diff options
| author | Alan Modra <amodra@gmail.com> | 2015-01-29 19:38:28 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2015-02-09 14:06:27 +1030 |
| commit | 989f98793c06132bb5cdc2f7807b7eee5108342f (patch) | |
| tree | 55837e1e0a367fa4492dcde295e84c9ed2465cef /bfd/elf32-ppc.c | |
| parent | ca4be51cd81b0bfff2ada60c98e7c67c936045b7 (diff) | |
| download | gdb-989f98793c06132bb5cdc2f7807b7eee5108342f.zip gdb-989f98793c06132bb5cdc2f7807b7eee5108342f.tar.gz gdb-989f98793c06132bb5cdc2f7807b7eee5108342f.tar.bz2 | |
Don't segfault or assert on NULL tls_sec
Real code won't hit these, but it's possible to contrive a testcase..
* elf32-ppc.c (ppc_elf_relocate_section): Don't segfault on NULL
tls_sec.
* elf64-ppc.c (ppc64_elf_relocate_section): Likewise.
* elflink.c (elf_link_output_extsym): Don't assert on NULL tls_sec.
Diffstat (limited to 'bfd/elf32-ppc.c')
| -rw-r--r-- | bfd/elf32-ppc.c | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/bfd/elf32-ppc.c b/bfd/elf32-ppc.c index 640ced9..8d8167a 100644 --- a/bfd/elf32-ppc.c +++ b/bfd/elf32-ppc.c @@ -8221,7 +8221,12 @@ ppc_elf_relocate_section (bfd *output_bfd, { outrel.r_addend += relocation; if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL)) - outrel.r_addend -= htab->elf.tls_sec->vma; + { + if (htab->elf.tls_sec == NULL) + outrel.r_addend = 0; + else + outrel.r_addend -= htab->elf.tls_sec->vma; + } } loc = rsec->contents; loc += (rsec->reloc_count++ @@ -8239,9 +8244,14 @@ ppc_elf_relocate_section (bfd *output_bfd, value = 1; else if (tls_ty != 0) { - value -= htab->elf.tls_sec->vma + DTP_OFFSET; - if (tls_ty == (TLS_TLS | TLS_TPREL)) - value += DTP_OFFSET - TP_OFFSET; + if (htab->elf.tls_sec == NULL) + value = 0; + else + { + value -= htab->elf.tls_sec->vma + DTP_OFFSET; + if (tls_ty == (TLS_TLS | TLS_TPREL)) + value += DTP_OFFSET - TP_OFFSET; + } if (tls_ty == (TLS_TLS | TLS_GD)) { @@ -8327,7 +8337,8 @@ ppc_elf_relocate_section (bfd *output_bfd, case R_PPC_DTPREL16_LO: case R_PPC_DTPREL16_HI: case R_PPC_DTPREL16_HA: - addend -= htab->elf.tls_sec->vma + DTP_OFFSET; + if (htab->elf.tls_sec != NULL) + addend -= htab->elf.tls_sec->vma + DTP_OFFSET; break; /* Relocations that may need to be propagated if this is a shared @@ -8351,18 +8362,21 @@ ppc_elf_relocate_section (bfd *output_bfd, bfd_put_32 (output_bfd, insn, p); break; } - addend -= htab->elf.tls_sec->vma + TP_OFFSET; + if (htab->elf.tls_sec != NULL) + addend -= htab->elf.tls_sec->vma + TP_OFFSET; /* The TPREL16 relocs shouldn't really be used in shared libs as they will result in DT_TEXTREL being set, but support them anyway. */ goto dodyn; case R_PPC_TPREL32: - addend -= htab->elf.tls_sec->vma + TP_OFFSET; + if (htab->elf.tls_sec != NULL) + addend -= htab->elf.tls_sec->vma + TP_OFFSET; goto dodyn; case R_PPC_DTPREL32: - addend -= htab->elf.tls_sec->vma + DTP_OFFSET; + if (htab->elf.tls_sec != NULL) + addend -= htab->elf.tls_sec->vma + DTP_OFFSET; goto dodyn; case R_PPC_DTPMOD32: |