mirror of
https://sourceware.org/git/binutils-gdb.git
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7022349d5c
The fact that GDB defaults to assuming that functions return int, when
it has no debug info for the function has been a recurring source of
user confusion. Recently this came up on the errno pretty printer
discussions. Shortly after, it came up again on IRC, with someone
wondering why does getenv() in GDB return a negative int:
(gdb) p getenv("PATH")
$1 = -6185
This question (with s/getenv/random-other-C-runtime-function) is a FAQ
on IRC.
The reason for the above is:
(gdb) p getenv
$2 = {<text variable, no debug info>} 0x7ffff7751d80 <getenv>
(gdb) ptype getenv
type = int ()
... which means that GDB truncated the 64-bit pointer that is actually
returned from getent to 32-bit, and then sign-extended it:
(gdb) p /x -6185
$6 = 0xffffe7d7
The workaround is to cast the function to the right type, like:
(gdb) p ((char *(*) (const char *)) getenv) ("PATH")
$3 = 0x7fffffffe7d7 "/usr/local/bin:/"...
IMO, we should do better than this.
I see the "assume-int" issue the same way I see printing bogus values
for optimized-out variables instead of "<optimized out>" -- I'd much
rather that the debugger tells me "I don't know" and tells me how to
fix it than showing me bogus misleading results, making me go around
tilting at windmills.
If GDB prints a signed integer when you're expecting a pointer or
aggregate, you at least have some sense that something is off, but
consider the case of the function actually returning a 64-bit integer.
For example, compile this without debug info:
unsigned long long
function ()
{
return 0x7fffffffffffffff;
}
Currently, with pristine GDB, you get:
(gdb) p function ()
$1 = -1 # incorrect
(gdb) p /x function ()
$2 = 0xffffffff # incorrect
maybe after spending a few hours debugging you suspect something is
wrong with that -1, and do:
(gdb) ptype function
type = int ()
and maybe, just maybe, you realize that the function actually returns
unsigned long long. And you try to fix it with:
(gdb) p /x (unsigned long long) function ()
$3 = 0xffffffffffffffff # incorrect
... which still produces the wrong result, because GDB simply applied
int to unsigned long long conversion. Meaning, it sign-extended the
integer that it extracted from the return of the function, to 64-bits.
and then maybe, after asking around on IRC, you realize you have to
cast the function to a pointer of the right type, and call that. It
won't be easy, but after a few missteps, you'll get to it:
..... (gdb) p /x ((unsigned long long(*) ()) function) ()
$666 = 0x7fffffffffffffff # finally! :-)
So to improve on the user experience, this patch does the following
(interrelated) things:
- makes no-debug-info functions no longer default to "int" as return
type. Instead, they're left with NULL/"<unknown return type>"
return type.
(gdb) ptype getenv
type = <unknown return type> ()
- makes calling a function with unknown return type an error.
(gdb) p getenv ("PATH")
'getenv' has unknown return type; cast the call to its declared return type
- and then to make it easier to call the function, makes it possible
to _only_ cast the return of the function to the right type,
instead of having to cast the function to a function pointer:
(gdb) p (char *) getenv ("PATH") # now Just Works
$3 = 0x7fffffffe7d7 "/usr/local/bin:/"...
(gdb) p ((char *(*) (const char *)) getenv) ("PATH") # continues working
$4 = 0x7fffffffe7d7 "/usr/local/bin:/"...
I.e., it makes GDB default the function's return type to the type
of the cast, and the function's parameters to the type of the
arguments passed down.
After this patch, here's what you'll get for the "unsigned long long"
example above:
(gdb) p function ()
'function' has unknown return type; cast the call to its declared return type
(gdb) p /x (unsigned long long) function ()
$4 = 0x7fffffffffffffff # correct!
Note that while with "print" GDB shows the name of the function that
has the problem:
(gdb) p getenv ("PATH")
'getenv' has unknown return type; cast the call to its declared return type
which can by handy in more complicated expressions, "ptype" does not:
(gdb) ptype getenv ("PATH")
function has unknown return type; cast the call to its declared return type
This will be fixed in the next patch.
gdb/ChangeLog:
2017-09-04 Pedro Alves <palves@redhat.com>
* ada-lang.c (ada_evaluate_subexp) <TYPE_CODE_FUNC>: Don't handle
TYPE_GNU_IFUNC specially here. Throw error if return type is
unknown.
* ada-typeprint.c (print_func_type): Handle functions with unknown
return type.
* c-typeprint.c (c_type_print_base): Handle functions and methods
with unknown return type.
* compile/compile-c-symbols.c (convert_symbol_bmsym)
<mst_text_gnu_ifunc>: Use nodebug_text_gnu_ifunc_symbol.
