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Re: [Libunwind-devel] [PATCH] restore "x0" and "x1" registers
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From: |
Yvan Roux |
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Subject: |
Re: [Libunwind-devel] [PATCH] restore "x0" and "x1" registers |
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Date: |
Thu, 25 Sep 2014 16:59:15 +0200 |
Hi (sorry I was on a trip)
>> This patch is needed for us in AARCH64 - Restore "x0" and "x1" registers
>> because they contain exception pointer and selector.
According to the unw_resume() description for local unwinding,
restoring the machine state when no signal is involved only restore
the callee-saved registers (r19..r28 for AArch64 + the link register
r30).
Can you give me more input here why it is needed ?
Thanks,
Yvan