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ptrace: unify FDPIC implementations

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The Blackfin/FRV/SuperH guys all have the same exact FDPIC ptrace code in
their arch handlers (since they were probably copied & pasted).  Since
these ptrace interfaces are an arch independent aspect of the FDPIC code,
unify them in the common ptrace code so new FDPIC ports don't need to copy
and paste this fundamental stuff yet again.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Roland McGrath <roland@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mike Frysinger 2010-05-26 14:42:52 -07:00 • committed by Linus Torvalds
parent 0ac0c0d0f8
commit 9c1a125921
4 changed files with 29 additions and 67 deletions
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20
kernel/ptrace.c
View file

@ -594,6 +594,26 @@ int ptrace_request(struct task_struct *child, long request,
ret = ptrace_detach(child, data);
break;
#ifdef CONFIG_BINFMT_ELF_FDPIC
case PTRACE_GETFDPIC: {
unsigned long tmp = 0;
switch (addr) {
case PTRACE_GETFDPIC_EXEC:
tmp = child->mm->context.exec_fdpic_loadmap;
break;
case PTRACE_GETFDPIC_INTERP:
tmp = child->mm->context.interp_fdpic_loadmap;
break;
default:
break;
}
ret = put_user(tmp, (unsigned long __user *) data);
break;
}
#endif
#ifdef PTRACE_SINGLESTEP
case PTRACE_SINGLESTEP:
#endif