Make relative path for native_bridge binaries configurable

This change introduces NativeBridgeRelativePath and
NativeBridgeSecondaryRelativePath product variables to
make relative path to native_bridge binaries configurable.

It also removes moves information about native bridge
host architecture to Target and sets it during decodeTargetProductVariables

Test: make PRODUCT-cf_x86_phone-userdebug dist
Change-Id: Ie736e81eae507e1775566ce9f29135011b12af27
diff --git a/android/androidmk.go b/android/androidmk.go
index 9bc2692..5b677dd 100644
--- a/android/androidmk.go
+++ b/android/androidmk.go
@@ -191,15 +191,7 @@
 		// Make cannot identify LOCAL_MODULE_TARGET_ARCH:= common.
 		if archStr != "common" {
 			if amod.Target().NativeBridge {
-				// TODO: Unhardcode these rules.
-				guestArchStr := archStr
-				hostArchStr := ""
-				if guestArchStr == "arm" {
-					hostArchStr = "x86"
-				} else if guestArchStr == "arm64" {
-					hostArchStr = "x86_64"
-				}
-
+				hostArchStr := amod.Target().NativeBridgeHostArchName
 				if hostArchStr != "" {
 					a.SetString("LOCAL_MODULE_TARGET_ARCH", hostArchStr)
 				}
diff --git a/android/arch.go b/android/arch.go
index 46e582c..44c3f48 100644
--- a/android/arch.go
+++ b/android/arch.go
@@ -691,9 +691,11 @@
 )
 
 type Target struct {
-	Os           OsType
-	Arch         Arch
-	NativeBridge NativeBridgeSupport
+	Os                       OsType
+	Arch                     Arch
+	NativeBridge             NativeBridgeSupport
+	NativeBridgeHostArchName string
+	NativeBridgeRelativePath string
 }
 
 func (target Target) String() string {
@@ -1403,7 +1405,8 @@
 	var targetErr error
 
 	addTarget := func(os OsType, archName string, archVariant, cpuVariant *string, abi []string,
-		nativeBridgeEnabled NativeBridgeSupport) {
+		nativeBridgeEnabled NativeBridgeSupport, nativeBridgeHostArchName *string,
+		nativeBridgeRelativePath *string) {
 		if targetErr != nil {
 			return
 		}
@@ -1413,12 +1416,21 @@
 			targetErr = err
 			return
 		}
+		nativeBridgeRelativePathStr := String(nativeBridgeRelativePath)
+		nativeBridgeHostArchNameStr := String(nativeBridgeHostArchName)
+
+		// Use guest arch as relative install path by default
+		if nativeBridgeEnabled && nativeBridgeRelativePathStr == "" {
+			nativeBridgeRelativePathStr = arch.ArchType.String()
+		}
 
 		targets[os] = append(targets[os],
 			Target{
-				Os:           os,
-				Arch:         arch,
-				NativeBridge: nativeBridgeEnabled,
+				Os:                       os,
+				Arch:                     arch,
+				NativeBridge:             nativeBridgeEnabled,
+				NativeBridgeHostArchName: nativeBridgeHostArchNameStr,
+				NativeBridgeRelativePath: nativeBridgeRelativePathStr,
 			})
 	}
 
@@ -1426,14 +1438,14 @@
 		return nil, fmt.Errorf("No host primary architecture set")
 	}
 
-	addTarget(BuildOs, *variables.HostArch, nil, nil, nil, NativeBridgeDisabled)
+	addTarget(BuildOs, *variables.HostArch, nil, nil, nil, NativeBridgeDisabled, nil, nil)
 
 	if variables.HostSecondaryArch != nil && *variables.HostSecondaryArch != "" {
-		addTarget(BuildOs, *variables.HostSecondaryArch, nil, nil, nil, NativeBridgeDisabled)
+		addTarget(BuildOs, *variables.HostSecondaryArch, nil, nil, nil, NativeBridgeDisabled, nil, nil)
 	}
 
 	if Bool(config.Host_bionic) {
-		addTarget(LinuxBionic, "x86_64", nil, nil, nil, NativeBridgeDisabled)
+		addTarget(LinuxBionic, "x86_64", nil, nil, nil, NativeBridgeDisabled, nil, nil)
 	}
 
 	if String(variables.CrossHost) != "" {
@@ -1446,10 +1458,10 @@
 			return nil, fmt.Errorf("No cross-host primary architecture set")
 		}
 
-		addTarget(crossHostOs, *variables.CrossHostArch, nil, nil, nil, NativeBridgeDisabled)
+		addTarget(crossHostOs, *variables.CrossHostArch, nil, nil, nil, NativeBridgeDisabled, nil, nil)
 
 		if variables.CrossHostSecondaryArch != nil && *variables.CrossHostSecondaryArch != "" {
-			addTarget(crossHostOs, *variables.CrossHostSecondaryArch, nil, nil, nil, NativeBridgeDisabled)
+			addTarget(crossHostOs, *variables.CrossHostSecondaryArch, nil, nil, nil, NativeBridgeDisabled, nil, nil)
 		}
 	}
 
