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 #include "tcg-target.h"
  36 #include "tcg-runtime.h"
  37
  38 #if TCG_TARGET_REG_BITS == 32
  39 typedef int32_t tcg_target_long;
  40 typedef uint32_t tcg_target_ulong;
  41 #define TCG_PRIlx PRIx32
  42 #define TCG_PRIld PRId32
  43 #elif TCG_TARGET_REG_BITS == 64
  44 typedef int64_t tcg_target_long;
  45 typedef uint64_t tcg_target_ulong;
  46 #define TCG_PRIlx PRIx64
  47 #define TCG_PRIld PRId64
  48 #else
  49 #error unsupported
  50 #endif
  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    expecially 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 #define TCG_CALL_TYPE_MASK      0x000f
 256 #define TCG_CALL_TYPE_STD       0x0000 /* standard C call */
 257 #define TCG_CALL_TYPE_REGPARM_1 0x0001 /* i386 style regparm call (1 reg) */
 258 #define TCG_CALL_TYPE_REGPARM_2 0x0002 /* i386 style regparm call (2 regs) */
 259 #define TCG_CALL_TYPE_REGPARM   0x0003 /* i386 style regparm call (3 regs) */
 260 /* A pure function only reads its arguments and TCG global variables
 261    and cannot raise exceptions. Hence a call to a pure function can be
 262    safely suppressed if the return value is not used. */
 263 #define TCG_CALL_PURE           0x0010
 264 /* A const function only reads its arguments and does not use TCG
 265    global variables. Hence a call to such a function does not
 266    save TCG global variables back to their canonical location. */
 267 #define TCG_CALL_CONST          0x0020
 268
 269 /* used to align parameters */
 270 #define TCG_CALL_DUMMY_TCGV     MAKE_TCGV_I32(-1)
 271 #define TCG_CALL_DUMMY_ARG      ((TCGArg)(-1))
 272
 273 typedef enum {
 274     TCG_COND_EQ,
 275     TCG_COND_NE,
 276     TCG_COND_LT,
 277     TCG_COND_GE,
 278     TCG_COND_LE,
 279     TCG_COND_GT,
 280     /* unsigned */
 281     TCG_COND_LTU,
 282     TCG_COND_GEU,
 283     TCG_COND_LEU,
 284     TCG_COND_GTU,
 285 } TCGCond;
 286
 287 /* Invert the sense of the comparison.  */
 288 static inline TCGCond tcg_invert_cond(TCGCond c)
 289 {
 290     return (TCGCond)(c ^ 1);
 291 }
 292
 293 /* Swap the operands in a comparison.  */
 294 static inline TCGCond tcg_swap_cond(TCGCond c)
 295 {
 296     int mask = (c < TCG_COND_LT ? 0 : c < TCG_COND_LTU ? 7 : 15);
 297     return (TCGCond)(c ^ mask);
 298 }
 299
 300 static inline TCGCond tcg_unsigned_cond(TCGCond c)
 301 {
 302     return (c >= TCG_COND_LT && c <= TCG_COND_GT ? c + 4 : c);
 303 }
 304
 305 #define TEMP_VAL_DEAD  0
 306 #define TEMP_VAL_REG   1
 307 #define TEMP_VAL_MEM   2
 308 #define TEMP_VAL_CONST 3
 309
 310 /* XXX: optimize memory layout */
 311 typedef struct TCGTemp {
 312     TCGType base_type;
 313     TCGType type;
 314     int val_type;
 315     int reg;
 316     tcg_target_long val;
 317     int mem_reg;
 318     tcg_target_long mem_offset;
 319     unsigned int fixed_reg:1;
 320     unsigned int mem_coherent:1;
 321     unsigned int mem_allocated:1;
 322     unsigned int temp_local:1; /* If true, the temp is saved across
 323                                   basic blocks. Otherwise, it is not
 324                                   preserved across basic blocks. */
