Target: add OpenHarmonyOS ABI

Closes #20009

lib/std/Target.zig

@@ -649,6 +649,7 @@ pub const Abi = enum {
     callable,
     mesh,
     amplification,
+    ohos,
 
     pub fn default(arch: Cpu.Arch, os: Os) Abi {
         return if (arch.isWasm()) .musl else switch (os.tag) {
@@ -688,6 +689,7 @@ pub const Abi = enum {
             .wasi,
             .emscripten,
             => .musl,
+            .liteos => .ohos,
             .opencl, // TODO: SPIR-V ABIs with Linkage capability
             .glsl450,
             .vulkan,
@@ -699,7 +701,6 @@ pub const Abi = enum {
             .visionos,
             .driverkit,
             .shadermodel,
-            .liteos, // TODO: audit this
             .solaris,
             .illumos,
             .serenity,
@@ -716,7 +717,8 @@ pub const Abi = enum {
 
     pub inline fn isMusl(abi: Abi) bool {
         return switch (abi) {
-            .musl, .musleabi, .musleabihf => true,
+            .musl, .musleabi, .musleabihf, .muslx32 => true,
+            .ohos => true,
             else => false,
         };
     }
@@ -727,6 +729,7 @@ pub const Abi = enum {
             .eabihf,
             .musleabihf,
             => .hard,
+            .ohos => .soft,
             else => .soft,
         };
     }

lib/std/zig/LibCDirs.zig

@@ -242,6 +242,7 @@ fn libCGenericName(target: std.Target) [:0]const u8 {
         .musleabihf,
         .muslx32,
         .none,
+        .ohos,
         => return "musl",
         .code16,
         .eabi,

src/codegen/llvm.zig

@@ -212,6 +212,7 @@ pub fn targetTriple(allocator: Allocator, target: std.Target) ![]const u8 {
         .callable => "callable",
         .mesh => "mesh",
         .amplification => "amplification",
+        .ohos => "ohos",
     };
     try llvm_triple.appendSlice(llvm_abi);
 

src/target.zig

@@ -45,7 +45,8 @@ pub fn requiresPIC(target: std.Target, linking_libc: bool) bool {
     return target.isAndroid() or
         target.os.tag == .windows or target.os.tag == .uefi or
         osRequiresLibC(target) or
-        (linking_libc and target.isGnuLibC());
+        (linking_libc and target.isGnuLibC()) or
+        (target.abi == .ohos and target.cpu.arch == .aarch64);
 }
 
 /// This is not whether the target supports Position Independent Code, but whether the -fPIC