666 lines
23 KiB
C
666 lines
23 KiB
C
/* Generate information regarding function declarations and definitions based
|
||
on information stored in GCC's tree structure. This code implements the
|
||
-aux-info option.
|
||
Copyright (C) 1989, 91, 94, 95, 97-98, 1999 Free Software Foundation, Inc.
|
||
Contributed by Ron Guilmette (rfg@segfault.us.com).
|
||
|
||
This file is part of GNU CC.
|
||
|
||
GNU CC is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2, or (at your option)
|
||
any later version.
|
||
|
||
GNU CC is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with GNU CC; see the file COPYING. If not, write to
|
||
the Free Software Foundation, 59 Temple Place - Suite 330,
|
||
Boston, MA 02111-1307, USA. */
|
||
|
||
#include "config.h"
|
||
#include "system.h"
|
||
#include "toplev.h"
|
||
#include "flags.h"
|
||
#include "tree.h"
|
||
#include "c-tree.h"
|
||
|
||
enum formals_style_enum {
|
||
ansi,
|
||
k_and_r_names,
|
||
k_and_r_decls
|
||
};
|
||
typedef enum formals_style_enum formals_style;
|
||
|
||
|
||
static const char *data_type;
|
||
|
||
static char *affix_data_type PROTO((const char *));
|
||
static const char *gen_formal_list_for_type PROTO((tree, formals_style));
|
||
static int deserves_ellipsis PROTO((tree));
|
||
static const char *gen_formal_list_for_func_def PROTO((tree, formals_style));
|
||
static const char *gen_type PROTO((const char *, tree, formals_style));
|
||
static const char *gen_decl PROTO((tree, int, formals_style));
|
||
|
||
/* Concatenate a sequence of strings, returning the result.
|
||
|
||
This function is based on the one in libiberty. */
|
||
|
||
/* This definition will conflict with the one from prefix.c in
|
||
libcpp.a when linking cc1 and cc1obj. So only provide it if we are
|
||
not using libcpp.a */
|
||
#ifndef USE_CPPLIB
|
||
char *
|
||
concat VPROTO((const char *first, ...))
|
||
{
|
||
register int length;
|
||
register char *newstr;
|
||
register char *end;
|
||
register const char *arg;
|
||
va_list args;
|
||
#ifndef ANSI_PROTOTYPES
|
||
const char *first;
|
||
#endif
|
||
|
||
/* First compute the size of the result and get sufficient memory. */
|
||
|
||
VA_START (args, first);
|
||
#ifndef ANSI_PROTOTYPES
|
||
first = va_arg (args, const char *);
|
||
#endif
|
||
|
||
arg = first;
|
||
length = 0;
|
||
|
||
while (arg != 0)
|
||
{
|
||
length += strlen (arg);
|
||
arg = va_arg (args, const char *);
|
||
}
|
||
|
||
newstr = (char *) malloc (length + 1);
|
||
va_end (args);
|
||
|
||
/* Now copy the individual pieces to the result string. */
|
||
|
||
VA_START (args, first);
|
||
#ifndef ANSI_PROTOTYPES
|
||
first = va_arg (args, char *);
|
||
#endif
|
||
|
||
end = newstr;
|
||
arg = first;
|
||
while (arg != 0)
|
||
{
|
||
while (*arg)
|
||
*end++ = *arg++;
|
||
arg = va_arg (args, const char *);
|
||
}
|
||
*end = '\000';
|
||
va_end (args);
|
||
|
||
return (newstr);
|
||
}
|
||
#endif /* ! USE_CPPLIB */
|
||
|
||
/* Given a string representing an entire type or an entire declaration
|
||
which only lacks the actual "data-type" specifier (at its left end),
|
||
affix the data-type specifier to the left end of the given type
|
||
specification or object declaration.
