tcg/tcg.h

   1 /*
   2  * Tiny Code Generator for QEMU
   3  *
   4  * Copyright (c) 2008 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "qemu-common.h"
  25
  26 /* Target word size (must be identical to pointer size). */
  27 #if UINTPTR_MAX == UINT32_MAX
  28 # define TCG_TARGET_REG_BITS 32
  29 #elif UINTPTR_MAX == UINT64_MAX
  30 # define TCG_TARGET_REG_BITS 64
  31 #else
  32 # error Unknown pointer size for tcg target
  33 #endif
  34
  35 #if TCG_TARGET_REG_BITS == 32
  36 typedef int32_t tcg_target_long;
  37 typedef uint32_t tcg_target_ulong;
  38 #define TCG_PRIlx PRIx32
  39 #define TCG_PRIld PRId32
  40 #elif TCG_TARGET_REG_BITS == 64
  41 typedef int64_t tcg_target_long;
  42 typedef uint64_t tcg_target_ulong;
  43 #define TCG_PRIlx PRIx64
  44 #define TCG_PRIld PRId64
  45 #else
  46 #error unsupported
  47 #endif
  48
  49 #include "tcg-target.h"
  50 #include "tcg-runtime.h"
  51
  52 #if TCG_TARGET_NB_REGS <= 32
  53 typedef uint32_t TCGRegSet;
  54 #elif TCG_TARGET_NB_REGS <= 64
  55 typedef uint64_t TCGRegSet;
  56 #else
  57 #error unsupported
  58 #endif
  59
  60 /* Turn some undef macros into false macros.  */
  61 #if TCG_TARGET_REG_BITS == 32
  62 #define TCG_TARGET_HAS_div_i64          0
  63 #define TCG_TARGET_HAS_div2_i64         0
  64 #define TCG_TARGET_HAS_rot_i64          0
  65 #define TCG_TARGET_HAS_ext8s_i64        0
  66 #define TCG_TARGET_HAS_ext16s_i64       0
  67 #define TCG_TARGET_HAS_ext32s_i64       0
  68 #define TCG_TARGET_HAS_ext8u_i64        0
  69 #define TCG_TARGET_HAS_ext16u_i64       0
  70 #define TCG_TARGET_HAS_ext32u_i64       0
  71 #define TCG_TARGET_HAS_bswap16_i64      0
  72 #define TCG_TARGET_HAS_bswap32_i64      0
  73 #define TCG_TARGET_HAS_bswap64_i64      0
  74 #define TCG_TARGET_HAS_neg_i64          0
  75 #define TCG_TARGET_HAS_not_i64          0
  76 #define TCG_TARGET_HAS_andc_i64         0
  77 #define TCG_TARGET_HAS_orc_i64          0
  78 #define TCG_TARGET_HAS_eqv_i64          0
  79 #define TCG_TARGET_HAS_nand_i64         0
  80 #define TCG_TARGET_HAS_nor_i64          0
  81 #define TCG_TARGET_HAS_deposit_i64      0
  82 #endif
  83
  84 #ifndef TCG_TARGET_deposit_i32_valid
  85 #define TCG_TARGET_deposit_i32_valid(ofs, len) 1
  86 #endif
  87 #ifndef TCG_TARGET_deposit_i64_valid
  88 #define TCG_TARGET_deposit_i64_valid(ofs, len) 1
  89 #endif
  90
  91 /* Only one of DIV or DIV2 should be defined.  */
  92 #if defined(TCG_TARGET_HAS_div_i32)
  93 #define TCG_TARGET_HAS_div2_i32         0
  94 #elif defined(TCG_TARGET_HAS_div2_i32)
  95 #define TCG_TARGET_HAS_div_i32          0
  96 #endif
  97 #if defined(TCG_TARGET_HAS_div_i64)
  98 #define TCG_TARGET_HAS_div2_i64         0
  99 #elif defined(TCG_TARGET_HAS_div2_i64)
 100 #define TCG_TARGET_HAS_div_i64          0
 101 #endif
 102
 103 typedef enum TCGOpcode {
 104 #define DEF(name, oargs, iargs, cargs, flags) INDEX_op_ ## name,
 105 #include "tcg-opc.h"
