setjmp_arm.S

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    1 /*-
    2  * Copyright 2004-2014 Olivier Houchard <cognet@FreeBSD.org>
    3  * Copyright 2012-2014 Ian Lepore <ian@FreeBSD.org>
    4  * Copyright 2013-2014 Andrew Turner <andrew@FreeBSD.org>
    5  * Copyright 2014 Svatopluk Kraus <onwahe@gmail.com>
    6  * Copyright 2014 Michal Meloun <meloun@miracle.cz>
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  */
   30 
   31 
   32 #if defined(__arm__) && !defined(__aarch64__)
   33 
   34 #if defined(__thumb2__)
   35 #define _FUNC_MODE      .code 16; .thumb_func
   36 #else
   37 #define _FUNC_MODE      .code 32
   38 #endif
   39 
   40 #define ENTRY(x) \
   41         .text; \
   42         .syntax unified; \
   43         .balign 2; \
   44         .global x; \
   45         .type x,#function; \
   46         _FUNC_MODE; \
   47 x:
   48 
   49 #define END(x) \
   50         .size x, . - x;
   51 
   52 #define RET     bx      lr
   53 
   54 
   55 /*
   56  * setjump + longjmp
   57  */
   58 ENTRY(setjmp)
   59 #if defined(__thumb2__)
   60         mov     ip, sp
   61         stmia   r0, {r4-r12,r14}
   62 #else
   63         stmia   r0, {r4-r14}
   64 #endif
   65         mov     r0, #0x00000000
   66         RET
   67 END(setjmp)
   68 
   69 ENTRY(longjmp)
   70 #if defined(__thumb2__)
   71         ldmia   r0, {r4-r12,r14}
   72         mov     sp, ip
   73 #else
   74         ldmia   r0, {r4-r14}
   75 #endif
   76         mov     r0, #0x00000001
   77         RET
   78 END(longjmp)
   79 
   80 #ifdef __ELF__
   81 .section .note.GNU-stack,"",%progbits
   82 #endif
   83 
   84 #endif

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FreeBSD/Linux Kernel Cross Reference sys/contrib/openzfs/module/lua/setjmp/setjmp_arm.S

FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/module/lua/setjmp/setjmp_arm.S