示例#1
0
文件: obj6.go 项目: 0x7cc/rsc
func nacladdr(ctxt *liblink.Link, p *liblink.Prog, a *liblink.Addr) {
	if p.As == ALEAL || p.As == ALEAQ {
		return
	}
	if a.Typ == D_BP || a.Typ == D_INDIR+D_BP {
		ctxt.Diag("invalid address: %P", p)
		return
	}
	if a.Typ == D_INDIR+D_TLS {
		a.Typ = D_INDIR + D_BP
	} else if a.Typ == D_TLS {
		a.Typ = D_BP
	}
	if D_INDIR <= a.Typ && a.Typ <= D_INDIR+D_INDIR {
		switch a.Typ {
		// all ok
		case D_INDIR + D_BP,
			D_INDIR + D_SP,
			D_INDIR + D_R15:
			break
		default:
			if a.Index != D_NONE {
				ctxt.Diag("invalid address %P", p)
			}
			a.Index = a.Typ - D_INDIR
			if a.Index != D_NONE {
				a.Scale = 1
			}
			a.Typ = D_INDIR + D_R15
			break
		}
	}
}
示例#2
0
文件: main.go 项目: 0x7cc/rsc
func readaddr(b *bufio.Reader, a *liblink.Addr) {
	if rdstring(b) != "addr" {
		log.Fatal("out of sync")
	}
	a.Offset = rdint(b)
	a.U.Dval = rdfloat(b)
	buf := make([]byte, 8)
	for i := 0; i < 8; i++ {
		buf[i] = byte(rdint(b))
	}
	a.U.Sval = string(buf)
	a.U.Branch = rdprog(b)
	a.Sym = rdsym(b)
	a.Gotype = rdsym(b)
	a.Typ = int(rdint(b))
	a.Index = int(rdint(b))
	a.Scale = int8(rdint(b))
	a.Reg = int(rdint(b))
	a.Name = int(rdint(b))
	a.Class = int(rdint(b))
	a.Etype = uint8(rdint(b))
	a.Offset2 = int(rdint(b))
	a.Width = rdint(b)
}
示例#3
0
文件: list8.go 项目: 0x7cc/rsc
func Dconv(p *liblink.Prog, flag int, a *liblink.Addr) string {
	var str string
	var s string
	var fp string
	var i int

	i = a.Typ
	if flag&fmtLong != 0 /*untyped*/ {
		if i == D_CONST2 {
			str = fmt.Sprintf("$%d-%d", a.Offset, a.Offset2)
		} else {
			// ATEXT dst is not constant
			str = fmt.Sprintf("!!%v", Dconv(p, 0, a))
		}
		goto brk
	}
	if i >= D_INDIR {
		if a.Offset != 0 {
			str = fmt.Sprintf("%d(%v)", a.Offset, Rconv(i-D_INDIR))
		} else {
			str = fmt.Sprintf("(%v)", Rconv(i-D_INDIR))
		}
		goto brk
	}
	switch i {
	default:
		if a.Offset != 0 {
			str = fmt.Sprintf("$%d,%v", a.Offset, Rconv(i))
		} else {
			str = fmt.Sprintf("%v", Rconv(i))
		}
	case D_NONE:
		str = ""
	case D_BRANCH:
		if a.Sym != nil {
			str = fmt.Sprintf("%s(SB)", a.Sym.Name)
		} else if p != nil && p.Pcond != nil {
			str = fmt.Sprintf("%d", p.Pcond.Pc)
		} else if a.U.Branch != nil {
			str = fmt.Sprintf("%d", a.U.Branch.Pc)
		} else {
			str = fmt.Sprintf("%d(PC)", a.Offset)
		}
	case D_EXTERN:
		str = fmt.Sprintf("%s+%d(SB)", a.Sym.Name, a.Offset)
	case D_STATIC:
		str = fmt.Sprintf("%s<>+%d(SB)", a.Sym.Name, a.Offset)
	case D_AUTO:
		if a.Sym != nil {
			str = fmt.Sprintf("%s+%d(SP)", a.Sym.Name, a.Offset)
		} else {
			str = fmt.Sprintf("%d(SP)", a.Offset)
		}
	case D_PARAM:
		if a.Sym != nil {
			str = fmt.Sprintf("%s+%d(FP)", a.Sym.Name, a.Offset)
		} else {
			str = fmt.Sprintf("%d(FP)", a.Offset)
		}
	case D_CONST:
		str = fmt.Sprintf("$%d", a.Offset)
	case D_CONST2:
		if flag&fmtLong == 0 /*untyped*/ {
			// D_CONST2 outside of ATEXT should not happen
			str = fmt.Sprintf("!!$%d-%d", a.Offset, a.Offset2)
		}
	case D_FCONST:
		str = fmt.Sprintf("$(%.17g)", a.U.Dval)
	case D_SCONST:
		str = fmt.Sprintf("$\"%q\"", a.U.Sval)
	case D_ADDR:
		a.Typ = a.Index
		a.Index = D_NONE
		str = fmt.Sprintf("$%v", Dconv(p, 0, a))
		a.Index = a.Typ
		a.Typ = D_ADDR
		goto conv
	}
brk:
	if a.Index != D_NONE {
		s = fmt.Sprintf("(%v*%d)", Rconv(int(a.Index)), int(a.Scale))
		str += s
	}
conv:
	fp += str
	return fp
}