This patchset implements RISC-V Zc* extension v1.0.0.RC5.6 version instructions.
Specification:
https://github.com/riscv/riscv-code-size-reduction/tree/main/Zc-specification
The port is available here:
https://github.com/plctlab/plct-qemu/tree/plct-zce-upstream
To test Zc* implementation, specify cpu argument with 'x-zca=true,x-zcb=true,x-zcf=true" and "x-zcd=true" (or "x-zcmp=true,x-zcmt=true") to enable Zca/Zcb/Zcf and Zcd(or Zcmp,Zcmt) extension support.
This implementation can pass the basic zc tests from https://github.com/yulong-plct/zc-test
Weiwei Li (8):
target/riscv: add cfg properties for Zc* extension
target/riscv: add support for Zca, Zcf and Zcd extension
target/riscv: add support for Zcb extension
target/riscv: add support for Zcmp extension
target/riscv: add support for Zcmt extension
target/riscv: delete redundant check for zcd instructions in
decode_opc
target/riscv: expose properties for Zc* extension
disas/riscv.c: add disasm support for Zc*
disas/riscv.c | 287 +++++++++++++++++++++-
target/riscv/cpu.c | 37 +++
target/riscv/cpu.h | 8 +
target/riscv/cpu_bits.h | 6 +
target/riscv/csr.c | 28 +++
target/riscv/helper.h | 7 +
target/riscv/insn16.decode | 52 +++-
target/riscv/insn_trans/trans_rvi.c.inc | 5 +-
target/riscv/insn_trans/trans_rvzce.c.inc | 279 +++++++++++++++++++++
target/riscv/machine.c | 19 ++
target/riscv/meson.build | 3 +-
target/riscv/translate.c | 25 +-
target/riscv/zce_helper.c | 244 ++++++++++++++++++
13 files changed, 990 insertions(+), 10 deletions(-)
create mode 100644 target/riscv/insn_trans/trans_rvzce.c.inc
create mode 100644 target/riscv/zce_helper.c
--
2.25.1