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Follows suit with https://go-review.googlesource.com/#/c/20111. Generated by running $ grep -R 'Go Authors. All' * | cut -d":" -f1 | while read F;do perl -pi -e 's/Go Authors. All/Go Authors. All/g' $F;done The code in cmd/internal/unvendor wasn't changed. Fixes #15213 Change-Id: I4f235cee0a62ec435f9e8540a1ec08ae03b1a75f Reviewed-on: https://go-review.googlesource.com/21819 Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
729 lines
18 KiB
Go
729 lines
18 KiB
Go
// Inferno utils/5l/asm.c
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// http://code.google.com/p/inferno-os/source/browse/utils/5l/asm.c
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//
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// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
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// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
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// Portions Copyright © 1997-1999 Vita Nuova Limited
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// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
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// Portions Copyright © 2004,2006 Bruce Ellis
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// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
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// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
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// Portions Copyright © 2009 The Go Authors. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package arm
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import (
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"cmd/internal/obj"
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"cmd/link/internal/ld"
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"fmt"
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"log"
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)
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// This assembler:
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//
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// .align 2
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// local.dso_init:
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// ldr r0, .Lmoduledata
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// .Lloadfrom:
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// ldr r0, [r0]
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// b runtime.addmoduledata@plt
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// .align 2
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// .Lmoduledata:
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// .word local.moduledata(GOT_PREL) + (. - (.Lloadfrom + 4))
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// assembles to:
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//
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// 00000000 <local.dso_init>:
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// 0: e59f0004 ldr r0, [pc, #4] ; c <local.dso_init+0xc>
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// 4: e5900000 ldr r0, [r0]
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// 8: eafffffe b 0 <runtime.addmoduledata>
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// 8: R_ARM_JUMP24 runtime.addmoduledata
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// c: 00000004 .word 0x00000004
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// c: R_ARM_GOT_PREL local.moduledata
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func gentext() {
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if !ld.DynlinkingGo() {
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return
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}
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addmoduledata := ld.Linklookup(ld.Ctxt, "runtime.addmoduledata", 0)
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if addmoduledata.Type == obj.STEXT {
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// we're linking a module containing the runtime -> no need for
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// an init function
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return
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}
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addmoduledata.Attr |= ld.AttrReachable
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initfunc := ld.Linklookup(ld.Ctxt, "go.link.addmoduledata", 0)
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initfunc.Type = obj.STEXT
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initfunc.Attr |= ld.AttrLocal
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initfunc.Attr |= ld.AttrReachable
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o := func(op uint32) {
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ld.Adduint32(ld.Ctxt, initfunc, op)
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}
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o(0xe59f0004)
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o(0xe08f0000)
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o(0xeafffffe)
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rel := ld.Addrel(initfunc)
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rel.Off = 8
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rel.Siz = 4
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rel.Sym = ld.Linklookup(ld.Ctxt, "runtime.addmoduledata", 0)
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rel.Type = obj.R_CALLARM
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rel.Add = 0xeafffffe // vomit
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o(0x00000000)
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rel = ld.Addrel(initfunc)
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rel.Off = 12
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rel.Siz = 4
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rel.Sym = ld.Ctxt.Moduledata
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rel.Type = obj.R_PCREL
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rel.Add = 4
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ld.Ctxt.Textp = append(ld.Ctxt.Textp, initfunc)
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initarray_entry := ld.Linklookup(ld.Ctxt, "go.link.addmoduledatainit", 0)
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initarray_entry.Attr |= ld.AttrReachable
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initarray_entry.Attr |= ld.AttrLocal
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initarray_entry.Type = obj.SINITARR
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ld.Addaddr(ld.Ctxt, initarray_entry, initfunc)
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}
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// Preserve highest 8 bits of a, and do addition to lower 24-bit
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// of a and b; used to adjust ARM branch instruction's target
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func braddoff(a int32, b int32) int32 {
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return int32((uint32(a))&0xff000000 | 0x00ffffff&uint32(a+b))
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}
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func adddynrel(s *ld.LSym, r *ld.Reloc) {
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targ := r.Sym
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ld.Ctxt.Cursym = s
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switch r.Type {
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default:
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if r.Type >= 256 {
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ld.Diag("unexpected relocation type %d", r.Type)
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return
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}
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// Handle relocations found in ELF object files.
