| 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 | |
| 35 | #ifndef _MACHINE_ASM_H_ |
| 36 | #define _MACHINE_ASM_H_ |
| 37 | |
| 38 | #undef __FBSDID |
| 39 | #if !defined(lint) && !defined(STRIP_FBSDID) |
| 40 | #define __FBSDID(s) .ident s |
| 41 | #else |
| 42 | #define __FBSDID(s) /* nothing */ |
| 43 | #endif /* not lint and not STRIP_FBSDID */ |
| 44 | |
| 45 | #define _C_LABEL(x) x |
| 46 | |
| 47 | #define ENTRY(sym) \ |
| 48 | .text; .globl sym; .type sym,@function; .align 4; sym: .cfi_startproc; |
| 49 | #define END(sym) .cfi_endproc; .size sym, . - sym |
| 50 | |
| 51 | #define EENTRY(sym) \ |
| 52 | .globl sym; sym: |
| 53 | #define EEND(sym) |
| 54 | |
| 55 | #define WEAK_REFERENCE(sym, alias) \ |
| 56 | .weak alias; \ |
| 57 | .set alias,sym |
| 58 | |
| 59 | #define SET_FAULT_HANDLER(handler, tmp) \ |
| 60 | ld tmp, PC_CURTHREAD(tp); \ |
| 61 | ld tmp, TD_PCB(tmp); /* Load the pcb */ \ |
| 62 | sd handler, PCB_ONFAULT(tmp) /* Set the handler */ |
| 63 | |
| 64 | #define ENTER_USER_ACCESS(tmp) \ |
| 65 | li tmp, SSTATUS_SUM; \ |
| 66 | csrs sstatus, tmp |
| 67 | |
| 68 | #define EXIT_USER_ACCESS(tmp) \ |
| 69 | li tmp, SSTATUS_SUM; \ |
| 70 | csrc sstatus, tmp |
| 71 | |
| 72 | #define SBI_CALL(ext, func) \ |
| 73 | li a7, ext; \ |
| 74 | li a6, func; \ |
| 75 | ecall |
| 76 | |
| 77 | #endif /* _MACHINE_ASM_H_ */ |