diff options
Diffstat (limited to 'coroutine/x86/Context.s')
| -rw-r--r-- | coroutine/x86/Context.s | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/coroutine/x86/Context.s b/coroutine/x86/Context.s new file mode 100644 index 0000000000..9b319cd8df --- /dev/null +++ b/coroutine/x86/Context.s @@ -0,0 +1,39 @@ +## +## File 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 |