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ELFv2 stub, plt and glink changes
An ELFv2 PLT entry is simply the address of the target function rather than three (or two) words to specify entry, toc and static chain. PLT call stubs are correspondingly simpler and need no thread safety barrier. The glink resolver stub and branch table also is simplified, a change that could be applied to ELFv1 too, but isn't as yet. * elf64-ppc.c (PLT_ENTRY_SIZE, PLT_INITIAL_ENTRY_SIZE): Add htab parameter and adjust for ELFv2. Update all uses. (PLT_CALL_STUB_SIZE): Delete. (ppc64_elf_get_synthetic_symtab): Support new glink layout. (allocate_dynrelocs): Likewise. (plt_stub_size, build_plt_stub): Adjust for ELFv2. (get_r2off): Return 0 for ELFv2 -R. (ppc_build_one_stub, ppc_size_one_stub): Adjust for ELFv2. (ppc64_elf_size_stubs): Likewise. (ppc64_elf_build_stubs): Add new ELFv2 glink.
This commit is contained in:
Alan Modra
parent
6911b7dcb8
commit
b9e5796b0d
@ -1,3 +1,16 @@
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2013-10-30 Alan Modra <amodra@gmail.com>
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* elf64-ppc.c (PLT_ENTRY_SIZE, PLT_INITIAL_ENTRY_SIZE): Add htab
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parameter and adjust for ELFv2. Update all uses.
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(PLT_CALL_STUB_SIZE): Delete.
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(ppc64_elf_get_synthetic_symtab): Support new glink layout.
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(allocate_dynrelocs): Likewise.
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(plt_stub_size, build_plt_stub): Adjust for ELFv2.
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(get_r2off): Return 0 for ELFv2 -R.
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(ppc_build_one_stub, ppc_size_one_stub): Adjust for ELFv2.
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(ppc64_elf_size_stubs): Likewise.
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(ppc64_elf_build_stubs): Add new ELFv2 glink.
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2013-10-30 Alan Modra <amodra@gmail.com>
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Ulrich Weigand <uweigand@de.ibm.com>
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324
bfd/elf64-ppc.c
324
bfd/elf64-ppc.c
@ -125,10 +125,10 @@ static bfd_vma opd_entry_value
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#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
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/* The size in bytes of an entry in the procedure linkage table. */
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#define PLT_ENTRY_SIZE 24
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#define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8)
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/* The initial size of the plt reserved for the dynamic linker. */
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#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
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#define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16)
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/* TOC base pointers offset from start of TOC. */
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#define TOC_BASE_OFF 0x8000
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@ -140,7 +140,6 @@ static bfd_vma opd_entry_value
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/* .plt call stub instructions. The normal stub is like this, but
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sometimes the .plt entry crosses a 64k boundary and we need to
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insert an addi to adjust r11. */
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#define PLT_CALL_STUB_SIZE (7*4)
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#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
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#define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */
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#define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */
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@ -184,6 +183,11 @@ static bfd_vma opd_entry_value
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/* mtctr %12 */
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/* ld %11,16(%11) */
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/* bctr */
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#define MFLR_R0 0x7c0802a6 /* mflr %r0 */
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#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
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#define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */
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#define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */
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#define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */
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/* Pad with this. */
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#define NOP 0x60000000
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@ -3345,9 +3349,9 @@ ppc64_elf_get_synthetic_symtab (bfd *abfd,
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if (dyn.d_tag == DT_PPC64_GLINK)
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{
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/* The first glink stub starts at offset 32; see comment in
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ppc64_elf_finish_dynamic_sections. */
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glink_vma = dyn.d_un.d_val + 32;
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/* The first glink stub starts at offset 32; see
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comment in ppc64_elf_finish_dynamic_sections. */
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glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4;
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/* The .glink section usually does not survive the final
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link; search for the section (usually .text) where the
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glink stubs now reside. */
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@ -3365,13 +3369,21 @@ ppc64_elf_get_synthetic_symtab (bfd *abfd,
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/* Determine __glink trampoline by reading the relative branch
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from the first glink stub. */
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bfd_byte buf[4];
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if (bfd_get_section_contents (abfd, glink, buf,
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glink_vma + 4 - glink->vma, 4))
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unsigned int off = 0;
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while (bfd_get_section_contents (abfd, glink, buf,
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glink_vma + off - glink->vma, 4))
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{
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unsigned int insn = bfd_get_32 (abfd, buf);
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insn ^= B_DOT;
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if ((insn & ~0x3fffffc) == 0)
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resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
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{
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resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000;
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break;
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}
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off += 4;
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if (off > 4)
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break;
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}
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if (resolv_vma)
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@ -3524,8 +3536,13 @@ ppc64_elf_get_synthetic_symtab (bfd *abfd,
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memcpy (names, "@plt", sizeof ("@plt"));
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names += sizeof ("@plt");
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s++;
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glink_vma += 8;
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if (i >= 0x8000)
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if (abi < 2)
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{
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glink_vma += 8;
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if (i >= 0x8000)
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glink_vma += 4;
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}
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else
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glink_vma += 4;
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}
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count += plt_count;
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@ -9227,7 +9244,7 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
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{
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s = htab->iplt;
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pent->plt.offset = s->size;
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s->size += PLT_ENTRY_SIZE;
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s->size += PLT_ENTRY_SIZE (htab);
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s = htab->reliplt;
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}
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else
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@ -9236,21 +9253,26 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
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first entry. */
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s = htab->plt;
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if (s->size == 0)
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s->size += PLT_INITIAL_ENTRY_SIZE;
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s->size += PLT_INITIAL_ENTRY_SIZE (htab);
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pent->plt.offset = s->size;
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/* Make room for this entry. */
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s->size += PLT_ENTRY_SIZE;
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s->size += PLT_ENTRY_SIZE (htab);
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/* Make room for the .glink code. */
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s = htab->glink;
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if (s->size == 0)
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s->size += GLINK_CALL_STUB_SIZE;
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/* We need bigger stubs past index 32767. */
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if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
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if (htab->opd_abi)
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{
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/* We need bigger stubs past index 32767. */
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if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
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s->size += 4;
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s->size += 2*4;
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}
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else
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s->size += 4;
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s->size += 2*4;
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/* We also need to make an entry in the .rela.plt section. */
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s = htab->relplt;
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@ -9603,7 +9625,7 @@ ppc64_elf_size_dynamic_sections (bfd *output_bfd,
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{
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s = htab->iplt;
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ent->plt.offset = s->size;
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s->size += PLT_ENTRY_SIZE;
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s->size += PLT_ENTRY_SIZE (htab);
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htab->reliplt->size += sizeof (Elf64_External_Rela);
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}
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@ -9937,19 +9959,23 @@ plt_stub_size (struct ppc_link_hash_table *htab,
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struct ppc_stub_hash_entry *stub_entry,
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bfd_vma off)
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{
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unsigned size = PLT_CALL_STUB_SIZE;
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unsigned size = 12;
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if (!(ALWAYS_EMIT_R2SAVE
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|| stub_entry->stub_type == ppc_stub_plt_call_r2save))
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size -= 4;
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if (!htab->plt_static_chain)
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size -= 4;
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if (htab->plt_thread_safe)
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size += 8;
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if (PPC_HA (off) == 0)
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size -= 4;
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if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
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if (ALWAYS_EMIT_R2SAVE
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|| stub_entry->stub_type == ppc_stub_plt_call_r2save)
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size += 4;
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if (PPC_HA (off) != 0)
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size += 4;
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if (htab->opd_abi)
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{
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size += 4;
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if (htab->plt_static_chain)
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size += 4;
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if (htab->plt_thread_safe)
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size += 8;
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if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
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size += 4;
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}
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if (stub_entry->h != NULL
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&& (stub_entry->h == htab->tls_get_addr_fd
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|| stub_entry->h == htab->tls_get_addr)
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@ -9983,12 +10009,14 @@ build_plt_stub (struct ppc_link_hash_table *htab,
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bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
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{
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bfd *obfd = htab->stub_bfd;
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bfd_boolean plt_load_toc = htab->opd_abi;
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bfd_boolean plt_static_chain = htab->plt_static_chain;
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bfd_boolean plt_thread_safe = htab->plt_thread_safe;
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bfd_boolean use_fake_dep = plt_thread_safe;
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bfd_vma cmp_branch_off = 0;
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if (!ALWAYS_USE_FAKE_DEP
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&& plt_load_toc
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&& plt_thread_safe
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&& !(stub_entry->h != NULL
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&& (stub_entry->h == htab->tls_get_addr_fd
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@ -9996,7 +10024,8 @@ build_plt_stub (struct ppc_link_hash_table *htab,
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&& !htab->no_tls_get_addr_opt))
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{
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bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
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bfd_vma pltindex = (pltoff - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
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bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab))
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/ PLT_ENTRY_SIZE (htab));
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bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
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bfd_vma to, from;
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@ -10030,22 +10059,25 @@ build_plt_stub (struct ppc_link_hash_table *htab,
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r[1].r_offset = r[0].r_offset + 4;
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r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
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r[1].r_addend = r[0].r_addend;
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if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
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if (plt_load_toc)
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{
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r[2].r_offset = r[1].r_offset + 4;
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r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
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r[2].r_addend = r[0].r_addend;
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}
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else
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{
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r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
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r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
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r[2].r_addend = r[0].r_addend + 8;
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if (plt_static_chain)
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if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
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{
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r[3].r_offset = r[2].r_offset + 4;
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r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
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r[3].r_addend = r[0].r_addend + 16;
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r[2].r_offset = r[1].r_offset + 4;
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r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
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r[2].r_addend = r[0].r_addend;
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}
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else
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{
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r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
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r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
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r[2].r_addend = r[0].r_addend + 8;
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if (plt_static_chain)
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{
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r[3].r_offset = r[2].r_offset + 4;
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r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
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r[3].r_addend = r[0].r_addend + 16;
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}
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}
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}
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}
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@ -10054,20 +10086,24 @@ build_plt_stub (struct ppc_link_hash_table *htab,
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bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
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bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4;
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bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4;
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if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
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if (plt_load_toc
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&& PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
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{
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bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4;
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offset = 0;
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}
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bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
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if (use_fake_dep)
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if (plt_load_toc)
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{
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bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
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bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
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if (use_fake_dep)
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{
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bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4;
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bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4;
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}
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bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
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if (plt_static_chain)
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bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
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}
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bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4;
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if (plt_static_chain)
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bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4;
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}
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else
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{
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@ -10077,22 +10113,25 @@ build_plt_stub (struct ppc_link_hash_table *htab,
