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      1 // cmd/9l/list.c from Vita Nuova.
      2 //
      3 //	Copyright  1994-1999 Lucent Technologies Inc.  All rights reserved.
      4 //	Portions Copyright  1995-1997 C H Forsyth (forsyth (a] terzarima.net)
      5 //	Portions Copyright  1997-1999 Vita Nuova Limited
      6 //	Portions Copyright  2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com)
      7 //	Portions Copyright  2004,2006 Bruce Ellis
      8 //	Portions Copyright  2005-2007 C H Forsyth (forsyth (a] terzarima.net)
      9 //	Revisions Copyright  2000-2008 Lucent Technologies Inc. and others
     10 //	Portions Copyright  2009 The Go Authors.  All rights reserved.
     11 //
     12 // Permission is hereby granted, free of charge, to any person obtaining a copy
     13 // of this software and associated documentation files (the "Software"), to deal
     14 // in the Software without restriction, including without limitation the rights
     15 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     16 // copies of the Software, and to permit persons to whom the Software is
     17 // furnished to do so, subject to the following conditions:
     18 //
     19 // The above copyright notice and this permission notice shall be included in
     20 // all copies or substantial portions of the Software.
     21 //
     22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     23 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     24 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
     25 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     26 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     27 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     28 // THE SOFTWARE.
     29 
     30 package ppc64
     31 
     32 import (
     33 	"cmd/internal/obj"
     34 	"fmt"
     35 )
     36 
     37 func init() {
     38 	obj.RegisterRegister(obj.RBasePPC64, REG_DCR0+1024, Rconv)
     39 	obj.RegisterOpcode(obj.ABasePPC64, Anames)
     40 }
     41 
     42 func Rconv(r int) string {
     43 	if r == 0 {
     44 		return "NONE"
     45 	}
     46 	if r == REGG {
     47 		// Special case.
     48 		return "g"
     49 	}
     50 	if REG_R0 <= r && r <= REG_R31 {
     51 		return fmt.Sprintf("R%d", r-REG_R0)
     52 	}
     53 	if REG_F0 <= r && r <= REG_F31 {
     54 		return fmt.Sprintf("F%d", r-REG_F0)
     55 	}
     56 	if REG_CR0 <= r && r <= REG_CR7 {
     57 		return fmt.Sprintf("CR%d", r-REG_CR0)
     58 	}
     59 	if r == REG_CR {
     60 		return "CR"
     61 	}
     62 	if REG_SPR0 <= r && r <= REG_SPR0+1023 {
     63 		switch r {
     64 		case REG_XER:
     65 			return "XER"
     66 
     67 		case REG_LR:
     68 			return "LR"
     69 
     70 		case REG_CTR:
     71 			return "CTR"
     72 		}
     73 
     74 		return fmt.Sprintf("SPR(%d)", r-REG_SPR0)
     75 	}
     76 
     77 	if REG_DCR0 <= r && r <= REG_DCR0+1023 {
     78 		return fmt.Sprintf("DCR(%d)", r-REG_DCR0)
     79 	}
     80 	if r == REG_FPSCR {
     81 		return "FPSCR"
     82 	}
     83 	if r == REG_MSR {
     84 		return "MSR"
     85 	}
     86 
     87 	return fmt.Sprintf("Rgok(%d)", r-obj.RBasePPC64)
     88 }
     89 
     90 func DRconv(a int) string {
     91 	s := "C_??"
     92 	if a >= C_NONE && a <= C_NCLASS {
     93 		s = cnames9[a]
     94 	}
     95 	var fp string
     96 	fp += s
     97 	return fp
     98 }
     99