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hppa: don't call ifunc functions in trace mode

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This commit is contained in:
Andreas Schwab 2011-10-05 11:52:45 +02:00
parent 86a90a837c
commit 09272d2c9f
2 changed files with 131 additions and 124 deletions
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5
ChangeLog.hppa
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@ -1,3 +1,8 @@
2011-10-05 Andreas Schwab <schwab@redhat.com>
* sysdeps/hppa/dl-machine.h (elf_machine_rela)
(elf_machine_lazy_rel): Add parameter skip_ifunc.
2010-06-24 Carlos O'Donell <carlos@codesourcery.com>
* sysdeps/unix/sysv/linux/hppa/nptl/pt-vfork.S: Only create stack

170
sysdeps/hppa/dl-machine.h
View File

@ -1,5 +1,5 @@
/* Machine-dependent ELF dynamic relocation inline functions. PA-RISC version.
Copyright (C) 1995-1997,1999-2003
Copyright (C) 1995-1997,1999-2003,2011
Free Software Foundation, Inc.
Contributed by David Huggins-Daines <dhd@debian.org>
This file is part of the GNU C Library.
@ -166,87 +166,87 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
if (lazy)
{
/* FIXME: Search for the got, but backwards through the relocs, technically we should
find it on the first try. However, assuming the relocs got out of order the
routine is made a bit more robust by searching them all in case of failure. */
find it on the first try. However, assuming the relocs got out of order the
routine is made a bit more robust by searching them all in case of failure. */
for (iplt = (end_jmprel - sizeof(Elf32_Rela)); iplt >= jmprel; iplt -= sizeof (Elf32_Rela))
{
{
reloc = (const Elf32_Rela *) iplt;
r_type = ELF32_R_TYPE (reloc->r_info);
r_sym = ELF32_R_SYM (reloc->r_info);
r_type = ELF32_R_TYPE (reloc->r_info);
r_sym = ELF32_R_SYM (reloc->r_info);
got = (Elf32_Addr *) (reloc->r_offset + l_addr + PLT_ENTRY_SIZE + SIZEOF_PLT_STUB);
got = (Elf32_Addr *) (reloc->r_offset + l_addr + PLT_ENTRY_SIZE + SIZEOF_PLT_STUB);
/* If we aren't an IPLT, and we aren't NONE then it's a bad reloc */
if (__builtin_expect (r_type != R_PARISC_IPLT, 0))
/* If we aren't an IPLT, and we aren't NONE then it's a bad reloc */
if (__builtin_expect (r_type != R_PARISC_IPLT, 0))
{
if (__builtin_expect (r_type != R_PARISC_NONE, 0))
_dl_reloc_bad_type (l, r_type, 1);
_dl_reloc_bad_type (l, r_type, 1);
continue;
}
/* Check for the plt_stub that binutils placed here for us
to use with _dl_runtime_resolve */
if (got[-2] != sig.i[0] || got[-1] != sig.i[1])
{
got = NULL; /* Not the stub... keep looking */
}
else
/* Check for the plt_stub that binutils placed here for us
to use with _dl_runtime_resolve */
if (got[-2] != sig.i[0] || got[-1] != sig.i[1])
{
/* Found the GOT! */
register Elf32_Addr ltp __asm__ ("%r19");
got = NULL; /* Not the stub... keep looking */
}
else
{
/* Found the GOT! */
register Elf32_Addr ltp __asm__ ("%r19");
/* Identify this shared object. Second entry in the got. */
got[1] = (Elf32_Addr) l;
/* Identify this shared object. Second entry in the got. */
got[1] = (Elf32_Addr) l;
/* This function will be called to perform the relocation. */
if (__builtin_expect (!profile, 1))
{
/* If a static application called us, then _dl_runtime_resolve is not
/* This function will be called to perform the relocation. */
if (__builtin_expect (!profile, 1))
{
/* If a static application called us, then _dl_runtime_resolve is not