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|| stub_entry->stub_type == ppc_stub_plt_call_r2save)
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r[0].r_offset += 4;
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r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
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if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
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if (plt_load_toc)
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{
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r[1].r_offset = r[0].r_offset + 4;
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r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
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r[1].r_addend = r[0].r_addend;
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}
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else
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{
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r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
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r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
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r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
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if (plt_static_chain)
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if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
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{
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r[2].r_offset = r[1].r_offset + 4;
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r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
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r[2].r_addend = r[0].r_addend + 8;
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r[1].r_offset = r[0].r_offset + 4;
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r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
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r[1].r_addend = r[0].r_addend;
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}
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else
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{
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r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
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r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
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r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
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if (plt_static_chain)
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{
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r[2].r_offset = r[1].r_offset + 4;
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r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
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r[2].r_addend = r[0].r_addend + 8;
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}
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}
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}
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}
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@ -10100,22 +10139,26 @@ build_plt_stub (struct ppc_link_hash_table *htab,
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|| stub_entry->stub_type == ppc_stub_plt_call_r2save)
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bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
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bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4;
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if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
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if (plt_load_toc
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&& PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
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{
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bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
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offset = 0;
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}
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bfd_put_32 (obfd, MTCTR_R12, p), p += 4;
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if (use_fake_dep)
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if (plt_load_toc)
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{
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bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
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bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
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if (use_fake_dep)
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{
|
||||
bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4;
|
||||
bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
|
||||
}
|
||||
if (plt_static_chain)
|
||||
bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
|
||||
bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
|
||||
}
|
||||
if (plt_static_chain)
|
||||
bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
|
||||
bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
|
||||
}
|
||||
if (plt_thread_safe && !use_fake_dep)
|
||||
if (plt_load_toc && plt_thread_safe && !use_fake_dep)
|
||||
{
|
||||
bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
|
||||
bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
|
||||
@ -10214,6 +10257,8 @@ get_r2off (struct bfd_link_info *info,
|
||||
/* Support linking -R objects. Get the toc pointer from the
|
||||
opd entry. */
|
||||
char buf[8];
|
||||
if (!htab->opd_abi)
|
||||
return r2off;
|
||||
asection *opd = stub_entry->h->elf.root.u.def.section;
|
||||
bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
|
||||
|
||||
@ -10443,7 +10488,8 @@ ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
|
||||
r[0].r_offset = loc - stub_entry->stub_sec->contents;
|
||||
if (bfd_big_endian (info->output_bfd))
|
||||
r[0].r_offset += 2;
|
||||
if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
|
||||
if (stub_entry->stub_type == ppc_stub_plt_branch_r2off
|
||||
&& htab->opd_abi)
|
||||
r[0].r_offset += 4;
|
||||
r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
|
||||
r[0].r_addend = dest;
|
||||
@ -10456,7 +10502,8 @@ ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
|
||||
}
|
||||
}
|
||||
|
||||
if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
|
||||
if (stub_entry->stub_type != ppc_stub_plt_branch_r2off
|
||||
|| !htab->opd_abi)
|
||||
{
|
||||
if (PPC_HA (off) != 0)
|
||||
{
|
||||
@ -10707,10 +10754,11 @@ ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
|
||||
if (info->emitrelocations)
|
||||
{
|
||||
stub_entry->stub_sec->reloc_count
|
||||
+= (2
|
||||
+ (PPC_HA (off) != 0)
|
||||
+ (htab->plt_static_chain
|
||||
&& PPC_HA (off + 16) == PPC_HA (off)));
|
||||
+= ((PPC_HA (off) != 0)
|
||||
+ (htab->opd_abi
|
||||
? 2 + (htab->plt_static_chain
|
||||
&& PPC_HA (off + 16) == PPC_HA (off))
|
||||
: 1));
|
||||
stub_entry->stub_sec->flags |= SEC_RELOC;
|
||||
}
|
||||
}
|
||||
@ -10737,7 +10785,7 @@ ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
|
||||
if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
|
||||
{
|
||||
r2off = get_r2off (info, stub_entry);
|
||||
if (r2off == 0)
|
||||
if (r2off == 0 && htab->opd_abi)
|
||||
{
|
||||
htab->stub_error = TRUE;
|
||||
return FALSE;
|
||||
@ -10750,8 +10798,11 @@ ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
|
||||
|
||||
local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other);
|
||||
|
||||
/* If the branch offset if too big, use a ppc_stub_plt_branch. */
|
||||
if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off)
|
||||
/* If the branch offset if too big, use a ppc_stub_plt_branch.
