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GeezerVison is showing github.com — mruby/include/mruby/irep.h at stable · mruby/mruby Expand file tree/ Copy pathirep.hMore file actions 143 lines (119 loc) · 3.94 KB / Copy pathirep.hFile metadata and controls143 lines (119 loc) · 3.94 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 /** ** @file mruby/irep.h - mrb_irep structure ** ** See Copyright Notice in mruby.h */ #ifndef MRUBY_IREP_H #define MRUBY_IREP_H #include "common.h" #include <mruby/compile.h> /** * Compiled mruby scripts. */ MRB_BEGIN_DECL enum irep_pool_type { IREP_TT_STR = 0, /* string (need free) */ IREP_TT_SSTR = 2, /* string (static) */ IREP_TT_INT32 = 1, /* 32-bit integer */ IREP_TT_INT64 = 3, /* 64-bit integer */ IREP_TT_BIGINT = 7, /* big integer */ IREP_TT_FLOAT = 5, /* float (double/float) */ }; #define IREP_TT_NFLAG 1 /* number (non string) flag */ #define IREP_TT_SFLAG 2 /* static string flag */ typedef struct mrb_irep_pool { uint32_t tt; /* packed type and length (for string) */ union { const char *str; int32_t i32; int64_t i64; #ifndef MRB_NO_FLOAT mrb_float f; #endif } u; } mrb_irep_pool; enum mrb_catch_type { MRB_CATCH_RESCUE = 0, MRB_CATCH_ENSURE = 1, }; struct mrb_irep_catch_handler { uint8_t type; /* enum mrb_catch_type */ uint8_t begin[4]; /* The starting address to match the handler. Includes this. */ uint8_t end[4]; /* The endpoint address that matches the handler. Not Includes this. */ uint8_t target[4]; /* The address to jump to if a match is made. */ }; /* Program data array struct */ struct mrb_irep { uint16_t nlocals; /* Number of local variables */ uint16_t nregs; /* Number of register variables */ uint16_t clen; /* Number of catch handlers */ uint8_t flags; const mrb_code *iseq; /* * A catch handler table is placed after the iseq entity. * The reason it doesn't add fields to the structure is to keep the mrb_irep * structure from bloating. The catch handler table can be obtained with * `mrb_irep_catch_handler_table(irep)`. */ const mrb_irep_pool *pool; const mrb_sym *syms; const struct mrb_irep *const *reps; const mrb_sym *lv; /* debug info */ struct mrb_irep_debug_info *debug_info; uint32_t ilen; uint16_t plen, slen; uint16_t rlen; uint16_t refcnt; }; #define MRB_ISEQ_NO_FREE 1 #define MRB_IREP_NO_FREE 2 #define MRB_IREP_STATIC (MRB_ISEQ_NO_FREE | MRB_IREP_NO_FREE) #define MRB_IREP_CONSOLIDATED 4 /* pool/syms/reps packed with irep struct */ MRB_API mrb_irep *mrb_add_irep(mrb_state *mrb); /** * load mruby bytecode functions * * Please note! Currently due to interactions with the GC calling these * functions will leak one RProc object per function call. To prevent this save * the current memory arena before calling and restore the arena right after, * like so * * int ai = mrb_gc_arena_save(mrb); * mrb_value status = mrb_load_irep(mrb, buffer); * mrb_gc_arena_restore(mrb, ai); * * Also, when called from a C function defined as a method, the current stack is * destroyed. If processing continues after this function, the objects obtained * from the arguments must be protected as needed before this function. */ /* @param [const uint8_t*] irep code, expected as a literal */ MRB_API mrb_value mrb_load_irep(mrb_state *, const uint8_t *); /* * @param [const void*] irep code * @param [size_t] size of irep buffer. */ MRB_API mrb_value mrb_load_irep_buf(mrb_state *, const void *, size_t); /* @param [const uint8_t*] irep code, expected as a literal */ MRB_API mrb_value mrb_load_irep_cxt(mrb_state *, const uint8_t *, mrbc_context *); /* * @param [const void*] irep code * @param [size_t] size of irep buffer. */ MRB_API mrb_value mrb_load_irep_buf_cxt(mrb_state *, const void *, size_t, mrbc_context *); struct mrb_insn_data { uint8_t insn; uint32_t a; uint16_t b; uint16_t c; const mrb_code *addr; }; #define mrb_irep_catch_handler_pack(n, v) uint32_to_bin(n, v) #define mrb_irep_catch_handler_unpack(v) bin_to_uint32(v) void mrb_irep_incref(mrb_state *, struct mrb_irep *); void mrb_irep_decref(mrb_state *, struct mrb_irep *); void mrb_irep_cutref(mrb_state *, struct mrb_irep *); MRB_END_DECL #endif /* MRUBY_IREP_H */ |
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