oldval = 0
	}
	if phase == 0 {
		return oldval
	}
	if oldval+p.Spadj < -10000 || oldval+p.Spadj > 1100000000 {
		ctxt.Diag("overflow in spadj: %d + %d = %d", oldval, p.Spadj, oldval+p.Spadj)
		ctxt.DiagFlush()
		log.Fatalf("bad code")
	}

	return oldval + p.Spadj
}

// pctopcdata computes the pcdata value in effect at p.
// A PCDATA instruction sets the value in effect at future

	ssagen.Arch.REGSP = x86.REGSP
	ssagen.Arch.MAXWIDTH = 1 << 50
	types.MaxWidth = ssagen.Arch.MAXWIDTH
	base.Ctxt = obj.Linknew(ssagen.Arch.LinkArch)
	base.Ctxt.DiagFunc = base.Errorf
	base.Ctxt.DiagFlush = base.FlushErrors
	base.Ctxt.Bso = bufio.NewWriter(os.Stdout)
	types.LocalPkg = types.NewPkg("p", "local")
	types.LocalPkg.Prefix = "p"
	types.PtrSize = ssagen.Arch.LinkArch.PtrSize

				if ctxt.Debugvlog || !ctxt.IsAsm {
					ctxt.Logf("auto-SPWRITE: %s %v\n", c.cursym.Name, p)
					if !ctxt.IsAsm {
						ctxt.Diag("invalid auto-SPWRITE in non-assembly")
						ctxt.DiagFlush()
						log.Fatalf("bad SPWRITE")
					}
				}
			}
		}
	}
}

func (c *ctxt5) stacksplit(p *obj.Prog, framesize int32) *obj.Prog {
	if c.ctxt.Flag_maymorestack != "" {

				if ctxt.Debugvlog || !ctxt.IsAsm {
					ctxt.Logf("auto-SPWRITE: %s %v\n", c.cursym.Name, p)
					if !ctxt.IsAsm {
						ctxt.Diag("invalid auto-SPWRITE in non-assembly")
						ctxt.DiagFlush()
						log.Fatalf("bad SPWRITE")
					}
				}
			}
		}
	}
}

func (c *ctxt0) stacksplit(p *obj.Prog, framesize int32) *obj.Prog {
	var mov, add obj.As

	add = AADDV
	mov = AMOVV

				if ctxt.Debugvlog || !ctxt.IsAsm {
					ctxt.Logf("auto-SPWRITE: %s\n", c.cursym.Name)
					if !ctxt.IsAsm {
						ctxt.Diag("invalid auto-SPWRITE in non-assembly")
						ctxt.DiagFlush()
						log.Fatalf("bad SPWRITE")
					}
				}
			}
		}
	}
	if wasSplit {
		c.stacksplitPost(pLast, pPre, pPreempt, pCheck, autosize) // emit post part of split check
	}
}

	InlTree            InlTree // global inlining tree used by gc/inl.go
	DwFixups           *DwarfFixupTable
	Imports            []goobj.ImportedPkg
	DiagFunc           func(string, ...interface{})
	DiagFlush          func()
	DebugInfo          func(fn *LSym, info *LSym, curfn Func) ([]dwarf.Scope, dwarf.InlCalls)
	GenAbstractFunc    func(fn *LSym)
	Errors             int

				if ctxt.Debugvlog || !ctxt.IsAsm {
					ctxt.Logf("auto-SPWRITE: %s %v\n", c.cursym.Name, p)
					if !ctxt.IsAsm {
						ctxt.Diag("invalid auto-SPWRITE in non-assembly")
						ctxt.DiagFlush()
						log.Fatalf("bad SPWRITE")
					}
				}
			}
		}
		if p.From.Type == obj.TYPE_SHIFT && (p.To.Reg == REG_RSP || p.Reg == REG_RSP) {
			offset := p.From.Offset
			op := offset & (3 << 22)

				if ctxt.Debugvlog || !ctxt.IsAsm {
					ctxt.Logf("auto-SPWRITE: %s %v\n", c.cursym.Name, p)
					if !ctxt.IsAsm {
						ctxt.Diag("invalid auto-SPWRITE in non-assembly")
						ctxt.DiagFlush()
						log.Fatalf("bad SPWRITE")
					}
				}
			}
		}
	}

	if c.ctxt.Arch.Family == sys.MIPS {
		// rewrite MOVD into two MOVF in 32-bit mode to avoid unaligned memory access

				if ctxt.Debugvlog || !ctxt.IsAsm {
					ctxt.Logf("auto-SPWRITE: %s %v\n", c.cursym.Name, p)
					if !ctxt.IsAsm {
						ctxt.Diag("invalid auto-SPWRITE in non-assembly")
						ctxt.DiagFlush()
						log.Fatalf("bad SPWRITE")
					}
				}
			}
		}
	}
}

/*
// instruction scheduling

	if(debug['Q'] == 0)
		return;

	curtext = nil;

				}
				r.Siz = 4
				r.Add = p.To.Offset
				r.Sym = p.To.Sym
				ab.PutInt32(0)

			case Zcall, Zcallduff:
				if p.To.Sym == nil {
					ctxt.Diag("call without target")
					ctxt.DiagFlush()
					log.Fatalf("bad code")
				}

				if yt.zcase == Zcallduff && ctxt.Flag_dynlink {
					ctxt.Diag("directly calling duff when dynamically linking Go")
				}