| 1 | /* |
| 2 | * Copyright (C) 2012-2023 Free Software Foundation, Inc. |
| 3 | * |
| 4 | * This file is part of GNU lightning. |
| 5 | * |
| 6 | * GNU lightning is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU Lesser General Public License as published |
| 8 | * by the Free Software Foundation; either version 3, or (at your option) |
| 9 | * any later version. |
| 10 | * |
| 11 | * GNU lightning is distributed in the hope that it will be useful, but |
| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 13 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
| 14 | * License for more details. |
| 15 | * |
| 16 | * Authors: |
| 17 | * Paulo Cesar Pereira de Andrade |
| 18 | */ |
| 19 | |
| 20 | #ifndef _jit_private_h |
| 21 | #define _jit_private_h |
| 22 | |
| 23 | #if HAVE_CONFIG_H |
| 24 | # include "config.h" |
| 25 | #endif |
| 26 | |
| 27 | #include <assert.h> |
| 28 | #include <limits.h> |
| 29 | #include <stdio.h> |
| 30 | |
| 31 | #ifdef STDC_HEADERS |
| 32 | # include <stddef.h> |
| 33 | #else |
| 34 | # if !defined(offsetof) |
| 35 | # define offsetof(type, field) ((char *)&((type *)0)->field - (char *)0) |
| 36 | # endif |
| 37 | #endif |
| 38 | |
| 39 | #if defined(__GNUC__) |
| 40 | # define maybe_unused __attribute__ ((unused)) |
| 41 | # define unlikely(exprn) __builtin_expect(!!(exprn), 0) |
| 42 | # define likely(exprn) __builtin_expect(!!(exprn), 1) |
| 43 | # if (__GNUC__ >= 4) |
| 44 | # define PUBLIC __attribute__ ((visibility("default"))) |
| 45 | # define HIDDEN __attribute__ ((visibility("hidden"))) |
| 46 | # else |
| 47 | # define PUBLIC /**/ |
| 48 | # define HIDDEN /**/ |
| 49 | # endif |
| 50 | #else |
| 51 | # define maybe_unused /**/ |
| 52 | # define unlikely(exprn) exprn |
| 53 | # define likely(exprn) exprn |
| 54 | # define PUBLIC /**/ |
| 55 | # define HIDDEN /**/ |
| 56 | #endif |
| 57 | |
| 58 | #if PACKED_STACK || STRONG_TYPE_CHECKING |
| 59 | # define assert_arg_type(code, expect) \ |
| 60 | do assert((code) == (expect)); while (0) |
| 61 | # define assert_putarg_type(code, expect) \ |
| 62 | do \ |
| 63 | assert((((code) - jit_code_putargr_c) >> 2) == \ |
| 64 | ((expect) - jit_code_arg_c)); \ |
| 65 | while (0) |
| 66 | #else |
| 67 | # define assert_arg_type(code, expect) \ |
| 68 | do assert((int)(code) == (int)(expect) || \ |
| 69 | (code) == jit_code_arg); while (0) |
| 70 | # define assert_putarg_type(code, expect) \ |
| 71 | do \ |
| 72 | assert(((((code) - jit_code_putargr_c) >> 2) == \ |
| 73 | ((expect) - jit_code_arg_c)) || \ |
| 74 | ((code) == jit_code_arg)); \ |
| 75 | while (0) |
| 76 | #endif |
| 77 | |
| 78 | #define rc(value) jit_class_##value |
| 79 | #define rn(reg) (jit_regno(_rvs[jit_regno(reg)].spec)) |
| 80 | |
| 81 | #if defined(__i386__) || defined(__x86_64__) |
| 82 | # define JIT_SP _RSP |
| 83 | # define JIT_RET _RAX |
| 84 | # if __X32 |
| 85 | # define JIT_FRET _ST0 |
| 86 | typedef jit_uint32_t jit_regset_t; |
| 87 | # else |
| 88 | # if __CYGWIN__ || _WIN32 |
| 89 | # define JIT_RA0 _RCX |
| 90 | # else |
| 91 | # define JIT_RA0 _RDI |
| 92 | # endif |
| 93 | # define JIT_FA0 _XMM0 |
| 94 | # define JIT_FRET _XMM0 |
| 95 | typedef jit_uint64_t jit_regset_t; |
| 96 | # endif |
| 97 | #elif defined(__mips__) |
| 98 | # define JIT_RA0 _A0 |
| 99 | # define JIT_FA0 _F12 |
| 100 | # define JIT_SP _SP |
| 101 | # define JIT_RET _V0 |
| 102 | # define JIT_FRET _F0 |
| 103 | typedef jit_uint64_t jit_regset_t; |
| 104 | #elif defined(__arm__) |
| 105 | # define JIT_RA0 _R0 |
| 106 | # define JIT_FA0 _D0 |
| 107 | # define JIT_SP _R13 |
| 108 | # define JIT_RET _R0 |
| 109 | # if defined(__ARM_PCS_VFP) |
| 110 | # define JIT_FRET _D0 |
| 111 | # else |
| 112 | # define JIT_FRET _R0 |
| 113 | # endif |
| 114 | typedef jit_uint64_t jit_regset_t; |
| 115 | #elif defined(__powerpc__) |
| 116 | # define JIT_RA0 _R3 |
| 117 | # define JIT_FA0 _F1 |
| 118 | # define JIT_SP _R1 |
| 119 | # define JIT_RET _R3 |
| 120 | # define JIT_FRET _F1 |
| 121 | typedef jit_uint64_t jit_regset_t; |
| 122 | #elif defined(__sparc__) |
| 123 | # define JIT_SP _SP |
| 124 | # define JIT_RET _I0 |
