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-rw-r--r--coroutine/x86/Context.s39
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diff --git a/coroutine/x86/Context.s b/coroutine/x86/Context.s
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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. All rights reserved.
-##
-
-.text
-
-.globl coroutine_transfer
-coroutine_transfer:
-
-# For older linkers
-.globl _coroutine_transfer
-_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