Blame SOURCES/binutils-revert-PowerPC-speculation-barriers.patch

869a11
diff -rup binutils.orig/bfd/elf32-ppc.c binutils-2.30/bfd/elf32-ppc.c
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--- binutils.orig/bfd/elf32-ppc.c	2018-02-08 10:49:07.649185371 +0000
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+++ binutils-2.30/bfd/elf32-ppc.c	2018-02-08 10:50:11.058395459 +0000
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@@ -69,7 +69,7 @@ static bfd_reloc_status_type ppc_elf_unh
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 /* For new-style .glink and .plt.  */
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 #define GLINK_PLTRESOLVE 16*4
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 #define GLINK_ENTRY_SIZE(htab, h)					\
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-  (((!htab->params->speculate_indirect_jumps ? 6*4 : 4*4)			\
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+  ((4*4									\
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     + (h != NULL							\
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        && h == htab->tls_get_addr					\
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        && !htab->params->no_tls_get_addr_opt ? 8*4 : 0)			\
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@@ -155,8 +155,6 @@ static const bfd_vma ppc_elf_vxworks_pic
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 #define BA		0x48000002
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 #define BCL_20_31	0x429f0005
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 #define BCTR		0x4e800420
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-#define CRSETEQ		0x4c421242
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-#define BEQCTRM		0x4dc20420
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 #define BEQLR		0x4d820020
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 #define CMPWI_11_0	0x2c0b0000
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 #define LIS_11		0x3d600000
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@@ -2880,14 +2878,15 @@ ppc_elf_final_write_processing (bfd *abf
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 static bfd_boolean
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 is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
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 {
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-  bfd_byte buf[3 * 4];
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+  bfd_byte buf[4 * 4];
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   if (!bfd_get_section_contents (abfd, glink, buf, off, sizeof buf))
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     return FALSE;
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   return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
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 	  && (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
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-	  && bfd_get_32 (abfd, buf + 8) == MTCTR_11);
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+	  && bfd_get_32 (abfd, buf + 8) == MTCTR_11
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+	  && bfd_get_32 (abfd, buf + 12) == BCTR);
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 }
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 static bfd_boolean
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@@ -3366,7 +3365,7 @@ ppc_elf_link_hash_table_create (bfd *abf
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 {
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   struct ppc_elf_link_hash_table *ret;
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   static struct ppc_elf_params default_params
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-    = { PLT_OLD, 0, 1, 0, 1, 0, 0, 12, 0, 0, 0 };
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+    = { PLT_OLD, 0, 0, 1, 0, 0, 12, 0, 0, 0 };
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   ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
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   if (ret == NULL)
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@@ -7171,8 +7170,6 @@ ppc_elf_relax_section (bfd *abfd,
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 		  size = 4 * ARRAY_SIZE (stub_entry);
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 		  insn_offset = 0;
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 		}
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-	      if (!htab->params->speculate_indirect_jumps)
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-		size += 8;
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 	      stub_rtype = R_PPC_RELAX;
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 	      if (tsec == htab->elf.splt
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 		  || tsec == htab->glink)
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@@ -7454,26 +7451,6 @@ elf_finish_pointer_linker_section (bfd *
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 #define PPC_HI(v) (((v) >> 16) & 0xffff)
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 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
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-static inline bfd_byte *
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-output_bctr (struct ppc_elf_link_hash_table *htab, bfd *obfd, bfd_byte *p)
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-{
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-  if (!htab->params->speculate_indirect_jumps)
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-    {
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-      bfd_put_32 (obfd, CRSETEQ, p);
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-      p += 4;
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-      bfd_put_32 (obfd, BEQCTRM, p);
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-      p += 4;
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-      bfd_put_32 (obfd, B, p);
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-      p += 4;
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-    }
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-  else
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-    {
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-      bfd_put_32 (obfd, BCTR, p);
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-      p += 4;
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-    }
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-  return p;
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-}
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-
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 static void
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 write_glink_stub (struct elf_link_hash_entry *h, struct plt_entry *ent,
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 		  asection *plt_sec, unsigned char *p,
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@@ -7541,7 +7518,8 @@ write_glink_stub (struct elf_link_hash_e
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   p += 4;
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   bfd_put_32 (output_bfd, MTCTR_11, p);
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   p += 4;
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-  p = output_bctr (htab, output_bfd, p);
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+  bfd_put_32 (output_bfd, BCTR, p);
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+  p += 4;
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   while (p < end)
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     {
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       bfd_put_32 (output_bfd, htab->params->ppc476_workaround ? BA : NOP, p);
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@@ -8979,7 +8957,6 @@ ppc_elf_relocate_section (bfd *output_bf
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 		stub = stub_entry;
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 		size = ARRAY_SIZE (stub_entry);
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 	      }
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-	    --size;
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 	    relocation += addend;
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 	    if (bfd_link_relocatable (info))
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@@ -9004,7 +8981,6 @@ ppc_elf_relocate_section (bfd *output_bf
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 		bfd_put_32 (input_bfd, insn, contents + insn_offset);
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 		insn_offset += 4;
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 	      }
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-	    output_bctr (htab, input_bfd, contents + insn_offset);
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 	    /* Rewrite the reloc and convert one of the trailing nop
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 	       relocs to describe this relocation.  */
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@@ -10713,7 +10689,8 @@ ppc_elf_finish_dynamic_sections (bfd *ou
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       p += 4;
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       bfd_put_32 (output_bfd, ADD_11_0_11, p);
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       p += 4;
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-      p = output_bctr (htab, output_bfd, p);
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+      bfd_put_32 (output_bfd, BCTR, p);
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+      p += 4;
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       while (p < endp)
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 	{
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 	  bfd_put_32 (output_bfd,
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diff -rup binutils.orig/bfd/elf32-ppc.h binutils-2.30/bfd/elf32-ppc.h
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--- binutils.orig/bfd/elf32-ppc.h	2018-02-08 10:49:07.644185433 +0000
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+++ binutils-2.30/bfd/elf32-ppc.h	2018-02-08 10:50:11.058395459 +0000
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@@ -35,9 +35,6 @@ struct ppc_elf_params
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   /* Set if individual PLT call stubs should be aligned.  */
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   int plt_stub_align;
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-  /* Clear if PLT call stubs should use a speculative execution barrier.  */
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-  int speculate_indirect_jumps;
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-
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   /* Whether to emit symbols for stubs.  */
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   int emit_stub_syms;
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diff -rup binutils.orig/bfd/elf64-ppc.c binutils-2.30/bfd/elf64-ppc.c
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--- binutils.orig/bfd/elf64-ppc.c	2018-02-08 10:49:07.645185421 +0000
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+++ binutils-2.30/bfd/elf64-ppc.c	2018-02-08 10:50:11.060395434 +0000
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@@ -161,10 +161,6 @@ static bfd_vma opd_entry_value
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 #define LD_R11_0R11	0xe96b0000	/* ld	 %r11,xxx+16@l(%r11) */
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 #define BCTR		0x4e800420	/* bctr			     */
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-#define CRSETEQ		0x4c421242	/* crset 4*%cr0+%eq	 */
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-#define BEQCTRM		0x4dc20420	/* beqctr-		 */
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-#define BEQCTRLM	0x4dc20421	/* beqctrl-		 */
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-
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 #define ADDI_R11_R11	0x396b0000	/* addi %r11,%r11,off@l	 */
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 #define ADDIS_R2_R2	0x3c420000	/* addis %r2,%r2,off@ha	 */
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 #define ADDI_R2_R2	0x38420000	/* addi	 %r2,%r2,off@l	 */
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@@ -193,8 +189,7 @@ static bfd_vma opd_entry_value
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 /* __glink_PLTresolve stub instructions.  We enter with the index in R0.  */
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 #define GLINK_PLTRESOLVE_SIZE(htab)			\
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-  (8u + (htab->opd_abi ? 11 * 4 : 14 * 4)		\
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-   + (!htab->params->speculate_indirect_jumps ? 2 * 4 : 0))
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+  (8u + (htab->opd_abi ? 11 * 4 : 14 * 4))
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 					/* 0:				*/
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 					/*  .quad plt0-1f		*/
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 					/* __glink:			*/
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@@ -9886,8 +9881,6 @@ size_global_entry_stubs (struct elf_link
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 	unsigned int align_power;
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 	stub_size = 16;
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-	if (!htab->params->speculate_indirect_jumps)
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-	  stub_size += 8;
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 	stub_off = s->size;
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 	if (htab->params->plt_stub_align >= 0)
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 	  align_power = htab->params->plt_stub_align;
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@@ -10453,8 +10446,6 @@ plt_stub_size (struct ppc_link_hash_tabl
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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->params->speculate_indirect_jumps)
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-    size += 8;
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   if (htab->opd_abi)
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     {
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       size += 4;
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@@ -10476,11 +10467,7 @@ plt_stub_size (struct ppc_link_hash_tabl
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       size += 7 * 4;
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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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-	{
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-	  size += 6 * 4;
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-	  if (!htab->params->speculate_indirect_jumps)
