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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/*
** Stack frames.
** Copyright (C) 2005-2011 Mike Pall. See Copyright Notice in luajit.h
*/
#ifndef _LJ_FRAME_H
#define _LJ_FRAME_H
#include "lj_obj.h"
#include "lj_bc.h"
/* -- Lua stack frame ----------------------------------------------------- */
/* Frame type markers in callee function slot (callee base-1). */
enum {
FRAME_LUA, FRAME_C, FRAME_CONT, FRAME_VARG,
FRAME_LUAP, FRAME_CP, FRAME_PCALL, FRAME_PCALLH
};
#define FRAME_TYPE 3
#define FRAME_P 4
#define FRAME_TYPEP (FRAME_TYPE|FRAME_P)
/* Macros to access and modify Lua frames. */
#define frame_gc(f) (gcref((f)->fr.func))
#define frame_func(f) (&frame_gc(f)->fn)
#define frame_ftsz(f) ((f)->fr.tp.ftsz)
#define frame_type(f) (frame_ftsz(f) & FRAME_TYPE)
#define frame_typep(f) (frame_ftsz(f) & FRAME_TYPEP)
#define frame_islua(f) (frame_type(f) == FRAME_LUA)
#define frame_isc(f) (frame_type(f) == FRAME_C)
#define frame_iscont(f) (frame_typep(f) == FRAME_CONT)
#define frame_isvarg(f) (frame_typep(f) == FRAME_VARG)
#define frame_ispcall(f) ((frame_ftsz(f) & 6) == FRAME_PCALL)
#define frame_pc(f) (mref((f)->fr.tp.pcr, const BCIns))
#define frame_contpc(f) (frame_pc((f)-1))
#if LJ_64
#define frame_contf(f) \
((ASMFunction)(void *)((intptr_t)lj_vm_asm_begin + \
(intptr_t)(int32_t)((f)-1)->u32.lo))
#else
#define frame_contf(f) ((ASMFunction)gcrefp(((f)-1)->gcr, void))
#endif
#define frame_delta(f) (frame_ftsz(f) >> 3)
#define frame_sized(f) (frame_ftsz(f) & ~FRAME_TYPEP)
#define frame_prevl(f) ((f) - (1+bc_a(frame_pc(f)[-1])))
#define frame_prevd(f) ((TValue *)((char *)(f) - frame_sized(f)))
#define frame_prev(f) (frame_islua(f)?frame_prevl(f):frame_prevd(f))
/* Note: this macro does not skip over FRAME_VARG. */
#define setframe_pc(f, pc) (setmref((f)->fr.tp.pcr, (pc)))
#define setframe_ftsz(f, sz) ((f)->fr.tp.ftsz = (sz))
#define setframe_gc(f, p) (setgcref((f)->fr.func, (p)))
/* -- C stack frame ------------------------------------------------------- */
/* Macros to access and modify the C stack frame chain. */
/* These definitions must match with the arch-specific *.dasc files. */
#if LJ_TARGET_X86
#define CFRAME_OFS_ERRF (15*4)
#define CFRAME_OFS_NRES (14*4)
#define CFRAME_OFS_PREV (13*4)
#define CFRAME_OFS_L (12*4)
#define CFRAME_OFS_PC (6*4)
#define CFRAME_OFS_MULTRES (5*4)
#define CFRAME_SIZE (12*4)
#define CFRAME_SHIFT_MULTRES 0
#elif LJ_TARGET_X64
#if LJ_ABI_WIN
#define CFRAME_OFS_PREV (13*8)
#define CFRAME_OFS_PC (25*4)
#define CFRAME_OFS_L (24*4)
#define CFRAME_OFS_ERRF (23*4)
#define CFRAME_OFS_NRES (22*4)
#define CFRAME_OFS_MULTRES (21*4)
