From: marcusd@cathcart.sysc.pdx.edu (Marcus G. Daniels)
To: Ovidiu Predescu <ovidiu@aracnet.com>
Cc: Scott Christley <scottc@net-community.com>, egcs@cygnus.com
Subject: Re: GCC/ObjC enhancements, comments requested
Date: Mon, 09 Feb 1998 11:31:00 -0000 [thread overview]
Message-ID: <rfira5cendy.fsf@cathcart.sysc.pdx.edu> (raw)
In-Reply-To: <199802090632.WAA09654@aracnet.com>
>>>>> "OP" == Ovidiu Predescu <ovidiu@aracnet.com> writes:
MD> Hey, if worse came to worst, "gcc -g" generates this knowledge.
MD> Looks to me like "objdump --debugging" reports everything that's
MD> needed. Link in GNU BFD and load up them reflection data
MD> structures!
OP> BFD can't help us here because it gives information only on the
OP> name of the functions contained in an object file, the argument
OP> types are lost (at least for C and C++ functions, ObjC does encode
OP> the argument and return value types of each method).
Nuhhhh-uhhhhh! Lookie:
mgd@wijiji[~] $ cat hello.c
static void
twoargs (int val, const char *msg)
{
printf ("%d %s\n", val, msg);
}
main ()
{
twoargs (1, "Hello World");
}
mgd@wijiji[~] $ gcc -g hello.c -o hello
mgd@wijiji[~] $ objdump --debugging hello | less
[....CHOMP....]
static void twoargs (int val /* 0x44 */, char *msg /* 0x48 */)
{ /* 0x108e8 */
/* file /net/pele/disk12/Users/mgd/hello.c line 3 addr 0x108e8 */
/* file /net/pele/disk12/Users/mgd/hello.c line 4 addr 0x108f4 */
/* file /net/pele/disk12/Users/mgd/hello.c line 5 addr 0x1090c */
/* file /net/pele/disk12/Users/mgd/hello.c line 5 addr 0x1090c */
} /* 0x10914 */
int main ()
{ /* 0x10914 */
/* file /net/pele/disk12/Users/mgd/hello.c line 8 addr 0x10914 */
/* file /net/pele/disk12/Users/mgd/hello.c line 9 addr 0x10918 */
/* file /net/pele/disk12/Users/mgd/hello.c line 10 addr 0x1092c */
} /* 0x10934 */
[....CHOMP....]
(Now requiring and loading up debugging information is probably much
to expensive a proposition, but clearly the compiler is setup to save
this stuff.)
next prev parent reply other threads:[~1998-02-09 11:31 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-02-07 18:11 Scott Christley
1998-02-07 22:43 ` Richard Henderson
1998-02-08 10:21 ` Scott Christley
1998-02-10 3:34 ` Richard Henderson
1998-02-10 14:45 ` Anthony Green
1998-02-08 10:27 ` Ovidiu Predescu
1998-02-08 13:12 ` Marcus G. Daniels
1998-02-08 22:32 ` Ovidiu Predescu
1998-02-09 7:43 ` Bruno Haible
1998-02-09 15:33 ` Ovidiu Predescu
[not found] ` <199802092146.WAA04183@halles.ilog.fr>
1998-02-10 10:58 ` Ovidiu Predescu
1998-02-10 14:45 ` Joern Rennecke
1998-02-09 11:31 ` Marcus G. Daniels [this message]
1998-02-10 3:34 ` Richard Henderson
1998-02-10 10:58 ` Ovidiu Predescu
1998-02-09 14:46 ` Anthony Green
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