/*
 * PROJECT:     ReactOS API tests
 * LICENSE:     MIT (https://spdx.org/licenses/MIT)
 * PURPOSE:     Helper functions for NtCreateThread test
 * COPYRIGHT:   Copyright 2026 Timo Kreuzer <timo.kreuzer@reactos.org>
 */

#include <asm.inc>
#include <ksamd64.inc>

.code64

EXTERN RtlCaptureContext:PROC
EXTERN TestThreadProcPtr:QWORD
EXTERN TestThreadStartupContext:QWORD

PUBLIC ThreadStartupThunk
.PROC ThreadStartupThunk

    pushfq
    push rcx
    sub rsp, 5 * 8
    .ENDPROLOG

    lea rcx, TestThreadStartupContext[rip]
    call RtlCaptureContext

    /* Save original rcx */
    mov rcx, [rsp + 5 * 8]
    mov TestThreadStartupContext[rip + CxRcx], rcx

    /* Save original eflags */
    mov rcx, [rsp + 6 * 8]
    mov TestThreadStartupContext[rip + CxEFlags], rcx

    /* Fix Rsp */
    lea rcx, [rsp + 7 * 8]
    mov qword ptr TestThreadStartupContext[rip + CxRsp], rcx

    add rsp, 7 * 8
    jmp qword ptr TestThreadProcPtr[rip]

.ENDP

END