[RFC PATCH v2 00/67] Hexagon patch series

[Taylor Simpson]

This series adds support for the Hexagon processor with Linux user support

See patch 02/67 Hexagon README for detailed information.

The patches up to and including "Hexagon build infractructure" implement the
base Hexagon core and the remainder add HVX.  Once the build infrastructure
patch is applied, you can build and qemu will execute non-HVX Hexagon programs.

We have a parallel effort to make the Hexagon Linux toolchain publically
available.


*** Testing ***

The port passes the following tests
    Directed unit tests will contributed when the Hexagon toolchain is available
    MUSL libc test suite (good coverage of Linux system calls)
    https://git.musl-libc.org/cgit/libc-testsuite/
    Internal compiler intrinsics test suite (good coverage of instructions)
    Hexagon machine learning library unit tests
    TODO - pull these from the CAF repo
    make check-tcg TIMEOUT=60

*** Known checkpatch issues ***

The following are known checkpatch errors in the series
    include/disas/dis-asm.h             space prohibited
        (Follow convention of other targets on prior lines)
    target/hexagon/reg_fields.h         Complex macro
    target/hexagon/attribs.h            Complex macro
    target/hexagon/decode.c             Complex macro
    target/hexagon/q6v_decode.c         Macro needs do - while
    target/hexagon/printinsn.c          Macro needs do - while
    target/hexagon/gen_semantics.c      Suspicious ; after while (0)
    target/hexagon/gen_dectree_import.c Complex macro
    target/hexagon/gen_dectree_import.c Suspicious ; after while (0)
    target/hexagon/opcodes.c            Complex macro
    target/hexagon/iclass.h             Complex macro
    scripts/qemu-binfmt-conf.sh         Line over 90 characters
    target/hexagon/mmvec/macros.h       Suspicious ; after while (0)

The following are known checkpatch warnings in the series
    target/hexagon/fma_emu.c            Comments inside macro definition
    scripts/qemu-binfmt-conf.sh         Line over 80 characters

*** Changes in v2 ***
- Use scripts/git.orderfile
- Create a README with the code overview in patch 0001
- Change #define's in hex_regs.h to an enum
- Replace hard coded disassembly buffer length (1028) with #define
- Move Hexagon architecture types patch earlier in series
- Replace #include standard header files with #include "qemu/osdep.h"
- Prefix all header file #ifndef's with HEXAGON_
- Update python version to python3
- #include "tcg/tcg.h" in genptr_helpers.h
- Change target/hexagon/Makefile.objs to support out-of-tree build
- Updated copyright to include year 2020
- Bug fixes
    Fix some problems with HEX_DEBUG output
    Fix bug in circular addressing
- Optimizations to reduce the amount of TCG code generated
    Change pred_written from an array to a bit mask
    Optimize readonly vector registers
    Conditionally call gen_helper_commit_hvx_stores

