[06/15] mips64: Consolidate Linux sysdep.h

Message ID 20200210192038.23588-6-adhemerval.zanella@linaro.org
State New
Headers show
Series
  • [01/15] powerpc: Consolidate Linux syscall definition
Related show

Commit Message

Adhemerval Zanella Feb. 10, 2020, 7:20 p.m.
The mips64 Linux syscall macros only differs argument type and
the requirement of zero-extending values on n32.  The headers
are consolidate by parameterizing the arguments with a new type,
__syscall_arg_t, and by defining the ARGIFY for n64.

Also, the generic unix mips64 sysdep is essentially the same,
only the load instruction need to be adjusted depending of the
ABI.

Checked on mips64-linux-gnu and mips64n32-linux-gnu.
---
 sysdeps/unix/mips/mips64/n64/sysdep.h         |  64 ----
 sysdeps/unix/mips/mips64/{n32 => }/sysdep.h   |   3 +-
 .../unix/sysv/linux/mips/mips64/n64/sysdep.h  | 307 ------------------
 .../sysv/linux/mips/mips64/{n32 => }/sysdep.h |  88 ++---
 4 files changed, 49 insertions(+), 413 deletions(-)
 delete mode 100644 sysdeps/unix/mips/mips64/n64/sysdep.h
 rename sysdeps/unix/mips/mips64/{n32 => }/sysdep.h (97%)
 delete mode 100644 sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h
 rename sysdeps/unix/sysv/linux/mips/mips64/{n32 => }/sysdep.h (76%)

-- 
2.17.1

Comments

Joseph Myers Feb. 10, 2020, 10:48 p.m. | #1
On Mon, 10 Feb 2020, Adhemerval Zanella wrote:

> The mips64 Linux syscall macros only differs argument type and

> the requirement of zero-extending values on n32.  The headers


It's sign-extension, not zero-extension (because that's the 
architecturally-defined rule for how 32-bit values must be represented in 
64-bit registers for 32-bit instructions to work correctly - though 
current Linux kernels ensure syscall arguments are properly extended 
before they reach any C functions in the kernel).

-- 
Joseph S. Myers
joseph@codesourcery.com
Adhemerval Zanella Feb. 11, 2020, 7:05 p.m. | #2
On 10/02/2020 19:48, Joseph Myers wrote:
> On Mon, 10 Feb 2020, Adhemerval Zanella wrote:

> 

>> The mips64 Linux syscall macros only differs argument type and

>> the requirement of zero-extending values on n32.  The headers

> 

> It's sign-extension, not zero-extension (because that's the 

> architecturally-defined rule for how 32-bit values must be represented in 

> 64-bit registers for 32-bit instructions to work correctly - though 

> current Linux kernels ensure syscall arguments are properly extended 

> before they reach any C functions in the kernel).

> 


Thanks, I corrected the patch description.

