[v3,15/19] linux-user: Split out pread64, pwrite64

Message ID 20180612005145.3375-16-richard.henderson@linaro.org
State New
Headers show
Series
  • linux-user: Split do_syscall
Related show

Commit Message

Richard Henderson June 12, 2018, 12:51 a.m.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 linux-user/syscall.h           | 44 +++++++++++++++++++++
 linux-user/syscall.c           | 70 ----------------------------------
 linux-user/syscall_file.c      | 61 +++++++++++++++++++++++++++--
 linux-user/gen_syscall_list.py |  2 +
 linux-user/strace.list         |  6 ---
 5 files changed, 104 insertions(+), 79 deletions(-)

-- 
2.17.1

Comments

Philippe Mathieu-Daudé June 12, 2018, 4:37 p.m. | #1
Hi Richard,

On 06/11/2018 09:51 PM, Richard Henderson wrote:
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

> ---

>  linux-user/syscall.h           | 44 +++++++++++++++++++++

>  linux-user/syscall.c           | 70 ----------------------------------

>  linux-user/syscall_file.c      | 61 +++++++++++++++++++++++++++--

>  linux-user/gen_syscall_list.py |  2 +

>  linux-user/strace.list         |  6 ---

>  5 files changed, 104 insertions(+), 79 deletions(-)

> 

> diff --git a/linux-user/syscall.h b/linux-user/syscall.h

> index 3fc49d5b65..a157e25bba 100644

> --- a/linux-user/syscall.h

> +++ b/linux-user/syscall.h

> @@ -174,6 +174,50 @@ struct iovec *lock_iovec(int type, abi_ulong target_addr,

>  void unlock_iovec(struct iovec *vec, abi_ulong target_addr,

>                    abi_ulong count, int copy);

>  

> +/* Returns true if syscall NUM expects 64bit types aligned even

> + * on pairs of registers.

> + */

> +static inline bool regpairs_aligned(void *cpu_env, int num)

> +{

> +#ifdef TARGET_ARM

> +    return ((CPUARMState *)cpu_env)->eabi;

> +#elif defined(TARGET_MIPS) && TARGET_ABI_BITS == 32

> +    return true;

> +#elif defined(TARGET_PPC) && !defined(TARGET_PPC64)

> +    /* SysV AVI for PPC32 expects 64bit parameters to be passed on

> +     * odd/even pairs of registers which translates to the same as

> +     * we start with r3 as arg1

> +     */

> +    return true;

> +#elif defined(TARGET_SH4)

> +    /* SH4 doesn't align register pairs, except for p{read,write}64 */

> +    switch (num) {

> +    case TARGET_NR_pread64:

> +    case TARGET_NR_pwrite64:

> +        return true;

> +    default:

> +        return false;

> +    }

> +#elif defined(TARGET_XTENSA)

> +    return true;

> +#else

> +    return false;

> +#endif

> +}

> +

> +static inline uint64_t target_offset64(abi_ulong word0, abi_ulong word1)

> +{

> +#if TARGET_ABI_BITS == 32

> +# ifdef TARGET_WORDS_BIGENDIAN

> +    return ((uint64_t)word0 << 32) | word1;

> +# else

> +    return ((uint64_t)word1 << 32) | word0;

> +# endif

> +#else

> +    return word0;

> +#endif

> +}

> +

>  /* Temporary declarations from syscall_foo.c back to main syscall.c.

>   * These indicate incomplete conversion.

>   */

> diff --git a/linux-user/syscall.c b/linux-user/syscall.c

> index 381ee9c3a2..cdc9787240 100644

> --- a/linux-user/syscall.c

> +++ b/linux-user/syscall.c

> @@ -642,38 +642,6 @@ static inline int next_free_host_timer(void)

>  }

>  #endif

>  

> -/* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */

> -#ifdef TARGET_ARM

> -static inline int regpairs_aligned(void *cpu_env, int num)

> -{

> -    return ((((CPUARMState *)cpu_env)->eabi) == 1) ;

> -}

> -#elif defined(TARGET_MIPS) && (TARGET_ABI_BITS == 32)

