/* vacall function for S/390 CPU */
/*
* Copyright 1995-2004 Bruno Haible, <bruno@clisp.org>
* Copyright 2000 Adam Fedor, <fedor@gnu.org>
* Copyright 2001 Gerhard Tonn, <gt@debian.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"
#endif
#ifdef REENTRANT
#define __vacall __vacall_r
register struct { void (*vacall_function) (void*,va_alist); void* arg; }
* env __asm__("r0");
#endif
register float farg1 __asm__("f0");
register float farg2 __asm__("f2");
register double darg1 __asm__("f0");
register double darg2 __asm__("f2");
register __vaword iret __asm__("%r2");
register __vaword iret2 __asm__("%r3");
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 firstword)
{
__va_alist list;
/* Move the arguments passed in registers to temp storage, since
moving them to the stack would mess up the stack */
list.regarg[0] = word1;
list.regarg[1] = word2;
list.regarg[2] = word3;
list.regarg[3] = word4;
list.regarg[4] = word5;
list.darg[1] = darg2;
list.darg[0] = darg1;
list.farg[1] = farg2;
list.farg[0] = farg1;
/* Prepare the va_alist. */
list.flags = 0;
list.aptr = (long)(&list.regarg[0]);
list.saptr = (long)(&firstword);
list.onstack = 0;
list.raddr = (void*)0;
list.rtype = __VAvoid;
list.memfargptr = &list.farg[0];
list.memdargptr = &list.darg[0];
/* 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 || list.rtype == __VAulonglong) {
iret = ((__vaword *) &list.tmp._longlong)[0];
iret2 = ((__vaword *) &list.tmp._longlong)[1];
} 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 == 2*sizeof(__vaword)) {
iret = ((__vaword *) list.raddr)[0];
iret2 = ((__vaword *) list.raddr)[1];
}
}
}
}
}