 106 #undef DEF
 107     NB_OPS,
 108 } TCGOpcode;
 109
 110 #define tcg_regset_clear(d) (d) = 0
 111 #define tcg_regset_set(d, s) (d) = (s)
 112 #define tcg_regset_set32(d, reg, val32) (d) |= (val32) << (reg)
 113 #define tcg_regset_set_reg(d, r) (d) |= 1L << (r)
 114 #define tcg_regset_reset_reg(d, r) (d) &= ~(1L << (r))
 115 #define tcg_regset_test_reg(d, r) (((d) >> (r)) & 1)
 116 #define tcg_regset_or(d, a, b) (d) = (a) | (b)
 117 #define tcg_regset_and(d, a, b) (d) = (a) & (b)
 118 #define tcg_regset_andnot(d, a, b) (d) = (a) & ~(b)
 119 #define tcg_regset_not(d, a) (d) = ~(a)
 120
 121 typedef struct TCGRelocation {
 122     struct TCGRelocation *next;
 123     int type;
 124     uint8_t *ptr;
 125     tcg_target_long addend;
 126 } TCGRelocation;
 127
 128 typedef struct TCGLabel {
 129     int has_value;
 130     union {
 131         tcg_target_ulong value;
 132         TCGRelocation *first_reloc;
 133     } u;
 134 } TCGLabel;
 135
 136 typedef struct TCGPool {
 137     struct TCGPool *next;
 138     int size;
 139     uint8_t data[0] __attribute__ ((aligned));
 140 } TCGPool;
 141
 142 #define TCG_POOL_CHUNK_SIZE 32768
 143
 144 #define TCG_MAX_LABELS 512
 145
 146 #define TCG_MAX_TEMPS 512
 147
 148 /* when the size of the arguments of a called function is smaller than
 149    this value, they are statically allocated in the TB stack frame */
 150 #define TCG_STATIC_CALL_ARGS_SIZE 128
 151
 152 typedef enum TCGType {
 153     TCG_TYPE_I32,
 154     TCG_TYPE_I64,
 155     TCG_TYPE_COUNT, /* number of different types */
 156
 157     /* An alias for the size of the host register.  */
 158 #if TCG_TARGET_REG_BITS == 32
 159     TCG_TYPE_REG = TCG_TYPE_I32,
 160 #else
 161     TCG_TYPE_REG = TCG_TYPE_I64,
 162 #endif
 163
 164     /* An alias for the size of the native pointer.  We don't currently
 165        support any hosts with 64-bit registers and 32-bit pointers.  */
 166     TCG_TYPE_PTR = TCG_TYPE_REG,
 167
 168     /* An alias for the size of the target "long", aka register.  */
 169 #if TARGET_LONG_BITS == 64
 170     TCG_TYPE_TL = TCG_TYPE_I64,
 171 #else
 172     TCG_TYPE_TL = TCG_TYPE_I32,
 173 #endif
 174 } TCGType;
 175
 176 typedef tcg_target_ulong TCGArg;
 177
 178 /* Define a type and accessor macros for variables.  Using a struct is
 179    nice because it gives some level of type safely.  Ideally the compiler
 180    be able to see through all this.  However in practice this is not true,
 181    especially on targets with braindamaged ABIs (e.g. i386).
 182    We use plain int by default to avoid this runtime overhead.
 183    Users of tcg_gen_* don't need to know about any of this, and should
 184    treat TCGv as an opaque type.
 185    In addition we do typechecking for different types of variables.  TCGv_i32
 186    and TCGv_i64 are 32/64-bit variables respectively.  TCGv and TCGv_ptr
 187    are aliases for target_ulong and host pointer sized values respectively.
