std: Minor changes to TLS handling

* Always allocate an info block per-thread so that libc can store
  important stuff there.
* Respect ABI-mandated alignment in more places.
* Nicer code, use slices/pointers instead of raw addresses whenever
  possible.

1 files changed, 1 insertions, 7 deletions

diff --git a/lib/std/start.zig b/lib/std/start.zig
index 1a4997edbd..fbb8140666 100644
--- a/lib/std/start.zig
+++ b/lib/std/start.zig
@@ -152,13 +152,7 @@ fn posixCallMainAndExit() noreturn {
         const auxv = @ptrCast([*]std.elf.Auxv, @alignCast(@alignOf(usize), envp.ptr + envp_count + 1));
         std.os.linux.elf_aux_maybe = auxv;
         // Initialize the TLS area
-        const gnu_stack_phdr = std.os.linux.tls.initTLS() orelse @panic("ELF missing stack size");
-
-        if (std.os.linux.tls.tls_image) |tls_img| {
-            const tls_addr = std.os.linux.tls.allocateTLS(tls_img.alloc_size);
-            const tp = std.os.linux.tls.copyTLS(tls_addr);
-            std.os.linux.tls.setThreadPointer(tp);
-        }
+        std.os.linux.tls.initStaticTLS();
 
         // TODO This is disabled because what should we do when linking libc and this code
         // does not execute? And also it's causing a test failure in stack traces in release modes.