|
||
|
||
Because of C language weirdness, the data-type specifier (which normally
|
||
goes in at the very left end) may have to be slipped in just to the
|
||
right of any leading "const" or "volatile" qualifiers (there may be more
|
||
than one). Actually this may not be strictly necessary because it seems
|
||
that GCC (at least) accepts `<data-type> const foo;' and treats it the
|
||
same as `const <data-type> foo;' but people are accustomed to seeing
|
||
`const char *foo;' and *not* `char const *foo;' so we try to create types
|
||
that look as expected. */
|
||
|
||
static char *
|
||
affix_data_type (param)
|
||
const char *param;
|
||
{
|
||
char *type_or_decl = (char *) alloca (strlen (param) + 1);
|
||
char *p = type_or_decl;
|
||
char *qualifiers_then_data_type;
|
||
char saved;
|
||
|
||
strcpy (type_or_decl, param);
|
||
|
||
/* Skip as many leading const's or volatile's as there are. */
|
||
|
||
for (;;)
|
||
{
|
||
if (!strncmp (p, "volatile ", 9))
|
||
{
|
||
p += 9;
|
||
continue;
|
||
}
|
||
if (!strncmp (p, "const ", 6))
|
||
{
|
||
p += 6;
|
||
continue;
|
||
}
|
||
break;
|
||
}
|
||
|
||
/* p now points to the place where we can insert the data type. We have to
|
||
add a blank after the data-type of course. */
|
||
|
||
if (p == type_or_decl)
|
||
return concat (data_type, " ", type_or_decl, NULL_PTR);
|
||
|
||
saved = *p;
|
||
*p = '\0';
|
||
qualifiers_then_data_type = concat (type_or_decl, data_type, NULL_PTR);
|
||
*p = saved;
|
||
return concat (qualifiers_then_data_type, " ", p, NULL_PTR);
|
||
}
|
||
|
||
/* Given a tree node which represents some "function type", generate the
|
||
source code version of a formal parameter list (of some given style) for
|
||
this function type. Return the whole formal parameter list (including
|
||
a pair of surrounding parens) as a string. Note that if the style
|
||
we are currently aiming for is non-ansi, then we just return a pair
|
||
of empty parens here. */
|
||
|
||
static const char *
|
||
gen_formal_list_for_type (fntype, style)
|
||
tree fntype;
|
||
formals_style style;
|
||
{
|
||
const char *formal_list = "";
|
||
tree formal_type;
|
||
|
||
if (style != ansi)
|
||
return "()";
|
||
|
||
formal_type = TYPE_ARG_TYPES (fntype);
|
||
while (formal_type && TREE_VALUE (formal_type) != void_type_node)
|
||
{
|
||
const char *this_type;
|
||
|
||
if (*formal_list)
|
||
formal_list = concat (formal_list, ", ", NULL_PTR);
|
||
|
||
this_type = gen_type ("", TREE_VALUE (formal_type), ansi);
|
||
formal_list
|
||
= ((strlen (this_type))
|
||
? concat (formal_list, affix_data_type (this_type), NULL_PTR)
|
||
: concat (formal_list, data_type, NULL_PTR));
|
||
|
||
formal_type = TREE_CHAIN (formal_type);
|
||
}
|
||
|
||
/* If we got to here, then we are trying to generate an ANSI style formal
|
||
parameters list.
|
||
|
||
New style prototyped ANSI formal parameter lists should in theory always
|
||
contain some stuff between the opening and closing parens, even if it is
|
||
only "void".
|
||
|
||
The brutal truth though is that there is lots of old K&R code out there
|
||
which contains declarations of "pointer-to-function" parameters and
|
||
these almost never have fully specified formal parameter lists associated
|
||
with them. That is, the pointer-to-function parameters are declared
|
||
with just empty parameter lists.
|
||
|
||
In cases such as these, protoize should really insert *something* into
|
||
the vacant parameter lists, but what? It has no basis on which to insert
|
||
anything in particular.
|
||
|
||
Here, we make life easy for protoize by trying to distinguish between
|
||
K&R empty parameter lists and new-style prototyped parameter lists
|
||
that actually contain "void". In the latter case we (obviously) want
|
||
to output the "void" verbatim, and that what we do. In the former case,
|
||
we do our best to give protoize something nice to insert.
