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Diffstat (limited to 'src/cmd/link/internal/sym/symbol.go')
-rw-r--r-- | src/cmd/link/internal/sym/symbol.go | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/cmd/link/internal/sym/symbol.go b/src/cmd/link/internal/sym/symbol.go new file mode 100644 index 0000000..2f2c839 --- /dev/null +++ b/src/cmd/link/internal/sym/symbol.go @@ -0,0 +1,42 @@ +// Copyright 2017 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package sym + +import ( + "cmd/internal/obj" + "internal/buildcfg" +) + +const ( + SymVerABI0 = 0 + SymVerABIInternal = 1 + SymVerABICount = 2 // Number of internal ABIs + SymVerStatic = 10 // Minimum version used by static (file-local) syms +) + +func ABIToVersion(abi obj.ABI) int { + switch abi { + case obj.ABI0: + return SymVerABI0 + case obj.ABIInternal: + if !buildcfg.Experiment.RegabiWrappers { + // If wrappers are not enabled, ABI0 and ABIInternal are actually same + // so we normalize everything to ABI0. + return SymVerABI0 + } + return SymVerABIInternal + } + return -1 +} + +func VersionToABI(v int) (obj.ABI, bool) { + switch v { + case SymVerABI0: + return obj.ABI0, true + case SymVerABIInternal: + return obj.ABIInternal, true + } + return ^obj.ABI(0), false +} |