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Ilija Kocho <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- Attachment #1816|0 |1 is obsolete| | Attachment #1893|0 |1 is obsolete| | --- Comment #27 from Ilija Kocho <[email protected]> 2012-08-29 20:34:27 BST --- Created an attachment (id=1915) --> (http://bugs.ecos.sourceware.org/attachment.cgi?id=1915) Cortex-M4F Floating Point Support 120829 Hi Jifl and others. Here is the integral patch for Cortex-M4F architectural floating point support. I have passed through the code several times, cleaned up, fixed formatting and typos... There's however one essential addition: option for softfp ABI. Being able to link softfp code with -mfloat-abi=soft, the -mfloat-abi=softfp flag (when selected) is applied only to context.S and vectors.S. All other code compiles with -mfloat-abi=soft thus avoiding potential GCC's "optimizations" - see Note below. Note (RFC): according to http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dai0298a/DAFIFGGE.html if hardware floating point option is selected, GCC may choose to use FPU registers even if there isn't floating point source. Please comment. Having this said I have set following defaults: - Hardware floating point is disabled by default. - When hardware floating point is enabled the default ABI is: - softfp for LAZY and NONE - hard for ALL. Ilija -- Configure bugmail: http://bugs.ecos.sourceware.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
