On 22/07/2016 15:39, Sebastian Huber wrote:
On 22/07/16 07:30, Chris Johns wrote:
On 22/07/2016 15:26, Sebastian Huber wrote:
Could we please use the _CPU_* prefix only for stuff defined by the CPU
port interface and use something like _I386_* for things that are
specific to a particular architecture.
I would like this to be added to the formal _CPU_* port interface.
Without the marker the CPU will not able to support proper debugging.
I see the patch as correct.
To me this looks quite x86 specific.
This is the current target I am working on and the only one I have
looked at.
How would you set and use this
marker on ARM, PowerPC and SPARC for example?
I have not looked at the ARM in detail and would have to look up the
instructions but a guess would be 'L_restore:' in arm/cpu_asm.S. I do
not use the PowerPC or SPARC.
The requirement is the marker is the address to set the PC (IP) along
with the registers held in the TCB so a valid stack frame exists that a
DWARF unwind'er can unwind. It must exist somewhere in each system or
the context could not be restored.
Chris
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