MSVC 6.0 C++ name mangling conventions (decorated names)

MSVC 6.0 C++ name mangling conventions

Microsoft likes to call these decorated names, to each their own.

Here is what I've gleaned so far, use at your own risk.

Note: In particular, this *has* changed before (going to MSVC 4), and could quite possibly change in the future.


stdcall:

?funcName @@YG retType params-list Z


cdecl:

?funcName @@YA retType params-list Z


thiscall:

?methodName @ className @@AAE retType param-list Z


static method call:

?methodName @ className @@CA retType param-list Z


If there are parameters, param-list is a list of them, followed by a @
Otherwise, param-list is X (void), with no @ aftwards

Basic types:

D is char                int8
E is unsigned char      uint8
F is short               int16
G is unsigned short     uint16
H is int                 int32
I is unsigned int       uint32
J is long                int32
K is unsigned long      uint32
M is float              float32
N is double             float64

X is void

_J is int 64             int64
_K is unsigned int 64   uint64
_N is bool


Pointers:

PA prefixes a type to indicate a pointer
PB prefixes a type to indicate a const pointer

Note: volatile is not represented in the mangled/decorated name


Structures:

UstructName@@ is structName
a pointer to a struct occurs as PA or PB followed by a U...

Udigit@ is a constructing reference to the previous digitth U definition (1 based).
In other words, it creates a new definition that can be referenced later on as well.

digit is a reference to the previous digitth U definition (0 based!!!)

For structures, a PAUname@@ will be referenced as 0 in other parameters of the form
name *, but the first parameter of the form name will appear as U1@ and subequently as 1.

The converse is having a Uname@@ first, and then parameters of the form name * will
appear first as PAU1@ and subsequently as 1, and parameters of the form name as 0.

Note: 0 and 1 in these two examples are the positions of the first Ux@@ and
first Uy@ declarations, they could be 2 and 4 if there were two decls. before
the first, and one decl in between.