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target/arm: Enable SVE for aarch64-linux-user

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Enable ARM_FEATURE_SVE for the generic "max" cpu.

Backports commit 802ac0e1e956f3b34a7cb0eda4ec28a60aa87a0a from qemu
This commit is contained in:
Richard Henderson 2018-07-03 04:46:39 -04:00 committed by Lioncash
parent d343f8ac0f
commit d4a8f1bfcb
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GPG key ID: 4E3C3CC1031BA9C7
2 changed files with 8 additions and 0 deletions
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7
qemu/target/arm/cpu.c
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@ -156,6 +156,13 @@ static void arm_cpu_reset(CPUState *s)
env->cp15.sctlr_el[1] |= SCTLR_UCT | SCTLR_UCI | SCTLR_DZE;
/* and to the FP/Neon instructions */
env->cp15.cpacr_el1 = deposit64(env->cp15.cpacr_el1, 20, 2, 3);
/* and to the SVE instructions */
env->cp15.cpacr_el1 = deposit64(env->cp15.cpacr_el1, 16, 2, 3);
env->cp15.cptr_el[3] |= CPTR_EZ;
/* with maximum vector length */
env->vfp.zcr_el[1] = ARM_MAX_VQ - 1;
env->vfp.zcr_el[2] = ARM_MAX_VQ - 1;
env->vfp.zcr_el[3] = ARM_MAX_VQ - 1;
#else
/* Reset into the highest available EL */
if (arm_feature(env, ARM_FEATURE_EL3)) {

1
qemu/target/arm/cpu64.c
View file

@ -225,6 +225,7 @@ static void aarch64_max_initfn(struct uc_struct *uc, Object *obj, void *opaque)
set_feature(&cpu->env, ARM_FEATURE_V8_RDM);
set_feature(&cpu->env, ARM_FEATURE_V8_FP16);
set_feature(&cpu->env, ARM_FEATURE_V8_FCMA);
set_feature(&cpu->env, ARM_FEATURE_SVE);
/* For usermode -cpu max we can use a larger and more efficient DCZ
* blocksize since we don't have to follow what the hardware does.
*/