From d7f0844f5a181a8ce8fea00c09872b4620281bc1 Mon Sep 17 00:00:00 2001
From: Elliott Hughes <enh@google.com>
Date: Tue, 4 Oct 2022 00:36:29 +0000
Subject: [PATCH] Add risc-v support to versioner.

Also fill out some of the data we've fallen behind on, like "which API
levels actually exist".

Signed-off-by: Mao Han <han_mao@linux.alibaba.com>
Signed-off-by: Xia Lifang <lifang_xia@linux.alibaba.com>
Signed-off-by: Chen Guoyin <chenguoyin.cgy@linux.alibaba.com>
Signed-off-by: Wang Chen <wangchen20@iscas.ac.cn>
Signed-off-by: Lu Xufan <luxufan@iscas.ac.cn>
Test: treehugger
Change-Id: I1939426c4a22fea14232a7a93c768691ebb242ec
---
 tools/versioner/src/Arch.cpp                | 4 ++++
 tools/versioner/src/Arch.h                  | 9 ++++++++-
 tools/versioner/src/DeclarationDatabase.cpp | 1 +
 tools/versioner/src/Preprocessor.cpp        | 3 ++-
 tools/versioner/src/versioner.h             | 2 +-
 5 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/tools/versioner/src/Arch.cpp b/tools/versioner/src/Arch.cpp
index 3a27a6e34..d4d0208d5 100644
--- a/tools/versioner/src/Arch.cpp
+++ b/tools/versioner/src/Arch.cpp
@@ -28,6 +28,9 @@ std::string to_string(const Arch& arch) {
     case Arch::arm64:
       return "arm64";
 
+    case Arch::riscv64:
+      return "riscv64";
+
     case Arch::x86:
       return "x86";
 
@@ -41,6 +44,7 @@ std::string to_string(const Arch& arch) {
 static const std::unordered_map<std::string, Arch> arch_name_map{
   {"arm", Arch::arm},
   {"arm64", Arch::arm64},
+  {"riscv64", Arch::riscv64},
   {"x86", Arch::x86},
   {"x86_64", Arch::x86_64},
 };
diff --git a/tools/versioner/src/Arch.h b/tools/versioner/src/Arch.h
index 74d0f8f42..fd98abc00 100644
--- a/tools/versioner/src/Arch.h
+++ b/tools/versioner/src/Arch.h
@@ -28,6 +28,7 @@
 enum class Arch : size_t {
   arm = 0,
   arm64,
+  riscv64,
   x86,
   x86_64,
 };
@@ -121,6 +122,7 @@ class ArchMapIterator {
 static const std::set<Arch> supported_archs = {
   Arch::arm,
   Arch::arm64,
+  Arch::riscv64,
   Arch::x86,
   Arch::x86_64,
 };
@@ -128,17 +130,19 @@ static const std::set<Arch> supported_archs = {
 static ArchMap<std::string> arch_targets = {
   { Arch::arm, "arm-linux-androideabi" },
   { Arch::arm64, "aarch64-linux-android" },
+  { Arch::riscv64, "riscv64-linux-android" },
   { Arch::x86, "i686-linux-android" },
   { Arch::x86_64, "x86_64-linux-android" },
 };
 
 static const std::set<int> default_levels = {
-  14, 15, 16, 17, 18, 19, 21, 23, 24, 25, 26, 27, 28, 29, 30,
+  14, 15, 16, 17, 18, 19, 21, 23, 24, 25, 26, 27, 28, 29, 30, 31, 33, 34,
 };
 
 static const ArchMap<int> arch_min_api = {
   { Arch::arm, 9 },
   { Arch::arm64, 21 },
+  { Arch::riscv64, 10000 },
   { Arch::x86, 9 },
   { Arch::x86_64, 21 },
 };
@@ -160,4 +164,7 @@ static const std::unordered_map<std::string, int> api_codename_map{
   {"P", 28},
   {"Q", 29},
   {"R", 30},
+  {"S", 31},
+  {"T", 33},
+  {"U", 34},
 };
diff --git a/tools/versioner/src/DeclarationDatabase.cpp b/tools/versioner/src/DeclarationDatabase.cpp
index ec2e38dbe..a029c3bdf 100644
--- a/tools/versioner/src/DeclarationDatabase.cpp
+++ b/tools/versioner/src/DeclarationDatabase.cpp
@@ -170,6 +170,7 @@ class Visitor : public RecursiveASTVisitor<Visitor> {
               &arch_availability[Arch::x86].introduced } },
           { "introduced_in_64",
             { &arch_availability[Arch::arm64].introduced,
+              &arch_availability[Arch::riscv64].introduced,
               &arch_availability[Arch::x86_64].introduced } },
         };
 
diff --git a/tools/versioner/src/Preprocessor.cpp b/tools/versioner/src/Preprocessor.cpp
index eb88c4669..14f80d8aa 100644
--- a/tools/versioner/src/Preprocessor.cpp
+++ b/tools/versioner/src/Preprocessor.cpp
@@ -141,11 +141,12 @@ static std::string generateGuardCondition(const DeclarationAvailability& avail)
   static const std::vector<std::pair<std::string, std::set<Arch>>> arch_sets = {
     { "", supported_archs },
     { "!defined(__LP64__)", { Arch::arm, Arch::x86 } },
-    { "defined(__LP64__)", { Arch::arm64, Arch::x86_64 } },
+    { "defined(__LP64__)", { Arch::arm64, Arch::riscv64, Arch::x86_64 } },
   };
   std::map<Arch, std::string> individual_archs = {
     { Arch::arm, "defined(__arm__)" },
     { Arch::arm64, "defined(__aarch64__)" },
+    { Arch::riscv64, "defined(__riscv)" },
     { Arch::x86, "defined(__i386__)" },
     { Arch::x86_64, "defined(__x86_64__)" },
   };
diff --git a/tools/versioner/src/versioner.h b/tools/versioner/src/versioner.h
index e9c4989e3..225e14bde 100644
--- a/tools/versioner/src/versioner.h
+++ b/tools/versioner/src/versioner.h
@@ -39,5 +39,5 @@ static const std::unordered_map<std::string, std::set<Arch>> ignored_headers = {
   { "sys/_system_properties.h", supported_archs },
 
   // time64.h #errors when included on LP64 archs.
-  { "time64.h", { Arch::arm64, Arch::x86_64 } },
+  { "time64.h", { Arch::arm64, Arch::riscv64, Arch::x86_64 } },
 };