32 lines
1.2 KiB
C
32 lines
1.2 KiB
C
/*
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* Copyright (C) 2014 The Android Open Source Project
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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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*/
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#ifndef _BIONIC_CONSTANTS_H_
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#define _BIONIC_CONSTANTS_H_
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#define NS_PER_S 1000000000
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// Size of the shadow call stack. This must be a power of 2.
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#define SCS_SIZE (8 * 1024)
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// The shadow call stack is allocated at an aligned address within a guard region of this size. The
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// guard region must be large enough that we can allocate an SCS_SIZE-aligned SCS while ensuring
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// that there is at least one guard page after the SCS so that a stack overflow results in a SIGSEGV
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// instead of corrupting the allocation that comes after it.
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#define SCS_GUARD_REGION_SIZE (16 * 1024 * 1024)
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#endif // _BIONIC_CONSTANTS_H_
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