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