[Qemu-devel] [PATCH 0/4] disas: add libvixl to support A64 disassembly

[Peter Maydell]

Hi. This is a rebased and mildly cleaned up version of Claudio's
RFC patchset from last year to add libvixl to QEMU and use it
for A64 disassembly.

NOTE NOTE NOTE
 * we now link with g++, not gcc (even if the target doesn't
   happen to need the A64 disassembler, since it's a bit hard
   to tell whether there's a C++-source .o file in the link)
 * I've tested Linux (including static link of linux-user) and
   MacOS hosts, but not Windows
 * if you have a visceral dislike of the idea of C++ in the
   QEMU binary now would be a good time to say OMG WTF BBQ

Changes since the RFC:
 * some support for C++ compilation is already in master, so
   the rules.mak changes are smaller and simpler
 * I've fixed the output to better fit in a qemu debug log trace
 * I simplified the interface between aarch64-cxx.cc and aarch64.c
   a little bit
 * correctly handle the "no C++ compiler, so no A64 disassembler"
   build case
 * added support for using this as a disassembler for A64 targets
   as well as hosts

This patchset sits on top of target-arm.next.
You can find a git tree here:
 git://git.linaro.org/people/peter.maydell/qemu-arm.git a64-vixl
web UI:
 
https://git.linaro.org/people/peter.maydell/qemu-arm.git/shortlog/refs/heads/a64-vixl

Sample output:

IN: _dl_start
0x0000004000805304:  d11183ff   sub sp, sp, #0x460 (1120)
0x0000004000805308:  a9ba7bfd   stp x29, x30, [sp, #-96]!
0x000000400080530c:  910003fd   mov x29, sp
0x0000004000805310:  a90363f7   stp x23, x24, [sp, #48]
0x0000004000805314:  a90153f3   stp x19, x20, [sp, #16]
0x0000004000805318:  a9025bf5   stp x21, x22, [sp, #32]
0x000000400080531c:  a9046bf9   stp x25, x26, [sp, #64]
0x0000004000805320:  f9002bfb   str x27, [sp, #80]
0x0000004000805324:  aa0003f7   mov x23, x0
0x0000004000805328:  910263a1   add x1, x29, #0x98 (152)
0x000000400080532c:  910be3a2   add x2, x29, #0x2f8 (760)
0x0000004000805330:  f8008c3f   str xzr, [x1, #8]!
0x0000004000805334:  eb02003f   cmp x1, x2
0x0000004000805338:  54ffffc1   b.ne #-0x8


Claudio Fontana (2):
  disas: add libvixl source code for AArch64 A64 disassembler
  disas: Implement disassembly output for A64

Peter Maydell (2):
  rules.mak: Support .cc as a C++ source file suffix
  rules.mak: Link with C++ if we have a C++ compiler

 configure                                    |    4 +
 disas.c                                      |   14 +-
 disas/Makefile.objs                          |    7 +
 disas/aarch64-cxx.cc                         |   80 +
 disas/aarch64.c                              |   39 +
 disas/libvixl/LICENCE                        |   30 +
 disas/libvixl/Makefile.objs                  |    6 +
 disas/libvixl/README.md                      |  128 ++
 disas/libvixl/doc/changelog.md               |   12 +
 disas/libvixl/doc/supported-instructions.md  | 1133 ++++++++++++++
 disas/libvixl/src/a64/assembler-a64.cc       | 2172 ++++++++++++++++++++++++++
 disas/libvixl/src/a64/assembler-a64.h        | 1784 +++++++++++++++++++++
 disas/libvixl/src/a64/constants-a64.h        | 1104 +++++++++++++
 disas/libvixl/src/a64/cpu-a64.cc             |  148 ++
 disas/libvixl/src/a64/cpu-a64.h              |   56 +
 disas/libvixl/src/a64/debugger-a64.cc        | 1511 ++++++++++++++++++
 disas/libvixl/src/a64/debugger-a64.h         |  188 +++
 disas/libvixl/src/a64/decoder-a64.cc         |  712 +++++++++
 disas/libvixl/src/a64/decoder-a64.h          |  198 +++
 disas/libvixl/src/a64/disasm-a64.cc          | 1678 ++++++++++++++++++++
 disas/libvixl/src/a64/disasm-a64.h           |  109 ++
 disas/libvixl/src/a64/instructions-a64.cc    |  238 +++
 disas/libvixl/src/a64/instructions-a64.h     |  344 ++++
 disas/libvixl/src/a64/instrument-a64.cc      |  638 ++++++++
 disas/libvixl/src/a64/instrument-a64.h       |  108 ++
 disas/libvixl/src/a64/macro-assembler-a64.cc | 1108 +++++++++++++
 disas/libvixl/src/a64/macro-assembler-a64.h  | 1175 ++++++++++++++
 disas/libvixl/src/a64/simulator-a64.cc       | 2077 ++++++++++++++++++++++++
 disas/libvixl/src/a64/simulator-a64.h        |  576 +++++++
 disas/libvixl/src/globals.h                  |   66 +
 disas/libvixl/src/platform.h                 |   43 +
 disas/libvixl/src/utils.cc                   |  120 ++
 disas/libvixl/src/utils.h                    |  126 ++
 include/disas/bfd.h                          |    1 +
 rules.mak                                    |   14 +-
 target-arm/translate-a64.c                   |    2 +-
 36 files changed, 17743 insertions(+), 6 deletions(-)
 create mode 100644 disas/aarch64-cxx.cc
 create mode 100644 disas/aarch64.c
 create mode 100644 disas/libvixl/LICENCE
 create mode 100644 disas/libvixl/Makefile.objs
 create mode 100644 disas/libvixl/README.md
 create mode 100644 disas/libvixl/doc/changelog.md
 create mode 100644 disas/libvixl/doc/supported-instructions.md
 create mode 100644 disas/libvixl/src/a64/assembler-a64.cc
 create mode 100644 disas/libvixl/src/a64/assembler-a64.h
 create mode 100644 disas/libvixl/src/a64/constants-a64.h
 create mode 100644 disas/libvixl/src/a64/cpu-a64.cc
 create mode 100644 disas/libvixl/src/a64/cpu-a64.h
 create mode 100644 disas/libvixl/src/a64/debugger-a64.cc
 create mode 100644 disas/libvixl/src/a64/debugger-a64.h
 create mode 100644 disas/libvixl/src/a64/decoder-a64.cc
 create mode 100644 disas/libvixl/src/a64/decoder-a64.h
 create mode 100644 disas/libvixl/src/a64/disasm-a64.cc
 create mode 100644 disas/libvixl/src/a64/disasm-a64.h
 create mode 100644 disas/libvixl/src/a64/instructions-a64.cc
 create mode 100644 disas/libvixl/src/a64/instructions-a64.h
 create mode 100644 disas/libvixl/src/a64/instrument-a64.cc
 create mode 100644 disas/libvixl/src/a64/instrument-a64.h
 create mode 100644 disas/libvixl/src/a64/macro-assembler-a64.cc
 create mode 100644 disas/libvixl/src/a64/macro-assembler-a64.h
 create mode 100644 disas/libvixl/src/a64/simulator-a64.cc
 create mode 100644 disas/libvixl/src/a64/simulator-a64.h
 create mode 100644 disas/libvixl/src/globals.h
 create mode 100644 disas/libvixl/src/platform.h
 create mode 100644 disas/libvixl/src/utils.cc
 create mode 100644 disas/libvixl/src/utils.h

-- 
1.8.5