[Qemu-ppc] [PATCH v6 0/2] POWER9 TCG enablements - BCD functions - final part

[Jose Ricardo Ziviani]

v6:
 - improves bcdtrunc/bcdutrunc overflow comparison
 - removes bcds/bcdus/bcdsr applied patches

v5:
 - removes 'unlikely' gcc branch pred. hints from not unlikely places
 - adds comments in host-utils functions
 - adds more test cases for shift functions
 - handles "shift backwards" with signed shifts
 - rebases branch

v4:
 - improves functions to behave exactly like the target

v3:
 - moves shift functions to host-utils.c and added config_int128 guard
 - changes Makefile to always compile host-utils.c
 - redesigns bcd[u]trunc to use bitwise operations
 - removes "target-ppc: Implement bcd_is_valid function" (merged)

v2:
 - bcd[s,sr,us] uses 1 byte for shifting instead of 4 bytes
 - left/right functions in host-utils are out of CONFIG_INT128
 - fixes overflowing issue in left shift and added a testcase

This serie contains 5 new instructions for POWER9 ISA3.0, left/right shifts for 
unsigned quadwords and a small improvement to check whether a bcd value is 
valid or not.

bcdtrunc.: Decimal signed trucate
bcdutrunc.: Decimal unsigned truncate

Jose Ricardo Ziviani (2):
  ppc: Implement bcdtrunc. instruction
  ppc: Implement bcdutrunc. instruction

 target/ppc/helper.h                 |  2 +
 target/ppc/int_helper.c             | 88 +++++++++++++++++++++++++++++++++++++
 target/ppc/translate/vmx-impl.inc.c |  9 ++++
 target/ppc/translate/vmx-ops.inc.c  |  6 +--
 4 files changed, 102 insertions(+), 3 deletions(-)

-- 
2.7.4