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| author | Richard Henderson <richard.henderson@linaro.org> | 2022-06-08 19:38:55 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2022-06-08 19:38:55 +0100 |
| commit | 8b599e5c0274cd5e4a33be6a10d6cd04631a74d1 (patch) | |
| tree | 77485f0d17a566335f6733a1d15c48a369b627c1 /target/arm/cpu.h | |
| parent | f45ce4c35f5e0873bbbc3119eff8539610233b7e (diff) | |
| download | focaccia-qemu-8b599e5c0274cd5e4a33be6a10d6cd04631a74d1.tar.gz focaccia-qemu-8b599e5c0274cd5e4a33be6a10d6cd04631a74d1.zip | |
linux-user/aarch64: Introduce sve_vq
Add an interface function to extract the digested vector length rather than the raw zcr_el[1] value. This fixes an incorrect return from do_prctl_set_vl where we didn't take into account the set of vector lengths supported by the cpu. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220607203306.657998-3-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target/arm/cpu.h')
| -rw-r--r-- | target/arm/cpu.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/target/arm/cpu.h b/target/arm/cpu.h index e791ffdd6b..f5af88b686 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -3286,6 +3286,17 @@ static inline int cpu_mmu_index(CPUARMState *env, bool ifetch) return EX_TBFLAG_ANY(env->hflags, MMUIDX); } +/** + * sve_vq + * @env: the cpu context + * + * Return the VL cached within env->hflags, in units of quadwords. + */ +static inline int sve_vq(CPUARMState *env) +{ + return EX_TBFLAG_A64(env->hflags, VL) + 1; +} + static inline bool bswap_code(bool sctlr_b) { #ifdef CONFIG_USER_ONLY |