void
doelf(void)
{
Sym *s, *shstrtab, *dynstr;
if(!iself)
return;
/* predefine strings we need for section headers */
shstrtab = lookup(".shstrtab", 0);
shstrtab->type = SELFROSECT;
shstrtab->reachable = 1;
addstring(shstrtab, "");
addstring(shstrtab, ".text");
addstring(shstrtab, ".noptrdata");
addstring(shstrtab, ".data");
addstring(shstrtab, ".bss");
addstring(shstrtab, ".noptrbss");
if(HEADTYPE == Hnetbsd)
addstring(shstrtab, ".note.netbsd.ident");
if(HEADTYPE == Hopenbsd)
addstring(shstrtab, ".note.openbsd.ident");
if(buildinfolen > 0)
addstring(shstrtab, ".note.gnu.build-id");
addstring(shstrtab, ".elfdata");
addstring(shstrtab, ".rodata");
addstring(shstrtab, ".typelink");
if(flag_shared)
addstring(shstrtab, ".data.rel.ro");
addstring(shstrtab, ".gcdata");
addstring(shstrtab, ".gcbss");
addstring(shstrtab, ".gosymtab");
addstring(shstrtab, ".gopclntab");
if(isobj) {
debug['s'] = 0;
debug['d'] = 1;
if(thechar == '6') {
addstring(shstrtab, ".rela.text");
addstring(shstrtab, ".rela.rodata");
addstring(shstrtab, ".rela.typelink");
addstring(shstrtab, ".rela.gcdata");
addstring(shstrtab, ".rela.gcbss");
addstring(shstrtab, ".rela.gosymtab");
addstring(shstrtab, ".rela.gopclntab");
addstring(shstrtab, ".rela.noptrdata");
addstring(shstrtab, ".rela.data");
} else {
addstring(shstrtab, ".rel.text");
addstring(shstrtab, ".rel.rodata");
addstring(shstrtab, ".rel.typelink");
addstring(shstrtab, ".rel.gcdata");
addstring(shstrtab, ".rel.gcbss");
addstring(shstrtab, ".rel.gosymtab");
addstring(shstrtab, ".rel.gopclntab");
addstring(shstrtab, ".rel.noptrdata");
addstring(shstrtab, ".rel.data");
}
}
if(!debug['s']) {
addstring(shstrtab, ".symtab");
addstring(shstrtab, ".strtab");
dwarfaddshstrings(shstrtab);
}
addstring(shstrtab, ".shstrtab");
if(!debug['d']) { /* -d suppresses dynamic loader format */
addstring(shstrtab, ".interp");
addstring(shstrtab, ".hash");
addstring(shstrtab, ".got");
addstring(shstrtab, ".got.plt");
addstring(shstrtab, ".dynamic");
addstring(shstrtab, ".dynsym");
addstring(shstrtab, ".dynstr");
if(thechar == '6') {
addstring(shstrtab, ".rela");
addstring(shstrtab, ".rela.plt");
} else {
addstring(shstrtab, ".rel");
addstring(shstrtab, ".rel.plt");
}
addstring(shstrtab, ".plt");
addstring(shstrtab, ".gnu.version");
addstring(shstrtab, ".gnu.version_r");
/* dynamic symbol table - first entry all zeros */
s = lookup(".dynsym", 0);
s->type = SELFROSECT;
s->reachable = 1;
if(thechar == '6')
s->size += ELF64SYMSIZE;
else
s->size += ELF32SYMSIZE;
/* dynamic string table */
s = lookup(".dynstr", 0);
s->type = SELFROSECT;
s->reachable = 1;
if(s->size == 0)
addstring(s, "");
dynstr = s;
/* relocation table */
if(thechar == '6')
s = lookup(".rela", 0);
else
s = lookup(".rel", 0);