* compile/compile-c-types.c: Include "objfiles.h".
(convert_func): For functions with unknown return type, warn and
default to int.
* compile/compile-object-run.c (compile_object_run): Adjust call
to call_function_by_hand_dummy.
* elfread.c (elf_gnu_ifunc_resolve_addr): Adjust call to
call_function_by_hand.
* eval.c (evaluate_subexp_standard): Adjust calls to
call_function_by_hand. Handle functions and methods with unknown
return type. Pass expect_type to call_function_by_hand.
* f-typeprint.c (f_type_print_base): Handle functions with unknown
return type.
* gcore.c (call_target_sbrk): Adjust call to
call_function_by_hand.
* gdbtypes.c (objfile_type): Leave nodebug text symbol with NULL
return type instead of int. Make nodebug_text_gnu_ifunc_symbol be
an integer address type instead of nodebug.
* guile/scm-value.c (gdbscm_value_call): Adjust call to
call_function_by_hand.
* infcall.c (error_call_unknown_return_type): New function.
(call_function_by_hand): New "default_return_type" parameter.
Pass it down.
(call_function_by_hand_dummy): New "default_return_type"
parameter. Use it instead of defaulting to int. If there's no
default and the return type is unknown, throw an error. If
there's a default return type, and the called function has no
debug info, then assume the function is prototyped.
* infcall.h (call_function_by_hand, call_function_by_hand_dummy):
New "default_return_type" parameter.
(error_call_unknown_return_type): New declaration.
* linux-fork.c (call_lseek): Cast return type of lseek.
(inferior_call_waitpid, checkpoint_command): Adjust calls to
call_function_by_hand.
* linux-tdep.c (linux_infcall_mmap, linux_infcall_munmap): Adjust
calls to call_function_by_hand.
* m2-typeprint.c (m2_procedure): Handle functions with unknown
return type.
* objc-lang.c (lookup_objc_class, lookup_child_selector)
(value_nsstring, print_object_command): Adjust calls to
call_function_by_hand.
* p-typeprint.c (pascal_type_print_varspec_prefix): Handle
functions with unknown return type.
(pascal_type_print_func_varspec_suffix): New function.
(pascal_type_print_varspec_suffix) <TYPE_CODE_FUNC,
TYPE_CODE_METHOD>: Use it.
* python/py-value.c (valpy_call): Adjust call to
call_function_by_hand.
* rust-lang.c (rust_evaluate_funcall): Adjust call to
call_function_by_hand.
* valarith.c (value_x_binop, value_x_unop): Adjust calls to
call_function_by_hand.
* valops.c (value_allocate_space_in_inferior): Adjust call to
call_function_by_hand.
* typeprint.c (type_print_unknown_return_type): New function.
* typeprint.h (type_print_unknown_return_type): New declaration.
gdb/testsuite/ChangeLog:
2017-09-04 Pedro Alves <palves@redhat.com>
* gdb.base/break-main-file-remove-fail.exp (test_remove_bp): Cast
return type of munmap in infcall.
* gdb.base/break-probes.exp: Cast return type of foo in infcall.
* gdb.base/checkpoint.exp: Simplify using for loop. Cast return
type of ftell in infcall.
* gdb.base/dprintf-detach.exp (dprintf_detach_test): Cast return
type of getpid in infcall.
* gdb.base/infcall-exec.exp: Cast return type of execlp in
infcall.
* gdb.base/info-os.exp: Cast return type of getpid in infcall.
Bail on failure to extract the pid.
* gdb.base/nodebug.c: #include <stdint.h>.
(multf, multf_noproto, mult, mult_noproto, add8, add8_noproto):
New functions.
* gdb.base/nodebug.exp (test_call_promotion): New procedure.
Change expected output of print/whatis/ptype with functions with
no debug info. Test all supported languages. Call
test_call_promotion.
* gdb.compile/compile.exp: Adjust expected output to expect
warning.
* gdb.threads/siginfo-threads.exp: Likewise.