Patch

diff --git a/sysdeps/unix/mips/mips64/n64/sysdep.h b/sysdeps/unix/mips/mips64/n64/sysdep.h
deleted file mode 100644
index 3d8b254017..0000000000
--- a/sysdeps/unix/mips/mips64/n64/sysdep.h
+++ /dev/null
@@ -1,64 +0,0 @@ 
-/* Copyright (C) 1992-2020 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Alexandre Oliva <aoliva@redhat.com>.
-
-   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/>.  */
-
-#include <sysdeps/unix/mips/sysdep.h>
-
-#ifdef __ASSEMBLER__
-
-/* Note that while it's better structurally, going back to call __syscall_error
-   can make things confusing if you're debugging---it looks like it's jumping
-   backwards into the previous fn.  */
-#ifdef __PIC__
-#define PSEUDO(name, syscall_name, args) \
-  .align 2;								      \
-  .set nomips16;							      \
-  cfi_startproc;							      \
-  99:;									      \
-  .set noat;								      \
-  .cpsetup t9, $1, name;						      \
-  cfi_register (gp, $1);						      \
-  .set at;								      \
-  dla t9,__syscall_error;						      \
-  .cpreturn;								      \
-  cfi_restore (gp);							      \
-  jr t9;								      \
-  cfi_endproc;								      \
-  ENTRY(name)								      \
-  li v0, SYS_ify(syscall_name);						      \
-  syscall;								      \
-  bne a3, zero, 99b;							      \
-L(syse1):
-#else
-#define PSEUDO(name, syscall_name, args) \
-  .set noreorder;							      \
-  .align 2;								      \
-  .set nomips16;							      \
-  cfi_startproc;							      \
-  99: j __syscall_error;						      \
-  nop;                                                                        \
-  cfi_endproc;								      \
-  ENTRY(name)								      \
-  .set noreorder;							      \
-  li v0, SYS_ify(syscall_name);						      \
-  syscall;								      \
-  .set reorder;								      \
-  bne a3, zero, 99b;							      \
-L(syse1):
-#endif
-
-#endif
diff --git a/sysdeps/unix/mips/mips64/n32/sysdep.h b/sysdeps/unix/mips/mips64/sysdep.h
similarity index 97%
rename from sysdeps/unix/mips/mips64/n32/sysdep.h
rename to sysdeps/unix/mips/mips64/sysdep.h
index 65ce7c5406..fb5f27daf3 100644
--- a/sysdeps/unix/mips/mips64/n32/sysdep.h
+++ b/sysdeps/unix/mips/mips64/sysdep.h
@@ -19,6 +19,7 @@ 
 #include <sysdeps/unix/mips/sysdep.h>
 
