On 03/21/14 10:07, Karlsson, Magnus wrote:

Just would like to make sure that a C-program (without inline assembly) compiled today for armv7 will run in AArch32 mode when armv8 boards come out.

The following are obsoleted in ARMv8:

 A32 SWP and SWPB instructions.

 Jazelle (only trivial implementations are supported).

 VFP short vectors and asynchronous bounces.

 /Fast Context Switch Extension (FCSE)/.

None of these are generated for v7-a or indeed earlier by GCC by a C program without inline assembler.

regards Ramana

Thanks: Magnus

*Magnus Karlsson*

Software Development Engineering Manager

LSI Corporation

Box 1024, Knarrarnäsgatan 15

SE-164 21 Kista, Sweden

TEL +46 8 594 607 09

FAX +46 8 594 607 10

CELL +46 73 80 444 88

magnus.karlsson@lsi.com

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