Annotation of qemu/tcg/tcg.h, revision 1.1.1.8

1.1       root        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:  */
1.1.1.2   root       24: #include "qemu-common.h"
1.1.1.7   root       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: 
1.1       root       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: 
1.1.1.8 ! root       49: #include "tcg-target.h"
        !            50: #include "tcg-runtime.h"
        !            51: 
1.1       root       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: 
1.1.1.7   root       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: 
1.1.1.4   root      103: typedef enum TCGOpcode {
                    104: #define DEF(name, oargs, iargs, cargs, flags) INDEX_op_ ## name,
1.1       root      105: #include "tcg-opc.h"
                    106: #undef DEF
                    107:     NB_OPS,
1.1.1.4   root      108: } TCGOpcode;
1.1       root      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)
1.1.1.3   root      113: #define tcg_regset_set_reg(d, r) (d) |= 1L << (r)
                    114: #define tcg_regset_reset_reg(d, r) (d) &= ~(1L << (r))
1.1       root      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: 
1.1.1.4   root      152: typedef enum TCGType {
                    153:     TCG_TYPE_I32,
                    154:     TCG_TYPE_I64,
                    155:     TCG_TYPE_COUNT, /* number of different types */
1.1       root      156: 
1.1.1.4   root      157:     /* An alias for the size of the host register.  */
1.1       root      158: #if TCG_TARGET_REG_BITS == 32
1.1.1.4   root      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,
1.1       root      171: #else
1.1.1.4   root      172:     TCG_TYPE_TL = TCG_TYPE_I32,
1.1       root      173: #endif
1.1.1.4   root      174: } TCGType;
1.1       root      175: 
                    176: typedef tcg_target_ulong TCGArg;
                    177: 
1.1.1.7   root      178: /* Define a type and accessor macros for variables.  Using a struct is
1.1       root      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,
1.1.1.8 ! root      181:    especially on targets with braindamaged ABIs (e.g. i386).
1.1       root      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.
1.1.1.6   root      185:    In addition we do typechecking for different types of variables.  TCGv_i32
1.1       root      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: 
1.1.1.3   root      190: #ifdef CONFIG_DEBUG_TCG
1.1.1.2   root      191: #define DEBUG_TCGV 1
                    192: #endif
1.1       root      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: 
1.1.1.6   root      206: typedef struct {
                    207:     int iptr;
                    208: } TCGv_ptr;
                    209: 
1.1       root      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;})
1.1.1.6   root      214: #define MAKE_TCGV_PTR(i) __extension__                  \
                    215:     ({ TCGv_ptr make_tcgv_tmp = {i}; make_tcgv_tmp; })
1.1       root      216: #define GET_TCGV_I32(t) ((t).i32)
                    217: #define GET_TCGV_I64(t) ((t).i64)
1.1.1.6   root      218: #define GET_TCGV_PTR(t) ((t).iptr)
1.1       root      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;
1.1.1.6   root      228: #if TCG_TARGET_REG_BITS == 32
                    229: #define TCGv_ptr TCGv_i32
                    230: #else
                    231: #define TCGv_ptr TCGv_i64
                    232: #endif
1.1       root      233: #define MAKE_TCGV_I32(x) (x)
                    234: #define MAKE_TCGV_I64(x) (x)
1.1.1.6   root      235: #define MAKE_TCGV_PTR(x) (x)
1.1       root      236: #define GET_TCGV_I32(t) (t)
                    237: #define GET_TCGV_I64(t) (t)
1.1.1.6   root      238: #define GET_TCGV_PTR(t) (t)
1.1.1.2   root      239: 
1.1       root      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: 
1.1.1.2   root      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: 
1.1       root      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 */
1.1.1.2   root      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
1.1       root      257:    safely suppressed if the return value is not used. */
                    258: #define TCG_CALL_PURE           0x0010 
1.1.1.2   root      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
1.1       root      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: 
1.1.1.4   root      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: 
1.1       root      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;
1.1.1.6   root      317:     unsigned int temp_local:1; /* If true, the temp is saved across
1.1       root      318:                                   basic blocks. Otherwise, it is not
1.1.1.6   root      319:                                   preserved across basic blocks. */
1.1       root      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;
1.1.1.8 ! root      335:     TCGPool *pool_first, *pool_current, *pool_first_large;
1.1       root      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 */
1.1.1.6   root      351:     uint16_t *op_dead_args; /* for each operation, each bit tells if the
                    352:                                corresponding argument is dead */
1.1       root      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
1.1.1.6   root      388: 
                    389: #ifdef CONFIG_DEBUG_TCG
                    390:     int temps_in_use;
                    391: #endif
1.1       root      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);
1.1.1.4   root      422: void tcg_prologue_init(TCGContext *s);
1.1       root      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: 
1.1.1.7   root      461: static inline bool tcg_arg_is_local(TCGContext *s, TCGArg arg)
                    462: {
                    463:     return s->temps[arg].temp_local;
                    464: }
                    465: 
1.1.1.6   root      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: 
1.1.1.5   root      479: void tcg_dump_info(FILE *f, fprintf_function cpu_fprintf);
1.1       root      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: 
1.1.1.7   root      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: };
1.1       root      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;
1.1.1.4   root      517: #if defined(CONFIG_DEBUG_TCG)
                    518:     int used;
                    519: #endif
1.1       root      520: } TCGOpDef;
1.1.1.7   root      521: 
                    522: extern TCGOpDef tcg_op_defs[];
                    523: extern const size_t tcg_op_defs_max;
                    524: 
1.1       root      525: typedef struct TCGTargetOpDef {
1.1.1.4   root      526:     TCGOpcode op;
1.1       root      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
1.1.1.6   root      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: 
1.1.1.8 ! root      542: #define tcg_const_ptr(V) TCGV_NAT_TO_PTR(tcg_const_i32((tcg_target_long)(V)))
1.1.1.6   root      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))
1.1       root      549: #else
1.1.1.6   root      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: 
1.1.1.8 ! root      553: #define tcg_const_ptr(V) TCGV_NAT_TO_PTR(tcg_const_i64((tcg_target_long)(V)))
1.1.1.6   root      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))
1.1       root      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: 
1.1.1.7   root      568: TCGArg *tcg_optimize(TCGContext *s, uint16_t *tcg_opc_ptr, TCGArg *args,
                    569:                      TCGOpDef *tcg_op_def);
                    570: 
1.1       root      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[];
1.1.1.7   root      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) \
1.1.1.8 ! root      587:     ((tcg_target_ulong (*)(void *, void *))code_gen_prologue)(env, tb_ptr)
1.1       root      588: #endif
1.1.1.8 ! root      589: 
        !           590: void tcg_register_jit(void *buf, size_t buf_size);

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