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Add support for the R_IA64_IPLTLSB relocation in non-PLT context.

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This relocation creates a function descriptor at the specified
address and is commonly used for C++ to create virtual function
tables.
This commit is contained in:
Marcel Moolenaar 2002-08-20 00:24:33 +00:00
parent 4642178fcc
commit ecfdc2e0cd
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=102155
1 changed files with 30 additions and 0 deletions
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30
libexec/rtld-elf/ia64/reloc.c
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@ -170,6 +170,36 @@ reloc_non_plt_obj(Obj_Entry *obj_rtld, Obj_Entry *obj, const Elf_Rela *rela,
break;
}
case R_IA64_IPLTLSB: {
/*
* Relocation typically used to populate C++ virtual function
* tables. It creates a 128-bit function descriptor at the
* specified memory address.
*/
const Elf_Sym *def;
const Obj_Entry *defobj;
struct fptr *fptr;
Elf_Addr target, gp;
def = find_symdef(ELF_R_SYM(rela->r_info), obj, &defobj,
false, cache);
if (def == NULL)
return -1;
if (def->st_shndx != SHN_UNDEF) {
target = (Elf_Addr)(defobj->relocbase + def->st_value);
gp = (Elf_Addr)defobj->pltgot;
} else {
target = 0;
gp = 0;
}
fptr = (void*)where;
store64(&fptr->target, target);
store64(&fptr->gp, gp);
break;
}
default:
_rtld_error("%s: Unsupported relocation type %d"
" in non-PLT relocations\n", obj->path,