diff options
Diffstat (limited to 'src/cmd/compile/internal/x86/ggen.go')
| -rw-r--r-- | src/cmd/compile/internal/x86/ggen.go | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/x86/ggen.go b/src/cmd/compile/internal/x86/ggen.go index 25769b4de0..33ffc5f534 100644 --- a/src/cmd/compile/internal/x86/ggen.go +++ b/src/cmd/compile/internal/x86/ggen.go @@ -84,6 +84,23 @@ func zerorange(p *obj.Prog, frame int64, lo int64, hi int64, ax *uint32) *obj.Pr return p } +func zeroAuto(n *gc.Node, pp *obj.Prog) { + // Note: this code must not clobber any registers. + sym := gc.Linksym(n.Sym) + size := n.Type.Size() + for i := int64(0); i < size; i += 4 { + p := gc.AddAsmAfter(x86.AMOVL, pp) + pp = p + p.From.Type = obj.TYPE_CONST + p.From.Offset = 0 + p.To.Type = obj.TYPE_MEM + p.To.Name = obj.NAME_AUTO + p.To.Reg = x86.REG_SP + p.To.Offset = n.Xoffset + i + p.To.Sym = sym + } +} + func ginsnop() { p := gc.Prog(x86.AXCHGL) p.From.Type = obj.TYPE_REG |