| // 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 |
| } |
