1 /*- 2 * Copyright (c) 2015-2018 Ruslan Bukin <br@bsdpad.com> 3 * All rights reserved. 4 * 5 * Portions of this software were developed by SRI International and the 6 * University of Cambridge Computer Laboratory under DARPA/AFRL contract 7 * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme. 8 * 9 * Portions of this software were developed by the University of Cambridge 10 * Computer Laboratory as part of the CTSRD Project, with support from the 11 * UK Higher Education Innovation Fund (HEIF). 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $FreeBSD$ 35 */ 36 37 #ifndef _MACHINE_ASM_H_ 38 #define _MACHINE_ASM_H_ 39 40 #undef __FBSDID 41 #if !defined(lint) && !defined(STRIP_FBSDID) 42 #define __FBSDID(s) .ident s 43 #else 44 #define __FBSDID(s) /* nothing */ 45 #endif /* not lint and not STRIP_FBSDID */ 46 47 #define _C_LABEL(x) x 48 49 #define ENTRY(sym) \ 50 .text; .globl sym; .type sym,@function; .align 4; sym: .cfi_startproc; 51 #define END(sym) .cfi_endproc; .size sym, . - sym 52 53 #define EENTRY(sym) \ 54 .globl sym; sym: 55 #define EEND(sym) 56 57 #define WEAK_REFERENCE(sym, alias) \ 58 .weak alias; \ 59 .set alias,sym 60 61 #define SET_FAULT_HANDLER(handler, tmp) \ 62 ld tmp, PC_CURTHREAD(tp); \ 63 ld tmp, TD_PCB(tmp); /* Load the pcb */ \ 64 sd handler, PCB_ONFAULT(tmp) /* Set the handler */ 65 66 #define ENTER_USER_ACCESS(tmp) \ 67 li tmp, SSTATUS_SUM; \ 68 csrs sstatus, tmp 69 70 #define EXIT_USER_ACCESS(tmp) \ 71 li tmp, SSTATUS_SUM; \ 72 csrc sstatus, tmp 73 74 #endif /* _MACHINE_ASM_H_ */ 75