1//===-- AArch64AttributeParser.cpp - AArch64 Build Attributes PArser------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with
4// LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===---------------------------------------------------------------------===//
9
10#include "llvm/Support/AArch64AttributeParser.h"
11#include "llvm/Support/AArch64BuildAttributes.h"
12
13std::vector<llvm::SubsectionAndTagToTagName> &
14llvm::AArch64AttributeParser::returnTagsNamesMap() {
15 static std::vector<SubsectionAndTagToTagName> TagsNamesMap = {
16 {.SubsectionName: "aeabi_pauthabi", .Tag: 1, .TagName: "Tag_PAuth_Platform"},
17 {.SubsectionName: "aeabi_pauthabi", .Tag: 2, .TagName: "Tag_PAuth_Schema"},
18 {.SubsectionName: "aeabi_feature_and_bits", .Tag: 0, .TagName: "Tag_Feature_BTI"},
19 {.SubsectionName: "aeabi_feature_and_bits", .Tag: 1, .TagName: "Tag_Feature_PAC"},
20 {.SubsectionName: "aeabi_feature_and_bits", .Tag: 2, .TagName: "Tag_Feature_GCS"}};
21 return TagsNamesMap;
22}
23
24llvm::AArch64BuildAttrSubsections llvm::extractBuildAttributesSubsections(
25 const llvm::AArch64AttributeParser &Attributes) {
26
27 llvm::AArch64BuildAttrSubsections SubSections;
28 auto GetPauthValue = [&Attributes](unsigned Tag) {
29 return Attributes.getAttributeValue(BuildAttrSubsectionName: "aeabi_pauthabi", Tag).value_or(u: 0);
30 };
31 SubSections.Pauth.TagPlatform =
32 GetPauthValue(llvm::AArch64BuildAttributes::TAG_PAUTH_PLATFORM);
33 SubSections.Pauth.TagSchema =
34 GetPauthValue(llvm::AArch64BuildAttributes::TAG_PAUTH_SCHEMA);
35
36 auto GetFeatureValue = [&Attributes](unsigned Tag) {
37 return Attributes.getAttributeValue(BuildAttrSubsectionName: "aeabi_feature_and_bits", Tag)
38 .value_or(u: 0);
39 };
40 SubSections.AndFeatures |=
41 GetFeatureValue(llvm::AArch64BuildAttributes::TAG_FEATURE_BTI);
42 SubSections.AndFeatures |=
43 GetFeatureValue(llvm::AArch64BuildAttributes::TAG_FEATURE_PAC) << 1;
44 SubSections.AndFeatures |=
45 GetFeatureValue(llvm::AArch64BuildAttributes::TAG_FEATURE_GCS) << 2;
46
47 return SubSections;
48}
49