[glibc/maskray/lld] aarch64: define PI_STATIC_AND_HIDDEN

[glibc/maskray/lld] aarch64: define PI_STATIC_AND_HIDDEN

[Fangrui Song]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2f056e8a5dd4dc0f075413f931e82cede37d1057

commit 2f056e8a5dd4dc0f075413f931e82cede37d1057
Author: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date:   Tue Jan 5 16:10:40 2021 +0000

    aarch64: define PI_STATIC_AND_HIDDEN
    
    AArch64 always uses pc relative access to static and hidden object
    symbols, but the config setting was previously missing.
    
    This affects ld.so start up code.

Diff:
---
 sysdeps/aarch64/configure    | 5 +++++
 sysdeps/aarch64/configure.ac | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/sysdeps/aarch64/configure b/sysdeps/aarch64/configure
index 1f8223725f..5f5f3cc44c 100644
--- a/sysdeps/aarch64/configure
+++ b/sysdeps/aarch64/configure
@@ -1,6 +1,11 @@
 # This file is generated from configure.ac by Autoconf.  DO NOT EDIT!
  # Local configure fragment for sysdeps/aarch64.
 
+# Static and hidden objects are accessed without dynamic relocations.
+# The exception is -mcmodel=large which is unsupported with PIC/PIE.
+$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
+
+
 # We check to see if the compiler and flags are
 # selecting the big endian ABI and if they are then
 # we set libc_cv_aarch64_be to yes which causes
diff --git a/sysdeps/aarch64/configure.ac b/sysdeps/aarch64/configure.ac
index da2a8d81d0..180a16a29f 100644
--- a/sysdeps/aarch64/configure.ac
+++ b/sysdeps/aarch64/configure.ac
@@ -1,6 +1,10 @@
 GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
 # Local configure fragment for sysdeps/aarch64.
 
+# Static and hidden objects are accessed without dynamic relocations.
+# The exception is -mcmodel=large which is unsupported with PIC/PIE.
+AC_DEFINE(PI_STATIC_AND_HIDDEN)
+
 # We check to see if the compiler and flags are
 # selecting the big endian ABI and if they are then
 # we set libc_cv_aarch64_be to yes which causes