diff --git a/sysdeps/loongarch/__longjmp.S b/sysdeps/loongarch/__longjmp.S
index 5cc1bc78..fa86f797 100644
--- a/sysdeps/loongarch/__longjmp.S
+++ b/sysdeps/loongarch/__longjmp.S
@@ -20,8 +20,15 @@
 #include <sys/asm.h>

 ENTRY (__longjmp)
+#ifdef PTR_MANGLE
+	REG_L t0, a0, 0*SZREG
+	PTR_DEMANGLE (ra, t0, t1)
+	REG_L t0, a0, 1*SZREG
+	PTR_DEMANGLE2 (sp, t0, t1)
+#else
 	REG_L ra, a0, 0*SZREG
 	REG_L sp, a0, 1*SZREG
+#endif
 	REG_L x,  a0, 2*SZREG
 	REG_L fp, a0, 3*SZREG
 	REG_L s0, a0, 4*SZREG
diff --git a/sysdeps/loongarch/setjmp.S b/sysdeps/loongarch/setjmp.S
index 00ea14b2..6201d0e6 100644
--- a/sysdeps/loongarch/setjmp.S
+++ b/sysdeps/loongarch/setjmp.S
@@ -29,8 +29,15 @@ ENTRY (setjmp)
 END (setjmp)

 ENTRY (__sigsetjmp)
+#ifdef PTR_MANGLE
+	PTR_MANGLE (t0, ra, t1)
+	REG_S t0, a0, 0*SZREG
+	PTR_MANGLE2 (t0, sp, t1)
+	REG_S t0, a0, 1*SZREG
+#else
 	REG_S ra, a0, 0*SZREG
 	REG_S sp, a0, 1*SZREG
+#endif
 	REG_S x,  a0, 2*SZREG
 	REG_S fp, a0, 3*SZREG
 	REG_S s0, a0, 4*SZREG
diff --git a/sysdeps/unix/sysv/linux/loongarch/bits/shmlba.h b/sysdeps/unix/sysv/linux/loongarch/bits/shmlba.h
new file mode 100644
index 00000000..28ff9d5c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/loongarch/bits/shmlba.h
@@ -0,0 +1,24 @@
+/* Define SHMLBA.  LoongArch version.
+   Copyright (C) 2018-2023 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#ifndef _SYS_SHM_H
+# error "Never use <bits/shmlba.h> directly; include <sys/shm.h> instead."
+#endif
+
+/* Segment low boundary address multiple.  */
+#define SHMLBA		0x10000
diff --git a/sysdeps/unix/sysv/linux/loongarch/sysdep.h b/sysdeps/unix/sysv/linux/loongarch/sysdep.h
index b2587091..3f2d691b 100644
--- a/sysdeps/unix/sysv/linux/loongarch/sysdep.h
+++ b/sysdeps/unix/sysv/linux/loongarch/sysdep.h
@@ -313,8 +313,64 @@ extern long int __syscall_error (long int neg_errno);

 #endif /* ! __ASSEMBLER__ */

-/* Pointer mangling is not supported.  */
-#define PTR_MANGLE(var) (void) (var)
-#define PTR_DEMANGLE(var) (void) (var)
+/* Pointer mangling is supported for LoongArch.  */
+
+/* Load a got-relative EXPR into G, using T.
+   Note G and T are register names.  */
+#define LD_GLOBAL(G, EXPR) \
+  la.global G,	EXPR; \
+  REG_L	    G,	G,  0;
+
+/* Load a pc-relative EXPR into G, using T.
+   Note G and T are register names.  */
+#define LD_PCREL(G, EXPR) \
+  la.pcrel  G,	EXPR; \
+  REG_L	    G,	G,  0;
+
+#if (IS_IN (rtld) \
+     || (!defined SHARED && (IS_IN (libc) \
+     || IS_IN (libpthread))))
+
+#ifdef __ASSEMBLER__
+#define PTR_MANGLE(dst, src, guard) \
+  LD_PCREL (guard, __pointer_chk_guard_local); \
+  PTR_MANGLE2 (dst, src, guard);
+#define PTR_DEMANGLE(dst, src, guard) \
+  LD_PCREL (guard, __pointer_chk_guard_local); \
+  PTR_DEMANGLE2 (dst, src, guard);
+/* Use PTR_MANGLE2 for efficiency if guard is already loaded.  */
+#define PTR_MANGLE2(dst, src, guard) \
+  xor  dst, src, guard;
+#define PTR_DEMANGLE2(dst, src, guard) \
+  PTR_MANGLE2 (dst, src, guard);
+#else
+extern uintptr_t __pointer_chk_guard_local attribute_relro attribute_hidden;
+#define PTR_MANGLE(var) \
+  (var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard_local)
+#define PTR_DEMANGLE(var) PTR_MANGLE (var)
+#endif
+
+#else
+
+#ifdef __ASSEMBLER__
+#define PTR_MANGLE(dst, src, guard) \
+  LD_GLOBAL (guard, __pointer_chk_guard); \
+  PTR_MANGLE2 (dst, src, guard);
+#define PTR_DEMANGLE(dst, src, guard) \
+  LD_GLOBAL (guard, __pointer_chk_guard); \
+  PTR_DEMANGLE2 (dst, src, guard);
+/* Use PTR_MANGLE2 for efficiency if guard is already loaded.  */
+#define PTR_MANGLE2(dst, src, guard) \
+  xor dst, src, guard;
+#define PTR_DEMANGLE2(dst, src, guard) \
+  PTR_MANGLE2 (dst, src, guard);
+#else
+extern uintptr_t __pointer_chk_guard attribute_relro;
+#define PTR_MANGLE(var) \
+  (var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard)
+#define PTR_DEMANGLE(var) PTR_MANGLE (var)
+#endif
+
+#endif

 #endif /* linux/loongarch/sysdep.h */