s->reachable = 1;
s->type = SELFROSECT;
/* global offset table */
s = lookup(".got", 0);
s->reachable = 1;
s->type = SELFSECT; // writable
/* hash */
s = lookup(".hash", 0);
s->reachable = 1;
s->type = SELFROSECT;
s = lookup(".got.plt", 0);
s->reachable = 1;
s->type = SELFSECT; // writable
s = lookup(".plt", 0);
s->reachable = 1;
s->type = SELFROSECT;
elfsetupplt();
if(thechar == '6')
s = lookup(".rela.plt", 0);
else
s = lookup(".rel.plt", 0);
s->reachable = 1;
s->type = SELFROSECT;
s = lookup(".gnu.version", 0);
s->reachable = 1;
s->type = SELFROSECT;
s = lookup(".gnu.version_r", 0);
s->reachable = 1;
s->type = SELFROSECT;
/* define dynamic elf table */
s = lookup(".dynamic", 0);
s->reachable = 1;
s->type = SELFSECT; // writable
/*
* .dynamic table
*/
elfwritedynentsym(s, DT_HASH, lookup(".hash", 0));
elfwritedynentsym(s, DT_SYMTAB, lookup(".dynsym", 0));
if(thechar == '6')
elfwritedynent(s, DT_SYMENT, ELF64SYMSIZE);
else
elfwritedynent(s, DT_SYMENT, ELF32SYMSIZE);
elfwritedynentsym(s, DT_STRTAB, lookup(".dynstr", 0));
elfwritedynentsymsize(s, DT_STRSZ, lookup(".dynstr", 0));
if(thechar == '6') {
elfwritedynentsym(s, DT_RELA, lookup(".rela", 0));
elfwritedynentsymsize(s, DT_RELASZ, lookup(".rela", 0));
elfwritedynent(s, DT_RELAENT, ELF64RELASIZE);
} else {
elfwritedynentsym(s, DT_REL, lookup(".rel", 0));
elfwritedynentsymsize(s, DT_RELSZ, lookup(".rel", 0));
elfwritedynent(s, DT_RELENT, ELF32RELSIZE);
}
if(rpath)
elfwritedynent(s, DT_RUNPATH, addstring(dynstr, rpath));
elfwritedynentsym(s, DT_PLTGOT, lookup(".got.plt", 0));
if(thechar == '6') {
elfwritedynent(s, DT_PLTREL, DT_RELA);
elfwritedynentsymsize(s, DT_PLTRELSZ, lookup(".rela.plt", 0));
elfwritedynentsym(s, DT_JMPREL, lookup(".rela.plt", 0));
} else {
elfwritedynent(s, DT_PLTREL, DT_REL);
elfwritedynentsymsize(s, DT_PLTRELSZ, lookup(".rel.plt", 0));
elfwritedynentsym(s, DT_JMPREL, lookup(".rel.plt", 0));
}
elfwritedynent(s, DT_DEBUG, 0);
if(flag_shared) {
Sym *init_sym = lookup(LIBINITENTRY, 0);
if(init_sym->type != STEXT)
diag("entry not text: %s", init_sym->name);
elfwritedynentsym(s, DT_INIT, init_sym);
}
// Do not write DT_NULL. elfdynhash will finish it.
}
}
void
doelf(void)
{
LSym *s, *shstrtab, *dynstr;
if(!iself)
return;
/* predefine strings we need for section headers */
shstrtab = linklookup(ctxt, ".shstrtab", 0);
shstrtab->type = SELFROSECT;
shstrtab->reachable = 1;
addstring(shstrtab, "");
addstring(shstrtab, ".text");
addstring(shstrtab, ".noptrdata");
addstring(shstrtab, ".data");
addstring(shstrtab, ".bss");
addstring(shstrtab, ".noptrbss");
// generate .tbss section (except for OpenBSD where it's not supported)
// for dynamic internal linker or external linking, so that various
// binutils could correctly calculate PT_TLS size.
