From cf13356dabd79219499bddb63551f61a67a510bb Mon Sep 17 00:00:00 2001
From: Koakuma <koachan@protonmail.com>
Date: Tue, 29 Mar 2022 20:37:32 +0700
Subject: [PATCH] stage2: sparcv9: Mir extraData implementation

---
 src/arch/riscv64/Mir.zig |  1 +
 src/arch/sparcv9/Mir.zig | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/src/arch/riscv64/Mir.zig b/src/arch/riscv64/Mir.zig
index 5df3a86229..7b5049b7d4 100644
--- a/src/arch/riscv64/Mir.zig
+++ b/src/arch/riscv64/Mir.zig
@@ -144,3 +144,4 @@ pub fn extraData(mir: Mir, comptime T: type, index: usize) struct { data: T, end
         .end = i,
     };
 }
+
diff --git a/src/arch/sparcv9/Mir.zig b/src/arch/sparcv9/Mir.zig
index 0f80a60ecf..c8b9c6544f 100644
--- a/src/arch/sparcv9/Mir.zig
+++ b/src/arch/sparcv9/Mir.zig
@@ -58,3 +58,23 @@ pub fn deinit(mir: *Mir, gpa: std.mem.Allocator) void {
     mir.* = undefined;
 }
 
+/// Returns the requested data, as well as the new index which is at the start of the
+/// trailers for the object.
+pub fn extraData(mir: Mir, comptime T: type, index: usize) struct { data: T, end: usize } {
+    const fields = std.meta.fields(T);
+    var i: usize = index;
+    var result: T = undefined;
+    inline for (fields) |field| {
+        @field(result, field.name) = switch (field.field_type) {
+            u32 => mir.extra[i],
+            i32 => @bitCast(i32, mir.extra[i]),
+            else => @compileError("bad field type"),
+        };
+        i += 1;
+    }
+    return .{
+        .data = result,
+        .end = i,
+    };
+}
+