func softfloat(ctxt *liblink.Link, cursym *liblink.LSym) {
var p *liblink.Prog
var next *liblink.Prog
var symsfloat *liblink.LSym
var wasfloat int
if ctxt.Goarm > 5 {
return
}
symsfloat = liblink.Linklookup(ctxt, "_sfloat", 0)
wasfloat = 0
for p = cursym.Text; p != nil; p = p.Link {
if p.Pcond != nil {
p.Pcond.Mark |= LABEL
}
}
for p = cursym.Text; p != nil; p = p.Link {
switch p.As {
case AMOVW:
if p.To.Typ == D_FREG || p.From.Typ == D_FREG {
goto soft
}
goto notsoft
case AMOVWD,
AMOVWF,
AMOVDW,
AMOVFW,
AMOVFD,
AMOVDF,
AMOVF,
AMOVD,
ACMPF,
ACMPD,
AADDF,
AADDD,
ASUBF,
ASUBD,
AMULF,
AMULD,
ADIVF,
ADIVD,
ASQRTF,
ASQRTD,
AABSF,
AABSD:
goto soft
default:
goto notsoft
}
soft:
if wasfloat == 0 || (p.Mark&LABEL != 0) {
next = ctxt.Prg()
*next = *p
// BL _sfloat(SB)
*p = zprg_obj5
p.Ctxt = ctxt
p.Link = next
p.As = ABL
p.To.Typ = D_BRANCH
p.To.Sym = symsfloat
p.Lineno = next.Lineno
p = next
wasfloat = 1
}
continue
notsoft:
wasfloat = 0
}
}
