1 /*- 2 * Copyright (c) 2014 Andrew Turner 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _MACHINE_ASM_H_ 30 #define _MACHINE_ASM_H_ 31 32 #undef __FBSDID 33 #if !defined(lint) && !defined(STRIP_FBSDID) 34 #define __FBSDID(s) .ident s 35 #else 36 #define __FBSDID(s) /* nothing */ 37 #endif 38 39 #define _C_LABEL(x) x 40 41 #define ENTRY(sym) \ 42 .text; .globl sym; .align 2; .type sym,#function; sym: 43 #define EENTRY(sym) \ 44 .globl sym; sym: 45 #define END(sym) .size sym, . - sym 46 #define EEND(sym) 47 48 #define WEAK_REFERENCE(sym, alias) \ 49 .weak alias; \ 50 .set alias,sym 51 52 #define UINT64_C(x) (x) 53 54 #if defined(PIC) 55 #define PIC_SYM(x,y) x ## @ ## y 56 #else 57 #define PIC_SYM(x,y) x 58 #endif 59 60 /* 61 * Sets the trap fault handler. The exception handler will return to the 62 * address in the handler register on a data abort or the xzr register to 63 * clear the handler. The tmp parameter should be a register able to hold 64 * the temporary data. 65 */ 66 #define SET_FAULT_HANDLER(handler, tmp) \ 67 ldr tmp, [x18, #PC_CURTHREAD]; /* Load curthread */ \ 68 ldr tmp, [tmp, #TD_PCB]; /* Load the pcb */ \ 69 str handler, [tmp, #PCB_ONFAULT] /* Set the handler */ 70 71 #endif /* _MACHINE_ASM_H_ */ 72