Re: [sdcc-devel] SDCC stm8 debug info

[Åke R. <ake...@gm...>]

On 2017-05-10 21:46, Philipp Klaus Krause wrote:
> Am 10.05.2017 um 21:30 schrieb Åke Rehnman:
>> Hello Philip,
>> I assume you mean the trouble with bool variables is incorrectly encoded
>> as floats?
> No, I meant the frame base issue.
>
To make the frame unwinding work in gdb the frame base has to be 
constantly adjusted (call to updateCFA) when ever the stack pointer is 
moved (e.i things pushed or popped from the stack). The hc08 makes those 
push and pops in a few well defined functions perhaps total 5-10 places. 
As opposed to the stm8 code since it is lacking pushReg() and popReg() 
functions resulting in stack adjustments are made all over the place.

So to make debugging work with CFA the first job would be to clean up 
the code and move the stack operations into a few well defined places 
similar to hc08. Since that work involves a lot of changes I was a bit 
hesitant to make those changes since that would result in quite 
difficult merges whenever the stm8 gen code change.

/Ake