Make tls related header files platform accessible.

There are places in frameworks and art code that directly included
private bionic header files. Move these files to the new platform
include files.

This change also moves the __get_tls.h header file to tls.h and includes
the tls defines header so that there is a single header that platform
code can use to get __get_tls and the defines.

Also, simplify the visibility rules for platform includes.

Bug: 141560639

Test: Builds and bionic unit tests pass.
Change-Id: I9e5e9c33fe8a85260f69823468bc9d340ab7a1f9

libc/Android.bp

@@ -1713,32 +1713,19 @@ genrule {
     cmd: "$(location :bionic-generate-version-script) x86_64 $(in) $(out)",
 }
 
-// Makes bionic_tls.h available for art to use in its implementation of Thread::Current().
-cc_library_headers {
-    name: "bionic_libc_private_headers",
-    visibility: [
-        "//art:__subpackages__",
-    ],
-    host_supported: true,
-    export_include_dirs: [
-        "private",
-    ],
-    sdk_version: "current",
-}
-
 // Headers that only other parts of the platform can include.
 cc_library_headers {
     name: "bionic_libc_platform_headers",
     visibility: [
-        "//bionic/libc/malloc_debug:__subpackages__",
-        "//bionic/libc/malloc_hooks:__subpackages__",
-        "//frameworks/av/media/libmedia:__subpackages__",
-        "//frameworks/av/media/utils:__subpackages__",
-        "//frameworks/base/core/jni:__subpackages__",
-        "//frameworks/base/services/core/jni:__subpackages__",
+        "//art:__subpackages__",
+        "//bionic/libc:__subpackages__",
+        "//frameworks:__subpackages__",
         "//external/perfetto:__subpackages__",
+        "//external/scudo:__subpackages__",
     ],
     host_supported: true,
+    recovery_available: true,
+    native_bridge_supported: true,
     export_include_dirs: [
         "platform",
     ],

libc/arch-arm/bionic/vfork.S

@@ -26,8 +26,8 @@
  * SUCH DAMAGE.
  */
 
+#include <platform/bionic/tls_defines.h>
 #include <private/bionic_asm.h>
-#include <private/bionic_asm_tls.h>
 
 ENTRY(vfork)
 __BIONIC_WEAK_ASM_FOR_NATIVE_BRIDGE(vfork)

libc/arch-arm64/bionic/vfork.S

@@ -26,8 +26,8 @@
  * SUCH DAMAGE.
  */
 
+#include <platform/bionic/tls_defines.h>
 #include <private/bionic_asm.h>
-#include <private/bionic_asm_tls.h>
 #include <asm/signal.h>
 #include <linux/sched.h>
 

libc/arch-x86/bionic/vfork.S

@@ -26,8 +26,8 @@
  * SUCH DAMAGE.
  */
 
+#include <platform/bionic/tls_defines.h>
 #include <private/bionic_asm.h>
-#include <private/bionic_asm_tls.h>
 
 // This custom code preserves the return address across the system call.
 

libc/arch-x86_64/bionic/vfork.S

@@ -26,8 +26,8 @@
  * SUCH DAMAGE.
  */
 
+#include <platform/bionic/tls_defines.h>
 #include <private/bionic_asm.h>
-#include <private/bionic_asm_tls.h>
 
 // This custom code preserves the return address across the system call.
 

libc/bionic/ndk_cruft.cpp

@@ -72,7 +72,7 @@ int __open() {
 
 // TODO: does anything still need this?
 void** __get_tls() {
-#include "private/__get_tls.h"
+#include "platform/bionic/tls.h"
   return __get_tls();
 }
 

libc/platform/bionic/tls.h

@@ -26,8 +26,7 @@
  * SUCH DAMAGE.
  */
 
-#ifndef __BIONIC_PRIVATE_GET_TLS_H_
-#define __BIONIC_PRIVATE_GET_TLS_H_
+#pragma once
 
 #if defined(__aarch64__)
 # define __get_tls() ({ void** __val; __asm__("mrs %0, tpidr_el0" : "=r"(__val)); __val; })
@@ -50,4 +49,4 @@
 #error unsupported architecture
 #endif
 
-#endif /* __BIONIC_PRIVATE_GET_TLS_H_ */
+#include "tls_defines.h"

libc/private/bionic_tls.h

@@ -34,9 +34,9 @@
 #include <sys/cdefs.h>
 #include <sys/param.h>
 
-#include "bionic_asm_tls.h"
+#include <platform/bionic/tls.h>
+
 #include "bionic_macros.h"
-#include "__get_tls.h"
 #include "grp_pwd.h"
 
 /** WARNING WARNING WARNING

linker/arch/arm64/tlsdesc_resolver.S

@@ -26,8 +26,8 @@
  * SUCH DAMAGE.
  */
 
+#include <platform/bionic/tls_defines.h>
 #include <private/bionic_asm.h>
-#include <private/bionic_asm_tls.h>
 
 .globl __tls_get_addr
 

tests/__aeabi_read_tp_test.cpp

@@ -28,7 +28,7 @@
 
 #include <gtest/gtest.h>
 
-#include "private/__get_tls.h"
+#include "platform/bionic/tls.h"
 
 #if defined(__arm__)
 extern "C" void* __aeabi_read_tp();

tests/elftls_dl_test.cpp

@@ -33,7 +33,7 @@
 #include <thread>
 
 #include "gtest_globals.h"
-#include "private/__get_tls.h"
+#include "platform/bionic/tls.h"
 #include "utils.h"
 
 #if defined(__BIONIC__)