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1// Copyright 2015 Google Inc. All rights reserved.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package config
16
17import (
18	"fmt"
19	"strings"
20
21	"android/soong/android"
22)
23
24var (
25	x86Cflags = []string{
26		"-msse3",
27
28		// -mstackrealign is needed to realign stack in native code
29		// that could be called from JNI, so that movaps instruction
30		// will work on assumed stack aligned local variables.
31		"-mstackrealign",
32	}
33
34	x86Cppflags = []string{}
35
36	x86Ldflags = []string{
37		"-Wl,--hash-style=gnu",
38	}
39
40	x86ArchVariantCflags = map[string][]string{
41		"": []string{
42			"-march=prescott",
43		},
44		"x86_64": []string{
45			"-march=prescott",
46		},
47		"atom": []string{
48			"-march=atom",
49		},
50		"broadwell": []string{
51			"-march=broadwell",
52		},
53		"haswell": []string{
54			"-march=core-avx2",
55		},
56		"ivybridge": []string{
57			"-march=core-avx-i",
58		},
59		"sandybridge": []string{
60			"-march=corei7",
61		},
62		"silvermont": []string{
63			"-march=slm",
64		},
65		"skylake": []string{
66			"-march=skylake",
67		},
68		"stoneyridge": []string{
69			"-march=bdver4",
70		},
71	}
72
73	x86ArchFeatureCflags = map[string][]string{
74		"ssse3":  []string{"-mssse3"},
75		"sse4":   []string{"-msse4"},
76		"sse4_1": []string{"-msse4.1"},
77		"sse4_2": []string{"-msse4.2"},
78
79		// Not all cases there is performance gain by enabling -mavx -mavx2
80		// flags so these flags are not enabled by default.
81		// if there is performance gain in individual library components,
82		// the compiler flags can be set in corresponding bp files.
83		// "avx":    []string{"-mavx"},
84		// "avx2":   []string{"-mavx2"},
85		// "avx512": []string{"-mavx512"}
86
87		"aes_ni": []string{"-maes"},
88	}
89)
90
91const (
92	x86GccVersion = "4.9"
93)
94
95func init() {
96	pctx.StaticVariable("x86GccVersion", x86GccVersion)
97
98	pctx.SourcePathVariable("X86GccRoot",
99		"prebuilts/gcc/${HostPrebuiltTag}/x86/x86_64-linux-android-${x86GccVersion}")
100
101	exportedVars.ExportStringListStaticVariable("X86ToolchainCflags", []string{"-m32"})
102	exportedVars.ExportStringListStaticVariable("X86ToolchainLdflags", []string{"-m32"})
103
104	exportedVars.ExportStringListStaticVariable("X86Ldflags", x86Ldflags)
105	exportedVars.ExportStringListStaticVariable("X86Lldflags", x86Ldflags)
106
107	// Clang cflags
108	exportedVars.ExportStringListStaticVariable("X86Cflags", x86Cflags)
109	exportedVars.ExportStringListStaticVariable("X86Cppflags", x86Cppflags)
110
111	// Yasm flags
112	exportedVars.ExportStringListStaticVariable("X86YasmFlags", []string{
113		"-f elf32",
114		"-m x86",
115	})
116
117	// Extended cflags
118	exportedVars.ExportStringListDict("X86ArchVariantCflags", x86ArchVariantCflags)
119	exportedVars.ExportStringListDict("X86ArchFeatureCflags", x86ArchFeatureCflags)
120
121	// Architecture variant cflags
122	for variant, cflags := range x86ArchVariantCflags {
123		pctx.StaticVariable("X86"+variant+"VariantCflags", strings.Join(cflags, " "))
124	}
125}
126
127type toolchainX86 struct {
128	toolchainBionic
129	toolchain32Bit
130	toolchainCflags string
131}
132
133func (t *toolchainX86) Name() string {
134	return "x86"
135}
136
137func (t *toolchainX86) GccRoot() string {
138	return "${config.X86GccRoot}"
139}
140
141func (t *toolchainX86) GccTriple() string {
142	return "x86_64-linux-android"
143}
144
145func (t *toolchainX86) GccVersion() string {
146	return x86GccVersion
147}
148
149func (t *toolchainX86) IncludeFlags() string {
150	return ""
151}
152
153func (t *toolchainX86) ClangTriple() string {
154	return "i686-linux-android"
155}
156
157func (t *toolchainX86) ToolchainLdflags() string {
158	return "${config.X86ToolchainLdflags}"
159}
160
161func (t *toolchainX86) ToolchainCflags() string {
162	return t.toolchainCflags
163}
164
165func (t *toolchainX86) Cflags() string {
166	return "${config.X86Cflags}"
167}
168
169func (t *toolchainX86) Cppflags() string {
170	return "${config.X86Cppflags}"
171}
172
173func (t *toolchainX86) Ldflags() string {
174	return "${config.X86Ldflags}"
175}
176
177func (t *toolchainX86) Lldflags() string {
178	return "${config.X86Lldflags}"
179}
180
181func (t *toolchainX86) YasmFlags() string {
182	return "${config.X86YasmFlags}"
183}
184
185func (toolchainX86) LibclangRuntimeLibraryArch() string {
186	return "i686"
187}
188
189func x86ToolchainFactory(arch android.Arch) Toolchain {
190	// Error now rather than having a confusing Ninja error
191	if _, ok := x86ArchVariantCflags[arch.ArchVariant]; !ok {
192		panic(fmt.Sprintf("Unknown x86 architecture version: %q", arch.ArchVariant))
193	}
194
195	toolchainCflags := []string{
196		"${config.X86ToolchainCflags}",
197		"${config.X86" + arch.ArchVariant + "VariantCflags}",
198	}
199
200	for _, feature := range arch.ArchFeatures {
201		toolchainCflags = append(toolchainCflags, x86ArchFeatureCflags[feature]...)
202	}
203
204	return &toolchainX86{
205		toolchainCflags: strings.Join(toolchainCflags, " "),
206	}
207}
208
209func init() {
210	registerToolchainFactory(android.Android, android.X86, x86ToolchainFactory)
211}
212