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[IA64] make unwinder stop at last frame of the bootloader

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Add a dummy nop at the end of _start() to maintain the invariant that
the return-pointer (rp) always point to the calling function.  This
makes unwinding stop at the last frame, as it should.

Signed-off-by: David Mosberger-Tang <dmosberger@gmail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
David Mosberger-Tang 2007-08-09 16:54:27 -06:00 committed by Tony Luck
parent a1287476e8
commit 5d36aa9bbe
1 changed files with 1 additions and 0 deletions
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arch/ia64/hp/sim/boot/boot_head.S
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@ -26,6 +26,7 @@ GLOBAL_ENTRY(_start)
movl sp = stack_mem+16384-16
bsw.1
br.call.sptk.many rp=start_bootloader
0: nop 0 /* dummy nop to make unwinding work */
END(_start)
/*