powerpc/fpu/fpu_emu.c

189 	struct fpemu fe;
194 	fe.fe_fpstate = fpf;
195 	fe.fe_cx = 0;
218 	switch (fpu_execute(frame, &fe, &insn)) {
263  * FBfcc or STF, for instance).  On return, fe->fe_fs->fs_fsr will be
270 fpu_execute(struct trapframe *tf, struct fpemu *fe, union instr *insn)
282 	fs = fe->fe_fpstate;
283 	fe->fe_fpscr = ((int *)&fs->fpscr)[1];
397 				fpu_explode(fe, fp = &fe->fe_f1, FTYPE_DBL, rt);
398 				fpu_implode(fe, fp, type, (void *)&buf);
418 				fpu_explode(fe, fp = &fe->fe_f1, type, rt);
419 				fpu_implode(fe, fp, FTYPE_DBL,
450 				fpu_explode(fe, &fe->fe_f1, type, ra);
451 				fpu_explode(fe, &fe->fe_f2, type, rb);
452 				fpu_compare(fe, 0);
471 				fpu_explode(fe, fp = &fe->fe_f1, FTYPE_DBL, rb);
472 				fpu_implode(fe, fp, FTYPE_SNG,
474 				fpu_explode(fe, fp = &fe->fe_f1, FTYPE_SNG, rt);
481 				fpu_explode(fe, fp = &fe->fe_f1, type, rb);
488 				fpu_explode(fe, &fe->fe_f1, type, ra);
489 				fpu_explode(fe, &fe->fe_f2, type, rb);
490 				fpu_compare(fe, 1);
500 				fe->fe_fpscr |=
518 				mask = (fe->fe_fpscr >> (28 - ra)) & 0xf;
520 				fe->fe_cx =
522 				fe->fe_fpscr &= fe->fe_cx;
530 				fe->fe_fpscr &=
544 				fe->fe_cx = rb << (28 - rt);
546 				fe->fe_fpscr = (fe->fe_fpscr & ~mask) |
547 					fe->fe_cx;
585 				fe->fe_cx = mask & a[1];
586 				fe->fe_fpscr = (fe->fe_fpscr&~mask) |
587 					(fe->fe_cx);
594 				fpu_explode(fe, fp = &fe->fe_f1, type, rb);
601 				fpu_explode(fe, fp = &fe->fe_f1, type, rb);
624 				fpu_explode(fe, &fe->fe_f1, type, ra);
625 				fpu_explode(fe, &fe->fe_f2, type, rb);
626 				fp = fpu_div(fe);
631 				fpu_explode(fe, &fe->fe_f1, type, ra);
632 				fpu_explode(fe, &fe->fe_f2, type, rb);
633 				fp = fpu_sub(fe);
638 				fpu_explode(fe, &fe->fe_f1, type, ra);
639 				fpu_explode(fe, &fe->fe_f2, type, rb);
640 				fp = fpu_add(fe);
645 				fpu_explode(fe, &fe->fe_f1, type, rb);
646 				fp = fpu_sqrt(fe);
651 				a = (int *)&fe->fe_fpstate->fpr[ra].fpr;
662 				fpu_explode(fe, &fe->fe_f1, type, rb);
663 				fp = fpu_sqrt(fe);
665 				*((int *)&fe->fe_fpstate->fpr[rt].fpr) = 1;
666 				fpu_explode(fe, &fe->fe_f1, FTYPE_INT, rt);
667 				fpu_div(fe);
672 				fpu_explode(fe, &fe->fe_f1, type, ra);
673 				fpu_explode(fe, &fe->fe_f2, type, rc);
674 				fp = fpu_mul(fe);
680 				fpu_explode(fe, &fe->fe_f1, type, rb);
681 				fp = fpu_sqrt(fe);
682 				fe->fe_f2 = *fp;
684 				*((int *)&fe->fe_fpstate->fpr[rt].fpr) = 1;
685 				fpu_explode(fe, &fe->fe_f1, FTYPE_INT, rt);
686 				fpu_div(fe);
691 				fpu_explode(fe, &fe->fe_f1, type, ra);
692 				fpu_explode(fe, &fe->fe_f2, type, rc);
693 				fp = fpu_mul(fe);
694 				fe->fe_f1 = *fp;
695 				fpu_explode(fe, &fe->fe_f2, type, rb);
696 				fp = fpu_sub(fe);
701 				fpu_explode(fe, &fe->fe_f1, type, ra);
702 				fpu_explode(fe, &fe->fe_f2, type, rc);
703 				fp = fpu_mul(fe);
704 				fe->fe_f1 = *fp;
705 				fpu_explode(fe, &fe->fe_f2, type, rb);
706 				fp = fpu_add(fe);
711 				fpu_explode(fe, &fe->fe_f1, type, ra);
712 				fpu_explode(fe, &fe->fe_f2, type, rc);
713 				fp = fpu_mul(fe);
714 				fe->fe_f1 = *fp;
715 				fpu_explode(fe, &fe->fe_f2, type, rb);
716 				fp = fpu_sub(fe);
723 				fpu_explode(fe, &fe->fe_f1, type, ra);
724 				fpu_explode(fe, &fe->fe_f2, type, rc);
725 				fp = fpu_mul(fe);
726 				fe->fe_f1 = *fp;
727 				fpu_explode(fe, &fe->fe_f2, type, rb);
728 				fp = fpu_add(fe);
739 				fpu_implode(fe, fp, FTYPE_SNG,
741 				fpu_explode(fe, fp = &fe->fe_f1, FTYPE_SNG, rt);
755 		fpu_implode(fe, fp, type, (u_int *)&fs->fpr[rt].fpr);
756 	cx = fe->fe_cx;
757 	fsr = fe->fe_fpscr;