |
| 1253 printf("\tmove %s,%s\n",dregister_name0(reg), | |
| 1254 dregister_name0(dreg)); | |
| 1255 printf("\tmove %s,%s\n",dregister_name1(reg), | |
| 1256 dregister_name1(dreg)); | |
| 1257 } | |
| 1258 } | |
| 1259 | |
| 130 | 1260 void |
| 148 | 1261 set_dreg(int reg,int mode) |
| 1262 { | |
| 1263 if (!is_double_reg(reg)) error(-1); | |
| 1264 if (reg!=creg) { | |
| 149 | 1265 if (mode) { |
| 1266 move_dreg(reg,dreg); | |
| 148 | 1267 } |
| 1268 free_register(creg); | |
| 1269 creg = dreg = reg; | |
| 1270 regs[dreg]=1; | |
| 152 | 1271 regs[dreg_pair0[dreg-DREG_OFFSET]]=1; |
| 1272 regs[dreg_pair1[dreg-DREG_OFFSET]]=1; | |
| 148 | 1273 } |
| 1274 } | |
| 1275 | |
| 1276 | |
| 1277 void | |
| 130 | 1278 use_var(int arg) |
| 1279 { | |
| 1280 if (car(arg)==REGISTER) | |
| 1281 regs[cadr(arg)]=USING_REG; | |
| 148 | 1282 else if (car(arg)==FREGISTER) |
| 1283 regs[cadr(arg)]=USING_REG; | |
| 130 | 1284 else if (car(arg)==DREGISTER) |
| 148 | 1285 regs[cadr(arg)]=USING_REG; |
| 130 | 1286 } |
| 1287 | |
| 1288 void | |
| 1289 code_save_input_registers() | |
| 1290 { | |
| 1291 int args; | |
| 1292 NMTBL *n; | |
| 1293 int reg; | |
| 1294 int tag; | |
| 1295 int lvar; | |
| 1296 int t; | |
| 1297 /* fnptr->dsp=list4(type,fnptr->dsp,(int)n,0); */ | |
| 1298 int reg_offset = 0; | |
| 1299 int offset = 0; | |
| 1300 | |
| 1301 for(args = fnptr->dsp;args;args = cadr(args)) { | |
| 1302 n = (NMTBL *)caddr(args); | |
| 1303 tag = n->sc; | |
| 1304 reg = n->dsp; | |
| 1305 if (!n||n==&null_nptr) error(REG_ERR); | |
| 1306 if (tag==REGISTER) { | |
| 1307 /* regs[reg]==INPUT_REG case should be considered */ | |
| 1308 n->dsp = offset; | |
| 1309 offset+=size_of_int; | |
| 1310 t = INT; | |
| 1311 reg += reg_offset; /* for duplicated floating point argument */ | |
| 148 | 1312 } else if (tag==FREGISTER) { |
| 1313 /* fregs[reg]==INPUT_REG case should be considered */ | |
| 1314 n->dsp = offset; | |
| 1315 t = n->ty; | |
| 1316 if(t==FLOAT) { offset+=size_of_float; reg_offset+=1; } | |
| 1317 else if(t==DOUBLE) { offset+=size_of_double; reg_offset+=2; } | |
| 1318 else error(-1); | |
| 1319 } else if (tag==DREGISTER) { | |
| 1320 /* fregs[reg]==INPUT_REG case should be considered */ | |
| 1321 n->dsp = offset; | |
| 1322 t = n->ty; | |
| 1323 if(t==FLOAT) { offset+=size_of_float; reg_offset+=1; } | |
| 1324 else if(t==DOUBLE) { offset+=size_of_double; reg_offset+=2; } | |
| 1325 else error(-1); | |
| 130 | 1326 } else { |
| 1327 offset += size(n->ty); | |
| 1328 continue; | |
| 1329 } | |
| 1330 n->sc = LVAR; | |
| 1331 lvar = list2(LVAR,n->dsp); | |
| 1332 g_expr_u(assign_expr0(list2(LVAR,n->dsp),list3(tag,reg,(int)n),n->ty,t)); | |
| 148 | 1333 if (tag==REGISTER||tag==DREGISTER||tag==FREGISTER) { |
| 130 | 1334 free_register(reg); |
| 1335 } | |
| 1336 } | |
| 1337 my_func_args = offset; | |
| 1338 } | |
| 1339 | |
| 1340 int | |
| 1341 simple_args(int e3) | |
| 1342 { | |
| 1343 return | |
| 1344 !contains_in_list(e3,FUNCTION) && | |
| 1345 !contains_in_list(e3,CONV) && | |
| 1346 !contains_in_list(e3,RSTRUCT) && | |
| 164 | 1347 !contains_in_list(e3,STASS) |
| 130 | 1348 ; |
| 1349 } | |
| 1350 | |
| 1351 int | |
| 1352 caller_arg_offset_v(int arg) | |
| 1353 { | |
| 1354 return ARG_LVAR_OFFSET+arg*size_of_int; | |
| 1355 } | |
| 1356 | |
| 1357 int | |
| 1358 function(int e1) | |
| 1359 { | |
| 150 | 1360 int e2,e3,e4,nargs,t; |
| 130 | 1361 int arg,reg_arg,freg_arg,arg_assign; |
| 148 | 1362 int dots; |
| 130 | 1363 int reg_arg_list=0,ret_type,special_lvar; |
| 1364 NMTBL *fn = 0; | |
| 1365 int jmp = 0; | |
| 1366 char *jrn; | |
| 153 | 1367 int iargs=0; |
| 130 | 1368 |
| 1369 special_lvar = -1; | |
| 148 | 1370 ret_type = cadr(cadddr(e1)); |
| 1371 if (ret_type==CHAR) ret_type=INT; | |
| 1372 | |
| 1373 /* check argments type is DOTS? */ | |
| 1374 t = caddr(cadddr(e1)); | |
| 1375 if (t==0 || t==DOTS) dots = 1; | |
| 1376 else { | |
| 1377 dots = 0; | |
| 1378 for(t = caddr(cadddr(e1));t;t = cadr(t)) { | |
| 1379 if (car(t)==DOTS) dots = 1; | |
| 1380 } | |
| 1381 } | |
| 130 | 1382 |
| 1383 e2 = cadr(e1); | |
| 1384 if (car(e2) == FNAME) { | |
| 1385 fn=(NMTBL *)cadr(e2); | |
| 1386 } else { | |
| 1387 jmp = get_register_var(0); | |
| 1388 if (car(jmp)!=REGISTER) error(-1); | |
| 1389 reg_arg_list = list2(jmp,reg_arg_list); | |
| 1390 g_expr(e2); | |
| 1391 code_register(creg,cadr(jmp)); | |
| 1392 /* g_expr(assign_expr0(jmp,e2,INT,INT)); functions are lvalue */ | |
| 1393 } | |
| 1394 | |
| 1395 /* now all input register vars are free */ | |
| 1396 code_save_stacks(); | |
| 1397 set_creg(CREG_REGISTER,0); | |
| 1398 set_freg(FREG_FREGISTER,0); | |
| 148 | 1399 set_dreg(DREG_DREGISTER,0); |
| 130 | 1400 |
| 1401 nargs = reg_arg = freg_arg = arg_assign = 0; | |
| 1402 for (e3 = reverse0(caddr(e1)); e3; e3 = cadr(e3)) { | |
| 1403 t=caddr(e3); | |
| 1404 e4 = car(e3); | |
| 1405 if(scalar(t)) { | |
| 1406 if (reg_arg>=MAX_INPUT_REGISTER_VAR) { | |
| 1407 arg = list2(LVAR,caller_arg_offset_v(nargs)); | |
| 1408 } else if (!simple_args(e3) && cadr(e3)) { | |
| 1409 arg = get_register_var(0); | |
| 1410 arg_assign = list2( | |
| 148 | 1411 assign_expr0(get_input_register_var(reg_arg,0,0), |
| 1412 arg,t,t), | |
| 130 | 1413 arg_assign); |
| 1414 } else { | |
| 1415 arg = get_input_register_var(reg_arg,0,0); | |
| 1416 } | |
| 1417 use_var(arg); /* protect from input register free */ | |
| 1418 reg_arg_list = list2(arg,reg_arg_list); | |
| 1419 g_expr_u(assign_expr0(arg,e4,t,t)); | |
| 153 | 1420 nargs ++ ; reg_arg++; iargs += size_of_int; |
| 130 | 1421 continue; |
| 1422 } else if (t==DOUBLE||t==FLOAT) { | |
| 1423 if (freg_arg>=MAX_INPUT_DREGISTER_VAR) { | |
| 1424 arg = list2(LVAR,caller_arg_offset_v(nargs)); | |
| 148 | 1425 } else if (!simple_args(e3) && cadr(e3)) { |
| 138 | 1426 arg = get_dregister_var(0,1); |
| 130 | 1427 arg_assign = list2( |
| 148 | 1428 assign_expr0(get_input_dregister_var(freg_arg,0,0,1), |
| 1429 arg,t,t), | |
| 130 | 1430 arg_assign); |
| 1431 } else { | |
| 138 | 1432 arg = get_input_dregister_var(freg_arg,0,0,1); |
| 130 | 1433 } |
| 1434 use_var(arg); /* protect from input register free */ | |
| 1435 reg_arg_list = list2(arg,reg_arg_list); | |
| 1436 g_expr_u(assign_expr0(arg,e4,t,t)); /* XXX */ | |
| 1437 freg_arg++; | |
| 1438 nargs += size(t)/size_of_int; | |
| 153 | 1439 if (t==DOUBLE) iargs += size(t); |
| 130 | 1440 continue; |
| 1441 } else if (car(t)==STRUCT||car(t)==UNION) { | |
| 1442 arg = list2(LVAR,caller_arg_offset_v(nargs)); | |
| 1443 nargs += struct_push(e4,t,arg); | |
| 153 | 1444 iargs += ((size(t)+3)/size_of_int)*size_of_int; |
| 130 | 1445 continue; |
| 1446 } else { | |
| 1447 error(TYERR); | |
| 1448 } | |
| 1449 ++nargs; | |
| 1450 } | |
| 1451 if (max_func_args<nargs) max_func_args=nargs; | |
| 153 | 1452 if (max_func_iargs<iargs) max_func_iargs=iargs; |