 188  */
 189
 190 #ifdef CONFIG_DEBUG_TCG
 191 #define DEBUG_TCGV 1
 192 #endif
 193
 194 #ifdef DEBUG_TCGV
 195
 196 typedef struct
 197 {
 198     int i32;
 199 } TCGv_i32;
 200
 201 typedef struct
 202 {
 203     int i64;
 204 } TCGv_i64;
 205
 206 typedef struct {
 207     int iptr;
 208 } TCGv_ptr;
 209
 210 #define MAKE_TCGV_I32(i) __extension__                  \
 211     ({ TCGv_i32 make_tcgv_tmp = {i}; make_tcgv_tmp;})
 212 #define MAKE_TCGV_I64(i) __extension__                  \
 213     ({ TCGv_i64 make_tcgv_tmp = {i}; make_tcgv_tmp;})
 214 #define MAKE_TCGV_PTR(i) __extension__                  \
 215     ({ TCGv_ptr make_tcgv_tmp = {i}; make_tcgv_tmp; })
 216 #define GET_TCGV_I32(t) ((t).i32)
 217 #define GET_TCGV_I64(t) ((t).i64)
 218 #define GET_TCGV_PTR(t) ((t).iptr)
 219 #if TCG_TARGET_REG_BITS == 32
 220 #define TCGV_LOW(t) MAKE_TCGV_I32(GET_TCGV_I64(t))
 221 #define TCGV_HIGH(t) MAKE_TCGV_I32(GET_TCGV_I64(t) + 1)
 222 #endif
 223
 224 #else /* !DEBUG_TCGV */
 225
 226 typedef int TCGv_i32;
 227 typedef int TCGv_i64;
 228 #if TCG_TARGET_REG_BITS == 32
 229 #define TCGv_ptr TCGv_i32
 230 #else
 231 #define TCGv_ptr TCGv_i64
 232 #endif
 233 #define MAKE_TCGV_I32(x) (x)
 234 #define MAKE_TCGV_I64(x) (x)
 235 #define MAKE_TCGV_PTR(x) (x)
 236 #define GET_TCGV_I32(t) (t)
 237 #define GET_TCGV_I64(t) (t)
 238 #define GET_TCGV_PTR(t) (t)
 239
 240 #if TCG_TARGET_REG_BITS == 32
 241 #define TCGV_LOW(t) (t)
 242 #define TCGV_HIGH(t) ((t) + 1)
 243 #endif
 244
 245 #endif /* DEBUG_TCGV */
 246
 247 #define TCGV_EQUAL_I32(a, b) (GET_TCGV_I32(a) == GET_TCGV_I32(b))
 248 #define TCGV_EQUAL_I64(a, b) (GET_TCGV_I64(a) == GET_TCGV_I64(b))
 249
 250 /* Dummy definition to avoid compiler warnings.  */
 251 #define TCGV_UNUSED_I32(x) x = MAKE_TCGV_I32(-1)
 252 #define TCGV_UNUSED_I64(x) x = MAKE_TCGV_I64(-1)
 253
 254 /* call flags */
 255 /* A pure function only reads its arguments and TCG global variables
 256    and cannot raise exceptions. Hence a call to a pure function can be
 257    safely suppressed if the return value is not used. */
 258 #define TCG_CALL_PURE           0x0010
 259 /* A const function only reads its arguments and does not use TCG
 260    global variables. Hence a call to such a function does not
 261    save TCG global variables back to their canonical location. */
 262 #define TCG_CALL_CONST          0x0020
 263
 264 /* used to align parameters */
 265 #define TCG_CALL_DUMMY_TCGV     MAKE_TCGV_I32(-1)
 266 #define TCG_CALL_DUMMY_ARG      ((TCGArg)(-1))
 267
 268 typedef enum {
 269     TCG_COND_EQ,
 270     TCG_COND_NE,
 271     TCG_COND_LT,
 272     TCG_COND_GE,
 273     TCG_COND_LE,
 274     TCG_COND_GT,
 275     /* unsigned */
 276     TCG_COND_LTU,
 277     TCG_COND_GEU,
 278     TCG_COND_LEU,
 279     TCG_COND_GTU,
 280 } TCGCond;
 281
 282 /* Invert the sense of the comparison.  */
 283 static inline TCGCond tcg_invert_cond(TCGCond c)
 284 {
 285     return (TCGCond)(c ^ 1);
 286 }
 287
 288 /* Swap the operands in a comparison.  */
 289 static inline TCGCond tcg_swap_cond(TCGCond c)
 290 {
 291     int mask = (c < TCG_COND_LT ? 0 : c < TCG_COND_LTU ? 7 : 15);
 292     return (TCGCond)(c ^ mask);
 293 }
 294
 295 static inline TCGCond tcg_unsigned_cond(TCGCond c)
 296 {
 297     return (c >= TCG_COND_LT && c <= TCG_COND_GT ? c + 4 : c);
 298 }
 299
 300 #define TEMP_VAL_DEAD  0
 301 #define TEMP_VAL_REG   1
 302 #define TEMP_VAL_MEM   2
