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Add handlers for TLS-related relocation entries

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This commit is contained in:
Oleksandr Tymoshenko 2012-02-11 00:54:57 +00:00
parent bab893586b
commit b098345b9e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=231491
2 changed files with 87 additions and 3 deletions
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87
libexec/rtld-elf/mips/reloc.c
View File

@ -446,6 +446,89 @@ reloc_non_plt(Obj_Entry *obj, Obj_Entry *obj_rtld, RtldLockState *lockstate)
break;
}
#ifdef __mips_n64
case R_TYPE(TLS_DTPMOD64):
#else
case R_TYPE(TLS_DTPMOD32):
#endif
{
const size_t rlen = sizeof(Elf_Addr);
Elf_Addr old = load_ptr(where, rlen);
Elf_Addr val = old;
def = find_symdef(r_symndx, obj, &defobj, false, NULL,
lockstate);
if (def == NULL)
return -1;
val += (Elf_Addr)defobj->tlsindex;
store_ptr(where, val, rlen);
dbg("DTPMOD %s in %s %p --> %p in %s",
obj->strtab + obj->symtab[r_symndx].st_name,
obj->path, (void *)old, (void*)val, defobj->path);
break;
}
#ifdef __mips_n64
case R_TYPE(TLS_DTPREL64):
#else
case R_TYPE(TLS_DTPREL32):
#endif
{
const size_t rlen = sizeof(Elf_Addr);
Elf_Addr old = load_ptr(where, rlen);
Elf_Addr val = old;
def = find_symdef(r_symndx, obj, &defobj, false, NULL,
lockstate);
if (def == NULL)
return -1;
if (!defobj->tls_done && allocate_tls_offset(obj))
return -1;
val += (Elf_Addr)def->st_value - TLS_DTP_OFFSET;
store_ptr(where, val, rlen);
dbg("DTPREL %s in %s %p --> %p in %s",
obj->strtab + obj->symtab[r_symndx].st_name,
obj->path, (void*)old, (void *)val, defobj->path);
break;
}
#ifdef __mips_n64
case R_TYPE(TLS_TPREL64):
#else
case R_TYPE(TLS_TPREL32):
#endif
{
const size_t rlen = sizeof(Elf_Addr);
Elf_Addr old = load_ptr(where, rlen);
Elf_Addr val = old;
def = find_symdef(r_symndx, obj, &defobj, false, NULL,
lockstate);
if (def == NULL)
return -1;
if (!defobj->tls_done && allocate_tls_offset(obj))
return -1;
val += (Elf_Addr)(def->st_value + defobj->tlsoffset
- TLS_TP_OFFSET - TLS_TCB_SIZE);
store_ptr(where, val, rlen);
dbg("TPREL %s in %s %p --> %p in %s",
obj->strtab + obj->symtab[r_symndx].st_name,
obj->path, (void*)old, (void *)val, defobj->path);
break;
}
default:
dbg("sym = %lu, type = %lu, offset = %p, "
"contents = %p, symbol = %s",
@ -554,7 +637,7 @@ __tls_get_addr(tls_index* ti)
sysarch(MIPS_GET_TLS, &tls);
p = tls_get_addr_common((Elf_Addr**)((Elf_Addr)tls - TLS_TP_OFFSET
- TLS_TCB_SIZE), ti->ti_module, ti->ti_offset);
- TLS_TCB_SIZE), ti->ti_module, ti->ti_offset + TLS_DTP_OFFSET);
return (p + TLS_DTV_OFFSET);
return (p);
}

3
libexec/rtld-elf/mips/rtld_machdep.h
View File

@ -53,7 +53,8 @@ Elf_Addr reloc_jmpslot(Elf_Addr *where, Elf_Addr target,
*/
#define TLS_TP_OFFSET 0x7000
#define TLS_DTV_OFFSET 0x8000
#define TLS_DTP_OFFSET 0x8000
#ifdef __mips_n64
#define TLS_TCB_SIZE 16
#else