25 lines
1.2 KiB
Go
25 lines
1.2 KiB
Go
// Copyright 2023 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package abi
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// These functions are the build-time version of the Go type data structures.
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// Their contents must be kept in sync with their definitions.
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// Because the host and target type sizes can differ, the compiler and
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// linker cannot use the host information that they might get from
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// either unsafe.Sizeof and Alignof, nor runtime, reflect, or reflectlite.
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// CommonSize returns sizeof(Type) for a compilation target with a given ptrSize
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func CommonSize(ptrSize int) int { return 4*ptrSize + 8 + 8 }
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// StructFieldSize returns sizeof(StructField) for a compilation target with a given ptrSize
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func StructFieldSize(ptrSize int) int { return 3 * ptrSize }
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// UncommonSize returns sizeof(UncommonType). This currently does not depend on ptrSize.
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// This exported function is in an internal package, so it may change to depend on ptrSize in the future.
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func UncommonSize() uint64 { return 4 + 2 + 2 + 4 + 4 }
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// TFlagOff returns the offset of Type.TFlag for a compilation target with a given ptrSize
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func TFlagOff(ptrSize int) int { return 2*ptrSize + 4 }
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