| 125 | # define JIT_FRET _F0 |
| 126 | # if __WORDSIZE == 32 |
| 127 | typedef jit_uint64_t jit_regset_t; |
| 128 | # else |
| 129 | typedef struct { |
| 130 | jit_uint64_t rl; |
| 131 | jit_uint64_t rh; |
| 132 | } jit_regset_t; |
| 133 | # endif |
| 134 | #elif defined(__ia64__) |
| 135 | # define JIT_SP _R12 |
| 136 | # define JIT_RET _R8 |
| 137 | # define JIT_FRET _F8 |
| 138 | typedef struct { |
| 139 | jit_uint64_t rl; |
| 140 | jit_uint64_t rh; |
| 141 | jit_uint64_t fl; |
| 142 | jit_uint64_t fh; |
| 143 | } jit_regset_t; |
| 144 | #elif defined(__hppa__) |
| 145 | # define JIT_SP _R30 |
| 146 | # define JIT_RET _R28 |
| 147 | # define JIT_FRET _F4 |
| 148 | typedef jit_uint64_t jit_regset_t; |
| 149 | #elif defined(__aarch64__) |
| 150 | # define JIT_RA0 _R0 |
| 151 | # define JIT_FA0 _V0 |
| 152 | # define JIT_SP _SP |
| 153 | # define JIT_RET _R0 |
| 154 | # define JIT_FRET _V0 |
| 155 | typedef jit_uint64_t jit_regset_t; |
| 156 | #elif defined(__s390__) || defined(__s390x__) |
| 157 | # define JIT_SP _R15 |
| 158 | # define JIT_RET _R2 |
| 159 | # define JIT_FRET _F0 |
| 160 | typedef jit_uint32_t jit_regset_t; |
| 161 | #elif defined(__alpha__) |
| 162 | # define JIT_SP _SP |
| 163 | # define JIT_RET _V0 |
| 164 | # define JIT_FRET _F0 |
| 165 | typedef jit_uint64_t jit_regset_t; |
| 166 | #elif defined(__riscv) |
| 167 | # define JIT_RA0 _A0 |
| 168 | # define JIT_FA0 _FA0 |
| 169 | # define JIT_SP _SP |
| 170 | # define JIT_RET _A0 |
| 171 | # define JIT_FRET _FA0 |
| 172 | typedef jit_uint64_t jit_regset_t; |
| 173 | #elif defined(__loongarch__) |
| 174 | # define JIT_RA0 _A0 |
| 175 | # define JIT_FA0 _FA0 |
| 176 | # define JIT_SP _SP |
| 177 | # define JIT_RET _A0 |
| 178 | # define JIT_FRET _FA0 |
| 179 | typedef jit_uint64_t jit_regset_t; |
| 180 | #endif |
| 181 | |
| 182 | #define jit_data(u,v,w) _jit_data(_jit,u,v,w) |
| 183 | extern jit_node_t *_jit_data(jit_state_t*, const void*, |
| 184 | jit_word_t, jit_int32_t); |
| 185 | |
| 186 | #define jit_size(vector) (sizeof(vector) / sizeof((vector)[0])) |
| 187 | |
| 188 | #define jit_reg_free_p(regno) \ |
| 189 | (!jit_regset_tstbit(&_jitc->reglive, regno) && \ |
| 190 | !jit_regset_tstbit(&_jitc->regarg, regno) && \ |
| 191 | !jit_regset_tstbit(&_jitc->regsav, regno)) |
| 192 | |
| 193 | #define jit_reg_free_if_spill_p(regno) \ |
| 194 | (!jit_regset_tstbit(&_jitc->regarg, regno) && \ |
| 195 | !jit_regset_tstbit(&_jitc->regsav, regno)) |
| 196 | |
| 197 | #define jit_code_inc_synth(code) \ |
| 198 | do { \ |
| 199 | (void)jit_new_node(code); \ |
| 200 | jit_synth_inc(); \ |
| 201 | } while (0) |
| 202 | #define jit_inc_synth(name) \ |
| 203 | jit_code_inc_synth(jit_code_##name) |
| 204 | #define jit_code_inc_synth_w(code, u) \ |
| 205 | do { \ |
| 206 | (void)jit_new_node_w(code, u); \ |
| 207 | jit_synth_inc(); \ |
| 208 | } while (0) |
| 209 | #define jit_inc_synth_w(name, u) \ |
| 210 | jit_code_inc_synth_w(jit_code_##name, u) |
| 211 | #define jit_code_inc_synth_f(code, u) \ |
| 212 | do { \ |
| 213 | (void)jit_new_node_f(code, u); \ |
| 214 | jit_synth_inc(); \ |
| 215 | } while (0) |
| 216 | #define jit_inc_synth_f(name, u) \ |
| 217 | jit_code_inc_synth_f(jit_code_##name, u) |
| 218 | #define jit_code_inc_synth_d(code, u) \ |
| 219 | do { \ |
| 220 | (void)jit_new_node_d(code, u); \ |
| 221 | jit_synth_inc(); \ |
| 222 | } while (0) |
| 223 | #define jit_inc_synth_d(name, u) \ |
| 224 | jit_code_inc_synth_d(jit_code_##name, u) |
| 225 | #define jit_code_inc_synth_ww(code, u, v) \ |
| 226 | do { \ |
| 227 | (void)jit_new_node_ww(code, u, v); \ |
| 228 | jit_synth_inc(); \ |
| 229 | } while (0) |
| 230 | #define jit_inc_synth_ww(name, u, v) \ |
| 231 | jit_code_inc_synth_ww(jit_code_##name, u, v) |
| 232 | #define jit_code_inc_synth_wp(code, u, v) \ |
| 233 | do { \ |
| 234 | (void)jit_new_node_wp(code, u, v); \ |
| 235 | jit_synth_inc(); \ |
| 236 | } while (0) |
| 237 | #define jit_inc_synth_wp(name, u, v) \ |
| 238 | jit_code_inc_synth_wp(jit_code_##name, u, v) |
| 239 | #define jit_code_inc_synth_fp(code, u, v) \ |
| 240 | do { \ |
