From: Mark Shinwell <shinwell@codesourcery.com>
Date: Wed, 18 Oct 2006 15:34:50 +0000 (+0000)
Subject: 	* elf32-arm.c (elf32_arm_final_link_relocate): Add support for
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=92f5d02b57f259eb32c3b3499898af0d6814fead;p=binutils-gdb.git

	* elf32-arm.c (elf32_arm_final_link_relocate): Add support for
	R_ARM_MOVW_BREL_NC, R_ARM_MOVW_BREL, R_ARM_MOVT_BREL,
	R_ARM_THM_MOVW_BREL_NC, R_ARM_THM_MOVW_BREL and
	R_ARM_THM_MOVT_BREL relocations.
---

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index db2662f7b29..961e65e04c9 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,10 @@
+2006-10-17  Mark Shinwell  <shinwell@codesourcery.com>
+
+	* elf32-arm.c (elf32_arm_final_link_relocate): Add support for
+	R_ARM_MOVW_BREL_NC, R_ARM_MOVW_BREL, R_ARM_MOVT_BREL,
+	R_ARM_THM_MOVW_BREL_NC, R_ARM_THM_MOVW_BREL and
+	R_ARM_THM_MOVT_BREL relocations.
+
 2006-10-17  Mark Shinwell  <shinwell@codesourcery.com>
 
         * elf32-arm.c (elf32_arm_howto_table_1): Change offset for
diff --git a/bfd/elf32-arm.c b/bfd/elf32-arm.c
index c2e51c1976d..f9f668fa633 100644
--- a/bfd/elf32-arm.c
+++ b/bfd/elf32-arm.c
@@ -4832,6 +4832,13 @@ elf32_arm_final_link_relocate (reloc_howto_type *           howto,
     case R_ARM_MOVT_ABS:
     case R_ARM_MOVW_PREL_NC:
     case R_ARM_MOVT_PREL:
+    /* Until we properly support segment-base-relative addressing then
+       we assume the segment base to be zero, as for the group relocations.
+       Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
+       and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS.  */
+    case R_ARM_MOVW_BREL_NC:
+    case R_ARM_MOVW_BREL:
+    case R_ARM_MOVT_BREL:
       {
 	bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
 
@@ -4840,15 +4847,21 @@ elf32_arm_final_link_relocate (reloc_howto_type *           howto,
 	    addend = ((insn >> 4) & 0xf000) | (insn & 0xfff);
 	    signed_addend = (addend ^ 0x10000) - 0x10000;
 	  }
+
 	value += signed_addend;
-	if (sym_flags == STT_ARM_TFUNC)
-	  value |= 1;
 
 	if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL)
 	  value -= (input_section->output_section->vma
 		    + input_section->output_offset + rel->r_offset);
 
-	if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL)
+	if (r_type == R_ARM_MOVW_BREL && value >= 0x10000)
+          return bfd_reloc_overflow;
+
+	if (sym_flags == STT_ARM_TFUNC)
+	  value |= 1;
+
+	if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL
+            || r_type == R_ARM_MOVT_BREL)
 	  value >>= 16;
 
 	insn &= 0xfff0f000;
@@ -4862,6 +4875,14 @@ elf32_arm_final_link_relocate (reloc_howto_type *           howto,
     case R_ARM_THM_MOVT_ABS:
     case R_ARM_THM_MOVW_PREL_NC:
     case R_ARM_THM_MOVT_PREL:
+    /* Until we properly support segment-base-relative addressing then
+       we assume the segment base to be zero, as for the above relocations.
+       Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
+       R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
+       as R_ARM_THM_MOVT_ABS.  */
+    case R_ARM_THM_MOVW_BREL_NC:
+    case R_ARM_THM_MOVW_BREL:
+    case R_ARM_THM_MOVT_BREL:
       {
 	bfd_vma insn;
 	
@@ -4876,15 +4897,21 @@ elf32_arm_final_link_relocate (reloc_howto_type *           howto,
 		   | (insn         & 0x00ff);
 	    signed_addend = (addend ^ 0x10000) - 0x10000;
 	  }
+
 	value += signed_addend;
-	if (sym_flags == STT_ARM_TFUNC)
-	  value |= 1;
 
 	if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL)
 	  value -= (input_section->output_section->vma
 		    + input_section->output_offset + rel->r_offset);
 
-	if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL)
+	if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000)
+          return bfd_reloc_overflow;
+
+	if (sym_flags == STT_ARM_TFUNC)
+	  value |= 1;
+
+	if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL
+            || r_type == R_ARM_THM_MOVT_BREL)
 	  value >>= 16;
 
 	insn &= 0xfbf08f00;