 303 #define TEMP_VAL_CONST 3
 304
 305 /* XXX: optimize memory layout */
 306 typedef struct TCGTemp {
 307     TCGType base_type;
 308     TCGType type;
 309     int val_type;
 310     int reg;
 311     tcg_target_long val;
 312     int mem_reg;
 313     tcg_target_long mem_offset;
 314     unsigned int fixed_reg:1;
 315     unsigned int mem_coherent:1;
 316     unsigned int mem_allocated:1;
 317     unsigned int temp_local:1; /* If true, the temp is saved across
 318                                   basic blocks. Otherwise, it is not
 319                                   preserved across basic blocks. */
 320     unsigned int temp_allocated:1; /* never used for code gen */
 321     /* index of next free temp of same base type, -1 if end */
 322     int next_free_temp;
 323     const char *name;
 324 } TCGTemp;
 325
 326 typedef struct TCGHelperInfo {
 327     tcg_target_ulong func;
 328     const char *name;
 329 } TCGHelperInfo;
 330
 331 typedef struct TCGContext TCGContext;
 332
 333 struct TCGContext {
 334     uint8_t *pool_cur, *pool_end;
 335     TCGPool *pool_first, *pool_current, *pool_first_large;
 336     TCGLabel *labels;
 337     int nb_labels;
 338     TCGTemp *temps; /* globals first, temps after */
 339     int nb_globals;
 340     int nb_temps;
 341     /* index of free temps, -1 if none */
 342     int first_free_temp[TCG_TYPE_COUNT * 2];
 343
 344     /* goto_tb support */
 345     uint8_t *code_buf;
 346     unsigned long *tb_next;
 347     uint16_t *tb_next_offset;
 348     uint16_t *tb_jmp_offset; /* != NULL if USE_DIRECT_JUMP */
 349
 350     /* liveness analysis */
 351     uint16_t *op_dead_args; /* for each operation, each bit tells if the
 352                                corresponding argument is dead */
 353
 354     /* tells in which temporary a given register is. It does not take
 355        into account fixed registers */
 356     int reg_to_temp[TCG_TARGET_NB_REGS];
 357     TCGRegSet reserved_regs;
 358     tcg_target_long current_frame_offset;
 359     tcg_target_long frame_start;
 360     tcg_target_long frame_end;
 361     int frame_reg;
 362
 363     uint8_t *code_ptr;
 364     TCGTemp static_temps[TCG_MAX_TEMPS];
 365
 366     TCGHelperInfo *helpers;
 367     int nb_helpers;
 368     int allocated_helpers;
 369     int helpers_sorted;
 370
 371 #ifdef CONFIG_PROFILER
 372     /* profiling info */
 373     int64_t tb_count1;
 374     int64_t tb_count;
 375     int64_t op_count; /* total insn count */
 376     int op_count_max; /* max insn per TB */
 377     int64_t temp_count;
 378     int temp_count_max;
 379     int64_t del_op_count;
 380     int64_t code_in_len;
 381     int64_t code_out_len;
 382     int64_t interm_time;
 383     int64_t code_time;
 384     int64_t la_time;
 385     int64_t restore_count;
 386     int64_t restore_time;
 387 #endif
 388
 389 #ifdef CONFIG_DEBUG_TCG
 390     int temps_in_use;
 391 #endif
 392 };
 393
 394 extern TCGContext tcg_ctx;
 395 extern uint16_t *gen_opc_ptr;
 396 extern TCGArg *gen_opparam_ptr;
 397 extern uint16_t gen_opc_buf[];
 398 extern TCGArg gen_opparam_buf[];
 399
 400 /* pool based memory allocation */
 401
 402 void *tcg_malloc_internal(TCGContext *s, int size);
 403 void tcg_pool_reset(TCGContext *s);
 404 void tcg_pool_delete(TCGContext *s);
 405
 406 static inline void *tcg_malloc(int size)
 407 {
 408     TCGContext *s = &tcg_ctx;
 409     uint8_t *ptr, *ptr_end;
