e46bcb7d38
Replace conditional branches with trampolines to unconditional branches when jumping to labels within other compilation units. This increases the offset range from +-1 MiB to +-128 MiB.
58 lines
1.8 KiB
ArmAsm
58 lines
1.8 KiB
ArmAsm
/*-
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* Copyright (c) 2014 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Andrew Turner under
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* sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <machine/asm.h>
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__FBSDID("$FreeBSD$");
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#include <machine/setjmp.h>
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ENTRY(sigsetjmp)
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cmp x1, #0
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b.eq 1f
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b _C_LABEL(setjmp)
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1:
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b _C_LABEL(_setjmp)
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END(sigsetjmp)
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ENTRY(siglongjmp)
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/* Load the _setjmp magic */
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ldr x2, .Lmagic
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ldr x3, [x0]
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/* Check the magic */
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cmp x2, x3
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b.eq 1f
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b _C_LABEL(longjmp)
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1:
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b _C_LABEL(_longjmp)
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.align 3
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.Lmagic:
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.quad _JB_MAGIC__SETJMP
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END(siglongjmp)
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