> -static inline int regpairs_aligned(void *cpu_env, int num) { return 1; }

> -#elif defined(TARGET_PPC) && !defined(TARGET_PPC64)

> -/* SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs

> - * of registers which translates to the same as ARM/MIPS, because we start with

> - * r3 as arg1 */

> -static inline int regpairs_aligned(void *cpu_env, int num) { return 1; }

> -#elif defined(TARGET_SH4)

> -/* SH4 doesn't align register pairs, except for p{read,write}64 */

> -static inline int regpairs_aligned(void *cpu_env, int num)

> -{

> -    switch (num) {

> -    case TARGET_NR_pread64:

> -    case TARGET_NR_pwrite64:

> -        return 1;

> -

> -    default:

> -        return 0;

> -    }

> -}

> -#elif defined(TARGET_XTENSA)

> -static inline int regpairs_aligned(void *cpu_env, int num) { return 1; }

> -#else

> -static inline int regpairs_aligned(void *cpu_env, int num) { return 0; }

> -#endif

> -

>  #define ERRNO_TABLE_SIZE 1200

>  

>  /* target_to_host_errno_table[] is initialized from

> @@ -6864,22 +6832,6 @@ void syscall_init(void)

>      }

>  }

>  

> -#if TARGET_ABI_BITS == 32

> -static inline uint64_t target_offset64(uint32_t word0, uint32_t word1)

> -{

> -#ifdef TARGET_WORDS_BIGENDIAN

> -    return ((uint64_t)word0 << 32) | word1;

> -#else

> -    return ((uint64_t)word1 << 32) | word0;

> -#endif

> -}

> -#else /* TARGET_ABI_BITS == 32 */

> -static inline uint64_t target_offset64(uint64_t word0, uint64_t word1)

> -{

> -    return word0;

> -}

> -#endif /* TARGET_ABI_BITS != 32 */

> -

>  #ifdef TARGET_NR_truncate64

>  static inline abi_long target_truncate64(void *cpu_env, const char *arg1,

>                                           abi_long arg2,

> @@ -10078,28 +10030,6 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,

>  #else

>  #error unreachable

>  #endif

> -#endif

> -#ifdef TARGET_NR_pread64

> -    case TARGET_NR_pread64:

> -        if (regpairs_aligned(cpu_env, num)) {

> -            arg4 = arg5;

> -            arg5 = arg6;

> -        }

> -        if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))

> -            return -TARGET_EFAULT;

> -        ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5)));

> -        unlock_user(p, arg2, ret);

> -        return ret;

> -    case TARGET_NR_pwrite64:

> -        if (regpairs_aligned(cpu_env, num)) {

> -            arg4 = arg5;

> -            arg5 = arg6;

> -        }

> -        if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))

> -            return -TARGET_EFAULT;

> -        ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5)));

> -        unlock_user(p, arg2, 0);

> -        return ret;

>  #endif

>      case TARGET_NR_getcwd:

>          if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0)))

> diff --git a/linux-user/syscall_file.c b/linux-user/syscall_file.c

> index 4cc7051847..aae9c49599 100644

> --- a/linux-user/syscall_file.c

> +++ b/linux-user/syscall_file.c

> @@ -378,15 +378,70 @@ SYSCALL_IMPL(openat)

>  }

>  SYSCALL_DEF(openat, ARG_ATDIRFD, ARG_STR, ARG_OPENFLAG, ARG_MODEFLAG);

>  

> +/* Both pread64 and pwrite64 merge args into a 64-bit offset,

> + * but the input registers and ordering are target specific.

> + */

> +#if TARGET_ABI_BITS == 32

> +SYSCALL_ARGS(pread64_pwrite64)

> +{

> +    /* We have already assigned out[0-2].  */

> +    int off = regpairs_aligned(cpu_env, TARGET_NR_pread64);

> +    out[3] = target_offset64(in[3 + off], in[4 + off]);

> +    return def;

> +}

> +#else

> +#define args_pread64_pwrite64 NULL

> +#endif

> +

> +SYSCALL_IMPL(pread64)

> +{

> +    void *p = lock_user(VERIFY_WRITE, arg2, arg3, 0);

> +    abi_long ret;

> +

> +    if (!p) {

> +        return -TARGET_EFAULT;

> +    }

> +    ret = get_errno(pread64(arg1, p, arg3, arg4));

> +    unlock_user(p, arg2, ret);

> +    return ret;

> +}

> +

> +const SyscallDef def_pread64 = {

> +    .name = "pread64",

> +    .args = args_pread64_pwrite64,

> +    .impl = impl_pread64,

> +    .arg_type = { ARG_DEC, ARG_PTR, ARG_DEC, ARG_DEC64 }

> +};

> +

> +SYSCALL_IMPL(pwrite64)

> +{

> +    void *p = lock_user(VERIFY_READ, arg2, arg3, 0);

> +    abi_long ret;

> +

> +    if (!p) {

> +        return -TARGET_EFAULT;

> +    }

> +    ret = get_errno(pwrite64(arg1, p, arg3, arg4));

> +    unlock_user(p, arg2, 0);

> +    return ret;

> +}

> +

> +const SyscallDef def_pwrite64 = {

> +    .name = "pwrite64",

> +    .args = args_pread64_pwrite64,

> +    .impl = impl_pwrite64,

> +    .arg_type = { ARG_DEC, ARG_PTR, ARG_DEC, ARG_DEC64 }

> +};

> +

>  /* Both preadv and pwritev merge args 4/5 into a 64-bit offset.

>   * Moreover, the parts are *always* in little-endian order.

>   */

>  #if TARGET_ABI_BITS == 32

>  SYSCALL_ARGS(preadv_pwritev)

>  {

> -    /* We have already assigned out[0-3].  */

> -    abi_ulong lo = in[4], hi = in[5];

> -    out[4] = ((hi << (TARGET_ABI_BITS - 1)) << 1) | lo;

> +    /* We have already assigned out[0-2].  */

> +    abi_ulong lo = in[3], hi = in[4];

> +    out[3] = ((hi << (TARGET_ABI_BITS - 1)) << 1) | lo;


Why this change? If correct, can you update the comment?
Also this seems related to your previous patch #14: "Split out preadv,
pwritev, readv, writev", not this one.

>      return def;

>  }

>  #else

> diff --git a/linux-user/gen_syscall_list.py b/linux-user/gen_syscall_list.py

> index ce6dca742c..7481d030ee 100644

> --- a/linux-user/gen_syscall_list.py

> +++ b/linux-user/gen_syscall_list.py

> @@ -27,7 +27,9 @@ import sys

>  unconditional_syscalls = [

>      "close",

>      "openat",

> +    "pread64",

>      "preadv",

> +    "pwrite64",

>      "pwritev",

>      "read",

>      "readv",

> diff --git a/linux-user/strace.list b/linux-user/strace.list

> index d5ee55ac82..d978cefa31 100644

> --- a/linux-user/strace.list

> +++ b/linux-user/strace.list

> @@ -1025,9 +1025,6 @@

>  #ifdef TARGET_NR_prctl

>  { TARGET_NR_prctl, "prctl" , NULL, NULL, NULL },

>  #endif

> -#ifdef TARGET_NR_pread64

> -{ TARGET_NR_pread64, "pread64" , NULL, NULL, NULL },

> -#endif

>  #ifdef TARGET_NR_prlimit64

>  { TARGET_NR_prlimit64, "prlimit64" , NULL, NULL, NULL },

>  #endif

> @@ -1052,9 +1049,6 @@

>  #ifdef TARGET_NR_putpmsg

>  { TARGET_NR_putpmsg, "putpmsg" , NULL, NULL, NULL },

>  #endif

> -#ifdef TARGET_NR_pwrite64

> -{ TARGET_NR_pwrite64, "pwrite64" , NULL, NULL, NULL },

> -#endif

>  #ifdef TARGET_NR_query_module

>  { TARGET_NR_query_module, "query_module" , NULL, NULL, NULL },

>  #endif

>
Richard Henderson June 12, 2018, 5:44 p.m. | #2
On 06/12/2018 06:37 AM, Philippe Mathieu-Daudé wrote:
>>  /* Both preadv and pwritev merge args 4/5 into a 64-bit offset.

>>   * Moreover, the parts are *always* in little-endian order.

>>   */

>>  #if TARGET_ABI_BITS == 32

>>  SYSCALL_ARGS(preadv_pwritev)

>>  {

>> -    /* We have already assigned out[0-3].  */

>> -    abi_ulong lo = in[4], hi = in[5];

>> -    out[4] = ((hi << (TARGET_ABI_BITS - 1)) << 1) | lo;

>> +    /* We have already assigned out[0-2].  */

>> +    abi_ulong lo = in[3], hi = in[4];

>> +    out[3] = ((hi << (TARGET_ABI_BITS - 1)) << 1) | lo;

> Why this change? If correct, can you update the comment?

> Also this seems related to your previous patch #14: "Split out preadv,

> pwritev, readv, writev", not this one.

> 


You're right, this hunk should be folded back into the previous patch.


r~
Philippe Mathieu-Daudé June 12, 2018, 7:02 p.m. | #3
On 06/12/2018 02:44 PM, Richard Henderson wrote:
> On 06/12/2018 06:37 AM, Philippe Mathieu-Daudé wrote:

>>>  /* Both preadv and pwritev merge args 4/5 into a 64-bit offset.

>>>   * Moreover, the parts are *always* in little-endian order.

>>>   */

>>>  #if TARGET_ABI_BITS == 32

>>>  SYSCALL_ARGS(preadv_pwritev)

>>>  {

>>> -    /* We have already assigned out[0-3].  */

>>> -    abi_ulong lo = in[4], hi = in[5];

>>> -    out[4] = ((hi << (TARGET_ABI_BITS - 1)) << 1) | lo;

>>> +    /* We have already assigned out[0-2].  */

>>> +    abi_ulong lo = in[3], hi = in[4];

>>> +    out[3] = ((hi << (TARGET_ABI_BITS - 1)) << 1) | lo;

>> Why this change? If correct, can you update the comment?

>> Also this seems related to your previous patch #14: "Split out preadv,

>> pwritev, readv, writev", not this one.

>>

> 

> You're right, this hunk should be folded back into the previous patch.


So for this patch without this hunk:
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Patch

diff --git a/linux-user/syscall.h b/linux-user/syscall.h
index 3fc49d5b65..a157e25bba 100644
--- a/linux-user/syscall.h
+++ b/linux-user/syscall.h
@@ -174,6 +174,50 @@  struct iovec *lock_iovec(int type, abi_ulong target_addr,
 void unlock_iovec(struct iovec *vec, abi_ulong target_addr,
                   abi_ulong count, int copy);
 
+/* Returns true if syscall NUM expects 64bit types aligned even
+ * on pairs of registers.
+ */
+static inline bool regpairs_aligned(void *cpu_env, int num)
+{
+#ifdef TARGET_ARM
+    return ((CPUARMState *)cpu_env)->eabi;
+#elif defined(TARGET_MIPS) && TARGET_ABI_BITS == 32
+    return true;
+#elif defined(TARGET_PPC) && !defined(TARGET_PPC64)
+    /* SysV AVI for PPC32 expects 64bit parameters to be passed on
+     * odd/even pairs of registers which translates to the same as
+     * we start with r3 as arg1
+     */
+    return true;
+#elif defined(TARGET_SH4)
+    /* SH4 doesn't align register pairs, except for p{read,write}64 */
+    switch (num) {
+    case TARGET_NR_pread64:
+    case TARGET_NR_pwrite64:
+        return true;
+    default:
+        return false;
+    }
+#elif defined(TARGET_XTENSA)
+    return true;
+#else
+    return false;
+#endif
+}
+
+static inline uint64_t target_offset64(abi_ulong word0, abi_ulong word1)
+{
+#if TARGET_ABI_BITS == 32
+# ifdef TARGET_WORDS_BIGENDIAN
+    return ((uint64_t)word0 << 32) | word1;
+# else
+    return ((uint64_t)word1 << 32) | word0;
+# endif
+#else
+    return word0;
+#endif
+}
+
 /* Temporary declarations from syscall_foo.c back to main syscall.c.
  * These indicate incomplete conversion.
  */
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 381ee9c3a2..cdc9787240 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -642,38 +642,6 @@  static inline int next_free_host_timer(void)
 }
 #endif
 
