[PATCH v2 3/3] target/riscv: update mstatus.SD when FS is set dirty

[shihpo.hung@sifive.com]

remove the check becuase SD bit should summarize FS and XS fields
unconditionally.

Signed-off-by: ShihPo Hung <shihpo.hung@sifive.com>
---
 target/riscv/csr.c       | 3 +--
 target/riscv/translate.c | 1 +
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index da02f9f..0e34c29 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 ab6a891..e825ee6 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -395,6 +395,7 @@ 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_SD);
     tcg_gen_st_tl(tmp, cpu_env, offsetof(CPURISCVState, mstatus));
     tcg_temp_free(tmp);
 }
-- 
2.7.4