| 241 | (void)jit_new_node_fp(code, u, v); \ |
| 242 | jit_synth_inc(); \ |
| 243 | } while (0) |
| 244 | #define jit_inc_synth_fp(name, u, v) \ |
| 245 | jit_code_inc_synth_fp(jit_code_##name, u, v) |
| 246 | #define jit_code_inc_synth_dp(code, u, v) \ |
| 247 | do { \ |
| 248 | (void)jit_new_node_dp(code, u, v); \ |
| 249 | jit_synth_inc(); \ |
| 250 | } while (0) |
| 251 | #define jit_inc_synth_dp(name, u, v) \ |
| 252 | jit_code_inc_synth_dp(jit_code_##name, u, v) |
| 253 | #define jit_dec_synth() jit_synth_dec() |
| 254 | |
| 255 | #define jit_link_alist(node) \ |
| 256 | do { \ |
| 257 | node->link = _jitc->function->alist; \ |
| 258 | _jitc->function->alist = node; \ |
| 259 | } while (0) |
| 260 | #define jit_check_frame() \ |
| 261 | do { \ |
| 262 | if (!_jitc->function->need_frame) { \ |
| 263 | _jitc->again = 1; \ |
| 264 | _jitc->function->need_frame = 1; \ |
| 265 | } \ |
| 266 | } while (0) |
| 267 | #define jit_diffsize() (stack_framesize - _jitc->framesize) |
| 268 | #define jit_framesize() (stack_framesize - jit_diffsize()) |
| 269 | #define jit_selfsize() (_jitc->function->self.size - jit_diffsize()) |
| 270 | |
| 271 | #define jit_link_prolog() \ |
| 272 | do { \ |
| 273 | _jitc->tail->link = _jitc->function->prolog->link; \ |
| 274 | _jitc->function->prolog->link = _jitc->tail; \ |
| 275 | } while (0) |
| 276 | #define jit_link_prepare() \ |
| 277 | do { \ |
| 278 | _jitc->tail->link = _jitc->prepare->link; \ |
| 279 | _jitc->prepare->link = _jitc->tail; \ |
| 280 | } while (0) |
| 281 | #define jit_link_reverse(where) \ |
| 282 | do { \ |
| 283 | jit_node_t *tmp, *tail = 0; \ |
| 284 | while (where) { \ |
| 285 | tmp = (where)->link; \ |
| 286 | (where)->link = tail; \ |
| 287 | tail = where; \ |
| 288 | where = tmp; \ |
| 289 | } \ |
| 290 | where = tail; \ |
| 291 | } while (0); |
| 292 | |
| 293 | /* |
| 294 | * Private jit_class bitmasks |
| 295 | */ |
| 296 | #define jit_class_named 0x00400000 /* hit must be the named reg */ |
| 297 | #define jit_class_nospill 0x00800000 /* hint to fail if need spill */ |
| 298 | #define jit_class_sft 0x01000000 /* not a hardware register */ |
| 299 | #define jit_class_rg8 0x04000000 /* x86 8 bits */ |
| 300 | #define jit_class_xpr 0x80000000 /* float / vector */ |
| 301 | /* Used on sparc64 where %f0-%f31 can be encode for single float |
| 302 | * but %f32 to %f62 only as double precision */ |
| 303 | #define jit_class_sng 0x00010000 /* Single precision float */ |
| 304 | #define jit_class_dbl 0x00020000 /* Only double precision float */ |
| 305 | #define jit_regno_patch 0x00008000 /* this is a register |
| 306 | * returned by a "user" call |
| 307 | * to jit_get_reg() */ |
| 308 | |
| 309 | #define jit_call_default 0 |
| 310 | #define jit_call_varargs 1 |
| 311 | |
| 312 | #define jit_kind_register 1 |
| 313 | #define jit_kind_code 2 |
| 314 | #define jit_kind_word 3 |
| 315 | #define jit_kind_float32 4 |
| 316 | #define jit_kind_float64 5 |
| 317 | |
| 318 | #define jit_cc_a0_reg 0x00000001 /* arg0 is a register */ |
| 319 | #define jit_cc_a0_chg 0x00000002 /* arg0 is modified */ |
| 320 | #define jit_cc_a0_jmp 0x00000004 /* arg0 is a jump target */ |
| 321 | #define jit_cc_a0_rlh 0x00000008 /* arg0 is a register pair */ |
| 322 | #define jit_cc_a0_int 0x00000010 /* arg0 is immediate word */ |
| 323 | #define jit_cc_a0_flt 0x00000020 /* arg0 is immediate float */ |
| 324 | #define jit_cc_a0_dbl 0x00000040 /* arg0 is immediate double */ |
| 325 | #define jit_cc_a0_arg 0x00000080 /* arg1 is an argument int id */ |
| 326 | #define jit_cc_a0_cnd 0x00000100 /* arg1 is a conditinally set register */ |
| 327 | #define jit_cc_a1_reg 0x00000200 /* arg1 is a register */ |
| 328 | #define jit_cc_a1_chg 0x00000400 /* arg1 is modified */ |
| 329 | #define jit_cc_a1_int 0x00001000 /* arg1 is immediate word */ |
| 330 | #define jit_cc_a1_flt 0x00002000 /* arg1 is immediate float */ |
| 331 | #define jit_cc_a1_dbl 0x00004000 /* arg1 is immediate double */ |
| 332 | #define jit_cc_a1_arg 0x00008000 /* arg1 is an argument node */ |
| 333 | #define jit_cc_a2_reg 0x00010000 /* arg2 is a register */ |
