github.com/shogo82148/std@v1.22.1-0.20240327122250-4e474527810c/cmd/link/internal/ppc64/asm.go (about)

     1  // Inferno utils/5l/asm.c
     2  // https://bitbucket.org/inferno-os/inferno-os/src/master/utils/5l/asm.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 ppc64
    32  
    33  const (
    34  	// For genstub, the type of stub required by the caller.
    35  	STUB_TOC = iota
    36  	STUB_PCREL
    37  )
    38  
    39  const (
    40  	OP_TOCRESTORE    = 0xe8410018
    41  	OP_TOCSAVE       = 0xf8410018
    42  	OP_NOP           = 0x60000000
    43  	OP_BL            = 0x48000001
    44  	OP_BCTR          = 0x4e800420
    45  	OP_BCTRL         = 0x4e800421
    46  	OP_BCL           = 0x40000001
    47  	OP_ADDI          = 0x38000000
    48  	OP_ADDIS         = 0x3c000000
    49  	OP_LD            = 0xe8000000
    50  	OP_PLA_PFX       = 0x06100000
    51  	OP_PLA_SFX       = 0x38000000
    52  	OP_PLD_PFX_PCREL = 0x04100000
    53  	OP_PLD_SFX       = 0xe4000000
    54  	OP_MFLR          = 0x7c0802a6
    55  	OP_MTLR          = 0x7c0803a6
    56  	OP_MFCTR         = 0x7c0902a6
    57  	OP_MTCTR         = 0x7c0903a6
    58  
    59  	OP_ADDIS_R12_R2  = OP_ADDIS | 12<<21 | 2<<16
    60  	OP_ADDIS_R12_R12 = OP_ADDIS | 12<<21 | 12<<16
    61  	OP_ADDI_R12_R12  = OP_ADDI | 12<<21 | 12<<16
    62  	OP_PLD_SFX_R12   = OP_PLD_SFX | 12<<21
    63  	OP_PLA_SFX_R12   = OP_PLA_SFX | 12<<21
    64  	OP_LIS_R12       = OP_ADDIS | 12<<21
    65  	OP_LD_R12_R12    = OP_LD | 12<<21 | 12<<16
    66  	OP_MTCTR_R12     = OP_MTCTR | 12<<21
    67  	OP_MFLR_R12      = OP_MFLR | 12<<21
    68  	OP_MFLR_R0       = OP_MFLR | 0<<21
    69  	OP_MTLR_R0       = OP_MTLR | 0<<21
    70  
    71  	// This is a special, preferred form of bcl to obtain the next
    72  	// instruction address (NIA, aka PC+4) in LR.
    73  	OP_BCL_NIA = OP_BCL | 20<<21 | 31<<16 | 1<<2
    74  
    75  	// Masks to match opcodes
    76  	MASK_PLD_PFX  = 0xfff70000
    77  	MASK_PLD_SFX  = 0xfc1f0000
    78  	MASK_PLD_RT   = 0x03e00000
    79  	MASK_OP_LD    = 0xfc000003
    80  	MASK_OP_ADDIS = 0xfc000000
    81  )