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case 256 + ld.R_ARM_PLT32:
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r.Type = obj.R_CALLARM
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if targ.Type == obj.SDYNIMPORT {
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addpltsym(ld.Ctxt, targ)
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r.Sym = ld.Linklookup(ld.Ctxt, ".plt", 0)
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r.Add = int64(braddoff(int32(r.Add), targ.Plt/4))
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}
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return
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case 256 + ld.R_ARM_THM_PC22: // R_ARM_THM_CALL
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ld.Exitf("R_ARM_THM_CALL, are you using -marm?")
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return
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case 256 + ld.R_ARM_GOT32: // R_ARM_GOT_BREL
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if targ.Type != obj.SDYNIMPORT {
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addgotsyminternal(ld.Ctxt, targ)
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} else {
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addgotsym(ld.Ctxt, targ)
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}
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r.Type = obj.R_CONST // write r->add during relocsym
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r.Sym = nil
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r.Add += int64(targ.Got)
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return
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case 256 + ld.R_ARM_GOT_PREL: // GOT(nil) + A - nil
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if targ.Type != obj.SDYNIMPORT {
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addgotsyminternal(ld.Ctxt, targ)
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} else {
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addgotsym(ld.Ctxt, targ)
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}
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r.Type = obj.R_PCREL
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r.Sym = ld.Linklookup(ld.Ctxt, ".got", 0)
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r.Add += int64(targ.Got) + 4
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return
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case 256 + ld.R_ARM_GOTOFF: // R_ARM_GOTOFF32
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r.Type = obj.R_GOTOFF
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return
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case 256 + ld.R_ARM_GOTPC: // R_ARM_BASE_PREL
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r.Type = obj.R_PCREL
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r.Sym = ld.Linklookup(ld.Ctxt, ".got", 0)
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r.Add += 4
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return
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case 256 + ld.R_ARM_CALL:
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r.Type = obj.R_CALLARM
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if targ.Type == obj.SDYNIMPORT {
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addpltsym(ld.Ctxt, targ)
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r.Sym = ld.Linklookup(ld.Ctxt, ".plt", 0)
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r.Add = int64(braddoff(int32(r.Add), targ.Plt/4))
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}
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return
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case 256 + ld.R_ARM_REL32: // R_ARM_REL32
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r.Type = obj.R_PCREL
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r.Add += 4
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return
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case 256 + ld.R_ARM_ABS32:
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if targ.Type == obj.SDYNIMPORT {
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ld.Diag("unexpected R_ARM_ABS32 relocation for dynamic symbol %s", targ.Name)
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}
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r.Type = obj.R_ADDR
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return
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// we can just ignore this, because we are targeting ARM V5+ anyway
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case 256 + ld.R_ARM_V4BX:
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if r.Sym != nil {
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// R_ARM_V4BX is ABS relocation, so this symbol is a dummy symbol, ignore it
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r.Sym.Type = 0
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}
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r.Sym = nil
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return
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case 256 + ld.R_ARM_PC24,
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256 + ld.R_ARM_JUMP24:
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r.Type = obj.R_CALLARM
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if targ.Type == obj.SDYNIMPORT {
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addpltsym(ld.Ctxt, targ)
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r.Sym = ld.Linklookup(ld.Ctxt, ".plt", 0)
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r.Add = int64(braddoff(int32(r.Add), targ.Plt/4))
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}
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return
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}
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// Handle references to ELF symbols from our own object files.
