Mercurial > hg > CbC > old > device
annotate mc-code-mips.c @ 227:ed92cef127f1
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| author | kono |
|---|---|
| date | Tue, 27 Apr 2004 18:32:28 +0900 |
| parents | 6190d24e178c |
| children | 0dcc0ec81ed2 |
| 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 |
| 205 | 104 static int powerpc_regs[REAL_MAX_REGISTER+REAL_MAX_FREGISTER+REAL_MAX_DREGISTER]; |
| 105 | |
| 106 static int dreg_pair0[REAL_MAX_DREGISTER] = { | |
| 148 | 107 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 |
| 108 }; | |
| 205 | 109 static int dreg_pair1[REAL_MAX_DREGISTER] = { |
| 148 | 110 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 |
| 111 }; | |
| 130 | 112 |
| 205 | 113 static int *regs = powerpc_regs; |
| 130 | 114 |
| 115 static int max_reg_var, max_freg_var; | |
| 116 | |
| 117 static char *reg_name[] = { | |
| 131 | 118 "$0","$1","$2","$3","$4","$5","$6","$7","$8","$9", |
| 119 "$10","$11","$12","$13","$14","$15","$16","$17","$18","$19", | |
| 120 "$20","$21","$22","$23","$24","$25","$26","$27","$28","$29", | |
| 148 | 121 "$30","$31", |
| 131 | 122 "$f0","$f1","$f2","$f3","$f4","$f5","$f6","$f7","$f8","$f9", |
| 123 "$f10","$f11","$f12","$f13","$f14","$f15","$f16","$f17","$f18","$f19", | |
| 124 "$f20","$f21","$f22","$f23","$f24","$f25","$f26","$f27","$f28","$f29", | |
| 125 "$f30","$f31" | |
| 130 | 126 }; |
| 127 | |
| 148 | 128 |
| 129 #define register_name(i) reg_name0(i) | |
| 130 #define fregister_name(i) reg_name0(i) | |
| 149 | 131 #define dregister_name0(i) reg_name1(i,dreg_pair0) |
| 132 #define dregister_name1(i) reg_name1(i,dreg_pair1) | |
| 148 | 133 |
| 149 | 134 static char * |
| 148 | 135 reg_name0(int i) |
| 136 { | |
| 137 if (i<=REAL_MAX_REGISTER+REAL_MAX_FREGISTER) | |
| 138 return reg_name[i]; | |
| 149 | 139 else { |
| 148 | 140 error(-1); |
| 149 | 141 return reg_name[0]; |
| 142 } | |
| 148 | 143 } |
| 144 | |
| 149 | 145 static char * |
| 151 | 146 reg_name1(int i,int *d) |
| 149 | 147 { |
| 148 if (i<=REAL_MAX_REGISTER+REAL_MAX_FREGISTER) { | |
| 149 error(-1); | |
| 150 return reg_name[0]; | |
| 151 } else | |
| 152 return reg_name[d[i-DREG_OFFSET]]; | |
| 153 } | |
| 154 | |
| 155 | |
| 148 | 156 #define is_int_reg(i) (0<=i&&i<REAL_MAX_REGISTER) |
| 157 #define is_float_reg(i) (REAL_MAX_REGISTER<=i&&i<REAL_MAX_FREGISTER+REAL_MAX_REGISTER) | |
| 149 | 158 #define is_double_reg(i) (REAL_MAX_REGISTER+REAL_MAX_FREGISTER<=i&&i<REAL_MAX_FREGISTER+REAL_MAX_REGISTER+REAL_MAX_DREGISTER) |
| 148 | 159 |
| 130 | 160 |
| 148 | 161 int use_int(int i) { |
| 162 if (!is_int_reg(i)) i = ireg; | |
| 163 if (!regs[i]) regs[i]=1; | |
| 164 return i; | |
| 165 } | |
| 166 | |
| 167 int use_float(int i) { | |
| 168 if (!is_float_reg(i)) i = freg; | |
| 169 if (!regs[i]) regs[i]=1; | |
| 170 return i; | |
| 171 } | |
| 172 | |
| 173 int use_double(int i) { | |
| 174 if (!is_double_reg(i)) i = dreg; | |
| 175 if (!regs[i]) regs[i]=1; | |
| 176 return i; | |
| 177 } | |
| 130 | 178 |
| 195 | 179 int use_longlong(int i) { |
| 180 return i; | |
| 181 } | |
| 182 | |
| 183 #if FLOAT_CODE | |
| 149 | 184 static int code_d1(double d); |
| 185 static int code_d2(double d); | |
| 195 | 186 #endif |
| 149 | 187 |
| 130 | 188 static void code_save_stacks(); |
| 189 static void code_save_input_registers(); | |
| 190 static void set_creg(int,int); | |
| 191 static void set_freg(int,int); | |
| 148 | 192 static void set_dreg(int,int); |
| 130 | 193 |
|
136
069960078249
remove redundant funcall argument for prototyped code in PowerPC case.
kono
parents:
133
diff
changeset
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194 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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195 static int mask1_label; |
|
069960078249
remove redundant funcall argument for prototyped code in PowerPC case.
kono
parents:
133
diff
changeset
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196 static int fmask_label; |
|
069960078249
remove redundant funcall argument for prototyped code in PowerPC case.
kono
parents:
133
diff
changeset
|
197 static int fmask1_label; |
|
069960078249
remove redundant funcall argument for prototyped code in PowerPC case.
kono
parents:
133
diff
changeset
|
198 |
| 131 | 199 static FILE *asi; |
| 148 | 200 |
| 153 | 201 static int max_func_args; |
| 202 static int max_func_iargs; | |
| 203 static int my_func_args; | |
| 130 | 204 #define ARG_LVAR_OFFSET 0x10000000 |
| 205 | |
| 131 | 206 #define DOT_SIZE 1 |
| 207 | |
| 130 | 208 /* |
| 209 | |
| 152 | 210 Reorder is automatically done in assembler. |
| 211 delayed slot done within .set noreorder. | |
| 212 | |
| 130 | 213 r0 return value etc. |
| 152 | 214 $2,$3 return value. (dpcmp return value on $2) |
| 215 $0 special register | |
| 216 $4-$7 input register | |
| 130 | 217 r22-r29 saved register variable (input register for code segement) |
| 152 | 218 $31 stack pointer |
| 219 $fp frame pointer | |
| 130 | 220 |
| 152 | 221 $f0 return value etc. |
| 222 $f14,$f12 input register | |
| 223 $f20-$f31 saved register variable | |
| 130 | 224 |
| 225 function call stack frame | |
| 226 <------r1_offset------------------------------> | |
| 227 <------------lvar_offset-------> | |
| 228 r+ +------------+---+---------------+----------+--------------+----+ - | |
| 229 callee arg xx register save local caller arg xx | |
| 230 reg_save disp max_func_args*size_of_int | |
| 231 lvar>0 lvar<0 lvar>0x1000 0000 | |
| 232 | |
| 233 code segment stack frame | |
| 234 | |
| 235 * gotoを呼び出した関数のr1 ! r1(goto前のr1) | |
| 236 # * r30 <---r1_offset---------> r1 | |
| 237 r+ +----------+--+----------+----------------+-----------+----------+----+ | |
| 238 cousin arg xx reg save !callee arg !code local caller arg xx | |
| 239 r20-r29 lvar>0 lvar<0 lvar>0x1000 000 | |
| 240 f20-f31 <-my_func_args--><--disp-----><-max_func_arg-> | |
| 241 *size_of_int *size_of_int | |
| 242 | |
| 243 */ | |
| 244 int arg_offset = 24; int arg_offset1 = 24; int disp_offset = -12; | |
| 245 #define func_disp_offset 60 | |
| 246 #define r1_offset func_disp_offset+12 | |
| 247 int code_disp_offset = 0; int jump_offset = 0; | |
| 248 #define CODE_LVAR l+code_disp_offset | |
| 249 #define CODE_CALLER_ARG (l-ARG_LVAR_OFFSET)+arg_offset1 | |
| 250 #define FUNC_LVAR l+disp_offset | |
| 251 #define CALLER_ARG (l-ARG_LVAR_OFFSET)+arg_offset1 | |
| 252 #define CALLEE_ARG l+arg_offset | |
| 253 | |
| 254 void | |
| 255 code_offset_set() | |
| 256 { | |
| 257 #if 0 | |
| 258 int l; | |
| 259 #endif | |
| 260 int lvar_offsetv = -disp+max_func_args*size_of_int+func_disp_offset; | |
| 261 int r1_offsetv = -disp+max_func_args*size_of_int-reg_save+r1_offset; | |
| 153 | 262 printf("L_%d = %d\n",lvar_offset_label,lvar_offsetv); |
| 263 printf("L_%d = %d\n",r1_offset_label,r1_offsetv); | |
| 130 | 264 #if 0 |
| 265 printf("# function %s\n",fnptr->nm); | |
| 266 l = ARG_LVAR_OFFSET; | |
| 267 printf("# offset call0\t%d\n",CALLER_ARG); | |
| 268 l = ARG_LVAR_OFFSET+max_func_args*size_of_int; | |
| 269 printf("# offset calln\t%d %d\n",CALLER_ARG,max_func_args*size_of_int); | |
| 270 l = disp; | |
| 271 printf("# offset lvarn\t%d %d\n",FUNC_LVAR+lvar_offsetv,disp); | |
| 272 l = 0; | |
| 273 printf("# offset lvar0\t%d\n",FUNC_LVAR+lvar_offsetv); | |
| 274 l = -reg_save; | |
| 275 printf("# offset regs\t%d\n",FUNC_LVAR+lvar_offsetv); | |
| 276 printf("# offset r1off\t%d\n",r1_offsetv); | |
| 277 l = 0; | |
| 278 printf("# offset carg0\t%d\n",CALLEE_ARG+r1_offsetv); | |
| 279 l = my_func_args; | |
| 280 printf("# offset cargn\t%d %d\n",CALLEE_ARG+r1_offsetv,my_func_args); | |
| 281 #endif | |
| 282 } | |
| 283 | |
| 284 static void | |
| 131 | 285 lvar(int l) |
| 130 | 286 { |
| 287 if (fnptr->sc==CODE) { | |
| 148 | 288 if (l>=ARG_LVAR_OFFSET) { /* caller's arguments */ |
| 289 printf("%d($fp)\n",CODE_CALLER_ARG); | |
| 290 } else | |
| 291 printf("%d($fp)\n",CODE_LVAR); | |
| 130 | 292 } else if (l<0) { /* local variable */ |
| 148 | 293 printf("%d+L_%d($fp)\n",FUNC_LVAR,lvar_offset_label); |
| 130 | 294 } else if (l>=ARG_LVAR_OFFSET) { /* caller's arguments */ |
| 148 | 295 printf("%d($fp)\n",CALLER_ARG); |
| 130 | 296 } else { /* callee's arguments */ |
| 148 | 297 printf("%d+L_%d($fp)\n",CALLEE_ARG,r1_offset_label); |
| 130 | 298 } |
| 299 } | |
| 300 | |
| 301 static void | |
| 131 | 302 lvar_address(int l,int creg) |
| 130 | 303 { |
| 304 if (fnptr->sc==CODE) { | |
| 148 | 305 if (l>=ARG_LVAR_OFFSET) { /* caller's arguments */ |
| 306 printf("\taddu\t%s,$fp,%d\n",register_name(creg),CODE_CALLER_ARG); | |
| 307 } else | |
| 308 printf("\taddu\t%s,$fp,%d\n",register_name(creg),CODE_LVAR); | |
| 130 | 309 } else if (l<0) { /* local variable */ |
| 148 | 310 printf("\taddu\t%s,$fp,%d+L_%d\n",register_name(creg),FUNC_LVAR,lvar_offset_label); |
| 130 | 311 } else if (l>=ARG_LVAR_OFFSET) { /* caller's arguments */ |
| 148 | 312 printf("\taddu\t%s,$fp,%d\n",register_name(creg),CALLER_ARG); |
| 130 | 313 } else { /* callee's arguments */ |
| 148 | 314 printf("\taddu\t%s,$fp,%d+L_%d\n",register_name(creg),CALLEE_ARG,r1_offset_label); |
| 130 | 315 } |
| 316 } | |
| 317 | |
| 318 void | |
| 319 code_lvar(int e2,int creg) { | |
| 131 | 320 lvar_address(e2,creg); |
| 130 | 321 } |
| 322 | |
| 323 void | |
| 324 code_init(void) | |
| 325 { | |
| 131 | 326 /* this is called once program call */ |
| 130 | 327 } |
| 328 | |
| 329 void | |
| 330 gexpr_code_init(void){ | |
| 331 } | |
| 332 | |
| 137 | 333 void |
| 148 | 334 code_gexpr(int e){ |
| 335 if (is_int_reg(creg) && creg!=ireg) error(-1); | |
| 336 } | |
| 337 | |
| 338 | |
| 339 void | |
| 137 | 340 code_arg_register(NMTBL *fnptr) |
| 341 { | |
| 342 int args = fnptr->dsp; | |
| 343 NMTBL *n; | |
| 344 int reg_var = 0; | |
| 345 int freg_var = 0; | |
| 346 int type; | |
| 347 int reg; | |
| 348 int is_code0 = is_code(fnptr); | |
| 130 | 349 |
| 137 | 350 while (args) { |
| 351 /* process in reverse order */ | |
| 352 n = (NMTBL*)caddr(args); | |
| 353 type = n->ty; | |
| 354 if (scalar(type)) { | |
| 355 if ((reg = get_input_register_var(reg_var,n,is_code0))) { | |
| 356 n->sc = REGISTER; | |
| 357 n->dsp = cadr(reg); | |
| 358 regs[n->dsp]= INPUT_REG; | |
| 359 reg_var++; | |
| 360 cadddr(args)=size_of_int; /* why we need this? */ | |
| 361 } | |
| 362 } else if (type==FLOAT) { | |
| 138 | 363 if ((reg = get_input_dregister_var(freg_var,n,is_code0,0))) { |
| 141 | 364 n->sc = FREGISTER; |
| 137 | 365 n->dsp = cadr(reg); |
| 148 | 366 regs[n->dsp]= INPUT_REG; |
| 367 freg_var++; | |
| 137 | 368 cadddr(args)=size(type); /* why we need this? */ |
| 369 } | |
| 370 } else if (type==DOUBLE) { | |
| 141 | 371 if ((reg = get_input_dregister_var(reg_var,n,is_code0,1))) { |
| 137 | 372 n->sc = DREGISTER; |
| 373 n->dsp = cadr(reg); | |
| 148 | 374 regs[n->dsp]= INPUT_REG; |
| 141 | 375 reg_var+=2; |
| 137 | 376 cadddr(args)=size(type); /* why we need this? */ |
| 377 } | |
| 378 } | |
| 379 args = cadr(args); | |
| 380 } | |
| 130 | 381 if (is_function(fnptr)) |
| 148 | 382 code_save_input_registers(); |
| 130 | 383 } |
| 384 | |
| 385 int | |
| 386 get_register(void) | |
| 387 { /* 使われていないレジスタを調べる */ | |
| 388 int i,reg; | |
| 389 for(i=MAX_TMP_REG;i>MIN_TMP_REG;i--) { | |
| 390 if (regs[i]) continue; /* 使われている */ | |
| 391 regs[i]=USING_REG; /* そのレジスタを使うことを宣言し */ | |
| 392 return i; /* その場所を表す番号を返す */ | |
| 393 } | |
| 394 /* search register stack */ | |
| 395 for(i=0;i<reg_sp;i++) { | |
| 396 if ((reg=reg_stack[i])>=0) { | |
| 397 code_assign_lvar( | |
| 398 (reg_stack[i]=new_lvar(size_of_int)),reg,0); | |
| 399 reg_stack[i]= reg_stack[i]-REG_LVAR_OFFSET; | |
| 400 return reg; | |
| 401 } | |
| 402 } | |
| 195 | 403 #if FLOAT_CODE |
| 148 | 404 /* search dregister stack */ |
| 405 for(i=0;i<dreg_sp;i++) { | |
| 406 if ((reg=dreg_stack[i])>=0) { | |
| 407 code_dassign_lvar( | |
| 408 (dreg_stack[i]=new_lvar(size_of_double)),reg,1); | |
| 409 dreg_stack[i]= dreg_stack[i]-REG_LVAR_OFFSET; | |
| 149 | 410 free_register(reg); |
| 148 | 411 return get_register(); /* 今度は必ずある */ |
| 412 } | |
| 413 } | |
| 195 | 414 #endif |