a function descriptor, but the *real* address of the function... */
if((unsigned long) &_dl_runtime_resolve & 3)
{
got[-2] = (Elf32_Addr) ((struct fdesc *)
((unsigned long) &_dl_runtime_resolve & ~3))->ip;
got[-2] = (Elf32_Addr) ((struct fdesc *)
((unsigned long) &_dl_runtime_resolve & ~3))->ip;
}
else
{
/* Static executable! */
got[-2] = (Elf32_Addr) &_dl_runtime_resolve;
got[-2] = (Elf32_Addr) &_dl_runtime_resolve;
}
}
else
{
if (GLRO(dl_profile) != NULL
}
else
{
if (GLRO(dl_profile) != NULL
&& _dl_name_match_p (GLRO(dl_profile), l))
{
{
/* This is the object we are looking for. Say that
we really want profiling and the timers are
started. */
GL(dl_profile_map) = l;
}
we really want profiling and the timers are
started. */
GL(dl_profile_map) = l;
}
if((unsigned long) &_dl_runtime_profile & 3)
{
got[-2] = (Elf32_Addr) ((struct fdesc *)
((unsigned long) &_dl_runtime_profile & ~3))->ip;
got[-2] = (Elf32_Addr) ((struct fdesc *)
((unsigned long) &_dl_runtime_profile & ~3))->ip;
}
else
{
/* Static executable */
got[-2] = (Elf32_Addr) &_dl_runtime_profile;
got[-2] = (Elf32_Addr) &_dl_runtime_profile;
}
}
/* Plunk in the gp of this function descriptor so we
can make the call to _dl_runtime_xxxxxx */
got[-1] = ltp;
break;
/* Done looking for the GOT, and stub is setup */
} /* else we found the GOT */
} /* for, walk the relocs backwards */
}
/* Plunk in the gp of this function descriptor so we
can make the call to _dl_runtime_xxxxxx */
got[-1] = ltp;
break;
/* Done looking for the GOT, and stub is setup */
} /* else we found the GOT */
} /* for, walk the relocs backwards */
if(!got)
return 0; /* No lazy linking for you! */
return 0; /* No lazy linking for you! */
/* Process all the relocs, now that we know the GOT... */
for (iplt = jmprel; iplt < end_jmprel; iplt += sizeof (Elf32_Rela))
@ -281,19 +281,19 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
else
{
for (iplt = jmprel; iplt < end_jmprel; iplt += sizeof (Elf32_Rela))
{
reloc = (const Elf32_Rela *) iplt;
r_type = ELF32_R_TYPE (reloc->r_info);
r_sym = ELF32_R_SYM (reloc->r_info);
{
reloc = (const Elf32_Rela *) iplt;
r_type = ELF32_R_TYPE (reloc->r_info);
r_sym = ELF32_R_SYM (reloc->r_info);
if (__builtin_expect ((r_type == R_PARISC_IPLT) && (r_sym == 0), 1))
{
fptr = (struct fdesc *) (reloc->r_offset + l_addr);
/* Relocate this *ABS* entry, set only the gp, the rest is set later
when elf_machine_rela_relative is called (WITHOUT the linkmap) */
fptr->gp = D_PTR (l, l_info[DT_PLTGOT]);
} /* r_type == R_PARISC_IPLT */
} /* for all the relocations */
if (__builtin_expect ((r_type == R_PARISC_IPLT) && (r_sym == 0), 1))
{
fptr = (struct fdesc *) (reloc->r_offset + l_addr);
/* Relocate this *ABS* entry, set only the gp, the rest is set later
when elf_machine_rela_relative is called (WITHOUT the linkmap) */
fptr->gp = D_PTR (l, l_info[DT_PLTGOT]);
} /* r_type == R_PARISC_IPLT */
} /* for all the relocations */
}
return lazy;
}
@ -441,7 +441,7 @@ asm ( \
" ldw -44(%sp),%r24\n" \
\
/* _dl_fini is a local function in the loader, so we construct \
a false OPD here and pass this to the application. */ \
a false OPD here and pass this to the application. */ \
/* FIXME: Should be able to use P%, and LR RR to have the \
the linker construct a proper OPD. */ \
" .section .data\n" \
@ -527,7 +527,8 @@ elf_machine_rela (struct link_map *map,