| 334 | #define jit_cc_a2_chg 0x00020000 /* arg2 is modified */ |
| 335 | #define jit_cc_a2_int 0x00100000 /* arg2 is immediate word */ |
| 336 | #define jit_cc_a2_flt 0x00200000 /* arg2 is immediate float */ |
| 337 | #define jit_cc_a2_dbl 0x00400000 /* arg2 is immediate double */ |
| 338 | #define jit_cc_a2_rlh 0x00800000 /* arg2 is a register pair */ |
| 339 | |
| 340 | #if __ia64__ || (__sparc__ && __WORDSIZE == 64) |
| 341 | extern void |
| 342 | jit_regset_com(jit_regset_t*, jit_regset_t*); |
| 343 | |
| 344 | extern void |
| 345 | jit_regset_and(jit_regset_t*, jit_regset_t*, jit_regset_t*); |
| 346 | |
| 347 | extern void |
| 348 | jit_regset_ior(jit_regset_t*, jit_regset_t*, jit_regset_t*); |
| 349 | |
| 350 | extern void |
| 351 | jit_regset_xor(jit_regset_t*, jit_regset_t*, jit_regset_t*); |
| 352 | |
| 353 | extern void |
| 354 | jit_regset_set(jit_regset_t*, jit_regset_t*); |
| 355 | |
| 356 | extern void |
| 357 | jit_regset_set_mask(jit_regset_t*, jit_int32_t); |
| 358 | |
| 359 | extern jit_bool_t |
| 360 | jit_regset_cmp_ui(jit_regset_t*, jit_word_t); |
| 361 | |
| 362 | extern void |
| 363 | jit_regset_set_ui(jit_regset_t*, jit_word_t); |
| 364 | |
| 365 | extern jit_bool_t |
| 366 | jit_regset_set_p(jit_regset_t*); |
| 367 | |
| 368 | extern void |
| 369 | jit_regset_clrbit(jit_regset_t*, jit_int32_t); |
| 370 | |
| 371 | extern void |
| 372 | jit_regset_setbit(jit_regset_t*, jit_int32_t); |
| 373 | |
| 374 | extern jit_bool_t |
| 375 | jit_regset_tstbit(jit_regset_t*, jit_int32_t); |
| 376 | # if __sparc__ && __WORDSIZE == 64 |
| 377 | # define jit_regset_new(set) \ |
| 378 | do { (set)->rl = (set)->rh = 0; } while (0) |
| 379 | # define jit_regset_del(set) \ |
| 380 | do { (set)->rl = (set)->rh = 0; } while (0) |
| 381 | # else |
| 382 | # define jit_regset_new(set) \ |
| 383 | do { (set)->rl = (set)->rh = (set)->fl = (set)->fh = 0; } while (0) |
| 384 | # define jit_regset_del(set) \ |
| 385 | do { (set)->rl = (set)->rh = (set)->fl = (set)->fh = 0; } while (0) |
| 386 | # endif |
| 387 | #else |
| 388 | # define jit_regset_com(u, v) (*(u) = ~*(v)) |
| 389 | # define jit_regset_and(u, v, w) (*(u) = *(v) & *(w)) |
| 390 | # define jit_regset_ior(u, v, w) (*(u) = *(v) | *(w)) |
| 391 | # define jit_regset_xor(u, v, w) (*(u) = *(v) ^ *(w)) |
| 392 | # define jit_regset_set(u, v) (*(u) = *(v)) |
| 393 | # define jit_regset_set_mask(u, v) (*(u) = (1LL << (v)) - 1) |
| 394 | # define jit_regset_cmp_ui(u, v) (*(u) != (v)) |
| 395 | # define jit_regset_set_ui(u, v) (*(u) = (v)) |
| 396 | # define jit_regset_set_p(set) (*set) |
| 397 | # define jit_regset_clrbit(set, bit) (*(set) &= ~(1LL << (bit))) |
| 398 | # define jit_regset_setbit(set, bit) (*(set) |= 1LL << (bit)) |
| 399 | # define jit_regset_tstbit(set, bit) (*(set) & (1LL << (bit))) |
| 400 | # define jit_regset_new(set) (*(set) = 0) |
| 401 | # define jit_regset_del(set) (*(set) = 0) |
| 402 | #endif |
| 403 | extern unsigned long |
| 404 | jit_regset_scan1(jit_regset_t*, jit_int32_t); |
| 405 | |
| 406 | #define jit_reglive_setup() \ |
| 407 | do { \ |
| 408 | jit_regset_set_ui(&_jitc->reglive, 0); \ |
| 409 | jit_regset_set_ui(&_jitc->regmask, 0); \ |
| 410 | } while (0) |
| 411 | |
| 412 | /* |
| 413 | * Types |
| 414 | */ |
| 415 | typedef union jit_data jit_data_t; |
| 416 | typedef struct jit_note jit_note_t; |
| 417 | typedef struct jit_line jit_line_t; |
| 418 | typedef struct jit_block jit_block_t; |
| 419 | typedef struct jit_value jit_value_t; |
| 420 | typedef struct jit_compiler jit_compiler_t; |
| 421 | typedef struct jit_function jit_function_t; |
| 422 | typedef struct jit_register jit_register_t; |
| 423 | #if __arm__ |
| 424 | # if DISASSEMBLER |
| 425 | typedef struct jit_data_info jit_data_info_t; |
| 426 | # endif |
| 427 | #elif __riscv |
| 428 | typedef struct jit_const jit_const_t; |
| 429 | #endif |
| 430 | |
| 431 | union jit_data { |
| 432 | struct { |
| 433 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
| 434 | jit_int32_t l; |
| 435 | jit_int32_t h; |
| 436 | #else |
| 437 | jit_int32_t h; |
| 438 | jit_int32_t l; |
| 439 | #endif |
| 440 | } q; |
