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Commit 92a16bbe by Alex Samuel Committed by Alex Samuel
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cp-demangle.c (demangle_nv_offset): New function. 

	* cp-demangle.c (demangle_nv_offset): New function.
	(demangle_v_offset): Likewise.
	(demangle_call_offset): Likewise.
	(demangle_special_name): Update thunk demangling to comply with
	ABI changes.

From-SVN: r36150
parent a1281f45
Showing with 169 additions and 51 deletions
libiberty/ChangeLog
2000-09-04 Alex Samuel <samuel@codesourcery.com>
* cp-demangle.c (demangle_nv_offset): New function.
(demangle_v_offset): Likewise.
(demangle_call_offset): Likewise.
(demangle_special_name): Update thunk demangling to comply with
ABI changes.
2000-09-03 Alex Samuel <samuel@codesourcery.com>
* cp-demangle.c (ANONYMOUS_NAMESPACE_PREFIX): New macro.
......
libiberty/cp-demangle.c
......@@ -816,6 +816,12 @@ static status_t demangle_identifier
PARAMS ((demangling_t, int, dyn_string_t));
static status_t demangle_operator_name
PARAMS ((demangling_t, int, int *));
static status_t demangle_nv_offset
PARAMS ((demangling_t));
static status_t demangle_v_offset
PARAMS ((demangling_t));
static status_t demangle_call_offset
PARAMS ((demangling_t));
static status_t demangle_special_name
PARAMS ((demangling_t));
static status_t demangle_ctor_dtor_name
......@@ -1569,19 +1575,154 @@ demangle_operator_name (dm, short_name, num_args)
}
}
/* Demangles and omits an <nv-offset>.
<nv-offset> ::= <offset number> # non-virtual base override */
static status_t
demangle_nv_offset (dm)
demangling_t dm;
{
dyn_string_t number;
status_t status = STATUS_OK;
DEMANGLE_TRACE ("h-offset", dm);
/* Demangle the offset. */
number = dyn_string_new (4);
if (number == NULL)
return STATUS_ALLOCATION_FAILED;
demangle_number_literally (dm, number, 10, 1);
/* Don't display the offset unless in verbose mode. */
if (flag_verbose)
{
status = result_append (dm, " [nv:");
if (STATUS_NO_ERROR (status))
status = result_append_string (dm, number);
if (STATUS_NO_ERROR (status))
status = result_append_char (dm, ']');
}
/* Clean up. */
dyn_string_delete (number);
RETURN_IF_ERROR (status);
return STATUS_OK;
}
/* Demangles and emits a <v-offset>.
<v-offset> ::= <offset number> _ <virtual offset number>
# virtual base override, with vcall offset */
static status_t
demangle_v_offset (dm)
demangling_t dm;
{
dyn_string_t number;
status_t status = STATUS_OK;
DEMANGLE_TRACE ("v-offset", dm);
/* Demangle the offset. */
number = dyn_string_new (4);
if (number == NULL)
return STATUS_ALLOCATION_FAILED;
demangle_number_literally (dm, number, 10, 1);
/* Don't display the offset unless in verbose mode. */
if (flag_verbose)
{
status = result_append (dm, " [v:");
if (STATUS_NO_ERROR (status))
status = result_append_string (dm, number);
if (STATUS_NO_ERROR (status))
result_append_char (dm, ',');
}
dyn_string_delete (number);
RETURN_IF_ERROR (status);
/* Demangle the separator. */
RETURN_IF_ERROR (demangle_char (dm, '_'));
/* Demangle the vcall offset. */
number = dyn_string_new (4);
if (number == NULL)
return STATUS_ALLOCATION_FAILED;
demangle_number_literally (dm, number, 10, 1);
/* Don't display the vcall offset unless in verbose mode. */
if (flag_verbose)
{
status = result_append_string (dm, number);
if (STATUS_NO_ERROR (status))
status = result_append_char (dm, ']');
}
dyn_string_delete (number);
RETURN_IF_ERROR (status);
return STATUS_OK;
}
/* Demangles and emits a <call-offset>.
