AArch64 basic boot and upper reloc

2025-03-17 23:05:53 +02:00
parent caec288157
commit 7305ce220a
7 changed files with 496 additions and 9 deletions
@@ -7,14 +7,35 @@ const SupportedArch = enum {
    riscv64,

    fn makeTarget(self: SupportedArch, b: *std.Build) std.Build.ResolvedTarget {
-        return b.resolveTargetQuery(.{
-            .cpu_arch = switch (self) {
-                .riscv64 => .riscv64,
-                .aarch64 => .aarch64,
+        switch (self) {
+            .riscv64 => {
+                return b.resolveTargetQuery(.{
+                    .cpu_arch = .riscv64,
+                    .os_tag = .freestanding,
+                    .abi = .none,
+                });
            },
-            .os_tag = .freestanding,
-            .abi = .none,
-        });
+            .aarch64 => {
+                const T = std.Target.aarch64;
+
+                const addFeatures = T.featureSet(&.{
+                    T.Feature.v8a,
+                    T.Feature.strict_align,
+                });
+                const subFeatures = T.featureSet(&.{
+                    T.Feature.neon,
+                    T.Feature.fp_armv8,
+                });
+
+                return b.resolveTargetQuery(.{
+                    .cpu_arch = .aarch64,
+                    .os_tag = .freestanding,
+                    .abi = .none,
+                    .cpu_features_add = addFeatures,
+                    .cpu_features_sub = subFeatures,
+                });
+            },
+        }
    }

    fn addTargetSpecific(self: SupportedArch, b: *std.Build, kernel: *std.Build.Step.Compile) anyerror!*std.Build.Step {