 #ifdef __ASSEMBLER__
+#include <sys/asm.h>
 
 /* Note that while it's better structurally, going back to call __syscall_error
    can make things confusing if you're debugging---it looks like it's jumping
@@ -33,7 +34,7 @@ 
   .cpsetup t9, $1, name;						      \
   cfi_register (gp, $1);						      \
   .set at;								      \
-  la t9,__syscall_error;						      \
+  PTR_LA t9,__syscall_error;						      \
   .cpreturn;								      \
   cfi_restore (gp);							      \
   jr t9;								      \
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h b/sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h
deleted file mode 100644
index 9d30291f84..0000000000
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h
+++ /dev/null
@@ -1,307 +0,0 @@ 
-/* Copyright (C) 2000-2020 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 _LINUX_MIPS_SYSDEP_H
-#define _LINUX_MIPS_SYSDEP_H 1
-
-/* There is some commonality.  */
-#include <sysdeps/unix/sysv/linux/mips/sysdep.h>
-#include <sysdeps/unix/sysv/linux/sysdep.h>
-#include <sysdeps/unix/mips/mips64/n64/sysdep.h>
-
-#include <tls.h>
-
-/* In order to get __set_errno() definition in INLINE_SYSCALL.  */
-#ifndef __ASSEMBLER__
-#include <errno.h>
-#endif
-
-/* For Linux we can use the system call table in the header file
-	/usr/include/asm/unistd.h
-   of the kernel.  But these symbols do not follow the SYS_* syntax
-   so we have to redefine the `SYS_ify' macro here.  */
-#undef SYS_ify
-#define SYS_ify(syscall_name)	__NR_##syscall_name
-
-#ifdef __ASSEMBLER__
-
-/* We don't want the label for the error handler to be visible in the symbol
-   table when we define it here.  */
-# define SYSCALL_ERROR_LABEL 99b
-
-#else   /* ! __ASSEMBLER__ */
-
-/* Define a macro which expands into the inline wrapper code for a system
-   call.  */
-#undef INLINE_SYSCALL
-#define INLINE_SYSCALL(name, nr, args...)				\
-  ({ INTERNAL_SYSCALL_DECL (_sc_err);					\
-     long result_var = INTERNAL_SYSCALL (name, _sc_err, nr, args);	\
-     if ( INTERNAL_SYSCALL_ERROR_P (result_var, _sc_err) )		\
-       {								\
-	 __set_errno (INTERNAL_SYSCALL_ERRNO (result_var, _sc_err));	\
-	 result_var = -1L;						\
-       }								\
-     result_var; })
-
-#undef INTERNAL_SYSCALL_DECL
-#define INTERNAL_SYSCALL_DECL(err) long err __attribute__ ((unused))
-
-#undef INTERNAL_SYSCALL_ERROR_P
-#define INTERNAL_SYSCALL_ERROR_P(val, err)   ((void) (val), (long) (err))
-
-#undef INTERNAL_SYSCALL_ERRNO
-#define INTERNAL_SYSCALL_ERRNO(val, err)     ((void) (err), val)
-
-/* Note that the original Linux syscall restart convention required the
-   instruction immediately preceding SYSCALL to initialize $v0 with the
-   syscall number.  Then if a restart triggered, $v0 would have been
-   clobbered by the syscall interrupted, and needed to be reinititalized.
-   The kernel would decrement the PC by 4 before switching back to the
-   user mode so that $v0 had been reloaded before SYSCALL was executed
-   again.  This implied the place $v0 was loaded from must have been
-   preserved across a syscall, e.g. an immediate, static register, stack
-   slot, etc.
-
-   The convention was relaxed in Linux with a change applied to the kernel
-   GIT repository as commit 96187fb0bc30cd7919759d371d810e928048249d, that
-   first appeared in the 2.6.36 release.  Since then the kernel has had
-   code that reloads $v0 upon syscall restart and resumes right at the
-   SYSCALL instruction, so no special arrangement is needed anymore.
-
-   For backwards compatibility with existing kernel binaries we support
-   the old convention by choosing the instruction preceding SYSCALL
