general comments on sysiinit patches

[Sebastian Huber]

On 26/01/16 17:02, Sebastian Huber wrote:
>
>>
>> + Do you have any size metrics for current --disable-posix on a BSP 
>> with function sections enabled versus this new way?
>
> No, I was not interested in this comparison since my goal is to always 
> enable POSIX in the long run. The size will drop a bit. I used the SIS 
> BSP for comparison since it uses the function/data sections for quite 
> a while. 

Here are the numbers with POSIX disabled:

The POSIX API is disabled in 4.9, 4.10, 4.11.  In 4.12 sizes are 
presented with
POSIX enabled/disabled with the linker set based initialization.  In 
addition
the Newlib internal locks are enabled in version 4.12.

Executable sizes for the SPARC/SIS ticker.exe.

||              ||= Text =||= Data =||= BSS =||= Workspace =||= Non-Text =||
||= 4.9        =||  80384 ||   2532 ||  2996 ||       51432 || 56960 ||
||= 4.10       =|| 124384 ||   1828 ||  2384 ||       51056 || 55268 ||
||= 4.11       =|| 100592 ||   1616 ||  7008 ||       44120 || 52744 ||
||= 4.12/POSIX =|| 101680 ||   1808 ||  6592 ||       45336 || 53736 ||
||= 4.12       =|| 101472 ||   1808 ||  6528 ||       44336 || 52672 ||

The huge increase in the test size from 4.9 to 4.10 is mostly due to the
introduction of the pipe() support which pulls in sprintf().

The increase of the BSS section from 4.10 to 4.11 is due to the static
initialization of the scheduler data structures (move from workspace to 
BSS).

Executable sizes for the SPARC/SIS minimum.exe.

||              ||= Text =||= Data =||= BSS =||= Workspace =||= Non-Text =||
||= 4.9        =||  45808 ||   2324 ||  2708 ||        3288 || 8320 ||
||= 4.10       =||  30032 ||   1300 ||  1296 ||        3240 || 5836 ||
||= 4.11       =||  34032 ||    320 ||  2976 ||        2000 || 5296 ||
||= 4.12/POSIX =||  29104 ||    272 ||  2304 ||        2128 || 4704 ||
||= 4.12       =||  28976 ||    272 ||  2240 ||        1928 || 4440 ||

-- 
Sebastian Huber, embedded brains GmbH

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