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[ARM] Add identifying number for non-rt sigframe 

GDB couldn't reliably tell the difference between the old and new
non-rt sigframes, so provide it with a number at the beginning which
will never appear in the old sigframe, and hence provide gdb with a
reliable way to tell the two apart.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2006-06-24 22:41:09 +01:00 committed by Russell King
parent aca6ca1097
commit ca195cfec9
1 changed files with 5 additions and 0 deletions
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5
arch/arm/kernel/signal.c
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@ -470,6 +470,11 @@ setup_frame(int usig, struct k_sigaction *ka, sigset_t *set, struct pt_regs *reg
if (!frame) if (!frame)
return 1; return 1;
/*
* Set uc.uc_flags to a value which sc.trap_no would never have.
*/
__put_user_error(0x5ac3c35a, &frame->uc.uc_flags, err);
err |= setup_sigframe(frame, regs, set); err |= setup_sigframe(frame, regs, set);
if (err == 0) if (err == 0)
err = setup_return(regs, ka, frame->retcode, frame, usig); err = setup_return(regs, ka, frame->retcode, frame, usig);