diff --git a/linux-user/sparc/target_structs.h b/linux-user/sparc/target_structs.h
index 9953540759..beeace8fb2 100644
--- a/linux-user/sparc/target_structs.h
+++ b/linux-user/sparc/target_structs.h
@@ -26,13 +26,10 @@ struct target_ipc_perm {
     abi_uint cuid;                      /* Creator's user ID.  */
     abi_uint cgid;                      /* Creator's group ID.  */
 #if TARGET_ABI_BITS == 32
-    abi_ushort __pad1;
-    abi_ushort mode;                    /* Read/write permission.  */
-    abi_ushort __pad2;
-#else
-    abi_ushort mode;
-    abi_ushort __pad1;
+    abi_ushort __pad0;
 #endif
+    abi_ushort mode;                    /* Read/write permission.  */
+    abi_ushort __pad1;
     abi_ushort __seq;                   /* Sequence number.  */
     uint64_t __unused1;
     uint64_t __unused2;
@@ -40,22 +37,17 @@ struct target_ipc_perm {
 
 struct target_shmid_ds {
     struct target_ipc_perm shm_perm;    /* operation permission struct */
-#if TARGET_ABI_BITS == 32
-    abi_uint __pad1;
-#endif
-    abi_ulong shm_atime;                /* time of last shmat() */
-#if TARGET_ABI_BITS == 32
-    abi_uint __pad2;
-#endif
-    abi_ulong shm_dtime;                /* time of last shmdt() */
-#if TARGET_ABI_BITS == 32
-    abi_uint __pad3;
-#endif
-    abi_ulong shm_ctime;                /* time of last change by shmctl() */
-    abi_long shm_segsz;                 /* size of segment in bytes */
-    abi_ulong shm_cpid;                 /* pid of creator */
-    abi_ulong shm_lpid;                 /* pid of last shmop */
-    abi_long shm_nattch;                /* number of current attaches */
+    /*
+     * Note that sparc32 splits these into hi/lo parts.
+     * For simplicity in qemu, always use a 64-bit type.
+     */
+    int64_t  shm_atime;                 /* last attach time */
+    int64_t  shm_dtime;                 /* last detach time */
+    int64_t  shm_ctime;                 /* last change time */
+    abi_ulong shm_segsz;                /* size of segment in bytes */
+    abi_int shm_cpid;                   /* pid of creator */
+    abi_int shm_lpid;                   /* pid of last shmop */
+    abi_ulong shm_nattch;               /* number of current attaches */
     abi_ulong __unused1;
     abi_ulong __unused2;
 };
diff --git a/linux-user/sparc64/target_structs.h b/linux-user/sparc64/target_structs.h
index 4a8ed48df7..cbcbc4602a 100644
--- a/linux-user/sparc64/target_structs.h
+++ b/linux-user/sparc64/target_structs.h
@@ -1,58 +1 @@
-/*
- * SPARC64 specific structures for linux-user
- *
- * Copyright (c) 2013 Fabrice Bellard
- *
- * This 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.
- *
- * This 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 this library; if not, see <http://www.gnu.org/licenses/>.
- */
-#ifndef SPARC64_TARGET_STRUCTS_H
-#define SPARC64_TARGET_STRUCTS_H
-
-struct target_ipc_perm {
-    abi_int __key;                      /* Key.  */
-    abi_uint uid;                       /* Owner's user ID.  */
-    abi_uint gid;                       /* Owner's group ID.  */
-    abi_uint cuid;                      /* Creator's user ID.  */
-    abi_uint cgid;                      /* Creator's group ID.  */
-    abi_ushort mode;                    /* Read/write permission.  */
-    abi_ushort __pad1;
-    abi_ushort __seq;                   /* Sequence number.  */
-    abi_ushort __pad2;
-    abi_ulong __unused1;
-    abi_ulong __unused2;
-};
-
-struct target_shmid_ds {
-    struct target_ipc_perm shm_perm;    /* operation permission struct */
-    abi_long shm_segsz;                 /* size of segment in bytes */
-    abi_ulong shm_atime;                /* time of last shmat() */
-#if TARGET_ABI_BITS == 32
-    abi_ulong __unused1;
-#endif
-    abi_ulong shm_dtime;                /* time of last shmdt() */
-#if TARGET_ABI_BITS == 32
-    abi_ulong __unused2;
-#endif
-    abi_ulong shm_ctime;                /* time of last change by shmctl() */
-#if TARGET_ABI_BITS == 32
-    abi_ulong __unused3;
-#endif
-    abi_int shm_cpid;                   /* pid of creator */
-    abi_int shm_lpid;                   /* pid of last shmop */
-    abi_ulong shm_nattch;               /* number of current attaches */
-    abi_ulong __unused4;
-    abi_ulong __unused5;
-};
-
-#endif
+#include "../sparc/target_structs.h"