X-Git-Url: https://review.fuel-infra.org/gitweb?a=blobdiff_plain;f=cirros-testvm%2Fsrc-cirros%2Fbuildroot-2015.05%2Fpackage%2Fbinutils%2F2.22%2F904-Fix-call8-call-target-out-of-range-xtensa-ld-relaxation.patch;fp=cirros-testvm%2Fsrc-cirros%2Fbuildroot-2015.05%2Fpackage%2Fbinutils%2F2.22%2F904-Fix-call8-call-target-out-of-range-xtensa-ld-relaxation.patch;h=dba7620b7e1ce4578831905589253d85d6590526;hb=b0a0f15dfaa205161a7fcb20cf1b8cd4948c2ef3;hp=0000000000000000000000000000000000000000;hpb=c6ac3cd55ee2da956195eee393b0882105dfad4e;p=packages%2Ftrusty%2Fcirros-testvm.git

diff --git a/cirros-testvm/src-cirros/buildroot-2015.05/package/binutils/2.22/904-Fix-call8-call-target-out-of-range-xtensa-ld-relaxation.patch b/cirros-testvm/src-cirros/buildroot-2015.05/package/binutils/2.22/904-Fix-call8-call-target-out-of-range-xtensa-ld-relaxation.patch
new file mode 100644
index 0000000..dba7620
--- /dev/null
+++ b/cirros-testvm/src-cirros/buildroot-2015.05/package/binutils/2.22/904-Fix-call8-call-target-out-of-range-xtensa-ld-relaxation.patch
@@ -0,0 +1,79 @@
+From 7fc39194f8fb48914c995f8ec3826d50086f1ec0 Mon Sep 17 00:00:00 2001
+From: Sterling Augustine <augustine.sterling@gmail.com>
+Date: Tue, 25 Jan 2011 13:59:13 -0800
+Subject: [PATCH] Fix 'call8: call target out of range' xtensa ld relaxation
+ bug
+
+During link-time relaxation distance between cross-section call site and
+its target may grow, producing 'call target out of range' error for
+relaxed calls. Be more conservative when calculating whether or not a
+callx can be converted to a straight call.
+
+2014-09-23  Sterling Augustine  <augustine.sterling@gmail.com>
+
+bfd/
+    * elf32-xtensa.c (is_resolvable_asm_expansion): for cross-section
+    call relaxation use furthermost addresses where call source and
+    destination can be to check whether it's in the range of a direct
+    call.
+
+Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
+---
+ bfd/elf32-xtensa.c | 41 +++++++++++++++++++++++++++++++++++++----
+ 1 file changed, 37 insertions(+), 4 deletions(-)
+
+diff --git a/bfd/elf32-xtensa.c b/bfd/elf32-xtensa.c
+index 09862e3..e32496a 100644
+--- a/bfd/elf32-xtensa.c
++++ b/bfd/elf32-xtensa.c
+@@ -7124,10 +7124,43 @@ is_resolvable_asm_expansion (bfd *abfd,
+ 	  || is_reloc_sym_weak (abfd, irel)))
+     return FALSE;
+ 
+-  self_address = (sec->output_section->vma
+-		  + sec->output_offset + irel->r_offset + 3);
+-  dest_address = (target_sec->output_section->vma
+-		  + target_sec->output_offset + target_offset);
++  if (target_sec->output_section != sec->output_section)
++    {
++      /* If the two sections are sufficiently far away that relaxation
++	 might take the call out of range, we can't simplify.  For
++	 example, a positive displacement call into another memory
++	 could get moved to a lower address due to literal removal,
++	 but the destination won't move, and so the displacment might
++	 get larger.
++
++	 If the displacement is negative, assume the destination could
++	 move as far back as the start of the output section.  The
++	 self_address will be at least as far into the output section
++	 as it is prior to relaxation.
++
++	 If the displacement is postive, assume the destination will be in
++	 it's pre-relaxed location (because relaxation only makes sections
++	 smaller).  The self_address could go all the way to the beginning
++	 of the output section.  */
++
++      dest_address = target_sec->output_section->vma;
++      self_address = sec->output_section->vma;
++
++      if (sec->output_section->vma > target_sec->output_section->vma)
++	self_address += sec->output_offset + irel->r_offset + 3;
++      else
++	dest_address += bfd_get_section_limit (abfd, target_sec->output_section);
++      /* Call targets should be four-byte aligned.  */
++      dest_address = (dest_address + 3) & ~3;
++    }
++  else
++    {
++
++      self_address = (sec->output_section->vma
++		      + sec->output_offset + irel->r_offset + 3);
++      dest_address = (target_sec->output_section->vma
++		      + target_sec->output_offset + target_offset);
++    }
+       
+   *is_reachable_p = pcrel_reloc_fits (direct_call_opcode, 0,
+ 				      self_address, dest_address);
+-- 
+1.8.1.4
+