[04/15] alpha: Refactor syscall and Use Linux kABI for syscall return

diff --git a/sysdeps/unix/alpha/sysdep.h b/sysdeps/unix/alpha/sysdep.h
deleted file mode 100644
index 74db6b02b2..0000000000
--- a/sysdeps/unix/alpha/sysdep.h
+++ /dev/null
@@ -1,382 +0,0 @@ 
-/* Copyright (C) 1992-2020 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Brendan Kehoe (brendan@zen.org).
-
-   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/sysdep.h>
-#include <dl-sysdep.h>         /* Defines RTLD_PRIVATE_ERRNO.  */
-
-#ifdef __ASSEMBLER__
-
-#ifdef __linux__
-# include <alpha/regdef.h>
-#else
-# include <regdef.h>
-#endif
-
-#define __LABEL(x)	x##:
-
-#define LEAF(name, framesize)			\
-  .globl name;					\
-  .align 4;					\
-  .ent name, 0;					\
-  __LABEL(name)					\
-  .frame sp, framesize, ra
-
-#define ENTRY(name)				\
-  .globl name;					\
-  .align 4;					\
-  .ent name, 0;					\
-  __LABEL(name)					\
-  .frame sp, 0, ra
-
-/* Mark the end of function SYM.  */
-#undef END
-#define END(sym)	.end sym
-
-#ifdef PROF
-# define PSEUDO_PROF				\
-	.set noat;				\
-	lda	AT, _mcount;			\
-	jsr	AT, (AT), _mcount;		\
-	.set at
-#else
-# define PSEUDO_PROF
-#endif
-
-#ifdef PROF
-# define PSEUDO_PROLOGUE			\
-	.frame sp, 0, ra;			\
-	ldgp	gp,0(pv);			\
-	PSEUDO_PROF;				\
-	.prologue 1
-#elif defined PIC
-# define PSEUDO_PROLOGUE			\
-	.frame sp, 0, ra;			\
-	.prologue 0
-#else
-# define PSEUDO_PROLOGUE			\
-	.frame sp, 0, ra;			\
-	ldgp	gp,0(pv);			\
-	.prologue 1
-#endif /* PROF */
-
-#ifdef PROF
-# define USEPV_PROF	std
-#else
-# define USEPV_PROF	no
-#endif
-
-#if RTLD_PRIVATE_ERRNO
-# define SYSCALL_ERROR_LABEL	$syscall_error
-# define SYSCALL_ERROR_HANDLER			\
-$syscall_error:					\
-	stl	v0, rtld_errno(gp)	!gprel;	\
-	lda	v0, -1;				\
-	ret
-# define SYSCALL_ERROR_FALLTHRU
-#elif defined(PIC)
-# define SYSCALL_ERROR_LABEL		__syscall_error !samegp
-# define SYSCALL_ERROR_HANDLER
-# define SYSCALL_ERROR_FALLTHRU		br SYSCALL_ERROR_LABEL
-#else
-# define SYSCALL_ERROR_LABEL		$syscall_error
-# define SYSCALL_ERROR_HANDLER			\
-$syscall_error:					\
-	jmp $31, __syscall_error
-# define SYSCALL_ERROR_FALLTHRU
-#endif /* RTLD_PRIVATE_ERRNO */
-
-/* Overridden by specific syscalls.  */
-#undef PSEUDO_PREPARE_ARGS
-#define PSEUDO_PREPARE_ARGS	/* Nothing.  */
-
-#define PSEUDO(name, syscall_name, args)	\
-	.globl name;				\
-	.align 4;				\
-	.ent name,0;				\
-__LABEL(name)					\
-	PSEUDO_PROLOGUE;			\
-	PSEUDO_PREPARE_ARGS			\
-	lda	v0, SYS_ify(syscall_name);	\
-	call_pal PAL_callsys;			\
-	bne	a3, SYSCALL_ERROR_LABEL
-
-#undef PSEUDO_END
-#define PSEUDO_END(sym)				\
-	SYSCALL_ERROR_HANDLER;			\
-	END(sym)
-
-#define PSEUDO_NOERRNO(name, syscall_name, args)	\
-	.globl name;					\
-	.align 4;					\
-	.ent name,0;					\
-__LABEL(name)						\
-	PSEUDO_PROLOGUE;				\
-	PSEUDO_PREPARE_ARGS				\
-	lda	v0, SYS_ify(syscall_name);		\
-	call_pal PAL_callsys;
-
-#undef PSEUDO_END_NOERRNO
-#define PSEUDO_END_NOERRNO(sym)  END(sym)
-