| 441 | jit_word_t w; |
| 442 | jit_float32_t f; |
| 443 | jit_float64_t d; |
| 444 | jit_pointer_t p; |
| 445 | jit_node_t *n; |
| 446 | }; |
| 447 | |
| 448 | struct jit_note { |
| 449 | jit_uint8_t *code; |
| 450 | char *name; |
| 451 | jit_line_t *lines; |
| 452 | jit_word_t length; |
| 453 | jit_word_t size; /* of code */ |
| 454 | }; |
| 455 | |
| 456 | struct jit_line { |
| 457 | char *file; |
| 458 | jit_int32_t *linenos; |
| 459 | jit_int32_t *offsets; |
| 460 | jit_word_t length; |
| 461 | }; |
| 462 | |
| 463 | struct jit_node { |
| 464 | jit_node_t *next; |
| 465 | jit_code_t code; |
| 466 | jit_uint16_t flag; |
| 467 | jit_uint16_t offset; /* Used if DEVEL_DISASSEMBLER */ |
| 468 | jit_data_t u; |
| 469 | jit_data_t v; |
| 470 | jit_data_t w; |
| 471 | jit_node_t *link; |
| 472 | }; |
| 473 | |
| 474 | struct jit_block { |
| 475 | jit_node_t *label; |
| 476 | jit_regset_t reglive; |
| 477 | jit_regset_t regmask; |
| 478 | jit_bool_t again; /* Flag need to rebuild regset masks |
| 479 | * due to changes in live and unknown |
| 480 | * state. */ |
| 481 | }; |
| 482 | |
| 483 | struct jit_value { |
| 484 | jit_int32_t kind; |
| 485 | jit_code_t code; |
| 486 | jit_data_t base; |
| 487 | jit_data_t disp; |
| 488 | }; |
| 489 | |
| 490 | typedef struct { |
| 491 | #if __arm__ |
| 492 | jit_word_t kind; |
| 493 | #endif |
| 494 | jit_word_t inst; |
| 495 | jit_node_t *node; |
| 496 | } jit_patch_t; |
| 497 | |
| 498 | #if __arm__ && DISASSEMBLER |
| 499 | struct jit_data_info { |
| 500 | jit_uword_t code; /* pointer in code buffer */ |
| 501 | jit_word_t length; /* length of constant vector */ |
| 502 | }; |
| 503 | #elif __riscv && __WORDSIZE == 64 |
| 504 | struct jit_const { |
| 505 | jit_word_t value; |
| 506 | jit_word_t address; |
| 507 | jit_const_t *next; |
| 508 | }; |
| 509 | #endif |
| 510 | |
| 511 | struct jit_function { |
| 512 | struct { |
| 513 | jit_int32_t argi; |
| 514 | jit_int32_t argf; |
| 515 | jit_int32_t size; |
| 516 | jit_int32_t aoff; |
| 517 | jit_int32_t alen; |
| 518 | jit_int32_t call; |
| 519 | jit_int32_t argn; /* for debug output */ |
| 520 | } self; |
| 521 | struct { |
| 522 | jit_int32_t argi; |
| 523 | jit_int32_t argf; |
| 524 | jit_int32_t size; |
| 525 | jit_int32_t call; |
| 526 | } call; |
| 527 | jit_node_t *prolog; |
| 528 | jit_node_t *epilog; |
| 529 | jit_node_t *alist; |
| 530 | jit_int32_t *regoff; |
| 531 | jit_regset_t regset; |
| 532 | jit_int32_t stack; |
| 533 | #if defined(__i386__) || defined(__x86_64__) |
| 534 | jit_int32_t cvt_offset; /* allocai'd offset for x87<->xmm or |
| 535 | * fpr<->gpr transfer using the stack */ |
| 536 | #endif |
| 537 | |
| 538 | /* Helper for common jit generation pattern, used in GNU Smalltalk |
| 539 | * and possibly others, where a static frame layout is required or |
| 540 | * assumed. */ |
| 541 | jit_int32_t frame; |
| 542 | jit_uint32_t define_frame : 1; |
| 543 | jit_uint32_t assume_frame : 1; |
| 544 | |
| 545 | jit_uint32_t need_frame : 1; /* need frame pointer? */ |
| 546 | jit_uint32_t need_stack : 1; /* need stack pointer? */ |
| 547 | jit_uint32_t need_return : 1; /* not a leaf function */ |
| 548 | |
| 549 | /* alloca offset offset */ |
| 550 | jit_int32_t aoffoff; |
| 551 | /* uses allocar flag */ |
| 552 | jit_uint32_t allocar : 1; |
| 553 | |
| 554 | #if __arm__ |
| 555 | /* If will, or might use float registers and vfp is not available. |
| 556 | * Use the first 64 bytes always, as the access to the virtual float |
| 557 | * registers use hardcoded instructions that can only reach 64 byte |
| 558 | * displacements, and to keep code simpler, do not use temporaries. */ |
| 559 | jit_uint32_t swf_offset : 1; |
| 560 | /* If need to call C functions for some operation, or variadic function */ |
| 561 | jit_uint32_t save_reg_args : 1; |
| 562 | #endif |
| 563 | |
| 564 | /* varargs state offsets */ |
| 565 | jit_int32_t vaoff; /* offset of jit_va_list */ |
| 566 | jit_int32_t vagp; /* first gp va argument */ |
| 567 | jit_int32_t vafp; /* first fp va argument */ |
| 568 | }; |
| 569 | |
| 570 | /* data used only during jit generation */ |