| 131 | 415 for(i=0;i<REG_VAR_BASE-REG_VAR_MIN;i++) { |
| 416 reg =REG_VAR_BASE-i; | |
| 417 if (! regs[reg]) { /* 使われていないなら */ | |
| 418 regs[reg]=USING_REG; /* そのレジスタを使うことを宣言し */ | |
| 419 if (i>max_reg_var) max_reg_var=i; | |
| 420 return reg; | |
| 421 } | |
| 422 } | |
| 130 | 423 /* 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 | 424 error(HPERR); return creg; |
| 130 | 425 } |
| 426 | |
| 427 int | |
| 428 pop_register(void) | |
| 429 { /* レジスタから値を取り出す */ | |
| 430 return reg_stack[--reg_sp]; | |
| 431 } | |
| 432 | |
| 195 | 433 #if FLOAT_CODE |
| 434 | |
| 148 | 435 static int |
| 436 get_dregister1() { | |
| 149 | 437 int i; |
| 151 | 438 for(i=MAX_TMP_DREG+DREG_OFFSET;i>MIN_TMP_DREG+DREG_OFFSET;i--) { |
| 148 | 439 if (regs[i]) continue; /* 使われている */ |
| 440 if (regs[dreg_pair0[i-DREG_OFFSET]]) continue; | |
| 441 if (regs[dreg_pair1[i-DREG_OFFSET]]) continue; | |
| 442 regs[dreg_pair0[i-DREG_OFFSET]]=USING_REG; | |
| 443 regs[dreg_pair1[i-DREG_OFFSET]]=USING_REG; | |
| 444 regs[i]=USING_REG; /* そのレジスタを使うことを宣言し */ | |
| 445 return i; /* その場所を表す番号を返す */ | |
| 446 } | |
| 447 return -1; | |
| 448 } | |
| 449 | |
| 450 static int | |
| 451 get_dregister0() | |
| 452 { | |
| 149 | 453 int reg,i; |
| 148 | 454 /* とりあえず、空き int register pair を探す */ |
| 455 if ((i=get_dregister1())!=-1) { | |
| 456 return i; | |
| 457 } | |
| 458 /* search dregister stack */ | |
| 459 for(i=0;i<dreg_sp;i++) { | |
| 460 if ((reg=dreg_stack[i])>=0) { | |
| 461 code_dassign_lvar( | |
| 462 (dreg_stack[i]=new_lvar(size_of_double)),reg,1); | |
| 463 dreg_stack[i]= dreg_stack[i]-REG_LVAR_OFFSET; | |
| 152 | 464 return reg; |
| 148 | 465 } |
| 466 } | |
| 467 /* clear integer register stack */ | |
| 468 for(i=0;i<reg_sp;i++) { | |
| 469 if ((reg=reg_stack[i])>=0) { | |
| 470 code_assign_lvar( | |
| 471 (reg_stack[i]=new_lvar(size_of_int)),reg,0); | |
| 472 reg_stack[i]= reg_stack[i]-REG_LVAR_OFFSET; | |
| 473 free_register(reg); | |
| 474 } | |
| 475 } | |
| 476 if ((i=get_dregister1())!=-1) { | |
| 477 return i; | |
| 478 } | |
| 479 | |
| 480 error(REG_ERR); return dreg; | |
| 481 } | |
| 482 | |
| 483 static int | |
| 484 get_fregister0() | |
| 130 | 485 { /* 使われていないレジスタを調べる */ |
| 148 | 486 int i,reg; |
| 487 for(i=MAX_TMP_FREG+FREG_OFFSET;i>MIN_TMP_FREG+FREG_OFFSET;i--) { | |
| 488 if (regs[i]) continue; /* 使われている */ | |
| 489 regs[i]=USING_REG; /* そのレジスタを使うことを宣言し */ | |
| 130 | 490 return i; /* その場所を表す番号を返す */ |
| 491 } | |
| 492 /* search register stack */ | |
| 493 for(i=0;i<freg_sp;i++) { | |
| 494 if ((reg=freg_stack[i])>=0) { | |
| 495 code_dassign_lvar( | |
| 153 | 496 (freg_stack[i]=new_lvar(size_of_float)),reg,0); |
| 130 | 497 freg_stack[i]= freg_stack[i]-REG_LVAR_OFFSET; |
| 498 return reg; | |
| 499 } | |
| 500 } | |
| 131 | 501 for(i=0;i<FREG_VAR_BASE-REG_VAR_MIN;i++) { |
| 148 | 502 reg =FREG_VAR_BASE-i+FREG_OFFSET; |
| 503 if (! regs[reg]) { /* 使われていないなら */ | |
| 504 regs[reg]=USING_REG; /* そのレジスタを使うことを宣言し */ | |
| 131 | 505 if (i>max_freg_var) max_freg_var=i; |
| 506 return reg; | |
| 507 } | |
| 508 } | |
| 130 | 509 /* 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?) */ |
| 510 error(REG_ERR); return freg; | |
| 511 } | |
| 512 | |
| 148 | 513 int |
| 514 get_dregister(int d) | |
| 149 | 515 { |
| 148 | 516 if (d) { |
| 517 return get_dregister0(); | |
| 518 } else { | |
| 519 return get_fregister0(); | |
| 520 } | |
| 521 } | |
| 522 | |
| 130 | 523 int |
| 524 pop_fregister(void) | |
| 525 { /* レジスタから値を取り出す */ | |
| 526 return freg_stack[--freg_sp]; | |
| 527 } | |
| 528 | |
| 148 | 529 int |
| 530 pop_dregister(void) | |
| 531 { /* レジスタから値を取り出す */ | |
| 532 return dreg_stack[--dreg_sp]; | |
| 533 } | |
| 195 | 534 #endif |
| 535 | |
| 536 #if LONGLONG_CODE | |
| 537 int | |
| 205 | 538 get_lregister() { |
| 539 return -1; | |
| 540 } | |
| 541 | |
| 542 int | |
| 195 | 543 get_lregister_var(NMTBL *n) |
| 544 { | |
| 204 | 545 return list2(LVAR,new_lvar(size_of_double)); |
| 195 | 546 } |
| 547 #endif | |
| 548 | |
| 148 | 549 |
| 130 | 550 void |
| 551 emit_pop_free(int xreg) | |
| 552 { | |
| 553 if (xreg>=0) | |
| 554 free_register(xreg); | |
| 555 } | |
| 556 | |
| 557 void | |
| 558 free_register(int i) { /* いらなくなったレジスタを開放 */ | |
| 148 | 559 int i0,i1; |
| 560 if (i<0||MAX_FREGISTER+FREG_OFFSET+REAL_MAX_DREGISTER<i) error(-1); | |
| 561 if (is_double_reg(i)) { | |
| 562 i0 = dreg_pair0[i-DREG_OFFSET]; | |
| 205 | 563 regs[i0]=0; |
| 148 | 564 i1 = dreg_pair1[i-DREG_OFFSET]; |
| 205 | 565 regs[i1]=0; |
| 148 | 566 } |
| 205 | 567 regs[i]=0; |
| 130 | 568 } |
| 569 | |
| 570 int | |
| 138 | 571 get_input_dregister_var(int i,NMTBL *n,int is_code,int d) |
| 130 | 572 { |
| 148 | 573 if (d) { |
| 574 if (is_code) { | |
| 575 if(!(i<DREG_VAR_BASE-DREG_VAR_MIN)) return 0; | |
| 576 i = DREG_VAR_BASE-i+DREG_OFFSET; | |
| 141 | 577 } else { |
| 148 | 578 if (i<0||i>=MAX_INPUT_DREGISTER_VAR) return 0; |
| 579 i = i+MIN_TMP_DREG+DREG_OFFSET; | |
| 141 | 580 } |
| 148 | 581 return list3(DREGISTER,i,(int)n); |
| 141 | 582 } else { |
| 148 | 583 if (is_code) { |
| 584 if(!(i<FREG_VAR_BASE-FREG_VAR_MIN)) return 0; | |
| 585 i = FREG_VAR_BASE-i+FREG_OFFSET; | |
| 141 | 586 } else { |
| 148 | 587 if (i<0||i>=MAX_INPUT_FREGISTER_VAR) return 0; |
| 588 i = i+MIN_TMP_FREG+FREG_OFFSET; | |
| 141 | 589 } |
| 148 | 590 return list3(FREGISTER,i,(int)n); |
| 141 | 591 } |
| 130 | 592 } |
| 593 | |
| 594 int | |
| 595 get_input_register_var(int i,NMTBL *n,int is_code) | |
| 596 { | |
| 597 if (is_code) { | |
| 131 | 598 if(!(i<REG_VAR_BASE-REG_VAR_MIN)) return 0; |
| 130 | 599 i = REG_VAR_BASE-i; |
| 600 } else { | |
| 148 | 601 if (i<0||i>=MAX_INPUT_REGISTER_VAR) return 0; |
| 602 i = i+MIN_TMP_REG; | |
| 603 } | |
| 604 return list3(REGISTER,i,(int)n); | |
| 605 } | |
| 606 | |
| 607 /* double register case? */ | |
| 608 | |
| 609 int | |
| 610 get_input_register_var_1(int i,NMTBL *n,int is_code) | |
| 611 { | |
| 612 if (is_code) { | |
| 613 if(!(i<REG_VAR_BASE-REG_VAR_MIN)) return 0; | |
| 614 i = REG_VAR_BASE-i; | |
| 615 } else { | |
| 616 if (i<0||i>=MAX_INPUT_REGISTER_VAR+1) return 0; | |
| 130 | 617 i = i+MIN_TMP_REG; |
| 618 } | |
| 619 return list3(REGISTER,i,(int)n); | |
| 620 } | |
| 621 | |
| 622 int | |
| 137 | 623 free_register_count(int d) |
| 130 | 624 { |
| 625 int i,count,fcount; | |
| 626 fcount = count = 0; | |
| 627 for(i=0;i<MAX_REGISTER;i++) { | |
| 205 | 628 if (! regs[i]) count++; |
| 130 | 629 } |
| 630 for(i=0;i<MAX_FREGISTER;i++) { | |
| 205 | 631 if (! regs[i+FREG_OFFSET]) fcount++; |
| 130 | 632 } |
| 148 | 633 printf("# free reg %d freg %d\n",count,fcount); |
| 137 | 634 return d?fcount:count; |
| 130 | 635 } |
| 636 | |
| 637 int | |
| 638 register_full(void) | |
| 639 { | |
| 640 int i; | |
| 641 for(i=0;i<MAX_REGISTER;i++) { | |
| 642 if (! regs[i]) { | |
| 643 return 0; | |
| 644 } | |
| 645 } | |
| 646 return 1; | |
| 647 } | |
| 648 | |
| 649 void | |
| 650 free_all_register(void) | |
| 651 { | |
| 652 int i; | |
| 205 | 653 for(i=0;i<MAX_REGISTER;i++) { regs[i]=0; } |
| 654 for(i=0;i<MAX_FREGISTER;i++) { regs[i+FREG_OFFSET]=0; } | |
| 655 for(i=0;i<MAX_DREGISTER;i++) { regs[i+DREG_OFFSET]=0; } | |
| 130 | 656 creg = get_register(); |
| 195 | 657 #if FLOAT_CODE |
| 138 | 658 freg = get_dregister(0); |
| 150 | 659 dreg = DREG_DREGISTER; |
| 195 | 660 #endif |
| 130 | 661 set_creg(CREG_REGISTER,0); |
| 662 set_freg(FREG_FREGISTER,0); | |
| 148 | 663 set_dreg(DREG_DREGISTER,0); |
| 130 | 664 return; |
| 665 } | |
| 666 | |
| 667 void | |
| 668 register_usage(char *s) | |
| 669 { | |
| 670 #if 0 | |
| 671 int i; | |
| 672 #endif | |
| 673 if (chk) return; | |
| 674 if (!lsrc) return; | |
| 675 printf("# %d: %s:",lineno,s); | |
| 150 | 676 printf(" creg=%s ireg=%s freg=%s dreg=%s", |
| 677 is_int_reg(creg)?register_name(creg): | |
| 678 is_float_reg(creg)?fregister_name(creg): | |
| 679 is_double_reg(creg)?dregister_name0(creg):"bad", | |
| 680 register_name(ireg),fregister_name(freg),dregister_name0(dreg)); | |
| 130 | 681 #if 0 |
| 682 printf("\n# regs:"); | |
| 683 printf(":"); | |
| 684 for(i=0;i<MAX_REGISTER;i++) { printf("%d",regs[i]); } | |
| 685 printf("\n# freg:"); | |
| 148 | 686 for(i=0;i<MAX_FREGISTER;i++) { printf("%d",regs[i+FREG_OFFSET]); } |
| 130 | 687 for(i=reg_sp;i>=0;i--) { |
| 688 if(reg_stack[i]>=0) | |
| 148 | 689 printf(" %s",register_name(reg_stack[i])); |
| 130 | 690 } |
| 691 #endif | |
| 692 printf("\n"); | |
| 693 } | |
| 694 | |
| 695 void | |
| 696 gexpr_init(void) | |
| 697 { | |
| 698 while(reg_sp > 0) { | |
| 699 free_register(reg_stack[--reg_sp]); | |
| 700 } | |
| 148 | 701 while(freg_sp > 0) { |
| 702 free_register(freg_stack[--freg_sp]); | |
| 703 } | |
| 704 while(dreg_sp > 0) { | |
| 705 free_register(dreg_stack[--dreg_sp]); | |
| 706 } | |
| 707 cmpreg = -1; | |
| 130 | 708 text_mode(); |
| 709 gexpr_code_init(); | |
| 710 register_usage("gexpr_init"); | |
| 711 } | |
| 712 | |
| 713 | |
| 714 void | |
| 715 emit_init(void) | |
| 716 { | |
| 717 free_all_register(); | |
| 718 max_reg_var=-1; max_freg_var=-1; | |
| 719 reg_sp = 0; | |
| 720 freg_sp = 0; | |
| 148 | 721 dreg_sp = 0; |
| 130 | 722 text_mode(); |
| 723 } | |
| 724 | |
| 725 int | |
| 726 get_register_var(NMTBL *n) | |
| 727 { | |
| 728 int i; | |
| 729 for(i=0;i<REG_VAR_BASE-REG_VAR_MIN;i++) { | |
| 148 | 730 if (! regs[REG_VAR_BASE-i]) { /* 使われていないなら */ |
| 731 /* そのレジスタを使うことを宣言し */ | |
| 732 regs[REG_VAR_BASE-i]=USING_REG; | |
| 130 | 733 if (i>max_reg_var) max_reg_var=i; |
| 734 /* その場所を表す番号を返す */ | |
| 735 return list3(REGISTER,REG_VAR_BASE-i,(int)n); | |
| 148 | 736 } |
| 130 | 737 } |
| 738 return list2(LVAR,new_lvar(size_of_int)); | |
| 739 } | |
| 740 | |
| 741 int | |
| 742 fregister_var(int r) { | |
| 743 return r; | |
| 744 } | |
| 745 | |
| 746 int | |
| 138 | 747 get_dregister_var(NMTBL *n,int d) |
| 130 | 748 { |
| 148 | 749 int i,j; |
| 750 if (d) { | |
| 751 for(i=0;i<DREG_VAR_BASE-DREG_VAR_MIN;i++) { | |
| 149 | 752 if (! regs[j=(DREG_VAR_BASE-i+DREG_OFFSET)]) { /* 使われていないなら */ |
| 148 | 753 if (regs[dreg_pair0[j]] || regs[dreg_pair1[j]]) continue; |
| 754 regs[DREG_VAR_BASE-i+DREG_OFFSET]=USING_REG; /*そのレジスタを使うことを宣言し*/ | |
| 755 regs[dreg_pair0[j]] = regs[dreg_pair1[j]] = USING_REG; | |
| 149 | 756 if (dreg_pair1[j]>max_reg_var) max_reg_var=dreg_pair1[j]; |
| 148 | 757 /* その場所を表す番号を返す */ |
| 758 return list3(DREGISTER,DREG_VAR_BASE-i+DREG_OFFSET,(int)n); | |
| 759 } | |
| 760 } | |
| 761 return list2(LVAR,new_lvar(size_of_double)); | |
| 762 } else { | |
| 763 for(i=0;i<FREG_VAR_BASE-FREG_VAR_MIN;i++) { | |
| 764 if (! regs[FREG_VAR_BASE-i+FREG_OFFSET]) { /* 使われていないなら */ | |
| 765 regs[FREG_VAR_BASE-i+FREG_OFFSET]=USING_REG; /*そのレジスタを使うことを宣言し*/ | |
| 766 if (i>max_freg_var) max_freg_var=i; | |
| 767 /* その場所を表す番号を返す */ | |
| 768 return list3(FREGISTER,FREG_VAR_BASE-i+FREG_OFFSET,(int)n); | |
| 769 } | |
| 770 } | |
| 771 return list2(LVAR,new_lvar(size_of_float)); | |
| 130 | 772 } |
| 773 } | |
| 774 | |
| 775 void | |
| 776 emit_push() | |
| 777 { | |
| 778 int new_reg; | |
| 779 if (reg_sp>MAX_MAX) error(-1); | |
| 780 new_reg = get_register(); | |
| 781 reg_stack[reg_sp++] = creg; /* push するかわりにレジスタを使う */ | |
| 148 | 782 ireg = creg = new_reg; |
| 130 | 783 } |
| 784 | |
| 785 int | |
| 786 emit_pop(int type) | |
| 787 { | |
| 788 int xreg,reg; | |
| 789 xreg=pop_register(); | |
| 790 if (xreg<= -REG_LVAR_OFFSET) { | |
| 791 reg = get_register(); | |
| 792 code_rlvar(REG_LVAR_OFFSET+xreg,reg); | |
| 793 free_lvar(REG_LVAR_OFFSET+xreg); | |
| 794 xreg = reg; | |
| 795 } | |
| 796 return xreg; | |
| 797 } | |
| 798 | |
| 799 void | |
| 800 code_label(int labelno) | |
| 801 { | |
| 802 printf("L_%d:\n",labelno); | |
| 803 } | |
| 804 | |
| 805 void | |
| 806 code_gvar(int e1,int creg) { | |
|
136
069960078249
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parents:
133
diff
changeset
|
807 printf("\tla %s,%s\n",register_name(creg),((NMTBL*)cadr(e1))->nm); |
| 130 | 808 } |
| 809 | |
| 810 void | |
| 811 code_rgvar(int e1,int creg) { | |
|
136
069960078249
remove redundant funcall argument for prototyped code in PowerPC case.
kono
parents:
133
diff
changeset
|
812 printf("\tlw %s,%s\n",register_name(creg),((NMTBL*)cadr(e1))->nm); |
| 130 | 813 } |
| 167 | 814 char *cload(int sign,int sz) { return sz==1?(sign?"lbu":"lb"):(sz==size_of_short?(sign?"lhu":"lh"):"lw");} |
| 168 | 815 char *cstore(int sz) { return sz==1?"sb":(sz==size_of_short)?"sh":"sw";} |
| 130 | 816 void |
| 167 | 817 code_crgvar(int e1,int creg,int sign,int sz){ |
| 818 printf("\t%s %s,%s\n",cload(sign,sz),register_name(creg),((NMTBL*)cadr(e1))->nm); | |
| 130 | 819 } |
| 820 | |
| 821 | |
| 822 void | |
| 823 code_register(int e2,int creg) { | |
| 824 if (creg!=e2) | |
| 148 | 825 printf("\tmove %s,%s\n",register_name(creg),register_name(e2)); |
| 130 | 826 } |
| 827 | |
| 828 | |
| 829 void | |
| 830 code_rlvar(int e2,int reg) { | |
| 131 | 831 printf("\tlw %s,",register_name(reg)); |
| 130 | 832 lvar(e2); |
| 833 } | |
| 834 | |
| 835 | |
| 836 void | |
| 167 | 837 code_crlvar(int e2,int reg,int sign,int sz) { |
| 838 printf("\t%s %s,",cload(sign,sz),register_name(reg)); | |
| 130 | 839 lvar(e2); |
| 840 } | |
| 841 | |
| 842 | |
| 843 void | |
| 844 code_fname(NMTBL *n,int creg) { | |
|
136
069960078249
remove redundant funcall argument for prototyped code in PowerPC case.
kono
parents:
133
diff
changeset
|
845 printf("\tla %s,%s\n",register_name(creg),n->nm); |
| 130 | 846 } |
| 847 | |
| 848 | |
| 849 void | |
| 850 code_const(int e2,int creg) { | |
| 131 | 851 printf("\tli %s,%d\n",register_name(creg),e2); |
| 130 | 852 } |
| 853 | |
| 854 | |
| 855 void | |
| 856 code_neg(int creg) { | |
| 131 | 857 printf("\tsubu %s,$0,%s\n", register_name(creg), register_name(creg)); |
| 130 | 858 } |
| 859 | |
| 860 | |
| 861 void | |
| 862 code_not(int creg) { | |
| 863 printf("\tnor %s,%s,%s\n", | |
| 148 | 864 register_name(creg), register_name(creg),register_name(creg)); |
| 130 | 865 } |
| 866 | |
| 867 | |
| 868 void | |
| 869 code_lnot(int creg) { | |
| 131 | 870 /* if non zero 1 else 0 */ |
| 871 int dreg = get_register(); | |
| 872 printf("\txori %s,%s,0x0\n", | |
| 148 | 873 register_name(dreg),register_name(creg)); |
| 131 | 874 printf("\tsltu %s,%s,1\n", |
| 148 | 875 register_name(creg),register_name(dreg)); |
| 131 | 876 free_register(dreg); |
| 130 | 877 } |
| 878 | |
| 879 void | |
| 168 | 880 code_preinc(int e1,int e2,int dir,int sign,int sz,int reg) { |
| 130 | 881 char *xrn,*drn; |
| 882 int i,dreg; | |
| 883 if (car(e2)==REGISTER) { | |
| 148 | 884 printf("\taddu %s,%s,%d\n", |
| 168 | 885 register_name(cadr(e2)),register_name(cadr(e2)), dir); |
| 148 | 886 if (cadr(reg)!=e2) |
| 887 printf("\tmove %s,%s\n",register_name(cadr(reg)),register_name(e2)); | |
| 888 return; | |
| 130 | 889 } |
| 890 g_expr(e2); | |
| 891 xrn = register_name(creg); | |
| 892 dreg=get_register(); if (!dreg) error(-1); | |
| 893 drn = register_name(dreg); | |
| 168 | 894 printf("\t%s %s,0(%s)\n",cload(sign,sz),drn,xrn); |
| 895 printf("\taddu %s,%s,%d\n",drn,drn,dir); | |
| 896 printf("\t%s %s,0(%s)\n",cstore(sz),drn,xrn); | |
| 130 | 897 i=creg;creg=dreg;dreg=i; |
| 205 | 898 ireg=creg; |
| 130 | 899 free_register(dreg); |
| 900 } | |
| 901 | |
| 902 | |
| 903 void | |
| 168 | 904 code_postinc(int e1,int e2,int dir,int sign,int sz,int reg) { |
| 130 | 905 char *xrn,*crn,*nrn; |
| 906 int dreg,nreg,i; | |
| 907 if (car(e2)==REGISTER) { | |
| 148 | 908 printf("\tmove %s,%s\n",register_name(reg),register_name(cadr(e2))); |
| 909 printf("\taddu %s,%s,%d\n", | |
| 168 | 910 register_name(cadr(e2)),register_name(cadr(e2)),dir); |
| 148 | 911 return; |
| 130 | 912 } |
| 913 g_expr(e2); | |
| 914 crn = register_name(creg); | |
| 915 dreg=get_register(); if (!dreg) error(-1); | |
| 916 xrn = register_name(dreg); | |
| 917 nreg=get_register(); if (!nreg) error(-1); | |
| 918 nrn = register_name(nreg); | |
| 168 | 919 printf("\t%s %s,0(%s)\n",cload(sign,sz),xrn,crn); |
| 920 printf("\taddu %s,%s,%d\n",nrn,xrn,dir); | |
| 921 printf("\t%s %s,0(%s)\n",cstore(sz),nrn,crn); | |
| 922 i=creg;creg=dreg;dreg=i; | |
| 130 | 923 free_register(nreg); |
| 924 free_register(dreg); | |
| 205 | 925 ireg=creg; |
| 130 | 926 } |
| 927 | |
| 928 | |
| 929 | |
| 930 void | |
| 931 code_return(int creg) { | |
| 932 char *crn = register_name(creg); | |
| 131 | 933 printf("\tla %s,L_%d\n",crn,retcont); |
| 130 | 934 } |
| 935 | |
| 936 #define R1SAVE 1 | |
| 937 | |
| 938 void | |
| 939 code_environment(int creg) { | |
| 940 /* save frame pointer */ | |
| 941 #if R1SAVE | |
| 131 | 942 printf("\tlw %s,0($fp)\n",register_name(creg)); |
| 130 | 943 #else |
| 944 int l = 0; | |
| 131 | 945 printf("\taddu %s,",register_name(creg)); |
| 946 printf("$fp,%d+L_%d\n",FUNC_LVAR,lvar_offset_label); | |
| 130 | 947 #endif |
| 948 } | |
| 949 | |
| 950 void | |
| 951 code_bool(int e1) { | |
| 952 char *xrn; | |
| 953 int e2,e3; | |
| 954 b_expr(e1,1,e2=fwdlabel(),1); /* including > < ... */ | |
| 150 | 955 creg = use_int(creg); |
| 130 | 956 xrn = register_name(creg); |
| 957 printf("\tli %s,0\n",xrn); | |
| 958 jmp(e3=fwdlabel()); | |
| 959 fwddef(e2); | |
| 960 printf("\tli %s,1\n",xrn); | |
| 961 fwddef(e3); | |
| 962 } | |
| 963 | |
| 964 char * | |
| 965 code_gt(int cond) { | |
| 152 | 966 return (cond?"\tslt %s,%s,%s\n\tbeq %s,$0,L_%d\n": |
| 967 "\tslt %s,%s,%s\n\tbne %s,$0,L_%d\n"); | |
| 130 | 968 } |
| 969 | |
| 970 char * | |
| 971 code_ugt(int cond) { | |
| 152 | 972 return (cond?"\tsltu %s,%s,%s\n\tbeq %s,$0,L_%d\n": |
| 973 "\tsltu %s,%s,%s\n\tbne %s,$0,L_%d\n"); | |
| 130 | 974 } |
| 975 | |
| 976 char * | |
| 977 code_ge(int cond) { | |
| 152 | 978 return (cond?"\tslt %s,%s,%s\n\txori %s,%s,0x1\n\tbeq %s,$0,L_%d\n": |
| 979 "\tslt %s,%s,%s\n\txori %s,%s,0x1\n\tbne %s,$0,L_%d\n"); | |
| 130 | 980 } |
| 981 | |
| 982 char * | |
| 983 code_uge(int cond) { | |
| 152 | 984 return (cond?"\tsltu %s,%s,%s\n\txori %s,%s,0x1\n\tbeq %s,$0,L_%d\n": |
| 985 "\tsltu %s,%s,%s\n\txori %s,%s,0x1\n\tbne %s,$0,L_%d\n"); | |
| 130 | 986 } |
| 987 | |
| 988 char * | |
| 989 code_eq(int cond) { | |
| 152 | 990 return (cond?"\tbeq %s,%s,L_%d\n":"\tbne %s,%s,L_%d\n"); |
| 130 | 991 } |
| 992 | |
| 993 void | |
| 167 | 994 code_cmp_crgvar(int e1,int sz) { |
| 148 | 995 if (cmpreg==-1) cmpreg = get_register(); |
| 167 | 996 code_crgvar(cadr(e1),cmpreg,1,sz); |
| 130 | 997 } |
| 998 | |
| 999 | |
| 1000 void | |
| 167 | 1001 code_cmp_crlvar(int e2,int sz) { |
| 148 | 1002 if (cmpreg==-1) cmpreg = get_register(); |
| 167 | 1003 code_crlvar(e2,cmpreg,1,sz); |
| 130 | 1004 } |
| 1005 | |
| 1006 | |
| 1007 void | |
| 1008 code_cmp_rgvar(int e1) { | |
| 148 | 1009 if (cmpreg==-1) cmpreg = get_register(); |
| 1010 code_rgvar(e1,cmpreg); | |
| 130 | 1011 } |
| 1012 | |
| 1013 | |
| 1014 void | |
| 1015 code_cmp_rlvar(int e2) { | |
| 148 | 1016 if (cmpreg==-1) cmpreg = get_register(); |
| 149 | 1017 code_rlvar(e2,cmpreg); |
| 130 | 1018 } |
| 1019 | |
| 1020 | |
| 1021 void | |
| 1022 code_cmp_register(int e2) { | |
| 148 | 1023 cmpreg = e2; |
| 1024 /* prevent cmpreg freeing */ | |
| 130 | 1025 } |
| 1026 | |
| 1027 | |
| 1028 void | |
| 1029 ascii(char *s) | |
| 1030 { | |
| 1031 printf("\t.ascii \""); | |
| 1032 while(*s) { | |
| 1033 if (*s=='\n') | |
| 1034 printf("%cn",92); | |
| 1035 else if (*s<' ') | |
| 1036 printf("%c%03o",92,*s); | |
| 1037 else if (*s=='\\') | |
| 1038 printf("\\\\"); | |
| 1039 else if (*s==34) | |
| 1040 printf("%c%c",92,34); | |
| 1041 else | |
| 1042 printf("%c",*s); | |
| 1043 s++; | |
| 1044 } | |
| 148 | 1045 printf("\\0%c\n\t.align 2\n",34); |
| 130 | 1046 } |
| 1047 | |
| 1048 void | |
| 1049 code_string(int e1,int creg) | |
| 1050 { | |
| 1051 char *s,*crn; | |
| 1052 int lb; | |
| 1053 crn=register_name(creg); | |
| 1054 | |
| 1055 s=(char *)cadr(e1); | |
| 131 | 1056 printf("\t.rdata\n\t.align 2\n"); |
| 130 | 1057 lb=fwdlabel(); |
| 1058 printf("L_%d:\n",lb); | |
| 1059 ascii(s); | |
| 1060 if (output_mode==TEXT_EMIT_MODE) { | |
| 148 | 1061 printf(".text\n"); |
| 130 | 1062 } else { |
| 148 | 1063 text_mode(); |
| 130 | 1064 } |
| 131 | 1065 printf("\tla %s,L_%d\n",crn,lb); |
| 130 | 1066 } |
| 1067 | |
| 1068 #define MAX_COPY_LEN 20 | |
| 1069 | |
| 1070 void | |
| 1071 emit_copy(int from,int to,int length,int offset,int value,int det) | |
| 1072 { | |
| 1073 char *frn = register_name(from); | |
| 1074 char *trn = register_name(to); | |
| 1075 char *drn; | |
| 1076 int fix = 0; | |
| 1077 char *memmove = "memmove"; | |
| 1078 int dreg = get_register(); if (!dreg) error(-1); | |
| 1079 drn = register_name(dreg); | |
| 1080 | |
| 1081 /* length <0 means upward direction copy */ | |
| 1082 switch (length) { | |
| 148 | 1083 case 0: break; |
| 130 | 1084 case 1: case -1: |
| 148 | 1085 printf("\tlb %s,%d(%s)\n",drn,offset,frn); |
| 1086 printf("\tsb %s,%d(%s)\n",drn,offset,trn); | |
| 1087 break; | |
| 130 | 1088 case 2: case -2: |
| 148 | 1089 printf("\tlh %s,%d(%s)\n",drn,offset,frn); |
| 1090 printf("\tsh %s,%d(%s)\n",drn,offset,trn); | |
| 1091 break; | |
| 130 | 1092 case 4: case -4: |
| 148 | 1093 printf("\tlw %s,%d(%s)\n",drn,offset,frn); |
| 1094 printf("\tsw %s,%d(%s)\n",drn,offset,trn); | |
| 1095 break; | |
| 130 | 1096 default: |
| 148 | 1097 if (-MAX_COPY_LEN<length && length <0) { |
| 1098 for(;length<=4;length+=4,offset-=4) | |
| 1099 emit_copy(from,to,4,offset,0,det); | |
| 1100 for(;length<=2;length+=2,offset-=2) | |
| 1101 emit_copy(from,to,2,offset,0,det); | |
| 1102 if(length>0) | |
| 1103 emit_copy(from,to,length,offset,0,det); | |
| 1104 break; | |
| 1105 } else if (length <=MAX_COPY_LEN) { | |
| 1106 for(;length>=4;length-=4,offset+=4) | |
| 1107 emit_copy(from,to,4,offset,0,det); | |
| 1108 for(;length>=2;length-=2,offset+=2) | |
| 1109 emit_copy(from,to,2,offset,0,det); | |
| 1110 if(length>0) | |
| 1111 emit_copy(from,to,length,offset,0,det); | |
| 1112 break; | |
| 1113 } | |
| 1114 code_save_stacks(); | |
| 1115 printf("\tli $6,%d\n",length); | |
| 1116 printf("\tmr $5,%s\n",frn); | |
| 1117 printf("\tmr $4,%s\n",trn); | |
| 130 | 1118 /* overrap must be allowed */ |
| 148 | 1119 printf("\tbl L_%s$stub\n",memmove); |
| 130 | 1120 fix=0; |
| 148 | 1121 set_creg(RET_REGISTER,0); |
| 1122 if (creg!=to) { | |
| 1123 free_register(to); to = creg; | |
| 1124 } | |
| 1125 break; | |
| 130 | 1126 } |
| 149 | 1127 if (value) { |
| 130 | 1128 /* creg must point top of the destination data */ |
| 1129 /* this code is necessary for the value of assignment or function call */ | |
| 1130 /* otherwise we don't need this */ | |
| 148 | 1131 if (fix) printf("\taddi %s,%s,%d\n",trn,trn,fix); |
| 1132 if(creg!=to) { | |
| 1133 free_register(creg); creg=to; | |
| 1134 } | |
| 130 | 1135 } |
| 1136 free_register(dreg); | |
| 1137 } | |
| 1138 | |
| 1139 int | |
| 1140 struct_push(int e4,int t,int arg) | |
| 1141 { | |
| 1142 int length,count; | |
| 1143 int dreg,sreg; char *drn,*crn,*srn; | |
| 1144 g_expr(e4); | |
| 1145 length=size(t); | |
| 1146 if(length%size_of_int) { | |
| 1147 length += size_of_int - (length%size_of_int); | |
| 1148 } | |
| 1149 dreg = get_register(); if (!dreg) error(-1); | |
| 1150 drn = register_name(dreg); | |
| 1151 crn = register_name(creg); | |