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-	    size -= 4;
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-	}
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+	size += 6 * 4;
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     }
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   return size;
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 }
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@@ -10515,26 +10502,6 @@ plt_stub_pad (struct ppc_link_hash_table
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   return 0;
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 }
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-static inline bfd_byte *
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-output_bctr (struct ppc_link_hash_table *htab, bfd *obfd, bfd_byte *p)
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-{
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-  if (!htab->params->speculate_indirect_jumps)
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-    {
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-      bfd_put_32 (obfd, CRSETEQ, p);
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-      p += 4;
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-      bfd_put_32 (obfd, BEQCTRM, p);
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-      p += 4;
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-      bfd_put_32 (obfd, B_DOT, p);
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-      p += 4;
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-    }
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-  else
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-    {
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-      bfd_put_32 (obfd, BCTR, p);
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-      p += 4;
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-    }
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-  return p;
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-}
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-
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 /* Build a .plt call stub.  */
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 static inline bfd_byte *
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@@ -10555,7 +10522,6 @@ build_plt_stub (struct ppc_link_hash_tab
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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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-      && htab->params->speculate_indirect_jumps
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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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 	   && htab->params->tls_get_addr_opt))
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@@ -10710,7 +10676,7 @@ build_plt_stub (struct ppc_link_hash_tab
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       bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4;
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     }
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   else
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-    p = output_bctr (htab, obfd, p);
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+    bfd_put_32 (obfd, BCTR, p),					p += 4;
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   return p;
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 }
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@@ -10754,13 +10720,7 @@ build_tls_get_addr_stub (struct ppc_link
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   if (r != NULL)
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     r[0].r_offset += 2 * 4;
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   p = build_plt_stub (htab, stub_entry, p, offset, r);
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-  if (!htab->params->speculate_indirect_jumps)
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-    {
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-      p -= 4;
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-      bfd_put_32 (obfd, BEQCTRLM, p - 4);
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-    }
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-  else
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-    bfd_put_32 (obfd, BCTRL, p - 4);
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+  bfd_put_32 (obfd, BCTRL, p - 4);
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   bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p),	p += 4;
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   bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p),	p += 4;
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@@ -11113,7 +11073,8 @@ ppc_build_one_stub (struct bfd_hash_entr
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       p += 4;
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       bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p);
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       p += 4;
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-      p = output_bctr (htab, htab->params->stub_bfd, p);
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+      bfd_put_32 (htab->params->stub_bfd, BCTR, p);
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+      p += 4;
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       break;
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     case ppc_stub_plt_call:
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@@ -11446,8 +11407,6 @@ ppc_size_one_stub (struct bfd_hash_entry
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 	      if (PPC_LO (r2off) != 0)
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 		size += 4;
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 	    }
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-	  if (!htab->params->speculate_indirect_jumps)
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-	    size += 8;
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 	}
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       else if (info->emitrelocations)
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 	{
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@@ -13089,7 +13048,7 @@ build_global_entry_stubs (struct elf_lin
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 	p += 4;
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 	bfd_put_32 (s->owner, MTCTR_R12, p);
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 	p += 4;
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-	output_bctr (htab, s->owner, p);
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+	bfd_put_32 (s->owner, BCTR, p);
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 	break;
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       }
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   return TRUE;
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@@ -13218,7 +13177,8 @@ ppc64_elf_build_stubs (struct bfd_link_i
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 	  bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p);
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 	  p += 4;
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 	}
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-      p = output_bctr (htab, htab->glink->owner, p);
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+      bfd_put_32 (htab->glink->owner, BCTR, p);
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+      p += 4;
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       BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab));
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       /* Build the .glink lazy link call stubs.  */
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diff -rup binutils.orig/bfd/elf64-ppc.h binutils-2.30/bfd/elf64-ppc.h
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--- binutils.orig/bfd/elf64-ppc.h	2018-02-08 10:49:07.637185520 +0000
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+++ binutils-2.30/bfd/elf64-ppc.h	2018-02-08 10:50:11.060395434 +0000
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@@ -51,9 +51,6 @@ struct ppc64_elf_params
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   /* Set if PLT call stubs for localentry:0 functions should omit r2 save.  */
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   int plt_localentry0;
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-  /* Clear if PLT call stubs should use a speculative execution barrier.  */
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-  int speculate_indirect_jumps;
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-
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   /* Whether to canonicalize .opd so that there are no overlapping
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      .opd entries.  */
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   int non_overlapping_opd;
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diff -rup binutils.orig/gold/options.h binutils-2.30/gold/options.h
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--- binutils.orig/gold/options.h	2018-02-08 10:49:07.354189045 +0000
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+++ binutils-2.30/gold/options.h	2018-02-08 10:50:11.060395434 +0000
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@@ -1108,10 +1108,6 @@ class General_options
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 	      N_("(PowerPC64 only) Optimize calls to ELFv2 localentry:0 functions"),
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 	      N_("(PowerPC64 only) Don't optimize ELFv2 calls"));
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-  DEFINE_bool(speculate_indirect_jumps, options::TWO_DASHES, '\0', true,
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-	      N_("(PowerPC only) PLT call stubs without speculation barrier"),
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-	      N_("(PowerPC only) PLT call stubs with speculation barrier"));
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-
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   DEFINE_bool(plt_static_chain, options::TWO_DASHES, '\0', false,
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 	      N_("(PowerPC64 only) PLT call stubs should load r11"),
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 	      N_("(PowerPC64 only) PLT call stubs should not load r11"));
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diff -rup binutils.orig/gold/powerpc.cc binutils-2.30/gold/powerpc.cc
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--- binutils.orig/gold/powerpc.cc	2018-02-08 10:49:07.355189033 +0000
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+++ binutils-2.30/gold/powerpc.cc	2018-02-08 10:50:11.061395422 +0000
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@@ -3781,8 +3781,6 @@ static const uint32_t b			= 0x48000000;
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 static const uint32_t bcl_20_31		= 0x429f0005;
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 static const uint32_t bctr		= 0x4e800420;
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 static const uint32_t bctrl		= 0x4e800421;
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-static const uint32_t beqctrm		= 0x4dc20420;
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-static const uint32_t beqctrlm		= 0x4dc20421;
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 static const uint32_t beqlr		= 0x4d820020;
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 static const uint32_t blr		= 0x4e800020;
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 static const uint32_t bnectr_p4		= 0x4ce20420;
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@@ -3792,7 +3790,6 @@ static const uint32_t cmpdi_11_0	= 0x2c2
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 static const uint32_t cmpwi_11_0	= 0x2c0b0000;
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 static const uint32_t cror_15_15_15	= 0x4def7b82;
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 static const uint32_t cror_31_31_31	= 0x4ffffb82;
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-static const uint32_t crseteq		= 0x4c421242;
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 static const uint32_t ld_0_1		= 0xe8010000;
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 static const uint32_t ld_0_12		= 0xe80c0000;
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 static const uint32_t ld_2_1		= 0xe8410000;
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@@ -4168,24 +4165,6 @@ write_insn(unsigned char* p, uint32_t v)
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   elfcpp::Swap<32, big_endian>::writeval(p, v);
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 }
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-template<bool big_endian>
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-static unsigned char*
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-output_bctr(unsigned char* p)
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-{
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-  if (!parameters->options().speculate_indirect_jumps())
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-    {
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-      write_insn<big_endian>(p, crseteq);
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-      p += 4;
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-      write_insn<big_endian>(p, beqctrm);
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-      p += 4;
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-      write_insn<big_endian>(p, b);
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-    }
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-  else
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-    write_insn<big_endian>(p, bctr);
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-  p += 4;
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-  return p;
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-}
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-
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 template<int size>
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 static inline unsigned int
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 param_plt_align()
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@@ -4454,7 +4433,6 @@ class Stub_table : public Output_relaxed
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       {
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 	const Symbol* gsym = p->first.sym_;
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 	return (4 * 4
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-		+ (!parameters->options().speculate_indirect_jumps() ? 2 * 4 : 0)
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 		+ (this->targ_->is_tls_get_addr_opt(gsym) ? 8 * 4 : 0));
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       }
869a11
 
