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cmd/ld: emit .tbss section when doing dynamic internal linking

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Fixes #5200.

R=iant, dave
CC=golang-dev
https://golang.org/cl/9383043
This commit is contained in:
Shenghou Ma 2013-05-18 02:41:49 +08:00
parent fad27ec5d4
commit a848475324
1 changed files with 16 additions and 1 deletions
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17
src/cmd/ld/elf.c
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@ -887,7 +887,12 @@ doelf(void)
addstring(shstrtab, ".data"); addstring(shstrtab, ".data");
addstring(shstrtab, ".bss"); addstring(shstrtab, ".bss");
addstring(shstrtab, ".noptrbss"); addstring(shstrtab, ".noptrbss");
if(linkmode == LinkExternal && HEADTYPE != Hopenbsd) // 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"); addstring(shstrtab, ".tbss");
if(HEADTYPE == Hnetbsd) if(HEADTYPE == Hnetbsd)
addstring(shstrtab, ".note.netbsd.ident"); addstring(shstrtab, ".note.netbsd.ident");
@ -1412,6 +1417,16 @@ elfobj:
sh->flags = 0; sh->flags = 0;
} }
// generate .tbss section for dynamic internal linking (except for OpenBSD)
// external linking generates .tbss in data.c
if(linkmode == LinkInternal && !debug['d'] && HEADTYPE != Hopenbsd) {
sh = elfshname(".tbss");
sh->type = SHT_NOBITS;
sh->addralign = PtrSize;
sh->size = -tlsoffset;
sh->flags = SHF_ALLOC | SHF_TLS | SHF_WRITE;
}
if(!debug['s']) { if(!debug['s']) {
sh = elfshname(".symtab"); sh = elfshname(".symtab");
sh->type = SHT_SYMTAB; sh->type = SHT_SYMTAB;