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Question about "hal_thread_load_context" in sparc
- From: "Qiang Huang" <jameshq at liverpool dot ac dot uk>
- To: <ecos-discuss at sources dot redhat dot com>
- Date: Tue, 10 Sep 2002 17:20:12 +0100
- Subject: [ECOS] Question about "hal_thread_load_context" in sparc
Hi all:
I have some questions about the "hal_thread_load_context" in Sparc, hope
anybody can help me, Thanks a lot!
Q1.
In the "hal_thread_load_context" I just can find out that only the last one
register window of the destination thread is restored, why we don't need to
restore the whole set of register windows.(not just one)? Or I miss anything
in the source?
Q2.
In the icontext.c file the initialising the thread context why we need to
set the following code:
regs->o[7] = (entry - 8); // why we need to set it (-8) ? how to calculate
the -8?
Thanks a lot!
Best regards!
qiang
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