|
||
|
||
This "something nice" should be something that is still valid (when
|
||
re-compiled) but something that can clearly indicate to the user that
|
||
more typing information (for the parameter list) should be added (by
|
||
hand) at some convenient moment.
|
||
|
||
The string chosen here is a comment with question marks in it. */
|
||
|
||
if (!*formal_list)
|
||
{
|
||
if (TYPE_ARG_TYPES (fntype))
|
||
/* assert (TREE_VALUE (TYPE_ARG_TYPES (fntype)) == void_type_node); */
|
||
formal_list = "void";
|
||
else
|
||
formal_list = "/* ??? */";
|
||
}
|
||
else
|
||
{
|
||
/* If there were at least some parameters, and if the formals-types-list
|
||
petered out to a NULL (i.e. without being terminated by a
|
||
void_type_node) then we need to tack on an ellipsis. */
|
||
if (!formal_type)
|
||
formal_list = concat (formal_list, ", ...", NULL_PTR);
|
||
}
|
||
|
||
return concat (" (", formal_list, ")", NULL_PTR);
|
||
}
|
||
|
||
/* For the generation of an ANSI prototype for a function definition, we have
|
||
to look at the formal parameter list of the function's own "type" to
|
||
determine if the function's formal parameter list should end with an
|
||
ellipsis. Given a tree node, the following function will return non-zero
|
||
if the "function type" parameter list should end with an ellipsis. */
|
||
|
||
static int
|
||
deserves_ellipsis (fntype)
|
||
tree fntype;
|
||
{
|
||
tree formal_type;
|
||
|
||
formal_type = TYPE_ARG_TYPES (fntype);
|
||
while (formal_type && TREE_VALUE (formal_type) != void_type_node)
|
||
formal_type = TREE_CHAIN (formal_type);
|
||
|
||
/* If there were at least some parameters, and if the formals-types-list
|
||
petered out to a NULL (i.e. without being terminated by a void_type_node)
|
||
then we need to tack on an ellipsis. */
|
||
|
||
return (!formal_type && TYPE_ARG_TYPES (fntype));
|
||
}
|
||
|
||
/* Generate a parameter list for a function definition (in some given style).
|
||
|
||
Note that this routine has to be separate (and different) from the code that
|
||
generates the prototype parameter lists for function declarations, because
|
||
in the case of a function declaration, all we have to go on is a tree node
|
||
representing the function's own "function type". This can tell us the types
|
||
of all of the formal parameters for the function, but it cannot tell us the
|
||
actual *names* of each of the formal parameters. We need to output those
|
||
parameter names for each function definition.
|
||
|
||
This routine gets a pointer to a tree node which represents the actual
|
||
declaration of the given function, and this DECL node has a list of formal
|
||
parameter (variable) declarations attached to it. These formal parameter
|
||
(variable) declaration nodes give us the actual names of the formal
|
||
parameters for the given function definition.
|
||
|
||
This routine returns a string which is the source form for the entire
|
||
function formal parameter list. */
|
||
|
||
static const char *
|
||
gen_formal_list_for_func_def (fndecl, style)
|
||
tree fndecl;
|
||
formals_style style;
|
||
{
|
||
const char *formal_list = "";
|
||
tree formal_decl;
|
||
|
||
formal_decl = DECL_ARGUMENTS (fndecl);
|
||
while (formal_decl)
|
||
{
|
||
const char *this_formal;
|
||
|
||
if (*formal_list && ((style == ansi) || (style == k_and_r_names)))
|
||
formal_list = concat (formal_list, ", ", NULL_PTR);
|
||
this_formal = gen_decl (formal_decl, 0, style);
|
||
if (style == k_and_r_decls)
|
||
formal_list = concat (formal_list, this_formal, "; ", NULL_PTR);
|
||
else
|
||
formal_list = concat (formal_list, this_formal, NULL_PTR);
|
||
formal_decl = TREE_CHAIN (formal_decl);
|
||
}
|
||
if (style == ansi)
|
||
{
|
||
if (!DECL_ARGUMENTS (fndecl))
|
||
formal_list = concat (formal_list, "void", NULL_PTR);
|
||
if (deserves_ellipsis (TREE_TYPE (fndecl)))
|
||
formal_list = concat (formal_list, ", ...", NULL_PTR);
|
||
}
|
||
if ((style == ansi) || (style == k_and_r_names))
|
||
formal_list = concat (" (", formal_list, ")", NULL_PTR);
|
||
return formal_list;
|
||
}
|
||
|
||
/* Generate a string which is the source code form for a given type (t). This
|
||
routine is ugly and complex because the C syntax for declarations is ugly
|
||
and complex. This routine is straightforward so long as *no* pointer types,
|
||
array types, or function types are involved.
