2018-11-20 04:59:10 -05:00
|
|
|
##
|
2018-11-20 05:16:29 -05:00
|
|
|
## This file is part of the "Coroutine" project and released under the MIT License.
|
2018-11-20 04:59:10 -05:00
|
|
|
##
|
|
|
|
|
## Created by Samuel Williams on 10/5/2018.
|
2019-12-27 18:41:47 -05:00
|
|
|
## Copyright, 2018, by Samuel Williams.
|
2018-11-20 04:59:10 -05:00
|
|
|
##
|
|
|
|
|
|
2019-05-16 05:58:17 -04:00
|
|
|
#define TOKEN_PASTE(x,y) x##y
|
|
|
|
|
#define PREFIXED_SYMBOL(prefix,name) TOKEN_PASTE(prefix,name)
|
|
|
|
|
|
2018-11-20 04:59:10 -05:00
|
|
|
.text
|
|
|
|
|
|
2019-05-16 05:58:17 -04:00
|
|
|
.globl PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer)
|
|
|
|
|
PREFIXED_SYMBOL(SYMBOL_PREFIX,coroutine_transfer):
|
2018-11-20 04:59:10 -05:00
|
|
|
|
|
|
|
|
# Save caller state
|
|
|
|
|
pushq %rbp
|
|
|
|
|
pushq %rbx
|
|
|
|
|
pushq %r12
|
|
|
|
|
pushq %r13
|
|
|
|
|
pushq %r14
|
|
|
|
|
pushq %r15
|
2018-11-20 05:17:00 -05:00
|
|
|
|
2018-11-20 04:59:10 -05:00
|
|
|
# Save caller stack pointer
|
|
|
|
|
movq %rsp, (%rdi)
|
2018-11-20 05:17:00 -05:00
|
|
|
|
2018-11-20 04:59:10 -05:00
|
|
|
# Restore callee stack pointer
|
|
|
|
|
movq (%rsi), %rsp
|
2018-11-20 05:17:00 -05:00
|
|
|
|
2019-06-24 07:54:19 -04:00
|
|
|
# Restore callee state
|
2018-11-20 04:59:10 -05:00
|
|
|
popq %r15
|
|
|
|
|
popq %r14
|
|
|
|
|
popq %r13
|
|
|
|
|
popq %r12
|
|
|
|
|
popq %rbx
|
|
|
|
|
popq %rbp
|
2018-11-20 05:17:00 -05:00
|
|
|
|
2018-11-20 04:59:10 -05:00
|
|
|
# Put the first argument into the return value
|
2018-11-20 04:59:23 -05:00
|
|
|
movq %rdi, %rax
|
2018-11-20 05:17:00 -05:00
|
|
|
|
2018-11-20 04:59:10 -05:00
|
|
|
# We pop the return address and jump to it
|
|
|
|
|
ret
|
2018-11-24 06:35:34 -05:00
|
|
|
|
|
|
|
|
#if defined(__linux__) && defined(__ELF__)
|
|
|
|
|
.section .note.GNU-stack,"",%progbits
|
|
|
|
|
#endif
|
