Based on the change log for the RISC-V privilege 1.13 spec, add the
support for ss1p13.

Ref:https://github.com/riscv/riscv-isa-manual/blob/a7d93c9/src/priv-preface.adoc?plain=1#L40-L72

Lists what to do without clarification or document format.
* Redefined misa.MXL to be read-only, making MXLEN a constant.(Skip, implementation ignored)
* Added the constraint that SXLEN≥UXLEN.(Skip, implementation ignored)
* Defined the misa.V field to reflect that the V extension has been implemented.(Skip, existed)
* Defined the RV32-only medelegh and hedelegh CSRs.(Done in these patches)
* Defined the misaligned atomicity granule PMA, superseding the proposed Zam extension..(Skip, implementation ignored)
* Allocated interrupt 13 for Sscofpmf LCOFI interrupt.(Skip, existed)
* Defined hardware error and software check exception codes.(Done in these patches)
* Specified synchronization requirements when changing the PBMTE fields in menvcfg and henvcfg.(Skip, implementation ignored)
* Incorporated Svade and Svadu extension specifications.(Skip, existed)


Fea.Wang (4):
  target/riscv: Support the version for ss1p13
  target/riscv: Add 'P1P13' bit in SMSTATEEN0
  target/riscv: Add MEDELEGH, HEDELEGH csrs for RV32
  target/riscv: Reserve exception codes for sw-check and hw-err

Jim Shu (1):
  target/riscv: Reuse the conversion function of priv_spec

 target/riscv/cpu.c         |  8 ++++++--
 target/riscv/cpu.h         |  5 ++++-
 target/riscv/cpu_bits.h    |  5 +++++
 target/riscv/cpu_cfg.h     |  1 +
 target/riscv/csr.c         | 39 ++++++++++++++++++++++++++++++++++++++
 target/riscv/tcg/tcg-cpu.c | 17 ++++++++---------
 6 files changed, 63 insertions(+), 12 deletions(-)

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2.34.1