From: ShihPo Hung Date: Tue, 14 Jan 2020 22:17:33 -0800 Subject: [PATCH] target/riscv: update mstatus.SD when FS is set dirty remove the check becuase SD bit should summarize FS and XS fields unconditionally. Signed-off-by: ShihPo Hung Reviewed-by: Richard Henderson Reviewed-by: Alistair Francis Signed-off-by: Palmer Dabbelt --- target/riscv/csr.c | 3 +-- target/riscv/translate.c | 2 +- 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/target/riscv/csr.c b/target/riscv/csr.c index da02f9f0b1..0e34c292c5 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -341,8 +341,7 @@ static int write_mstatus(CPURISCVState *env, int csrno, target_ulong val) mstatus = (mstatus & ~mask) | (val & mask); - dirty = (riscv_cpu_fp_enabled(env) && - ((mstatus & MSTATUS_FS) == MSTATUS_FS)) | + dirty = ((mstatus & MSTATUS_FS) == MSTATUS_FS) | ((mstatus & MSTATUS_XS) == MSTATUS_XS); mstatus = set_field(mstatus, MSTATUS_SD, dirty); env->mstatus = mstatus; diff --git a/target/riscv/translate.c b/target/riscv/translate.c index ab6a891dc3..8e40ed3ac4 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -394,7 +394,7 @@ static void mark_fs_dirty(DisasContext *ctx) tmp = tcg_temp_new(); tcg_gen_ld_tl(tmp, cpu_env, offsetof(CPURISCVState, mstatus)); - tcg_gen_ori_tl(tmp, tmp, MSTATUS_FS); + tcg_gen_ori_tl(tmp, tmp, MSTATUS_FS | MSTATUS_SD); tcg_gen_st_tl(tmp, cpu_env, offsetof(CPURISCVState, mstatus)); tcg_temp_free(tmp); }