| 1152 if (length<MAX_COPY_LEN) { | |
| 1153 sreg = get_register(); if (!sreg) error(-1); | |
| 1154 srn = register_name(sreg); | |
| 1155 code_lvar(cadr(arg),sreg); | |
| 1156 for(count=0;length<MAX_COPY_LEN;count++,length-=size_of_int) { | |
| 1157 if (length==0) { | |
| 1158 free_register(sreg); | |
| 1159 free_register(dreg); | |
| 1160 return count; | |
| 1161 } else { | |
| 148 | 1162 printf("\tlw %s,%d(%s)\n",drn,length-size_of_int,crn); |
| 1163 printf("\tsw %s,%d(%s)\n",drn,length-size_of_int,srn); | |
| 130 | 1164 } |
| 1165 } | |
| 1166 } | |
| 1167 code_lvar(cadr(arg),dreg); | |
| 1168 /* downward direction copy */ | |
| 1169 emit_copy(creg,dreg,length,0,0,1); | |
| 1170 if (dreg) free_register(dreg); | |
| 1171 return length/size_of_int; | |
| 1172 } | |
| 1173 | |
| 1174 void | |
| 1175 set_creg(int reg,int mode) | |
| 1176 { | |
| 148 | 1177 if (!is_int_reg(reg)) error(-1); |
| 130 | 1178 if (reg!=creg) { |
| 148 | 1179 if (reg!=ireg && mode) |
| 150 | 1180 printf("\tmove %s,%s\n",register_name(reg),register_name(ireg)); |
| 130 | 1181 free_register(creg); |
| 148 | 1182 creg = ireg = reg; |
| 130 | 1183 regs[creg]=1; |
| 1184 } | |
| 1185 } | |
| 1186 | |
| 1187 void | |
| 1188 set_freg(int reg,int mode) | |
| 1189 { | |
| 148 | 1190 if (!is_float_reg(reg)) error(-1); |
| 1191 if (reg!=creg) { | |
| 1192 if (reg!=freg && mode) { | |
| 1193 printf("\tfmove %s,%s\n",fregister_name(reg),fregister_name(freg)); | |
| 1194 } | |
| 1195 free_register(creg); | |
| 1196 creg = freg = reg; | |
| 1197 regs[freg]=1; | |
| 130 | 1198 } |
| 1199 } | |
| 1200 | |
| 149 | 1201 static void |
| 1202 move_dreg(int reg,int dreg) | |
| 1203 { | |
| 1204 if (reg!=dreg) { | |
| 1205 printf("\tmove %s,%s\n",dregister_name0(reg), | |
| 1206 dregister_name0(dreg)); | |
| 1207 printf("\tmove %s,%s\n",dregister_name1(reg), | |
| 1208 dregister_name1(dreg)); | |
| 1209 } | |
| 1210 } | |
| 1211 | |
| 130 | 1212 void |
| 148 | 1213 set_dreg(int reg,int mode) |
| 1214 { | |
| 1215 if (!is_double_reg(reg)) error(-1); | |
| 1216 if (reg!=creg) { | |
| 149 | 1217 if (mode) { |
| 1218 move_dreg(reg,dreg); | |
| 148 | 1219 } |
| 1220 free_register(creg); | |
| 1221 creg = dreg = reg; | |
| 1222 regs[dreg]=1; | |
| 152 | 1223 regs[dreg_pair0[dreg-DREG_OFFSET]]=1; |
| 1224 regs[dreg_pair1[dreg-DREG_OFFSET]]=1; | |
| 148 | 1225 } |
| 1226 } | |
| 1227 | |
| 1228 | |
| 1229 void | |
| 130 | 1230 use_var(int arg) |
| 1231 { | |
| 1232 if (car(arg)==REGISTER) | |
| 1233 regs[cadr(arg)]=USING_REG; | |
| 148 | 1234 else if (car(arg)==FREGISTER) |
| 1235 regs[cadr(arg)]=USING_REG; | |
| 130 | 1236 else if (car(arg)==DREGISTER) |
| 148 | 1237 regs[cadr(arg)]=USING_REG; |
| 130 | 1238 } |
| 1239 | |
| 1240 void | |
| 1241 code_save_input_registers() | |
| 1242 { | |
| 1243 int args; | |
| 1244 NMTBL *n; | |
| 1245 int reg; | |
| 1246 int tag; | |
| 1247 int lvar; | |
| 1248 int t; | |
| 1249 /* fnptr->dsp=list4(type,fnptr->dsp,(int)n,0); */ | |
| 1250 int reg_offset = 0; | |
| 1251 int offset = 0; | |
| 1252 | |
| 1253 for(args = fnptr->dsp;args;args = cadr(args)) { | |
| 1254 n = (NMTBL *)caddr(args); | |
| 1255 tag = n->sc; | |
| 1256 reg = n->dsp; | |
| 1257 if (!n||n==&null_nptr) error(REG_ERR); | |
| 1258 if (tag==REGISTER) { | |
| 1259 /* regs[reg]==INPUT_REG case should be considered */ | |
| 1260 n->dsp = offset; | |
| 1261 offset+=size_of_int; | |
| 1262 t = INT; | |
| 1263 reg += reg_offset; /* for duplicated floating point argument */ | |
| 148 | 1264 } else if (tag==FREGISTER) { |
| 1265 /* fregs[reg]==INPUT_REG case should be considered */ | |
| 1266 n->dsp = offset; | |
| 1267 t = n->ty; | |
| 1268 if(t==FLOAT) { offset+=size_of_float; reg_offset+=1; } | |
| 1269 else if(t==DOUBLE) { offset+=size_of_double; reg_offset+=2; } | |
| 1270 else error(-1); | |
| 1271 } else if (tag==DREGISTER) { | |
| 1272 /* fregs[reg]==INPUT_REG case should be considered */ | |
| 1273 n->dsp = offset; | |
| 1274 t = n->ty; | |
| 1275 if(t==FLOAT) { offset+=size_of_float; reg_offset+=1; } | |
| 1276 else if(t==DOUBLE) { offset+=size_of_double; reg_offset+=2; } | |
| 1277 else error(-1); | |
| 130 | 1278 } else { |
| 1279 offset += size(n->ty); | |
| 1280 continue; | |
| 1281 } | |
| 1282 n->sc = LVAR; | |
| 1283 lvar = list2(LVAR,n->dsp); | |
| 1284 g_expr_u(assign_expr0(list2(LVAR,n->dsp),list3(tag,reg,(int)n),n->ty,t)); | |
| 148 | 1285 if (tag==REGISTER||tag==DREGISTER||tag==FREGISTER) { |
| 130 | 1286 free_register(reg); |
| 1287 } | |
| 1288 } | |
| 1289 my_func_args = offset; | |
| 1290 } | |
| 1291 | |
| 1292 int | |
| 1293 simple_args(int e3) | |
| 1294 { | |
| 1295 return | |
| 1296 !contains_in_list(e3,FUNCTION) && | |
| 1297 !contains_in_list(e3,CONV) && | |
| 1298 !contains_in_list(e3,RSTRUCT) && | |
| 164 | 1299 !contains_in_list(e3,STASS) |
| 130 | 1300 ; |
| 1301 } | |
| 1302 | |
| 1303 int | |
| 1304 caller_arg_offset_v(int arg) | |
| 1305 { | |
| 1306 return ARG_LVAR_OFFSET+arg*size_of_int; | |
| 1307 } | |
| 1308 | |
| 1309 int | |
| 1310 function(int e1) | |
| 1311 { | |
| 150 | 1312 int e2,e3,e4,nargs,t; |
| 130 | 1313 int arg,reg_arg,freg_arg,arg_assign; |
| 148 | 1314 int dots; |
| 130 | 1315 int reg_arg_list=0,ret_type,special_lvar; |
| 1316 NMTBL *fn = 0; | |
| 1317 int jmp = 0; | |
| 1318 char *jrn; | |
| 153 | 1319 int iargs=0; |
| 130 | 1320 |
| 1321 special_lvar = -1; | |
| 148 | 1322 ret_type = cadr(cadddr(e1)); |
| 1323 if (ret_type==CHAR) ret_type=INT; | |
| 1324 | |
| 1325 /* check argments type is DOTS? */ | |
| 1326 t = caddr(cadddr(e1)); | |
| 1327 if (t==0 || t==DOTS) dots = 1; | |
| 1328 else { | |
| 1329 dots = 0; | |
| 1330 for(t = caddr(cadddr(e1));t;t = cadr(t)) { | |
| 1331 if (car(t)==DOTS) dots = 1; | |
| 1332 } | |
| 1333 } | |
| 130 | 1334 |
| 1335 e2 = cadr(e1); | |
| 1336 if (car(e2) == FNAME) { | |
| 1337 fn=(NMTBL *)cadr(e2); | |
| 1338 } else { | |
| 1339 jmp = get_register_var(0); | |
| 1340 if (car(jmp)!=REGISTER) error(-1); | |
| 1341 reg_arg_list = list2(jmp,reg_arg_list); | |
| 1342 g_expr(e2); | |
| 1343 code_register(creg,cadr(jmp)); | |
| 1344 /* g_expr(assign_expr0(jmp,e2,INT,INT)); functions are lvalue */ | |
| 1345 } | |
| 1346 | |
| 1347 /* now all input register vars are free */ | |
| 1348 code_save_stacks(); | |
| 1349 set_creg(CREG_REGISTER,0); | |
| 1350 set_freg(FREG_FREGISTER,0); | |
| 148 | 1351 set_dreg(DREG_DREGISTER,0); |
| 130 | 1352 |
| 1353 nargs = reg_arg = freg_arg = arg_assign = 0; | |
| 1354 for (e3 = reverse0(caddr(e1)); e3; e3 = cadr(e3)) { | |
| 1355 t=caddr(e3); | |
| 1356 e4 = car(e3); | |
| 1357 if(scalar(t)) { | |
| 1358 if (reg_arg>=MAX_INPUT_REGISTER_VAR) { | |
| 1359 arg = list2(LVAR,caller_arg_offset_v(nargs)); | |
| 1360 } else if (!simple_args(e3) && cadr(e3)) { | |
| 1361 arg = get_register_var(0); | |
| 1362 arg_assign = list2( | |
| 148 | 1363 assign_expr0(get_input_register_var(reg_arg,0,0), |
| 1364 arg,t,t), | |
| 130 | 1365 arg_assign); |
| 1366 } else { | |
| 1367 arg = get_input_register_var(reg_arg,0,0); | |
| 1368 } | |
| 1369 use_var(arg); /* protect from input register free */ | |
| 1370 reg_arg_list = list2(arg,reg_arg_list); | |
| 1371 g_expr_u(assign_expr0(arg,e4,t,t)); | |
| 153 | 1372 nargs ++ ; reg_arg++; iargs += size_of_int; |
| 130 | 1373 continue; |
| 1374 } else if (t==DOUBLE||t==FLOAT) { | |
| 1375 if (freg_arg>=MAX_INPUT_DREGISTER_VAR) { | |
| 1376 arg = list2(LVAR,caller_arg_offset_v(nargs)); | |
| 148 | 1377 } else if (!simple_args(e3) && cadr(e3)) { |
| 138 | 1378 arg = get_dregister_var(0,1); |
| 130 | 1379 arg_assign = list2( |
| 148 | 1380 assign_expr0(get_input_dregister_var(freg_arg,0,0,1), |
| 1381 arg,t,t), | |
| 130 | 1382 arg_assign); |
| 1383 } else { | |
| 138 | 1384 arg = get_input_dregister_var(freg_arg,0,0,1); |
| 130 | 1385 } |
| 1386 use_var(arg); /* protect from input register free */ | |
| 1387 reg_arg_list = list2(arg,reg_arg_list); | |
| 1388 g_expr_u(assign_expr0(arg,e4,t,t)); /* XXX */ | |
| 1389 freg_arg++; | |
| 1390 nargs += size(t)/size_of_int; | |
| 153 | 1391 if (t==DOUBLE) iargs += size(t); |
| 130 | 1392 continue; |
| 1393 } else if (car(t)==STRUCT||car(t)==UNION) { | |
| 1394 arg = list2(LVAR,caller_arg_offset_v(nargs)); | |
| 1395 nargs += struct_push(e4,t,arg); | |
| 153 | 1396 iargs += ((size(t)+3)/size_of_int)*size_of_int; |
| 130 | 1397 continue; |
| 1398 } else { | |
| 1399 error(TYERR); | |
| 1400 } | |
| 1401 ++nargs; | |
| 1402 } | |
| 1403 if (max_func_args<nargs) max_func_args=nargs; | |
| 153 | 1404 if (max_func_iargs<iargs) max_func_iargs=iargs; |
| 130 | 1405 for(;arg_assign;arg_assign=cadr(arg_assign)) { |
| 1406 g_expr_u(car(arg_assign)); | |
| 1407 } | |
| 1408 if (car(e2) == FNAME) { | |
| 1409 printf("\tbl\tL_%s$stub\n",fn->nm); | |
| 1410 } else { | |
| 1411 jrn = register_name(cadr(jmp)); | |
| 131 | 1412 printf("\tj %s\n",jrn); |
| 130 | 1413 } |
| 1414 for(;reg_arg_list;reg_arg_list=cadr(reg_arg_list)) { | |
| 1415 arg = car(reg_arg_list); | |
| 148 | 1416 if (car(arg)==REGISTER||car(arg)==DREGISTER||car(arg)==FREGISTER) |
| 1417 free_register(cadr(arg)); | |
| 130 | 1418 else if (car(arg)==LVAR&&cadr(arg)<0) free_lvar(cadr(arg)); |
| 1419 } | |
| 148 | 1420 if (ret_type==DOUBLE) { |
| 1421 set_dreg(RET_DREGISTER,0); | |
| 1422 } else if (ret_type==FLOAT) { | |
| 130 | 1423 set_freg(RET_FREGISTER,0); |
| 1424 } else if (ret_type==VOID) { | |
| 1425 } else { | |
| 1426 set_creg(RET_REGISTER,0); | |
| 1427 } | |
| 1428 return ret_type; | |
| 1429 } | |
| 1430 | |
| 1431 void | |
| 1432 code_frame_pointer(int e3) { | |
| 1433 #if R1SAVE | |
| 131 | 1434 printf("\tmove $fp,%s\n",register_name(e3)); |
| 130 | 1435 #else |
| 131 | 1436 printf("\tmove $fp,%s\n",register_name(e3)); |
| 130 | 1437 #endif |
| 1438 } | |
| 1439 | |
| 1440 | |
| 1441 void | |
| 1442 code_fix_frame_pointer(int disp_offset) { | |
| 1443 int l = 0; | |
| 131 | 1444 printf("\tla $fp,"); |
| 1445 printf("%d+L_%d($sp)\n",FUNC_LVAR,lvar_offset_label); | |
| 130 | 1446 } |
| 1447 | |
| 1448 void | |
| 1449 code_jmp(char *s) { | |
| 1450 max_reg_var = REG_VAR_BASE-REG_VAR_MIN; | |
| 1451 max_freg_var = FREG_VAR_BASE-FREG_VAR_MIN; | |
| 131 | 1452 printf("\tj L_%s\n",s); |
| 130 | 1453 } |
| 1454 | |
| 1455 | |
| 1456 void | |
| 1457 code_indirect_jmp(int e2) { | |
| 1458 max_reg_var = REG_VAR_BASE-REG_VAR_MIN; | |
| 1459 max_freg_var = FREG_VAR_BASE-FREG_VAR_MIN; | |
| 131 | 1460 printf("\tj %s\n",register_name(e2)); |
| 130 | 1461 } |
| 1462 | |
| 1463 int | |
| 196 | 1464 code_rindirect(int e1, int offset, int us) |
| 1465 { | |
| 1466 char *crn; | |
| 1467 g_expr(e1); | |
| 1468 crn=register_name(creg); | |
| 1469 printf("\tlw %s,%d(%s)\n",crn,offset,crn); | |
| 1470 return INT; | |
| 1471 } | |
| 1472 | |
| 1473 int | |
| 1474 code_crindirect(int e1, int offset, int us) | |
| 130 | 1475 { |
| 1476 char *crn; | |
| 196 | 1477 g_expr(e1); |
| 1478 crn=register_name(creg); | |
| 1479 if (us) { | |
| 1480 printf("\tlbu %s,%d(%s)\n",crn,offset,crn); | |
| 1481 return UCHAR; | |
| 1482 } else { | |
| 1483 printf("\tlb %s,%d(%s)\n",crn,offset,crn); | |
| 1484 return CHAR; | |
