github.com/FenixAra/go@v0.0.0-20170127160404-96ea0918e670/src/cmd/internal/obj/ppc64/list9.go (about)

     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@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@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_V0 <= r && r <= REG_V31 {
    57  		return fmt.Sprintf("V%d", r-REG_V0)
    58  	}
    59  	if REG_VS0 <= r && r <= REG_VS63 {
    60  		return fmt.Sprintf("VS%d", r-REG_VS0)
    61  	}
    62  	if REG_CR0 <= r && r <= REG_CR7 {
    63  		return fmt.Sprintf("CR%d", r-REG_CR0)
    64  	}
    65  	if r == REG_CR {
    66  		return "CR"
    67  	}
    68  	if REG_SPR0 <= r && r <= REG_SPR0+1023 {
    69  		switch r {
    70  		case REG_XER:
    71  			return "XER"
    72  
    73  		case REG_LR:
    74  			return "LR"
    75  
    76  		case REG_CTR:
    77  			return "CTR"
    78  		}
    79  
    80  		return fmt.Sprintf("SPR(%d)", r-REG_SPR0)
    81  	}
    82  
    83  	if REG_DCR0 <= r && r <= REG_DCR0+1023 {
    84  		return fmt.Sprintf("DCR(%d)", r-REG_DCR0)
    85  	}
    86  	if r == REG_FPSCR {
    87  		return "FPSCR"
    88  	}
    89  	if r == REG_MSR {
    90  		return "MSR"
    91  	}
    92  
    93  	return fmt.Sprintf("Rgok(%d)", r-obj.RBasePPC64)
    94  }
    95  
    96  func DRconv(a int) string {
    97  	s := "C_??"
    98  	if a >= C_NONE && a <= C_NCLASS {
    99  		s = cnames9[a]
   100  	}
   101  	var fp string
   102  	fp += s
   103  	return fp
   104  }