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| author | Alan Modra <amodra@gmail.com> | 2015-03-11 17:45:37 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2015-03-11 18:04:25 +1030 |
| commit | 1079403cc002be65ea1c318160efc18c19965389 (patch) | |
| tree | 811088ed8c42f3baee7a8fb18ef643222d8867a5 /bfd/elf32-ppc.c | |
| parent | 50a0d119891f6128b10e8e95074349cc3cfe2070 (diff) | |
| download | gdb-1079403cc002be65ea1c318160efc18c19965389.zip gdb-1079403cc002be65ea1c318160efc18c19965389.tar.gz gdb-1079403cc002be65ea1c318160efc18c19965389.tar.bz2 | |
Fix ppc32 synthetic symbols when __tls_get_addr_opt stub is generated
Also update the 32-bit tls testcases to be secure plt.
bfd/
* elf32-ppc.c (ppc_elf_get_synthetic_symtab): Examine stubs in
reverse order. Account for larger size of __tls_get_addr_opt stub.
ld/testsuite/
* ld-powerpc/tls32.s: Add GOT pointer setup.
* ld-powerpc/tls32.d: Update.
* ld-powerpc/tls32.g: Update.
* ld-powerpc/tls32.t: Update.
* ld-powerpc/tlsexe.d: Update.
* ld-powerpc/tlsexe32.d: Update.
* ld-powerpc/tlsexe32.g: Update.
* ld-powerpc/tlsexe32.r: Update.
* ld-powerpc/tlsexetoc.d: Update.
* ld-powerpc/tlsso32.d: Update.
* ld-powerpc/tlsso32.g: Update.
* ld-powerpc/tlsso32.r: Update.
Diffstat (limited to 'bfd/elf32-ppc.c')
| -rw-r--r-- | bfd/elf32-ppc.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/bfd/elf32-ppc.c b/bfd/elf32-ppc.c index cc16b0d..d61d75e 100644 --- a/bfd/elf32-ppc.c +++ b/bfd/elf32-ppc.c @@ -2925,7 +2925,6 @@ ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms, } count = relplt->size / sizeof (Elf32_External_Rela); - stub_vma = glink_vma - (bfd_vma) count * 16; /* If the stubs are those for -shared/-pie then we might have multiple stubs for each plt entry. If that is the case then there is no way to associate stubs with their plt entries short @@ -2956,9 +2955,10 @@ ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms, if (s == NULL) return -1; + stub_vma = glink_vma; names = (char *) (s + count + 1 + (resolv_vma != 0)); - p = relplt->relocation; - for (i = 0; i < count; i++, p++) + p = relplt->relocation + count - 1; + for (i = 0; i < count; i++) { size_t len; @@ -2969,6 +2969,9 @@ ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms, s->flags |= BSF_GLOBAL; s->flags |= BSF_SYNTHETIC; s->section = glink; + stub_vma -= 16; + if (strcmp ((*p->sym_ptr_ptr)->name, "__tls_get_addr_opt") == 0) + stub_vma -= 32; s->value = stub_vma - glink->vma; s->name = names; s->udata.p = NULL; @@ -2985,7 +2988,7 @@ ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms, memcpy (names, "@plt", sizeof ("@plt")); names += sizeof ("@plt"); ++s; - stub_vma += 16; + --p; } /* Add a symbol at the start of the glink branch table. */ |