/* vacall function for alpha CPU */
/*
* Copyright 1995-2004 Bruno Haible, <bruno@clisp.org>
*
* This is free software distributed under the GNU General Public Licence
* described in the file COPYING. Contact the author if you don't have this
* or can't live with it. There is ABSOLUTELY NO WARRANTY, explicit or implied,
* on this software.
*/
#ifndef REENTRANT
#include "vacall.h.in"
#else /* REENTRANT */
#include "vacall_r.h.in"
#endif
#ifdef REENTRANT
#define __vacall __vacall_r
register struct { void (*vacall_function) (void*,va_alist); void* arg; }
* env __asm__("$1");
#endif
register long arg1 __asm__("$16");
register long arg2 __asm__("$17");
register long arg3 __asm__("$18");
register long arg4 __asm__("$19");
register long arg5 __asm__("$20");
register long arg6 __asm__("$21");
register double farg1 __asm__("$f16");
register double farg2 __asm__("$f17");
register double farg3 __asm__("$f18");
register double farg4 __asm__("$f19");
register double farg5 __asm__("$f20");
register double farg6 __asm__("$f21");
register __vaword iret __asm__("$0");
register __vaword iret2 __asm__("$1");
register float fret __asm__("$f0");
register double dret __asm__("$f0");
void /* the return type is variable, not void! */
__vacall (__vaword word1, __vaword word2, __vaword word3, __vaword word4,
__vaword word5, __vaword word6,
__vaword firstword)
{
__va_alist list;
struct { double farg1, farg2, farg3, farg4, farg5, farg6;
long arg1, arg2, arg3, arg4, arg5, arg6;
}
args;
/* MAGIC ALERT! This is the last struct on the stack, so that
* &args + 1 == &firstword. Look at the assembly code to convince yourself.
*/
/* Move the arguments passed in registers to their stack locations. */
/* args.arg1 = */ (&firstword)[-6] = word1;
/* args.arg2 = */ (&firstword)[-5] = word2;
/* args.arg3 = */ (&firstword)[-4] = word3;
/* args.arg4 = */ (&firstword)[-3] = word4;
/* args.arg5 = */ (&firstword)[-2] = word5;
/* args.arg6 = */ (&firstword)[-1] = word6;
args.farg1 = farg1;
args.farg2 = farg2;
args.farg3 = farg3;
args.farg4 = farg4;
args.farg5 = farg5;
args.farg6 = farg6;
/* Prepare the va_alist. */
list.flags = 0;
list.aptr = (long)(&firstword - 6);
list.raddr = (void*)0;
list.rtype = __VAvoid;
list.memargptr = (long)&firstword;
/* Call vacall_function. The macros do all the rest. */
#ifndef REENTRANT
(*vacall_function) (&list);
#else /* REENTRANT */
(*env->vacall_function) (env->arg,&list);
#endif
/* Put return value into proper register. */
if (list.rtype == __VAvoid) {
} else
if (list.rtype == __VAchar) {
iret = list.tmp._char;
} else
if (list.rtype == __VAschar) {
iret = list.tmp._schar;
} else
if (list.rtype == __VAuchar) {
iret = list.tmp._uchar;
} else
if (list.rtype == __VAshort) {
iret = list.tmp._short;
} else
if (list.rtype == __VAushort) {
iret = list.tmp._ushort;
} else
if (list.rtype == __VAint) {
iret = list.tmp._int;
} else
if (list.rtype == __VAuint) {
iret = list.tmp._uint;
} else
if (list.rtype == __VAlong) {
iret = list.tmp._long;
} else
if (list.rtype == __VAulong) {
iret = list.tmp._ulong;
} else
if (list.rtype == __VAlonglong) {
iret = list.tmp._long;
} else
if (list.rtype == __VAulonglong) {
iret = list.tmp._ulong;
} else
if (list.rtype == __VAfloat) {
fret = list.tmp._float;
} else
if (list.rtype == __VAdouble) {
dret = list.tmp._double;
} else
if (list.rtype == __VAvoidp) {
iret = (long)list.tmp._ptr;
} else
if (list.rtype == __VAstruct) {
if (list.flags & __VA_PCC_STRUCT_RETURN) {
/* pcc struct return convention */
iret = (long) list.raddr;
} else {
/* normal struct return convention */
if (list.flags & __VA_REGISTER_STRUCT_RETURN) {
if (list.rsize == sizeof(char)) {
iret = *(unsigned char *) list.raddr;
} else
if (list.rsize == sizeof(short)) {
iret = *(unsigned short *) list.raddr;
} else
if (list.rsize == sizeof(int)) {
iret = *(unsigned int *) list.raddr;
} else
if (list.rsize == sizeof(long)) {
iret = *(unsigned long *) list.raddr;
} else
if (list.rsize == 2*sizeof(__vaword)) {
iret = ((__vaword *) list.raddr)[0];
iret2 = ((__vaword *) list.raddr)[1];
}
}
}
}
}