 410     size = (size + sizeof(long) - 1) & ~(sizeof(long) - 1);
 411     ptr = s->pool_cur;
 412     ptr_end = ptr + size;
 413     if (unlikely(ptr_end > s->pool_end)) {
 414         return tcg_malloc_internal(&tcg_ctx, size);
 415     } else {
 416         s->pool_cur = ptr_end;
 417         return ptr;
 418     }
 419 }
 420
 421 void tcg_context_init(TCGContext *s);
 422 void tcg_prologue_init(TCGContext *s);
 423 void tcg_func_start(TCGContext *s);
 424
 425 int tcg_gen_code(TCGContext *s, uint8_t *gen_code_buf);
 426 int tcg_gen_code_search_pc(TCGContext *s, uint8_t *gen_code_buf, long offset);
 427
 428 void tcg_set_frame(TCGContext *s, int reg,
 429                    tcg_target_long start, tcg_target_long size);
 430
 431 TCGv_i32 tcg_global_reg_new_i32(int reg, const char *name);
 432 TCGv_i32 tcg_global_mem_new_i32(int reg, tcg_target_long offset,
 433                                 const char *name);
 434 TCGv_i32 tcg_temp_new_internal_i32(int temp_local);
 435 static inline TCGv_i32 tcg_temp_new_i32(void)
 436 {
 437     return tcg_temp_new_internal_i32(0);
 438 }
 439 static inline TCGv_i32 tcg_temp_local_new_i32(void)
 440 {
 441     return tcg_temp_new_internal_i32(1);
 442 }
 443 void tcg_temp_free_i32(TCGv_i32 arg);
 444 char *tcg_get_arg_str_i32(TCGContext *s, char *buf, int buf_size, TCGv_i32 arg);
 445
 446 TCGv_i64 tcg_global_reg_new_i64(int reg, const char *name);
 447 TCGv_i64 tcg_global_mem_new_i64(int reg, tcg_target_long offset,
 448                                 const char *name);
 449 TCGv_i64 tcg_temp_new_internal_i64(int temp_local);
 450 static inline TCGv_i64 tcg_temp_new_i64(void)
 451 {
 452     return tcg_temp_new_internal_i64(0);
 453 }
 454 static inline TCGv_i64 tcg_temp_local_new_i64(void)
 455 {
 456     return tcg_temp_new_internal_i64(1);
 457 }
 458 void tcg_temp_free_i64(TCGv_i64 arg);
 459 char *tcg_get_arg_str_i64(TCGContext *s, char *buf, int buf_size, TCGv_i64 arg);
 460
 461 static inline bool tcg_arg_is_local(TCGContext *s, TCGArg arg)
 462 {
 463     return s->temps[arg].temp_local;
 464 }
 465
 466 #if defined(CONFIG_DEBUG_TCG)
 467 /* If you call tcg_clear_temp_count() at the start of a section of
 468  * code which is not supposed to leak any TCG temporaries, then
 469  * calling tcg_check_temp_count() at the end of the section will
 470  * return 1 if the section did in fact leak a temporary.
 471  */
 472 void tcg_clear_temp_count(void);
 473 int tcg_check_temp_count(void);
 474 #else
 475 #define tcg_clear_temp_count() do { } while (0)
 476 #define tcg_check_temp_count() 0
 477 #endif
 478
 479 void tcg_dump_info(FILE *f, fprintf_function cpu_fprintf);
 480
 481 #define TCG_CT_ALIAS  0x80
 482 #define TCG_CT_IALIAS 0x40
 483 #define TCG_CT_REG    0x01
 484 #define TCG_CT_CONST  0x02 /* any constant of register size */
 485
 486 typedef struct TCGArgConstraint {
 487     uint16_t ct;
 488     uint8_t alias_index;
 489     union {
 490         TCGRegSet regs;
 491     } u;
 492 } TCGArgConstraint;
 493
 494 #define TCG_MAX_OP_ARGS 16
 495
 496 /* Bits for TCGOpDef->flags, 8 bits available.  */
 497 enum {
 498     /* Instruction defines the end of a basic block.  */
 499     TCG_OPF_BB_END       = 0x01,
 500     /* Instruction clobbers call registers and potentially update globals.  */
 501     TCG_OPF_CALL_CLOBBER = 0x02,
 502     /* Instruction has side effects: it cannot be removed
 503        if its outputs are not used.  */
