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Etienne PerotandgVisor bot
d53fe574e0
This moves the initialization of `cpuid.hostFeatureSet` out of package-level `init` and instead moves it to an explicit `cpuid.Initialize()` function. On AMD64, this saves about 512KiB of heap memory that would otherwise always be live. PiperOrigin-RevId: 514896323
83 lines
2.3 KiB
Go
83 lines
2.3 KiB
Go
// Copyright 2019 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build arm64
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// +build arm64
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package ring0
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// storeEl0Fpstate writes the address of application's fpstate.
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func storeEl0Fpstate(value *byte)
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// storeAppASID writes the application's asid value.
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func storeAppASID(asid uintptr)
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// LocalFlushTlbAll same as FlushTlbAll, but only applies to the calling CPU.
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func LocalFlushTlbAll()
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// FlushTlbByVA invalidates tlb by VA/Last-level/Inner-Shareable.
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func FlushTlbByVA(addr uintptr)
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// FlushTlbByASID invalidates tlb by ASID/Inner-Shareable.
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func FlushTlbByASID(asid uintptr)
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// LocalFlushTlbByASID invalidates tlb by ASID.
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func LocalFlushTlbByASID(asid uintptr)
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// FlushTlbAll invalidates all tlb.
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func FlushTlbAll()
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// CPACREL1 returns the value of the CPACR_EL1 register.
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func CPACREL1() (value uintptr)
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// GetFPCR returns the value of FPCR register.
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func GetFPCR() (value uintptr)
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// SetFPCR writes the FPCR value.
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func SetFPCR(value uintptr)
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// GetFPSR returns the value of FPSR register.
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func GetFPSR() (value uintptr)
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// SetFPSR writes the FPSR value.
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func SetFPSR(value uintptr)
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// SaveVRegs saves V0-V31 registers.
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// V0-V31: 32 128-bit registers for floating point and simd.
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func SaveVRegs(*byte)
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// LoadVRegs loads V0-V31 registers.
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func LoadVRegs(*byte)
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// LoadFloatingPoint loads floating point state.
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func LoadFloatingPoint(*byte)
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// SaveFloatingPoint saves floating point state.
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func SaveFloatingPoint(*byte)
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// FPSIMDDisableTrap disables fpsimd.
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func FPSIMDDisableTrap()
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// FPSIMDEnableTrap enables fpsimd.
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func FPSIMDEnableTrap()
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// Init sets function pointers based on architectural features.
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//
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// This must be called prior to using ring0.
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func Init() {}
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// InitDefault calls Init with default parameters.
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// On ARM, this is not much.
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func InitDefault() {}
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