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/*
* Convert SysV calling convention to EFI x86_64 calling convention
*
* Copyright (C) 2007-2010 Intel Corp
* Bibo Mao <bibo.mao@intel.com>
* Chandramouli Narayanan<mouli@linux.intel.com>
* Huang Ying <ying.huang@intel.com>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
* - Neither the name of Hewlett-Packard Co. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANYDIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "efi.h"
#include "efistdarg.h"
#if !defined(HAVE_USE_MS_ABI)
UINT64 efi_call0(void *func);
UINT64 efi_call1(void *func, UINT64 arg1);
UINT64 efi_call2(void *func, UINT64 arg1, UINT64 arg2);
UINT64 efi_call3(void *func, UINT64 arg1, UINT64 arg2, UINT64 arg3);
UINT64 efi_call4(void *func, UINT64 arg1, UINT64 arg2, UINT64 arg3,
UINT64 arg4);
UINT64 efi_call5(void *func, UINT64 arg1, UINT64 arg2, UINT64 arg3,
UINT64 arg4, UINT64 arg5);
UINT64 efi_call6(void *func, UINT64 arg1, UINT64 arg2, UINT64 arg3,
UINT64 arg4, UINT64 arg5, UINT64 arg6);
UINT64 efi_call7(void *func, UINT64 arg1, UINT64 arg2, UINT64 arg3,
UINT64 arg4, UINT64 arg5, UINT64 arg6, UINT64 arg7);
UINT64 efi_call8(void *func, UINT64 arg1, UINT64 arg2, UINT64 arg3,
UINT64 arg4, UINT64 arg5, UINT64 arg6, UINT64 arg7,
UINT64 arg8);
UINT64 efi_call9(void *func, UINT64 arg1, UINT64 arg2, UINT64 arg3,
UINT64 arg4, UINT64 arg5, UINT64 arg6, UINT64 arg7,
UINT64 arg8, UINT64 arg9);
UINT64 efi_call10(void *func, UINT64 arg1, UINT64 arg2, UINT64 arg3,
UINT64 arg4, UINT64 arg5, UINT64 arg6, UINT64 arg7,
UINT64 arg8, UINT64 arg9, UINT64 arg10);
#define EFI_ARG_NUM_MAX 10
EFI_STATUS uefi_call_wrapper(void *fp, unsigned long va_num, ...)
{
va_list ap;
int i;
unsigned long args[EFI_ARG_NUM_MAX];
if (va_num > EFI_ARG_NUM_MAX || va_num < 0) {
return EFI_LOAD_ERROR;
}
va_start(ap, va_num);
for (i = 0; i < va_num; i++) {
args[i] = va_arg(ap, UINT64);
}
va_end(ap);
/* As the number of args grows extend it appropriately */
switch (va_num) {
case 0:
return efi_call0(fp);
case 1:
return efi_call1(fp, args[0]);
case 2:
return efi_call2(fp,
args[0], args[1]);
case 3:
return efi_call3(fp,
args[0], args[1], args[2]);
case 4:
return efi_call4(fp,
args[0], args[1], args[2], args[3]);
case 5:
return efi_call5(fp,
args[0], args[1], args[2], args[3],
args[4]);
case 6:
return efi_call6(fp,
args[0], args[1], args[2], args[3],
args[4], args[5]);
case 7:
return efi_call7(fp,
args[0], args[1], args[2], args[3],
args[4], args[5], args[6]);
case 8:
return efi_call8(fp,
args[0], args[1], args[2], args[3],
args[4], args[5], args[6], args[7]);
case 9:
return efi_call9(fp,
args[0], args[1], args[2], args[3],
args[4], args[5], args[6], args[7],
args[8]);
case 10:
return efi_call10(fp,
args[0], args[1], args[2], args[3],
args[4], args[5], args[6], args[7],
args[8], args[9]);
default:
return EFI_LOAD_ERROR;
}
}
#endif
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