| 130 | 1485 } |
| 196 | 1486 } |
| 1487 | |
| 1488 int | |
| 1489 code_srindirect(int e1, int offset, int us) | |
| 1490 { | |
| 1491 char *crn; | |
| 1492 g_expr(e1); | |
| 130 | 1493 crn=register_name(creg); |
| 196 | 1494 if (us) { |
| 1495 printf("\tlhu %s,%d(%s)\n",crn,offset,crn); | |
| 1496 return USHORT; | |
| 1497 } else { | |
| 1498 printf("\tlh %s,%d(%s)\n",crn,offset,crn); | |
| 1499 return SHORT; | |
| 1500 } | |
| 1501 } | |
| 1502 | |
| 1503 #if FLOAT_CODE | |
| 1504 int | |
| 1505 code_drindirect(int e1, int offset, int d) | |
| 1506 { | |
| 1507 char *crn; | |
| 1508 g_expr(e1); | |
| 1509 crn=register_name(creg); | |
| 1510 if (d) { | |
| 149 | 1511 printf("\tlw %s,%d(%s)\n", |
| 1512 dregister_name0(dreg),offset,crn); | |
| 1513 printf("\tlw %s,%d(%s)\n", | |
| 1514 dregister_name1(dreg),offset+size_of_int,crn); | |
| 1515 creg = dreg; | |
| 148 | 1516 return DOUBLE; |
| 196 | 1517 } else { |
| 1518 printf("\tl.s %s,%d(%s)\n", fregister_name(freg),offset,crn); | |
| 1519 creg = freg; | |
| 1520 return FLOAT; | |
| 130 | 1521 } |
| 1522 } | |
| 196 | 1523 #endif |
| 1524 | |
| 1525 #if LONGLONG_CODE | |
| 1526 int | |
| 1527 code_lrindirect(int e1, int offset, int us) | |
| 1528 { | |
| 1529 char *crn; | |
| 1530 g_expr(e1); | |
| 1531 crn=register_name(creg); | |
| 203 | 1532 return LONGLONG; |
| 196 | 1533 } |
| 1534 #endif | |
| 130 | 1535 |
| 1536 void | |
| 1537 code_assign_gvar(int e2,int creg,int byte) { | |
| 151 | 1538 char *crn,*name; |
|
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1539 |
| 151 | 1540 name = ((NMTBL*)cadr(e2))->nm; |
| 130 | 1541 crn=register_name(creg); |
| 167 | 1542 if (byte==1) { |
| 151 | 1543 printf("\tsb %s,%s\n",crn,name); |
| 167 | 1544 } if (byte==size_of_short) { |
| 1545 printf("\tsh %s,%s\n",crn,name); | |
| 130 | 1546 } else { |
| 151 | 1547 printf("\tsw %s,%s\n",crn,name); |
| 130 | 1548 } |
| 1549 } | |
| 1550 | |
| 1551 void | |
| 1552 code_assign_lvar(int e2,int creg,int byte) { | |
| 1553 char *crn; | |
| 1554 crn=register_name(creg); | |
| 167 | 1555 if (byte==1) { |
| 1556 printf("\tsb %s,",crn); | |
| 1557 } else if (byte==size_of_short) { | |
| 1558 printf("\tsh %s,",crn); | |
| 130 | 1559 } else { |
| 167 | 1560 printf("\tsw %s,",crn); |
| 130 | 1561 } |
| 167 | 1562 lvar(e2); |
| 130 | 1563 } |
| 1564 | |
| 1565 void | |
| 1566 code_assign_register(int e2,int byte,int creg) { | |
| 1567 if (e2!=creg) | |
| 148 | 1568 printf("\tmove %s,%s\n",register_name(e2),register_name(creg)); |
| 130 | 1569 } |
| 1570 | |
| 1571 void | |
| 1572 code_assign(int e2,int byte,int creg) { | |
| 1573 char *drn=register_name(e2); | |
| 1574 char *crn=register_name(creg); | |
| 1575 | |
| 167 | 1576 if (byte==1) { |
| 148 | 1577 printf("\tsb %s,0(%s)\n",crn,drn); |
| 167 | 1578 } else if (byte==size_of_short) { |
| 1579 printf("\tsh %s,0(%s)\n",crn,drn); | |
| 130 | 1580 } else { |
| 148 | 1581 printf("\tsw %s,0(%s)\n",crn,drn); |
| 130 | 1582 } |
| 1583 } | |
| 1584 | |
| 1585 | |
| 1586 void | |
| 1587 code_register_assop(int e2,int op,int byte) { | |
| 1588 int reg; | |
| 1589 int xreg = creg; | |
| 1590 creg = reg = e2; | |
| 1591 tosop(op,xreg); | |
| 1592 creg = xreg; | |
| 1593 if (creg!=reg) | |
| 148 | 1594 printf("\tmove %s,%s\n",register_name(creg),register_name(reg)); |
| 130 | 1595 } |
| 1596 | |
| 1597 | |
| 1598 void | |
| 163 | 1599 code_assop(int op,int byte,int sign) { |
| 130 | 1600 char *xrn,*crn,*drn; |
| 1601 int xreg; | |
| 1602 int edx = get_register(); if(!edx) error(-1); | |
| 1603 xrn = register_name(xreg = emit_pop(0)); /* pop e3 value */ | |
| 205 | 1604 regs[xreg]=1; |
| 130 | 1605 printf("# assop\n\tmr %s,%s\n",register_name(edx),register_name(creg)); |
| 163 | 1606 ld_indexx(byte,0,edx,sign); |
| 130 | 1607 tosop(op,xreg); |
| 1608 crn = register_name(creg); | |
| 1609 drn = register_name(edx); | |
| 168 | 1610 printf("\t%s %s,0(%s)\n",cstore(byte),crn,drn); |
| 130 | 1611 free_register(edx); |
| 1612 emit_pop_free(xreg); | |
| 1613 } | |
| 1614 | |
| 1615 | |
| 1616 void | |
| 1617 tosop(int op,int oreg) | |
| 1618 { | |
| 1619 int dx; | |
| 149 | 1620 char *orn,*crn; |
| 130 | 1621 |
| 1622 if(oreg==-1) { | |
| 1623 error(-1); | |
| 1624 } else if (oreg<= -REG_LVAR_OFFSET) { | |
| 1625 dx = get_register(); if (dx<0) error(-1); | |
| 1626 code_rlvar(oreg+REG_LVAR_OFFSET,dx); | |
| 1627 oreg = dx; | |
| 1628 } | |
| 1629 | |
| 1630 switch(op) { | |
| 1631 case LSHIFT: | |
| 1632 case ULSHIFT: | |
| 131 | 1633 shift("sll",oreg); |
| 130 | 1634 return; |
| 1635 case RSHIFT: | |
| 131 | 1636 shift("srl",oreg); |
| 130 | 1637 return; |
| 1638 case URSHIFT: | |
| 131 | 1639 shift("sra",oreg); |
| 130 | 1640 return; |
| 1641 } | |
| 1642 orn = register_name(oreg); | |
| 1643 crn = register_name(creg); | |
| 1644 switch(op) { | |
| 1645 case ADD: | |
| 131 | 1646 printf("\taddu %s,%s,%s\n",crn,crn,orn); |
| 130 | 1647 break; |
| 1648 case SUB: | |
| 131 | 1649 printf("\tsubu %s,%s,%s\n",crn,crn,orn); |
| 130 | 1650 break; |
| 1651 case CMP: | |
| 131 | 1652 printf("\tslt %s,%s\n",crn,orn); |
| 130 | 1653 break; |
| 1654 case BAND: | |
| 1655 printf("\tand %s,%s,%s\n",crn,crn,orn); | |
| 1656 break; | |
| 1657 case EOR: | |
| 1658 printf("\txor %s,%s,%s\n",crn,crn,orn); | |
| 1659 break; | |
| 1660 case BOR: | |
| 1661 printf("\tor %s,%s,%s\n",crn,crn,orn); | |
| 1662 break; | |
| 1663 case MUL: | |
| 131 | 1664 printf("\tmult %s,%s,%s\n",crn,crn,orn); |
| 130 | 1665 break; |
| 1666 case UMUL: | |
| 131 | 1667 printf("\tmultu %s,%s,%s\n",crn,crn,orn); |
| 130 | 1668 break; |
| 148 | 1669 case DIV: |
| 1670 printf("\tdivw %s,%s,%s\n",crn,crn,orn); | |
| 1671 break; | |
| 149 | 1672 case UDIV: case MOD: case UMOD: |
| 148 | 1673 printf("\t%s $0,%s,%s\n",(op==UDIV||op==UMOD)?"divu":"div",crn,orn); |
| 1674 printf("\t%s %s\n",(op==MOD||op==UMOD)?"mflo":"mfhi",crn); | |
| 1675 printf("\t.set noreorder\n"); | |
| 1676 printf("\tbeql %s,$0,1f\n",orn); | |
| 1677 printf("\tbreak 7\n"); | |
| 1678 printf("1:\n"); | |
| 1679 printf("\t.set reorder\n"); | |
| 1680 break; | |
| 130 | 1681 default: |
| 1682 error(-1); | |
| 1683 } | |
| 1684 if(oreg!=creg) free_register(oreg); | |
| 1685 } | |
| 1686 | |
| 1687 | |
| 1688 void | |
| 1689 shift(char *op, int reg) | |
| 1690 { | |
| 1691 char *crn = register_name(creg); | |
| 1692 char *rrn = register_name(reg); | |
| 1693 printf("\t%s %s,%s,%s\n",op,crn,rrn,crn); | |
| 1694 } | |
| 1695 | |
| 189 | 1696 int |
| 1697 code_const_op_p(int op,int v) | |
| 1698 { | |
| 1699 if (op==BAND||op==DIV||op==UDIV||op==MOD||op==UMOD) return 0; | |
| 1700 return 0; | |
| 1701 } | |
| 1702 | |
| 1703 void | |
| 1704 oprtc(int op,int v) | |
| 1705 { | |
| 1706 } | |
| 1707 | |
| 1708 | |
| 130 | 1709 void |
| 163 | 1710 ld_indexx(int byte, int n, int xreg,int sign) |
| 130 | 1711 { |
| 1712 char *crn = register_name(creg); | |
| 168 | 1713 printf("\t%s %s,%d(%s)\n",cload(sign,byte),crn,n, |
| 1714 register_name(xreg)); | |
| 130 | 1715 } |
| 1716 | |
| 1717 int | |
| 1718 code_csvalue() | |
| 1719 { | |
| 1720 return creg; | |
| 1721 } | |
| 1722 | |
| 1723 void | |
| 1724 code_cmpdimm(int e, int csreg) | |
| 1725 { | |
| 1726 /* used in dosiwtch() */ | |
| 1727 if(chk) return; | |
| 150 | 1728 creg = use_int(creg); |
| 131 | 1729 printf("\tli %s,%d\n",register_name(creg),e); |
| 148 | 1730 cmpreg = csreg; |
| 130 | 1731 } |
| 1732 | |
| 1733 void | |
|
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1734 code_opening(char *s) |
| 130 | 1735 { |
| 131 | 1736 /* this is called once per month */ |
| 1737 char *p=cheapp; | |
| 1738 | |
|
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1739 printf("\t.file \"%s\"\n",s); |
| 130 | 1740 /* printf("\t.version\t\"01.01\"\n"); */ |
| 1741 /* printf("gcc2_compiled.:\n"); */ | |
| 131 | 1742 printf("\t.abicalls\n"); |
| 1743 printf("\t.text\n"); | |
| 1744 | |
| 1745 if (asi) { | |
| 148 | 1746 fclose(asi); |
| 1747 asi = 0; | |
| 131 | 1748 } |
| 1749 while ((*cheapp++ = *s++)) { | |
| 1750 if (*s=='.') { | |
| 1751 *cheapp++=*s++; *cheapp++='i'; | |
| 148 | 1752 *cheapp++=0; |
| 131 | 1753 break; |
| 1754 } | |
| 1755 } | |
| 1756 asi = fopen(p,"w"); | |
|
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1757 printf(".include \"%s\"\n",p); |
| 131 | 1758 if (!asi) error(-1); |
| 130 | 1759 } |
| 1760 | |
| 1761 void | |
| 1762 rexpr(int e1, int l1, char *s,int t) | |
| 1763 { | |
| 132 | 1764 char *crn,*drn; |
| 148 | 1765 if (cmpreg>=0) { free_register(cmpreg); cmpreg = -1; } |
| 132 | 1766 |
| 1767 g_expr(cadr(e1)); | |
| 1768 emit_push(); | |
| 1769 g_expr(caddr(e1)); | |
| 150 | 1770 cmpreg = emit_pop(0); |
| 132 | 1771 crn = register_name(creg); |
| 148 | 1772 drn = register_name(cmpreg); |
| 132 | 1773 |
| 1774 if (s[1] == 's') { | |
| 148 | 1775 if (s[16]=='x') { |
| 1776 /* slt $2,$2,$3; xroi $2,$2,0x1; beq $2,$0,L1 */ | |
| 1777 printf(s,crn,drn,drn,crn,crn,crn,l1); | |
| 1778 } else { | |
| 1779 /* slt $2,$2,$3; beq $2,$0,L1 */ | |
| 1780 printf(s,crn,drn,drn,crn,l1); | |
| 1781 } | |
| 132 | 1782 } else { |
| 148 | 1783 /* beq $2,$3,L1 */ |
| 1784 printf(s,crn,drn,l1); | |
| 132 | 1785 } |
| 148 | 1786 free_register(cmpreg) ; cmpreg = -1; |
| 130 | 1787 } |
| 1788 | |
| 1789 void | |
| 1790 jcond(int l, char cond) | |
| 131 | 1791 { |
| 130 | 1792 if (chk) return; |
| 148 | 1793 if (cmpreg==-1) error(-1); |
| 150 | 1794 printf("\tb%s %s,%s,L_%d\n", |
| 1795 cond?"ne":"eq", | |
| 1796 register_name(creg),register_name(cmpreg), | |
| 1797 l); | |
| 205 | 1798 free_register(cmpreg); cmpreg = -1; |
| 130 | 1799 } |
| 1800 | |
| 1801 void | |
| 1802 jmp(int l) | |
| 1803 { | |
| 1804 control=0; | |
| 1805 if (chk) return; | |
| 131 | 1806 printf("\tj\tL_%d\n",l); |
| 130 | 1807 } |
| 1808 | |
| 1809 void | |
| 1810 gen_comment(char *s) | |
| 1811 { | |
| 1812 if (chk) return; | |
| 1813 printf("## %s",s); | |
| 1814 } | |
| 1815 | |
| 1816 void | |
| 1817 code_enter(char *name) | |
| 1818 { | |
| 1819 if (output_mode!=TEXT_EMIT_MODE) | |
| 1820 text_mode(); | |
| 1821 else | |
| 132 | 1822 printf("\t.align 3\n"); |
| 153 | 1823 /* if (stmode!=STATIC) |
| 1824 printf(".globl _%s\n",name); */ | |
| 132 | 1825 printf(".ent %s\n",name); |
| 130 | 1826 printf("_%s:\n",name); |
| 1827 code_disp_label=fwdlabel(); | |
| 132 | 1828 |
| 1829 printf("\t.set noreorder\n"); | |
| 1830 printf("\t.cpload $25\n"); | |
| 1831 printf("\t.set reorder\n"); | |
| 1832 printf("\tsubu $sp,$sp,L_%d\n",code_disp_label); | |
| 153 | 1833 printf("\t.cprestore L_%d\n",cprestore_label); |
| 148 | 1834 |
| 130 | 1835 max_func_args = 0; |
| 153 | 1836 max_func_iargs = 0; |
| 130 | 1837 } |
| 1838 | |
| 1839 | |
| 1840 void | |
| 1841 code_enter1(int args) | |
| 1842 { | |
| 1843 set_creg(CREG_REGISTER,0); | |
| 1844 set_freg(FREG_FREGISTER,0); | |
| 148 | 1845 set_dreg(DREG_DREGISTER,0); |
| 130 | 1846 } |
| 1847 | |
| 1848 void | |
| 1849 code_leave(char *name) | |
| 1850 { | |
| 1851 int r1_offsetv; | |
| 1852 disp&= -size_of_int; | |
| 1853 r1_offsetv = -disp+max_func_args*size_of_int+code_disp_offset; | |
| 1854 | |