-   carefully.  This also means we have to force a 32-bit encoding of the
-   microMIPS MOVE instruction if one is used.  */
-
-#ifdef __mips_micromips
-# define MOVE32 "move32"
-#else
-# define MOVE32 "move"
-#endif
-
-#undef INTERNAL_SYSCALL
-#define INTERNAL_SYSCALL(name, err, nr, args...)			\
-	internal_syscall##nr ("li\t%0, %2\t\t\t# " #name "\n\t",	\
-			      "IK" (SYS_ify (name)),			\
-			      0, err, args)
-
-#undef INTERNAL_SYSCALL_NCS
-#define INTERNAL_SYSCALL_NCS(number, err, nr, args...)			\
-	internal_syscall##nr (MOVE32 "\t%0, %2\n\t",			\
-			      "r" (__s0),				\
-			      number, err, args)
-
-#define internal_syscall0(v0_init, input, number, err, dummy...)	\
-({									\
-	long _sys_result;						\
-									\
-	{								\
-	register long __s0 asm ("$16") __attribute__ ((unused))		\
-	  = (number);							\
-	register long __v0 asm ("$2");					\
-	register long __a3 asm ("$7");					\
-	__asm__ volatile (						\
-	".set\tnoreorder\n\t"						\
-	v0_init								\
-	"syscall\n\t"							\
-	".set reorder"							\
-	: "=r" (__v0), "=r" (__a3)					\
-	: input								\
-	: __SYSCALL_CLOBBERS);						\
-	err = __a3;							\
-	_sys_result = __v0;						\
-	}								\
-	_sys_result;							\
-})
-
-#define internal_syscall1(v0_init, input, number, err, arg1)		\
-({									\
-	long _sys_result;						\
-									\
-	{								\
-	register long __s0 asm ("$16") __attribute__ ((unused))		\
-	  = (number);							\
-	register long __v0 asm ("$2");					\
-	register long __a0 asm ("$4") = (long) (arg1);			\
-	register long __a3 asm ("$7");					\
-	__asm__ volatile (						\
-	".set\tnoreorder\n\t"						\
-	v0_init								\
-	"syscall\n\t"							\
-	".set reorder"							\
-	: "=r" (__v0), "=r" (__a3)					\
-	: input, "r" (__a0)						\
-	: __SYSCALL_CLOBBERS);						\
-	err = __a3;							\
-	_sys_result = __v0;						\
-	}								\
-	_sys_result;							\
-})
-
-#define internal_syscall2(v0_init, input, number, err, arg1, arg2)	\
-({									\
-	long _sys_result;						\
-									\
-	{								\
-	register long __s0 asm ("$16") __attribute__ ((unused))		\
-	  = (number);							\
-	register long __v0 asm ("$2");					\
-	register long __a0 asm ("$4") = (long) (arg1);			\
-	register long __a1 asm ("$5") = (long) (arg2);			\
-	register long __a3 asm ("$7");					\
-	__asm__ volatile (						\
-	".set\tnoreorder\n\t"						\
-	v0_init								\
-	"syscall\n\t"							\
-	".set\treorder"							\
-	: "=r" (__v0), "=r" (__a3)					\
-	: input, "r" (__a0), "r" (__a1)					\
-	: __SYSCALL_CLOBBERS);						\
-	err = __a3;							\
-	_sys_result = __v0;						\
-	}								\
-	_sys_result;							\
-})
-
-#define internal_syscall3(v0_init, input, number, err,			\
-			  arg1, arg2, arg3)				\
-({									\
-	long _sys_result;						\
-									\
-	{								\
-	register long __s0 asm ("$16") __attribute__ ((unused))		\
-	  = (number);							\
-	register long __v0 asm ("$2");					\
-	register long __a0 asm ("$4") = (long) (arg1);			\
-	register long __a1 asm ("$5") = (long) (arg2);			\
-	register long __a2 asm ("$6") = (long) (arg3);			\
-	register long __a3 asm ("$7");					\
-	__asm__ volatile (						\
-	".set\tnoreorder\n\t"						\
-	v0_init								\
-	"syscall\n\t"							\
-	".set\treorder"							\
-	: "=r" (__v0), "=r" (__a3)					\
-	: input, "r" (__a0), "r" (__a1), "r" (__a2)			\
-	: __SYSCALL_CLOBBERS);						\
-	err = __a3;							\
-	_sys_result = __v0;						\
-	}								\
-	_sys_result;							\
-})
-
-#define internal_syscall4(v0_init, input, number, err,			\
-			  arg1, arg2, arg3, arg4)			\
-({									\
-	long _sys_result;						\
-									\
-	{								\
-	register long __s0 asm ("$16") __attribute__ ((unused))		\