-#define ret_NOERRNO ret
-
-#define PSEUDO_ERRVAL(name, syscall_name, args)	\
-	.globl name;					\
-	.align 4;					\
-	.ent name,0;					\
-__LABEL(name)						\
-	PSEUDO_PROLOGUE;				\
-	PSEUDO_PREPARE_ARGS				\
-	lda	v0, SYS_ify(syscall_name);		\
-	call_pal PAL_callsys;
-
-#undef PSEUDO_END_ERRVAL
-#define PSEUDO_END_ERRVAL(sym)  END(sym)
-
-#define ret_ERRVAL ret
-
-#define r0	v0
-#define r1	a4
-
-#define MOVE(x,y)	mov x,y
-
-#else /* !ASSEMBLER */
-
-/* In order to get __set_errno() definition in INLINE_SYSCALL.  */
-#include <errno.h>
-
-/* ??? Linux needs to be able to override INLINE_SYSCALL for one
-   particular special case.  Make this easy.  */
-
-#undef INLINE_SYSCALL
-#define INLINE_SYSCALL(name, nr, args...) \
-	INLINE_SYSCALL1(name, nr, args)
-
-#define INLINE_SYSCALL1(name, nr, args...)	\
-({						\
-	long _sc_ret, _sc_err;			\
-	inline_syscall##nr(__NR_##name, args);	\
-	if (__builtin_expect (_sc_err, 0))	\
-	  {					\
-	    __set_errno (_sc_ret);		\
-	    _sc_ret = -1L;			\
-	  }					\
-	_sc_ret;				\
-})
-
-#define INTERNAL_SYSCALL(name, err_out, nr, args...) \
-	INTERNAL_SYSCALL1(name, err_out, nr, args)
-
-#define INTERNAL_SYSCALL1(name, err_out, nr, args...)	\
-	INTERNAL_SYSCALL_NCS(__NR_##name, err_out, nr, args)
-
-#define INTERNAL_SYSCALL_NCS(name, err_out, nr, args...) \
-({							\
-	long _sc_ret, _sc_err;				\
-	inline_syscall##nr(name, args);			\
-	err_out = _sc_err;				\
-	_sc_ret;					\
-})
-
-#define INTERNAL_SYSCALL_DECL(err) \
-	long int err __attribute__((unused))
-
-/* The normal Alpha calling convention sign-extends 32-bit quantties
-   no matter what the "real" sign of the 32-bit type.  We want to
-   preserve that when filling in values for the kernel.  */
-#define syscall_promote(arg) \
-  (sizeof (arg) == 4 ? (long)(int)(long)(arg) : (long)(arg))
-
-/* Make sure and "use" the variable that we're not returning,
-   in order to suppress unused variable warnings.  */
-#define INTERNAL_SYSCALL_ERROR_P(val, err)	((void)val, err)
-#define INTERNAL_SYSCALL_ERRNO(val, err)	((void)err, val)
-
-#define inline_syscall_clobbers				\
-	"$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8",	\
-	"$22", "$23", "$24", "$25", "$27", "$28", "memory"
-
-/* It is moderately important optimization-wise to limit the lifetime
-   of the hard-register variables as much as possible.  Thus we copy
-   in/out as close to the asm as possible.  */
-
-#define inline_syscall0(name, args...)				\
-{								\
-	register long _sc_19 __asm__("$19");			\
-	register long _sc_0 = name;				\
-	__asm__ __volatile__					\
-	  ("callsys # %0 %1 <= %2"				\
-	   : "+v"(_sc_0), "=r"(_sc_19)				\
-	   : : inline_syscall_clobbers,				\
-	     "$16", "$17", "$18", "$20", "$21");		\
-	_sc_ret = _sc_0, _sc_err = _sc_19;			\
-}
-
-#define inline_syscall1(name,arg1)				\
-{								\
-	register long _tmp_16 = syscall_promote (arg1);		\
-	register long _sc_0 = name;				\
-	register long _sc_16 __asm__("$16") = _tmp_16;		\
