/* Copyright (C) 1997-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Miguel de Icaza <miguel@gnu.ai.mit.edu>, January 1997.

   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

   <http://www.gnu.org/licenses/>.  */

#ifndef _LINUX_SPARC32_SYSDEP_H

#define _LINUX_SPARC32_SYSDEP_H 1

#include <sysdeps/unix/sysv/linux/sparc/sysdep.h>

#if IS_IN (rtld)

# include <dl-sysdep.h>		/* Defines RTLD_PRIVATE_ERRNO.  */

#endif

#include <tls.h>

#undef SYS_ify

#define SYS_ify(syscall_name) __NR_##syscall_name

#ifdef __ASSEMBLER__

#define LOADSYSCALL(x) mov __NR_##x, %g1

#undef PSEUDO

#define PSEUDO(name, syscall_name, args)	\

	.text;					\

ENTRY(name);					\

	LOADSYSCALL(syscall_name);		\

	ta		0x10;			\

	bcc		1f;			\

	 nop;					\

	SYSCALL_ERROR_HANDLER			\

1:

#undef PSEUDO_NOERRNO

#define PSEUDO_NOERRNO(name, syscall_name, args)\

	.text;					\

ENTRY(name);					\

	LOADSYSCALL(syscall_name);		\

	ta		0x10;

#undef PSEUDO_ERRVAL

#define PSEUDO_ERRVAL(name, syscall_name, args)	\

	.text;					\

ENTRY(name);					\

	LOADSYSCALL(syscall_name);		\

	ta		0x10;

#undef PSEUDO_END

#define PSEUDO_END(name)			\

	END(name)

#ifndef PIC

# define SYSCALL_ERROR_HANDLER			\

	mov	%o7, %g1;			\

	call	__syscall_error;		\

	 mov	%g1, %o7;

#else

# if RTLD_PRIVATE_ERRNO

#  define SYSCALL_ERROR_HANDLER			\

0:	SETUP_PIC_REG_LEAF(o2,g1)		\

	sethi	%gdop_hix22(rtld_errno), %g1;	\

	xor	%g1, %gdop_lox10(rtld_errno), %g1;\

	ld	[%o2 + %g1], %g1, %gdop(rtld_errno); \

	st	%o0, [%g1];			\

	jmp	%o7 + 8;			\

	 mov	-1, %o0;

# 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					\

0:	SETUP_PIC_REG_LEAF(o2,g1)				\

	sethi	%tie_hi22(SYSCALL_ERROR_ERRNO), %g1;		\

	add	%g1, %tie_lo10(SYSCALL_ERROR_ERRNO), %g1;	\

	ld	[%o2 + %g1], %g1, %tie_ld(SYSCALL_ERROR_ERRNO);	\

	st	%o0, [%g7 + %g1];				\

	jmp	%o7 + 8;					\

	 mov	-1, %o0;

# else

#  define SYSCALL_ERROR_HANDLER		\

0:	SETUP_PIC_REG_LEAF(o2,g1)	\

	sethi	%gdop_hix22(errno), %g1;\

	xor	%g1, %gdop_lox10(errno), %g1;\

	ld	[%o2 + %g1], %g1, %gdop(errno);\

	st	%o0, [%g1];		\

	jmp	%o7 + 8;		\

	 mov	-1, %o0;

# endif	/* _LIBC_REENTRANT */

#endif	/* PIC */

#else  /* __ASSEMBLER__ */

#define __SYSCALL_STRING						\

	"ta	0x10;"							\

	"bcc	1f;"							\

	" mov	0, %%g1;"						\

	"sub	%%g0, %%o0, %%o0;"					\

	"mov	1, %%g1;"						\

	"1:"

#define __SYSCALL_CLOBBERS						\

	"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",			\

	"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",		\

	"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",		\

	"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",		\

	"cc", "memory"

#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.  */

#else

# ifdef __ASSEMBLER__

#  define PTR_MANGLE(dreg, reg, tmpreg) \

  ld	[%g7 + POINTER_GUARD], tmpreg; \

  xor	reg, tmpreg, dreg

#  define PTR_DEMANGLE(dreg, reg, tmpreg) PTR_MANGLE (dreg, reg, tmpreg)

#  define PTR_MANGLE2(dreg, reg, tmpreg) \

  xor	reg, tmpreg, dreg

#  define PTR_DEMANGLE2(dreg, reg, tmpreg) PTR_MANGLE2 (dreg, reg, tmpreg)

# else

#  define PTR_MANGLE(var) \

  (var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())

#  define PTR_DEMANGLE(var)     PTR_MANGLE (var)

# endif

#endif

#endif /* linux/sparc/sysdep.h */