From: David Brenken <david.bren...@efs-auto.de> Hello everyone,
in the scope of this patchset we added implementations for the following instructions for the target TriCore: QSEED, FTOIZ, UTOF For the implementation of the QSEED instruction we wrote a test application to record the QSEED results on the actual target. We recognized that the results of the instruction can be clustered in blocks and do not use all available mantissa bits. After investigating on how to calculate the square root on floats, which can easily be done using shift and add, we implemented it using a 128 entry LUT and finetuned the values to exactly match the hardware results. Furthermore we added a fix for the RRPW_INSERT instruction. Internally we are now using QEMU head and encountered strange issues during execution. Sometimes the PC of the target was set to address 0x0 which was wrong behaviour. A detailed analysis (using valgrind and git bisect) resulted in the fix to reset the ctx variable before generating intermediate code. Best regards David Brenken Andreas Konopik (1): tricore: add QSEED instruction David Brenken (3): tricore: add FTOIZ instruction tricore: add UTOF instruction tricore: fix RRPW_INSERT instruction Georg Hofstetter (1): tricore: reset DisasContext before generating code target/tricore/fpu_helper.c | 129 ++++++++++++++++++++++++++++++++++++ target/tricore/helper.h | 3 + target/tricore/translate.c | 21 +++++- 3 files changed, 150 insertions(+), 3 deletions(-) -- 2.17.1