-	register long _sc_19 __asm__("$19");			\
-	__asm__ __volatile__					\
-	  ("callsys # %0 %1 <= %2 %3"				\
-	   : "+v"(_sc_0), "=r"(_sc_19), "+r"(_sc_16)		\
-	   : : inline_syscall_clobbers,				\
-	     "$17", "$18", "$20", "$21");			\
-	_sc_ret = _sc_0, _sc_err = _sc_19;			\
-}
-
-#define inline_syscall2(name,arg1,arg2)				\
-{								\
-	register long _tmp_16 = syscall_promote (arg1);		\
-	register long _tmp_17 = syscall_promote (arg2);		\
-	register long _sc_0 = name;				\
-	register long _sc_16 __asm__("$16") = _tmp_16;		\
-	register long _sc_17 __asm__("$17") = _tmp_17;		\
-	register long _sc_19 __asm__("$19");			\
-	__asm__ __volatile__					\
-	  ("callsys # %0 %1 <= %2 %3 %4"			\
-	   : "+v"(_sc_0), "=r"(_sc_19),				\
-	     "+r"(_sc_16), "+r"(_sc_17)				\
-	   : : inline_syscall_clobbers,				\
-	     "$18", "$20", "$21");				\
-	_sc_ret = _sc_0, _sc_err = _sc_19;			\
-}
-
-#define inline_syscall3(name,arg1,arg2,arg3)			\
-{								\
-	register long _tmp_16 = syscall_promote (arg1);		\
-	register long _tmp_17 = syscall_promote (arg2);		\
-	register long _tmp_18 = syscall_promote (arg3);		\
-	register long _sc_0 = name;				\
-	register long _sc_16 __asm__("$16") = _tmp_16;		\
-	register long _sc_17 __asm__("$17") = _tmp_17;		\
-	register long _sc_18 __asm__("$18") = _tmp_18;		\
-	register long _sc_19 __asm__("$19");			\
-	__asm__ __volatile__					\
-	  ("callsys # %0 %1 <= %2 %3 %4 %5"			\
-	   : "+v"(_sc_0), "=r"(_sc_19), "+r"(_sc_16),		\
-	     "+r"(_sc_17), "+r"(_sc_18)				\
-	   : : inline_syscall_clobbers, "$20", "$21");		\
-	_sc_ret = _sc_0, _sc_err = _sc_19;			\
-}
-
-#define inline_syscall4(name,arg1,arg2,arg3,arg4)		\
-{								\
-	register long _tmp_16 = syscall_promote (arg1);		\
-	register long _tmp_17 = syscall_promote (arg2);		\
-	register long _tmp_18 = syscall_promote (arg3);		\
-	register long _tmp_19 = syscall_promote (arg4);		\
-	register long _sc_0 = name;				\
-	register long _sc_16 __asm__("$16") = _tmp_16;		\
-	register long _sc_17 __asm__("$17") = _tmp_17;		\
-	register long _sc_18 __asm__("$18") = _tmp_18;		\
-	register long _sc_19 __asm__("$19") = _tmp_19;		\
-	__asm__ __volatile__					\
-	  ("callsys # %0 %1 <= %2 %3 %4 %5 %6"			\
-	   : "+v"(_sc_0), "+r"(_sc_19), "+r"(_sc_16),		\
-	     "+r"(_sc_17), "+r"(_sc_18)				\
-	   : : inline_syscall_clobbers, "$20", "$21");		\
-	_sc_ret = _sc_0, _sc_err = _sc_19;			\
-}
-
-#define inline_syscall5(name,arg1,arg2,arg3,arg4,arg5)		\
-{								\
-	register long _tmp_16 = syscall_promote (arg1);		\
-	register long _tmp_17 = syscall_promote (arg2);		\
-	register long _tmp_18 = syscall_promote (arg3);		\
-	register long _tmp_19 = syscall_promote (arg4);		\
-	register long _tmp_20 = syscall_promote (arg5);		\
-	register long _sc_0 = name;				\
-	register long _sc_16 __asm__("$16") = _tmp_16;		\
-	register long _sc_17 __asm__("$17") = _tmp_17;		\
-	register long _sc_18 __asm__("$18") = _tmp_18;		\
-	register long _sc_19 __asm__("$19") = _tmp_19;		\
-	register long _sc_20 __asm__("$20") = _tmp_20;		\
-	__asm__ __volatile__					\
-	  ("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7"		\
-	   : "+v"(_sc_0), "+r"(_sc_19), "+r"(_sc_16),		\
-	     "+r"(_sc_17), "+r"(_sc_18), "+r"(_sc_20)		\
-	   : : inline_syscall_clobbers, "$21");			\
-	_sc_ret = _sc_0, _sc_err = _sc_19;			\
-}
-
-#define inline_syscall6(name,arg1,arg2,arg3,arg4,arg5,arg6)	\
-{								\
-	register long _tmp_16 = syscall_promote (arg1);		\
-	register long _tmp_17 = syscall_promote (arg2);		\
-	register long _tmp_18 = syscall_promote (arg3);		\
-	register long _tmp_19 = syscall_promote (arg4);		\
-	register long _tmp_20 = syscall_promote (arg5);		\
-	register long _tmp_21 = syscall_promote (arg6);		\
-	register long _sc_0 = name;				\
-	register long _sc_16 __asm__("$16") = _tmp_16;		\
-	register long _sc_17 __asm__("$17") = _tmp_17;		\
-	register long _sc_18 __asm__("$18") = _tmp_18;		\
-	register long _sc_19 __asm__("$19") = _tmp_19;		\
-	register long _sc_20 __asm__("$20") = _tmp_20;		\
-	register long _sc_21 __asm__("$21") = _tmp_21;		\
-	__asm__ __volatile__					\
-	  ("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7 %8"		\
-	   : "+v"(_sc_0), "+r"(_sc_19), "+r"(_sc_16),		\
-	     "+r"(_sc_17), "+r"(_sc_18), "+r"(_sc_20),		\
-	     "+r"(_sc_21)					\
-	   : : inline_syscall_clobbers);			\
-	_sc_ret = _sc_0, _sc_err = _sc_19;			\
-}
-#endif /* ASSEMBLER */
-
-/* Pointer mangling support.  Note that tls access is slow enough that
-   we don't deoptimize things by placing the pointer check value there.  */
-
-#ifdef __ASSEMBLER__
-# if IS_IN (rtld)
-#  define PTR_MANGLE(dst, src, tmp)				\
-	ldah	tmp, __pointer_chk_guard_local($29) !gprelhigh;	\
-	ldq	tmp, __pointer_chk_guard_local(tmp) !gprellow;	\
-	xor	src, tmp, dst
-#  define PTR_MANGLE2(dst, src, tmp)				\
-	xor	src, tmp, dst
-# elif defined SHARED
-#  define PTR_MANGLE(dst, src, tmp)		\
-	ldq	tmp, __pointer_chk_guard;	\
-	xor	src, tmp, dst
-# else
-#  define PTR_MANGLE(dst, src, tmp)		\
-	ldq	tmp, __pointer_chk_guard_local;	\
-	xor	src, tmp, dst
-# endif
-# define PTR_MANGLE2(dst, src, tmp)		\
-	xor	src, tmp, dst
-# define PTR_DEMANGLE(dst, tmp)   PTR_MANGLE(dst, dst, tmp)
-# define PTR_DEMANGLE2(dst, tmp)  PTR_MANGLE2(dst, dst, tmp)
-#else
-# include <stdint.h>
-# if (IS_IN (rtld) \
-      || (!defined SHARED && (IS_IN (libc) \
-			      || IS_IN (libpthread))))
-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)
-# else
-extern uintptr_t __pointer_chk_guard attribute_relro;
-#  define PTR_MANGLE(var) \
-	(var) = (__typeof(var)) ((uintptr_t) (var) ^ __pointer_chk_guard)
-# endif
-# define PTR_DEMANGLE(var)  PTR_MANGLE(var)
-#endif /* ASSEMBLER */
diff --git a/sysdeps/unix/sysv/linux/alpha/ioperm.c b/sysdeps/unix/sysv/linux/alpha/ioperm.c
index 086c782b9f..cf775674b4 100644
--- a/sysdeps/unix/sysv/linux/alpha/ioperm.c
+++ b/sysdeps/unix/sysv/linux/alpha/ioperm.c
@@ -196,12 +196,7 @@  stl_mb(unsigned int val, unsigned long addr)
 static inline void
