build.zig and memory.x as ld file for tivatm4c123g

basics/build.zig

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+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    const exe = b.addExecutable(.{
+        .name = "HAL-9000",
+        .version = "0.1.0",
+        .debug = true,
+        .root_source_file = b.path("src/main.zig"),
+        .target = target,
+        .optimize = optimize,
+    });
+
+    b.installArtifact(exe);
+
+    const run_cmd = b.addRunArtifact(exe);
+    const run_step = b.step("run", "Run the app");
+    run_step.dependOn(&run_cmd.step);
+}

basics/src/calc.zig

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+
+pub fn add(a: i32, b: i32) i32 {
+    return a + b;
+}
+
+pub fn sub(a: i32, b: i32) i32 {
+    return a - b;
+}
+
+pub fn mul(a: i32, b: i32) i32 {
+    return a * b;
+}
+
+pub fn divFloor(a: i32, b: i32) i32 {
+    return @divFloor(a, b);
+}

basics/src/main.zig

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+// src/main.zig
+const std = @import("std");
+
+fn sumUpTo(comptime n: u32) u64 {
+    var sum: u64 = 0;
+    var i: usize = 0;
+    while (i < n+1) : (i+=1) {
+        sum = sum + i;
+    }
+    return sum;
+}
+
+fn sumUpTo2(comptime n: u32) u64 {
+    var sum: u64 = 0;
+    for (0..n + 1) |i| {
+        sum += i;
+    }
+    return sum;
+}
+
+pub fn main() !void {
+    const r1 = comptime sumUpTo(100);
+    const r2 = sumUpTo2(1_000_000);
+    std.debug.print("{d}\n", .{r1});
+    std.debug.print("{d}\n", .{r2});
+}