1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
const std = @import("std");
pub fn build(b: *std.Build) void {
const test_step = b.step("test", "Test");
b.default_step = test_step;
add(b, test_step, .Debug);
add(b, test_step, .ReleaseFast);
}
fn add(b: *std.Build, test_step: *std.Build.Step, optimize_mode: std.builtin.OptimizeMode) void {
const exe = b.addExecutable(.{
.name = "lib",
.root_module = b.createModule(.{
.root_source_file = b.path("lib.zig"),
.target = b.resolveTargetQuery(.{
.cpu_arch = .wasm32,
.cpu_model = .{ .explicit = &std.Target.wasm.cpu.mvp },
.cpu_features_add = std.Target.wasm.featureSet(&.{ .atomics, .bulk_memory }),
.os_tag = .freestanding,
}),
.optimize = optimize_mode,
.strip = false,
.single_threaded = false,
}),
});
exe.entry = .disabled;
exe.use_lld = false;
exe.import_memory = true;
exe.export_memory = true;
exe.shared_memory = true;
exe.max_memory = 67108864;
exe.root_module.export_symbol_names = &.{"foo"};
// Don't pull in ubsan, since we're just expecting a very minimal executable.
exe.bundle_ubsan_rt = false;
const check_exe = exe.checkObject();
check_exe.checkInHeaders();
check_exe.checkExact("Section import");
check_exe.checkExact("entries 1");
check_exe.checkExact("module env");
check_exe.checkExact("name memory"); // ensure we are importing memory
check_exe.checkInHeaders();
check_exe.checkExact("Section export");
check_exe.checkExact("entries 2");
check_exe.checkExact("name foo");
check_exe.checkExact("name memory"); // ensure we also export memory again
// This section *must* be emit as the start function is set to the index
// of __wasm_init_memory
// release modes will have the TLS segment optimized out in our test-case.
// This means we won't have __wasm_init_memory in such case, and therefore
// should also not have a section "start"
if (optimize_mode == .Debug) {
check_exe.checkInHeaders();
check_exe.checkExact("Section start");
}
// This section is only and *must* be emit when shared-memory is enabled
// release modes will have the TLS segment optimized out in our test-case.
if (optimize_mode == .Debug) {
check_exe.checkInHeaders();
check_exe.checkExact("Section data_count");
check_exe.checkExact("count 1");
}
check_exe.checkInHeaders();
check_exe.checkExact("Section custom");
check_exe.checkExact("name name");
check_exe.checkExact("type function");
if (optimize_mode == .Debug) {
check_exe.checkExact("name __wasm_init_memory");
check_exe.checkExact("name __wasm_init_tls");
}
check_exe.checkExact("type global");
// In debug mode the symbol __tls_base is resolved to an undefined symbol
// from the object file, hence its placement differs than in release modes
// where the entire tls segment is optimized away, and tls_base will have
// its original position.
if (optimize_mode == .Debug) {
check_exe.checkExact("name __tls_base");
check_exe.checkExact("name __tls_size");
check_exe.checkExact("name __tls_align");
check_exe.checkExact("type data_segment");
check_exe.checkExact("names 1");
check_exe.checkExact("index 0");
check_exe.checkExact("name .tdata");
} else {
check_exe.checkNotPresent("name __tls_base");
check_exe.checkNotPresent("name __tls_size");
check_exe.checkNotPresent("name __tls_align");
}
test_step.dependOn(&check_exe.step);
}
|