 325     unsigned int temp_allocated:1; /* never used for code gen */
 326     /* index of next free temp of same base type, -1 if end */
 327     int next_free_temp;
 328     const char *name;
 329 } TCGTemp;
 330
 331 typedef struct TCGHelperInfo {
 332     tcg_target_ulong func;
 333     const char *name;
 334 } TCGHelperInfo;
 335
 336 typedef struct TCGContext TCGContext;
 337
 338 struct TCGContext {
 339     uint8_t *pool_cur, *pool_end;
 340     TCGPool *pool_first, *pool_current;
 341     TCGLabel *labels;
 342     int nb_labels;
 343     TCGTemp *temps; /* globals first, temps after */
 344     int nb_globals;
 345     int nb_temps;
 346     /* index of free temps, -1 if none */
 347     int first_free_temp[TCG_TYPE_COUNT * 2];
 348
 349     /* goto_tb support */
 350     uint8_t *code_buf;
 351     unsigned long *tb_next;
 352     uint16_t *tb_next_offset;
 353     uint16_t *tb_jmp_offset; /* != NULL if USE_DIRECT_JUMP */
 354
 355     /* liveness analysis */
 356     uint16_t *op_dead_args; /* for each operation, each bit tells if the
 357                                corresponding argument is dead */
 358
 359     /* tells in which temporary a given register is. It does not take
 360        into account fixed registers */
 361     int reg_to_temp[TCG_TARGET_NB_REGS];
 362     TCGRegSet reserved_regs;
 363     tcg_target_long current_frame_offset;
 364     tcg_target_long frame_start;
 365     tcg_target_long frame_end;
 366     int frame_reg;
 367
 368     uint8_t *code_ptr;
 369     TCGTemp static_temps[TCG_MAX_TEMPS];
 370
 371     TCGHelperInfo *helpers;
 372     int nb_helpers;
 373     int allocated_helpers;
 374     int helpers_sorted;
 375
 376 #ifdef CONFIG_PROFILER
 377     /* profiling info */
 378     int64_t tb_count1;
 379     int64_t tb_count;
 380     int64_t op_count; /* total insn count */
 381     int op_count_max; /* max insn per TB */
 382     int64_t temp_count;
 383     int temp_count_max;
 384     int64_t del_op_count;
 385     int64_t code_in_len;
 386     int64_t code_out_len;
 387     int64_t interm_time;
 388     int64_t code_time;
 389     int64_t la_time;
 390     int64_t restore_count;
 391     int64_t restore_time;
 392 #endif
 393
 394 #ifdef CONFIG_DEBUG_TCG
 395     int temps_in_use;
 396 #endif
 397 };
 398
 399 extern TCGContext tcg_ctx;
 400 extern uint16_t *gen_opc_ptr;
 401 extern TCGArg *gen_opparam_ptr;
 402 extern uint16_t gen_opc_buf[];
 403 extern TCGArg gen_opparam_buf[];
 404
 405 /* pool based memory allocation */
 406
 407 void *tcg_malloc_internal(TCGContext *s, int size);
 408 void tcg_pool_reset(TCGContext *s);
 409 void tcg_pool_delete(TCGContext *s);
 410
 411 static inline void *tcg_malloc(int size)
 412 {
 413     TCGContext *s = &tcg_ctx;
 414     uint8_t *ptr, *ptr_end;
 415     size = (size + sizeof(long) - 1) & ~(sizeof(long) - 1);
 416     ptr = s->pool_cur;
 417     ptr_end = ptr + size;
 418     if (unlikely(ptr_end > s->pool_end)) {
 419         return tcg_malloc_internal(&tcg_ctx, size);
 420     } else {
 421         s->pool_cur = ptr_end;
 422         return ptr;
 423     }
 424 }
 425
 426 void tcg_context_init(TCGContext *s);
 427 void tcg_prologue_init(TCGContext *s);
