2018-11-20 05:18:16 -05:00
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##
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## This file is part of the "Coroutine" project and released under the MIT License.
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##
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## Created by Samuel Williams on 4/11/2018.
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2019-12-27 18:41:47 -05:00
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## Copyright, 2018, by Samuel Williams.
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2018-11-20 05:18:16 -05:00
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##
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.text
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.globl coroutine_transfer
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coroutine_transfer:
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# Save the thread information block:
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pushq %gs:8
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pushq %gs:16
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# Save caller registers:
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pushq %rbp
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pushq %rbx
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pushq %rdi
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pushq %rsi
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pushq %r12
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pushq %r13
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pushq %r14
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pushq %r15
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movaps %xmm15, -168(%rsp)
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movaps %xmm14, -152(%rsp)
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movaps %xmm13, -136(%rsp)
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movaps %xmm12, -120(%rsp)
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movaps %xmm11, -104(%rsp)
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movaps %xmm10, -88(%rsp)
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movaps %xmm9, -72(%rsp)
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movaps %xmm8, -56(%rsp)
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movaps %xmm7, -40(%rsp)
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movaps %xmm6, -24(%rsp)
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2018-11-23 21:31:11 -05:00
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# Save caller stack pointer:
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mov %rsp, (%rcx)
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# Restore callee stack pointer:
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mov (%rdx), %rsp
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movaps -24(%rsp), %xmm6
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movaps -40(%rsp), %xmm7
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movaps -56(%rsp), %xmm8
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movaps -72(%rsp), %xmm9
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movaps -88(%rsp), %xmm10
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movaps -104(%rsp), %xmm11
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movaps -120(%rsp), %xmm12
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movaps -136(%rsp), %xmm13
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movaps -152(%rsp), %xmm14
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movaps -168(%rsp), %xmm15
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2018-11-20 05:18:16 -05:00
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# Restore callee stack:
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popq %r15
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popq %r14
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popq %r13
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popq %r12
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popq %rsi
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popq %rdi
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popq %rbx
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popq %rbp
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# Restore the thread information block:
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popq %gs:16
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popq %gs:8
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# Put the first argument into the return value:
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mov %rcx, %rax
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# We pop the return address and jump to it:
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ret
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.globl coroutine_trampoline
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coroutine_trampoline:
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# Do not remove this. This forces 16-byte alignment when entering the coroutine.
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ret
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