Source file src/cmd/internal/obj/arm/list5.go

Documentation: cmd/internal/obj/arm

     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  	"cmd/internal/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  

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