| 571 | struct jit_compiler { |
| 572 | #if __ia64__ |
| 573 | struct { |
| 574 | jit_uint64_t i : 41; |
| 575 | jit_uint64_t t : 4; |
| 576 | } inst[3]; |
| 577 | jit_regset_t regs; /* changed regs since last stop */ |
| 578 | jit_int32_t pred; /* changed preds last stop */ |
| 579 | jit_int32_t ioff; /* offset in inst vector */ |
| 580 | jit_int32_t rout; /* first output register */ |
| 581 | jit_int32_t breg; /* base register for prolog/epilog */ |
| 582 | #endif |
| 583 | #if __mips__ |
| 584 | struct { |
| 585 | jit_int32_t op; /* pending instruction, candidate |
| 586 | * to be inserted in a delay slot */ |
| 587 | jit_bool_t pend; /* non zero if need to emit op */ |
| 588 | } inst; |
| 589 | #endif |
| 590 | #if __mips__ || __ia64__ || __alpha__ || \ |
| 591 | (__sparc__ && __WORDSIZE == 64) || __riscv || __loongarch__ |
| 592 | jit_int32_t carry; |
| 593 | #define jit_carry _jitc->carry |
| 594 | #endif |
| 595 | jit_node_t *head; |
| 596 | jit_node_t *tail; |
| 597 | jit_node_t *prepare; /* inside prepare/finish* block */ |
| 598 | jit_uint32_t realize : 1; /* jit_realize() called? */ |
| 599 | jit_uint32_t dataset : 1; /* jit_dataset() called? */ |
| 600 | jit_uint32_t done : 1; /* emit state finished */ |
| 601 | jit_uint32_t emit : 1; /* emit state entered */ |
| 602 | jit_uint32_t again : 1; /* start over emiting function */ |
| 603 | jit_uint32_t synth : 8; /* emiting synthesized instructions */ |
| 604 | #if DEBUG |
| 605 | jit_uint32_t getreg : 1; |
| 606 | #endif |
| 607 | jit_uint32_t no_data : 1; |
| 608 | jit_uint32_t no_note : 1; |
| 609 | jit_int32_t framesize; /* space for callee save registers, |
| 610 | * frame pointer and return address */ |
| 611 | jit_int32_t reglen; /* number of registers */ |
| 612 | jit_regset_t regarg; /* cannot allocate */ |
| 613 | jit_regset_t regsav; /* automatic spill only once */ |
| 614 | jit_regset_t reglive; /* known live registers at some point */ |
| 615 | jit_regset_t regmask; /* register mask to update reglive */ |
| 616 | jit_regset_t explive; /* explicitly marked as live */ |
| 617 | struct { |
| 618 | jit_uint8_t *end; |
| 619 | } code; |
| 620 | struct { |
| 621 | jit_uint8_t *ptr; |
| 622 | jit_node_t **table; /* very simple hash table */ |
| 623 | jit_word_t size; /* number of vectors in table */ |
| 624 | jit_word_t count; /* number of hash table entries */ |
| 625 | jit_word_t offset; /* offset in bytes in ptr */ |
| 626 | } data; |
| 627 | jit_node_t **spill; |
| 628 | jit_int32_t *gen; /* ssa like "register version" */ |
| 629 | jit_value_t *values; /* temporary jit_value_t vector */ |
| 630 | struct { |
| 631 | jit_block_t *ptr; |
| 632 | jit_word_t offset; |
| 633 | jit_word_t length; |
| 634 | } blocks; /* basic blocks */ |
| 635 | struct { |
| 636 | jit_patch_t *ptr; |
| 637 | jit_word_t offset; |
| 638 | jit_word_t length; |
| 639 | } patches; /* forward patch information */ |
| 640 | jit_function_t *function; /* current function */ |
| 641 | struct { |
| 642 | jit_function_t *ptr; |
| 643 | jit_word_t offset; |
| 644 | jit_word_t length; |
| 645 | } functions; /* prolog/epilogue offsets in code */ |
| 646 | struct { |
| 647 | jit_node_t **ptr; |
| 648 | jit_word_t offset; |
| 649 | jit_word_t length; |
| 650 | } pool; |
| 651 | jit_node_t *list; |
| 652 | struct { |
| 653 | jit_node_t *head; /* first note node */ |
| 654 | jit_node_t *tail; /* linked list insertion */ |
| 655 | /* fields to store temporary state information */ |
| 656 | jit_word_t size; |
| 657 | jit_node_t *name; |
| 658 | jit_node_t *note; |
| 659 | jit_uint8_t *base; |
| 660 | } note; |
| 661 | #if __arm__ |
| 662 | /* prevent using thumb instructions that set flags? */ |
| 663 | jit_uint32_t no_set_flags : 1; |
| 664 | # if DISASSEMBLER |
| 665 | struct { |
| 666 | jit_data_info_t *ptr; |
| 667 | jit_word_t offset; |
| 668 | jit_word_t length; |
| 669 | } data_info; /* constant pools information */ |
| 670 | # endif |
| 671 | /* Note that this field is somewhat hackish, but required by most |
| 672 | * ways to implement jit, unless implementing a pure one function |
