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/* vacall function for sparc CPU */
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* Copyright 1995-2005 Bruno Haible, <bruno@clisp.org>
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* This is free software distributed under the GNU General Public Licence
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* described in the file COPYING. Contact the author if you don't have this
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* or can't live with it. There is ABSOLUTELY NO WARRANTY, explicit or implied,
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#include "vacall.h.in"
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#include "vacall_r.h.in"
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#define __vacall __vacall_r
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register struct { void (*vacall_function) (void*,va_alist); void* arg; }
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register __vaword* fp __asm__("%fp"); /* our %fp, caller's %sp */
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register __vaword* ret __asm__("%i7"); /* %i7+8 = return address */
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register int iret __asm__("%i0");
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register int iret2 __asm__("%i1");
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register float fret __asm__("%f0"); /* %f0 */
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register double dret __asm__("%f0"); /* %f0,%f1 */
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void /* the return type is variable, not void! */
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__vacall (__vaword word1, __vaword word2, __vaword word3, __vaword word4,
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__vaword word5, __vaword word6,
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/* gcc-2.6.3 source says: When a parameter is passed in a register,
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* stack space is still allocated for it.
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/* Move the arguments passed in registers to their stack locations. */
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(&firstword)[-6] = word1;
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(&firstword)[-5] = word2;
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(&firstword)[-4] = word3;
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(&firstword)[-3] = word4;
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(&firstword)[-2] = word5;
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(&firstword)[-1] = word6;
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/* Prepare the va_alist. */
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list.aptr = (long)(&firstword - 6);
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list.raddr = (void*)0;
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list.rtype = __VAvoid;
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list.structraddr = (void*)((&firstword)[-7]); /* = (void*) fp[16] */
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/* Call vacall_function. The macros do all the rest. */
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(*vacall_function) (&list);
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(*env->vacall_function) (env->arg,&list);
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/* Put return value into proper register. */
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if (list.rtype == __VAvoid) {
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if (list.rtype == __VAchar) {
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iret = list.tmp._char;
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if (list.rtype == __VAschar) {
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iret = list.tmp._schar;
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if (list.rtype == __VAuchar) {
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iret = list.tmp._uchar;
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if (list.rtype == __VAshort) {
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iret = list.tmp._short;
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if (list.rtype == __VAushort) {
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iret = list.tmp._ushort;
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if (list.rtype == __VAint) {
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if (list.rtype == __VAuint) {
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iret = list.tmp._uint;
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if (list.rtype == __VAlong) {
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iret = list.tmp._long;
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if (list.rtype == __VAulong) {
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iret = list.tmp._ulong;
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if (list.rtype == __VAlonglong || list.rtype == __VAulonglong) {
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iret = ((__vaword *) &list.tmp._longlong)[0];
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iret2 = ((__vaword *) &list.tmp._longlong)[1];
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if (list.rtype == __VAfloat) {
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if (list.flags & __VA_SUNCC_FLOAT_RETURN) {
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dret = (double)list.tmp._float;
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fret = list.tmp._float;
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if (list.rtype == __VAdouble) {
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dret = list.tmp._double;
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if (list.rtype == __VAvoidp) {
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iret = (long)list.tmp._ptr;
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if (list.rtype == __VAstruct) {
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if (list.flags & __VA_SUNPROCC_STRUCT_RETURN) {
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/* Sun cc struct return convention. */
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/* The desired struct return address was passed in fp[16], later on
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* list.raddr = list.structraddr = fp[16]. Now the result has
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* already been copied there. No need to copy the result once more.
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* The caller expects to receive the struct return address in %o0.
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iret = (long) list.raddr;
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if ((list.rsize & 0xfff) == ret[2])
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ret++; /* skip the "unimp n" instruction at the return address */
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/* else the "unimp n" instruction will cause a core dump */
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if (list.flags & __VA_PCC_STRUCT_RETURN) {
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/* pcc struct return convention */
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iret = (long) list.raddr;
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/* normal struct return convention */
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if (list.flags & __VA_SMALL_STRUCT_RETURN) {
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if (list.rsize == sizeof(char)) {
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iret = *(unsigned char *) list.raddr;
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if (list.rsize == sizeof(short)) {
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iret = *(unsigned short *) list.raddr;
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if (list.rsize == sizeof(int)) {
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iret = *(unsigned int *) list.raddr;
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ret++; /* skip the "unimp n" instruction at the return address */
added
removed
ffcall/vacall/vacall-sparc.c
