Node.js  v8.x
Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine
v8abbr.h
Go to the documentation of this file.
1 
23 /*
24  * This header defines short names for V8 constants for use by the ustack
25  * helper.
26  */
27 
28 #ifndef SRC_V8ABBR_H_
29 #define SRC_V8ABBR_H_
30 
31 /* Frame pointer offsets */
32 #define V8_OFF_FP_FUNC V8DBG_OFF_FP_FUNCTION
33 #define V8_OFF_FP_CONTEXT V8DBG_OFF_FP_CONTEXT
34 #define V8_OFF_FP_MARKER V8DBG_OFF_FP_MARKER
35 
36 /* Stack frame types */
37 #define V8_FT_ENTRY V8DBG_FRAMETYPE_ENTRYFRAME
38 #define V8_FT_ENTRYCONSTRUCT V8DBG_FRAMETYPE_ENTRYCONSTRUCTFRAME
39 #define V8_FT_EXIT V8DBG_FRAMETYPE_EXITFRAME
40 #define V8_FT_JAVASCRIPT V8DBG_FRAMETYPE_JAVASCRIPTFRAME
41 #define V8_FT_OPTIMIZED V8DBG_FRAMETYPE_OPTIMIZEDFRAME
42 #define V8_FT_INTERNAL V8DBG_FRAMETYPE_INTERNALFRAME
43 #define V8_FT_CONSTRUCT V8DBG_FRAMETYPE_CONSTRUCTFRAME
44 #define V8_FT_ADAPTOR V8DBG_FRAMETYPE_ARGUMENTSADAPTORFRAME
45 #define V8_FT_STUB V8DBG_FRAMETYPE_STUBFRAME
46 
47 /* Identification masks and tags */
48 #define V8_SmiTagMask (V8DBG_SMITAGMASK)
49 #define V8_SmiTag (V8DBG_SMITAG)
50 #define V8_SmiValueShift (V8DBG_SMISHIFTSIZE + V8DBG_SMITAGMASK)
51 
52 #define V8_HeapObjectTagMask V8DBG_HEAPOBJECTTAGMASK
53 #define V8_HeapObjectTag V8DBG_HEAPOBJECTTAG
54 
55 #define V8_IsNotStringMask V8DBG_ISNOTSTRINGMASK
56 #define V8_StringTag V8DBG_STRINGTAG
57 
58 #define V8_StringEncodingMask V8DBG_STRINGENCODINGMASK
59 #define V8_AsciiStringTag V8DBG_ONEBYTESTRINGTAG
60 
61 #define V8_StringRepresentationMask V8DBG_STRINGREPRESENTATIONMASK
62 #define V8_SeqStringTag V8DBG_SEQSTRINGTAG
63 #define V8_ConsStringTag V8DBG_CONSSTRINGTAG
64 #define V8_ExternalStringTag V8DBG_EXTERNALSTRINGTAG
65 
66 /* Instance types */
67 #define V8_IT_FIXEDARRAY V8DBG_TYPE_FIXEDARRAY__FIXED_ARRAY_TYPE
68 #define V8_IT_CODE V8DBG_TYPE_CODE__CODE_TYPE
69 #define V8_IT_SCRIPT V8DBG_TYPE_SCRIPT__SCRIPT_TYPE
70 
71 /* Node-specific offsets */
72 #define NODE_OFF_EXTSTR_DATA sizeof(void*)
73 
74 /*
75  * Not all versions of V8 have the offset for the "chars" array in the
76  * SeqTwoByteString class, but it's the same as the one for SeqOneByteString.
77  */
78 #ifndef V8DBG_CLASS_SEQTWOBYTESTRING__CHARS__CHAR
79 #define V8DBG_CLASS_SEQTWOBYTESTRING__CHARS__CHAR \
80  V8DBG_CLASS_SEQONEBYTESTRING__CHARS__CHAR
81 #endif
82 
83 /* Heap class->field offsets */
84 #define V8_OFF_HEAP(off) ((off) - 1)
85 
86 #define V8_OFF_FUNC_SHARED \
87  V8_OFF_HEAP(V8DBG_CLASS_JSFUNCTION__SHARED__SHAREDFUNCTIONINFO)
88 #define V8_OFF_SHARED_NAME \
89  V8_OFF_HEAP(V8DBG_CLASS_SHAREDFUNCTIONINFO__NAME__OBJECT)
90 #define V8_OFF_SHARED_IDENT \
91  V8_OFF_HEAP(V8DBG_CLASS_SHAREDFUNCTIONINFO__FUNCTION_IDENTIFIER__OBJECT)
92 #define V8_OFF_SHARED_SCRIPT \
93  V8_OFF_HEAP(V8DBG_CLASS_SHAREDFUNCTIONINFO__SCRIPT__OBJECT)
94 #define V8_OFF_SHARED_FUNTOK \
95  V8_OFF_HEAP(V8DBG_CLASS_SHAREDFUNCTIONINFO__FUNCTION_TOKEN_POSITION__SMI)
96 #define V8_OFF_SCRIPT_NAME \
97  V8_OFF_HEAP(V8DBG_CLASS_SCRIPT__NAME__OBJECT)
98 #define V8_OFF_SCRIPT_LENDS \
99  V8_OFF_HEAP(V8DBG_CLASS_SCRIPT__LINE_ENDS__OBJECT)
100 #define V8_OFF_STR_LENGTH \
101  V8_OFF_HEAP(V8DBG_CLASS_STRING__LENGTH__SMI)
102 #define V8_OFF_STR_CHARS \
103  V8_OFF_HEAP(V8DBG_CLASS_SEQONEBYTESTRING__CHARS__CHAR)
104 #define V8_OFF_CONSSTR_CAR \
105  V8_OFF_HEAP(V8DBG_CLASS_CONSSTRING__FIRST__STRING)
106 #define V8_OFF_CONSSTR_CDR \
107  V8_OFF_HEAP(V8DBG_CLASS_CONSSTRING__SECOND__STRING)
108 #define V8_OFF_EXTSTR_RSRC \
109  V8_OFF_HEAP(V8DBG_CLASS_EXTERNALSTRING__RESOURCE__OBJECT)
110 #define V8_OFF_FA_SIZE \
111  V8_OFF_HEAP(V8DBG_CLASS_FIXEDARRAYBASE__LENGTH__SMI)
112 #define V8_OFF_FA_DATA \
113  V8_OFF_HEAP(V8DBG_CLASS_FIXEDARRAY__DATA__UINTPTR_T)
114 #define V8_OFF_HEAPOBJ_MAP \
115  V8_OFF_HEAP(V8DBG_CLASS_HEAPOBJECT__MAP__MAP)
116 #define V8_OFF_MAP_ATTRS \
117  V8_OFF_HEAP(V8DBG_CLASS_MAP__INSTANCE_ATTRIBUTES__INT)
118 #define V8_OFF_TWOBYTESTR_CHARS \
119  V8_OFF_HEAP(V8DBG_CLASS_SEQTWOBYTESTRING__CHARS__CHAR)
120 
121 #endif /* SRC_V8ABBR_H_ */