| 130 | 1453 for(;arg_assign;arg_assign=cadr(arg_assign)) { |
| 1454 g_expr_u(car(arg_assign)); | |
| 1455 } | |
| 1456 if (car(e2) == FNAME) { | |
| 1457 printf("\tbl\tL_%s$stub\n",fn->nm); | |
| 1458 } else { | |
| 1459 jrn = register_name(cadr(jmp)); | |
| 131 | 1460 printf("\tj %s\n",jrn); |
| 130 | 1461 } |
| 1462 for(;reg_arg_list;reg_arg_list=cadr(reg_arg_list)) { | |
| 1463 arg = car(reg_arg_list); | |
| 148 | 1464 if (car(arg)==REGISTER||car(arg)==DREGISTER||car(arg)==FREGISTER) |
| 1465 free_register(cadr(arg)); | |
| 130 | 1466 else if (car(arg)==LVAR&&cadr(arg)<0) free_lvar(cadr(arg)); |
| 1467 } | |
| 148 | 1468 if (ret_type==DOUBLE) { |
| 1469 set_dreg(RET_DREGISTER,0); | |
| 1470 regv[dreg]=1; regv[creg]=0; | |
| 1471 } else if (ret_type==FLOAT) { | |
| 130 | 1472 set_freg(RET_FREGISTER,0); |
| 148 | 1473 regv[freg]=1; regv[creg]=0; |
| 130 | 1474 } else if (ret_type==VOID) { |
| 148 | 1475 regv[freg]=0; regv[creg]=0; |
| 130 | 1476 } else { |
| 1477 set_creg(RET_REGISTER,0); | |
| 148 | 1478 regv[freg]=0; regv[creg]=1; |
| 130 | 1479 } |
| 1480 return ret_type; | |
| 1481 } | |
| 1482 | |
| 1483 void | |
| 1484 code_frame_pointer(int e3) { | |
| 1485 #if R1SAVE | |
| 131 | 1486 printf("\tmove $fp,%s\n",register_name(e3)); |
| 130 | 1487 #else |
| 131 | 1488 printf("\tmove $fp,%s\n",register_name(e3)); |
| 130 | 1489 #endif |
| 1490 } | |
| 1491 | |
| 1492 | |
| 1493 void | |
| 1494 code_fix_frame_pointer(int disp_offset) { | |
| 1495 int l = 0; | |
| 131 | 1496 printf("\tla $fp,"); |
| 1497 printf("%d+L_%d($sp)\n",FUNC_LVAR,lvar_offset_label); | |
| 130 | 1498 } |
| 1499 | |
| 1500 void | |
| 1501 code_jmp(char *s) { | |
| 1502 max_reg_var = REG_VAR_BASE-REG_VAR_MIN; | |
| 1503 max_freg_var = FREG_VAR_BASE-FREG_VAR_MIN; | |
| 131 | 1504 printf("\tj L_%s\n",s); |
| 130 | 1505 } |
| 1506 | |
| 1507 | |
| 1508 void | |
| 1509 code_indirect_jmp(int e2) { | |
| 1510 max_reg_var = REG_VAR_BASE-REG_VAR_MIN; | |
| 1511 max_freg_var = FREG_VAR_BASE-FREG_VAR_MIN; | |
| 131 | 1512 printf("\tj %s\n",register_name(e2)); |
| 130 | 1513 } |
| 1514 | |
| 1515 int | |
| 196 | 1516 code_rindirect(int e1, int offset, int us) |
| 1517 { | |
| 1518 char *crn; | |
| 1519 g_expr(e1); | |
| 1520 crn=register_name(creg); | |
| 1521 printf("\tlw %s,%d(%s)\n",crn,offset,crn); | |
| 1522 return INT; | |
| 1523 } | |
| 1524 | |
| 1525 int | |
| 1526 code_crindirect(int e1, int offset, int us) | |
| 130 | 1527 { |
| 1528 char *crn; | |
| 196 | 1529 g_expr(e1); |
| 1530 crn=register_name(creg); | |
| 1531 if (us) { | |
| 1532 printf("\tlbu %s,%d(%s)\n",crn,offset,crn); | |
| 1533 return UCHAR; | |
| 1534 } else { | |
| 1535 printf("\tlb %s,%d(%s)\n",crn,offset,crn); | |
| 1536 return CHAR; | |
| 130 | 1537 } |
| 196 | 1538 } |
| 1539 | |
| 1540 int | |
| 1541 code_srindirect(int e1, int offset, int us) | |
| 1542 { | |
| 1543 char *crn; | |
| 1544 g_expr(e1); | |
| 130 | 1545 crn=register_name(creg); |
| 196 | 1546 if (us) { |
| 1547 printf("\tlhu %s,%d(%s)\n",crn,offset,crn); | |
| 1548 return USHORT; | |
| 1549 } else { | |
| 1550 printf("\tlh %s,%d(%s)\n",crn,offset,crn); | |
| 1551 return SHORT; | |
| 1552 } | |
| 1553 } | |
| 1554 | |
| 1555 #if FLOAT_CODE | |
| 1556 int | |
| 1557 code_drindirect(int e1, int offset, int d) | |
| 1558 { | |
| 1559 char *crn; | |
| 1560 g_expr(e1); | |
| 1561 crn=register_name(creg); | |
| 1562 if (d) { | |
| 149 | 1563 printf("\tlw %s,%d(%s)\n", |
| 1564 dregister_name0(dreg),offset,crn); | |
| 1565 printf("\tlw %s,%d(%s)\n", | |
| 1566 dregister_name1(dreg),offset+size_of_int,crn); | |
| 1567 regv[creg]=0; regv[dreg]=1; | |
| 1568 creg = dreg; | |
| 148 | 1569 return DOUBLE; |
| 196 | 1570 } else { |
| 1571 printf("\tl.s %s,%d(%s)\n", fregister_name(freg),offset,crn); | |
| 1572 regv[creg]=0; regv[freg]=1; | |
| 1573 creg = freg; | |
| 1574 return FLOAT; | |
| 130 | 1575 } |
| 1576 } | |
| 196 | 1577 #endif |
| 1578 | |
| 1579 #if LONGLONG_CODE | |
| 1580 int | |
| 1581 code_lrindirect(int e1, int offset, int us) | |
| 1582 { | |
| 1583 char *crn; | |
| 1584 g_expr(e1); | |
| 1585 crn=register_name(creg); | |
| 1586 } | |
| 1587 #endif | |
| 130 | 1588 |
| 1589 void | |
| 1590 code_assign_gvar(int e2,int creg,int byte) { | |
| 151 | 1591 char *crn,*name; |
|
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1592 |
| 151 | 1593 name = ((NMTBL*)cadr(e2))->nm; |
| 130 | 1594 crn=register_name(creg); |
| 167 | 1595 if (byte==1) { |
| 151 | 1596 printf("\tsb %s,%s\n",crn,name); |
| 167 | 1597 } if (byte==size_of_short) { |
| 1598 printf("\tsh %s,%s\n",crn,name); | |
| 130 | 1599 } else { |
| 151 | 1600 printf("\tsw %s,%s\n",crn,name); |
| 130 | 1601 } |
| 1602 } | |
| 1603 | |
| 1604 void | |
| 1605 code_assign_lvar(int e2,int creg,int byte) { | |
| 1606 char *crn; | |
| 1607 crn=register_name(creg); | |
| 167 | 1608 if (byte==1) { |
| 1609 printf("\tsb %s,",crn); | |
| 1610 } else if (byte==size_of_short) { | |
| 1611 printf("\tsh %s,",crn); | |
| 130 | 1612 } else { |
| 167 | 1613 printf("\tsw %s,",crn); |
| 130 | 1614 } |
| 167 | 1615 lvar(e2); |
| 130 | 1616 } |
| 1617 | |
| 1618 void | |
| 1619 code_assign_register(int e2,int byte,int creg) { | |
| 1620 if (e2!=creg) | |
| 148 | 1621 printf("\tmove %s,%s\n",register_name(e2),register_name(creg)); |
| 130 | 1622 } |
| 1623 | |
| 1624 void | |
| 1625 code_assign(int e2,int byte,int creg) { | |
| 1626 char *drn=register_name(e2); | |
| 1627 char *crn=register_name(creg); | |
| 1628 | |
| 167 | 1629 if (byte==1) { |
| 148 | 1630 printf("\tsb %s,0(%s)\n",crn,drn); |
| 167 | 1631 } else if (byte==size_of_short) { |
| 1632 printf("\tsh %s,0(%s)\n",crn,drn); | |
| 130 | 1633 } else { |
| 148 | 1634 printf("\tsw %s,0(%s)\n",crn,drn); |
| 130 | 1635 } |
| 148 | 1636 regv[creg]=1; |
| 130 | 1637 } |
| 1638 | |
| 1639 | |
| 1640 void | |
| 1641 code_register_assop(int e2,int op,int byte) { | |
| 1642 int reg; | |
| 1643 int xreg = creg; | |
| 1644 creg = reg = e2; | |
| 1645 tosop(op,xreg); | |
| 1646 creg = xreg; | |
| 1647 if (creg!=reg) | |
| 148 | 1648 printf("\tmove %s,%s\n",register_name(creg),register_name(reg)); |
| 1649 regv[creg]=1; | |
| 130 | 1650 } |
| 1651 | |
| 1652 | |
| 1653 void | |
| 163 | 1654 code_assop(int op,int byte,int sign) { |
| 130 | 1655 char *xrn,*crn,*drn; |
| 1656 int xreg; | |
| 1657 int edx = get_register(); if(!edx) error(-1); | |
| 1658 xrn = register_name(xreg = emit_pop(0)); /* pop e3 value */ | |
| 1659 regv[xreg]=regs[xreg]=1; | |
| 1660 printf("# assop\n\tmr %s,%s\n",register_name(edx),register_name(creg)); | |
| 1661 regv[edx]=1; | |
| 163 | 1662 ld_indexx(byte,0,edx,sign); |
| 130 | 1663 tosop(op,xreg); |
| 1664 crn = register_name(creg); | |
| 1665 drn = register_name(edx); | |
| 168 | 1666 printf("\t%s %s,0(%s)\n",cstore(byte),crn,drn); |
| 130 | 1667 free_register(edx); |
| 1668 emit_pop_free(xreg); | |
