stage2: sparcv9: Add simple test case

test/stage2/sparcv9.zig

@@ -0,0 +1,39 @@
+const std = @import("std");
+const TestContext = @import("../../src/test.zig").TestContext;
+
+const linux_sparcv9 = std.zig.CrossTarget{
+    .cpu_arch = .sparcv9,
+    .os_tag = .linux,
+};
+
+pub fn addCases(ctx: *TestContext) !void {
+    {
+        var case = ctx.exe("sparcv9 hello world", linux_sparcv9);
+        // Regular old hello world
+        case.addCompareOutput(
+            \\const msg = "Hello, World!\n";
+            \\
+            \\pub export fn _start() noreturn {
+            \\    asm volatile ("ta 0x6d"
+            \\        :
+            \\        : [number] "{g1}" (4),
+            \\            [arg1] "{o0}" (1),
+            \\            [arg2] "{o1}" (@ptrToInt(msg)),
+            \\            [arg3] "{o2}" (msg.len)
+            \\        : "o0", "o1", "o2", "o3", "o4", "o5", "o6", "o7", "memory"
+            \\    );
+            \\
+            \\    asm volatile ("ta 0x6d"
+            \\        :
+            \\        : [number] "{g1}" (1),
+            \\            [arg1] "{o0}" (0)
+            \\        : "o0", "o1", "o2", "o3", "o4", "o5", "o6", "o7", "memory"
+            \\    );
+            \\
+            \\    unreachable;
+            \\}
+        ,
+            "Hello, World!\n",
+        );
+    }
+}