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| author | Xiaojuan Yang <yangxiaojuan@loongson.cn> | 2022-06-06 20:43:19 +0800 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2022-06-06 18:09:03 +0000 |
| commit | f9bf50745f29c85e531857898ed7927b6db7c763 (patch) | |
| tree | 7cbc8cceef002562c51547da9382d6a16dd8a384 /target/loongarch/op_helper.c | |
| parent | d2cba6f7cea9d55aa0567fa8efdeaf2028e1de5e (diff) | |
| download | qemu-f9bf50745f29c85e531857898ed7927b6db7c763.zip qemu-f9bf50745f29c85e531857898ed7927b6db7c763.tar.gz qemu-f9bf50745f29c85e531857898ed7927b6db7c763.tar.bz2 | |
target/loongarch: Add timer related instructions support.
This includes:
-RDTIME{L/H}.W
-RDTIME.D
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220606124333.2060567-30-yangxiaojuan@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target/loongarch/op_helper.c')
| -rw-r--r-- | target/loongarch/op_helper.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/target/loongarch/op_helper.c b/target/loongarch/op_helper.c index a9ba72d..d870498 100644 --- a/target/loongarch/op_helper.c +++ b/target/loongarch/op_helper.c @@ -84,6 +84,19 @@ target_ulong helper_cpucfg(CPULoongArchState *env, target_ulong rj) return rj > 21 ? 0 : env->cpucfg[rj]; } +uint64_t helper_rdtime_d(CPULoongArchState *env) +{ + uint64_t plv; + LoongArchCPU *cpu = env_archcpu(env); + + plv = FIELD_EX64(env->CSR_CRMD, CSR_CRMD, PLV); + if (extract64(env->CSR_MISC, R_CSR_MISC_DRDTL_SHIFT + plv, 1)) { + do_raise_exception(env, EXCCODE_IPE, GETPC()); + } + + return cpu_loongarch_get_constant_timer_counter(cpu); +} + void helper_ertn(CPULoongArchState *env) { uint64_t csr_pplv, csr_pie; |