<call-offset> ::= h <nv-offset> _
::= v <v-offset> _ */
static status_t
demangle_call_offset (dm)
demangling_t dm;
{
DEMANGLE_TRACE ("call-offset", dm);
switch (peek_char (dm))
{
case 'h':
advance_char (dm);
/* Demangle the offset. */
RETURN_IF_ERROR (demangle_nv_offset (dm));
/* Demangle the separator. */
RETURN_IF_ERROR (demangle_char (dm, '_'));
break;
case 'v':
advance_char (dm);
/* Demangle the offset. */
RETURN_IF_ERROR (demangle_v_offset (dm));
/* Demangle the separator. */
RETURN_IF_ERROR (demangle_char (dm, '_'));
break;
default:
return "Unrecognized <call-offset>.";
}
return STATUS_OK;
}
/* Demangles and emits a <special-name>.
<special-name> ::= GV <object name> # Guard variable
::= Th[n] <offset number> _ <base name> <base encoding>
# non-virtual base override thunk
::= Tv[n] <offset number> _ <vcall offset number>
_ <base encoding>
# virtual base override thunk
::= TV <type> # virtual table
::= TT <type> # VTT
::= TI <type> # typeinfo structure
::= TS <type> # typeinfo name
Other relevant productions include thunks:
<special-name> ::= T <call-offset> <base encoding>
# base is the nominal target function of thunk
<special-name> ::= Tc <call-offset> <call-offset> <base encoding>
# base is the nominal target function of thunk
# first call-offset is 'this' adjustment
# second call-offset is result adjustment
where
<call-offset> ::= h <nv-offset> _
::= v <v-offset> _
Also demangles the special g++ manglings,
<special-name> ::= CT <type> <offset number> _ <base type>
......@@ -1662,20 +1803,7 @@ demangle_special_name (dm)
/* Non-virtual thunk. */
advance_char (dm);
RETURN_IF_ERROR (result_append (dm, "non-virtual thunk"));
/* Demangle and emit the offset. */
number = dyn_string_new (4);
if (number == NULL)
return STATUS_ALLOCATION_FAILED;
demangle_number_literally (dm, number, 10, 1);
/* Don't display the offset unless in verbose mode. */
if (flag_verbose)
{
status = result_append_char (dm, ' ');
if (STATUS_NO_ERROR (status))
status = result_append_string (dm, number);
}
dyn_string_delete (number);
RETURN_IF_ERROR (status);
RETURN_IF_ERROR (demangle_nv_offset (dm));
/* Demangle the separator. */
RETURN_IF_ERROR (demangle_char (dm, '_'));
/* Demangle and emit the target name and function type. */
......@@ -1686,41 +1814,23 @@ demangle_special_name (dm)
case 'v':
/* Virtual thunk. */
advance_char (dm);
RETURN_IF_ERROR (result_append (dm, "virtual thunk "));
/* Demangle and emit the offset. */
number = dyn_string_new (4);
if (number == NULL)
return STATUS_ALLOCATION_FAILED;
demangle_number_literally (dm, number, 10, 1);
/* Don't display the offset unless in verbose mode. */
if (flag_verbose)
{
status = result_append_string (dm, number);
if (STATUS_NO_ERROR (status))
result_append_char (dm, ' ');
}
dyn_string_delete (number);
RETURN_IF_ERROR (status);
/* Demangle the separator. */
RETURN_IF_ERROR (demangle_char (dm, '_'));
/* Demangle and emit the vcall offset. */
number = dyn_string_new (4);
if (number == NULL)
return STATUS_ALLOCATION_FAILED;
demangle_number_literally (dm, number, 10, 1);
/* Don't display the vcall offset unless in verbose mode. */
if (flag_verbose)
{
status = result_append_string (dm, number);
if (STATUS_NO_ERROR (status))
status = result_append_char (dm, ' ');
}
dyn_string_delete (number);
RETURN_IF_ERROR (status);
RETURN_IF_ERROR (result_append (dm, "virtual thunk"));
RETURN_IF_ERROR (demangle_v_offset (dm));
/* Demangle the separator. */
RETURN_IF_ERROR (demangle_char (dm, '_'));
/* Demangle and emit the target function. */
RETURN_IF_ERROR (result_append (dm, "to "));
RETURN_IF_ERROR (result_append (dm, " to "));
RETURN_IF_ERROR (demangle_encoding (dm));
break;
case 'c':
/* Covariant return thunk. */
advance_char (dm);
RETURN_IF_ERROR (result_append (dm, "covariant return thunk"));
RETURN_IF_ERROR (demangle_call_offset (dm));
RETURN_IF_ERROR (demangle_call_offset (dm));
/* Demangle and emit the target function. */
RETURN_IF_ERROR (result_append (dm, " to "));
RETURN_IF_ERROR (demangle_encoding (dm));
break;
......
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