869a11
@@ -4470,8 +4448,6 @@ class Stub_table : public Output_relaxed
869a11
     got_addr += ppcobj->toc_base_offset();
869a11
     Address off = plt_addr - got_addr;
869a11
     unsigned int bytes = 4 * 4 + 4 * (ha(off) != 0);
869a11
-    if (!parameters->options().speculate_indirect_jumps())
869a11
-      bytes += 2 * 4;
869a11
     const Symbol* gsym = p->first.sym_;
869a11
     if (this->targ_->is_tls_get_addr_opt(gsym))
869a11
       bytes += 13 * 4;
869a11
@@ -4502,8 +4478,6 @@ class Stub_table : public Output_relaxed
869a11
     if (p->first.dest_ - loc + (1 << 25) < 2 << 25)
869a11
       return 4;
869a11
     unsigned int bytes = 16;
869a11
-    if (!parameters->options().speculate_indirect_jumps())
869a11
-      bytes += 8;
869a11
     if (size == 32 && parameters->options().output_is_position_independent())
869a11
       bytes += 16;
869a11
     return bytes;
869a11
@@ -4955,8 +4929,7 @@ class Output_data_glink : public Output_
869a11
   {
869a11
     if (size == 64)
869a11
       return (8
869a11
-	      + (this->targ_->abiversion() < 2 ? 11 * 4 : 14 * 4)
869a11
-	      + (!parameters->options().speculate_indirect_jumps() ? 2 * 4 : 0));
869a11
+	      + (this->targ_->abiversion() < 2 ? 11 * 4 : 14 * 4));
869a11
     return 16 * 4;
869a11
   }
869a11
 
