[Qemu-devel] [PATCH v5 0/7] POWER9 TCG enablements - BCD functions - final part

[Jose Ricardo Ziviani]

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.

bcds.: Decimal signed shift
bcdus.: Decimal unsigned shift
bcdsr.: Decimal shift and round
bcdtrunc.: Decimal signed trucate
bcdutrunc.: Decimal unsigned truncate

Jose Ricardo Ziviani (7):
  host-utils: Move 128-bit guard macro to .c file
  host-utils: Implement unsigned quadword left/right shift and unit
    tests
  ppc: Implement bcds. instruction
  ppc: Implement bcdus. instruction
  ppc: Implement bcdsr. instruction
  ppc: Implement bcdtrunc. instruction
  ppc: Implement bcdutrunc. instruction

 include/qemu/host-utils.h           |  27 +++++
 target/ppc/helper.h                 |   5 +
 target/ppc/int_helper.c             | 217 ++++++++++++++++++++++++++++++++++++
 target/ppc/translate/vmx-impl.inc.c |  16 +++
 target/ppc/translate/vmx-ops.inc.c  |  13 ++-
 tests/Makefile.include              |   5 +-
 tests/test-shift128.c               | 139 +++++++++++++++++++++++
 util/Makefile.objs                  |   2 +-
 util/host-utils.c                   |  66 +++++++++++
 9 files changed, 483 insertions(+), 7 deletions(-)
 create mode 100644 tests/test-shift128.c

-- 
2.7.4