// see http://golang.org/issue/5200.
if(HEADTYPE != Hopenbsd)
if(!debug['d'] || linkmode == LinkExternal)
addstring(shstrtab, ".tbss");
if(HEADTYPE == Hnetbsd)
addstring(shstrtab, ".note.netbsd.ident");
if(HEADTYPE == Hopenbsd)
addstring(shstrtab, ".note.openbsd.ident");
if(buildinfolen > 0)
addstring(shstrtab, ".note.gnu.build-id");
addstring(shstrtab, ".elfdata");
addstring(shstrtab, ".rodata");
addstring(shstrtab, ".typelink");
addstring(shstrtab, ".gosymtab");
addstring(shstrtab, ".gopclntab");
if(linkmode == LinkExternal) {
debug_s = debug['s'];
debug['s'] = 0;
debug['d'] = 1;
if(thechar == '6') {
addstring(shstrtab, ".rela.text");
addstring(shstrtab, ".rela.rodata");
addstring(shstrtab, ".rela.typelink");
addstring(shstrtab, ".rela.gosymtab");
addstring(shstrtab, ".rela.gopclntab");
addstring(shstrtab, ".rela.noptrdata");
addstring(shstrtab, ".rela.data");
} else {
addstring(shstrtab, ".rel.text");
addstring(shstrtab, ".rel.rodata");
addstring(shstrtab, ".rel.typelink");
addstring(shstrtab, ".rel.gosymtab");
addstring(shstrtab, ".rel.gopclntab");
addstring(shstrtab, ".rel.noptrdata");
addstring(shstrtab, ".rel.data");
}
// add a .note.GNU-stack section to mark the stack as non-executable
addstring(shstrtab, ".note.GNU-stack");
}
if(flag_shared) {
addstring(shstrtab, ".init_array");
if(thechar == '6')
addstring(shstrtab, ".rela.init_array");
else
addstring(shstrtab, ".rel.init_array");
}
if(!debug['s']) {
addstring(shstrtab, ".symtab");
addstring(shstrtab, ".strtab");
dwarfaddshstrings(shstrtab);
}
addstring(shstrtab, ".shstrtab");
if(!debug['d']) { /* -d suppresses dynamic loader format */
addstring(shstrtab, ".interp");
addstring(shstrtab, ".hash");
addstring(shstrtab, ".got");
addstring(shstrtab, ".got.plt");
addstring(shstrtab, ".dynamic");
addstring(shstrtab, ".dynsym");
addstring(shstrtab, ".dynstr");
if(thechar == '6') {
addstring(shstrtab, ".rela");
addstring(shstrtab, ".rela.plt");
} else {
addstring(shstrtab, ".rel");
addstring(shstrtab, ".rel.plt");
}
addstring(shstrtab, ".plt");
addstring(shstrtab, ".gnu.version");
addstring(shstrtab, ".gnu.version_r");
/* dynamic symbol table - first entry all zeros */
s = linklookup(ctxt, ".dynsym", 0);
s->type = SELFROSECT;
s->reachable = 1;
if(thechar == '6')
s->size += ELF64SYMSIZE;
else
s->size += ELF32SYMSIZE;
/* dynamic string table */
s = linklookup(ctxt, ".dynstr", 0);
s->type = SELFROSECT;
s->reachable = 1;
if(s->size == 0)
addstring(s, "");
dynstr = s;
/* relocation table */
if(thechar == '6')
s = linklookup(ctxt, ".rela", 0);
else
s = linklookup(ctxt, ".rel", 0);
s->reachable = 1;
s->type = SELFROSECT;
/* global offset table */
s = linklookup(ctxt, ".got", 0);
s->reachable = 1;
s->type = SELFSECT; // writable
/* hash */
s = linklookup(ctxt, ".hash", 0);
s->reachable = 1;
s->type = SELFROSECT;
