list5.go raw

   1  // Inferno utils/5c/list.c
   2  // https://bitbucket.org/inferno-os/inferno-os/src/master/utils/5c/list.c
   3  //
   4  //	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
   5  //	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
   6  //	Portions Copyright © 1997-1999 Vita Nuova Limited
   7  //	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
   8  //	Portions Copyright © 2004,2006 Bruce Ellis
   9  //	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
  10  //	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
  11  //	Portions Copyright © 2009 The Go Authors. All rights reserved.
  12  //
  13  // Permission is hereby granted, free of charge, to any person obtaining a copy
  14  // of this software and associated documentation files (the "Software"), to deal
  15  // in the Software without restriction, including without limitation the rights
  16  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  17  // copies of the Software, and to permit persons to whom the Software is
  18  // furnished to do so, subject to the following conditions:
  19  //
  20  // The above copyright notice and this permission notice shall be included in
  21  // all copies or substantial portions of the Software.
  22  //
  23  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  24  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  25  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  26  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  27  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  28  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  29  // THE SOFTWARE.
  30  
  31  package arm
  32  
  33  import (
  34  	"github.com/twitchyliquid64/golang-asm/obj"
  35  	"fmt"
  36  )
  37  
  38  func init() {
  39  	obj.RegisterRegister(obj.RBaseARM, MAXREG, rconv)
  40  	obj.RegisterOpcode(obj.ABaseARM, Anames)
  41  	obj.RegisterRegisterList(obj.RegListARMLo, obj.RegListARMHi, rlconv)
  42  	obj.RegisterOpSuffix("arm", obj.CConvARM)
  43  }
  44  
  45  func rconv(r int) string {
  46  	if r == 0 {
  47  		return "NONE"
  48  	}
  49  	if r == REGG {
  50  		// Special case.
  51  		return "g"
  52  	}
  53  	if REG_R0 <= r && r <= REG_R15 {
  54  		return fmt.Sprintf("R%d", r-REG_R0)
  55  	}
  56  	if REG_F0 <= r && r <= REG_F15 {
  57  		return fmt.Sprintf("F%d", r-REG_F0)
  58  	}
  59  
  60  	switch r {
  61  	case REG_FPSR:
  62  		return "FPSR"
  63  
  64  	case REG_FPCR:
  65  		return "FPCR"
  66  
  67  	case REG_CPSR:
  68  		return "CPSR"
  69  
  70  	case REG_SPSR:
  71  		return "SPSR"
  72  
  73  	case REG_MB_SY:
  74  		return "MB_SY"
  75  	case REG_MB_ST:
  76  		return "MB_ST"
  77  	case REG_MB_ISH:
  78  		return "MB_ISH"
  79  	case REG_MB_ISHST:
  80  		return "MB_ISHST"
  81  	case REG_MB_NSH:
  82  		return "MB_NSH"
  83  	case REG_MB_NSHST:
  84  		return "MB_NSHST"
  85  	case REG_MB_OSH:
  86  		return "MB_OSH"
  87  	case REG_MB_OSHST:
  88  		return "MB_OSHST"
  89  	}
  90  
  91  	return fmt.Sprintf("Rgok(%d)", r-obj.RBaseARM)
  92  }
  93  
  94  func DRconv(a int) string {
  95  	s := "C_??"
  96  	if a >= C_NONE && a <= C_NCLASS {
  97  		s = cnames5[a]
  98  	}
  99  	var fp string
 100  	fp += s
 101  	return fp
 102  }
 103  
 104  func rlconv(list int64) string {
 105  	str := ""
 106  	for i := 0; i < 16; i++ {
 107  		if list&(1<<uint(i)) != 0 {
 108  			if str == "" {
 109  				str += "["
 110  			} else {
 111  				str += ","
 112  			}
 113  			// This is ARM-specific; R10 is g.
 114  			if i == REGG-REG_R0 {
 115  				str += "g"
 116  			} else {
 117  				str += fmt.Sprintf("R%d", i)
 118  			}
 119  		}
 120  	}
 121  
 122  	str += "]"
 123  	return str
 124  }
 125