| 148 | 1669 regv[creg]=1; |
| 130 | 1670 } |
| 1671 | |
| 1672 | |
| 1673 void | |
| 1674 tosop(int op,int oreg) | |
| 1675 { | |
| 1676 int dx; | |
| 149 | 1677 char *orn,*crn; |
| 130 | 1678 |
| 1679 if(oreg==-1) { | |
| 1680 error(-1); | |
| 1681 } else if (oreg<= -REG_LVAR_OFFSET) { | |
| 1682 dx = get_register(); if (dx<0) error(-1); | |
| 1683 code_rlvar(oreg+REG_LVAR_OFFSET,dx); | |
| 1684 oreg = dx; | |
| 1685 regv[oreg]=1; | |
| 1686 } | |
| 1687 | |
| 1688 switch(op) { | |
| 1689 case LSHIFT: | |
| 1690 case ULSHIFT: | |
| 131 | 1691 shift("sll",oreg); |
| 148 | 1692 regv[creg]=1; |
| 130 | 1693 return; |
| 1694 case RSHIFT: | |
| 131 | 1695 shift("srl",oreg); |
| 148 | 1696 regv[creg]=1; |
| 130 | 1697 return; |
| 1698 case URSHIFT: | |
| 131 | 1699 shift("sra",oreg); |
| 148 | 1700 regv[creg]=1; |
| 130 | 1701 return; |
| 1702 } | |
| 1703 orn = register_name(oreg); | |
| 1704 crn = register_name(creg); | |
| 1705 switch(op) { | |
| 1706 case ADD: | |
| 131 | 1707 printf("\taddu %s,%s,%s\n",crn,crn,orn); |
| 130 | 1708 break; |
| 1709 case SUB: | |
| 131 | 1710 printf("\tsubu %s,%s,%s\n",crn,crn,orn); |
| 130 | 1711 break; |
| 1712 case CMP: | |
| 131 | 1713 printf("\tslt %s,%s\n",crn,orn); |
| 130 | 1714 break; |
| 1715 case BAND: | |
| 1716 printf("\tand %s,%s,%s\n",crn,crn,orn); | |
| 1717 break; | |
| 1718 case EOR: | |
| 1719 printf("\txor %s,%s,%s\n",crn,crn,orn); | |
| 1720 break; | |
| 1721 case BOR: | |
| 1722 printf("\tor %s,%s,%s\n",crn,crn,orn); | |
| 1723 break; | |
| 1724 case MUL: | |
| 131 | 1725 printf("\tmult %s,%s,%s\n",crn,crn,orn); |
| 130 | 1726 break; |
| 1727 case UMUL: | |
| 131 | 1728 printf("\tmultu %s,%s,%s\n",crn,crn,orn); |
| 130 | 1729 break; |
| 148 | 1730 case DIV: |
| 1731 printf("\tdivw %s,%s,%s\n",crn,crn,orn); | |
| 1732 break; | |
| 149 | 1733 case UDIV: case MOD: case UMOD: |
| 148 | 1734 printf("\t%s $0,%s,%s\n",(op==UDIV||op==UMOD)?"divu":"div",crn,orn); |
| 1735 printf("\t%s %s\n",(op==MOD||op==UMOD)?"mflo":"mfhi",crn); | |
| 1736 printf("\t.set noreorder\n"); | |
| 1737 printf("\tbeql %s,$0,1f\n",orn); | |
| 1738 printf("\tbreak 7\n"); | |
| 1739 printf("1:\n"); | |
| 1740 printf("\t.set reorder\n"); | |
| 1741 break; | |
| 130 | 1742 default: |
| 1743 error(-1); | |
| 1744 } | |
| 1745 if(oreg!=creg) free_register(oreg); | |
| 148 | 1746 regv[creg]=1; |
| 130 | 1747 } |
| 1748 | |
| 1749 | |
| 1750 void | |
| 1751 shift(char *op, int reg) | |
| 1752 { | |
| 1753 char *crn = register_name(creg); | |
| 1754 char *rrn = register_name(reg); | |
| 1755 printf("\t%s %s,%s,%s\n",op,crn,rrn,crn); | |
| 1756 } | |
| 1757 | |
| 189 | 1758 int |
| 1759 code_const_op_p(int op,int v) | |
| 1760 { | |
| 1761 if (op==BAND||op==DIV||op==UDIV||op==MOD||op==UMOD) return 0; | |
| 1762 return 0; | |
| 1763 } | |
| 1764 | |
| 1765 void | |
| 1766 oprtc(int op,int v) | |
| 1767 { | |
| 1768 } | |
| 1769 | |
| 1770 | |
| 130 | 1771 void |
| 163 | 1772 ld_indexx(int byte, int n, int xreg,int sign) |
| 130 | 1773 { |
| 1774 char *crn = register_name(creg); | |
| 168 | 1775 printf("\t%s %s,%d(%s)\n",cload(sign,byte),crn,n, |
| 1776 register_name(xreg)); | |
| 130 | 1777 } |
| 1778 | |
| 1779 int | |
| 1780 code_csvalue() | |
| 1781 { | |
| 1782 return creg; | |
| 1783 } | |
| 1784 | |
| 1785 void | |
| 1786 code_cmpdimm(int e, int csreg) | |
| 1787 { | |
| 1788 /* used in dosiwtch() */ | |
| 1789 if(chk) return; | |
| 150 | 1790 creg = use_int(creg); |
| 131 | 1791 printf("\tli %s,%d\n",register_name(creg),e); |
| 148 | 1792 cmpreg = csreg; |
| 1793 regv[cmpreg]=2; /* prevent from freeing */ | |
| 130 | 1794 } |
| 1795 | |
| 1796 void | |
|
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1797 code_opening(char *s) |
| 130 | 1798 { |
| 131 | 1799 /* this is called once per month */ |
| 1800 char *p=cheapp; | |
| 1801 | |
|
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1802 printf("\t.file \"%s\"\n",s); |
| 130 | 1803 /* printf("\t.version\t\"01.01\"\n"); */ |
| 1804 /* printf("gcc2_compiled.:\n"); */ | |
| 131 | 1805 printf("\t.abicalls\n"); |
| 1806 printf("\t.text\n"); | |
| 1807 | |
| 1808 if (asi) { | |
| 148 | 1809 fclose(asi); |
| 1810 asi = 0; | |
| 131 | 1811 } |
| 1812 while ((*cheapp++ = *s++)) { | |
| 1813 if (*s=='.') { | |
| 1814 *cheapp++=*s++; *cheapp++='i'; | |
| 148 | 1815 *cheapp++=0; |
| 131 | 1816 break; |
| 1817 } | |
| 1818 } | |
| 1819 asi = fopen(p,"w"); | |
|
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1820 printf(".include \"%s\"\n",p); |
| 131 | 1821 if (!asi) error(-1); |
| 130 | 1822 } |
| 1823 | |
| 1824 void | |
| 1825 rexpr(int e1, int l1, char *s,int t) | |
| 1826 { | |
| 132 | 1827 char *crn,*drn; |
| 148 | 1828 if (cmpreg>=0) { free_register(cmpreg); cmpreg = -1; } |
| 132 | 1829 |
| 1830 g_expr(cadr(e1)); | |
| 1831 emit_push(); | |
| 1832 g_expr(caddr(e1)); | |
| 150 | 1833 cmpreg = emit_pop(0); |
| 132 | 1834 crn = register_name(creg); |
| 148 | 1835 drn = register_name(cmpreg); |
| 132 | 1836 |
| 1837 if (s[1] == 's') { | |
| 148 | 1838 if (s[16]=='x') { |
| 1839 /* slt $2,$2,$3; xroi $2,$2,0x1; beq $2,$0,L1 */ | |
| 1840 printf(s,crn,drn,drn,crn,crn,crn,l1); | |
| 1841 } else { | |
| 1842 /* slt $2,$2,$3; beq $2,$0,L1 */ | |
| 1843 printf(s,crn,drn,drn,crn,l1); | |
| 1844 } | |
| 132 | 1845 } else { |
| 148 | 1846 /* beq $2,$3,L1 */ |
| 1847 printf(s,crn,drn,l1); | |
| 132 | 1848 } |
| 148 | 1849 free_register(cmpreg) ; cmpreg = -1; |
| 130 | 1850 } |
| 1851 | |
| 1852 void | |
| 1853 jcond(int l, char cond) | |
| 131 | 1854 { |
| 130 | 1855 if (chk) return; |
| 148 | 1856 if (cmpreg==-1) error(-1); |
| 150 | 1857 printf("\tb%s %s,%s,L_%d\n", |
| 1858 cond?"ne":"eq", | |
| 1859 register_name(creg),register_name(cmpreg), | |
| 1860 l); | |
| 148 | 1861 if (regv[cmpreg]==1) { |
| 1862 free_register(cmpreg); cmpreg = -1; | |
| 132 | 1863 } |
| 131 | 1864 regv[creg]=0; |
| 130 | 1865 } |
| 1866 | |
| 1867 void | |
| 1868 jmp(int l) | |
| 1869 { | |
| 1870 control=0; | |
| 1871 if (chk) return; | |
| 131 | 1872 printf("\tj\tL_%d\n",l); |
| 130 | 1873 } |
| 1874 | |
| 1875 void | |
| 1876 gen_comment(char *s) | |
| 1877 { | |
| 1878 if (chk) return; | |
| 1879 printf("## %s",s); | |
| 1880 } | |
| 1881 | |
| 1882 void | |
| 1883 code_enter(char *name) | |
| 1884 { | |
| 1885 if (output_mode!=TEXT_EMIT_MODE) | |
| 1886 text_mode(); | |
| 1887 else | |
| 132 | 1888 printf("\t.align 3\n"); |
| 153 | 1889 /* if (stmode!=STATIC) |
| 1890 printf(".globl _%s\n",name); */ | |
| 132 | 1891 printf(".ent %s\n",name); |
| 130 | 1892 printf("_%s:\n",name); |
| 1893 code_disp_label=fwdlabel(); | |
| 132 | 1894 |
| 1895 printf("\t.set noreorder\n"); | |
| 1896 printf("\t.cpload $25\n"); | |
| 1897 printf("\t.set reorder\n"); | |
| 1898 printf("\tsubu $sp,$sp,L_%d\n",code_disp_label); | |
| 153 | 1899 printf("\t.cprestore L_%d\n",cprestore_label); |
