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elf: test TLS in static programs

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This commit is contained in:
Jakub Konka 2023-09-28 15:13:35 +02:00
parent 785bd270ed
commit 91f2e66bf9
1 changed files with 33 additions and 2 deletions
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35
test/link/elf.zig
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@ -18,7 +18,8 @@ pub fn build(b: *Build) void {
// Exercise linker with LLVM backend
elf_step.dependOn(testEmptyObject(b, .{ .target = musl_target }));
elf_step.dependOn(testLinkingC(b, .{ .target = musl_target }));
elf_step.dependOn(testLinkingZig(b, .{}));
elf_step.dependOn(testLinkingZig(b, .{ .target = musl_target }));
elf_step.dependOn(testTlsStatic(b, .{ .target = musl_target }));
}
fn testEmptyObject(b: *Build, opts: Options) *Step {
@ -91,6 +92,37 @@ fn testLinkingZig(b: *Build, opts: Options) *Step {
return test_step;
}
fn testTlsStatic(b: *Build, opts: Options) *Step {
const test_step = addTestStep(b, "tls-static", opts);
const exe = addExecutable(b, opts);
addCSourceBytes(exe,
\\#include <stdio.h>
\\_Thread_local int a = 10;
\\_Thread_local int b;
\\_Thread_local char c = 'a';
\\int main(int argc, char* argv[]) {
\\ printf("%d %d %c\n", a, b, c);
\\ a += 1;
\\ b += 1;
\\ c += 1;
\\ printf("%d %d %c\n", a, b, c);
\\ return 0;
\\}
);
exe.is_linking_libc = true;
const run = addRunArtifact(exe);
run.expectStdOutEqual(
\\10 0 a
\\11 1 b
\\
);
test_step.dependOn(&run.step);
return test_step;
}
const Options = struct {
target: CrossTarget = .{ .cpu_arch = .x86_64, .os_tag = .linux },
optimize: std.builtin.OptimizeMode = .Debug,
@ -114,7 +146,6 @@ fn addExecutable(b: *Build, opts: Options) *Compile {
.name = "test",
.target = opts.target,
.optimize = opts.optimize,
.single_threaded = true, // TODO temp until we teach linker how to handle TLS
.use_llvm = opts.use_llvm,
.use_lld = false,
});