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diff --git a/gc-7.2/libatomic_ops/src/atomic_ops/sysdeps/hpc/ia64.h b/gc-7.2/libatomic_ops/src/atomic_ops/sysdeps/hpc/ia64.h
new file mode 100644
index 0000000..3c538fd
--- /dev/null
+++ b/gc-7.2/libatomic_ops/src/atomic_ops/sysdeps/hpc/ia64.h
@@ -0,0 +1,166 @@
+/*
+ * Copyright (c) 2003 Hewlett-Packard Development Company, L.P.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+/*
+ * This file specifies Itanimum primitives for use with the HP compiler
+ * under HP/UX.  We use intrinsics instead of the inline assembly code in the
+ * gcc file.
+ */
+
+#include "../all_atomic_load_store.h"
+
+#include "../all_acquire_release_volatile.h"
+
+#include "../test_and_set_t_is_char.h"
+
+#include <machine/sys/inline.h>
+
+#ifdef __LP64__
+# define AO_T_FASIZE _FASZ_D
+# define AO_T_SIZE _SZ_D
+#else
+# define AO_T_FASIZE _FASZ_W
+# define AO_T_SIZE _SZ_W
+#endif
+
+AO_INLINE void
+AO_nop_full(void)
+{
+  _Asm_mf();
+}
+#define AO_HAVE_nop_full
+
+AO_INLINE AO_t
+AO_fetch_and_add1_acquire (volatile AO_t *p)
+{
+  return _Asm_fetchadd(AO_T_FASIZE, _SEM_ACQ, p, 1,
+                       _LDHINT_NONE, _DOWN_MEM_FENCE);
+}
+#define AO_HAVE_fetch_and_add1_acquire
+
+AO_INLINE AO_t
+AO_fetch_and_add1_release (volatile AO_t *p)
+{
+  return _Asm_fetchadd(AO_T_FASIZE, _SEM_REL, p, 1,
+                       _LDHINT_NONE, _UP_MEM_FENCE);
+}
+#define AO_HAVE_fetch_and_add1_release
+
+AO_INLINE AO_t
+AO_fetch_and_sub1_acquire (volatile AO_t *p)
+{
+  return _Asm_fetchadd(AO_T_FASIZE, _SEM_ACQ, p, -1,
+                       _LDHINT_NONE, _DOWN_MEM_FENCE);
+}
+#define AO_HAVE_fetch_and_sub1_acquire
+
+AO_INLINE AO_t
+AO_fetch_and_sub1_release (volatile AO_t *p)
+{
+  return _Asm_fetchadd(AO_T_FASIZE, _SEM_REL, p, -1,
+                       _LDHINT_NONE, _UP_MEM_FENCE);
+}
+#define AO_HAVE_fetch_and_sub1_release
+
+AO_INLINE int
+AO_compare_and_swap_acquire(volatile AO_t *addr,
+                             AO_t old, AO_t new_val)
+{
+  AO_t oldval;
+
+  _Asm_mov_to_ar(_AREG_CCV, old, _DOWN_MEM_FENCE);
+  oldval = _Asm_cmpxchg(AO_T_SIZE, _SEM_ACQ, addr,
+                        new_val, _LDHINT_NONE, _DOWN_MEM_FENCE);
+  return (oldval == old);
+}
+#define AO_HAVE_compare_and_swap_acquire
+
+AO_INLINE int
+AO_compare_and_swap_release(volatile AO_t *addr,
+                             AO_t old, AO_t new_val)
+{
+  AO_t oldval;
+  _Asm_mov_to_ar(_AREG_CCV, old, _UP_MEM_FENCE);
+  oldval = _Asm_cmpxchg(AO_T_SIZE, _SEM_REL, addr,
+                        new_val, _LDHINT_NONE, _UP_MEM_FENCE);
+  /* Hopefully the compiler knows not to reorder the above two? */
+  return (oldval == old);
+}
+#define AO_HAVE_compare_and_swap_release
+
+AO_INLINE int
+AO_char_compare_and_swap_acquire(volatile unsigned char *addr,
+                                 unsigned char old, unsigned char new_val)
+{
+  unsigned char oldval;
+
+  _Asm_mov_to_ar(_AREG_CCV, old, _DOWN_MEM_FENCE);
+  oldval = _Asm_cmpxchg(_SZ_B, _SEM_ACQ, addr,
+                        new_val, _LDHINT_NONE, _DOWN_MEM_FENCE);
+  return (oldval == old);
+}
+#define AO_HAVE_char_compare_and_swap_acquire
+
+AO_INLINE int
+AO_char_compare_and_swap_release(volatile unsigned char *addr,
+                                 unsigned char old, unsigned char new_val)
+{
+  unsigned char oldval;
+  _Asm_mov_to_ar(_AREG_CCV, old, _UP_MEM_FENCE);
+  oldval = _Asm_cmpxchg(_SZ_B, _SEM_REL, addr,
+                        new_val, _LDHINT_NONE, _UP_MEM_FENCE);
+  /* Hopefully the compiler knows not to reorder the above two? */
+  return (oldval == old);
+}
+#define AO_HAVE_char_compare_and_swap_release
+
+AO_INLINE int
+AO_short_compare_and_swap_acquire(volatile unsigned short *addr,
+                                 unsigned short old, unsigned short new_val)
+{
+  unsigned short oldval;
+
+  _Asm_mov_to_ar(_AREG_CCV, old, _DOWN_MEM_FENCE);
+  oldval = _Asm_cmpxchg(_SZ_B, _SEM_ACQ, addr,
+                        new_val, _LDHINT_NONE, _DOWN_MEM_FENCE);
+  return (oldval == old);
+}
+#define AO_HAVE_short_compare_and_swap_acquire
+
+AO_INLINE int
+AO_short_compare_and_swap_release(volatile unsigned short *addr,
+                                 unsigned short old, unsigned short new_val)
+{
+  unsigned short oldval;
+  _Asm_mov_to_ar(_AREG_CCV, old, _UP_MEM_FENCE);
+  oldval = _Asm_cmpxchg(_SZ_B, _SEM_REL, addr,
+                        new_val, _LDHINT_NONE, _UP_MEM_FENCE);
+  /* Hopefully the compiler knows not to reorder the above two? */
+  return (oldval == old);
+}
+#define AO_HAVE_short_compare_and_swap_release
+
+#ifndef __LP64__
+  /* Generalize first to define more AO_int_... primitives.     */
+# include "../../generalize.h"
+# include "../ao_t_is_int.h"
+#endif