sylveos

commit f4fb47a6ec50ad18e6043a8cf55a65404b2718bb
parent fd4af9335888b63b00d8c3b9b46924fba1daa04e
Author: Sylvia Ivory <git@sivory.net>
Date:   Tue, 13 Jan 2026 17:53:31 -0800

Ensure strict alignment

Diffstat:
M
build.zig
 | 
25
+++++++++++++------------

1 file changed, 13 insertions(+), 12 deletions(-)
diff --git a/build.zig b/build.zig
@@ -1,19 +1,20 @@
 const std = @import("std");
 const config = @import("build.zig.zon");
 
-const fs = std.fs;
-
-// BCM2835 is **very specifically** the ARM1176JZF-S
-// https://www.raspberrypi.com/documentation/computers/processors.html
-const target: std.Target.Query = .{
-    .cpu_arch = .arm,
-    .cpu_model = .{ .explicit = &std.Target.arm.cpu.arm1176jzf_s },
-    .cpu_features_add = std.Target.arm.cpu.arm1176jzf_s.features,
-    .os_tag = .freestanding,
-    .abi = .eabi,
-};
-
 fn add_exe(exe_name: []const u8, path: std.Build.LazyPath, b: *std.Build) !*std.Build.Step.Compile {
+    var cpu_features = std.Target.arm.cpu.arm1176jzf_s.features;
+    cpu_features.addFeatureSet(std.Target.arm.featureSet(&[_]std.Target.arm.Feature{.strict_align}));
+
+    const target: std.Target.Query = .{
+        .cpu_arch = .arm,
+        .cpu_model = .{ .explicit = &std.Target.arm.cpu.arm1176jzf_s },
+        .cpu_features_add = cpu_features,
+        .os_tag = .freestanding,
+        .abi = .eabi,
+    };
+
+    // BCM2835 is **very specifically** the ARM1176JZF-S
+    // https://www.raspberrypi.com/documentation/computers/processors.html
     const exe = b.addExecutable(.{
         .name = exe_name,
         .linkage = .static,