|
||
|
||
In the simple cases, this routine will return the (string) value which was
|
||
passed in as the "ret_val" argument. Usually, this starts out either as an
|
||
empty string, or as the name of the declared item (i.e. the formal function
|
||
parameter variable).
|
||
|
||
This routine will also return with the global variable "data_type" set to
|
||
some string value which is the "basic" data-type of the given complete type.
|
||
This "data_type" string can be concatenated onto the front of the returned
|
||
string after this routine returns to its caller.
|
||
|
||
In complicated cases involving pointer types, array types, or function
|
||
types, the C declaration syntax requires an "inside out" approach, i.e. if
|
||
you have a type which is a "pointer-to-function" type, you need to handle
|
||
the "pointer" part first, but it also has to be "innermost" (relative to
|
||
the declaration stuff for the "function" type). Thus, is this case, you
|
||
must prepend a "(*" and append a ")" to the name of the item (i.e. formal
|
||
variable). Then you must append and prepend the other info for the
|
||
"function type" part of the overall type.
|
||
|
||
To handle the "innermost precedence" rules of complicated C declarators, we
|
||
do the following (in this routine). The input parameter called "ret_val"
|
||
is treated as a "seed". Each time gen_type is called (perhaps recursively)
|
||
some additional strings may be appended or prepended (or both) to the "seed"
|
||
string. If yet another (lower) level of the GCC tree exists for the given
|
||
type (as in the case of a pointer type, an array type, or a function type)
|
||
then the (wrapped) seed is passed to a (recursive) invocation of gen_type()
|
||
this recursive invocation may again "wrap" the (new) seed with yet more
|
||
declarator stuff, by appending, prepending (or both). By the time the
|
||
recursion bottoms out, the "seed value" at that point will have a value
|
||
which is (almost) the complete source version of the declarator (except
|
||
for the data_type info). Thus, this deepest "seed" value is simply passed
|
||
back up through all of the recursive calls until it is given (as the return
|
||
value) to the initial caller of the gen_type() routine. All that remains
|
||
to do at this point is for the initial caller to prepend the "data_type"
|
||
string onto the returned "seed". */
|
||
|
||
static const char *
|
||
gen_type (ret_val, t, style)
|
||
const char *ret_val;
|
||
tree t;
|
||
formals_style style;
|
||
{
|
||
tree chain_p;
|
||
|
||
/* If there is a typedef name for this type, use it. */
|
||
if (TYPE_NAME (t) && TREE_CODE (TYPE_NAME (t)) == TYPE_DECL)
|
||
data_type = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (t)));
|
||
else
|
||
{
|
||
switch (TREE_CODE (t))
|
||
{
|
||
case POINTER_TYPE:
|
||
if (TYPE_READONLY (t))
|
||
ret_val = concat ("const ", ret_val, NULL_PTR);
|
||
if (TYPE_VOLATILE (t))
|
||
ret_val = concat ("volatile ", ret_val, NULL_PTR);
|
||
|
||
ret_val = concat ("*", ret_val, NULL_PTR);
|
||
|
||
if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE || TREE_CODE (TREE_TYPE (t)) == FUNCTION_TYPE)