@@ -1460,12 +1472,12 @@
 		}
 
 		addTarget(target, *variables.DeviceArch, variables.DeviceArchVariant,
-			variables.DeviceCpuVariant, variables.DeviceAbi, NativeBridgeDisabled)
+			variables.DeviceCpuVariant, variables.DeviceAbi, NativeBridgeDisabled, nil, nil)
 
 		if variables.DeviceSecondaryArch != nil && *variables.DeviceSecondaryArch != "" {
 			addTarget(Android, *variables.DeviceSecondaryArch,
 				variables.DeviceSecondaryArchVariant, variables.DeviceSecondaryCpuVariant,
-				variables.DeviceSecondaryAbi, NativeBridgeDisabled)
+				variables.DeviceSecondaryAbi, NativeBridgeDisabled, nil, nil)
 
 			deviceArches := targets[Android]
 			if deviceArches[0].Arch.ArchType.Multilib == deviceArches[1].Arch.ArchType.Multilib {
@@ -1476,7 +1488,8 @@
 		if variables.NativeBridgeArch != nil && *variables.NativeBridgeArch != "" {
 			addTarget(Android, *variables.NativeBridgeArch,
 				variables.NativeBridgeArchVariant, variables.NativeBridgeCpuVariant,
-				variables.NativeBridgeAbi, NativeBridgeEnabled)
+				variables.NativeBridgeAbi, NativeBridgeEnabled, variables.DeviceArch,
+				variables.NativeBridgeRelativePath)
 		}
 
 		if variables.DeviceSecondaryArch != nil && *variables.DeviceSecondaryArch != "" &&
@@ -1484,7 +1497,10 @@
 			addTarget(Android, *variables.NativeBridgeSecondaryArch,
 				variables.NativeBridgeSecondaryArchVariant,
 				variables.NativeBridgeSecondaryCpuVariant,
-				variables.NativeBridgeSecondaryAbi, NativeBridgeEnabled)
+				variables.NativeBridgeSecondaryAbi,
+				NativeBridgeEnabled,
+				variables.DeviceSecondaryArch,
+				variables.NativeBridgeSecondaryRelativePath)
 		}
 	}
 
diff --git a/android/config.go b/android/config.go
index c0ed50f..8ced93a 100644
--- a/android/config.go
+++ b/android/config.go
@@ -240,10 +240,10 @@
 	config := testConfig.config
 
 	config.Targets[Android] = []Target{
-		{Android, Arch{ArchType: X86_64, ArchVariant: "silvermont", Native: true, Abi: []string{"arm64-v8a"}}, NativeBridgeDisabled},
-		{Android, Arch{ArchType: X86, ArchVariant: "silvermont", Native: true, Abi: []string{"armeabi-v7a"}}, NativeBridgeDisabled},
-		{Android, Arch{ArchType: Arm64, ArchVariant: "armv8-a", Native: true, Abi: []string{"arm64-v8a"}}, NativeBridgeEnabled},
-		{Android, Arch{ArchType: Arm, ArchVariant: "armv7-a-neon", Native: true, Abi: []string{"armeabi-v7a"}}, NativeBridgeEnabled},
+		{Android, Arch{ArchType: X86_64, ArchVariant: "silvermont", Native: true, Abi: []string{"arm64-v8a"}}, NativeBridgeDisabled, "", ""},
+		{Android, Arch{ArchType: X86, ArchVariant: "silvermont", Native: true, Abi: []string{"armeabi-v7a"}}, NativeBridgeDisabled, "", ""},
+		{Android, Arch{ArchType: Arm64, ArchVariant: "armv8-a", Native: true, Abi: []string{"arm64-v8a"}}, NativeBridgeEnabled, "x86_64", "arm64"},
+		{Android, Arch{ArchType: Arm, ArchVariant: "armv7-a-neon", Native: true, Abi: []string{"armeabi-v7a"}}, NativeBridgeEnabled, "x86", "arm"},
 	}
 
 	return testConfig
@@ -255,10 +255,10 @@
 
 	config.Targets = map[OsType][]Target{
 		Fuchsia: []Target{
-			{Fuchsia, Arch{ArchType: Arm64, ArchVariant: "", Native: true}, NativeBridgeDisabled},
+			{Fuchsia, Arch{ArchType: Arm64, ArchVariant: "", Native: true}, NativeBridgeDisabled, "", ""},
 		},
 		BuildOs: []Target{
-			{BuildOs, Arch{ArchType: X86_64}, NativeBridgeDisabled},
+			{BuildOs, Arch{ArchType: X86_64}, NativeBridgeDisabled, "", ""},
 		},
 	}
 