const Elf32_Rela *reloc,
const Elf32_Sym *sym,
const struct r_found_version *version,
void *const reloc_addr_arg)
void *const reloc_addr_arg,
int skip_ifunc)
{
Elf32_Addr *const reloc_addr = reloc_addr_arg;
const Elf32_Sym *const refsym = sym;
@ -584,7 +585,7 @@ elf_machine_rela (struct link_map *map,
case R_PARISC_DIR21L:
{
unsigned int insn = *(unsigned int *)reloc_addr;
value = sym_map->l_addr + sym->st_value
value = sym_map->l_addr + sym->st_value
+ ((reloc->r_addend + 0x1000) & -0x2000);
value = value >> 11;
insn = (insn &~ 0x1fffff) | reassemble_21 (value);
@ -604,17 +605,17 @@ elf_machine_rela (struct link_map *map,
case R_PARISC_PLABEL32:
/* Easy rule: If there is a symbol and it is global, then we
need to make a dynamic function descriptor. Otherwise we
have the address of a PLT slot for a local symbol which we
know to be unique. */
need to make a dynamic function descriptor. Otherwise we
have the address of a PLT slot for a local symbol which we
know to be unique. */
if (sym == NULL
|| sym_map == NULL
|| ELF32_ST_BIND (sym->st_info) == STB_LOCAL)
{
{
break;
}
}
/* Set bit 30 to indicate to $$dyncall that this is a PLABEL.
We have to do this outside of the generic function descriptor
We have to do this outside of the generic function descriptor
code, since it doesn't know about our requirement for setting
protection bits */
value = (Elf32_Addr)((unsigned int)_dl_make_fptr (sym_map, sym, value) | 2);
@ -625,17 +626,17 @@ elf_machine_rela (struct link_map *map,
{
unsigned int insn = *(unsigned int *)reloc_addr;
if (__builtin_expect (sym == NULL, 0))
break;
if (__builtin_expect (sym == NULL, 0))
break;
value = (Elf32_Addr)((unsigned int)_dl_make_fptr (sym_map, sym, value) | 2);
value = (Elf32_Addr)((unsigned int)_dl_make_fptr (sym_map, sym, value) | 2);
if (r_type == R_PARISC_PLABEL21L)
if (r_type == R_PARISC_PLABEL21L)
{
value >>= 11;
insn = (insn &~ 0x1fffff) | reassemble_21 (value);
}
else
else
{
value &= 0x7ff;
insn = (insn &~ 0x3fff) | reassemble_14 (value);
@ -647,16 +648,16 @@ elf_machine_rela (struct link_map *map,
case R_PARISC_IPLT:
if (__builtin_expect (sym_map != NULL, 1))
{
{
elf_machine_fixup_plt (NULL, sym_map, reloc, reloc_addr,
DL_FIXUP_MAKE_VALUE(sym_map, value));
}
}
else
{
{
/* If we get here, it's a (weak) undefined sym. */
elf_machine_fixup_plt (NULL, map, reloc, reloc_addr,
DL_FIXUP_MAKE_VALUE(map, value));
}
}
return;
case R_PARISC_COPY:
@ -687,16 +688,16 @@ elf_machine_rela (struct link_map *map,
case R_PARISC_TLS_DTPOFF32:
/* During relocation all TLS symbols are defined and used.
Therefore the offset is already correct. */
Therefore the offset is already correct. */
if (sym != NULL)
*reloc_addr = sym->st_value;
*reloc_addr = sym->st_value;
return;
case R_PARISC_TLS_TPREL32:
/* The offset is negative, forward from the thread pointer */
if (sym != NULL)
{
CHECK_STATIC_TLS (map, sym_map);
{
CHECK_STATIC_TLS (map, sym_map);
value = sym_map->l_tls_offset + sym->st_value + reloc->r_addend;
}
break;
@ -769,7 +770,8 @@ elf_machine_rela_relative (Elf32_Addr l_addr,
auto void __attribute__((always_inline))
elf_machine_lazy_rel (struct link_map *map,
Elf32_Addr l_addr, const Elf32_Rela *reloc)
Elf32_Addr l_addr, const Elf32_Rela *reloc,
int skip_ifunc)
{
/* We don't have anything to do here. elf_machine_runtime_setup has
done all the relocs already. */