| 132 | 1855 fprintf(asi,"L_%d=%d\n",code_disp_label,-r1_offsetv); |
| 148 | 1856 |
| 130 | 1857 local_table(); |
| 1858 free_all_register(); | |
| 1859 } | |
| 1860 | |
| 1861 void | |
| 1862 enter(char *name) | |
| 1863 { | |
| 1864 if (output_mode!=TEXT_EMIT_MODE) | |
| 1865 text_mode(); | |
| 1866 else | |
| 1867 printf("\t.align 2\n"); | |
| 153 | 1868 /* if (stmode!=STATIC) |
| 1869 printf(".globl _%s\n",name); */ | |
| 132 | 1870 printf(".ent %s\n",name); |
| 130 | 1871 printf("_%s:\n",name); |
| 132 | 1872 |
| 130 | 1873 r1_offset_label = fwdlabel(); |
| 1874 lvar_offset_label = fwdlabel(); | |
| 152 | 1875 disp_label = fwdlabel(); |
| 132 | 1876 mask_label = fwdlabel(); |
| 1877 mask1_label = fwdlabel(); | |
| 1878 fmask_label = fwdlabel(); | |
| 1879 fmask1_label = fwdlabel(); | |
| 152 | 1880 cprestore_label = fwdlabel(); |
| 132 | 1881 |
| 1882 printf("\t.frame $fp,L_%d,$31\n",r1_offset_label); | |
| 1883 printf("\t.mask L_%d,L_%d\n",mask_label,mask1_label); | |
| 1884 printf("\t.fmask L_%d,L_%d\n",fmask_label,fmask1_label); | |
| 1885 | |
| 1886 printf("\t.set noreorder\n"); | |
| 1887 printf("\t.cpload $25\n"); | |
| 1888 printf("\t.set reorder\n"); | |
| 152 | 1889 printf("\tsubu $sp,$sp,L_%d\n",disp_label); |
| 153 | 1890 printf("\t.cprestore L_%d\n",cprestore_label); |
| 130 | 1891 max_func_args = 0; |
| 153 | 1892 max_func_iargs = 0; |
| 148 | 1893 |
| 130 | 1894 } |
| 1895 | |
| 1896 void | |
| 1897 enter1() | |
| 1898 { | |
| 1899 set_creg(CREG_REGISTER,0); | |
| 1900 set_freg(FREG_FREGISTER,0); | |
| 148 | 1901 set_dreg(DREG_DREGISTER,0); |
| 130 | 1902 } |
| 1903 | |
| 153 | 1904 static unsigned int |
| 1905 code_mask_label() | |
| 130 | 1906 { |
| 153 | 1907 int i; |
| 1908 unsigned int mask=0; | |
| 1909 for(i=0;i<32;i++) { | |
| 1910 if (i==28||i==31||(REG_VAR_MIN<=i&&i<=REG_VAR_MIN+max_reg_var)) { | |
| 1911 mask |= (1<<i); | |
| 1912 } | |
| 1913 } | |
| 1914 return mask; | |
| 130 | 1915 } |
| 1916 | |
| 153 | 1917 static unsigned int |
| 1918 code_fmask_label() | |
| 1919 { | |
| 1920 int i; | |
| 1921 unsigned int mask=0; | |
| 1922 for(i=0;i<32;i++) { | |
| 1923 if (FREG_VAR_MIN<=i&&i<=FREG_VAR_MIN+max_freg_var) { | |
| 1924 mask |= (1<<i); | |
| 1925 } | |
| 1926 } | |
| 1927 return mask; | |
| 1928 } | |
| 1929 | |
| 1930 | |
| 130 | 1931 void |
| 1932 leave(int control, char *name) | |
| 1933 { | |
| 131 | 1934 int retcont1=0,sz; |
| 152 | 1935 int r1_offsetv; |
| 130 | 1936 |
| 1937 if (max_freg_var>=0 && max_freg_var<=3) max_freg_var=3; | |
| 153 | 1938 reg_save = |
| 1939 (REAL_MAX_REGISTER-(REG_VAR_BASE-max_reg_var))*size_of_int; | |
| 1940 freg_save = | |
| 1941 (REAL_MAX_FREGISTER-(FREG_VAR_BASE-max_freg_var))*size_of_float; | |
| 130 | 1942 |
| 1943 if (control) { | |
| 1944 code_set_return_register(1); | |
| 1945 } | |
| 1946 if (retcont) { | |
| 152 | 1947 /* return from CbC segement */ |
| 130 | 1948 if (control) jmp(retlabel); |
| 1949 retcont1 = fwdlabel(); | |
| 1950 fwddef(retcont); | |
| 152 | 1951 if (cadr(fnptr->ty)==FLOAT) { |
| 1952 if (freg!=RET_FREGISTER) | |
| 1953 printf("\tmov.s %s,%s\n",register_name(RET_FREGISTER), | |
| 1954 register_name(freg)); | |
| 1955 } else if (cadr(fnptr->ty)==DOUBLE) { | |
| 1956 move_dreg(RET_DREGISTER,dreg); | |
| 130 | 1957 } else if (cadr(fnptr->ty)>0&&( |
| 1958 car(cadr(fnptr->ty))==STRUCT || | |
| 1959 car(cadr(fnptr->ty))==UNION)) { | |
| 1960 sz = size(cadr(fnptr->ty)); | |
| 152 | 1961 printf("\tli $4,%d\n",sz); |
| 1962 printf("\tsubl $5,$4,$fp\n"); | |
| 1963 printf("\tlw $3,(%d)($fp)\n",(my_func_args-1)*size_of_int); | |
| 130 | 1964 emit_copy(6,3,sz,0,1,1); |
| 1965 } else if (cadr(fnptr->ty)!=VOID) { | |
| 152 | 1966 if (creg!=RET_REGISTER) |
| 1967 printf("\tmove $3,%s\n",register_name(creg)); | |
| 130 | 1968 } |
| 152 | 1969 printf("\tj L_%d\n",retcont1); |
| 130 | 1970 } |
| 1971 fwddef(retlabel); | |
| 1972 if (retcont) { | |
| 1973 fwddef(retcont1); | |
| 1974 } | |
| 1975 if (max_freg_var>=0) { | |
| 1976 } else { | |
| 1977 } | |
| 152 | 1978 fprintf(asi,"L_%d=%d\n",r1_offset_label,0); |
| 1979 fprintf(asi,"L_%d=%d\n",lvar_offset_label,0); | |
| 153 | 1980 fprintf(asi,"L_%d=0x%x\n",mask_label,code_mask_label()); |
| 152 | 1981 fprintf(asi,"L_%d=%d\n",mask1_label,0); |
| 153 | 1982 fprintf(asi,"L_%d=0x%x\n",fmask_label ,code_fmask_label()); |
| 152 | 1983 fprintf(asi,"L_%d=%d\n",fmask1_label,0); |
| 153 | 1984 fprintf(asi,"L_%d=%d\n",cprestore_label ,max_func_iargs); |
| 130 | 1985 |
| 1986 disp &= -size_of_int; | |
| 152 | 1987 r1_offsetv = 0; |
| 1988 | |
| 1989 printf("\tmove $sp,$fp\n"); | |
| 1990 printf("\tlw $31,%d($sp)\n",-disp); | |
| 1991 printf("\tlw $fp,%d($sp)\n",-disp-4); | |
| 1992 printf("\taddu $sp,$sp,%d\n",r1_offsetv); | |
| 1993 printf("\tj $31\n"); | |
| 1994 printf("\t.end print\n"); | |
| 1995 | |
| 1996 fprintf(asi,"L_%d=%d\n",disp_label,-r1_offsetv); | |
| 130 | 1997 |
| 1998 code_offset_set(); | |
| 1999 local_table(); | |
| 2000 labelno++; | |
| 2001 free_all_register(); | |
| 2002 } | |
| 2003 | |
| 2004 | |
| 2005 void | |
| 2006 code_set_return_register(int mode) { | |
| 148 | 2007 if (cadr(fnptr->ty)==DOUBLE) { |
| 2008 set_dreg(RET_DREGISTER,mode); | |
| 2009 } else if (cadr(fnptr->ty)==FLOAT) { | |
| 130 | 2010 set_freg(RET_FREGISTER,mode); |
| 148 | 2011 } else if (cadr(fnptr->ty)==VOID) { |
| 130 | 2012 } else { |
| 2013 set_creg(RET_REGISTER,mode); | |
| 2014 } | |
| 2015 } | |
| 2016 | |
| 189 | 2017 int |
| 2018 code_get_fixed_creg(int reg,int type) { | |
| 2019 return creg; | |
| 2020 } | |
| 2021 | |
| 130 | 2022 void |
| 189 | 2023 code_set_fixed_creg(int reg,int mode,int type) { |
| 148 | 2024 if (type==FLOAT) { |
| 189 | 2025 set_freg(reg,mode); |
| 148 | 2026 } else if (type==DOUBLE) { |
| 189 | 2027 set_dreg(reg,mode); |
| 130 | 2028 } else { |
| 189 | 2029 set_creg(reg,mode); |
| 130 | 2030 } |
| 2031 } | |
| 2032 | |
| 189 | 2033 |
| 130 | 2034 void |
| 2035 gen_gdecl(char *n, int gpc) | |
| 2036 { | |
| 2037 if (stmode!=STATIC) | |
| 153 | 2038 printf("\t.globl _%s\n",n); |
| 130 | 2039 } |
| 2040 | |
| 2041 void | |
| 2042 align(int t) | |
| 2043 { | |
| 2044 if (t!=CHAR) { | |
| 2045 if (data_alignment & 1) | |
| 2046 printf("\t.align 2\n"); | |
| 2047 data_alignment = 0; | |
| 2048 } | |
| 2049 } | |
| 2050 | |
| 2051 void | |
| 2052 emit_data(int e, int t, NMTBL *n) | |
| 2053 { | |
| 2054 int l; | |
| 195 | 2055 #if FLOAT_CODE |
| 130 | 2056 double d; |
| 2057 float f; | |
| 195 | 2058 #endif |
| 130 | 2059 char *name; |
| 2060 name = n->nm; | |
| 156 | 2061 if(mode!=GDECL&&mode!=STADECL) { |
| 130 | 2062 error(-1); return; |
| 2063 } | |
| 2064 if (chk) return; | |
| 2065 if (n->dsp != -1) { | |
| 2066 n->dsp = -1; /* initiallized flag */ | |
| 153 | 2067 /* printf(".globl\t_%s\n",name); */ |
| 130 | 2068 data_mode(name); |
| 2069 align(t); | |
| 2070 printf("_%s:\n",name); | |
| 2071 } else { | |
| 2072 data_mode(0); | |
| 2073 } | |
| 2074 if(car(e)==CONST) { | |
| 168 | 2075 if (t==CHAR||t==UCHAR) { |
| 130 | 2076 printf("\t.byte %d\n",cadr(e)); |
| 2077 if (data_alignment>0) | |
| 2078 data_alignment++; | |
| 2079 gpc += 1; | |
| 168 | 2080 } else if (t==SHORT||t==USHORT) { |
| 2081 printf("\t.short %d\n",cadr(e)); | |
| 130 | 2082 if (data_alignment>0) data_alignment++; |
| 2083 gpc += 2; | |
| 2084 } else { | |
| 148 | 2085 printf("\t.word %d\n",cadr(e)); |
| 130 | 2086 gpc += size_of_int; |
| 2087 } | |
| 195 | 2088 #if FLOAT_CODE |
| 130 | 2089 } else if(t==DOUBLE) { |
| 148 | 2090 d = dcadr(e); |
| 153 | 2091 printf("\t.word\t0x%x\n\t.word\t0x%x\n",code_d1(d),code_d2(d)); |
| 130 | 2092 } else if(t==FLOAT) { |
| 148 | 2093 f = dcadr(e); |
| 2094 printf("\t.word\t0x%x\n",*(int *)&f); | |
| 195 | 2095 #endif |
| 130 | 2096 } else if(t!=CHAR) { |
| 2097 gpc += size_of_int; | |
| 148 | 2098 if(car(e)==ADDRESS&&car(cadr(e))==GVAR) { |
| 2099 printf("\t.word _%s\n",((NMTBL *)cadr(cadr(e)))->nm); | |
| 2100 } else if(car(e)==FNAME) { | |
| 2101 printf("\t.word _%s\n",((NMTBL *)cadr(e))->nm); | |
| 2102 } else if(car(e)==GVAR) { | |
| 2103 printf("\t.word _%s\n",((NMTBL *)cadr(e))->nm); | |
| 2104 } else if(car(e)==STRING) { | |
| 2105 if (car(n->ty)!=ARRAY || cadr(n->ty)!=CHAR) { | |
| 2106 l = fwdlabel(); | |
| 2107 printf("\t.word L_%d\n",l); | |
| 2108 printf(".rdata\n\t.align 2\n"); | |
| 2109 printf("L_%d:\n",l); | |
| 2110 output_mode = RODATA_EMIT_MODE; | |
| 2111 } | |
| 2112 ascii((char *)cadr(e)); | |
| 130 | 2113 } else error(TYERR); |
| 168 | 2114 } else error(TYERR); |
| 130 | 2115 } |
| 2116 | |
| 2117 void | |
| 2118 emit_data_closing(NMTBL *n) | |
| 2119 { | |
| 2120 #ifdef DOT_SIZE | |
| 2121 int lb; | |
| 2122 #endif | |
| 2123 if (chk) return; | |
| 2124 if (mode==GDECL) { | |
| 2125 data_mode(0); | |
| 2126 #ifdef DOT_SIZE | |
| 2127 lb=fwdlabel(); | |
| 2128 printf("L_%d:\n",lb); | |
| 2129 printf("\t.size\t%s,L_%d-%s\n",n->nm,lb,n->nm); | |
| 2130 #endif | |
| 2131 } | |
| 2132 } | |
| 2133 | |
| 149 | 2134 void |
| 130 | 2135 global_table(void) |
| 2136 { | |
| 2137 NMTBL *n; | |
| 131 | 2138 int init; |
| 130 | 2139 init=0; |
| 2140 for(n=ntable;n < &ntable[GSYMS];n++) { | |
| 148 | 2141 if ((n->sc == GVAR) && n->dsp != -1) { |
| 2142 /* n->dsp = -1 means initialized global */ | |
| 2143 if (init==0) { | |
| 2144 data_mode(0); | |
| 2145 init=1; | |
| 2146 } | |
| 2147 printf(".comm _%s,%d\n",n->nm,size(n->ty)); | |
| 2148 } else if ((n->sc==STATIC) && n->dsp != -1) { | |
| 2149 /* n->dsp = -1 means initialized global */ | |
| 2150 if (init==0) { | |
| 2151 data_mode(0); | |
| 2152 init=1; | |
| 2153 } | |
| 2154 printf(".lcomm _%s,%d\n",n->nm,size(n->ty)); | |
| 2155 } | |
| 130 | 2156 } |
| 2157 } | |
| 2158 | |
| 2159 void | |
| 2160 local_table(void) | |
| 2161 { | |
| 2162 NMTBL *n; | |
| 2163 int init; | |
| 2164 init=0; | |
| 2165 /* static local variables */ | |
| 2166 for(n=ntable+GSYMS;n < &ntable[GSYMS+LSYMS];n++) { | |
| 2167 if (n->sc == GVAR) { | |
| 2168 if (init==0) { | |
| 2169 data_mode(0); | |
| 2170 init=1; | |
| 2171 } | |
| 156 | 2172 if (n->dsp!=-1) /* n->dsp = -1 means initialized global */ |
| 130 | 2173 printf(".lcomm _%s,%d\n",n->nm,size(n->ty)); |
| 2174 } | |
| 2175 } | |
| 2176 } | |
| 2177 | |
| 2178 void | |
| 2179 text_mode(void) | |
| 2180 { | |
| 2181 if (output_mode!=TEXT_EMIT_MODE) { | |
| 2182 printf(".text\n"); | |
| 2183 printf("\t.align 2\n"); | |
| 2184 output_mode = TEXT_EMIT_MODE; | |
| 2185 } | |
| 2186 } | |
| 2187 | |
| 2188 void | |
| 2189 data_mode(char *name) | |
| 2190 { | |
| 2191 if (output_mode!=DATA_EMIT_MODE) { | |
| 2192 printf(".data\n"); | |
| 2193 output_mode = DATA_EMIT_MODE; | |
| 2194 } | |
| 2195 if (name) | |
| 2196 printf("\t.type\t%s,@object\n",name); | |
| 2197 } | |
| 2198 | |
| 195 | 2199 #if FLOAT_CODE |
| 2200 | |
| 130 | 2201 char * |
| 2202 fstore(int d) | |
| 2203 { | |
| 148 | 2204 return (d?"stfd":"stfs"); |
| 130 | 2205 } |
| 2206 | |
| 2207 char * | |
| 2208 fload(int d) | |
| 2209 { | |
| 148 | 2210 return d?"lfd":"lfs"; |
| 130 | 2211 } |
| 2212 | |
| 153 | 2213 static |
| 2214 void code_dpfunc(char *f) | |
| 2215 { | |
