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[PATCH v2 3/3] target/riscv: update mstatus.SD when FS is set dirty
From: |
shihpo . hung |
Subject: |
[PATCH v2 3/3] target/riscv: update mstatus.SD when FS is set dirty |
Date: |
Tue, 14 Jan 2020 02:14:00 -0800 |
remove the check becuase SD bit should summarize FS and XS fields
unconditionally.
Signed-off-by: ShihPo Hung <address@hidden>
---
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