xref: /freebsd/lib/libsys/riscv/SYS.h (revision f21777224411fee14b8aea6d8465bd6c2b318429)
18269e767SBrooks Davis /*-
28269e767SBrooks Davis  * Copyright (c) 2014 Andrew Turner
38269e767SBrooks Davis  * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com>
48269e767SBrooks Davis  * All rights reserved.
58269e767SBrooks Davis  *
68269e767SBrooks Davis  * Portions of this software were developed by SRI International and the
78269e767SBrooks Davis  * University of Cambridge Computer Laboratory under DARPA/AFRL contract
88269e767SBrooks Davis  * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
98269e767SBrooks Davis  *
108269e767SBrooks Davis  * Portions of this software were developed by the University of Cambridge
118269e767SBrooks Davis  * Computer Laboratory as part of the CTSRD Project, with support from the
128269e767SBrooks Davis  * UK Higher Education Innovation Fund (HEIF).
138269e767SBrooks Davis  *
148269e767SBrooks Davis  * Redistribution and use in source and binary forms, with or without
158269e767SBrooks Davis  * modification, are permitted provided that the following conditions
168269e767SBrooks Davis  * are met:
178269e767SBrooks Davis  * 1. Redistributions of source code must retain the above copyright
188269e767SBrooks Davis  *    notice, this list of conditions and the following disclaimer.
198269e767SBrooks Davis  * 2. Redistributions in binary form must reproduce the above copyright
208269e767SBrooks Davis  *    notice, this list of conditions and the following disclaimer in the
218269e767SBrooks Davis  *    documentation and/or other materials provided with the distribution.
228269e767SBrooks Davis  *
238269e767SBrooks Davis  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
248269e767SBrooks Davis  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
258269e767SBrooks Davis  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
268269e767SBrooks Davis  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
278269e767SBrooks Davis  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
288269e767SBrooks Davis  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
298269e767SBrooks Davis  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
308269e767SBrooks Davis  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
318269e767SBrooks Davis  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
328269e767SBrooks Davis  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
338269e767SBrooks Davis  * SUCH DAMAGE.
348269e767SBrooks Davis  */
358269e767SBrooks Davis 
368269e767SBrooks Davis #include <sys/syscall.h>
378269e767SBrooks Davis #include <machine/asm.h>
388269e767SBrooks Davis 
398269e767SBrooks Davis #define	_SYSCALL(name)						\
408269e767SBrooks Davis 	li	t0, SYS_ ## name;				\
418269e767SBrooks Davis 	ecall
428269e767SBrooks Davis 
43*f2177722SBrooks Davis #ifndef _SYSCALL_BODY
448269e767SBrooks Davis #define	_SYSCALL_BODY(name)					\
458269e767SBrooks Davis 	_SYSCALL(name);						\
468269e767SBrooks Davis 	bnez	t0, 1f; 					\
478269e767SBrooks Davis 	ret;							\
488269e767SBrooks Davis 1:	la	t1, cerror;					\
498269e767SBrooks Davis 	jr	t1
50*f2177722SBrooks Davis #endif
518269e767SBrooks Davis 
528269e767SBrooks Davis #define	PSEUDO(name)						\
538269e767SBrooks Davis ENTRY(__sys_##name);						\
548269e767SBrooks Davis 	WEAK_REFERENCE(__sys_##name, _##name);			\
558269e767SBrooks Davis 	_SYSCALL_BODY(name);					\
568269e767SBrooks Davis END(__sys_##name)
578269e767SBrooks Davis 
588269e767SBrooks Davis #define	RSYSCALL(name)						\
598269e767SBrooks Davis ENTRY(__sys_##name);						\
608269e767SBrooks Davis 	WEAK_REFERENCE(__sys_##name, name);			\
618269e767SBrooks Davis 	WEAK_REFERENCE(__sys_##name, _##name);			\
628269e767SBrooks Davis 	_SYSCALL_BODY(name);					\
638269e767SBrooks Davis END(__sys_##name)
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