| 2216 if (max_func_iargs<16) max_func_iargs=16; | |
| 2217 printf("\tjal %s\n",f); | |
| 2218 } | |
| 2219 | |
| 130 | 2220 void |
| 138 | 2221 code_cmp_dregister(int e2,int d) |
| 130 | 2222 { |
| 149 | 2223 char *frn,*grn; |
| 2224 int greg; | |
| 2225 | |
| 2226 if (d) { | |
| 2227 printf("\tli.d $6,%g\n",0.0); | |
| 2228 code_save_stacks(); | |
| 2229 move_dreg(4+DREG_OFFSET,freg); | |
| 153 | 2230 code_dpfunc("dpcmp"); |
| 2231 if (max_func_iargs<16) max_func_iargs=16; | |
| 149 | 2232 set_dreg(RET_DREGISTER,0); |
| 2233 return; | |
| 2234 } else { | |
| 2235 grn = register_name(greg = get_dregister(d)); | |
| 2236 frn = register_name(e2); | |
| 2237 printf("\tli.s %s,%g\n",grn,0.0); | |
| 2238 printf("\tc.eq.s %s,%s\n",grn,frn); | |
| 2239 free_register(greg); | |
| 2240 return; | |
| 2241 } | |
| 130 | 2242 } |
| 2243 | |
| 2244 void | |
| 138 | 2245 code_dregister(int e2,int freg,int d) |
| 130 | 2246 { |
| 141 | 2247 if (freg!=e2) { |
| 149 | 2248 if (d) { |
| 2249 if (!is_double_reg(e2)) error(-1); | |
| 2250 move_dreg(freg,e2); | |
| 2251 } else { | |
| 2252 if (!is_float_reg(e2)) error(-1); | |
| 2253 printf("\tfmr %s,%s\n",fregister_name(freg),fregister_name(e2)); | |
| 2254 } | |
| 141 | 2255 } |
| 130 | 2256 } |
| 2257 | |
| 2258 void code_dassign_gvar(int e2,int freg,int d) | |
| 2259 { | |
| 149 | 2260 NMTBL *n = (NMTBL*)cadr(e2); |
| 2261 if (d) { | |
| 2262 if (!is_double_reg(freg)) error(-1); | |
| 2263 printf("\tsw %s,0(%s)\n",dregister_name0(freg),n->nm); | |
| 2264 printf("\tsw %s,0(%s)\n",dregister_name1(freg),n->nm); | |
| 2265 } else { | |
| 2266 printf("\ts.s %s,0(%s)\n",fregister_name(freg),n->nm); | |
| 2267 } | |
| 130 | 2268 } |
| 2269 | |
| 2270 void code_dassign_lvar(int e2,int freg,int d) | |
| 2271 { | |
| 149 | 2272 if (d) { |
| 2273 if (!is_double_reg(freg)) error(-1); | |
| 2274 printf("\tsw %s,",dregister_name0(freg)); | |
| 2275 lvar(e2); | |
| 2276 printf("\tsw %s,",dregister_name1(freg)); | |
| 2277 e2 += size_of_double/2; | |
| 2278 } else { | |
| 2279 printf("\ts.s %s,",fregister_name(freg)); | |
| 2280 } | |
| 130 | 2281 lvar(e2); |
| 2282 } | |
| 2283 | |
| 2284 void code_dassign(int e2,int freg,int d) | |
| 2285 { | |
| 149 | 2286 if (d) { |
| 2287 if (!is_double_reg(freg)) error(-1); | |
| 2288 printf("\tsw %s,0(%s)\n",dregister_name0(freg),register_name(e2)); | |
| 2289 printf("\tsw %s,4(%s)\n",dregister_name1(freg),register_name(e2)); | |
| 2290 } else { | |
| 2291 printf("\ts.s %s,0(%s)\n",fregister_name(freg),register_name(e2)); | |
| 2292 } | |
| 130 | 2293 } |
| 2294 | |
| 2295 void | |
| 138 | 2296 code_dassign_dregister(int e2,int d,int freg) { |
| 149 | 2297 /* これってさ、code_dregister と同じ? */ |
| 141 | 2298 if (e2!=freg) { |
| 149 | 2299 if (d) { |
| 2300 if (!is_double_reg(freg)) error(-1); | |
| 2301 move_dreg(freg,e2); | |
| 2302 } else { | |
| 2303 printf("\tmov.s %s,%s\n",fregister_name(e2),fregister_name(freg)); | |
| 2304 } | |
| 141 | 2305 } |
| 149 | 2306 |
| 130 | 2307 } |
| 2308 | |
|
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2309 static double d0 = 1.0; |
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2310 |
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2311 int |
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2312 code_d1(double d) |
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2313 { |
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2314 int *i = (int *)&d0; int *j = (int *)&d; |
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2315 return (i[1] == 0x3ff00000)?j[0]:j[1]; |
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2316 } |
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2317 |
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2318 int |
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2319 code_d2(double d) |
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2320 { |
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2321 int *i = (int *)&d0; int *j = (int *)&d; |
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2322 return (i[1] == 0x3ff00000)?j[1]:j[0]; |
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2323 } |
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2324 |
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2325 int |
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2326 code_f(double d) |
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2327 { |
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2328 float f = d; |
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2329 int *j = (int *)&f; |
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2330 return *j; |
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2331 } |
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|
2332 |
| 148 | 2333 void |
| 2334 code_dconst(int e2,int freg,int d) | |
| 130 | 2335 { |
| 138 | 2336 double value = dcadr(e2); |
| 149 | 2337 char *frn; |
| 2338 if (d) { | |
| 2339 printf("\tli.d %s,%g\n",dregister_name0(freg),value); | |
| 2340 } else { | |
| 2341 frn = fregister_name(freg); | |
| 2342 printf("\tli.s %s,%g\n",frn,value); | |
| 148 | 2343 } |
| 130 | 2344 } |
| 2345 | |
|
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|
2346 |
| 138 | 2347 void code_dneg(int freg,int d) |
| 130 | 2348 { |
| 149 | 2349 char *frn; |
| 2350 if (d) { | |
| 2351 code_save_stacks(); | |
| 2352 move_dreg(4+DREG_OFFSET,freg); | |
| 153 | 2353 code_dpfunc("dpneg"); |
| 149 | 2354 set_dreg(RET_DREGISTER,0); |
| 2355 } else { | |
| 2356 frn = fregister_name(freg); | |
| 2357 printf("\tfneg %s,%s\n",frn,frn); | |
| 2358 } | |
| 130 | 2359 } |
| 2360 | |
| 148 | 2361 void code_d2i(int freg0) |
| 130 | 2362 { |
| 149 | 2363 code_save_stacks(); |
| 2364 set_dreg(RET_DREGISTER,1); | |
| 153 | 2365 code_dpfunc("dptoli"); |
| 149 | 2366 set_creg(RET_REGISTER,0); |
| 130 | 2367 } |
| 2368 | |
| 148 | 2369 void code_i2d(int creg0) |
| 2370 { | |
| 141 | 2371 code_save_stacks(); |
| 148 | 2372 set_creg(RET_REGISTER,1); |
| 153 | 2373 code_dpfunc("litodp"); |
| 150 | 2374 set_dreg(RET_DREGISTER,0); |
| 141 | 2375 } |
|
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|
2376 |
| 148 | 2377 void code_d2u(int freg0) |
| 2378 { | |
| 141 | 2379 code_save_stacks(); |
| 149 | 2380 set_dreg(RET_DREGISTER,1); |
| 153 | 2381 code_dpfunc("dptoul"); |
| 148 | 2382 set_creg(RET_REGISTER,0); |
| 141 | 2383 } |
| 2384 | |
| 148 | 2385 void code_u2d(int creg0) |
| 2386 { | |
| 2387 code_save_stacks(); | |
| 2388 set_creg(RET_REGISTER,1); | |
| 153 | 2389 code_dpfunc("ultodp"); |
| 149 | 2390 set_dreg(RET_DREGISTER,0); |
| 141 | 2391 } |
| 2392 | |
| 149 | 2393 void code_d2f(int freg) { |
| 2394 code_save_stacks(); | |
| 2395 set_dreg(RET_DREGISTER,1); | |
| 153 | 2396 code_dpfunc("dptofp"); |
| 149 | 2397 set_freg(RET_FREGISTER,0); |
| 2398 } | |
| 2399 | |
| 2400 void code_f2d(int freg) { | |
| 2401 code_save_stacks(); | |
| 2402 set_freg(RET_FREGISTER,1); | |
| 153 | 2403 code_dpfunc("fptodp"); |
| 149 | 2404 set_dreg(RET_DREGISTER,0); |
| 2405 } | |
| 2406 | |
| 2407 void code_f2i(int freg) { | |
| 2408 printf("\ttrunc.w.s %s,%s,%s\n",register_name(freg), | |
| 2409 register_name(freg),register_name(ireg)); | |
| 2410 creg = ireg; | |
| 2411 } | |
| 2412 | |
| 2413 void code_f2u(int freg) { | |
| 2414 printf("\ttrunc.w.s %s,%s,%s\n",register_name(freg), | |
| 2415 register_name(freg),register_name(ireg)); | |
| 2416 creg = ireg; | |
| 2417 } | |
| 2418 | |
| 2419 void code_i2f(int creg0) { | |
| 2420 printf("\tcvt.s.w %s,%s\n",register_name(freg),register_name(freg)); | |
| 2421 creg = freg; | |
| 2422 } | |
| 2423 | |
| 2424 void code_u2f(int creg0) { | |
| 2425 printf("\tcvt.s.w %s,%s\n",register_name(freg),register_name(freg)); | |
| 2426 creg = freg; | |
| 2427 } | |
|
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|
2428 |
| 130 | 2429 void code_drgvar(int e2,int d,int freg) |
| 2430 { | |
| 151 | 2431 char *name = ((NMTBL*)cadr(e2))->nm; |
| 149 | 2432 if (d) { |
| 151 | 2433 printf("\tlw %s,%s\n",dregister_name0(freg),name); |
| 2434 printf("\tlw %s,%s\n",dregister_name1(freg),name); | |
| 149 | 2435 } else { |
| 151 | 2436 printf("\tl.s %s,%s\n",fregister_name(freg),name); |
| 149 | 2437 } |
| 130 | 2438 } |
| 2439 | |
| 2440 | |
| 2441 void code_drlvar(int e2,int d,int freg) | |
| 2442 { | |
| 149 | 2443 if (d) { |
| 152 | 2444 printf("\tlw %s,",dregister_name0(freg)); lvar(e2); |
| 2445 printf("\tlw %s,",dregister_name1(freg)); lvar(e2+size_of_double/2); | |
| 149 | 2446 } else { |
| 2447 printf("\tl.s %s,",fregister_name(freg)); lvar(e2); | |
| 2448 } | |
| 130 | 2449 } |
| 2450 | |
| 138 | 2451 void code_cmp_drgvar(int e2,int d) |
| 130 | 2452 { |
| 149 | 2453 char *frn; |
| 2454 int g; | |
| 2455 if (d) { | |
| 2456 code_save_stacks(); | |
| 2457 set_dreg(RET_DREGISTER,1); | |
| 2458 code_drgvar(e2,d,RET_DREGISTER+2); | |
| 153 | 2459 code_dpfunc("dcmp"); |
| 149 | 2460 } else { |
| 2461 frn=fregister_name(freg); | |
| 2462 g=get_dregister(d); | |
| 2463 code_drgvar(e2,d,g); | |
| 2464 printf("\tfc.eq.s %s,%s\n",frn,fregister_name(g)); | |
| 2465 free_register(g); | |
| 2466 } | |
| 130 | 2467 } |
| 2468 | |
| 138 | 2469 void code_cmp_drlvar(int e2,int d) |
| 130 | 2470 { |
| 2471 char *frn=fregister_name(freg); | |
| 149 | 2472 int g; |
| 2473 if (d) { | |
| 2474 code_save_stacks(); | |
| 2475 set_dreg(RET_DREGISTER,1); | |
| 2476 code_drgvar(e2,d,RET_DREGISTER+2); | |
| 153 | 2477 code_dpfunc("dcmp"); |
| 149 | 2478 } else { |
| 2479 g=get_dregister(d); | |
| 2480 code_drlvar(e2,d,g); | |
| 2481 printf("\tc.eq.s %s,%s\n",frn,fregister_name(g)); | |
| 2482 free_register(g); | |
| 2483 } | |
| 2484 } | |
| 130 | 2485 |
| 149 | 2486 static void |
| 2487 dtosop0(char *opn,int e1,int d,int cmp) | |
| 2488 { | |
| 2489 char *frn; | |
| 2490 char *grn; | |
| 2491 if (d) { | |
| 2492 code_save_stacks(); | |
| 2493 set_dreg(RET_DREGISTER,1); | |
| 2494 move_dreg(RET_DREGISTER+2,e1); | |
| 153 | 2495 code_dpfunc(opn); |
| 149 | 2496 } else { |
| 2497 frn=fregister_name(freg); | |
| 2498 grn=fregister_name(e1); | |
| 2499 if (cmp) { | |
| 2500 printf("\t%s %s,%s\n",opn,frn,grn); | |
| 2501 } else { | |
| 2502 printf("\t%s %s,%s,%s\n",opn,frn,frn,grn); | |
| 2503 } | |
| 2504 } | |
| 2505 free_register(e1); | |
| 141 | 2506 } |
| 2507 | |
| 149 | 2508 |
| 130 | 2509 void dtosop(int op,int e1) |
| 2510 { | |
| 2511 switch(op) { | |
| 149 | 2512 case FADD: dtosop0("fadd",e1,0,0); return; |
| 2513 case DADD: dtosop0("dpadd",e1,1,0); return; | |
| 2514 case FSUB: dtosop0("fadd",e1,0,0); return; | |
| 2515 case DSUB: dtosop0("dpsub",e1,1,0); return; | |
| 2516 case FDIV: dtosop0("fadd",e1,0,0); return; | |
| 2517 case DDIV: dtosop0("dpdiv",e1,1,0); return; | |
| 2518 case FMUL: dtosop0("fadd",e1,0,0); return; | |
| 2519 case DMUL: dtosop0("dpmul",e1,1,0); return; | |
| 141 | 2520 case DCMPGE: |
| 149 | 2521 case DCMP: dtosop0("dpcmp",e1,1,1); return; |
| 2522 case FCMPGE: dtosop0("c.le.s",e1,0,1); return; | |
| 2523 case FCMP: dtosop0("c.eq.s",e1,0,1); return; | |
|
136
069960078249
remove redundant funcall argument for prototyped code in PowerPC case.