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if targ.Type != obj.SDYNIMPORT {
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return
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}
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switch r.Type {
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case obj.R_CALLARM:
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addpltsym(ld.Ctxt, targ)
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r.Sym = ld.Linklookup(ld.Ctxt, ".plt", 0)
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r.Add = int64(targ.Plt)
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return
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case obj.R_ADDR:
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if s.Type != obj.SDATA {
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break
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}
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if ld.Iself {
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ld.Adddynsym(ld.Ctxt, targ)
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rel := ld.Linklookup(ld.Ctxt, ".rel", 0)
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ld.Addaddrplus(ld.Ctxt, rel, s, int64(r.Off))
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ld.Adduint32(ld.Ctxt, rel, ld.ELF32_R_INFO(uint32(targ.Dynid), ld.R_ARM_GLOB_DAT)) // we need a nil + A dynamic reloc
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r.Type = obj.R_CONST // write r->add during relocsym
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r.Sym = nil
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return
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}
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}
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ld.Ctxt.Cursym = s
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ld.Diag("unsupported relocation for dynamic symbol %s (type=%d stype=%d)", targ.Name, r.Type, targ.Type)
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}
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func elfreloc1(r *ld.Reloc, sectoff int64) int {
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ld.Thearch.Lput(uint32(sectoff))
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elfsym := r.Xsym.ElfsymForReloc()
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switch r.Type {
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default:
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return -1
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case obj.R_ADDR:
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if r.Siz == 4 {
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ld.Thearch.Lput(ld.R_ARM_ABS32 | uint32(elfsym)<<8)
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} else {
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return -1
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}
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case obj.R_PCREL:
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if r.Siz == 4 {
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ld.Thearch.Lput(ld.R_ARM_REL32 | uint32(elfsym)<<8)
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} else {
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return -1
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}
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case obj.R_CALLARM:
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if r.Siz == 4 {
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if r.Add&0xff000000 == 0xeb000000 { // BL
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ld.Thearch.Lput(ld.R_ARM_CALL | uint32(elfsym)<<8)
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} else {
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ld.Thearch.Lput(ld.R_ARM_JUMP24 | uint32(elfsym)<<8)
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}
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} else {
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return -1
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}
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case obj.R_TLS_LE:
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ld.Thearch.Lput(ld.R_ARM_TLS_LE32 | uint32(elfsym)<<8)
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case obj.R_TLS_IE:
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ld.Thearch.Lput(ld.R_ARM_TLS_IE32 | uint32(elfsym)<<8)
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case obj.R_GOTPCREL:
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if r.Siz == 4 {
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ld.Thearch.Lput(ld.R_ARM_GOT_PREL | uint32(elfsym)<<8)
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} else {
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return -1
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}
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}
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return 0
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}
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func elfsetupplt() {
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plt := ld.Linklookup(ld.Ctxt, ".plt", 0)
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got := ld.Linklookup(ld.Ctxt, ".got.plt", 0)
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if plt.Size == 0 {
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// str lr, [sp, #-4]!
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ld.Adduint32(ld.Ctxt, plt, 0xe52de004)
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// ldr lr, [pc, #4]
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ld.Adduint32(ld.Ctxt, plt, 0xe59fe004)
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// add lr, pc, lr
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ld.Adduint32(ld.Ctxt, plt, 0xe08fe00e)
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// ldr pc, [lr, #8]!
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ld.Adduint32(ld.Ctxt, plt, 0xe5bef008)
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// .word &GLOBAL_OFFSET_TABLE[0] - .