836 lines
22 KiB
C
836 lines
22 KiB
C
/* Support for printing Pascal types for GDB, the GNU debugger.
|
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Copyright (C) 2000-2017 Free Software Foundation, Inc.
|
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|
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This file is part of GDB.
|
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|
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This program is free software; you can redistribute it and/or modify
|
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it under the terms of the GNU General Public License as published by
|
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the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
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This program is distributed in the hope that it will be useful,
|
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but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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GNU General Public License for more details.
|
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|
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You should have received a copy of the GNU General Public License
|
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||
|
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/* This file is derived from p-typeprint.c */
|
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#include "defs.h"
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#include "gdb_obstack.h"
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#include "bfd.h" /* Binary File Description */
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "expression.h"
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#include "value.h"
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#include "gdbcore.h"
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#include "target.h"
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#include "language.h"
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#include "p-lang.h"
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#include "typeprint.h"
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#include "gdb-demangle.h"
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#include <ctype.h>
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static void pascal_type_print_varspec_suffix (struct type *, struct ui_file *,
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int, int, int,
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const struct type_print_options *);
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static void pascal_type_print_derivation_info (struct ui_file *,
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struct type *);
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/* LEVEL is the depth to indent lines by. */
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void
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pascal_print_type (struct type *type, const char *varstring,
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struct ui_file *stream, int show, int level,
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const struct type_print_options *flags)
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{
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enum type_code code;
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int demangled_args;
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code = TYPE_CODE (type);
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if (show > 0)
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type = check_typedef (type);
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if ((code == TYPE_CODE_FUNC
|
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|| code == TYPE_CODE_METHOD))
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{
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pascal_type_print_varspec_prefix (type, stream, show, 0, flags);
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}
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/* first the name */
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fputs_filtered (varstring, stream);
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if ((varstring != NULL && *varstring != '\0')
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&& !(code == TYPE_CODE_FUNC
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|| code == TYPE_CODE_METHOD))
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{
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fputs_filtered (" : ", stream);
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}
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|
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if (!(code == TYPE_CODE_FUNC
|
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|| code == TYPE_CODE_METHOD))
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{
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pascal_type_print_varspec_prefix (type, stream, show, 0, flags);
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}
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pascal_type_print_base (type, stream, show, level, flags);
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/* For demangled function names, we have the arglist as part of the name,
|
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so don't print an additional pair of ()'s. */
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demangled_args = varstring ? strchr (varstring, '(') != NULL : 0;
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pascal_type_print_varspec_suffix (type, stream, show, 0, demangled_args,
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flags);
|
||
|
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}
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/* Print a typedef using Pascal syntax. TYPE is the underlying type.
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NEW_SYMBOL is the symbol naming the type. STREAM is the stream on
|
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which to print. */
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void
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pascal_print_typedef (struct type *type, struct symbol *new_symbol,
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struct ui_file *stream)
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{
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type = check_typedef (type);
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fprintf_filtered (stream, "type ");
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fprintf_filtered (stream, "%s = ", SYMBOL_PRINT_NAME (new_symbol));
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type_print (type, "", stream, 0);
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fprintf_filtered (stream, ";\n");
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}
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/* If TYPE is a derived type, then print out derivation information.
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Print only the actual base classes of this type, not the base classes
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of the base classes. I.e. for the derivation hierarchy:
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|
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class A { int a; };
|
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class B : public A {int b; };
|
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class C : public B {int c; };
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|
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Print the type of class C as:
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class C : public B {
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int c;
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}
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Not as the following (like gdb used to), which is not legal C++ syntax for
|
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derived types and may be confused with the multiple inheritance form:
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class C : public B : public A {
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int c;
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}
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In general, gdb should try to print the types as closely as possible to
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the form that they appear in the source code. */
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static void
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pascal_type_print_derivation_info (struct ui_file *stream, struct type *type)
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{
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const char *name;
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int i;
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for (i = 0; i < TYPE_N_BASECLASSES (type); i++)
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{
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fputs_filtered (i == 0 ? ": " : ", ", stream);
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fprintf_filtered (stream, "%s%s ",
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BASETYPE_VIA_PUBLIC (type, i) ? "public" : "private",
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BASETYPE_VIA_VIRTUAL (type, i) ? " virtual" : "");
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name = type_name_no_tag (TYPE_BASECLASS (type, i));
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fprintf_filtered (stream, "%s", name ? name : "(null)");
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}
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if (i > 0)
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{
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fputs_filtered (" ", stream);
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}
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}
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/* Print the Pascal method arguments ARGS to the file STREAM. */
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void
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pascal_type_print_method_args (const char *physname, const char *methodname,
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struct ui_file *stream)
|
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{
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int is_constructor = (startswith (physname, "__ct__"));
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int is_destructor = (startswith (physname, "__dt__"));
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if (is_constructor || is_destructor)
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{
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physname += 6;
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}
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fputs_filtered (methodname, stream);
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if (physname && (*physname != 0))
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{
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fputs_filtered (" (", stream);
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/* We must demangle this. */
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while (isdigit (physname[0]))
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{
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int len = 0;
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int i, j;
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char *argname;
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while (isdigit (physname[len]))
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{
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len++;
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}
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i = strtol (physname, &argname, 0);
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physname += len;
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for (j = 0; j < i; ++j)
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fputc_filtered (physname[j], stream);
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physname += i;
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if (physname[0] != 0)
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{
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fputs_filtered (", ", stream);
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}
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}
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fputs_filtered (")", stream);
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}
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}
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/* Print any asterisks or open-parentheses needed before the
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variable name (to describe its type).