-/* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */
-#ifdef TARGET_ARM
-static inline int regpairs_aligned(void *cpu_env, int num)
-{
-    return ((((CPUARMState *)cpu_env)->eabi) == 1) ;
-}
-#elif defined(TARGET_MIPS) && (TARGET_ABI_BITS == 32)
-static inline int regpairs_aligned(void *cpu_env, int num) { return 1; }
-#elif defined(TARGET_PPC) && !defined(TARGET_PPC64)
-/* SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs
- * of registers which translates to the same as ARM/MIPS, because we start with
- * r3 as arg1 */
-static inline int regpairs_aligned(void *cpu_env, int num) { return 1; }
-#elif defined(TARGET_SH4)
-/* SH4 doesn't align register pairs, except for p{read,write}64 */
-static inline int regpairs_aligned(void *cpu_env, int num)
-{
-    switch (num) {
-    case TARGET_NR_pread64:
-    case TARGET_NR_pwrite64:
-        return 1;
-
-    default:
-        return 0;
-    }
-}
-#elif defined(TARGET_XTENSA)
-static inline int regpairs_aligned(void *cpu_env, int num) { return 1; }
-#else
-static inline int regpairs_aligned(void *cpu_env, int num) { return 0; }
-#endif
-
 #define ERRNO_TABLE_SIZE 1200
 
 /* target_to_host_errno_table[] is initialized from
@@ -6864,22 +6832,6 @@  void syscall_init(void)
     }
 }
 
-#if TARGET_ABI_BITS == 32
-static inline uint64_t target_offset64(uint32_t word0, uint32_t word1)
-{
-#ifdef TARGET_WORDS_BIGENDIAN
-    return ((uint64_t)word0 << 32) | word1;
-#else
-    return ((uint64_t)word1 << 32) | word0;
-#endif
-}
-#else /* TARGET_ABI_BITS == 32 */
-static inline uint64_t target_offset64(uint64_t word0, uint64_t word1)
-{
-    return word0;
-}
-#endif /* TARGET_ABI_BITS != 32 */
-
 #ifdef TARGET_NR_truncate64
 static inline abi_long target_truncate64(void *cpu_env, const char *arg1,
                                          abi_long arg2,
@@ -10078,28 +10030,6 @@  static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
 #else
 #error unreachable
 #endif
-#endif
-#ifdef TARGET_NR_pread64
-    case TARGET_NR_pread64:
-        if (regpairs_aligned(cpu_env, num)) {
-            arg4 = arg5;
-            arg5 = arg6;
-        }
-        if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0)))
-            return -TARGET_EFAULT;
-        ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5)));
-        unlock_user(p, arg2, ret);
-        return ret;
-    case TARGET_NR_pwrite64:
-        if (regpairs_aligned(cpu_env, num)) {
-            arg4 = arg5;
-            arg5 = arg6;
-        }
-        if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1)))
-            return -TARGET_EFAULT;
-        ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5)));
-        unlock_user(p, arg2, 0);
-        return ret;
 #endif
     case TARGET_NR_getcwd:
         if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0)))
diff --git a/linux-user/syscall_file.c b/linux-user/syscall_file.c
index 4cc7051847..aae9c49599 100644
--- a/linux-user/syscall_file.c
+++ b/linux-user/syscall_file.c
@@ -378,15 +378,70 @@  SYSCALL_IMPL(openat)
 }
 SYSCALL_DEF(openat, ARG_ATDIRFD, ARG_STR, ARG_OPENFLAG, ARG_MODEFLAG);
 