| 148 | 1900 |
| 130 | 1901 max_func_args = 0; |
| 153 | 1902 max_func_iargs = 0; |
| 130 | 1903 } |
| 1904 | |
| 1905 | |
| 1906 void | |
| 1907 code_enter1(int args) | |
| 1908 { | |
| 1909 set_creg(CREG_REGISTER,0); | |
| 1910 set_freg(FREG_FREGISTER,0); | |
| 148 | 1911 set_dreg(DREG_DREGISTER,0); |
| 130 | 1912 } |
| 1913 | |
| 1914 void | |
| 1915 code_leave(char *name) | |
| 1916 { | |
| 1917 int r1_offsetv; | |
| 1918 disp&= -size_of_int; | |
| 1919 r1_offsetv = -disp+max_func_args*size_of_int+code_disp_offset; | |
| 1920 | |
| 132 | 1921 fprintf(asi,"L_%d=%d\n",code_disp_label,-r1_offsetv); |
| 148 | 1922 |
| 130 | 1923 local_table(); |
| 1924 free_all_register(); | |
| 1925 } | |
| 1926 | |
| 1927 void | |
| 1928 enter(char *name) | |
| 1929 { | |
| 1930 if (output_mode!=TEXT_EMIT_MODE) | |
| 1931 text_mode(); | |
| 1932 else | |
| 1933 printf("\t.align 2\n"); | |
| 153 | 1934 /* if (stmode!=STATIC) |
| 1935 printf(".globl _%s\n",name); */ | |
| 132 | 1936 printf(".ent %s\n",name); |
| 130 | 1937 printf("_%s:\n",name); |
| 132 | 1938 |
| 130 | 1939 r1_offset_label = fwdlabel(); |
| 1940 lvar_offset_label = fwdlabel(); | |
| 152 | 1941 disp_label = fwdlabel(); |
| 132 | 1942 mask_label = fwdlabel(); |
| 1943 mask1_label = fwdlabel(); | |
| 1944 fmask_label = fwdlabel(); | |
| 1945 fmask1_label = fwdlabel(); | |
| 152 | 1946 cprestore_label = fwdlabel(); |
| 132 | 1947 |
| 1948 printf("\t.frame $fp,L_%d,$31\n",r1_offset_label); | |
| 1949 printf("\t.mask L_%d,L_%d\n",mask_label,mask1_label); | |
| 1950 printf("\t.fmask L_%d,L_%d\n",fmask_label,fmask1_label); | |
| 1951 | |
| 1952 printf("\t.set noreorder\n"); | |
| 1953 printf("\t.cpload $25\n"); | |
| 1954 printf("\t.set reorder\n"); | |
| 152 | 1955 printf("\tsubu $sp,$sp,L_%d\n",disp_label); |
| 153 | 1956 printf("\t.cprestore L_%d\n",cprestore_label); |
| 130 | 1957 max_func_args = 0; |
| 153 | 1958 max_func_iargs = 0; |
| 148 | 1959 |
| 130 | 1960 } |
| 1961 | |
| 1962 void | |
| 1963 enter1() | |
| 1964 { | |
| 1965 set_creg(CREG_REGISTER,0); | |
| 1966 set_freg(FREG_FREGISTER,0); | |
| 148 | 1967 set_dreg(DREG_DREGISTER,0); |
| 130 | 1968 } |
| 1969 | |
| 153 | 1970 static unsigned int |
| 1971 code_mask_label() | |
| 130 | 1972 { |
| 153 | 1973 int i; |
| 1974 unsigned int mask=0; | |
| 1975 for(i=0;i<32;i++) { | |
| 1976 if (i==28||i==31||(REG_VAR_MIN<=i&&i<=REG_VAR_MIN+max_reg_var)) { | |
| 1977 mask |= (1<<i); | |
| 1978 } | |
| 1979 } | |
| 1980 return mask; | |
| 130 | 1981 } |
| 1982 | |
| 153 | 1983 static unsigned int |
| 1984 code_fmask_label() | |
| 1985 { | |
| 1986 int i; | |
| 1987 unsigned int mask=0; | |
| 1988 for(i=0;i<32;i++) { | |
| 1989 if (FREG_VAR_MIN<=i&&i<=FREG_VAR_MIN+max_freg_var) { | |
| 1990 mask |= (1<<i); | |
| 1991 } | |
| 1992 } | |
| 1993 return mask; | |
| 1994 } | |
| 1995 | |
| 1996 | |
| 130 | 1997 void |
| 1998 leave(int control, char *name) | |
| 1999 { | |
| 131 | 2000 int retcont1=0,sz; |
| 152 | 2001 int r1_offsetv; |
| 130 | 2002 |
| 2003 if (max_freg_var>=0 && max_freg_var<=3) max_freg_var=3; | |
| 153 | 2004 reg_save = |
| 2005 (REAL_MAX_REGISTER-(REG_VAR_BASE-max_reg_var))*size_of_int; | |
| 2006 freg_save = | |
| 2007 (REAL_MAX_FREGISTER-(FREG_VAR_BASE-max_freg_var))*size_of_float; | |
| 130 | 2008 |
| 2009 if (control) { | |
| 2010 code_set_return_register(1); | |
| 2011 } | |
| 2012 if (retcont) { | |
| 152 | 2013 /* return from CbC segement */ |
| 130 | 2014 if (control) jmp(retlabel); |
| 2015 retcont1 = fwdlabel(); | |
| 2016 fwddef(retcont); | |
| 152 | 2017 if (cadr(fnptr->ty)==FLOAT) { |
| 2018 if (freg!=RET_FREGISTER) | |
| 2019 printf("\tmov.s %s,%s\n",register_name(RET_FREGISTER), | |
| 2020 register_name(freg)); | |
| 2021 } else if (cadr(fnptr->ty)==DOUBLE) { | |
| 2022 move_dreg(RET_DREGISTER,dreg); | |
| 130 | 2023 } else if (cadr(fnptr->ty)>0&&( |
| 2024 car(cadr(fnptr->ty))==STRUCT || | |
| 2025 car(cadr(fnptr->ty))==UNION)) { | |
| 2026 sz = size(cadr(fnptr->ty)); | |
| 152 | 2027 printf("\tli $4,%d\n",sz); |
| 2028 printf("\tsubl $5,$4,$fp\n"); | |
| 2029 printf("\tlw $3,(%d)($fp)\n",(my_func_args-1)*size_of_int); | |
| 130 | 2030 emit_copy(6,3,sz,0,1,1); |
| 2031 } else if (cadr(fnptr->ty)!=VOID) { | |
| 152 | 2032 if (creg!=RET_REGISTER) |
| 2033 printf("\tmove $3,%s\n",register_name(creg)); | |
| 130 | 2034 } |
| 152 | 2035 printf("\tj L_%d\n",retcont1); |
| 130 | 2036 } |
| 2037 fwddef(retlabel); | |
| 2038 if (retcont) { | |
| 2039 fwddef(retcont1); | |
| 2040 } | |
| 2041 if (max_freg_var>=0) { | |
| 2042 } else { | |
| 2043 } | |
| 152 | 2044 fprintf(asi,"L_%d=%d\n",r1_offset_label,0); |
| 2045 fprintf(asi,"L_%d=%d\n",lvar_offset_label,0); | |
| 153 | 2046 fprintf(asi,"L_%d=0x%x\n",mask_label,code_mask_label()); |
| 152 | 2047 fprintf(asi,"L_%d=%d\n",mask1_label,0); |
| 153 | 2048 fprintf(asi,"L_%d=0x%x\n",fmask_label ,code_fmask_label()); |
| 152 | 2049 fprintf(asi,"L_%d=%d\n",fmask1_label,0); |
| 153 | 2050 fprintf(asi,"L_%d=%d\n",cprestore_label ,max_func_iargs); |
| 130 | 2051 |
| 2052 disp &= -size_of_int; | |
| 152 | 2053 r1_offsetv = 0; |
| 2054 | |
| 2055 printf("\tmove $sp,$fp\n"); | |
| 2056 printf("\tlw $31,%d($sp)\n",-disp); | |
| 2057 printf("\tlw $fp,%d($sp)\n",-disp-4); | |
| 2058 printf("\taddu $sp,$sp,%d\n",r1_offsetv); | |
| 2059 printf("\tj $31\n"); | |
| 2060 printf("\t.end print\n"); | |
| 2061 | |
| 2062 fprintf(asi,"L_%d=%d\n",disp_label,-r1_offsetv); | |
| 130 | 2063 |
| 2064 code_offset_set(); | |
| 2065 local_table(); | |
| 2066 labelno++; | |
| 2067 free_all_register(); | |
| 2068 } | |
| 2069 | |
| 2070 | |
| 2071 void | |
| 2072 code_set_return_register(int mode) { | |
| 148 | 2073 if (cadr(fnptr->ty)==DOUBLE) { |
| 2074 set_dreg(RET_DREGISTER,mode); | |
| 2075 } else if (cadr(fnptr->ty)==FLOAT) { | |
| 130 | 2076 set_freg(RET_FREGISTER,mode); |
| 148 | 2077 } else if (cadr(fnptr->ty)==VOID) { |
| 130 | 2078 } else { |
| 2079 set_creg(RET_REGISTER,mode); | |
| 2080 } | |
| 2081 } | |
| 2082 | |
| 189 | 2083 int |
| 2084 code_get_fixed_creg(int reg,int type) { | |
| 2085 return creg; | |
| 2086 } | |
| 2087 | |
| 130 | 2088 void |
| 189 | 2089 code_set_fixed_creg(int reg,int mode,int type) { |
| 148 | 2090 if (type==FLOAT) { |
| 189 | 2091 set_freg(reg,mode); |
| 148 | 2092 } else if (type==DOUBLE) { |
| 189 | 2093 set_dreg(reg,mode); |
| 130 | 2094 } else { |
| 189 | 2095 set_creg(reg,mode); |
| 130 | 2096 } |
| 2097 } | |
| 2098 | |
| 189 | 2099 |
| 130 | 2100 void |
| 2101 gen_gdecl(char *n, int gpc) | |
| 2102 { | |
| 2103 if (stmode!=STATIC) | |
| 153 | 2104 printf("\t.globl _%s\n",n); |
| 130 | 2105 } |
| 2106 | |
| 2107 void | |
| 2108 align(int t) | |
| 2109 { | |
| 2110 if (t!=CHAR) { | |
| 2111 if (data_alignment & 1) | |
| 2112 printf("\t.align 2\n"); | |
| 2113 data_alignment = 0; | |
| 2114 } | |
| 2115 } | |
| 2116 | |
| 2117 void | |
