/* vacall function for m68k CPU */
/*
* Copyright 1995-2006 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
#ifdef __NetBSD__
__asm__("a1");
#else
__asm__("a0");
#endif
#endif
register void* sret __asm__("a1");
register int iret __asm__("d0");
register int iret2 __asm__("d1");
register int pret __asm__("a0"); /* some compilers return pointers in a0 */
register float fret __asm__("d0"); /* d0 */
register double dret __asm__("d0"); /* d0,d1 */
register float fp_fret __asm__("fp0");
register double fp_dret __asm__("fp0");
void /* the return type is variable, not void! */
__vacall (__vaword firstword)
{
__va_alist list;
/* Prepare the va_alist. */
list.flags = 0;
list.aptr = (long)&firstword;
list.raddr = (void*)0;
list.rtype = __VAvoid;
list.structraddr = sret;
/* 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) {
if (list.flags & __VA_FREG_FLOAT_RETURN) {
fp_fret = list.tmp._float;
} else {
if (list.flags & __VA_SUNCC_FLOAT_RETURN) {
dret = (double)list.tmp._float;
} else {
fret = list.tmp._float;
}
}
} else
if (list.rtype == __VAdouble) {
if (list.flags & __VA_FREG_FLOAT_RETURN) {
fp_dret = list.tmp._double;
} else {
dret = list.tmp._double;
}
} else
if (list.rtype == __VAvoidp) {
pret = iret = (long)list.tmp._ptr;
} else
if (list.rtype == __VAstruct) {
/* NB: On m68k, all structure sizes are divisible by 2. */
if (list.flags & __VA_REGISTER_STRUCT_RETURN) {
if (list.rsize == sizeof(char)) { /* can't occur */
iret = *(unsigned char *) list.raddr;
goto done;
} else
if (list.rsize == sizeof(short)) {
iret = *(unsigned short *) list.raddr;
goto done;
} else
if (list.rsize == sizeof(int)) {
iret = *(unsigned int *) list.raddr;
goto done;
} else
if (list.rsize == 2*sizeof(__vaword)) {
iret = ((__vaword *) list.raddr)[0];
iret2 = ((__vaword *) list.raddr)[1];
goto done;
}
}
if (list.flags & __VA_PCC_STRUCT_RETURN) {
/* pcc struct return convention */
pret = iret = (long) list.raddr;
} else {
/* normal struct return convention */
}
done: ;
}
}