Hi Sergei Sergei Gavrikov wrote:
> I tried to build and run "thumb" tests for NXP ARM7TDMI (LPC2294) using > corresponding RedBoot/GDB > > ecos-v3_0-branchpoint GCC 4.3.2 most of tests failed > ecos AnonCVS GCC 4.3.2 most of tests failed > ecos AnonCVS GCC 4.6.2 most of tests failed > ecos AnonCVS GCC 4.6.3 most of tests failed > > Thus, it looks like that GCC 4.6.2 is not point of those fails. > > BTW, I never tried ro run "thumb" blobs before on my target and maybe > I should turn on/off more CDL options than just to force CYGHWR_THUMB > option. Enabling CYGHWR_THUMB should be sufficient. Be sure to "make clean" when switching to Thumb. Also, check that the -mthumb and -mthumb-interwork flags are definitely present during the building of your eCos tests. > So, I agree with the said "Thumb support looks broken" at the least for > lpc2xxx, lpc24xx variants, but, it seems to me it was broken even before > eCos 3.0. I have just verified that the kernel tm_basic test builds for target eb40a (ARM7) with RAM startup and CYGHWR_THUMB. The resulting binary runs under debug (via RedBoot) without problem. This is using the new eCos 4.6.2-20120125 test release toolchain. There could be a Thumb-related issue within a certain variant/platform HAL or device driver package. John Dallaway eCos maintainer http://www.dallaway.org.uk/john
