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Increase symbol bit size on 32-bit mode with MRB_WORD_BOXING

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This change increases the max length of lower inline symbols to 5 bytes.
This commit is contained in:
KOBAYASHI Shuji
2019-09-07 21:38:11 +09:00
parent bb7eccc9c4
commit 17c53040ab
1 changed files with 21 additions and 11 deletions
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include/mruby/boxing_word.h
+21 -11
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@@ -27,21 +27,20 @@ struct RCptr {
void *p;
};
#define MRB_FIXNUM_SHIFT 1
enum mrb_special_consts {
MRB_Qnil = 0,
MRB_Qfalse = 2,
MRB_Qtrue = 4,
MRB_Qundef = 6,
MRB_Qnil = 0,
MRB_Qfalse = 4,
MRB_Qtrue = 12,
MRB_Qundef = 20,
};
#define MRB_FIXNUM_SHIFT 1
#define MRB_SYMBOL_SHIFT 2
#define MRB_FIXNUM_FLAG (1 << (MRB_FIXNUM_SHIFT - 1))
#define MRB_SYMBOL_FLAG (1 << (MRB_SYMBOL_SHIFT - 1))
#define MRB_FIXNUM_MASK ((1 << MRB_FIXNUM_SHIFT) - 1)
#define MRB_SYMBOL_MASK ((1 << MRB_SYMBOL_SHIFT) - 1)
#define MRB_IMMEDIATE_MASK 0x07
#define MRB_FIXNUM_MASK 0x01
#define MRB_SYMBOL_MASK 0x0f
#define MRB_FIXNUM_FLAG 0x01
#define MRB_SYMBOL_FLAG 0x0e
#define MRB_SYMBOL_SHIFT 8
#ifdef MRB_64BIT
#define MRB_SYMBOL_BITSIZE (sizeof(mrb_sym) * CHAR_BIT)
@@ -58,6 +57,17 @@ enum mrb_special_consts {
#define BOXWORD_SHIFT_VALUE_P(o,n) \
(((o).w & MRB_##n##_MASK) == MRB_##n##_FLAG)
/*
* mrb_value representation:
*
* nil : ...0000 0000 (all bits are zero)
* false : ...0000 0100
* true : ...0000 1100
* undef : ...0001 0100
* fixnum: ...IIII III1
* symbol: ...SSSS SS10 (high-order 32-bit are symbol value in 64-bit mode)
* object: ...PPPP P000
*/
typedef union mrb_value {
union {
void *p;