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Merged
ChuanqiXu9 merged 2 commits into from
Apr 8, 2026
Merged

support uthread on windows with msvc #467

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ada2dfa
support uthread on windows with msvc
c8ef Apr 4, 2026
bd1b49f
fix windows test time usage
c8ef Apr 5, 2026
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22 changes: 21 additions & 1 deletion CMakeLists.txt
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Original file line number Diff line number Diff line change
@@ -1,10 +1,25 @@
cmake_minimum_required(VERSION 3.15)

if(POLICY CMP0194)
cmake_policy(SET CMP0194 NEW)
endif()

project(async_simple
VERSION 1.3
LANGUAGES CXX C ASM)
LANGUAGES C CXX)

if(MSVC)
enable_language(ASM_MASM)
else()
enable_language(ASM)
endif()

set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

if(WIN32)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
endif()

enable_testing()

set(CMAKE_CXX_STANDARD 20)
Expand Down Expand Up @@ -158,6 +173,11 @@ elseif ("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin") # uname -s
set(UTHREAD ON)
message("-- Uthread on")
endif()
elseif("${CMAKE_SYSTEM_NAME}" STREQUAL "Windows")
if("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "AMD64" AND MSVC)
set(UTHREAD ON)
message("-- Uthread on")
endif()
endif()
# End Detecing Uthread

Expand Down
6 changes: 5 additions & 1 deletion async_simple/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,11 @@ if(${UTHREAD})
if (CMAKE_BUILD_TYPE STREQUAL "Debug" AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND
CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "13")
endif()
file(GLOB uthread_asm_src "uthread/internal/${CMAKE_SYSTEM_NAME}/${CMAKE_SYSTEM_PROCESSOR}/*.S")
if(MSVC)
file(GLOB uthread_asm_src "uthread/internal/${CMAKE_SYSTEM_NAME}/${CMAKE_SYSTEM_PROCESSOR}/*.asm")
else()
file(GLOB uthread_asm_src "uthread/internal/${CMAKE_SYSTEM_NAME}/${CMAKE_SYSTEM_PROCESSOR}/*.S")
endif()
endif()

file(GLOB headers "*.h")
Expand Down
201 changes: 201 additions & 0 deletions async_simple/uthread/internal/Windows/AMD64/jump_x86_64_ms_pe_masm.asm
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Original file line number Diff line number Diff line change
@@ -0,0 +1,201 @@

; Copyright Oliver Kowalke 2009.
; Distributed under the Boost Software License, Version 1.0.
; (See accompanying file LICENSE_1_0.txt or copy at
; http://www.boost.org/LICENSE_1_0.txt)

; ----------------------------------------------------------------------------------
; | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
; ----------------------------------------------------------------------------------
; | 0x0 | 0x4 | 0x8 | 0xc | 0x10 | 0x14 | 0x18 | 0x1c |
; ----------------------------------------------------------------------------------
; | SEE registers (XMM6-XMM15) |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
; ----------------------------------------------------------------------------------
; | 0x20 | 0x24 | 0x28 | 0x2c | 0x30 | 0x34 | 0x38 | 0x3c |
; ----------------------------------------------------------------------------------
; | SEE registers (XMM6-XMM15) |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
; ----------------------------------------------------------------------------------
; | 0xe40 | 0x44 | 0x48 | 0x4c | 0x50 | 0x54 | 0x58 | 0x5c |
; ----------------------------------------------------------------------------------
; | SEE registers (XMM6-XMM15) |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
; ----------------------------------------------------------------------------------
; | 0x60 | 0x64 | 0x68 | 0x6c | 0x70 | 0x74 | 0x78 | 0x7c |
; ----------------------------------------------------------------------------------
; | SEE registers (XMM6-XMM15) |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 32 | 32 | 33 | 34 | 35 | 36 | 37 | 38 |
; ----------------------------------------------------------------------------------
; | 0x80 | 0x84 | 0x88 | 0x8c | 0x90 | 0x94 | 0x98 | 0x9c |
; ----------------------------------------------------------------------------------
; | SEE registers (XMM6-XMM15) |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 |
; ----------------------------------------------------------------------------------
; | 0xa0 | 0xa4 | 0xa8 | 0xac | 0xb0 | 0xb4 | 0xb8 | 0xbc |
; ----------------------------------------------------------------------------------
; | fc_mxcsr|fc_x87_cw| <alignment> | fbr_strg | fc_dealloc |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 |
; ----------------------------------------------------------------------------------
; | 0xc0 | 0xc4 | 0xc8 | 0xcc | 0xd0 | 0xd4 | 0xd8 | 0xdc |
; ----------------------------------------------------------------------------------
; | limit | base | R12 | R13 |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 |
; ----------------------------------------------------------------------------------
; | 0xe0 | 0xe4 | 0xe8 | 0xec | 0xf0 | 0xf4 | 0xf8 | 0xfc |
; ----------------------------------------------------------------------------------
; | R14 | R15 | RDI | RSI |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 |
; ----------------------------------------------------------------------------------
; | 0x100 | 0x104 | 0x108 | 0x10c | 0x110 | 0x114 | 0x118 | 0x11c |
; ----------------------------------------------------------------------------------
; | RBX | RBP | hidden | RIP |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 |
; ----------------------------------------------------------------------------------
; | 0x120 | 0x124 | 0x128 | 0x12c | 0x130 | 0x134 | 0x138 | 0x13c |
; ----------------------------------------------------------------------------------
; | parameter area |
; ----------------------------------------------------------------------------------
; ----------------------------------------------------------------------------------
; | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 |
; ----------------------------------------------------------------------------------
; | 0x140 | 0x144 | 0x148 | 0x14c | 0x150 | 0x154 | 0x158 | 0x15c |
; ----------------------------------------------------------------------------------
; | FCTX | DATA | |
; ----------------------------------------------------------------------------------