s = linklookup(ctxt, ".got.plt", 0);
s->reachable = 1;
s->type = SELFSECT; // writable
s = linklookup(ctxt, ".plt", 0);
s->reachable = 1;
s->type = SELFRXSECT;
elfsetupplt();
if(thechar == '6')
s = linklookup(ctxt, ".rela.plt", 0);
else
s = linklookup(ctxt, ".rel.plt", 0);
s->reachable = 1;
s->type = SELFROSECT;
s = linklookup(ctxt, ".gnu.version", 0);
s->reachable = 1;
s->type = SELFROSECT;
s = linklookup(ctxt, ".gnu.version_r", 0);
s->reachable = 1;
s->type = SELFROSECT;
/* define dynamic elf table */
s = linklookup(ctxt, ".dynamic", 0);
s->reachable = 1;
s->type = SELFSECT; // writable
/*
* .dynamic table
*/
elfwritedynentsym(s, DT_HASH, linklookup(ctxt, ".hash", 0));
elfwritedynentsym(s, DT_SYMTAB, linklookup(ctxt, ".dynsym", 0));
if(thechar == '6')
elfwritedynent(s, DT_SYMENT, ELF64SYMSIZE);
else
elfwritedynent(s, DT_SYMENT, ELF32SYMSIZE);
elfwritedynentsym(s, DT_STRTAB, linklookup(ctxt, ".dynstr", 0));
elfwritedynentsymsize(s, DT_STRSZ, linklookup(ctxt, ".dynstr", 0));
if(thechar == '6') {
elfwritedynentsym(s, DT_RELA, linklookup(ctxt, ".rela", 0));
elfwritedynentsymsize(s, DT_RELASZ, linklookup(ctxt, ".rela", 0));
elfwritedynent(s, DT_RELAENT, ELF64RELASIZE);
} else {
elfwritedynentsym(s, DT_REL, linklookup(ctxt, ".rel", 0));
elfwritedynentsymsize(s, DT_RELSZ, linklookup(ctxt, ".rel", 0));
elfwritedynent(s, DT_RELENT, ELF32RELSIZE);
}
if(rpath)
elfwritedynent(s, DT_RUNPATH, addstring(dynstr, rpath));
elfwritedynentsym(s, DT_PLTGOT, linklookup(ctxt, ".got.plt", 0));
// Solaris dynamic linker can't handle an empty .rela.plt if
// DT_JMPREL is emitted so we have to defer generation of DT_PLTREL,
// DT_PLTRELSZ, and DT_JMPREL dynamic entries until after we know the
// size of .rel(a).plt section.
elfwritedynent(s, DT_DEBUG, 0);
// Do not write DT_NULL. elfdynhash will finish it.
}
}
void
doelf(void)
{
Sym *s, *shstrtab, *dynstr;
if(!iself)
return;
/* predefine strings we need for section headers */
shstrtab = lookup(".shstrtab", 0);
shstrtab->type = SELFROSECT;
shstrtab->reachable = 1;
elfstr[ElfStrEmpty] = addstring(shstrtab, "");
elfstr[ElfStrText] = addstring(shstrtab, ".text");
elfstr[ElfStrNoPtrData] = addstring(shstrtab, ".noptrdata");
elfstr[ElfStrData] = addstring(shstrtab, ".data");
elfstr[ElfStrBss] = addstring(shstrtab, ".bss");
elfstr[ElfStrNoPtrBss] = addstring(shstrtab, ".noptrbss");
if(HEADTYPE == Hnetbsd)
elfstr[ElfStrNoteNetbsdIdent] = addstring(shstrtab, ".note.netbsd.ident");
if(HEADTYPE == Hopenbsd)
elfstr[ElfStrNoteOpenbsdIdent] = addstring(shstrtab, ".note.openbsd.ident");
if(buildinfolen > 0)
elfstr[ElfStrNoteBuildInfo] = addstring(shstrtab, ".note.gnu.build-id");
addstring(shstrtab, ".elfdata");
addstring(shstrtab, ".rodata");
addstring(shstrtab, ".typelink");
addstring(shstrtab, ".gcdata");
addstring(shstrtab, ".gcbss");
addstring(shstrtab, ".gosymtab");