@@ -272,12 +272,12 @@
 
 	config.Targets = map[OsType][]Target{
 		Android: []Target{
-			{Android, Arch{ArchType: Arm64, ArchVariant: "armv8-a", Native: true, Abi: []string{"arm64-v8a"}}, NativeBridgeDisabled},
-			{Android, Arch{ArchType: Arm, ArchVariant: "armv7-a-neon", Native: true, Abi: []string{"armeabi-v7a"}}, NativeBridgeDisabled},
+			{Android, Arch{ArchType: Arm64, ArchVariant: "armv8-a", Native: true, Abi: []string{"arm64-v8a"}}, NativeBridgeDisabled, "", ""},
+			{Android, Arch{ArchType: Arm, ArchVariant: "armv7-a-neon", Native: true, Abi: []string{"armeabi-v7a"}}, NativeBridgeDisabled, "", ""},
 		},
 		BuildOs: []Target{
-			{BuildOs, Arch{ArchType: X86_64}, NativeBridgeDisabled},
-			{BuildOs, Arch{ArchType: X86}, NativeBridgeDisabled},
+			{BuildOs, Arch{ArchType: X86_64}, NativeBridgeDisabled, "", ""},
+			{BuildOs, Arch{ArchType: X86}, NativeBridgeDisabled, "", ""},
 		},
 	}
 
diff --git a/android/variable.go b/android/variable.go
index fcd92d4..47586a7 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -165,15 +165,17 @@
 	DeviceSecondaryCpuVariant  *string  `json:",omitempty"`
 	DeviceSecondaryAbi         []string `json:",omitempty"`
 
-	NativeBridgeArch        *string  `json:",omitempty"`
-	NativeBridgeArchVariant *string  `json:",omitempty"`
-	NativeBridgeCpuVariant  *string  `json:",omitempty"`
-	NativeBridgeAbi         []string `json:",omitempty"`
+	NativeBridgeArch         *string  `json:",omitempty"`
+	NativeBridgeArchVariant  *string  `json:",omitempty"`
+	NativeBridgeCpuVariant   *string  `json:",omitempty"`
+	NativeBridgeAbi          []string `json:",omitempty"`
+	NativeBridgeRelativePath *string  `json:",omitempty"`
 
-	NativeBridgeSecondaryArch        *string  `json:",omitempty"`
-	NativeBridgeSecondaryArchVariant *string  `json:",omitempty"`
-	NativeBridgeSecondaryCpuVariant  *string  `json:",omitempty"`
-	NativeBridgeSecondaryAbi         []string `json:",omitempty"`
+	NativeBridgeSecondaryArch         *string  `json:",omitempty"`
+	NativeBridgeSecondaryArchVariant  *string  `json:",omitempty"`
+	NativeBridgeSecondaryCpuVariant   *string  `json:",omitempty"`
+	NativeBridgeSecondaryAbi          []string `json:",omitempty"`
+	NativeBridgeSecondaryRelativePath *string  `json:",omitempty"`
 
 	HostArch          *string `json:",omitempty"`
 	HostSecondaryArch *string `json:",omitempty"`
diff --git a/apex/apex.go b/apex/apex.go
index f95bd05..38ced96 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -656,8 +656,10 @@
 		dirInApex = "lib64"
 	}
 	dirInApex = filepath.Join(dirInApex, cc.RelativeInstallPath())
-	if cc.Target().NativeBridge == android.NativeBridgeEnabled || !cc.Arch().Native {
+	if !cc.Arch().Native {
 		dirInApex = filepath.Join(dirInApex, cc.Arch().ArchType.String())
+	} else if cc.Target().NativeBridge == android.NativeBridgeEnabled {
+		dirInApex = filepath.Join(dirInApex, cc.Target().NativeBridgeRelativePath)
 	}
 	if handleSpecialLibs {
 		switch cc.Name() {
@@ -681,8 +683,10 @@
 
 func getCopyManifestForExecutable(cc *cc.Module) (fileToCopy android.Path, dirInApex string) {
 	dirInApex = filepath.Join("bin", cc.RelativeInstallPath())
-	if cc.Target().NativeBridge == android.NativeBridgeEnabled || !cc.Arch().Native {
+	if !cc.Arch().Native {
 		dirInApex = filepath.Join(dirInApex, cc.Arch().ArchType.String())
+	} else if cc.Target().NativeBridge == android.NativeBridgeEnabled {
+		dirInApex = filepath.Join(dirInApex, cc.Target().NativeBridgeRelativePath)
 	}
 	fileToCopy = cc.OutputFile().Path()
 	return
diff --git a/cc/installer.go b/cc/installer.go
index cb261b7..a52ccf1 100644
--- a/cc/installer.go
+++ b/cc/installer.go
@@ -66,9 +66,12 @@
 	if ctx.toolchain().Is64Bit() && installer.dir64 != "" {
 		dir = installer.dir64
 	}
-	if (!ctx.Host() && !ctx.Arch().Native) || ctx.Target().NativeBridge == android.NativeBridgeEnabled {
+	if !ctx.Host() && !ctx.Arch().Native {
 		dir = filepath.Join(dir, ctx.Arch().ArchType.String())
 	}
+	if ctx.Target().NativeBridge == android.NativeBridgeEnabled {
+		dir = filepath.Join(dir, ctx.Target().NativeBridgeRelativePath)
+	}
 	if installer.location == InstallInData && ctx.useVndk() {
 		dir = filepath.Join(dir, "vendor")
 	}