compilation: pass omit_frame_pointer through to builtin.zig

Renamed dwarf_unwinding -> stack_iterator to better reflect that it's not just DWARF unwinding. Added a test for unwinding with a frame pointer.
2023-07-13 01:14:31 -04:00
parent 7d8b423477
commit ec96095efd
7 changed files with 60 additions and 22 deletions
--- a/test/standalone/stack_iterator/build.zig
+++ b/test/standalone/stack_iterator/build.zig
@@ -0,0 +1,70 @@
+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const test_step = b.step("test", "Test it");
+    b.default_step = test_step;
+
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    // Unwinding pure zig code, with a frame pointer
+    {
+        const exe = b.addExecutable(.{
+            .name = "zig_unwind_fp",
+            .root_source_file = .{ .path = "zig_unwind.zig" },
+            .target = target,
+            .optimize = optimize,
+        });
+
+        if (target.isDarwin()) exe.unwind_tables = true;
+        exe.omit_frame_pointer = false;
+
+        const run_cmd = b.addRunArtifact(exe);
+        test_step.dependOn(&run_cmd.step);
+    }
+
+    // Unwinding pure zig code, without a frame pointer
+    {
+        const exe = b.addExecutable(.{
+            .name = "zig_unwind_nofp",
+            .root_source_file = .{ .path = "zig_unwind.zig" },
+            .target = target,
+            .optimize = optimize,
+        });
+
+        if (target.isDarwin()) exe.unwind_tables = true;
+        exe.omit_frame_pointer = true;
+
+        const run_cmd = b.addRunArtifact(exe);
+        test_step.dependOn(&run_cmd.step);
+    }
+
+    // Unwinding through a C shared library without a frame pointer (libc)
+    {
+        const c_shared_lib = b.addSharedLibrary(.{
+            .name = "c_shared_lib",
+            .target = target,
+            .optimize = optimize,
+        });
+
+        if (target.isWindows()) c_shared_lib.defineCMacro("LIB_API", "__declspec(dllexport)");
+
+        c_shared_lib.strip = false;
+        c_shared_lib.addCSourceFile("shared_lib.c", &.{"-fomit-frame-pointer"});
+        c_shared_lib.linkLibC();
+
+        const exe = b.addExecutable(.{
+            .name = "shared_lib_unwind",
+            .root_source_file = .{ .path = "shared_lib_unwind.zig" },
+            .target = target,
+            .optimize = optimize,
+        });
+
+        if (target.isDarwin()) exe.unwind_tables = true;
+        exe.omit_frame_pointer = true;
+        exe.linkLibrary(c_shared_lib);
+
+        const run_cmd = b.addRunArtifact(exe);
+        test_step.dependOn(&run_cmd.step);
+    }
+}