Date: Thu, 7 Dec 2000 15:30:51 -0500 (EST) From: Zhiui Zhang <zzhang@cs.binghamton.edu> To: Brian Dean <bsd@bsdhome.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: ptrace(PT_GETDBREGS) message in remote debugging Message-ID: <Pine.SOL.4.21.0012071528160.21496-100000@onyx> In-Reply-To: <20001206194209.B94389@vger.bsdhome.com>
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Thanks. I tried this on FreeBSD 4.2-Release (because I do not have a
stable or current), but I failed:
# make
Warning: Object directory not changed from original
/usr/src/gnu/usr.bin/binutils/gdb
cc: ../libbfd/libbfd.a: No such file or directory
cc: ../libopcodes/libopcodes.a: No such file or directory
cc: ../libiberty/libiberty.a: No such file or directory
*** Error code 1
Stop in /usr/src/gnu/usr.bin/binutils/gdb.
What should I do?
-Zhihui
On Wed, 6 Dec 2000, Brian Dean wrote:
> Index: freebsd-nat.c
> ===================================================================
> RCS file: /usr00/FreeBSD/mirror/ncvs/src/gnu/usr.bin/binutils/gdb/i386/freebsd-nat.c,v
> retrieving revision 1.21.4.2
> diff -u -r1.21.4.2 freebsd-nat.c
> --- freebsd-nat.c 2000/08/22 12:28:19 1.21.4.2
> +++ freebsd-nat.c 2000/12/07 00:31:52
> @@ -478,14 +478,16 @@
> {
> struct dbreg dbr;
> extern int inferior_pid;
> -
> +
> if (inferior_pid != 0 && core_bfd == NULL)
> {
> int pid = inferior_pid & ((1 << 17) - 1); /* XXX extract pid from tid */
> -
> +
> if (ptrace(PT_GETDBREGS, pid, (caddr_t)&dbr, 0) == -1)
> {
> - perror("ptrace(PT_GETDBREGS) failed");
> + /* don't complain on ESRCH, assume we are debugging a remote target */
> + if (errno != ESRCH)
> + perror("ptrace(PT_GETDBREGS) failed");
> return 0;
> }
> #if WATCHPOINT_DEBUG > 1
> @@ -520,7 +522,10 @@
>
> if (ptrace(PT_GETDBREGS, pid, (caddr_t)&dbr, 0) == -1)
> {
> - perror("ptrace(PT_GETDBREGS) failed");
> + /* don't complain on ESRCH, assume we are debugging a remote target */
> + if (errno != ESRCH)
> + perror("ptrace(PT_GETDBREGS) failed");
> +
> return 0;
> }
>
> @@ -615,7 +620,9 @@
>
> if (ptrace(PT_GETDBREGS, pid, (caddr_t)&dbr, 0) == -1)
> {
> - perror("ptrace(PT_GETDBREGS) failed");
> + /* don't complain on ESRCH, assume we are debugging a remote target */
> + if (errno != ESRCH)
> + perror("ptrace(PT_GETDBREGS) failed");
> return 0;
> }
>
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