| 2118 emit_data(int e, int t, NMTBL *n) | |
| 2119 { | |
| 2120 int l; | |
| 195 | 2121 #if FLOAT_CODE |
| 130 | 2122 double d; |
| 2123 float f; | |
| 195 | 2124 #endif |
| 130 | 2125 char *name; |
| 2126 name = n->nm; | |
| 156 | 2127 if(mode!=GDECL&&mode!=STADECL) { |
| 130 | 2128 error(-1); return; |
| 2129 } | |
| 2130 if (chk) return; | |
| 2131 if (n->dsp != -1) { | |
| 2132 n->dsp = -1; /* initiallized flag */ | |
| 153 | 2133 /* printf(".globl\t_%s\n",name); */ |
| 130 | 2134 data_mode(name); |
| 2135 align(t); | |
| 2136 printf("_%s:\n",name); | |
| 2137 } else { | |
| 2138 data_mode(0); | |
| 2139 } | |
| 2140 if(car(e)==CONST) { | |
| 168 | 2141 if (t==CHAR||t==UCHAR) { |
| 130 | 2142 printf("\t.byte %d\n",cadr(e)); |
| 2143 if (data_alignment>0) | |
| 2144 data_alignment++; | |
| 2145 gpc += 1; | |
| 168 | 2146 } else if (t==SHORT||t==USHORT) { |
| 2147 printf("\t.short %d\n",cadr(e)); | |
| 130 | 2148 if (data_alignment>0) data_alignment++; |
| 2149 gpc += 2; | |
| 2150 } else { | |
| 148 | 2151 printf("\t.word %d\n",cadr(e)); |
| 130 | 2152 gpc += size_of_int; |
| 2153 } | |
| 195 | 2154 #if FLOAT_CODE |
| 130 | 2155 } else if(t==DOUBLE) { |
| 148 | 2156 d = dcadr(e); |
| 153 | 2157 printf("\t.word\t0x%x\n\t.word\t0x%x\n",code_d1(d),code_d2(d)); |
| 130 | 2158 } else if(t==FLOAT) { |
| 148 | 2159 f = dcadr(e); |
| 2160 printf("\t.word\t0x%x\n",*(int *)&f); | |
| 195 | 2161 #endif |
| 130 | 2162 } else if(t!=CHAR) { |
| 2163 gpc += size_of_int; | |
| 148 | 2164 if(car(e)==ADDRESS&&car(cadr(e))==GVAR) { |
| 2165 printf("\t.word _%s\n",((NMTBL *)cadr(cadr(e)))->nm); | |
| 2166 } else if(car(e)==FNAME) { | |
| 2167 printf("\t.word _%s\n",((NMTBL *)cadr(e))->nm); | |
| 2168 } else if(car(e)==GVAR) { | |
| 2169 printf("\t.word _%s\n",((NMTBL *)cadr(e))->nm); | |
| 2170 } else if(car(e)==STRING) { | |
| 2171 if (car(n->ty)!=ARRAY || cadr(n->ty)!=CHAR) { | |
| 2172 l = fwdlabel(); | |
| 2173 printf("\t.word L_%d\n",l); | |
| 2174 printf(".rdata\n\t.align 2\n"); | |
| 2175 printf("L_%d:\n",l); | |
| 2176 output_mode = RODATA_EMIT_MODE; | |
| 2177 } | |
| 2178 ascii((char *)cadr(e)); | |
| 130 | 2179 } else error(TYERR); |
| 168 | 2180 } else error(TYERR); |
| 130 | 2181 } |
| 2182 | |
| 2183 void | |
| 2184 emit_data_closing(NMTBL *n) | |
| 2185 { | |
| 2186 #ifdef DOT_SIZE | |
| 2187 int lb; | |
| 2188 #endif | |
| 2189 if (chk) return; | |
| 2190 if (mode==GDECL) { | |
| 2191 data_mode(0); | |
| 2192 #ifdef DOT_SIZE | |
| 2193 lb=fwdlabel(); | |
| 2194 printf("L_%d:\n",lb); | |
| 2195 printf("\t.size\t%s,L_%d-%s\n",n->nm,lb,n->nm); | |
| 2196 #endif | |
| 2197 } | |
| 2198 } | |
| 2199 | |
| 149 | 2200 void |
| 130 | 2201 global_table(void) |
| 2202 { | |
| 2203 NMTBL *n; | |
| 131 | 2204 int init; |
| 130 | 2205 init=0; |
| 2206 for(n=ntable;n < &ntable[GSYMS];n++) { | |
| 148 | 2207 if ((n->sc == GVAR) && n->dsp != -1) { |
| 2208 /* n->dsp = -1 means initialized global */ | |
| 2209 if (init==0) { | |
| 2210 data_mode(0); | |
| 2211 init=1; | |
| 2212 } | |
| 2213 printf(".comm _%s,%d\n",n->nm,size(n->ty)); | |
| 2214 } else if ((n->sc==STATIC) && n->dsp != -1) { | |
| 2215 /* n->dsp = -1 means initialized global */ | |
| 2216 if (init==0) { | |
| 2217 data_mode(0); | |
| 2218 init=1; | |
| 2219 } | |
| 2220 printf(".lcomm _%s,%d\n",n->nm,size(n->ty)); | |
| 2221 } | |
| 130 | 2222 } |
| 2223 } | |
| 2224 | |
| 2225 void | |
| 2226 local_table(void) | |
| 2227 { | |
| 2228 NMTBL *n; | |
| 2229 int init; | |
| 2230 init=0; | |
| 2231 /* static local variables */ | |
| 2232 for(n=ntable+GSYMS;n < &ntable[GSYMS+LSYMS];n++) { | |
| 2233 if (n->sc == GVAR) { | |
| 2234 if (init==0) { | |
| 2235 data_mode(0); | |
| 2236 init=1; | |
| 2237 } | |
| 156 | 2238 if (n->dsp!=-1) /* n->dsp = -1 means initialized global */ |
| 130 | 2239 printf(".lcomm _%s,%d\n",n->nm,size(n->ty)); |
| 2240 } | |
| 2241 } | |
| 2242 } | |
| 2243 | |
| 2244 void | |
| 2245 text_mode(void) | |
| 2246 { | |
| 2247 if (output_mode!=TEXT_EMIT_MODE) { | |
| 2248 printf(".text\n"); | |
| 2249 printf("\t.align 2\n"); | |
| 2250 output_mode = TEXT_EMIT_MODE; | |
| 2251 } | |
| 2252 } | |
| 2253 | |
| 2254 void | |
| 2255 data_mode(char *name) | |
| 2256 { | |
| 2257 if (output_mode!=DATA_EMIT_MODE) { | |
| 2258 printf(".data\n"); | |
| 2259 output_mode = DATA_EMIT_MODE; | |
| 2260 } | |
| 2261 if (name) | |
| 2262 printf("\t.type\t%s,@object\n",name); | |
| 2263 } | |
| 2264 | |
| 195 | 2265 #if FLOAT_CODE |
| 2266 | |
| 130 | 2267 char * |
| 2268 fstore(int d) | |
| 2269 { | |
| 148 | 2270 return (d?"stfd":"stfs"); |
| 130 | 2271 } |
| 2272 | |
| 2273 char * | |
| 2274 fload(int d) | |
| 2275 { | |
| 148 | 2276 return d?"lfd":"lfs"; |
| 130 | 2277 } |
| 2278 | |
| 153 | 2279 static |
| 2280 void code_dpfunc(char *f) | |
| 2281 { | |
| 2282 if (max_func_iargs<16) max_func_iargs=16; | |
| 2283 printf("\tjal %s\n",f); | |
| 2284 } | |
| 2285 | |
| 130 | 2286 void |
| 138 | 2287 code_cmp_dregister(int e2,int d) |
| 130 | 2288 { |
| 149 | 2289 char *frn,*grn; |
| 2290 int greg; | |
| 2291 | |
| 2292 if (d) { | |
| 2293 printf("\tli.d $6,%g\n",0.0); | |
| 2294 code_save_stacks(); | |
| 2295 move_dreg(4+DREG_OFFSET,freg); | |
| 153 | 2296 code_dpfunc("dpcmp"); |
| 2297 if (max_func_iargs<16) max_func_iargs=16; | |
| 149 | 2298 set_dreg(RET_DREGISTER,0); |
| 2299 return; | |
| 2300 } else { | |
| 2301 grn = register_name(greg = get_dregister(d)); | |
| 2302 frn = register_name(e2); | |
| 2303 printf("\tli.s %s,%g\n",grn,0.0); | |
| 2304 printf("\tc.eq.s %s,%s\n",grn,frn); | |
| 2305 free_register(greg); | |
| 2306 return; | |
| 2307 } | |
| 130 | 2308 } |
| 2309 | |
| 2310 void | |
| 138 | 2311 code_dregister(int e2,int freg,int d) |
| 130 | 2312 { |
| 141 | 2313 if (freg!=e2) { |
| 149 | 2314 if (d) { |
| 2315 if (!is_double_reg(e2)) error(-1); | |
| 2316 move_dreg(freg,e2); | |
| 2317 } else { | |
| 2318 if (!is_float_reg(e2)) error(-1); | |
| 2319 printf("\tfmr %s,%s\n",fregister_name(freg),fregister_name(e2)); | |
| 2320 } | |
| 141 | 2321 } |
| 148 | 2322 regv[freg]=1; |
| 130 | 2323 } |
| 2324 | |
| 2325 void code_dassign_gvar(int e2,int freg,int d) | |
| 2326 { | |
| 149 | 2327 NMTBL *n = (NMTBL*)cadr(e2); |
| 2328 if (d) { | |
| 2329 if (!is_double_reg(freg)) error(-1); | |
| 2330 printf("\tsw %s,0(%s)\n",dregister_name0(freg),n->nm); | |
| 2331 printf("\tsw %s,0(%s)\n",dregister_name1(freg),n->nm); | |
| 2332 } else { | |
| 2333 printf("\ts.s %s,0(%s)\n",fregister_name(freg),n->nm); | |
| 2334 } | |
| 148 | 2335 regv[freg]=1; |
| 130 | 2336 } |
| 2337 | |
| 2338 void code_dassign_lvar(int e2,int freg,int d) | |
| 2339 { | |
| 149 | 2340 if (d) { |
| 2341 if (!is_double_reg(freg)) error(-1); | |
| 2342 printf("\tsw %s,",dregister_name0(freg)); | |
| 2343 lvar(e2); | |
| 2344 printf("\tsw %s,",dregister_name1(freg)); | |
| 2345 e2 += size_of_double/2; | |
