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[Bug 1001607] Cortex-M4F architectural Floating Point Support

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Ilija Kocho <> changed:

           What    |Removed                     |Added
   Attachment #1921|0                           |1
        is obsolete|                            |

--- Comment #33 from Ilija Kocho <> 2012-11-06 20:54:04 GMT ---
Created an attachment (id=1979)
 --> (
Cortex-M4F Floating Point Support 121106

I think that I got a solution for CFLAGS/LDFLAGS management.

The problem was that, as it occurs to me, if several CDL components manipulate
a string [by means of !is_substr()/is_substr()] they do it in a concurrent
manner. I am not familiar with configtool internal structure but it looked like
race conditions...

Therefore I decided to move all operations in a single CDL that is
CYGBLD_ARCH_CPUFLAGS. Besides working smoothly it also solves the following
   - Home place for FLAGS related "requires" commands,
   - Extensibility: New flags can be added in future,
   - Maintenance: All FLAGS operation on architectural level is consolidated in
a single CDL.
   - Compatibility: No tackling with FLAGS on platform level. Platform need
only to implement an interface. Look for example in STM 32 patch (untested in
   - Simplicity: I hope so :-) 

My ability for testing is limited during this and following week, but from what
I could see it operates as it should.

As I have a feeling that we are approaching our goal I would like to do some
shaping work. One question is where is best place to put the tests. They stem
from kernel tests, should I place them there or under Cortex-M architecture?

So far I only run tests on Kinetis. I would appreciate if somebody tries


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