mirror of
https://github.com/RGBCube/serenity
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57 lines
1.9 KiB
ArmAsm
57 lines
1.9 KiB
ArmAsm
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND 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 ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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.global setjmp
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setjmp:
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mov 4(%esp), %eax
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mov %ebx, 0(%eax)
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mov %esi, 4(%eax)
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mov %edi, 8(%eax)
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mov %ebp, 12(%eax)
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lea 4(%esp), %ecx
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mov %ecx, 16(%eax)
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mov (%esp), %ecx
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mov %ecx, 20(%eax)
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xor %eax, %eax
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ret
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.global longjmp
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longjmp:
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mov 4(%esp), %edx
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mov 8(%esp), %eax
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mov 0(%edx), %ebx
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mov 4(%edx), %esi
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mov 8(%edx), %edi
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mov 12(%edx), %ebp
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mov 16(%edx), %ecx
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mov %ecx, %esp
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mov 20(%edx), %ecx
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test %eax, %eax
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jnz .nonzero
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mov 1, %eax
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.nonzero:
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jmp *%ecx
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