kono
parents:
133
diff
changeset
|
2524 default: |
| 149 | 2525 error(-1); return; |
| 130 | 2526 } |
| 2527 } | |
| 2528 | |
| 2529 void | |
| 2530 code_dassop(int op,int d) { | |
| 2531 /* we have lvalue in creg, applied floating value is in freg */ | |
| 149 | 2532 char *frn; |
| 2533 int xreg; | |
| 130 | 2534 char *crn=register_name(creg); |
| 2535 | |
| 149 | 2536 if (d) { |
| 2537 xreg=emit_dpop(d); | |
| 2538 printf("\tlw %s,0(%s)\n",dregister_name0(freg),crn); | |
| 2539 printf("\tlw %s,%d(%s)\n",dregister_name1(freg),size_of_int,crn); | |
| 2540 dtosop(op,xreg); | |
| 2541 printf("\tsw %s,0(%s)\n",dregister_name0(freg),crn); | |
| 2542 printf("\tsw %s,%d(%s)\n",dregister_name1(freg),size_of_int,crn); | |
| 2543 emit_dpop_free(xreg,d); | |
| 2544 creg = dreg; | |
| 2545 } else { | |
| 2546 xreg=emit_dpop(d); | |
| 2547 frn=fregister_name(freg); | |
| 2548 crn=register_name(creg); | |
| 2549 | |
| 2550 printf("\tl.s %s,0(%s)\n",frn,crn); | |
| 2551 dtosop(op,xreg); | |
| 2552 printf("\ts.s %s,0(%s)\n",frn,crn); | |
| 2553 emit_dpop_free(xreg,d); | |
| 2554 creg = freg; | |
| 2555 } | |
| 130 | 2556 } |
| 2557 | |
| 219 | 2558 void |
| 2559 code_register_dassop(int reg,int op,int d) { | |
| 2560 error(-1); | |
| 2561 } | |
| 2562 | |
| 130 | 2563 |
| 2564 void | |
| 2565 code_dpreinc(int e1,int e2,int d,int reg) { | |
| 2566 char *frn; | |
| 2567 char *crn; | |
| 2568 int g; | |
| 149 | 2569 char *grn; |
| 130 | 2570 |
| 2571 g_expr(e2); | |
| 2572 | |
| 149 | 2573 if (d) { |
| 2574 crn=register_name(creg); | |
| 2575 frn=fregister_name(freg); | |
| 130 | 2576 |
| 149 | 2577 code_save_stacks(); |
| 2578 set_dreg(RET_DREGISTER,0); | |
| 2579 printf("\tlw $4,0(%s)\n",crn); | |
| 2580 printf("\tlw $5,%d(%s)\n",size_of_int,crn); | |
| 2581 printf("\tli.d $6,1.0\n"); | |
| 2582 if (caddr(e1)>0) | |
| 153 | 2583 code_dpfunc("dpadd"); |
| 149 | 2584 else |
| 153 | 2585 code_dpfunc("dpsub"); |
| 149 | 2586 printf("\tsw $2,0(%s)\n",crn); |
| 2587 printf("\tsw $3,%d(%s)\n",size_of_int,crn); | |
| 2588 creg = dreg; | |
| 2589 } else { | |
| 2590 crn=register_name(creg); | |
| 2591 frn=fregister_name(freg); | |
| 2592 grn=fregister_name(g=get_dregister(d)); | |
| 2593 | |
| 2594 printf("\tl.s %s,0(%s)\n",frn,crn); | |
| 2595 printf("\tli.s %s,1.0\n",grn); | |
| 2596 if (caddr(e1)>0) | |
| 2597 printf("\tfadd %s,%s,%s\n",frn,frn,grn); | |
| 2598 else | |
| 2599 printf("\tfsub %s,%s,%s\n",frn,frn,grn); | |
| 2600 printf("\ts.s %s,0(%s)\n",frn,crn); | |
| 2601 free_register(g); | |
| 2602 creg = freg; | |
| 2603 } | |
| 130 | 2604 } |
| 2605 | |
| 2606 void | |
| 2607 code_dpostinc(int e1,int e2,int d,int reg) { | |
| 2608 char *frn; | |
| 2609 char *crn; | |
| 2610 int g; | |
| 149 | 2611 char *grn; |
| 130 | 2612 |
| 2613 g_expr(e2); | |
| 2614 | |
| 149 | 2615 if (d) { |
| 2616 crn=register_name(creg); | |
| 2617 g = get_dregister(d); | |
| 2618 set_dreg(RET_DREGISTER,0); | |
| 2619 printf("\tlw $4,0(%s)\n",crn); | |
| 2620 printf("\tlw $5,%d(%s)\n",size_of_int,crn); | |
| 2621 move_dreg(g,4+DREG_OFFSET); | |
| 2622 printf("\tli.d $6,1.0\n"); | |
| 2623 if (caddr(e1)>0) | |
| 153 | 2624 code_dpfunc("dpadd"); |
| 149 | 2625 else |
| 153 | 2626 code_dpfunc("dpsub"); |
| 149 | 2627 set_dreg(RET_DREGISTER,0); |
| 2628 printf("\tsw $2,0(%s)\n",crn); | |
| 2629 printf("\tsw $3,%d(%s)\n",size_of_int,crn); | |
| 152 | 2630 free_register(dreg); |
| 149 | 2631 set_dreg(g,0); |
| 2632 creg = g; | |
| 2633 } else { | |
| 2634 crn=register_name(creg); | |
| 2635 frn=fregister_name(freg); | |
| 2636 grn=fregister_name(g=get_dregister(d)); | |
| 130 | 2637 |
| 149 | 2638 printf("\tl.s %s,0(%s)\n",frn,crn); |
| 2639 printf("\tli.s %s,1.0\n",grn); | |
| 2640 if (caddr(e1)>0) | |
| 2641 printf("\tfadd %s,%s,%s\n",frn,frn,grn); | |
| 2642 else | |
| 2643 printf("\tfsub %s,%s,%s\n",frn,frn,grn); | |
| 2644 printf("\ts.s %s,0(%s)\n",grn,crn); | |
| 2645 free_register(g); | |
| 2646 creg = freg; | |
| 2647 } | |
| 2648 | |
| 130 | 2649 } |
| 2650 | |
| 2651 void | |
| 2652 drexpr(int e1, int e2,int l1, int op) | |
| 2653 { | |
| 149 | 2654 g_expr(list3(((op==FOP+EQ||op==FOP+NEQ)?DCMP:FCMPGE),e1,e2)); |
| 130 | 2655 switch(op) { |
| 149 | 2656 case DOP+GE: |
| 2657 printf("\tbgez\tL_%d\n",l1); | |
| 2658 break; | |
| 2659 case DOP+GT: | |
| 2660 printf("\tbltz\tL_%d\n",l1); | |
| 2661 break; | |
| 2662 case DOP+EQ: | |
| 2663 printf("\tbeq\tL_%d\n",l1); | |
| 2664 break; | |
| 2665 case DOP+NEQ: | |
| 2666 printf("\tbne\tL_%d\n",l1); | |
| 2667 break; | |
| 2668 case FOP+GE: | |
| 2669 printf("\tbc1tl\tL_%d\n",l1); | |
| 2670 break; | |
| 2671 case FOP+GT: | |
| 2672 printf("\tbc1tl\tL_%d\n",l1); | |
| 2673 break; | |
| 2674 case FOP+EQ: | |
| 2675 printf("\tbc1f\tL_%d\n",l1); | |
| 2676 break; | |
| 2677 case FOP+NEQ: | |
| 2678 printf("\tbc1f\tL_%d\n",l1); | |
| 2679 break; | |
| 130 | 2680 } |
| 2681 } | |
| 2682 | |
| 138 | 2683 int emit_dpop(int d) |
| 130 | 2684 { |
| 2685 int xreg,reg; | |
| 151 | 2686 if (d) |
| 2687 xreg=pop_dregister(); | |
| 2688 else | |
| 2689 xreg=pop_fregister(); | |
| 130 | 2690 if (xreg<= -REG_LVAR_OFFSET) { |
| 138 | 2691 reg = get_dregister(d); |
| 149 | 2692 code_drlvar(REG_LVAR_OFFSET+xreg,d,reg); |
| 130 | 2693 free_lvar(REG_LVAR_OFFSET+xreg); |
| 205 | 2694 xreg=reg; |
| 130 | 2695 } |
| 2696 return xreg; | |
| 2697 } | |
| 2698 | |
| 138 | 2699 void emit_dpop_free(int e1,int d) |
| 130 | 2700 { |
| 148 | 2701 free_register(e1); |
| 130 | 2702 } |
| 2703 | |
| 133 | 2704 void emit_dpush(int d) |
| 130 | 2705 { |
| 2706 int new_reg; | |
| 2707 if (freg_sp>MAX_MAX) error(-1); | |
| 149 | 2708 new_reg = get_dregister(d); |
| 151 | 2709 if (d) { |
| 2710 dreg_stack[dreg_sp++] = dreg; /* push するかわりにレジスタを使う */ | |
| 2711 creg = dreg = new_reg; | |
| 2712 } else { | |
| 2713 freg_stack[freg_sp++] = freg; /* push するかわりにレジスタを使う */ | |
| 2714 creg = freg = new_reg; | |
| 2715 } | |
| 130 | 2716 } |
| 2717 | |
| 195 | 2718 #endif |
| 2719 | |
| 130 | 2720 void |
| 2721 code_save_stacks() | |
| 2722 { | |
| 2723 int i,reg; | |
| 2724 for(i=0;i<reg_sp;i++) { | |
| 2725 if ((reg=reg_stack[i])>=0) { | |
| 2726 code_assign_lvar( | |
| 2727 (reg_stack[i]=new_lvar(size_of_int)),reg,0); | |
| 2728 reg_stack[i]= reg_stack[i]-REG_LVAR_OFFSET; | |
| 2729 } | |
| 2730 } | |
| 195 | 2731 #if FLOAT_CODE |
| 149 | 2732 for(i=0;i<dreg_sp;i++) { |
| 2733 if ((reg=dreg_stack[i])>=0) { | |
| 2734 code_dassign_lvar( | |
| 2735 (dreg_stack[i]=new_lvar(size_of_double)),reg,1); | |
| 2736 dreg_stack[i]= dreg_stack[i]-REG_LVAR_OFFSET; | |
| 2737 } | |
| 2738 } | |
| 130 | 2739 for(i=0;i<freg_sp;i++) { |
| 2740 if ((reg=freg_stack[i])>=0) { | |
| 2741 code_dassign_lvar( | |
| 149 | 2742 (freg_stack[i]=new_lvar(size_of_float)),reg,0); |
| 130 | 2743 freg_stack[i]= freg_stack[i]-REG_LVAR_OFFSET; |
| 2744 } | |
| 2745 } | |
| 195 | 2746 #endif |
| 130 | 2747 } |
| 2748 | |
| 2749 void | |
| 2750 emit_lib(char *p[]) | |
| 2751 { | |
| 2752 while(*p) { | |
| 2753 printf("%s\n",*p++); | |
| 2754 } | |
| 2755 } | |
| 2756 | |
| 2757 void | |
| 2758 code_closing() | |
| 2759 { | |
| 2760 global_table(); | |
| 2761 /* printf("\t.ident \"Micro-C compiled\"\n"); */ | |
| 149 | 2762 fclose(asi); |
| 130 | 2763 } |
| 2764 | |
| 195 | 2765 |
| 2766 #if LONGLONG_CODE | |
| 2767 | |
| 2768 | |
| 2769 /* 64bit int part */ | |
| 2770 | |
| 2771 void lrexpr(int e1, int e2,int l1, int op) | |
| 2772 { | |
| 2773 } | |
| 2774 | |
| 2775 int lpop_register() | |
| 2776 { | |
| 2777 return 0; | |
| 2778 } | |
| 2779 | |
| 2780 int emit_lpop() | |
| 2781 { | |
| 2782 return 0; | |
| 2783 } | |
| 2784 | |
| 2785 void code_lregister(int e2,int reg) | |
| 2786 { | |
| 2787 | |
| 2788 } | |
| 2789 | |
| 2790 void code_cmp_lregister(int reg) | |
| 2791 { | |
| 2792 | |
| 2793 } | |
| 2794 | |
| 2795 void code_cmp_lrgvar(int e1,int e2) | |
| 2796 { | |
| 2797 | |
| 2798 } | |
| 2799 | |
| 2800 void code_cmp_lrlvar(int e1,int e2) | |
| 2801 { | |
| 2802 | |
| 2803 } | |
| 2804 | |
| 2805 void code_lassign(int e1,int e2) | |
| 2806 { | |
| 2807 | |
| 2808 } | |
| 2809 | |
| 2810 void code_lassign_gvar(int e1,int e2) | |
| 2811 { | |
| 2812 | |
| 2813 } | |
| 2814 | |
| 2815 void code_lassign_lvar(int e1,int e2) | |
| 2816 { | |
| 2817 | |
| 2818 } | |
| 2819 | |
| 2820 void code_lassign_lregister(int e2,int reg) | |
| 2821 { | |
| 2822 | |
| 2823 } | |
| 2824 | |
| 2825 void code_lconst(int e1,int e2) | |
| 2826 { | |
| 2827 | |
| 2828 } | |
| 2829 | |
| 212 | 2830 void code_lneg(int e1) |
| 195 | 2831 { |
| 2832 | |
| 2833 } | |
| 2834 | |
| 2835 void code_lrgvar(int e1,int e2) | |
| 2836 { | |
| 2837 | |
| 2838 } | |
| 2839 | |
| 2840 void code_lrlvar(int e1,int e2) | |
| 2841 { | |
| 2842 | |
| 2843 } | |
| 2844 | |
| 2845 void ltosop(int e1,int e2) | |
| 2846 { | |
| 2847 | |
| 2848 } | |
| 2849 | |
| 213 | 2850 int code_lconst_op_p(int op,int e) {return 0;} |
| 2851 void loprtc(int op,int e) {} | |
| 2852 | |
| 195 | 2853 void emit_lpop_free(int e1) |
| 2854 { | |
| 2855 | |
| 2856 } | |
| 2857 | |
| 2858 void emit_lpush() | |
| 2859 { | |
| 2860 | |
| 2861 } | |
| 2862 | |
| 2863 void code_i2ll(int creg) | |
| 2864 { | |
| 2865 | |
| 2866 } | |
| 2867 | |
| 2868 void code_i2ull(int creg) | |
| 2869 { | |
| 2870 | |
| 2871 } | |
| 2872 | |
| 2873 void code_u2ll(int creg) | |
| 2874 { | |
| 2875 | |
| 2876 } | |
| 2877 | |
| 2878 void code_u2ull(int creg) | |
| 2879 { | |
| 2880 | |
| 2881 } | |
| 2882 | |
| 2883 void code_ll2i(int creg) | |
| 2884 { | |
| 2885 | |
| 2886 } | |
| 2887 | |
| 2888 void code_ll2u(int creg) | |
| 2889 { | |
| 2890 | |
| 2891 } | |
| 2892 | |
| 2893 void code_ull2i(int creg) | |
| 2894 { | |
| 2895 | |
| 2896 } | |
| 2897 | |
| 2898 void code_ull2u(int creg) | |
| 2899 { | |
| 2900 | |
| 2901 } | |
| 2902 | |
| 2903 #if FLOAT_CODE | |
| 2904 void code_d2ll(int creg) | |
| 2905 { | |
| 2906 | |
| 2907 } | |
| 2908 | |
| 2909 void code_d2ull(int creg) | |
| 2910 { | |
| 2911 | |
| 2912 } | |
| 2913 | |
| 2914 void code_f2ll(int creg) | |
| 2915 { | |
| 2916 | |
| 2917 } | |
| 2918 | |
| 2919 void code_f2ull(int creg) | |
| 2920 { | |
| 2921 | |
| 2922 } | |
| 2923 | |
| 2924 void code_ll2d(int creg) | |
| 2925 { | |
| 2926 | |
| 2927 } | |
| 2928 | |
| 2929 void code_ll2f(int creg) | |
| 2930 { | |
| 2931 | |
| 2932 } | |
| 2933 | |
| 2934 void code_ull2d(int creg) | |
| 2935 { | |
| 2936 | |
| 2937 } | |
| 2938 | |
| 2939 void code_ull2f(int creg) | |
| 2940 { | |
| 2941 | |
| 2942 } | |
| 2943 | |
| 2944 void code_ull2ll(int creg) | |
| 2945 { | |
| 2946 | |
| 2947 } | |
| 2948 | |
| 2949 void code_ull2ull(int creg) | |
| 2950 { | |
| 2951 | |
| 2952 } | |
| 2953 | |
| 2954 #endif | |
| 2955 | |
| 2956 | |
| 2957 void code_lpreinc(int e1,int e2,int reg) | |
| 2958 { | |
| 2959 | |
| 2960 } | |
| 2961 | |
| 2962 void code_lpostinc(int e1,int e2,int reg) | |
| 2963 { | |
| 2964 | |
| 2965 } | |
| 2966 | |
| 2967 void code_lassop(int op) | |
| 2968 { | |
| 2969 | |
| 2970 } | |
| 2971 | |
| 219 | 2972 void |
| 2973 code_register_lassop(int reg,int op) { | |
| 2974 } | |
| 2975 | |
| 2976 | |
| 195 | 2977 |
| 2978 #endif | |
| 2979 | |
| 130 | 2980 /* end */ |
| 2981 |