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target/arm: Add SVE to migration state 

Save the high parts of the Zregs and all of the Pregs.
The ZCR_ELx registers are migrated via the CP mechanism.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20180123035349.24538-4-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2018-01-22 19:53:47 -08:00 committed by Peter Maydell
parent 3c7d30866f
commit ef401601d5
1 changed files with 53 additions and 0 deletions
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53
target/arm/machine.c
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@ -122,6 +122,56 @@ static const VMStateDescription vmstate_iwmmxt = {
}
};
#ifdef TARGET_AARCH64
/* The expression ARM_MAX_VQ - 2 is 0 for pure AArch32 build,
* and ARMPredicateReg is actively empty. This triggers errors
* in the expansion of the VMSTATE macros.
*/
static bool sve_needed(void *opaque)
{
ARMCPU *cpu = opaque;
CPUARMState *env = &cpu->env;
return arm_feature(env, ARM_FEATURE_SVE);
}
/* The first two words of each Zreg is stored in VFP state. */
static const VMStateDescription vmstate_zreg_hi_reg = {
.name = "cpu/sve/zreg_hi",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT64_SUB_ARRAY(d, ARMVectorReg, 2, ARM_MAX_VQ - 2),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_preg_reg = {
.name = "cpu/sve/preg",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT64_ARRAY(p, ARMPredicateReg, 2 * ARM_MAX_VQ / 8),
VMSTATE_END_OF_LIST()
}
};
static const VMStateDescription vmstate_sve = {
.name = "cpu/sve",
.version_id = 1,
.minimum_version_id = 1,
.needed = sve_needed,
.fields = (VMStateField[]) {
VMSTATE_STRUCT_ARRAY(env.vfp.zregs, ARMCPU, 32, 0,
vmstate_zreg_hi_reg, ARMVectorReg),
VMSTATE_STRUCT_ARRAY(env.vfp.pregs, ARMCPU, 17, 0,
vmstate_preg_reg, ARMPredicateReg),
VMSTATE_END_OF_LIST()
}
};
#endif /* AARCH64 */
static bool m_needed(void *opaque)
{
ARMCPU *cpu = opaque;
@ -586,6 +636,9 @@ const VMStateDescription vmstate_arm_cpu = {
&vmstate_pmsav7,
&vmstate_pmsav8,
&vmstate_m_security,
#ifdef TARGET_AARCH64
&vmstate_sve,
#endif
NULL
}
};