 428 void tcg_func_start(TCGContext *s);
 429
 430 int tcg_gen_code(TCGContext *s, uint8_t *gen_code_buf);
 431 int tcg_gen_code_search_pc(TCGContext *s, uint8_t *gen_code_buf, long offset);
 432
 433 void tcg_set_frame(TCGContext *s, int reg,
 434                    tcg_target_long start, tcg_target_long size);
 435
 436 TCGv_i32 tcg_global_reg_new_i32(int reg, const char *name);
 437 TCGv_i32 tcg_global_mem_new_i32(int reg, tcg_target_long offset,
 438                                 const char *name);
 439 TCGv_i32 tcg_temp_new_internal_i32(int temp_local);
 440 static inline TCGv_i32 tcg_temp_new_i32(void)
 441 {
 442     return tcg_temp_new_internal_i32(0);
 443 }
 444 static inline TCGv_i32 tcg_temp_local_new_i32(void)
 445 {
 446     return tcg_temp_new_internal_i32(1);
 447 }
 448 void tcg_temp_free_i32(TCGv_i32 arg);
 449 char *tcg_get_arg_str_i32(TCGContext *s, char *buf, int buf_size, TCGv_i32 arg);
 450
 451 TCGv_i64 tcg_global_reg_new_i64(int reg, const char *name);
 452 TCGv_i64 tcg_global_mem_new_i64(int reg, tcg_target_long offset,
 453                                 const char *name);
 454 TCGv_i64 tcg_temp_new_internal_i64(int temp_local);
 455 static inline TCGv_i64 tcg_temp_new_i64(void)
 456 {
 457     return tcg_temp_new_internal_i64(0);
 458 }
 459 static inline TCGv_i64 tcg_temp_local_new_i64(void)
 460 {
 461     return tcg_temp_new_internal_i64(1);
 462 }
 463 void tcg_temp_free_i64(TCGv_i64 arg);
 464 char *tcg_get_arg_str_i64(TCGContext *s, char *buf, int buf_size, TCGv_i64 arg);
 465
 466 static inline bool tcg_arg_is_local(TCGContext *s, TCGArg arg)
 467 {
 468     return s->temps[arg].temp_local;
 469 }
 470
 471 #if defined(CONFIG_DEBUG_TCG)
 472 /* If you call tcg_clear_temp_count() at the start of a section of
 473  * code which is not supposed to leak any TCG temporaries, then
 474  * calling tcg_check_temp_count() at the end of the section will
 475  * return 1 if the section did in fact leak a temporary.
 476  */
 477 void tcg_clear_temp_count(void);
 478 int tcg_check_temp_count(void);
 479 #else
 480 #define tcg_clear_temp_count() do { } while (0)
 481 #define tcg_check_temp_count() 0
 482 #endif
 483
 484 void tcg_dump_info(FILE *f, fprintf_function cpu_fprintf);
 485
 486 #define TCG_CT_ALIAS  0x80
 487 #define TCG_CT_IALIAS 0x40
 488 #define TCG_CT_REG    0x01
 489 #define TCG_CT_CONST  0x02 /* any constant of register size */
 490
 491 typedef struct TCGArgConstraint {
 492     uint16_t ct;
 493     uint8_t alias_index;
 494     union {
 495         TCGRegSet regs;
 496     } u;
 497 } TCGArgConstraint;
 498
 499 #define TCG_MAX_OP_ARGS 16
 500
 501 /* Bits for TCGOpDef->flags, 8 bits available.  */
 502 enum {
 503     /* Instruction defines the end of a basic block.  */
 504     TCG_OPF_BB_END       = 0x01,
 505     /* Instruction clobbers call registers and potentially update globals.  */
 506     TCG_OPF_CALL_CLOBBER = 0x02,
 507     /* Instruction has side effects: it cannot be removed
 508        if its outputs are not used.  */
 509     TCG_OPF_SIDE_EFFECTS = 0x04,
 510     /* Instruction operands are 64-bits (otherwise 32-bits).  */
 511     TCG_OPF_64BIT        = 0x08,