869a11
@@ -5033,8 +5006,7 @@ Output_data_glink<size, big_endian>::add
869a11
   std::pair<typename Global_entry_stub_entries::iterator, bool> p
869a11
     = this->global_entry_stubs_.insert(std::make_pair(gsym, off));
869a11
   if (p.second)
869a11
-    this->ge_size_
869a11
-      = off + 16 + (!parameters->options().speculate_indirect_jumps() ? 8 : 0);
869a11
+    this->ge_size_ = off + 16;
869a11
 }
869a11
 
869a11
 template<int size, bool big_endian>
869a11
@@ -5223,10 +5195,7 @@ Stub_table<size, big_endian>::do_write(O
869a11
 		= plt_load_toc && this->targ_->plt_thread_safe();
869a11
 	      bool use_fake_dep = false;
869a11
 	      Address cmp_branch_off = 0;
869a11
-	      if (thread_safe
869a11
-		  && !parameters->options().speculate_indirect_jumps())
869a11
-		use_fake_dep = true;
869a11
-	      else if (thread_safe)
869a11
+	      if (thread_safe)
869a11
 		{
869a11
 		  unsigned int pltindex
869a11
 		    = ((pltoff - this->targ_->first_plt_entry_offset())
869a11
@@ -5274,7 +5243,7 @@ Stub_table<size, big_endian>::do_write(O
869a11
 						 + this->targ_->stk_linker()));
869a11
 		      p += 4;
869a11
 		    }
869a11
-		  use_fake_dep |= thread_safe;
869a11
+		  use_fake_dep = thread_safe;
869a11
 		}
869a11
 	      if (ha(off) != 0)
869a11
 		{
869a11
@@ -5365,14 +5334,7 @@ Stub_table<size, big_endian>::do_write(O
869a11
 	      if (!cs->second.localentry0_
869a11
 		  && this->targ_->is_tls_get_addr_opt(gsym))
869a11
 		{
869a11
-		  if (!parameters->options().speculate_indirect_jumps())
869a11
-		    {
869a11
-		      write_insn<big_endian>(p, crseteq);
869a11
-		      p += 4;
869a11
-		      write_insn<big_endian>(p, beqctrlm);
869a11
-		    }
869a11
-		  else
869a11
-		    write_insn<big_endian>(p, bctrl);
869a11
+		  write_insn<big_endian>(p, bctrl);
869a11
 		  p += 4;
869a11
 		  write_insn<big_endian>(p, ld_2_1 + this->targ_->stk_toc());
869a11
 		  p += 4;
869a11
@@ -5391,7 +5353,7 @@ Stub_table<size, big_endian>::do_write(O
869a11
 		  write_insn<big_endian>(p, b | (cmp_branch_off & 0x3fffffc));
869a11
 		}
869a11
 	      else
869a11
-		output_bctr<big_endian>(p);
869a11
+		write_insn<big_endian>(p, bctr);
869a11
 	    }
869a11
 	}
869a11
 
