Package: gdb-multiarch
Version: 7.7.1+dfsg-5
Severity: normal
Dear GDB Maintainers,
It's quite common to have a 64-bit kernel and 32-bit userspace in
Debian, eg powerpc and sparc, where 64-bit userspace is not fully or
officially supported.
It appears that gdb-multiarch:powerpc fails to debug any ppc64
programs. Similarly gdb-multiarch:i386 cannot debug amd64 programs.
Perhaps it's more useful to have gdb-multiarch:powerpc as a meta
package that depends on gdb-multiarch:ppc64. (also for other 32/64
arch pairs.)
Regards,
Yixuan
A test case, with ppc64 kernel, powerpc userspace, and a ppc64 chroot.
(powerpc) $ cat > hello.c
#include <stdio.h>
int main() {
printf("hello\n");
return 0;
}
(ppc64) $ gcc -static -ggdb -m64 hello.c -o hello
(powerpc) $ gdb-multiarch ./hello
Reading symbols from ./hello...done.
(gdb) start
Temporary breakpoint 1 at 0x100013a4: file hello.c, line 4.
Starting program: .../hello
warning: Selected architecture powerpc:common64 is not compatible with reported
target architecture powerpc:common
warning: Architecture rejected target-supplied description
Program received signal SIGTRAP, Trace/breakpoint trap.
0x100013a40002d032 in ?? ()
(gdb) c
Continuing.
Program received signal SIGTRAP, Trace/breakpoint trap.
0x100013a40002d032 in ?? ()
(gdb) n
Cannot find bounds of current function
(gdb)
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