addstring(shstrtab, ".gopclntab");
if(!debug['s']) {
elfstr[ElfStrSymtab] = addstring(shstrtab, ".symtab");
elfstr[ElfStrStrtab] = addstring(shstrtab, ".strtab");
dwarfaddshstrings(shstrtab);
}
elfstr[ElfStrShstrtab] = addstring(shstrtab, ".shstrtab");
if(!debug['d']) { /* -d suppresses dynamic loader format */
elfstr[ElfStrInterp] = addstring(shstrtab, ".interp");
elfstr[ElfStrHash] = addstring(shstrtab, ".hash");
elfstr[ElfStrGot] = addstring(shstrtab, ".got");
elfstr[ElfStrGotPlt] = addstring(shstrtab, ".got.plt");
elfstr[ElfStrDynamic] = addstring(shstrtab, ".dynamic");
elfstr[ElfStrDynsym] = addstring(shstrtab, ".dynsym");
elfstr[ElfStrDynstr] = addstring(shstrtab, ".dynstr");
elfstr[ElfStrRel] = addstring(shstrtab, ".rel");
elfstr[ElfStrRelPlt] = addstring(shstrtab, ".rel.plt");
elfstr[ElfStrPlt] = addstring(shstrtab, ".plt");
elfstr[ElfStrGnuVersion] = addstring(shstrtab, ".gnu.version");
elfstr[ElfStrGnuVersionR] = addstring(shstrtab, ".gnu.version_r");
/* dynamic symbol table - first entry all zeros */
s = lookup(".dynsym", 0);
s->type = SELFROSECT;
s->reachable = 1;
s->size += ELF32SYMSIZE;
/* dynamic string table */
s = lookup(".dynstr", 0);
s->reachable = 1;
s->type = SELFROSECT;
if(s->size == 0)
addstring(s, "");
dynstr = s;
/* relocation table */
s = lookup(".rel", 0);
s->reachable = 1;
s->type = SELFROSECT;
/* global offset table */
s = lookup(".got", 0);
s->reachable = 1;
s->type = SELFSECT; // writable
/* hash */
s = lookup(".hash", 0);
s->reachable = 1;
s->type = SELFROSECT;
/* got.plt */
s = lookup(".got.plt", 0);
s->reachable = 1;
s->type = SELFSECT; // writable
s = lookup(".plt", 0);
s->reachable = 1;
s->type = SELFROSECT;
s = lookup(".rel.plt", 0);
s->reachable = 1;
s->type = SELFROSECT;
s = lookup(".gnu.version", 0);
s->reachable = 1;
s->type = SELFROSECT;
s = lookup(".gnu.version_r", 0);
s->reachable = 1;
s->type = SELFROSECT;
elfsetupplt();
/* define dynamic elf table */
s = lookup(".dynamic", 0);
s->reachable = 1;
s->type = SELFSECT; // writable
/*
* .dynamic table
*/
elfwritedynentsym(s, DT_HASH, lookup(".hash", 0));
elfwritedynentsym(s, DT_SYMTAB, lookup(".dynsym", 0));
elfwritedynent(s, DT_SYMENT, ELF32SYMSIZE);
elfwritedynentsym(s, DT_STRTAB, lookup(".dynstr", 0));
elfwritedynentsymsize(s, DT_STRSZ, lookup(".dynstr", 0));
elfwritedynentsym(s, DT_REL, lookup(".rel", 0));
elfwritedynentsymsize(s, DT_RELSZ, lookup(".rel", 0));
elfwritedynent(s, DT_RELENT, ELF32RELSIZE);
if(rpath)
elfwritedynent(s, DT_RUNPATH, addstring(dynstr, rpath));
elfwritedynentsym(s, DT_PLTGOT, lookup(".got.plt", 0));
elfwritedynent(s, DT_PLTREL, DT_REL);
elfwritedynentsymsize(s, DT_PLTRELSZ, lookup(".rel.plt", 0));
elfwritedynentsym(s, DT_JMPREL, lookup(".rel.plt", 0));
elfwritedynent(s, DT_DEBUG, 0);
// Do not write DT_NULL. elfdynhash will finish it.