869a11
@@ -5426,7 +5388,7 @@ Stub_table<size, big_endian>::do_write(O
869a11
 		  write_insn<big_endian>(p, ld_12_12 + l(brltoff)),	p += 4;
869a11
 		}
869a11
 	      write_insn<big_endian>(p, mtctr_12),			p += 4;
869a11
-	      output_bctr<big_endian>(p);
869a11
+	      write_insn<big_endian>(p, bctr);
869a11
 	    }
869a11
 	}
869a11
     }
869a11
@@ -5522,7 +5484,7 @@ Stub_table<size, big_endian>::do_write(O
869a11
 	      p += 4;
869a11
 	      write_insn<big_endian>(p, mtctr_11);
869a11
 	      p += 4;
869a11
-	      output_bctr<big_endian>(p);
869a11
+	      write_insn<big_endian>(p, bctr);
869a11
 	    }
869a11
 	}
869a11
 
869a11
@@ -5563,7 +5525,7 @@ Stub_table<size, big_endian>::do_write(O
869a11
 	  p += 4;
869a11
 	  write_insn<big_endian>(p, mtctr_12);
869a11
 	  p += 4;
869a11
-	  output_bctr<big_endian>(p);
869a11
+	  write_insn<big_endian>(p, bctr);
869a11
 	}
869a11
     }
869a11
   if (this->need_save_res_)
869a11
@@ -5630,7 +5592,7 @@ Output_data_glink<size, big_endian>::do_
869a11
 	      write_insn<big_endian>(p, mtctr_12),		p += 4;
869a11
 	      write_insn<big_endian>(p, ld_11_11 + 8),		p += 4;
869a11
 	    }
869a11
-	  p = output_bctr<big_endian>(p);
869a11
+	  write_insn<big_endian>(p, bctr),			p += 4;
869a11
 	  gold_assert(p == oview + this->pltresolve_size());
869a11
 
869a11
 	  // Write lazy link call stubs.
869a11
@@ -5686,7 +5648,7 @@ Output_data_glink<size, big_endian>::do_
869a11
 	  write_insn<big_endian>(p, addis_12_12 + ha(off)),	p += 4;
869a11
 	  write_insn<big_endian>(p, ld_12_12 + l(off)),		p += 4;
869a11
 	  write_insn<big_endian>(p, mtctr_12),			p += 4;
869a11
-	  output_bctr<big_endian>(p);
869a11
+	  write_insn<big_endian>(p, bctr);
869a11
 	}
869a11
     }
869a11
   else
869a11
@@ -5778,7 +5740,8 @@ Output_data_glink<size, big_endian>::do_
869a11
 	  write_insn<big_endian>(p, add_11_0_11);
869a11
 	}
869a11
       p += 4;
869a11
-      p = output_bctr<big_endian>(p);
869a11
+      write_insn<big_endian>(p, bctr);
869a11
+      p += 4;
869a11
       while (p < end_p)
869a11
 	{
869a11
 	  write_insn<big_endian>(p, nop);
869a11
diff -rup binutils.orig/ld/emultempl/ppc32elf.em binutils-2.30/ld/emultempl/ppc32elf.em
869a11
--- binutils.orig/ld/emultempl/ppc32elf.em	2018-02-08 10:49:07.192191063 +0000
869a11
+++ binutils-2.30/ld/emultempl/ppc32elf.em	2018-02-08 10:50:11.062395410 +0000
869a11
@@ -38,7 +38,7 @@ static int notlsopt = 0;
869a11
 /* Choose the correct place for .got.  */
869a11
 static int old_got = 0;
869a11
 
869a11
-static struct ppc_elf_params params = { PLT_UNSET, 0, 1, -1,
869a11
+static struct ppc_elf_params params = { PLT_UNSET, 0, -1,
869a11
 					0, 0, 0, 0, 0, 0, 0 };
869a11
 
869a11
 static void
869a11
@@ -246,8 +246,6 @@ enum ppc32_opt
869a11
   OPTION_NO_TLS_GET_ADDR_OPT,
869a11
   OPTION_NEW_PLT,
869a11
   OPTION_OLD_PLT,
869a11
-  OPTION_SPECULATE_INDIRECT_JUMPS,
869a11
-  OPTION_NO_SPECULATE_INDIRECT_JUMPS,
869a11
   OPTION_PLT_ALIGN,
869a11
   OPTION_NO_PLT_ALIGN,
869a11
   OPTION_OLD_GOT,
869a11
@@ -269,8 +267,6 @@ if test -z "$VXWORKS_BASE_EM_FILE" ; the
869a11
   PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST_LONGOPTS}'
869a11
   { "secure-plt", no_argument, NULL, OPTION_NEW_PLT },
869a11
   { "bss-plt", no_argument, NULL, OPTION_OLD_PLT },
869a11
-  { "speculate-indirect-jumps", no_argument, NULL, OPTION_SPECULATE_INDIRECT_JUMPS },
869a11
-  { "no-speculate-indirect-jumps", no_argument, NULL, OPTION_NO_SPECULATE_INDIRECT_JUMPS },
869a11
   { "plt-align", optional_argument, NULL, OPTION_PLT_ALIGN },
869a11
   { "no-plt-align", no_argument, NULL, OPTION_NO_PLT_ALIGN },
869a11
   { "sdata-got", no_argument, NULL, OPTION_OLD_GOT },'
869a11
@@ -304,12 +300,6 @@ if test -z "$VXWORKS_BASE_EM_FILE" ; the
869a11
   --bss-plt                   Force old-style BSS PLT.\n"
869a11
 		   ));
869a11
   fprintf (file, _("\
869a11
-  --speculate-indirect-jumps  PLT call stubs without speculation barrier.\n"
869a11
-		   ));
869a11
-  fprintf (file, _("\
869a11
-  --no-speculate-indirect-jumps PLT call stubs with speculation barrier.\n"
869a11
-		   ));
869a11
-  fprintf (file, _("\
869a11
   --plt-align                 Align PLT call stubs to fit cache lines.\n"
869a11
 		   ));
869a11
   fprintf (file, _("\
869a11
@@ -360,14 +350,6 @@ PARSE_AND_LIST_ARGS_CASES=${PARSE_AND_LI
869a11
       params.plt_style = PLT_OLD;
869a11
       break;
869a11
 