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On outermost call, pass 0 for PASSED_A_PTR.
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On outermost call, SHOW > 0 means should ignore
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any typename for TYPE and show its details.
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SHOW is always zero on recursive calls. */
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void
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pascal_type_print_varspec_prefix (struct type *type, struct ui_file *stream,
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int show, int passed_a_ptr,
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const struct type_print_options *flags)
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{
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if (type == 0)
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return;
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if (TYPE_NAME (type) && show <= 0)
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return;
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QUIT;
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switch (TYPE_CODE (type))
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{
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case TYPE_CODE_PTR:
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fprintf_filtered (stream, "^");
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pascal_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 1,
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flags);
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break; /* Pointer should be handled normally
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in pascal. */
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case TYPE_CODE_METHOD:
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if (passed_a_ptr)
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fprintf_filtered (stream, "(");
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if (TYPE_TARGET_TYPE (type) != NULL
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&& TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_VOID)
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{
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fprintf_filtered (stream, "function ");
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}
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else
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{
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fprintf_filtered (stream, "procedure ");
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}
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if (passed_a_ptr)
|
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{
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fprintf_filtered (stream, " ");
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pascal_type_print_base (TYPE_SELF_TYPE (type),
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stream, 0, passed_a_ptr, flags);
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fprintf_filtered (stream, "::");
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}
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break;
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case TYPE_CODE_REF:
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pascal_type_print_varspec_prefix (TYPE_TARGET_TYPE (type), stream, 0, 1,
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flags);
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fprintf_filtered (stream, "&");
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break;
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case TYPE_CODE_FUNC:
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if (passed_a_ptr)
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fprintf_filtered (stream, "(");
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if (TYPE_TARGET_TYPE (type) != NULL
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&& TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_VOID)
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{
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fprintf_filtered (stream, "function ");
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}
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else
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{
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fprintf_filtered (stream, "procedure ");
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}
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break;
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case TYPE_CODE_ARRAY:
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if (passed_a_ptr)
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fprintf_filtered (stream, "(");
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fprintf_filtered (stream, "array ");
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if (TYPE_LENGTH (TYPE_TARGET_TYPE (type)) > 0
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&& !TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (type))
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fprintf_filtered (stream, "[%s..%s] ",
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plongest (TYPE_ARRAY_LOWER_BOUND_VALUE (type)),
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plongest (TYPE_ARRAY_UPPER_BOUND_VALUE (type)));
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fprintf_filtered (stream, "of ");
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break;
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case TYPE_CODE_UNDEF:
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case TYPE_CODE_STRUCT:
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case TYPE_CODE_UNION:
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case TYPE_CODE_ENUM:
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case TYPE_CODE_INT:
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case TYPE_CODE_FLT:
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case TYPE_CODE_VOID:
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case TYPE_CODE_ERROR:
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case TYPE_CODE_CHAR:
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case TYPE_CODE_BOOL:
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case TYPE_CODE_SET:
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case TYPE_CODE_RANGE:
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case TYPE_CODE_STRING:
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case TYPE_CODE_COMPLEX:
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case TYPE_CODE_TYPEDEF:
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/* These types need no prefix. They are listed here so that
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gcc -Wall will reveal any types that haven't been handled. */
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break;
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default:
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error (_("type not handled in pascal_type_print_varspec_prefix()"));
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break;
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}
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}
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static void
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pascal_print_func_args (struct type *type, struct ui_file *stream,
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const struct type_print_options *flags)
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{
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int i, len = TYPE_NFIELDS (type);
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|
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if (len)
|
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{
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fprintf_filtered (stream, "(");
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}
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for (i = 0; i < len; i++)
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{
|
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if (i > 0)
|
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{
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fputs_filtered (", ", stream);
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wrap_here (" ");
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}
|
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/* Can we find if it is a var parameter ??