| 2346 } else { | |
| 2347 printf("\ts.s %s,",fregister_name(freg)); | |
| 2348 } | |
| 130 | 2349 lvar(e2); |
| 148 | 2350 regv[freg]=1; |
| 130 | 2351 } |
| 2352 | |
| 2353 void code_dassign(int e2,int freg,int d) | |
| 2354 { | |
| 149 | 2355 if (d) { |
| 2356 if (!is_double_reg(freg)) error(-1); | |
| 2357 printf("\tsw %s,0(%s)\n",dregister_name0(freg),register_name(e2)); | |
| 2358 printf("\tsw %s,4(%s)\n",dregister_name1(freg),register_name(e2)); | |
| 2359 } else { | |
| 2360 printf("\ts.s %s,0(%s)\n",fregister_name(freg),register_name(e2)); | |
| 2361 } | |
| 148 | 2362 regv[freg]=1; |
| 130 | 2363 } |
| 2364 | |
| 2365 void | |
| 138 | 2366 code_dassign_dregister(int e2,int d,int freg) { |
| 149 | 2367 /* これってさ、code_dregister と同じ? */ |
| 141 | 2368 if (e2!=freg) { |
| 149 | 2369 if (d) { |
| 2370 if (!is_double_reg(freg)) error(-1); | |
| 2371 move_dreg(freg,e2); | |
| 2372 } else { | |
| 2373 printf("\tmov.s %s,%s\n",fregister_name(e2),fregister_name(freg)); | |
| 2374 } | |
| 141 | 2375 } |
| 149 | 2376 |
| 130 | 2377 } |
| 2378 | |
|
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|
2379 static double d0 = 1.0; |
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2380 |
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2381 int |
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|
2382 code_d1(double d) |
|
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|
2383 { |
|
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|
2384 int *i = (int *)&d0; int *j = (int *)&d; |
|
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|
2385 return (i[1] == 0x3ff00000)?j[0]:j[1]; |
|
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|
2386 } |
|
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2387 |
|
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|
2388 int |
|
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|
2389 code_d2(double d) |
|
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|
2390 { |
|
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|
2391 int *i = (int *)&d0; int *j = (int *)&d; |
|
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|
2392 return (i[1] == 0x3ff00000)?j[1]:j[0]; |
|
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2393 } |
|
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2394 |
|
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2395 int |
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|
2396 code_f(double d) |
|
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|
2397 { |
|
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|
2398 float f = d; |
|
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2399 int *j = (int *)&f; |
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2400 return *j; |
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|
2401 } |
|
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|
2402 |
| 148 | 2403 void |
| 2404 code_dconst(int e2,int freg,int d) | |
| 130 | 2405 { |
| 138 | 2406 double value = dcadr(e2); |
| 149 | 2407 char *frn; |
| 2408 if (d) { | |
| 2409 printf("\tli.d %s,%g\n",dregister_name0(freg),value); | |
| 2410 } else { | |
| 2411 frn = fregister_name(freg); | |
| 2412 printf("\tli.s %s,%g\n",frn,value); | |
| 148 | 2413 } |
| 2414 regv[freg]=1; | |
| 130 | 2415 } |
| 2416 | |
|
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|
2417 |
| 138 | 2418 void code_dneg(int freg,int d) |
| 130 | 2419 { |
| 149 | 2420 char *frn; |
| 2421 if (d) { | |
| 2422 code_save_stacks(); | |
| 2423 move_dreg(4+DREG_OFFSET,freg); | |
| 153 | 2424 code_dpfunc("dpneg"); |
| 149 | 2425 set_dreg(RET_DREGISTER,0); |
| 2426 } else { | |
| 2427 frn = fregister_name(freg); | |
| 2428 printf("\tfneg %s,%s\n",frn,frn); | |
| 2429 } | |
| 130 | 2430 } |
| 2431 | |
| 148 | 2432 void code_d2i(int freg0) |
| 130 | 2433 { |
| 149 | 2434 code_save_stacks(); |
| 2435 set_dreg(RET_DREGISTER,1); | |
| 153 | 2436 code_dpfunc("dptoli"); |
| 149 | 2437 set_creg(RET_REGISTER,0); |
| 2438 regv[freg]=0; | |
| 148 | 2439 regv[creg]=1; |
| 130 | 2440 } |
| 2441 | |
| 148 | 2442 void code_i2d(int creg0) |
| 2443 { | |
| 141 | 2444 code_save_stacks(); |
| 148 | 2445 set_creg(RET_REGISTER,1); |
| 153 | 2446 code_dpfunc("litodp"); |
| 150 | 2447 set_dreg(RET_DREGISTER,0); |
| 148 | 2448 regv[freg]=1; |
| 149 | 2449 regv[creg]=0; |
| 141 | 2450 } |
|
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|
2451 |
| 148 | 2452 void code_d2u(int freg0) |
| 2453 { | |
| 141 | 2454 code_save_stacks(); |
| 149 | 2455 set_dreg(RET_DREGISTER,1); |
| 153 | 2456 code_dpfunc("dptoul"); |
| 148 | 2457 set_creg(RET_REGISTER,0); |
| 2458 regv[freg]=1; | |
| 141 | 2459 } |
| 2460 | |
| 148 | 2461 void code_u2d(int creg0) |
| 2462 { | |
| 2463 code_save_stacks(); | |
| 2464 set_creg(RET_REGISTER,1); | |
| 153 | 2465 code_dpfunc("ultodp"); |
| 149 | 2466 set_dreg(RET_DREGISTER,0); |
| 148 | 2467 regv[freg]=1; |
| 141 | 2468 } |
| 2469 | |
| 149 | 2470 void code_d2f(int freg) { |
| 2471 code_save_stacks(); | |
| 2472 set_dreg(RET_DREGISTER,1); | |
| 153 | 2473 code_dpfunc("dptofp"); |
| 149 | 2474 set_freg(RET_FREGISTER,0); |
| 2475 } | |
| 2476 | |
| 2477 void code_f2d(int freg) { | |
| 2478 code_save_stacks(); | |
| 2479 set_freg(RET_FREGISTER,1); | |
| 153 | 2480 code_dpfunc("fptodp"); |
| 149 | 2481 set_dreg(RET_DREGISTER,0); |
| 2482 } | |
| 2483 | |
| 2484 void code_f2i(int freg) { | |
| 2485 printf("\ttrunc.w.s %s,%s,%s\n",register_name(freg), | |
| 2486 register_name(freg),register_name(ireg)); | |
| 2487 creg = ireg; | |
| 2488 } | |
| 2489 | |
| 2490 void code_f2u(int freg) { | |
| 2491 printf("\ttrunc.w.s %s,%s,%s\n",register_name(freg), | |
| 2492 register_name(freg),register_name(ireg)); | |
| 2493 creg = ireg; | |
| 2494 } | |
| 2495 | |
| 2496 void code_i2f(int creg0) { | |
| 2497 printf("\tcvt.s.w %s,%s\n",register_name(freg),register_name(freg)); | |
| 2498 creg = freg; | |
| 2499 } | |
| 2500 | |
| 2501 void code_u2f(int creg0) { | |
| 2502 printf("\tcvt.s.w %s,%s\n",register_name(freg),register_name(freg)); | |
| 2503 creg = freg; | |
| 2504 } | |
|
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diff
changeset
|
2505 |
| 130 | 2506 void code_drgvar(int e2,int d,int freg) |
| 2507 { | |
| 151 | 2508 char *name = ((NMTBL*)cadr(e2))->nm; |
| 149 | 2509 if (d) { |
| 151 | 2510 printf("\tlw %s,%s\n",dregister_name0(freg),name); |
| 2511 printf("\tlw %s,%s\n",dregister_name1(freg),name); | |
| 149 | 2512 } else { |
| 151 | 2513 printf("\tl.s %s,%s\n",fregister_name(freg),name); |
| 149 | 2514 } |
| 148 | 2515 regv[freg]=1; |
| 130 | 2516 } |
| 2517 | |
| 2518 | |
| 2519 void code_drlvar(int e2,int d,int freg) | |
| 2520 { | |
| 149 | 2521 if (d) { |
| 152 | 2522 printf("\tlw %s,",dregister_name0(freg)); lvar(e2); |
| 2523 printf("\tlw %s,",dregister_name1(freg)); lvar(e2+size_of_double/2); | |