869a11
-    case OPTION_SPECULATE_INDIRECT_JUMPS:
869a11
-      params.speculate_indirect_jumps = 1;
869a11
-      break;
869a11
-
869a11
-    case OPTION_NO_SPECULATE_INDIRECT_JUMPS:
869a11
-      params.speculate_indirect_jumps = 0;
869a11
-      break;
869a11
-
869a11
     case OPTION_PLT_ALIGN:
869a11
       if (optarg != NULL)
869a11
 	{
869a11
diff -rup binutils.orig/ld/emultempl/ppc64elf.em binutils-2.30/ld/emultempl/ppc64elf.em
869a11
--- binutils.orig/ld/emultempl/ppc64elf.em	2018-02-08 10:49:07.192191063 +0000
869a11
+++ binutils-2.30/ld/emultempl/ppc64elf.em	2018-02-08 10:50:11.062395410 +0000
869a11
@@ -38,7 +38,7 @@ static struct ppc64_elf_params params =
869a11
 					  &ppc_layout_sections_again,
869a11
 					  1, -1, 0,
869a11
 					  ${DEFAULT_PLT_STATIC_CHAIN-0}, -1, 5,
869a11
-					  -1, 1, 0, -1, -1, 0};
869a11
+					  -1, 0, -1, -1, 0};
869a11
 
869a11
 /* Fake input file for stubs.  */
869a11
 static lang_input_statement_type *stub_file;
869a11
@@ -692,8 +692,6 @@ enum ppc64_opt
869a11
   OPTION_NO_PLT_STATIC_CHAIN,
869a11
   OPTION_PLT_THREAD_SAFE,
869a11
   OPTION_NO_PLT_THREAD_SAFE,
869a11
-  OPTION_SPECULATE_INDIRECT_JUMPS,
869a11
-  OPTION_NO_SPECULATE_INDIRECT_JUMPS,
869a11
   OPTION_PLT_ALIGN,
869a11
   OPTION_NO_PLT_ALIGN,
869a11
   OPTION_PLT_LOCALENTRY,
869a11
@@ -721,8 +719,6 @@ PARSE_AND_LIST_LONGOPTS=${PARSE_AND_LIST
869a11
   { "no-plt-static-chain", no_argument, NULL, OPTION_NO_PLT_STATIC_CHAIN },
869a11
   { "plt-thread-safe", no_argument, NULL, OPTION_PLT_THREAD_SAFE },
869a11
   { "no-plt-thread-safe", no_argument, NULL, OPTION_NO_PLT_THREAD_SAFE },
869a11
-  { "speculate-indirect-jumps", no_argument, NULL, OPTION_SPECULATE_INDIRECT_JUMPS },
869a11
-  { "no-speculate-indirect-jumps", no_argument, NULL, OPTION_NO_SPECULATE_INDIRECT_JUMPS },
869a11
   { "plt-align", optional_argument, NULL, OPTION_PLT_ALIGN },
869a11
   { "no-plt-align", no_argument, NULL, OPTION_NO_PLT_ALIGN },
869a11
   { "plt-localentry", optional_argument, NULL, OPTION_PLT_LOCALENTRY },
869a11
@@ -764,13 +760,7 @@ PARSE_AND_LIST_OPTIONS=${PARSE_AND_LIST_
869a11
   --plt-thread-safe           PLT call stubs with load-load barrier.\n"
869a11
 		   ));
869a11
   fprintf (file, _("\
869a11
-  --no-plt-thread-safe        PLT call stubs without load-load barrier.\n"
869a11
-		   ));
869a11
-  fprintf (file, _("\
869a11
-  --speculate-indirect-jumps  PLT call stubs without speculation barrier.\n"
869a11
-		   ));
869a11
-  fprintf (file, _("\
869a11
-  --no-speculate-indirect-jumps PLT call stubs with speculation barrier.\n"
869a11
+  --no-plt-thread-safe        PLT call stubs without barrier.\n"
869a11
 		   ));
869a11
   fprintf (file, _("\
869a11
   --plt-align [=<align>]      Align PLT call stubs to fit cache lines.\n"
869a11
@@ -860,14 +850,6 @@ PARSE_AND_LIST_ARGS_CASES=${PARSE_AND_LI
869a11
       params.plt_thread_safe = 0;
869a11
       break;
869a11
 
869a11
-    case OPTION_SPECULATE_INDIRECT_JUMPS:
869a11
-      params.speculate_indirect_jumps = 1;
869a11
-      break;
869a11
-
869a11
-    case OPTION_NO_SPECULATE_INDIRECT_JUMPS:
869a11
-      params.speculate_indirect_jumps = 0;
869a11
-      break;
869a11
-
869a11
     case OPTION_PLT_ALIGN:
869a11
       if (optarg != NULL)
869a11
 	{
869a11
diff -rup binutils.orig/ld/ld.texinfo binutils-2.30/ld/ld.texinfo
869a11
--- binutils.orig/ld/ld.texinfo	2018-02-08 10:49:07.203190926 +0000
869a11
+++ binutils-2.30/ld/ld.texinfo	2018-02-08 10:50:11.063395397 +0000
869a11
@@ -7646,15 +7646,6 @@ looks for calls to commonly used functio
869a11
 seen, adds the necessary barriers.  Use these options to change the
869a11
 default behaviour.
869a11
 