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if ( TYPE_FIELD(type, i) == )
|
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{
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fprintf_filtered (stream, "var ");
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} */
|
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pascal_print_type (TYPE_FIELD_TYPE (type, i), "" /* TYPE_FIELD_NAME
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seems invalid! */
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,stream, -1, 0, flags);
|
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}
|
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if (len)
|
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{
|
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fprintf_filtered (stream, ")");
|
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}
|
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}
|
||
|
||
/* Helper for pascal_type_print_varspec_suffix to print the suffix of
|
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a function or method. */
|
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|
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static void
|
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pascal_type_print_func_varspec_suffix (struct type *type, struct ui_file *stream,
|
||
int show, int passed_a_ptr,
|
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int demangled_args,
|
||
const struct type_print_options *flags)
|
||
{
|
||
if (TYPE_TARGET_TYPE (type) == NULL
|
||
|| TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_VOID)
|
||
{
|
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fprintf_filtered (stream, " : ");
|
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pascal_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
|
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stream, 0, 0, flags);
|
||
|
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if (TYPE_TARGET_TYPE (type) == NULL)
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type_print_unknown_return_type (stream);
|
||
else
|
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pascal_type_print_base (TYPE_TARGET_TYPE (type), stream, show, 0,
|
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flags);
|
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|
||
pascal_type_print_varspec_suffix (TYPE_TARGET_TYPE (type), stream, 0,
|
||
passed_a_ptr, 0, flags);
|
||
}
|
||
}
|
||
|
||
/* Print any array sizes, function arguments or close parentheses
|
||
needed after the variable name (to describe its type).
|
||
Args work like pascal_type_print_varspec_prefix. */
|
||
|
||
static void
|
||
pascal_type_print_varspec_suffix (struct type *type, struct ui_file *stream,
|
||
int show, int passed_a_ptr,
|
||
int demangled_args,
|
||
const struct type_print_options *flags)
|
||
{
|
||
if (type == 0)
|
||
return;
|
||
|
||
if (TYPE_NAME (type) && show <= 0)
|
||
return;
|
||
|
||
QUIT;
|
||
|
||
switch (TYPE_CODE (type))
|
||
{
|
||
case TYPE_CODE_ARRAY:
|
||
if (passed_a_ptr)
|
||
fprintf_filtered (stream, ")");
|
||
break;
|
||
|
||
case TYPE_CODE_METHOD:
|
||
if (passed_a_ptr)
|
||
fprintf_filtered (stream, ")");
|
||
pascal_type_print_method_args ("",
|
||
"",
|
||
stream);
|
||
pascal_type_print_func_varspec_suffix (type, stream, show,
|
||
passed_a_ptr, 0, flags);
|
||
break;
|
||
|
||
case TYPE_CODE_PTR:
|
||
case TYPE_CODE_REF:
|
||
pascal_type_print_varspec_suffix (TYPE_TARGET_TYPE (type),
|
||
stream, 0, 1, 0, flags);
|
||
break;
|
||
|
||
case TYPE_CODE_FUNC:
|
||
if (passed_a_ptr)
|
||
fprintf_filtered (stream, ")");
|
||
if (!demangled_args)
|
||
pascal_print_func_args (type, stream, flags);
|
||
pascal_type_print_func_varspec_suffix (type, stream, show,
|
||
passed_a_ptr, 0, flags);
|
||
break;
|
||
|
||
case TYPE_CODE_UNDEF:
|
||
case TYPE_CODE_STRUCT:
|
||
case TYPE_CODE_UNION:
|
||
case TYPE_CODE_ENUM:
|
||
case TYPE_CODE_INT:
|
||
case TYPE_CODE_FLT:
|
||
case TYPE_CODE_VOID:
|
||
case TYPE_CODE_ERROR:
|
||
case TYPE_CODE_CHAR:
|
||
case TYPE_CODE_BOOL:
|
||
case TYPE_CODE_SET:
|
||
case TYPE_CODE_RANGE:
|
||
case TYPE_CODE_STRING:
|
||
case TYPE_CODE_COMPLEX:
|
||
case TYPE_CODE_TYPEDEF:
|
||
/* These types do not need a suffix. They are listed so that
|
||
gcc -Wall will report types that may not have been considered. */
|
||
break;
|
||
default:
|
||
error (_("type not handled in pascal_type_print_varspec_suffix()"));
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Print the name of the type (or the ultimate pointer target,
|
||
function value or array element), or the description of a
|
||
structure or union.
|
||
|
||
SHOW positive means print details about the type (e.g. enum values),
|
||
and print structure elements passing SHOW - 1 for show.
|
||
SHOW negative means just print the type name or struct tag if there is one.
|
||
If there is no name, print something sensible but concise like
|
||
"struct {...}".
|
||
SHOW zero means just print the type name or struct tag if there is one.
|
||
If there is no name, print something sensible but not as concise like
|
||
"struct {int x; int y;}".
|
||
|
||
LEVEL is the number of spaces to indent by.
