This series contains implentation of CA32 and OV32 bits added to the ISA 3.0. Various fixed-point arithmetic instructions are updated to take care of the newer flags.
Finally the last patch adds new instruction mcrxrx, that helps reading the carry (CA and CA32) and the overflow (OV and OV32) flags Changelog: v4: * Get back to the v3 implementation. Dropped removal of split out variables. * Remove checking of isa300 on the write side. Read side will do the checking. v3: * Get rid of cpu_ca, cpu_ov, cpu_so split out variables * As most of the patches under went changes, dropped the reviewed-bys(except neg[.] patch) v2: * Add missing condition in narrow mode(add/subf), multiply and divide * Drop nego patch, subf implementation is sufficient for setting OV and OV32 * Retaining neg[.], as the code is simplified. * Fix OV resetting in compute_ov() v1: * Use these ISA 3.0 flag to enable CA32 and OV32 * Re-write ca32 compute routine * Add setting of flags for "neg." and "nego." Nikunj A Dadhania (8): target/ppc: support for 32-bit carry and overflow target/ppc: update ca32 in arithmetic add target/ppc: update ca32 in arithmetic substract target/ppc: update overflow flags for add/sub target/ppc: use tcg ops for neg instruction target/ppc: add ov32 flag for multiply low insns target/ppc: add ov32 flag in divide operations target/ppc: add mcrxrx instruction target/ppc/cpu.c | 13 +++++- target/ppc/cpu.h | 7 +++ target/ppc/int_helper.c | 53 +++++++++------------- target/ppc/translate.c | 106 ++++++++++++++++++++++++++++++++++++++++---- target/ppc/translate_init.c | 2 +- 5 files changed, 138 insertions(+), 43 deletions(-) -- 2.7.4