-	  = (number);							\
-	register long __v0 asm ("$2");					\
-	register long __a0 asm ("$4") = (long) (arg1);			\
-	register long __a1 asm ("$5") = (long) (arg2);			\
-	register long __a2 asm ("$6") = (long) (arg3);			\
-	register long __a3 asm ("$7") = (long) (arg4);			\
-	__asm__ volatile (						\
-	".set\tnoreorder\n\t"						\
-	v0_init								\
-	"syscall\n\t"							\
-	".set\treorder"							\
-	: "=r" (__v0), "+r" (__a3)					\
-	: input, "r" (__a0), "r" (__a1), "r" (__a2)			\
-	: __SYSCALL_CLOBBERS);						\
-	err = __a3;							\
-	_sys_result = __v0;						\
-	}								\
-	_sys_result;							\
-})
-
-#define internal_syscall5(v0_init, input, number, err,			\
-			  arg1, arg2, arg3, arg4, arg5)			\
-({									\
-	long _sys_result;						\
-									\
-	{								\
-	register long __s0 asm ("$16") __attribute__ ((unused))		\
-	  = (number);							\
-	register long __v0 asm ("$2");					\
-	register long __a0 asm ("$4") = (long) (arg1);			\
-	register long __a1 asm ("$5") = (long) (arg2);			\
-	register long __a2 asm ("$6") = (long) (arg3);			\
-	register long __a3 asm ("$7") = (long) (arg4);			\
-	register long __a4 asm ("$8") = (long) (arg5);			\
-	__asm__ volatile (						\
-	".set\tnoreorder\n\t"						\
-	v0_init								\
-	"syscall\n\t"							\
-	".set\treorder"							\
-	: "=r" (__v0), "+r" (__a3)					\
-	: input, "r" (__a0), "r" (__a1), "r" (__a2), "r" (__a4)		\
-	: __SYSCALL_CLOBBERS);						\
-	err = __a3;							\
-	_sys_result = __v0;						\
-	}								\
-	_sys_result;							\
-})
-
-#define internal_syscall6(v0_init, input, number, err,			\
-			  arg1, arg2, arg3, arg4, arg5, arg6)		\
-({									\
-	long _sys_result;						\
-									\
-	{								\
-	register long __s0 asm ("$16") __attribute__ ((unused))		\
-	  = (number);							\
-	register long __v0 asm ("$2");					\
-	register long __a0 asm ("$4") = (long) (arg1);			\
-	register long __a1 asm ("$5") = (long) (arg2);			\
-	register long __a2 asm ("$6") = (long) (arg3);			\
-	register long __a3 asm ("$7") = (long) (arg4);			\
-	register long __a4 asm ("$8") = (long) (arg5);			\
-	register long __a5 asm ("$9") = (long) (arg6);			\
-	__asm__ volatile (						\
-	".set\tnoreorder\n\t"						\
-	v0_init								\
-	"syscall\n\t"							\
-	".set\treorder"							\
-	: "=r" (__v0), "+r" (__a3)					\
-	: input, "r" (__a0), "r" (__a1), "r" (__a2), "r" (__a4),	\
-	  "r" (__a5)							\
-	: __SYSCALL_CLOBBERS);						\
-	err = __a3;							\
-	_sys_result = __v0;						\
-	}								\
-	_sys_result;							\
-})
-
-#if __mips_isa_rev >= 6
-# define __SYSCALL_CLOBBERS "$1", "$3", "$10", "$11", "$12", "$13", \
-	 "$14", "$15", "$24", "$25", "memory"
-#else
-# define __SYSCALL_CLOBBERS "$1", "$3", "$10", "$11", "$12", "$13", \
-	 "$14", "$15", "$24", "$25", "hi", "lo", "memory"
-#endif
-
-#endif /* __ASSEMBLER__ */
-
-/* Pointer mangling is not yet supported for MIPS.  */
-#define PTR_MANGLE(var) (void) (var)
-#define PTR_DEMANGLE(var) (void) (var)
-
-#endif /* linux/mips/sysdep.h */
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h b/sysdeps/unix/sysv/linux/mips/mips64/sysdep.h
similarity index 76%
rename from sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h
rename to sysdeps/unix/sysv/linux/mips/mips64/sysdep.h
index f96636538a..617e229a67 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h
+++ b/sysdeps/unix/sysv/linux/mips/mips64/sysdep.h
@@ -21,7 +21,7 @@ 
 /* There is some commonality.  */
 #include <sysdeps/unix/sysv/linux/mips/sysdep.h>
 #include <sysdeps/unix/sysv/linux/sysdep.h>
-#include <sysdeps/unix/mips/mips64/n32/sysdep.h>
+#include <sysdeps/unix/mips/mips64/sysdep.h>
 