|
||
We increase it for some recursive calls. */
|
||
|
||
void
|
||
pascal_type_print_base (struct type *type, struct ui_file *stream, int show,
|
||
int level, const struct type_print_options *flags)
|
||
{
|
||
int i;
|
||
int len;
|
||
LONGEST lastval;
|
||
enum
|
||
{
|
||
s_none, s_public, s_private, s_protected
|
||
}
|
||
section_type;
|
||
|
||
QUIT;
|
||
wrap_here (" ");
|
||
if (type == NULL)
|
||
{
|
||
fputs_filtered ("<type unknown>", stream);
|
||
return;
|
||
}
|
||
|
||
/* void pointer */
|
||
if ((TYPE_CODE (type) == TYPE_CODE_PTR)
|
||
&& (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_VOID))
|
||
{
|
||
fputs_filtered (TYPE_NAME (type) ? TYPE_NAME (type) : "pointer",
|
||
stream);
|
||
return;
|
||
}
|
||
/* When SHOW is zero or less, and there is a valid type name, then always
|
||
just print the type name directly from the type. */
|
||
|
||
if (show <= 0
|
||
&& TYPE_NAME (type) != NULL)
|
||
{
|
||
fputs_filtered (TYPE_NAME (type), stream);
|
||
return;
|
||
}
|
||
|
||
type = check_typedef (type);
|
||
|
||
switch (TYPE_CODE (type))
|
||
{
|
||
case TYPE_CODE_TYPEDEF:
|
||
case TYPE_CODE_PTR:
|
||
case TYPE_CODE_REF:
|
||
/* case TYPE_CODE_FUNC:
|
||
case TYPE_CODE_METHOD: */
|
||
pascal_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level,
|
||
flags);
|
||
break;
|
||
|
||
case TYPE_CODE_ARRAY:
|
||
/* pascal_type_print_varspec_prefix (TYPE_TARGET_TYPE (type),
|
||
stream, 0, 0);
|
||
pascal_type_print_base (TYPE_TARGET_TYPE (type),
|
||
stream, show, level);
|
||
pascal_type_print_varspec_suffix (TYPE_TARGET_TYPE (type),
|
||
stream, 0, 0, 0); */
|
||
pascal_print_type (TYPE_TARGET_TYPE (type), NULL, stream, 0, 0, flags);
|
||
break;
|
||
|
||
case TYPE_CODE_FUNC:
|
||
case TYPE_CODE_METHOD:
|
||
/*
|
||
pascal_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level);
|
||
only after args !! */
|
||
break;
|
||
case TYPE_CODE_STRUCT:
|
||
if (TYPE_TAG_NAME (type) != NULL)
|
||
{
|
||
fputs_filtered (TYPE_TAG_NAME (type), stream);
|
||
fputs_filtered (" = ", stream);
|
||
}
|
||
if (HAVE_CPLUS_STRUCT (type))
|
||
{
|
||
fprintf_filtered (stream, "class ");
|
||
}
|
||
else
|
||
{
|
||
fprintf_filtered (stream, "record ");
|
||
}
|
||
goto struct_union;
|
||
|
||
case TYPE_CODE_UNION:
|
||
if (TYPE_TAG_NAME (type) != NULL)
|
||
{
|
||
fputs_filtered (TYPE_TAG_NAME (type), stream);
|
||
fputs_filtered (" = ", stream);
|
||
}
|
||
fprintf_filtered (stream, "case <?> of ");
|
||
|
||
struct_union:
|
||
wrap_here (" ");
|
||
if (show < 0)
|
||
{
|
||
/* If we just printed a tag name, no need to print anything else. */
|
||
if (TYPE_TAG_NAME (type) == NULL)
|
||
fprintf_filtered (stream, "{...}");
|
||
}
|
||
else if (show > 0 || TYPE_TAG_NAME (type) == NULL)
|
||
{
|
||
pascal_type_print_derivation_info (stream, type);
|
||
|
||
fprintf_filtered (stream, "\n");
|
||
if ((TYPE_NFIELDS (type) == 0) && (TYPE_NFN_FIELDS (type) == 0))
|
||
{
|
||
if (TYPE_STUB (type))
|
||
fprintfi_filtered (level + 4, stream, "<incomplete type>\n");
|
||
else
|
||
fprintfi_filtered (level + 4, stream, "<no data fields>\n");
|
||
}
|
||
|
||
/* Start off with no specific section type, so we can print
|
||
one for the first field we find, and use that section type
|
||
thereafter until we find another type. */
|
||
|
||
section_type = s_none;
|
||
|
||
/* If there is a base class for this type,
|
||
do not print the field that it occupies. */
|
||
|
||
len = TYPE_NFIELDS (type);
|
||
for (i = TYPE_N_BASECLASSES (type); i < len; i++)
|
||
{
|
||
QUIT;
|
||
/* Don't print out virtual function table. */
