Subversion Repositories hf-risc

/* Copyright (C) 2011-2014
   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
   <http://www.gnu.org/licenses/>.  */
 
#ifndef _LINUX_RISCV_SYSDEP_H
#define _LINUX_RISCV_SYSDEP_H 1
 
#include <sysdeps/unix/sysv/linux/generic/sysdep.h>
#include <tls.h>
 
#ifdef __ASSEMBLER__
 
#include <sys/asm.h>
 
#define ENTRY(name) LEAF(name)
 
#undef PSEUDO_END
#define PSEUDO_END(sym) END(sym)
 
#define PSEUDO_NOERRNO(name, syscall_name, args)	\
  .align 2;						\
  ENTRY(name)						\
  li a7, SYS_ify(syscall_name);				\
  scall
 
#define ret_NOERRNO ret
 
#define PSEUDO_ERRVAL(name, syscall_name, args) \
  PSEUDO_NOERRNO(name, syscall_name, args)
 
#define ret_ERRVAL ret
 
#define r0	a0
#define r1	a1
#define MOVE(x,y)	move y , x
 
#define L(label) .L ## label
 
#define PSEUDO(name, syscall_name, args) \
  .align 2;							\
  99: j __syscall_error;					\
  ENTRY(name)							\
  li a7, SYS_ify(syscall_name);					\
  scall;							\
  bltz a0, 99b;							\
L(syse1):
 
#endif /* __ASSEMBLER__ */
 
#include <sysdeps/unix/sysdep.h>
 
#undef SYS_ify
#define SYS_ify(syscall_name)	__NR_##syscall_name
 
#ifndef __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(err);					\
     long result_var = INTERNAL_SYSCALL (name, err, nr, args);		\
     if (result_var < 0)						\
       {								\
	 /* __syscall_error handles result_var <= -4096 corner case */	\
	 extern long __syscall_error (long) attribute_hidden;		\
	 result_var = __syscall_error (result_var);			\
       }								\
     result_var; })
 
#define INTERNAL_SYSCALL_DECL(err) do { } while (0)
 
#define INTERNAL_SYSCALL_ERROR_P(val, err)   ((unsigned long) (val) > -4096UL)
 
#define INTERNAL_SYSCALL_ERRNO(val, err)     (-val)
 
#define INTERNAL_SYSCALL(name, err, nr, args...) \
	internal_syscall##nr (SYS_ify (name), err, args)
 
#define INTERNAL_SYSCALL_NCS(number, err, nr, args...) \
	internal_syscall##nr (number, err, args)
 
#define internal_syscall0(number, err, dummy...)			\
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __a7 asm("a7") = number;				\
	register long __a0 asm("a0");					\
	__asm__ volatile ( 						\
	"scall\n\t" 							\
	: "=r" (__a0)							\
	: "r" (__a7)							\
	: __SYSCALL_CLOBBERS); 						\
	_sys_result = __a0;						\
	}								\
	_sys_result;							\
})
 
#define internal_syscall1(number, err, arg0)				\
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __a7 asm("a7") = number;				\
	register long __a0 asm("a0") = (long) (arg0);			\
	__asm__ volatile ( 						\
	"scall\n\t" 							\
	: "+r" (__a0)							\
	: "r" (__a7)							\
	: __SYSCALL_CLOBBERS); 						\
	_sys_result = __a0;						\
	}								\
	_sys_result;							\
})
 
#define internal_syscall2(number, err, arg0, arg1)	    		\
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __a7 asm("a7") = number;				\
	register long __a0 asm("a0") = (long) (arg0);			\
	register long __a1 asm("a1") = (long) (arg1);			\
	__asm__ volatile ( 						\
	"scall\n\t" 							\
	: "+r" (__a0)							\
	: "r" (__a7), "r"(__a1)						\
	: __SYSCALL_CLOBBERS); 						\
	_sys_result = __a0;						\
	}								\
	_sys_result;							\
})
 
