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| author | Richard Henderson <richard.henderson@linaro.org> | 2023-01-12 11:24:33 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2023-01-23 13:32:38 +0000 |
| commit | 7f2a01e7368f960fadea38f437d0f6de7f249686 (patch) | |
| tree | b11c5af95a2176248473f644aec8387005adbd28 /target/arm/helper.c | |
| parent | 2a8af3825958e5d8c98b3ca92ac42a10e25db9e1 (diff) | |
| download | focaccia-qemu-7f2a01e7368f960fadea38f437d0f6de7f249686.tar.gz focaccia-qemu-7f2a01e7368f960fadea38f437d0f6de7f249686.zip | |
target/arm/sme: Reset SVE state in aarch64_set_svcr()
Move arm_reset_sve_state() calls to aarch64_set_svcr(). Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Fabiano Rosas <farosas@suse.de> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20230112102436.1913-5-philmd@linaro.org Message-Id: <20230112004322.161330-1-richard.henderson@linaro.org> [PMD: Split patch in multiple tiny steps] Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target/arm/helper.c')
| -rw-r--r-- | target/arm/helper.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c index 24c069b8ac..0ac867c411 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -6725,11 +6725,24 @@ static CPAccessResult access_esm(CPUARMState *env, const ARMCPRegInfo *ri, return CP_ACCESS_OK; } +/* ResetSVEState */ +static void arm_reset_sve_state(CPUARMState *env) +{ + memset(env->vfp.zregs, 0, sizeof(env->vfp.zregs)); + /* Recall that FFR is stored as pregs[16]. */ + memset(env->vfp.pregs, 0, sizeof(env->vfp.pregs)); + vfp_set_fpcr(env, 0x0800009f); +} + void aarch64_set_svcr(CPUARMState *env, uint64_t new, uint64_t mask) { uint64_t change = (env->svcr ^ new) & mask; env->svcr ^= change; + + if (change & R_SVCR_SM_MASK) { + arm_reset_sve_state(env); + } } static void svcr_write(CPUARMState *env, const ARMCPRegInfo *ri, |