|
||
if ((startswith (TYPE_FIELD_NAME (type, i), "_vptr"))
|
||
&& is_cplus_marker ((TYPE_FIELD_NAME (type, i))[5]))
|
||
continue;
|
||
|
||
/* If this is a pascal object or class we can print the
|
||
various section labels. */
|
||
|
||
if (HAVE_CPLUS_STRUCT (type))
|
||
{
|
||
if (TYPE_FIELD_PROTECTED (type, i))
|
||
{
|
||
if (section_type != s_protected)
|
||
{
|
||
section_type = s_protected;
|
||
fprintfi_filtered (level + 2, stream,
|
||
"protected\n");
|
||
}
|
||
}
|
||
else if (TYPE_FIELD_PRIVATE (type, i))
|
||
{
|
||
if (section_type != s_private)
|
||
{
|
||
section_type = s_private;
|
||
fprintfi_filtered (level + 2, stream, "private\n");
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (section_type != s_public)
|
||
{
|
||
section_type = s_public;
|
||
fprintfi_filtered (level + 2, stream, "public\n");
|
||
}
|
||
}
|
||
}
|
||
|
||
print_spaces_filtered (level + 4, stream);
|
||
if (field_is_static (&TYPE_FIELD (type, i)))
|
||
fprintf_filtered (stream, "static ");
|
||
pascal_print_type (TYPE_FIELD_TYPE (type, i),
|
||
TYPE_FIELD_NAME (type, i),
|
||
stream, show - 1, level + 4, flags);
|
||
if (!field_is_static (&TYPE_FIELD (type, i))
|
||
&& TYPE_FIELD_PACKED (type, i))
|
||
{
|
||
/* It is a bitfield. This code does not attempt
|
||
to look at the bitpos and reconstruct filler,
|
||
unnamed fields. This would lead to misleading
|
||
results if the compiler does not put out fields
|
||
for such things (I don't know what it does). */
|
||
fprintf_filtered (stream, " : %d",
|
||
TYPE_FIELD_BITSIZE (type, i));
|
||
}
|
||
fprintf_filtered (stream, ";\n");
|
||
}
|
||
|
||
/* If there are both fields and methods, put a space between. */
|
||
len = TYPE_NFN_FIELDS (type);
|
||
if (len && section_type != s_none)
|
||
fprintf_filtered (stream, "\n");
|
||
|
||
/* Object pascal: print out the methods. */
|
||
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
struct fn_field *f = TYPE_FN_FIELDLIST1 (type, i);
|
||
int j, len2 = TYPE_FN_FIELDLIST_LENGTH (type, i);
|
||
const char *method_name = TYPE_FN_FIELDLIST_NAME (type, i);
|
||
|
||
/* this is GNU C++ specific
|
||
how can we know constructor/destructor?
|
||
It might work for GNU pascal. */
|
||
for (j = 0; j < len2; j++)
|
||
{
|
||
const char *physname = TYPE_FN_FIELD_PHYSNAME (f, j);
|
||
|
||
int is_constructor = (startswith (physname, "__ct__"));
|
||
int is_destructor = (startswith (physname, "__dt__"));
|
||
|
||
QUIT;
|
||
if (TYPE_FN_FIELD_PROTECTED (f, j))
|
||
{
|
||
if (section_type != s_protected)
|
||
{
|
||
section_type = s_protected;
|
||
fprintfi_filtered (level + 2, stream,
|
||
"protected\n");
|
||
}
|
||
}
|
||
else if (TYPE_FN_FIELD_PRIVATE (f, j))
|
||
{
|
||
if (section_type != s_private)
|
||
{
|
||
section_type = s_private;
|
||
fprintfi_filtered (level + 2, stream, "private\n");
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (section_type != s_public)
|
||
{
|
||
section_type = s_public;
|
||
fprintfi_filtered (level + 2, stream, "public\n");
|
||
}
|
||
}
|
||
|
||
print_spaces_filtered (level + 4, stream);
|
||
if (TYPE_FN_FIELD_STATIC_P (f, j))
|
||
fprintf_filtered (stream, "static ");
|
||
if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)) == 0)
|
||
{
|
||
/* Keep GDB from crashing here. */
|
||
fprintf_filtered (stream, "<undefined type> %s;\n",
|
||
TYPE_FN_FIELD_PHYSNAME (f, j));
|
||
break;
|
||
}
|
||
|
||
if (is_constructor)
|
||
{
|
||
fprintf_filtered (stream, "constructor ");
|
||
}
|
||
else if (is_destructor)
|
||
{
|
||
fprintf_filtered (stream, "destructor ");