#define internal_syscall3(number, err, arg0, arg1, arg2)      		\
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __a7 asm("a7") = number;				\
	register long __a0 asm("a0") = (long) (arg0);			\
	register long __a1 asm("a1") = (long) (arg1);			\
	register long __a2 asm("a2") = (long) (arg2);			\
	__asm__ volatile ( 						\
	"scall\n\t" 							\
	: "+r" (__a0)							\
	: "r" (__a7), "r"(__a1), "r"(__a2)				\
	: __SYSCALL_CLOBBERS); 						\
	_sys_result = __a0;						\
	}								\
	_sys_result;							\
})
 
#define internal_syscall4(number, err, arg0, arg1, arg2, arg3)	  \
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __a7 asm("a7") = number;				\
	register long __a0 asm("a0") = (long) (arg0);			\
	register long __a1 asm("a1") = (long) (arg1);			\
	register long __a2 asm("a2") = (long) (arg2);			\
	register long __a3 asm("a3") = (long) (arg3);			\
	__asm__ volatile ( 						\
	"scall\n\t" 							\
	: "+r" (__a0)							\
	: "r" (__a7), "r"(__a1), "r"(__a2), "r"(__a3)			\
	: __SYSCALL_CLOBBERS); 						\
	_sys_result = __a0;						\
	}								\
	_sys_result;							\
})
 
#define internal_syscall5(number, err, arg0, arg1, arg2, arg3, arg4)    \
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __a7 asm("a7") = number;				\
	register long __a0 asm("a0") = (long) (arg0);			\
	register long __a1 asm("a1") = (long) (arg1);			\
	register long __a2 asm("a2") = (long) (arg2);			\
	register long __a3 asm("a3") = (long) (arg3);			\
	register long __a4 asm("a4") = (long) (arg4);			\
	__asm__ volatile ( 						\
	"scall\n\t" 							\
	: "+r" (__a0)							\
	: "r" (__a7), "r"(__a1), "r"(__a2), "r"(__a3), "r"(__a4)	\
	: __SYSCALL_CLOBBERS); 						\
	_sys_result = __a0;						\
	}								\
	_sys_result;							\
})
 
#define internal_syscall6(number, err, arg0, arg1, arg2, arg3, arg4, arg5) \
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __a7 asm("a7") = number;				\
	register long __a0 asm("a0") = (long) (arg0);			\
	register long __a1 asm("a1") = (long) (arg1);			\
	register long __a2 asm("a2") = (long) (arg2);			\
	register long __a3 asm("a3") = (long) (arg3);			\
	register long __a4 asm("a4") = (long) (arg4);			\
	register long __a5 asm("a5") = (long) (arg5);			\
	__asm__ volatile ( 						\
	"scall\n\t" 							\
	: "+r" (__a0)							\
	: "r" (__a7), "r"(__a1), "r"(__a2), "r"(__a3), "r"(__a4), "r"(__a5)	\
	: __SYSCALL_CLOBBERS); 						\
	_sys_result = __a0;						\
	}								\
	_sys_result;							\
})
 
#define internal_syscall7(number, err, arg0, arg1, arg2, arg3, arg4, arg5, arg6) \
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __a7 asm("a7") = number;				\
	register long __a0 asm("a0") = (long) (arg0);			\
	register long __a1 asm("a1") = (long) (arg1);			\
	register long __a2 asm("a2") = (long) (arg2);			\
	register long __a3 asm("a3") = (long) (arg3);			\
	register long __a4 asm("a4") = (long) (arg4);			\
	register long __a5 asm("a5") = (long) (arg5);			\
	register long __a6 asm("a6") = (long) (arg6);			\
	__asm__ volatile ( 						\
	"scall\n\t" 							\
	: "+r" (__a0)							\
	: "r" (__a7), "r"(__a1), "r"(__a2), "r"(__a3), "r"(__a4), "r"(__a5), "r"(__a6)	\
	: __SYSCALL_CLOBBERS); 						\
	_sys_result = __a0;						\
	}								\
	_sys_result;							\
})
 
#define __SYSCALL_CLOBBERS "memory"
#endif /* ! __ASSEMBLER__ */
 
/* Pointer mangling is not supported.  */
#define PTR_MANGLE(var) (void) (var)
#define PTR_DEMANGLE(var) (void) (var)
 
#endif /* linux/mips/sysdep.h */