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https://github.com/freebsd/freebsd-src
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73 lines
2.7 KiB
C
73 lines
2.7 KiB
C
/*-
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* Copyright (c) 2015-2018 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* Portions of this software were developed by SRI International and the
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* University of Cambridge Computer Laboratory under DARPA/AFRL contract
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* FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
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*
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* Portions of this software were developed by the University of Cambridge
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* Computer Laboratory as part of the CTSRD Project, with support from the
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* UK Higher Education Innovation Fund (HEIF).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _MACHINE_ASM_H_
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#define _MACHINE_ASM_H_
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#undef __FBSDID
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#if !defined(lint) && !defined(STRIP_FBSDID)
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#define __FBSDID(s) .ident s
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#else
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#define __FBSDID(s) /* nothing */
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#endif /* not lint and not STRIP_FBSDID */
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#define _C_LABEL(x) x
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#define ENTRY(sym) \
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.text; .globl sym; .type sym,@function; .align 4; sym: .cfi_startproc;
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#define END(sym) .cfi_endproc; .size sym, . - sym
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#define EENTRY(sym) \
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.globl sym; sym:
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#define EEND(sym)
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#define WEAK_REFERENCE(sym, alias) \
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.weak alias; \
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.set alias,sym
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#define SET_FAULT_HANDLER(handler, tmp) \
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ld tmp, PC_CURTHREAD(tp); \
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ld tmp, TD_PCB(tmp); /* Load the pcb */ \
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sd handler, PCB_ONFAULT(tmp) /* Set the handler */
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#define ENTER_USER_ACCESS(tmp) \
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li tmp, SSTATUS_SUM; \
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csrs sstatus, tmp
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#define EXIT_USER_ACCESS(tmp) \
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li tmp, SSTATUS_SUM; \
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csrc sstatus, tmp
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#endif /* _MACHINE_ASM_H_ */
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