| 673 | * per jit, as most times it needs to start the jit buffer with a |
| 674 | * jump where the "main" prolog starts, and because the initial |
| 675 | * code is in "arm mode", need to make an "arm mode" patch on that |
| 676 | * jump. A good example is the test suite assembler, where most |
| 677 | * test cases start with a "jmpi main" call. */ |
| 678 | jit_uword_t thumb; |
| 679 | struct { |
| 680 | jit_uint8_t *data; /* pointer to code */ |
| 681 | jit_word_t size; /* size data */ |
| 682 | jit_word_t offset; /* pending patches */ |
| 683 | jit_word_t length; /* number of pending constants */ |
| 684 | jit_int32_t values[1024]; /* pending constants */ |
| 685 | jit_word_t patches[2048]; |
| 686 | } consts; |
| 687 | #elif (__powerpc__ && _CALL_AIXDESC) || __ia64__ |
| 688 | /* Keep track of prolog addresses, just for the sake of making |
| 689 | * jit that starts with a jump to a "main" label work like other |
| 690 | * backends. */ |
| 691 | struct { |
| 692 | jit_word_t *ptr; |
| 693 | jit_word_t offset; |
| 694 | jit_word_t length; |
| 695 | } prolog; |
| 696 | jit_bool_t jump; |
| 697 | #elif __riscv && __WORDSIZE == 64 |
| 698 | struct { |
| 699 | /* Hash table for constants to be resolved and patched */ |
| 700 | struct { |
| 701 | jit_const_t **table; /* very simple hash table */ |
| 702 | jit_word_t size; /* number of vectors in table */ |
| 703 | jit_word_t count; /* number of distinct entries */ |
| 704 | } hash; |
| 705 | struct { |
| 706 | jit_const_t **ptr; /* keep a single pointer */ |
| 707 | jit_const_t *list; /* free list */ |
| 708 | jit_word_t length; /* length of pool */ |
| 709 | } pool; |
| 710 | /* Linear list for constants that cannot be encoded easily */ |
| 711 | struct { |
| 712 | jit_word_t *instrs; /* list of direct movi instructions */ |
| 713 | jit_word_t *values; /* list of direct movi constants */ |
| 714 | jit_word_t offset; /* offset in instrs/values vector */ |
| 715 | jit_word_t length; /* length of instrs/values vector */ |
| 716 | } vector; |
| 717 | } consts; |
| 718 | #endif |
| 719 | #if GET_JIT_SIZE |
| 720 | /* Temporary storage to calculate instructions length */ |
| 721 | jit_word_t size; |
| 722 | /* Global flag for code buffer heuristic size computation */ |
| 723 | jit_word_t mult; |
| 724 | /* Pointer to code to prevent miscalculation if reallocating buffer */ |
| 725 | jit_uint8_t *cptr; |
| 726 | #endif |
| 727 | }; |
| 728 | |
| 729 | #define _jitc _jit->comp |
| 730 | struct jit_state { |
| 731 | union { |
| 732 | jit_uint8_t *uc; |
| 733 | jit_uint16_t *us; |
| 734 | jit_uint32_t *ui; |
| 735 | jit_uint64_t *ul; |
| 736 | jit_word_t w; |
| 737 | } pc; |
| 738 | struct { |
| 739 | jit_uint8_t *ptr; |
| 740 | jit_word_t length; |
| 741 | /* PROTECTED bytes starting at PTR are mprotect'd. */ |
| 742 | jit_word_t protected; |
| 743 | } code; |
| 744 | struct { |
| 745 | jit_uint8_t *ptr; |
| 746 | jit_word_t length; |
| 747 | } data; |
| 748 | struct { |
| 749 | jit_note_t *ptr; |
| 750 | jit_word_t length; |
| 751 | } note; |
| 752 | jit_compiler_t *comp; |
| 753 | /* Flags to know if user did set the code and data buffers */ |
| 754 | jit_uint32_t user_code : 1; |
| 755 | jit_uint32_t user_data : 1; |
| 756 | }; |
| 757 | |
| 758 | struct jit_register { |
| 759 | jit_reg_t spec; |
| 760 | char *name; |
| 761 | }; |
| 762 | |
| 763 | /* |
| 764 | * Prototypes |
| 765 | */ |
| 766 | extern void jit_get_cpu(void); |
| 767 | |
| 768 | #define jit_init() _jit_init(_jit) |
| 769 | extern void _jit_init(jit_state_t*); |
| 770 | |
| 771 | #define jit_synth_inc() _jit_synth_inc(_jit) |
| 772 | extern void _jit_synth_inc(jit_state_t*); |
| 773 | |
| 774 | #define jit_new_node_no_link(u) _jit_new_node_no_link(_jit, u) |
| 775 | extern jit_node_t *_jit_new_node_no_link(jit_state_t*, jit_code_t); |
| 776 | |
| 777 | #define jit_link_node(u) _jit_link_node(_jit, u) |
| 778 | extern void _jit_link_node(jit_state_t*, jit_node_t*); |
| 779 | |
| 780 | #define jit_link_label(l) _jit_link_label(_jit,l) |
| 781 | extern void |
| 782 | _jit_link_label(jit_state_t*,jit_node_t*); |
| 783 | |
| 784 | #define jit_synth_dec() _jit_synth_dec(_jit) |
