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/****************************************************************
* *
* Copyright (c) 2009-2015 Fidelity National Information *
* Services, Inc. and/or its subsidiaries. All rights reserved. *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include <stdarg.h>
#include "lv_val.h" /* needed for "callg.h" */
#include "callg.h"
#define VAR_ARGS4(ar) ar[0], ar[1], ar[2], ar[3]
#define VAR_ARGS8(ar) VAR_ARGS4(ar), ar[4], ar[5], ar[6], ar[7]
#define VAR_ARGS12(ar) VAR_ARGS8(ar), ar[8], ar[9], ar[10], ar[11]
#define VAR_ARGS16(ar) VAR_ARGS12(ar), ar[12], ar[13], ar[14], ar[15]
#define VAR_ARGS20(ar) VAR_ARGS16(ar), ar[16], ar[17], ar[18], ar[19]
#define VAR_ARGS24(ar) VAR_ARGS20(ar), ar[20], ar[21], ar[22], ar[23]
#define VAR_ARGS28(ar) VAR_ARGS24(ar), ar[24], ar[25], ar[26], ar[27]
#define VAR_ARGS32(ar) VAR_ARGS28(ar), ar[28], ar[29], ar[30], ar[31]
#define VAR_ARGS36(ar) VAR_ARGS32(ar), ar[32], ar[33], ar[34], ar[35]
/* Note selection of doing 4 parms per case block is based on the fact that Itanium can do at most 4 parm loads
at one time due to instruction bundle restrictions and the fact that most calls made are 4 or fewer parms.
NOTE: Although this module can be used on other platforms it is efficient **ONLY** on Itanium in its present
form and is not suggested for use on other platforms.
*/
INTPTR_T callg(callgfnptr fnptr, gparam_list *paramlist)
{
assert(36 == (SIZEOF(paramlist->arg) / SIZEOF(void *)));
switch(paramlist->n)
{
case 0:
return (fnptr)(0);
case 1:
case 2:
case 3:
case 4:
return (fnptr)(paramlist->n, VAR_ARGS4(paramlist->arg));
case 5:
case 6:
case 7:
case 8:
return (fnptr)(paramlist->n, VAR_ARGS8(paramlist->arg));
case 9:
case 10:
case 11:
case 12:
return (fnptr)(paramlist->n, VAR_ARGS12(paramlist->arg));
case 13:
case 14:
case 15:
case 16:
return (fnptr)(paramlist->n, VAR_ARGS16(paramlist->arg));
case 17:
case 18:
case 19:
case 20:
return (fnptr)(paramlist->n, VAR_ARGS20(paramlist->arg));
case 21:
case 22:
case 23:
case 24:
return (fnptr)(paramlist->n, VAR_ARGS24(paramlist->arg));
case 25:
case 26:
case 27:
case 28:
return (fnptr)(paramlist->n, VAR_ARGS28(paramlist->arg));
case 29:
case 30:
case 31:
case 32:
return (fnptr)(paramlist->n, VAR_ARGS32(paramlist->arg));
case 33:
case 34:
case 35:
case 36:
assert(fnptr == (callgfnptr)push_parm); /* Only push_parm is aware of this extra space */
return (fnptr)(paramlist->n, VAR_ARGS36(paramlist->arg));
default:
assertpro(paramlist->n <= 36);
}
return 0;
}
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