[PATCH v8 00/17] riscv support for control flow integrity extensions

[Deepak Gupta <debug@rivosinc.com>]

v8 for riscv zicfilp and zicfiss extensions support in qemu.

Links for previous versions
[1] - v1 https://lists.nongnu.org/archive/html/qemu-devel/2024-07/msg06017.html
[2] - v2 https://lore.kernel.org/all/ed23bcbc-fdc4-4492-803c-daa95880375a@linaro.org/T/
[3] - v3 https://lists.nongnu.org/archive/html/qemu-devel/2024-08/msg01005.html
[4] - v4 https://lore.kernel.org/all/20240816010711.3055425-6-debug@rivosinc.com/T/
[5] - v5 https://lore.kernel.org/all/20240820000129.3522346-1-debug@rivosinc.com/T/#m7b9cc847e739ec86f9569a3ca9f3d9377b01e21
[6] - v6 https://mail.gnu.org/archive/html/qemu-riscv/2024-08/msg00418.html

---
v8:
   - fixed up `gen_cmpxchg` to store extra word2 during compile to raise storeAMO always
v7:
   - Updated decode_save_opc to take extra argument of excp_uw2 and
     updated callsites
   - added a helper for promoting load faults to store faults
   - Removed stale comments and edited existed comments

Deepak Gupta (17):
  target/riscv: Add zicfilp extension
  target/riscv: Introduce elp state and enabling controls for zicfilp
  target/riscv: save and restore elp state on priv transitions
  target/riscv: additional code information for sw check
  target/riscv: tracking indirect branches (fcfi) for zicfilp
  target/riscv: zicfilp `lpad` impl and branch tracking
  disas/riscv: enable `lpad` disassembly
  target/riscv: Add zicfiss extension
  target/riscv: introduce ssp and enabling controls for zicfiss
  target/riscv: tb flag for shadow stack  instructions
  target/riscv: mmu changes for zicfiss shadow stack protection
  target/riscv: AMO operations always raise store/AMO fault
  target/riscv: update `decode_save_opc` to store extra word2
  target/riscv: implement zicfiss instructions
  target/riscv: compressed encodings for sspush and sspopchk
  disas/riscv: enable disassembly for zicfiss instructions
  disas/riscv: enable disassembly for compressed sspush/sspopchk

 disas/riscv.c                                 |  77 ++++++++-
 disas/riscv.h                                 |   4 +
 target/riscv/cpu.c                            |  17 ++
 target/riscv/cpu.h                            |  24 ++-
 target/riscv/cpu_bits.h                       |  17 ++
 target/riscv/cpu_cfg.h                        |   2 +
 target/riscv/cpu_helper.c                     | 153 +++++++++++++++++-
 target/riscv/cpu_user.h                       |   1 +
 target/riscv/csr.c                            |  84 ++++++++++
 target/riscv/insn16.decode                    |   4 +
 target/riscv/insn32.decode                    |  26 ++-
 .../riscv/insn_trans/trans_privileged.c.inc   |   8 +-
 target/riscv/insn_trans/trans_rva.c.inc       |  43 ++++-
 target/riscv/insn_trans/trans_rvd.c.inc       |   4 +-
 target/riscv/insn_trans/trans_rvf.c.inc       |   4 +-
 target/riscv/insn_trans/trans_rvh.c.inc       |   8 +-
 target/riscv/insn_trans/trans_rvi.c.inc       |  61 ++++++-
 target/riscv/insn_trans/trans_rvvk.c.inc      |  10 +-
 target/riscv/insn_trans/trans_rvzacas.c.inc   |   4 +-
 target/riscv/insn_trans/trans_rvzfh.c.inc     |   4 +-
 target/riscv/insn_trans/trans_rvzicfiss.c.inc |  75 +++++++++
 target/riscv/insn_trans/trans_svinval.c.inc   |   6 +-
 target/riscv/internals.h                      |   3 +
 target/riscv/machine.c                        |  38 +++++
 target/riscv/op_helper.c                      |  18 +++
 target/riscv/pmp.c                            |   5 +
 target/riscv/pmp.h                            |   3 +-
 target/riscv/tcg/tcg-cpu.c                    |  25 +++
 target/riscv/translate.c                      |  45 +++++-
 29 files changed, 724 insertions(+), 49 deletions(-)
 create mode 100644 target/riscv/insn_trans/trans_rvzicfiss.c.inc

-- 
2.44.0