Currently, all versions of Hexagon CPU are treated the same, and all
opcodes are able to run on any version.  This series changes the behavior
such that only the opcodes available on the currently executing Hexagon
CPU version can execute.

Changes include:
Mark which Hexagon CPU version is currently executing
Check that each opcode is supported in the Hexagon CPU version
If not, raise SIGILL
Properly handle disassembly (-d in_asm)
Test case added

Note that this series borrows elements from Brian Cain's "Handle some
invalid encodings" series.  Therefore, it will need slight rework after
those patches are merged.

Co-authored-by: Matheus Tavares Bernardino <matheus.bernardino@oss.qualcomm.com>
Co-authored-by: Brian Cain <brian.cain@oss.qualcomm.com>

Changes in v2:
- Rebase with Brian Cain's "Handle some invalid encodings" series
- Add older opcodes to tag_rev_info.c.inc
- Change tag_rev_info to use HexagonVersion
      Suggested by Richard Henderson <richard.henderson@linaro.org>
- Disassembly includes valid opcodes inside packet with invalid opcodes
- Remove unused function - snpring_a_pkt_debug


Brian Cain (1):
  tests/tcg/hexagon: Add test for revision-gated instruction decoding

Matheus Tavares Bernardino (1):
  Hexagon (target/hexagon) Introduce tag_rev_info.c.inc

Taylor Simpson (6):
  Hexagon (target/hexagon) Properly handle Hexagon CPU version
  Hexagon (linux-user/hexagon) Identify Hexagon version in ELF file
  Hexagon (target/hexagon) Add Hexagon version field to DisasContext
  Hexagon (target/hexagon) Check each opcode against current CPU version
  Hexagon (target/hexagon) Disassembly of invalid packets
  Hexagon (target/hexagon) Remove snprint_a_pkt_debug

 target/hexagon/cpu-qom.h             |  23 +
 target/hexagon/cpu.h                 |   2 +
 target/hexagon/cpu_bits.h            |   4 +-
 target/hexagon/decode.h              |   2 +
 target/hexagon/printinsn.h           |   4 +-
 target/hexagon/translate.h           |   1 +
 disas/hexagon.c                      |   3 +-
 linux-user/hexagon/elfload.c         |  43 +-
 target/hexagon/cpu.c                 |  31 +-
 target/hexagon/decode.c              |  48 ++-
 target/hexagon/printinsn.c           |  40 +-
 target/hexagon/translate.c           |   1 +
 tests/tcg/hexagon/check_rev_gating.c | 141 ++++++
 target/hexagon/tag_rev_info.c.inc    | 613 +++++++++++++++++++++++++++
 tests/tcg/hexagon/Makefile.target    |   6 +
 15 files changed, 898 insertions(+), 64 deletions(-)
 create mode 100644 tests/tcg/hexagon/check_rev_gating.c
 create mode 100644 target/hexagon/tag_rev_info.c.inc

-- 
2.43.0