stk/Stack/libstack-HP.c

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1998-04-10 06:59:06 -04:00
/******************************************************************************
*
* l i b s t a c k - H P . c
*
* Copyright <EFBFBD> 1997 Erick Gallesio - I3S-CNRS/ESSI <eg@unice.fr>
*
*
* Permission to use, copy, and/or distribute this software and its
* documentation for any purpose and without fee is hereby granted, provided
* that both the above copyright notice and this permission notice appear in
* all copies and derived works. Fees for distribution or use of this
* software or derived works may only be charged with express written
* permission of the copyright holder.
* This software is provided ``as is'' without express or implied warranty.
*
* This software is a derivative work of other copyrighted softwares; the
* copyright notices of these softwares are placed in the file COPYRIGHTS
*
*
* Author: Erick Gallesio [eg@unice.fr]
* Creation date: 29-Sep-1997 12:18
* Last file update: 29-Sep-1997 14:36
*
******************************************************************************/
#include "libstack.h"
/*
All arguments, except the first 4 words, are passed on the stack
with word alignment. Doubles take two words and force double
alignment.
The first 2 words are passed like this:
%r26 = first integer arg, %r25 = second integer arg, or
%r26 = high word of double arg, %r25 = low word of double arg.
Similarly for the next 2 words, passed in %r24 and %r23.
*/
fake_type stk_argv[MAX_EXTERNAL_PARAM];
int stk_argc = 0;
int stk_push_double(double d)
{
if (stk_argc & 1) /* align */ stk_argc++;
if ((stk_argc < MAX_EXTERNAL_PARAM-1)) {
stk_argv[stk_argc+1].d = d;
stk_argv[stk_argc].i[1]= stk_argv[stk_argc].i[0];
stk_argc +=2;
return 0;
}
return -1;
}
long stk_call_long(void *func)
{
long (*f)() = func;
big_switch;
}
double stk_call_double(void *func)
{
double (*f)() = func;
big_switch;
}
float stk_call_float(void *func)
{
float (*f)() = func;
big_switch;
}