|
||
ret_val = concat ("(", ret_val, ")", NULL_PTR);
|
||
|
||
ret_val = gen_type (ret_val, TREE_TYPE (t), style);
|
||
|
||
return ret_val;
|
||
|
||
case ARRAY_TYPE:
|
||
if (TYPE_SIZE (t) == 0 || TREE_CODE (TYPE_SIZE (t)) != INTEGER_CST)
|
||
ret_val = gen_type (concat (ret_val, "[]", NULL_PTR),
|
||
TREE_TYPE (t), style);
|
||
else if (int_size_in_bytes (t) == 0)
|
||
ret_val = gen_type (concat (ret_val, "[0]", NULL_PTR),
|
||
TREE_TYPE (t), style);
|
||
else
|
||
{
|
||
int size = (int_size_in_bytes (t) / int_size_in_bytes (TREE_TYPE (t)));
|
||
char buff[10];
|
||
sprintf (buff, "[%d]", size);
|
||
ret_val = gen_type (concat (ret_val, buff, NULL_PTR),
|
||
TREE_TYPE (t), style);
|
||
}
|
||
break;
|
||
|
||
case FUNCTION_TYPE:
|
||
ret_val = gen_type (concat (ret_val,
|
||
gen_formal_list_for_type (t, style),
|
||
NULL_PTR),
|
||
TREE_TYPE (t), style);
|
||
break;
|
||
|
||
case IDENTIFIER_NODE:
|
||
data_type = IDENTIFIER_POINTER (t);
|
||
break;
|
||
|
||
/* The following three cases are complicated by the fact that a
|
||
user may do something really stupid, like creating a brand new
|
||
"anonymous" type specification in a formal argument list (or as
|
||
part of a function return type specification). For example:
|
||
|
||
int f (enum { red, green, blue } color);
|
||
|
||
In such cases, we have no name that we can put into the prototype
|
||
to represent the (anonymous) type. Thus, we have to generate the
|
||
whole darn type specification. Yuck! */
|
||
|
||
case RECORD_TYPE:
|
||
if (TYPE_NAME (t))
|
||
data_type = IDENTIFIER_POINTER (TYPE_NAME (t));
|
||
else
|
||
{
|
||
data_type = "";
|
||
chain_p = TYPE_FIELDS (t);
|
||
while (chain_p)
|
||
{
|
||
data_type = concat (data_type, gen_decl (chain_p, 0, ansi),
|
||
NULL_PTR);
|
||
chain_p = TREE_CHAIN (chain_p);
|
||
data_type = concat (data_type, "; ", NULL_PTR);
|
||
}
|
||
data_type = concat ("{ ", data_type, "}", NULL_PTR);
|
||
}
|
||
data_type = concat ("struct ", data_type, NULL_PTR);
|
||
break;
|
||
|
||
case UNION_TYPE:
|
||
if (TYPE_NAME (t))
|
||
data_type = IDENTIFIER_POINTER (TYPE_NAME (t));
|
||
else
|
||
{
|
||
data_type = "";
|
||
chain_p = TYPE_FIELDS (t);
|
||
while (chain_p)
|
||
{
|
||
data_type = concat (data_type, gen_decl (chain_p, 0, ansi),
|
||
NULL_PTR);
|
||
chain_p = TREE_CHAIN (chain_p);
|
||
data_type = concat (data_type, "; ", NULL_PTR);
|
||
}
|
||
data_type = concat ("{ ", data_type, "}", NULL_PTR);
|
||
}
|
||
data_type = concat ("union ", data_type, NULL_PTR);
|
||
break;
|
||
|
||
case ENUMERAL_TYPE:
|
||
if (TYPE_NAME (t))
|
||
data_type = IDENTIFIER_POINTER (TYPE_NAME (t));
|
||
else
|
||
{
|
||
data_type = "";
|
||
chain_p = TYPE_VALUES (t);
|
||
while (chain_p)
|
||
{
|
||
data_type = concat (data_type,
|
||
IDENTIFIER_POINTER (TREE_PURPOSE (chain_p)), NULL_PTR);
|
||
chain_p = TREE_CHAIN (chain_p);
|
||
if (chain_p)
|
||
data_type = concat (data_type, ", ", NULL_PTR);
|
||
}
|
||
data_type = concat ("{ ", data_type, " }", NULL_PTR);
|
||
}
|
||
data_type = concat ("enum ", data_type, NULL_PTR);
|
||
break;
|
||
|
||
case TYPE_DECL:
|
||
data_type = IDENTIFIER_POINTER (DECL_NAME (t));
|
||
break;
|
||
|
||
case INTEGER_TYPE:
|
||
data_type = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (t)));
|
||
/* Normally, `unsigned' is part of the deal. Not so if it comes
|
||
with a type qualifier. */
|
||
if (TREE_UNSIGNED (t) && TYPE_QUALS (t))
|
||
data_type = concat ("unsigned ", data_type, NULL_PTR);
|
||
break;
|
||
|
||
case REAL_TYPE:
|
||
data_type = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (t)));
|
||
break;
|
||
|
||
case VOID_TYPE:
|
||
data_type = "void";
|
||
break;
|
||
|
||
case ERROR_MARK:
|
||
data_type = "[ERROR]";
|
||
break;
|
||
|
||
default:
|
||
abort ();
|
||
}
|
||
}
|
||
if (TYPE_READONLY (t))
|
||
ret_val = concat ("const ", ret_val, NULL_PTR);
|
||
if (TYPE_VOLATILE (t))
|
||
ret_val = concat ("volatile ", ret_val, NULL_PTR);
|
||
if (TYPE_RESTRICT (t))
|
||
ret_val = concat ("restrict ", ret_val, NULL_PTR);
|
||
return ret_val;
|
||
}
|
||
|
||
/* Generate a string (source) representation of an entire entity declaration
|
||
(using some particular style for function types).
|
||
|
||
The given entity may be either a variable or a function.
|
||
|
||
If the "is_func_definition" parameter is non-zero, assume that the thing
|
||
we are generating a declaration for is a FUNCTION_DECL node which is
|
||
associated with a function definition. In this case, we can assume that
|
||
an attached list of DECL nodes for function formal arguments is present. */
|
||
|
||
static const char *
|
||
gen_decl (decl, is_func_definition, style)
|
||
tree decl;
|
||
int is_func_definition;
|
||
formals_style style;
|
||
{
|
||
const char *ret_val;
|
||
|
||
if (DECL_NAME (decl))
|
||
ret_val = IDENTIFIER_POINTER (DECL_NAME (decl));
|
||
else
|
||
ret_val = "";
|
||
|
||
/* If we are just generating a list of names of formal parameters, we can
|
||
simply return the formal parameter name (with no typing information
|
||
attached to it) now. */
|
||
|
||
if (style == k_and_r_names)
|
||
return ret_val;
|
||
|
||
/* Note that for the declaration of some entity (either a function or a
|
||
data object, like for instance a parameter) if the entity itself was
|
||
declared as either const or volatile, then const and volatile properties
|
||
are associated with just the declaration of the entity, and *not* with
|
||
the `type' of the entity. Thus, for such declared entities, we have to
|
||
generate the qualifiers here. */
|
||
|
||
if (TREE_THIS_VOLATILE (decl))
|
||
ret_val = concat ("volatile ", ret_val, NULL_PTR);
|
||
if (TREE_READONLY (decl))
|
||
ret_val = concat ("const ", ret_val, NULL_PTR);
|
||
|
||
data_type = "";
|
||
|
||
/* For FUNCTION_DECL nodes, there are two possible cases here. First, if
|
||
this FUNCTION_DECL node was generated from a function "definition", then
|
||
we will have a list of DECL_NODE's, one for each of the function's formal
|
||
parameters. In this case, we can print out not only the types of each
|
||
formal, but also each formal's name. In the second case, this
|
||
FUNCTION_DECL node came from an actual function declaration (and *not*
|
||
