[PATCH v2 0/4] Prefixed instruction tests to cover negative cases

[Balamuruhan S]

This patchset adds support to test negative scenarios and adds testcase
for paddi with few fixes. It is based on powerpc/next and on top of
Jordan's tests for prefixed instructions patchsets,

https://lists.ozlabs.org/pipermail/linuxppc-dev/2020-May/211394.html
https://lists.ozlabs.org/pipermail/linuxppc-dev/2020-June/211768.html

Changes in v2:
-------------
Fix review comments from Sandipan and Jordan,
* use helper function to print word/prefix instructions
* reuse bits of `flags` to represent negative test scenario
* always set NIP instead of only setting for relative prefixed
  instructions

Balamuruhan S (4):
  powerpc test_emulate_step: enhancement to test negative scenarios
  powerpc test_emulate_step: add negative tests for prefixed addi
  powerpc sstep: introduce macros to retrieve Prefix instruction
    operands
  powerpc test_emulate_step: move extern declaration to sstep.h

 arch/powerpc/include/asm/sstep.h     |  6 ++++
 arch/powerpc/lib/sstep.c             | 12 ++++----
 arch/powerpc/lib/test_emulate_step.c | 42 ++++++++++++++++++++--------
 3 files changed, 43 insertions(+), 17 deletions(-)


base-commit: 64677779e8962c20b580b471790fe42367750599
prerequisite-patch-id: 3fff52f42000e816e2e8b4f75a2bca651dec5efe
prerequisite-patch-id: 5d7904bf38248ec39ed0f6223500286b9eaf82a9
prerequisite-patch-id: 7236d3caa4dc6de6079ae893678223876a3bb364
prerequisite-patch-id: 733e7f9b5c6ade64b8a1c7458b5aefe6b7d6fcff
prerequisite-patch-id: 4793e7716f3f56577a49976539d06db37ba31a80
prerequisite-patch-id: ffb024c2590e7249190b0137acf267e821a816a7
prerequisite-patch-id: 86e64f47de2dc6e9a6e1404de12d7c91775c22c8
prerequisite-patch-id: 9fbe5c3af9590696c230944cdee3c45e01f44d6d
prerequisite-patch-id: 3f9c6238023c867e27d87de26487e7e665a9dc12
-- 
2.24.1