Taylor Simpson (67):
  Hexagon Maintainers
  Hexagon README
  Hexagon ELF Machine Definition
  Hexagon CPU Scalar Core Definition
  Hexagon register names
  Hexagon Disassembler
  Hexagon CPU Scalar Core Helpers
  Hexagon GDB Stub
  Hexagon architecture types
  Hexagon instruction and packet types
  Hexagon register fields
  Hexagon instruction attributes
  Hexagon register map
  Hexagon instruction/packet decode
  Hexagon instruction printing
  Hexagon arch import - instruction semantics definitions
  Hexagon arch import - macro definitions
  Hexagon arch import - instruction encoding
  Hexagon instruction class definitions
  Hexagon instruction utility functions
  Hexagon generator phase 1 - C preprocessor for semantics
  Hexagon generator phase 2 - qemu_def_generated.h
  Hexagon generator phase 2 - qemu_wrap_generated.h
  Hexagon generator phase 2 - opcodes_def_generated.h
  Hexagon generator phase 2 - op_attribs_generated.h
  Hexagon generator phase 2 - op_regs_generated.h
  Hexagon generator phase 2 - printinsn-generated.h
  Hexagon generator phase 3 - C preprocessor for decode tree
  Hexagon generater phase 4 - Decode tree
  Hexagon opcode data structures
  Hexagon macros to interface with the generator
  Hexagon macros referenced in instruction semantics
  Hexagon instruction classes
  Hexagon TCG generation helpers - step 1
  Hexagon TCG generation helpers - step 2
  Hexagon TCG generation helpers - step 3
  Hexagon TCG generation helpers - step 4
  Hexagon TCG generation helpers - step 5
  Hexagon TCG generation - step 01
  Hexagon TCG generation - step 02
  Hexagon TCG generation - step 03
  Hexagon TCG generation - step 04
  Hexagon TCG generation - step 05
  Hexagon TCG generation - step 06
  Hexagon TCG generation - step 07
  Hexagon TCG generation - step 08
  Hexagon TCG generation - step 09
  Hexagon TCG generation - step 10
  Hexagon TCG generation - step 11
  Hexagon TCG generation - step 12
  Hexagon translation
  Hexagon Linux user emulation
  Hexagon build infrastructure
  Hexagon - Add Hexagon Vector eXtensions (HVX) to core definition
  Hexagon HVX support in gdbstub
  Hexagon HVX import instruction encodings
  Hexagon HVX import semantics
  Hexagon HVX import macro definitions
  Hexagon HVX semantics generator
  Hexagon HVX instruction decoding
  Hexagon HVX instruction utility functions
  Hexagon HVX macros to interface with the generator
  Hexagon HVX macros referenced in instruction semantics
  Hexagon HVX helper to commit vector stores (masked and scatter/gather)
  Hexagon HVX TCG generation
  Hexagon HVX translation
  Hexagon HVX build infrastructure

