LoongArch: Sync from glibc upstream

Signed-off-by: ticat_fp <fanpeng@loongson.cn>

LoongArch-Remove-support-code-for-old-linker-in-star.patch

@@ -0,0 +1,56 @@
+From f8d66a269cb6f1a7087afadf3375bdf0553abf53 Mon Sep 17 00:00:00 2001
+From: Xi Ruoyao <xry111@xry111.site>
+Date: Sun, 27 Aug 2023 00:36:50 +0800
+Subject: [PATCH 12/29] LoongArch: Remove support code for old linker in
+ start.S
+
+We are requiring Binutils >= 2.41, so la.pcrel always works here.
+
+Signed-off-by: Xi Ruoyao <xry111@xry111.site>
+Signed-off-by: Peng Fan <fanpeng@loongson.cn>
+Signed-off-by: ticat_fp <fanpeng@loongson.cn>
+---
+ sysdeps/loongarch/start.S | 19 +++----------------
+ 1 file changed, 3 insertions(+), 16 deletions(-)
+
+diff --git a/sysdeps/loongarch/start.S b/sysdeps/loongarch/start.S
+index e9d82033..bf6bfc9e 100644
+--- a/sysdeps/loongarch/start.S
++++ b/sysdeps/loongarch/start.S
+@@ -60,20 +60,7 @@ ENTRY (ENTRY_POINT)
+ 	cfi_undefined (1)
+ 	or		a5, a0, zero /* rtld_fini */
+ 
+-#if ENABLE_STATIC_PIE
+-/* For static PIE, the GOT cannot be used in _start because the GOT entries are
+-   offsets instead of real addresses before __libc_start_main.
+-   __libc_start_main and/or main may be not local, so we rely on the linker to
+-   produce PLT entries for them.  GNU ld >= 2.40 supports this.  */
+-# define LA la.pcrel
+-#else
+-/* Old GNU ld (< 2.40) cannot handle PC relative address against a non-local
+-   function correctly.  We deem these old linkers failing to support static PIE
+-   and load the addresses from GOT.  */
+-# define LA la.got
+-#endif
+-
+-	LA		a0, t0, main
++	la.pcrel	a0, t0, main
+ 	REG_L		a1, sp, 0
+ 	ADDI		a2, sp, SZREG
+ 
+@@ -84,9 +71,9 @@ ENTRY (ENTRY_POINT)
+ 	move		a4, zero /* used to be fini */
+ 	or		a6, sp, zero /* stack_end */
+ 
+-	LA		ra, t0, __libc_start_main
++	la.pcrel	ra, t0, __libc_start_main
+ 	jirl		ra, ra, 0
+ 
+-	LA		ra, t0, abort
++	la.pcrel	ra, t0, abort
+ 	jirl		ra, ra, 0
+ END (ENTRY_POINT)
+-- 
+2.33.0
+