}
}
void
doelf(void)
{
Sym *s, *shstrtab, *dynstr;
if(!iself)
return;
/* predefine strings we need for section headers */
shstrtab = lookup(".shstrtab", 0);
shstrtab->type = SELFDATA;
shstrtab->reachable = 1;
elfstr[ElfStrEmpty] = addstring(shstrtab, "");
elfstr[ElfStrText] = addstring(shstrtab, ".text");
elfstr[ElfStrData] = addstring(shstrtab, ".data");
elfstr[ElfStrBss] = addstring(shstrtab, ".bss");
addstring(shstrtab, ".elfdata");
addstring(shstrtab, ".rodata");
if(!debug['s']) {
elfstr[ElfStrGosymcounts] = addstring(shstrtab, ".gosymcounts");
elfstr[ElfStrGosymtab] = addstring(shstrtab, ".gosymtab");
elfstr[ElfStrGopclntab] = addstring(shstrtab, ".gopclntab");
dwarfaddshstrings(shstrtab);
}
elfstr[ElfStrShstrtab] = addstring(shstrtab, ".shstrtab");
if(!debug['d']) { /* -d suppresses dynamic loader format */
elfstr[ElfStrInterp] = addstring(shstrtab, ".interp");
elfstr[ElfStrHash] = addstring(shstrtab, ".hash");
elfstr[ElfStrGot] = addstring(shstrtab, ".got");
elfstr[ElfStrGotPlt] = addstring(shstrtab, ".got.plt");
elfstr[ElfStrDynamic] = addstring(shstrtab, ".dynamic");
elfstr[ElfStrDynsym] = addstring(shstrtab, ".dynsym");
elfstr[ElfStrDynstr] = addstring(shstrtab, ".dynstr");
elfstr[ElfStrRel] = addstring(shstrtab, ".rel");
elfstr[ElfStrRelPlt] = addstring(shstrtab, ".rel.plt");
elfstr[ElfStrPlt] = addstring(shstrtab, ".plt");
/* interpreter string */
s = lookup(".interp", 0);
s->reachable = 1;
s->type = SELFDATA;
/* dynamic symbol table - first entry all zeros */
s = lookup(".dynsym", 0);
s->type = SELFDATA;
s->reachable = 1;
s->size += ELF32SYMSIZE;
/* dynamic string table */
s = lookup(".dynstr", 0);
s->reachable = 1;
s->type = SELFDATA;
if(s->size == 0)
addstring(s, "");
dynstr = s;
/* relocation table */
s = lookup(".rel", 0);
s->reachable = 1;
s->type = SELFDATA;
/* global offset table */
s = lookup(".got", 0);
s->reachable = 1;
s->type = SDATA; // writable, so not SELFDATA
/* hash */
s = lookup(".hash", 0);
s->reachable = 1;
s->type = SELFDATA;
/* got.plt */
s = lookup(".got.plt", 0);
s->reachable = 1;
s->type = SDATA; // writable, so not SELFDATA
s = lookup(".plt", 0);
s->reachable = 1;
s->type = SELFDATA;
s = lookup(".rel.plt", 0);
s->reachable = 1;
s->type = SELFDATA;
elfsetupplt();
/* define dynamic elf table */
s = lookup(".dynamic", 0);
s->reachable = 1;
s->type = SELFDATA;
/*
* .dynamic table
*/
elfwritedynentsym(s, DT_HASH, lookup(".hash", 0));
elfwritedynentsym(s, DT_SYMTAB, lookup(".dynsym", 0));
elfwritedynent(s, DT_SYMENT, ELF32SYMSIZE);
elfwritedynentsym(s, DT_STRTAB, lookup(".dynstr", 0));
elfwritedynentsymsize(s, DT_STRSZ, lookup(".dynstr", 0));
elfwritedynentsym(s, DT_REL, lookup(".rel", 0));
elfwritedynentsymsize(s, DT_RELSZ, lookup(".rel", 0));
elfwritedynent(s, DT_RELENT, ELF32RELSIZE);
if(rpath)
elfwritedynent(s, DT_RUNPATH, addstring(dynstr, rpath));
elfwritedynentsym(s, DT_PLTGOT, lookup(".got.plt", 0));
elfwritedynent(s, DT_PLTREL, DT_REL);
elfwritedynentsymsize(s, DT_PLTRELSZ, lookup(".rel.plt", 0));
elfwritedynentsym(s, DT_JMPREL, lookup(".rel.plt", 0));
elfwritedynent(s, DT_NULL, 0);
}
}
