diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index ad9d33bb992..8d77c68b912 100644
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,9 @@
+2017-10-27  Simon Marchi  <simon.marchi@ericsson.com>
+
+	* dwarf.c (struct Frame_Chunk) <cfa_reg>: Change type to
+	unsigned int.
+	(display_debug_frames): Read CFA reg as an unsigned number.
+
 2017-10-25  Alan Modra  <amodra@gmail.com>
 
 	* nm.c (filter_symbols): Match "__gnu_lto_slim" optionally prefixed
diff --git a/binutils/dwarf.c b/binutils/dwarf.c
index 06702ef42dd..873f104174d 100644
--- a/binutils/dwarf.c
+++ b/binutils/dwarf.c
@@ -6646,7 +6646,7 @@ typedef struct Frame_Chunk
   int data_factor;
   dwarf_vma pc_begin;
   dwarf_vma pc_range;
-  int cfa_reg;
+  unsigned int cfa_reg;
   dwarf_vma cfa_offset;
   unsigned int ra;
   unsigned char fde_encoding;
@@ -7863,7 +7863,7 @@ display_debug_frames (struct dwarf_section *section,
 	      break;
 
 	    case DW_CFA_def_cfa:
-	      READ_SLEB (fc->cfa_reg);
+	      READ_ULEB (fc->cfa_reg);
 	      READ_ULEB (fc->cfa_offset);
 	      fc->cfa_exp = 0;
 	      if (! do_debug_frames_interp)
@@ -7872,7 +7872,7 @@ display_debug_frames (struct dwarf_section *section,
 	      break;
 
 	    case DW_CFA_def_cfa_register:
-	      READ_SLEB (fc->cfa_reg);
+	      READ_ULEB (fc->cfa_reg);
 	      fc->cfa_exp = 0;
 	      if (! do_debug_frames_interp)
 		printf ("  DW_CFA_def_cfa_register: %s\n",
@@ -7991,7 +7991,7 @@ display_debug_frames (struct dwarf_section *section,
 	      break;
 
 	    case DW_CFA_def_cfa_sf:
-	      READ_SLEB (fc->cfa_reg);
+	      READ_ULEB (fc->cfa_reg);
 	      READ_ULEB (fc->cfa_offset);
 	      fc->cfa_offset = fc->cfa_offset * fc->data_factor;
 	      fc->cfa_exp = 0;