869a11
-@cindex PowerPC64 PLT call stub speculative execution barrier
869a11
-@kindex --speculate-indirect-jumps
869a11
-@kindex --no-speculate-indirect-jumps
869a11
-@item --speculate-indirect-jumps
869a11
-@itemx --no-speculate-indirect-jumps
869a11
-Use these options to control whether all indirect branch instructions
869a11
-emitted by @code{ld}, such as those in the PLT, have a speculative
869a11
-execution barrier to mitigate Spectre variant 2 attacks.
869a11
-
869a11
 @cindex PowerPC64 ELFv2 PLT localentry optimization
869a11
 @kindex --plt-localentry
869a11
 @kindex --no-plt-localentry
869a11
diff -rup binutils.orig/ld/testsuite/ld-powerpc/elfv2exe.d binutils-2.30/ld/testsuite/ld-powerpc/elfv2exe.d
869a11
--- binutils.orig/ld/testsuite/ld-powerpc/elfv2exe.d	2018-02-08 10:49:07.261190203 +0000
869a11
+++ binutils-2.30/ld/testsuite/ld-powerpc/elfv2exe.d	2018-02-08 10:50:11.063395397 +0000
869a11
@@ -1,6 +1,6 @@
869a11
 #source: elfv2.s
869a11
 #as: -a64
869a11
-#ld: -melf64ppc --speculate-indirect-jumps --defsym f2=0x1234 --defsym f3=0x10008888 --defsym f4=0x1200000 --defsym _start=f1
869a11
+#ld: -melf64ppc --defsym f2=0x1234 --defsym f3=0x10008888 --defsym f4=0x1200000 --defsym _start=f1
869a11
 #objdump: -dr
869a11
 
869a11
 .*
869a11
diff -rup binutils.orig/ld/testsuite/ld-powerpc/elfv2so.d binutils-2.30/ld/testsuite/ld-powerpc/elfv2so.d
869a11
--- binutils.orig/ld/testsuite/ld-powerpc/elfv2so.d	2018-02-08 10:49:07.264190166 +0000
869a11
+++ binutils-2.30/ld/testsuite/ld-powerpc/elfv2so.d	2018-02-08 10:50:11.063395397 +0000
869a11
@@ -1,6 +1,6 @@
869a11
 #source: elfv2.s
869a11
 #as: -a64
869a11
-#ld: -melf64ppc -shared --speculate-indirect-jumps
869a11
+#ld: -melf64ppc -shared
869a11
 #objdump: -dr
869a11
 