| 785 | extern void _jit_synth_dec(jit_state_t*); |
| 786 | |
| 787 | #define jit_reglive(node) _jit_reglive(_jit, node) |
| 788 | extern void |
| 789 | _jit_reglive(jit_state_t*, jit_node_t*); |
| 790 | |
| 791 | #define jit_regarg_set(n,v) _jit_regarg_set(_jit,n,v) |
| 792 | extern void |
| 793 | _jit_regarg_set(jit_state_t*, jit_node_t*, jit_int32_t); |
| 794 | |
| 795 | #define jit_regarg_clr(n,v) _jit_regarg_clr(_jit,n,v) |
| 796 | extern void |
| 797 | _jit_regarg_clr(jit_state_t*, jit_node_t*, jit_int32_t); |
| 798 | |
| 799 | #define jit_save(reg) _jit_save(_jit, reg) |
| 800 | extern void |
| 801 | _jit_save(jit_state_t*, jit_int32_t); |
| 802 | |
| 803 | #define jit_load(reg) _jit_load(_jit, reg) |
| 804 | extern void |
| 805 | _jit_load(jit_state_t*, jit_int32_t); |
| 806 | |
| 807 | #define jit_trampoline(u,v) _jit_trampoline(_jit, u, v) |
| 808 | extern void _jit_trampoline(jit_state_t*, jit_int32_t, jit_bool_t); |
| 809 | |
| 810 | #define jit_optimize() _jit_optimize(_jit) |
| 811 | extern void |
| 812 | _jit_optimize(jit_state_t*); |
| 813 | |
| 814 | #define jit_classify(code) _jit_classify(_jit, code) |
| 815 | extern jit_int32_t |
| 816 | _jit_classify(jit_state_t*, jit_code_t); |
| 817 | |
| 818 | #define jit_regarg_p(n, r) _jit_regarg_p(_jit, n, r) |
| 819 | extern jit_bool_t |
| 820 | _jit_regarg_p(jit_state_t*, jit_node_t*, jit_int32_t); |
| 821 | |
| 822 | #define emit_code() _emit_code(_jit) |
| 823 | extern jit_pointer_t |
| 824 | _emit_code(jit_state_t*); |
| 825 | |
| 826 | extern void |
| 827 | jit_flush(void *fptr, void *tptr); |
| 828 | |
| 829 | #define emit_ldxi(r0, r1, i0) _emit_ldxi(_jit, r0, r1, i0) |
| 830 | extern void |
| 831 | _emit_ldxi(jit_state_t*, jit_int32_t, jit_int32_t, jit_word_t); |
| 832 | |
| 833 | #define emit_stxi(i0, r0, r1) _emit_stxi(_jit, i0, r0, r1) |
| 834 | extern void |
| 835 | _emit_stxi(jit_state_t*, jit_word_t, jit_int32_t, jit_int32_t); |
| 836 | |
| 837 | #define emit_ldxi_d(r0, r1, i0) _emit_ldxi_d(_jit, r0, r1, i0) |
| 838 | extern void |
| 839 | _emit_ldxi_d(jit_state_t*, jit_int32_t, jit_int32_t, jit_word_t); |
| 840 | |
| 841 | #define emit_stxi_d(i0, r0, r1) _emit_stxi_d(_jit, i0, r0, r1) |
| 842 | extern void |
| 843 | _emit_stxi_d(jit_state_t*, jit_word_t, jit_int32_t, jit_int32_t); |
| 844 | |
| 845 | extern void jit_init_print(void); |
| 846 | extern void jit_init_debug(const char*); |
| 847 | extern void jit_finish_debug(void); |
| 848 | |
| 849 | extern void jit_init_note(void); |
| 850 | extern void jit_finish_note(void); |
| 851 | #define jit_set_note(n,u,v,w) _jit_set_note(_jit, n, u, v, w) |
| 852 | extern void _jit_set_note(jit_state_t*, jit_note_t*, char*, int, jit_int32_t); |
| 853 | #define jit_annotate() _jit_annotate(_jit) |
| 854 | extern void _jit_annotate(jit_state_t*); |
| 855 | |
| 856 | #define jit_print_node(u) _jit_print_node(_jit,u) |
| 857 | extern void _jit_print_node(jit_state_t*,jit_node_t*); |
| 858 | |
| 859 | extern jit_pointer_t jit_memcpy(jit_pointer_t,const void*,jit_word_t); |
| 860 | extern jit_pointer_t jit_memmove(jit_pointer_t,const void*,jit_word_t); |
| 861 | extern void jit_alloc(jit_pointer_t*, jit_word_t); |
| 862 | extern void jit_realloc(jit_pointer_t*, jit_word_t, jit_word_t); |
| 863 | void jit_free(jit_pointer_t*); |
| 864 | |
| 865 | extern void jit_init_size(void); |
| 866 | extern void jit_finish_size(void); |
| 867 | |
| 868 | #if GET_JIT_SIZE |
| 869 | # define jit_size_prepare() _jit_size_prepare(_jit) |
| 870 | extern void |
| 871 | _jit_size_prepare(jit_state_t*); |
| 872 | |
| 873 | # define jit_size_collect(node) _jit_size_collect(_jit, node) |
| 874 | extern void |
| 875 | _jit_size_collect(jit_state_t*, jit_node_t*); |
| 876 | #else |
| 877 | # define jit_get_size() _jit_get_size(_jit) |
| 878 | extern jit_word_t |
| 879 | _jit_get_size(jit_state_t*); |
| 880 | #endif |
| 881 | |
| 882 | extern jit_word_t |
| 883 | jit_get_max_instr(void); |
| 884 | |
| 885 | /* |
| 886 | * Externs |
| 887 | */ |
| 888 | extern jit_register_t _rvs[]; |
| 889 | |
| 890 | #endif /* _jit_private_h */ |