Annotation of qemu/tcg/tcg.h, revision 1.1.1.7

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: #include "tcg-target.h"
1.1.1.3   root       36: #include "tcg-runtime.h"
1.1       root       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: 
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,
                    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.
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 */
                    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) */
1.1.1.2   root      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
1.1       root      262:    safely suppressed if the return value is not used. */
                    263: #define TCG_CALL_PURE           0x0010 
1.1.1.2   root      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
1.1       root      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: 
1.1.1.4   root      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: 
1.1       root      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;
1.1.1.6   root      322:     unsigned int temp_local:1; /* If true, the temp is saved across
1.1       root      323:                                   basic blocks. Otherwise, it is not
1.1.1.6   root      324:                                   preserved across basic blocks. */
1.1       root      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 */
1.1.1.6   root      356:     uint16_t *op_dead_args; /* for each operation, each bit tells if the
                    357:                                corresponding argument is dead */
1.1       root      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
1.1.1.6   root      393: 
                    394: #ifdef CONFIG_DEBUG_TCG
                    395:     int temps_in_use;
                    396: #endif
1.1       root      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);
1.1.1.4   root      427: void tcg_prologue_init(TCGContext *s);
1.1       root      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: 
1.1.1.7 ! root      466: static inline bool tcg_arg_is_local(TCGContext *s, TCGArg arg)
        !           467: {
        !           468:     return s->temps[arg].temp_local;
        !           469: }
        !           470: 
1.1.1.6   root      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: 
1.1.1.5   root      484: void tcg_dump_info(FILE *f, fprintf_function cpu_fprintf);
1.1       root      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: 
1.1.1.7 ! root      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: };
1.1       root      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;
1.1.1.4   root      522: #if defined(CONFIG_DEBUG_TCG)
                    523:     int used;
                    524: #endif
1.1       root      525: } TCGOpDef;
1.1.1.7 ! root      526: 
        !           527: extern TCGOpDef tcg_op_defs[];
        !           528: extern const size_t tcg_op_defs_max;
        !           529: 
1.1       root      530: typedef struct TCGTargetOpDef {
1.1.1.4   root      531:     TCGOpcode op;
1.1       root      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
1.1.1.6   root      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))
1.1       root      554: #else
1.1.1.6   root      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))
1.1       root      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: 
1.1.1.7 ! root      573: TCGArg *tcg_optimize(TCGContext *s, uint16_t *tcg_opc_ptr, TCGArg *args,
        !           574:                      TCGOpDef *tcg_op_def);
        !           575: 
1.1       root      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[];
1.1.1.7 ! root      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) \
1.1.1.6   root      592:     ((long REGPARM (*)(void *, void *))code_gen_prologue)(env, tb_ptr)
1.1       root      593: #endif

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