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| author | Nikita Shubin <n.shubin@yadro.com> | 2023-08-08 12:09:14 +0300 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2023-09-11 11:45:55 +1000 |
| commit | e7a03409f29e2da59297d55afbaec98c96e43e3a (patch) | |
| tree | 78cb871dd9b09ce2a3333deae689718dfd2fd808 /scripts | |
| parent | 4df282335b3b13db30123fbcca050e4bf690a9d9 (diff) | |
| download | qemu-e7a03409f29e2da59297d55afbaec98c96e43e3a.zip qemu-e7a03409f29e2da59297d55afbaec98c96e43e3a.tar.gz qemu-e7a03409f29e2da59297d55afbaec98c96e43e3a.tar.bz2 | |
target/riscv: don't read CSR in riscv_csrrw_do64
As per ISA:
"For CSRRWI, if rd=x0, then the instruction shall not read the CSR and
shall not cause any of the side effects that might occur on a CSR read."
trans_csrrwi() and trans_csrrw() call do_csrw() if rd=x0, do_csrw() calls
riscv_csrrw_do64(), via helper_csrw() passing NULL as *ret_value.
Signed-off-by: Nikita Shubin <n.shubin@yadro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20230808090914.17634-1-nikita.shubin@maquefel.me>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions