[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / sh / sysdep.h

/* Copyright (C) 1992-2020 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>, August 1995.
   Changed by Kaz Kojima, <kkojima@rr.iij4u.or.jp>.

   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_SH_SYSDEP_H
#define _LINUX_SH_SYSDEP_H 1

/* There is some commonality.  */
#include <sysdeps/unix/sysv/linux/sysdep.h>
#include <sysdeps/unix/sh/sysdep.h>
#include <tls.h>

/* 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__

/* Linux uses a negative return value to indicate syscall errors,
   unlike most Unices, which use the condition codes' carry flag.

   Since version 2.1 the return value of a system call might be
   negative even if the call succeeded.  E.g., the `lseek' system call
   might return a large offset.  Therefore we must not anymore test
   for < 0, but test for a real error by making sure the value in R0
   is a real error number.  Linus said he will make sure the no syscall
   returns a value in -1 .. -4095 as a valid result so we can savely
   test with -4095.  */

#define _IMM1 #-1
#define _IMM12 #-12
#undef	PSEUDO
#define	PSEUDO(name, syscall_name, args) \
 .text; \
 ENTRY (name); \
    DO_CALL (syscall_name, args); \
    mov r0,r1; \
    mov _IMM12,r2; \
    shad r2,r1; \
    not r1,r1; \
    tst r1,r1; \
    bf .Lpseudo_end; \
    SYSCALL_ERROR_HANDLER; \
 .Lpseudo_end:

#undef	PSEUDO_END
#define	PSEUDO_END(name) \
  END (name)

#undef	PSEUDO_NOERRNO
#define	PSEUDO_NOERRNO(name, syscall_name, args) \
 .text; \
 ENTRY (name); \
    DO_CALL (syscall_name, args)

#undef	PSEUDO_END_NOERRNO
#define	PSEUDO_END_NOERRNO(name) \
  END (name)

#define ret_NOERRNO ret

#define	PSEUDO_ERRVAL(name, syscall_name, args) \
 .text; \
 ENTRY (name); \
    DO_CALL (syscall_name, args);

#undef	PSEUDO_END_ERRVAL
#define	PSEUDO_END_ERRVAL(name) \
  END (name)

#define ret_ERRVAL ret

#ifndef PIC
# define SYSCALL_ERROR_HANDLER	\
	mov.l 0f,r1; \
	jmp @r1; \
	 mov r0,r4; \
	.align 2; \
     0: .long __syscall_error
#else
# if RTLD_PRIVATE_ERRNO
#  define SYSCALL_ERROR_HANDLER	\
	neg r0,r1; \
	mov r12,r2; \
	cfi_register (r12, r2); \
	mov.l 0f,r12; \
	mova 0f,r0; \
	add r0,r12; \
	mov.l 1f,r0; \
	mov.l r1,@(r0,r12); \
	mov r2,r12; \
	cfi_restore (r12); \
	bra .Lpseudo_end; \
	 mov _IMM1,r0; \
	.align 2; \
     0: .long _GLOBAL_OFFSET_TABLE_; \
     1: .long rtld_errno@GOTOFF

# elif defined _LIBC_REENTRANT

#  if IS_IN (libc)
#   define SYSCALL_ERROR_ERRNO __libc_errno
#  else
#   define SYSCALL_ERROR_ERRNO errno
#  endif
#  define SYSCALL_ERROR_HANDLER \
	neg r0,r1; \
	mov r12,r2; \
	cfi_register (r12, r2); \
	mov.l 0f,r12; \
	mova 0f,r0; \
	add r0,r12; \
	mov.l 1f,r0; \
	stc gbr, r4; \
	mov.l @(r0,r12),r0; \
	mov r2,r12; \
	cfi_restore (r12); \
	add r4,r0; \
	mov.l r1,@r0; \
	bra .Lpseudo_end; \
	 mov _IMM1,r0; \
	.align 2; \
     0: .long _GLOBAL_OFFSET_TABLE_; \
     1: .long SYSCALL_ERROR_ERRNO@GOTTPOFF
# else
/* Store (-r0) into errno through the GOT.  */
#  define SYSCALL_ERROR_HANDLER						      \
	neg r0,r1; \
	mov r12,r2; \
	cfi_register (r12, r2); \
	mov.l 0f,r12; \
	mova 0f,r0; \
	add r0,r12; \
	mov.l 1f,r0; \
	mov.l @(r0,r12),r0; \
	mov r2,r12; \
	cfi_restore (r12); \
	mov.l r1,@r0; \
	bra .Lpseudo_end; \
	 mov _IMM1,r0; \
	.align 2; \
     0: .long _GLOBAL_OFFSET_TABLE_; \
     1: .long errno@GOT
# endif	/* _LIBC_REENTRANT */
#endif	/* PIC */

# ifdef NEED_SYSCALL_INST_PAD
#  define SYSCALL_INST_PAD \
	or r0,r0; or r0,r0; or r0,r0; or r0,r0; or r0,r0
# else
#  define SYSCALL_INST_PAD
# endif

#define SYSCALL_INST0	trapa #0x10
#define SYSCALL_INST1	trapa #0x11
#define SYSCALL_INST2	trapa #0x12
#define SYSCALL_INST3	trapa #0x13
#define SYSCALL_INST4	trapa #0x14
#define SYSCALL_INST5	mov.l @(0,r15),r0; trapa #0x15
#define SYSCALL_INST6	mov.l @(0,r15),r0; mov.l @(4,r15),r1; trapa #0x16

#undef	DO_CALL
#define DO_CALL(syscall_name, args)	\
    mov.l 1f,r3;			\
    SYSCALL_INST##args;			\
    SYSCALL_INST_PAD;			\
    bra 2f;				\
     nop;				\
    .align 2;				\
 1: .long SYS_ify (syscall_name);	\
 2:

#else /* not __ASSEMBLER__ */

#define SYSCALL_INST_STR0	"trapa #0x10\n\t"
#define SYSCALL_INST_STR1	"trapa #0x11\n\t"
#define SYSCALL_INST_STR2	"trapa #0x12\n\t"
#define SYSCALL_INST_STR3	"trapa #0x13\n\t"
#define SYSCALL_INST_STR4	"trapa #0x14\n\t"
#define SYSCALL_INST_STR5	"trapa #0x15\n\t"
#define SYSCALL_INST_STR6	"trapa #0x16\n\t"

# ifdef NEED_SYSCALL_INST_PAD
#  define SYSCALL_INST_PAD "\
	or r0,r0; or r0,r0; or r0,r0; or r0,r0; or r0,r0"
# else
#  define SYSCALL_INST_PAD
# endif

#define ASMFMT_0
#define ASMFMT_1 \
	, "r" (r4)
#define ASMFMT_2 \
	, "r" (r4), "r" (r5)
#define ASMFMT_3 \
	, "r" (r4), "r" (r5), "r" (r6)
#define ASMFMT_4 \
	, "r" (r4), "r" (r5), "r" (r6), "r" (r7)
#define ASMFMT_5 \
	, "r" (r4), "r" (r5), "r" (r6), "r" (r7), "0" (r0)
#define ASMFMT_6 \
	, "r" (r4), "r" (r5), "r" (r6), "r" (r7), "0" (r0), "r" (r1)
#define ASMFMT_7 \
	, "r" (r4), "r" (r5), "r" (r6), "r" (r7), "0" (r0), "r" (r1), "r" (r2)

#define SUBSTITUTE_ARGS_0()
#define SUBSTITUTE_ARGS_1(arg1) \
	long int _arg1 = (long int) (arg1);				      \
	register long int r4 asm ("%r4") = (long int) (_arg1)
#define SUBSTITUTE_ARGS_2(arg1, arg2) \
	long int _arg1 = (long int) (arg1);				      \
	long int _arg2 = (long int) (arg2);				      \
	register long int r4 asm ("%r4") = (long int) (_arg1);		      \
	register long int r5 asm ("%r5") = (long int) (_arg2)
#define SUBSTITUTE_ARGS_3(arg1, arg2, arg3) \
	long int _arg1 = (long int) (arg1);				      \
	long int _arg2 = (long int) (arg2);				      \
	long int _arg3 = (long int) (arg3);				      \
	register long int r4 asm ("%r4") = (long int) (_arg1);		      \
	register long int r5 asm ("%r5") = (long int) (_arg2);		      \
	register long int r6 asm ("%r6") = (long int) (_arg3)
#define SUBSTITUTE_ARGS_4(arg1, arg2, arg3, arg4) \
	long int _arg1 = (long int) (arg1);				      \
	long int _arg2 = (long int) (arg2);				      \
	long int _arg3 = (long int) (arg3);				      \
	long int _arg4 = (long int) (arg4);				      \
	register long int r4 asm ("%r4") = (long int) (_arg1);		      \
	register long int r5 asm ("%r5") = (long int) (_arg2);		      \
	register long int r6 asm ("%r6") = (long int) (_arg3);		      \
	register long int r7 asm ("%r7") = (long int) (_arg4)
#define SUBSTITUTE_ARGS_5(arg1, arg2, arg3, arg4, arg5) \
	long int _arg1 = (long int) (arg1);				      \
	long int _arg2 = (long int) (arg2);				      \
	long int _arg3 = (long int) (arg3);				      \
	long int _arg4 = (long int) (arg4);				      \
	long int _arg5 = (long int) (arg5);				      \
	register long int r4 asm ("%r4") = (long int) (_arg1);		      \
	register long int r5 asm ("%r5") = (long int) (_arg2);		      \
	register long int r6 asm ("%r6") = (long int) (_arg3);		      \
	register long int r7 asm ("%r7") = (long int) (_arg4);		      \
	register long int r0 asm ("%r0") = (long int) (_arg5)
#define SUBSTITUTE_ARGS_6(arg1, arg2, arg3, arg4, arg5, arg6) \
	long int _arg1 = (long int) (arg1);				      \
	long int _arg2 = (long int) (arg2);				      \
	long int _arg3 = (long int) (arg3);				      \
	long int _arg4 = (long int) (arg4);				      \
	long int _arg5 = (long int) (arg5);				      \
	long int _arg6 = (long int) (arg6);				      \
	register long int r4 asm ("%r4") = (long int)(_arg1);		      \
	register long int r5 asm ("%r5") = (long int) (_arg2);		      \
	register long int r6 asm ("%r6") = (long int) (_arg3);		      \
	register long int r7 asm ("%r7") = (long int) (_arg4);		      \
	register long int r0 asm ("%r0") = (long int) (_arg5);		      \
	register long int r1 asm ("%r1") = (long int) (_arg6)
#define SUBSTITUTE_ARGS_7(arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
	long int _arg1 = (long int) (arg1);				      \
	long int _arg2 = (long int) (arg2);				      \
	long int _arg3 = (long int) (arg3);				      \
	long int _arg4 = (long int) (arg4);				      \
	long int _arg5 = (long int) (arg5);				      \
	long int _arg6 = (long int) (arg6);				      \
	long int _arg7 = (long int) (arg7);				      \
	register long int r4 asm ("%r4") = (long int) (_arg1);		      \
	register long int r5 asm ("%r5") = (long int) (_arg2);		      \
	register long int r6 asm ("%r6") = (long int) (_arg3);		      \
	register long int r7 asm ("%r7") = (long int) (_arg4);		      \
	register long int r0 asm ("%r0") = (long int) (_arg5);		      \
	register long int r1 asm ("%r1") = (long int) (_arg6);		      \
	register long int r2 asm ("%r2") = (long int) (_arg7)

#undef INLINE_SYSCALL
#define INLINE_SYSCALL(name, nr, args...) \
  ({                                                                          \
    unsigned int resultvar = INTERNAL_SYSCALL (name, , nr, args);             \
    if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (resultvar, ), 0))         \
      {                                                                       \
	__set_errno (INTERNAL_SYSCALL_ERRNO (resultvar, ));                   \
	resultvar = 0xffffffff;                                               \
      }                                                                       \
    (int) resultvar; })

#undef INTERNAL_SYSCALL
#define INTERNAL_SYSCALL(name, err, nr, args...) \
  ({									      \
    unsigned long int resultvar;					      \
    register long int r3 asm ("%r3") = SYS_ify (name);			      \
    SUBSTITUTE_ARGS_##nr(args);						      \
									      \
    asm volatile (SYSCALL_INST_STR##nr SYSCALL_INST_PAD			      \
		  : "=z" (resultvar)					      \
		  : "r" (r3) ASMFMT_##nr				      \
		  : "memory", "t");					      \
									      \
    (int) resultvar; })

/* The _NCS variant allows non-constant syscall numbers.  */
#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
  ({									      \
    unsigned long int resultvar;					      \
    register long int r3 asm ("%r3") = (name);				      \
    SUBSTITUTE_ARGS_##nr(args);						      \
									      \
    asm volatile (SYSCALL_INST_STR##nr SYSCALL_INST_PAD			      \
		  : "=z" (resultvar)					      \
		  : "r" (r3) ASMFMT_##nr				      \
		  : "memory", "t");					      \
									      \
    (int) resultvar; })

#undef INTERNAL_SYSCALL_DECL
#define INTERNAL_SYSCALL_DECL(err) do { } while (0)

#undef INTERNAL_SYSCALL_ERROR_P
#define INTERNAL_SYSCALL_ERROR_P(val, err) \
  ((unsigned int) (val) >= 0xfffff001u)

#undef INTERNAL_SYSCALL_ERRNO
#define INTERNAL_SYSCALL_ERRNO(val, err)        (-(val))

#endif	/* __ASSEMBLER__ */

/* Pointer mangling support.  */
#if IS_IN (rtld)
/* We cannot use the thread descriptor because in ld.so we use setjmp
   earlier than the descriptor is initialized.  Using a global variable
   is too complicated here since we have no PC-relative addressing mode.  */
#else
# ifdef __ASSEMBLER__
#  define PTR_MANGLE(reg, tmp) \
     stc gbr,tmp; mov.l @(POINTER_GUARD,tmp),tmp; xor tmp,reg
#  define PTR_MANGLE2(reg, tmp)	xor tmp,reg
#  define PTR_DEMANGLE(reg, tmp)	PTR_MANGLE (reg, tmp)
#  define PTR_DEMANGLE2(reg, tmp)	PTR_MANGLE2 (reg, tmp)
# else
#  define PTR_MANGLE(var) \
     (var) = (void *) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
#  define PTR_DEMANGLE(var)	PTR_MANGLE (var)
# endif
#endif

#endif /* linux/sh/sysdep.h */
Commit	Line	Data
d614a753	1	/* Copyright (C) 1992-2020 Free Software Foundation, Inc.
3846ef75 UD	2	This file is part of the GNU C Library.
	3	Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>, August 1995.
	4	Changed by Kaz Kojima, <kkojima@rr.iij4u.or.jp>.
	5
	6	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	7	modify it under the terms of the GNU Lesser General Public
	8	License as published by the Free Software Foundation; either
	9	version 2.1 of the License, or (at your option) any later version.
3846ef75 UD	10
	11	The GNU C Library is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2	14	Lesser General Public License for more details.
3846ef75	15
41bdb6e2	16	You should have received a copy of the GNU Lesser General Public
59ba27a6	17	License along with the GNU C Library; if not, see
5a82c748	18	<https://www.gnu.org/licenses/>. */
3846ef75 UD	19
	20	#ifndef _LINUX_SH_SYSDEP_H
	21	#define _LINUX_SH_SYSDEP_H 1
	22
	23	/* There is some commonality. */
fb1cf108	24	#include <sysdeps/unix/sysv/linux/sysdep.h>
3846ef75	25	#include <sysdeps/unix/sh/sysdep.h>
d9038ff8	26	#include <tls.h>
3846ef75 UD	27
	28	/* For Linux we can use the system call table in the header file
	29	/usr/include/asm/unistd.h
	30	of the kernel. But these symbols do not follow the SYS_* syntax
	31	so we have to redefine the `SYS_ify' macro here. */
	32	#undef SYS_ify
	33	#define SYS_ify(syscall_name) (__NR_##syscall_name)
	34
	35
	36	#ifdef __ASSEMBLER__
	37
	38	/* Linux uses a negative return value to indicate syscall errors,
	39	unlike most Unices, which use the condition codes' carry flag.
	40
	41	Since version 2.1 the return value of a system call might be
	42	negative even if the call succeeded. E.g., the `lseek' system call
	43	might return a large offset. Therefore we must not anymore test
	44	for < 0, but test for a real error by making sure the value in R0
	45	is a real error number. Linus said he will make sure the no syscall
	46	returns a value in -1 .. -4095 as a valid result so we can savely
	47	test with -4095. */
	48
bbd17455	49	#define _IMM1 #-1
3846ef75 UD	50	#define _IMM12 #-12
3846ef75 UD	51	#undef PSEUDO
3846ef75 UD	52	#define PSEUDO(name, syscall_name, args) \
	53	.text; \
	54	ENTRY (name); \
ffa8d2a0	55	DO_CALL (syscall_name, args); \
3846ef75 UD	56	mov r0,r1; \
	57	mov _IMM12,r2; \
	58	shad r2,r1; \
	59	not r1,r1; \
	60	tst r1,r1; \
bbd17455 UD	61	bf .Lpseudo_end; \
	62	SYSCALL_ERROR_HANDLER; \
	63	.Lpseudo_end:
3846ef75 UD	64
	65	#undef PSEUDO_END
	66	#define PSEUDO_END(name) \
3846ef75 UD	67	END (name)
3846ef75 UD	68
9eb88290 UD	69	#undef PSEUDO_NOERRNO
	70	#define PSEUDO_NOERRNO(name, syscall_name, args) \
	71	.text; \
	72	ENTRY (name); \
	73	DO_CALL (syscall_name, args)
	74
	75	#undef PSEUDO_END_NOERRNO
	76	#define PSEUDO_END_NOERRNO(name) \
	77	END (name)
	78
	79	#define ret_NOERRNO ret
	80
5acf789a UD	81	#define PSEUDO_ERRVAL(name, syscall_name, args) \
	82	.text; \
	83	ENTRY (name); \
	84	DO_CALL (syscall_name, args);
	85
	86	#undef PSEUDO_END_ERRVAL
	87	#define PSEUDO_END_ERRVAL(name) \
	88	END (name)
	89
	90	#define ret_ERRVAL ret
	91
bbd17455	92	#ifndef PIC
aff4519d UD	93	# define SYSCALL_ERROR_HANDLER \
	94	mov.l 0f,r1; \
	95	jmp @r1; \
	96	mov r0,r4; \
	97	.align 2; \
	98	0: .long __syscall_error
bbd17455 UD	99	#else
	100	# if RTLD_PRIVATE_ERRNO
	101	# define SYSCALL_ERROR_HANDLER \
	102	neg r0,r1; \
58f902b8 TS	103	mov r12,r2; \
58f902b8 TS	104	cfi_register (r12, r2); \
bbd17455 UD	105	mov.l 0f,r12; \
	106	mova 0f,r0; \
	107	add r0,r12; \
	108	mov.l 1f,r0; \
d9038ff8	109	mov.l r1,@(r0,r12); \
58f902b8 TS	110	mov r2,r12; \
58f902b8 TS	111	cfi_restore (r12); \
bbd17455 UD	112	bra .Lpseudo_end; \
	113	mov _IMM1,r0; \
	114	.align 2; \
	115	0: .long _GLOBAL_OFFSET_TABLE_; \
96c82b3f	116	1: .long rtld_errno@GOTOFF
bbd17455 UD	117
	118	# elif defined _LIBC_REENTRANT
	119
4f41c682	120	# if IS_IN (libc)
d063d164 UD	121	# define SYSCALL_ERROR_ERRNO __libc_errno
	122	# else
	123	# define SYSCALL_ERROR_ERRNO errno
	124	# endif
	125	# define SYSCALL_ERROR_HANDLER \
bbd17455 UD	126	neg r0,r1; \
bbd17455 UD	127	mov r12,r2; \
58f902b8	128	cfi_register (r12, r2); \
bbd17455 UD	129	mov.l 0f,r12; \
	130	mova 0f,r0; \
	131	add r0,r12; \
	132	mov.l 1f,r0; \
	133	stc gbr, r4; \
	134	mov.l @(r0,r12),r0; \
	135	mov r2,r12; \
58f902b8	136	cfi_restore (r12); \
bbd17455 UD	137	add r4,r0; \
	138	mov.l r1,@r0; \
	139	bra .Lpseudo_end; \
	140	mov _IMM1,r0; \
	141	.align 2; \
	142	0: .long _GLOBAL_OFFSET_TABLE_; \
	143	1: .long SYSCALL_ERROR_ERRNO@GOTTPOFF
bbd17455 UD	144	# else
	145	/* Store (-r0) into errno through the GOT. */
	146	# define SYSCALL_ERROR_HANDLER \
	147	neg r0,r1; \
	148	mov r12,r2; \
58f902b8	149	cfi_register (r12, r2); \
bbd17455 UD	150	mov.l 0f,r12; \
	151	mova 0f,r0; \
	152	add r0,r12; \
	153	mov.l 1f,r0; \
	154	mov.l @(r0,r12),r0; \
	155	mov r2,r12; \
58f902b8	156	cfi_restore (r12); \
bbd17455 UD	157	mov.l r1,@r0; \
	158	bra .Lpseudo_end; \
	159	mov _IMM1,r0; \
	160	.align 2; \
	161	0: .long _GLOBAL_OFFSET_TABLE_; \
	162	1: .long errno@GOT
	163	# endif /* _LIBC_REENTRANT */
	164	#endif /* PIC */
3846ef75	165
1769a73f UD	166	# ifdef NEED_SYSCALL_INST_PAD
	167	# define SYSCALL_INST_PAD \
	168	or r0,r0; or r0,r0; or r0,r0; or r0,r0; or r0,r0
	169	# else
	170	# define SYSCALL_INST_PAD
	171	# endif
	172
876f9634 UD	173	#define SYSCALL_INST0 trapa #0x10
	174	#define SYSCALL_INST1 trapa #0x11
	175	#define SYSCALL_INST2 trapa #0x12
	176	#define SYSCALL_INST3 trapa #0x13
	177	#define SYSCALL_INST4 trapa #0x14
	178	#define SYSCALL_INST5 mov.l @(0,r15),r0; trapa #0x15
	179	#define SYSCALL_INST6 mov.l @(0,r15),r0; mov.l @(4,r15),r1; trapa #0x16
3846ef75 UD	180
3846ef75 UD	181	#undef DO_CALL
ffa8d2a0	182	#define DO_CALL(syscall_name, args) \
876f9634 UD	183	mov.l 1f,r3; \
876f9634 UD	184	SYSCALL_INST##args; \
1769a73f	185	SYSCALL_INST_PAD; \
876f9634 UD	186	bra 2f; \
	187	nop; \
	188	.align 2; \
	189	1: .long SYS_ify (syscall_name); \
3846ef75 UD	190	2:
	191
	192	#else /* not __ASSEMBLER__ */
	193
876f9634 UD	194	#define SYSCALL_INST_STR0 "trapa #0x10\n\t"
	195	#define SYSCALL_INST_STR1 "trapa #0x11\n\t"
	196	#define SYSCALL_INST_STR2 "trapa #0x12\n\t"
	197	#define SYSCALL_INST_STR3 "trapa #0x13\n\t"
	198	#define SYSCALL_INST_STR4 "trapa #0x14\n\t"
	199	#define SYSCALL_INST_STR5 "trapa #0x15\n\t"
	200	#define SYSCALL_INST_STR6 "trapa #0x16\n\t"
	201
2a051a7d UD	202	# ifdef NEED_SYSCALL_INST_PAD
	203	# define SYSCALL_INST_PAD "\
	204	or r0,r0; or r0,r0; or r0,r0; or r0,r0; or r0,r0"
	205	# else
	206	# define SYSCALL_INST_PAD
	207	# endif
	208
876f9634 UD	209	#define ASMFMT_0
	210	#define ASMFMT_1 \
	211	, "r" (r4)
	212	#define ASMFMT_2 \
	213	, "r" (r4), "r" (r5)
	214	#define ASMFMT_3 \
	215	, "r" (r4), "r" (r5), "r" (r6)
	216	#define ASMFMT_4 \
	217	, "r" (r4), "r" (r5), "r" (r6), "r" (r7)
	218	#define ASMFMT_5 \
	219	, "r" (r4), "r" (r5), "r" (r6), "r" (r7), "0" (r0)
	220	#define ASMFMT_6 \
	221	, "r" (r4), "r" (r5), "r" (r6), "r" (r7), "0" (r0), "r" (r1)
	222	#define ASMFMT_7 \
	223	, "r" (r4), "r" (r5), "r" (r6), "r" (r7), "0" (r0), "r" (r1), "r" (r2)
	224
	225	#define SUBSTITUTE_ARGS_0()
78ce59f0 UD	226	#define SUBSTITUTE_ARGS_1(arg1) \
	227	long int _arg1 = (long int) (arg1); \
	228	register long int r4 asm ("%r4") = (long int) (_arg1)
	229	#define SUBSTITUTE_ARGS_2(arg1, arg2) \
	230	long int _arg1 = (long int) (arg1); \
	231	long int _arg2 = (long int) (arg2); \
	232	register long int r4 asm ("%r4") = (long int) (_arg1); \
	233	register long int r5 asm ("%r5") = (long int) (_arg2)
	234	#define SUBSTITUTE_ARGS_3(arg1, arg2, arg3) \
	235	long int _arg1 = (long int) (arg1); \
	236	long int _arg2 = (long int) (arg2); \
	237	long int _arg3 = (long int) (arg3); \
	238	register long int r4 asm ("%r4") = (long int) (_arg1); \
	239	register long int r5 asm ("%r5") = (long int) (_arg2); \
	240	register long int r6 asm ("%r6") = (long int) (_arg3)
	241	#define SUBSTITUTE_ARGS_4(arg1, arg2, arg3, arg4) \
	242	long int _arg1 = (long int) (arg1); \
	243	long int _arg2 = (long int) (arg2); \
	244	long int _arg3 = (long int) (arg3); \
	245	long int _arg4 = (long int) (arg4); \
	246	register long int r4 asm ("%r4") = (long int) (_arg1); \
	247	register long int r5 asm ("%r5") = (long int) (_arg2); \
	248	register long int r6 asm ("%r6") = (long int) (_arg3); \
	249	register long int r7 asm ("%r7") = (long int) (_arg4)
	250	#define SUBSTITUTE_ARGS_5(arg1, arg2, arg3, arg4, arg5) \
	251	long int _arg1 = (long int) (arg1); \
	252	long int _arg2 = (long int) (arg2); \
	253	long int _arg3 = (long int) (arg3); \
	254	long int _arg4 = (long int) (arg4); \
	255	long int _arg5 = (long int) (arg5); \
	256	register long int r4 asm ("%r4") = (long int) (_arg1); \
	257	register long int r5 asm ("%r5") = (long int) (_arg2); \
	258	register long int r6 asm ("%r6") = (long int) (_arg3); \
	259	register long int r7 asm ("%r7") = (long int) (_arg4); \
	260	register long int r0 asm ("%r0") = (long int) (_arg5)
	261	#define SUBSTITUTE_ARGS_6(arg1, arg2, arg3, arg4, arg5, arg6) \
	262	long int _arg1 = (long int) (arg1); \
	263	long int _arg2 = (long int) (arg2); \
	264	long int _arg3 = (long int) (arg3); \
	265	long int _arg4 = (long int) (arg4); \
	266	long int _arg5 = (long int) (arg5); \
	267	long int _arg6 = (long int) (arg6); \
	268	register long int r4 asm ("%r4") = (long int)(_arg1); \
	269	register long int r5 asm ("%r5") = (long int) (_arg2); \
	270	register long int r6 asm ("%r6") = (long int) (_arg3); \
	271	register long int r7 asm ("%r7") = (long int) (_arg4); \
	272	register long int r0 asm ("%r0") = (long int) (_arg5); \
	273	register long int r1 asm ("%r1") = (long int) (_arg6)
	274	#define SUBSTITUTE_ARGS_7(arg1, arg2, arg3, arg4, arg5, arg6, arg7) \
	275	long int _arg1 = (long int) (arg1); \
	276	long int _arg2 = (long int) (arg2); \
	277	long int _arg3 = (long int) (arg3); \
	278	long int _arg4 = (long int) (arg4); \
	279	long int _arg5 = (long int) (arg5); \
	280	long int _arg6 = (long int) (arg6); \
	281	long int _arg7 = (long int) (arg7); \
	282	register long int r4 asm ("%r4") = (long int) (_arg1); \
	283	register long int r5 asm ("%r5") = (long int) (_arg2); \
	284	register long int r6 asm ("%r6") = (long int) (_arg3); \
	285	register long int r7 asm ("%r7") = (long int) (_arg4); \
	286	register long int r0 asm ("%r0") = (long int) (_arg5); \
	287	register long int r1 asm ("%r1") = (long int) (_arg6); \
	288	register long int r2 asm ("%r2") = (long int) (_arg7)
876f9634	289
3846ef75	290	#undef INLINE_SYSCALL
2a051a7d UD	291	#define INLINE_SYSCALL(name, nr, args...) \
	292	({ \
	293	unsigned int resultvar = INTERNAL_SYSCALL (name, , nr, args); \
	294	if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (resultvar, ), 0)) \
	295	{ \
d063d164 UD	296	__set_errno (INTERNAL_SYSCALL_ERRNO (resultvar, )); \
d063d164 UD	297	resultvar = 0xffffffff; \
2a051a7d UD	298	} \
	299	(int) resultvar; })
	300
	301	#undef INTERNAL_SYSCALL
	302	#define INTERNAL_SYSCALL(name, err, nr, args...) \
78ce59f0 UD	303	({ \
	304	unsigned long int resultvar; \
	305	register long int r3 asm ("%r3") = SYS_ify (name); \
	306	SUBSTITUTE_ARGS_##nr(args); \
	307	\
	308	asm volatile (SYSCALL_INST_STR##nr SYSCALL_INST_PAD \
	309	: "=z" (resultvar) \
	310	: "r" (r3) ASMFMT_##nr \
a7bd183f	311	: "memory", "t"); \
78ce59f0	312	\
876f9634	313	(int) resultvar; })
3846ef75	314
362038b0 UD	315	/* The _NCS variant allows non-constant syscall numbers. */
	316	#define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
	317	({ \
	318	unsigned long int resultvar; \
d063d164	319	register long int r3 asm ("%r3") = (name); \
362038b0 UD	320	SUBSTITUTE_ARGS_##nr(args); \
	321	\
	322	asm volatile (SYSCALL_INST_STR##nr SYSCALL_INST_PAD \
	323	: "=z" (resultvar) \
	324	: "r" (r3) ASMFMT_##nr \
a7bd183f	325	: "memory", "t"); \
362038b0 UD	326	\
	327	(int) resultvar; })
	328
2a051a7d UD	329	#undef INTERNAL_SYSCALL_DECL
	330	#define INTERNAL_SYSCALL_DECL(err) do { } while (0)
	331
	332	#undef INTERNAL_SYSCALL_ERROR_P
	333	#define INTERNAL_SYSCALL_ERROR_P(val, err) \
	334	((unsigned int) (val) >= 0xfffff001u)
	335
	336	#undef INTERNAL_SYSCALL_ERRNO
	337	#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val))
	338
3846ef75 UD	339	#endif /* __ASSEMBLER__ */
3846ef75 UD	340
d9038ff8	341	/* Pointer mangling support. */
a3848485	342	#if IS_IN (rtld)
d9038ff8 UD	343	/* We cannot use the thread descriptor because in ld.so we use setjmp
	344	earlier than the descriptor is initialized. Using a global variable
	345	is too complicated here since we have no PC-relative addressing mode. */
	346	#else
	347	# ifdef __ASSEMBLER__
a6df7387 UD	348	# define PTR_MANGLE(reg, tmp) \
	349	stc gbr,tmp; mov.l @(POINTER_GUARD,tmp),tmp; xor tmp,reg
	350	# define PTR_MANGLE2(reg, tmp) xor tmp,reg
	351	# define PTR_DEMANGLE(reg, tmp) PTR_MANGLE (reg, tmp)
	352	# define PTR_DEMANGLE2(reg, tmp) PTR_MANGLE2 (reg, tmp)
d9038ff8 UD	353	# else
	354	# define PTR_MANGLE(var) \
	355	(var) = (void *) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
	356	# define PTR_DEMANGLE(var) PTR_MANGLE (var)
	357	# endif
	358	#endif
	359
3846ef75	360	#endif /* linux/sh/sysdep.h */