72 lines
2.6 KiB
C
72 lines
2.6 KiB
C
/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "los_user_init.h"
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#include "los_syscall.h"
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#ifdef LOSCFG_KERNEL_SYSCALL
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#define SYS_CALL_VALUE 0x900001
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#ifdef LOSCFG_QUICK_START
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LITE_USER_SEC_RODATA STATIC CHAR *g_initPath = "/dev/shm/init";
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#else
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LITE_USER_SEC_RODATA STATIC CHAR *g_initPath = "/bin/init";
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#endif
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LITE_USER_SEC_TEXT STATIC UINT32 sys_call3(UINT32 nbr, UINT32 parm1, UINT32 parm2, UINT32 parm3)
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{
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register UINT32 reg7 __asm__("r7") = (UINT32)(nbr);
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register UINT32 reg2 __asm__("r2") = (UINT32)(parm3);
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register UINT32 reg1 __asm__("r1") = (UINT32)(parm2);
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register UINT32 reg0 __asm__("r0") = (UINT32)(parm1);
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__asm__ __volatile__
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(
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"svc %1"
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: "=r"(reg0)
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: "i"(SYS_CALL_VALUE), "r"(reg7), "r"(reg0), "r"(reg1), "r"(reg2)
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: "memory", "r14"
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);
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return reg0;
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}
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LITE_USER_SEC_ENTRY VOID OsUserInit(VOID *args)
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{
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#ifdef LOSCFG_KERNEL_DYNLOAD
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sys_call3(__NR_execve, (UINTPTR)g_initPath, 0, 0);
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#endif
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while (true) {
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}
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}
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#endif
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