bus_space_asm.S

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    1 /*-
    2  * Copyright (c) 2016 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 #include <machine/asm.h>
   36 
   37 __FBSDID("$FreeBSD: releng/11.0/sys/riscv/riscv/bus_space_asm.S 298635 2016-04-26 12:45:01Z br $");
   38 
   39 ENTRY(generic_bs_r_1)
   40         add     a3, a1, a2
   41         lb      a0, 0(a3)
   42         ret
   43 END(generic_bs_r_1)
   44 
   45 ENTRY(generic_bs_r_2)
   46         add     a3, a1, a2
   47         lh      a0, 0(a3)
   48         ret
   49 END(generic_bs_r_2)
   50 
   51 ENTRY(generic_bs_r_4)
   52         add     a3, a1, a2
   53         lw      a0, 0(a3)
   54         ret
   55 END(generic_bs_r_4)
   56 
   57 ENTRY(generic_bs_r_8)
   58         add     a3, a1, a2
   59         ld      a0, 0(a3)
   60         ret
   61 END(generic_bs_r_8)
   62 
   63 ENTRY(generic_bs_w_1)
   64         add     a4, a1, a2
   65         sb      a3, 0(a4)
   66         ret
   67 END(generic_bs_w_1)
   68 
   69 ENTRY(generic_bs_w_2)
   70         add     a4, a1, a2
   71         sh      a3, 0(a4)
   72         ret
   73 END(generic_bs_w_2)
   74 
   75 ENTRY(generic_bs_w_4)
   76         add     a4, a1, a2
   77         sw      a3, 0(a4)
   78         ret
   79 END(generic_bs_w_4)
   80 
   81 ENTRY(generic_bs_w_8)
   82         add     a4, a1, a2
   83         sd      a3, 0(a4)
   84         ret
   85 END(generic_bs_w_8)

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sys/riscv/riscv/bus_space_asm.S