+/* Both pread64 and pwrite64 merge args into a 64-bit offset,
+ * but the input registers and ordering are target specific.
+ */
+#if TARGET_ABI_BITS == 32
+SYSCALL_ARGS(pread64_pwrite64)
+{
+    /* We have already assigned out[0-2].  */
+    int off = regpairs_aligned(cpu_env, TARGET_NR_pread64);
+    out[3] = target_offset64(in[3 + off], in[4 + off]);
+    return def;
+}
+#else
+#define args_pread64_pwrite64 NULL
+#endif
+
+SYSCALL_IMPL(pread64)
+{
+    void *p = lock_user(VERIFY_WRITE, arg2, arg3, 0);
+    abi_long ret;
+
+    if (!p) {
+        return -TARGET_EFAULT;
+    }
+    ret = get_errno(pread64(arg1, p, arg3, arg4));
+    unlock_user(p, arg2, ret);
+    return ret;
+}
+
+const SyscallDef def_pread64 = {
+    .name = "pread64",
+    .args = args_pread64_pwrite64,
+    .impl = impl_pread64,
+    .arg_type = { ARG_DEC, ARG_PTR, ARG_DEC, ARG_DEC64 }
+};
+
+SYSCALL_IMPL(pwrite64)
+{
+    void *p = lock_user(VERIFY_READ, arg2, arg3, 0);
+    abi_long ret;
+
+    if (!p) {
+        return -TARGET_EFAULT;
+    }
+    ret = get_errno(pwrite64(arg1, p, arg3, arg4));
+    unlock_user(p, arg2, 0);
+    return ret;
+}
+
+const SyscallDef def_pwrite64 = {
+    .name = "pwrite64",
+    .args = args_pread64_pwrite64,
+    .impl = impl_pwrite64,
+    .arg_type = { ARG_DEC, ARG_PTR, ARG_DEC, ARG_DEC64 }
+};
+
 /* Both preadv and pwritev merge args 4/5 into a 64-bit offset.
  * Moreover, the parts are *always* in little-endian order.
  */
 #if TARGET_ABI_BITS == 32
 SYSCALL_ARGS(preadv_pwritev)
 {
-    /* We have already assigned out[0-3].  */
-    abi_ulong lo = in[4], hi = in[5];
-    out[4] = ((hi << (TARGET_ABI_BITS - 1)) << 1) | lo;
+    /* We have already assigned out[0-2].  */
+    abi_ulong lo = in[3], hi = in[4];
+    out[3] = ((hi << (TARGET_ABI_BITS - 1)) << 1) | lo;
     return def;
 }
 #else
diff --git a/linux-user/gen_syscall_list.py b/linux-user/gen_syscall_list.py
index ce6dca742c..7481d030ee 100644
--- a/linux-user/gen_syscall_list.py
+++ b/linux-user/gen_syscall_list.py
@@ -27,7 +27,9 @@  import sys
 unconditional_syscalls = [
     "close",
     "openat",
+    "pread64",
     "preadv",
+    "pwrite64",
     "pwritev",
     "read",
     "readv",
diff --git a/linux-user/strace.list b/linux-user/strace.list
index d5ee55ac82..d978cefa31 100644
--- a/linux-user/strace.list
+++ b/linux-user/strace.list
@@ -1025,9 +1025,6 @@ 
 #ifdef TARGET_NR_prctl
 { TARGET_NR_prctl, "prctl" , NULL, NULL, NULL },
 #endif
-#ifdef TARGET_NR_pread64
-{ TARGET_NR_pread64, "pread64" , NULL, NULL, NULL },
-#endif
 #ifdef TARGET_NR_prlimit64
 { TARGET_NR_prlimit64, "prlimit64" , NULL, NULL, NULL },
 #endif
@@ -1052,9 +1049,6 @@ 
 #ifdef TARGET_NR_putpmsg
 { TARGET_NR_putpmsg, "putpmsg" , NULL, NULL, NULL },
 #endif
-#ifdef TARGET_NR_pwrite64
-{ TARGET_NR_pwrite64, "pwrite64" , NULL, NULL, NULL },
-#endif
 #ifdef TARGET_NR_query_module
 { TARGET_NR_query_module, "query_module" , NULL, NULL, NULL },
 #endif