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ld.Addpcrelplus(ld.Ctxt, plt, got, 4)
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// the first .plt entry requires 3 .plt.got entries
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ld.Adduint32(ld.Ctxt, got, 0)
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ld.Adduint32(ld.Ctxt, got, 0)
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ld.Adduint32(ld.Ctxt, got, 0)
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}
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}
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func machoreloc1(r *ld.Reloc, sectoff int64) int {
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var v uint32
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rs := r.Xsym
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if r.Type == obj.R_PCREL {
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if rs.Type == obj.SHOSTOBJ {
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ld.Diag("pc-relative relocation of external symbol is not supported")
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return -1
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}
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if r.Siz != 4 {
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return -1
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}
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// emit a pair of "scattered" relocations that
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// resolve to the difference of section addresses of
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// the symbol and the instruction
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// this value is added to the field being relocated
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o1 := uint32(sectoff)
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o1 |= 1 << 31 // scattered bit
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o1 |= ld.MACHO_ARM_RELOC_SECTDIFF << 24
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o1 |= 2 << 28 // size = 4
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o2 := uint32(0)
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o2 |= 1 << 31 // scattered bit
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o2 |= ld.MACHO_ARM_RELOC_PAIR << 24
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o2 |= 2 << 28 // size = 4
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ld.Thearch.Lput(o1)
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ld.Thearch.Lput(uint32(ld.Symaddr(rs)))
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ld.Thearch.Lput(o2)
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ld.Thearch.Lput(uint32(ld.Ctxt.Cursym.Value + int64(r.Off)))
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return 0
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}
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if rs.Type == obj.SHOSTOBJ || r.Type == obj.R_CALLARM {
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if rs.Dynid < 0 {
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ld.Diag("reloc %d to non-macho symbol %s type=%d", r.Type, rs.Name, rs.Type)
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return -1
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}
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v = uint32(rs.Dynid)
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v |= 1 << 27 // external relocation
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} else {
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v = uint32(rs.Sect.Extnum)
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if v == 0 {
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ld.Diag("reloc %d to symbol %s in non-macho section %s type=%d", r.Type, rs.Name, rs.Sect.Name, rs.Type)
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return -1
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}
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}
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switch r.Type {
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default:
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return -1
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case obj.R_ADDR:
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v |= ld.MACHO_GENERIC_RELOC_VANILLA << 28
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case obj.R_CALLARM:
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v |= 1 << 24 // pc-relative bit
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v |= ld.MACHO_ARM_RELOC_BR24 << 28
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}
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switch r.Siz {
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default:
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return -1
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case 1:
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v |= 0 << 25
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case 2:
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v |= 1 << 25
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case 4:
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v |= 2 << 25
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case 8:
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v |= 3 << 25
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}
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ld.Thearch.Lput(uint32(sectoff))
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ld.Thearch.Lput(v)
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return 0
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}
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func archreloc(r *ld.Reloc, s *ld.LSym, val *int64) int {
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if ld.Linkmode == ld.LinkExternal {
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switch r.Type {
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case obj.R_CALLARM:
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r.Done = 0
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// set up addend for eventual relocation via outer symbol.
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rs := r.Sym
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r.Xadd = r.Add
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if r.Xadd&0x800000 != 0 {
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r.Xadd |= ^0xffffff
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}
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r.Xadd *= 4
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for rs.Outer != nil {
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r.Xadd += ld.Symaddr(rs) - ld.Symaddr(rs.Outer)
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rs = rs.Outer
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}
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if rs.Type != obj.SHOSTOBJ && rs.Type != obj.SDYNIMPORT && rs.Sect == nil {
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ld.Diag("missing section for %s", rs.Name)
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}
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r.Xsym = rs
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// ld64 for arm seems to want the symbol table to contain offset
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// into the section rather than pseudo virtual address that contains
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// the section load address.
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// we need to compensate that by removing the instruction's address
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// from addend.
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if ld.HEADTYPE == obj.Hdarwin {
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r.Xadd -= ld.Symaddr(s) + int64(r.Off)
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}
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*val = int64(braddoff(int32(0xff000000&uint32(r.Add)), int32(0xffffff&uint32(r.Xadd/4))))
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return 0
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}
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return -1
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}
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switch r.Type {
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case obj.R_CONST:
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*val = r.Add
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return 0
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case obj.R_GOTOFF:
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*val = ld.Symaddr(r.Sym) + r.Add - ld.Symaddr(ld.Linklookup(ld.Ctxt, ".got", 0))
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return 0
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// The following three arch specific relocations are only for generation of
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// Linux/ARM ELF's PLT entry (3 assembler instruction)
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case obj.R_PLT0: // add ip, pc, #0xXX00000
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if ld.Symaddr(ld.Linklookup(ld.Ctxt, ".got.plt", 0)) < ld.Symaddr(ld.Linklookup(ld.Ctxt, ".plt", 0)) {
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ld.Diag(".got.plt should be placed after .plt section.")
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}
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*val = 0xe28fc600 + (0xff & (int64(uint32(ld.Symaddr(r.Sym)-(ld.Symaddr(ld.Linklookup(ld.Ctxt, ".plt", 0))+int64(r.Off))+r.Add)) >> 20))
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return 0
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case obj.R_PLT1: // add ip, ip, #0xYY000
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*val = 0xe28cca00 + (0xff & (int64(uint32(ld.Symaddr(r.Sym)-(ld.Symaddr(ld.Linklookup(ld.Ctxt, ".plt", 0))+int64(r.Off))+r.Add+4)) >> 12))
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return 0
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case obj.R_PLT2: // ldr pc, [ip, #0xZZZ]!
|
|
*val = 0xe5bcf000 + (0xfff & int64(uint32(ld.Symaddr(r.Sym)-(ld.Symaddr(ld.Linklookup(ld.Ctxt, ".plt", 0))+int64(r.Off))+r.Add+8)))
|
|
|
|
return 0
|
|
|
|
case obj.R_CALLARM: // bl XXXXXX or b YYYYYY
|
|
*val = int64(braddoff(int32(0xff000000&uint32(r.Add)), int32(0xffffff&uint32((ld.Symaddr(r.Sym)+int64((uint32(r.Add))*4)-(s.Value+int64(r.Off)))/4))))
|
|
|
|
return 0
|
|
}
|
|
|
|
return -1
|
|
}
|
|
|
|
func archrelocvariant(r *ld.Reloc, s *ld.LSym, t int64) int64 {
|
|
log.Fatalf("unexpected relocation variant")
|
|
return t
|
|
}
|
|
|
|
func addpltreloc(ctxt *ld.Link, plt *ld.LSym, got *ld.LSym, sym *ld.LSym, typ int) *ld.Reloc {
|
|
r := ld.Addrel(plt)
|
|
r.Sym = got
|
|
r.Off = int32(plt.Size)
|
|
r.Siz = 4
|
|
r.Type = int32(typ)
|
|
r.Add = int64(sym.Got) - 8
|
|
|
|
plt.Attr |= ld.AttrReachable
|
|
plt.Size += 4
|
|
ld.Symgrow(ctxt, plt, plt.Size)
|
|
|
|
return r
|
|
}
|
|
|
|
func addpltsym(ctxt *ld.Link, s *ld.LSym) {
|
|
if s.Plt >= 0 {
|
|
return
|
|
}
|
|
|
|
ld.Adddynsym(ctxt, s)
|
|
|
|
if ld.Iself {
|
|
plt := ld.Linklookup(ctxt, ".plt", 0)
|
|
got := ld.Linklookup(ctxt, ".got.plt", 0)
|
|
rel := ld.Linklookup(ctxt, ".rel.plt", 0)
|
|
if plt.Size == 0 {
|
|
elfsetupplt()
|
|
}
|
|
|
|
// .got entry
|
|
s.Got = int32(got.Size)
|
|
|
|
// In theory, all GOT should point to the first PLT entry,
|
|
// Linux/ARM's dynamic linker will do that for us, but FreeBSD/ARM's
|
|
// dynamic linker won't, so we'd better do it ourselves.
|
|
ld.Addaddrplus(ctxt, got, plt, 0)
|
|
|
|
// .plt entry, this depends on the .got entry
|
|
s.Plt = int32(plt.Size)
|
|
|
|
addpltreloc(ctxt, plt, got, s, obj.R_PLT0) // add lr, pc, #0xXX00000
|
|
addpltreloc(ctxt, plt, got, s, obj.R_PLT1) // add lr, lr, #0xYY000
|
|
addpltreloc(ctxt, plt, got, s, obj.R_PLT2) // ldr pc, [lr, #0xZZZ]!
|
|
|
|
// rel
|
|
ld.Addaddrplus(ctxt, rel, got, int64(s.Got))
|
|
|
|
ld.Adduint32(ctxt, rel, ld.ELF32_R_INFO(uint32(s.Dynid), ld.R_ARM_JUMP_SLOT))
|
|
} else {
|
|
ld.Diag("addpltsym: unsupported binary format")
|
|
}
|
|
}
|
|
|
|
func addgotsyminternal(ctxt *ld.Link, s *ld.LSym) {
|
|
if s.Got >= 0 {
|
|
return
|
|
}
|
|
|
|
got := ld.Linklookup(ctxt, ".got", 0)
|
|
s.Got = int32(got.Size)
|
|
|
|
ld.Addaddrplus(ctxt, got, s, 0)
|
|
|
|
if ld.Iself {
|
|
} else {
|
|
ld.Diag("addgotsyminternal: unsupported binary format")
|
|
}
|
|
}
|
|
|
|
func addgotsym(ctxt *ld.Link, s *ld.LSym) {
|
|
if s.Got >= 0 {
|
|
return
|
|
}
|
|
|
|
ld.Adddynsym(ctxt, s)
|
|
got := ld.Linklookup(ctxt, ".got", 0)
|
|
s.Got = int32(got.Size)
|
|
ld.Adduint32(ctxt, got, 0)
|
|
|
|
if ld.Iself {
|
|
rel := ld.Linklookup(ctxt, ".rel", 0)
|
|
ld.Addaddrplus(ctxt, rel, got, int64(s.Got))
|
|
ld.Adduint32(ctxt, rel, ld.ELF32_R_INFO(uint32(s.Dynid), ld.R_ARM_GLOB_DAT))
|
|
} else {
|
|
ld.Diag("addgotsym: unsupported binary format")
|
|
}
|
|
}
|
|
|
|
func asmb() {
|
|
if ld.Debug['v'] != 0 {
|
|
fmt.Fprintf(ld.Bso, "%5.2f asmb\n", obj.Cputime())
|
|
}
|
|
ld.Bso.Flush()
|
|
|
|
if ld.Iself {
|
|
ld.Asmbelfsetup()
|
|
}
|
|
|
|
sect := ld.Segtext.Sect
|
|
ld.Cseek(int64(sect.Vaddr - ld.Segtext.Vaddr + ld.Segtext.Fileoff))
|
|
ld.Codeblk(int64(sect.Vaddr), int64(sect.Length))
|
|
for sect = sect.Next; sect != nil; sect = sect.Next {
|
|
ld.Cseek(int64(sect.Vaddr - ld.Segtext.Vaddr + ld.Segtext.Fileoff))
|
|
ld.Datblk(int64(sect.Vaddr), int64(sect.Length))
|
|
}
|
|
|
|
if ld.Segrodata.Filelen > 0 {
|
|
if ld.Debug['v'] != 0 {
|
|
fmt.Fprintf(ld.Bso, "%5.2f rodatblk\n", obj.Cputime())
|
|
}
|
|
ld.Bso.Flush()
|
|
|
|
ld.Cseek(int64(ld.Segrodata.Fileoff))
|
|
ld.Datblk(int64(ld.Segrodata.Vaddr), int64(ld.Segrodata.Filelen))
|
|
}
|
|
|
|
if ld.Debug['v'] != 0 {
|
|
fmt.Fprintf(ld.Bso, "%5.2f datblk\n", obj.Cputime())
|
|
}
|
|
ld.Bso.Flush()
|
|
|
|
ld.Cseek(int64(ld.Segdata.Fileoff))
|
|
ld.Datblk(int64(ld.Segdata.Vaddr), int64(ld.Segdata.Filelen))
|
|
|
|
ld.Cseek(int64(ld.Segdwarf.Fileoff))
|
|
ld.Dwarfblk(int64(ld.Segdwarf.Vaddr), int64(ld.Segdwarf.Filelen))
|
|
|
|
machlink := uint32(0)
|
|
if ld.HEADTYPE == obj.Hdarwin {
|
|
machlink = uint32(ld.Domacholink())
|
|
}
|
|
|
|
/* output symbol table */
|
|
ld.Symsize = 0
|
|
|
|
ld.Lcsize = 0
|
|
symo := uint32(0)
|
|
if ld.Debug['s'] == 0 {
|
|
// TODO: rationalize
|
|
if ld.Debug['v'] != 0 {
|
|
fmt.Fprintf(ld.Bso, "%5.2f sym\n", obj.Cputime())
|
|
}
|
|
ld.Bso.Flush()
|
|
switch ld.HEADTYPE {
|
|
default:
|
|
if ld.Iself {
|
|
symo = uint32(ld.Segdwarf.Fileoff + ld.Segdwarf.Filelen)
|
|
symo = uint32(ld.Rnd(int64(symo), int64(ld.INITRND)))
|
|
}
|
|
|
|
case obj.Hplan9:
|
|
symo = uint32(ld.Segdata.Fileoff + ld.Segdata.Filelen)
|
|
|
|
case obj.Hdarwin:
|
|
symo = uint32(ld.Segdwarf.Fileoff + uint64(ld.Rnd(int64(ld.Segdwarf.Filelen), int64(ld.INITRND))) + uint64(machlink))
|
|
}
|
|
|
|
ld.Cseek(int64(symo))
|
|
switch ld.HEADTYPE {
|
|
default:
|
|
if ld.Iself {
|
|
if ld.Debug['v'] != 0 {
|
|
fmt.Fprintf(ld.Bso, "%5.2f elfsym\n", obj.Cputime())
|
|
}
|
|
ld.Asmelfsym()
|
|
ld.Cflush()
|
|
ld.Cwrite(ld.Elfstrdat)
|
|
|
|
if ld.Linkmode == ld.LinkExternal {
|
|
ld.Elfemitreloc()
|
|
}
|
|
}
|
|
|
|
case obj.Hplan9:
|
|
ld.Asmplan9sym()
|
|
ld.Cflush()
|
|
|
|
sym := ld.Linklookup(ld.Ctxt, "pclntab", 0)
|
|
if sym != nil {
|
|
ld.Lcsize = int32(len(sym.P))
|
|
for i := 0; int32(i) < ld.Lcsize; i++ {
|
|
ld.Cput(sym.P[i])
|
|
}
|
|
|
|
ld.Cflush()
|
|
}
|
|
|
|
case obj.Hdarwin:
|
|
if ld.Linkmode == ld.LinkExternal {
|
|
ld.Machoemitreloc()
|
|
}
|
|
}
|
|
}
|
|
|
|
ld.Ctxt.Cursym = nil
|
|
if ld.Debug['v'] != 0 {
|
|
fmt.Fprintf(ld.Bso, "%5.2f header\n", obj.Cputime())
|
|
}
|
|
ld.Bso.Flush()
|
|
ld.Cseek(0)
|
|
switch ld.HEADTYPE {
|
|
default:
|
|
case obj.Hplan9: /* plan 9 */
|
|
ld.Lputb(0x647) /* magic */
|
|
ld.Lputb(uint32(ld.Segtext.Filelen)) /* sizes */
|
|
ld.Lputb(uint32(ld.Segdata.Filelen))
|
|
ld.Lputb(uint32(ld.Segdata.Length - ld.Segdata.Filelen))
|
|
ld.Lputb(uint32(ld.Symsize)) /* nsyms */
|
|
ld.Lputb(uint32(ld.Entryvalue())) /* va of entry */
|
|
ld.Lputb(0)
|
|
ld.Lputb(uint32(ld.Lcsize))
|
|
|
|
case obj.Hlinux,
|
|
obj.Hfreebsd,
|
|
obj.Hnetbsd,
|
|
obj.Hopenbsd,
|
|
obj.Hnacl:
|
|
ld.Asmbelf(int64(symo))
|
|
|
|
case obj.Hdarwin:
|
|
ld.Asmbmacho()
|
|
}
|
|
|
|
ld.Cflush()
|
|
if ld.Debug['c'] != 0 {
|
|
fmt.Printf("textsize=%d\n", ld.Segtext.Filelen)
|
|
fmt.Printf("datsize=%d\n", ld.Segdata.Filelen)
|
|
fmt.Printf("bsssize=%d\n", ld.Segdata.Length-ld.Segdata.Filelen)
|
|
fmt.Printf("symsize=%d\n", ld.Symsize)
|
|
fmt.Printf("lcsize=%d\n", ld.Lcsize)
|
|
fmt.Printf("total=%d\n", ld.Segtext.Filelen+ld.Segdata.Length+uint64(ld.Symsize)+uint64(ld.Lcsize))
|
|
}
|
|
}
|