 configure                                    |    9 +
 default-configs/hexagon-linux-user.mak       |    1 +
 include/disas/dis-asm.h                      |    1 +
 include/elf.h                                |    2 +
 linux-user/hexagon/sockbits.h                |   18 +
 linux-user/hexagon/syscall_nr.h              |  346 +++
 linux-user/hexagon/target_cpu.h              |   44 +
 linux-user/hexagon/target_elf.h              |   38 +
 linux-user/hexagon/target_fcntl.h            |   18 +
 linux-user/hexagon/target_signal.h           |   34 +
 linux-user/hexagon/target_structs.h          |   46 +
 linux-user/hexagon/target_syscall.h          |   32 +
 linux-user/hexagon/termbits.h                |   18 +
 linux-user/syscall_defs.h                    |   33 +
 target/hexagon/arch.h                        |   62 +
 target/hexagon/attribs.h                     |   32 +
 target/hexagon/attribs_def.h                 |  404 +++
 target/hexagon/conv_emu.h                    |   50 +
 target/hexagon/cpu-param.h                   |   26 +
 target/hexagon/cpu.h                         |  207 ++
 target/hexagon/cpu_bits.h                    |   37 +
 target/hexagon/decode.h                      |   39 +
 target/hexagon/fma_emu.h                     |   30 +
 target/hexagon/genptr.h                      |   25 +
 target/hexagon/genptr_helpers.h              | 1049 +++++++
 target/hexagon/helper.h                      |   38 +
 target/hexagon/helper_overrides.h            | 1850 ++++++++++++
 target/hexagon/hex_arch_types.h              |   42 +
 target/hexagon/hex_regs.h                    |   99 +
 target/hexagon/iclass.h                      |   46 +
 target/hexagon/insn.h                        |  149 +
 target/hexagon/internal.h                    |   54 +
 target/hexagon/macros.h                      | 1474 ++++++++++
 target/hexagon/mmvec/decode_ext_mmvec.h      |   24 +
 target/hexagon/mmvec/macros.h                |  698 +++++
 target/hexagon/mmvec/mmvec.h                 |   87 +
 target/hexagon/mmvec/system_ext_mmvec.h      |   38 +
 target/hexagon/opcodes.h                     |   67 +
 target/hexagon/printinsn.h                   |   26 +
 target/hexagon/reg_fields.h                  |   40 +
 target/hexagon/reg_fields_def.h              |  109 +
 target/hexagon/regmap.h                      |   38 +
 target/hexagon/translate.h                   |  112 +
 disas/hexagon.c                              |   62 +
 linux-user/elfload.c                         |   16 +
 linux-user/hexagon/cpu_loop.c                |  173 ++
 linux-user/hexagon/signal.c                  |  276 ++
 linux-user/syscall.c                         |    2 +
 target/hexagon/arch.c                        |  663 +++++
 target/hexagon/conv_emu.c                    |  369 +++
 target/hexagon/cpu.c                         |  374 +++
 target/hexagon/decode.c                      |  788 +++++
 target/hexagon/fma_emu.c                     |  916 ++++++
 target/hexagon/gdbstub.c                     |  111 +
 target/hexagon/gen_dectree_import.c          |  205 ++
 target/hexagon/gen_semantics.c               |  101 +
 target/hexagon/genptr.c                      |   61 +
 target/hexagon/iclass.c                      |  107 +
 target/hexagon/mmvec/decode_ext_mmvec.c      |  670 +++++
 target/hexagon/mmvec/system_ext_mmvec.c      |  263 ++
 target/hexagon/op_helper.c                   |  509 ++++
 target/hexagon/opcodes.c                     |  217 ++
 target/hexagon/printinsn.c                   |   91 +
 target/hexagon/q6v_decode.c                  |  416 +++
 target/hexagon/reg_fields.c                  |   28 +
 target/hexagon/translate.c                   |  916 ++++++
 MAINTAINERS                                  |    8 +
 disas/Makefile.objs                          |    1 +
 scripts/qemu-binfmt-conf.sh                  |    6 +-
 target/hexagon/Makefile.objs                 |  127 +
 target/hexagon/README                        |  296 ++
 target/hexagon/dectree.py                    |  353 +++
 target/hexagon/do_qemu.py                    | 1194 ++++++++
 target/hexagon/imported/allext.idef          |   25 +
 target/hexagon/imported/allext_macros.def    |   25 +
 target/hexagon/imported/allextenc.def        |   20 +
 target/hexagon/imported/allidefs.def         |   92 +
 target/hexagon/imported/alu.idef             | 1335 +++++++++
 target/hexagon/imported/branch.idef          |  344 +++
 target/hexagon/imported/compare.idef         |  639 +++++
 target/hexagon/imported/encode.def           |  126 +
 target/hexagon/imported/encode_pp.def        | 2283 +++++++++++++++
 target/hexagon/imported/encode_subinsn.def   |  150 +
 target/hexagon/imported/float.idef           |  498 ++++
 target/hexagon/imported/iclass.def           |   52 +
 target/hexagon/imported/ldst.idef            |  421 +++
 target/hexagon/imported/macros.def           | 3970 ++++++++++++++++++++++++++
 target/hexagon/imported/mmvec/encode_ext.def |  830 ++++++
