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lib/libsys/riscv/SYS.h
- This file was copied from lib/libc/aarch64/sys/cerror.S.
/*- | /*- | ||||
* Copyright (c) 2014 Andrew Turner | * Copyright (c) 2014 Andrew Turner | ||||
* Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com> | |||||
* All rights reserved. | * All rights reserved. | ||||
* | * | ||||
* Portions of this software were developed by SRI International and the | |||||
* University of Cambridge Computer Laboratory under DARPA/AFRL contract | |||||
* FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme. | |||||
* | |||||
* Portions of this software were developed by the University of Cambridge | |||||
* Computer Laboratory as part of the CTSRD Project, with support from the | |||||
* UK Higher Education Innovation Fund (HEIF). | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | * Redistribution and use in source and binary forms, with or without | ||||
* modification, are permitted provided that the following conditions | * modification, are permitted provided that the following conditions | ||||
* are met: | * are met: | ||||
* 1. Redistributions of source code must retain the above copyright | * 1. Redistributions of source code must retain the above copyright | ||||
* notice, this list of conditions and the following disclaimer. | * notice, this list of conditions and the following disclaimer. | ||||
* 2. Redistributions in binary form must reproduce the above copyright | * 2. Redistributions in binary form must reproduce the above copyright | ||||
* notice, this list of conditions and the following disclaimer in the | * notice, this list of conditions and the following disclaimer in the | ||||
* documentation and/or other materials provided with the distribution. | * documentation and/or other materials provided with the distribution. | ||||
* | * | ||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | ||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | ||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||||
* SUCH DAMAGE. | * SUCH DAMAGE. | ||||
* | * | ||||
* $FreeBSD$ | |||||
*/ | */ | ||||
#include <sys/syscall.h> | |||||
#include <machine/asm.h> | #include <machine/asm.h> | ||||
__FBSDID("$FreeBSD$"); | |||||
ENTRY(cerror) | #define _SYSCALL(name) \ | ||||
.hidden cerror | li t0, SYS_ ## name; \ | ||||
sub sp, sp, #16 | ecall | ||||
stp x0, lr, [sp] | |||||
bl _C_LABEL(__error) | #define SYSCALL(name) \ | ||||
ldp x1, lr, [sp] | ENTRY(__sys_##name); \ | ||||
str w1, [x0] | WEAK_REFERENCE(__sys_##name, name); \ | ||||
movn x0, #0 | WEAK_REFERENCE(__sys_##name, _##name); \ | ||||
movn x1, #0 | _SYSCALL(name); \ | ||||
add sp, sp, #16 | ret; \ | ||||
ret | END(__sys_##name) | ||||
END(cerror) | |||||
#define PSEUDO(name) \ | |||||
ENTRY(__sys_##name); \ | |||||
WEAK_REFERENCE(__sys_##name, _##name); \ | |||||
_SYSCALL(name); \ | |||||
bnez t0, 1f; \ | |||||
ret; \ | |||||
1: la t1, cerror; \ | |||||
jr t1; \ | |||||
END(__sys_##name) | |||||
#define RSYSCALL(name) \ | |||||
ENTRY(__sys_##name); \ | |||||
WEAK_REFERENCE(__sys_##name, name); \ | |||||
WEAK_REFERENCE(__sys_##name, _##name); \ | |||||
_SYSCALL(name); \ | |||||
bnez t0, 1f; \ | |||||
ret; \ | |||||
1: la t1, cerror; \ | |||||
jr t1; \ | |||||
END(__sys_##name) |