Handle R_ARM_THM_PC11

1 files changed, 41 insertions, 0 deletions

diff --git a/bfd/elf32-arm.h b/bfd/elf32-arm.h
index afe3c8f..3a5939d 100644
--- a/bfd/elf32-arm.h
+++ b/bfd/elf32-arm.h
@@ -1499,6 +1499,47 @@ elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
       }
       break;
 
+    case R_ARM_THM_PC11:
+      /* Thumb B (branch) instruction).  */
+      {
+	bfd_vma        relocation;
+	bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
+	bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
+	bfd_vma        check;
+	bfd_signed_vma signed_check;
+
+#ifdef USE_REL
+	/* Need to refetch addend.  */
+	addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
+	/* ??? Need to determine shift amount from operand size.  */
+	addend >>= howto->rightshift;
+#endif
+	relocation = value + addend;
+
+	relocation -= (input_section->output_section->vma
+		       + input_section->output_offset
+		       + rel->r_offset);
+
+	check = relocation >> howto->rightshift;
+
+	/* If this is a signed value, the rightshift just
+	   dropped leading 1 bits (assuming twos complement).  */
+	if ((bfd_signed_vma) relocation >= 0)
+	  signed_check = check;
+	else
+	  signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
+
+	relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
+ 
+	bfd_put_16 (input_bfd, relocation, hit_data);
+
+	/* Assumes two's complement.  */
+	if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
+	  return bfd_reloc_overflow;
+
+	return bfd_reloc_ok;
+      }
+      
     case R_ARM_GNU_VTINHERIT:
     case R_ARM_GNU_VTENTRY:
       return bfd_reloc_ok;