 504     TCG_OPF_SIDE_EFFECTS = 0x04,
 505     /* Instruction operands are 64-bits (otherwise 32-bits).  */
 506     TCG_OPF_64BIT        = 0x08,
 507     /* Instruction is optional and not implemented by the host.  */
 508     TCG_OPF_NOT_PRESENT  = 0x10,
 509 };
 510
 511 typedef struct TCGOpDef {
 512     const char *name;
 513     uint8_t nb_oargs, nb_iargs, nb_cargs, nb_args;
 514     uint8_t flags;
 515     TCGArgConstraint *args_ct;
 516     int *sorted_args;
 517 #if defined(CONFIG_DEBUG_TCG)
 518     int used;
 519 #endif
 520 } TCGOpDef;
 521
 522 extern TCGOpDef tcg_op_defs[];
 523 extern const size_t tcg_op_defs_max;
 524
 525 typedef struct TCGTargetOpDef {
 526     TCGOpcode op;
 527     const char *args_ct_str[TCG_MAX_OP_ARGS];
 528 } TCGTargetOpDef;
 529
 530 #define tcg_abort() \
 531 do {\
 532     fprintf(stderr, "%s:%d: tcg fatal error\n", __FILE__, __LINE__);\
 533     abort();\
 534 } while (0)
 535
 536 void tcg_add_target_add_op_defs(const TCGTargetOpDef *tdefs);
 537
 538 #if TCG_TARGET_REG_BITS == 32
 539 #define TCGV_NAT_TO_PTR(n) MAKE_TCGV_PTR(GET_TCGV_I32(n))
 540 #define TCGV_PTR_TO_NAT(n) MAKE_TCGV_I32(GET_TCGV_PTR(n))
 541
 542 #define tcg_const_ptr(V) TCGV_NAT_TO_PTR(tcg_const_i32((tcg_target_long)(V)))
 543 #define tcg_global_reg_new_ptr(R, N) \
 544     TCGV_NAT_TO_PTR(tcg_global_reg_new_i32((R), (N)))
 545 #define tcg_global_mem_new_ptr(R, O, N) \
 546     TCGV_NAT_TO_PTR(tcg_global_mem_new_i32((R), (O), (N)))
 547 #define tcg_temp_new_ptr() TCGV_NAT_TO_PTR(tcg_temp_new_i32())
 548 #define tcg_temp_free_ptr(T) tcg_temp_free_i32(TCGV_PTR_TO_NAT(T))
 549 #else
 550 #define TCGV_NAT_TO_PTR(n) MAKE_TCGV_PTR(GET_TCGV_I64(n))
 551 #define TCGV_PTR_TO_NAT(n) MAKE_TCGV_I64(GET_TCGV_PTR(n))
 552
 553 #define tcg_const_ptr(V) TCGV_NAT_TO_PTR(tcg_const_i64((tcg_target_long)(V)))
 554 #define tcg_global_reg_new_ptr(R, N) \
 555     TCGV_NAT_TO_PTR(tcg_global_reg_new_i64((R), (N)))
 556 #define tcg_global_mem_new_ptr(R, O, N) \
 557     TCGV_NAT_TO_PTR(tcg_global_mem_new_i64((R), (O), (N)))
 558 #define tcg_temp_new_ptr() TCGV_NAT_TO_PTR(tcg_temp_new_i64())
 559 #define tcg_temp_free_ptr(T) tcg_temp_free_i64(TCGV_PTR_TO_NAT(T))
 560 #endif
 561
 562 void tcg_gen_callN(TCGContext *s, TCGv_ptr func, unsigned int flags,
 563                    int sizemask, TCGArg ret, int nargs, TCGArg *args);
 564
 565 void tcg_gen_shifti_i64(TCGv_i64 ret, TCGv_i64 arg1,
 566                         int c, int right, int arith);
 567
 568 TCGArg *tcg_optimize(TCGContext *s, uint16_t *tcg_opc_ptr, TCGArg *args,
 569                      TCGOpDef *tcg_op_def);
 570
 571 /* only used for debugging purposes */
 572 void tcg_register_helper(void *func, const char *name);
 573 const char *tcg_helper_get_name(TCGContext *s, void *func);
 574 void tcg_dump_ops(TCGContext *s, FILE *outfile);
 575
 576 void dump_ops(const uint16_t *opc_buf, const TCGArg *opparam_buf);
 577 TCGv_i32 tcg_const_i32(int32_t val);
 578 TCGv_i64 tcg_const_i64(int64_t val);
 579 TCGv_i32 tcg_const_local_i32(int32_t val);
 580 TCGv_i64 tcg_const_local_i64(int64_t val);
 581
 582 extern uint8_t code_gen_prologue[];
 583
 584 /* TCG targets may use a different definition of tcg_qemu_tb_exec. */
 585 #if !defined(tcg_qemu_tb_exec)
 586 # define tcg_qemu_tb_exec(env, tb_ptr) \
 587     ((tcg_target_ulong (*)(void *, void *))code_gen_prologue)(env, tb_ptr)
 588 #endif
 589
 590 void tcg_register_jit(void *buf, size_t buf_size);