869a11
 .*
869a11
diff -rup binutils.orig/ld/testsuite/ld-powerpc/powerpc.exp binutils-2.30/ld/testsuite/ld-powerpc/powerpc.exp
869a11
--- binutils.orig/ld/testsuite/ld-powerpc/powerpc.exp	2018-02-08 10:49:07.261190203 +0000
869a11
+++ binutils-2.30/ld/testsuite/ld-powerpc/powerpc.exp	2018-02-08 10:50:11.063395397 +0000
869a11
@@ -121,11 +121,11 @@ set ppcelftests {
869a11
      "tls32"}
869a11
     {"TLS32 helper shared library" "-shared -melf32ppc tmpdir/tlslib32.o" "" "" {}
869a11
      {} "libtlslib32.so"}
869a11
-    {"TLS32 dynamic exec" "-melf32ppc --no-plt-align --speculate-indirect-jumps --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tls32.o tmpdir/libtlslib32.so" "" "" {}
869a11
+    {"TLS32 dynamic exec" "-melf32ppc --no-plt-align --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tls32.o tmpdir/libtlslib32.so" "" "" {}
869a11
      {{readelf -WSsrl tlsexe32.r} {objdump -dr tlsexe32.d}
869a11
       {objdump -sj.got tlsexe32.g} {objdump -sj.tdata tlsexe32.t}}
869a11
      "tlsexe32"}
869a11
-    {"TLS32 shared" "-shared -melf32ppc --no-plt-align --speculate-indirect-jumps --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tls32.o" "" "" {}
869a11
+    {"TLS32 shared" "-shared -melf32ppc --no-plt-align --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tls32.o" "" "" {}
869a11
      {{readelf -WSsrl tlsso32.r} {objdump -dr tlsso32.d}
869a11
       {objdump -sj.got tlsso32.g} {objdump -sj.tdata tlsso32.t}}
869a11
      "tls32.so"}
869a11
@@ -147,7 +147,7 @@ set ppcelftests {
869a11
     {"TLS32 DLL" "-shared -melf32ppc --version-script tlsdll.ver" ""
869a11
      "-a32" {tlsdll_32.s}
869a11
      {} "tlsdll32.so"}
869a11
-    {"TLS32 opt 5" "-melf32ppc -shared --gc-sections --secure-plt --no-plt-align --speculate-indirect-jumps tmpdir/tlsdll32.so" "" "-a32"  {tlsopt5_32.s}
869a11
+    {"TLS32 opt 5" "-melf32ppc -shared --gc-sections --secure-plt --no-plt-align tmpdir/tlsdll32.so" "" "-a32"  {tlsopt5_32.s}
869a11
      {{objdump -dr tlsopt5_32.d}}
869a11
      "tlsopt5_32"}
869a11
     {"Shared library with global symbol" "-shared -melf32ppc" "" "-a32" {sdalib.s}
869a11
@@ -174,15 +174,15 @@ set ppc64elftests {
869a11
      {} "libtlslib.so"}
869a11
     {"TLS helper old shared lib" "-shared -melf64ppc" "" "-a64" {oldtlslib.s}
869a11
      {} "liboldlib.so"}
869a11
-    {"TLS dynamic exec" "-melf64ppc --no-plt-align --speculate-indirect-jumps --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tls.o tmpdir/libtlslib.so" "" "" {}
869a11
+    {"TLS dynamic exec" "-melf64ppc --no-plt-align --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tls.o tmpdir/libtlslib.so" "" "" {}
869a11
      {{readelf -WSsrl tlsexe.r} {objdump -dr tlsexe.d}
869a11
       {objdump -sj.got tlsexe.g} {objdump -sj.tdata tlsexe.t}}
869a11
      "tlsexe"}
869a11
-    {"TLS dynamic old" "-melf64ppc --no-plt-align --speculate-indirect-jumps --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tls.o tmpdir/liboldlib.so" "" "" {}
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+    {"TLS dynamic old" "-melf64ppc --no-plt-align --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tls.o tmpdir/liboldlib.so" "" "" {}
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      {{readelf -WSsrl tlsexe.r} {objdump -dr tlsexe.d}
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       {objdump -sj.got tlsexe.g} {objdump -sj.tdata tlsexe.t}}
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      "tlsexeold"}
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-    {"TLS shared" "-shared -melf64ppc --no-plt-align --speculate-indirect-jumps --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tls.o" "" "" {}
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+    {"TLS shared" "-shared -melf64ppc --no-plt-align --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tls.o" "" "" {}
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      {{readelf -WSsrl tlsso.r} {objdump -dr tlsso.d}
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       {objdump -sj.got tlsso.g} {objdump -sj.tdata tlsso.t}}
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      "tls.so"}
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@@ -190,17 +190,17 @@ set ppc64elftests {
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      {{objdump -dr tlstoc.d} {objdump -sj.got tlstoc.g}
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       {objdump -sj.tdata tlstoc.t}}
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      "tlstoc"}
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-    {"TLSTOC dynamic exec" "-melf64ppc --no-plt-align --speculate-indirect-jumps --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tlstoc.o tmpdir/libtlslib.so" ""
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+    {"TLSTOC dynamic exec" "-melf64ppc --no-plt-align --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tlstoc.o tmpdir/libtlslib.so" ""
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      "" {}
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      {{readelf -WSsrl tlsexetoc.r} {objdump -dr tlsexetoc.d}
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       {objdump -sj.got tlsexetoc.g} {objdump -sj.tdata tlsexetoc.t}}
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      "tlsexetoc"}
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-    {"TLSTOC dynamic old" "-melf64ppc --no-plt-align --speculate-indirect-jumps --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tlstoc.o tmpdir/liboldlib.so" ""
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+    {"TLSTOC dynamic old" "-melf64ppc --no-plt-align --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tlstoc.o tmpdir/liboldlib.so" ""
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      "" {}
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      {{readelf -WSsrl tlsexetoc.r} {objdump -dr tlsexetoc.d}
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       {objdump -sj.got tlsexetoc.g} {objdump -sj.tdata tlsexetoc.t}}
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      "tlsexetocold"}
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-    {"TLSTOC shared" "-shared -melf64ppc --no-plt-align --speculate-indirect-jumps --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tlstoc.o" "" "" {}
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+    {"TLSTOC shared" "-shared -melf64ppc --no-plt-align --no-ld-generated-unwind-info --hash-style=sysv tmpdir/tlstoc.o" "" "" {}
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      {{readelf -WSsrl tlstocso.r} {objdump -dr tlstocso.d}
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       {objdump -sj.got tlstocso.g} {objdump -sj.tdata tlstocso.t}}
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      "tlstoc.so"}
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@@ -221,7 +221,7 @@ set ppc64elftests {
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      "tlsopt4"}
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     {"TLS DLL" "-shared -melf64ppc --version-script tlsdll.ver" "" "-a64" {tlsdll.s}
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      {} "tlsdll.so"}
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-    {"TLS opt 5" "-melf64ppc --no-plt-align --speculate-indirect-jumps -shared --gc-sections --no-plt-localentry tmpdir/tlsdll.so" "" "-a64"  {tlsopt5.s}
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+    {"TLS opt 5" "-melf64ppc --no-plt-align -shared --gc-sections --no-plt-localentry tmpdir/tlsdll.so" "" "-a64"  {tlsopt5.s}
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      {{objdump -dr tlsopt5.d} {readelf -wf tlsopt5.wf}}
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      "tlsopt5"}
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     {"sym@tocbase" "-shared -melf64ppc" "" "-a64" {symtocbase-1.s symtocbase-2.s}
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diff -rup binutils.orig/ld/testsuite/ld-powerpc/relbrlt.d binutils-2.30/ld/testsuite/ld-powerpc/relbrlt.d
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--- binutils.orig/ld/testsuite/ld-powerpc/relbrlt.d	2018-02-08 10:49:07.262190191 +0000
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+++ binutils-2.30/ld/testsuite/ld-powerpc/relbrlt.d	2018-02-08 10:50:11.063395397 +0000
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@@ -1,6 +1,6 @@
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 #source: relbrlt.s
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 #as: -a64
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-#ld: -melf64ppc --no-plt-align --speculate-indirect-jumps --no-ld-generated-unwind-info --emit-relocs
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+#ld: -melf64ppc --no-plt-align --no-ld-generated-unwind-info --emit-relocs
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 #objdump: -Dr
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 .*