 __sethae(unsigned long value)
 {
-  register unsigned long r16 __asm__("$16") = value;
-  register unsigned long r0 __asm__("$0") = __NR_sethae;
-  __asm__ __volatile__ ("callsys"
-			: "=r"(r0)
-			: "0"(r0), "r" (r16)
-			: inline_syscall_clobbers, "$19");
+  INLINE_SYSCALL_CALL (sethae, value);
 }
 
 extern long __pciconfig_iobase(enum __pciconfig_iobase_which __which,
diff --git a/sysdeps/unix/sysv/linux/alpha/sysdep.h b/sysdeps/unix/sysv/linux/alpha/sysdep.h
index f8c9e589ec..ca0b4e475c 100644
--- a/sysdeps/unix/sysv/linux/alpha/sysdep.h
+++ b/sysdeps/unix/sysv/linux/alpha/sysdep.h
@@ -19,14 +19,10 @@ 
 #ifndef _LINUX_ALPHA_SYSDEP_H
 #define _LINUX_ALPHA_SYSDEP_H 1
 
-#ifdef __ASSEMBLER__
-#include <asm/pal.h>
-#include <alpha/regdef.h>
-#endif
-
 /* There is some commonality.  */
 #include <sysdeps/unix/sysv/linux/sysdep.h>
-#include <sysdeps/unix/alpha/sysdep.h>
+#include <sysdeps/unix/sysdep.h>
+#include <dl-sysdep.h>         /* Defines RTLD_PRIVATE_ERRNO.  */
 
 #include <tls.h>
 
@@ -39,4 +35,348 @@ 
 
 #define SINGLE_THREAD_BY_GLOBAL 1
 
-#endif /* _LINUX_ALPHA_SYSDEP_H */
+#ifdef __ASSEMBLER__
+#include <asm/pal.h>
+#include <alpha/regdef.h>
+
+#define __LABEL(x)	x##:
+
+#define LEAF(name, framesize)			\
+  .globl name;					\
+  .align 4;					\
+  .ent name, 0;					\
+  __LABEL(name)					\
+  .frame sp, framesize, ra
+
+#define ENTRY(name)				\
+  .globl name;					\
+  .align 4;					\
+  .ent name, 0;					\
+  __LABEL(name)					\
+  .frame sp, 0, ra
+
+/* Mark the end of function SYM.  */
+#undef END
+#define END(sym)	.end sym
+
+#ifdef PROF
+# define PSEUDO_PROF				\
+	.set noat;				\
+	lda	AT, _mcount;			\
+	jsr	AT, (AT), _mcount;		\
+	.set at
+#else
+# define PSEUDO_PROF
+#endif
+
+#ifdef PROF
+# define PSEUDO_PROLOGUE			\
+	.frame sp, 0, ra;			\
+	ldgp	gp,0(pv);			\
+	PSEUDO_PROF;				\
+	.prologue 1
+#elif defined PIC
+# define PSEUDO_PROLOGUE			\
+	.frame sp, 0, ra;			\
+	.prologue 0
+#else
+# define PSEUDO_PROLOGUE			\
+	.frame sp, 0, ra;			\
+	ldgp	gp,0(pv);			\
+	.prologue 1
+#endif /* PROF */
+
+#ifdef PROF
+# define USEPV_PROF	std
+#else
+# define USEPV_PROF	no
+#endif
+
+#if RTLD_PRIVATE_ERRNO
+# define SYSCALL_ERROR_LABEL	$syscall_error
+# define SYSCALL_ERROR_HANDLER			\
+$syscall_error:					\
+	stl	v0, rtld_errno(gp)	!gprel;	\
+	lda	v0, -1;				\
+	ret
+# define SYSCALL_ERROR_FALLTHRU
+#elif defined(PIC)
+# define SYSCALL_ERROR_LABEL		__syscall_error !samegp
+# define SYSCALL_ERROR_HANDLER
+# define SYSCALL_ERROR_FALLTHRU		br SYSCALL_ERROR_LABEL
+#else
+# define SYSCALL_ERROR_LABEL		$syscall_error
+# define SYSCALL_ERROR_HANDLER			\
+$syscall_error:					\
+	jmp $31, __syscall_error
+# define SYSCALL_ERROR_FALLTHRU
+#endif /* RTLD_PRIVATE_ERRNO */
+
+/* Overridden by specific syscalls.  */
+#undef PSEUDO_PREPARE_ARGS
+#define PSEUDO_PREPARE_ARGS	/* Nothing.  */
+
+#define PSEUDO(name, syscall_name, args)	\
+	.globl name;				\
+	.align 4;				\
+	.ent name,0;				\
+__LABEL(name)					\