 512     /* Instruction is optional and not implemented by the host.  */
 513     TCG_OPF_NOT_PRESENT  = 0x10,
 514 };
 515
 516 typedef struct TCGOpDef {
 517     const char *name;
 518     uint8_t nb_oargs, nb_iargs, nb_cargs, nb_args;
 519     uint8_t flags;
 520     TCGArgConstraint *args_ct;
 521     int *sorted_args;
 522 #if defined(CONFIG_DEBUG_TCG)
 523     int used;
 524 #endif
 525 } TCGOpDef;
 526
 527 extern TCGOpDef tcg_op_defs[];
 528 extern const size_t tcg_op_defs_max;
 529
 530 typedef struct TCGTargetOpDef {
 531     TCGOpcode op;
 532     const char *args_ct_str[TCG_MAX_OP_ARGS];
 533 } TCGTargetOpDef;
 534
 535 #define tcg_abort() \
 536 do {\
 537     fprintf(stderr, "%s:%d: tcg fatal error\n", __FILE__, __LINE__);\
 538     abort();\
 539 } while (0)
 540
 541 void tcg_add_target_add_op_defs(const TCGTargetOpDef *tdefs);
 542
 543 #if TCG_TARGET_REG_BITS == 32
 544 #define TCGV_NAT_TO_PTR(n) MAKE_TCGV_PTR(GET_TCGV_I32(n))
 545 #define TCGV_PTR_TO_NAT(n) MAKE_TCGV_I32(GET_TCGV_PTR(n))
 546
 547 #define tcg_const_ptr(V) TCGV_NAT_TO_PTR(tcg_const_i32(V))
 548 #define tcg_global_reg_new_ptr(R, N) \
 549     TCGV_NAT_TO_PTR(tcg_global_reg_new_i32((R), (N)))
 550 #define tcg_global_mem_new_ptr(R, O, N) \
 551     TCGV_NAT_TO_PTR(tcg_global_mem_new_i32((R), (O), (N)))
 552 #define tcg_temp_new_ptr() TCGV_NAT_TO_PTR(tcg_temp_new_i32())
 553 #define tcg_temp_free_ptr(T) tcg_temp_free_i32(TCGV_PTR_TO_NAT(T))
 554 #else
 555 #define TCGV_NAT_TO_PTR(n) MAKE_TCGV_PTR(GET_TCGV_I64(n))
 556 #define TCGV_PTR_TO_NAT(n) MAKE_TCGV_I64(GET_TCGV_PTR(n))
 557
 558 #define tcg_const_ptr(V) TCGV_NAT_TO_PTR(tcg_const_i64(V))
 559 #define tcg_global_reg_new_ptr(R, N) \
 560     TCGV_NAT_TO_PTR(tcg_global_reg_new_i64((R), (N)))
 561 #define tcg_global_mem_new_ptr(R, O, N) \
 562     TCGV_NAT_TO_PTR(tcg_global_mem_new_i64((R), (O), (N)))
 563 #define tcg_temp_new_ptr() TCGV_NAT_TO_PTR(tcg_temp_new_i64())
 564 #define tcg_temp_free_ptr(T) tcg_temp_free_i64(TCGV_PTR_TO_NAT(T))
 565 #endif
 566
 567 void tcg_gen_callN(TCGContext *s, TCGv_ptr func, unsigned int flags,
 568                    int sizemask, TCGArg ret, int nargs, TCGArg *args);
 569
 570 void tcg_gen_shifti_i64(TCGv_i64 ret, TCGv_i64 arg1,
 571                         int c, int right, int arith);
 572
 573 TCGArg *tcg_optimize(TCGContext *s, uint16_t *tcg_opc_ptr, TCGArg *args,
 574                      TCGOpDef *tcg_op_def);
 575
 576 /* only used for debugging purposes */
 577 void tcg_register_helper(void *func, const char *name);
 578 const char *tcg_helper_get_name(TCGContext *s, void *func);
 579 void tcg_dump_ops(TCGContext *s, FILE *outfile);
 580
 581 void dump_ops(const uint16_t *opc_buf, const TCGArg *opparam_buf);
 582 TCGv_i32 tcg_const_i32(int32_t val);
 583 TCGv_i64 tcg_const_i64(int64_t val);
 584 TCGv_i32 tcg_const_local_i32(int32_t val);
 585 TCGv_i64 tcg_const_local_i64(int64_t val);
 586
 587 extern uint8_t code_gen_prologue[];
 588
 589 /* TCG targets may use a different definition of tcg_qemu_tb_exec. */
 590 #if !defined(tcg_qemu_tb_exec)
 591 # define tcg_qemu_tb_exec(env, tb_ptr) \
 592     ((long REGPARM (*)(void *, void *))code_gen_prologue)(env, tb_ptr)
 593 #endif