obj.go

     1  // Copyright 2022 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package loong64
     6  
     7  import (
     8  	"cmd/internal/objabi"
     9  	"cmd/internal/sys"
    10  	"cmd/link/internal/ld"
    11  )
    12  
    13  func Init() (*sys.Arch, ld.Arch) {
    14  	arch := sys.ArchLoong64
    15  
    16  	theArch := ld.Arch{
    17  		Funcalign:        funcAlign,
    18  		Maxalign:         maxAlign,
    19  		Minalign:         minAlign,
    20  		Dwarfregsp:       dwarfRegSP,
    21  		Dwarfreglr:       dwarfRegLR,
    22  		TrampLimit:       0x7c00000,                      // 26-bit signed offset * 4, leave room for PLT etc.
    23  		CodePad:          []byte{0x00, 0x00, 0x2a, 0x00}, // BREAK 0
    24  		Adddynrel:        adddynrel,
    25  		Archinit:         archinit,
    26  		Archreloc:        archreloc,
    27  		Archrelocvariant: archrelocvariant,
    28  		Extreloc:         extreloc,
    29  		Machoreloc1:      machoreloc1,
    30  		Gentext:          gentext,
    31  		Trampoline:       trampoline,
    32  
    33  		ELF: ld.ELFArch{
    34  			Linuxdynld:     "/lib64/ld-linux-loongarch-lp64d.so.1",
    35  			LinuxdynldMusl: "/lib/ld-musl-loongarch64.so.1",
    36  			Freebsddynld:   "XXX",
    37  			Openbsddynld:   "XXX",
    38  			Netbsddynld:    "XXX",
    39  			Dragonflydynld: "XXX",
    40  			Solarisdynld:   "XXX",
    41  
    42  			Reloc1:    elfreloc1,
    43  			RelocSize: 24,
    44  			SetupPLT:  elfsetupplt,
    45  		},
    46  	}
    47  
    48  	return arch, theArch
    49  }
    50  
    51  func archinit(ctxt *ld.Link) {
    52  	switch ctxt.HeadType {
    53  	default:
    54  		ld.Exitf("unknown -H option: %v", ctxt.HeadType)
    55  	case objabi.Hlinux: /* loong64 elf */
    56  		ld.Elfinit(ctxt)
    57  		ld.HEADR = ld.ELFRESERVE
    58  		if *ld.FlagRound == -1 {
    59  			*ld.FlagRound = 0x10000
    60  		}
    61  		if *ld.FlagTextAddr == -1 {
    62  			*ld.FlagTextAddr = ld.Rnd(0x10000, *ld.FlagRound) + int64(ld.HEADR)
    63  		}
    64  	}
    65  }
    66
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