 #include <tls.h>
 
@@ -45,9 +45,15 @@ 
 
 #else   /* ! __ASSEMBLER__ */
 
+#if _MIPS_SIM == _ABIN32
 /* Convert X to a long long, without losing any bits if it is one
    already or warning if it is a 32-bit pointer.  */
-#define ARGIFY(X) ((long long) (__typeof__ ((X) - (X))) (X))
+# define ARGIFY(X) ((long long int) (__typeof__ ((X) - (X))) (X))
+typedef long long int __syscall_arg_t;
+#else
+# define ARGIFY(X) ((long int) (X))
+typedef long int __syscall_arg_t;
+#endif
 
 /* Define a macro which expands into the inline wrapper code for a system
    call.  */
@@ -115,10 +121,10 @@ 
 	long _sys_result;						\
 									\
 	{								\
-	register long long __s0 asm ("$16") __attribute__ ((unused))	\
+	register __syscall_arg_t __s0 asm ("$16") __attribute__ ((unused))\
 	  = (number);							\
-	register long long __v0 asm ("$2");				\
-	register long long __a3 asm ("$7");				\
+	register __syscall_arg_t __v0 asm ("$2");			\
+	register __syscall_arg_t __a3 asm ("$7");			\
 	__asm__ volatile (						\
 	".set\tnoreorder\n\t"						\
 	v0_init								\
@@ -138,11 +144,11 @@ 
 	long _sys_result;						\
 									\
 	{								\
-	register long long __s0 asm ("$16") __attribute__ ((unused))	\
+	register __syscall_arg_t __s0 asm ("$16") __attribute__ ((unused))\
 	  = (number);							\
-	register long long __v0 asm ("$2");				\
-	register long long __a0 asm ("$4") = ARGIFY (arg1);		\
-	register long long __a3 asm ("$7");				\
+	register __syscall_arg_t __v0 asm ("$2");			\
+	register __syscall_arg_t __a0 asm ("$4") = ARGIFY (arg1);	\
+	register __syscall_arg_t __a3 asm ("$7");			\
 	__asm__ volatile (						\
 	".set\tnoreorder\n\t"						\
 	v0_init								\
@@ -162,12 +168,12 @@ 
 	long _sys_result;						\
 									\
 	{								\
-	register long long __s0 asm ("$16") __attribute__ ((unused))	\
+	register __syscall_arg_t __s0 asm ("$16") __attribute__ ((unused))\
 	  = (number);							\
-	register long long __v0 asm ("$2");				\
-	register long long __a0 asm ("$4") = ARGIFY (arg1);		\
-	register long long __a1 asm ("$5") = ARGIFY (arg2);		\
-	register long long __a3 asm ("$7");				\
+	register __syscall_arg_t __v0 asm ("$2");			\
+	register __syscall_arg_t __a0 asm ("$4") = ARGIFY (arg1);	\
+	register __syscall_arg_t __a1 asm ("$5") = ARGIFY (arg2);	\
+	register __syscall_arg_t __a3 asm ("$7");			\
 	__asm__ volatile (						\
 	".set\tnoreorder\n\t"						\
 	v0_init								\
@@ -188,13 +194,13 @@ 
 	long _sys_result;						\
 									\
 	{								\
-	register long long __s0 asm ("$16") __attribute__ ((unused))	\
+	register __syscall_arg_t __s0 asm ("$16") __attribute__ ((unused))\
 	  = (number);							\
-	register long long __v0 asm ("$2");				\
-	register long long __a0 asm ("$4") = ARGIFY (arg1);		\
-	register long long __a1 asm ("$5") = ARGIFY (arg2);		\
-	register long long __a2 asm ("$6") = ARGIFY (arg3);		\
-	register long long __a3 asm ("$7");				\
+	register __syscall_arg_t __v0 asm ("$2");			\
+	register __syscall_arg_t __a0 asm ("$4") = ARGIFY (arg1);	\
+	register __syscall_arg_t __a1 asm ("$5") = ARGIFY (arg2);	\
+	register __syscall_arg_t __a2 asm ("$6") = ARGIFY (arg3);	\