a definition). In this case, we do nothing here because the formal
|
||
argument type-list will be output later, when the "type" of the function
|
||
is added to the string we are building. Note that the ANSI-style formal
|
||
parameter list is considered to be a (suffix) part of the "type" of the
|
||
function. */
|
||
|
||
if (TREE_CODE (decl) == FUNCTION_DECL && is_func_definition)
|
||
{
|
||
ret_val = concat (ret_val, gen_formal_list_for_func_def (decl, ansi),
|
||
NULL_PTR);
|
||
|
||
/* Since we have already added in the formals list stuff, here we don't
|
||
add the whole "type" of the function we are considering (which
|
||
would include its parameter-list info), rather, we only add in
|
||
the "type" of the "type" of the function, which is really just
|
||
the return-type of the function (and does not include the parameter
|
||
list info). */
|
||
|
||
ret_val = gen_type (ret_val, TREE_TYPE (TREE_TYPE (decl)), style);
|
||
}
|
||
else
|
||
ret_val = gen_type (ret_val, TREE_TYPE (decl), style);
|
||
|
||
ret_val = affix_data_type (ret_val);
|
||
|
||
if (TREE_CODE (decl) != FUNCTION_DECL && DECL_REGISTER (decl))
|
||
ret_val = concat ("register ", ret_val, NULL_PTR);
|
||
if (TREE_PUBLIC (decl))
|
||
ret_val = concat ("extern ", ret_val, NULL_PTR);
|
||
if (TREE_CODE (decl) == FUNCTION_DECL && !TREE_PUBLIC (decl))
|
||
ret_val = concat ("static ", ret_val, NULL_PTR);
|
||
|
||
return ret_val;
|
||
}
|
||
|
||
extern FILE *aux_info_file;
|
||
|
||
/* Generate and write a new line of info to the aux-info (.X) file. This
|
||
routine is called once for each function declaration, and once for each
|
||
function definition (even the implicit ones). */
|
||
|
||
void
|
||
gen_aux_info_record (fndecl, is_definition, is_implicit, is_prototyped)
|
||
tree fndecl;
|
||
int is_definition;
|
||
int is_implicit;
|
||
int is_prototyped;
|
||
{
|
||
if (flag_gen_aux_info)
|
||
{
|
||
static int compiled_from_record = 0;
|
||
|
||
/* Each output .X file must have a header line. Write one now if we
|
||
have not yet done so. */
|
||
|
||
if (! compiled_from_record++)
|
||
{
|
||
/* The first line tells which directory file names are relative to.
|
||
Currently, -aux-info works only for files in the working
|
||
directory, so just use a `.' as a placeholder for now. */
|
||
fprintf (aux_info_file, "/* compiled from: . */\n");
|
||
}
|
||
|
||
/* Write the actual line of auxiliary info. */
|
||
|
||
fprintf (aux_info_file, "/* %s:%d:%c%c */ %s;",
|
||
DECL_SOURCE_FILE (fndecl),
|
||
DECL_SOURCE_LINE (fndecl),
|
||
(is_implicit) ? 'I' : (is_prototyped) ? 'N' : 'O',
|
||
(is_definition) ? 'F' : 'C',
|
||
gen_decl (fndecl, is_definition, ansi));
|
||
|
||
/* If this is an explicit function declaration, we need to also write
|
||
out an old-style (i.e. K&R) function header, just in case the user
|
||
wants to run unprotoize. */
|
||
|
||
if (is_definition)
|
||
{
|
||
fprintf (aux_info_file, " /*%s %s*/",
|
||
gen_formal_list_for_func_def (fndecl, k_and_r_names),
|
||
gen_formal_list_for_func_def (fndecl, k_and_r_decls));
|
||
}
|
||
|
||
fprintf (aux_info_file, "\n");
|
||
}
|
||
}
|