| 149 | 2524 } else { |
| 2525 printf("\tl.s %s,",fregister_name(freg)); lvar(e2); | |
| 2526 } | |
| 148 | 2527 regv[freg]=1; |
| 130 | 2528 } |
| 2529 | |
| 138 | 2530 void code_cmp_drgvar(int e2,int d) |
| 130 | 2531 { |
| 149 | 2532 char *frn; |
| 2533 int g; | |
| 2534 if (d) { | |
| 2535 code_save_stacks(); | |
| 2536 set_dreg(RET_DREGISTER,1); | |
| 2537 code_drgvar(e2,d,RET_DREGISTER+2); | |
| 153 | 2538 code_dpfunc("dcmp"); |
| 149 | 2539 regv[dreg]=0; |
| 2540 } else { | |
| 2541 frn=fregister_name(freg); | |
| 2542 g=get_dregister(d); | |
| 2543 code_drgvar(e2,d,g); | |
| 2544 printf("\tfc.eq.s %s,%s\n",frn,fregister_name(g)); | |
| 2545 free_register(g); | |
| 2546 regv[freg]=0; | |
| 2547 } | |
| 130 | 2548 } |
| 2549 | |
| 138 | 2550 void code_cmp_drlvar(int e2,int d) |
| 130 | 2551 { |
| 2552 char *frn=fregister_name(freg); | |
| 149 | 2553 int g; |
| 2554 if (d) { | |
| 2555 code_save_stacks(); | |
| 2556 set_dreg(RET_DREGISTER,1); | |
| 2557 code_drgvar(e2,d,RET_DREGISTER+2); | |
| 153 | 2558 code_dpfunc("dcmp"); |
| 149 | 2559 regv[dreg]=0; |
| 2560 } else { | |
| 2561 g=get_dregister(d); | |
| 2562 code_drlvar(e2,d,g); | |
| 2563 printf("\tc.eq.s %s,%s\n",frn,fregister_name(g)); | |
| 2564 free_register(g); | |
| 2565 regv[freg]=0; | |
| 2566 } | |
| 2567 } | |
| 130 | 2568 |
| 149 | 2569 static void |
| 2570 dtosop0(char *opn,int e1,int d,int cmp) | |
| 2571 { | |
| 2572 char *frn; | |
| 2573 char *grn; | |
| 2574 if (d) { | |
| 2575 code_save_stacks(); | |
| 2576 set_dreg(RET_DREGISTER,1); | |
| 2577 move_dreg(RET_DREGISTER+2,e1); | |
| 153 | 2578 code_dpfunc(opn); |
| 149 | 2579 } else { |
| 2580 frn=fregister_name(freg); | |
| 2581 grn=fregister_name(e1); | |
| 2582 if (cmp) { | |
| 2583 printf("\t%s %s,%s\n",opn,frn,grn); | |
| 2584 } else { | |
| 2585 printf("\t%s %s,%s,%s\n",opn,frn,frn,grn); | |
| 2586 } | |
| 2587 } | |
| 2588 free_register(e1); | |
| 141 | 2589 } |
| 2590 | |
| 149 | 2591 |
| 130 | 2592 void dtosop(int op,int e1) |
| 2593 { | |
| 148 | 2594 regv[freg]=1; |
| 130 | 2595 switch(op) { |
| 149 | 2596 case FADD: dtosop0("fadd",e1,0,0); return; |
| 2597 case DADD: dtosop0("dpadd",e1,1,0); return; | |
| 2598 case FSUB: dtosop0("fadd",e1,0,0); return; | |
| 2599 case DSUB: dtosop0("dpsub",e1,1,0); return; | |
| 2600 case FDIV: dtosop0("fadd",e1,0,0); return; | |
| 2601 case DDIV: dtosop0("dpdiv",e1,1,0); return; | |
| 2602 case FMUL: dtosop0("fadd",e1,0,0); return; | |
| 2603 case DMUL: dtosop0("dpmul",e1,1,0); return; | |
| 141 | 2604 case DCMPGE: |
| 149 | 2605 case DCMP: dtosop0("dpcmp",e1,1,1); return; |
| 2606 case FCMPGE: dtosop0("c.le.s",e1,0,1); return; | |
| 2607 case FCMP: dtosop0("c.eq.s",e1,0,1); return; | |
|
136
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133
diff
changeset
|
2608 default: |
| 149 | 2609 error(-1); return; |
| 130 | 2610 } |
| 2611 } | |
| 2612 | |
| 2613 void | |
| 2614 code_dassop(int op,int d) { | |
| 2615 /* we have lvalue in creg, applied floating value is in freg */ | |
| 149 | 2616 char *frn; |
| 2617 int xreg; | |
| 130 | 2618 char *crn=register_name(creg); |
| 2619 | |
| 149 | 2620 if (d) { |
| 2621 xreg=emit_dpop(d); | |
| 2622 printf("\tlw %s,0(%s)\n",dregister_name0(freg),crn); | |
| 2623 printf("\tlw %s,%d(%s)\n",dregister_name1(freg),size_of_int,crn); | |
| 2624 dtosop(op,xreg); | |
| 2625 printf("\tsw %s,0(%s)\n",dregister_name0(freg),crn); | |
| 2626 printf("\tsw %s,%d(%s)\n",dregister_name1(freg),size_of_int,crn); | |
| 2627 emit_dpop_free(xreg,d); | |
| 2628 creg = dreg; | |
| 2629 } else { | |
| 2630 xreg=emit_dpop(d); | |
| 2631 frn=fregister_name(freg); | |
| 2632 crn=register_name(creg); | |
| 2633 | |
| 2634 printf("\tl.s %s,0(%s)\n",frn,crn); | |
| 2635 dtosop(op,xreg); | |
| 2636 printf("\ts.s %s,0(%s)\n",frn,crn); | |
| 2637 emit_dpop_free(xreg,d); | |
| 2638 creg = freg; | |
| 2639 } | |
| 2640 regv[creg]=1; | |
| 130 | 2641 } |
| 2642 | |
| 2643 | |
| 2644 void | |
| 2645 code_dpreinc(int e1,int e2,int d,int reg) { | |
| 2646 char *frn; | |
| 2647 char *crn; | |
| 2648 int g; | |
| 149 | 2649 char *grn; |
| 130 | 2650 |
| 2651 g_expr(e2); | |
| 2652 | |
| 149 | 2653 if (d) { |
| 2654 crn=register_name(creg); | |
| 2655 frn=fregister_name(freg); | |
| 130 | 2656 |
| 149 | 2657 code_save_stacks(); |
| 2658 set_dreg(RET_DREGISTER,0); | |
| 2659 printf("\tlw $4,0(%s)\n",crn); | |
| 2660 printf("\tlw $5,%d(%s)\n",size_of_int,crn); | |
| 2661 printf("\tli.d $6,1.0\n"); | |
| 2662 if (caddr(e1)>0) | |
| 153 | 2663 code_dpfunc("dpadd"); |
| 149 | 2664 else |
| 153 | 2665 code_dpfunc("dpsub"); |
| 149 | 2666 printf("\tsw $2,0(%s)\n",crn); |
| 2667 printf("\tsw $3,%d(%s)\n",size_of_int,crn); | |
| 2668 creg = dreg; | |
| 2669 } else { | |
| 2670 crn=register_name(creg); | |
| 2671 frn=fregister_name(freg); | |
| 2672 grn=fregister_name(g=get_dregister(d)); | |
| 2673 | |
| 2674 printf("\tl.s %s,0(%s)\n",frn,crn); | |
| 2675 printf("\tli.s %s,1.0\n",grn); | |
| 2676 if (caddr(e1)>0) | |
| 2677 printf("\tfadd %s,%s,%s\n",frn,frn,grn); | |
| 2678 else | |
| 2679 printf("\tfsub %s,%s,%s\n",frn,frn,grn); | |
| 2680 printf("\ts.s %s,0(%s)\n",frn,crn); | |
| 2681 free_register(g); | |
| 2682 creg = freg; | |
| 2683 } | |
| 2684 regv[creg]=1; | |
| 130 | 2685 } |
| 2686 | |
| 2687 void | |
| 2688 code_dpostinc(int e1,int e2,int d,int reg) { | |
| 2689 char *frn; | |
| 2690 char *crn; | |
| 2691 int g; | |
| 149 | 2692 char *grn; |
| 130 | 2693 |
| 2694 g_expr(e2); | |
| 2695 | |
| 149 | 2696 if (d) { |
| 2697 crn=register_name(creg); | |
| 2698 g = get_dregister(d); | |
| 2699 set_dreg(RET_DREGISTER,0); | |
| 2700 printf("\tlw $4,0(%s)\n",crn); | |
| 2701 printf("\tlw $5,%d(%s)\n",size_of_int,crn); | |
| 2702 move_dreg(g,4+DREG_OFFSET); | |
| 2703 printf("\tli.d $6,1.0\n"); | |
| 2704 if (caddr(e1)>0) | |
| 153 | 2705 code_dpfunc("dpadd"); |
| 149 | 2706 else |
| 153 | 2707 code_dpfunc("dpsub"); |
| 149 | 2708 set_dreg(RET_DREGISTER,0); |
| 2709 printf("\tsw $2,0(%s)\n",crn); | |
| 2710 printf("\tsw $3,%d(%s)\n",size_of_int,crn); | |
| 152 | 2711 free_register(dreg); |
| 149 | 2712 set_dreg(g,0); |
| 2713 creg = g; | |
| 2714 } else { | |
| 2715 crn=register_name(creg); | |
| 2716 frn=fregister_name(freg); | |
| 2717 grn=fregister_name(g=get_dregister(d)); | |
| 130 | 2718 |
| 149 | 2719 printf("\tl.s %s,0(%s)\n",frn,crn); |
| 2720 printf("\tli.s %s,1.0\n",grn); | |
| 2721 if (caddr(e1)>0) | |
| 2722 printf("\tfadd %s,%s,%s\n",frn,frn,grn); | |
| 2723 else | |
| 2724 printf("\tfsub %s,%s,%s\n",frn,frn,grn); | |
| 2725 printf("\ts.s %s,0(%s)\n",grn,crn); | |
| 2726 free_register(g); | |
| 2727 creg = freg; | |
| 2728 } | |
| 2729 regv[creg]=1; | |
| 2730 | |
| 130 | 2731 } |
| 2732 | |
| 2733 void | |
| 2734 drexpr(int e1, int e2,int l1, int op) | |
| 2735 { | |
| 149 | 2736 g_expr(list3(((op==FOP+EQ||op==FOP+NEQ)?DCMP:FCMPGE),e1,e2)); |