+	PSEUDO_PROLOGUE;			\
+	PSEUDO_PREPARE_ARGS			\
+	lda	v0, SYS_ify(syscall_name);	\
+	call_pal PAL_callsys;			\
+	bne	a3, SYSCALL_ERROR_LABEL
+
+#undef PSEUDO_END
+#define PSEUDO_END(sym)				\
+	SYSCALL_ERROR_HANDLER;			\
+	END(sym)
+
+#define PSEUDO_NOERRNO(name, syscall_name, args)	\
+	.globl name;					\
+	.align 4;					\
+	.ent name,0;					\
+__LABEL(name)						\
+	PSEUDO_PROLOGUE;				\
+	PSEUDO_PREPARE_ARGS				\
+	lda	v0, SYS_ify(syscall_name);		\
+	call_pal PAL_callsys;
+
+#undef PSEUDO_END_NOERRNO
+#define PSEUDO_END_NOERRNO(sym)  END(sym)
+
+#define ret_NOERRNO ret
+
+#define PSEUDO_ERRVAL(name, syscall_name, args)	\
+	.globl name;					\
+	.align 4;					\
+	.ent name,0;					\
+__LABEL(name)						\
+	PSEUDO_PROLOGUE;				\
+	PSEUDO_PREPARE_ARGS				\
+	lda	v0, SYS_ify(syscall_name);		\
+	call_pal PAL_callsys;
+
+#undef PSEUDO_END_ERRVAL
+#define PSEUDO_END_ERRVAL(sym)  END(sym)
+
+#define ret_ERRVAL ret
+
+#define r0	v0
+#define r1	a4
+
+#define MOVE(x,y)	mov x,y
+
+#else /* !ASSEMBLER */
+
+/* In order to get __set_errno() definition in INLINE_SYSCALL.  */
+#include <errno.h>
+
+#undef INLINE_SYSCALL
+#define INLINE_SYSCALL(name, nr, args...)				\
+({									\
+	INTERNAL_SYSCALL_DECL (_sc_err);				\
+	long int _sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, args);	\
+	if (INTERNAL_SYSCALL_ERROR_P (_sc_ret, _sc_err))		\
+	  {								\
+	    __set_errno (INTERNAL_SYSCALL_ERRNO (_sc_ret, _sc_err));	\
+	    _sc_ret = -1L;						\
+	  }								\
+	_sc_ret;							\
+})
+
+#define INTERNAL_SYSCALL(name, err_out, nr, args...) \
+	internal_syscall##nr(__NR_##name, args)
+
+#define INTERNAL_SYSCALL_NCS(name, err_out, nr, args...) \
+	internal_syscall##nr(name, args)
+
+#define INTERNAL_SYSCALL_DECL(err) do { } while (0)
+
+/* The normal Alpha calling convention sign-extends 32-bit quantties
+   no matter what the "real" sign of the 32-bit type.  We want to
+   preserve that when filling in values for the kernel.  */
+#define syscall_promote(arg) \
+  (sizeof (arg) == 4 ? (long)(int)(long)(arg) : (long)(arg))
+
+/* Make sure and "use" the variable that we're not returning,
+   in order to suppress unused variable warnings.  */
+#define INTERNAL_SYSCALL_ERROR_P(val, err) \
+	((unsigned long) (val) >= (unsigned long) -4095)
+#define INTERNAL_SYSCALL_ERRNO(val, err)	(-(val))
+
+#define internal_syscall_clobbers				\
+	"$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8",	\
+	"$22", "$23", "$24", "$25", "$27", "$28", "memory"
+
+/* It is moderately important optimization-wise to limit the lifetime
+   of the hard-register variables as much as possible.  Thus we copy
+   in/out as close to the asm as possible.  */
+
+#define internal_syscall0(name, args...)			\
+({								\
+	register long _sc_19 __asm__("$19");			\
+	register long _sc_0 = name;				\
+	__asm__ __volatile__					\
+	  ("callsys # %0 %1 <= %2"				\
+	   : "+v"(_sc_0), "=r"(_sc_19)				\
+	   : : internal_syscall_clobbers,			\
+	     "$16", "$17", "$18", "$20", "$21");		\