|
||||
Do the same for -R objects without function descriptors. */
|
||||
if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off
|
||||
|| (stub_entry->stub_type == ppc_stub_long_branch_r2off
|
||||
&& r2off == 0))
|
||||
{
|
||||
struct ppc_branch_hash_entry *br_entry;
|
||||
|
||||
@ -10794,7 +10845,8 @@ ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
|
||||
stub_entry->stub_sec->flags |= SEC_RELOC;
|
||||
}
|
||||
|
||||
if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
|
||||
if (stub_entry->stub_type != ppc_stub_plt_branch_r2off
|
||||
|| !htab->opd_abi)
|
||||
{
|
||||
size = 12;
|
||||
if (PPC_HA (off) != 0)
|
||||
@ -11698,7 +11750,9 @@ ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
|
||||
htab->plt_stub_align = plt_stub_align;
|
||||
if (plt_thread_safe == -1 && !info->executable)
|
||||
plt_thread_safe = 1;
|
||||
if (plt_thread_safe == -1)
|
||||
if (!htab->opd_abi)
|
||||
plt_thread_safe = 0;
|
||||
else if (plt_thread_safe == -1)
|
||||
{
|
||||
static const char *const thread_starter[] =
|
||||
{
|
||||
@ -12281,26 +12335,56 @@ ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
|
||||
plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
|
||||
bfd_put_64 (htab->glink->owner, plt0, p);
|
||||
p += 8;
|
||||
bfd_put_32 (htab->glink->owner, MFLR_R12, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, BCL_20_31, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, MFLR_R11, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, MTLR_R12, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
|
||||
p += 4;
|
||||
if (htab->opd_abi)
|
||||
{
|
||||
bfd_put_32 (htab->glink->owner, MFLR_R12, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, BCL_20_31, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, MFLR_R11, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, MTLR_R12, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p);
|
||||
p += 4;
|
||||
}
|
||||
else
|
||||
{
|
||||
bfd_put_32 (htab->glink->owner, MFLR_R0, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, BCL_20_31, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, MFLR_R11, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, MTLR_R0, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, LD_R12_0R11, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, MTCTR_R12, p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
|
||||
p += 4;
|
||||
}
|
||||
bfd_put_32 (htab->glink->owner, BCTR, p);
|
||||
p += 4;
|
||||
while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
|
||||
@ -12313,17 +12397,21 @@ ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
|
||||
indx = 0;
|
||||
while (p < htab->glink->contents + htab->glink->size)
|
||||
{
|
||||
if (indx < 0x8000)
|
||||
if (htab->opd_abi)
|
||||
{
|
||||
bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
|
||||
p += 4;
|
||||
}
|
||||
else
|
||||
{
|
||||
bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
|
||||
p += 4;
|
||||
if (indx < 0x8000)
|
||||
{
|
||||
bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
|
||||
p += 4;
|
||||
}
|
||||
else
|
||||
{
|
||||
bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
|
||||
p += 4;
|
||||
bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx),
|
||||
p);
|
||||
p += 4;
|
||||
}
|
||||
}
|
||||
bfd_put_32 (htab->glink->owner,
|
||||
B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
|
||||
@ -14451,8 +14539,8 @@ ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
|
||||
rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
|
||||
rela.r_addend = ent->addend;
|
||||
loc = (htab->relplt->contents
|
||||
+ ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
|
||||
/ (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
|
||||
+ ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab))
|
||||
/ PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela)));
|
||||
}
|
||||
bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
|
||||
}
|
||||
@ -14553,7 +14641,7 @@ ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
|
||||
of glink rather than the first entry point, which is
|
||||
what ld.so needs, and now have a bigger stub to
|
||||
support automatic multiple TOCs. */
|
||||
dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
|
||||
dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4;
|
||||
break;
|
||||
|
||||
case DT_PPC64_OPD:
|
||||
@ -14626,7 +14714,7 @@ ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
|
||||
{
|
||||
/* Set .plt entry size. */
|
||||
elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
|
||||
= PLT_ENTRY_SIZE;
|
||||
= PLT_ENTRY_SIZE (htab);
|
||||
}
|
||||
|
||||
/* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
|
||||
|
||||
Loading…
Reference in New Issue
Block a user