|
||
}
|
||
else if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)) != 0
|
||
&& TYPE_CODE (TYPE_TARGET_TYPE (
|
||
TYPE_FN_FIELD_TYPE (f, j))) != TYPE_CODE_VOID)
|
||
{
|
||
fprintf_filtered (stream, "function ");
|
||
}
|
||
else
|
||
{
|
||
fprintf_filtered (stream, "procedure ");
|
||
}
|
||
/* This does not work, no idea why !! */
|
||
|
||
pascal_type_print_method_args (physname,
|
||
method_name,
|
||
stream);
|
||
|
||
if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)) != 0
|
||
&& TYPE_CODE (TYPE_TARGET_TYPE (
|
||
TYPE_FN_FIELD_TYPE (f, j))) != TYPE_CODE_VOID)
|
||
{
|
||
fputs_filtered (" : ", stream);
|
||
type_print (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)),
|
||
"", stream, -1);
|
||
}
|
||
if (TYPE_FN_FIELD_VIRTUAL_P (f, j))
|
||
fprintf_filtered (stream, "; virtual");
|
||
|
||
fprintf_filtered (stream, ";\n");
|
||
}
|
||
}
|
||
fprintfi_filtered (level, stream, "end");
|
||
}
|
||
break;
|
||
|
||
case TYPE_CODE_ENUM:
|
||
if (TYPE_TAG_NAME (type) != NULL)
|
||
{
|
||
fputs_filtered (TYPE_TAG_NAME (type), stream);
|
||
if (show > 0)
|
||
fputs_filtered (" ", stream);
|
||
}
|
||
/* enum is just defined by
|
||
type enume_name = (enum_member1,enum_member2,...) */
|
||
fprintf_filtered (stream, " = ");
|
||
wrap_here (" ");
|
||
if (show < 0)
|
||
{
|
||
/* If we just printed a tag name, no need to print anything else. */
|
||
if (TYPE_TAG_NAME (type) == NULL)
|
||
fprintf_filtered (stream, "(...)");
|
||
}
|
||
else if (show > 0 || TYPE_TAG_NAME (type) == NULL)
|
||
{
|
||
fprintf_filtered (stream, "(");
|
||
len = TYPE_NFIELDS (type);
|
||
lastval = 0;
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
QUIT;
|
||
if (i)
|
||
fprintf_filtered (stream, ", ");
|
||
wrap_here (" ");
|
||
fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
|
||
if (lastval != TYPE_FIELD_ENUMVAL (type, i))
|
||
{
|
||
fprintf_filtered (stream,
|
||
" := %s",
|
||
plongest (TYPE_FIELD_ENUMVAL (type, i)));
|
||
lastval = TYPE_FIELD_ENUMVAL (type, i);
|
||
}
|
||
lastval++;
|
||
}
|
||
fprintf_filtered (stream, ")");
|
||
}
|
||
break;
|
||
|
||
case TYPE_CODE_VOID:
|
||
fprintf_filtered (stream, "void");
|
||
break;
|
||
|
||
case TYPE_CODE_UNDEF:
|
||
fprintf_filtered (stream, "record <unknown>");
|
||
break;
|
||
|
||
case TYPE_CODE_ERROR:
|
||
fprintf_filtered (stream, "%s", TYPE_ERROR_NAME (type));
|
||
break;
|
||
|
||
/* this probably does not work for enums. */
|
||
case TYPE_CODE_RANGE:
|
||
{
|
||
struct type *target = TYPE_TARGET_TYPE (type);
|
||
|
||
print_type_scalar (target, TYPE_LOW_BOUND (type), stream);
|
||
fputs_filtered ("..", stream);
|
||
print_type_scalar (target, TYPE_HIGH_BOUND (type), stream);
|
||
}
|
||
break;
|
||
|
||
case TYPE_CODE_SET:
|
||
fputs_filtered ("set of ", stream);
|
||
pascal_print_type (TYPE_INDEX_TYPE (type), "", stream,
|
||
show - 1, level, flags);
|
||
break;
|
||
|
||
case TYPE_CODE_STRING:
|
||
fputs_filtered ("String", stream);
|
||
break;
|
||
|
||
default:
|
||
/* Handle types not explicitly handled by the other cases,
|
||
such as fundamental types. For these, just print whatever
|
||
the type name is, as recorded in the type itself. If there
|
||
is no type name, then complain. */
|
||
if (TYPE_NAME (type) != NULL)
|
||
{
|
||
fputs_filtered (TYPE_NAME (type), stream);
|
||
}
|
||
else
|
||
{
|
||
/* At least for dump_symtab, it is important that this not be
|
||
an error (). */
|
||
fprintf_filtered (stream, "<invalid unnamed pascal type code %d>",
|
||
TYPE_CODE (type));
|
||
}
|
||
break;
|
||
}
|
||
}
|