summaryrefslogtreecommitdiff
path: root/vm_evalbody.ci
blob: fb86ecb0b818c22ddc36b73e162d24dc1eb533f3 (plain)
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
/* -*-c-*- */
/**********************************************************************

  vm_evalbody.ci -

  $Author$
  $Date$

  Copyright (C) 2004-2006 Koichi Sasada

**********************************************************************/

#include <math.h>

#if VMDEBUG > 0
#define DECL_SC_REG(type, r, reg) register type reg_##r

#elif __GNUC__ && __x86_64
#define DECL_SC_REG(type, r, reg) register type reg_##r asm("r" reg)

#elif __GNUC__ && __i386__
#define DECL_SC_REG(type, r, reg) register type reg_##r asm("e" reg)

#else
#define DECL_SC_REG(type, r, reg) register type reg_##r
#endif
// #define DECL_SC_REG(r, reg) VALUE reg_##r

typedef yarv_iseq_t *ISEQ;

#if !OPT_CALL_THREADED_CODE
VALUE
th_eval(yarv_thread_t *th, VALUE initial)
{

#if OPT_STACK_CACHING
#if 0
#elif __GNUC__ && __x86_64
    DECL_SC_REG(VALUE, a, "12");
    DECL_SC_REG(VALUE, b, "13");
#else
    register VALUE reg_a;
    register VALUE reg_b;
#endif
#endif

#if __GNUC__ && __i386__
    DECL_SC_REG(VALUE *, pc, "di");
    DECL_SC_REG(yarv_control_frame_t *, cfp, "si");
#define USE_MACHINE_REGS 1

#elif __GNUC__ && __x86_64__
    DECL_SC_REG(VALUE *, pc, "14");
    DECL_SC_REG(yarv_control_frame_t *, cfp, "15");
#define USE_MACHINE_REGS 1

#else
    register yarv_control_frame_t *reg_cfp;
    VALUE *reg_pc;
#endif

#if USE_MACHINE_REGS

#undef  RESTORE_REGS
#define RESTORE_REGS() \
{ \
  REG_CFP = th->cfp; \
  reg_pc  = reg_cfp->pc; \
}

#undef  REG_PC
#define REG_PC reg_pc
#undef  GET_PC
#define GET_PC() (reg_pc)
#undef  SET_PC
#define SET_PC(x) (reg_cfp->pc = REG_PC = (x))
#endif

    ID tmp_id;
    yarv_block_t *tmp_blockptr;
    num_t tmp_num;

#if OPT_TOKEN_THREADED_CODE || OPT_DIRECT_THREADED_CODE
#include "vmtc.inc"
    if (th == 0) {
#if OPT_STACK_CACHING
	yarv_finish_insn_seq[0] = (VALUE)&&LABEL (finish_SC_ax_ax);
#else
	yarv_finish_insn_seq[0] = (VALUE)&&LABEL (finish);
#endif
	return (VALUE)insns_address_table;
    }
#endif
    reg_cfp = th->cfp;
    reg_pc = reg_cfp->pc;

#if OPT_STACK_CACHING
    reg_a = initial;
    reg_b = 0;
#endif

  first:
    INSN_DISPATCH();
  /******************/
#include "vm.inc"
  /******************/
    END_INSNS_DISPATCH();

    /* unreachable */
    rb_bug("th_eval_iseq: unreachable");
    return Qundef;
}

#else

#include "vm.inc"
#include "vmtc.inc"

void **
get_insns_address_table()
{
    return (void **)insns_address_table;
}

VALUE
th_eval(yarv_thread_t *th, VALUE initial)
{
    register yarv_control_frame_t *reg_cfp = th->cfp;
    SET_PC(reg_cfp->iseq->iseq_encoded);

    while (*GET_PC()) {
	reg_cfp = ((insn_func_type) (*GET_PC()))(th, reg_cfp);
    }
    {
	VALUE ret = *--reg_cfp->sp;
	th->cfp--;
	return ret;
    }
}
#endif