 target/hexagon/imported/mmvec/ext.idef       | 2780 ++++++++++++++++++
 target/hexagon/imported/mmvec/macros.def     | 1110 +++++++
 target/hexagon/imported/mpy.idef             | 1269 ++++++++
 target/hexagon/imported/shift.idef           | 1211 ++++++++
 target/hexagon/imported/subinsns.idef        |  152 +
 target/hexagon/imported/system.idef          |  302 ++
 tests/tcg/configure.sh                       |    4 +-
 tests/tcg/hexagon/float_convs.ref            |  748 +++++
 tests/tcg/hexagon/float_madds.ref            |  768 +++++
 97 files changed, 36063 insertions(+), 2 deletions(-)
 create mode 100644 default-configs/hexagon-linux-user.mak
 create mode 100644 linux-user/hexagon/sockbits.h
 create mode 100644 linux-user/hexagon/syscall_nr.h
 create mode 100644 linux-user/hexagon/target_cpu.h
 create mode 100644 linux-user/hexagon/target_elf.h
 create mode 100644 linux-user/hexagon/target_fcntl.h
 create mode 100644 linux-user/hexagon/target_signal.h
 create mode 100644 linux-user/hexagon/target_structs.h
 create mode 100644 linux-user/hexagon/target_syscall.h
 create mode 100644 linux-user/hexagon/termbits.h
 create mode 100644 target/hexagon/arch.h
 create mode 100644 target/hexagon/attribs.h
 create mode 100644 target/hexagon/attribs_def.h
 create mode 100644 target/hexagon/conv_emu.h
 create mode 100644 target/hexagon/cpu-param.h
 create mode 100644 target/hexagon/cpu.h
 create mode 100644 target/hexagon/cpu_bits.h
 create mode 100644 target/hexagon/decode.h
 create mode 100644 target/hexagon/fma_emu.h
 create mode 100644 target/hexagon/genptr.h
 create mode 100644 target/hexagon/genptr_helpers.h
 create mode 100644 target/hexagon/helper.h
 create mode 100644 target/hexagon/helper_overrides.h
 create mode 100644 target/hexagon/hex_arch_types.h
 create mode 100644 target/hexagon/hex_regs.h
 create mode 100644 target/hexagon/iclass.h
 create mode 100644 target/hexagon/insn.h
 create mode 100644 target/hexagon/internal.h
 create mode 100644 target/hexagon/macros.h
 create mode 100644 target/hexagon/mmvec/decode_ext_mmvec.h
 create mode 100644 target/hexagon/mmvec/macros.h
 create mode 100644 target/hexagon/mmvec/mmvec.h
 create mode 100644 target/hexagon/mmvec/system_ext_mmvec.h
 create mode 100644 target/hexagon/opcodes.h
 create mode 100644 target/hexagon/printinsn.h
 create mode 100644 target/hexagon/reg_fields.h
 create mode 100644 target/hexagon/reg_fields_def.h
 create mode 100644 target/hexagon/regmap.h
 create mode 100644 target/hexagon/translate.h
 create mode 100644 disas/hexagon.c
 create mode 100644 linux-user/hexagon/cpu_loop.c
 create mode 100644 linux-user/hexagon/signal.c
 create mode 100644 target/hexagon/arch.c
 create mode 100644 target/hexagon/conv_emu.c
 create mode 100644 target/hexagon/cpu.c
 create mode 100644 target/hexagon/decode.c
 create mode 100644 target/hexagon/fma_emu.c
 create mode 100644 target/hexagon/gdbstub.c
 create mode 100644 target/hexagon/gen_dectree_import.c
 create mode 100644 target/hexagon/gen_semantics.c
 create mode 100644 target/hexagon/genptr.c
 create mode 100644 target/hexagon/iclass.c
 create mode 100644 target/hexagon/mmvec/decode_ext_mmvec.c
 create mode 100644 target/hexagon/mmvec/system_ext_mmvec.c
 create mode 100644 target/hexagon/op_helper.c
 create mode 100644 target/hexagon/opcodes.c
 create mode 100644 target/hexagon/printinsn.c
 create mode 100644 target/hexagon/q6v_decode.c
 create mode 100644 target/hexagon/reg_fields.c
 create mode 100644 target/hexagon/translate.c
 create mode 100644 target/hexagon/Makefile.objs
 create mode 100644 target/hexagon/README
 create mode 100755 target/hexagon/dectree.py
 create mode 100755 target/hexagon/do_qemu.py
 create mode 100644 target/hexagon/imported/allext.idef
 create mode 100644 target/hexagon/imported/allext_macros.def
 create mode 100644 target/hexagon/imported/allextenc.def
 create mode 100644 target/hexagon/imported/allidefs.def
 create mode 100644 target/hexagon/imported/alu.idef
 create mode 100644 target/hexagon/imported/branch.idef
 create mode 100644 target/hexagon/imported/compare.idef
 create mode 100644 target/hexagon/imported/encode.def
 create mode 100644 target/hexagon/imported/encode_pp.def
 create mode 100644 target/hexagon/imported/encode_subinsn.def
 create mode 100644 target/hexagon/imported/float.idef
 create mode 100644 target/hexagon/imported/iclass.def
 create mode 100644 target/hexagon/imported/ldst.idef
 create mode 100755 target/hexagon/imported/macros.def
 create mode 100644 target/hexagon/imported/mmvec/encode_ext.def
 create mode 100644 target/hexagon/imported/mmvec/ext.idef
 create mode 100755 target/hexagon/imported/mmvec/macros.def
 create mode 100644 target/hexagon/imported/mpy.idef
 create mode 100644 target/hexagon/imported/shift.idef
 create mode 100644 target/hexagon/imported/subinsns.idef
 create mode 100644 target/hexagon/imported/system.idef
 create mode 100644 tests/tcg/hexagon/float_convs.ref
 create mode 100644 tests/tcg/hexagon/float_madds.ref

-- 
2.7.4