+	_sc_19 != 0 ? -_sc_0 : _sc_0;				\
+})
+
+#define internal_syscall1(name,arg1)				\
+({								\
+	register long _tmp_16 = syscall_promote (arg1);		\
+	register long _sc_0 = name;				\
+	register long _sc_16 __asm__("$16") = _tmp_16;		\
+	register long _sc_19 __asm__("$19");			\
+	__asm__ __volatile__					\
+	  ("callsys # %0 %1 <= %2 %3"				\
+	   : "+v"(_sc_0), "=r"(_sc_19), "+r"(_sc_16)		\
+	   : : internal_syscall_clobbers,			\
+	     "$17", "$18", "$20", "$21");			\
+	_sc_19 != 0 ? -_sc_0 : _sc_0;				\
+})
+
+#define internal_syscall2(name,arg1,arg2)			\
+({								\
+	register long _tmp_16 = syscall_promote (arg1);		\
+	register long _tmp_17 = syscall_promote (arg2);		\
+	register long _sc_0 = name;				\
+	register long _sc_16 __asm__("$16") = _tmp_16;		\
+	register long _sc_17 __asm__("$17") = _tmp_17;		\
+	register long _sc_19 __asm__("$19");			\
+	__asm__ __volatile__					\
+	  ("callsys # %0 %1 <= %2 %3 %4"			\
+	   : "+v"(_sc_0), "=r"(_sc_19),				\
+	     "+r"(_sc_16), "+r"(_sc_17)				\
+	   : : internal_syscall_clobbers,			\
+	     "$18", "$20", "$21");				\
+	_sc_19 != 0 ? -_sc_0 : _sc_0;				\
+})
+
+#define internal_syscall3(name,arg1,arg2,arg3)			\
+({								\
+	register long _tmp_16 = syscall_promote (arg1);		\
+	register long _tmp_17 = syscall_promote (arg2);		\
+	register long _tmp_18 = syscall_promote (arg3);		\
+	register long _sc_0 = name;				\
+	register long _sc_16 __asm__("$16") = _tmp_16;		\
+	register long _sc_17 __asm__("$17") = _tmp_17;		\
+	register long _sc_18 __asm__("$18") = _tmp_18;		\
+	register long _sc_19 __asm__("$19");			\
+	__asm__ __volatile__					\
+	  ("callsys # %0 %1 <= %2 %3 %4 %5"			\
+	   : "+v"(_sc_0), "=r"(_sc_19), "+r"(_sc_16),		\
+	     "+r"(_sc_17), "+r"(_sc_18)				\
+	   : : internal_syscall_clobbers, "$20", "$21");	\
+	_sc_19 != 0 ? -_sc_0 : _sc_0;				\
+})
+
+#define internal_syscall4(name,arg1,arg2,arg3,arg4)		\
+({								\
+	register long _tmp_16 = syscall_promote (arg1);		\
+	register long _tmp_17 = syscall_promote (arg2);		\
+	register long _tmp_18 = syscall_promote (arg3);		\
+	register long _tmp_19 = syscall_promote (arg4);		\
+	register long _sc_0 = name;				\
+	register long _sc_16 __asm__("$16") = _tmp_16;		\
+	register long _sc_17 __asm__("$17") = _tmp_17;		\
+	register long _sc_18 __asm__("$18") = _tmp_18;		\
+	register long _sc_19 __asm__("$19") = _tmp_19;		\
+	__asm__ __volatile__					\
+	  ("callsys # %0 %1 <= %2 %3 %4 %5 %6"			\
+	   : "+v"(_sc_0), "+r"(_sc_19), "+r"(_sc_16),		\
+	     "+r"(_sc_17), "+r"(_sc_18)				\
+	   : : internal_syscall_clobbers, "$20", "$21");	\
+	_sc_19 != 0 ? -_sc_0 : _sc_0;				\
+})
+
+#define internal_syscall5(name,arg1,arg2,arg3,arg4,arg5)	\
+({								\
+	register long _tmp_16 = syscall_promote (arg1);		\
+	register long _tmp_17 = syscall_promote (arg2);		\
+	register long _tmp_18 = syscall_promote (arg3);		\
+	register long _tmp_19 = syscall_promote (arg4);		\
+	register long _tmp_20 = syscall_promote (arg5);		\
