2018-11-20 05:13:59 -05:00
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##
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2018-11-20 05:16:29 -05:00
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## This file is part of the "Coroutine" project and released under the MIT License.
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2018-11-20 05:13:59 -05:00
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##
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## Created by Samuel Williams on 3/11/2018.
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## Copyright, 2018, by Samuel Williams. All rights reserved.
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##
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2019-05-16 05:58:17 -04:00
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#define TOKEN_PASTE(x,y) x##y
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#define PREFIXED_SYMBOL(prefix,name) TOKEN_PASTE(prefix,name)
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2018-11-20 05:13:59 -05:00
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2019-05-16 05:58:17 -04:00
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.text
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2018-11-20 05:13:59 -05:00
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2019-05-16 05:58:17 -04:00
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.globl PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer)
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PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
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2018-11-20 05:13:59 -05:00
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# Save caller registers
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pushl %ebp
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pushl %ebx
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pushl %edi
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pushl %esi
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# Save caller stack pointer
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movl %esp, (%ecx)
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# Restore callee stack pointer
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movl (%edx), %esp
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# Restore callee stack
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popl %esi
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popl %edi
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popl %ebx
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popl %ebp
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# Save the first argument as the return value
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movl %ecx, %eax
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# Jump to the address on the stack
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ret
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2018-12-11 18:49:33 -05:00
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#if defined(__linux__) && defined(__ELF__)
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.section .note.GNU-stack,"",%progbits
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#endif
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