| 130 | 2737 switch(op) { |
| 149 | 2738 case DOP+GE: |
| 2739 printf("\tbgez\tL_%d\n",l1); | |
| 2740 break; | |
| 2741 case DOP+GT: | |
| 2742 printf("\tbltz\tL_%d\n",l1); | |
| 2743 break; | |
| 2744 case DOP+EQ: | |
| 2745 printf("\tbeq\tL_%d\n",l1); | |
| 2746 break; | |
| 2747 case DOP+NEQ: | |
| 2748 printf("\tbne\tL_%d\n",l1); | |
| 2749 break; | |
| 2750 case FOP+GE: | |
| 2751 printf("\tbc1tl\tL_%d\n",l1); | |
| 2752 break; | |
| 2753 case FOP+GT: | |
| 2754 printf("\tbc1tl\tL_%d\n",l1); | |
| 2755 break; | |
| 2756 case FOP+EQ: | |
| 2757 printf("\tbc1f\tL_%d\n",l1); | |
| 2758 break; | |
| 2759 case FOP+NEQ: | |
| 2760 printf("\tbc1f\tL_%d\n",l1); | |
| 2761 break; | |
| 130 | 2762 } |
| 2763 } | |
| 2764 | |
| 138 | 2765 int emit_dpop(int d) |
| 130 | 2766 { |
| 2767 int xreg,reg; | |
| 151 | 2768 if (d) |
| 2769 xreg=pop_dregister(); | |
| 2770 else | |
| 2771 xreg=pop_fregister(); | |
| 130 | 2772 if (xreg<= -REG_LVAR_OFFSET) { |
| 138 | 2773 reg = get_dregister(d); |
| 149 | 2774 code_drlvar(REG_LVAR_OFFSET+xreg,d,reg); |
| 130 | 2775 free_lvar(REG_LVAR_OFFSET+xreg); |
| 148 | 2776 regv[reg]=1; xreg=reg; |
| 130 | 2777 } |
| 2778 return xreg; | |
| 2779 } | |
| 2780 | |
| 138 | 2781 void emit_dpop_free(int e1,int d) |
| 130 | 2782 { |
| 148 | 2783 free_register(e1); |
| 130 | 2784 } |
| 2785 | |
| 133 | 2786 void emit_dpush(int d) |
| 130 | 2787 { |
| 2788 int new_reg; | |
| 2789 if (freg_sp>MAX_MAX) error(-1); | |
| 149 | 2790 new_reg = get_dregister(d); |
| 151 | 2791 if (d) { |
| 2792 dreg_stack[dreg_sp++] = dreg; /* push するかわりにレジスタを使う */ | |
| 2793 creg = dreg = new_reg; | |
| 2794 regv[dreg]=1; | |
| 2795 } else { | |
| 2796 freg_stack[freg_sp++] = freg; /* push するかわりにレジスタを使う */ | |
| 2797 creg = freg = new_reg; | |
| 2798 regv[freg]=1; | |
| 2799 } | |
| 130 | 2800 } |
| 2801 | |
| 195 | 2802 #endif |
| 2803 | |
| 130 | 2804 void |
| 2805 code_save_stacks() | |
| 2806 { | |
| 2807 int i,reg; | |
| 2808 for(i=0;i<reg_sp;i++) { | |
| 2809 if ((reg=reg_stack[i])>=0) { | |
| 2810 code_assign_lvar( | |
| 2811 (reg_stack[i]=new_lvar(size_of_int)),reg,0); | |
| 2812 reg_stack[i]= reg_stack[i]-REG_LVAR_OFFSET; | |
| 2813 } | |
| 2814 } | |
| 195 | 2815 #if FLOAT_CODE |
| 149 | 2816 for(i=0;i<dreg_sp;i++) { |
| 2817 if ((reg=dreg_stack[i])>=0) { | |
| 2818 code_dassign_lvar( | |
| 2819 (dreg_stack[i]=new_lvar(size_of_double)),reg,1); | |
| 2820 dreg_stack[i]= dreg_stack[i]-REG_LVAR_OFFSET; | |
| 2821 } | |
| 2822 } | |
| 130 | 2823 for(i=0;i<freg_sp;i++) { |
| 2824 if ((reg=freg_stack[i])>=0) { | |
| 2825 code_dassign_lvar( | |
| 149 | 2826 (freg_stack[i]=new_lvar(size_of_float)),reg,0); |
| 130 | 2827 freg_stack[i]= freg_stack[i]-REG_LVAR_OFFSET; |
| 2828 } | |
| 2829 } | |
| 195 | 2830 #endif |
| 130 | 2831 } |
| 2832 | |
| 2833 void | |
| 2834 emit_lib(char *p[]) | |
| 2835 { | |
| 2836 while(*p) { | |
| 2837 printf("%s\n",*p++); | |
| 2838 } | |
| 2839 } | |
| 2840 | |
| 2841 void | |
| 2842 code_closing() | |
| 2843 { | |
| 2844 global_table(); | |
| 2845 /* printf("\t.ident \"Micro-C compiled\"\n"); */ | |
| 149 | 2846 fclose(asi); |
| 130 | 2847 } |
| 2848 | |
| 195 | 2849 |
| 2850 #if LONGLONG_CODE | |
| 2851 | |
| 2852 | |
| 2853 /* 64bit int part */ | |
| 2854 | |
| 2855 void lrexpr(int e1, int e2,int l1, int op) | |
| 2856 { | |
| 2857 } | |
| 2858 | |
| 2859 int lpop_register() | |
| 2860 { | |
| 2861 return 0; | |
| 2862 } | |
| 2863 | |
| 2864 int emit_lpop() | |
| 2865 { | |
| 2866 return 0; | |
| 2867 } | |
| 2868 | |
| 2869 void code_lregister(int e2,int reg) | |
| 2870 { | |
| 2871 | |
| 2872 } | |
| 2873 | |
| 2874 void code_cmp_lregister(int reg) | |
| 2875 { | |
| 2876 | |
| 2877 } | |
| 2878 | |
| 2879 void code_cmp_lrgvar(int e1,int e2) | |
| 2880 { | |
| 2881 | |
| 2882 } | |
| 2883 | |
| 2884 void code_cmp_lrlvar(int e1,int e2) | |
| 2885 { | |
| 2886 | |
| 2887 } | |
| 2888 | |
| 2889 void code_lassign(int e1,int e2) | |
| 2890 { | |
| 2891 | |
| 2892 } | |
| 2893 | |
| 2894 void code_lassign_gvar(int e1,int e2) | |
| 2895 { | |
| 2896 | |
| 2897 } | |
| 2898 | |
| 2899 void code_lassign_lvar(int e1,int e2) | |
| 2900 { | |
| 2901 | |
| 2902 } | |
| 2903 | |
| 2904 void code_lassign_lregister(int e2,int reg) | |
| 2905 { | |
| 2906 | |
| 2907 } | |
| 2908 | |
| 2909 void code_lconst(int e1,int e2) | |
| 2910 { | |
| 2911 | |
| 2912 } | |
| 2913 | |
| 2914 void code_lneg(int e1,int e2) | |
| 2915 { | |
| 2916 | |
| 2917 } | |
| 2918 | |
| 2919 void code_lrgvar(int e1,int e2) | |
| 2920 { | |
| 2921 | |
| 2922 } | |
| 2923 | |
| 2924 void code_lrlvar(int e1,int e2) | |
| 2925 { | |
| 2926 | |
| 2927 } | |
| 2928 | |
| 2929 void ltosop(int e1,int e2) | |
| 2930 { | |
| 2931 | |
| 2932 } | |
| 2933 | |
| 2934 void emit_lpop_free(int e1) | |
| 2935 { | |
| 2936 | |
| 2937 } | |
| 2938 | |
| 2939 void emit_lpush() | |
| 2940 { | |
| 2941 | |
| 2942 } | |
| 2943 | |
| 2944 void code_i2ll(int creg) | |
| 2945 { | |
| 2946 | |
| 2947 } | |
| 2948 | |
| 2949 void code_i2ull(int creg) | |
| 2950 { | |
| 2951 | |
| 2952 } | |
| 2953 | |
| 2954 void code_u2ll(int creg) | |
| 2955 { | |
| 2956 | |
| 2957 } | |
| 2958 | |
| 2959 void code_u2ull(int creg) | |
| 2960 { | |
| 2961 | |
| 2962 } | |
| 2963 | |
| 2964 void code_ll2i(int creg) | |
| 2965 { | |
| 2966 | |
| 2967 } | |
| 2968 | |
| 2969 void code_ll2u(int creg) | |
| 2970 { | |
| 2971 | |
| 2972 } | |
| 2973 | |
| 2974 void code_ull2i(int creg) | |
| 2975 { | |
| 2976 | |
| 2977 } | |
| 2978 | |
| 2979 void code_ull2u(int creg) | |
| 2980 { | |
| 2981 | |
| 2982 } | |
| 2983 | |
| 2984 #if FLOAT_CODE | |
| 2985 void code_d2ll(int creg) | |
| 2986 { | |
| 2987 | |
| 2988 } | |
| 2989 | |
| 2990 void code_d2ull(int creg) | |
| 2991 { | |
| 2992 | |
| 2993 } | |
| 2994 | |
| 2995 void code_f2ll(int creg) | |
| 2996 { | |
| 2997 | |
| 2998 } | |
| 2999 | |
| 3000 void code_f2ull(int creg) | |
| 3001 { | |
| 3002 | |
| 3003 } | |
| 3004 | |
| 3005 void code_ll2d(int creg) | |
| 3006 { | |
| 3007 | |
| 3008 } | |
| 3009 | |
| 3010 void code_ll2f(int creg) | |
| 3011 { | |
| 3012 | |
| 3013 } | |
| 3014 | |
| 3015 void code_ull2d(int creg) | |
| 3016 { | |
| 3017 | |
| 3018 } | |
| 3019 | |
| 3020 void code_ull2f(int creg) | |
| 3021 { | |
| 3022 | |
| 3023 } | |
| 3024 | |
| 3025 void code_ull2ll(int creg) | |
| 3026 { | |
| 3027 | |
| 3028 } | |
| 3029 | |
| 3030 void code_ull2ull(int creg) | |
| 3031 { | |
| 3032 | |
| 3033 } | |
| 3034 | |
| 3035 #endif | |
| 3036 | |
| 3037 | |
| 3038 void code_lpreinc(int e1,int e2,int reg) | |
| 3039 { | |
| 3040 | |
| 3041 } | |
| 3042 | |
| 3043 void code_lpostinc(int e1,int e2,int reg) | |
| 3044 { | |
| 3045 | |
| 3046 } | |
| 3047 | |
| 3048 void code_lassop(int op) | |
| 3049 { | |
| 3050 | |
| 3051 } | |
| 3052 | |
| 3053 | |
| 3054 #endif | |
| 3055 | |
| 130 | 3056 /* end */ |
| 3057 |