+	register __syscall_arg_t __a3 asm ("$7");			\
 	__asm__ volatile (						\
 	".set\tnoreorder\n\t"						\
 	v0_init								\
@@ -215,13 +221,13 @@ 
 	long _sys_result;						\
 									\
 	{								\
-	register long long __s0 asm ("$16") __attribute__ ((unused))	\
+	register __syscall_arg_t __s0 asm ("$16") __attribute__ ((unused))\
 	  = (number);							\
-	register long long __v0 asm ("$2");				\
-	register long long __a0 asm ("$4") = ARGIFY (arg1);		\
-	register long long __a1 asm ("$5") = ARGIFY (arg2);		\
-	register long long __a2 asm ("$6") = ARGIFY (arg3);		\
-	register long long __a3 asm ("$7") = ARGIFY (arg4);		\
+	register __syscall_arg_t __v0 asm ("$2");			\
+	register __syscall_arg_t __a0 asm ("$4") = ARGIFY (arg1);	\
+	register __syscall_arg_t __a1 asm ("$5") = ARGIFY (arg2);	\
+	register __syscall_arg_t __a2 asm ("$6") = ARGIFY (arg3);	\
+	register __syscall_arg_t __a3 asm ("$7") = ARGIFY (arg4);	\
 	__asm__ volatile (						\
 	".set\tnoreorder\n\t"						\
 	v0_init								\
@@ -242,14 +248,14 @@ 
 	long _sys_result;						\
 									\
 	{								\
-	register long long __s0 asm ("$16") __attribute__ ((unused))	\
+	register __syscall_arg_t __s0 asm ("$16") __attribute__ ((unused))\
 	  = (number);							\
-	register long long __v0 asm ("$2");				\
-	register long long __a0 asm ("$4") = ARGIFY (arg1);		\
-	register long long __a1 asm ("$5") = ARGIFY (arg2);		\
-	register long long __a2 asm ("$6") = ARGIFY (arg3);		\
-	register long long __a3 asm ("$7") = ARGIFY (arg4);		\
-	register long long __a4 asm ("$8") = ARGIFY (arg5);		\
+	register __syscall_arg_t __v0 asm ("$2");			\
+	register __syscall_arg_t __a0 asm ("$4") = ARGIFY (arg1);	\
+	register __syscall_arg_t __a1 asm ("$5") = ARGIFY (arg2);	\
+	register __syscall_arg_t __a2 asm ("$6") = ARGIFY (arg3);	\
+	register __syscall_arg_t __a3 asm ("$7") = ARGIFY (arg4);	\
+	register __syscall_arg_t __a4 asm ("$8") = ARGIFY (arg5);	\
 	__asm__ volatile (						\
 	".set\tnoreorder\n\t"						\
 	v0_init								\
@@ -270,15 +276,15 @@ 
 	long _sys_result;						\
 									\
 	{								\
-	register long long __s0 asm ("$16") __attribute__ ((unused))	\
+	register __syscall_arg_t __s0 asm ("$16") __attribute__ ((unused))\
 	  = (number);							\
-	register long long __v0 asm ("$2");				\
-	register long long __a0 asm ("$4") = ARGIFY (arg1);		\
-	register long long __a1 asm ("$5") = ARGIFY (arg2);		\
-	register long long __a2 asm ("$6") = ARGIFY (arg3);		\
-	register long long __a3 asm ("$7") = ARGIFY (arg4);		\
-	register long long __a4 asm ("$8") = ARGIFY (arg5);		\
-	register long long __a5 asm ("$9") = ARGIFY (arg6);		\
+	register __syscall_arg_t __v0 asm ("$2");			\
+	register __syscall_arg_t __a0 asm ("$4") = ARGIFY (arg1);	\
+	register __syscall_arg_t __a1 asm ("$5") = ARGIFY (arg2);	\
+	register __syscall_arg_t __a2 asm ("$6") = ARGIFY (arg3);	\
+	register __syscall_arg_t __a3 asm ("$7") = ARGIFY (arg4);	\
+	register __syscall_arg_t __a4 asm ("$8") = ARGIFY (arg5);	\
+	register __syscall_arg_t __a5 asm ("$9") = ARGIFY (arg6);	\
 	__asm__ volatile (						\
 	".set\tnoreorder\n\t"						\
 	v0_init								\