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