.code

_fl_jump_fcontext PROC EXPORT FRAME
.endprolog

; prepare stack
lea rsp, [rsp-0118h]

; save XMM storage
movaps [rsp], xmm6
movaps [rsp+010h], xmm7
movaps [rsp+020h], xmm8
movaps [rsp+030h], xmm9
movaps [rsp+040h], xmm10
movaps [rsp+050h], xmm11
movaps [rsp+060h], xmm12
movaps [rsp+070h], xmm13
movaps [rsp+080h], xmm14
movaps [rsp+090h], xmm15
; save MMX control- and status-word
stmxcsr [rsp+0a0h]
; save x87 control-word
fnstcw [rsp+0a4h]

; load NT_TIB
mov r10, gs:[030h]
; save fiber local storage
mov rax, [r10+020h]
mov [rsp+0b0h], rax
; save current deallocation stack
mov rax, [r10+01478h]
mov [rsp+0b8h], rax
; save current stack limit
mov rax, [r10+010h]
mov [rsp+0c0h], rax
; save current stack base
mov rax, [r10+08h]
mov [rsp+0c8h], rax

mov [rsp+0d0h], r12 ; save R12
mov [rsp+0d8h], r13 ; save R13
mov [rsp+0e0h], r14 ; save R14
mov [rsp+0e8h], r15 ; save R15
mov [rsp+0f0h], rdi ; save RDI
mov [rsp+0f8h], rsi ; save RSI
mov [rsp+0100h], rbx ; save RBX
mov [rsp+0108h], rbp ; save RBP

mov [rsp+0110h], rcx ; save hidden address of transport_t

; preserve RSP (pointing to context-data) in R9
mov r9, rsp

; restore RSP (pointing to context-data) from RDX
mov rsp, rdx

; restore XMM storage
movaps xmm6, [rsp]
movaps xmm7, [rsp+010h]
movaps xmm8, [rsp+020h]
movaps xmm9, [rsp+030h]
movaps xmm10, [rsp+040h]
movaps xmm11, [rsp+050h]
movaps xmm12, [rsp+060h]
movaps xmm13, [rsp+070h]
movaps xmm14, [rsp+080h]
movaps xmm15, [rsp+090h]
; restore MMX control- and status-word
ldmxcsr [rsp+0a0h]
; save x87 control-word
fldcw [rsp+0a4h]

; load NT_TIB
mov r10, gs:[030h]
; restore fiber local storage
mov rax, [rsp+0b0h]
mov [r10+020h], rax
; restore current deallocation stack
mov rax, [rsp+0b8h]
mov [r10+01478h], rax
; restore current stack limit
mov rax, [rsp+0c0h]
mov [r10+010h], rax
; restore current stack base
mov rax, [rsp+0c8h]
mov [r10+08h], rax

mov r12, [rsp+0d0h] ; restore R12
mov r13, [rsp+0d8h] ; restore R13
mov r14, [rsp+0e0h] ; restore R14
mov r15, [rsp+0e8h] ; restore R15
mov rdi, [rsp+0f0h] ; restore RDI
mov rsi, [rsp+0f8h] ; restore RSI
mov rbx, [rsp+0100h] ; restore RBX
mov rbp, [rsp+0108h] ; restore RBP

mov rax, [rsp+0110h] ; restore hidden address of transport_t

; prepare stack
lea rsp, [rsp+0118h]

; load return-address
pop r10

; transport_t returned in RAX
; return parent fcontext_t
mov [rax], r9
; return data
mov [rax+08h], r8

; transport_t as 1.arg of context-function
mov rcx, rax

; indirect jump to context
jmp r10
_fl_jump_fcontext ENDP
END
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