#define CFRAME_SIZE (10*8)
#define CFRAME_SIZE_JIT (CFRAME_SIZE + 9*16 + 4*8)
#define CFRAME_SHIFT_MULTRES 0
#else
#define CFRAME_OFS_PREV (4*8)
#define CFRAME_OFS_PC (7*4)
#define CFRAME_OFS_L (6*4)
#define CFRAME_OFS_ERRF (5*4)
#define CFRAME_OFS_NRES (4*4)
#define CFRAME_OFS_MULTRES (1*4)
#define CFRAME_SIZE (10*8)
#define CFRAME_SIZE_JIT (CFRAME_SIZE + 16)
#define CFRAME_SHIFT_MULTRES 0
#endif
#elif LJ_TARGET_ARM
#define CFRAME_OFS_ERRF 24
#define CFRAME_OFS_NRES 20
#define CFRAME_OFS_PREV 16
#define CFRAME_OFS_L 12
#define CFRAME_OFS_PC 8
#define CFRAME_OFS_MULTRES 4
#define CFRAME_SIZE 64
#define CFRAME_SHIFT_MULTRES 3
#elif LJ_TARGET_PPC
#define CFRAME_OFS_ERRF 48
#define CFRAME_OFS_NRES 44
#define CFRAME_OFS_PREV 40
#define CFRAME_OFS_L 36
#define CFRAME_OFS_PC 32
#define CFRAME_OFS_MULTRES 28
#define CFRAME_SIZE 272
#define CFRAME_SHIFT_MULTRES 3
#elif LJ_TARGET_PPCSPE
#define CFRAME_OFS_ERRF 28
#define CFRAME_OFS_NRES 24
#define CFRAME_OFS_PREV 20
#define CFRAME_OFS_L 16
#define CFRAME_OFS_PC 12
#define CFRAME_OFS_MULTRES 8
#define CFRAME_SIZE 184
#define CFRAME_SHIFT_MULTRES 3
#elif LJ_TARGET_MIPS
/* NYI: Dummy definitions for now. */
#define CFRAME_OFS_ERRF 0
#define CFRAME_OFS_NRES 0
#define CFRAME_OFS_PREV 0
#define CFRAME_OFS_L 0
#define CFRAME_OFS_PC 0
#define CFRAME_OFS_MULTRES 0
#define CFRAME_SIZE 256
#define CFRAME_SHIFT_MULTRES 3
#else
#error "Missing CFRAME_* definitions for this architecture"
#endif
#ifndef CFRAME_SIZE_JIT
#define CFRAME_SIZE_JIT CFRAME_SIZE
#endif
#define CFRAME_RESUME 1
#define CFRAME_UNWIND_FF 2 /* Only used in unwinder. */
#define CFRAME_RAWMASK (~(intptr_t)(CFRAME_RESUME|CFRAME_UNWIND_FF))
#define cframe_errfunc(cf) (*(int32_t *)(((char *)(cf))+CFRAME_OFS_ERRF))
#define cframe_nres(cf) (*(int32_t *)(((char *)(cf))+CFRAME_OFS_NRES))
#define cframe_prev(cf) (*(void **)(((char *)(cf))+CFRAME_OFS_PREV))
#define cframe_multres(cf) (*(uint32_t *)(((char *)(cf))+CFRAME_OFS_MULTRES))
#define cframe_multres_n(cf) (cframe_multres((cf)) >> CFRAME_SHIFT_MULTRES)
#define cframe_L(cf) \
(&gcref(*(GCRef *)(((char *)(cf))+CFRAME_OFS_L))->th)
#define cframe_pc(cf) \
(mref(*(MRef *)(((char *)(cf))+CFRAME_OFS_PC), const BCIns))
#define setcframe_L(cf, L) \
(setmref(*(MRef *)(((char *)(cf))+CFRAME_OFS_L), (L)))
#define setcframe_pc(cf, pc) \
(setmref(*(MRef *)(((char *)(cf))+CFRAME_OFS_PC), (pc)))
#define cframe_canyield(cf) ((intptr_t)(cf) & CFRAME_RESUME)
#define cframe_unwind_ff(cf) ((intptr_t)(cf) & CFRAME_UNWIND_FF)
#define cframe_raw(cf) ((void *)((intptr_t)(cf) & CFRAME_RAWMASK))
#define cframe_Lpc(L) cframe_pc(cframe_raw(L->cframe))
#endif
|