+	register long _sc_0 = name;				\
+	register long _sc_16 __asm__("$16") = _tmp_16;		\
+	register long _sc_17 __asm__("$17") = _tmp_17;		\
+	register long _sc_18 __asm__("$18") = _tmp_18;		\
+	register long _sc_19 __asm__("$19") = _tmp_19;		\
+	register long _sc_20 __asm__("$20") = _tmp_20;		\
+	__asm__ __volatile__					\
+	  ("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7"		\
+	   : "+v"(_sc_0), "+r"(_sc_19), "+r"(_sc_16),		\
+	     "+r"(_sc_17), "+r"(_sc_18), "+r"(_sc_20)		\
+	   : : internal_syscall_clobbers, "$21");		\
+	_sc_19 != 0 ? -_sc_0 : _sc_0;				\
+})
+
+#define internal_syscall6(name,arg1,arg2,arg3,arg4,arg5,arg6)	\
+({								\
+	register long _tmp_16 = syscall_promote (arg1);		\
+	register long _tmp_17 = syscall_promote (arg2);		\
+	register long _tmp_18 = syscall_promote (arg3);		\
+	register long _tmp_19 = syscall_promote (arg4);		\
+	register long _tmp_20 = syscall_promote (arg5);		\
+	register long _tmp_21 = syscall_promote (arg6);		\
+	register long _sc_0 = name;				\
+	register long _sc_16 __asm__("$16") = _tmp_16;		\
+	register long _sc_17 __asm__("$17") = _tmp_17;		\
+	register long _sc_18 __asm__("$18") = _tmp_18;		\
+	register long _sc_19 __asm__("$19") = _tmp_19;		\
+	register long _sc_20 __asm__("$20") = _tmp_20;		\
+	register long _sc_21 __asm__("$21") = _tmp_21;		\
+	__asm__ __volatile__					\
+	  ("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7 %8"		\
+	   : "+v"(_sc_0), "+r"(_sc_19), "+r"(_sc_16),		\
+	     "+r"(_sc_17), "+r"(_sc_18), "+r"(_sc_20),		\
+	     "+r"(_sc_21)					\
+	   : : internal_syscall_clobbers);			\
+	_sc_19 != 0 ? -_sc_0 : _sc_0;				\
+})
+#endif /* ASSEMBLER */
+
+/* Pointer mangling support.  Note that tls access is slow enough that
+   we don't deoptimize things by placing the pointer check value there.  */
+
+#ifdef __ASSEMBLER__
+# if IS_IN (rtld)
+#  define PTR_MANGLE(dst, src, tmp)				\
+	ldah	tmp, __pointer_chk_guard_local($29) !gprelhigh;	\
+	ldq	tmp, __pointer_chk_guard_local(tmp) !gprellow;	\
+	xor	src, tmp, dst
+#  define PTR_MANGLE2(dst, src, tmp)				\
+	xor	src, tmp, dst
+# elif defined SHARED
+#  define PTR_MANGLE(dst, src, tmp)		\
+	ldq	tmp, __pointer_chk_guard;	\
+	xor	src, tmp, dst
+# else
+#  define PTR_MANGLE(dst, src, tmp)		\
+	ldq	tmp, __pointer_chk_guard_local;	\
+	xor	src, tmp, dst
+# endif
+# define PTR_MANGLE2(dst, src, tmp)		\
+	xor	src, tmp, dst
+# define PTR_DEMANGLE(dst, tmp)   PTR_MANGLE(dst, dst, tmp)
+# define PTR_DEMANGLE2(dst, tmp)  PTR_MANGLE2(dst, dst, tmp)
+#else
+# include <stdint.h>
+# if (IS_IN (rtld) \
+      || (!defined SHARED && (IS_IN (libc) \
+			      || IS_IN (libpthread))))
+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)
+# else
+extern uintptr_t __pointer_chk_guard attribute_relro;
+#  define PTR_MANGLE(var) \
+	(var) = (__typeof(var)) ((uintptr_t) (var) ^ __pointer_chk_guard)
+# endif
+# define PTR_DEMANGLE(var)  PTR_MANGLE(var)
+#endif /* ASSEMBLER */
+
+#endif /* _LINUX_ALPHA_SYSDEP_H  */