diff options
Diffstat (limited to 'bfd/elf32-ppc.c')
| -rw-r--r-- | bfd/elf32-ppc.c | 41 |
1 files changed, 32 insertions, 9 deletions
diff --git a/bfd/elf32-ppc.c b/bfd/elf32-ppc.c index efdaf04..73701d4 100644 --- a/bfd/elf32-ppc.c +++ b/bfd/elf32-ppc.c @@ -69,7 +69,7 @@ static bfd_reloc_status_type ppc_elf_unhandled_reloc /* For new-style .glink and .plt. */ #define GLINK_PLTRESOLVE 16*4 #define GLINK_ENTRY_SIZE(htab, h) \ - ((4*4 \ + (((!htab->params->speculate_indirect_jumps ? 6*4 : 4*4) \ + (h != NULL \ && h == htab->tls_get_addr \ && !htab->params->no_tls_get_addr_opt ? 8*4 : 0) \ @@ -155,6 +155,8 @@ static const bfd_vma ppc_elf_vxworks_pic_plt0_entry #define BA 0x48000002 #define BCL_20_31 0x429f0005 #define BCTR 0x4e800420 +#define CRSETEQ 0x4c421242 +#define BEQCTRM 0x4dc20420 #define BEQLR 0x4d820020 #define CMPWI_11_0 0x2c0b0000 #define LIS_11 0x3d600000 @@ -2878,15 +2880,14 @@ ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) static bfd_boolean is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off) { - bfd_byte buf[4 * 4]; + bfd_byte buf[3 * 4]; if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf)) return FALSE; return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11 && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11 - && bfd_get_32 (abfd, buf + 8) == MTCTR_11 - && bfd_get_32 (abfd, buf + 12) == BCTR); + && bfd_get_32 (abfd, buf + 8) == MTCTR_11); } static bfd_boolean @@ -3365,7 +3366,7 @@ ppc_elf_link_hash_table_create (bfd *abfd) { struct ppc_elf_link_hash_table *ret; static struct ppc_elf_params default_params - = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 }; + = { PLT_OLD, 0, 1, 0, 1, 0, 0, 12, 0, 0, 0 }; ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table)); if (ret == NULL) @@ -7167,6 +7168,8 @@ ppc_elf_relax_section (bfd *abfd, size = 4 * ARRAY_SIZE (stub_entry); insn_offset = 0; } + if (!htab->params->speculate_indirect_jumps) + size += 8; stub_rtype = R_PPC_RELAX; if (tsec == htab->elf.splt || tsec == htab->glink) @@ -7448,6 +7451,26 @@ elf_finish_pointer_linker_section (bfd *input_bfd, #define PPC_HI(v) (((v) >> 16) & 0xffff) #define PPC_HA(v) PPC_HI ((v) + 0x8000) +static inline bfd_byte * +output_bctr (struct ppc_elf_link_hash_table *htab, bfd *obfd, bfd_byte *p) +{ + if (!htab->params->speculate_indirect_jumps) + { + bfd_put_32 (obfd, CRSETEQ, p); + p += 4; + bfd_put_32 (obfd, BEQCTRM, p); + p += 4; + bfd_put_32 (obfd, B, p); + p += 4; + } + else + { + bfd_put_32 (obfd, BCTR, p); + p += 4; + } + return p; +} + static void write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent, asection *plt_sec, unsigned char *p, @@ -7515,8 +7538,7 @@ write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent, p += 4; bfd_put_32 (output_bfd, MTCTR_11, p); p += 4; - bfd_put_32 (output_bfd, BCTR, p); - p += 4; + p = output_bctr (htab, output_bfd, p); while (p < end) { bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p); @@ -8954,6 +8976,7 @@ ppc_elf_relocate_section (bfd *output_bfd, stub = stub_entry; size = ARRAY_SIZE (stub_entry); } + --size; relocation += addend; if (bfd_link_relocatable (info)) @@ -8978,6 +9001,7 @@ ppc_elf_relocate_section (bfd *output_bfd, bfd_put_32 (input_bfd, insn, contents + insn_offset); insn_offset += 4; } + output_bctr (htab, input_bfd, contents + insn_offset); /* Rewrite the reloc and convert one of the trailing nop relocs to describe this relocation. */ @@ -10686,8 +10710,7 @@ ppc_elf_finish_dynamic_sections (bfd *output_bfd, p += 4; bfd_put_32 (output_bfd, ADD_11_0_11, p); p += 4; - bfd_put_32 (output_bfd, BCTR, p); - p += 4; + p = output_bctr (htab, output_bfd, p); while (p < endp) { bfd_put_32 (output_bfd, |